Outdoor unit noise reduction structure and heat pump equipment

Abstract

The utility model belongs to the technical field of heat exchange equipment, and particularly relates to an outdoor unit noise reduction structure and heat pump equipment.The outdoor unit noise reduction structure comprises a sound absorption air channel, the sound absorption air channel is arranged in a shell of an outdoor unit, and one end of the sound absorption air channel communicates with an air inlet of the outdoor unit; the section area of the end, away from the air inlet, of the sound-absorbing air channel is larger than that of the end, close to the air inlet, of the sound-absorbing air channel. The sound-absorbing air channel is used for containing at least part of fan blades of the outdoor unit. According to the outdoor unit noise reduction structure and the heat pump equipment, noise generated when the fan blades in the outdoor unit of the heat pump equipment work is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of heat exchange equipment, specifically relating to an outdoor unit noise reduction structure and a heat pump device. Background Technology

[0002] A heat pump air conditioner is a highly efficient and energy-saving device that uses the principle of a heat pump to heat or cool. Its core components include a compressor and a heat exchanger, which control the indoor temperature by absorbing or expelling heat from the air.

[0003] The heat pump air conditioner of the relevant technology includes an outdoor unit, which includes a casing, fan blades, a drive unit and an evaporator. The fan blades are rotatably connected inside the casing. The drive unit is used to drive the fan blades to rotate. The evaporator is located inside the casing. The function of the evaporator is to absorb heat from the outside air in cooling mode or to release heat to the outside air in heating mode. The function of the fan blades is to accelerate the airflow over the surface of the evaporator to improve the heat transfer efficiency and heat dissipation performance of the evaporator.

[0004] However, when the fan blades rotate, the airflow entering the casing increases vibration and airflow turbulence, resulting in significant noise from the outdoor unit during operation. Utility Model Content

[0005] This application provides an outdoor unit noise reduction structure and a heat pump device to solve the technical problem that the fan blades in related technologies cause the outdoor unit to generate a lot of noise when rotating.

[0006] On the one hand, this application provides an outdoor unit noise reduction structure, including:

[0007] A sound-absorbing duct is disposed inside the casing of the outdoor unit. One end of the sound-absorbing duct is connected to the air inlet of the outdoor unit. The cross-sectional area of ​​the end of the sound-absorbing duct away from the air inlet is larger than the cross-sectional area of ​​the end closer to the air inlet. The sound-absorbing duct is used to accommodate at least a portion of the fan blades of the outdoor unit.

[0008] The sound-absorbing duct includes a connecting section and a flange. One end of the connecting section is connected to the air inlet of the outdoor unit. The flange is located at the end of the connecting section away from the air inlet, and the diameter of the flange gradually increases in the direction away from the connecting section.

[0009] In some embodiments, the cross-sectional area of ​​the sound-absorbing duct gradually increases in the direction away from the air inlet.

[0010] In some embodiments, the sound-absorbing duct includes at least two connecting portions, which are joined together to form the sound-absorbing duct.

[0011] In some embodiments, the sound-absorbing duct is configured as a foam component.

[0012] In some embodiments, a connecting plate is provided on the outer wall of the sound-absorbing duct along the circumference of the sound-absorbing duct, and the connecting plate is used to connect with the inner wall of the housing.

[0013] In some embodiments, the side of the connecting segment closest to the air inlet is designated as the connecting side, and the thickness of the connecting side is greater than or equal to 10 mm.

[0014] In some embodiments, the thickness of the connecting segment is the same as the thickness of the connecting side.

[0015] In some embodiments, a partition plate is further included, which is detachably connected to the housing and is used to divide the housing into a first installation space and a second installation space, wherein the sound-absorbing duct is disposed in the first installation space.

[0016] Secondly, this application provides a heat pump device, including an outdoor unit and an outdoor unit noise reduction structure disposed on the outdoor unit.

