CN216744976U - Heat exchange system capable of switching modes - Google Patents
Heat exchange system capable of switching modes Download PDFInfo
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- CN216744976U CN216744976U CN202122706017.7U CN202122706017U CN216744976U CN 216744976 U CN216744976 U CN 216744976U CN 202122706017 U CN202122706017 U CN 202122706017U CN 216744976 U CN216744976 U CN 216744976U
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Abstract
The utility model discloses a mode-switchable heat exchange system, which comprises a compressor, a condenser, a fluorine barrel, a heat exchanger, a first pipeline and a second pipeline, wherein the condenser is arranged in the condenser; the compressor, the condenser and the fluorine barrel are connected in a circulating mode to form a first cycle, the first cycle can be used for refrigerant circulation, the fluorine barrel is connected with the compressor through a second regulating valve, and the condenser is connected with the fluorine barrel through a first regulating valve; the first pipeline is connected with the outlet of the compressor through a fourth regulating valve, connected with the outlet of the condenser through a fifth regulating valve and connected with the outlet of the fluorine barrel through a sixth regulating valve, and the second pipeline is connected with the inlet of the compressor through a seventh regulating valve and connected with the inlet of the fluorine barrel through an eighth regulating valve; two ends of the heat exchanger are connected with the first pipeline and the second pipeline through the switching element, and a ninth regulating valve is further arranged at one end of the heat exchanger. The utility model adopts a set of multi-mode refrigerating system, and can switch the cooling and heating modes of the heat exchanger according to the working condition requirements.
Description
Technical Field
The utility model relates to the field of refrigeration systems, in particular to a heat exchange system with switchable modes.
Background
In the existing air-conditioning laboratory, an independent refrigerating system is generally arranged outside the indoor part and the outdoor part, and the independent refrigerating system can be used for regulating and controlling the temperature of the laboratory.
However, the existing air-conditioning laboratory refrigeration system has a small temperature control range, cannot be freely switched between low-temperature circulation and high-temperature circulation, and cannot meet various working condition requirements of a laboratory.
Therefore, a technical solution capable of overcoming the above problems is required.
SUMMERY OF THE UTILITY MODEL
In order to remedy some of the drawbacks of the prior art, it is an object of the present invention to provide a switchable mode heat exchange system.
In order to achieve the purpose, the utility model adopts the following technical scheme: a switchable mode heat exchange system comprising:
the system comprises a compressor, a condenser, a fluorine barrel, a heat exchanger, a first pipeline and a second pipeline;
the compressor, the condenser and the fluorine barrel are connected in a circulating mode to form a first cycle, the first cycle can be used for refrigerant circulation, the fluorine barrel is connected with the compressor through a second regulating valve, and the condenser is connected with the fluorine barrel through a first regulating valve;
the first pipeline is connected with the outlet of the compressor through a fourth regulating valve, connected with the outlet of the condenser through a fifth regulating valve and connected with the outlet of the fluorine barrel through a sixth regulating valve, and the second pipeline is connected with the inlet of the compressor through a seventh regulating valve and connected with the inlet of the fluorine barrel through an eighth regulating valve;
the two ends of the heat exchanger are connected with the first pipeline and the second pipeline through the switching element, and a ninth regulating valve is further arranged at one end of the heat exchanger.
The utility model has the following effects: the heat exchanger is connected with different positions on the first cycle through the plurality of regulating valves, the positions of the refrigerants entering the heat exchanger or outputting the heat exchanger can be controlled by switching the different regulating valves, so that the heat exchange process of the heat exchanger can be diversified, the flow direction switching is carried out through the switching element, the ninth regulating valve can be ensured to always work in a liquid phase pipe area no matter in a refrigerating or heating mode, and the regulating precision of the valve is ensured.
In some embodiments, the switching element is a four-way valve, and the four-way valve is respectively connected with the first pipeline, the second pipeline and two ends of the heat exchanger. Therefore, the heat exchanger is connected to the first cycle through the four-way valve, so that the refrigerant can enter the heat exchanger at different positions of the heat exchanger, and the heat exchanger can convert a heat exchange mode.
In some embodiments, the switching element comprises a first three-way valve and a second three-way valve, one end of the heat exchanger is connected to the first and second conduits respectively through the first three-way valve, and the other end of the heat exchanger is connected to the first and second conduits respectively through the second three-way valve. Therefore, the heat exchanger can be switched and connected with different positions on the first cycle through the two three-way valves, so that the refrigerant can enter the heat exchanger at different positions of the heat exchanger, and the heat exchanger can switch the heat exchange mode.
