Air source heat pump unit with noise reduction and sound insulation
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 青岛鼎信科佳新能源有限公司
- Filing Date
- 2026-04-13
- Publication Date
- 2026-05-29
Smart Images
Figure CN122107618A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of air source heat pump units, specifically a noise-reducing and sound-insulating air source heat pump unit. Background Technology
[0002] Air source heat pump units achieve heating by extracting heat energy from the air. Their operating efficiency is closely related to the quality of the intake air. In order to ensure the cleanliness of the unit and reduce dust accumulation, a high-efficiency air filtration mechanism needs to be integrated into the air intake components to remove dust from the intake air and ensure that the gas delivered to the unit is clean, thereby maintaining the stability of system performance and extending the equipment life.
[0003] Existing technologies disclose several invention patents in the field of air source heat pump unit technology. Among them, invention patent CN202422261821.2 discloses a noise-reducing and sound-insulating air source heat pump unit, relating to the field of air source heat pump unit technology. It includes a front cover assembly and an air source heat pump body. The air source heat pump body is installed inside the front cover assembly, and a movable plate is connected to one side of the front cover assembly. A base assembly is installed at the bottom of the front cover assembly, and a back panel assembly is connected to the rear side of the front cover assembly. Simultaneously, wall-mounting components are symmetrically installed vertically on the side of the back panel assembly away from the front cover assembly. This noise-reducing and sound-insulating air source heat pump unit, through the internal structure of the front cover body... The wall is equipped with sound-absorbing pads and vibration damping plates, and a sound-absorbing mesh frame is installed on one side of the main body of the back panel. Combined with the movable plate, it can provide noise reduction and sound insulation for the operation of the air source heat pump as much as possible, reducing noise pollution from the unit's operation. In addition, through the use of the base assembly and wall mounting brackets, the entire unit can be fixed to the wall or the ground according to the usage needs. During winter operation, the unit needs to start the reverse defrosting program according to the set cycle. At this time, the four-way reversing valve will make a noticeable clicking mechanical sound when switching. At the same time, due to the change of operating mode, the compressor and fan load will be briefly adjusted, which may also cause fluctuations in noise level.
[0004] Based on this, the present invention designs a noise-reducing and sound-insulating air source heat pump unit to solve the above problems. Summary of the Invention
[0005] To overcome the shortcomings of existing technologies, this invention proposes a noise-reducing and sound-insulating air-source heat pump unit. This invention primarily addresses the issue that during winter operation, the unit needs to initiate a reverse defrosting program at set intervals. During this time, the four-way reversing valve switching produces a noticeable clicking mechanical sound. Simultaneously, due to the change in operating mode, the compressor and fan loads may undergo brief adjustments, potentially leading to fluctuations in noise levels.
[0006] The technical solution adopted by the present invention to solve its technical problem is: a noise reduction and sound insulation air source heat pump unit, including an air source heat pump unit body; on the top of the air source heat pump unit body, a sound insulation cover is connected to a plurality of air inlets respectively, and all the sound insulation covers are connected to the same No. 1 diversion pipe, which is also connected to a heat insulation pipe. A heating box is provided on one side of the air source heat pump unit body. A heat collector is installed at the top port of the heating box. An insulation joint is assembled at the rear end of the heating box by a snap-fit method. The other end of the insulation joint is connected to the insulation pipe. Multiple air inlets are opened on the front end face of the heating box.
[0007] Preferably, multiple main flow plates are provided between the bottom of the solar collector and the bottom of the inner wall of the heating box, with adjacent main flow plates arranged in a staggered manner.
[0008] Preferably, a sliding groove is provided on the opposite surface of two adjacent main flow plates, and a secondary flow plate is slidably connected in each sliding groove. A transition frame is connected to the opposite surface of the two secondary flow plates, and a lever shaft is rotatably connected to the inner side of the two transition frames. The near ends of the two lever shafts are sleeved in the same lever sleeve. A transition shaft is connected to the center of the lever sleeve. The bottom end of the transition shaft is rotatably connected to the bottom of the inner wall of the heating box. A first gear is fixedly sleeved on the transition shaft, and the tooth surface of the first gear meshes with a toothed plate. On the side of the heating chamber, there are sliding linkage shafts corresponding to multiple toothed plates. A first electric push rod is installed at the bottom of the heating chamber. The telescopic end of the first electric push rod is connected to a transmission frame. The transmission frame is fixedly sleeved on the linkage shaft and connected to multiple toothed plates through the linkage shaft.
[0009] Preferably, a combination frame is connected to the side of the heating box, and a sensor is installed on the inner side wall of the combination frame.
[0010] Preferably, a base is provided below the heating box, a support column is connected to the top of the base, a first steering shaft is rotatably connected to the top of the support column, a second gear is fixedly sleeved on the first steering shaft, the second gear meshes with a third gear, and a first motor for driving the third gear to rotate is installed on the support column.