[0017] This application provides an outdoor unit noise reduction structure and a heat pump device. The outdoor unit noise reduction structure provided by this application sets a sound-absorbing air duct inside the casing, and the cross-sectional area of ​​the end of the sound-absorbing air duct away from the air inlet is larger than the cross-sectional area of ​​the end closer to the air inlet. This allows the end with the larger cross-sectional area of ​​the sound-absorbing air duct to accommodate more fan blades. When the fan blades rotate, the sound-absorbing air duct can wrap around part of the fan blades and prevent airflow from flowing into the casing, thereby reducing airflow disturbance and preventing resonance between the airflow and the casing. This reduces the noise generated by the fan blades during operation. Furthermore, the sound-absorbing air duct can absorb some of the noise generated by the fan blades during rotation, thereby preventing noise generated by resonance between the fan blades and the sound-absorbing air duct, further reducing the noise generated by the fan blades during rotation and preventing the noise generated by the fan blades from affecting the user. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0019] Figure 1 This is a cross-sectional structural diagram of the outdoor unit noise reduction structure provided in the embodiments of this application;

[0020] Figure 2 for Figure 1 A structural diagram from another angle;

[0021] Figure 3 for Figure 1 Schematic diagram of the sound-absorbing air duct and connecting plate;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure of the sound-absorbing air duct and the casing.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100. Housing; 110. Air inlet;

[0025] 120. Exterior casing; 130. Chassis; 140. Left side panel;

[0026] 150. Middle partition; 151. First installation space; 152. Second installation space;

[0027] 200. Sound-absorbing air duct; 210. Flanged edge; 211. Connecting section;

[0028] 220. Connecting part;

[0029] 230. Connecting plate;

[0030] 240. Connecting side;

[0031] 300. Fan blades;

[0032] 400. Evaporator.

[0033] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] The heat pump air conditioner of the relevant technology includes an outdoor unit, which includes a casing, fan blades, a drive unit and an evaporator. The fan blades are rotatably connected inside the casing. The drive unit is used to drive the fan blades to rotate. The evaporator is located inside the casing. The function of the evaporator is to absorb heat from the outside air in cooling mode or to release heat to the outside air in heating mode. The function of the fan blades is to accelerate the airflow over the surface of the evaporator to improve the heat transfer efficiency and heat dissipation performance of the evaporator.

[0036] However, when the fan blades rotate, the airflow entering the casing increases vibration and airflow disturbance, resulting in greater noise from the outdoor unit during operation.

[0037] To address the aforementioned technical problems, this application provides an outdoor unit noise reduction structure and a heat pump device. When the fan blades are rotating, because some of the fan blades are located within the connecting section and the flange, and the sound-absorbing duct is made of foam, the connecting section and the flange can prevent airflow from flowing into the housing, reducing airflow disturbance within the housing and preventing resonance between the airflow and the housing. This allows the connecting section and the flange to effectively enclose the fan blades, and the foam-made sound-absorbing duct can absorb some noise, thereby reducing the noise generated when the fan blades are rotating and preventing the noise generated by the outdoor unit's fan blades from affecting the user.

[0038] The technical solutions of this application and how they solve the aforementioned technical problems are described in detail below with specific embodiments. These specific embodiments may exist independently or in combination with each other. Identical or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0039] Combination Figure 1 and Figure 2 An outdoor unit noise reduction structure, comprising:

[0040] The sound-absorbing duct 200 is disposed inside the housing 100 of the outdoor unit. One end of the sound-absorbing duct 200 is connected to the air inlet 110 of the outdoor unit. The cross-sectional area of ​​the end of the sound-absorbing duct 200 away from the air inlet 110 is larger than the cross-sectional area of ​​the end closer to the air inlet 110. The sound-absorbing duct 200 is used to accommodate at least a portion of the fan blades 300 of the outdoor unit.

[0041] In this embodiment, the housing 100 includes a cover 120, a chassis 130, and a left side plate 140. An air inlet 110 is disposed on the cover 120 of the housing 100. The chassis 130 is connected to one side edge of the cover 120. The left side plate 140 is connected to the cover 120 adjacent to one side edge of the chassis 130, and the left side plate 140 is connected to the chassis 130. The chassis 130 is perpendicular to the cover 120, the left side plate 140 is perpendicular to the cover 120, and the left side plate 140 is perpendicular to the chassis 130.

[0042] In this application, a sound-absorbing duct 200 is provided inside the housing 100, and the cross-sectional area of ​​the end of the sound-absorbing duct 200 away from the air inlet 110 is larger than the cross-sectional area of ​​the end closer to the air inlet 110. This allows the end of the sound-absorbing duct 200 with a larger cross-sectional area to accommodate more fan blades 300. When the fan blades 300 rotate, the sound-absorbing duct 200 can wrap around part of the fan blades 300 and prevent airflow from flowing into the housing 100, thereby reducing airflow disturbance and preventing resonance between the airflow and the housing 100, thus reducing the noise generated by the fan blades 300 during operation. Furthermore, the sound-absorbing duct 200 can absorb some of the noise generated by the fan blades 300 during rotation, thereby preventing noise from being generated by resonance between the fan blades 300 and the sound-absorbing duct 200, further reducing the noise generated by the fan blades 300 during rotation and preventing the noise generated by the fan blades 300 from affecting the user.

