Fresh air assembly and air conditioner

Abstract

The invention discloses a fresh air assembly and an air conditioner. The fresh air assembly comprises a shell, a partition plate and a wind wheel, and a cavity is formed in the shell; the partition plate is arranged in the cavity and divides the cavity into an air outlet channel and a worm wheel cavity, the free end of the partition plate and the inner wall of the cavity are arranged at an interval to form an air outlet gap communicating the worm wheel cavity with the air outlet channel, and the air outlet channel extends to the shell and forms an air outlet; the wind wheel is rotatably arranged in the worm wheel cavity; wherein the wind wheel is hidden in the worm wheel cavity and cannot be observed through the air outlet. According to the fresh air assembly, the partition plate is arranged and divides the cavity into the air outlet channel and the worm wheel cavity, airflow generated by rotation of the wind wheel in the worm wheel cavity flows out of the cavity through the air outlet channel, noise can be reduced, and use safety can be improved.

Description

Technical Field

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

[0002] Fresh air air conditioner is an air conditioner with fresh air function. It uses the fan to generate airflow to realize the circulation and exchange between indoor air and outdoor air. At the same time, fresh air air conditioner also has the function of purifying air. Centrifugal fan and purification module are collectively called fresh air module.

[0003] In existing fresh air modules, since the fan is very close to the air outlet, noise is easily transmitted. In order to prevent people from touching the fan, protective ribs need to be installed at the air outlet, which increases wind resistance and reduces air volume. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a fresh air component. According to the fresh air component of the present invention, a partition is provided to separate the cavity into an air outlet channel and a worm wheel cavity. The airflow generated by the rotation of the wind wheel in the worm wheel cavity flows out of the cavity through the air outlet channel, which can reduce noise and improve safety in use.

[0005] The present invention also provides an air conditioner having the fresh air component.

[0006] The fresh air component according to the present invention includes: a shell, a cavity is formed in the shell; a partition, the partition is arranged in the cavity and divides the cavity into an air outlet channel and a worm gear cavity, the free end of the partition is spaced apart from the inner wall of the cavity to form an air outlet gap connecting the worm gear cavity with the air outlet channel, the air outlet channel extends to the shell and forms an air outlet; the wind wheel is rotatably arranged in the worm gear cavity; wherein the wind wheel is hidden in the worm gear cavity and cannot be observed through the air outlet.

[0007] According to the fresh air assembly of the present invention, the wind wheel can generate airflow when rotating in the cavity. By setting a partition, the partition separates the cavity into an air outlet channel and a worm wheel cavity. The wind wheel is set in the worm wheel cavity. The rotation of the wind wheel can generate an airflow from the worm wheel cavity to the air outlet channel. The airflow flows in the air outlet channel and then flows out of the cavity. The formation of the air outlet channel prolongs the time and distance of the airflow from generation to flow out of the cavity. The airflow becomes stable during the flow process, which can reduce the airflow noise. In addition, the partition can isolate the noise generated by the rotation of the wind wheel in the worm wheel cavity, and the noise is not easy to be transmitted. The airflow generated by the rotation of the wind wheel flows from the entrance of the air outlet channel to the exit of the air outlet channel. The exit of the air outlet channel is formed by the connection between one end of the partition and the shell, and the entrance of the air outlet channel is an air outlet gap formed between the other end of the partition and the inner wall of the cavity. The partition separates the outlet of the air outlet channel from the wind wheel, thereby hiding the wind wheel. The wind wheel cannot be observed through the air outlet, so it is difficult for a person's hand to pass through the air outlet channel and touch the wind wheel, thereby improving safety in use. In addition, the setting of the protective ribs in the relevant technology can be cancelled, thereby reducing wind resistance and increasing air output.

[0008] According to some embodiments of the present invention, the distance between the free end of the partition and the inner wall of the cavity is smaller than the distance between the center of the wind wheel and the inner wall of the cavity.

[0009] According to some embodiments of the present invention, a volute tongue protruding toward the air outlet gap is formed at the free end of the partition.

[0010] According to some embodiments of the present invention, the shell includes: a first volute and a second volute, the first volute is connected to the second volute and the worm wheel chamber is defined between the first volute and the second volute, the partition is respectively connected to the first volute and the second volute; an upper shell, the upper shell is arranged on the first volute and the second volute and connected to the partition, and the air outlet channel is defined between the upper shell and the partition.

[0011] According to some embodiments of the present invention, the minimum distance between the volute tongue and the inner wall of the cavity is L1, and the minimum distance between the wind wheel and the inner wall of the cavity is L2, and they satisfy: 0.4≤L2 / L1≤0.7.

[0012] According to some embodiments of the present invention, the width of the shell is L3 and satisfies: 0.3≤L1 / L3≤0.5.

[0013] According to some embodiments of the present invention, the radius of the wind wheel is R1 and satisfies: 0.8≤L1 / R1≤0.9.