In some embodiments, the switching element includes a first two-way valve and a second two-way valve, one end of the heat exchanger provided with the ninth regulating valve is connected with the first pipe through the first two-way valve, and the other end of the heat exchanger is connected with the second pipe through the second two-way valve. Thus, the heat exchanger is connected to the first cycle through the two-way valves, and the refrigerant in the first cycle can flow to the heat exchanger to perform cooling.
In some embodiments, the switching element includes a third two-way valve and a fourth two-way valve, one end of the heat exchanger provided with the ninth regulating valve is connected with the second pipeline through the third two-way valve, and the other end of the heat exchanger is connected with the first pipeline through the fourth two-way valve. Therefore, the two-way valves are connected to the first cycle, so that hot gas on the compressor flows to the heat exchanger, and the heat exchanger can heat.
In some embodiments, the fluorine barrel is provided with a gas phase area and a liquid phase area, the heat exchanger is connected with the outlet of the liquid phase area of the fluorine barrel through a sixth regulating valve, and the heat exchanger is connected with the inlet of the gas phase area of the fluorine barrel through an eighth regulating valve. Therefore, the refrigerant after heat exchange in the heat exchanger can flow back to the gas phase area of the fluorine barrel, and the refrigerant in the liquid phase area in the fluorine barrel can flow into the heat exchanger to carry out deep cooling in the heat exchanger.
In some embodiments, the eighth regulator valve is a one-way valve. Therefore, the refrigerant can only flow in one direction between the heat exchanger and the fluorine barrel gas phase area, and the refrigerant in the fluorine barrel gas phase area can not flow back into the heat exchanger to cause convection.
In some embodiments, the compressor, the condenser and the fluorine barrel are cyclically connected to form a first cycle, the condenser is connected to the inlet of the gas phase zone of the fluorine barrel, and the compressor is connected to the outlet of the gas phase zone of the fluorine barrel. Therefore, the refrigerant circulating on the first cycle circulates in the gas phase area on the fluorine barrel, and the heat exchange of the heat exchanger in a low-temperature environment or a medium-temperature environment is met.
In some embodiments, a first regulating valve is disposed between the condenser and the inlet of the vapor zone of the fluorine drum. Thereby, the flux of the refrigerant flowing from the condenser into the fluorine tank can be controlled by the first regulating valve.
In some embodiments, the fluorine barrel is provided with a pressure sensor for detecting the pressure in the fluorine barrel, a third regulating valve is further arranged between the compressor and the fluorine barrel, the controller is connected with the third regulating valve and the pressure sensor, and the controller can receive the pressure sensor to feed back the pressure of the fluorine barrel, so that the opening and closing amount of the third regulating valve is controlled according to the pressure condition of the fluorine barrel. Therefore, the controller receives the pressure data of the fluorine barrel transmitted by the pressure sensor on the fluorine barrel, the opening degree of the third regulating valve is controlled by the controller, the compressor can be controlled to convey refrigerant hot gas into the fluorine barrel, the pressure stability of the fluorine barrel is maintained, and the refrigerating capacity and the load of the unit can be ensured to be consistent all the time
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic structural diagram of a switchable heat exchange system according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a switchable heat exchange system according to a second embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a switchable heat exchange system according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a switchable heat exchange system in a fourth embodiment of the present invention.
In the figure: 1. a compressor; 2. a condenser; 3. a fluorine barrel; 31. a gas phase region; 32. a liquid phase region; 4. a heat exchanger; 5. a controller; 6. a first regulating valve; 7. a second regulating valve; 8. a pressure sensor; 9. a third regulating valve; 10. a first conduit; 11. a second conduit; 12. a fourth regulating valve; 13. a fifth regulating valve; 14. a sixth regulating valve; 15. a seventh regulating valve; 16. an eighth regulating valve; 17. a ninth regulating valve; 18. a four-way valve; 19. a first three-way valve; 20. a second three-way valve; 21. a first two-way valve; 22. a second two-way valve; 23. a third two-way valve; 24. a fourth two-way valve.
Detailed Description
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
This embodiment is briefly described as follows:
the first embodiment is as follows:
fig. 1 is a schematic view of the overall structure of a switchable heat exchange system of the present invention.
