Air source heat pump with self-adapting inlet area

Abstract

The utility model relates to the field of heating ventilation air conditioning equipment especially relates to a kind of air source heat pump of self-adapting regulation air inlet area, including air source heat pump and baffle, air source heat pump top is connected with air inlet cover, air inlet cover inside is opened with air inlet pipeline, air inlet pipeline in air inlet cover is equipped with wind speed detector, air inlet cover front and back both sides are all connected with mounting plate, air source heat pump top is equipped with controller, air inlet cover top front and back both ends are all equipped with motor, baffle left and right ends are all slidingly connected in mounting plate, guiding rod is connected in mounting plate, two-way screw rod is rotatably connected in mounting plate, two-way screw rod top and the output shaft of motor are connected, baffle one end and guiding rod slidingly connect, other end and two-way screw rod are threadedly connected.Air flow rate data in air inlet pipeline are collected in real time by wind speed detector, the corresponding relationship between air inlet area and motor angle built-in controller is combined, so that controller can dynamically adjust motor rotation angle.

Description

Technical Field

[0001] This utility model relates to the field of heating, ventilation and air conditioning equipment, and in particular to an air source heat pump that adaptively adjusts the air inlet area. Background Technology

[0002] An air source heat pump is a highly efficient and energy-saving device that absorbs heat energy from the outside air to provide heating or cooling. Its core principle is to exchange heat with the air through an evaporator, using a refrigerant cycle to transfer heat to the indoor environment or exhaust it outdoors. In actual operation, the air intake volume is a key parameter affecting the heat pump's energy efficiency ratio, heat exchange efficiency, and equipment stability: insufficient air intake volume leads to decreased evaporator heat exchange efficiency and increased compressor power consumption; excessive air intake volume may cause problems such as excessively low condenser outlet temperature and accelerated frosting. Therefore, precise control of the air intake volume is a core requirement for optimizing the operational performance of an air source heat pump.

[0003] In existing technologies, the control of air intake volume in air source heat pumps is mainly achieved by adjusting the physical area of ​​the air intake channel. For example, mechanical dampers, adjustable baffles, or electric valves are used to limit or increase airflow by opening or closing the air intake channel. Some advanced systems further incorporate temperature or pressure sensors to automatically adjust the air intake opening based on feedback signals, adapting to changes in ambient temperature or load demands.

[0004] While existing technologies control airflow by adjusting the inlet area, they suffer from a significant drawback: there is no direct correlation between the inlet opening degree and the actual airflow. For example, when the inlet opening increases but the outside wind speed decreases, the actual airflow may not increase significantly; conversely, when the inlet opening decreases but the wind speed increases, the airflow may still exceed the demand. This "area control + fixed wind speed assumption" model prevents the system from accurately matching real-time airflow and heat load demand, leading to problems such as decreased energy efficiency ratio, increased risk of frosting, and unstable compressor operation, severely limiting the adaptability and energy-saving effect of air source heat pumps in complex environments. Utility Model Content

[0005] To overcome the drawbacks of a single control method, this invention provides an air source heat pump that adaptively adjusts the air inlet area, aiming to solve the aforementioned shortcomings.

[0006] An air source heat pump with adaptive adjustment of air inlet area includes an air source heat pump and a baffle. An air inlet shroud is connected to the top of the air source heat pump. An air inlet duct is opened inside the air inlet shroud, and a wind speed detector is installed inside the air inlet duct. Mounting plates are connected to both the front and rear sides of the air inlet shroud. A controller is mounted on the top of the air source heat pump. Motors are mounted at both the front and rear ends of the top of the air inlet shroud. The controller is wired to the wind speed detector and the motors. The left and right ends of the baffle are slidably connected to the mounting plates. A guide rod is connected inside the mounting plates. A bidirectional lead screw is rotatably connected inside the mounting plates. The bidirectional lead screw and the guide rod are symmetrical about the air inlet shroud. The top of the bidirectional lead screw is connected to the output shaft of the motor. One end of the baffle is slidably connected to the guide rod, and the other end is threadedly connected to the bidirectional lead screw.

