Fresh air module of air conditioner and air conditioner

Abstract

The fresh air module comprises a shell assembly and a fan assembly, the shell assembly comprises a volute and a partition plate, and the volute is a centrifugal volute and comprises a first volute and a second volute which are spliced in the axial direction; the contour shape of the partition plate is matched with the shape of a shell cavity of the first volute so that the partition plate can be arranged in the first volute, a motor bin and a resonant cavity are formed between the partition plate and a volute chamber part of the first volute, a first noise reduction cavity is formed between the partition plate and an air outlet diffusion part of the first volute, and a resonant hole opposite to and communicated with the resonant cavity penetrates through the partition plate; the first noise reduction hole is opposite to and communicates with the first noise reduction cavity, and a first sound absorption part is arranged in the first noise reduction cavity; the fan assembly comprises a motor and a wind wheel, the wind wheel is arranged on the side, facing the second volute, of the partition plate, an air inlet is formed in the side, away from the partition plate, of the second volute, and the motor is arranged in the motor bin and connected with the wind wheel through a rotating shaft penetrating through the partition plate. Therefore, the overall noise of the fresh air module can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to a fresh air module of an air conditioner and the air conditioner. Background Art

[0002] With the development of science and technology and the improvement of people's consumption level, users' requirements for indoor environment are also constantly increasing. People stay indoors for 80% of the day, and the silent function and fresh air function of air conditioners will seriously affect people's comfort. In related technologies, the noise of fresh air air conditioners will increase when the fresh air volume is large, resulting in the inability to balance the fresh air volume and noise, and there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a fresh air module of an air conditioner, in which the noise in the volute can be concentrated in the air duct cavity, so that the noise can enter the resonance cavity more quickly for noise reduction, and the noise propagating outward along the air duct cavity can flow into the first noise reduction cavity for noise reduction, which is conducive to reducing the overall noise of the fresh air module.

[0004] The fresh air module of the air conditioner according to the embodiment of the utility model comprises: a shell component, the shell component comprises a volute and a partition, the volute is a centrifugal volute and comprises a first volute and a second volute that are spliced ​​together along the axial direction, the contour shape of the partition matches the shell cavity shape of the first volute so as to be arranged in the first volute, a motor compartment and a resonance cavity are formed between the partition and the volute chamber of the first volute, a first noise reduction cavity is formed between the partition and the air outlet and pressure diffusion portion of the first volute, a resonance hole that is opposite to and connected to the resonance cavity and a first noise reduction hole that is opposite to and connected to the first noise reduction cavity are penetrated on the partition, and a first sound absorbing member is arranged in the first noise reduction cavity; a fan component, the fan component comprises a motor and a wind wheel, the wind wheel is arranged on a side of the partition facing the second volute, an air inlet is formed on a side of the second volute away from the partition, the motor is arranged in the motor compartment and is connected to the wind wheel through a rotating shaft that penetrates the partition.

[0005] According to the fresh air module of the air conditioner in the embodiment of the utility model, a partition is arranged between the motor and the wind wheel, so that the noise in the volute can be concentrated in the air duct cavity, so that the noise can enter the resonance cavity more quickly for noise reduction, and a first noise reduction cavity is formed between the partition and the air outlet diffuser of the first volute, so that the noise propagating outward along the air duct cavity can flow into the first noise reduction cavity for noise reduction, which is beneficial to reducing the overall noise of the fresh air module.

[0006] According to the fresh air module of the air conditioner in some embodiments of the present invention, an annular space arranged around the motor compartment is formed between the partition and the volute chamber of the first volute, and the annular space is divided into a plurality of resonance cavities arranged circumferentially and isolated from each other.

[0007] According to the fresh air module of the air conditioner in some embodiments of the utility model, the annular spaces are multiple and concentrically arranged, and the resonance cavities of adjacent annular spaces are staggered along the circumferential direction.

[0008] According to the fresh air module of the air conditioner in some embodiments of the utility model, the first volute is provided with a first rib, the first rib is arranged around the motor compartment, there are multiple first ribs, the multiple first ribs are arranged at intervals along the radial direction of the rotating shaft and define a plurality of the annular spaces, and a plurality of second ribs are provided between two adjacent first ribs, and the plurality of second ribs divide the annular space into a plurality of the resonance chambers along the circumferential direction.