As shown in fig. 1, a heat exchange system capable of switching modes comprises a compressor 1, a condenser 2, a fluorine barrel 3, a heat exchanger 4, a first pipeline 10 and a second pipeline 11, wherein the compressor 1, the condenser 2 and the fluorine barrel 3 are connected in a circulating manner to form a first cycle, the first cycle can be used for refrigerant circulation, the fluorine barrel 3 is connected with the compressor 1 through a second regulating valve 7, and the condenser 2 is connected with the fluorine barrel 3 through a first regulating valve 6; the first pipeline 10 is connected with the outlet of the compressor 1 through a fourth regulating valve 12, connected with the outlet of the condenser 2 through a fifth regulating valve 13 and connected with the outlet of the fluorine barrel 3 through a sixth regulating valve 14, and the second pipeline 11 is connected with the inlet of the compressor 1 through a seventh regulating valve 15 and connected with the inlet of the fluorine barrel 3 through an eighth regulating valve 16; the two ends of the heat exchanger 4 are connected with the first pipeline 10 and the second pipeline 11 through the switching elements, a ninth adjusting valve 17 is further arranged at one end of the heat exchanger 4, the flow of entering of the refrigerant can be controlled through the ninth adjusting valve 17, the adjustment of the heat exchange capacity is completed, the heat exchange system with the switchable modes can control the position of the refrigerant entering the heat exchanger 4 or outputting the heat exchanger 4 through different adjusting valves of the switch, and the heat exchange process of the heat exchanger 4 can be diversified.
Preferably, the fluorine tank fluorine generating device further comprises a controller 5, wherein a pressure sensor 8 is arranged on the fluorine tank 3, and the pressure sensor 8 can be used for detecting the pressure in the fluorine tank 3; a third regulating valve 9 is also arranged between the compressor 1 and the fluorine barrel 3, the compressor 1 and the fluorine barrel 3 can be communicated through the third regulating valve 9, and the third regulating valve 9 can control the flow between the compressor 1 and the fluorine barrel 3; the controller 5 is connected with a third regulating valve 9 and a pressure sensor 8, the controller 5 can control the opening degree of the third regulating valve 9, the controller 5 can receive pressure data of the fluorine barrel 3 transmitted by the pressure sensor 8 on the fluorine barrel 3, the opening degree of the third regulating valve 9 is controlled by the controller 5, and the compressor 1 can be controlled to convey hot gas into the fluorine barrel 3. The pressure of the fluorine barrel 3 is maintained to be stable, the refrigerating capacity of the unit can be ensured to be consistent with the load all the time, the pressure difference between the condenser 2 and the fluorine tank is utilized to form a refrigerant supply power source for the indoor and outdoor heat exchangers, and the maintenance difficulty caused by the use of a fluorine pump is avoided.
Preferably, in some embodiments, when the refrigerant is stored in the fluorine barrel 3, the liquid refrigerant is located at the bottom of the fluorine barrel 3, the gaseous refrigerant is located at the top of the fluorine barrel 3, so that the fluorine barrel 3 has a gas phase region 31 and a liquid phase region 32, the heat exchanger 4 is connected with the outlet of the liquid phase region 32 of the fluorine barrel 3 through the sixth regulating valve 14, the heat exchanger 4 is connected with the inlet of the gas phase region 31 of the fluorine barrel 3 through the eighth regulating valve 16, so that the refrigerant after heat exchange in the heat exchanger 4 can flow back to the gas phase region 31 of the fluorine barrel 3, the refrigerant in the liquid phase region 32 of the fluorine barrel 3 can flow into the heat exchanger 4, and deep cooling is performed in the heat exchanger 4. The first regulating valve 6 is provided between the condenser 2 and the inlet of the gas phase zone 31 of the fluorine tank 3 so that the flux of the refrigerant flowing from the condenser 2 into the fluorine tank 3 can be controlled by the first regulating valve 6.
Preferably, in the present embodiment, the eighth regulating valve 16 is a one-way valve, so that the refrigerant can only flow in one direction between the heat exchanger 4 and the gas phase zone 31 of the fluorine barrel 3, and the refrigerant in the gas phase zone 31 of the fluorine barrel 3 cannot flow back into the heat exchanger 4 to cause convection.
