CN216620334U - Refrigerating system capable of delaying water scaling of evaporative condenser coil - Google Patents
Refrigerating system capable of delaying water scaling of evaporative condenser coil Download PDFInfo
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- CN216620334U CN216620334U CN202122770321.8U CN202122770321U CN216620334U CN 216620334 U CN216620334 U CN 216620334U CN 202122770321 U CN202122770321 U CN 202122770321U CN 216620334 U CN216620334 U CN 216620334U
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Abstract
The utility model relates to the technical field of refrigeration, and provides a refrigeration system capable of delaying water scaling of a coil pipe of an evaporative condenser. The compressor is connected with a cooling side inlet of the precooler, a cooling side outlet of the precooler is connected with the evaporative condenser, the evaporative condenser is connected with a liquid inlet of the siphon tank, a cooling liquid outlet of the siphon tank is connected with an evaporation side inlet of the precooler through the electromagnetic valve, an evaporation side outlet of the precooler is connected with a gas return port of the siphon tank, a gas outlet of the siphon tank is connected with an inlet of the evaporative condenser, a refrigeration liquid outlet of the siphon tank is connected with an inlet of the evaporator through the expansion valve, and an outlet of the evaporator is connected with a gas inlet end of the compressor; the precooler enables the temperature of the refrigerant entering the coil of the evaporative condenser to be lower, and the outer wall of the heat exchange tube is not easy to form scale, so that the heat exchange efficiency of the evaporative condenser and the refrigeration efficiency of a refrigeration system are improved.
Description
Technical Field
The utility model relates to the technical field of refrigeration, in particular to a refrigeration system capable of delaying water scaling of an evaporative condenser coil.
Background
The condenser is one of the main heat exchange devices of the refrigeration system, and a high-temperature and high-pressure refrigerant is condensed into a high-pressure liquid state through the condenser. Condensers are classified into three types: the evaporative condenser is a type of air and water combined cooling condenser, and cools and condenses refrigerant by using water vaporization latent heat.
The evaporative condenser has the advantages of water saving, electricity saving, compact structure, small occupied area and the like, and is widely applied to large-scale industrial refrigeration systems. However, because the cooling water used by the evaporative condenser is not pure water, but tap water or underground well water rich in certain metal ions, during the heat exchange process, the water in the cooling water absorbs heat and is rapidly evaporated to form water vapor, and the metal ions in the water are easily attached to the outer surface of the coil of the evaporative condenser to form scale. The scale causes the heat exchange efficiency of the evaporative condenser to be reduced, thereby increasing the energy consumption of the refrigeration system.
In the prior art, in order to prevent the formation of scale of an evaporative condenser, water treatment equipment is mainly added to purify cooling water in advance. The water treatment device is divided into a medicament water treatment device and an electrochemical water treatment device, water treated by the medicament water treatment device has destructive influence on the environment, the stability of the electrical water treatment device is poor, and the purification quality of the water cannot meet the requirement. In addition, the addition of new equipment to the refrigeration system increases initial and operating costs and also occupies floor space of the machine room.
Wherein the evaporative condenser coil water fouling rate is directly related to the coil temperature. The heat exchange of the condenser is divided into a cooling process and a condensing process, because the refrigerant in the coil pipe is in an overheated state in the cooling process, the temperature of the refrigerant is relatively high, and the spray water of the evaporative condenser firstly contacts the coil pipe at the upper part of the evaporative condenser with a high-temperature refrigerant inlet, so that the phenomenon of water scaling of the coil pipe of the evaporative condenser at the part is common and difficult to control.
SUMMERY OF THE UTILITY MODEL
The utility model provides a refrigeration system capable of delaying water scaling of a coil of an evaporative condenser, which is used for solving the problem that scale is easily formed on the outer surface of the coil of the evaporative condenser in the prior art.
The utility model provides a refrigeration system capable of delaying water scaling of an evaporative condenser coil, which comprises: the system comprises an electromagnetic valve, a controller, an expansion valve, a siphon tank, an evaporator, a compressor, a precooler, a temperature sensor and an evaporative condenser;
the exhaust end of the compressor is connected with the cooling side inlet of the precooler, the cooling side outlet of the precooler is connected with the inlet of the evaporative condenser, the outlet of the evaporative condenser is connected with the liquid inlet of the siphon tank, the cooling liquid outlet of the siphon tank is connected with the evaporation side inlet of the precooler through the electromagnetic valve, the evaporation side outlet of the precooler is connected with the air return port of the siphon tank, the air outlet of the siphon tank is connected with the inlet of the evaporative condenser, the refrigeration liquid outlet of the siphon tank is connected with the inlet of the evaporator through the expansion valve, and the outlet of the evaporator is connected with the air inlet end of the compressor;
the temperature sensor is arranged at the inlet of the evaporative condenser, and the temperature sensor and the electromagnetic valve are both connected with the controller;
the controller controls the electromagnetic valve to be closed when the temperature of the temperature sensor is lower than a preset temperature, and controls the electromagnetic valve to be opened when the temperature of the temperature sensor is higher than the preset temperature.