[0009] According to the fresh air module of the air conditioner in some embodiments of the utility model, the circular angle α of the resonance cavity ranges from 33° to 75°; and / or the radial width RX of the resonance cavity is greater than or equal to 0.2 times the radius R0 of the wind wheel.

[0010] According to the fresh air module of the air conditioner in some embodiments of the present invention, the resonance hole is located at the center of the arc length direction of the resonance cavity; and / or the width T of the resonance hole in the arc length direction of the resonance cavity ranges from 1 mm to 5 mm.

[0011] According to the fresh air module of the air conditioner in some embodiments of the present invention, the resonance hole is composed of a plurality of micro holes arranged at intervals.

[0012] According to the fresh air module of the air conditioner in some embodiments of the utility model, the port of the air outlet diffuser part of the first volute and the port of the air outlet diffuser part of the second volute constitute the air outlet of the volute, and the air outlet of the volute ends at the volute tongue of the volute along the spiral direction of the volute, and the central angle β between the starting end of the volute in the airflow direction of the first noise reduction cavity and the volute tongue ranges from 60° to 130°.

[0013] According to the fresh air module of the air conditioner in some embodiments of the utility model, the port of the air outlet diffuser of the first volute and the port of the air outlet diffuser of the second volute constitute the air outlet of the volute, and the air outlet of the volute ends at the volute tongue of the volute along the spiral direction of the volute, and on the projection plane perpendicular to the axial direction of the rotating shaft, the width P2 of the first noise reduction cavity is 1-1.5 times the width P1 of the air outlet of the volute.

[0014] According to the fresh air module of the air conditioner in some embodiments of the utility model, the fresh air module also includes an air outlet structure, the air outlet structure is connected to the outside of the volute, an air outlet duct connected to the air outlet of the volute is formed inside the air outlet structure, the fresh air module also includes a sound-absorbing component, the sound-absorbing component includes a mounting part and a second sound-absorbing part, the mounting part is installed outside the air outlet structure and forms a second noise reduction cavity between the mounting part and the air outlet structure, a second noise reduction hole is penetrated through the air outlet structure and is opposite to and connected to the second noise reduction cavity, and the second sound-absorbing part is arranged in the second noise reduction cavity.

[0015] According to the fresh air module of the air conditioner in some embodiments of the utility model, the top of the volute is provided with an air outlet, and the top of the volute is provided with an air outlet structure, an air outlet duct connected with the air outlet is formed in the air outlet structure, and the air outlet structure includes a rear air outlet section extending rearward and upward along the air outlet direction, and a front air outlet section extending forward and upward along the air outlet direction.

[0016] The utility model also provides an air conditioner.

[0017] An air conditioner according to an embodiment of the utility model includes: a fresh air module of the air conditioner according to any of the above embodiments.

[0018] The air conditioner and the fresh air module have the same advantages as those of the prior art, which will not be described in detail here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a cross-sectional view of a fresh air module according to an embodiment of the utility model;

[0021] Figure 2 is an exploded view of a fresh air module according to an embodiment of the utility model;

[0022] Figure 3 It is a schematic diagram of the installation of the motor according to an embodiment of the utility model;

[0023] Figure 4 It is a schematic diagram of the installation of the first volute and the partition according to an embodiment of the utility model;

[0024] Figure 5 is a schematic diagram of a resonant cavity according to an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the installation of the silencer assembly according to an embodiment of the utility model;

[0026] Figure 7 Schematic diagram of an air conditioner according to an embodiment of the utility model.

[0027] Reference numerals:

[0028] Air conditioner 1000,

[0029] Fresh air module 100,

[0030] Shell assembly 1, volute 11, volute tongue 11a, first volute 111, volute chamber 1111 of the first volute, air outlet diffuser 1112 of the first volute, second volute 112, volute chamber 1121 of the second volute, air outlet diffuser 1122 of the second volute, air inlet 1123, air outlet 113, first convex rib 114, second convex rib 115,

[0031] Partition plate 12, resonance hole 121, first noise reduction hole 122,

[0032] Motor compartment 13, annular space 14, resonance cavity 141, first noise reduction cavity 15, air duct cavity 16, first sound absorbing member 17,

[0033] Fan assembly 2, motor 21, rotating shaft 211, wind wheel 22, silencer assembly 3, mounting member 31, second sound absorbing member 32,

[0034] The air outlet structure 4 , the air outlet duct 4a , the rear air outlet section 41 , the front wall 41a , the inlet 411 of the rear air outlet section, the outlet 412 of the rear air outlet section, the front air outlet section 42 , the inlet 421 of the front air outlet section, and the outlet 422 of the front air outlet section. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0036] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0037] Hereinafter, a fresh air module 100 of an air conditioner according to an embodiment of the present invention will be described with reference to the accompanying drawings.

