Noise reduction air source heat pump

Abstract

The invention provides a noise reduction air source heat pump which comprises a movable frame, an air source heat pump body and a sound insulation cover are arranged on the movable frame, the air source heat pump body is located in the sound insulation cover, the top of the air source heat pump body penetrates out of the sound insulation cover, first noise reduction holes are evenly formed in the inner side face of the sound insulation cover, and a sound insulation space is formed in the sound insulation cover. The sound insulation space is filled with sound insulation cotton. Compared with the prior art, the noise reduction device has the following beneficial effects that the semicircular sound insulation cover, the I-shaped sound inlet barrel and the combined noise reduction piece of the cross frame are arranged in the air inlet and outlet frame, and multiple times of refraction and attenuation of sound waves are achieved through the multiple layers of noise reduction holes, namely, the second noise reduction hole, the third noise reduction hole and the fourth noise reduction hole; the sound wave propagation path can be prolonged through the structure of the I-shaped sound inlet barrel, the sound wave energy is further segmented through the cross frame, multi-stage filtering of airflow noise and equipment operation noise is achieved in cooperation with the sound insulation material, the noise reduction effect of the air inlet and outlet channel is greatly improved, and finally the noise reduction function of the air source heat pump is achieved.

Description

Technical Field

[0001] This invention is a noise-reducing air source heat pump, belonging to the field of air source heat pump technology. Background Technology

[0002] Air source heat pumps, as a highly efficient and energy-saving heating and cooling device, are widely used in various scenarios such as residential buildings, commercial buildings, and industrial plants due to their advantages of high energy utilization and environmental friendliness, providing users with a stable supply of heating and cooling. However, with people's increasing demands for quality of life and comfortable working environments, the noise generated during equipment operation has gradually become one of the key factors restricting its further widespread application.

[0003] The noise of an air source heat pump mainly comes from two sources: Firstly, the operating noise of the core components inside the equipment, such as the mechanical vibration noise of the compressor and the airflow disturbance noise of the fan. This noise radiates outward through the heat pump casing, forming solid-borne and airborne sound. Secondly, there is the airflow noise in the air inlet and outlet channels. When air flows at high speed through the inlet and outlet windows, it collides and rubs against the channel walls, generating turbulence noise. Simultaneously, the airflow causes the surrounding air to vibrate, further aggravating the noise propagation. In noise-sensitive locations such as residences, hospitals, and schools, the noise generated by traditional air source heat pumps often exceeds environmental noise standards, affecting users' daily lives and work.

[0004] To address noise pollution, some noise reduction measures have emerged in existing technologies, such as wrapping the heat pump casing with sound-insulating materials and installing simple silencers at the air inlet and outlet. However, these solutions have significant shortcomings: First, the noise reduction structure design is simplistic, mostly consisting of single-layer sound insulation or silencers, which can only provide limited suppression of noise at specific frequencies. They are insufficient to achieve comprehensive filtering of equipment operating noise and airflow noise, resulting in poor noise reduction. Second, the use of simple dustproof structures in the air inlet and outlet channels cannot effectively reduce noise, easily leading to dust accumulation and affecting the long-term stable operation of the equipment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a noise-reducing air source heat pump.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: A noise-reducing air source heat pump includes a mobile frame on which an air source heat pump body and a soundproof cover are mounted. The air source heat pump body is located inside the soundproof cover, with its top protruding outside. Noise-reducing holes are evenly distributed on the inner side of the soundproof cover. The soundproof cover contains a soundproof space filled with sound-absorbing cotton. The air source heat pump body has an air inlet window and an air outlet window. An air inlet frame and an air outlet frame are also installed on the air source heat pump body. The air inlet frame is located on the outer side of the air source heat pump body, with the air inlet window located inside the air inlet frame. The air outlet frame is located on the top of the air source heat pump body. At the end face, the air outlet window is located inside the exhaust frame. Dustproof frame components are installed on the inner side of the outer opening of the air inlet frame and the air outlet frame. Noise reduction components are also installed inside the air inlet frame and the air outlet frame. The noise reduction components include a semi-circular soundproof cover located inside the air inlet frame and the air outlet frame. Noise reduction holes are evenly arranged on the semi-circular soundproof cover. A sound inlet tube is fixedly installed inside the air inlet frame and the air outlet frame. The sound inlet tube is I-shaped and has noise reduction holes on its inner wall. The semi-circular soundproof cover is fixedly connected to the sound inlet tube. A cross frame is fixedly installed on the semi-circular soundproof cover. Noise reduction holes are evenly arranged on the cross frame.