Preferably, in the present embodiment, when the compressor 1, the condenser 2 and the fluorine drum 3 are connected in a circulating manner to form the first cycle, the condenser 2 is connected to the inlet of the gas phase zone 31 of the fluorine drum 3, and the compressor 1 is connected to the outlet of the gas phase zone 31 of the fluorine drum 3, so that the refrigerant circulating on the first cycle circulates in the gas phase zone 31 of the fluorine drum 3, thereby satisfying the heat exchange of the heat exchanger 4 in a low-temperature or medium-temperature environment.
Specifically, in the present embodiment, the switching element is a four-way valve 18, the four-way valve 18 is respectively connected to the first pipeline 10, the second pipeline 11 and the two ends of the heat exchanger 4, and when the heat exchange system with switchable modes is used, the switching among the medium-temperature cooling mode, the heating mode, the low-temperature cooling mode and the low-temperature deep cooling mode can be performed:
medium-temperature cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating the four-way valve 18, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11, the second regulating valve 7, the fifth regulating valve 13, the eighth regulating valve 16 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the seventh regulating valve 15 are closed, the refrigerant is condensed by the condenser 2 and then flows from the fifth regulating valve 13 to the heat exchanger 4, during the period, the pressure can be reduced by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant carries out heat exchange refrigeration on the heat exchanger 4, the refrigerant after heat exchange of the heat exchanger 4 is vaporized and then flows to a gas phase area 31 of the fluorine barrel 3 by the eighth regulating valve 16, the refrigerant in the gas phase area 31 of the fluorine barrel 3 flows to the compressor 1 by the second regulating valve 7, the refrigerant is compressed into a high-temperature and high-heat gas state by the compressor 1, the gaseous refrigerant with high temperature and high heat is sent to the condenser 2 to be condensed, and then the medium temperature refrigeration cycle process can be completed, and in the process, the ninth regulating valve 17 can control the flow of the refrigerant, and the heat exchange capacity of the heat exchanger 4 is changed.
A heating mode: through the adjustment four-way valve 18, one end of the heat exchanger 4 provided with a ninth adjusting valve 17 is communicated with the second pipeline 11, the other end of the heat exchanger 4 not provided with the ninth adjusting valve 17 is communicated with the first pipeline 10, the second adjusting valve 7, the fourth adjusting valve 12, the eighth adjusting valve 16 and the ninth adjusting valve 17 are opened, the first adjusting valve 6, the fifth adjusting valve 13, the sixth adjusting valve 14 and the seventh adjusting valve 15 are closed, high-temperature high-pressure gaseous refrigerant compressed by the compressor 1 is conveyed to the heat exchanger 4 through the second pipeline 11 for heat exchange, heat is released and condensed on the gaseous refrigerant heat exchanger 4, the refrigerant passes through the ninth adjusting valve 17 for pressure reduction and flows to a gas phase area 31 of the fluorine barrel 3, the refrigerant in the gas phase area 31 of the fluorine barrel 3 flows to the compressor 1 through the second adjusting valve 7, and the refrigerant passes through the compressor 1 for high-temperature compression to be in a high-temperature gaseous state to complete a heat supply mode cycle process.
Low-temperature cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating a four-way valve 18, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11, the second regulating valve 7, the fifth regulating valve 13, the seventh regulating valve 15 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the eighth regulating valve 16 are closed, the refrigerant is condensed by the condenser 2 and then flows to the heat exchanger 4 from the fifth regulating valve 13, during the period, the pressure can be reduced by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant exchanges heat and refrigerates on the heat exchanger 4, the refrigerant after heat exchange of the heat exchanger 4 is vaporized and then flows to the compressor 1 by the seventh regulating valve 15, the refrigerant is compressed into a high-temperature and high-heat gas state by the compressor 1, the high-temperature and high heat gas state refrigerant is sent to the condenser 2 to be condensed, and the medium-temperature refrigerating cycle process can be completed, and in the process, the ninth regulating valve 17 can control the flow of the refrigerant to change the heat exchange capacity of the heat exchanger 4.
