A noise reduction type air source heat pump

Abstract

The utility model discloses a kind of noise reduction air source heat pumps, including air source heat pump main body, the top end output port of air source heat pump main body is equipped with sound reduction cover, the top end of sound reduction cover is equipped with dust frame;The top end of dust frame is embedded with dust screen, both sides outer wall of dust screen are equipped with embedded block;The inner wall of both sides of dust frame is equipped with embedded groove, embedded block is embedded in embedded groove;The bottom end of sound reduction cover is equipped with limit ring plate, the top end of limit ring plate is equipped with locating screw hole in four corners, the top end of air source heat pump main body is equipped with locating screw groove in four corners of its output port;The setting of this noise reduction air source heat pump, the utility model is equipped with sound reduction cover in the top end output port of air source heat pump main body, can effectively absorb and block the noise generated when heat pump operates, significantly reduce noise pollution, create quiet atmosphere for surrounding environment, expand the application scene of air source heat pump in residential area, school, hospital and other noise sensitive areas.

Description

Technical Field

[0001] This utility model relates to the field of air source heat pump technology, specifically a noise-reducing air source heat pump. Background Technology

[0002] With increasing energy demand and growing environmental awareness, air source heat pumps have gained widespread application in heating and cooling due to their high efficiency, energy saving, and environmental friendliness. However, existing air source heat pumps still face several challenges in actual operation. Firstly, they generate significant noise, disturbing the living environment of nearby residents and limiting their application in noise-sensitive areas. Secondly, the output port of the air source heat pump is directly exposed to the external environment, lacking effective dust prevention measures. Dust and debris from the air easily enter the heat pump, affecting its normal operation and lifespan, and frequent cleaning and maintenance increase operating costs and manpower burden. Furthermore, the existing air source heat pump structure is cumbersome to install and disassemble, with poor component connection stability and sealing, further impacting user experience and performance. Therefore, improvements to the existing technology are necessary. Utility Model Content

[0003] The purpose of this invention is to provide a noise-reducing air source heat pump to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a noise-reducing air source heat pump, comprising an air source heat pump body, a noise-reducing cover fitted at the top outlet of the air source heat pump body, and a dustproof frame fitted at the top of the noise-reducing cover; a dustproof mesh plate embedded at the top of the dustproof frame, and mounting blocks installed on both outer walls of the dustproof mesh plate; mounting grooves opened on both inner walls of the dustproof frame, and the mounting blocks embedded in the mounting grooves; a limiting ring plate fitted at the bottom of the noise-reducing cover, and positioning screw holes opened at the four corners of the top of the limiting ring plate; positioning screw grooves opened at the four corners of the top of the air source heat pump body at its outlet, and the positions of the positioning screw grooves and positioning screw holes correspond one-to-one; bolt bodies are screwed into the positioning screw holes and positioning screw grooves.

[0005] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, the side wall of the mounting block is provided with a storage cavity, and a positioning rod is installed inside the storage cavity. The side wall of the mounting groove is provided with a positioning hole, and the positioning rod is inserted into the positioning hole.

[0006] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, a spring is fitted around the outside of the positioning rod between the mounting block and the mounting groove, and the end of the positioning rod is provided with a rounded corner.

[0007] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, a circular groove is provided at the bottom end of the bolt body, and a bolt rod is installed at the bottom end of the circular groove. The bolt rod is screwed into the positioning screw hole and the positioning screw groove.

[0008] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, a fixing ring is installed on the upper outer end of the bolt rod, and an annular pressure plate, a spring and an annular rubber sheet are fitted on the circumferential surface of the bolt rod.

[0009] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, an extrusion block is installed at the upper edge of the annular rubber sheet, and the outer wall of the prestressed bolt body is provided with an arc surface, and the surface of the arc surface is provided with anti-slip texture.

[0010] As a preferred embodiment of the noise-reducing air source heat pump of this utility model, the bottom of the air source heat pump body is equipped with a support base, and the four corners of the bottom of the support base are equipped with casters, and the casters are equipped with brakes.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the design of this noise-reducing air source heat pump is reasonable.

[0012] High-efficiency noise reduction: This patent effectively absorbs and blocks the noise generated during the operation of the heat pump by installing a sound-reducing cover at the top output port of the air source heat pump body, significantly reducing noise pollution, creating a quiet atmosphere for the surrounding environment, and expanding the application scenarios of air source heat pumps in noise-sensitive areas such as residential areas, schools, and hospitals.

