Refrigeration equipment, water chilling unit and control method of refrigeration equipment

Abstract

The invention relates to the technical field of compression refrigeration, and discloses refrigeration equipment, a water chilling unit and a control method of the refrigeration equipment. The refrigeration equipment comprises a plurality of refrigerant circulation systems and a refrigerant transmission assembly. The condensers of any two refrigerant circulation systems are connected through a refrigerant transmission assembly, and the refrigerant transmission assembly is used for transferring a refrigerant of one condenser to the other condenser. By arranging a plurality of refrigerant circulation systems and refrigerant transmission assemblies, when a refrigerant needs to be emptied during fault maintenance of one refrigerant circulation system, a condenser of the refrigerant circulation system is connected with a condenser of any other refrigerant circulation system through the refrigerant transmission assemblies; the refrigerant transmission assembly can transfer the liquid refrigerant of the refrigerant circulation system to the other refrigerant circulation system, so that the amount of the refrigerant discharged into the air can be reduced, and the problems of refrigerant waste and environmental pollution caused by the fact that the refrigerant needs to be emptied when the refrigerant circulation system in the prior art breaks down and is maintained are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of compression refrigeration, and particularly relates to a refrigeration device, a chiller and a control method for a refrigeration device. Background Art

[0002] A refrigerant circulation system generally includes devices such as an evaporator, a condenser, a compressor and a throttling expansion valve. The outlet of the evaporator is communicated with the inlet of the condenser through a gas transmission pipe, and a compressor is arranged on the gas transmission pipe; the liquid outlet of the condenser is communicated with the liquid inlet of the evaporator through a liquid transmission pipe, and a throttling expansion valve is arranged on the liquid transmission pipe. The evaporator is used for heating the liquid refrigerant to vaporize the liquid refrigerant. The compressor compresses the gaseous refrigerant discharged from the outlet of the evaporator and discharges the compressed gaseous refrigerant into the condenser; the condenser condenses the gaseous refrigerant to liquefy the gaseous refrigerant into a liquid refrigerant, and finally the liquid refrigerant discharged from the condenser returns to the evaporator after passing through the throttling expansion valve, forming a refrigerant circulation loop.

[0003] When a current refrigerant circulation system fails and needs to be repaired, the refrigerant needs to be emptied and directly discharged into the air. This not only causes waste of the refrigerant, but also causes environmental pollution.

[0004] Therefore, how to solve the problems of refrigerant waste and environmental pollution is an urgent problem to be solved in the industry. Summary of the Invention

[0005] The present invention provides a refrigeration device, a chiller and a control method for a refrigeration device, so as to solve the problems of refrigerant waste and environmental pollution caused when the refrigerant circulation system in the prior art fails and needs to be repaired and the refrigerant needs to be emptied.

[0006] The first aspect of the present invention provides a refrigeration device, including: A plurality of refrigerant circulation systems, A refrigerant transmission component, the condensers of any two of the refrigerant circulation systems are connected through the refrigerant transmission component, and the refrigerant transmission component is used for transferring the refrigerant of one condenser to another condenser.

[0007] According to the refrigeration device provided by the present invention, the refrigerant transmission component includes: A first refrigerant transmission pipe, one end of the first refrigerant transmission pipe is communicated with one condenser, and the other end is communicated with another condenser; A first switching valve, the first switching valve is arranged on the first refrigerant transmission pipe and is used for controlling the on-off of the first refrigerant transmission pipe.

[0008] According to the refrigeration device provided by the present invention, the refrigerant transmission component further includes: A refrigerant pump, arranged on the first refrigerant transmission pipe.

[0009] The refrigeration equipment provided by the present invention further includes: A pressure balance assembly. When the refrigerant transfer assembly transfers the refrigerant of one condenser to another condenser, the evaporators of the two refrigerant circulation systems are communicated through the pressure balance assembly.

[0010] For the refrigeration equipment provided by the present invention, the pressure balance assembly includes: A first pressure balance pipe, one end of which is communicated with one evaporator and the other end is communicated with another evaporator; A second switching valve, which is arranged on the first pressure balance pipe and is used to control the on-off of the first pressure balance pipe.

