Pump cabinet, refrigeration system and refrigeration method

Abstract

The embodiments of the present application provide a pump cabinet, a refrigeration system and a refrigeration method. The pump cabinet includes a heat exchanger, a first branch and a second branch. A first refrigerant medium flows inside the first branch, the first branch is connected to the heat exchanger, and the input end and the output end of the first branch can be connected to a cold source, so that the heat exchanger and the cold source form a first circulation heat exchange through the first refrigerant medium; a second refrigerant medium flows inside the second branch, the second branch is connected to the heat exchanger, and the input end and the output end of the second branch can be connected to a heat exchange end, so that the heat exchanger and the heat exchange end form a second circulation heat exchange through the second refrigerant medium; wherein the first refrigerant medium and the second refrigerant medium are different, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger, so that the cold source realizes cooling of the heat exchange end.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of refrigeration technology, and in particular to a pump cabinet, a refrigeration system and a refrigeration method. Background Art

[0002] For some equipment that can generate a lot of heat when working, such as data centers, it is usually necessary to equip the equipment with a refrigeration system to cool the equipment in time to prevent the equipment from being overheated and affecting normal operation. However, the refrigeration system in the related art has problems such as high energy consumption and poor refrigeration effect. Summary of the invention

[0003] The embodiment of the present application provides a pump cabinet that can be adapted to the cold source and heat exchange terminal of the prior art to solve the problems of high energy consumption and poor refrigeration effect existing in the related art.

[0004] An embodiment of the present application also provides a refrigeration system including the above-mentioned pump cabinet.

[0005] The embodiment of the present application also provides a refrigeration method.

[0006] The pump cabinet of an embodiment of the present application includes a heat exchanger, a first branch and a second branch, a first refrigerant medium flows inside the first branch, the first branch is connected to the heat exchanger, and the input end and the output end of the first branch can be connected to a cold source, so that the heat exchanger and the cold source form a first circulation heat exchange through the first refrigerant medium; a second refrigerant medium flows inside the second branch, the second branch is connected to the heat exchanger, and the input end and the output end of the second branch can be connected to a heat exchange end, so that the heat exchanger and the heat exchange end form a second circulation heat exchange through the second refrigerant medium; wherein the first refrigerant medium and the second refrigerant medium are different, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger, so that the cold source realizes cooling of the heat exchange end.

[0007] In some embodiments, the second refrigerant medium can undergo a phase change during the second cycle heat exchange.

[0008] In some embodiments, the first refrigerant medium includes water.

[0009] In some of the embodiments, the first branch includes a first pipeline, a first regulating pump and a first temperature sensor;

[0010] The first refrigerant is disposed in the first pipeline, and the first temperature sensor is disposed in the first pipeline to obtain a temperature change signal of the first refrigerant;

[0011] The first regulating pump is arranged in the first pipeline, and can regulate the flow rate of the first refrigerant medium entering the heat exchanger according to the temperature change signal.

[0012] In some of the embodiments, the second branch includes a second pipeline, a second regulating pump and a monitor;

[0013] The second refrigerant medium is arranged in the second pipeline, and the monitor is arranged in the second pipeline and adjacent to the input end of the second branch to obtain an index change signal of the second refrigerant medium;

[0014] The second regulating pump is arranged in the second pipeline, and can regulate the flow rate of the second refrigerant medium according to the index change signal.

[0015] In some of the embodiments, the monitor includes a pressure sensor and / or a second temperature sensor.

[0016] In some of the embodiments, the first branch includes a first temperature sensor for obtaining the temperature of the first refrigerant medium;

[0017] The second branch includes a compressor and an electric valve arranged in parallel, the input end of the compressor is connected to the output end of the heat exchange end, and the input end of the electric valve is connected to the output end of the heat exchange end.

[0018] The refrigeration system of the embodiment of the present application includes:

[0019] A pump cabinet as described in any one of the above;

[0020] a cold source connected to the first branch of the pump cabinet; and

[0021] The heat exchange end is connected to the second branch of the pump cabinet.

[0022] In some of the embodiments, the heat sink comprises a cooling tower.

[0023] In some of the embodiments, the refrigeration system further includes a heat recovery device, which is connected to the cold source to recover heat of the first refrigerant medium.

[0024] In some of the embodiments, the pump cabinet and the cold source are arranged adjacent to each other.