[0013] Dust Protection: The dustproof frame and embedded dustproof mesh plate at the top of the soundproof enclosure filter the air entering the heat pump, preventing dust and debris from entering the equipment. This reduces wear and tear on internal components, lowers the probability of malfunctions, extends the service life of the air source heat pump, and reduces maintenance frequency and costs. Convenient Installation and Maintenance: The dustproof mesh plate, through the cooperation of the mounting block and mounting slot, utilizes positioning rods and springs for quick installation and removal, facilitating cleaning and replacement. The limiting ring plate is connected to the air source heat pump body via bolts. The design of the positioning screw holes and grooves ensures installation accuracy and stability. The unique bolt structure, with its annular rubber sheet, annular pressure plate, and spring working together, enhances the sealing of the connection and facilitates disassembly and maintenance.

[0014] Flexible mobility: The support base and casters with brakes installed at the bottom of the air source heat pump make it easier to install, debug or adjust the position of the equipment, improving the flexibility of the equipment and meeting the installation needs of different scenarios. Attached Figure Description

[0015] Figure 1This is a front-view three-dimensional structural schematic diagram of the present invention;

[0016] Figure 2 This is a top view of the dustproof frame of this utility model;

[0017] Figure 3 This is a schematic diagram of part A of the present utility model;

[0018] Figure 4 This is a schematic diagram of the bolt body of this utility model.

[0019] In the diagram: 1. Support base; 2. Air source heat pump body; 3. Casters; 4. Limiting ring plate; 5. Positioning screw hole; 6. Bolt body; 61. Circular groove; 62. Annular rubber sheet; 63. Bolt rod; 64. Extrusion block; 65. Annular pressure plate; 66. Annular pressure plate; 67. Spring; 68. Arc surface; 7. Noise reduction cover; 8. Dustproof frame; 9. Dustproof mesh plate; 10. Embedding block; 11. Embedding groove; 12. Spring; 13. Positioning rod; 14. Positioning hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model provides a technical solution:

[0022] In this technical solution, a noise-reducing air source heat pump includes an air source heat pump body 2. A noise-reducing cover 7 is installed at the top output port of the air source heat pump body 2, and a dustproof frame 8 is installed at the top of the noise-reducing cover 7. A dustproof mesh plate 9 is embedded at the top of the dustproof mesh plate 8, and an insert block 10 is installed on both outer walls of the dustproof mesh plate 9. An insert groove 11 is opened on both inner walls of the dustproof frame 8, and the insert block 10 is embedded in the insert groove 11. A limiting ring plate 4 is installed at the bottom of the noise-reducing cover 7, and a positioning screw hole 5 is opened at each of the four corners of the top of the limiting ring plate 4. A positioning screw groove is opened at each of the four corners of the top of the air source heat pump body 2 at its output port, and the positions of the positioning screw groove and the positioning screw hole 5 correspond one-to-one. A bolt body 6 is screwed into the positioning screw hole 5 and the positioning screw groove.

[0023] The air source heat pump body 2, as the core component, includes components such as a compressor, heat exchanger, and fan. The soundproof enclosure 7 is made of composite sound insulation material, with an inner layer of sound-absorbing cotton (e.g., density 32kg / m³). 3The heat pump body is constructed with polyester fiber sound-absorbing cotton and an outer layer of sound insulation board (such as a 5mm thick damping sound insulation board). This multi-layer structure effectively absorbs and blocks the mid-to-high frequency noise generated during heat pump operation. The dustproof frame 8 is made of aluminum alloy, which is lightweight and corrosion-resistant. Its size is customized according to the size of the air source heat pump body 2 output port, and is usually 5-10cm larger than the outer edge of the output port to ensure complete coverage.

[0024] Specific data: Assuming the output port size of the air source heat pump body 2 is 50cm×50cm, the dustproof frame 8 is designed to be 60cm×60cm, and the height of the soundproof cover 7 is set to 30-50cm according to the noise reduction requirements;

[0025] The dustproof mesh 9 is made of stainless steel with a mesh size of 80-120, effectively filtering dust particles larger than 0.1-0.2mm in diameter while ensuring smooth airflow. The mounting block 10 and mounting groove 11 are fitted with a clearance fit; the width of the mounting block 10 is 0.5-1mm smaller than the width of the mounting groove 11 for easy installation and removal. The lengths of the mounting block 10 and mounting groove 11 are determined based on the width of the dustproof mesh 9, and are generally 2-3cm shorter than the width of the dustproof mesh 9.