[0011] The refrigeration equipment provided by the present invention further includes: A pressure detection assembly, which is arranged on the evaporator of the refrigerant circulation system and is used to detect the pressure in the evaporator; A pressure relief assembly, which is arranged on the evaporator and is used to discharge the gas in the evaporator.

[0012] The refrigeration equipment provided by the present invention further includes: A liquid volume detection assembly, which is arranged on the refrigerant transfer assembly or / and the condenser and is used to detect the liquid refrigerant volume of the condenser.

[0013] For the refrigeration equipment provided by the present invention, the liquid volume detection assembly includes: A visual liquid volume detection piece, which is arranged on the refrigerant transfer assembly or / and the condenser; Or / and; A liquid level detection piece, which is installed on the condenser and is used to detect the liquid level of the condenser.

[0014] The refrigeration equipment provided by the present invention further includes: A control assembly, which is electrically connected to the refrigerant circulation system and the refrigerant transfer assembly. The control assembly is used to control the refrigerant transfer assembly and the refrigerant circulation system to communicate the condensers of any two refrigerant circulation systems and transfer the refrigerant of one condenser to another condenser.

[0015] The second aspect of the present invention provides a water chiller, which includes the refrigeration equipment described in any one of the above.

[0016] The third aspect of the present invention provides a control method for a refrigeration equipment, which is used for the refrigeration equipment described in any one of the above, or for the water chiller described above. The refrigerant transfer control method includes: Output a refrigerant transfer control instruction to control the refrigerant transmission component and the refrigerant circulation system, so that the condensers of any two of the refrigerant circulation systems are connected, and the refrigerant of one condenser is transferred to another condenser.

[0017] The refrigeration equipment provided by the present invention, by arranging a plurality of refrigerant circulation systems and a refrigerant transmission component, when any one of the refrigerant circulation systems needs to be emptied of refrigerant during fault repair, the refrigerant transmission component is used to connect the condenser of this refrigerant circulation system with the condenser of any other refrigerant circulation system. At this time, the refrigerant transmission component can transfer the liquid refrigerant of this refrigerant circulation system to another refrigerant circulation system, so that the amount of refrigerant discharged into the air can be reduced, and the problems of refrigerant waste and environmental pollution caused by the need to empty the refrigerant during the fault repair of the refrigerant circulation system in the prior art are solved.

[0018] The water chiller provided by the present invention includes the above-mentioned refrigeration equipment, so it has at least the above-mentioned advantages and will not be elaborated here. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of the refrigeration equipment provided by the present invention.

[0021] Reference Signs: 110, evaporator; 120, compressor; 130, condenser; 140, throttling device; 200, refrigerant transmission component; 210, first refrigerant transmission pipe; 220, first switch valve; 230, refrigerant pump; 300, pressure balance component; 310, first pressure balance pipe; 320, second switch valve; 400, liquid volume detection component. Detailed Embodiments

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present invention belong to the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely means that the first feature has a lower horizontal height than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0027] Such as Figure 1As shown in the figure, the refrigerant circulation system includes an evaporator 110, a compressor 120, a condenser 130, and a throttling device 140; the outlet of the evaporator 110 is communicated with the inlet of the condenser 130 through a gas transmission pipe, and the compressor 120 is arranged on the gas transmission pipe; the liquid outlet of the condenser 130 is communicated with the liquid inlet of the evaporator 110 through a liquid transmission pipe, and the throttling device 140 is arranged on the liquid transmission pipe to form a refrigerant circulation loop. The evaporator 110 is used to heat the liquid refrigerant to vaporize the refrigerant, and the gaseous refrigerant enters the compressor 120 through the gas transmission pipe. After being compressed by the compressor, it enters the condenser 130. The condenser 130 liquefies the gaseous refrigerant, and the liquid refrigerant enters the throttling device 140 through the liquid transmission pipe. After being throttled by the throttling device 140, it flows back to the evaporator 110.

