Coolant multiplex refrigeration cooling system

Abstract

This invention provides a refrigerant reuse refrigeration and cooling system, comprising: a refrigeration unit, which has a refrigerant outlet and a refrigerant return port; a cooling unit, which includes a first cooling device, comprising a first cold side and a first hot side for mutual heat exchange; and a refrigerant redistribution device, which has a first refrigerant inlet, a first refrigerant outlet, and a refrigerant return pump; the refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side of the first cooling device, and the outlet of the first cold side of the first cooling device is connected to the refrigerant return port; the outlet of the first cold side of the first cooling device is also connected to the first refrigerant inlet, and the first refrigerant outlet is connected to the inlet of the first cold side of the first cooling device. This system reduces the power consumption of the refrigerant reuse refrigeration and cooling system.

Description

Technical Field

[0001] This application belongs to the field of beer production technology, and in particular relates to a refrigerant reuse refrigeration and cooling system. Background Technology

[0002] Currently, beer production requires a low-temperature production environment provided by a refrigeration system. Generally, a low-temperature refrigerant from the refrigeration system is input into the equipment being cooled, where it exchanges heat with the medium to be cooled. After heat exchange, the refrigerant is returned to the refrigeration system for further cooling. Taking a beer fermentation tank as an example, this standard piece of equipment in beer production has a cooling jacket on its outer wall. Multiple fermentation tanks are typically connected, with their cooling jackets linked together. A low-temperature refrigerant is input through the refrigerant inlet and output through the refrigerant outlet, achieving a circulating cooling effect between the refrigerant and the refrigeration system. In a complete fermentation process, the wort in the fermentation tank lasts approximately 20 days from start to finish. The entire process is controlled by temperature control within the fermentation tank, from the initial wort temperature of around 8°C upon entering the tank to 12-15°C during fermentation (temperature and time control vary between different manufacturers at different stages) and finally to 0-1°C in the later stages. The entire process requires a refrigeration system to provide cooling. In the early fermentation stage of beer fermentation tanks, the temperature is typically above 10°C. During this process, a large amount of CO2 gas and heat are generated, resulting in strong convection of the fermentation liquid within the large tank. The fermentation liquid and tank walls have excellent heat exchange capabilities, and a refrigerant at -1°C or even higher is sufficient to meet the temperature control requirements in the early fermentation stage. However, during the cooling process of the fermentation liquid in the beer fermentation tank, a low-temperature refrigerant at -4°C is required. In existing technologies, to meet the cooling needs of the fermentation liquid in beer fermentation tanks, the refrigeration system outputs a single low-temperature refrigerant at -4°C to each beer fermentation tank. However, inputting a -4°C refrigerant to beer fermentation tanks at different stages of the process increases the amount of -4°C refrigerant used, leading to significant power consumption in the refrigeration system. Therefore, how to design a technology to reduce the power consumption of the refrigeration system is the technical problem this invention aims to solve. Summary of the Invention

[0003] This application provides a refrigerant reuse refrigeration and cooling system, which reduces the power consumption of the refrigerant reuse refrigeration and cooling system.

[0004] One embodiment of this application provides a refrigerant reuse refrigeration and cooling system, including: A refrigeration unit is provided with a refrigerant outlet and a refrigerant return port; the refrigeration unit is configured to refrigerate the refrigerant input into the refrigerant return port and output the refrigerated refrigerant from the refrigerant outlet. The cooling unit includes a first cooling device, which includes a first cold side and a first hot side that exchange heat with each other. A refrigerant redistribution device is provided with a first refrigerant inlet, a first refrigerant outlet, and a refrigerant reuse pump; the refrigerant redistribution device is configured to adjust the flow rate of refrigerant delivered from the first refrigerant inlet to the first refrigerant outlet; the outlet of the refrigerant reuse pump is connected to the first refrigerant outlet; The refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side of the first refrigeration equipment, and the outlet of the first cold side of the first refrigeration equipment is connected to the refrigerant return port of the refrigeration unit. The outlet of the first cold side of the first cooling equipment is also connected to the first refrigerant inlet, and the first refrigerant outlet is connected to the inlet of the first cold side of the first cooling equipment. A refrigerant delivery pump is also provided between the refrigerant outlet of the refrigeration unit and the inlet of the first cold side section.

[0005] The beneficial effects compared with the prior art include at least the following: the refrigerant output from the first cold side of the first cooling equipment is delivered to the first refrigerant inlet of the refrigerant redistribution equipment, and the refrigerant redistribution equipment delivers the input refrigerant to the first cold side with corresponding refrigerant temperature requirements (meeting the refrigerant temperature requirements) for use, so that the cooling capacity of the refrigerant output from the first cold side is fully utilized for heat exchange, thereby reducing the amount of refrigerant used at the refrigerant outlet of the refrigeration unit and reducing the power consumption of the refrigeration cooling system. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is one of the schematic diagrams of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 2 This is a second schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 3 This is the third schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 4 This is the fourth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 5 This is the fifth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 6 This is the sixth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 7 This is one of the schematic diagrams of the refrigeration unit in an embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 8 This is a second schematic diagram of the refrigeration unit in one embodiment of the refrigerant reuse refrigeration and cooling system of this application; Figure 9 This is the seventh schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system of this application. Detailed Implementation

[0008] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0009] like Figure 1 As shown, one embodiment of this application provides a refrigerant reuse refrigeration and cooling system, including: The refrigeration unit 030 is provided with a refrigerant outlet 0301 and a refrigerant return port 0310. The refrigeration unit 030 is configured to refrigerate the refrigerant input into the refrigerant return port 0310 and output the refrigerated refrigerant from the refrigerant outlet 0301. Cooling unit 120, the cooling unit 120 includes a first cooling device 121, the first cooling device 121 includes a first cold side and a first hot side that exchange heat with each other; A refrigerant redistribution device 130 is provided, which includes a first refrigerant inlet 13020, a first refrigerant outlet 13010, and a refrigerant reuse pump 1303; the refrigerant redistribution device 130 is configured to regulate the refrigerant flow rate delivered from the first refrigerant inlet 13020 to the first refrigerant outlet 13010; the outlet of the refrigerant reuse pump 1303 is connected to the first refrigerant outlet 13010. The refrigerant outlet 0301 of the refrigeration unit is connected to the inlet 1211 of the first cold side of the first cooling device 121, and the outlet 1212 of the first cold side of the first cooling device 121 is connected to the refrigerant return port 0310 of the refrigeration unit. The outlet 1212 of the first cold side of the first cooling equipment is also connected to the first refrigerant inlet 13020, and the first refrigerant outlet 13010 is connected to the inlet 1211 of the first cold side of the first cooling equipment. A refrigerant delivery pump is also provided between the refrigerant outlet 0301 of the refrigeration unit and the inlet 1211 of the first cold side.

[0010] Specifically, the cooling unit 120 includes at least one first cooling device 121, and each first cooling device 121 includes at least one set of first cold side and first hot side that exchange heat with each other.

[0011] The refrigeration unit 030 can cool down the refrigerant input from the refrigerant return port 0310 of the refrigeration unit. The cooled refrigerant is transported to the first cooling device 121 through the inlet 1211 of the first cold side by the refrigerant delivery pump, and then transported to the medium to be cooled in the first hot side through the inlet 1213 of the first hot side to exchange heat with the refrigerant in the first cold side and output from the outlet 1214 of the first hot side.

[0012] After heat exchange, the refrigerant in the first cold side is discharged from the outlet 1212 of the first cold side. The refrigerant discharged from the outlet 1212 of the first cold side is transported to the refrigerant redistribution device 130 through the first refrigerant inlet 13020. The refrigerant discharged from the outlet 1212 of the first cold side that is not used by the refrigerant redistribution device 130 is transported back to the refrigeration unit 030 through the refrigerant return port 0310 of the refrigeration unit for refrigeration and cooling treatment.

[0013] The refrigerant redistribution device 130 is equipped with a refrigerant reuse pump 1303. The first refrigerant inlet 13020 is connected to the inlet of the refrigerant reuse pump 1303 via a first refrigerant reuse control valve 1301. The refrigerant reuse pump 1303 is used to regulate the flow rate of the refrigerant delivered to the first refrigerant outlet 13010. The refrigerant reuse pump 1303 can be a variable frequency pump.

[0014] The refrigerant redistribution device 130 regulates the flow rate of the refrigerant output from the first refrigerant outlet 13010. Specifically, a refrigerant pressure sensor 1305 is installed on the connecting pipe between the refrigerant pump 1303 and the first refrigerant outlet 13010. The refrigerant redistribution device 130 adjusts the speed of the refrigerant pump 1303 for constant pressure variable frequency control based on the refrigerant pressure detected by the refrigerant pressure sensor 1305. One or more refrigerant pumps 1303 can be configured to ensure that the pressure of the refrigerant output from the first refrigerant outlet 13010 remains basically constant, so that the refrigerant flow rate output from the first refrigerant outlet 13010 meets the refrigerant requirements of various cooling devices. The inlet flow rate of the cold side of different cooling devices is adjusted according to the refrigerant usage requirements of each individual cooling device.

[0015] like Figure 1 As shown, taking the first refrigeration equipment 121 as an example of a fermentation tank group for beer production, the fermentation tank group typically includes multiple fermentation tanks, and each fermentation tank is equipped with a cold-side heat exchange channel. The fermentation tank is the first hot side, and the cold-side heat exchange channel on the fermentation tank is the first cold side.

[0016] Different fermenters have different temperature control requirements in the early and late fermentation stages. The temperature of the refrigerant used in the cold-side heat exchange channel of the early fermentation fermenter can be higher than that of the refrigerant used in the cold-side heat exchange channel of the late fermentation fermenter. The refrigerant output from the cold-side heat exchange channel of the late fermentation fermenter is lower than that output from the cold-side heat exchange channel of the early fermentation fermenter. The refrigerant output from the cold-side heat exchange channel of the late fermentation fermenter and the refrigerant output from the cold-side heat exchange channel of the early fermentation fermenter are mixed in the pipeline after being output to reduce the overall temperature of the output refrigerant. In this way, the refrigerant can be delivered to the inlet 1211 of the first cold side of the early fermentation fermenter through the first refrigerant outlet 13010 of the refrigerant redistribution device 130.

[0017] The temperature of the refrigerant used in the early fermentation stage can be higher than that of the refrigerant used in the later fermentation stage. The refrigerant output from the first refrigerant outlet 13010 is supplied to the cold side heat exchange channel of the fermentation tank in the early fermentation stage for cooling. This reduces the amount of refrigerant supplied by the refrigeration unit 030 to the first cooling device 121 through the refrigerant outlet 0301, which is more conducive to reducing the energy consumption of the refrigeration unit 030.

[0018] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is delivered to the cold-side heat exchange channel of the later-stage fermentation tank. The fermentation broth in the hot-side heat exchange channel of the later-stage fermentation tank exchanges heat with the refrigerant in the cold-side heat exchange channel to cool the fermentation broth. The refrigerant output from the cold-side heat exchange channel of the later-stage fermentation tank is input into the refrigerant redistribution device 130 via the first refrigerant inlet 13020. Excess refrigerant is delivered back to the refrigeration unit 030 via the refrigerant return port 0310.

