Refrigerant complexing refrigeration cooling system for beer production

Abstract

This invention provides a refrigerant reuse refrigeration and cooling system for beer production, comprising: a refrigeration unit, which has a refrigerant outlet and a refrigerant return port; the refrigeration unit is configured to refrigerate the refrigerant input to the refrigerant return port and output the refrigerated refrigerant from the refrigerant outlet; and a cooling unit, which includes a first cooling device and a second cooling device; the first cooling device includes a first cold side and a first hot side that exchange heat with each other; the second cooling device includes a second cold side and a second hot side that exchange heat with each other; the outlet of the first cold side is connected to the inlet of the second cold side; the refrigerant outlet is connected to the inlet of the first cold side, and the outlet of the second cold side is connected to the refrigerant return port. This system improves the refrigerant utilization efficiency in the refrigeration and cooling system, thereby reducing the power consumption of the refrigeration 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 for beer production. Background Technology

[0002] Currently, beer production requires a low-temperature production environment provided by a refrigeration system. In many cases, the low-temperature refrigerant output from the refrigeration system is input into the cooling equipment, where it exchanges heat with the input medium to be cooled. The refrigerant output from the refrigeration system is then transported to different cooling equipment for heat exchange, and these different cooling equipment then return the refrigerant to the refrigeration system for further cooling. During production, different cooling equipment has different cooling requirements. For example, the pre-filtration quenching equipment requires a refrigerant at approximately -4 degrees Celsius for heat exchange, while the deoxygenated water cooling module uses a refrigerant at approximately 0 degrees Celsius. Existing technologies typically configure corresponding refrigeration systems for different cooling equipment to meet their cooling requirements, resulting in high overall power consumption. Furthermore, due to significant temperature differences between the input and output refrigerants during the cooling process, refrigeration systems with small temperature differences have low cooling efficiency. Therefore, the technical problem this invention aims to solve is how to design a technology to improve refrigerant utilization efficiency and reduce power consumption in the refrigeration system. Summary of the Invention

[0003] This application provides a refrigerant reuse refrigeration and cooling system for beer production, which improves the efficiency of refrigerant use in the refrigeration and cooling system and reduces the power consumption of the refrigeration system.

[0004] One embodiment of this application provides a refrigerant reuse refrigeration and cooling system for beer production, comprising: 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 and a second cooling device; The first refrigeration device includes a first cold side and a first hot side that exchange heat with each other; The second refrigeration device includes a second cold side and a second hot side that exchange heat with each other; The temperature of the refrigerant input at the inlet of the first cold side is lower than the temperature of the refrigerant input at the inlet of the second cold side, and the temperature of the refrigerant output at the outlet of the first cold side is lower than the temperature of the refrigerant output at the outlet of the second cold side. The outlet of the first cold side is connected to the inlet of the second cold side; The refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side, the outlet of the second cold side is connected to the refrigerant return port of the refrigeration unit, and a refrigerant delivery pump is also provided between the refrigerant outlet of the refrigeration unit and the inlet of the first cold side.

[0005] The beneficial effects compared with the prior art include at least the following: the refrigerant after cooling output from the refrigeration unit is transported to the first cooling device of the cooling unit for cooling treatment; the second cooling device of the cooling unit uses the refrigerant output from the first cooling device to provide cooling capacity instead of directly using the refrigerant from the refrigeration unit, thus making full use of the cooling capacity of the refrigerant and improving the utilization rate of the refrigerant; furthermore, the refrigerant output from the second cooling device is transported back to the refrigeration unit, which increases the temperature difference between the refrigerant outlet and the refrigerant return port of the refrigeration unit, thereby increasing the heat exchange capacity per unit of refrigerant.

[0006] Furthermore, it saves on investment by eliminating the need for cooling pipes and pumps between the refrigeration unit and the second cooling equipment, which helps reduce construction investment costs and saves on electricity and maintenance costs during normal operation. Attached Figure Description

[0007] 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.

[0008] Figure 1 This is one of the schematic diagrams of an embodiment of a refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 2 This is a second schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 3 This is the third schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 4 This is the fourth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 5 This is the fifth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 6 This is the sixth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 7This is the seventh schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 8 This is the eighth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 9 This is the ninth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 10 This is the tenth schematic diagram of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application; Figure 11 One of the schematic diagrams for another embodiment of the cooling unit; Figure 12 One of the schematic diagrams for another embodiment of the cooling unit; Figure 13 This is schematic diagram eleven of an embodiment of the refrigerant reuse refrigeration and cooling system for beer production according to this application. Detailed Implementation

[0009] 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.

[0010] like Figure 1 As shown, one embodiment of this application provides a refrigerant reuse refrigeration and cooling system for beer production, comprising: The refrigeration unit 030 is provided with a refrigerant outlet 0301 and a refrigerant return port 0302. The refrigeration unit 030 is configured to perform refrigeration treatment on the refrigerant input into the refrigerant return port 0302 and output the refrigerated refrigerant from the refrigerant outlet 0301. Cooling unit 120, which includes a first cooling device 121 and a second cooling device 122; The first cooling device 121 includes a first cold side and a first hot side that exchange heat with each other; The second cooling device 122 includes a second cold side and a second hot side that exchange heat with each other; The temperature of the refrigerant input to the inlet 1211 of the first cold side is lower than the temperature of the refrigerant input to the inlet 1221 of the second cold side, and the temperature of the refrigerant output from the outlet 1212 of the first cold side is lower than the temperature of the refrigerant output from the outlet 1222 of the second cold side. The outlet 1212 of the first cold side is connected to the inlet 1221 of the second cold side; The refrigerant outlet 0301 of the refrigeration unit is connected to the inlet 1211 of the first cold side, and the outlet 1222 of the second cold side is connected to the refrigerant return port 0302 of the refrigeration unit. 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.

[0011] Specifically, the cooling unit 120 includes at least one first cooling device 121 and at least one second cooling device 122, with the outlet 1212 of the first cold side of the first cooling device 121 connected to the inlet 1221 of the second cold side of the second cooling device 122.

[0012] The refrigeration unit 030 cools the refrigerant input through the refrigerant return port 0302. The cooled refrigerant is then pumped via a refrigerant transfer pump to the first cooling device 121 through inlet 1211 on the first cold side, where it flows and exchanges heat. The medium to be cooled, pumped through inlet 1213 on the first hot side, exchanges heat with the refrigerant in the first cold side and is output from outlet 1214 on the first hot side. After heat exchange, the refrigerant in the first cold side is output from outlet 1212. The refrigerant output from outlet 1212 is then pumped through inlet 1221 on the second cold side to the second cooling device 122, where it flows and exchanges heat. The medium to be cooled, pumped through inlet 1223 on the second hot side, exchanges heat with the refrigerant in the second cold side and is output from outlet 1224 on the second hot side.

[0013] like Figure 1 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 a deoxygenated water cooling module, which will be used as an example for explanation.

[0014] The first cooling device 121 is a pre-filtration quenching unit, with the fermentation broth as the medium to be cooled. The refrigerant in the pre-filtration quenching unit is 30% propylene glycol to cool the fermentation broth before filtration. The second cooling device 122 is a deoxygenated water cooling module, with deoxygenated water as the medium to be cooled. The refrigerant in the deoxygenated water cooling module is 30% propylene glycol to cool the deoxygenated water. Both the pre-filtration quenching unit and the deoxygenated water cooling module can use conventional plate heat exchangers.

[0015] The -4°C refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is fed into the first cold side of the pre-filter quenching device via inlet 1211 of the first cold side. The fermentation broth is transported to the first hot side of the pre-filter quenching device via inlet 1213 of the first hot side. The refrigerant and fermentation broth exchange heat in the pre-filter quenching device. Taking the -4°C refrigerant being transported to the first cold side of the pre-filter quenching device and the 3°C fermentation broth being transported to the first hot side of the pre-filter quenching device as an example, the refrigerant output from outlet 1212 of the first cold side is 0°C, and the fermentation broth output from outlet 1214 of the first hot side is -1°C, which is then transported to the beer filter for filtration.

