Noise reduction device for air source heat pump unit

Abstract

The utility model discloses a noise reduction device for an air source heat pump unit, which belongs to the technical field of air source heat pump units and is characterized in that effective dispersion is carried out through a breathable mesh plate, primary noise reduction treatment is carried out on airflow through a noise reduction plate, and low-frequency noise reduction treatment is carried out on noise in the airflow again through low-frequency sound-absorbing cotton. The noise reduction device for the air source heat pump unit comprises a unit body, a condenser is arranged on the unit body, air guide barrels with cooling fans are symmetrically arranged at the top of the unit body, a cooling air barrel is installed at the top of the unit body, an air guide cavity is formed in the cooling air barrel, and a ventilation mesh plate is installed at the middle section of the air guide cavity. A noise reduction plate is installed on the inner side edge of the heat dissipation air cylinder and corresponds to the position between the two breathable mesh plates, an air outlet is formed in one end of the air guide cavity, and a plurality of pieces of low-frequency sound absorption cotton are installed at the position, corresponding to the air outlet, of the heat dissipation air cylinder.

Description

Technical Field

[0001] The utility model belongs to the technical field of air source heat pump units, and in particular relates to a noise reduction device for air source heat pump units. Background Art

[0002] An air source heat pump unit is a device that utilizes the reverse Carnot cycle principle, uses outdoor air as a heat source, and absorbs heat from the air through an evaporator to generate heat or cool. This unit is usually composed of a compressor, evaporator, condenser, expansion valve and other main components, and is filled with an appropriate amount of working fluid. During the operation of the unit, the liquid working fluid absorbs heat from the air in the evaporator and evaporates to form steam, which is then compressed into a high-temperature and high-pressure gas by the compressor and condensed into a liquid in the condenser, releasing heat for heating or cooling. The expansion valve controls the flow and pressure of the refrigerant to ensure the normal circulation of the refrigerant between the evaporator and the condenser. The heat pump unit will generate certain noise when the fan dissipates heat during operation.

[0003] The existing air source heat pump units need to be subjected to auxiliary noise reduction treatment due to the existence of noise. The existing noise reduction methods mostly install a single air guide tube and a noise reduction baffle at the air outlet to achieve the overall noise reduction treatment of the air. The overall noise reduction effect is poor. Therefore, a noise reduction device for air source heat pump units is needed to assist in solving this problem. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a noise reduction device for an air source heat pump unit. The noise reduction device for an air source heat pump unit can effectively disperse the airflow generated in the wind guide process through the breathable mesh plate during operation, and perform preliminary noise reduction treatment on the noise generated by the airflow through the noise reduction plate arranged therein. When the airflow passes through the staggered low-frequency sound-absorbing cotton, the low-frequency sound-absorbing cotton is used to perform a further low-frequency noise reduction treatment on the noise in the airflow, thereby ensuring that the air source heat pump unit has a better noise reduction effect during operation.

[0006] (2) Technical solution

[0007] In order to solve the above technical problems, the utility model provides a noise reduction device for an air source heat pump unit, the noise reduction device for an air source heat pump unit comprises a unit body, a condenser is arranged on the unit body, an air guide tube is symmetrically arranged at the top of the unit body, a cross-shaped fixing frame is fixed in the air guide tube, and a heat dissipation fan is rotatably arranged on the fixing frame;

[0008] A heat dissipation duct is installed at the top of the unit body, an air guide cavity is opened inside the heat dissipation duct, a breathable mesh plate is installed at the middle section of the air guide cavity, a plurality of the breathable mesh plates are fan-shaped and arranged in the air guide cavity, a noise reduction plate is installed between two corresponding breathable mesh plates on the inner side of the heat dissipation duct, an air outlet is arranged at one end of the air guide cavity, low-frequency sound-absorbing cotton is installed at the heat dissipation duct corresponding to the air outlet, a plurality of the low-frequency sound-absorbing cottons are arranged, and a plurality of the low-frequency sound-absorbing cottons are S-shaped with air guide channels at the air outlet.

[0009] Furthermore, mounting holes are symmetrically drilled on the top of the unit body, an annular groove is opened at the inner edge of the mounting hole, a fixing cavity is symmetrically opened on the outer side of the heat dissipation air duct, a through hole is opened in the fixing cavity, and the mounting hole and the through hole are positioned by a positioning assembly.