[0038] like Figure 1-Figure 7 As shown, the fresh air module 100 of the air conditioner according to the embodiment of the utility model comprises: a housing assembly 1 and a fan assembly 2, the housing assembly 1 comprises a volute 11 and a partition 12, the volute 11 is a centrifugal volute and comprises a first volute 111 and a second volute 112 which are spliced ​​together along the axial direction, the contour shape of the partition 12 matches the shell cavity shape of the first volute 111 so as to be arranged in the first volute 111, a motor compartment 13 and a resonance cavity 141 are formed between the partition 12 and the volute chamber 1111 of the first volute 111, and the air outlet pressure diffuser 111 of the partition 12 and the first volute 111 is connected to the air outlet pressure diffuser 111 of the first volute 111. 2, a first noise reduction chamber 15 is formed between the partition 12, a resonance hole 121 opposite to and connected to the resonance chamber 141, and a first noise reduction hole 122 opposite to and connected to the first noise reduction chamber 15 are penetrated on the partition 12, and a first sound absorbing member 17 is arranged in the first noise reduction chamber 15; the fan assembly 2 includes a motor 21 and a wind wheel 22, the wind wheel 22 is arranged on the side of the partition 12 facing the second volute 112, and the side of the second volute 112 away from the partition 12 forms an air inlet 1123, the motor 21 is arranged in the motor compartment 13 and is connected to the wind wheel 22 through a rotating shaft 211 penetrating the partition 12.

[0039] As a result, the noise in the volute 11 can be concentrated in the air duct cavity 16, so that the noise can enter the resonance cavity 141 more quickly for noise reduction, and the noise propagating outward along the air duct cavity 16 can flow into the first noise reduction cavity 15 for noise reduction, which is beneficial to reducing the overall noise of the fresh air module 100.

[0040] First, refer to Figure 1-Figure 5 As shown, the air conditioner 1000 is provided with a fresh air module 100, which includes a shell assembly 1, the shell assembly 1 includes a volute 11 and a partition 12, the volute 11 is constructed as a centrifugal volute, the air outlet 113 of the volute 11 is located radially outside the volute 11, and the air inlet 1123 is located on one side of the volute 11 along the axial direction.

[0041] The volute 11 includes a first volute 111 and a second volute 112, which are formed separately, and the first volute 111 and the second volute 112 are spliced ​​together along the axial direction to form the volute 11. The contour shape of the partition 12 matches the shell cavity shape of the first volute 111, so that the partition 12 can be arranged in the first volute 111. During the installation process, the partition 12 can be first installed in the first volute 111, and then the first volute 111 and the second volute 112 are spliced ​​and connected. In this way, the assembly difficulty of the fresh air module 100 can be reduced, and the matching clearance of the fresh air module 100 can be reduced, which is conducive to improving the sealing of the volute 11.

[0042] Among them, a motor compartment 13 and a resonance cavity 141 separated from each other may be formed between the partition 12 and the volute chamber 1111 of the first volute 111, a first noise reduction cavity 15 may be formed between the partition 12 and the air outlet pressure diffuser 1112 of the first volute 111, the first noise reduction cavity 15 is arranged near the air outlet 113, a first sound absorbing member 17 is arranged in the first noise reduction cavity 15, an air duct cavity 16 may be formed between the partition 12 and the second volute 112, and the air duct cavity 16 is respectively connected to the air outlet 113 and the air inlet 1123. It should be noted that the first sound absorbing member 17 may be made of a sound absorbing material, such as sound absorbing foam.

[0043] At the same time, a resonance hole 121 may be provided on the partition 12. The resonance hole 121 penetrates the partition 12 along the thickness direction and is arranged opposite to the resonance cavity 141. The resonance hole 121 is used to connect the resonance cavity 141 and the air duct cavity 16. The resonance hole 121 and the resonance cavity 141 can together form a Helmholtz resonance cavity. The noise in the air duct cavity 16 can flow into the Helmholtz resonance cavity composed of the resonance hole 121 and the resonance cavity 141 to achieve noise reduction. The partition 12 is also provided with a first noise reduction hole 122. The first noise reduction hole 122 penetrates the partition 12 along the thickness direction and is arranged opposite to the first noise reduction cavity 15. The first noise reduction hole 122 is used to connect the first noise reduction cavity 15 and the air duct cavity 16. The noise propagating along the air duct cavity 16 to the air outlet 113 can flow from the first noise reduction hole 122 into the first noise reduction cavity 15 and be absorbed by the first sound absorbing member 17, thereby achieving noise reduction.