[0028] As Figure 1 shown, a specific embodiment of the first aspect of the present invention provides a refrigeration device. The refrigeration device includes a plurality of refrigerant circulation systems and a refrigerant transmission assembly 200; wherein, the condensers 130 of any two refrigerant circulation systems are connected through the refrigerant transmission assembly 200, and the refrigerant transmission assembly 200 is used to transfer the refrigerant of one condenser 130 to another condenser 130.

[0029] In this embodiment, by setting a plurality of refrigerant circulation systems and the refrigerant transmission assembly 200, when any one of the refrigerant circulation systems needs to be emptied for fault repair, the refrigerant transmission assembly 200 is used to connect the condenser 130 of this refrigerant circulation system with the condenser 130 of any other refrigerant circulation system. At this time, the refrigerant transmission assembly 200 can transfer the liquid refrigerant of this refrigerant circulation system to another refrigerant circulation system, so that the amount of refrigerant discharged into the air can be reduced, and the problems of refrigerant waste and environmental pollution caused by emptying the refrigerant when the refrigerant circulation system in the prior art fails to be repaired are solved.

[0030] It can be understood that the refrigerant transmission assembly 200 has a connected state and a disconnected state; in the connected state, the refrigerant transmission assembly 200 can transfer the refrigerant of one condenser 130 to another condenser 130. In the disconnected state, the refrigerants of the two refrigerant circulation systems cannot be transferred to each other.

[0031] It can be understood that the term "plurality" means at least two. That is to say, the refrigeration device of this embodiment includes at least two refrigerant circulation systems. In the embodiments of the present invention, the number of refrigerant circulation systems is not limited. For example, the refrigeration device may include 3 refrigerant circulation systems, 4 refrigerant circulation systems or 5 refrigerant circulation systems.

[0032] It should be noted that in a plurality of refrigerant circulation systems, the condenser 130 of the refrigerant circulation system that needs to be repaired can be connected to the condenser 130 of any other refrigerant circulation system that does not need to be repaired through the refrigerant transmission assembly 200.

[0033] For the sake of convenience of description, taking the refrigeration device including two refrigerant circulation systems as an example, one refrigerant circulation system is named the first refrigerant circulation system, and the other refrigerant circulation system is named the second refrigerant circulation system. The refrigerant transfer process of the refrigeration device includes: When the first refrigerant circulation system needs to be emptied of refrigerant during regular maintenance, the evaporator 110 and condenser 130 of the first refrigerant circulation system are closed, and the compressor 120 of the first refrigerant circulation system is kept running; the evaporator 110, condenser 130 and compressor 120 of the second refrigerant circulation system are all closed, and the refrigerant transmission component 200 is adjusted from the disconnected state to the connected state. The compressor 120 of the first refrigerant circulation system provides the transfer power, and the liquid refrigerant of the first refrigerant circulation system is transferred to the condenser 130 of the second refrigerant circulation system through the condenser 130. Finally, the refrigerant transmission component 200 is adjusted from the connected state to the disconnected state, and the gaseous refrigerant of the first refrigerant circulation system can be emptied.

[0034] After the first refrigerant circulation system completes the fault repair, the evaporator 110 and condenser 130 of the second refrigerant circulation system are closed, and the compressor 120 of the second refrigerant circulation system is kept running; the evaporator 110, condenser 130 and compressor 120 of the first refrigerant circulation system are all closed, and the refrigerant transmission component 200 is adjusted from the connected state to the disconnected state. The compressor 120 of the second refrigerant circulation system provides the transfer power, and the liquid refrigerant of the second refrigerant circulation system is transferred to the condenser 130 of the first refrigerant circulation system through the condenser 130 until all the refrigerant received by the second refrigerant circulation system from the first refrigerant circulation system returns to the first refrigerant circulation system. Finally, the refrigerant transmission component 200 is adjusted from the connected state to the disconnected state.

[0035] It should be noted that the control of the refrigerant circulation system and the control of the refrigerant transmission component 200 during the above refrigerant transfer process can be completed manually or automatically by the control component.

[0036] In some embodiments, the refrigeration device includes a control component; the control component is electrically connected to the refrigerant circulation system and the refrigerant transmission component 200, and the control component is used to control the refrigerant transmission component 200 and the refrigerant circulation system to connect the condensers 130 of any two refrigerant circulation systems, so that the refrigerant of one condenser 130 is transferred to another condenser 130. By setting the control component, the refrigerant transfer steps of the refrigeration device can be made more intelligent.