[0010] Furthermore, the positioning assembly includes a positioning cylinder, a threaded groove is vertically opened inside the positioning cylinder, a screw rod is threadedly installed in the threaded groove, a sliding cavity is symmetrically opened at the bottom of the positioning cylinder corresponding to the threaded groove, a push plate is slidably arranged in the sliding cavity, a plug-in column is installed on the push plate, a reset spring for assisting the push plate in pushing the reset is installed in the sliding cavity, and a protruding block is fixed at the top of the screw rod.

[0011] Furthermore, the bottom of the screw rod is conical, the plug-in column is oblong, and the screw rod and the plug-in column are extruded in cooperation.

[0012] Furthermore, a covering plate is fixed near the top of the positioning tube, the covering plate is located above the penetration hole, and the covering plate covers the top of the penetration hole.

[0013] Furthermore, the bottom of the cover plate is symmetrically fixed with a limiting block, and the outer edge of the through hole is symmetrically provided with a limiting groove, and the limiting groove is plugged in with the limiting block.

[0014] Furthermore, two condensers are provided, and the two condensers are arranged in a V shape, and a sound insulation blocking frame is fixed on the outer side of the condenser.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can effectively disperse the airflow generated in the air guiding process through the air permeable mesh plate during operation by means of the cooperation between the heat dissipation duct arranged at the top of the unit body and the low-frequency sound-absorbing cotton, the breathable mesh plate and the noise reduction plate arranged therein, and perform preliminary noise reduction treatment on the noise generated by the airflow through the noise reduction plate arranged therein. When the airflow passes through the staggered low-frequency sound-absorbing cotton, the low-frequency sound-absorbing cotton performs a second low-frequency noise reduction treatment on the noise in the airflow, thereby ensuring that the air source heat pump unit has a good noise reduction effect during operation.

[0018] The utility model cooperates with the through holes arranged on the heat dissipation duct and the installation holes at the top of the unit body and the positioning components, etc., so that during operation, the positioning components can be plugged and installed in the through holes, and the limit blocks can be plugged into the corresponding limit grooves, and the protruding blocks can be rotated, so that the protruding blocks drive the screw rod to rotate as a whole, and the threads between the positioning cylinder and the screw rod can cooperate, so that the screw rod can be lowered as a whole, and the plug-in column can be squeezed as a whole during the process of the screw rod being lowered, so that the push plate can be moved during the process of the plug-in column moving, and the push plate drives the reset spring to be compressed as a whole, and enters the annular groove during the process of the plug-in column extending, thereby completing the overall installation of the heat dissipation duct. When the heat dissipation duct needs to be disassembled and maintained later, the overall disassembly and replacement of the heat dissipation duct can be quickly realized, thereby ensuring the smooth progress of subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a longitudinal cross-sectional view of the heat dissipation duct of the utility model;

[0022] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 It is a longitudinal cross-sectional view of the positioning assembly of the utility model.

[0024] The markings in the attached drawings are: 1. Unit body; 2. Sound insulation blocking frame; 3. Protruding frame; 4. Cooling fan; 5. Cooling duct; 6. Low-frequency sound-absorbing cotton; 7. Noise reduction board; 8. Breathable mesh board; 9. Mounting hole; 10. Through hole; 101. Limiting groove; 11. Positioning assembly; 12. Positioning cylinder; 13. Screw rod; 131. Protruding block; 14. Cover plate; 141. Limiting block; 15. Plug column; 16. Push plate; 17. Reset spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This specific embodiment is a noise reduction device for an air source heat pump unit, such as Figure 1 and Figure 2 As shown, the noise reduction device for an air source heat pump unit comprises a unit body 1, on which a condenser is arranged, two condensers are provided, and the two condensers are arranged in a V shape, a sound insulation blocking frame 2 is fixed on the outer side of the condenser, an air guide tube is symmetrically arranged at the top of the unit body 1, a cross-shaped fixing frame is fixed in the air guide tube, a cooling fan 4 is rotatably arranged on the fixing frame, a cooling fan for driving the cooling fan 4 to rotate is installed at the bottom of the fixing frame, and a A heat dissipation duct 5 is provided with an air guide cavity inside the heat dissipation duct 5, a breathable mesh plate 8 is installed at the middle section of the air guide cavity, and a plurality of breathable mesh plates 8 are fan-shaped and arranged in the air guide cavity, a noise reduction plate 7 is installed between two breathable mesh plates 8 corresponding to the inner side of the heat dissipation duct 5, an air outlet is provided at one end of the air guide cavity, and a low-frequency sound-absorbing cotton 6 is installed at the heat dissipation duct 5 corresponding to the air outlet, and a plurality of low-frequency sound-absorbing cottons 6 are arranged, and a plurality of low-frequency sound-absorbing cottons 6 are provided with an S-shaped air guide channel at the air outlet.