[0044] Of course, the first noise reduction hole 122 and the first noise reduction cavity 15 may also be provided to jointly form a Helmholtz resonance cavity, and the present application does not impose any limitation on this.

[0045] The fresh air module 100 also includes a fan assembly 2, which includes a motor 21 and a wind wheel 22. The wind wheel 22 is arranged on the side of the partition 12 facing the second volute 112, so that the wind wheel 22 can be located in the air duct cavity 16. The side of the volute chamber 1121 of the second volute 112 away from the partition 12 forms an air inlet 1123. The motor 21 is arranged in the motor compartment 13. The motor 21 is provided with a rotating shaft 211, which axially penetrates the partition 12 and is connected to the wind wheel 22, so that the motor 21 can drive the wind wheel 22 to rotate. Specifically, when the motor 21 drives the wind wheel 22 to rotate, the wind wheel 22 can inhale the fresh air flow from the air inlet 1123, and the fresh air flow can flow along the air duct cavity 16 and blow into the indoor space through the air outlet 113 to provide fresh air for the indoor space.

[0046] It is understandable that during the flow of the fresh air flow, noise will be generated in the fresh air module 100, such as the vibration noise of the wind wheel 22, the flow noise of the air flow, etc. In this way, the air duct cavity 16 and the motor compartment 13 can be separated by setting a partition 12, so that the noise is concentrated in the air duct cavity 16, and the noise concentrated in the air duct cavity 16 can flow faster to the Helmholtz resonance cavity composed of the resonance hole 121 and the resonance cavity 141 to achieve noise reduction, and when the noise of the air duct cavity 16 propagates along the air duct cavity 16 to the air outlet 113, the noise can flow into the first noise reduction cavity 15 through the first noise reduction hole 122 and be absorbed by the first sound absorbing member 17 to further reduce the noise. In this way, the noise of the fresh air module 100 can be reduced.

[0047] According to the fresh air module 100 of the air conditioner according to the embodiment of the utility model, the partition 12 is arranged between the motor 21 and the wind wheel 22, so that the noise in the volute 11 can be concentrated in the air duct cavity 16, so that the noise can enter the resonance cavity 141 more quickly for noise reduction, and a first noise reduction cavity 15 is formed between the partition 12 and the air outlet diffuser 1112 of the first volute 111, so that the noise propagating outward along the air duct cavity 16 can flow into the first noise reduction cavity 15 for noise reduction, which is beneficial to reducing the overall noise of the fresh air module 100.

[0048] In some embodiments of the present invention, an annular space 14 is formed between the partition 12 and the volute chamber 1111 of the first volute 111 and is arranged around the motor compartment 13 . The annular space 14 is divided into a plurality of resonance cavities 141 arranged circumferentially and isolated from each other.

[0049] For example, refer to Figure 5 As shown, a first rib 114 is provided on the side of the first volute 111 facing the partition 12. The first rib 114 is constructed in an annular shape and is arranged around the motor compartment 13. There are multiple first ribs 114, and the multiple first ribs 114 are arranged at intervals along the radial direction of the rotating shaft 211. The multiple first ribs 114 respectively cooperate with the partition 12 to define multiple annular spaces 14.

[0050] At the same time, a plurality of second convex ribs 115 extending in the radial direction may be provided between two adjacent first convex ribs 114, and the plurality of second convex ribs 115 are provided at intervals along the circumference of the annular space 14 to divide the annular space 14 into a plurality of resonance cavities 141, and the partition plate 12 is provided with a resonance hole 121 corresponding to each resonance cavity 141, so that the resonance cavity 141 can form a Helmholtz resonance cavity with the corresponding resonance hole 121, thereby enabling the plurality of resonance cavities 141 in the same annular space 14 to reduce noise from different circumferential positions. Thus, the noise reduction effect can be improved.

