Efficient noise reduction device for air source heat pump unit

Abstract

The utility model discloses an efficient noise reduction device for an air source heat pump unit, which comprises an air source heat pump main machine, an air outlet cover is assembled at the position of an air outlet on the outer side of the air source heat pump main machine, and an air inlet cover is assembled at the position of an air inlet on the outer side of the air source heat pump main machine. The resistance between air and the hood is reduced through the air inlet hood parallel to inlet air and the air outlet hood parallel to spiral airflow blown out through impeller driving, the main damping and noise reduction effect is provided, the outer layer is assisted with the fixing shell and the damping layer for fixing, mechanical vibration is counteracted and reduced, and the service life of the fan is prolonged. The noise reduction layer of which the internal aperture and the pore are gradually reduced from inside to outside is used for counteracting noise generated by movement vibration of internal equipment through air transmission, so that the maximum noise reduction effect is realized; the air source heat pump unit effectively solves the problems of vibration generated by airflow flowing and noise caused by vibration generated by equipment due to the fact that an outer cover of an existing air source heat pump unit generally adopts a metal shell or a metal net cover.

Description

Technical Field

[0001] The utility model relates to the technical field, in particular to a high-efficiency noise reduction device for an air source heat pump unit. Background Art

[0002] An air-source heat pump utilizes heat from the air to provide heating, cooling, and hot water for buildings. It achieves this by transferring heat from a low-temperature heat source (such as outdoor air) to a high-temperature heat source (such as the indoor environment or a water tank). This device is widely used in residential, commercial, and industrial settings due to its high efficiency, energy efficiency, and environmental friendliness. The core operating principle of an air-source heat pump is the reverse Carnot cycle. It consists of four main components: an evaporator, a compressor, a condenser, and an expansion valve.

[0003] The outer cover of the existing air source heat pump unit uses metal plates, metal mesh and other materials for stamping the air inlet as the shell. Since the main noise-generating equipment is located in the outdoor unit, the mechanical vibration of the equipment in the outdoor unit will vibrate the air to generate sound and noise. In addition, during heat exchange, the fan that assists the air flow drives the air flow between the heat exchanger fins and also generates turbulence and surge when it hits the shell, causing the shell to generate mechanical vibration and thus generate noise. The existing shell structure is not conducive to noise reduction and will increase the noise generated by the equipment, causing noise pollution. In view of the above problems, a high-efficiency noise reduction device for air source heat pump units is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency noise reduction device for an air source heat pump unit to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-efficiency noise reduction device for an air source heat pump unit, comprising an air source heat pump main unit, an air outlet cover is installed at the outer air outlet position of the air source heat pump main unit, and an air inlet cover is installed at the outer air inlet position of the air source heat pump main unit;

[0006] The air outlet cover includes a fixed shell 1, which is fixedly assembled with the air source heat pump host. A shock-absorbing layer 1 is fixed inside the fixed shell 1, and a noise reduction layer 1 is filled inside the shock-absorbing layer 1.

[0007] The air inlet cover includes a second fixed shell, which is fixedly assembled on the outside of the main beam of the air source heat pump host. A second shock-absorbing layer is fixed inside the second fixed shell, and a second noise reduction layer is filled inside the second shock-absorbing layer.

[0008] The outside of the air outlet cover is provided with spiral-shaped air outlets distributed in a circumferential array, and the internal air duct of a single air outlet is parallel to the air flow of the air source heat pump host;

[0009] The first fixed shell and the second fixed shell adopt a foam metal structure, the pore size of the foam holes is 1-5 mm, and the pore spacing of the foam holes is 1.2-5.5 mm.

[0010] Preferably, reinforcing ribs are welded inside the shock-absorbing layer 1.

[0011] Preferably, a guide port for forming an air duct outlet is welded inside the shock-absorbing layer 1.

[0012] Preferably, a mounting groove is provided on the inner side of the noise reduction layer 1, and the mounting groove is attached to the inner wall of the shock absorption layer 1.

[0013] Preferably, an air inlet pipe is welded inside the second shock-absorbing layer, and a fitting opening is opened on the outer wall of the second noise-reduction layer, and the fitting opening is tightly fitted on the outer wall of the air inlet pipe.

[0014] Preferably, the air inlet pipe is arranged vertically, and air induction chamfers are provided at the top and bottom ends of the air inlet pipe.

[0015] The exteriors of the first and second fixed shells are covered with metal fairings.