[0027] Through the cooperation between the heat dissipation duct 5 arranged at the top of the unit body 1 and the low-frequency sound-absorbing cotton 6, breathable mesh plate 8 and noise reduction plate 7 staggered therein, during the operation, the airflow generated in the wind guiding process can be effectively dispersed by the breathable mesh plate 8, and the noise generated by the airflow can be preliminarily reduced by the noise reduction plate 7 arranged therein. When the airflow passes through the staggered low-frequency sound-absorbing cotton 6, the low-frequency sound-absorbing cotton 6 can perform low-frequency noise reduction treatment on the noise in the airflow again, thereby ensuring that the air source heat pump unit has a good noise reduction effect during the operation.

[0028] Reference Figure 1 , Figure 3 and Figure 4 As shown, mounting holes 9 are symmetrically drilled on the top of the unit body 1, and an annular groove is provided at the inner edge of the mounting hole 9. A fixing cavity is symmetrically provided on the outer side of the heat dissipation duct 5, and a through hole 10 is provided in the fixing cavity. The mounting hole 9 and the through hole 10 are positioned together by a positioning component 11. The positioning component 11 includes a positioning cylinder 12, and a threaded groove is vertically provided inside the positioning cylinder 12. A screw rod 13 is threadedly installed in the threaded groove. A sliding cavity is symmetrically provided at the bottom of the positioning cylinder 12 corresponding to the threaded groove, and a push plate 16 is slidably provided in the sliding cavity. A plug-in column 15 is installed on the push plate 16. The bottom of the screw rod 13 is conical, and the plug-in column 15 is oblong. The screw rod 13 and the plug-in column 15 are squeezed together, and a reset spring 17 for assisting the push plate 16 to push the reset is installed in the sliding cavity, and a protruding block 131 is fixed at the top of the screw rod 13.

[0029] By cooperating between the through hole 10 provided on the heat dissipation duct 5 and the mounting hole 9 at the top of the unit body 1 and the positioning component 11, etc., during operation, the positioning component 11 can be plugged and installed in the through hole 10, and the limiting block 141 can be plugged into the limiting groove 101, and the protruding block 131 can be rotated, and the protruding block 131 can drive the screw rod 13 to rotate as a whole, and the threaded cooperation between the positioning cylinder 12 and the screw rod 13 can make the screw rod 13 drop as a whole, and in the process of the screw rod 13 dropping, the plug-in column 15 is driven to be squeezed as a whole, thereby driving the push plate 16 to move in the process of the plug-in column 15 moving, and the push plate 16 drives the reset spring 17 to be compressed as a whole, and enters the annular groove in the process of the plug-in column 15 extending out, thereby completing the overall installation of the heat dissipation duct 5, and when the heat dissipation duct 5 needs to be disassembled and maintained later, the overall disassembly and replacement of the heat dissipation duct 5 can be quickly realized, thereby ensuring the smooth progress of subsequent work.

[0030] A cover plate 14 is fixed near the top of the positioning tube 12. The cover plate 14 is located above the penetration hole 10, and the cover plate 14 covers the top of the penetration hole 10. A limiting block 141 is symmetrically fixed to the bottom of the cover plate 14, and a limiting groove 101 is symmetrically provided at the outer edge of the penetration hole 10. The limiting groove 101 and the limiting block 141 are plugged in with each other.

[0031] Through the cooperation between the limit groove 101 and the limit block 141, it can be ensured that the positioning tube 12 can be stably inserted into the penetration hole 10 during operation, and the overall rotation of the positioning tube 12 affecting subsequent positioning can be avoided as much as possible during the rotation of the screw rod 13.