[0007] Furthermore, a semi-circular soundproof cover is fixed on the sound inlet tube, and noise reduction spaces are formed between the sound inlet tube and the air inlet frame, and between the sound inlet tube and the air outlet frame. A layer of sound-absorbing cotton is pasted on the inner wall of the noise reduction space. A slot is opened on the soundproof cover for the air inlet frame to pass through. The four corners of the bottom of the mobile frame are equipped with moving wheels, and a manual handle is fixed on the outer wall of the soundproof cover.

[0008] Furthermore, the dustproof frame component includes an upper frame and a lower frame, both of which are equipped with dustproof nets on their inner sides. A V-shaped frame is fixed between the upper and lower frames, and an auxiliary dustproof net is provided on the inner side of the V-shaped frame.

[0009] Furthermore, a setting space is provided inside the mobile frame, and a flipping assembly is provided in the setting space. The flipping assembly includes two rotating rods that are rotatably connected inside the setting space by bearings. Mounting seats are fixedly fitted on the outer surfaces of the rotating rods, and the mobile wheels are mounted on the mounting seats.

[0010] Furthermore, the bottom of the space is provided with a flip-out groove for the corresponding moving wheel, and meshing gears are fixed on the rotating rod. A middle gear meshes between the meshing gears. A manual rotating rod is fixed on one end face of the middle gear, and a manual turntable is fixed on the other end of the manual rotating rod.

[0011] Furthermore, a cylinder is fixedly installed on the inner wall of the space, and a secondary bearing is fixedly installed on the inner wall of the cylinder. A manual rotating rod passes through the cylinder and extends out of the mobile frame. The manual rotating rod is connected to the secondary bearing. The manual turntable is fitted against the outer side of the mobile frame. The manual turntable is I-shaped. Two L-shaped positioning plates are fixedly installed on the outer side of the mobile frame. The ends of the L-shaped positioning plates are located inside the manual turntable. Matching locking threaded holes are opened on the L-shaped positioning plates and the manual turntable.

[0012] Furthermore, multiple support legs are fixedly provided at the bottom of the mobile frame, and secondary support legs are slidably sleeved on the support legs. Fixing components are provided on the secondary support legs and the support legs.

[0013] Furthermore, the fastener includes a fixed horizontal plate, with through slots at both ends of the fixed horizontal plate, and a limiting plate passing through the through slots. A threaded rod is fixed at the bottom of the limiting plate, and a locking nut is fixed on the threaded rod. Both the support leg and the secondary support leg are provided with secondary through slots for the fixed horizontal plate to pass through.

[0014] Furthermore, the inner wall of the air source heat pump casing and the inner wall of the soundproof cover are both equipped with sound-absorbing components. The sound-absorbing components include a porous U-shaped sound-absorbing plate, with a V-shaped sound-absorbing sheet fixed inside the sound-absorbing plate. The sound-absorbing sheet has a sound-absorbing hole I evenly distributed on it. A V-shaped secondary sound-absorbing sheet is fixed on the inner wall of the V-shaped sound-absorbing sheet, with a sound-absorbing hole II evenly distributed on it. A sealing cover plate is fixed on the sound-absorbing plate with screws, and a sound-absorbing cotton layer II is provided on the inner side of the sealing cover plate.

[0015] Furthermore, the top of the mobile frame is equipped with multiple vertically arranged shock absorbers and multiple vertical plates. Each vertical plate is fixed with a horizontally arranged secondary shock absorber. The top of the shock absorber is fixed with a support platform. The air source heat pump body is installed on the top of the support platform. The other end of the secondary shock absorber is fixedly connected to the outer wall of the air source heat pump body.

[0016] The beneficial effects of this invention are: The air source heat pump body is mounted on a mobile frame, making it easy to move to a suitable working location. The air intake frame is installed on the outer side of the air source heat pump body, covering the air intake window to silence the incoming air. The exhaust frame is installed on the top surface of the air source heat pump body, covering the air outlet window to silence the outgoing air. The semi-circular soundproof cover is fixed to the sound inlet cylinder as an integral part, and then the corresponding semi-circular soundproof covers are welded inside the air intake and exhaust frames. At this time, a noise reduction space is formed between the semi-circular soundproof cover and the air intake frame, and between the semi-circular soundproof cover and the exhaust frame. Therefore, the semi-circular soundproof cover and the sound-absorbing cotton layer are arranged in the noise reduction space. The sound of the incoming and outgoing air will enter the noise reduction space through the noise reduction hole three for noise reduction treatment.