[0037] Specifically, when the first refrigerant circulation system needs to be emptied of refrigerant during regular maintenance, the control component controls the evaporator 110 and the condenser 130 of the first refrigerant circulation system to close, and controls the compressor 120 of the first refrigerant circulation system to start; controls the evaporator 110, the condenser 130 and the compressor 120 of the second refrigerant circulation system to close, and controls the refrigerant transfer component 200 to be adjusted from the disconnected state to the connected state. The compressor 120 of the first refrigerant circulation system provides the transfer power, and the liquid refrigerant of the first refrigerant circulation system is transferred to the condenser 130 of the second refrigerant circulation system through the condenser 130. Finally, control the refrigerant transfer component 200 to be adjusted from the connected state to the disconnected state, and evacuate the gaseous refrigerant of the first refrigerant circulation system.

[0038] After the first refrigerant circulation system completes the fault repair, the control component controls the evaporator 110 and the condenser 130 of the second refrigerant circulation system to close, and controls the compressor 120 of the second refrigerant circulation system to start; controls the evaporator 110, the condenser 130 and the compressor 120 of the first refrigerant circulation system to close, and controls the refrigerant transfer component 200 to be adjusted from the connected state to the disconnected state. The compressor 120 of the second refrigerant circulation system provides the transfer power, and the liquid refrigerant of the second refrigerant circulation system is transferred to the condenser 130 of the first refrigerant circulation system through the condenser 130 until all the refrigerant received by the second refrigerant circulation system from the first refrigerant circulation system returns to the first refrigerant circulation system. Finally, control the refrigerant transfer component 200 to be adjusted from the connected state to the disconnected state.

[0039] In some embodiments, the refrigerant transfer component 200 includes a first refrigerant transfer pipe 210 and a first switching valve 220; one end of the first refrigerant transfer pipe 210 is connected to one condenser 130, and the other end is connected to another condenser 130; the first switching valve 220 is arranged on the first refrigerant transfer pipe 210 and is used to control the on-off of the first refrigerant transfer pipe 210. By adjusting the first switching valve 220, the on-off of the first refrigerant transfer pipe 210 can be realized. When the first refrigerant circulation system needs to be emptied of refrigerant during fault repair, open the first switching valve 220 of the refrigerant transfer component 200, and the refrigerant in the condenser 130 of the first refrigerant circulation system will be transferred to the condenser 130 of the second refrigerant circulation system along the first transfer pipe. After the liquid refrigerant is transferred, close the first switching valve 220, and then the gaseous refrigerant of the first refrigerant circulation system can be evacuated. After the fault repair is completed, reopen the first switching valve 220, and the liquid refrigerant returns to the condenser 130 of the first refrigerant circulation system. This not only reduces economic losses but also protects the environment.

[0040] Specifically, the first switching valve 220 includes a manual switching valve or an automatic switching valve. Specifically, the automatic switching valve includes an electromagnetic valve.

[0041] Exemplarily, the control component is electrically connected to the first switching valve 220 to control the opening or closing of the first switching valve 220.

[0042] It can be understood that a manual switching valve refers to a valve that needs to be manually opened or closed by a person. An automatic switching valve is a valve that can be controlled to open or close through an electric circuit.

[0043] Furthermore, a first mounting hole is provided on the lower side of the condenser 130, and the refrigerant transfer assembly 200 is installed in the first mounting hole. With such a design, during the refrigerant transfer process, it is possible to ensure the evacuation of the liquid refrigerant in the condenser 130.