According to the refrigeration system capable of delaying the water scaling of the coil pipe of the evaporative condenser, the electromagnetic valve is an electric valve or a manual switch valve.
According to the refrigeration system capable of delaying the water scaling of the coil pipe of the evaporative condenser, provided by the utility model, the expansion valve is an electronic expansion valve, a thermal expansion valve, a capillary tube or a pore plate throttling device.
According to the refrigeration system capable of delaying the scaling of the coil water of the evaporative condenser, the precooler is a plate heat exchanger, a shell-and-tube heat exchanger or a plate-and-shell heat exchanger.
According to the refrigeration system capable of delaying the water scaling of the coil pipe of the evaporative condenser, the compressor is a scroll compressor, a rotor compressor, a screw compressor or a piston compressor.
According to the refrigeration system capable of delaying the scaling of the coil pipe water of the evaporative condenser, the evaporative condenser is a blowing evaporative condenser, an air suction evaporative condenser, a tubular evaporative condenser, a plate evaporative condenser or a condenser with an air-cooling water spraying function.
According to the refrigeration system capable of delaying water scaling of the coil pipe of the evaporative condenser, the siphon tank is a buffer tank and a liquid storage tank which are arranged independently or is shared with an oil-cooled siphon tank of a compressor.
The refrigeration system capable of delaying the water scaling of the coil pipe of the evaporative condenser has the following effects: (1) the precooler is arranged between the refrigerant inlet end of the evaporative condenser and the exhaust end of the compressor, so that the refrigerant entering the coil of the evaporative condenser has low superheat degree and low temperature, the temperature difference between spray water and the coil on the upper side of the evaporative condenser is relatively small, scale is not easily formed on the outer wall of the heat exchange tube of the evaporative condenser, the heat exchange efficiency of the evaporative condenser is high, the refrigeration efficiency of a refrigeration system is high, and the operation cost is low; (2) the influence of quick scaling of the outer wall of the heat exchange pipeline of the evaporative condenser on the system energy efficiency can be fundamentally solved, the water resource environment is not influenced, and the scaling inhibition effect is stable; (3) the high-pressure liquid refrigerant in the refrigeration system is evaporated and absorbs heat in the precooler, so that the temperature of the refrigerant entering a coil of the evaporative condenser is reduced, water treatment equipment is not added, the initial investment of the system is reduced, and meanwhile, the ground plane area of a machine room is not occupied, so that the whole refrigeration system is compact in structure, and the occupied space of the machine room is small.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a refrigeration system for delaying water scaling in an evaporative condenser coil according to the present invention;
FIG. 2 is a schematic diagram of the configuration of a precooler provided by the present invention;
FIG. 3 is a schematic structural view of a siphon canister provided in accordance with the present invention;
reference numerals:
1: a compressor; 2: a precooler; 21: a cooling side inlet;
22: a cooling side outlet; 23: an evaporation side outlet; 24: an evaporation side inlet;
3: a siphon tank; 31: an air return port; 32: an air outlet;
33: a liquid inlet; 34: refrigerating the liquid outlet; 35: cooling the liquid outlet;
4: an evaporative condenser; 5: an electromagnetic valve; 6: an expansion valve;
7: an evaporator; 8: a temperature sensor; 9: and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
A refrigeration system of the present invention for retarding water fouling of evaporative condenser coils is described below with reference to fig. 1 to 3.
As shown in fig. 1, fig. 2 and fig. 3, the refrigeration system for delaying water scaling of an evaporative condenser coil according to the embodiment of the present invention comprises: solenoid valve 5, controller 9, expansion valve 6, siphon tank 3, evaporator 7, compressor 1, precooler 2, temperature sensor 8 and evaporative condenser 4.
As shown in fig. 2, the precooler 2 has a cooling-side inlet 21, a cooling-side outlet 22, an evaporation-side outlet 23, and an evaporation-side inlet 24.