A low-temperature deep cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating a four-way valve 18, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11, a first regulating valve 6, a sixth regulating valve 14, a seventh regulating valve 15 and the ninth regulating valve 17 are opened, a second regulating valve 7, a fourth regulating valve 12, a sixth regulating valve 14 and an eighth regulating valve 16 are closed, the refrigerant in a liquid phase region 32 of the fluorine barrel 3 flows to the heat exchanger 4 through the sixth regulating valve 14, during the period, the refrigerant can be reduced in pressure through the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant carries out heat exchange and refrigeration on the heat exchanger 4, the refrigerant after heat exchange of the heat exchanger 4 is vaporized and flows to the compressor 1 through the seventh regulating valve 15, the refrigerant is compressed into a high-temperature and high-heat gaseous state through the compressor 1, the high-temperature and high heat gaseous state refrigerant is sent to the condenser 2 to be condensed and then sent back to the fluorine barrel 3, the liquid refrigerant in the fluorine barrel 3 is precipitated in the liquid phase area 32 at the bottom of the fluorine barrel 3, and then the low-temperature deep cooling circulation process can be completed, and compared with the low-temperature cold supply mode, after the low-temperature deep cooling mode is switched to the low-temperature cold supply mode, the liquid refrigerant in the liquid phase area 32 in the fluorine barrel is directly cooled by the heat exchanger 4, so that the cooling effect is better, the liquid supply temperature can be reduced by 10-20K, the inlet dryness of the heat exchanger 4 is reduced, and the heat exchange efficiency of the heat exchanger 4 can be improved.
The second embodiment:
referring to fig. 2, the present embodiment provides a heat exchange system with switchable modes, and the difference between the present embodiment and the second embodiment is as follows: in the present embodiment, the switching element includes a first three-way valve 19 and a second three-way valve 20, and the mode-switchable heat exchange system of the present embodiment can perform switching among a medium-temperature cooling mode, a low-temperature cooling mode, a heating mode, and a low-temperature deep cooling mode when used.
Specifically, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is connected to the first pipe 10 and the second pipe 11 through the first three-way valve 19, respectively, and the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is connected to the first pipe 10 and the second pipe 11 through the second three-way valve, respectively. Or, in some other embodiments, the heat exchanger 4 may also be connected to the first pipeline 10 and the second pipeline 11 through a second three-way valve at the end provided with the ninth regulating valve 17, and the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is connected to the first pipeline 10 and the second pipeline 11 through a first three-way valve 19.
When the heat exchange system with switchable modes in the embodiment is used:
medium-temperature cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating a first three-way valve 19, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is not communicated with the second pipeline 11, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11 by regulating a second three-way valve 20, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is not communicated with the first pipeline 10, the second regulating valve 7, the fifth regulating valve 13, the eighth regulating valve 16 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the seventh regulating valve 15 are closed, the refrigerant is condensed by the condenser 2 and then flows to the heat exchanger 4 from the fifth regulating valve 13, during the period, the pressure can be reduced by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant carries out heat exchange refrigeration on the heat exchanger 4, the refrigerant after heat exchange by the heat of the heat exchanger 4 is evaporated and then flows to a gas phase area 31 of the fluorine barrel 3 by the eighth regulating valve 16, the refrigerant in the gas phase zone 31 of the fluorine barrel 3 flows to the compressor 1 through the second regulating valve 7, the refrigerant is compressed into a high-temperature high-heat gas state through the compressor 1, the high-temperature high-heat gas refrigerant is sent to the condenser 2 to be condensed, and then the medium-temperature refrigeration cycle process can be completed, and in the process, the flow of the refrigerant can be controlled through the ninth regulating valve 17, so that the heat exchange capacity of the heat exchanger 4 can be changed.
A heating mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the second pipeline 11 by regulating the first three-way valve 19, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is not communicated with the first pipeline 10, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the first pipeline 10 by regulating the second three-way valve 20, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is not communicated with the second pipeline 11, the second regulating valve 7, the fourth regulating valve 12, the eighth regulating valve 16 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fifth regulating valve 13, the sixth regulating valve 14 and the seventh regulating valve 15 are closed, the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 is conveyed to the heat exchanger 4 through the second pipeline 11 for heat exchange, heat is released and condensed on the gaseous refrigerant heat exchanger 4, and is depressurized through the ninth regulating valve 17 to flow to the gas phase area 31 of the fluorine barrel 3, the refrigerant in the gas phase zone 31 of the fluorine barrel 3 flows to the compressor 1 through the second regulating valve 7, and the refrigerant is compressed into a high-temperature and high-heat gas state through the compressor 1 to complete the heat supply mode cycle process.