[0016] The 0°C refrigerant output from outlet 1212 of the first cold side is transported to the second cold side of the deoxygenated water cooling module via inlet 1221 of the second cold side. The deoxygenated water is transported to the second hot side of the deoxygenated water cooling module via inlet 1223 of the second hot side. Heat exchange occurs between the refrigerant and deoxygenated water in the deoxygenated water cooling module. Taking 14°C deoxygenated water as an example, after heat exchange, the refrigerant temperature rises to 10.99°C and is returned to the refrigeration unit 030 via refrigerant return port 0302. The 14°C deoxygenated water is cooled to 3°C and output through outlet 1224 of the second hot side for subsequent process use.

[0017] In one embodiment, such as Figure 2 As shown, the first cold side is the first cold side heat exchange channel 12101; 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. The outlet of the first cold-side heat exchange channel 12101 is connected to the inlet of the second cold-side heat exchange channel 12201.

[0018] Specifically, the first cold side section uses the first cold side heat exchange channel 12101 to transport the refrigerant. The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is transported to the first cold side heat exchange channel 12101 by the refrigerant transfer pump, and the refrigerant and the medium to be cooled are exchanged in the first cooling equipment 121.

[0019] The refrigerant output from the first cold-side heat exchange channel 12101 is transported to the second cold-side heat exchange channel 12201, while the medium to be cooled is transported to the second hot-side heat exchange channel 12202. Heat exchange between the refrigerant and the medium to be cooled is achieved in the second cooling device 122. The second cooling device 122 can be an ice water cooling module or a deoxygenated water cooling module in a beer production system. The ice water cooling module is used to cool the water transported by the water supply pipe, and the deoxygenated water cooling module is used to cool the deoxygenated water. Both the ice water cooling module and the deoxygenated water cooling module can be plate heat exchangers.

[0020] In one embodiment, there are various specific structural forms for the first hot side, which are illustrated below.

[0021] like Figure 7 As shown, the first hot side is a first hot side heat exchange channel 12102, and the first cold side heat exchange channel 12101 and the first hot side heat exchange channel 12102 exchange heat with each other.

[0022] Specifically, the first hot side uses a first hot side heat exchange channel 12102 to supply the medium to be cooled on the hot side. The medium to be cooled input into the inlet of the first hot side heat exchange channel 12102 can exchange heat with the refrigerant transported by the first cold side heat exchange channel 12101, so as to cool the medium to be cooled in the first cooling equipment 121 by means of the refrigerant.

[0023] like Figure 7 As shown, taking the first cooling device 121 as an example of a pre-filtration quenching device, the pre-filtration quenching device is equipped with a first cold-side heat exchange channel 12101 and a first hot-side heat exchange channel 12102. The refrigerant is output from the refrigerant outlet 0301 of the refrigeration unit 030 and transported to the first cold-side heat exchange channel 12101. The fermentation liquid is transported to the first hot-side heat exchange channel 12102. The refrigerant and the fermentation liquid exchange heat in the pre-filtration quenching device. The fermentation liquid output from the pre-filtration quenching device is transported to the filter for filtration treatment.

[0024] like Figure 7 As shown, the first hot side is a hot side heat exchange container 12103, and the first cold side heat exchange channel 12101 is disposed on the hot side heat exchange container 12103. The first cold side heat exchange channel 12101 and the hot side heat exchange container 12103 exchange heat with each other.

[0025] 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.

[0026] like Figure 7As 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.

[0027] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is delivered to the first cold-side heat exchange channel 12101, and the fermentation liquid in the fermentation tank exchanges heat with the refrigerant in the first cold-side heat exchange channel 12101.

[0028] 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.

[0029] like Figure 8 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 12103 are connected through the first hot side heat exchange channel 12102. The first cold side heat exchange channel 12102 includes a first cold side heat exchange channel 12101-1 and a first 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.

[0030] 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.

[0031] like Figure 8As 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.

[0032] 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.

[0033] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is input 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.

[0034] 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.

[0035] 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. 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 is pumped 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 exchange channel 12102 is transported to the fermenter for subsequent fermentation process.

[0036] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit is delivered 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.

[0037] 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.

[0038] like Figure 9 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. The first cold side heat exchange channel 12101 and the first hot side heat exchange channel 12102 exchange heat with each other.

[0039] 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.

[0040] like Figure 9 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 interconnected with the inlet and outlet of the corresponding external cooling module for fermentation liquid via pumps. The fermentation tank is a storage container 12104. The external cooling module for 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 fermentation liquid can be a plate heat exchanger. The fermentation liquid output from the outlet of the storage container 12104 is cooled by the first hot-side heat exchange channel 12102 and then circulated back to the inlet of the storage container 12104.

[0041] 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 external cooling module of the fermentation liquid. In the external cooling module of the fermentation liquid, the fermentation liquid and the refrigerant exchange heat to circulate and cool the fermentation liquid.

[0042] like Figure 9 As shown, compared to Figure 7 The intermediate fermentation tank itself is equipped with a cold-side heat exchange channel. Figure 7 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 9 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 9 The external cooling module for the fermentation liquid uses a plate heat exchanger compared to Figure 7 The jacket of the fermenter has a cold-side heat exchange channel with better cooling efficiency and higher utilization efficiency of the refrigerant.

[0043] 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.

[0044] In one embodiment, such as Figure 3 As shown, the refrigerant reuse refrigeration and cooling system for beer production also includes a refrigerant tank 038. The refrigerant tank 038 is provided with a first refrigerant inlet and outlet 0381. The first refrigerant inlet and outlet 0381 is connected to the refrigerant outlet 0301 of the refrigeration unit. The first refrigerant inlet and outlet 0381 is also connected to the inlet 1211 of the first cold side.

[0045] 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.

[0046] The refrigerant discharged from the refrigerant tank 038 through the first refrigerant inlet / outlet 0381 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. When the refrigerant discharged from the first refrigerant inlet / outlet 0381 does not meet the cooling requirements of the first cooling device 121, the refrigeration unit 030 is started, and the refrigerant discharged from the refrigeration unit's refrigerant outlet 0301 is input into the first cold side of the first cooling device 121 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 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.

[0047] The refrigerant output from the outlet 1222 of the second cold side of the second refrigeration equipment 122 is transported to the refrigeration unit 030 via the refrigerant return port 0302 of the refrigeration unit.

[0048] Furthermore, such as Figure 3 As shown, the refrigerant tank 038 is equipped with a third refrigerant inlet / outlet 0383; The third refrigerant inlet / outlet 0383 is connected to the refrigerant return port 0302 of the refrigeration unit, and the third refrigerant inlet / outlet 0383 is also connected to the outlet 1222 of the second cold side; 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 first refrigerant inlet / outlet 0381.

[0049] Specifically, the refrigerant output from the outlet 1222 of the second cold side can be transported to the refrigeration unit 030 for refrigeration through the refrigerant return port 0302 of the refrigeration unit. The refrigerant output from the outlet 1222 of the second cold side can be transported to the refrigerant tank 038 for storage through the third refrigerant inlet / outlet 0383. The refrigerant output from the refrigerant tank 038 through the third refrigerant inlet / outlet 0383 is transported to the refrigeration unit 030 for refrigeration through the refrigerant return port 0302 of the refrigeration unit.

[0050] The refrigerant output from the outlet 1222 of the second cold side of the second cooling device 122 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 of the second cooling device 122 is transported back to the refrigeration unit 030 for cooling treatment via the refrigerant return port 0302 of the refrigeration unit; 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 treatment via the refrigerant return port 0302 of the refrigeration unit; or, both the refrigerant output from the outlet 1222 of the second cold side of the second cooling device 122 and the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 are transported back to the refrigeration unit 030 for cooling treatment via the refrigerant return port 0302 of the refrigeration unit.

[0051] like Figure 3 As shown, the first cooling device 121 is an external cooling module for fermentation liquid, and the second cooling device 122 is a deoxygenated water cooling module, which will be used as an example for explanation.

[0052] The refrigerant output from refrigerant tank 038 through the first refrigerant inlet / outlet 0381 is fed into the cold-side heat exchange channel of the fermentation liquid external cooling module via inlet 1211 on 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 cold-side heat exchange channel of the fermentation liquid external cooling module, refrigeration unit 030 is activated, and the refrigerant output from refrigerant outlet 0301 of refrigeration unit is fed into the cold-side heat exchange channel of the fermentation liquid external cooling module via inlet 1211 on 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 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 is also transported to the refrigerant tank 038 for temporary storage through the first refrigerant inlet / outlet 0381.