[0017] Specifically, most of the air source heat pump body is placed inside the soundproof enclosure. Therefore, the mobile frame, air source heat pump body and soundproof enclosure are integrated into one unit, which not only realizes the modular integration of the equipment, but also provides a foundation for subsequent mobile functions, ensuring that the air source heat pump can be easily moved.

[0018] By enclosing the air source heat pump body with a soundproof cover, the noise reduction hole one inside the soundproof cover and the sound insulation cotton inside form the first line of sound insulation. Some of the operating sound generated by the air source heat pump body itself will enter the noise reduction hole one. The sound insulation cotton in the soundproof space can absorb the solid-borne sound and air-borne sound radiated outward by the heat pump body during operation. The noise reduction hole one can weaken the direct propagation of sound waves and initially reduce the overall noise leakage of the equipment.

[0019] By setting up a combination of a semi-circular soundproof cover, an I-shaped sound inlet tube, and a cross-frame noise reduction component within the air inlet and outlet frame, and through multiple layers of noise reduction holes (noise reduction hole two, noise reduction hole three, and noise reduction hole four), sound waves are refracted and attenuated multiple times. The I-shaped sound inlet tube structure can extend the sound wave propagation path, and the cross-frame further divides the sound wave energy. Combined with sound insulation materials, multi-level filtration of airflow noise and equipment operating noise is achieved, significantly improving the noise reduction effect of the air inlet and outlet channel, and ultimately realizing the noise reduction function of the air source heat pump. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view of a noise-reducing air source heat pump according to the present invention; Figure 2 This is a schematic diagram of the air source heat pump body of a noise-reducing air source heat pump according to the present invention; Figure 3 This is a schematic diagram of the air inlet frame of a noise-reducing air source heat pump according to the present invention; Figure 4 This is a schematic diagram of the internal structure of the exhaust frame of a noise-reducing air source heat pump according to the present invention; Figure 5 This is a schematic diagram of the internal air inlet frame of a noise-reducing air source heat pump according to the present invention; Figure 6 This is a schematic diagram of the sound inlet cylinder inside the exhaust frame of a noise-reducing air source heat pump according to the present invention; Figure 7 This is a schematic diagram of the sound inlet cylinder inside the air inlet frame of a noise-reducing air source heat pump according to the present invention; Figure 8This is a schematic diagram of a dustproof frame component for a noise-reducing air source heat pump according to the present invention; Figure 9 This is a schematic diagram of the interior of the mobile frame of a noise-reducing air source heat pump according to the present invention; Figure 10 This is a schematic diagram of the manual turntable of a noise-reducing air source heat pump according to the present invention; Figure 11 This is a schematic diagram of a fixing component for a noise-reducing air source heat pump according to the present invention; Figure 12 This is a schematic diagram of a noise reduction component for a noise-reducing air source heat pump according to the present invention; Figure 13 This is a schematic diagram of a vibration damper for a noise-reducing air source heat pump according to the present invention.

[0022] In the diagram: 1. Mobile frame; 2. Air source heat pump body; 3. Soundproof cover; 4. Air inlet window; 5. Air outlet window; 6. Noise reduction hole one; 7. Soundproof space; 8. Air inlet frame; 9. Air outlet frame; 10. Cylinder; 11. Secondary through slot; 12. Semi-circular soundproof cover; 13. Noise reduction hole two; 14. Sound inlet cylinder; 15. Noise reduction hole three; 16. Cross frame; 17. Noise reduction hole four; 18. Through slot; 19. Moving wheels; 20. Manual handlebar; 21. Upper frame; 22. Lower frame; 23. Dustproof net; 24. V-shaped frame; 25. Secondary dustproof net; 26. Setting space; 27. Bearing; 28. 29. Rotating rod; 30. Mounting base; 31. Flip-out slot; 32. Meshing gear; 33. Central gear; 34. Manual rotating rod; 35. Manual turntable; 36. L-shaped positioning plate; 37. Locking threaded hole; 38. Limiting plate; 39. Threaded rod; 40. Noise reduction space; 41. Sound-absorbing cotton layer one; 42. Sound-absorbing plate; 43. Sound-absorbing diaphragm; 44. Secondary sound-absorbing diaphragm; 45. Secondary sound-absorbing hole; 46. Sealing cover plate; 47. Sound-absorbing cotton layer two; 48. Shock absorber; 49. Vertical plate; 50. Secondary shock absorber; 51. Support platform; 52. Support leg; 53. Secondary support leg; 54. Fixed horizontal plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-13This invention provides a noise-reducing air source heat pump, including a mobile frame 1. An air source heat pump body 2 and a soundproof cover 3 are mounted on the mobile frame 1. The air source heat pump body 2 is located inside the soundproof cover 3, with its top protruding outside the soundproof cover 3. Noise-reducing holes 6 are evenly distributed on the inner side of the soundproof cover 3. The soundproof cover 3 has a soundproof space 7 inside, filled with sound-absorbing cotton. The air source heat pump body 2 has an air inlet window 4 and an air outlet window 5. An air inlet frame 8 and an air outlet frame 9 are also installed on the air source heat pump body 2. The air inlet frame 8 is located on the outer side of the air source heat pump body 2, and the air inlet window 4 is located inside the air inlet frame 8. The air outlet frame 9 is located on the top surface of the air source heat pump body 2. The air outlet window 5 is located inside the exhaust frame 9. Dustproof frame components are installed on the inner side of the outer opening of the air inlet frame 8 and the exhaust frame 9. Noise reduction components are also installed inside the air inlet frame 8 and the exhaust frame 9. The noise reduction components include a semi-circular soundproof cover 12 located inside the air inlet frame 8 and the exhaust frame 9. Noise reduction holes 13 are evenly arranged on the semi-circular soundproof cover 12. A sound inlet tube 14 is fixedly installed inside the air inlet frame 8 and the exhaust frame 9. The sound inlet tube 14 is I-shaped and a noise reduction hole 15 is opened on the inner wall of the sound inlet tube 14. The semi-circular soundproof cover 12 is fixedly connected to the sound inlet tube 14. A cross frame 16 is fixedly installed on the semi-circular soundproof cover 12. Noise reduction holes 17 are evenly opened on the cross frame 16.