Low-temperature cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating a first three-way valve 19, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is not communicated with the second pipeline 11, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11 by regulating a second three-way valve 20, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is not communicated with the first pipeline 10, the second regulating valve 7, the fifth regulating valve 13, the seventh regulating valve 15 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the eighth regulating valve 16 are closed, the refrigerant is condensed by the condenser 2 and then flows to the heat exchanger 4 from the fifth regulating valve 13, during the period, the pressure can be reduced by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant carries out heat exchange refrigeration on the heat exchanger 4, the refrigerant after heat exchange is evaporated by the heat exchanger 4 and then flows to the compressor 1 by the seventh regulating valve 15, the refrigerant is compressed into a high-temperature high-heat gas state by the compressor 1, the high-temperature high-heat gas state refrigerant is sent to the condenser 2 to be condensed, and then the medium-temperature refrigeration cycle process can be completed, and in the process, the flow of the refrigerant can be controlled by the ninth adjusting valve 17, so that the heat exchange capacity of the heat exchanger 4 is changed.
A low-temperature deep cooling mode: one end of the heat exchanger 4 provided with a ninth regulating valve 17 is communicated with the first pipeline 10 by regulating a first three-way valve 19, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is not communicated with the second pipeline 11, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipeline 11 by regulating a second three-way valve 20, the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is not communicated with the first pipeline 10, the first regulating valve 6, the sixth regulating valve 14, the seventh regulating valve 15 and the ninth regulating valve 17 are opened, the second regulating valve 7, the fourth regulating valve 12, the sixth regulating valve 14 and the eighth regulating valve 16 are closed, the refrigerant in the liquid phase region 32 of the fluorine barrel 3 flows to the heat exchanger 4 through the sixth regulating valve 14, during the period, the pressure can be reduced through the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant performs heat exchange and refrigeration on the heat exchanger 4, the refrigerant after heat exchange of the heat exchanger 4 is vaporized and flows to the compressor 1 through the seventh regulating valve 15, the refrigerant is compressed into a high-temperature high-heat gas state through the compressor 1, the high-temperature high-heat gas state refrigerant is sent to the condenser 2 for condensation and then sent back to the fluorine barrel 3, the liquid refrigerant in the fluorine barrel 3 is precipitated in the liquid phase area 32 at the bottom of the fluorine barrel 3, and therefore the low-temperature deep cooling circulation process can be completed, compared with the low-temperature cold supply mode, the low-temperature deep cooling mode is switched to the mode, the heat exchanger 4 is directly cooled by the liquid refrigerant in the liquid phase area 32 in the fluorine barrel, the refrigerating effect is better, the liquid supply temperature can be reduced by 10-20K, the inlet dryness of the heat exchanger 4 is reduced, and the heat exchange efficiency of the heat exchanger 4 can be improved.
The first circulation connection structure and the heat exchanger 4 in the mode-switchable heat exchange system in this embodiment are the same as those in the first embodiment, and are not described herein again.
The third embodiment is as follows:
referring to fig. 3, the present embodiment provides a heat exchange system with switchable modes, and the difference between the present embodiment and the second embodiment is as follows: in the present embodiment, the switching elements include the first two-way valve 21 and the second two-way valve 22, and when the heat exchange system with the switchable mode in the present embodiment is used, the switching among the medium-temperature cooling mode, the low-temperature cooling mode, and the low-temperature deep cooling mode can be performed.
Specifically, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is connected to the first pipe 10 through the first two-way valve 21, the other end of the heat exchanger 4 is connected to the second pipe 11 through the second two-way valve 22, one end of the heat exchanger 4 provided with the ninth regulating valve 17 is communicated with the first pipe 10 through the first two-way valve 21, and the other end of the heat exchanger 4 not provided with the ninth regulating valve 17 is communicated with the second pipe 11 through the second two-way valve 22.
When the heat exchange system with switchable modes in the embodiment is used:
medium-temperature cooling mode: the second regulating valve 7, the fifth regulating valve 13, the eighth regulating valve 16 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the seventh regulating valve 15 are closed, so that the refrigerant is condensed by the condenser 2 and then flows from the fifth regulating valve 13 to the heat exchanger 4, during the period, the refrigerant can be decompressed by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant performs heat exchange and refrigeration on the heat exchanger 4, the refrigerant after the heat exchange of the heat exchanger 4 is vaporized and flows to the gas phase area 31 of the fluorine barrel 3 through the eighth regulating valve 16, the refrigerant in the gas phase area 31 of the fluorine barrel 3 flows to the compressor 1 through the second regulating valve 7, the refrigerant is compressed into a high-temperature and high-heat gas state by the compressor 1, the high-temperature and high-heat gas refrigerant is condensed in the condenser 2 to complete the medium-temperature refrigeration cycle process, and the flow of the refrigerant can be controlled by the ninth regulating valve 17 in the process, the heat exchange capacity of the heat exchanger 4 is changed.