[0011] Preferably, a first frame is connected to the top of the first steering shaft, a second steering shaft is rotatably connected to the inner side of the first frame, a second motor for driving the second steering shaft to rotate is installed on the first frame, a second frame is connected to the second steering shaft, and the second frame is connected to the bottom of the heating box.
[0012] Preferably, a filter cartridge is provided on the front surface of the heating box corresponding to the multiple air inlets.
[0013] Preferably, on the inner wall of the heating box, air ducts are respectively provided for multiple air inlets, and an impeller is rotatably connected in each air duct. A rear seat is connected to each impeller at the bottom of the inner wall of the heating box. A toothed ring is provided on the front end face of the rear seat. The toothed ring is connected to the impeller through multiple combined shafts. The impeller has a No. 1 shaft at its center. One end of the No. 1 shaft is connected to the inner wall of the filter cylinder, and the other end is rotatably connected to the rear seat. A No. 5 gear is fixedly sleeved on the No. 1 shaft. The No. 5 gear meshes with the same No. 4 gear between itself and the gear ring. A No. 2 shaft is engaged at the center of the No. 4 gear and is rotatably connected to the rear seat.
[0014] Preferably, each of the multiple air ducts is fitted with a backflush pipe, one end of which extends into the corresponding filter cartridge and has a backflush port facing the filter cartridge. The other ends of each backflush pipe are connected to each other through a No. 2 diversion pipe. The bottom of the heating box is equipped with a second electric push rod and a piston cylinder. A piston head is slidably connected inside the piston cylinder. One end of the piston head is connected to a piston rod, and the other end of the piston rod is connected to the telescopic end of the second electric push rod. The second diversion pipe is also connected to one end of the piston cylinder, and a second one-way valve is installed on the second diversion pipe. The piston cylinder is also connected to a suction pipe near the interface of the second diversion pipe, and a first one-way valve is installed on the suction pipe.
[0015] Preferably, the air source heat pump unit body is equipped with a compressor, and the compressor is surrounded by a sheet metal soundproof chamber.
[0016] The beneficial effects of this invention are as follows: 1. In this invention, the incoming air is preheated by solar energy, directly increasing the air temperature entering the evaporator of the air source heat pump unit. This fundamentally reduces the probability and rate of frost formation on the heat exchanger surface, reduces the frequent start-stop defrosting cycles caused by frost, and ensures continuous and stable operation of the air source heat pump unit in low-temperature environments. Utilizing free solar energy for auxiliary heating significantly reduces the energy consumption of the unit for electric auxiliary heating or reverse defrosting, improving the overall energy efficiency ratio of the system. Furthermore, the reduced number of defrosting cycles avoids the intermittent operating noise caused by reverse defrosting and frequent fan start-stop, making the air source heat pump unit operate more smoothly and quietly, achieving a dual optimization of energy saving and efficiency improvement with noise reduction.
[0017] 2. In this invention, by staggering the main guide vanes, a meandering flow channel is formed within a limited space, forcing air to fully contact the heat collection surface and improving the preheating effect. Based on the outdoor temperature, the flow channel length and resistance are dynamically adjusted through the intelligent extension and retraction of the secondary guide vanes. At low temperatures, the flow path is extended to enhance heat exchange; at high temperatures, the flow path is shortened to reduce wind resistance, achieving optimal operation throughout the year. The flow channel structure, through optimized airflow organization, effectively reduces turbulence and eddy noise, making airflow smoother and significantly reducing operating noise caused by wind resistance. Simultaneously, because the flow channel is adjustable, it avoids the airflow impact noise caused by sudden changes in wind resistance in traditional fixed structures under varying operating conditions, allowing the air source heat pump unit to maintain a lower sound pressure level throughout the day, achieving dual optimization of efficient heat exchange and quiet operation.
[0018] 3. In this invention, the solar collector is aligned with the sun in real time by using a light intensity sensor and two dual-drive motors for horizontal and vertical directions, which significantly improves the heat gain of the solar collector. The tracking mode is intelligently adjusted according to the light intensity, which reduces the energy consumption of the drive system itself while ensuring the heat collection efficiency.
[0019] 4. In this invention, the soundproof cover and the No. 1 diversion pipe in the air inlet channel absorb and block airflow noise. The clean air inlet and flow channel reduce the additional noise caused by turbulence and high fan load. The airflow energy of the inlet air drives the filter cartridge to rotate, and the centrifugal force automatically removes dust, delaying blockage. The piston mechanism generates pulse airflow to periodically and intermittently back-flush the filter cartridge, which can be deeply cleaned without stopping the machine for disassembly. The self-cleaning mechanism ensures that the filtration system is in a low-resistance state for a long time, stabilizes the fan load, further reduces energy consumption and noise, and avoids the decrease in heat exchange efficiency caused by dirt blockage.