[0025] The refrigeration method of the embodiment of the present application includes:

[0026] Using the first refrigerant medium, a first cycle heat exchange is formed between the heat exchanger and the cold source;

[0027] Using the second refrigerant medium, a second heat exchange cycle is formed between the heat exchanger and the heat exchange end;

[0028] Using the first refrigerant medium and the second refrigerant medium to realize heat exchange in the heat exchanger, so that the cold source realizes cooling of the heat exchange end;

[0029] The first refrigerant medium and the second refrigerant medium are different.

[0030] In some embodiments, a second refrigeration medium is used to form a second cycle heat exchange between the heat exchanger and the heat exchange end, including:

[0031] The second refrigerant medium can undergo a phase change when performing the second cycle heat exchange.

[0032] In some embodiments, the refrigeration method further comprises:

[0033] The flow rate of the first refrigerant medium entering the heat exchanger is adjusted according to the temperature change signal of the first refrigerant medium.

[0034] In some embodiments, adjusting the flow rate of the first refrigerant medium entering the heat exchanger according to the temperature change of the first refrigerant medium includes:

[0035] When the temperature of the first refrigerant medium is greater than a preset temperature value, increasing the flow rate of the first refrigerant medium entering the heat exchanger;

[0036] When the temperature of the first refrigerant medium is less than or equal to the preset temperature value, the flow rate of the first refrigerant medium entering the heat exchanger is reduced.

[0037] In some embodiments, the refrigeration method further comprises:

[0038] The flow rate of the second refrigerant medium entering the heat exchange end is adjusted according to the temperature change signal and / or the pressure change signal of the second refrigerant medium.

[0039] In some embodiments, adjusting the flow rate of the second refrigerant medium entering the heat exchange end according to the temperature change signal and / or the pressure change signal of the second refrigerant medium includes:

[0040] When the temperature of the second refrigerant medium is greater than a preset temperature value and / or the pressure is greater than a preset pressure value, increasing the flow rate of the second refrigerant medium entering the heat exchange end;

[0041] When the temperature of the second refrigerant medium is less than or equal to the preset temperature value and / or the pressure of the second refrigerant medium is less than or equal to the preset pressure value, the flow rate of the second refrigerant medium entering the heat exchange end is reduced.

[0042] In some embodiments, the refrigeration method further comprises:

[0043] When the temperature of the first refrigerant medium is greater than a preset temperature value, the second refrigerant medium enters the heat exchanger through the first bypass;

[0044] When the temperature of the first refrigerant medium is less than or equal to the preset temperature value, the second refrigerant medium enters the heat exchanger through the second bypass;

[0045] The first bypass and the second bypass are arranged in parallel, and the first bypass includes a compressor, and the second bypass includes an electric valve.

[0046] One embodiment of the above application has the following advantages or beneficial effects:

[0047] The pump cabinet of the embodiment of the present application uses the first refrigerant medium to form a first cycle heat exchange between the cold source and the heat exchanger, the second refrigerant medium to form a second cycle heat exchange between the heat exchange terminal and the heat exchanger, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger. The technical means enable the pump cabinet of the embodiment of the present application to act as a heat exchange medium, and can combine the cold source and the heat exchange terminal to achieve refrigeration. In addition, the pump cabinet of the embodiment of the present application can select the appropriate first refrigerant medium and second refrigerant medium according to different refrigeration requirements and the specific types of cold sources and heat exchange terminals that need to be adapted. In this way, the pump cabinet of the embodiment of the present application can take into account the requirements of energy consumption and refrigeration effect, thereby obtaining a refrigeration system with low energy consumption and good refrigeration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the attached drawings.

[0049] Figure 1 Shown is a schematic diagram of a refrigeration system according to an embodiment of the present application.

[0050] Figure 2 Shown is a schematic diagram of a pump cabinet according to an embodiment of the present application.

[0051] Figure 3 Shown is a schematic diagram of a refrigeration system according to another embodiment of the present application.

[0052] Figure 4 Shown is a flow chart of a refrigeration method according to an embodiment of the present application.