[0016] A fixing strip 1 and a fixing strip 2 are welded to both sides of the inner walls of the fixing shell 1 and the fixing shell 2 respectively.

[0017] The air inlet cover includes an auxiliary air inlet cover assembled on the air inlet of the main unit of the air source heat pump. The structure of the auxiliary air inlet cover is the same as that of the air inlet cover.

[0018] The interior of the noise reduction layer 1 and the noise reduction layer 2 contains holes of uniform size, and the inner pores and pore diameters of the noise reduction layer 1 and the noise reduction layer 2 are larger than the outer pores and pore diameters thereof, and the pores and pore diameters of the noise reduction layer 1 and the noise reduction layer 2 decrease uniformly from the inside to the outside.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention provides an efficient noise reduction device for an air source heat pump unit with an air inlet hood and an air outlet hood. When in use, the resistance between the air and the hood is reduced by the air inlet hood parallel to the air intake and the air outlet hood parallel to the spiral airflow driven by the impeller, providing the main shock-absorbing and noise-reducing effects, and the auxiliary outer layer is used for fixing the fixed shell and the shock-absorbing layer to offset and reduce mechanical vibrations, and the noise reduction layer with an internal aperture and pores gradually decreasing from the inside to the outside is used to offset the noise generated by the internal equipment movement vibration through the air transmission, thereby achieving the maximum noise reduction effect, and effectively solving the problem that the existing air source heat pump unit outer cover generally adopts a metal shell or a metal mesh cover, which is caused by the vibration of the air flow and the very loud noise caused by the vibration of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the utility model.

[0021] Figure 2 This is a schematic diagram of the assembly of the utility model.

[0022] Figure 3 This is a schematic diagram of the assembly of the air outlet cover of the utility model.

[0023] Figure 4 This is a reverse schematic diagram of the explosion perspective of the air outlet cover of the utility model.

[0024] Figure 5 This is the rear view of the air outlet cover of the present invention.

[0025] Figure 6 for Figure 5 Sectional view at AA in the middle.

[0026] Figure 7 This is a schematic diagram of the assembly of the air inlet cover of the utility model.

[0027] Figure 8 This is a reverse schematic diagram of the explosion perspective of the air inlet cover of the utility model.

[0028] Figure 9 This is the rear view of the air inlet cover of the utility model.

[0029] Figure 10 for Figure 9 Schematic diagram of the cross section at BB in the middle.

[0030] In the figure: 1. Air source heat pump main unit, 2. Air outlet cover, 21. Fixed shell 1, 22. Shock absorption layer 1, 23. Noise reduction layer 1, 24. Guide port, 25. Reinforcement rib, 26. Installation slot, 27. Fixed strip 1, 3. Air inlet cover, 31. Fixed shell 2, 32. Shock absorption layer 2, 33. Noise reduction layer 2, 34. Air inlet pipe, 35. Fitting port, 36. Fixed strip 2, 37. Auxiliary air inlet cover. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figure 1-4The utility model provides a technical solution: a high-efficiency noise reduction device for an air source heat pump unit, comprising an air source heat pump main unit 1, an air outlet cover 2 is installed at the outer air outlet position of the air source heat pump main unit 1, and an air inlet cover 3 is installed at the outer air inlet position of the air source heat pump main unit 1;

[0033] The air outlet cover 2 includes a fixed shell 21, which is fixedly assembled with the air source heat pump main unit 1. A shock-absorbing layer 22 is fixed inside the fixed shell 21, and a noise reduction layer 23 is filled inside the shock-absorbing layer 22.

[0034] The air inlet cover 3 includes a second fixed shell 31, which is fixedly assembled on the outside of the main beam of the air source heat pump host 1. A second shock-absorbing layer 32 is fixed inside the second fixed shell 31, and the interior of the second shock-absorbing layer 32 is filled with a second noise reduction layer 33;

[0035] The outside of the air outlet cover 2 is provided with spiral air outlets distributed in a circumferential array, and the internal air duct of a single air outlet is parallel to the air flow of the air source heat pump host;

[0036] The first fixed housing 21 and the second fixed housing 31 are made of a foam metal structure, the diameter of the foam holes is 1-5 mm, and the pore spacing of the foam holes is 1.2-5.5 mm.