[0025] See Figure 1-7 A semi-circular soundproof cover 12 is fixed to the sound inlet tube 14, and noise reduction spaces 39 are formed between the sound inlet tube 14 and the air inlet frame 8, and between the sound inlet tube 14 and the air outlet frame 9, respectively. A sound-absorbing cotton layer 40 is pasted on the inner wall of the noise reduction space 39. The soundproof cover 3 has a slot 18 for the air inlet frame 8 to pass through. Four casters 19 are provided at the bottom corners of the mobile frame 1. The fixing of the semi-circular soundproof cover 12 to the sound inlet tube 14 creates a closed noise reduction space 39 between the two and the air inlet and air outlet frames, preventing noise leakage from the component gaps. Simultaneously, the sound-absorbing cotton layer 40 is pasted on the inner wall of the noise reduction space 39, utilizing the sound-absorbing cotton's... The porous structure absorbs residual noise in the channel, further improving the noise reduction efficiency of the air inlet and outlet channels. A through slot 18 is opened on the soundproof cover 3 to ensure that the air inlet frame 8 can be smoothly inserted into the soundproof cover and accurately docked with the air inlet window 4. This ensures smooth air intake and avoids sound leakage caused by gaps due to interference between the frame and the soundproof cover. The four corners of the bottom of the mobile frame 1 are equipped with moving wheels 19, which, together with the manual handle 20 on the outer wall, allow the entire equipment to be manually pushed to adjust its position. This solves the problem of difficult relocation caused by the large weight and fixed installation of traditional air source heat pumps, and improves the adaptability of the equipment in different usage scenarios.

[0026] See Figure 1 and Figure 8The dustproof frame includes an upper frame 21 and a lower frame 22. Dustproof nets 23 are provided on the inner sides of both the upper frame 21 and the lower frame 22. A V-shaped frame 24 is fixed between the upper frame 21 and the lower frame 22. A secondary dustproof net 25 is provided on the inner side of the V-shaped frame 24. The upper frame 21, the lower frame 22 and the V-shaped frame 24 form a multi-layer dustproof frame. The dustproof nets 23 and the secondary dustproof nets 25 work together to finely filter impurities in the air. The dustproof frame is also fixed with screws to the inner side of the front opening of the air inlet frame 8 and the air outlet frame 9.