[0053] The reference numerals are described as follows:

[0054] 10. Cold source

[0055] 20. Pump cabinet

[0056] 30. Heat exchange end

[0057] 100. Heat exchanger

[0058] 200, First Branch Road

[0059] 210, First Pipeline

[0060] 211. First input terminal

[0061] 212. First output terminal

[0062] 220. First regulating pump

[0063] 230. First temperature sensor

[0064] 240. First check valve

[0065] 250. Filter

[0066] 300, Second Branch Road

[0067] 301. Input segment

[0068] 3011, First Bypass

[0069] 3012, Second Bypass

[0070] 302. Output section

[0071] 3021, Third Bypass

[0072] 3022, Fourth Bypass

[0073] 310, Second pipeline

[0074] 311, second input terminal

[0075] 312. Second output terminal

[0076] 320, Second regulating pump

[0077] 330. Monitor

[0078] 331. Pressure Sensor

[0079] 332. Second temperature sensor

[0080] 340. Compressor

[0081] 350, Electric valve

[0082] 360, Liquid Reservoir

[0083] 370, Second Check Valve DETAILED DESCRIPTION

[0084] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0085] As described in the background technology, some devices that can generate a lot of heat when working, such as data centers, need to be equipped with a refrigeration system to cool the devices in time to avoid excessive temperature of the devices and ensure normal operation of the devices.

[0086] With the vigorous development of the data center industry, there are more and more large data centers. The total power consumption of a data center is all the power consumed to maintain the normal operation of the data center, including the power consumption of IT equipment, refrigeration equipment, power supply and distribution systems and other facilities.

[0087] At present, an important indicator for measuring the energy efficiency of data centers is the Cooling Load Factor (CLF). CLF is defined as the ratio of the power consumption of refrigeration equipment in a data center to the power consumption of IT equipment. The smaller the CLF value, the more energy-efficient the data center is.

[0088] In related technologies, a chilled water cooling system is generally used to transfer the heat in the room where the data center is located to the outside through the chiller, chilled water pump, and cooling water pump. Water is used as a heat transfer medium, and the heat is transferred to the outside through the secondary circulation of chilled water and cooling water to achieve a cooling effect. However, using a chilled water cooling system for cooling results in a CLF of 0.5, which results in high energy consumption.

[0089] In order to solve the problem of high energy consumption, a phase change cooling technology based on an evaporative condenser is also proposed in the related art, which uses the circulation of liquid refrigerant to produce phase change, thereby achieving a cooling effect. However, the problem with this method is that the capacity of the evaporative condenser is limited. In order to meet the cooling requirements of large data centers, a large number of evaporative condensers need to be configured, which greatly increases the difficulty and cost of assembly.

[0090] Based on this, the embodiments of the present application provide a pump cabinet that can be adapted to the cold source and heat exchange terminal of the prior art, a refrigeration system including the above-mentioned pump cabinet, and a refrigeration method.

[0091] like Figure 1 As shown, Figure 1The schematic diagram of the refrigeration system of the embodiment of the present application is shown. The refrigeration system of the embodiment of the present application includes a cold source 10, a pump cabinet 20 and a heat exchange terminal 30, and the pump cabinet 20 includes a heat exchanger 100, a first branch 200 and a second branch 300. The first branch 200 is respectively connected to the cold source 10 and the heat exchanger 100 of the pump cabinet 20 to form a circulation pipeline between the cold source 10 and the heat exchanger 100. The first branch 200 is provided with a first refrigerant, and the first refrigerant circulates along the first branch 200 between the cold source 10 and the heat exchanger 100, so that a first circulation heat exchange is formed between the cold source 10 and the heat exchanger 100. The second branch 300 is respectively connected to the heat exchange terminal 30 and the heat exchanger 100 to form a circulation pipeline between the heat exchange terminal 30 and the heat exchanger 100. The second branch 300 is provided with a second refrigerant, which circulates between the heat exchange terminal 30 and the heat exchanger 100 along the second branch 300, so that a second circulation heat exchange is formed between the heat exchange terminal 30 and the heat exchanger 100. The first refrigerant and the second refrigerant can exchange heat in the heat exchanger 100, so that the cold source 10 cools the heat exchange terminal 30.

[0092] During the installation of the refrigeration system of the embodiment of the present application, the heat exchange terminal 30 can be arranged in a room containing a data center to cool the data center. For example, the heat exchange terminal 30 can first cool the air in the room, and then cool it down by heat exchange between the cold air and the CPU of the server.

[0093] The cold source 10 can be arranged outdoors to achieve heat exchange with the first refrigerant to cool the first refrigerant. The pump cabinet 20 can be arranged between the cold source 10 and the heat exchange terminal 30 and is located outdoors. Through the two-cycle heat exchange of the pump cabinet 20, the cold source 10 and the heat exchange terminal 30 are combined to achieve the effect of the cold source 10 cooling the heat exchange terminal 30.