[0037] The utility model provides an efficient noise reduction device for an air source heat pump unit with an air inlet hood 3 and an air outlet hood 2. When in use, the air inlet hood 3 parallel to the air intake and the air outlet hood parallel to the spiral airflow driven by the impeller reduce the resistance between the air and the hood, providing the main shock-absorbing and noise-reducing effects, and the auxiliary outer layer is used for fixing the fixed shell and the shock-absorbing layer to offset and reduce mechanical vibrations, and utilizes the noise reduction layer with an internal aperture and pores gradually decreasing from the inside to the outside to offset the noise generated by the movement vibration of the internal equipment through the air transmission, thereby achieving the maximum noise reduction effect, and effectively solving the problem that the existing air source heat pump unit outer cover generally adopts a metal shell or a metal mesh cover, which is caused by the vibration of the air flow and the very loud noise caused by the vibration of the equipment.

[0038] Specifically, reinforcing ribs 25 are welded inside the shock-absorbing layer 22. The purpose of adding reinforcing ribs 25 to the noise reduction layer 22 inside the air outlet is to improve the structural strength of the air outlet cover 2 installed at the air outlet end perpendicular to the air outlet direction, ensure that it can offset the impact force of the outward flow of air, improve the overall structural strength, and ensure the service life of the air outlet cover.

[0039] Specifically, a guide port 24 for forming an air duct outlet is welded inside the shock-absorbing layer 1 22. The guide port 24 is in the shape of a chrysanthemum petal, and the inner width of the vertical section is smaller than the outer width.

[0040] After the air flow is driven by the fan blades, the air flow will spiral forward in the direction of rotation of the impeller and be pushed by the lateral centrifugal force of the impeller. The air flow density at the center of the impeller is less than the air flow density outside the impeller. Therefore, the air flow at the center of the air outlet has a slower flow rate and lower pressure than the air flow outside. Therefore, the influence of the spiral air flow and the centrifugal force of the fan impeller on the air flow rate is combined to further improve the parallel effect of the guide port 24 and the outlet air flow, thereby achieving the effect of guiding the air flow in the forward direction and minimizing vibration.

[0041] Specifically, a mounting groove 26 is formed on the inner side of the noise reduction layer 1 23 , and the mounting groove 26 is attached to the inner wall of the shock absorption layer 1 22 .

[0042] Specifically, an air inlet pipe 34 is welded inside the second shock-absorbing layer 32 , and a fitting opening 35 is opened on the outer wall of the second noise reduction layer 33 . The fitting opening 35 is tightly fitted on the outer wall of the air inlet pipe 34 .

[0043] The first and second noise reduction layers 23 and 33 are preferably made of silicone foam, a material with excellent flexibility and aging resistance, capable of long-term stable operation in both high and low temperature environments. Its open or closed-cell structure effectively absorbs and isolates noise, while also offering excellent shock resistance, making it suitable for environments requiring high and low temperature resistance, UV resistance, and chemical corrosion resistance, such as vibration reduction and noise control for outdoor and industrial equipment. Compared to existing polyurethane foams commonly used for noise reduction, silicone foam offers superior aging resistance and vibration damping, further assisting in isolating noise caused by mechanical vibration, resulting in optimal noise reduction.

[0044] Specifically, the air inlet pipe 34 is arranged vertically, and air induction chamfers are provided at the top and bottom ends of the air inlet pipe 34. The chamfered shape of the air inlet pipe 34 and the way it is set parallel to the intake air flow have the same structural function as the air outlet cover 2, both of which are to reduce airflow disturbances, avoid mechanical vibration caused by airflow surge and eliminate noise, and have the effect of assisting in stabilizing the airflow.

[0045] Specifically, the outside of fixed shell 1 21 and fixed shell 2 31 is covered with a metal fairing, which is made of a smooth flat metal coating. Its main purpose is to prevent the foam metal holes from causing vortices and surges in the airflow in the direction of airflow, thereby helping to reduce noise.

[0046] It should be noted that the internal holes of the fixed shell 1 21 and the fixed shell 2 31 used in this application have a connected structure to avoid semi-enclosed bubbles, especially in the metal fairing coating position. It is necessary to ensure that the closed bubbles inside the coating position are connected with the holes of the foam metal to avoid deformation of the coating caused by air pressure.

[0047] Specifically, fixing strip 1 27 and fixing strip 2 36 are welded on both sides of the inner walls of fixing shell 1 21 and fixing shell 2 31 respectively, and mounting holes are provided on the outside of fixing strip 1 27 and fixing strip 2 36. The mounting holes can be set on the inside or on the outside of fixing shell 1 21 or fixing shell 2 31 for easy installation. Reinforced columns are provided at the four corners of the air source heat pump main unit 1 to ensure the stability of fixing strip 1 27 and fixing strip 2 36 after being fixed to the columns, and to ensure that the installation surface is fully fitted to avoid loosening.