[0044] In some other embodiments, the refrigerant transfer assembly 200 includes a second refrigerant transfer pipe and a first cover body; a third mounting hole is provided on the lower side of the condenser 130, and the first cover body is detachably covered on the third mounting hole. One end of the second refrigerant transfer pipe is detachably connected to the third mounting hole of one condenser 130, and the other end is detachably connected to the third mounting hole of another condenser 130. When it is necessary to empty the refrigerant during the maintenance of the first refrigerant circulation system failure, open the third mounting holes of the condensers 130 in the first refrigerant circulation system and the third mounting holes of the condensers 130 in the second refrigerant circulation system, and then install both ends of the second refrigerant transfer pipe on the third mounting holes of the above two condensers 130. At this time, the compressor 120 in the first refrigerant circulation system is started, so that the refrigerant in the condenser 130 is transferred to another condenser 130 through the second refrigerant transfer pipe. After the liquid refrigerant is transferred, turn off the compressor 120 and re-close the third mounting holes of the two condensers 130 with the first cover body. This avoids setting too many pipelines in the whole device. When it is necessary to transfer the refrigerant, just install the second refrigerant transfer pipe on the two condensers 130, which simplifies the structure of the whole device, reduces the device cost, and at the same time reduces the waste of refrigerant and protects the environment.

[0045] When the compressor 120 of the refrigerant circulation system that needs to be repaired due to a fault provides power for refrigerant transfer, as the liquid refrigerant is transferred out, the pressure output by the compressor 120 will gradually decrease. If the amount of liquid refrigerant to be transferred is large, it is possible that the refrigerant cannot be completely transferred.

[0046] To solve the above problems, in some embodiments, the refrigerant transfer assembly 200 further includes a refrigerant pump 230; the refrigerant pump 230 is provided on the first refrigerant transfer pipe 210. By providing the refrigerant pump 230 on the first refrigerant transfer pipe 210, power can be provided for refrigerant transfer to ensure that the refrigerant can be completely transferred. In addition, when performing refrigerant transfer, the refrigerant pump 230 can also be solely relied on to provide the transfer power for refrigerant transfer.

[0047] Specifically, the control component is electrically connected to the refrigerant pump 230 to control the startup, shutdown, and pumping direction of the refrigerant pump 230. For example, when transferring the liquid refrigerant of the first refrigerant circulation system to the second refrigerant circulation system, the control component controls the refrigerant pump 230 to rotate forward. When transferring the liquid refrigerant of the second refrigerant circulation system to the first refrigerant circulation system, the control component controls the refrigerant pump 230 to rotate in reverse.

[0048] When the refrigerant pump 230 is used to provide power for refrigerant transfer, a pressure difference will occur between the first refrigerant circulation system and the second refrigerant circulation system. The appearance of the pressure difference will reduce the refrigerant transfer speed. Moreover, as the pressure difference increases, it may also cause the refrigerant to not be completely transferred out.

[0049] To solve the above problems, in some embodiments, the refrigeration device further includes a pressure balancing component 300; when the refrigerant transfer component 200 transfers the refrigerant of one condenser 130 to another condenser 130, the evaporators 110 of the two refrigerant circulation systems are connected through the pressure balancing component 300. When the two refrigerant circulation systems transfer refrigerant, a pressure difference may occur. The pressure difference will not only affect the refrigerant transfer speed but also may cause the refrigerant to not be completely transferred. To eliminate the above influence of the pressure difference on refrigerant transfer, in this embodiment, a pressure balancing component 300 is provided between the evaporators 110 of the two refrigerant circulation systems. When the refrigerant transfer component 200 transfers the refrigerant of one condenser 130 to another condenser 130, the evaporators 110 of the two refrigerant circulation systems are connected through the pressure balancing component 300, so that the pressure difference can be balanced.

[0050] It can be understood that the pressure balancing component 300 has a connected state and a disconnected state. When refrigerant needs to be transferred, that is, when the refrigerant pump 230 is started, the pressure balancing component 300 is in the connected state, and the gas paths of the evaporators 110 of the two refrigerant circulation systems are connected to achieve pressure balance between the two refrigerant circulation systems and ensure the smooth transfer of the refrigerant. When refrigerant transfer is not required, the refrigerant pump 230 stops working, and the pressure balancing component 300 is in the disconnected state. At this time, the gas paths of the two refrigerant circulation systems are disconnected.