[0051] In some embodiments of the present invention, Figure 5As shown, the annular space 14 can be provided in multiple numbers, the multiple annular spaces 14 are arranged concentrically, and the resonance cavities 141 of adjacent annular spaces 14 are arranged staggered along the circumferential direction. Through the above arrangement, the resonance cavities 141 of adjacent annular spaces 14 can reduce noise from different circumferential positions, which is conducive to improving the noise reduction effect.

[0052] In some embodiments of the present invention, Figure 5 As shown, the resonance cavity 141 is constructed as an arc shape extending around the rotating shaft 211, and the circular angle α of the resonance cavity 141 can be set to a value range of 33° to 75°. For example, the circular angle α of the resonance cavity 141 can be set to 40°; or, the circular angle α of the resonance cavity 141 can be set to 45°; or, the circular angle α of the resonance cavity 141 can be set to 50°; or, the circular angle α of the resonance cavity 141 can be set to 60°, and the present application does not impose any restrictions on this. Through the above-mentioned settings, the noise reduction effect of the resonance cavity 141 can be guaranteed, and the processing difficulties caused by an excessive number of resonance cavities 141 can be avoided, thereby improving the practicality of the fresh air module 100.

[0053] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, the radial width RX of the resonance cavity 141 can be set to be greater than or equal to 0.2 times the radius R0 of the wind wheel 22. In other words, the ratio of the radial width RX of the resonance cavity 141 to the radius R0 of the wind wheel 22 can be set to 0.22, 0.25, 0.3, 0.4, etc. In this way, the noise reduction effect of the resonance cavity 141 can be ensured, and the difficulty in processing caused by too many annular spaces 14 can be avoided, thereby improving the practicality of the fresh air module 100.

[0054] In some embodiments of the present invention, Figure 4-Figure 5 As shown, the resonance hole 121 may be arranged at the central position in the arc length direction of the resonance cavity 141. Through the above arrangement, the space in the resonance cavity 141 may be better utilized, thereby improving the noise reduction effect of the resonance cavity 141.

[0055] In some embodiments of the present invention, Figure 4 As shown, the value range of the width T of the resonance hole 121 in the arc length direction of the resonance cavity 141 is 1 mm to 5 mm. For example, the width T of the resonance hole 121 in the arc length direction of the resonance cavity 141 can be set to 2 mm; or, the width T of the resonance hole 121 in the arc length direction of the resonance cavity 141 can be set to 3 mm; or, the width T of the resonance hole 121 in the arc length direction of the resonance cavity 141 can be set to 4 mm, and the present application does not impose any restrictions on this. Preferably, the width T of the resonance hole 121 in the arc length direction of the resonance cavity 141 can be set to 2.5 mm.

[0056] Through the above arrangement, the Helmholtz resonance cavity formed by the resonance cavity 141 and the resonance hole 121 can have a good vibration reduction effect, which is beneficial to reducing the overall noise of the fresh air module 100.

[0057] In some embodiments of the utility model, the resonance hole 121 may be configured to be composed of a plurality of micro-holes arranged at intervals. For example, the plurality of micro-holes of the same resonance hole 121 may be arranged to extend radially along the wind wheel 22; or, the plurality of micro-holes of the same resonance hole 121 may be arranged to be inclined radially along the wind wheel 22, and the present application does not limit this. Through the above configuration, the structural strength of the partition 12 may be improved, and the arrangement of the resonance cavity 141 may be made more flexible, thereby improving the reliability of the fresh air module 100.

[0058] In some embodiments of the utility model, the port of the air outlet diffuser 1112 of the first volute 111 and the port of the air outlet diffuser 1122 of the second volute 112 constitute the air outlet 113 of the volute 11, and the air outlet 113 of the volute 11 ends at the volute tongue 11a of the volute 11 along the spiral direction of the volute 11, and the central angle β between the starting end of the volute 11 in the airflow direction of the first noise reduction chamber 15 and the volute tongue 11a ranges from 60° to 130°.

[0059] For example, refer to Figure 2 , Figure 4 and Figure 5 As shown, the air outlet diffuser 1112 of the first volute 111 and the air outlet diffuser 1122 of the second volute 112 can be arranged opposite to each other, and the port of the air outlet diffuser 1112 of the first volute 111 and the port of the air outlet diffuser 1122 of the second volute 112 can together form the air outlet 113 of the volute 11. In the spiral direction of the volute 11, the air outlet 113 of the volute 11 ends at the volute tongue 11a of the volute 11, and the air outlet 113 can be arranged opposite to the first noise reduction chamber 15 along the air flow direction of the first noise reduction chamber 15, so that the air flow flowing through the first noise reduction chamber 15 can directly flow to the air outlet 113. Among them, the value range of the central angle β between the starting end of the volute 11 in the air flow direction of the first noise reduction chamber 15 and the volute tongue 11a can be 60° to 130°.