[0020] 5. In this invention, the pre-filter effectively prevents dust from accumulating in the evaporator and air duct, ensuring long-term high-efficiency heat exchange performance and smooth airflow. It highly integrates multiple functional modules such as preheating, airflow guidance, light tracking, filtration, and self-cleaning, and achieves automatic control through sensors and actuators, reducing the frequency of manual intervention and maintenance.
[0021] 6. In this invention, the core noise reduction principle of the sheet metal anechoic chamber lies in constructing a closed cavity, which forces the airflow or sound waves propagating there to expand, reflect, and interfere within the cavity, thereby consuming sound energy in the process and effectively blocking and reducing noise radiated outward. Attached Figure Description
[0022] The invention will now be further described with reference to the accompanying drawings.
[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the heating box in this invention, viewed from below. Figure 3 This is a schematic diagram of the internal structure of the heating box in this invention; Figure 4 This is the present invention. Figure 2 A schematic diagram of the three-dimensional structure from another perspective; Figure 5 This is a cross-sectional view of the heating box in this invention. Figure 6 This is a cross-sectional view of the piston cylinder in this invention; Figure 7 This is the present invention. Figure 5 Enlarged structural diagram at point A; Figure 8 This is the present invention. Figure 6 Enlarged structural diagram at point B; Figure 9 This is the present invention. Figure 4 Enlarged structural diagram at point C; Figure 10 This is the present invention. Figure 6 Enlarged structural diagram at point D; Figure 11 This is a schematic diagram of the sheet metal sound-absorbing chamber of the present invention; In the diagram: 1. Air source heat pump unit body; 2. Sound insulation cover; 3. No. 1 branch pipe; 4. Insulation pipe; 5. Heating box; 6. Solar collector; 7. Insulation joint; 8. Main guide vane; 9. Slide groove; 10. Secondary guide vane; 11. Adapter frame; 12. Lever shaft; 13. Lever sleeve; 14. Adapter shaft; 15. No. 1 gear; 16. Gear plate; 17. Linkage shaft; 18. Transmission frame; 19. No. 1 electric push rod; 20. Assembly frame; 21. Sensor; 22. Base; 23. Support column; 24. No. 1 steering shaft; 25. No. 2 gear; 26. No. 3 gear; 27. No. 1 motor. 28. Frame 1; 29. Steering Shaft 2; 30. Motor 2; 31. Frame 2; 32. Filter Cartridge; 33. Air Duct; 34. Impeller; 35. Rear Seat; 36. Gear Ring; 37. Combined Shaft; 38. Gear 4; 39. Gear 5; 40. Wheel Shaft 1; 41. Backflush Pipe; 42. Diverter Pipe 2; 43. Piston Cylinder; 44. Piston Head; 45. Piston Rod; 46. Electric Push Rod 2; 47. Suction Pipe; 48. One-Way Valve 1; 49. One-Way Valve 2; 50. Air Inlet; 51. Wheel Shaft 2; 52. Compressor; 53. Sheet Metal Silencing Chamber. Detailed Implementation
[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.
[0025] like Figures 1 to 11As shown, a noise reduction and sound insulation air source heat pump unit includes an air source heat pump unit body 1; on the top of the air source heat pump unit body 1, a sound insulation cover 2 is connected to a plurality of air inlets respectively, and all the sound insulation covers 2 are connected to the same No. 1 diversion pipe 3, which is also connected to a heat insulation pipe 4. A heating box 5 is provided on one side of the air source heat pump unit body 1. A collector 6 is installed at the top port of the heating box 5. An insulation joint 7 is assembled at the rear end of the heating box 5 by a snap-fit method. The other end of the insulation joint 7 is connected to the insulation pipe 4. Multiple air inlets 50 are opened on the front end face of the heating box 5.
[0026] Specifically, this embodiment is as follows: When the air source heat pump unit 1 is in operation, its multiple air inlets generate suction. This suction is sequentially transferred to the interior of the heating box 5 through the No. 1 diversion pipe 3, the insulation pipe 4, and the insulation joint 7. External air enters the box through multiple air inlets 50 on the heating box 5. During the flow through the heating box 5, the solar collector 6 converts the absorbed solar energy into heat energy to heat the air inside the box. The heated air then passes through the insulation joint 7, the insulation pipe 4, the No. 1 diversion pipe 3, and each sound insulation cover 2, and is finally drawn into the interior of the air source heat pump unit 1. By preheating the air entering the unit, the probability of frost formation on the heat exchanger surface is effectively reduced, improving the unit's operational stability and energy efficiency under low-temperature conditions. The sound insulation cover 2 and the diversion structure installed in the air inlet channel can absorb and block some airflow noise, reducing the overall aerodynamic noise of the air source heat pump unit 1 during operation. The use of solar energy to assist in heating the incoming air reduces the unit's own defrosting energy consumption, achieving energy-saving operation.