[0019] The refrigerant input from the first refrigerant inlet 13020 is delivered to the refrigerant pump 1303 via the first refrigerant reuse control valve 1301 and the refrigerant reuse check valve 1302. The refrigerant redistribution device 130 adjusts the rotation speed of the refrigerant pump 1303 based on the refrigerant pressure detected by the redistribution refrigerant pressure sensor 1305, ensuring that the pressure of the refrigerant output from the first refrigerant outlet 13010 remains essentially constant. One or more refrigerant pumps 1303 can be configured to ensure that the pressure of the refrigerant output from the first refrigerant outlet 13010 remains essentially constant, thus meeting the refrigerant requirements of the cold-side heat exchange channels of different pre-fermentation fermenters. The flow rate of the refrigerant at the inlet of the cold-side heat exchange channel of different pre-fermentation fermenters is adjusted according to their respective refrigerant usage requirements. The refrigerant output from the first refrigerant outlet 13010 is input into the cold-side heat exchange channel of the fermenter in the early stage of fermentation. The refrigerant output from the first refrigerant outlet 13010 is reused in the cold-side heat exchange channel of the fermenter in the early stage of fermentation, thereby reducing the refrigerant flow rate directly output from the refrigerant outlet 0301 of the refrigeration unit and reducing the power consumption of the refrigeration unit 030.

[0020] When the temperature of the refrigerant output from the refrigerant redistribution device 130 through the first refrigerant outlet 13010 does not meet the refrigerant temperature requirement of the inlet 1211 of the first cold side of the fermentation tank in the early stage of fermentation, the refrigerant redistribution device 130 is shut down, and the refrigerant flow rate output from the refrigerant outlet 0301 of the refrigeration unit is transported to the first cold side of the fermentation tank in the early stage of fermentation through the inlet 1211 of the first cold side to meet the cooling requirements of the fermentation tank in the early stage of fermentation.

[0021] Furthermore, such as Figure 1 As shown, the refrigerant redistribution device 130 is provided with a second refrigerant inlet 13030; The refrigerant redistribution device 130 is also configured to adjust the refrigerant flow rate delivered from the second refrigerant inlet 13030 to the first refrigerant outlet 13010; The second refrigerant inlet 13030 is connected to the inlet of the refrigerant pump 1303 through the second refrigerant return control valve 1306; The refrigerant outlet 0301 of the refrigeration unit is also connected to the second refrigerant inlet 13030.

[0022] Specifically, when the temperature of the refrigerant input to the first refrigerant inlet 13020 is too high to meet the cooling demand of the first cold side of the first cooling device 121, a portion of the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the second refrigerant inlet 13030. The refrigerant input to the second refrigerant inlet 13030 is then transported to the inlet of the refrigerant pump 1303 via the second refrigerant reuse control valve 1306. The refrigerant input to the first refrigerant inlet 13020 and the refrigerant input to the second refrigerant inlet 13030 are mixed and then transported to the first refrigerant outlet 13010 via the refrigerant pump 1303.

[0023] The refrigerant redistribution device 130 can adjust the refrigerant input flow rate of the first refrigerant inlet 13020 and the second refrigerant inlet 13030 according to the refrigerant temperature requirement output from the first refrigerant outlet 13010. After the refrigerant input from the second refrigerant inlet 13030 is mixed with the refrigerant input from the first refrigerant inlet 13020, the temperature of the refrigerant output from the first refrigerant outlet 13010 can be reduced. Furthermore, a second pneumatic valve 1307 is also installed on the connecting pipe between the second refrigerant inlet 13030 and the second reuse refrigerant control valve 1306 for on / off control.

[0024] like Figure 1 As shown, the first cooling device 121 is a fermentation tank group with a cold-side heat exchange channel as an example for explanation.

[0025] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is divided into two paths. One path of refrigerant is input into the cold-side heat exchange channel on the fermenter of the later stage of fermentation through the inlet 1211 of the corresponding first cold side section. The other path of refrigerant is transported to the refrigerant redistribution device 130 through the second refrigerant inlet 13030.

[0026] The refrigerant redistribution device 130 adjusts the opening of the second reuse refrigerant control valve 1306 based on the temperature detected by the redistribution refrigerant temperature sensor 1304 on the outlet connection pipe of the reuse refrigerant pump 1303, thereby adjusting the flow rate of the refrigerant entering the second refrigerant inlet 13030. An increase in the amount of refrigerant input into the second refrigerant inlet 13030 causes the temperature of the refrigerant output from the first refrigerant outlet 13010 to decrease, and vice versa. This achieves a basically constant temperature for the refrigerant output from the first refrigerant outlet 13010, which is then input into the cold-side heat exchange channel of the fermenter in the early stage of fermentation for heat exchange.

[0027] When the temperature of the refrigerant input at the first refrigerant inlet 13020 is higher than the refrigerant temperature required by the cold-side heat exchange channel of the pre-fermentation fermenter, the refrigerant redistribution device 130 controls the second pneumatic valve 1307 to open and adjust the opening degree of the second reuse refrigerant control valve 1306 according to the redistribution refrigerant temperature sensor 1304, thereby controlling the flow rate of the refrigerant input at the second refrigerant inlet 13030. Part of the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is transported to the refrigerant redistribution device 130 via the second refrigerant inlet 13030. The refrigerant input at the first refrigerant inlet 13020 and the refrigerant input at the second refrigerant inlet 13030 are mixed and then transported by the reuse refrigerant pump 1303 through the first refrigerant outlet 13010 and the inlet 1211 of the first cold side to the cold-side heat exchange channel of the pre-fermentation fermenter, ensuring that different pre-fermentation fermenters can stably perform temperature control.

[0028] The refrigerant redistribution device 130 uses the refrigerant pressure sensor 1305 to detect the refrigerant pressure and adjust the speed of the refrigerant pump 1303 for constant pressure variable frequency control. This allows the refrigerant input from the first refrigerant inlet 13020 and the second refrigerant inlet 13030 to be transported to the first refrigerant outlet 13010 via the refrigerant pump 1303. This adjusts the refrigerant flow rate output from the first refrigerant outlet 13010 to meet the inlet flow rate requirements of the cold-side heat exchange channels of different fermentation tanks in the early stages of fermentation.

[0029] Furthermore, such as Figure 1 As shown, the refrigerant outlet 0301 of the refrigeration unit is connected to the inlet 1211 of the first cold side through the first refrigerant control valve 121-3; The first refrigerant outlet 13010 is connected to the inlet 1211 of the first cold side via the second refrigerant control valve 121-4.

[0030] Specifically, the inlet of the cold-side heat exchange channel of each fermenter is connected to a first refrigerant control valve 121-3 and a second refrigerant control valve 121-4. The refrigerant outlet 1301 of the refrigeration unit is connected to the inlet of the cold-side heat exchange channel of the fermenter through the first refrigerant control valve 121-3, and the first refrigerant outlet 13010 is connected to the inlet of the cold-side heat exchange channel of the fermenter through the second refrigerant control valve 121-4.

[0031] For example, when the fermentation liquid in the fermenter is being temperature-controlled during the early fermentation stage, the second refrigerant control valve 121-4 is opened, and the refrigerant output from the first refrigerant outlet 13010 is delivered to the cold-side heat exchange channel of the fermenter; when the fermentation liquid in the fermenter is being cooled during the later fermentation stage, the first refrigerant control valve 121-3 is opened, and the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is sent into the cold-side heat exchange channel of the fermenter.

[0032] In one embodiment, such as Figure 3 As shown, the refrigerant reuse refrigeration and cooling system also includes a refrigerant tank 038, which is provided with a first refrigerant inlet / outlet 0381. The first refrigerant inlet / outlet 0381 is connected to the refrigerant outlet 0301 of the refrigeration unit, and the first refrigerant inlet / outlet 0381 is also connected to the inlet 1211 of the first cold side.

[0033] Specifically, the inlet 1211 of the first cold side is connected to the first refrigerant inlet / outlet 0381 and the refrigerant outlet 0301 of the refrigeration unit via a refrigerant transfer pump. The refrigerant reuse refrigeration cooling system is equipped with a refrigerant tank 038 to store the refrigerant. The bottom of the refrigerant tank 038 is provided with the first refrigerant inlet / outlet 0381. The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit can enter the refrigerant tank 038 for temporary storage through the first refrigerant inlet / outlet 0381. The refrigerant at the bottom of the refrigerant tank 038 can be transported to the first cold side of the first cooling device 121 for use through the first refrigerant inlet / outlet 0381.

[0034] The process by which the refrigerant redistribution device 130 adjusts the speed of the reuse refrigerant pump 1303 to regulate the refrigerant flow rate output from the first refrigerant outlet 13010 based on the refrigerant pressure detected by the redistribution refrigerant pressure sensor 1305, and the process by which the refrigerant redistribution device 130 adjusts the opening of the second reuse refrigerant control valve 1306 to regulate the refrigerant temperature output from the first refrigerant outlet 13010 based on the temperature detected by the redistribution refrigerant temperature sensor 1304, refer to [reference needed]. Figure 1 Explanation of the plan.

[0035] The refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is fed into the first cold side of the first cooling equipment 121 via the refrigerant transfer pump for heat exchange and cooling. When the refrigerant output from the first refrigerant inlet / outlet 0381 does not meet the cooling requirements of the first cooling equipment 121, the refrigeration unit 030 is activated, and the refrigerant output from the refrigeration unit's refrigerant outlet 0301 is fed into the first cold side of the first cooling equipment 121 via the inlet 1211. After the refrigeration unit 030 is started, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the first cold side of the first cooling device 121 through the inlet 1211 of the first cold side for heat exchange and cooling; or, when the first cooling device 121 is not used for cooling, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 for temporary storage; or, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the first cooling device 121 for use and then transported to the refrigerant tank 038 for temporary storage.

[0036] The refrigerant output from the outlet 1212 of the first refrigeration unit 121 is transported to the refrigeration unit 030 via the refrigerant return port 0310 of the refrigeration unit.

[0037] Furthermore, such as Figure 3 As shown, the refrigerant tank is provided with a second refrigerant inlet / outlet 0382, and the temperature of the refrigerant entering and exiting the second refrigerant inlet / outlet 0382 is higher than the temperature of the refrigerant entering and exiting the first refrigerant inlet / outlet 0381. The second refrigerant inlet / outlet 0382 is connected to the outlet 1212 of the first cold side of the first refrigeration equipment 121, and the second refrigerant inlet / outlet 0382 is connected to the refrigerant return port 0310 of the refrigeration unit.

[0038] Specifically, the refrigerant output from the outlet 1212 of the first cold side can also be transported to the refrigerant tank 038 through the second refrigerant inlet / outlet 0382. The refrigerant in the refrigerant tank 038 can be transported from the second refrigerant inlet / outlet 0382 to the refrigerant return port 0310 of the refrigeration unit.

[0039] like Figure 3 As shown, based on Figure 1 The technical solution is illustrated by taking the first cooling device 121 as a fermentation tank group as an example. The fermentation tank group includes multiple fermentation tanks and at least one external cooling module for fermentation liquid. The fermentation tanks are provided with cold-side heat exchange channels, and the external cooling module for fermentation liquid is provided with cold-side heat exchange channels and hot-side heat exchange channels that exchange heat with each other.