[0053] The refrigerant output from the outlet 1212 of the first cold-side section of the external cooling module for fermentation liquid is transported via the inlet 1221 of the second cold-side section to the cold-side heat exchange channel of the deoxygenated water cooling module. In the deoxygenated water cooling module, water in the hot-side heat exchange channel exchanges heat with the refrigerant in the cold-side heat exchange channel. The refrigerant output from the outlet 1222 of the second cold-side section of the cold-side heat exchange channel of the deoxygenated water cooling module is transported via the third refrigerant inlet / outlet 0383 to the refrigerant tank 038 and / or via the refrigerant return port 0302 of the refrigeration unit to the refrigeration unit 030. After the refrigeration unit 030 is started, the refrigerant output from the outlet 1222 of the second cold side of the deoxygenated water cooling module is transported back to the refrigeration unit 030 for cooling through the refrigerant return port 0302 of the refrigeration unit. Alternatively, 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. Or, the refrigerant output from the outlet 1222 of the second cold side of the deoxygenated 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 for cooling through the refrigerant return port 0302 of the refrigeration unit.

[0054] In one embodiment, such as Figure 3 As shown, the refrigeration unit 030 is provided with a refrigerant return port 2 0303; The refrigeration unit 030 is configured to refrigerate the refrigerant input at the refrigerant return port 2 0303 of the refrigeration unit and output the refrigerated refrigerant from the refrigerant outlet 1 0301 of the refrigeration unit. The outlet 1212 of the first cold side is connected to the refrigerant return port 20303 of the refrigeration unit; The temperature of the refrigerant input at the refrigerant return port 20303 of the refrigeration unit is lower than the temperature of the refrigerant input at the refrigerant return port 10302 of the refrigeration unit.

[0055] Specifically, the refrigeration unit 030 is also provided with a refrigerant return port 2 0303. The refrigerant output from the outlet 1212 of the first cold side of the first cooling device 121 is transported to the inlet 1221 of the second cold side of the second cooling device 122. Excess refrigerant output from the outlet 1212 of the first cold side is transported to the refrigeration unit 0303 for cooling and temperature reduction.

[0056] Furthermore, such as Figure 3 As shown, the refrigerant tank 038 is provided with a second refrigerant inlet / outlet 0382; The second refrigerant inlet / outlet 0382 is connected to the outlet 1212 of the first cold side, and the second refrigerant inlet / outlet 0382 is connected to the refrigerant return port 0303 of the refrigeration unit. The temperature of the refrigerant entering and exiting through the second refrigerant inlet / outlet 0382 is higher than the temperature of the refrigerant entering and exiting through the first refrigerant inlet / outlet 0381.

[0057] 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 2 0303 of the refrigeration unit.

[0058] Furthermore, such as Figure 3 As shown, the refrigerant tank is equipped with a third refrigerant inlet / outlet 0383; The third refrigerant inlet / outlet 0383 is connected to the refrigerant return port 0302 of the refrigeration unit, and the third refrigerant inlet / outlet 0383 is also connected to the outlet 1222 of the second cold side. The temperature of the refrigerant entering and exiting through the third refrigerant inlet / outlet 0383 is higher than the temperature of the refrigerant entering and exiting through the second refrigerant inlet / outlet 0382.

[0059] Specifically, the refrigerant output from the outlet 1222 of the second cold side can be transported to the refrigerant tank 038 for storage via the third refrigerant inlet / outlet 0383, and the refrigerant in the refrigerant tank 038 is output from the third refrigerant inlet / outlet 0383 to the refrigerant return port 0302 of the refrigeration unit.

[0060] like Figure 3 As shown, the first cooling device 121 is an external cooling module for fermentation liquid, and the second cooling device 122 is a deoxygenated water cooling module, which will be used as an example for explanation.

[0061] 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.

[0062] During the cooling process of the external cooling module for fermentation liquid, the refrigerant in the refrigerant tank 038 is preferentially used to transport the refrigerant to the cold-side heat exchange channel of the external cooling module. 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 external cooling module for heat exchange and cooling via the inlet 1211 of the first cold side. When the refrigerant output from the first refrigerant inlet / outlet 0381 does not meet the cooling requirements of the external cooling module, the refrigeration unit 030 is activated, and 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. 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 external cooling module of the fermentation liquid through the inlet 1211 of the first cold side for heat exchange and cooling; or, when the external cooling module of the fermentation liquid 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 first cooling equipment 121 for use and then transported to the refrigerant tank 038 for temporary storage.

[0063] The refrigerant output from the outlet 1212 of the first cold side section of the external cooling module of the fermentation liquid is transported to the cold side heat exchange channel of the deoxygenated water cooling module via the inlet 1221 of the second cold side section. The refrigerant output from the outlet 1212 of the first cold side section of the external cooling module of the fermentation liquid that is not used by the deoxygenated water cooling module 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 2 of the refrigeration unit. After the refrigeration unit 030 is started, the refrigerant output from the outlet 1212 of the first cold side of the external cooling module of the fermentation liquid is transported back to the refrigeration unit 030 through the refrigerant return port 2 0303 of the refrigeration unit for cooling and temperature reduction. 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 of the refrigeration unit for cooling and temperature reduction. Alternatively, the refrigerant output from the outlet 1212 of the first cold side of the external cooling module of the fermentation liquid 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 of the refrigeration unit for cooling and temperature reduction.

[0064] The refrigerant output from the outlet 1222 of the second cold side section of the cold side heat exchange channel of the deoxygenated 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 deoxygenated water cooling module is transported back to the refrigeration unit 030 for cooling treatment via the refrigerant return port 0302 of the refrigeration unit; 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 treatment via the refrigerant return port 0302 of the refrigeration unit; or, both the refrigerant output from the outlet 1222 of the second cold side section of the deoxygenated water cooling module and the refrigerant output from the third refrigerant inlet / outlet 0383 of the refrigerant tank 038 are transported back to the refrigeration unit 030 for cooling treatment via the refrigerant return port 0302 of the refrigeration unit.

[0065] 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.

[0066] 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.

[0067] In one embodiment, such as Figure 3 As shown, it also includes a refrigerant redistribution device 130; The refrigerant redispensing device 130 is provided with a first refrigerant inlet 13020 and a first refrigerant outlet 13010; The refrigerant redistribution device 130 is configured to adjust the refrigerant flow rate from the first refrigerant inlet 13020 to the first refrigerant outlet 13010; The first refrigerant inlet 13020 is connected to the outlet 1211 of the first cold side section; The first refrigerant outlet 13010 is connected to the inlet 1221 of the second cold side section; The refrigerant redispensing device 130 is equipped with a refrigerant reuse pump 1303; The outlet of the refrigerant pump 1303 is connected to the first refrigerant outlet 13010, the first refrigerant inlet 13020 is connected to the inlet of the refrigerant pump 1303, and the first refrigerant inlet 13020 is also connected to the inlet of the refrigerant pump 1303 through the first refrigerant control valve 1301. The refrigeration unit 030 is provided with a second refrigerant return port 0303; the refrigeration unit 030 is configured to refrigerate the refrigerant input to the second refrigerant return port 0303 and output the refrigerated refrigerant from the first refrigerant outlet 0301; the outlet 1212 of the first cold side is connected to the 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.

[0068] Specifically, the refrigerant redistribution device 130 can adjust the refrigerant flow rate from the outlet 1212 of the first cold side to the inlet 1221 of the second cold side.

[0069] like Figure 3 As shown, a refrigerant redistribution device 130 is provided between the outlet 1212 of the first cold side and the inlet 1221 of the second cold side. The refrigerant output from the outlet 1212 of the first cold side is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020 and then to the inlet 1221 of the second cold side of the second cooling device 122 via the first refrigerant outlet 13010. The refrigerant output 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 via the refrigerant return port 2 0303 of the refrigeration unit.