[0027] Specifically, multiple main flow plates 8 are provided between the bottom of the collector 6 and the bottom of the inner wall of the heating box 5, with adjacent main flow plates 8 arranged in a staggered manner.
[0028] Specifically, this embodiment involves multiple main flow plates 8 positioned between the bottom of the solar collector 6 and the bottom of the inner wall of the heating chamber 5. Adjacent main flow plates 8 are staggered, creating a meandering airflow channel within the heating chamber 5. The staggered main flow plates 8 guide the air to flow along a tortuous path within the heating chamber 5, effectively extending the contact time between the air and the solar collector 6 and the inner wall of the heating chamber 5. During this longer flow process, the air fully absorbs the heat released by the solar collector 6, further increasing the outlet air temperature. The optimized airflow organization is achieved through the rational layout of the flow plates within a limited space, enhancing the overall preheating effect.
[0029] Specifically, grooves 9 are provided on the opposite surfaces of two adjacent main flow plates 8. A secondary flow plate 10 is slidably connected in each groove 9. A transition frame 11 is connected to the opposite surfaces of the two secondary flow plates 10. A lever shaft 12 is rotatably connected to the inner side of the two transition frames 11. The near ends of the two lever shafts 12 are sleeved in the same lever sleeve 13. A transition shaft 14 is connected to the center of the lever sleeve 13. The bottom end of the transition shaft 14 is rotatably connected to the bottom of the inner wall of the heating box 5. A first gear 15 is fixedly sleeved on the transition shaft 14. The tooth surface of the first gear 15 meshes with a toothed plate 16. On the side of the heating box 5, there are sliding linkage shafts 17 corresponding to multiple toothed plates 16. A first electric push rod 19 is installed at the bottom of the heating box 5. The telescopic end of the first electric push rod 19 is connected to a transmission frame 18. The transmission frame 18 is fixedly sleeved on the linkage shaft 17 and connected to multiple toothed plates 16 through the linkage shaft 17.
[0030] Specifically, when the outdoor temperature is low, the first electric push rod 19 is controlled to extend, pushing the linkage shaft 17 and driving multiple toothed plates 16 to move synchronously. Each toothed plate 16 drives the corresponding first gear 15 to rotate, converting the linear motion of the toothed plate 16 into the rotational torque of the adapter shaft 14. The adapter shaft 14 drives the lever sleeve 13 to change its tilt angle, and then the two lever shafts 12 apply opposite thrusts to the adapter frames 11 on both sides, causing the secondary guide plate 10 to extend outward along the groove 9 on the main guide plate 8, thereby increasing the airflow area of the main guide plate 8. When the outdoor temperature is high, the first electric push rod 19 is controlled to return, driving the toothed plate 16 to move in the opposite direction, causing the secondary guide plate 10 to retract into the groove 9, reducing the area compensation on the main guide plate 8. According to the change of outdoor temperature, the extension of the secondary guide plate 10 is dynamically adjusted, flexibly controlling the flow and resistance of the airflow in the heating box 5. Under low temperature conditions, the airflow path is extended, increasing the heat exchange time between the air and the collector 6, increasing the intake air temperature, and effectively suppressing frost. When the temperature is high, the secondary guide plate 10 is retracted to reduce airflow resistance, reduce the load on the air intake side of the unit, and achieve energy-saving operation.
[0031] Specifically, a combination frame 20 is connected to the side of the heating box 5, and a sensor 21 is installed on the inner wall of the combination frame 20. A base 22 is set below the heating box 5, and a support column 23 is connected to the top of the base 22. A first steering shaft 24 is rotatably connected to the top of the support column 23. A second gear 25 is fixedly sleeved on the first steering shaft 24. The second gear 25 meshes with a third gear 26. A first motor 27 for driving the third gear 26 is installed on the support column 23. A first frame 28 is connected to the top of the first steering shaft 24. A second steering shaft 29 is rotatably connected to the inner side of the first frame 28. A second motor 30 for driving the second steering shaft 29 is installed on the first frame 28. A second frame 31 is connected to the second steering shaft 29 and is connected to the bottom of the heating box 5.
[0032] Specifically, this implementation involves the system using sensor 21 to detect the real-time light intensity received by collector 6, and issuing corresponding control commands to motor 27 and motor 30 based on the monitoring data. After motor 27 starts, its output shaft drives gear 26, transmitting torque to gear 25, which in turn rotates steering shaft 24, enabling collector 6 to track its position in the horizontal direction. After motor 30 starts, its output shaft drives steering shaft 29, which, through frame 31, adjusts the pitch angle of collector 6 to adapt to changes in solar altitude. Through this coordinated motion, collector 6 can maintain its alignment with the sun's position. Highly efficient tracking, through light intensity detection and dual-axis drive, enables real-time and precise adjustment of the azimuth and pitch of collector 6, significantly improving solar energy capture efficiency. The tracking action is dynamically adjusted according to the actual light intensity, maintaining tracking stability under low light conditions and maximizing energy collection under strong light conditions. The horizontal rotation and pitch movements are independently driven by motor 27 and motor 30 respectively, with clear control logic and reliable operation, ensuring that collector 6 is always in the optimal light-receiving posture. The angle of collector 6 is dynamically adjusted according to outdoor light and temperature conditions, which can efficiently preheat and prevent frost under low temperature and strong light conditions, and reduce wind resistance and tracking energy consumption under high temperature or low light conditions, achieving year-round adaptive energy-saving operation.