[0027] See Figure 1 and Figures 9-11The mobile frame 1 has an inner space 26 for setting up, and a flipping assembly is installed inside the space 26. The flipping assembly includes two rotating rods 28 rotatably connected inside the space 26 via bearings 27. Mounting seats 29 are fixedly fitted onto the outer surfaces of the rotating rods 28. Moving wheels 19 are mounted on the mounting seats 29. A flipping through groove 30 corresponding to the moving wheels 19 is provided at the bottom of the space 26. Meshing gears 31 are fixedly installed on each of the rotating rods 28. A central gear 32 meshes between the meshing gears 31. A manual rotating rod 33 is fixedly installed on one end of the central gear 32, and a manual turntable 34 is fixedly installed on the other end of the manual rotating rod 33. A cylinder 10 is fixedly installed on the inner wall of the space 26. A secondary bearing is fixedly installed on the inner wall. A manual rotating rod 33 passes through the cylinder 10 and exits the movable frame 1. The manual rotating rod 33 is connected to the secondary bearing. A manual turntable 34 is fitted against the outer side of the movable frame 1. The manual turntable 34 is I-shaped. Two L-shaped positioning plates 35 are fixedly installed on the outer side of the movable frame 1. The ends of the L-shaped positioning plates 35 are located inside the manual turntable 34. Matching locking threaded holes 36 are opened on the L-shaped positioning plates 35 and the manual turntable 34. Multiple support legs 52 are fixedly installed at the bottom of the movable frame 1. Secondary support legs 53 are slidably sleeved on the support legs 52. Fixing components are provided on the secondary support legs 53 and the support legs 52. The fixing components include a fixing cross plate 54. Through-holes are opened at both ends of the fixing cross plate 54. A through slot is provided, and a limiting plate 37 is installed inside the through slot. A threaded rod 38 is fixed at the bottom of the limiting plate 37, and a locking nut is fixed on the threaded rod 38. Both the support leg 52 and the auxiliary support leg 53 are provided with auxiliary through slots 11 for the fixed cross plate 54 to pass through. The movable wheel can be flipped and switched through the flipping assembly. Specifically, through the flipping structure of the rotating rod 28 and the mounting base 29, the movable wheel 19 can be flipped out of the slot 30. The movable wheel 19 can be flipped out or in. With the transmission structure of the meshing gear 31 and the middle gear 32, rotating the manual turntable 34 can drive the two rotating rods 28 to rotate synchronously, ensuring that the movable wheels on both sides flip out or in at the same time, avoiding tilting of the equipment due to unilateral flipping, and making the operation efficient and Effortless operation is achieved by having the movable wheels in contact with the ground, making the entire device easy to move. After being flipped, the movable wheels are hidden within the space 26 of the movable frame 1, without affecting the overall compactness of the device structure and avoiding wear caused by the movable wheels being in contact with the ground for a long time. The secondary bearing inside the cylinder 10 works with the bearings 27 at both ends of the rotating rod 28 to reduce the friction when the manual rotating rod 33 is rotated, preventing jamming and improving the operating feel. The I-shaped manual turntable 34 fits into the L-shaped positioning plate 35, and the manual turntable 34 corresponds one-to-one with the locking threaded holes 36 on the L-shaped positioning plate 35. The screw is screwed in to fix the manual turntable 34, aligning it with the preset position for the movable wheels to flip out or in, preventing the flipping components from accidentally loosening when the device is moved or working.

[0028] The transmission ratios of the meshing gear 31 and the middle gear 32 are not the same. The manual turntable 34 and the middle gear 32 rotate 180 degrees, driving the meshing gear 31 to rotate 90 degrees, which in turn drives the rotating rod 28 to rotate 90 degrees, realizing the flip-out switching function of the moving wheel. The moving wheel 19 can be flipped out of the slot 30, and the moving wheel 19 can be flipped out or flipped in. The manual turntable 34 and the middle gear 32 rotate 180 degrees, and the locking thread hole 36 on the manual turntable 34 can still correspond one-to-one with the locking thread hole 36 on the L-shaped positioning plate 35.

[0029] The secondary support leg 53 is slidably sleeved inside the support leg 52. The secondary support leg 53 is in contact with the ground. Therefore, when it is not moving, the entire device is supported by the support leg 52 and the secondary support leg 53. There are multiple secondary support legs 53, so its contact area with the ground is larger. Compared with simply relying on the moving wheel for locking, the stability during operation is stronger, which can reduce the transmission of vibration during the operation of the equipment. The fixed horizontal plate 54 passes through the secondary through groove 11 of the support leg 52 and the secondary support leg 53, and is then fixed by the limiting plate 37, the threaded rod 38 and the locking nut. This can firmly lock the relative position of the two and prevent the secondary support leg 53 from sliding due to vibration during the operation of the equipment, thus ensuring the stability after height adjustment.