[0026] Specific data: If the width of the dustproof mesh 9 is 50cm, then the length of the insert block 10 and the insert groove 11 is designed to be 47-48cm, the width of the insert block 10 is 1.5cm, and the width of the insert groove 11 is 2cm.

[0027] In some technical solutions, the side wall of the mounting block 10 is provided with a storage cavity, and a positioning rod 13 is installed inside the storage cavity. The side wall of the mounting groove 11 is provided with a positioning hole 14, and the positioning rod 13 is inserted into the positioning hole 14.

[0028] The storage cavity accommodates the positioning rod 13, allowing it to retract into the insert block 10 when not in use. The positioning rod 13 is made of stainless steel, with a diameter of 5-8 mm. Its length is determined by the thickness of the insert block 10 and the insert groove 11, generally being 5-10 mm longer than the sum of their thicknesses to ensure sufficient fixing strength after insertion into the positioning hole 14. The diameter of the positioning hole 14 is the same as that of the positioning rod 13, and its depth is 2-3 mm deeper than the insertion length of the positioning rod 13.

[0029] Specific data: If the total thickness of the insert block 10 and the insert groove 11 is 2cm, then the length of the positioning rod 13 is designed to be 3-3.5cm, and the depth of the positioning hole 14 is 2.2-2.3cm.

[0030] In some technical solutions, a spring 12 is fitted on the outside of the positioning rod 13 between the insert block 10 and the insert groove 11, and the end of the positioning rod 13 is rounded.

[0031] Spring 12 is a compression spring made of stainless steel wire with a wire diameter of 1-1.5mm and an outer diameter of 8-10mm. Its free length is determined based on the installation space, typically 2-3cm. The elastic coefficient of spring 12 is determined through calculation and testing to ensure that the positioning rod 13 can be stably inserted into the positioning hole 14 under the action of the spring, and can easily retract during disassembly. The fillet radius at the end of the positioning rod 13 is 1-2mm to facilitate insertion into the positioning hole 14 and reduce friction and wear.

[0032] Specific data: Spring 12 has a wire diameter of 1.2mm, an outer diameter of 9mm, and a free length of 2.5cm; the end radius of the positioning rod 13 is 1.5mm.

[0033] In some technical solutions, a circular groove 61 is provided at the bottom end of the bolt body 6, and a bolt rod 63 is installed at the bottom end of the circular groove 61. The bolt rod 63 is screwed into the positioning screw hole and the positioning screw groove.

[0034] The bolt body 6 is made of high-strength alloy steel with a tensile strength of not less than 800MPa. The diameter of the circular groove 61 is 2-3mm larger than the diameter of the bolt shank 63, and the depth is determined according to the installation requirements of the bolt shank 63, generally 5-8mm, to accommodate the bolt shank 63 and related sealing and fixing components. The thread specification of the bolt shank 63 is determined according to the size of the positioning screw hole and the positioning screw groove, commonly M8-M12 specifications, with a pitch of 1.25-1.5mm to ensure connection strength and stability.

[0035] Specific data: If the dimensions of the positioning screw hole and positioning screw groove are compatible with M10 bolts, then the thread specification of bolt shank 63 is M10 with a pitch of 1.5mm, and the diameter of the round groove 61 is 12-13mm with a depth of 6-7mm.

[0036] In some technical solutions, a retaining ring 66 is installed on the upper outer end of the bolt rod 63, and an annular pressure plate 65, a spring 67 and an annular rubber sheet 62 are fitted on the circumferential surface of the bolt rod 63.

[0037] A retaining ring 66 is welded to the bolt rod 63 to limit the positions of the annular pressure plate 65, spring 67, and annular rubber sheet 62. The annular pressure plate 65 is made of stainless steel with a thickness of 1-1.5mm. Its inner diameter is the same as the bolt rod 63, while its outer diameter is determined based on the installation space and sealing requirements, generally 5-8mm larger than the diameter of the positioning bolt hole. The spring 67 is a compression spring with a wire diameter of 0.8-1.2mm, an outer diameter of 6-8mm, and a free length of 3-4cm. Its function is to provide elastic pressure, ensuring that the annular rubber sheet 62 fits tightly against the connection point, enhancing the seal. The annular rubber sheet 62 is made of nitrile rubber with a thickness of 2-3mm, exhibiting good oil resistance and sealing properties.