[0007] In one embodiment, a fixing plate is connected to the side of the mounting plate away from the air inlet shroud, a filter screen is slidably connected to the two fixing plates, a fixing screw is threaded onto the fixing plate, a pressure plate is slidably connected to the fixing plate, the pressure plate is in contact with the end of the filter screen, and the end of the fixing screw is rotatably connected to the pressure plate.

[0008] In one embodiment, shock-absorbing pads are connected to both the front and rear sides of the left and right ends of the filter.

[0009] In one embodiment, a pull rod is connected to one side of the filter screen that penetrates the fixing plate.

[0010] In one embodiment, a guide block is connected inside the fixing plate used to limit the end of the filter screen, and the guide block is provided with inclined surfaces that cooperate with the upper and lower ends of the filter screen.

[0011] In one embodiment, a sealing gasket is connected to the side of the baffle facing the center point of the air inlet duct of the air inlet hood.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By collecting real-time airflow velocity data from the air intake duct using an anemometer, and combining this with the relationship between the air intake area and the motor angle built into the controller, the controller can dynamically adjust the motor rotation angle.

[0014] 2. By driving the bidirectional lead screw to rotate through the motor, the bidirectional lead screw and the guide rod together constrain the movement trajectory of the baffle, forming a coordinated synchronous reverse movement of the baffle. This achieves the linkage adjustment between the effective area of ​​the air inlet duct and the actual wind speed, ultimately achieving the goal of precise control of airflow.

[0015] 3. Through the combined design of the filter screen, fixed plate, pressure plate, and shock-absorbing pad, the filter screen can be quickly inserted into the fixed plate along the inclined surface of the guide block, forming an elastic compression fit between the end of the filter screen and the pressure plate. The pressure of the pressure plate can be adjusted by the fixing screws. Combined with the elastic deformation of the shock-absorbing pad, the filter screen can achieve the dual functions of stable installation and convenient disassembly and assembly, ultimately achieving the purpose of blocking debris from entering the air intake duct and facilitating maintenance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the installation structure of the motor and the bidirectional lead screw of this utility model.

[0018] Figure 3 This is a cross-sectional view showing the connection relationship between the filter screen and the fixing screws of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1-Air source heat pump, 2-Air inlet hood, 3-Anemometer, 4-Controller, 5-Mounting plate, 6-Motor, 7-Double-actuated screw, 8-Guide rod, 9-Baffle, 10-Fixing plate, 11-Filter screen, 12-Pressure plate, 13-Fixing screw, 14-Shock damping pad, 15-Pull rod, 16-Guide block, 17-Sealing gasket. Detailed Implementation

[0020] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0021] Example: An air source heat pump that adaptively adjusts the air inlet area, such as Figures 1-3 As shown, the system includes an air source heat pump 1, an air inlet shroud 2, an anemometer 3, a controller 4, a mounting plate 5, a motor 6, a two-way lead screw 7, a guide rod 8, and a baffle 9. The air source heat pump 1 is connected to the top of the air inlet shroud 2. The air inlet shroud 2 has two air inlet pipes, one front and one rear. These two pipes operate independently and their flow rates are independently adjustable. An anemometer 3 is installed inside the air inlet pipes of the air inlet shroud 2. Mounting plates 5 are connected to both the front and rear sides of the air inlet shroud 2. The controller 4 is mounted on the top of the air source heat pump 1. Anemometer 3 is installed at both the front and rear ends of the top of the air inlet shroud 2. Equipped with motor 6, controller 4 is wired to wind speed detector 3 and motor 6. Both ends of baffle 9 are slidably connected to mounting plate 5. Guide rod 8 is connected inside mounting plate 5. Bidirectional screw 7 is rotatably connected inside mounting plate 5. Bidirectional screw 7 and guide rod 8 are symmetrical about air inlet hood 2. The top of bidirectional screw 7 is connected to the output shaft of motor 6. One end of baffle 9 is slidably connected to guide rod 8, and the other end is threadedly connected to bidirectional screw 7. The movement trajectory is guided by bidirectional screw 7 and guide rod 8. The area of ​​the two baffles 9 is larger than the area of ​​air inlet duct of air inlet hood 2.