[0094] It should be noted that the heat exchange terminal 30 in the embodiment of the present application can be any one of a room-level air conditioner, a row-level air conditioner, a backboard air conditioner, a ceiling-mounted air conditioner, or a combination thereof. Of course, the heat exchange terminal 30 can also be a liquid-cooled server, etc.

[0095] like Figure 2 As shown, Figure 2The schematic diagram of the pump cabinet of the embodiment of the present application is shown. The pump cabinet 20 of the embodiment of the present application includes a heat exchanger 100, a first branch 200 and a second branch 300. A first refrigerant medium flows inside the first branch 200, the first branch 200 is connected to the heat exchanger 100, and the first input end 211 and the first output end 212 of the first branch 200 can be connected to the cold source 10, so that the heat exchanger 100 and the cold source 10 form a first cycle heat exchange through the first refrigerant medium. A second refrigerant medium flows inside the second branch 300, the second branch 300 is connected to the heat exchanger 100, and the second input end 311 and the second output end 312 of the second branch 300 can be connected to a heat exchange terminal 30, so that the heat exchanger 100 and the heat exchange terminal 30 form a second cycle heat exchange through the second refrigerant medium; wherein the first refrigerant medium and the second refrigerant medium are different, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger 100, so that the cold source 10 realizes cooling of the heat exchange terminal 30.

[0096] The pump cabinet 20 of the embodiment of the present application uses the first refrigerant medium to form a first cycle heat exchange between the cold source 10 and the heat exchanger 100, and the second refrigerant medium to form a second cycle heat exchange between the heat exchange terminal 30 and the heat exchanger 100, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger 100. The technical means enable the pump cabinet 20 of the embodiment of the present application to act as a heat exchange medium, and can combine the cold source 10 and the heat exchange terminal 30 to achieve refrigeration. In addition, the pump cabinet 20 of the embodiment of the present application can select the appropriate first refrigerant medium and the second refrigerant medium according to different refrigeration requirements and the specific types of the cold source 10 and the heat exchange terminal 30 that need to be adapted. In this way, the pump cabinet 20 of the embodiment of the present application can take into account the requirements of energy consumption and refrigeration effect, thereby obtaining a refrigeration system with low energy consumption and good refrigeration effect.

[0097] It is understandable that the heat exchanger 100 in the embodiment of the present application may be a plate heat exchanger, but is not limited thereto, and may also be a tube heat exchanger, for example.

[0098] The second refrigerant medium can undergo a phase change in the second cycle heat exchange. Specifically, the second refrigerant medium can circulate between the heat exchanger 100 and the heat exchange terminal 30 along the second branch 300. The second refrigerant medium becomes a gas after absorbing the heat generated by the data center at the heat exchange terminal 30. The gaseous second refrigerant medium condenses into a liquid after heat exchange with the heat exchanger 100. After the liquid second refrigerant medium flows to the heat exchange terminal 30, it absorbs the heat generated by the data center and becomes a gas again. This cycle repeats itself to cool the data center.

[0099] In this embodiment, by adopting a technical solution that enables the second refrigerant medium to achieve phase change during the circulation and heat exchange process, the second refrigerant medium can be transformed between two different forms, thereby improving the refrigeration effect.

[0100] The first refrigerant includes water. In this embodiment, the first refrigerant is limited to water, and the water does not undergo a phase change process during the circulation and heat exchange between the cold source 10 and the heat exchanger 100.

[0101] Furthermore, the cold source 10 may be a cooling tower. Water circulates and exchanges heat between the cooling tower and the heat exchanger 100. When the water is in the heat exchanger 100, it can exchange heat with the second refrigerant. After the water flows to the cooling tower, the cooling tower can cool the water, so that the water continues to circulate to the heat exchanger 100.

[0102] Since the capacity of the cooling tower is relatively large and combined with the technical means of using water as the first refrigerant medium, the refrigeration capacity of the pump cabinet 20 of the embodiment of the present application can be increased to match a large data center.

[0103] Please continue reading Figure 2 The first branch 200 includes a first pipeline 210, a first regulating pump 220 and a first temperature sensor 230. The first refrigerant is arranged in the first pipeline 210. The first pipeline 210 is arranged in the heat exchanger 100, and includes a first input end 211 and a first output end 212. The first input end 211 is connected to the output end of the cold source 10, and the first output end 212 is connected to the input end of the cold source 10. Part of the first pipeline 210 is arranged in the heat exchanger 100.