[0051] Exemplarily, the control component is electrically connected to the pressure balancing component 300 to control the state switching of the pressure balancing component 300. Specifically, when refrigerant needs to be transferred, the control component controls the refrigerant pump 230 to start and simultaneously controls the pressure balancing component 300 to switch to the connected state. At this time, the gas paths of the evaporators 110 of the two refrigerant circulation systems are connected to achieve pressure balance between the two refrigerant circulation systems and ensure the smooth transfer of the refrigerant. When refrigerant transfer is not required, the control component controls the refrigerant pump 230 to stop working and controls the pressure balancing component 300 to switch to the disconnected state. At this time, the gas paths of the two refrigerant circulation systems are disconnected.

[0052] Exemplarily, the pressure balance assembly 300 includes a first pressure balance pipe 310 and a second switching valve 320. One end of the first pressure balance pipe 310 communicates with one evaporator 110, and the other end communicates with another evaporator 110; the second switching valve 320 is disposed on the first pressure balance pipe 310 to control the on / off of the first pressure balance pipe 310. The on / off control of the pressure balance assembly 300 is achieved by setting the second switching valve 320. When the second switching valve 320 is opened, the two evaporators are communicated through the first pressure balance pipe 310, and at this time, the pressure balance of the two evaporators 110 can be achieved. When the second switching valve 320 is closed, the gas paths of the two refrigerant circulation systems are prevented from being communicated, ensuring that the refrigerant circulation systems can independently achieve their respective refrigerant circulations.

[0053] Specifically, the upper side of the evaporator 110 has a second mounting hole, and the first pressure balance pipe 310 is mounted in the second mounting hole to ensure that the steam can be discharged from the evaporator 110 more smoothly.

[0054] Exemplarily, the pressure balance assembly 300 includes a second pressure balance pipe and a second cover body; a fourth mounting hole is formed in the upper side of the evaporator 110, and the second cover body is detachably covered on the fourth mounting hole. One end of the second pressure balance pipe is detachably connected to the fourth mounting hole of one evaporator 110, and the other end is detachably connected to the fourth mounting hole of another evaporator 110. When the first refrigerant circulation system needs to be repaired and the refrigerant needs to be emptied, the fourth mounting holes of the evaporators 110 of the first refrigerant circulation system and the fourth mounting holes of the evaporators 110 of the second refrigerant circulation system are opened, and then the two ends of the second pressure balance pipe are respectively mounted on the fourth mounting holes of the above two evaporators 110. At this time, the refrigerant pump 230 is started to transfer the refrigerant in the condenser 130 to another condenser 130 through the refrigerant transfer assembly 200. After the liquid refrigerant is transferred, the refrigerant pump 230 is turned off, and the fourth mounting holes of the two evaporators 110 are closed again with the second cover body. This avoids setting too many pipelines in the whole device. When it is necessary to balance the pressures of the two refrigerant circulation systems, the second cover body is removed, and the second pressure balance pipe is installed on the two evaporators 110, which simplifies the structure of the whole device and reduces the device cost.

[0055] In some other embodiments, the refrigeration device further includes a pressure detection assembly and a pressure relief assembly. The pressure detection assembly is disposed on the evaporator 110 of the refrigerant circulation system to detect the pressure inside the evaporator 110. The evaporator 110 is provided with a pressure relief assembly for discharging the gas inside the evaporator 110. When performing refrigerant transfer, if there is a pressure difference between the pressures detected by the pressure detection assemblies of the two evaporators 110, the pressure relief assembly of the evaporator 110 with a higher pressure can be opened to achieve pressure relief until the pressures of the two evaporators 110 are balanced again, which can ensure the smooth transfer of the refrigerant.

[0056] Specifically, the control component is electrically connected to the pressure detection component and the pressure relief component; the control component is used to control the pressure relief component according to the pressure value feedback by the pressure detection component to ensure the pressure balance of the two refrigerant circulation systems during refrigerant transfer and ensure the smooth transfer of the refrigerant.

[0057] During refrigerant transfer, the control component determines the pressure difference between the first refrigerant circulation system and the second refrigerant circulation system according to the pressure value feedback by the pressure detection component; if the pressure difference is greater than the pressure difference threshold, the control component controls the pressure relief component of the evaporator 110 with higher pressure to open, and relieves the pressure of the evaporator 110 until the pressure difference between the two evaporators 110 is less than the pressure difference threshold.