[0040] The refrigerant from the refrigerant redistribution device 130 is delivered through the first refrigerant outlet 13010 to the cold-side heat exchange channel of the fermentation tank in the first cold side section via the inlet 1211. The fermentation liquid in the fermentation tank in the first fermentation stage exchanges heat with the refrigerant to control the temperature of the fermentation liquid in the fermentation tank in the first fermentation stage.

[0041] After the initial fermentation is completed, the fermentation broth in the fermenter can be cooled down in the fermenter. The cooled fermentation broth is then output from the fermenter and pumped to the external cooling module for further cooling. Specifically, when the fermentation broth is cooled in the fermenter, the refrigerant output from the first refrigerant outlet 13010 of the refrigerant rebalancing device 130 is delivered to the cold-side heat exchange channel of the fermenter to cool the fermentation broth. When the refrigerant output from the first refrigerant outlet 13010 of the refrigerant rebalancing device 130 is insufficient to meet the cooling requirements of the fermentation broth in the fermenter, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is delivered to the cold-side heat exchange channel of the fermenter. The cooled fermentation broth output from the fermenter is pumped to the external cooling module for further cooling. The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 are delivered to the cold side heat exchange channel of the external cooling module for cooling the fermentation broth.

[0042] Alternatively, after the initial fermentation stage, the fermentation broth in the fermenter is not cooled within the fermenter but is directly pumped to the external cooling module for cooling. Specifically, the fermentation broth in the fermenter is pumped directly to the hot-side heat exchange channel of the external cooling module without cooling. The refrigerant output from the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 is input into the cold-side heat exchange channel of the external cooling module via the inlet 1211 of the first cold-side section for heat exchange and cooling. When the refrigerant output from the first refrigerant inlet / outlet 0381 does not meet the cooling requirements of the cold-side heat exchange channel of the fermenter, the refrigeration unit 030 is activated. The refrigerant output from the refrigeration unit's refrigerant outlet 0301 is input into the cold-side heat exchange channel of the external cooling module via the inlet 1211 of the first cold-side section. After the refrigeration unit 030 is started, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the cold-side heat exchange channel of the fermentation liquid external cooling module through the inlet 1211 of the first cold side section for heat exchange and cooling; or, when the cold-side heat exchange channel of the fermentation liquid external cooling module is not needed for cooling, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the refrigerant tank 038 for temporary storage through the first refrigerant inlet / outlet 0381; or, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the cold-side heat exchange channel of the fermentation liquid external cooling module for use and then transported to the refrigerant tank 038 for temporary storage.

[0043] The cooled fermentation broth output from the hot-side heat exchange channel of the external cooling module is transported to the fermenter for later-stage fermentation for cold preservation. Specifically, the refrigerant output from the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 and / or the refrigerant output from the refrigeration unit 030 through the refrigerant outlet 0301 are transported to the cold-side heat exchange channel of the fermenter for later-stage fermentation to preserve the fermentation broth in the fermenter.

[0044] The refrigerant output from the cold-side heat exchange channel of the fermenter and the refrigerant output from the cold-side heat exchange channel of the external cooling module for fermentation liquid are mixed and then transported to the refrigerant redistribution device 130 via the first refrigerant outlet 13010. Excess refrigerant is transported to the refrigeration unit 030 via the refrigerant return port 0310 and / or to the refrigerant tank 038 via the second refrigerant inlet / outlet 0382. The refrigerant output from the first refrigerant outlet 13010 is input into the cold-side heat exchange channel of the fermenter in the early stage of fermentation. When the refrigerant output from the first refrigerant outlet 13010 is insufficient to meet the refrigerant usage of the cold-side heat exchange channel of the fermenter in the early stage of fermentation, the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 083 is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020 to supplement the insufficient refrigerant.

[0045] The refrigerant output from the fermentation tank group via outlet 1212 of the first cold side is transported to the refrigerant tank 038 via the second refrigerant inlet / outlet 0382 and / or to the refrigeration unit 030 via the refrigerant return port 0310 of the refrigeration unit. After the refrigeration unit 030 is started, the refrigerant output from the fermentation tank group via outlet 1212 of the first cold side is transported back to the refrigeration unit 030 via the refrigerant return port 0310 of the refrigeration unit for cooling; alternatively, the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 is transported back to the refrigeration unit 030 via the refrigerant return port 0310 of the refrigeration unit for cooling; or, both the refrigerant output from the fermentation tank group via outlet 1212 of the first cold side and the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 are transported back to the refrigeration unit 030 via the refrigerant return port 0310 of the refrigeration unit for cooling.

[0046] Furthermore, such as Figure 3 As shown, the refrigerant redistribution device 130 is provided with a second refrigerant inlet 13030; The refrigerant redistribution device 130 is also configured to adjust the refrigerant flow rate delivered from the second refrigerant inlet 13030 to the first refrigerant outlet 13010; The second refrigerant inlet 13030 is connected to the inlet of the refrigerant pump 1303 through the second refrigerant return control valve 1306; The refrigerant outlet 0301 of the refrigeration unit is also connected to the second refrigerant inlet 13030, and the first refrigerant inlet / outlet 0381 is also connected to the second refrigerant inlet 13030.

[0047] Specifically, when the temperature of the refrigerant input to the first refrigerant inlet 13020 is too high to meet the cooling demand of the first cold side of the first cooling device 121, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 are transported to the second refrigerant inlet 13030. The refrigerant input to the second refrigerant inlet 13030 is then transported to the inlet of the refrigerant pump 1303 via the second refrigerant reuse control valve 1306. The refrigerant input to the first refrigerant inlet 13020 and the refrigerant input to the second refrigerant inlet 13030 are mixed and then transported to the first refrigerant outlet 13010 via the refrigerant reuse pump 1303.

[0048] Regarding the process by which the refrigerant redistribution device 130 controls the opening of the second pneumatic valve 1307 and adjusts the opening degree of the second reuse refrigerant control valve 1306 based on the redistribution refrigerant temperature sensor 1304, thereby adjusting the refrigerant temperature output from the first refrigerant outlet 13010, refer to... Figure 1 Explanation of the plan.

[0049] like Figure 3As shown, the first cooling device 121 is used as an example of a fermentation tank group. The fermentation tank group includes multiple fermentation tanks and at least one external cooling module for fermentation liquid. The fermentation tanks are provided with cold-side heat exchange channels, and the external cooling module for fermentation liquid is provided with cold-side heat exchange channels and hot-side heat exchange channels that exchange heat with each other.

[0050] When the temperature of the refrigerant output from the refrigerant redistribution device 130 through the first refrigerant outlet 13010 does not meet the refrigerant temperature requirements of the cold-side heat exchange channel of the fermenter in the early stage of fermentation, the refrigerant output from the refrigeration unit 030 through the refrigeration unit refrigerant outlet 0301 and / or the refrigerant output from the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 is transported to the second refrigerant inlet 13030. The refrigerant input into the second refrigerant inlet 13030 is transported to the inlet of the refrigerant pump 1303 via the second refrigerant reuse control valve 1306. The refrigerant input into the first refrigerant inlet 13020 and the refrigerant input into the second refrigerant inlet 13030 are mixed and then transported to the first refrigerant outlet 13010 via the refrigerant pump 1303. The refrigerant redistribution device 130 adjusts the opening of the second reuse refrigerant control valve 1306 according to the redistribution refrigerant temperature sensor 1304 on the outlet connection pipe of the reuse refrigerant pump 1303, thereby adjusting the flow rate of the refrigerant entering the second refrigerant inlet 13030 to reduce the temperature of the refrigerant output from the first refrigerant outlet 13010, so as to achieve a basically constant temperature of the refrigerant output from the first refrigerant outlet 13010 and input it into the cold side heat exchange channel of the fermenter in the early stage of fermentation for heat exchange.

[0051] In one embodiment, such as Figure 2 As shown, the refrigeration unit 030 includes a condenser 035, a liquid receiver 036, and a refrigeration unit 0300; The refrigeration unit 0300 includes a refrigeration compressor unit 034 and an evaporator 037. The evaporator 037 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the evaporator 037 is connected to the suction port of the refrigeration compressor unit 034. The exhaust port of the refrigeration compressor unit 034 is connected to the hot side air inlet of the condenser 035, the hot side liquid outlet of the condenser 035 is connected to the liquid inlet of the liquid receiver 036, and the liquid outlet of the liquid receiver 036 is connected to the inlet of the cold side heat exchange channel of the evaporator 037. The outlet of the hot-side heat exchange channel of the evaporator 037 is configured as the refrigerant outlet of the refrigeration unit 0301, and the inlet of the hot-side heat exchange channel of the evaporator 037 is configured as the refrigerant return port of the refrigeration unit 0310.

[0052] Specifically, the refrigeration compressor unit 034 includes at least one refrigeration compressor, which can be a screw compressor, a reciprocating compressor, or a centrifugal compressor. When the refrigeration compressor unit 034 is equipped with multiple refrigeration compressors, these compressors are used in combination to meet the different cooling capacity requirements of the refrigeration equipment.

[0053] The condenser 035 condenses the gaseous refrigerant output from the exhaust port of the refrigeration compressor unit 034 into liquid refrigerant. The liquid refrigerant is output from the hot-side liquid outlet of the condenser 035 to the receiver 036. The liquid outlet of the receiver 036 delivers the liquid refrigerant to the inlet of the cold-side heat exchange channel of the evaporator 037. A heat transfer fluid is input into the hot-side heat exchange channel of the evaporator 037, and the heat transfer fluid exchanges heat with the liquid refrigerant in the evaporator 037. The gaseous refrigerant output from the outlet of the cold-side heat exchange channel of the evaporator is delivered to the suction port of the refrigeration compressor unit 034, and the cooled heat transfer fluid is output from the outlet of the hot-side heat exchange channel of the evaporator 037.

[0054] The evaporator 037 can be a conventional heat exchanger such as a plate heat exchanger or a shell and tube heat exchanger, and the condenser can be a conventional evaporative condenser or a water-cooled condenser. The refrigerant used is ammonia or fluorinated oxygen.

[0055] In one embodiment, such as Figure 5 As shown, the refrigerant reuse refrigeration and cooling system also includes a second cooling device 122; The second cooling device 122 includes a second cold side and a second hot side that exchange heat with each other; The refrigerant return port 0310 of the refrigeration unit includes a first refrigerant return port 0302 and a second refrigerant return port 0303. The temperature of the refrigerant input to the second refrigerant return port 0303 is lower than the temperature of the refrigerant input to the first refrigerant return port 0302. The refrigerant tank 038 is provided with a third refrigerant inlet / outlet 0383, and the temperature of the refrigerant entering and exiting the third refrigerant inlet / outlet 0383 is higher than the temperature of the refrigerant entering and exiting the second refrigerant inlet / outlet 0382. The outlet 1222 of the second cold side of the second cooling device 122 is connected to the third refrigerant inlet / outlet 0383. The outlet 1222 of the second cold side of the second cooling device 122 is also connected to the refrigerant return port 0302 of the refrigeration unit. The third refrigerant inlet / outlet 0383 is also connected to the refrigerant return port 0302 of the refrigeration unit. The outlet 1212 of the first cold side of the first refrigeration equipment 121 is also connected to the refrigerant return port 2 0303 of the refrigeration unit, and the second refrigerant inlet / outlet 0382 is also connected to the refrigerant return port 2 0303 of the refrigeration unit. The first refrigerant outlet 13010 is also connected to the inlet 1221 of the second cold side of the second cooling equipment 122.