[0033] Specifically, on the front face of the heating box 5, filter cartridges 32 are respectively provided for multiple air inlets 50.
[0034] Specifically, in this embodiment, before air enters the heating box 5 through multiple air inlets 50, it first flows through the filter cartridge 32 for filtration, effectively trapping dust and other impurities carried in the air. This prevents dust from accumulating on the surface of the evaporator inside the air source heat pump unit body 1, avoiding the impact of dirt accumulation on its heat dissipation performance and airflow, maintaining the unit's efficient heat exchange. By keeping the air inlet clean, the resistance of the evaporator side air duct is reduced, thereby reducing the operating load of the built-in fan, which helps to save fan energy consumption, reduce the additional aerodynamic noise caused by increased fan load and intensified airflow turbulence due to blockage or dust adhesion, and improve the overall quietness of the air source heat pump unit body 1.
[0035] Specifically, on the inner wall of the heating box 5, air ducts 33 are respectively provided for multiple air inlets 50, and an impeller 34 is rotatably connected in each air duct 33. At the bottom of the inner wall of the heating box 5, a rear seat 35 is connected to each impeller 34. A toothed ring 36 is provided on the front end face of the rear seat 35. The toothed ring 36 and the impeller 34 are connected by multiple combined shafts 37. A first shaft 40 is provided at the shaft center of the impeller 34. One end of the first shaft 40 is connected to the inner wall of the filter cylinder 32, and the other end is rotatably connected to the rear seat 35. A fifth gear 39 is fixedly sleeved on the first shaft 40. The fifth gear 39 and the gear ring 36 are meshed with the same fourth gear 38. A second shaft 51 is snapped at the shaft center of the fourth gear 38. The second shaft 51 is rotatably connected to the rear seat 35.
[0036] Specifically, in this embodiment, when air flows through the duct 33, it drives the impeller 34 to rotate rapidly. The impeller 34 drives the gear ring 36 to rotate synchronously through multiple combined shafts 37. The gear ring 36 transmits torque to the meshing fourth gear 38, which in turn drives the fifth gear 39 to rotate. Finally, the first wheel shaft 40 drives the filter cartridge 32 to rotate at high speed. The filter cartridge 32 rotates continuously while filtering the air, and the centrifugal force generated can effectively remove the dust attached to its surface, thereby achieving a certain degree of self-cleaning. The airflow energy of the intake air drives the filter cartridge 32 to rotate, and the centrifugal force achieves continuous self-cleaning, effectively delaying filter cartridge clogging and maintaining long-term stable filtration performance. The stable filtration state keeps the intake air resistance at a low level, which helps to reduce the fan load and reduce the additional noise and energy consumption caused by the increase in air resistance. The clean intake air can prevent dust from accumulating in the evaporator and air duct, which reduces airflow noise and ensures heat exchange efficiency, thus providing long-term assistance for the overall noise reduction and stable operation of the unit.
[0037] Specifically, multiple air ducts 33 are each fitted with a backflush pipe 41. One end of the backflush pipe 41 extends into the corresponding filter cartridge 32 and has a backflush port facing the filter cartridge 32. The other end of each backflush pipe 41 is connected to each other through a No. 2 diversion pipe 42. The bottom of the heating box 5 is equipped with a second electric push rod 46 and a piston cylinder 43. A piston head 44 is slidably connected inside the piston cylinder 43. One end of the piston head 44 is connected to a piston rod 45. The other end of the piston rod 45 is connected to the telescopic end of the second electric push rod 46. The second diversion pipe 42 is also connected to one end of the piston cylinder 43. A second one-way valve 49 is installed on the second diversion pipe 42. The piston cylinder 43 is also connected to a suction pipe 47 near the interface of the second diversion pipe 42. A first one-way valve 48 is installed on the suction pipe 47.