[0104] The first temperature sensor 230 is provided on the first pipeline 210 to obtain a temperature change signal of the first refrigerant. The first regulating pump 220 is provided on the first pipeline 210 and can adjust the flow of the first refrigerant entering the heat exchanger 100 according to the temperature change signal. The first temperature sensor 230 can be provided adjacent to the first input end 211 or the first output end 212, or the first temperature sensor 230 can be provided adjacent to the first input end 211 and the first output end 212. In this embodiment, the first temperature sensor 230 is provided adjacent to the first input end 211 and the second output end 312.

[0105] Specifically, when the temperature of the first refrigerant medium obtained by the first temperature sensor 230 is greater than a temperature setting value, the temperature difference between the first refrigerant medium and the second refrigerant medium is small due to the high temperature of the first refrigerant medium. In order to ensure the heat exchange capacity, the flow rate of the first refrigerant medium entering the heat exchanger 100 can be increased by the first regulating pump 220. When the temperature of the first refrigerant medium obtained by the first temperature sensor 230 is less than or equal to the temperature setting value, the temperature difference between the first refrigerant medium and the second refrigerant medium is large due to the low temperature of the first refrigerant medium. On the basis of reducing the flow rate of the first refrigerant medium entering the heat exchanger 100, the heat exchange effect can also be ensured. In this way, energy consumption is saved.

[0106] The first branch 200 further includes a first one-way valve 240 and a filter 250. The first one-way valve 240 is disposed on the first pipeline 210 to ensure that the first refrigerant medium flows in a set direction to prevent backflow. The filter 250 is disposed on the first pipeline 210 to filter the first refrigerant medium. The filter 250 may be a Y-type filter, but is not limited thereto.

[0107] Please continue reading Figure 2 The second branch 300 includes a second pipeline 310, a second regulating pump 320 and a monitor 330. The second refrigerant medium is provided in the second pipeline 310. The second pipeline 310 is provided through the heat exchanger 100 and includes a second input end 311 and a second output end 312. The second input end 311 is connected to the output end of the heat exchange terminal 30, and the second output end 312 is connected to the input end of the heat exchange terminal 30.

[0108] The monitor 330 is disposed in the second pipeline 310 and adjacent to the second input end 311 of the second branch 300 to obtain the index change signal of the second refrigerant. The second regulating pump 320 is disposed in the second pipeline 310 and can adjust the flow of the second refrigerant according to the index change signal.

[0109] The indicator change signal may include a temperature change signal and / or a pressure change signal. For example, the monitor 330 may include a pressure sensor 331 and / or a second temperature sensor 332. For example, the monitor 330 includes a pressure sensor 331; or, the monitor 330 includes a second temperature sensor 332; or, the monitor 330 includes a pressure sensor 331 and a second temperature sensor 332.

[0110] In this embodiment, the monitor 330 includes a pressure sensor 331 and a second temperature sensor 332. The pressure sensor 331 and the second temperature sensor 332 are both disposed on the second pipeline 310. The pressure sensor 331 is used to obtain the pressure value of the second refrigerant, and the second temperature sensor 332 is used to obtain the temperature value of the second refrigerant.

[0111] It is worth mentioning that the pressure sensor 331 and the second temperature sensor 332 monitor the pressure value change and the temperature value change of the second refrigerant respectively, so as to judge the temperature of the environment where the heat exchange terminal 30 is located. According to the temperature of the environment where the heat exchange terminal 30 is located, the flow rate of the second refrigerant is adjusted in time to ensure the cooling effect.

[0112] Specifically, when the temperature of the second refrigerant is greater than a preset temperature value; or the pressure is greater than a preset pressure value; or when both the temperature and the pressure are greater than the preset values, it means that the temperature of the second refrigerant is higher after flowing through the heat exchange terminal 30 for heat exchange, and it can be concluded that the temperature of the environment where the heat exchange terminal 30 is located is higher. At this time, the flow rate of the second refrigerant entering the heat exchange terminal 30 is increased by the second regulating pump 320, so that a larger flow rate of the second refrigerant can enter the heat exchange terminal 30 to ensure the cooling capacity.