[0030] The support leg 52 has two secondary through slots 11. The secondary through slot 11 on the lower part of the support leg 52 corresponds to the secondary through slot 11 on the secondary support leg 53. Then, a fixing plate 54 is inserted to fix the secondary support leg 53. At this time, the bottom end of the secondary support leg 53 and the moving wheel are supported on the ground together. Therefore, the secondary support leg 53 has better stability in contact with the ground, which improves the overall support stability. When the secondary support leg 53 is no longer needed to support the equipment, and the secondary support leg 53 is raised to its highest height, the secondary through slot 11 on the upper part of the support leg 52 corresponds to the secondary through slot 11 on the secondary support leg 53. Then, a fixing plate 54 is inserted to fix the secondary support leg 53. This prevents the secondary support leg 53 from automatically descending during the overall movement, which would cause the secondary support leg 53 to contact the ground and affect the movement of the equipment.

[0031] See Figure 12The inner walls of the air source heat pump body 2 and the inner walls of the soundproof cover 3 are both equipped with sound-absorbing components. These components include a porous U-shaped sound-absorbing plate 41, with a V-shaped sound-absorbing sheet 42 fixed inside the plate 41. Sound-absorbing holes 43 are evenly distributed on the sheet 42. A secondary V-shaped sound-absorbing sheet 44 is fixed to the inner wall of the V-shaped sheet 42, with secondary sound-absorbing holes 45 evenly distributed on the sheet 44. A sealing cover 46 is fixed to the plate 41 with screws, and a second layer of sound-absorbing cotton 47 is provided on the inner side of the sealing cover 46. The appropriate number of sound-absorbing components is installed on the inner walls of the air source heat pump body 2 and the soundproof cover 3, depending on the actual situation. During operation, noise leaks through two paths: solid-borne sound generated by the vibration of the heat pump body shell, and airborne sound remaining after initial noise reduction by the soundproof cover 3 and the air inlet / outlet frame. The sound-absorbing components utilize a porous U-shaped sound-absorbing plate and V-shaped sound-absorbing sheets. The multi-layered nested structure of the sheet, V-shaped auxiliary sound-absorbing sheet, and sound-absorbing cotton layer extends the sound wave propagation path and divides the sound wave energy through physical structural design. Combined with the sound absorption characteristics of the material, it achieves multi-level noise attenuation. The U-shaped structure can wrap the sound transmission surface and expand the sound absorption contact area. The porous nature of the sheet can absorb some mid-to-high frequency noise and guide the sound waves to propagate inward, avoiding sound wave reflection and leakage. The double-layered V-shaped structure divides the sound-absorbing space into multiple small cavities. After the sound waves enter, they will be reflected and collided multiple times in the cavity, and the energy will be gradually consumed. Both have uniform sound-absorbing holes 43 and 45 to further refine the sound wave refraction path and enhance the filtering of noise of different frequencies. The sealing cover 46 seals the internal space of the sound-absorbing component to prevent noise from leaking from the gaps between the components. The porous structure of the second sound-absorbing cotton layer 47 can finally absorb the residual noise after multiple refractions. Both the first and second sound-absorbing cotton layers are conventional sound-absorbing cotton.

[0032] See Figure 13 The top of the mobile frame 1 is equipped with multiple vertically arranged shock absorbers 48 and multiple vertical plates 49. Each vertical plate 49 is fixed with a horizontally arranged auxiliary shock absorber 50. The top of the shock absorber 48 is fixed with a support platform 51. The air source heat pump body 2 is installed on the top of the support platform 51. The other end of the auxiliary shock absorber 50 is fixedly connected to the outer wall of the shell of the air source heat pump body 2. When the air source heat pump body is running, the compressor, fan and other components inside it will generate high-frequency vibration. The vertically arranged shock absorbers 48 are installed between the top of the mobile frame and the support platform 51, directly bearing the vertical weight of the air source heat pump body. They can absorb the vertical vibration energy generated when the heat pump is running, and prevent the vibration from being directly transmitted to the mobile frame. The horizontally arranged auxiliary shock absorbers 50 connect the frame and the heat pump body shell through the vertical plates 49, which can offset the horizontal vibration generated when the heat pump is running. They comprehensively suppress vibration transmission from both vertical and horizontal dimensions, reduce resonance noise caused by vibration, and further improve the overall noise reduction effect of the equipment.