[0038] Specifically, this implementation involves controlling the second electric push rod 46 to retract, with its extension end driving the piston head 44 to retract via the piston rod 45, creating a negative pressure inside the piston cylinder 43. At this time, the first one-way valve 48 opens, and air from the heating chamber 5 is drawn into the piston cylinder 43 through the suction pipe 47. Subsequently, the second electric push rod 46 is controlled to extend, pushing the piston head 44 forward via the piston rod 45, increasing the pressure inside the piston cylinder 43. The first one-way valve 48 closes, and the second one-way valve 49 opens, allowing the air inside the cylinder to be diverted to various reactors via the second diversion pipe 42. The blower 41 ultimately ejects at high speed from the backflush port to backflush the filter cartridge 32. The piston mechanism forms a pulsed airflow, achieving backflush cleaning of the filter cartridge 32 without stopping or disassembling the machine. This effectively removes accumulated dust. The piston head 44 is directly driven by the second electric push rod 46, resulting in fast response and precise control. No additional air source is required, and the system has a high degree of integration. Regular or on-demand backflush can maintain the filter cartridge 32 in a low-resistance state for a long time, ensuring smooth air intake, thereby stabilizing the fan load, reducing airflow noise, and reducing the decrease in heat exchange efficiency caused by blockage.
[0039] Specifically, the air source heat pump unit body 1 is equipped with a compressor 52 inside, and the compressor 52 is surrounded by a sheet metal soundproof chamber 53.
[0040] Specifically, the core function of the sheet metal silencing chamber 53 is to attenuate the noise generated by airflow or mechanical components by constructing a closed cavity. When the gas or mechanical noise inside the compressor 52 enters these sealed cavities during propagation, the airflow will expand, reflect and interfere. The energy of the sound wave is consumed and weakened in this process, thereby significantly reducing the noise ultimately radiated outward.
[0041] During operation, when the air source heat pump unit 1 is running, the suction generated by multiple air inlets is sequentially transferred to the interior of the heating box 5 through the No. 1 diversion pipe 3, the insulation pipe 4, and the insulation joint 7. External air enters the heating box 5 through multiple air inlets 50. During the flow, the solar collector 6 converts the absorbed solar energy into heat energy to heat the air inside the heating box 5. The heated air then passes through the insulation joint 7, the insulation pipe 4, the No. 1 diversion pipe 3, and each sound insulation cover 2 before finally being drawn into the interior of the air source heat pump unit 1. This process preheats the air entering the air source heat pump unit 1, effectively reducing the probability of frost formation on the heat exchanger surface and improving the operational stability and energy efficiency of the air source heat pump unit 1 under low-temperature conditions. The sound insulation cover 2 and the No. 1 diversion pipe 3 installed in the air inlet channel can absorb and block some airflow noise, reducing the overall aerodynamic noise of the air source heat pump unit 1. The system uses solar energy to assist in heating the incoming air, reducing the defrosting energy consumption of the air source heat pump unit 1 itself and achieving energy-saving operation. Multiple main flow plates 8 are provided between the bottom of the solar collector 6 and the bottom of the inner wall of the heating box 5. The adjacent main flow plates 8 are staggered, forming a meandering airflow channel in the heating box 5. The staggered main flow plates 8 guide the air to flow along a tortuous path, prolonging the contact time between the air and the solar collector 6 and the inner wall of the heating box 5, so that the air can fully absorb heat during the flow process, further increasing the outlet air temperature. This achieves optimized airflow organization in a limited space and enhances the overall preheating effect. When the outdoor temperature is low, the first electric push rod 19 is extended, pushing the linkage shaft 17 and causing multiple toothed plates 16 to move synchronously. Each toothed plate 16 drives the corresponding first gear 15 to rotate, converting the linear motion of the toothed plate 16 into the rotational torque of the adapter shaft 14. The adapter shaft 14 drives the lever sleeve 13 to change its tilt angle, and then applies opposite thrusts to the adapter frames 11 on both sides through the two lever shafts 12, causing the secondary guide plate 10 to extend outward along the groove 9 on the main guide plate 8, thereby increasing the airflow guiding area of the main guide plate 8. When the outdoor temperature is high, the first electric push rod 19 is controlled to return to its original position, which drives the toothed plate 16 to move in the opposite direction, causing the secondary guide plate 10 to retract into the slide groove 9, reducing the area compensation on the main guide plate 8. The system dynamically adjusts the extension of the secondary guide plate 10 according to the change of outdoor temperature, flexibly controlling the flow and resistance of the airflow in the heating box 5. Under low temperature conditions, it extends the airflow path, increases the heat exchange time, increases the intake air temperature, and effectively suppresses frost formation. When the temperature is high, it retracts the secondary guide plate 10 to reduce airflow resistance, reduce the load on the air intake side of the unit, and achieve energy-saving operation. The system uses sensor 21 to detect the real-time light intensity received by collector 6 and sends corresponding control commands to motors 27 and 30 based on the monitoring data. After motor 27 starts, its output shaft drives gear 26, transmitting torque to gear 25, which in turn rotates steering shaft 24, enabling collector 6 to track its position horizontally. After motor 