CN212457482U - Water-cooling screw type water chilling unit - Google Patents
Water-cooling screw type water chilling unit Download PDFInfo
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- CN212457482U CN212457482U CN202020764674.XU CN202020764674U CN212457482U CN 212457482 U CN212457482 U CN 212457482U CN 202020764674 U CN202020764674 U CN 202020764674U CN 212457482 U CN212457482 U CN 212457482U
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Abstract
The utility model discloses a water-cooling screw type water chilling unit, including screw compressor. The screw compressor is provided with an exhaust port and an air suction port, the exhaust port of the screw compressor is provided with an exhaust stop valve, and the air suction port of the screw compressor is provided with an air suction stop valve; the exhaust stop valve, the oil separator, the condenser, the dryer, the electronic expansion valve, the evaporator and the suction stop valve are sequentially connected through pipelines; the oil separator is provided with an oil outlet, a main oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the oil outlet, and a first filter, a sight glass and a first electromagnetic valve are arranged on the main oil return pipeline; an evaporator oil outlet is formed in the bottom of the evaporator, an auxiliary oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the evaporator oil outlet, and a second filter, a one-way valve, an air pump and a second electromagnetic valve are arranged on the auxiliary oil return pipeline. The utility model discloses a screw compressor's spoilage is low, long service life, and is with low costs, and the security is good.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner refrigeration, concretely relates to water-cooling screw cooling water set.
Background
For some conditions requiring higher outlet water temperature, the pressure will increase due to the temperature rise, but the range of the suitable working pressure of the compressor is limited, and the larger pressure will damage the compressor, thus affecting the use performance and the service life.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to prior art exists provides a water-cooling screw cooling water set to when solving current chiller and go out the water temperature on the high side, compressor can be damaged to great pressure, influences performance and life's problem.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a water-cooled screw type water chilling unit comprises a screw type compressor, an oil separator, a condenser, a dryer, an electronic expansion valve and an evaporator; the screw compressor is provided with an exhaust port and an air suction port, the exhaust port of the screw compressor is provided with an exhaust stop valve, and the air suction port of the screw compressor is provided with an air suction stop valve; the exhaust stop valve, the oil separator, the condenser, the dryer, the electronic expansion valve, the evaporator and the suction stop valve are sequentially connected through pipelines; the oil separator is provided with an oil outlet, a main oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the oil outlet, and a first filter, a sight glass and a first electromagnetic valve are sequentially arranged on the main oil return pipeline from the oil outlet to the air suction stop valve; the bottom of the evaporator is provided with an evaporator oil outlet, an auxiliary oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the evaporator oil outlet, and a second filter, a one-way valve, an air pump and a second electromagnetic valve are sequentially arranged on the auxiliary oil return pipeline from the evaporator oil outlet to the air suction stop valve.
The utility model discloses further set up as, the exhaust stop valve with be equipped with first pressure sensor and a temperature sensor on the pipeline between the oil separator.
The utility model discloses further set up to, the evaporimeter with be equipped with second pressure sensor and second temperature sensor on the pipeline between the stop valve of breathing in.
The utility model discloses further set up to, the condenser with all be equipped with the relief valve on the evaporimeter, the condenser with the bottom of evaporimeter all is equipped with the bleeder valve.
The utility model discloses further set up to, be equipped with the gas outlet on the condenser, the gas outlet pass through the return air pipeline with the second solenoid valve with pipe connection between the air pump, be equipped with the third solenoid valve on the return air pipeline.
The utility model discloses further set up to, the condenser includes first inlet tube and first outlet pipe, first inlet tube with all be equipped with third temperature sensor on the first outlet pipe.
The utility model discloses further set up as, the evaporimeter includes second inlet tube and second outlet pipe, the second inlet tube with all be equipped with fourth temperature sensor on the second outlet pipe.
The utility model discloses further set up to, the level gauge is equipped with on the evaporimeter.
To sum up, the utility model discloses following beneficial effect has:
(1) the screw compressor is provided with a plurality of temperature sensors, pressure sensors and stop valves, so that the temperature and the pressure can be well detected and controlled, the screw compressor can be effectively prevented from being damaged, the service life is prolonged, and the cost is saved.
(2) The safety valve is arranged, so that the safety is good.