[0058] Exemplarily, the pressure relief component includes a pressure relief pipe and a third switching valve. The intake end of the pressure relief pipe is communicated with the evaporator 110. The third switching valve is arranged on the pressure relief pipe. The on-off of the pressure relief pipe is realized by setting the third switching valve, and the pressure of the evaporator 110 is adjusted to ensure the pressure balance of the two refrigerant circulation systems during refrigerant transfer. Specifically, the control component is electrically connected to the third switching valve and is used to control the opening or closing of the third switching valve.

[0059] Exemplarily, the pressure relief component includes a pressure relief valve, and the pressure relief valve is installed at the air outlet of the evaporator 110 and is communicated with the gas transmission pipe. By installing the pressure relief valve at the air outlet of the evaporator 110, additional installation holes are avoided on the evaporator 110, the manufacturing process of the evaporator 110 is simplified, and the structural strength of the evaporator 110 is improved.

[0060] Further, the pressure detection component includes a pressure gauge or a pressure detector.

[0061] In some embodiments, the refrigeration device further includes a liquid quantity detection component 400; the liquid quantity detection component 400 is arranged on the refrigerant transmission component 200 or / and the condenser 130 and is used to detect the liquid refrigerant quantity of the condenser 130. By setting the liquid quantity detection component 400, the power source of the refrigerant transfer can be timely shut down by detecting the quantity of the liquid refrigerant in the condenser 130, that is, the compressor 120 or the refrigerant pump 230 of the refrigerant circulation system that needs to be repaired due to a fault can be timely shut down to avoid idling.

[0062] Further, the liquid quantity detection component 400 includes a visual liquid quantity detection piece or / and a liquid level detector; the visual liquid quantity detection piece is arranged on the refrigerant transmission component 200 or / and the condenser 130. The liquid level detector is installed on the condenser 130 and is used to detect the liquid level of the condenser 130. By setting the visual liquid quantity detection piece and the liquid level detector, the quantity of the liquid refrigerant in the condenser 130 can be observed more intuitively.

[0063] Specifically, the visual liquid volume detector is arranged on the first refrigerant transfer pipe 210, or / and, the liquid level detector is arranged on the condenser 130. By arranging the visual liquid volume detector, the amount of liquid refrigerant can be judged manually, and the refrigerant pump 230 can be turned off in time. By arranging the liquid level detector in the condenser 130 compared with the scheme of arranging the visual liquid volume detector on the first refrigerant transfer pipe 210, it is possible to determine more timely whether the refrigerant has been transferred completely.

[0064] Exemplarily, the visual liquid volume detector includes a sight glass. The sight glass is installed on the first refrigerant transfer pipe 210. When there is no liquid refrigerant passing through the sight glass, the refrigerant transfer operation is stopped.

[0065] Exemplarily, the visual liquid volume detector includes a transparent pipe, and the transparent pipe is installed between the condenser 130 and the first refrigerant transfer pipe 210.

[0066] A specific embodiment of the second aspect of the present invention provides a water chiller. The water chiller includes the refrigeration equipment of any of the above embodiments.

[0067] The water chiller of this embodiment includes the above-mentioned refrigeration equipment, so it has at least the above advantages and will not be elaborated here.

[0068] A specific embodiment of the third aspect of the present invention provides a refrigerant transfer control method, which is used for the refrigeration equipment of any of the above embodiments, or for the water chiller of any of the above embodiments. The refrigerant transfer control method includes: Outputting a refrigerant transfer control instruction to control the refrigerant transfer assembly 200 and the refrigerant circulation system, so that the condensers 130 of any two of the refrigerant circulation systems are connected, and the refrigerant in one condenser 130 is transferred to another condenser 130.

[0069] Specifically, the control component outputs a refrigerant transfer control instruction to control the refrigerant transfer assembly 200 and the refrigerant circulation system, so that the condensers 130 of any two of the refrigerant circulation systems are connected, and the refrigerant in one condenser 130 is transferred to another condenser 130.