[0070] When a refrigerant tank 038 is configured, the refrigerant output from the outlet 1212 of the first cold side that is not used by the refrigerant redistribution device 130 is transported to the refrigeration unit 030 via the refrigerant return port 2 0303 of the refrigeration unit and / or to the refrigerant tank 038 via the second refrigerant inlet / outlet 0382.

[0071] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is transported to the second cooling device 122 via the inlet 1221 of the second cold side.

[0072] The refrigerant redistribution device 130 is equipped with a refrigerant reuse pump 1303, which is used to regulate the flow rate of refrigerant delivered to the first refrigerant outlet 13010. The refrigerant reuse pump 1303 can be a variable frequency pump.

[0073] When the refrigerant redistribution device 130 can meet the requirement that the refrigerant flow rate output from the first cold side of the first cooling device 121 is greater than the refrigerant demand of the second cold side of the second cooling device 122, the refrigerant redistribution device 130 can adjust the amount of refrigerant delivered from the first cold side of the first cooling device 121 to the refrigerant redistribution device 130 to meet the refrigerant usage requirements of the second cold side of the second cooling device 122, thereby expanding the applicability of the second cooling device 122.

[0074] like Figure 3 As shown, the first cooling device 121 is an external cooling module for fermentation liquid, and the second cooling device is a deoxygenated water cooling module, which will be used as an example for explanation.

[0075] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is fed into the cold-side heat exchange channel of the fermentation liquid external cooling module via the inlet 1211 of the first cold side section. The refrigerant output from the outlet 1212 of the first cold side section of the fermentation liquid external cooling module is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. The refrigerant input from the first refrigerant inlet 13020 is transported to the refrigerant pump 1303 via the first reuse refrigerant control valve 1301. The second hot side of the deoxygenated water cooling module... A second hot-side temperature sensor 1225 is installed on the pipe at the outlet 1224 of the second hot-side section. The second hot-side temperature sensor 1225 detects the temperature of the cooled deoxygenated water output from the outlet 1224 of the second hot-side section. The refrigerant redistribution device 130 adjusts the speed of the refrigerant pump 1303 according to the temperature detected by the second hot-side temperature sensor 1225, thereby adjusting the refrigerant flow rate from the first refrigerant inlet 13020 to the first refrigerant outlet 13010, so that the outlet water temperature of the second hot-side section 1224 remains stable. Excess refrigerant output from the outlet 1212 of the first cold-side section of the fermentation liquid external cooling module is delivered to the refrigerant return port 2 0303 of the refrigeration unit 030 and / or the second refrigerant inlet / outlet 0382 of the refrigerant tank 038.

[0076] The refrigerant output from the outlet 1212 of the first cold side of the first cooling device 121 is supplied to the inlet 1221 of the second cold side of the second cooling device 122 to provide cooling capacity to the second cooling device 122. 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 and / 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, thus maintaining the independence of the operation of the first cooling device 121 and the second cooling device 122, improving the operational stability of both, and expanding the applicability of the second cooling device 122.

[0077] In one embodiment, such as Figure 4 As shown, based on Figure 3 In the technical solution of the embodiment, the outlet 1212 of the first cold side is connected to the inlet 1221 of the second cold side through the first refrigerant inlet 13020 and the first refrigerant outlet 13010; The refrigerant redispension device 130 is equipped with a third refrigerant inlet 13040 and a second refrigerant outlet 13050; The refrigerant redistribution device 130 is also configured to adjust the refrigerant flow rate delivered from the third refrigerant inlet 13040 to the first refrigerant outlet 13010 and the second refrigerant outlet 13050; The third refrigerant inlet 13040 is connected to the second refrigerant outlet 13050 through the third refrigerant reuse control valve 1308, and the third refrigerant inlet 13040 is also connected to the inlet of the refrigerant reuse pump 1303 through the fourth refrigerant reuse control valve 1310. The outlet 1222 of the second cold side is connected to the refrigerant return port 0302 of the refrigeration unit in sequence through the third refrigerant inlet 13040, the third refrigerant return control valve 1308, and the second refrigerant outlet 13050.

[0078] Specifically, when the refrigerant temperature input at the first refrigerant inlet 13020 is too low to meet the cooling demand of the second cold side of the second cooling device 122, the refrigerant output from the outlet 1222 of the second cold side of the second cooling device 122 is input into the refrigerant redistribution device 130 via the third refrigerant inlet 13040. The refrigerant input at the third refrigerant inlet 13040 is then transported to the inlet of the refrigerant pump 1303 via the fourth refrigerant reuse control valve 1310. The refrigerant input at the first refrigerant inlet 13020 and the refrigerant input at the third refrigerant inlet 13040 are mixed and then transported to the first refrigerant outlet 13010 via the refrigerant pump 1303.

[0079] The refrigerant input through the third refrigerant inlet 13040 mixes with the refrigerant input through the first refrigerant inlet 13020, which can raise the temperature of the refrigerant at the first refrigerant outlet 13010. Furthermore, a first pneumatic valve 1309 is installed on the connecting pipe between the third refrigerant inlet 13040 and the fourth reuse refrigerant control valve 1310 for on / off control.

[0080] Excess refrigerant input through the third refrigerant inlet 13040 is sequentially transported to the refrigeration unit 030 via the third refrigerant return control valve 1308, the second refrigerant outlet 13050, and the refrigeration unit refrigerant return port 0302. When a refrigerant tank 038 is installed, the refrigerant output from the second refrigerant outlet 13050 is transported to the refrigeration unit 030 via the refrigeration unit refrigerant return port 0302 and / or to the refrigerant tank 038 via the third refrigerant inlet / outlet 0383.

[0081] The first refrigerant inlet 13020 is connected to the inlet of the refrigerant pump 1303 via the first refrigerant return control valve 1301. A refrigerant temperature sensor 1304 is installed on the connecting pipeline between the outlet of the refrigerant pump 1303 and the first refrigerant outlet 13010. The refrigerant redistribution device 130 controls the valve opening of the third refrigerant control valve 1308 based on the temperature detected by the second hot-side temperature sensor 1225 installed on the pipeline of the second hot-side outlet 1224, thereby adjusting the refrigerant flow rate output from the second refrigerant outlet 13050. By adjusting the refrigerant flow rate output from the second refrigerant outlet 13050, the refrigerant flow rate at the first refrigerant inlet 13020 is indirectly controlled and adjusted. The refrigerant redistribution device 130 determines whether to open the first pneumatic valve 1309 based on the temperature detected by the redistribution refrigerant temperature sensor 1304. This controls the refrigerant recirculation temperature regulation at the outlet 1222 of the second cold side of the second cooling device 122, supplying the refrigerant output from the outlet 1222 of the second cold side to the inlet of the fourth refrigerant control valve 1310. The refrigerant redistribution device 130 adjusts the opening of the fourth refrigerant control valve 1310 based on the temperature detected by the redistribution refrigerant temperature sensor 1304, thereby regulating the refrigerant flow rate from the outlet 1222 of the second cold side and adjusting the temperature of the refrigerant output from the first refrigerant outlet 13010.

[0082] The refrigerant redistribution device 130 can automatically adjust the opening of the fourth reuse refrigerant control valve 1310 based on the refrigerant temperature detected by the redistribution refrigerant temperature sensor 1304, thereby adjusting the temperature of the refrigerant output from the first refrigerant outlet 13010; or, the fourth reuse refrigerant control valve 1310 can also be a manual adjustment valve, whereby the operator can manually adjust the opening of the fourth reuse refrigerant control valve 1310 based on the refrigerant temperature display detected by the redistribution refrigerant temperature sensor 1304, thereby adjusting the temperature of the refrigerant output from the first refrigerant outlet 13010.

[0083] The refrigerant input at the first refrigerant inlet 13020 and the refrigerant returned from the third refrigerant inlet 13040 via the fourth refrigerant return control valve 1310 are transported to the first refrigerant outlet 13010 by the refrigerant return pump 1303 to regulate the refrigerant flow rate output from the first refrigerant outlet 13010.

[0084] The first refrigerant control valve 1301 and the refrigerant pump 1303 are both in the open state when the refrigerant redistribution equipment 130 is working, and are closed otherwise.