[0022] like Figure 1 and Figure 3 As shown, it also includes a fixing plate 10, a filter screen 11, a pressure plate 12, and a fixing screw 13. The fixing plate 10 is connected to the side of the mounting plate 5 away from the air inlet hood 2. The filter screen 11 is slidably connected inside the two fixing plates 10. The fixing screw 13 is threadedly connected to the fixing plate 10. The pressure plate 12 is slidably connected inside the fixing plate 10. The pressure plate 12 is in contact with the end of the filter screen 11. The surface of the pressure plate 12 is provided with anti-slip texture to increase the friction with the filter screen 11. The end of the fixing screw 13 is rotatably connected to the pressure plate 12.

[0023] like Figure 3 As shown, it also includes shock-absorbing pads 14. The front and back sides of both ends of the filter screen 11 are connected to shock-absorbing pads 14. The silicone shock-absorbing pads 14 buffer the vibration of the filter screen 11 when it slides.

[0024] like Figure 3 As shown, it also includes a pull rod 15. The pull rod 15 is connected to one side of the filter screen 11 that penetrates the fixing plate 10. The length of the pull rod 15 extends beyond the edge of the fixing plate 10, making it convenient to operate by hand. The filter screen 11 can be disassembled and assembled without tools.

[0025] like Figure 3 As shown, it also includes a guide block 16, which is used to limit the fixed plate 10 at the end of the filter screen 11. The guide block 16 is provided with an inclined surface that cooperates with the upper and lower ends of the filter screen 11. The inclined surface assists in guiding and reduces insertion resistance.

[0026] like Figure 2 As shown, it also includes a sealing gasket 17. The side of the baffle 9 facing the center point of the air inlet duct of the air inlet cover 2 is connected to the sealing gasket 17. The sealing gasket 17 fills the gap when the baffle 9 is closed.

[0027] When the air source heat pump 1 is running, outside air enters the equipment independently through the air inlet ducts on both sides of the air inlet hood 2. The flowing air causes the anemometer 3 to work, and the anemometer 3 collects air velocity data in real time and transmits it to the controller 4. The controller 4, based on the preset correspondence between the air inlet area and the rotation angle of the motor 6, determines the up and down position of the baffle 9 by reading the current rotation angle of the motor 6, and then drives the motor 6 to operate. When the motor 6 rotates, it drives the bidirectional lead screw 7 to rotate. The bidirectional lead screw 7 drives the two baffles 9 to slide synchronously in opposite directions along the guide rod 8 through thread transmission, thereby adjusting the effective ventilation cross-sectional area of ​​the air inlet duct of the air inlet hood 2. When it is necessary to increase the air flow, the motor 6 drives the bidirectional lead screw 7 to move the baffles 9 up and down respectively, expanding the effective area of ​​the air inlet channel; when it is necessary to reduce the flow or close the air inlet channel, the baffles 9 move towards the middle until the air inlet duct is completely closed. At this time, the sealing gasket 17 undergoes elastic deformation due to the compression of the baffles 9, filling the gap between the baffles 9 and the contact surface of the air inlet hood 2, enhancing the sealing effect.

