一种利用中深层地热除霜的空气源热泵耦合地热供热系统
By introducing an air-source heat pump and a defrosting auxiliary device into the medium-deep geothermal heating system, and adopting a split-side water pump design and geothermal pipe defrosting, the problems of geothermal water scaling and high energy consumption of traditional defrosting are solved, achieving efficient and stable heating effect and low energy consumption operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI XIXIAN NEW AREA FENGXI NEW CITY ENERGY DEV CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-17
AI Technical Summary
In traditional geothermal heating systems, the high mineral content of geothermal water makes it prone to scaling, which affects heat exchange efficiency and equipment lifespan. Traditional defrosting methods are energy-intensive and cause large room temperature fluctuations, affecting user comfort and system energy efficiency.
The system adopts a medium-deep geothermal heating system combined with an air source heat pump and a defrosting auxiliary device. It uses a design with a high-pressure-drop, high-flow industrial frequency circulating water pump and a low-pressure-drop, low-flow variable frequency water pump on both sides. Defrosting is carried out in conjunction with the geothermal system heating pipes, and the defrosting is automatically started by monitoring the evaporator temperature.
It improves heat exchange efficiency, reduces system operating energy consumption, ensures stable room temperature for users, avoids energy loss and heat pump impact associated with traditional defrosting, extends equipment life, and enhances user comfort and system efficiency.
Smart Images
Figure CN224516878U_ABST
Abstract
Claims
1. An air source heat pump coupled geothermal heating system utilizing intermediate-depth geothermal heat for defrosting, characterized in that, include: A medium-deep geothermal heating system (1), wherein the medium-deep geothermal heating system (1) includes a buried pipe (11); Plate heat exchanger (2), the plate heat exchanger (2) includes a primary side (21) and a secondary side (22), and the buried pipe (11) of the medium-deep geothermal heating system (1) is connected to the primary side (21) of the plate heat exchanger (2); A heat pump unit (3) is connected to the secondary side (22) of the plate heat exchanger (2); An air source heat pump (4) is connected to the heat pump unit (3); The defrosting auxiliary device (5) includes a heating pipe (51) supplied by the geothermal system. The heating pipe (51) is connected to the air source heat pump (4) through a solenoid valve (52). When the air source heat pump (4) needs to be defrosted, the user-side hot water supply valve (53) is closed, and the hot water from the heating pipe (51) is opened to enter the evaporator (41) for defrosting.
2. The air source heat pump coupled geothermal heating system with intermediate-depth geothermal defrosting of claim 1, wherein: The primary side (21) uses a high-pressure-drop, high-flow-rate industrial frequency circulating water pump, while the secondary side (22) uses a low-pressure-drop, low-flow-rate variable frequency water pump.
3. The air source heat pump coupled geothermal heating system utilizing the intermediate-depth geothermal energy for defrosting according to claim 1, characterized in that: The defrosting auxiliary device (5) can automatically restore the user's heating status after defrosting, ensuring that the user's room temperature remains continuous and stable.
4. The air source heat pump coupled geothermal heating system utilizing the intermediate-depth geothermal energy for defrosting according to claim 1, characterized in that: The medium-deep geothermal heating system (1) also includes a filter (12), which is located between the buried pipe (11) and the primary side (21) of the plate heat exchanger (2) for water quality treatment of geothermal water and reducing the scaling of geothermal water.
5. The air-source heat pump coupled with geothermal heating system utilizing medium-deep geothermal defrosting as described in claim 1, characterized in that: The defrosting auxiliary device (5) also includes a temperature sensor, which is installed on the evaporator (41) of the air source heat pump (4) to monitor the temperature of the evaporator (41). When the temperature of the evaporator (41) is lower than the set value, the defrosting process is automatically started.