[0085] Compared to Figure 3 In the technical solution described, when the temperature of the refrigerant at the outlet 1212 of the first cold side of the first cooling device 121 is lower than the temperature requirement of the refrigerant input at the inlet 1221 of the second cold side of the second cooling device 122, the refrigerant redistribution device 130 adjusts the opening of the fourth refrigerant control valve 1310 to adjust the amount of refrigerant delivered from the third refrigerant inlet 13040 to the refrigerant pump 1303. This redistributes the refrigerant output from the outlet 1212 of the first cold side of the first cooling device 121 and the further heat-exchanged refrigerant output from the outlet 1222 of the second cold side of the second cooling device 122, precisely controlling the temperature of the refrigerant output from the first refrigerant outlet 13010 to remain stable, thereby meeting the cooling requirements of the second cooling device 122 and further expanding the applicability of the second cooling device 122.

[0086] like Figure 4 As shown, the first cooling device 121 is an external cooling module for fermentation liquid, and the second cooling device is a deoxygenated water cooling module, which will be used as an example for explanation.

[0087] When the temperature of the refrigerant output from the outlet 1212 of the first cold side of the fermentation liquid external cooling module is lower than the temperature requirement of the refrigerant input from the inlet 1221 of the second cold side of the deoxygenated water cooling module.

[0088] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 is fed into the cold-side heat exchange channel of the fermentation liquid external cooling module via the inlet 1211 of the first cold side section. The refrigerant output from the outlet 1212 of the first cold side section of the fermentation liquid external cooling module is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. The refrigerant output from the outlet 1222 of the second cold side section of the deoxygenated water cooling module is fed into the refrigerant redistribution device 130 via the third refrigerant inlet 13040. The refrigerant input from the first refrigerant inlet 13020 and the refrigerant input from the third refrigerant inlet 13040 are mixed and then transported to the first refrigerant outlet 13010 via the recycle refrigerant pump 1303, so that the temperature of the refrigerant output from the first refrigerant outlet 13010 meets the cooling temperature requirements of the deoxygenated water cooling module. The refrigerant not used by the refrigerant redistribution device 130 output from the outlet 1212 of the first cold side of the external cooling module of the fermentation liquid is transported to the refrigeration unit 030 via the refrigerant return port 2 0303 of the refrigeration unit and / or to the refrigerant tank 038 via the second refrigerant inlet and outlet 0382.

[0089] The refrigerant output from the outlet 1222 of the second cold side of the deoxygenated water cooling module, except for the portion used for the second cooling equipment 122 through the fourth reuse refrigerant control valve 1310 in the refrigerant redistribution device 130, is output from the second refrigerant outlet 13050 through the third reuse refrigerant control valve 1308. The refrigerant output from the second refrigerant outlet 13050 is transported to the refrigeration unit 030 through the refrigerant return port 0302 of the refrigeration unit and / or to the refrigerant tank 038 through the third refrigerant inlet and outlet 0383.

[0090] The first refrigerant outlet 13010 of the refrigerant redistribution device 130 can output a refrigerant with a basically constant temperature, ensuring that the deoxygenated water cooling module can achieve stable operation without freezing, and expanding the application range of the second cooling device 122.

[0091] In one embodiment, such as Figure 5 As shown, the outlet 1212 of the first cold side is connected to the inlet 1221 of the second cold side through the first refrigerant inlet 13020 and the first refrigerant outlet 13010; The refrigerant redispension device 130 is equipped 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.

[0092] Specifically, when the temperature of the refrigerant input to the first refrigerant inlet 13020 is too high to meet the cooling demand of the second cold side of the second cooling equipment 122, part 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 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.

[0093] When a refrigerant tank 038 is configured, if the temperature of the refrigerant input to the first refrigerant inlet 13020 is too high to meet the cooling demand of the second cold side of the second cooling equipment 122, 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 refrigeration unit refrigerant outlet 0301 is transported to the second refrigerant inlet 13030 and then to the inlet of the refrigerant pump 1303 via the second refrigerant reuse control valve 1306.

[0094] 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 of the second cold side of the second cooling device 122. 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.

[0095] like Figure 5 As shown, the following explanation uses the first cooling device 121 as an external cooling module for fermentation liquid and the second cooling device as an ice water cooling module as an example.

[0096] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 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. The refrigerant output from the fermentation liquid external cooling module through the outlet 1212 of the first cold side section is input into the refrigerant redistribution device 130 through the first refrigerant inlet 13020. When the temperature of the refrigerant input into the first refrigerant inlet 13020 is higher than the refrigerant temperature required by the second cold side of the second cooling device 122, part of 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 transported to the refrigerant redistribution device 130 through the second refrigerant inlet 13030. 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 through the recycle refrigerant pump 1303. The refrigerant output from the first refrigerant outlet 13010 is then transported to the inlet 1221 of the second cold side of the ice water cooling module.

[0097] 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 on the outlet connection pipe of the reuse refrigerant pump 1303, thereby adjusting the flow rate of 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.

[0098] A second hot-side temperature sensor 1225 is installed on the pipe of the outlet 1224 of the second hot side of the chilled water cooling module to detect the temperature. The refrigerant redistribution device 130 adjusts the speed of the refrigerant pump 1303 according to the temperature detected by the second hot-side temperature sensor 1225, so as to adjust the refrigerant flow rate output by the first refrigerant outlet 13010, so that the outlet water temperature of the outlet 1224 of the second hot side of the chilled water cooling module remains stable.

[0099] When the refrigerant temperature output from the first cold side of the first cooling device 121 is higher than the refrigerant temperature required by the second cold side of the second cooling device 122, the refrigerant dosage input to the second refrigerant inlet 13030 is adjusted by the refrigerant redistribution device 130. The refrigerant input from the first refrigerant inlet 13020 and the refrigerant input from the second refrigerant inlet 13030 are mixed to precisely control the refrigerant temperature output from the first refrigerant outlet 13010 to keep it stable, thereby meeting the cooling requirements of the second cooling device 122 and expanding the applicability of the second cooling device 122.

[0100] Furthermore, such as Figure 6As shown, the refrigerant redistribution device 130 is provided with a third refrigerant inlet 13040 and a second refrigerant outlet 13050; The refrigerant redistribution device 130 is also configured to adjust the refrigerant flow rate delivered from the third refrigerant inlet 13040 to the first refrigerant outlet 13010 and the second refrigerant outlet 13050; The third refrigerant inlet 13040 is connected to the second refrigerant outlet 13050 through the third refrigerant reuse control valve 1308, and the third refrigerant inlet 13040 is also connected to the inlet of the refrigerant reuse pump 1303 through the fourth refrigerant reuse control valve 13010. The outlet 1222 of the second cold side is connected to the refrigerant return port 0302 of the refrigeration unit in sequence through the third refrigerant inlet 13040, the third refrigerant return control valve 1308, and the second refrigerant outlet 13050.

[0101] Specifically, the refrigerant output from the outlet 1222 of the second cold side of the second refrigeration unit 122 is fed into the refrigerant redistribution device 130 via the third refrigerant inlet 13040. The refrigerant fed into the third refrigerant inlet 13040 is transported to the inlet of the refrigerant pump 1303 via the fourth refrigerant recovery control valve 1310. Excess refrigerant fed into the third refrigerant inlet 13040 is transported to the refrigerant return port 0302 and / or the third refrigerant inlet / outlet 0383 of the refrigeration unit via the third refrigerant recovery control valve 1308 and the second refrigerant outlet 13050. The refrigerant fed into the first refrigerant inlet 13020 is mixed with the refrigerant fed into the second refrigerant inlet 13030 or the refrigerant fed into the third refrigerant inlet 13040 and then transported to the first refrigerant outlet 13010 via the refrigerant recovery pump 1303.

[0102] The refrigerant redistribution device 130 is equipped with a first refrigerant inlet 13020, a second refrigerant inlet 13030, and a third refrigerant inlet 13040. The refrigerant redistribution device 130 adjusts the flow rate of the refrigerant input to the second refrigerant inlet 13030 or the third refrigerant inlet 13040 according to the temperature requirements of the refrigerant output from the first refrigerant outlet 13010. This achieves precise control of the refrigerant output temperature from the first refrigerant outlet 13010, ensuring that the refrigerant input temperature of the second cooling device 122 remains stable and maximizing the applicability of the second cooling device 122.