Low-temperature cooling mode: the second regulating valve 7, the fifth regulating valve 13, the seventh regulating valve 15 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fourth regulating valve 12, the sixth regulating valve 14 and the eighth regulating valve 16 are closed, so that the refrigerant is condensed by the condenser 2 and then flows from the fifth regulating valve 13 to the heat exchanger 4, during the period, the refrigerant can be depressurized by the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant performs heat exchange and refrigeration on the heat exchanger 4, the refrigerant after heat exchange of the heat exchanger 4 is vaporized and flows to the compressor 1 through the seventh regulating valve 15, the refrigerant is compressed into a high-temperature high-heat gas state by the compressor 1, the high-temperature high-heat gas refrigerant is sent to the condenser 2 to be condensed, and then the medium-temperature refrigeration cycle process can be completed, and in the process, the ninth regulating valve 17 can control the flow of the refrigerant, and the heat exchange capacity of the heat exchanger 4 can be changed.
A low-temperature deep cooling mode: the first regulating valve 6, the sixth regulating valve 14, the seventh regulating valve 15 and the ninth regulating valve 17 are opened, the second regulating valve 7, the fourth regulating valve 12, the sixth regulating valve 14 and the eighth regulating valve 16 are closed, the refrigerant in the liquid phase area 32 of the fluorine barrel 3 flows to the heat exchanger 4 through the sixth regulating valve 14, during the period, the refrigerant can be decompressed through the ninth regulating valve 17 and then flows into the heat exchanger 4, the refrigerant performs heat exchange and refrigeration on the heat exchanger 4, the refrigerant after the heat exchange of the heat exchanger 4 is vaporized and flows to the compressor 1 through the seventh regulating valve 15, the refrigerant is compressed into high-temperature and high-heat gas state through the compressor 1, the high-temperature and high-heat gas refrigerant is sent to the condenser 2 to be condensed and then sent back to the fluorine barrel 3, the liquid refrigerant in the fluorine barrel 3 is precipitated in the liquid phase area 32 at the bottom of the fluorine barrel 3, and a low-temperature and deep-cooling cycle process can be completed, compared with a low-temperature and deep cooling mode, after the mode is switched, the liquid refrigerant in the liquid phase area 32 in the fluorine tank is directly used for refrigerating by the heat exchanger 4, the refrigerating effect is better, the liquid supply temperature can be reduced by 10-20K, the dryness of the inlet of the heat exchanger 4 is reduced, and the heat exchange efficiency of the heat exchanger 4 can be improved.
The heat exchange systems in this embodiment are the same as those in the first embodiment, and are not described herein again.
The fourth embodiment is as follows:
referring to fig. 4, the present embodiment provides a heat exchange system with switchable modes, and the difference between the present embodiment and the second embodiment is as follows: in the present embodiment, the switching elements include a third two-way valve 23 and a fourth two-way valve 24, and the heat exchange system capable of switching the modes in the present embodiment is used to perform the heating mode.
Specifically, one end of the heat exchanger 4, which is provided with the ninth regulating valve 17, is connected to the second pipeline 11 through the third two-way valve 23, the other end of the heat exchanger 4 is connected to the first pipeline 10 through the fourth two-way valve 24, the end of the heat exchanger 4, which is provided with the ninth regulating valve 17, is communicated with the second pipeline 11 through the third two-way valve 23, and the other end of the heat exchanger 4, which is not provided with the ninth regulating valve 17, is communicated with the first pipeline 10 through the fourth two-way valve 24.
When the heat exchange system with switchable modes in the embodiment is used:
a heating mode: the second regulating valve 7, the fourth regulating valve 12, the eighth regulating valve 16 and the ninth regulating valve 17 are opened, the first regulating valve 6, the fifth regulating valve 13, the sixth regulating valve 14 and the seventh regulating valve 15 are closed, the high-temperature and high-pressure gaseous refrigerant compressed by the compressor 1 is conveyed to the heat exchanger 4 through the second pipeline 11 for heat exchange, heat is released and condensed on the gaseous refrigerant heat exchanger 4, the refrigerant is subjected to pressure reduction through the ninth regulating valve 17 and flows to the gas phase area 31 of the fluorine barrel 3, the refrigerant in the gas phase area 31 of the fluorine barrel 3 flows to the compressor 1 through the second regulating valve 7, and the refrigerant is compressed into a high-temperature and high-heat gaseous state through the compressor 1 to complete the heat supply mode cycle process.