[0032] Working principle:

[0033] During operation, when the heat dissipation duct 5 needs to be installed, the heat dissipation duct 5 is placed on the top of the unit body 1, and the installation hole 9 and the through hole 10 are aligned, the positioning assembly 11 is plugged and installed in the through hole 10, and the limit block 141 is plugged into the corresponding limit groove 101, and the protruding block 131 is rotated, and the protruding block 131 drives the screw rod 13 to rotate as a whole, and the positioning cylinder 12 and the screw rod 13 are threadedly matched, so that the screw rod 13 is lowered as a whole, and in the process of the screw rod 13 descending, the plug-in column 15 is driven to be squeezed as a whole, thereby driving the push plate 16 to move in the process of the plug-in column 15 moving, and the push plate 16 drives the reset spring 17 to be compressed as a whole, and enters the annular groove in the process of the plug-in column 15 extending, thereby completing the overall installation of the heat dissipation duct 5.

[0034] During operation, the heat dissipation motor is started, and the heat dissipation motor drives the heat dissipation fan 4 to rotate as a whole. During the rotation of the heat dissipation fan 4, the airflow is driven to perform auxiliary heat dissipation treatment on the condenser. The noise generated by the airflow in the heat dissipation process is initially reduced by the noise reduction plate 7. The airflow passes through the breathable mesh plate 8 and is sequentially wound around the low-frequency sound-absorbing cotton 6, thereby performing secondary noise reduction treatment on the noise generated by the airflow.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A noise reduction device for an air source heat pump unit, the noise reduction device for an air source heat pump unit comprising a unit body (1), characterized in that: A condenser is arranged on the unit body (1), an air guide tube is symmetrically arranged at the top of the unit body (1), a cross-shaped fixing frame is fixed in the air guide tube, and a heat dissipation fan (4) is rotatably arranged on the fixing frame; A heat dissipation duct (5) is installed at the top of the unit body (1), an air guide cavity is provided inside the heat dissipation duct (5), a breathable mesh plate (8) is installed at the middle section of the air guide cavity, a plurality of the breathable mesh plates (8) are arranged in a fan shape in the air guide cavity, a noise reduction plate (7) is installed between two of the breathable mesh plates (8) corresponding to the inner side of the heat dissipation duct (5), an air outlet is provided at one end of the air guide cavity, a low-frequency sound-absorbing cotton (6) is installed at the heat dissipation duct (5) corresponding to the air outlet, a plurality of the low-frequency sound-absorbing cotton (6) are arranged, and a plurality of the low-frequency sound-absorbing cottons (6) are arranged with an S-shaped air guide channel at the air outlet.

2. A noise reduction device for an air source heat pump unit according to claim 1, characterized in that: The top of the unit body (1) is symmetrically drilled with mounting holes (9), the inner edge of the mounting holes (9) is provided with an annular groove, the outer side of the heat dissipation air cylinder (5) is symmetrically provided with a fixing cavity, the fixing cavity is provided with a through hole (10), and the mounting holes (9) and the through hole (10) are positioned in coordination with each other through a positioning assembly (11).

3. A noise reduction device for an air source heat pump unit according to claim 2, characterized in that: The positioning assembly (11) comprises a positioning cylinder (12), a thread groove is vertically provided inside the positioning cylinder (12), a screw rod (13) is threadedly installed in the thread groove, a sliding cavity is symmetrically provided at the bottom of the positioning cylinder (12) corresponding to the thread groove, a push plate (16) is slidably arranged in the sliding cavity, a plug-in column (15) is installed on the push plate (16), a reset spring (17) is installed in the sliding cavity to assist the push plate (16) in pushing the reset, and a protruding block (131) is fixed at the top of the screw rod (13).

4. A noise reduction device for an air source heat pump unit according to claim 3, characterized in that: The bottom of the screw rod (13) is conical, the plug-in column (15) is oblong, and the screw rod (13) and the plug-in column (15) are matched and extruded.

5. The noise reduction device for an air source heat pump unit according to claim 3, characterized in that: A covering plate (14) is fixed near the top of the positioning tube (12); the covering plate (14) is located above the penetration hole (10), and the covering plate (14) covers the top of the penetration hole (10).

6. A noise reduction device for an air source heat pump unit according to claim 5, characterized in that: A limiting block (141) is symmetrically fixed on the bottom of the cover plate (14), and a limiting groove (101) is symmetrically provided at the outer edge of the penetration hole (10), and the limiting groove (101) is plugged in and matched with the limiting block (141).

7. The noise reduction device for an air source heat pump unit according to claim 1, characterized in that: Two condensers are provided, and the two condensers are arranged in a V shape, and a sound insulation blocking frame (2) is fixed on the outer side of the condenser.

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