[0103] like Figure 6 As shown, the first cooling device 121 is a fermenter with a cold-side heat exchange channel, and the second cooling device is an ice water cooling module, which will be used as an example for explanation.

[0104] The temperature of the refrigerant output from the outlet 1212 of the first cold side of the fermenter is unstable. The refrigerant redistribution device 130 ensures that the temperature of the refrigerant input to the inlet 1221 of the second cold side of the chilled water cooling module remains basically stable, so as to ensure that the chilled water cooling module can operate normally.

[0105] The refrigerant output from the outlet 1212 of the first cold side of the fermenter is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. Excess refrigerant is transported to the refrigeration unit 030 via the refrigerant return port 2 of the refrigeration unit and / or to the refrigerant tank 038 via the second refrigerant inlet and outlet 0382.

[0106] The refrigerant redistribution device 130 controls the opening of the third refrigerant control valve 1308 according to the second hot side temperature sensor 1225 installed on the pipe of the outlet 1224 of the second hot side, so as to control the refrigerant flow rate output from the second refrigerant outlet 13050. By adjusting the refrigerant output from the second refrigerant outlet 13050, the refrigerant flow rate of the first refrigerant inlet 13020 is indirectly controlled and adjusted.

[0107] The refrigerant redistribution device 130 controls the opening of the first pneumatic valve 1309 or the second pneumatic valve 1307 based on the redistribution refrigerant temperature sensor 1304 on the outlet connection pipe of the refrigerant pump 1303, and adjusts the opening degree of the third refrigerant control valve 1308 or the fourth refrigerant control valve 1310. The third refrigerant control valve 1308 adjusts the refrigerant input amount of the second refrigerant inlet 13030, and the fourth refrigerant control valve 1310 adjusts the flow rate of the refrigerant returned from the third refrigerant inlet 13040 through the fourth refrigerant control valve 1310, so as to adjust the temperature of the refrigerant output from the first refrigerant outlet 13010. The refrigerant input from the first refrigerant inlet 13020 is mixed with the refrigerant returned from the third refrigerant inlet 13040 via the fourth refrigerant return control valve 1310 or the refrigerant input from the second refrigerant inlet 13030, and then transported to the first refrigerant outlet 13010 by the refrigerant return pump 1303 to regulate the refrigerant flow rate output from the first refrigerant outlet 13010.

[0108] When the temperature of the refrigerant input into the first refrigerant inlet 13020 meets the refrigerant temperature input requirement of the inlet 1221 of the second cold side of the chilled water cooling module, the first pneumatic valve 1309 and the second pneumatic valve 1307 are closed. The refrigerant input into the first refrigerant inlet 13020 is transported to the first refrigerant outlet 13010 through the refrigerant reuse pump 1303. The refrigerant output from the first refrigerant outlet 13010 is input into the cold side heat exchange channel of the chilled water cooling module.

[0109] When the temperature of the refrigerant input to the first refrigerant inlet 13020 is higher than the refrigerant temperature input requirement of the second cold side inlet 1221 of the chilled water cooling module, the first pneumatic valve 1309 closes and the second pneumatic valve 1307 opens. The refrigerant redistribution device 130 adjusts the opening of the second reuse refrigerant control valve 1306 according to the redistribution refrigerant temperature sensor 1304 to adjust the refrigerant flow rate input to the second refrigerant inlet 13030, so that the temperature of the refrigerant output from the first refrigerant outlet 13010 meets the refrigerant temperature input requirement of the second cold side inlet 1221 of the chilled water cooling module.

[0110] When the temperature of the refrigerant input to the first refrigerant inlet 13020 is lower than the refrigerant temperature input requirement of the second cold side inlet 1221 of the chilled water cooling module, the first pneumatic valve 1309 opens and the second pneumatic valve 1307 closes. The refrigerant redistribution device 130 adjusts the opening of the fourth reuse refrigerant control valve 1310 according to the redistribution refrigerant temperature sensor 1304 to control the refrigerant flow rate delivered from the third refrigerant inlet 13040 to the reuse refrigerant pump 1303, so that the temperature of the refrigerant output from the first refrigerant outlet 13010 meets the refrigerant temperature input requirement of the second cold side inlet 1221 of the chilled water cooling module. Excess refrigerant input from the third refrigerant inlet 13040 is delivered via the third reuse refrigerant control valve 1308 and the second refrigerant outlet 13050 to the refrigeration unit refrigerant return port 0302 of the refrigeration unit 030 and / or the third refrigerant inlet / outlet 0383 of the refrigerant tank 038.

[0111] In one embodiment, such as Figure 7 As shown, based on Figure 5 In the technical solution described, the first refrigerant outlet 13010 is connected to the inlet 1211 of the first cold side.

[0112] Specifically, the refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is transported to the second cooling device 122 via the inlet 1221 of the second cold side, and the refrigerant output from the first refrigerant outlet 13010 is also transported to the first cooling device 121 via the inlet 1211 of the first cold side.

[0113] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 can also be transported to the first cold side of the first cooling device 121 for reuse, which is more conducive to reducing the amount of refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030, so as to reduce the refrigeration power consumption of the refrigerant reuse refrigeration and cooling system.

[0114] like Figure 7As shown, the first cooling device 121 is a fermentation tank group with a cold-side heat exchange channel. The fermentation tank group usually includes multiple fermentation tanks, and the fermentation tanks are equipped with cold-side heat exchange channels. The second cooling device 122 is an ice water cooling module, and the ice water cooling module is a plate heat exchanger as an example for explanation.

[0115] The refrigerant output from the refrigerant outlet 0301 of the refrigeration unit 030 and / or the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 is fed into the cold-side heat exchange channel of the fermenter via the inlet 1211 of the first cold-side section. The refrigerant output from the outlet 1212 of the first cold-side section of the cold-side heat exchange channel of the fermenter is transported to the refrigerant redistribution device 130 via the first refrigerant inlet 13020. Excess refrigerant output from the outlet 1212 of the first cold-side section of the cold-side heat exchange channel of the fermenter is transported to the refrigerant return port 0303 of the refrigeration unit 030 and / or the second refrigerant inlet / outlet 0382 of the refrigerant tank 038.

[0116] The refrigerant input from the first refrigerant inlet 13020 is delivered to the refrigerant pump 1303 via the first refrigerant reuse control valve 1301. The connecting pipe between the first refrigerant reuse control valve 1301 and the refrigerant pump 1303 is also equipped with a refrigerant reuse check valve 1302, which prevents the refrigerant from flowing backward through the first refrigerant inlet 13020.

[0117] A refrigerant pressure sensor 1305 is also 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 each cooling device. The inlet flow rate of the cold side of different cooling devices is adjusted according to the refrigerant usage requirements of each cooling device.

[0118] The refrigerant output from the first refrigerant outlet 13010 is divided into two paths. One path delivers the refrigerant to the cold-side heat exchange channel of the chilled water cooling module, and the other path delivers it to the cold-side heat exchange channel of the fermenter in the early stage of fermentation. A refrigerant temperature sensor 1304 is also installed on the connecting pipe between the refrigerant pump 1303 and the first refrigerant outlet 13010. The refrigerant redistribution device 130 detects the temperature of the refrigerant based on the refrigerant temperature sensor 1304, controls the opening and closing of the second pneumatic valve 1307, and adjusts the opening of the second refrigerant control valve 1306 to regulate the flow rate of the refrigerant entering the second refrigerant inlet 13030. An increase in the amount of refrigerant input to the second refrigerant inlet 13030 lowers the temperature of the refrigerant output from the first refrigerant outlet 13010, and vice versa.