[0014] According to some embodiments of the present invention, the fresh air component also includes: a diverter plate, which is arranged in the air outlet channel and extends from the air outlet gap to the outlet of the air outlet channel, and at least a portion of the diverter plate is constructed as an arc convex away from the wind wheel.

[0015] According to some embodiments of the present invention, the diverter plate is configured as a plurality of diverter plates that are spaced apart from each other.

[0016] According to some embodiments of the present invention, the fresh air component also includes: a noise reduction shell, which is arranged on at least one side of the upper shell and forms a noise reduction cavity between the shell and the upper shell; and a noise reduction component, which is arranged in the noise reduction cavity.

[0017] According to some embodiments of the present invention, the upper shell is formed with a communication port, which is arranged on the inner wall of the air outlet channel and connects the air outlet channel with the noise reduction chamber.

[0018] According to some embodiments of the present invention, the communication port is configured as a plurality of communication ports that are spaced apart in the inner wall of the air outlet passage, and each of the communication ports is disposed opposite to the noise reduction component.

[0019] According to some embodiments of the present invention, the upper shell is formed with a recessed portion recessed from the air outlet channel toward the noise reduction chamber, and a plurality of the communication ports spaced apart from each other are formed on the recessed portion.

[0020] According to some embodiments of the present invention, a mounting groove recessed away from each other is formed on at least one of the first volute and the second volute, and at least a portion of the wind wheel is accommodated in the mounting groove.

[0021] According to some embodiments of the present invention, the cross-sectional area of ​​the mounting groove gradually increases in an opening direction toward the mounting groove.

[0022] According to some embodiments of the present invention, a ventilation hole penetrating in the thickness direction is formed on the bottom wall of the mounting groove.

[0023] According to some embodiments of the present invention, the fresh air component further includes: a guide member, which is arranged at the vent and forms a plurality of concentrically arranged annular or arc-shaped air guide ports.

[0024] According to some embodiments of the present invention, an edge of the guide member is connected to the vent and is formed with reinforcing ribs protruding toward the worm gear cavity.

[0025] According to some embodiments of the present invention, the shell further includes: an air inlet shell, on which an air inlet is formed and which is arranged on the first volute, an air inlet channel is defined between the air inlet shell and the first volute, and the air inlet channel connects the air inlet with the vent.

[0026] According to some embodiments of the present invention, the air inlet shell is formed with a first flow path surface, the first volute is formed with a second flow path surface, and the vent is formed on the second flow path surface; the first flow path surface and the second flow path surface are spaced apart in the through direction of the vent to define the air inlet channel; wherein the first flow path surface gradually inclines toward the second flow path surface in the direction from the air inlet to the vent.

[0027] According to some embodiments of the present invention, the first flow channel surface and the second flow channel surface are respectively configured as planes, and an angle between the first flow channel surface and the second flow channel surface is α and satisfies: 0°<α≤70°.

[0028] According to some embodiments of the present invention, the fresh air component further includes: a filter element, at least a portion of which is disposed in the air inlet channel, and the filter element is suitable for filtering the airflow in the air inlet channel.

[0029] According to some embodiments of the present invention, the filter element includes: a filter bracket, which is accommodated in the air inlet channel and arranged between the first volute and the air inlet housing; a filter screen, which is arranged on the filter bracket and located between the first flow channel surface and the second flow channel surface, and the filter screen is suitable for filtering the airflow entering the vent.

[0030] According to some embodiments of the present invention, the minimum distance between the first flow channel surface and the filter screen is S1 and satisfies: 0mm<S1≤70mm, and the maximum distance between the first flow channel surface and the filter screen is S2 and satisfies: S1<S2≤150mm.

[0031] The air conditioner according to the present invention will be briefly described below.

[0032] The air conditioner according to the present invention includes the fresh air component described in any one of the above embodiments. Since the air conditioner according to the present invention includes the fresh air component described in any one of the above embodiments, the air conditioner according to the present invention has a wind wheel of the fresh air component that is deeply hidden in the worm wheel cavity, and noise is not easy to be transmitted, and it is difficult for a person to touch the wind wheel through the air outlet channel, so the noise is small and the safety is good.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 is a front schematic diagram of a fresh air assembly according to an embodiment of the present invention;

[0036] Figure 2 yes Figure 1 Schematic diagram of the middle AA section;

[0037] Figure 3 yes Figure 1 Schematic diagram of the middle BB section;

[0038] Figure 4 is a side schematic diagram of a fresh air assembly according to an embodiment of the present invention;

[0039] Figure 5 yes Figure 4 Schematic diagram of the CC section;

[0040] Figure 6 yes Figure 1 AA section diagram (excluding the wind wheel);

[0041] Figure 7 yes Figure 4 Schematic diagram of the middle DD section;

[0042] Figure 8 yes Figure 1 Schematic diagram of the cross section in the opposite direction of BB.