[0048] Specifically, the air inlet hood includes an auxiliary air inlet hood 37 installed on the side air inlet of the air source heat pump main unit 1. The structure of the auxiliary air inlet hood 37 is the same as that of the air inlet hood 3. The auxiliary air inlet hood 37 is installed in other heat exchange directions of the heat exchanger as needed. When a single-sided heat exchanger or a V-shaped heat exchanger is used, it can be installed parallel to the heat exchange surface.

[0049] Specifically, the interior of the noise reduction layer 1 23 and the noise reduction layer 2 33 contains holes of uniform size, and the inner pores and apertures of the noise reduction layer 1 23 and the noise reduction layer 2 33 are larger than the outer pores and apertures. The pores and apertures of the noise reduction layer 1 23 and the noise reduction layer 2 33 decrease uniformly from the inside to the outside. Through the noise reduction holes evenly distributed from the inside to the outside, the air vibration can be filtered from strong to weak from the inside to the outside, thereby achieving a stable noise reduction effect on sound waves of different frequencies.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A high-efficiency noise reduction device for an air source heat pump unit, comprising an air source heat pump main unit (1), characterized in that: An air outlet cover (2) is installed at the outer air outlet position of the air source heat pump main unit (1), and an air inlet cover (3) is installed at the outer air inlet position of the air source heat pump main unit (1); The air outlet cover (2) includes a fixed shell (21), the fixed shell (21) is fixedly assembled with the air source heat pump host (1), a shock-absorbing layer (22) is fixed inside the fixed shell (21), and the interior of the shock-absorbing layer (22) is filled with a noise reduction layer (23); The air inlet cover (3) includes a second fixed shell (31), the second fixed shell (31) is fixedly assembled on the outside of the main beam of the air source heat pump main unit (1), a second shock-absorbing layer (32) is fixed inside the second fixed shell (31), and the interior of the second shock-absorbing layer (32) is filled with a second noise reduction layer (33); The outside of the air outlet cover (2) is provided with spiral-shaped air outlets distributed in a circumferential array, and the internal air duct of a single air outlet is parallel to the air flow of the air source heat pump main unit; The fixed shell 1 (21) and the fixed shell 2 (31) adopt a foam metal structure, the pore size of the foam holes is 1-5 mm, and the pore spacing of the foam holes is 1.2-5.5 mm.

2. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: A reinforcing rib (25) is welded inside the shock-absorbing layer 1 (22).

3. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: A guide opening (24) for forming an air duct outlet is welded inside the shock-absorbing layer 1 (22).

4. The high-efficiency noise reduction device for an air source heat pump unit according to claim 3, characterized in that: An installation groove (26) is provided on the inner side of the noise reduction layer 1 (23), and the installation groove (26) is attached to the inner wall of the shock absorption layer 1 (22).

5. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: An air inlet pipe (34) is welded inside the second shock-absorbing layer (32), and a fitting opening (35) is provided on the outer wall of the second noise-reducing layer (33), wherein the fitting opening (35) is tightly fitted on the outer wall of the air inlet pipe (34).

6. The high-efficiency noise reduction device for an air source heat pump unit according to claim 5, characterized in that: The air inlet pipe (34) is arranged vertically, and air induction chamfers are provided at the top and bottom ends of the air inlet pipe (34).

7. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: The exterior of the fixed shell 1 (21) and the fixed shell 2 (31) is covered with a metal fairing.

8. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: A fixing strip 1 (27) and a fixing strip 2 (36) are welded to both sides of the inner walls of the fixing shell 1 (21) and the fixing shell 2 (31), respectively.

9. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: The air inlet cover comprises an auxiliary air inlet cover (37) mounted on the side air inlet of the air source heat pump main unit (1); the structure of the auxiliary air inlet cover (37) is the same as that of the air inlet cover (3).

10. The high-efficiency noise reduction device for an air source heat pump unit according to claim 1, characterized in that: The interior of the noise reduction layer 1 (23) and the noise reduction layer 2 (33) contains holes of uniform size, and the inner pores and pore diameters of the noise reduction layer 1 (23) and the noise reduction layer 2 (33) are larger than the outer pores and pore diameters thereof, and the pores and pore diameters of the noise reduction layer 1 (23) and the noise reduction layer 2 (33) decrease uniformly from the inside to the outside.

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