30 starts, its output shaft drives steering shaft 29, which, through frame 31, adjusts the pitch angle of collector 6 to adapt to changes in solar altitude. Through this coordinated movement, collector 6 can maintain efficient tracking of the sun's position. Through light intensity detection and dual-axis drive, the solar collector 6 achieves real-time and precise adjustment of its position and pitch, significantly improving solar energy capture efficiency. The tracking action is dynamically adjusted according to the actual light intensity, maintaining tracking stability under low light conditions and maximizing energy collection under strong light conditions. The horizontal rotation and pitch movements are independently driven by motor 27 and motor 30, respectively. The control logic is clear and the operation is reliable, ensuring that the solar collector 6 is always in the best light-receiving posture. The system dynamically adjusts the angle of the solar collector 6 according to outdoor light and temperature conditions, which can efficiently preheat and prevent frost under low temperature and strong light conditions, and reduce wind resistance and tracking energy consumption under high temperature or low light conditions, achieving adaptive energy-saving operation throughout the year. Before entering the heating box 5 through multiple air inlets 50, the air first flows through the filter cartridge 32 for filtration, effectively trapping dust and other impurities carried in the air, preventing dust from accumulating on the surface of the evaporator inside the air source heat pump unit 1, avoiding the impact of dirt accumulation on its heat dissipation performance and airflow, maintaining the efficient heat exchange of the air source heat pump unit 1, reducing the resistance of the evaporator side air duct by keeping the air intake clean, thereby reducing the operating load of the built-in fan, helping to save fan energy consumption, and reducing the additional aerodynamic noise caused by increased fan load and intensified airflow turbulence due to blockage or dust adhesion, thus improving the overall quietness of the air source heat pump unit 1. When air flows through the duct 33, it drives the impeller 34 to rotate rapidly. The impeller 34 drives the gear ring 36 to rotate synchronously through multiple combined shafts 37. The gear ring 36 transmits torque to the meshing gear 4 38, which in turn drives the gear 5 39 to rotate. Finally, the gear ring 36 drives the filter cartridge 32 to rotate at high speed through the gear shaft 40. The filter cartridge 32 rotates continuously while filtering the air. The centrifugal force generated can effectively remove the dust attached to its surface, thereby achieving a certain degree of self-cleaning. The filter cartridge 32 is driven to rotate by the inlet airflow energy and achieves continuous self-cleaning through centrifugal force, which effectively delays filter cartridge clogging and maintains long-term stable filtration performance. The stable filtration state keeps the inlet air resistance at a low level, which helps to reduce the fan load and reduce the additional noise and energy consumption caused by the increase in air resistance. The clean inlet air can prevent dust from accumulating in the evaporator and duct, which reduces airflow noise and ensures heat exchange efficiency, thus providing long-term assistance to the overall noise reduction and stable operation of the unit. The second electric push rod 46 is controlled to retract, and its extension end drives the piston head 44 to retract via the piston rod 45, creating a negative pressure inside the piston cylinder 43. At this time, the first one-way valve 48 opens, and air from the heating box 5 is drawn into the piston cylinder 43 through the suction pipe 47. Then, the second electric push rod 46 is controlled to extend, pushing the piston head 44 forward via the piston rod 45, increasing the pressure inside the piston cylinder 43. The first one-way valve 48 closes, and the second one-way valve 49 opens, allowing the air inside the cylinder to be diverted to each backflush pipe 41 via the second diversion pipe 42. Finally, the air is ejected at high speed from the backflush port to backflush the filter cartridge 32. The piston forms a pulsed airflow, which can achieve backflush cleaning of the filter cartridge 32 without stopping or disassembling the machine. This effectively removes the accumulated dust. The piston head 44 is directly driven by the second electric push rod 46. The action is fast and the control is precise. No additional air source is required. The system has a high degree of integration. Regular or on-demand backflush can keep the filter cartridge 32 in a low-resistance state for a long time, ensuring smooth air intake, thereby stabilizing the fan load, reducing airflow noise, and reducing the decrease in heat exchange efficiency caused by blockage.
[0042] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.
Claims
1. A noise-reducing and sound-insulating air source heat pump unit, comprising an air source heat pump unit body (1); characterized in that: At the top of the air source heat pump unit body (1), a soundproof cover (2) is connected to each of its multiple air inlets. All the soundproof covers (2) are connected to the same No. 1 diversion pipe (3). The No. 1 diversion pipe (3) is also connected to a heat insulation pipe (4). A heating box (5) is provided on one side of the air source heat pump unit body (1). A heat collector (6) is installed at the top port of the heating box (5). An insulation connector (7) is assembled at the rear end of the heating box (5) by a snap-fit method. The other end of the insulation connector (7) is connected to the insulation pipe (4). Multiple air inlets (50) are opened on the front end face of the heating box (5).
2. The noise-reducing and sound-insulating air source heat pump unit according to claim 1, characterized in that: Multiple main flow plates (8) are provided between the bottom of the collector (6) and the bottom of the inner wall of the heating box (5), and adjacent main flow plates (8) are arranged in a staggered manner.