[0060] Exemplarily, the central angle β between the starting end of the volute 11 in the airflow direction of the first noise reduction chamber 15 and the volute tongue 11a can be taken as 75°; or, the central angle β between the starting end of the volute 11 in the airflow direction of the first noise reduction chamber 15 and the volute tongue 11a can be taken as 95°; or, the central angle β between the starting end of the volute 11 in the airflow direction of the first noise reduction chamber 15 and the volute tongue 11a can be taken as 115°, and the present application does not impose any restrictions on this.

[0061] Through the above-mentioned setting, the first noise reduction chamber 15 can have a sufficient size to ensure the noise reduction effect of the first noise reduction chamber 15, and can avoid the first noise reduction chamber 15 being too large to affect the structural layout of the fresh air module 100, thereby improving the design rationality of the fresh air module 100.

[0062] In some embodiments of the present invention, a port of the air outlet diffuser 1112 of the first volute 111 and a port of the air outlet diffuser 1122 of the second volute 112 constitute an air outlet 113 of the volute 11, and the air outlet 113 of the volute 11 ends at the volute tongue 11a of the volute 11 along the spiral direction of the volute 11, and on the axial projection plane perpendicular to the rotating shaft 211, the width P2 of the first noise reduction chamber 15 is 1-1.5 times the width P1 of the air outlet 113 of the volute 11.

[0063] For example, refer to Figure 2 and Figure 4 As shown, the air outlet diffuser 1112 of the first volute 111 and the air outlet diffuser 1122 of the second volute 112 can be arranged relative to each other, and the port of the air outlet diffuser 1112 of the first volute 111 and the port of the air outlet diffuser 1122 of the second volute 112 can together constitute the air outlet 113 of the volute 11.

[0064] Among them, in the spiral direction of the volute 11, the air outlet 113 of the volute 11 can be set to end at the volute tongue 11a of the volute 11. At the same time, on the projection surface perpendicular to the axial direction of the rotating shaft 211, the width P2 of the first noise reduction chamber 15 can be set to be 1-1.5 times the width P1 of the air outlet 113 of the volute 11. Exemplarily, the width P2 of the first noise reduction chamber 15 can be set to be 1.1 times the width P1 of the air outlet 113 of the volute 11; or, the width P2 of the first noise reduction chamber 15 can be set to be 1.25 times the width P1 of the air outlet 113 of the volute 11; or, the width P2 of the first noise reduction chamber 15 can be set to be 1.4 times the width P1 of the air outlet 113 of the volute 11, and the present application does not limit this.

[0065] Through the above configuration, it can be ensured that the fresh air flow flowing to the air outlet 113 can all flow through the first noise reduction chamber 15, thereby ensuring the noise reduction effect of the first noise reduction chamber 15 and helping to reduce the overall noise of the fresh air module 100.

[0066] In some embodiments of the present invention, the fresh air module 100 also includes an air outlet structure 4, which is connected to the outside of the volute 11, and an air outlet duct 4a connected to the air outlet 113 of the volute 11 is formed inside the air outlet structure 4. The fresh air module 100 also includes a silencer component 3, and the silencer component 3 includes a mounting component 31 and a second sound-absorbing component 32. The mounting component 31 is installed outside the air outlet structure 4 and forms a second noise reduction cavity between the mounting component 31 and the air outlet structure 4. A second noise reduction hole opposite to and connected to the second noise reduction cavity is penetrated through the air outlet structure 4, and the second sound-absorbing component 32 is arranged in the second noise reduction cavity.

[0067] For example, refer to Figure 6 As shown, the fresh air module 100 also includes an air outlet structure 4, which is connected to the outside of the volute 11 and is located above the volute 11. The volute 11 is provided with an air outlet 113 corresponding to the air outlet structure 4. The air outlet structure 4 is provided with an air outlet duct 4a. The air outlet 113 is connected to the air outlet duct 4a. The fresh air fluid in the duct cavity 16 can flow into the air outlet duct 4a through the air outlet 113 and flow out to the indoor space through the air outlet duct 4a.