As shown in fig. 3, the siphon tank 3 has a return air port 31, an air outlet port 32, an inlet port 33, a refrigerant outlet port 34, and a cooling outlet port 35.
The exhaust end of the compressor 1 is connected with the cooling side inlet 21 of the precooler 2, the cooling side outlet 22 of the precooler 2 is connected with the inlet of the evaporative condenser 4, the outlet of the evaporative condenser 4 is connected with the liquid inlet 33 of the siphon tank 3, the cooling liquid outlet 35 of the siphon tank 3 is connected with the evaporation side inlet 24 of the precooler 2 through the electromagnetic valve 5, the evaporation side outlet 23 of the precooler 2 is connected with the air return port 31 of the siphon tank 3, the air outlet 32 of the siphon tank 3 is connected with the inlet of the evaporative condenser 4, the refrigeration liquid outlet 34 of the siphon tank 3 is connected with the inlet of the evaporator 7 through the expansion valve 6, and the outlet of the evaporator 7 is connected with the air inlet end of the compressor 1.
The temperature sensor 8 is arranged at the inlet of the evaporative condenser 4, and both the temperature sensor 8 and the electromagnetic valve 5 are connected with the controller 9.
That is, the outlet 22 on the cooling side of the precooler 2 is connected to the inlet of the evaporative condenser 4 through a first pipe, the outlet 32 of the siphon tank 3 is connected to the first pipe through a second pipe, and the temperature sensor 8 is provided on the first pipe near the inlet of the evaporative condenser 4.
For example, the temperature sensor 8 is connected to the controller 9 through a first connection line, and the solenoid valve 5 is connected to the controller 9 through a second connection line.
Wherein, the controller 9 controls the electromagnetic valve 5 to open or close according to the preset temperature and the temperature sent by the temperature sensor 8.
Wherein the temperature sensor 8 acquires the temperature of the gas at the inlet of the evaporative condenser 4, and the temperature acquired by the temperature sensor 8 is used to determine whether the solenoid valve 5 is opened or closed.
That is, the on-off control of the solenoid valve 5 is based on the temperature of the temperature sensor 8, the solenoid valve 5 is opened when the temperature of the temperature sensor 8 is higher than a preset temperature, and the solenoid valve 5 is closed when the temperature of the temperature sensor 8 is lower than the preset temperature.
For example, the temperature sensor 8 sends a temperature of 100 ℃ and the preset temperature is 90 ℃, the controller controls the electromagnetic valve 5 to be opened at this time, the temperature sensor 8 sends a temperature of 90 ℃ and the preset temperature is 100 ℃, and the controller controls the electromagnetic valve 5 to be closed at this time.
Specifically, the compressor 1 sucks in low-temperature and low-pressure refrigerant gas from the evaporator 7, and the refrigerant gas is compressed and pressurized to become high-temperature and high-pressure refrigerant gas and is discharged to the cooling side of the precooler 2; the gas is cooled to be high-pressure gas refrigerant with relatively low temperature in the precooler 2, then the gas is converged with the gas discharged from the gas outlet 32 of the siphon pot 3 and enters the evaporative condenser 4, and the gas is condensed by the evaporative condenser 4 to release heat and becomes high-pressure liquid refrigerant to enter the siphon pot 3; a part of refrigerant liquid in the siphon tank 3 flows into the expansion valve 6 through the refrigerating liquid outlet 34, is throttled and depressurized by the expansion valve 6 to become low-temperature low-pressure wet vapor, and then enters the evaporator 7, and the liquid in the wet vapor is evaporated and absorbs heat in the evaporator 7 to generate a refrigeration phenomenon and then becomes low-pressure low-temperature gas to be sucked by the air inlet end of the compressor 1; the other part of refrigerant liquid in the siphon tank 3 flows into the evaporation side of the precooler 2 through the cooling liquid outlet 35 via the electromagnetic valve 5, evaporates in the evaporation side of the precooler 2 to absorb the heat of the cooling side and then turns into gas, and then returns to the siphon tank 3 via the air return port 31 of the siphon tank 3.
In an alternative embodiment, the solenoid valve 5 is an electric valve or a manual on-off valve.
The solenoid valve 5 may be selected according to actual conditions, and is not specifically limited herein. For example, the solenoid valve 5 is an electric valve.
In alternative embodiments, the expansion valve 6 is an electronic expansion valve, a thermostatic expansion valve, a capillary tube, or an orifice throttling device.
The expansion valve 6 may be selected according to actual conditions, and is not specifically limited herein. The expansion valve 6 is, for example, an electronic expansion valve.