3. The noise-reducing and sound-insulating air source heat pump unit according to claim 2, characterized in that: Slide grooves (9) are provided on the opposite surfaces of two adjacent main flow plates (8). A secondary flow plate (10) is slidably connected in each slide groove (9). A transition frame (11) is connected to the opposite surfaces of the two secondary flow plates (10). A lever shaft (12) is rotatably connected to the inner side of the two transition frames (11). The two lever shafts (12) are sleeved in the same lever sleeve (13) with their close ends connected to the same lever sleeve (13). A transition shaft (14) is connected to the center of the lever sleeve (13). The bottom end of the transition shaft (14) is rotatably connected to the bottom of the inner wall of the heating box (5). A first gear (15) is fixedly sleeved on the transition shaft (14). The tooth surface of the first gear (15) meshes with a toothed plate (16). On the side of the heating box (5), there is a sliding linkage shaft (17) corresponding to multiple toothed plates (16). A first electric push rod (19) is installed at the bottom of the heating box (5). The telescopic end of the first electric push rod (19) is connected to a transmission frame (18). The transmission frame (18) is fixedly sleeved on the linkage shaft (17) and connected to multiple toothed plates (16) through the linkage shaft (17).
4. The noise-reducing and sound-insulating air source heat pump unit according to claim 3, characterized in that: The heating box (5) is connected to a combination frame (20) on its side, and a sensor (21) is installed on the inner wall of the combination frame (20).
5. The noise-reducing and sound-insulating air source heat pump unit according to claim 4, characterized in that: A base (22) is provided below the heating box (5). A support column (23) is connected to the top of the base (22). A first steering shaft (24) is rotatably connected to the top of the support column (23). A second gear (25) is fixedly sleeved on the first steering shaft (24). The second gear (25) meshes with the third gear (26). A first motor (27) for driving the third gear (26) to rotate is installed on the support column (23).
6. The noise-reducing and sound-insulating air source heat pump unit according to claim 5, characterized in that: The top of the first steering shaft (24) is connected to the first frame (28), and the second steering shaft (29) is rotatably connected to the inner side of the first frame (28). The first frame (28) is equipped with a second motor (30) for driving the second steering shaft (29) to rotate. The second steering shaft (29) is connected to the second frame (31), and the second frame (31) is connected to the bottom of the heating box (5).
7. The noise-reducing and sound-insulating air-source heat pump unit according to claim 6, characterized in that: On the front end face of the heating box (5), filter cartridges (32) are respectively provided corresponding to multiple air inlets (50).
8. The noise-reducing and sound-insulating air source heat pump unit according to claim 7, characterized in that: On the inner wall of the heating box (5), air ducts (33) are respectively provided for multiple air inlets (50), and an impeller (34) is rotatably connected in each air duct (33). A rear seat (35) is connected to each impeller (34) at the bottom of the inner wall of the heating box (5). A toothed ring (36) is provided on the front end face of the rear seat (35). The toothed ring (36) is connected to the impeller (34) through multiple combined shafts (37). The impeller (34) has a first wheel shaft (40) at its shaft center. One end of the first wheel shaft (40) is connected to the inner wall of the filter cylinder (32), and the other end is rotatably connected to the rear seat (35). A fifth gear (39) is fixedly sleeved on the first wheel shaft (40). The fifth gear (39) and the gear ring (36) are meshed with the same fourth gear (38). A second wheel shaft (51) is snapped at the shaft center of the fourth gear (38). The second wheel shaft (51) is rotatably connected to the rear seat (35).
9. The noise-reducing and sound-insulating air source heat pump unit according to claim 8, characterized in that: Each of the multiple air ducts (33) is fitted with a backflush pipe (41). One end of the backflush pipe (41) extends into the corresponding filter cylinder (32) and has a backflush port facing the filter cylinder (32). The other end of each backflush pipe (41) is connected to each other through a No. 2 diversion pipe (42). The bottom of the heating box (5) is equipped with a second electric push rod (46) and a piston cylinder (43). A piston head (44) is slidably connected inside the piston cylinder (43). One end of the piston head (44) is connected to a piston rod (45). The other end of the piston rod (45) is connected to the telescopic end of the second electric push rod (46). The second diversion pipe (42) is also connected to one end of the piston cylinder (43). A second one-way valve (49) is installed on the second diversion pipe (42). The piston cylinder (43) is also connected to a suction pipe (47) near the interface of the second diversion pipe (42). A first one-way valve (48) is installed on the suction pipe (47).
10. A noise-reducing and sound-insulating air-source heat pump unit according to claim 9, characterized in that: The air source heat pump unit body (1) is equipped with a compressor (52) inside, and the compressor (52) is surrounded by a sheet metal soundproof chamber (53).