[0113] Similarly, when the temperature of the second refrigerant is less than or equal to the preset temperature value; or the pressure is less than or equal to the preset pressure value; or when both the temperature and the pressure are less than the preset values, it means that the temperature rise of the second refrigerant is low after flowing through the heat exchange terminal 30 for heat exchange, and it can be concluded that the temperature of the environment where the heat exchange terminal 30 is located is low. At this time, the flow rate of the second refrigerant entering the heat exchange terminal 30 is reduced through the second regulating pump 320, so that the second refrigerant with a smaller flow rate can enter the heat exchange terminal 30, saving energy consumption while ensuring the cooling capacity.

[0114] The second branch 300 includes an input section 301 and an output section 302. The two ends of the input section 301 are respectively connected to the output end of the heat exchange terminal 30 and the input end of the heat exchanger 100. The two ends of the output section 302 are respectively connected to the input end of the heat exchange terminal 30 and the output end of the heat exchanger 100.

[0115] The input section 301 includes a first bypass 3011 and a second bypass 3012, which are arranged in parallel. The second refrigerant can selectively flow through the first bypass 3011 or the second bypass 3012 to enter the heat exchanger 100.

[0116] The second branch 300 includes a compressor 340 and an electric valve 350 which are arranged in parallel. The compressor 340 is arranged on the first bypass 3011, and the electric valve 350 is arranged on the second bypass 3012. The input end of the compressor 340 is connected to the output end of the heat exchange end 30, and the input end of the electric valve 350 is connected to the output end of the heat exchange end 30.

[0117] The first temperature sensor 230 of the first branch 200 is used to obtain the temperature of the first refrigerant. According to the change of the temperature value of the first refrigerant obtained by the first temperature sensor 230, the second refrigerant is controlled to flow through the first bypass 3011 or the second bypass 3012.

[0118] Specifically, when the temperature of the first refrigerant is greater than a preset temperature value, since the temperature of the first refrigerant is relatively high, in order to ensure the heat exchange effect between the first refrigerant and the second refrigerant in the heat exchanger 100, the temperature of the second refrigerant needs to be increased. At this time, the second refrigerant enters the heat exchanger 100 through the first bypass 3011. When the second refrigerant flows through the first bypass 3011, the pressure and temperature of the second refrigerant can be increased by the action of the compressor 340. In this way, the temperature difference between the first refrigerant and the second refrigerant in the heat exchanger 100 is relatively large, ensuring the heat exchange effect.

[0119] When the temperature of the first refrigerant medium is less than or equal to the preset temperature value, there is a certain temperature difference between the first refrigerant medium and the second refrigerant medium in the heat exchanger 100 due to the low temperature of the first refrigerant medium. At this time, the second refrigerant medium can be controlled to enter the heat exchanger 100 through the second bypass 3012. The second refrigerant medium enters the heat exchanger 100 under the action of the electric valve 350 of the second bypass 3012. The second refrigerant medium can also perform better heat exchange with the first refrigerant medium in the heat exchanger 100 without passing through the compressor 340.

[0120] Please continue reading Figure 2 The output section 302 includes a third bypass 3021 and a fourth bypass 3022, which are arranged in parallel. The second refrigerant can selectively flow through the third bypass 3021 or the fourth bypass 3022 to enter the heat exchange terminal 30. One of the third bypass 3021 and the fourth bypass 3022 can be used as a backup pipeline. When one of them fails, the other can be activated at any time.

[0121] The third bypass 3021 and the fourth bypass 3022 may both include a second regulating pump 320 and a second one-way valve 370. The second one-way valve 370 is used to unidirectionally conduct the second refrigerant to prevent the second refrigerant from flowing back. Of course, the designs of the third bypass 3021 and the fourth bypass 3022 may also be different.

[0122] The second regulating pump 320 may be a fluorine pump.

[0123] The second branch 300 further includes a liquid storage tank 360. The liquid storage tank 360 is disposed on the second pipeline 310 and is used to store the second refrigerant medium in liquid state after heat exchange in the heat exchanger 100.

[0124] like Figure 3 As shown, Figure 3The schematic diagram of a refrigeration system of another embodiment of the present application is shown. The refrigeration system of the embodiment of the present application includes one or more pump cabinets 20, one or more cold sources 10 and one or more heat exchange terminals 30. The cold source 10 is connected to the first branch 200 of the pump cabinet 20. The heat exchange terminal 30 is connected to the second branch 300 of the pump cabinet 20.

[0125] It is worth mentioning that the cold source 10 of the refrigeration system of the embodiment of the present application is connected to the pump cabinet 20 through a pipe network, and the number of cold sources 10 and the number of pump cabinets 20 can be one-to-one corresponding or not one-to-one corresponding.