[0056] Specifically, the cooling unit 120 includes at least one second cooling device 122. The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is transported to the second cooling device 122 through the inlet 1221 of the second cold side. The refrigerant in the second cold side of the second cooling device 122 exchanges heat with the heat exchange medium to be exchanged in the second hot side.

[0057] The refrigeration unit 030 is configured to refrigerate the refrigerant input at the refrigerant return port 0302 and output the refrigerated refrigerant at the refrigerant outlet 0301; the refrigeration unit 030 is also configured to refrigerate the refrigerant input at the refrigerant return port 0303 and output the refrigerated refrigerant at the refrigerant outlet 0301.

[0058] The inlet 1221 of the second cold side of the second cooling device 122 receives the refrigerant output from the outlet 1212 of the first cold side of the first cooling device 121 to provide cooling capacity. The second cold side of the second cooling device 122 does not directly use the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038. On the one hand, this increases the heat exchange capacity per unit of refrigerant and improves the efficiency of refrigerant use. On the other hand, it is no longer limited by the constraint that the refrigerant flow rate of the cold side of the second cooling device 122 and the first cooling device 121 must be the same. This relatively maintains the independence of the operation of the first cooling device 121 and the second cooling device 122, improves the operational stability of both, and expands the applicability of the second cooling device 122.

[0059] like Figure 5 As shown, the first cooling device 121 is a pre-filter quenching device before filtration in the beer production process, and the second cooling device 122 is an ice water cooling module, which will be used as an example for explanation. Both the pre-filter quenching device and the ice water cooling module are plate heat exchangers.

[0060] During the use of refrigerant in the first refrigeration unit 121 and the second refrigeration unit 122, the entry and exit of refrigerant in the refrigerant tank 038 is related to the start-up, shutdown and operation of the refrigeration unit 030.

[0061] During the cooling process of the pre-filter quenching equipment, the refrigerant in the refrigerant tank 038 is preferentially used to transport the refrigerant to the cold-side heat exchange channel of the pre-filter quenching equipment. Specifically, the refrigerant output from the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 is input into the cold-side heat exchange channel of the pre-filter quenching equipment through the inlet 1211 of the first cold side for heat exchange and cooling. When the refrigerant output from the first refrigerant inlet / outlet 0381 does not meet the cooling requirements of the pre-filter quenching equipment, the refrigeration unit 030 is started, and the refrigerant output from the refrigeration unit's refrigerant outlet 0301 is input into the cold-side heat exchange channel of the pre-filter quenching equipment through the inlet 1211 of the first cold side. After the refrigeration unit 030 is started, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the cold side heat exchange channel of the pre-filter quenching equipment through the inlet 1211 of the first cold side for heat exchange and cooling; or, when the pre-filter quenching equipment is not used for cooling, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the refrigerant tank 038 for temporary storage through the first refrigerant inlet / outlet 0381; or, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the pre-filter quenching equipment for use and then transported to the refrigerant tank 038 for temporary storage.

[0062] The refrigerant output from the outlet 1212 of the first cold side section of the cold side heat exchange channel of the pre-filter quenching equipment is transported to the refrigerant redistribution device 130 for reuse via the first refrigerant outlet 13010. The refrigerant output from the outlet 1212 of the first cold side section of the pre-filter quenching equipment that is not used by the refrigerant redistribution device 130 is transported to the refrigerant tank 038 via the second refrigerant inlet / outlet 0382 and / or to the refrigeration unit 030 via the refrigeration unit refrigerant return port 0303. After the refrigeration unit 030 is started, the refrigerant output from the outlet 1212 of the first cold side of the pre-filter quenching device is transported back to the refrigeration unit 030 through the refrigerant return port 2 0303 for refrigeration and cooling. Alternatively, the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 is transported back to the refrigeration unit 030 through the refrigerant return port 2 0303 for refrigeration and cooling. Or, the refrigerant output from the outlet 1212 of the first cold side of the pre-filter quenching device and the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 are both transported back to the refrigeration unit 030 through the refrigerant return port 2 0303 for refrigeration and cooling.

[0063] The refrigerant output from the outlet 1222 of the second cold side section of the cold-side heat exchange channel of the chilled water cooling module is transported to the refrigerant tank 038 via the third refrigerant inlet / outlet 0383 and / or to the refrigeration unit 030 via the refrigerant return port 0302 of the refrigeration unit. After the refrigeration unit 030 is started, the refrigerant output from the outlet 1222 of the second cold side section of the chilled water cooling module is transported back to the refrigeration unit 030 via the refrigerant return port 0302 of the refrigeration unit for cooling treatment; or, the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 is transported back to the refrigeration unit 030 via the refrigerant return port 0302 of the refrigeration unit for cooling treatment; or, the refrigerant output from the outlet 1222 of the second cold side section of the chilled water cooling module and the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 are both transported back to the refrigeration unit 030 via the refrigerant return port 0302 of the refrigeration unit for cooling treatment.

[0064] In addition, when the first cooling device 121 and the second cooling device 122 are not in use, the refrigeration unit 030 can also be started during off-peak electricity hours. The refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 is transported back to the refrigeration unit 030 for cooling through the second refrigerant return port 0303 of the refrigeration unit. The refrigerant output from the first refrigerant outlet 0301 of the refrigeration unit is input into the refrigerant tank 038 for storage through the first refrigerant inlet / outlet 0381, and the refrigeration is temporarily stored in the refrigerant tank 038. The cooled refrigerant; or, the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 is transported back to the refrigeration unit 030 for cooling through the refrigerant return port 0302 of the refrigeration unit, and the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is input into the refrigerant tank 038 for storage through the first refrigerant inlet / outlet 0381. The cooled refrigerant is temporarily stored in the refrigerant tank 038 to reduce the operating time of the refrigeration unit 030 during peak power consumption periods, thereby saving electricity costs.

[0065] By configuring the refrigerant tank 038, the start-up frequency of the refrigeration unit 030 can be reduced, and the operating conditions of the refrigeration unit in the refrigeration unit 030 can be optimized to reduce energy consumption.

[0066] In one embodiment, such as Figure 5 As shown, the refrigeration unit includes a condenser 035, a liquid receiver 036, and multiple refrigeration units 0300; the hot-side liquid outlet of the condenser 035 is connected to the liquid inlet of the liquid receiver 036. The plurality of refrigeration units 0300 include a first refrigeration unit 0300-1 and a second refrigeration unit 0300-2; The first refrigeration unit 0300-1 includes a first refrigeration compressor unit 034-1 and a first evaporator 037-1. The first evaporator 037-1 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the first evaporator 037-1 is connected to the suction port of the first refrigeration compressor unit 034-1. The exhaust port of the first refrigeration compressor unit 034-1 is connected to the hot-side air inlet of the condenser 035. The inlet of the cold-side heat exchange channel of the first evaporator 037-1 is connected to the liquid outlet of the liquid receiver 036. The second refrigeration unit 0300-2 includes a second refrigeration compressor unit 034-2 and a second evaporator 037-2. The second evaporator 037-2 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the second evaporator 037-2 is connected to the suction port of the second refrigeration compressor unit 034-2. The exhaust port of the second refrigeration compressor unit 034-2 is connected to the hot-side inlet of the condenser 035. The inlet of the cold-side heat exchange channel of the second evaporator 037-2 is connected to the outlet of the liquid receiver 036. The suction pressure of the first refrigeration compressor unit 034-1 is higher than that of the second refrigeration compressor unit 034-2; The outlet of the hot-side heat exchange channel of the second evaporator 037-2 is configured as the refrigerant outlet of the refrigeration unit 0301, the inlet of the hot-side heat exchange channel of the first evaporator 037-1 is configured as the refrigerant return port of the refrigeration unit 0302, and the inlet of the hot-side heat exchange channel of the second evaporator 037-2 is configured as the refrigerant return port of the refrigeration unit 0303. The inlet of the hot-side heat exchange channel of the first evaporator 037-1 is connected to the third refrigerant inlet / outlet 0383 and the outlet 1222 of the second cold side through the first pump 03021, and the outlet of the hot-side heat exchange channel of the first evaporator 037-1 is connected to the second refrigerant inlet / outlet 0382. The inlet of the hot-side heat exchange channel of the second evaporator 037-2 is connected to the outlet of the hot-side heat exchange channel of the first evaporator 037-1, the second refrigerant inlet / outlet 0382, and the outlet 1212 of the first cold-side section via the second pump 03031. The outlet of the hot-side heat exchange channel of the second evaporator 037-2 is connected to the first refrigerant inlet / outlet 0381 and the inlet 1211 of the first cold-side section.

[0067] Specifically, the refrigeration compressor unit 034 includes a first refrigeration compressor unit 034-1 and a second refrigeration compressor unit 034-2. The first refrigeration compressor unit 034-1 includes at least one refrigeration compressor, and the second refrigeration compressor unit 034-2 includes at least one refrigeration compressor. The evaporator 037 includes a first evaporator 037-1 and a second evaporator 037-2.

[0068] The refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 and / or the refrigerant output from the outlet 1222 of the second cold side of the second refrigeration equipment 122 are transported to the first refrigeration unit 0300-1 via the first pump 03021 and the refrigerant return port 0302 of the refrigeration unit. The refrigerant is input into the hot side heat exchange channel of the first evaporator 037-1, and the refrigerant exchanges heat with the refrigerant in the cold side heat exchange channel of the first evaporator 037-1. The refrigerant output from the hot-side heat exchange channel of the first evaporator 037-1, the refrigerant output from the refrigerant tank 038 through the second refrigerant inlet / outlet 0382, and / or the refrigerant output from the outlet 1212 of the first cold-side section of the first refrigeration equipment 121 are transported by the second pump 03031 to the inlet of the hot-side heat exchange channel of the second evaporator 037-2. After further heat exchange and cooling with the refrigerant in the second evaporator 037-2, the refrigerant is output from the outlet of the hot-side heat exchange channel of the second evaporator 037-2, i.e., the refrigerant outlet of the refrigeration unit 0301.

[0069] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the first refrigeration equipment 121 via the inlet 1211 of the first cold side, and / or to the refrigerant tank 038 via the first refrigerant inlet / outlet 0381, and / or to the refrigerant redistribution equipment 130 via the second refrigerant inlet 13030.

[0070] The refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is transported by the refrigerant transfer pump to the first cooling equipment 121 via the inlet 1211 of the first cold side and / or to the refrigerant redistribution equipment 130 via the second refrigerant inlet 13030.

[0071] For the refrigeration unit 030, under the same cooling load conditions, the refrigerant return temperature of the existing refrigeration unit is lowered due to the mixing of high and low temperatures at the refrigerant outlet of different cooling equipment, resulting in a decrease in the average temperature of the refrigerant returning to the refrigeration unit. This reduces the temperature difference between the output and input refrigerant of the refrigeration unit, increases the flow rate of the refrigerant for cooling, and increases the power consumption for transporting the refrigerant, leading to a large investment in related equipment and supporting facilities.

