Two-phase cooling system with high energy efficiency ratio

Abstract

The utility model relates to a two-phase cooling system with a high energy efficiency ratio, which is characterized in that a load return pipe is connected with a two-phase separator sequentially through a return pipe temperature sensor and a return pipe pressure sensor by a load, a gas phase of the two-phase separator is connected with a high-point inlet of an air-cooled condenser, and a low-point outlet of the air-cooled condenser is connected with a liquid storage tank through a condensed liquid outlet pipe; an electric heating belt is arranged on the liquid storage tank, the liquid storage tank is connected with a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor and a liquid supply pressure sensor are sequentially arranged on the load inlet pipe, a liquid phase of the two-phase separator is divided into two paths after passing through a separation flow sensor, one path is connected with a condensation liquid outlet pipe or the liquid storage tank through a stop valve, and the other path is connected with a liquid outlet pipe or the liquid storage tank. And the other path is connected in front of the dry filter on the load inlet pipe. After Freon gas-liquid coexistence two phases of return gas in the load return pipe are sent to the two-phase separator to be separated, the gas phase is sent to a high-point inlet of the air-cooled condenser, and the residual liquid phase directly descends and is sent out from a low-point outlet and drives the liquid phase to descend after the gas phase is subjected to heat exchange and condensation, so that the energy efficiency ratio is ensured.

Description

Technical Field

[0001] This utility model relates to a cooling system, specifically a high-efficiency two-phase cooling system. Background Technology

[0002] In existing cooling systems for Freon refrigeration loads, Freon return gas is wet return gas, which includes two phases of gas and liquid. The two-phase return gas is directly sent to the condenser. According to the traditional design concept, in order to ensure gas delivery and liquid outlet, the air-cooled condenser usually adopts a bottom air inlet structure. This can easily cause the liquid phase to sink and block the air inlet, affecting the refrigeration operation and heat exchange efficiency. Summary of the Invention

[0003] This invention provides a two-phase cooling system with a simple structure and high energy efficiency ratio that can effectively ensure stable operation and heat exchange efficiency.

[0004] The technical solution adopted by this utility model is: a high-efficiency two-phase cooling system, including a load return pipe, a load inlet pipe, and an air-cooled condenser. The load return pipe is connected to a two-phase separator via a load inlet, a return pipe temperature sensor, and a return pipe pressure sensor. The gas phase of the two-phase separator is connected to the high-point inlet of the air-cooled condenser, and the low-point outlet of the air-cooled condenser is connected to a storage tank via a condensate outlet pipe. An electric heating belt is installed on the storage tank. The storage tank is connected to the load inlet pipe, which is sequentially equipped with a dryer filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, and a liquid supply pressure sensor. The liquid phase of the two-phase separator is split into two paths after passing through the separation flow sensor. One path is connected to the condensate outlet pipe or the storage tank via a shut-off valve, and the other path is connected to the dryer filter on the load inlet pipe.

[0005] The load return pipe branches off into a low-temperature bypass pipe after the return pipe pressure sensor. A shut-off valve is installed on the low-temperature bypass pipe, which is connected to a condensate outlet pipe or a storage tank.

[0006] An auxiliary electric heater is installed after the magnetic pump in the load inlet pipe.

[0007] The load inlet pipe is provided with a bypass branch after the magnetic pump, and the bypass branch is returned to the storage tank via a one-way shut-off valve.

[0008] The bypass branch is set up as one or more.

[0009] The beneficial effects of this utility model are:

[0010] 1. The Freon gas-liquid coexisting two phases in the load return pipe are sent to the two-phase separator for separation. The gas phase is sent to the high point inlet of the air-cooled condenser, while the residual liquid phase is sent directly down and sent out from the low point outlet. This also drives the liquid phase after heat exchange and condensation of the gas phase to move down, which helps to ensure the condensing energy efficiency ratio and avoids the problem of liquid phase accumulation and blockage of the gas phase caused by the low point inlet, resulting in a low condensing energy efficiency ratio.

[0011] 2. The liquid phase separated by the two-phase separator does not require a blower-cooled condenser and can be directly sent out of the liquid pipe or into the load pipe, which helps to improve the energy efficiency ratio.

[0012] 3. An electric heating belt is installed on the liquid storage tank, and an auxiliary electric heating is installed after the magnetic pump. The structure of the two ensures accurate liquid supply temperature under load.

[0013] 4. A low-temperature bypass pipeline is set before the two-phase separator in the load return pipe. When the load ambient temperature is close to the liquid supply temperature of the load storage tank, the load return gas can be partially bypassed at low temperature, partially sent to the two-phase separator and air-cooled condenser, and finally sent to the liquid storage tank for liquid supply from the load inlet pipe. This helps to save energy and has a high energy efficiency ratio.

[0014] 5. A bypass branch is set after the magnetic pump in the load inlet pipe, which can return the liquid to the storage tank, meet the needs of liquid supply bypass and pump depressurization, and improve the system's energy efficiency ratio and safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] In the diagram: 1. Load return pipe; 2. Return pipe temperature sensor; 3. Return pipe pressure sensor; 4. Low-temperature bypass pipe; 5. Check valve; 6. Shut-off valve; 7. Two-phase separator; 8. Separation flow sensor; 9. Air-cooled condenser; 10. Condensate outlet pipe; 11. Storage tank; 12. Electric heating belt; 13. Load inlet pipe; 14. Dryer filter; 15. Magnetic pump; 16. Auxiliary electric heating; 17. Liquid supply flow sensor; 18. Liquid supply temperature sensor; 19. Liquid supply pressure sensor; 20. Bypass branch. Detailed Implementation

[0017] The following explanation, in conjunction with the accompanying drawings, will provide further details.