The heat exchange systems in this embodiment are the same as those in the first embodiment, and are not described herein again.
The heat exchanger is connected with different positions on the first cycle through the plurality of regulating valves, the positions of the refrigerants entering the heat exchanger or outputting the heat exchanger can be controlled through switching the different regulating valves, so that the heat exchange process of the heat exchanger can be diversified, the flow direction switching is carried out through the switching element, the ninth regulating valve can be ensured to always work in a liquid phase pipe area no matter in a refrigerating or heating mode, and the regulating precision of the valve is ensured.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the utility model.
Claims (10)
1. A switchable mode heat exchange system, comprising:
the system comprises a compressor, a condenser, a fluorine barrel, a heat exchanger, a first pipeline and a second pipeline;
the compressor, the condenser and the fluorine barrel are connected in a circulating mode to form a first cycle, the first cycle can be used for refrigerant circulation, the fluorine barrel is connected with the compressor through a second regulating valve, and the condenser is connected with the fluorine barrel through a first regulating valve;
the first pipeline is connected with the outlet of the compressor through a fourth regulating valve, connected with the outlet of the condenser through a fifth regulating valve and connected with the outlet of the fluorine barrel through a sixth regulating valve, and the second pipeline is connected with the inlet of the compressor through a seventh regulating valve and connected with the inlet of the fluorine barrel through an eighth regulating valve;
and two ends of the heat exchanger are connected with the first pipeline and the second pipeline through switching elements, and a ninth regulating valve is further arranged at one end of the heat exchanger.
2. The switchable mode heat exchange system of claim 1, wherein the switching element is a four-way valve, and the four-way valve connects the first pipe, the second pipe and two ends of the heat exchanger, respectively.
3. The switchable mode heat exchange system of claim 1, wherein the switching element comprises a first three-way valve and a second three-way valve, one end of the heat exchanger is connected to the first pipe and the second pipe through the first three-way valve, respectively, and the other end of the heat exchanger is connected to the first pipe and the second pipe through the second three-way valve, respectively.
4. The switchable heat exchange system of claim 1, wherein the switching element comprises a first two-way valve and a second two-way valve, one end of the heat exchanger provided with a ninth regulating valve is connected with the first pipe through the first two-way valve, and the other end of the heat exchanger is connected with the second pipe through the second two-way valve.
5. The switchable heat exchange system of claim 1, wherein the switching element comprises a third two-way valve and a fourth two-way valve, one end of the heat exchanger provided with a ninth regulating valve is connected with the second pipeline through the third two-way valve, and the other end of the heat exchanger is connected with the first pipeline through the fourth two-way valve.
6. The switchable mode heat exchange system of any one of claims 1 to 5, wherein the fluorine barrel is provided with a gas phase region and a liquid phase region, the heat exchanger is connected with an outlet of the liquid phase region of the fluorine barrel through the sixth regulating valve, and the heat exchanger is connected with an inlet of the gas phase region of the fluorine barrel through the eighth regulating valve.
7. The switchable mode heat exchange system of claim 6, wherein the eighth regulating valve is a one-way valve.
8. The switchable heat exchange system of claim 6, wherein when the compressor, the condenser and the fluorine barrel are cyclically connected to form a first cycle, the condenser is connected to an inlet of the gas phase zone of the fluorine barrel, and the compressor is connected to an outlet of the gas phase zone of the fluorine barrel.
9. The switchable mode heat exchange system of claim 8, wherein the first regulating valve is disposed between the condenser and an inlet of the fluorine drum vapor zone.
10. The switchable heat exchange system of claim 8, further comprising a controller, wherein the fluorine tank is provided with a pressure sensor for detecting a pressure in the fluorine tank, a third regulating valve is further arranged between the compressor and the fluorine tank, the controller is connected to the third regulating valve and the pressure sensor, and the controller can receive a pressure sensor to feed back a pressure of the fluorine tank, so as to control an opening and closing amount of the third regulating valve according to a pressure condition of the fluorine tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122706017.7U CN216744976U (en) | 2021-11-05 | 2021-11-05 | Heat exchange system capable of switching modes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122706017.7U CN216744976U (en) | 2021-11-05 | 2021-11-05 | Heat exchange system capable of switching modes |
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| CN216744976U true CN216744976U (en) | 2022-06-14 |
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