(3) The pipeline is reasonably arranged, and the gas phase and the oil phase of the refrigerant can be fully returned to the screw compressor.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
Wherein, 1, screw compressor; 2. an oil separator; 3. a condenser; 4. a dryer; 5. an electronic expansion valve; 6. an evaporator; 7. an exhaust stop valve; 8. a suction stop valve; 9. an oil outlet; 10. a main oil return conduit; 11. a first filter; 12. a sight glass; 13. a first solenoid valve; 14. an evaporator oil outlet; 15. a secondary oil return conduit; 16. a second filter; 17. a one-way valve; 18. an air pump; 19. a second solenoid valve; 20. a first pressure sensor; 21. a first temperature sensor; 22. a second pressure sensor; 23. a second temperature sensor; 24. a safety valve; 25. a relief valve; 26. a return air duct; 27. a third electromagnetic valve; 28. a third temperature sensor; 29. a fourth temperature sensor; 30. a liquid level meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As an embodiment of the utility model, a water-cooling screw chiller includes screw compressor 1, oil separator 2, condenser 3, desicator 4, electronic expansion valve 5 and evaporimeter 6. The screw compressor 1 has an exhaust port and an intake port, the exhaust port of the screw compressor 1 is provided with an exhaust stop valve 7, and the intake port of the screw compressor 1 is provided with an intake stop valve 8. The exhaust stop valve 7, the oil separator 2, the condenser 3, the dryer 4, the electronic expansion valve 5, the evaporator 6, and the suction stop valve 8 are connected in sequence through pipes. The oil separator 2 is provided with an oil outlet 9, a main oil return pipeline 10 is connected between a pipeline between the evaporator 6 and the suction stop valve 8 and the oil outlet 9, and a first filter 11, a sight glass 12 and a first electromagnetic valve 13 are sequentially arranged on the main oil return pipeline 10 from the oil outlet 9 to the suction stop valve 8. An evaporator oil outlet 14 is arranged at the bottom of the evaporator 6, an auxiliary oil return pipeline 15 is connected between a pipeline between the evaporator 6 and the air suction stop valve 8 and the evaporator oil outlet 14, and a second filter 16, a one-way valve 17, an air pump 18 and a second electromagnetic valve 19 are sequentially arranged on the auxiliary oil return pipeline 15 from the evaporator oil outlet 14 to the air suction stop valve 8. The gas phase in the oil separator 2 enters the condenser 3 and the oil phase returns to the screw compressor 1 after passing through the first filter 11. The gas phase in the evaporator 6 is returned to the screw compressor 1. The second solenoid valve 19 is opened and the oil phase is returned to the screw compressor 1 by the air pump 18 through the second filter 16 and the one-way valve 17 in order. The pressure of the air outlet and the air suction port of the screw compressor 1 can be controlled by adjusting the air exhaust stop valve 7 and the air suction stop valve 8, and the screw compressor 1 can also be directly shut down to stop working so as to ensure the normal working of the screw compressor 1.
Further, safety valves 24 are arranged on the condenser 3 and the evaporator 6, and discharge valves 25 are arranged at the bottoms of the condenser 3 and the evaporator 6. The evaporator 6 is provided with a liquid level gauge 30.
As another embodiment of the present invention, in order to visually see the temperature value and the pressure value, the first pressure sensor 20 and the first temperature sensor 21 are disposed on the pipeline between the exhaust shutoff valve 7 and the oil separator 2. A second pressure sensor 22 and a second temperature sensor 23 are provided on the pipe between the evaporator 6 and the suction cutoff valve 8. The first pressure sensor 20 and the first temperature sensor 21 are used for obtaining the pressure and the temperature of the gaseous refrigerant at the exhaust port, the second pressure sensor 22 and the second temperature sensor 23 are used for obtaining the pressure and the temperature of the gaseous refrigerant at the suction port, the exhaust stop valve 7 is used for controlling the exhaust, and the suction stop valve 8 is used for controlling the intake. For example, the second temperature sensor 23 can be observed, when the refrigerant temperature is higher than the target value, the pressure of the gaseous refrigerant output from the evaporator 6 is caused to be larger than the normal working pressure of the suction port, and by observing the pressure value of the second pressure sensor 22, the suction stop valve 8 is adjusted to enable the pressure of the gaseous refrigerant passing through to be within the normal working pressure range of the suction port of the screw compressor 1, thereby avoiding the damage caused by the abnormal operation of the screw compressor 1 when the refrigeration temperature is higher than the target value and saving the cost.