[0072] The technical solution of this application firstly addresses the problem of low refrigerant return temperature and high refrigerant flow rate in refrigeration units caused by the mixing of high and low temperature refrigerants at the outlets of different refrigeration equipment. It separates the high and low temperature refrigerant outlet temperatures of different refrigeration equipment. Then, the lower temperature refrigerant portion output from the outlet 1211 of the first cold side of the first refrigeration equipment 121 is transported to the refrigerant redistribution device 130. After precise temperature control by the refrigerant redistribution device 130, it is returned to the first refrigeration equipment 121 for reuse. The lower temperature refrigerant outlet portion from different refrigeration stages of the same refrigeration equipment is reused in other refrigeration stages to improve refrigerant utilization efficiency and reduce refrigerant flow rate. Simultaneously, the lower temperature refrigerant portion output from the outlet 1211 of the first cold side of the first refrigeration equipment 121 is transported to the refrigerant redistribution device 130, and then... After precise temperature control, the refrigerant is delivered to the second cooling device 122 for reuse. The refrigerant with a higher temperature output from the outlet 1222 of the second cold side of the second cooling device 122 and / or the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 are delivered to the refrigeration unit 030 via the refrigerant return port 0302. By reusing, the direct cooling supply from the refrigeration unit 030 to the second cooling device 122 is reduced. The refrigerant output from the outlet 1222 of the second cold side of the second cooling device 122 and the refrigerant output from the outlet 1212 of the first cold side of the first cooling device are returned to the refrigeration unit 030 separately, thereby increasing the temperature of the refrigerant input to the refrigerant return port 0302 of the refrigeration unit. This creates better conditions for improving the energy-saving effect of the segmented cooling of the refrigeration unit 030. By cooling the temperature in segments through the refrigeration unit 030, the overall energy efficiency is improved and the power consumption for cooling is saved.

[0073] Furthermore, such as Figure 6 As shown, the plurality of refrigeration units 0300 also include a third refrigeration unit 0300-3; The third refrigeration unit 0300 includes a third refrigeration compressor unit 034-3 and a third evaporator 037-3. The third evaporator 037-3 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the third evaporator 037-3 is connected to the suction port of the third refrigeration compressor unit 034-3. The exhaust port of the third refrigeration compressor unit 034-3 is connected to the hot-side inlet of the condenser 035. The inlet of the cold-side heat exchange channel of the third evaporator 037-3 is connected to the outlet of the liquid receiver 036. The suction pressure of the first refrigeration compressor unit 034-1 is higher than that of the third refrigeration compressor unit 034-3, and the suction pressure of the third refrigeration compressor unit 034-3 is higher than that of the second refrigeration compressor unit 034-2. The outlet of the hot-side heat exchange channel of the first evaporator 037-1 is connected to the second refrigerant inlet / outlet 0382 through the hot-side heat exchange channel of the third evaporator 037-3. The inlet of the hot-side heat exchange channel of the second evaporator 037-2 is connected to the outlet of the hot-side heat exchange channel of the first evaporator 037-1 through the second pump 03031 and the hot-side heat exchange channel of the third evaporator 037-3 in sequence.

[0074] Specifically, the refrigeration compressor unit 034 also includes a third refrigeration compressor unit 034-3, which includes at least one refrigeration compressor, and the evaporator 037 also includes a third evaporator 037-3.

[0075] The inlet of the hot-side heat exchange channel of the second evaporator 037-2 is supplied with refrigerant by the second pump 03031 at a set flow rate. The refrigerant input into the inlet of the hot-side heat exchange channel of the second evaporator 037-2 comes from one or more of the following: the refrigerant output from the outlet of the hot-side heat exchange channel of the first evaporator 037-1 and the third evaporator 037-3 which are connected in series; the refrigerant output from the second refrigerant inlet / outlet 0832 of the refrigerant tank 038; and the refrigerant output from the outlet 1212 of the first cold-side section of the first cooling device 121.

[0076] When the first pump 03021 and its connected first refrigeration unit 0300-1 and third refrigeration unit 0300-3, and the second pump 03031 and its connected second refrigeration unit 0300-2 are operating synchronously, the refrigerant from the outlet of the hot-side heat exchange channel of the first evaporator 037-1 and the third evaporator 037-3 in series is preferentially supplied to the second pump 03031 and delivered to the inlet of the hot-side heat exchange channel of the second evaporator 037-2. Any shortfall is supplemented by the refrigerant output through the second refrigerant inlet / outlet 0832 of the refrigerant tank 038, and / or the refrigerant output from the outlet 1212 of the first cold-side section of the first refrigeration equipment 121.

[0077] When the first cooling equipment 121 has no refrigerant returning to the second refrigerant inlet / outlet 0382 of the refrigerant tank 038, the refrigerant output from the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 is transported to the inlet of the heat exchange channel on the hot side of the second evaporator 037-2 by the second pump 03031.

[0078] When the first cold side outlet 1212 of the first refrigeration equipment 121 outputs refrigerant, the refrigerant output from the first cold side outlet 1212 is preferentially transported by the second pump 03031 to the inlet of the hot side heat exchange channel of the second evaporator 037-2 to replenish the refrigerant. The remaining refrigerant enters the second refrigerant inlet / outlet 0382 of the refrigerant tank 038 for buffering.

[0079] If the refrigerant at the outlet of the hot-side heat exchange channel of the first evaporator 037-1 and the third evaporator 037-3 in series exceeds the demand of the second pump 03031, the excess refrigerant will be sent to the second refrigerant inlet / outlet 0382 buffer of the refrigerant tank 038. In addition, the refrigerant output from the outlet 1212 of the first cold side is also sent to the second refrigerant inlet / outlet 0382 buffer of the refrigerant tank 038.

[0080] When the second pump 03031 and the second refrigeration unit 0300-2 are in a stopped state, the refrigerant output from the hot-side heat exchange channel outlets of the first evaporator 037-1 and the third evaporator 037-3 in the first refrigeration unit 0300-1 and the third refrigeration unit 0300-3 in the running state will be delivered to the second refrigerant inlet / outlet 0382 buffer of the refrigerant tank 038. In addition, the refrigerant output from the outlet 1212 of the first cold side is also delivered to the second refrigerant inlet / outlet 0382 buffer of the refrigerant tank 038.

[0081] The multi-stage refrigeration unit 030, in conjunction with multiple refrigerant inlets and outlets of the refrigerant tank 038, adapts to the mismatch between the refrigerant demand of the first and second refrigeration devices 121 and the refrigerant supply of the refrigeration unit 030 by adjusting the refrigerant output and return flow through the different refrigerant inlets and outlets of the refrigerant tank 038. This allows the refrigeration unit 030 to operate at full load after startup, improving refrigeration efficiency and avoiding frequent start-ups. In this embodiment, the refrigeration unit 030 employs a three-stage cooling scheme for the high-temperature refrigerant input through the refrigerant return port 0302. Figure 5 The two-stage cooling solution in the example has higher overall energy efficiency and is more energy-saving.

[0082] In one embodiment, such as Figure 7 As shown, the refrigeration unit 030 includes at least one refrigeration unit 0300; the refrigeration unit 0300 includes a refrigeration compressor unit 034, an evaporator 037 and a condenser 035, the evaporator 037 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange, and the outlet of the cold-side heat exchange channel of the evaporator 037 is connected to the suction port of the refrigeration compressor unit 034; The exhaust port of the refrigeration compressor unit 034 is connected to the hot-side air inlet of the condenser 035, and the hot-side liquid outlet of the condenser 035 is connected to the inlet of the cold-side heat exchange channel of the evaporator 037. The outlet of the hot-side heat exchange channel of the evaporator 037 is configured as the refrigerant outlet of the refrigeration unit 0301, and the inlet of the hot-side heat exchange channel of the evaporator 037 is configured as the refrigerant return port of the refrigeration unit 0302.

[0083] Specifically, based on Figure 2 The proposed solution Figure 7The refrigeration unit 030 in the middle and Figure 2 Unlike the refrigeration unit 030, the refrigeration compressor unit 034, evaporator 037 and condenser 035 constitute a refrigeration unit 0300, which forms a skid-mounted structure.

[0084] Condenser 035 employs a shell-and-tube heat exchanger. The hot-side heat exchange channels of condenser 035 are connected to refrigeration compressor unit 034 and evaporator 037, respectively. The cooled heat exchange medium is input into the cold-side heat exchange channel of condenser 035. For example, the cooled heat exchange medium can be supplied to the cold-side heat exchange channel of condenser 035 via a cooling tower. Specifically, the cooled heat exchange medium is output from the cooling tower through a circulating water outlet and pumped to the cold-side heat exchange channel of condenser 035. The heat exchange medium exchanges heat with the refrigerant in condenser 035, and the heat exchange medium after heat exchange is then returned to the cooling tower for further cooling.

[0085] In one embodiment, such as Figure 9 As shown, the refrigerant reuse refrigeration and cooling system also includes a refrigerant tank 038. The refrigerant tank 038 is provided with a first refrigerant inlet / outlet 0381, a second refrigerant inlet / outlet 0382, and a third refrigerant inlet / outlet 0383. The temperature of the refrigerant entering or exiting the third refrigerant inlet / outlet 0383 is higher than the temperature of the refrigerant entering or exiting the second refrigerant inlet / outlet 0382, and the temperature of the refrigerant entering or exiting the second refrigerant inlet / outlet 0382 is higher than the temperature of the refrigerant entering or exiting the first refrigerant inlet / outlet 0381. The refrigeration unit 030 includes a plurality of refrigeration units 0300, and the plurality of refrigeration units include a first refrigeration unit 0300-1 and a second refrigeration unit 0300-2; The first refrigeration unit 0300-1 includes a first refrigeration compressor unit 034-1, a first evaporator 037-1, and a first condenser 035-1. The first evaporator 037-1 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The first condenser is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the first evaporator 037-1 is connected to the suction port of the first refrigeration compressor unit 034-1. The exhaust port of the first refrigeration compressor unit 034-1 is connected to the hot-side air inlet of the hot-side heat exchange channel of the first condenser 035-1. The inlet of the cold-side heat exchange channel of the first evaporator 037-1 is connected to the liquid outlet of the hot-side heat exchange channel of the first condenser 035-1. The second refrigeration unit 0300-2 includes a second refrigeration compressor unit 034-2, a second evaporator 037-2, and a second condenser 035-2. The second evaporator 037-2 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The second condenser 035-2 is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the second evaporator 037-2 is connected to the suction port of the second refrigeration compressor unit 034-2. The exhaust port of the second refrigeration compressor unit 034-2 is connected to the hot-side air inlet of the hot-side heat exchange channel of the second condenser 035-2. The inlet of the cold-side heat exchange channel of the second evaporator 037-2 is connected to the liquid outlet of the hot-side heat exchange channel of the second condenser 035-2. The suction pressure of the first refrigeration compressor unit 034-1 is higher than that of the second refrigeration compressor unit 034-2; The outlet of the hot-side heat exchange channel of the second evaporator 037-2 is configured as the refrigerant outlet of the refrigeration unit 0301, the inlet of the hot-side heat exchange channel of the first evaporator 037-1 is configured as the refrigerant return port of the refrigeration unit 0302, and the inlet of the hot-side heat exchange channel of the second evaporator 037-2 is configured as the refrigerant return port of the refrigeration unit 0303. The inlet of the hot-side heat exchange channel of the first evaporator 037-1 is connected to the third refrigerant inlet / outlet 0383 and the outlet 1222 of the second cold side through the first pump 03021, and the outlet of the hot-side heat exchange channel of the first evaporator 037-1 is connected to the second refrigerant inlet / outlet 0382. The inlet of the hot-side heat exchange channel of the second evaporator 037-2 is connected to the outlet of the hot-side heat exchange channel of the first evaporator 037-1, the second refrigerant inlet / outlet 0382, and the outlet 1212 of the first cold-side section via the second pump 03031. The outlet of the hot-side heat exchange channel of the second evaporator 037-2 is connected to the first refrigerant inlet / outlet 0381 and the inlet 1211 of the first cold-side section.