[0119] For example, when the temperature of the refrigerant supplied from the first refrigerant outlet 13010 to the inlet 1221 of the second cold side of the second cooling device 122 is -1 degree Celsius in the refrigerant redistribution device 130, if the temperature detected by the redistribution refrigerant temperature sensor 1304 is > -1 degree Celsius, the second pneumatic valve 1307 is activated to supply the refrigerant input to the third refrigerant inlet 13030 to the second reuse refrigerant control valve 1306. By adjusting the opening of the second reuse refrigerant control valve 1306, the flow rate of the refrigerant entering the third refrigerant inlet 13030 is adjusted, thereby reducing the temperature of the refrigerant output from the first refrigerant outlet 13010. Conversely, if the temperature detected by the redistribution refrigerant temperature sensor 1304 is ≤ -1 degree Celsius, the second pneumatic valve 1307 and the second reuse refrigerant control valve 1306 are closed to shut off the input of refrigerant to the third refrigerant inlet 13030.

[0120] Figure 7 The first cooling device 121 in the technical solution adopts a fermentation tank group, which includes multiple fermentation tanks, each equipped with a cold-side heat exchange channel. Different fermentation tanks have different temperature control requirements during the early and late fermentation stages. The refrigerant temperature used in the cold-side heat exchange channel of the early fermentation tank can be higher than that used in the cold-side heat exchange channel of the late fermentation tank. The refrigerant output from the cold-side heat exchange channel of the late fermentation tank is lower than that output from the cold-side heat exchange channel of the early fermentation tank. After being output, the refrigerant from the cold-side heat exchange channel of the late fermentation tank and the refrigerant from the cold-side heat exchange channel of the early fermentation tank are mixed in the pipeline to lower the overall temperature of the output refrigerant. This allows the refrigerant to be supplied to the inlet 1211 of the first cold side of the early fermentation tank through the first refrigerant outlet 13010 of the refrigerant rebalancing device 130, further improving the refrigerant utilization efficiency.

[0121] 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 can be supplied to the ice water cooling module on the one hand, and to the cold side heat exchange channel of the fermentation tank in the early fermentation stage for temperature control on the other hand. This further 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.

[0122] 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 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 down the fermentation broth in the later-stage fermentation tank.

[0123] like Figure 9 As shown, the following description uses the first cooling device 121 as a fermentation tank group and the second cooling device 122 as an ice water cooling module as an example. The fermentation tank group includes multiple fermentation tanks and multiple external cooling modules for the fermentation liquid. The inlet and outlet of each fermentation tank are interconnected with the inlet and outlet of the corresponding external cooling module for the fermentation liquid via pumps. The external cooling module for the fermentation liquid is equipped with cold-side heat exchange channels and hot-side heat exchange channels for mutual heat exchange. The ice water cooling module is a plate heat exchanger.

[0124] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is delivered to the cold-side heat exchange channel of the external cooling module and the cold-side heat exchange channel of the chilled water cooling module corresponding to the fermentation liquid in the early fermentation stage of the fermenter. (Related information...) Figure 9 The process of adjusting the temperature and flow rate of the refrigerant in the 130 medium-load refrigerant redistribution equipment can be referenced. Figure 7 The explanation in the document.

[0125] The fermentation broth in the fermentation tank during the initial fermentation stage is circulated to the hot-side heat exchange channel of the corresponding external cooling module for fermentation broth via a pump. The fermentation broth in the hot-side heat exchange channel of the external cooling module for initial fermentation stage exchanges heat with the refrigerant in the cold-side heat exchange channel to circulate and control the temperature of the fermentation broth in the fermentation tank during initial fermentation stage.

[0126] 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.

[0127] like Figure 8 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, 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. The external cooling module for fermentation liquid can be a plate heat exchanger.

[0128] The refrigerant output from the first refrigerant outlet 13010 of the refrigerant redistribution device 130 is delivered to the cold-side heat exchange channel of the fermenter in the early stage of fermentation and the cold-side heat exchange channel of the deoxygenated water cooling module. (Related information...) Figure 8 The process of adjusting the temperature and flow rate of the refrigerant in the 130 medium-load refrigerant redistribution equipment can be referenced. Figure 7 The explanation in the document.

[0129] 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.

[0130] Alternatively, after the initial fermentation is complete, 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 treatment. 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 pumped to the cold-side heat exchange channel of the external cooling module for cooling the fermentation broth.

[0131] The cooled refrigerant output from the hot-side heat exchange channel of the external cooling module for fermentation liquid is transported to the fermenter for later-stage fermentation for cold preservation. Specifically, 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 transported to the cold-side heat exchange channel of the later-stage fermenter to preserve the fermentation liquid in the later-stage fermenter.

[0132] Furthermore, such as Figure 7 As shown, the refrigerant outlet 1301 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 through the second refrigerant control valve 121-4.

[0133] 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. In the later stage of fermentation, the refrigerant outlet 10301 of the refrigeration unit is connected to the inlet of the cold-side heat exchange channel of the fermenter in the later stage of fermentation through the first refrigerant control valve 121-3. In the early stage of fermentation, the first refrigerant outlet 13010 is connected to the inlet of the cold-side heat exchange channel of the fermenter in the early stage of fermentation through the second refrigerant control valve 121-4.

[0134] 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.

[0135] In one embodiment, such as Figure 2 As shown, the refrigeration unit 030 includes a condenser 035, a liquid receiver 036, and at least one 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 0302.

[0136] 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.

[0137] 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 liquid inlet of 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.

[0138] 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.

[0139] Furthermore, such as Figure 7 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, 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 0300 includes 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 air inlet of the condenser 035. The inlet of the cold-side heat exchange channel of the second evaporator 037-2 is connected to the liquid 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 refrigeration unit 030 is provided with a second refrigerant return port 0303; the refrigeration unit 030 is configured to perform refrigeration treatment on the refrigerant input to the second refrigerant return port 0303 and output the refrigerated refrigerant from the first refrigerant outlet 0301; 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 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.

[0140] 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.

[0141] 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 cold-side heat exchange channel of 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.

[0142] 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.

[0143] 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.

[0144] like Figure 7As shown, when the refrigerant reuse refrigeration cooling system is equipped with a refrigerant redistribution device 130, the outlet of the heat exchange channel on the hot side of the second evaporator 037-2 is also connected to the second refrigerant inlet 13030 of the refrigerant redistribution device 130.

[0145] Specifically, based on Figure 7 In the technical solution described, when the refrigerant redistribution device 130 is configured, the refrigerant output from the outlet of the hot-side heat exchange channel of the second evaporator 037-2 is transported to the inlet 1211 of the first cold-side section of the first cooling device 121, the third refrigerant inlet 13030 of the refrigerant redistribution device 130, and / or the first refrigerant inlet / outlet 0381 of the refrigerant tank 038; or, the refrigerant output from the outlet of the hot-side heat exchange channel of the second evaporator 037-2 and / or the refrigerant output from the first refrigerant inlet / outlet 0381 of the refrigerant tank 038 are transported by a refrigerant transfer pump to the inlet 1211 of the first cold-side section of the first cooling device 121 and / or the third refrigerant inlet 13030 of the refrigerant redistribution device 130.

[0146] 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.

[0147] 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.

[0148] Furthermore, such as Figure 10 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.

[0149] 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.

[0150] 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.

[0151] 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. The insufficient part 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 of the first refrigeration equipment 121.

[0152] 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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 7 The two-stage cooling solution in the example has higher overall energy efficiency and is more energy-saving.

[0157] In one embodiment, such as Figure 11 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.

[0158] Specifically, based on Figure 2 The proposed solution Figure 11The 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.

[0159] 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.

[0160] In one embodiment, such as Figure 13 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, 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 0300 includes 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 035-1 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 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 refrigeration unit 030 is provided with a second refrigerant return port 0303; the refrigeration unit 030 is configured to perform refrigeration treatment on the refrigerant input to the second refrigerant return port 0303 and output the refrigerated refrigerant from the first refrigerant outlet 0301; 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 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.

[0161] Specifically, based on Figure 11 The proposed solution Figure 12The 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 7 Explanation of the Chinese solution.

[0162] 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.

[0163] 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.

[0164] Among them, such as Figure 13 As shown, 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.

[0165] Furthermore, such as Figure 13 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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.

[0170] 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.

[0171] 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.

[0172] In one embodiment, such as Figure 12 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.

[0173] 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.