[0043] Combination Figure 1 and Figure 2 The sound-absorbing duct 200 includes a connecting section 211 and a flange 210. One end of the connecting section 211 is connected to the air inlet 110 of the outdoor unit. The flange 210 is located at the end of the connecting section 211 away from the air inlet 110. The diameter of the flange 210 gradually increases in the direction away from the connecting section 211.

[0044] In this embodiment, both the connecting segment 211 and the flange 210 are used to accommodate at least a portion of the fan blade.

[0045] By adopting the design of the flange 210 and gradually increasing the diameter of the flange 210 away from the air inlet 110, the flange 210 with its gradually increasing diameter can accommodate more fan blades 300, allowing more fan blades 300 to enter the sound-absorbing duct 200. This further improves the envelopment of the fan blades 300 by the sound-absorbing duct 200 and the flange 210, thereby further reducing the noise generated by the fan blades 300 during operation.

[0046] In this embodiment, one side of the connecting segment 211 can be connected to the inner wall of the housing 100 by pasting, or the connecting segment 211 can be connected to the inner wall of the housing 100 by snap-fitting. For example, a snap-fitting block can be provided on the inner wall of the housing 100, and a snap-fitting groove can be provided on the connecting segment 211. By interfering with the snap-fitting block and the snap-fitting groove, the connecting segment 211 can be connected to the inner wall of the housing 100.

[0047] In this application, by setting one side of the connecting section 211 on the inner wall of the housing 100, the housing 100 can support the connecting section 211, thereby improving the fixing strength of the sound-absorbing duct 200 in the housing 100, eliminating the need for other supporting components in the housing 100 to support the sound-absorbing duct 200; and when the fan blade 300 blows airflow toward the evaporator 400, it can prevent some air from flowing into the housing 100 along the gap between the connecting section 211 and the housing 100, thereby further preventing resonance between the airflow and the housing 100 and reducing airflow disturbance, thereby further reducing the noise generated by the fan blade 300 during operation, and indirectly improving the heat transfer efficiency and heat dissipation performance of the evaporator 400.

[0048] Combination Figure 1 and Figure 2 The air inlet 110 is circular, and the sound-absorbing air duct 200 is designed to work in conjunction with the circular air inlet 110.

[0049] In other embodiments, the air inlet 110 can also be set as a rectangle, and the sound-absorbing air duct 200 can be configured in conjunction with the rectangular air inlet 110.

[0050] This application sets the air inlet 110 to be circular and sets the sound-absorbing air duct 200 in conjunction with the air inlet 110. Since the fan blade 300 usually forms a circular area when rotating, the fan blade 300 can better match the circular air inlet 110, thereby drawing more air through the evaporator 400, thus further improving the heat transfer efficiency and heat dissipation performance of the evaporator 400. Furthermore, setting both the air inlet 110 and the sound-absorbing air duct 200 to be circular facilitates the production and manufacturing of the circular air inlet 110 and the sound-absorbing air duct 200.

[0051] Combination Figure 1 and Figure 3 The sound-absorbing duct 200 includes at least two connecting parts 220, which are spliced ​​together to form the sound-absorbing duct 200.

[0052] In this embodiment, two connecting parts 220 are provided, both of which are semi-circular rings. The notches of the two semi-circular rings are arranged opposite each other, so that the two semi-circular ring connecting parts 220 can be spliced ​​together to form a circular sound-absorbing air duct 200. In other embodiments, four connecting parts 220 can also be provided. By setting all four connecting parts 220 to be arc-shaped, the four connecting parts 220 can also be spliced ​​together to form a circular sound-absorbing air duct 200.

[0053] In this application, by including at least two connecting parts 220 in the sound-absorbing duct 200, the installation of the sound-absorbing duct 200 is facilitated, and the ease of assembly and disassembly of the sound-absorbing duct 200 is improved; and the sound-absorbing duct 200 can be obtained by mass-producing individual connecting parts 220 and splicing multiple connecting parts 220, which facilitates the production and manufacturing of the sound-absorbing duct 200; by using different numbers of connecting blocks, different numbers of connecting blocks can be spliced ​​to form sound-absorbing ducts 200 of different diameters, so that sound-absorbing ducts 200 of different diameters can be adapted to air inlets 110 of different sizes, thereby improving the applicability of the sound-absorbing duct 200.