[0018] Figure 1 As shown: A high-efficiency two-phase cooling system includes a load return pipe 1, a return pipe temperature sensor 2, a return pipe pressure sensor 3, a low-temperature bypass pipe 4, a shut-off valve 6, a two-phase separator 7, a separation flow sensor 8, an air-cooled condenser 9, a condensate outlet pipe 10, a liquid storage tank 11, an electric heating belt 12, a load inlet pipe 13, a dryer filter 14, a magnetic pump 15, an auxiliary electric heater 16, a liquid supply flow sensor 17, a liquid supply temperature sensor 18, a liquid supply pressure sensor 19, and a bypass branch 20.

[0019] The load return pipe 1 is connected to the load and then splits into two paths via the return pipe temperature sensor 2 and the return pipe pressure sensor 3. One path connects to the two-phase separator 7. The gas phase of the two-phase separator 7 is connected to the high-point inlet of the air-cooled condenser 9. The low-point outlet of the air-cooled condenser 9 is connected to the liquid storage tank 11 via the condensate outlet pipe 10. The liquid storage tank 11 is equipped with an electric heating belt 12. The liquid storage tank 11 is connected to the load inlet pipe 13. The load inlet pipe 13 is equipped with a dryer filter 14, a magnetic pump 15, an auxiliary electric heater 16, a liquid supply flow sensor 17, a liquid supply temperature sensor 18, and a liquid supply pressure sensor 19. The liquid phase of the two-phase separator 7 is connected to the condensate outlet pipe 10 and the dryer filter 14 on the load inlet pipe 13 after passing through the separation flow sensor 8. The other path is a low-temperature bypass pipe 5. The low-temperature bypass pipe 4 is equipped with a shut-off valve 6 and a check valve 5. The low-temperature bypass pipe 4 is connected to the condensate outlet pipe 10.

[0020] One or more bypass branches 20 are set after the magnetic pump inlet pipe. The bypass branches are returned to the storage tank 11 via a one-way shut-off valve.

[0021] Based on this embodiment, check valves and / or shut-off valves can be installed on the pipelines connecting each pipe and each device. The shut-off valves can be electrically controlled. Flow sensors, temperature and pressure sensors can also be installed on the pipelines connecting each pipe and each device to improve the safety and accuracy of system control. This technology is a conventional technology in existing air conditioning technology and will not be described in detail in this application.

Claims

1. A high energy ratio two-phase cooling system comprising a load return pipe, a load intake pipe and an air cooled condenser, characterized in that: The load return pipe is connected with the load in sequence through a return pipe temperature sensor, a return pipe pressure sensor, a two-phase separator, a high point inlet of the air-cooled condenser, a low point outlet of the air-cooled condenser, a condensate pipe, a liquid storage tank, an electric heating belt, a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a separation flow sensor, a cut-off valve, and the condensate pipe or the liquid storage tank.

2. A high energy efficiency ratio two-phase cooling system according to claim 1, characterized in that: The load return pipe is connected with the load in sequence through a return pipe temperature sensor, a return pipe pressure sensor, a two-phase separator, a high point inlet of the air-cooled condenser, a low point outlet of the air-cooled condenser, a condensate pipe, a liquid storage tank, an electric heating belt, a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a separation flow sensor, a cut-off valve, and the condensate pipe or the liquid storage tank.

3. A high EER two-phase cooling system according to claim 1, characterized in that: The load return pipe is connected with the load in sequence through a return pipe temperature sensor, a return pipe pressure sensor, a two-phase separator, a high point inlet of the air-cooled condenser, a low point outlet of the air-cooled condenser, a condensate pipe, a liquid storage tank, an electric heating belt, a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a separation flow sensor, a cut-off valve, and the condensate pipe or the liquid storage tank.

4. A high EER two-phase cooling system as claimed in claim 1 or 3, characterized in that: The load return pipe is connected with the load in sequence through a return pipe temperature sensor, a return pipe pressure sensor, a two-phase separator, a high point inlet of the air-cooled condenser, a low point outlet of the air-cooled condenser, a condensate pipe, a liquid storage tank, an electric heating belt, a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a separation flow sensor, a cut-off valve, and the condensate pipe or the liquid storage tank.

5. A high EER two-phase cooling system according to claim 4, characterized by: The load return pipe is connected with the load in sequence through a return pipe temperature sensor, a return pipe pressure sensor, a two-phase separator, a high point inlet of the air-cooled condenser, a low point outlet of the air-cooled condenser, a condensate pipe, a liquid storage tank, an electric heating belt, a load inlet pipe, a drying filter, a magnetic pump, a liquid supply flow sensor, a liquid supply temperature sensor, a liquid supply pressure sensor, a separation flow sensor, a cut-off valve, and the condensate pipe or the liquid storage tank.

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