[0068] At the same time, the fresh air module 100 may be provided to further include a muffler assembly 3, the muffler assembly 3 including a mounting member 31 and a second sound absorbing member 32, the mounting member 31 being mounted on the outer peripheral wall of the air outlet structure 4, the mounting member 31 being configured in a groove shape so that the mounting member 31 and the outer peripheral wall of the air outlet structure 4 form a second noise reduction cavity, and the second sound absorbing member 32 is mounted in the second noise reduction cavity. The air outlet structure 4 is provided with a second noise reduction hole, the second noise reduction cavity penetrates the side wall of the air outlet structure 4 in the thickness direction and is opposite to the second noise reduction cavity, and the second noise reduction hole is used to connect the air outlet duct 4a and the second noise reduction cavity, so that the noise in the air outlet duct 4a can flow into the second noise reduction cavity and be absorbed by the second sound absorbing member 32. It should be noted that the second sound absorbing member 32 may be made of a sound absorbing material such as sound absorbing foam.

[0069] Through the above arrangement, the silencer component 3 can reduce the noise in the air outlet duct 4a to reduce the noise flowing out from the flow path of the fresh air flow, thereby reducing the overall noise of the fresh air module 100.

[0070] In some embodiments of the utility model, the top of the volute 11 has an air outlet 113, and the top of the volute 11 is provided with an air outlet structure 4, and an air outlet duct 4a connected to the air outlet 113 is formed in the air outlet structure 4. The air outlet structure 4 includes a rear air outlet section 41 extending rearward and upward along the air outlet direction, and a front air outlet section 42 extending toward the front and upward along the air outlet direction.

[0071] For example, refer to Figure 1 and Figure 2As shown, the top of the volute 11 is provided with an air outlet 113, and an air outlet structure 4 is installed on the top of the volute 11, an air outlet duct 4a is formed in the air outlet structure 4, and the air outlet duct 4a is connected with the air outlet 113. The air outlet structure 4 includes a rear air outlet section 41 and a front air outlet section 42, the rear air outlet section 41 is extended to the rear and upward along the air outlet direction, the upper end of the rear air outlet section 41 is provided with an outlet 412 open to the rear and the lower end is provided with an inlet 411, the inlet 411 of the rear air outlet section 41 is connected to the volute 11 and is connected with the air outlet 113. The front air outlet section 42 is extended to the front and upward along the air outlet direction, the upper end of the front air outlet section 42 is provided with an outlet 422 open to the front and the lower end is provided with an inlet 421, the inlet 421 of the front air outlet section is connected to the front wall 41a of the rear air outlet section 41 and is connected with the rear air outlet section 41.

[0072] Specifically, when the fan assembly 2 is running, the fresh air module 100 can inhale the fresh air flow through the air inlet 1123, the fresh air flow can flow along the air duct cavity 16 and blow into the rear air outlet section 41 through the air outlet 113, the fresh air flow flows along the air outlet duct 4a and is divided into two parts, one part flows along the rear air outlet section 41 to be blown to the rear side of the fresh air module 100 from the outlet 412 of the rear air outlet section 41, and the other part can flow into the front air outlet section 42 to flow along the front air outlet section 42, and be blown out from the outlet 422 of the front air outlet section 42 to the front side of the fresh air module 100. In this way, the air outlet range of the fresh air flow can be increased.

[0073] The utility model also provides an air conditioner 1000 .

[0074] like Figure 7 As shown, the air conditioner 1000 according to the embodiment of the utility model includes: the fresh air module 100 of the air conditioner according to any of the above embodiments.

[0075] According to the air conditioner 1000 of the embodiment of the utility model, by setting the partition 12 between the motor 21 and the wind wheel 22, the noise in the volute 11 can be concentrated in the air duct cavity 16, so that the noise can enter the resonance cavity 141 more quickly for noise reduction, and by forming a first noise reduction cavity 15 between the partition 12 and the air outlet diffuser 1112 of the first volute 111, the noise propagating outward along the air duct cavity 16 can flow into the first noise reduction cavity 15 for noise reduction, which is beneficial to reducing the overall noise of the fresh air module 100 and improving user satisfaction.