[0054] The sound-absorbing air duct 200 is made of foam.

[0055] In other embodiments, the sound-absorbing duct 200 may also be made of fiberglass, rock wool or sound-absorbing rubber.

[0056] In this application, a sound-absorbing duct 200 using foam components is employed. Foam has excellent sound absorption properties, which can effectively reduce the noise generated when the fan blades 300 rotate. Foam is generally lighter than traditional metal or plastic ducts, which helps to reduce the weight of the sound-absorbing duct 200 and further facilitates its manufacturing. Foam has good thermal insulation properties, which can reduce heat transfer and maintain a stable airflow temperature inside the sound-absorbing duct 200. Foam can absorb vibrations, reducing the transmission of vibrations generated when the fan blades 300 rotate to the housing 100. Foam has a relatively low cost, which can reduce production costs. Foam material is easy to cut and shape, and the shape and size of the sound-absorbing duct 200 can be customized as needed. Foam is generally recyclable and has a small environmental impact. Foam has good resistance to many chemicals and is suitable for use in chemical environments.

[0057] Combination Figure 1 and Figure 3 A connecting plate 230 is provided on the outer wall of the sound-absorbing duct 200 along the circumference of the sound-absorbing duct 200. The connecting plate 230 is used to connect with the inner wall of the housing 100.

[0058] In this embodiment, the connecting plate 230 is disposed at one end of the connecting section 211 near the air inlet 110. The area of ​​the connecting plate 230 is the same as the area of ​​the cover 120. The connecting plate 230 is integrally disposed with the sound-absorbing air duct 200, thereby improving the strength of the sound-absorbing air duct 200. In other embodiments, the connecting plate 230 can also be made of a different material than the sound-absorbing air duct 200, for example, the connecting plate 230 can be made of metal. By connecting the sound-absorbing air duct 200 to both the connecting plate 230 and the cover 120, the strength of the sound-absorbing air duct 200 can also be improved.

[0059] In this application, by using the connecting plate 230, the connection area between the sound-absorbing duct 200 and the inner wall of the housing 100 is indirectly increased, thereby further improving the fixing strength of the sound-absorbing duct 200 to the inner wall of the housing 100 and preventing the connection between the foam-made sound-absorbing duct 200 and the housing 100 from breaking.

[0060] The side of the connecting section 211 closest to the air inlet 110 is designated as the connecting side 240, and the thickness of the connecting side 240 is greater than or equal to 10mm.

[0061] In this embodiment, the thickness of the connecting side 240 is set to 10mm. In other embodiments, the thickness of the connecting side 240 may be less than 10mm.

[0062] In this application, by making the thickness of the connecting side 240 greater than or equal to 10 mm, the connection strength between the side of the connecting segment 211 near the housing 100 and the housing 100 is further improved, preventing the connection position between the connecting segment 211 and the housing 100 from breaking.

[0063] The thickness of the connecting section 211 is the same as the thickness of the connecting side 240.

[0064] In other embodiments, the thickness of the portion of the sound-absorbing duct 200 away from the connection side 240 can be gradually reduced in the direction away from the connection side 240, thereby reducing the amount of material used in the sound-absorbing duct 200.

[0065] In this application, by making the thickness of the connecting segment 211 the same as the thickness of the connecting side 240, the thickness of the entire connecting segment 211 is guaranteed, the overall strength of the connecting segment 211 is improved, thereby preventing the connecting segment 211 from cracking and indirectly improving the noise reduction performance of the connecting segment 211 when the fan blade 300 rotates.

[0066] The outdoor unit noise reduction structure also includes a middle partition 150, which is detachably connected to the housing 100. The middle partition 150 is used to divide the housing 100 into a first installation space 151 and a second installation space 152. The sound-absorbing air duct 200 is disposed in the first installation space 151.

[0067] In this embodiment, the middle partition 150 and the left side panel 140 are arranged opposite to each other, and the evaporator 400 of the outdoor unit is used to be arranged between the middle partition 150 and the left side panel 140. The middle partition 150 is detachably connected between the cover 120 and the evaporator 400 by bolts.

[0068] In this application, by using a partition 150, the housing 100 can be divided into a first installation space 151 and a second installation space 152. By setting the sound-absorbing air duct 200 in the first installation space 151, the noise generated when the fan blade 300 rotates is prevented from propagating into the second installation space 152, thereby further reducing the noise generated when the fan blade 300 rotates.

[0069] In some embodiments, the cross-sectional area of ​​the sound-absorbing duct 200 gradually increases in the direction away from the air inlet 110.