[0126] In this embodiment, the number of the cold sources 10 is two, and the number of the pump cabinets 20 is three. The number of the cold sources 10 can be determined according to the capacity of the plurality of heat exchange terminals 30.

[0127] The refrigeration system of the embodiment of the present application further includes a heat recovery device, which is connected to the cold source 10 to recover the heat of the first refrigerant. The heat carried by the first refrigerant can be collected by the heat recovery device to avoid direct discharge into the atmosphere and waste.

[0128] It is understandable that when the first refrigerant medium is water, the heat recovery device can directly recover hot water for use in heating and other scenarios.

[0129] In this embodiment, the pump cabinet 20 and the cold source 10 of the refrigeration system of the embodiment of the present application are arranged adjacent to each other, for example, the pump cabinet 20 and the cold source 10 are both arranged on the roof of the room where the data center is accommodated. By arranging the pump cabinet 20 and the cold source 10 adjacent to each other, the length of the pipe network between the pump cabinet 20 and the cold source 10 can be shortened, the head of the first regulating pump 220 can be reduced, and the circulation energy consumption of the first refrigerant can be reduced, thereby achieving the purpose of reducing CLF.

[0130] like Figure 4 As shown, Figure 4 The flowchart of the refrigeration method of the embodiment of the present application is shown. The refrigeration method provided by the embodiment of the present application includes:

[0131] Step S102, using the first refrigerant to form a first cycle heat exchange between the heat exchanger 100 and the cold source 10;

[0132] Step S104, using the second refrigerant to form a second cycle heat exchange between the heat exchanger 100 and the heat exchange terminal 30;

[0133] Step S106, utilizing the first refrigerant medium and the second refrigerant medium to realize heat exchange in the heat exchanger 100, so that the cold source 10 realizes cooling for the heat exchange terminal 30; wherein the first refrigerant medium and the second refrigerant medium are different.

[0134] In summary, the advantages and beneficial effects of the pump cabinet, refrigeration system and refrigeration method of the embodiments of the present application include at least:

[0135] The pump cabinet 20 of the embodiment of the present application uses the first refrigerant medium to form a first cycle heat exchange between the cold source 10 and the heat exchanger 100, and the second refrigerant medium to form a second cycle heat exchange between the heat exchange terminal 30 and the heat exchanger 100, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger 100. The technical means enable the pump cabinet 20 of the embodiment of the present application to act as a heat exchange medium, and can combine the cold source 10 and the heat exchange terminal 30 to achieve refrigeration. In addition, the pump cabinet 20 of the embodiment of the present application can select the appropriate first refrigerant medium and the second refrigerant medium according to different refrigeration requirements and the specific types of the cold source 10 and the heat exchange terminal 30 that need to be adapted. In this way, the pump cabinet 20 of the embodiment of the present application can take into account the requirements of energy consumption and refrigeration effect, thereby obtaining a refrigeration system with low energy consumption and good refrigeration effect.

[0136] In the application embodiments, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the application embodiments can be understood according to the specific circumstances.

[0137] In the description of the application embodiments, it should be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the application embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the application embodiments.

[0138] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means 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 application embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0139] The above are only preferred embodiments of the application embodiments and are not intended to limit the application embodiments. For those skilled in the art, the application embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application embodiments shall be included in the protection scope of the application embodiments.

Claims

1. A pump cabinet, characterized in that: include: Heat exchanger; a first branch having a first refrigerant medium flowing therein, the first branch being connected to the heat exchanger, and the input end and the output end of the first branch being connectable to a cold source, so that the heat exchanger and the cold source form a first cycle heat exchange through the first refrigerant medium; the first branch comprising a first temperature sensor for obtaining the temperature of the first refrigerant medium; as well as The second branch has a second refrigerant medium flowing therein, the second branch is connected to the heat exchanger, and the input end and the output end of the second branch can be connected to a heat exchange end, so that the heat exchanger and the heat exchange end form a second circulation heat exchange through the second refrigerant medium; the second branch includes a compressor and an electric valve arranged in parallel, the input end of the compressor is connected to the output end of the heat exchange end, and the input end of the electric valve is connected to the output end of the heat exchange end; the second branch includes a second pipeline, a second regulating pump and a monitor; the second refrigerant medium is arranged in the second pipeline, and the monitor is arranged in the second pipeline and adjacent to the input end of the second branch to obtain an index change signal of the second refrigerant medium; the second regulating pump is arranged in the second pipeline and can adjust the flow rate of the second refrigerant medium according to the index change signal; The first refrigerant medium and the second refrigerant medium are different, and the first refrigerant medium and the second refrigerant medium can realize heat exchange in the heat exchanger, so that the cold source realizes cooling of the heat exchange end; When the temperature of the first refrigerant medium is greater than a preset temperature value, the second refrigerant medium flows through the compressor; when the temperature of the first refrigerant medium is less than or equal to the preset temperature value, the second refrigerant medium flows through the electric valve.