[0076] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0080] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0081] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fresh air module for an air conditioner, characterized in that: include: A housing assembly, the housing assembly comprising a volute and a partition, the volute being a centrifugal volute and comprising a first volute and a second volute joined together in the axial direction, the contour shape of the partition matching the shell cavity shape of the first volute so as to be arranged in the first volute, a motor compartment and a resonance cavity being formed between the partition and the volute chamber of the first volute, a first noise reduction cavity being formed between the partition and the air outlet and pressure diffusion portion of the first volute, a resonance hole being opposite to and connected to the resonance cavity, and a first noise reduction hole being opposite to and connected to the first noise reduction cavity penetrating the partition, and a first sound absorbing member being arranged in the first noise reduction cavity; A fan assembly, the fan assembly includes a motor and a wind wheel, the wind wheel is arranged on the side of the partition facing the second volute, the side of the second volute away from the partition forms an air inlet, the motor is arranged in the motor compartment and is connected to the wind wheel through a rotating shaft passing through the partition.

2. The fresh air module of the air conditioner according to claim 1, characterized in that: An annular space arranged around the motor compartment is formed between the partition and the volute chamber portion of the first volute, and the annular space is divided into a plurality of resonance chambers arranged in a circumferential direction and arranged in isolation.

3. The fresh air module of the air conditioner according to claim 2, characterized in that: The annular spaces are multiple and concentrically arranged, and the resonance cavities of adjacent annular spaces are staggered in the circumferential direction.

4. The fresh air module of the air conditioner according to claim 2, characterized in that: The first volute is provided with a first rib, which is arranged around the motor compartment. There are multiple first ribs, and the multiple first ribs are arranged at intervals along the radial direction of the rotating shaft and define multiple annular spaces. Multiple second ribs are provided between two adjacent first ribs, and the multiple second ribs divide the annular space into multiple resonance chambers along the circumferential direction.

5. The fresh air module of the air conditioner according to claim 2, characterized in that: The circular angle α of the resonance cavity has a value range of 33° to 75°; and / or the radial width RX of the resonance cavity is greater than or equal to 0.2 times the radius R0 of the wind wheel.

6. The fresh air module of the air conditioner according to claim 2, characterized in that: The resonance hole is located at a central position of the resonance cavity in the arc length direction; and / or a width T of the resonance hole in the arc length direction of the resonance cavity is in a range of 1 mm to 5 mm.

7. The fresh air module of the air conditioner according to claim 1, characterized in that: The resonance hole is composed of a plurality of micro holes arranged at intervals.

8. The fresh air module of the air conditioner according to claim 1, characterized in that: The port of the air outlet diffuser of the first volute and the port of the air outlet diffuser of the second volute constitute the air outlet of the volute, and the air outlet of the volute ends at the volute tongue of the volute along the spiral direction of the volute, and the central angle β between the starting end of the volute in the airflow direction of the first noise reduction chamber and the volute tongue ranges from 60° to 130°.

9. The fresh air module of the air conditioner according to claim 1, characterized in that: The port of the air outlet diffuser of the first volute and the port of the air outlet diffuser of the second volute constitute the air outlet of the volute, and the air outlet of the volute ends at the volute tongue of the volute along the spiral direction of the volute. On the projection plane perpendicular to the axial direction of the rotating shaft, the width P2 of the first noise reduction cavity is 1-1.5 times the width P1 of the air outlet of the volute.

10. The fresh air module of the air conditioner according to claim 1, characterized in that: The fresh air module also includes an air outlet structure, which is connected to the outside of the volute, and an air outlet duct connected to the air outlet of the volute is formed inside the air outlet structure. The fresh air module also includes a sound-absorbing component, which includes a mounting component and a second sound-absorbing component. The mounting component is installed outside the air outlet structure and forms a second noise reduction cavity between the mounting component and the air outlet structure. A second noise reduction hole opposite to and connected to the second noise reduction cavity is penetrated through the air outlet structure, and the second sound-absorbing component is arranged in the second noise reduction cavity.

11. The fresh air module of the air conditioner according to any one of claims 1 to 10, characterized in that: The top of the volute is provided with an air outlet, and the top of the volute is provided with an air outlet structure, an air outlet duct connected to the air outlet is formed in the air outlet structure, and the air outlet structure includes a rear air outlet section extending rearward and upward along the air outlet direction, and a front air outlet section extending forward and upward along the air outlet direction.

12. An air conditioner, characterized in that: include: A fresh air module for an air conditioner according to any one of claims 1 to 11.

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