[0070] On the other hand, the present invention also provides a computer program product. The computer program product includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the refrigerant transfer control method provided by the above-mentioned various methods. The method includes: outputting a refrigerant transfer control instruction to control the refrigerant transfer assembly and the refrigerant circulation system, so that the condensers of any two of the refrigerant circulation systems are connected, and the refrigerant in one condenser is transferred to another condenser.

[0071] In another aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, it implements the refrigerant transfer control method provided by the above-mentioned various methods. The method includes: outputting a refrigerant transfer control instruction to control a refrigerant transmission component and a refrigerant circulation system, so that the condensers of any two of the refrigerant circulation systems are connected, and the refrigerant of one condenser is transferred to another condenser.

[0072] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. A person of ordinary skill in the art can understand and implement it without creative labor.

[0073] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solution, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A refrigeration device, characterized in that, Comprising: A plurality of refrigerant circulation systems, A refrigerant transfer assembly (200), condensers (130) of any two of the refrigerant circulation systems are connected through the refrigerant transfer assembly (200), and the refrigerant transfer assembly (200) is used to transfer the refrigerant of one condenser (130) to another condenser (130).

2. The refrigeration device according to claim 1, characterized in that, The refrigerant transfer assembly (200) includes: A first refrigerant transfer pipe (210), one end of the first refrigerant transfer pipe (210) is communicated with one condenser (130), and the other end is communicated with another condenser (130); A first switching valve (220), the first switching valve (220) is arranged on the first refrigerant transfer pipe (210) for controlling the on / off of the first refrigerant transfer pipe (210).

3. The refrigeration device according to claim 2, characterized in that, The refrigerant transfer assembly (200) further includes: A refrigerant pump (230), arranged on the first refrigerant transfer pipe (210).

4. The refrigeration device according to claim 3, characterized in that Further comprising: A pressure balance assembly (300), when the refrigerant transfer assembly (200) transfers the refrigerant of one condenser (130) to another condenser (130), evaporators (110) of the two refrigerant circulation systems are communicated through the pressure balance assembly (300).

5. The refrigeration device according to claim 4, characterized in that, The pressure balance assembly (300) includes: A first pressure balance pipe (310), one end of the first pressure balance pipe (310) is communicated with one evaporator (110), and the other end is communicated with another evaporator (110); A second switching valve (320), arranged on the first pressure balance pipe (310) for controlling the on / off of the first pressure balance pipe (310).

6. The refrigeration device according to claim 3, characterized in that, Further comprising: A pressure detection assembly, arranged on the evaporator (110) of the refrigerant circulation system for detecting the pressure inside the evaporator (110); A pressure relief assembly, the evaporator (110) is provided with the pressure relief assembly, and the pressure relief assembly is used to discharge the gas inside the evaporator (110).

7. The refrigeration device according to claim 1, characterized in that, Further comprising: A liquid volume detection assembly (400), arranged on the refrigerant transfer assembly (200) or / and the condenser (130) for detecting the liquid refrigerant volume of the condenser (130).

8. The refrigeration device according to claim 7, characterized in that, The liquid volume detection assembly (400) includes: A visual liquid volume detection member, arranged on the refrigerant transfer assembly (200) or / and the condenser (130); Or / and; A liquid level detection member, installed on the condenser (130) for detecting the liquid level of the condenser (130).

9. The refrigeration device according to any one of claims 1 to 8, characterized in that, Further comprising: A control assembly, the control assembly is electrically connected to the refrigerant circulation system and the refrigerant transfer assembly (200), and the control assembly is used to control the refrigerant transfer assembly (200) and the refrigerant circulation system to connect the condensers (130) of any two refrigerant circulation systems, and transfer the refrigerant of one condenser (130) to another condenser (130).

10. A chiller, characterized in that, Including the refrigeration equipment according to any one of claims 1 to 9.

11. A control method for a refrigeration device, characterized in that, For the refrigeration equipment according to any one of claims 1 to 9, or for the chiller according to claim 10, the control method of the refrigeration equipment includes: Outputting a refrigerant transfer control instruction to control the refrigerant transmission component (200) and the refrigerant circulation system, so that the condensers (130) of any two of the refrigerant circulation systems are connected, and transferring the refrigerant of one condenser (130) to another condenser (130).

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