一种防液击的空气源热泵系统
By installing spiral-wound heat transfer tubes and temperature sensors in the air source heat pump system, the liquid slugging problem was solved, improving system reliability and maintenance safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINLEI COMPRESSOR CO LTD
- Filing Date
- 2025-09-10
- Publication Date
- 2026-07-17
AI Technical Summary
In existing air source heat pump systems, unreasonable finned heat exchanger design and insufficient gas-liquid separator volume lead to frequent liquid slugging in the compressor, damaging components and reducing system reliability.
A spiral heat transfer tube is installed around the compressor, extending into the gas-liquid separator in a serpentine pattern. Temperature sensors are installed at key locations. The compressor's waste heat is used for gas-liquid separation through the heat transfer tube, increasing the intake volume and reducing the exhaust temperature, thereby reducing the risk of liquid slugging.
It effectively reduces the possibility of liquid slugging, improves system reliability, and reduces compressor surface temperature during maintenance, thus improving maintenance comfort.
Smart Images
Figure CN224517054U_ABST
Abstract
Claims
1. A liquid-protected air source heat pump system, the heat pump system comprising a compressor (5), a vapor-liquid separator (6), and a four-way valve (7), the compressor (5), vapor-liquid separator (6), and four-way valve (7) being connected in series by piping to form a circuit, characterized by, The compressor (5) is provided with a heat transfer tube (1). The heat transfer tube (1) is spirally coiled around the compressor (5) and extends into the vapor-liquid separator (6) in a serpentine shape. The lowest point of the serpentine heat transfer tube (1) in the vertical direction should be located in the middle and lower part of the vapor-liquid separator (6).
2. The liquid strike prevention air source heat pump system according to claim 1, wherein, The compressor (5) has a power of at least 5 horsepower.
3. The liquid strike prevention air source heat pump system of claim 1, wherein, A return gas temperature sensor (8) is installed on the pipeline between the compressor (5) and the gas-liquid separator (6), and an exhaust gas temperature sensor (9) is installed on the pipeline between the compressor (5) and the four-way valve (7).
4. The liquid strike prevention air source heat pump system of claim 1, wherein, The heat pump system also includes a water-side heat exchanger (10), a liquid receiver (11), a finned heat exchanger (12), and a fan (13); the water-side heat exchanger (10), the liquid receiver (11), the finned heat exchanger (12), and the four-way valve (7) are connected in sequence through pipes to form a loop, and the fan (13) is located on one side of the finned heat exchanger (12).
5. The liquid strike prevention air source heat pump system according to claim 4, wherein, A main electronic expansion valve (18) is provided between the liquid storage tank (11) and the finned heat exchanger (12).
6. The liquid strike prevention air source heat pump system according to claim 5, wherein, An auxiliary electronic expansion valve (2) and an economizer (3) are also provided between the liquid receiver (11) and the compressor (5). The liquid receiver (11), the auxiliary electronic expansion valve (2), the economizer (3) and the compressor (5) are connected in sequence through pipelines.
7. The liquid strike prevention air source heat pump system of claim 4, wherein, The water-side heat exchanger (10) has an inlet at one end and an outlet at the other end, and an organic circulating water pump (14) is installed on the pipe of the inlet.
8. The liquid strike prevention air source heat pump system according to claim 7, wherein, An inlet water temperature sensor (15) and a flow switch (17) are installed between the water-side heat exchanger (10) and the unit circulating water pump (14), and an outlet water temperature sensor (16) is installed on the outlet pipe.
9. The liquid strike prevention air source heat pump system of claim 4, wherein, The finned heat exchanger (12) is equipped with a coil temperature sensor (19).