[0086] Specifically, based on Figure 7 The proposed solution Figure 9 The refrigeration unit 030 includes multiple refrigeration units 0300. The cooling process of the refrigerant in the hot-side heat exchange channels of the first evaporator 037-1 and the second evaporator 037-2 can be referenced. Figure 5 Explanation of the Chinese solution.

[0087] The hot-side heat exchange channel of the first condenser 035-1 is connected to the cold-side heat exchange channels of the first refrigeration compressor unit 034-1 and the first evaporator 037-1 in the first refrigeration unit 0300-1. The hot-side heat exchange channel of the second condenser 035-2 is connected to the cold-side heat exchange channels of the second refrigeration compressor unit 034-2 and the second evaporator 037-2 in the second refrigeration unit 0300-2.

[0088] The first condenser 035-1 and the second condenser 035-2 adopt shell and tube heat exchangers. The heat exchange medium after cooling in the cooling tower is output through the circulating water outlet and pumped to the cold side heat exchange channel of the first condenser 035-1 and the cold side heat exchange channel of the second condenser 035-2. The heat exchange medium exchanges heat with the refrigerant in the first condenser 035-1 and the second condenser 035-2. After heat exchange, the heat exchange medium is then sent back to the cooling tower for cooling.

[0089] The refrigerant tank 038 includes two tank bodies 038-1 and 038-2 connected in series. The first tank body 038-1 is provided with a third refrigerant inlet / outlet 0383 and a second refrigerant inlet / outlet 0382-1. The second tank body 038-2 is provided with a first refrigerant inlet / outlet 0381 and a second refrigerant inlet / outlet 0382-2. The second refrigerant inlet / outlet 0382-1 and the second refrigerant inlet / outlet 0382-2 are connected and both are used as the second refrigerant inlet / outlet 0382 of the refrigerant tank 038.

[0090] Furthermore, such as Figure 9 As shown, the refrigeration unit 030 also includes multiple dry coolers 03000, including a first dry cooler 0305 and a second dry cooler 0306. The first dry cooler 0305 is provided with a first refrigerant inlet 03051 and a first refrigerant outlet 03052. The first dry cooler 0305 is configured to cool the refrigerant input into the first refrigerant inlet 03051 and output the cooled refrigerant from the first refrigerant outlet 03052. The first refrigerant inlet 03051 and the first refrigerant outlet 03052 are respectively connected to the connecting pipe between the inlet of the heat exchange channel on the hot side of the first evaporator and the first pump 03021. The second dry cooler 0306 is provided with a second refrigerant inlet 03061 and a second refrigerant outlet 03062. The second dry cooler 0306 is configured to cool the refrigerant input into the second refrigerant inlet 03061 and output the cooled refrigerant from the second refrigerant outlet 03062. The second refrigerant inlet 03061 and the second refrigerant outlet 03062 are respectively connected to the connecting pipe between the inlet of the hot side heat exchange channel of the second evaporator and the second pump 03021.

[0091] Specifically, a first butterfly valve 03055 is installed on the connecting pipe between the inlet of the heat exchange channel on the hot side of the first evaporator 037-1 and the first pump 03021. The first refrigerant inlet 03051 of the first dry cooler 0305 is connected to the inlet of the first butterfly valve 03055 through a second butterfly valve 03053, and the first refrigerant outlet 03052 of the first dry cooler 0305 is connected to the outlet of the first butterfly valve 03055 through a third butterfly valve 03054.

[0092] A fourth butterfly valve 03065 is installed on the connecting pipe between the inlet of the heat exchange channel on the hot side of the second evaporator 037-2 and the second pump 03031. The second refrigerant inlet 03061 of the second dry cooler 0306 is connected to the inlet of the fourth butterfly valve 03065 through the fifth butterfly valve 03063. The second refrigerant outlet 03062 of the second dry cooler 0306 is connected to the outlet of the fourth butterfly valve 03065 through the sixth butterfly valve 03064.

[0093] The first dry cooler 0305 first performs heat exchange and cooling treatment on the refrigerant. The cooled refrigerant is then output from the first dry cooler 0305 and input into the hot-side heat exchange channel of the first evaporator 037-1. The second dry cooler 0306 first performs heat exchange and cooling treatment on the refrigerant. The cooled refrigerant is then output from the second dry cooler 0306 and input into the hot-side heat exchange channel of the second evaporator 037-2 for further cooling treatment.

[0094] Taking the first dry cooler 0305 as an example, during the operation of the first dry cooler 0305, the first butterfly valve 03055 is closed, while the second butterfly valve 03053 and the third butterfly valve 03054 are open. The refrigerant delivered by the first pump 03021 is transported to the first dry cooler 0305 through the first refrigerant inlet 03051 to exchange heat with the outside air and cool down. The cooled refrigerant is then transported from the first refrigerant outlet 03052 to the inlet of the hot-side heat exchange channel of the first evaporator 037-1. If the temperature of the refrigerant output from the first refrigerant outlet 03052 meets the usage requirements, the first refrigeration unit 0300-1 does not start, and the refrigerant is output from the outlet of the hot-side heat exchange channel of the first evaporator 037-1. Conversely, if the temperature is not suitable, the first refrigeration unit 0300-1 starts to further cool the refrigerant through the first evaporator 037-1.

[0095] The operation of the second dry cooler 0306 is similar to that of the first dry cooler 0305, and the operation of the first dry cooler 0305 can be referred to.

[0096] By employing the first dry cooler 0305 and the second dry cooler 0306 to cool the flowing refrigerant, the cooling capacity of the outside atmosphere can be used to cool the refrigerant, thereby reducing the power consumption of the refrigeration unit.

[0097] In one embodiment, such as Figure 8 As shown, the refrigeration unit 030 includes at least one dry cooler 03000, which is provided with a refrigerant inlet and a refrigerant outlet. The dry cooler 03000 is configured to cool the refrigerant input through the refrigerant inlet and output the cooled refrigerant through the refrigerant outlet. The refrigerant outlet of the dry cooler 03000 is configured as the refrigerant outlet of the refrigeration unit 0301, and the refrigerant inlet of the dry cooler 03000 is configured as the refrigerant return port of the refrigeration unit 0302.

[0098] Specifically, during the use of the dry cooler 03000, the refrigerant is transported to the dry cooler 03000 through the refrigerant inlet. The refrigerant exchanges heat with the outside air in the dry cooler 03000 to cool down, and the cooled refrigerant is output from the refrigerant outlet.

[0099] In one embodiment, there are various specific structural forms for the first hot side, which are illustrated below.

[0100] like Figure 2 As shown, the first cold side is a first cold side heat exchange channel 12101, and the first hot side is a hot side heat exchange container 12103. The first cold side heat exchange channel 12101 is disposed on the hot side heat exchange container 12103, and the first cold side heat exchange channel 12101 and the hot side heat exchange container 12103 exchange heat with each other.

[0101] Specifically, the first hot side uses a hot-side heat exchange container 12103 to store the medium to be cooled. The medium to be cooled in the hot-side heat exchange container 12103 can exchange heat with the refrigerant transported in the first cold-side heat exchange channel 12101, so as to cool the medium to be cooled in the first cooling device 121 by means of the refrigerant.

[0102] like Figure 2 As shown, taking the first cooling device 121 as an example of a fermentation tank group for beer production, the fermentation tank group typically includes multiple fermentation tanks, and each fermentation tank is equipped with a cold-side heat exchange channel. The fermentation tank is a hot-side heat exchange container 12103, and the cold-side heat exchange channel on the fermentation tank is the first cold-side heat exchange channel 12101.

[0103] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is supplied to the first cold-side heat exchange channel 12101 of the fermentation tank in the early stage of fermentation for cooling.

[0104] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is delivered to the first cold-side heat exchange channel 12101 of the fermenter in the later stage of fermentation, where the fermentation broth in the fermenter exchanges heat with the refrigerant in the first cold-side heat exchange channel 12101. When a refrigerant tank 038 is provided, the refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is delivered to the first cold-side heat exchange channel 12101 of the fermenter in the later stage of fermentation.

[0105] like Figure 3 As shown, the first hot side includes at least two hot side heat exchange containers 12103 and at least one first hot side heat exchange channel 12102. The two hot side heat exchange containers are connected through the first hot side heat exchange channel. The first cold side heat exchange channel includes a first cold side heat exchange channel 12101-1 and a second cold side heat exchange channel 12101-2. The first cold side heat exchange channel 12101-1 is disposed on the hot side heat exchange container 12103. The first cold side heat exchange channel 12101-1 exchanges heat with the hot side heat exchange container 12103. The first cold side heat exchange channel 12101-2 exchanges heat with the first hot side heat exchange channel 12102.

[0106] Specifically, the first hot side includes a hot-side heat exchange container 12103 and a first hot-side heat exchange channel 12102. The two hot-side heat exchange containers 12103 are connected via the first hot-side heat exchange channel 12102. During the process of the medium to be cooled in one hot-side heat exchange container 12103 being driven by a pump through the first hot-side heat exchange channel 12102 into the other hot-side heat exchange container 12103, the medium to be cooled flowing through the first hot-side heat exchange channel 12102 and the refrigerant in the second first cold-side heat exchange channel 12101-2 exchange heat with each other. The refrigerant in the first cold-side heat exchange channel 12101-1 exchanges heat with the medium to be cooled in the hot-side heat exchange container 12103.

[0107] like Figure 3 As shown, taking the first cooling device 121 as an example of a fermentation tank group, the fermentation tank group includes multiple fermentation tanks and at least one external cooling module for fermentation liquid. The fermentation tanks are provided with cold-side heat exchange channels. The fermentation tank is a hot-side heat exchange container 12103, and the cold-side heat exchange channel on the fermentation tank is the first cold-side heat exchange channel 12101-1. The external cooling module for fermentation liquid is provided with a first cold-side heat exchange channel 12101-2 and a first hot-side heat exchange channel 12102 that exchange heat with each other. The external cooling module for fermentation liquid can be a plate heat exchanger.

[0108] The beer fermentation process can be roughly divided into a pre-fermentation process and a post-fermentation process, each of which involves different processing of the fermentation liquid. After the pre-fermentation process is completed, the temperature of the fermentation liquid is quickly reduced by an external cooling module to meet the temperature requirements of the post-fermentation process. Both the pre-fermentation and post-fermentation processes are carried out in a fermentation tank. During the pre-fermentation process, the fermentation liquid in the fermentation tank exchanges heat with the cold side heat exchange channel on the fermentation tank until the pre-fermentation process is completed.