[0174] 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 complex refrigeration cooling system for beer production, characterized in that, include: Refrigeration unit, wherein 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 and output the refrigerated refrigerant at the refrigerant outlet. The cooling unit includes a first cooling device and a second cooling device; The first refrigeration device includes a first cold side and a first hot side that exchange heat with each other; The second refrigeration device includes a second cold side and a second hot side that exchange heat with each other; The temperature of the refrigerant input at the inlet of the first cold side is lower than the temperature of the refrigerant input at the inlet of the second cold side, and the temperature of the refrigerant output at the outlet of the first cold side is lower than the temperature of the refrigerant output at the outlet of the second cold side. The outlet of the first cold side is connected to the inlet of the second cold side; The refrigerant outlet of the refrigeration unit is connected to the inlet of the first cold side, the outlet of the second cold side is connected to the refrigerant return port of the refrigeration unit, and a refrigerant delivery pump is also provided between the refrigerant outlet of the refrigeration unit and the inlet of the first cold side.

2. The refrigerant reuse refrigeration and cooling system for beer production according to claim 1, characterized in that, The first cold side is the first cold side heat exchange channel; The second cold side is a second cold side heat exchange channel, the second hot side is a second hot side heat exchange channel, and the second cold side heat exchange channel and the second hot side heat exchange channel exchange heat with each other. The outlet of the first cold-side heat exchange channel is connected to the inlet of the second cold-side heat exchange channel.

3. The refrigerant reuse refrigeration and cooling system for beer production according to claim 2, characterized in that, The first hot side is a first hot side heat exchange channel, and the first cold side heat exchange channel exchanges heat with the first hot side heat exchange channel. Alternatively, the first hot side is a hot side heat exchange container, and the first cold side heat exchange channel is disposed on the hot side heat exchange container, and the first cold side heat exchange channel exchanges heat with the hot side heat exchange container. 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.

4. The refrigerant reuse refrigeration and cooling system for beer production 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 for beer production according to claim 4, characterized in that, The refrigerant tank is equipped with a third refrigerant inlet and outlet; The third refrigerant inlet and outlet are connected to the refrigerant return port of the refrigeration unit, and the third refrigerant inlet and outlet are also connected to the outlet of the second cold side. 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 first refrigerant inlet and outlet.

6. The refrigerant reuse refrigeration and cooling system for beer production according to claim 4, characterized in that, The refrigeration unit is equipped with a second refrigerant return port for the refrigeration unit. The refrigeration unit is configured to refrigerate the refrigerant input at the refrigerant return port 2 of the refrigeration unit and output the refrigerated refrigerant from the refrigerant outlet 1 of the refrigeration unit. The outlet of the first cold side is connected to the second refrigerant return port of the refrigeration unit. The temperature of the refrigerant input at the second refrigerant return port of the refrigeration unit is lower than the temperature of the refrigerant input at the first refrigerant return port of the refrigeration unit.

7. The refrigerant reuse refrigeration and cooling system for beer production according to claim 6, characterized in that, The refrigerant tank is equipped with a second refrigerant inlet and outlet; The second refrigerant inlet and outlet are connected to the outlet of the first cold side, and the second refrigerant inlet and outlet are connected to the second refrigerant return port of the refrigeration unit; 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.

8. The refrigerant reuse refrigeration and cooling system for beer production according to claim 7, characterized in that, The refrigerant tank is equipped with a third refrigerant inlet and outlet; The third refrigerant inlet and outlet are connected to the refrigerant return port of the refrigeration unit, and the third refrigerant inlet and outlet are also connected to the outlet of the second cold side. 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.

9. The refrigerant reuse refrigeration and cooling system for beer production according to claim 1, characterized in that, It also includes refrigerant redistribution equipment; The refrigerant redispension device is equipped with a first refrigerant inlet and a first refrigerant outlet; The refrigerant redistribution device is configured to adjust the refrigerant flow rate from the first refrigerant inlet to the first refrigerant outlet; The first refrigerant inlet is connected to the outlet of the first cold side section; The first refrigerant outlet is connected to the inlet of the second cold side section; The refrigerant redispensing equipment is equipped with a refrigerant reuse pump; The outlet of the refrigerant pump is connected to the first refrigerant outlet, and the first refrigerant inlet is connected to the inlet of the refrigerant pump. The refrigeration unit is provided with a second refrigerant return port; the refrigeration unit is configured to refrigerate the refrigerant input to the second refrigerant return port and output the refrigerated refrigerant from the first refrigerant outlet; the temperature of the refrigerant input to the second refrigerant return port is lower than the temperature of the refrigerant input to the first refrigerant return port. The outlet of the first cold side is connected to the refrigerant return port 2 of the refrigeration unit.

10. The refrigerant reuse refrigeration and cooling system for beer production according to claim 9, characterized in that, The outlet of the first cold side is connected to the inlet of the second cold side through the first refrigerant inlet and the first refrigerant outlet; The refrigerant redispension equipment is equipped with a third refrigerant inlet and a second refrigerant outlet; The refrigerant redistribution device is also configured to adjust the refrigerant flow rate delivered from the third refrigerant inlet to the first refrigerant outlet and the second refrigerant outlet; The third refrigerant inlet is connected to the second refrigerant outlet through a third refrigerant reuse control valve, and the third refrigerant inlet is also connected to the inlet of the refrigerant reuse pump through a fourth refrigerant reuse control valve. The outlet of the second cold side is connected to the refrigerant return port of the refrigeration unit in sequence through the third refrigerant inlet, the third refrigerant return control valve, and the second refrigerant outlet.

11. The refrigerant reuse refrigeration and cooling system for beer production according to claim 9, characterized in that, The outlet of the first cold side is connected to the inlet of the second cold side through the first refrigerant inlet and the first refrigerant outlet; 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 1303 via the second refrigerant recovery control valve; The refrigerant outlet of the refrigeration unit is also connected to the second refrigerant inlet.

12. The refrigerant reuse refrigeration and cooling system for beer production according to claim 11, characterized in that, The refrigerant redispension equipment is equipped with a third refrigerant inlet and a second refrigerant outlet; The refrigerant redistribution device is also configured to adjust the refrigerant flow rate delivered from the third refrigerant inlet to the first refrigerant outlet and the second refrigerant outlet; The third refrigerant inlet is connected to the second refrigerant outlet through a third refrigerant reuse control valve, and the third refrigerant inlet is also connected to the inlet of the refrigerant reuse pump through a fourth refrigerant reuse control valve. The outlet of the second cold side is connected to the refrigerant return port of the refrigeration unit in sequence through the third refrigerant inlet, the third refrigerant return control valve, and the second refrigerant outlet.

13. The refrigerant reuse refrigeration and cooling system for beer production according to claim 11, characterized in that, The first refrigerant outlet is connected to the inlet of the first cold side.

14. The refrigerant reuse refrigeration and cooling system for beer production according to claim 1, characterized in that, The refrigeration unit includes a condenser, a liquid receiver, and at least one 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.

15. The refrigerant reuse refrigeration and cooling system for beer production according to claim 14, 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 through the third refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting through the second refrigerant inlet and outlet, and the temperature of the refrigerant entering and exiting through the second refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting through 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 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 refrigeration unit is provided with a second refrigerant return port; the refrigeration unit is configured to refrigerate the refrigerant input to the second refrigerant return port and output the refrigerated refrigerant from the first refrigerant outlet; the temperature of the refrigerant input to the second refrigerant return port is lower than the temperature of the refrigerant input to the first refrigerant return port. 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.

16. The refrigerant reuse refrigeration and cooling system for beer production according to claim 15, 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.

17. The refrigerant reuse refrigeration and cooling system for beer production 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.

18. The refrigerant reuse refrigeration and cooling system for beer production according to claim 1, 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 through the third refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting through the second refrigerant inlet and outlet, and the temperature of the refrigerant entering and exiting through the second refrigerant inlet and outlet is higher than the temperature of the refrigerant entering and exiting through 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 refrigeration unit is provided with a second refrigerant return port; the refrigeration unit is configured to perform refrigeration treatment on the refrigerant input to the second refrigerant return port and output the refrigerated refrigerant from the first refrigerant outlet. 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.

19. The refrigerant reuse refrigeration and cooling system for beer production according to claim 18, 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.

20. The refrigerant reuse refrigeration and cooling system for beer production 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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