2. The pump cabinet according to claim 1, characterized in that: The second refrigerant medium can undergo a phase change during the second cycle heat exchange.

3. The pump cabinet according to claim 1, characterized in that: The first refrigerant medium includes water.

4. The pump cabinet according to claim 1, characterized in that: The first branch also includes a first pipeline and a first regulating pump; The first refrigerant is disposed in the first pipeline, and the first temperature sensor is disposed in the first pipeline to obtain a temperature change signal of the first refrigerant; The first regulating pump is arranged in the first pipeline, and can regulate the flow rate of the first refrigerant medium entering the heat exchanger according to the temperature change signal.

5. The pump cabinet according to claim 1, characterized in that: The monitor includes a pressure sensor and / or a second temperature sensor.

6. A refrigeration system, characterized in that: include: A pump cabinet as claimed in any one of claims 1 to 5; A cold source connected to the first branch of the pump cabinet; as well as The heat exchange end is connected to the second branch of the pump cabinet.

7. The refrigeration system according to claim 6, characterized in that: The cold source includes a cooling tower.

8. The refrigeration system according to claim 6, characterized in that: The refrigeration system further comprises a heat recovery device, which is connected to the cold source and is used to recover the heat of the first refrigeration medium.

9. The refrigeration system according to claim 6, characterized in that: The pump cabinet and the cold source are arranged adjacent to each other.

10. A refrigeration method, characterized in that: include: Using the first refrigerant medium, a first cycle heat exchange is formed between the heat exchanger and the cold source; Using the second refrigerant medium, a second heat exchange cycle is formed between the heat exchanger and the heat exchange end; Using the first refrigerant medium and the second refrigerant medium to realize heat exchange in the heat exchanger, so that the cold source realizes cooling of the heat exchange end; adjusting the flow rate of the second refrigerant medium entering the heat exchange end according to the temperature change signal and / or the pressure change signal of the second refrigerant medium; When the temperature of the first refrigerant medium is greater than a preset temperature value, the second refrigerant medium enters the heat exchanger through the first bypass; When the temperature of the first refrigerant medium is less than or equal to the preset temperature value, the second refrigerant medium enters the heat exchanger through the second bypass; Wherein, the first bypass and the second bypass are arranged in parallel, and the first bypass includes a compressor, and the second bypass includes an electric valve; The first refrigerant medium and the second refrigerant medium are different.

11. The refrigeration method according to claim 10, characterized in that: Using the second refrigerant medium, a second cycle heat exchange is formed between the heat exchanger and the heat exchange end, including: The second refrigerant medium can undergo a phase change when performing the second cycle heat exchange.

12. The refrigeration method according to claim 10, characterized in that: The refrigeration method further comprises: The flow rate of the first refrigerant medium entering the heat exchanger is adjusted according to the temperature change signal of the first refrigerant medium.

13. The refrigeration method according to claim 12, characterized in that: According to the temperature change of the first refrigerant medium, adjusting the flow rate of the first refrigerant medium entering the heat exchanger includes: When the temperature of the first refrigerant medium is greater than the preset temperature value, increasing the flow rate of the first refrigerant medium entering the heat exchanger; When the temperature of the first refrigerant medium is less than or equal to the preset temperature value, the flow rate of the first refrigerant medium entering the heat exchanger is reduced.

14. The refrigeration method according to claim 10, characterized in that: According to the temperature change signal and / or the pressure change signal of the second refrigerant medium, adjusting the flow rate of the second refrigerant medium entering the heat exchange end includes: When the temperature of the second refrigerant medium is greater than a preset temperature value and / or the pressure is greater than a preset pressure value, increasing the flow rate of the second refrigerant medium entering the heat exchange end; When the temperature of the second refrigerant medium is less than or equal to the preset temperature value and / or the pressure of the second refrigerant medium is less than or equal to the preset pressure value, the flow rate of the second refrigerant medium entering the heat exchange end is reduced.

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