[0109] The refrigerant redistribution device 130 outputs refrigerant from the first refrigerant outlet 13010 and inputs it into the first cold-side heat exchange channel 12101-1. The fermentation liquid in the fermentation tank of the early stage of fermentation exchanges heat with the refrigerant in the first cold-side heat exchange channel 12101-1 to control the temperature of the fermentation liquid in the fermentation tank of the early stage of fermentation.

[0110] After the initial fermentation is completed, the fermentation liquid in the fermenter can be cooled down in the fermenter first. The cooled fermentation liquid is then output from the fermenter and pumped to the external cooling module for further cooling. Alternatively, the fermentation liquid in the fermenter after the initial fermentation is completed can be pumped directly to the external cooling module for further cooling without cooling in the fermenter.

[0111] For example, after the initial fermentation is complete, the cold-side heat exchange channel of the fermenter receives refrigerant from the refrigerant outlet 0301 of the refrigeration unit and / or refrigerant from the first refrigerant inlet / outlet 0381. The fermentation liquid at 13°C in the fermenter exchanges heat with the refrigerant in the cold-side heat exchange channel. After the fermentation liquid in the fermenter cools down from 13°C to 7°C, the cooled fermentation liquid output from the fermenter is pumped to the first hot-side heat exchange channel 12102 of the external cooling module for fermentation liquid. Alternatively, the 13°C fermentation liquid output from the fermenter after the initial fermentation is complete is pumped to the first hot-side heat exchange channel 12102 of the external cooling module for fermentation liquid. The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the refrigerant from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is transported to the first cold-side heat exchange channel 12101-2 of the external cooling module for fermentation liquid. The fermentation broth and the coolant exchange heat in the external cooling module of the fermentation broth to cool it down. The cooled fermentation broth output from the first heat-side heat exchange channel 12102 is then transported to the fermenter for further fermentation processing. The refrigerant output from the refrigerant outlet of the refrigeration unit 0301 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 are transported to the first cold-side heat exchange channel 12101-1 on the fermenter of the later stage of fermentation to keep the fermentation liquid in the fermenter of the later stage of fermentation cold.

[0112] The second cooling device 122 is a plate heat exchanger. The refrigerant output from the first cold side heat exchange channel 12101-1 on the fermenter and the first cold side heat exchange channel 12101-2 of the external cooling module for fermentation liquid is delivered to the second cold side heat exchange channel of the second cooling device 122 to cool the medium delivered to the second hot side heat exchange channel of the second cooling device 122.

[0113] like Figure 4 As shown, the first hot side includes a storage container 12104 and a first hot side heat exchange channel 12102. The inlet and outlet of the first hot side heat exchange channel 12102 are connected to the storage container 12104, and the first cold side heat exchange channel 12101 and the first hot side heat exchange channel 12102 exchange heat with each other.

[0114] Specifically, the first hot side includes a storage container 12104 and a first hot side heat exchange channel 12102. The inlet and outlet of the first hot side heat exchange channel 12102 are connected to the inlet and outlet of the storage container 12104 respectively. The medium to be cooled in the storage container 12104 is driven by a pump to circulate between the storage container 12104 and the first hot side heat exchange channel 12102. The refrigerant in the first cold side heat exchange channel 12101 exchanges heat with the medium to be cooled flowing in the first hot side heat exchange channel 12102.

[0115] like Figure 4 As shown, taking the first cooling device 121 as an example of a fermentation tank group, the fermentation tank group includes multiple fermentation tanks and multiple external cooling modules for fermentation liquid. The inlet and outlet of each fermentation tank are connected to the inlet and outlet of the corresponding external cooling module for fermentation liquid through a pump.

[0116] The fermenter is a storage container 12104. The external cooling module for the fermentation liquid is provided with a first cold-side heat exchange channel 12101 and a first hot-side heat exchange channel 12102 for mutual heat exchange. The external cooling module for the fermentation liquid can be a plate heat exchanger. The fermentation liquid at the outlet of the storage container 12104 is cooled by the first hot-side heat exchange channel 12102 and then circulated to the inlet of the storage container 12104.

[0117] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is input into the first cold-side heat exchange channel 12101 of the external cooling module for the fermentation liquid in the early stage of fermentation. The fermentation liquid in the fermentation tank in the early stage of fermentation is circulated to the first hot-side heat exchange channel 12102 of the corresponding external cooling module for fermentation liquid by a pump. The fermentation liquid in the first hot-side heat exchange channel 12102 of the external cooling module for fermentation liquid exchanges heat with the refrigerant in the first cold-side heat exchange channel 12101 to cool and control the temperature of the fermentation liquid in the fermentation tank in the early stage of fermentation.

[0118] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 are delivered to the cold-side heat exchange channel of the external cooling module for the fermentation liquid corresponding to the later fermentation tank. In the external cooling module for the fermentation liquid of the later fermentation, the fermentation liquid in the hot-side heat exchange channel exchanges heat with the refrigerant in the cold-side heat exchange channel to circulate and cool the fermentation liquid in the fermentation tank of the later fermentation.

[0119] like Figure 4 As shown, compared to Figure 2 The intermediate fermentation tank itself is equipped with a cold-side heat exchange channel. Figure 2 During the cooling phase after fermentation in the fermenter, the lack of CO2 agitation causes the convection intensity of the fermentation broth to gradually decrease. The refrigerant in the cold-side heat exchange channel of the fermenter can only cool the fermentation broth through heat conduction, resulting in a significant temperature gradient from the tank wall to the center. Figure 4 The fermentation broth in the fermenter is circulated by a pump to the hot-side heat exchange channel of the external cooling module for cooling. This external cooling module ensures more uniform cooling of the fermentation broth, allowing for more thorough and precise execution of different stages of the fermentation process. In terms of energy efficiency, because... Figure 4 The external cooling module for the fermentation liquid uses a plate heat exchanger compared to Figure 2 The jacket of the fermenter has a cold-side heat exchange channel with better cooling efficiency and higher utilization efficiency of the refrigerant.

[0120] In one embodiment, such as Figure 5 As shown, the second cold side is a second cold side heat exchange channel 12201, and the second hot side is a second hot side heat exchange channel 12202. The second cold side heat exchange channel and the second hot side heat exchange channel exchange heat with each other.

[0121] Specifically, the second cooling device 122 is a plate heat exchanger. The refrigerant output from the first cold-side heat exchange channel 12101 enters the second cold-side heat exchange channel of the second cooling device 122 to cool the medium transported in the second hot-side heat exchange channel of the second cooling device 122.

[0122] In one embodiment, such as Figure 2 As shown, the first cooling device 121 includes a plurality of first cold sides and a plurality of first hot sides, and the first cold sides exchange heat with the corresponding first hot sides; the refrigerant output from one of the first cold sides is transported to another first cold side via the refrigerant redistribution device 130.

[0123] Specifically, taking the first cooling device 121 as an example of a fermentation tank group, the fermentation tank group includes multiple fermentation tanks, and each fermentation tank is equipped with a cold-side heat exchange channel. In the same fermentation tank group, the cold-side heat exchange channel on each fermentation tank is a first cold-side section of the first cooling device 121.

[0124] The refrigerant output from the cold-side heat exchange channel on the fermenter in the later stage of fermentation is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. The refrigerant output from the refrigerant redistribution device 130 via the first refrigerant outlet 13010 is then input into the cold-side heat exchange channel on the fermenter in the early stage of fermentation.

[0125] In one embodiment, such as Figure 5 As shown, the cooling unit includes a plurality of first cooling devices 121, wherein the refrigerant output from the first cold side of one of the first cooling devices 121 is transported to another first cold side via the refrigerant redistribution device 130.

[0126] Specifically, taking multiple first cooling devices 121, including fermentation tank groups and pre-filter quenching equipment, as an example, the refrigerant output from the cold side heat exchange channel of the pre-filter quenching equipment is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. The refrigerant redistribution device 130 outputs the refrigerant through the first refrigerant outlet 13010 and inputs it into the cold side heat exchange channel on the fermentation tank in the early stage of fermentation in the fermentation tank group.

[0127] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed in this application.

Claims

1. A refrigerant reuse refrigeration and cooling system, characterized in that, include: The refrigeration unit is provided with a refrigerant outlet and a refrigerant return port. The refrigeration unit is configured to refrigerate the refrigerant input at the refrigerant return port of the refrigeration unit and output the refrigerated refrigerant from the refrigerant outlet of the refrigeration unit. The cooling unit includes a first cooling device, which includes a first cold side and a first hot side that exchange heat with each other. A refrigerant redistribution device is provided with a first refrigerant inlet, a first refrigerant outlet, and a refrigerant reuse pump; the refrigerant redistribution device is configured to adjust the flow rate of refrigerant delivered from the first refrigerant inlet to the first refrigerant outlet; the outlet of the refrigerant reuse pump is connected to the first refrigerant outlet; The refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side of the first refrigeration equipment, and the outlet of the first cold side of the first refrigeration equipment is connected to the refrigerant return port of the refrigeration unit. The outlet of the first cold side of the first cooling equipment is also connected to the first refrigerant inlet, and the first refrigerant outlet is connected to the inlet of the first cold side of the first cooling equipment. A refrigerant delivery pump is also provided between the refrigerant outlet of the refrigeration unit and the inlet of the first cold side section.

2. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, The refrigerant redispensing device is equipped with a second refrigerant inlet; The refrigerant redistribution device is also configured to adjust the refrigerant flow rate from the second refrigerant inlet to the first refrigerant outlet; The second refrigerant inlet is connected to the inlet of the refrigerant pump via a second refrigerant recovery control valve; The refrigerant outlet of the refrigeration unit is also connected to the second refrigerant inlet.

3. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, The refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side section through a first refrigerant control valve. The first refrigerant outlet is connected to the inlet of the first cold side via a second refrigerant control valve.

4. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, It also includes a refrigerant tank, which is provided with a first refrigerant inlet and outlet. The first refrigerant inlet and outlet is connected to the refrigerant outlet of the refrigeration unit, and the first refrigerant inlet and outlet is also connected to the inlet of the first cold side.

5. The refrigerant reuse refrigeration and cooling system according to claim 4, characterized in that, The refrigerant tank is provided with a second refrigerant inlet and outlet, and the temperature of the refrigerant entering and exiting the second refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting the first refrigerant inlet and outlet. The second refrigerant inlet and outlet are connected to the outlet of the first cold side of the first refrigeration equipment, and the second refrigerant inlet and outlet are connected to the refrigerant return port of the refrigeration unit.

6. The refrigerant reuse refrigeration and cooling system according to claim 5, characterized in that, The refrigerant redispensing device is equipped with a second refrigerant inlet; The refrigerant redistribution device is also configured to adjust the refrigerant flow rate from the second refrigerant inlet to the first refrigerant outlet; The second refrigerant inlet is connected to the inlet of the refrigerant pump via a second refrigerant recovery control valve; The refrigerant outlet of the refrigeration unit is also connected to the second refrigerant inlet, and the first refrigerant inlet and outlet are also connected to the second refrigerant inlet.

7. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, The refrigeration unit includes a condenser, a liquid receiver, and a refrigeration unit; The refrigeration unit includes a refrigeration compressor unit and an evaporator. The evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the evaporator is connected to the suction port of the refrigeration compressor unit. The exhaust port of the refrigeration compressor unit is connected to the hot-side air inlet of the condenser, the hot-side liquid outlet of the condenser is connected to the liquid inlet of the liquid receiver, and the liquid outlet of the liquid receiver is connected to the inlet of the cold-side heat exchange channel of the evaporator. The outlet of the hot-side heat exchange channel of the evaporator is configured as the refrigerant outlet of the refrigeration unit, and the inlet of the hot-side heat exchange channel of the evaporator is configured as the refrigerant return port of the refrigeration unit.

8. The refrigerant reuse refrigeration and cooling system according to claim 6, characterized in that, It also includes a second refrigeration unit; The second refrigeration device includes a second cold side and a second hot side that exchange heat with each other; The refrigerant return port of the refrigeration unit includes a refrigerant return port one and a refrigerant return port two. The temperature of the refrigerant input to the refrigerant return port two is lower than the temperature of the refrigerant input to the refrigerant return port one. The refrigerant tank is provided with a third refrigerant inlet and outlet, and the temperature of the refrigerant entering and exiting the third refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting the second refrigerant inlet and outlet. The outlet of the second cold side of the second refrigeration equipment is connected to the third refrigerant inlet and outlet. The outlet of the second cold side of the second refrigeration equipment is also connected to the refrigerant return port of the refrigeration unit. The third refrigerant inlet and outlet are also connected to the refrigerant return port of the refrigeration unit. The outlet of the first cold side of the first refrigeration equipment is also connected to the refrigerant return port two of the refrigeration unit, and the inlet and outlet of the second refrigerant are also connected to the refrigerant return port two of the refrigeration unit; The first refrigerant outlet is also connected to the inlet of the second cold side of the second refrigeration equipment.

9. The refrigerant reuse refrigeration and cooling system according to claim 8, characterized in that, The refrigeration unit includes a condenser, a liquid receiver, and multiple refrigeration units; The hot-side liquid outlet of the condenser is connected to the liquid inlet of the liquid reservoir; The plurality of refrigeration units include a first refrigeration unit and a second refrigeration unit; The first refrigeration unit includes a first refrigeration compressor unit and a first evaporator. The first evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the first evaporator is connected to the suction port of the first refrigeration compressor unit. The exhaust port of the first refrigeration compressor unit is connected to the hot-side air inlet of the condenser. The inlet of the cold-side heat exchange channel of the first evaporator is connected to the liquid outlet of the liquid receiver. The second refrigeration unit includes a second refrigeration compressor unit and a second evaporator. The second evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the second evaporator is connected to the suction port of the second refrigeration compressor unit. The exhaust port of the second refrigeration compressor unit is connected to the hot-side air inlet of the condenser. The inlet of the cold-side heat exchange channel of the second evaporator is connected to the liquid outlet of the liquid receiver. The suction pressure of the first refrigeration compressor unit is higher than that of the second refrigeration compressor unit; The outlet of the hot-side heat exchange channel of the second evaporator is configured as the refrigerant outlet of the refrigeration unit, the inlet of the hot-side heat exchange channel of the first evaporator is configured as the refrigerant return port of the refrigeration unit, and the inlet of the hot-side heat exchange channel of the second evaporator is configured as the refrigerant return port of the refrigeration unit. The inlet of the hot-side heat exchange channel of the first evaporator is connected to the third refrigerant inlet / outlet and the outlet of the second cold side via the first pump, and the outlet of the hot-side heat exchange channel of the first evaporator is connected to the second refrigerant inlet / outlet. The inlet of the hot-side heat exchange channel of the second evaporator is connected to the outlet of the hot-side heat exchange channel of the first evaporator, the second refrigerant inlet and outlet, and the outlet of the first cold-side section via a second pump. The outlet of the hot-side heat exchange channel of the second evaporator is connected to the first refrigerant inlet and outlet and the inlet of the first cold-side section.

10. The refrigerant reuse refrigeration and cooling system according to claim 9, characterized in that, The plurality of refrigeration units also include a third refrigeration unit; The third refrigeration unit includes a third refrigeration compressor unit and a third evaporator. The third evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the third evaporator is connected to the suction port of the third refrigeration compressor unit. The exhaust port of the third refrigeration compressor unit is connected to the hot-side air inlet of the condenser. The inlet of the cold-side heat exchange channel of the third evaporator is connected to the liquid outlet of the liquid receiver. The suction pressure of the first refrigeration compressor unit is higher than that of the third refrigeration compressor unit, and the suction pressure of the third refrigeration compressor unit is higher than that of the second refrigeration compressor unit. The outlet of the hot-side heat exchange channel of the first evaporator is connected to the inlet and outlet of the second refrigerant through the hot-side heat exchange channel of the third evaporator, and the inlet of the hot-side heat exchange channel of the second evaporator is connected to the outlet of the hot-side heat exchange channel of the first evaporator in sequence through the second pump and the hot-side heat exchange channel of the third evaporator.

11. The refrigerant reuse refrigeration and cooling system according to any one of claims 10, characterized in that, The first cold side is a first cold side heat exchange channel, the first hot side is a hot side heat exchange container, the first cold side heat exchange channel is disposed on the hot side heat exchange container, and the first cold side heat exchange channel and the hot side heat exchange container exchange heat with each other. Alternatively, the first hot side portion includes a plurality of hot side heat exchange containers and at least one first hot side heat exchange channel. Two hot side heat exchange containers connected together are connected through the first hot side heat exchange channel. The first cold side heat exchange channel includes a first cold side heat exchange channel one and a first cold side heat exchange channel two. The first cold side heat exchange channel one is disposed on the hot side heat exchange container. The first cold side heat exchange channel one exchanges heat with the hot side heat exchange container. The first cold side heat exchange channel two exchanges heat with the first hot side heat exchange channel. Alternatively, the first hot side includes a storage container and a first hot side heat exchange channel, the inlet and outlet of the first hot side heat exchange channel being connected to the storage container, and the first cold side heat exchange channel exchanging heat with the first hot side heat exchange channel.

12. The refrigerant reuse refrigeration and cooling system according to any one of claims 10, characterized in that, The first cooling device includes a plurality of first cold side sections and a plurality of first hot side sections, wherein the first cold side sections exchange heat with the corresponding first hot side sections; the refrigerant output from one of the first cold side sections is transported to another first cold side section via the refrigerant redispensing device. Alternatively, the cooling unit may include a plurality of the first cooling devices, wherein the refrigerant output from the first cold side of one of the first cooling devices is delivered to another first cold side via the refrigerant redistribution device.

13. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, The refrigeration unit includes at least one refrigeration unit; The refrigeration unit includes a refrigeration compressor unit, an evaporator and a condenser. The evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the evaporator is connected to the suction port of the refrigeration compressor unit. The exhaust port of the refrigeration compressor unit is connected to the hot-side air inlet of the condenser, and the hot-side liquid outlet of the condenser is connected to the inlet of the cold-side heat exchange channel of the evaporator. The outlet of the hot-side heat exchange channel of the evaporator is configured as the refrigerant outlet of the refrigeration unit, and the inlet of the hot-side heat exchange channel of the evaporator is configured as the refrigerant return port of the refrigeration unit.

14. The refrigerant reuse refrigeration and cooling system according to claim 8, characterized in that, It also includes a refrigerant tank, which is provided with a first refrigerant inlet and outlet, a second refrigerant inlet and outlet, and a third refrigerant inlet and outlet; the temperature of the refrigerant entering and exiting the third refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting the second refrigerant inlet and outlet, and the temperature of the refrigerant entering and exiting the second refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting the first refrigerant inlet and outlet. The refrigeration unit includes a plurality of refrigeration units, and the plurality of refrigeration units include a first refrigeration unit and a second refrigeration unit; The first refrigeration unit includes a first refrigeration compressor unit, a first evaporator, and a first condenser. The first evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The first condenser is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the first evaporator is connected to the suction port of the first refrigeration compressor unit. The exhaust port of the first refrigeration compressor unit is connected to the hot-side air inlet of the hot-side heat exchange channel of the first condenser. The inlet of the cold-side heat exchange channel of the first evaporator is connected to the liquid outlet of the hot-side heat exchange channel of the first condenser. The second refrigeration unit includes a second refrigeration compressor unit, a second evaporator, and a second condenser. The second evaporator is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The second condenser is provided with a cold-side heat exchange channel and a hot-side heat exchange channel for mutual heat exchange. The outlet of the cold-side heat exchange channel of the second evaporator is connected to the suction port of the second refrigeration compressor unit. The discharge port of the second refrigeration compressor unit is connected to the hot-side inlet of the hot-side heat exchange channel of the second condenser. The inlet of the cold-side heat exchange channel of the second evaporator is connected to the liquid outlet of the hot-side heat exchange channel of the second condenser. The suction pressure of the first refrigeration compressor unit is higher than that of the second refrigeration compressor unit; The outlet of the hot-side heat exchange channel of the second evaporator is configured as the refrigerant outlet of the refrigeration unit, the inlet of the hot-side heat exchange channel of the first evaporator is configured as the refrigerant return port of the refrigeration unit, and the inlet of the hot-side heat exchange channel of the second evaporator is configured as the refrigerant return port of the refrigeration unit. The inlet of the hot-side heat exchange channel of the first evaporator is connected to the third refrigerant inlet / outlet and the outlet of the second cold side via the first pump, and the outlet of the hot-side heat exchange channel of the first evaporator is connected to the second refrigerant inlet / outlet. The inlet of the hot-side heat exchange channel of the second evaporator is connected to the outlet of the hot-side heat exchange channel of the first evaporator, the second refrigerant inlet / outlet, and the outlet of the first cold-side section via a second pump. The outlet of the hot-side heat exchange channel of the second evaporator is connected to the first refrigerant inlet / outlet and the inlet of the first cold-side section.

15. The refrigerant reuse refrigeration and cooling system according to claim 14, characterized in that, The refrigeration unit also includes a first dry cooler and a second dry cooler; The first dry cooler is provided with a first refrigerant inlet and a first refrigerant outlet. The first dry cooler is configured to cool the refrigerant input into the first refrigerant inlet and output the cooled refrigerant from the first refrigerant outlet. The first refrigerant inlet and the first refrigerant outlet are respectively connected to the connecting pipe between the inlet of the heat exchange channel on the hot side of the first evaporator and the first pump. The second dry cooler is provided with a second refrigerant inlet and a second refrigerant outlet. The second dry cooler is configured to cool the refrigerant input into the second refrigerant inlet and output the cooled refrigerant from the second refrigerant outlet. The second refrigerant inlet and the second refrigerant outlet are respectively connected to the connecting pipe between the inlet of the hot-side heat exchange channel of the second evaporator and the second pump.

16. The refrigerant reuse refrigeration and cooling system according to claim 1, characterized in that, The refrigeration unit includes at least one dry cooler, which is provided with a refrigerant inlet and a refrigerant outlet. The dry cooler is configured to cool the refrigerant input through the refrigerant inlet and output the cooled refrigerant through the refrigerant outlet. The refrigerant outlet is configured as refrigerant outlet one of the refrigeration unit, and the refrigerant inlet is configured as refrigerant return port one of the refrigeration unit.

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