[0033] In use, the air source heat pump body 2 is mounted on the mobile frame 1, making it easy to move to a suitable working location. The air intake frame 8 is installed on the outer side of the air source heat pump body 2, covering the air intake window 4 to silence the incoming air. The exhaust frame 9 is installed on the top surface of the air source heat pump body 2, covering the air outlet window 5 to silence the outgoing air. The semi-circular soundproof cover 12 is fixed to the sound inlet cylinder 14 as an integral part, and then the corresponding semi-circular soundproof cover 12 is welded into the air intake frame 8 and the exhaust frame 9. At this time, the semi-circular soundproof cover 12 and the air intake frame 8 are integrated with the semi-circular soundproof cover 12. A noise reduction space 39 is formed between the soundproof cover 12 and the exhaust frame 9. Therefore, the semi-circular soundproof cover 12 and the sound-absorbing cotton layer 40 are both arranged within the noise reduction space 39. The noise generated during the air intake and exhaust process will enter the noise reduction space 39 through the noise reduction hole 15 and be reduced by the sound-absorbing cotton layer 40. Specifically, most of the air source heat pump body 2 is set inside the soundproof cover 3. Therefore, the mobile frame 1, the air source heat pump body 2 and the soundproof cover 3 are integrated into one unit, which not only realizes the modular integration of the equipment, but also provides a basis for subsequent mobile functions, ensuring that the air source heat pump can be easily moved. Through the design of the soundproof cover 3 wrapping the air source heat pump body 2, the noise reduction inside the soundproof cover 3 is achieved. Noise reduction hole 6 and the internal sound insulation cotton form the first line of sound insulation. Some of the operating noise generated by the air source heat pump body 2 will enter the noise reduction hole 6. The sound insulation cotton in the sound insulation space 7 can absorb the solid-borne sound and air-borne sound radiated outward during the operation of the heat pump body. Noise reduction hole 6 can weaken the direct propagation of sound waves and initially reduce the overall noise leakage of the equipment. By setting a combination of semi-circular sound insulation cover 12, I-shaped sound inlet cylinder 14 and cross frame 16 in the air inlet and outlet frame, the sound waves are refracted and attenuated multiple times through multiple noise reduction holes, namely noise reduction hole 2 13, noise reduction hole 3 15 and noise reduction hole 4 17. The structure of the I-shaped sound inlet cylinder 14 can extend The long sound wave propagation path and the cross frame 16 further divide the sound wave energy. Combined with the sound insulation material, it achieves multi-stage filtration of airflow noise and equipment operation noise, greatly improving the noise reduction effect of the air inlet and outlet channels, and ultimately realizing the noise reduction function of the air source heat pump. Bearings are set at both ends of the rotating rod 28 to ensure the stability of the rotating rod rotation. The air inlet frame 8, air outlet frame 9, sound inlet cylinder 14, semi-circular sound insulation cover 12, sound insulation cover 3, sound absorption plate 41, secondary sound absorption plate 44, sound absorption plate 42 and sealing cover 46 are all elastic metal plates. The elastic metal plates can cause sound waves to be refracted or diffracted multiple times, further improving the noise reduction effect of the air source heat pump.

[0034] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A noise-reducing air source heat pump, characterized in that, The mobile frame (1) is provided with an air source heat pump body (2) and a sound insulation cover (3). The air source heat pump body (2) is located inside the sound insulation cover (3), and the top of the air source heat pump body (2) extends out of the sound insulation cover (3). Noise reduction holes (6) are evenly opened on the inner side of the sound insulation cover (3). The sound insulation cover (3) has a sound insulation space (7) inside, and the sound insulation space (7) is filled with sound insulation cotton. The air source heat pump body (2) is provided with an air inlet window (4) and an air outlet window (5). The air source heat pump body (2) is also equipped with an air inlet frame (8) and an air outlet frame (9). The air inlet frame (8) is located on the outer side of the air source heat pump body (2), the air inlet window (4) is located inside the air inlet frame (8), the air outlet frame (9) is located on the top surface of the air source heat pump body (2), and the air outlet window (5) is located inside the air outlet frame (9). Dustproof frame components are installed on the inner side of the outer opening of the air inlet frame (8) and the air outlet frame (9). Noise reduction components are also installed inside the air inlet frame (8) and the air outlet frame (9). The noise reduction components include a semi-circular soundproof cover (12) located inside the air inlet frame (8) and the air outlet frame (9). Noise reduction holes (2) are evenly arranged on the semi-circular soundproof cover (12). A sound inlet cylinder (14) is fixedly installed inside the air inlet frame (8) and the air outlet frame (9). The sound inlet cylinder (14) is I-shaped, and a noise reduction hole (3) is opened on the inner wall of the sound inlet cylinder (14). The semi-circular soundproof cover (12) is fixedly connected to the sound inlet cylinder (14). A cross frame (16) is fixedly installed on the semi-circular soundproof cover (12). Noise reduction holes (4) are evenly opened on the cross frame (16).