[0070] The sound-absorbing duct 200 has a circular cross-section, and the diameter of the circular sound-absorbing duct 200 gradually increases in the direction away from the air inlet 110. By gradually increasing the overall diameter of the sound-absorbing duct 200 in the direction away from the air inlet 110, it is easier to manufacture the entire sound-absorbing duct 200 and to install more fan blades 300 inside the sound-absorbing duct 200, thereby improving the enveloping effect of the sound-absorbing duct 200 on the fan blades 300 and further reducing the noise generated by the fan blades 300 when rotating.

[0071] This application also provides a heat pump device, including an outdoor unit and an outdoor unit noise reduction structure of any of the above embodiments installed on the outdoor unit.

[0072] The specific structure of the outdoor unit noise reduction structure has been described in detail in the above embodiments, and will not be repeated here.

[0073] In this embodiment, the heat pump device is configured as a heat pump air conditioner, and the outdoor unit is the outdoor unit of the heat pump air conditioner. In other embodiments, the heat pump device may also be configured as a heat pump water heater or a heat pump floor heating system, or other devices.

[0074] The heat pump equipment provided in this application embodiment, by setting an outdoor unit noise reduction structure, when the fan blades 300 are rotating, because part of the fan blades 300 are located within the connecting section 211 and the flange 210, and the connecting section 211 and the flange 210 are made of foam, the connecting section 211 and the flange 210 can prevent airflow from flowing into the housing 100, reducing the disturbance of airflow within the housing 100, and preventing resonance between the airflow and the housing 100, so that the sound-absorbing duct 200 and the flange 210 can have a wrapping effect on the fan blades 300, and the sound-absorbing duct 200 made of foam can absorb some noise, thereby reducing the noise generated when the fan blades 300 are rotating, and preventing the noise generated by the outdoor unit's fan blades 300 during operation from affecting the user.

[0075] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An outdoor unit noise reduction structure, characterized in that, include: A sound-absorbing duct (200) is disposed inside the housing (100) of the outdoor unit. One end of the sound-absorbing duct (200) is connected to the air inlet (110) of the outdoor unit. The cross-sectional area of ​​the end of the sound-absorbing duct (200) away from the air inlet (110) is larger than the cross-sectional area of ​​the end closer to the air inlet (110). The sound-absorbing duct (200) is used to accommodate at least a portion of the fan blades (300) of the outdoor unit.

2. The outdoor unit noise reduction structure according to claim 1, characterized in that, The sound-absorbing duct (200) includes a connecting section (211) and a flange (210). One end of the connecting section (211) is connected to the air inlet (110) of the outdoor unit. The flange (210) is located at the end of the connecting section (211) away from the air inlet (110). The diameter of the flange (210) gradually increases in the direction away from the connecting section (211).

3. The outdoor unit noise reduction structure according to claim 1, characterized in that, The cross-sectional area of ​​the sound-absorbing duct (200) gradually increases in the direction away from the air inlet (110).

4. The outdoor unit noise reduction structure according to any one of claims 1-3, characterized in that, The sound-absorbing duct (200) includes at least two connecting parts (220), and each of the connecting parts (220) is spliced ​​together to form the sound-absorbing duct (200).

5. The outdoor unit noise reduction structure according to any one of claims 1-3, characterized in that, The sound-absorbing air duct (200) is made of foam.

6. The outdoor unit noise reduction structure according to any one of claims 1-3, characterized in that, A connecting plate (230) is provided on the outer wall of the sound-absorbing duct (200) along the circumference of the sound-absorbing duct (200), and the connecting plate (230) is used to connect to the inner wall of the housing (100).

7. The outdoor unit noise reduction structure according to claim 2, characterized in that, The side of the connecting section (211) near the air inlet (110) is designated as the connecting side (240), and the thickness of the connecting side (240) is greater than or equal to 10 mm.

8. The outdoor unit noise reduction structure according to claim 7, characterized in that, The thickness of the connecting segment (211) is the same as the thickness of the connecting side (240).

9. The outdoor unit noise reduction structure according to any one of claims 1-3, characterized in that, It also includes a partition (150) for detachably connecting to the housing (100), the partition (150) for dividing the housing (100) into a first installation space (151) and a second installation space (152), and the sound-absorbing air duct (200) is disposed in the first installation space (151).

10. A heat pump device, characterized in that, It includes an outdoor unit and an outdoor unit noise reduction structure as described in any one of claims 1-9, which is installed on the outdoor unit.

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