[0028] The air inlet hood 2 has filters 11 on both sides to block debris such as leaves. Users need to clean the filters 11 regularly to ensure air intake efficiency. During cleaning, first loosen the fixing screw 13 in the middle of the fixing plate 10. The rotation of the fixing screw 13 causes the pressure plate 12 to move away from the end of the filter 11, reducing the squeezing pressure between the pressure plate 12 and the filter 11, allowing the filter 11 to slide smoothly within the fixing plate 10. Then, pull the filter 11 out of the fixing plate 10 using the pull rod 15 on the side of the filter 11. After cleaning the surface debris, reinsert the filter 11 into the fixing plate 10. During insertion, the end of the filter 11 first enters the groove of one side of the fixing plate 10. When the end of the filter 11 contacts the groove of the other side of the fixing plate 10, the guide block 16 inside the fixing plate 10 guides the end of the filter 11 through its inclined structure, assisting the filter 11 to slide in smoothly. After the filter screen 11 is installed in place, the shock-absorbing pads 14 on the front and rear sides of the filter screen 11 are embedded into the two fixing plates 10 on both sides to provide basic positioning. At this time, tighten the fixing screws 13. The fixing screws 13 push the pressure plate 12 to move towards the end of the filter screen 11 and squeeze the shock-absorbing pads 14. The shock-absorbing pads 14 undergo elastic deformation under pressure. Through the reaction force, a pre-tightening force perpendicular to the sliding direction is formed between the filter screen 11, the pressure plate 12, and the fixing plate 10 to ensure the stable connection of the filter screen 11. At the same time, the elastic restoring force of the shock-absorbing pads 14 makes the fixing screws 13 and the threads of the fixing plate 10 fit tightly together to prevent the screws from loosening.

[0029] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent substitutions made within the principles of this utility model should be included within the protection scope of this utility model. Contents not described in detail in this utility model are existing technologies known to those skilled in the art.

Claims

1. An air source heat pump with adaptive adjustment of air inlet area, characterized in that: The system includes an air source heat pump (1) and a baffle (9). The air source heat pump (1) is connected to an air inlet hood (2) at the top. An air inlet duct is opened inside the air inlet hood (2). An anemometer (3) is installed inside the air inlet duct of the air inlet hood (2). Mounting plates (5) are connected to both the front and rear sides of the air inlet hood (2). A controller (4) is installed on the top of the air source heat pump (1). Motors (6) are installed at both the front and rear ends of the top of the air inlet hood (2). The controller (4) is connected to the anemometer (3) and the motors. (6) Wired connection, both ends of the baffle (9) are slidably connected to the mounting plate (5), the mounting plate (5) is connected to the guide rod (8), the mounting plate (5) is rotatably connected to the bidirectional screw (7), the bidirectional screw (7) and the guide rod (8) are symmetrical about the air inlet cover (2), the top of the bidirectional screw (7) is connected to the output shaft of the motor (6), one end of the baffle (9) is slidably connected to the guide rod (8), and the other end is threadedly connected to the bidirectional screw (7).

2. An air source heat pump with adaptive adjustment of air inlet area as described in claim 1, characterized in that: A fixing plate (10) is connected to the side of the mounting plate (5) away from the air inlet hood (2). A filter screen (11) is slidably connected inside the two fixing plates (10). A fixing screw (13) is threadedly connected to the fixing plate (10). A pressure plate (12) is slidably connected inside the fixing plate (10). The pressure plate (12) is in contact with the end of the filter screen (11). The end of the fixing screw (13) is rotatably connected to the pressure plate (12).

3. An air source heat pump with adaptive adjustment of air inlet area as described in claim 2, characterized in that: The filter screen (11) has shock-absorbing pads (14) connected to the front and back sides at both ends.

4. An air source heat pump with adaptive adjustment of air inlet area as described in claim 3, characterized in that: A pull rod (15) is connected to one side of the filter screen (11) that penetrates the fixing plate (10).

5. An air source heat pump with adaptive adjustment of air inlet area as described in claim 4, characterized in that: A guide block (16) is connected inside the fixing plate (10) used to limit the end of the filter screen (11). The guide block (16) is provided with inclined surfaces that cooperate with the upper and lower ends of the filter screen (11).

6. An air source heat pump with adaptive adjustment of air inlet area as described in claim 5, characterized in that: A sealing gasket (17) is connected to the side of the baffle (9) facing the center point of the air inlet duct of the air inlet cover (2).

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