2. A noise-reducing air source heat pump according to claim 1, characterized in that, A semi-circular soundproof cover (12) is fixed on the sound inlet tube (14), and noise reduction spaces (39) are formed between the sound inlet tube (14) and the air inlet frame (8), and between the sound inlet tube (14) and the air outlet frame (9). A layer of sound-absorbing cotton (40) is pasted on the inner wall of the noise reduction space (39). A slot (18) is provided on the soundproof cover (3) for the air inlet frame (8) to pass through. A moving wheel (19) is provided at each of the four corners of the bottom of the mobile frame (1). A manual handle (20) is fixed on the outer wall of the soundproof cover (3).

3. A noise-reducing air source heat pump according to claim 2, characterized in that, The dustproof frame includes an upper frame (21) and a lower frame (22). Dustproof nets (23) are provided on the inner sides of both the upper frame (21) and the lower frame (22). A V-shaped frame (24) is fixed between the upper frame (21) and the lower frame (22). A secondary dustproof net (25) is provided on the inner side of the V-shaped frame (24).

4. A noise-reducing air source heat pump according to claim 3, characterized in that, The mobile frame (1) has a setting space (26) on its inner side. A flipping assembly is set in the setting space (26). The flipping assembly includes two rotating rods (28) that are rotatably connected to the setting space (26) via bearings (27). Mounting seats (29) are fixedly fitted on the outer surfaces of the rotating rods (28). The mobile wheels (19) are mounted on the mounting seats (29).

5. A noise-reducing air source heat pump according to claim 4, characterized in that, The bottom of the space (26) is provided with a flip-out groove (30) for the corresponding moving wheel (19). The rotating rod (28) is fixed with meshing gears (31). A middle gear (32) meshes between the meshing gears (31). A manual rotating rod (33) is fixed on one end face of the middle gear (32). A manual turntable (34) is fixed on the other end of the manual rotating rod (33).

6. A noise-reducing air source heat pump according to claim 5, characterized in that, A cylinder (10) is fixedly installed on the inner wall of the space (26). A secondary bearing is fixedly installed on the inner wall of the cylinder (10). A manual rotating rod (33) passes through the cylinder (10) and extends out of the mobile frame (1). The manual rotating rod (33) is connected to the secondary bearing. A manual turntable (34) is fitted to the outer side of the mobile frame (1). The manual turntable (34) is I-shaped. Two L-shaped positioning plates (35) are fixedly installed on the outer side of the mobile frame (1). The ends of the L-shaped positioning plates (35) are located inside the manual turntable (34). Matching locking threaded holes (36) are opened on the L-shaped positioning plates (35) and the manual turntable (34).

7. A noise-reducing air source heat pump according to claim 6, characterized in that, The bottom of the mobile frame (1) is fixed with multiple support legs (52), and a secondary support leg (53) is slidably sleeved on the support leg (52). Fixing components are provided on the secondary support leg (53) and the support leg (52).

8. A noise-reducing air source heat pump according to claim 7, characterized in that, The fasteners include a fixed horizontal plate (54), which has through slots at both ends and a limiting plate (37) passing through the slots. A threaded rod (38) is fixed at the bottom of the limiting plate (37), and a locking nut is fixed on the threaded rod (38). The supporting leg (52) and the secondary supporting leg (53) are both provided with secondary through slots (11) through which the fixed horizontal plate (54) passes.

9. A noise-reducing air source heat pump according to claim 8, characterized in that, The inner wall of the air source heat pump body (2) and the inner wall of the soundproof cover (3) are both equipped with a sound-absorbing component. The sound-absorbing component includes a porous U-shaped sound-absorbing plate (41). A V-shaped sound-absorbing plate (42) is fixedly installed inside the sound-absorbing plate (41). A sound-absorbing hole (43) is evenly distributed on the sound-absorbing plate (42). A V-shaped secondary sound-absorbing plate (44) is fixedly installed on the inner wall of the V-shaped sound-absorbing plate (42). A second sound-absorbing hole (45) is evenly distributed on the secondary sound-absorbing plate (44). A sealing cover plate (46) is fixedly installed on the sound-absorbing plate (41) with screws. A second layer of sound-absorbing cotton (47) is provided on the inner side of the sealing cover plate (46).

10. A noise-reducing air source heat pump according to claim 9, characterized in that, The top of the mobile frame (1) is provided with multiple vertically arranged shock absorbers (48) and multiple vertical plates (49). Each vertical plate (49) is fixed with a horizontally arranged secondary shock absorber (50). The top of the shock absorber (48) is fixed with a support platform (51). The air source heat pump body (2) is installed on the top of the support platform (51). The other end of the secondary shock absorber (50) is fixedly connected to the outer wall of the shell of the air source heat pump body (2).

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