[0038] Specific data: Annular pressure plate 65 has a thickness of 1.2mm, an inner diameter of 10mm, and an outer diameter of 18mm; Spring 67 has a wire diameter of 1mm, an outer diameter of 7mm, and a free length of 3.5cm; Annular rubber sheet 62 has a thickness of 2.5mm.

[0039] In some technical solutions, an extrusion block 64 is installed at the upper edge of the annular rubber sheet 62, and an arc surface 68 is provided on the outer wall of the prestressed bolt body 6, and the surface of the arc surface 68 is provided with anti-slip texture.

[0040] The compression block 64 is made of the same nitrile rubber material as the annular rubber sheet 62, with a height of 3-5mm and a width of 5-8mm. Its function is to further compress the annular rubber sheet 62 during bolt tightening, enhancing the sealing effect. The arc surface 68 on the outer wall of the bolt body 6 reduces stress concentration and improves the bolt's fatigue resistance. The radius of curvature of the arc surface 68 is determined according to the bolt size, generally 3-5mm. The anti-slip texture is processed using a straight-knurling process, with a knurling depth of 0.2-0.3mm and a spacing of 1-1.5mm, facilitating bolt tightening and loosening by operators.

[0041] Specific data: Extrusion block 64 height 4mm, width 6mm; outer wall arc surface 68 of bolt body 6 with radius of curvature 4mm; anti-slip texture depth 0.25mm, spacing 1.2mm.

[0042] In some technical solutions, the bottom of the air source heat pump body 2 is equipped with a support base 1, and the four corners of the bottom of the support base 1 are equipped with casters 3, and the casters 3 are equipped with brakes.

[0043] The support base 1 is welded from Q235B steel with a thickness of 8-10mm. Its dimensions are determined based on the size of the air source heat pump body 2, and it is usually 10-15cm larger than the outer edge of the bottom of the body to provide stable support. The casters 3 are heavy-duty polyurethane casters with a single load-bearing capacity of no less than 200kg and a diameter of 100-125mm. They are equipped with a double-brake system to ensure the safety of the equipment during movement and fixing.

[0044] Specific data: The thickness of the support base 1 is 9mm. If the bottom size of the air source heat pump body 2 is 80cm×80cm, then the size of the support base 1 is designed to be 95cm×95cm; the diameter of the caster wheel 3 is 100mm, and the single load-bearing capacity is 250kg.

[0045] Working process and principle:

[0046] The core operation of an air source heat pump: Inside the main body 2, the compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant. This high-temperature, high-pressure gaseous refrigerant then enters the heat exchanger, where it exchanges heat with the outside air, releasing heat and condensing into a liquid state. The liquid refrigerant, after being depressurized by a throttling device, enters the evaporator to absorb heat from the air, re-vaporizing into a gaseous refrigerant. This cycle repeats continuously, transferring heat from a low-temperature environment to a high-temperature environment, achieving the purpose of heating or cooling. During this process, a fan propels air through the heat pump, ensuring efficient heat exchange.

[0047] Noise Reduction Process: The soundproof enclosure plays a crucial role in noise reduction. Its inner layer of polyester fiber sound-absorbing cotton utilizes a porous structure. When sound waves generated by the heat pump are introduced, the sound waves are continuously reflected and refracted in the pores, rubbing against the sound-absorbing cotton material and converting sound energy into heat energy, thereby absorbing mid-to-high frequency noise. The outer layer of damping sound insulation board, through its own damping characteristics, hinders the propagation of sound waves, attenuates noise energy, reduces the intensity of noise diffusion outward, and creates a quiet atmosphere for the surrounding environment.

[0048] Dust prevention process: When outside air enters the air source heat pump body 2, it first passes through the dustproof mesh plate 9 at the top of the dustproof frame 8. The stainless steel mesh plate 9, with its fine 80-120 mesh openings, can effectively intercept dust particles and debris with a diameter greater than 0.1-0.2mm in the air, preventing them from entering the heat pump and avoiding wear on core components such as the compressor and heat exchanger caused by dust, thus ensuring the normal operation and service life of the heat pump.