Further, when the pressure of the pipeline of the exhaust port obtained by the first pressure sensor 20 is greater than the normal working pressure, the adjusting exhaust stop valve 7 is disconnected and the screw compressor 1 stops working; when the pressure of the suction inlet channel obtained by the second pressure sensor 22 is greater than the normal operating pressure, the suction shut-off valve 8 is closed and the screw compressor 1 is deactivated. Further ensuring the normal operation of the screw compressor 1.
As another embodiment of the present invention, a gas outlet is provided on the condenser 3, the gas outlet is connected to the second electromagnetic valve 19 and the gas pump 18 through a pipe between the gas return pipe 26 and the gas pump 18, and a third electromagnetic valve 27 is provided on the gas return pipe 26. The second solenoid valve 19 and the third solenoid valve 27 are opened and the gas phase in the condenser 3 enters the screw compressor 1 via the return air duct 26 and the suction opening.
Specifically, the condenser 3 includes a first water inlet pipe and a first water outlet pipe, and both the first water inlet pipe and the first water outlet pipe are provided with a third temperature sensor 28. The evaporator 6 comprises a second water inlet pipe and a second water outlet pipe, and fourth temperature sensors 29 are arranged on the second water inlet pipe and the second water outlet pipe. The third temperature sensor 28 and the fourth temperature sensor 29 are used for monitoring the temperature of the inlet water and the outlet water, and water flow switches can be arranged on the first water inlet pipe and the second water inlet pipe, so that the temperature of the heat exchange medium water can be further controlled.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A water-cooling screw type water chilling unit is characterized by comprising a screw type compressor, an oil separator, a condenser, a dryer, an electronic expansion valve and an evaporator; the screw compressor is provided with an exhaust port and an air suction port, the exhaust port of the screw compressor is provided with an exhaust stop valve, and the air suction port of the screw compressor is provided with an air suction stop valve; the exhaust stop valve, the oil separator, the condenser, the dryer, the electronic expansion valve, the evaporator and the suction stop valve are sequentially connected through pipelines; the oil separator is provided with an oil outlet, a main oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the oil outlet, and a first filter, a sight glass and a first electromagnetic valve are sequentially arranged on the main oil return pipeline from the oil outlet to the air suction stop valve; the bottom of the evaporator is provided with an evaporator oil outlet, an auxiliary oil return pipeline is connected between a pipeline between the evaporator and the air suction stop valve and the evaporator oil outlet, and a second filter, a one-way valve, an air pump and a second electromagnetic valve are sequentially arranged on the auxiliary oil return pipeline from the evaporator oil outlet to the air suction stop valve.
2. The water-cooled screw chiller according to claim 1 wherein a first pressure sensor and a first temperature sensor are provided on the conduit between said exhaust shut-off valve and said oil separator.
3. The water-cooled screw chiller according to claim 1 wherein a second pressure sensor and a second temperature sensor are provided on the conduit between said evaporator and said suction stop valve.
4. The water-cooled screw chiller according to claim 1, wherein said condenser and said evaporator each have a relief valve and said condenser and said evaporator each have a relief valve at the bottom thereof.
5. The water-cooled screw chiller according to claim 1, wherein an air outlet is provided on said condenser, said air outlet is connected to a pipe between said second solenoid valve and said air pump through an air return pipe, and a third solenoid valve is provided on said air return pipe.
6. The water-cooled screw chiller of claim 1, wherein said condenser comprises a first water inlet pipe and a first water outlet pipe, and a third temperature sensor is disposed on each of said first water inlet pipe and said first water outlet pipe.
7. The water-cooled screw chiller of claim 1, wherein said evaporator comprises a second water inlet pipe and a second water outlet pipe, and a fourth temperature sensor is disposed on each of said second water inlet pipe and said second water outlet pipe.
8. The water-cooled screw chiller of claim 1, wherein said evaporator is fitted with a level gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764674.XU CN212457482U (en) | 2020-05-11 | 2020-05-11 | Water-cooling screw type water chilling unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764674.XU CN212457482U (en) | 2020-05-11 | 2020-05-11 | Water-cooling screw type water chilling unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212457482U true CN212457482U (en) | 2021-02-02 |
Family
ID=74465395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020764674.XU Active CN212457482U (en) | 2020-05-11 | 2020-05-11 | Water-cooling screw type water chilling unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212457482U (en) |
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2020
- 2020-05-11 CN CN202020764674.XU patent/CN212457482U/en active Active
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