In an alternative embodiment, precooler 2 is a plate heat exchanger, a shell-and-tube heat exchanger, or a plate-and-shell heat exchanger.
The precooler 2 may be selected according to actual working conditions, and is not specifically limited herein. The precooler 2 is, for example, a plate heat exchanger.
In an alternative embodiment, the compressor 1 is a scroll compressor, a rotor compressor, a screw compressor or a piston compressor.
The compressor 1 may be selected according to actual working conditions, and is not specifically limited herein. The compressor 1 is, for example, a scroll compressor.
In alternative embodiments, the evaporative condenser 4 is a blower evaporative condenser, a suction evaporative condenser, a tube evaporative condenser, a plate evaporative condenser, or an air-cooled condenser with water spray function.
The evaporative condenser 4 may be selected according to actual working conditions, and is not limited specifically herein. The evaporative condenser 4 is, for example, a blower-type evaporative condenser.
In alternative embodiments, siphon tank 3 is a separately provided surge tank, a reservoir tank, or is shared with a compressor oil-cooled siphon tank.
The siphon tank 3 may be selected according to actual working conditions, and is not specifically limited herein. For example, siphon tank 3 is common with the compressor oil-cooled siphon tank.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A refrigeration system for delaying water scaling in an evaporative condenser coil, comprising: the system comprises an electromagnetic valve, a controller, an expansion valve, a siphon tank, an evaporator, a compressor, a precooler, a temperature sensor and an evaporative condenser;
the exhaust end of the compressor is connected with the cooling side inlet of the precooler, the cooling side outlet of the precooler is connected with the inlet of the evaporative condenser, the outlet of the evaporative condenser is connected with the liquid inlet of the siphon tank, the cooling liquid outlet of the siphon tank is connected with the evaporation side inlet of the precooler through the electromagnetic valve, the evaporation side outlet of the precooler is connected with the air return port of the siphon tank, the air outlet of the siphon tank is connected with the inlet of the evaporative condenser, the refrigeration liquid outlet of the siphon tank is connected with the inlet of the evaporator through the expansion valve, and the outlet of the evaporator is connected with the air inlet end of the compressor;
the temperature sensor is arranged at the inlet of the evaporative condenser, and the temperature sensor and the electromagnetic valve are both connected with the controller;
the controller controls the electromagnetic valve to be closed when the temperature of the temperature sensor is lower than a preset temperature, and controls the electromagnetic valve to be opened when the temperature of the temperature sensor is higher than the preset temperature.
2. The refrigeration system capable of delaying water scaling of an evaporative condenser coil of claim 1, wherein the solenoid valve is an electrically operated valve or a manually operated on/off valve.
3. The refrigeration system for delaying water scaling of an evaporative condenser coil of claim 1, wherein the expansion valve is an electronic expansion valve, a thermostatic expansion valve, a capillary tube or an orifice plate throttling device.
4. The refrigeration system for delaying evaporative condenser coil water scaling according to claim 1, wherein the precooler is a plate heat exchanger, a shell and tube heat exchanger, or a plate and shell heat exchanger.
5. The refrigeration system for delaying water fouling of evaporative condenser coils of claim 1, wherein the compressor is a scroll compressor, a rotor compressor, a screw compressor or a piston compressor.
6. The refrigeration system for delaying the scaling of the coil water of the evaporative condenser as claimed in claim 1, wherein the evaporative condenser is a blowing evaporative condenser, a suction evaporative condenser, a tubular evaporative condenser, a plate evaporative condenser or a condenser with air-cooling and water-spraying functions.
7. A refrigeration system for delaying water scale formation in an evaporative condenser coil according to claim 1, wherein the siphon canister is a separate buffer canister, a separate liquid storage canister, or is shared with a compressor oil-cooled siphon canister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122770321.8U CN216620334U (en) | 2021-11-12 | 2021-11-12 | Refrigerating system capable of delaying water scaling of evaporative condenser coil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122770321.8U CN216620334U (en) | 2021-11-12 | 2021-11-12 | Refrigerating system capable of delaying water scaling of evaporative condenser coil |
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| CN216620334U true CN216620334U (en) | 2022-05-27 |
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| CN202122770321.8U Active CN216620334U (en) | 2021-11-12 | 2021-11-12 | Refrigerating system capable of delaying water scaling of evaporative condenser coil |
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| CN (1) | CN216620334U (en) |
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- 2021-11-12 CN CN202122770321.8U patent/CN216620334U/en active Active
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