[0049] Dustproof mesh panel installation and disassembly principle: When installing the dustproof mesh panel 9, align the insert block 10 with the insert groove 11 and insert it. During insertion, the rounded corners at the end of the positioning rod 13 make it easier for the insert block 10 to enter the insert groove 11. After the insert block 10 is fully embedded in the insert groove 11, the positioning rod 13 pops out under the elastic force of the spring 12 and inserts into the positioning hole 14, realizing the quick positioning and fixing of the dustproof mesh panel 9. When disassembling, simply press the positioning rod 13 to make it retract into the storage cavity against the elastic force of the spring 12, and the dustproof mesh panel 9 can be pulled out from the dustproof frame 8 for easy cleaning and replacement.

[0050] The connection principle between the noise reduction cover and the heat pump body: The limiting ring plate 4 of the noise reduction cover 7 is connected to the air source heat pump body 2 via the bolt body 6. Align the bolt rod 63 with the positioning screw hole 5 and the positioning screw groove, and rotate the bolt body 6; the bolt rod 63 gradually screws in. During tightening, the annular rubber sheet 62 first contacts the connection part. As the bolt is further tightened, the annular pressure plate 65, under the action of the spring 67, applies pressure to the annular rubber sheet 62, making it tightly fit against the connection part, thus sealing it and preventing noise leakage from the connection gap. Simultaneously, the extrusion block 64 further compresses the annular rubber sheet 62 under the bolt tightening force, enhancing the sealing effect. The arc surface 68 and anti-slip texture design on the outer wall of the bolt body 6 not only reduce stress concentration and improve the bolt's fatigue resistance but also facilitates tightening and disassembling of the bolt by operators, ensuring the stability and convenience of the connection.

[0051] Equipment movement and fixing principle: When it is necessary to move the air source heat pump, release the brake on the caster 3. Since the caster 3 can rotate freely 360°, the operator can easily push the equipment to change its position. After the equipment is moved to the designated position, step on the brake on the caster 3. The double brake system is activated to fix the caster 3. The bearing base 1 provides stable support for the air source heat pump body 2, ensuring that the equipment will not be displaced during operation.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A noise-reduced air source heat pump comprising an air source heat pump body (2), characterized in that, The air source heat pump body (2) is equipped with a sound-reducing cover (7) at the top output port, and the top of the sound-reducing cover (7) is equipped with a dustproof frame (8). The top of the dustproof frame (8) is fitted with a dustproof mesh plate (9), and the outer walls on both sides of the dustproof mesh plate (9) are fitted with mounting blocks (10); The dustproof frame (8) has mounting grooves (11) on both sides of its inner wall, and the mounting block (10) is mounted in the mounting groove (11). The bottom end of the noise reduction cover (7) is equipped with a limiting ring plate (4). The four corners of the top of the limiting ring plate (4) are provided with positioning screw holes (5). The top of the air source heat pump body (2) is provided with positioning screw grooves at the four corners of its output port. The positions of the positioning screw grooves and the positioning screw holes (5) correspond one-to-one. The positioning screw hole (5) and positioning screw groove are screwed with bolt bodies (6).

2. The noise reducing air source heat pump of claim 1, wherein, The side wall of the mounting block (10) is provided with a storage cavity, and a positioning rod (13) is installed inside the storage cavity. The side wall of the mounting groove (11) is provided with a positioning hole (14), and the positioning rod (13) is inserted into the positioning hole (14).

3. A noise reducing air source heat pump as set forth in claim 2 wherein, A spring (12) is fitted on the outside of the positioning rod (13) between the insert block (10) and the insert groove (11), and the end of the positioning rod (13) is rounded.

4. The noise reducing air source heat pump of claim 1, wherein, The bottom end of the bolt body (6) is provided with a circular groove (61), and a bolt rod (63) is installed at the bottom end of the circular groove (61). The bolt rod (63) is screwed into the positioning screw hole (5) and the positioning screw groove.

5. A noise reducing air source heat pump as set forth in claim 4 wherein, A retaining ring (66) is installed on the upper outer end of the bolt rod (63), and an annular pressure plate (65), a spring (67) and an annular rubber sheet (62) are fitted on the circumferential surface of the bolt rod (63).

6. A noise reducing air source heat pump as set forth in claim 5 wherein, An extrusion block (64) is installed at the upper edge of the annular rubber sheet (62), and the outer wall of the prestressed bolt body (6) is provided with an arc surface (68), and the surface of the arc surface (68) is provided with anti-slip texture.

7. The noise reducing air source heat pump of claim 1, wherein, The bottom of the air source heat pump body (2) is equipped with a support base (1), and the four corners of the bottom of the support base (1) are equipped with casters (3), and the casters (3) are equipped with brakes.

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