[0043] Reference numerals:

[0044] Fresh air component 1;

[0045] Shell 11, cavity 110, air outlet channel 110a, worm wheel cavity 110b, air outlet gap 110c, first volute 111, second flow channel surface 111a, second volute 112, side plate 113, first section 113a, second section 113b, upper shell 114, communication port 114a, recessed portion 114b, mounting groove 115, vent 115a;

[0046] Partition plate 12, volute tongue 121;

[0047] Wind wheel 13;

[0048] Divider plate 14;

[0049] Noise reduction shell 15a, noise reduction member 15b;

[0050] Flow guide 16, reinforcing rib 161;

[0051] Air inlet housing 17, air inlet channel 171, first flow channel surface 17a;

[0052] Filter element 18 , filter support 181 , filter screen 182 . DETAILED DESCRIPTION

[0053] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0054] In the related art, since the fan of the existing fresh air module is very close to the air outlet, noise is easily transmitted, and in order to prevent people from touching the fan, it is necessary to set a protective rib at the air outlet, which increases the wind resistance and reduces the air volume.

[0055] Reference below Figure 1-Figure 8 A fresh air assembly 1 according to an embodiment of the present invention is described.

[0056] like Figure 1 and Figure 2 As shown, the fresh air component according to the present invention includes: a shell 11, a cavity 110 is formed in the shell 11; a partition 12, the partition 12 is arranged in the cavity 110 and divides the cavity 110 into an air outlet channel 110a and a worm wheel cavity 110b, the free end of the partition 12 is spaced apart from the inner wall of the cavity 110 to form an air outlet gap 110c that connects the worm wheel cavity 110b with the air outlet channel 110a, and the air outlet channel 110a extends to the shell and forms an air outlet; a wind wheel 13, the wind wheel 13 is rotatably arranged in the worm wheel cavity 110b; wherein the wind wheel 13 is hidden in the worm wheel cavity 110b and cannot be observed through the air outlet.

[0057] In the fresh air assembly 1 of the present application, the wind wheel 13 rotates in the cavity 110 to generate airflow. By setting the partition 12, the partition 12 divides the cavity 110 into the air outlet channel 110a and the worm wheel cavity 110b. The wind wheel 13 is set in the worm wheel cavity 110b. The rotation of the wind wheel 13 can generate an airflow from the worm wheel cavity 110b to the air outlet channel 110a. The airflow flows in the air outlet channel 110a and then flows out of the cavity 110. The formation of the air outlet channel 110a prolongs the time and distance of the airflow from generation to flow out of the cavity 110. The airflow becomes stable during the flow process, which can reduce the airflow noise. In addition, the partition 12 can isolate the noise generated by the rotation of the wind wheel 13 in the worm wheel cavity 110b, and the noise is not easy to be transmitted. The airflow generated by the rotation of the wind wheel 13 flows from the entrance of the air outlet channel 110a to the outlet of the air outlet channel 110a. The outlet of the air outlet channel 110a is formed at the connection between one end of the partition 12 and the shell 11, and the entrance of the air outlet channel 110a is the air outlet gap 110c formed between the other end of the partition 12 and the inner wall of the cavity 110. The wind wheel 13 and the air outlet channel 110a are respectively located on both sides of the partition 12. The partition 12 separates the outlet of the air outlet channel 110a from the wind wheel 13, thereby hiding the wind wheel 13. The wind wheel 13 cannot be observed through the air outlet. Therefore, it is difficult for a person's hand to pass through the air outlet channel 110a to touch the wind wheel 13, thereby improving the safety of use, and the setting of the protective ribs in the relevant technology can be cancelled, thereby reducing wind resistance and increasing the air output.

[0058] According to some embodiments of the present invention, the distance between the free end of the partition 12 and the inner wall of the cavity 110 is smaller than the distance between the center of the wind wheel 13 and the inner wall of the cavity 110. Since the air outlet gap 110c is formed between the free end of the partition 12 and the inner wall of the cavity 110, by constructing the partition 12 and the wind wheel 13 so that the distance between the free end of the partition 12 and the inner wall of the cavity 110 is smaller than the distance between the center of the wind wheel 13 and the inner wall of the cavity 110, it is possible to achieve that the wind wheel 13 cannot be observed through the air outlet gap 110c from the air inlet, thereby achieving the hiding of the wind wheel 13 and improving the safety of use.

[0059] According to some embodiments of the present invention, the free end of the partition 12 is formed with a volute tongue 121 protruding toward the air outlet gap 110c. By providing the volute tongue 121, the volute tongue 121 can guide the flow of air. When the airflow at the air outlet gap 110c passes through the volute tongue 121, it will be divided into two by the volute tongue 121. Most of the airflow flows into the air outlet channel 110a through the air outlet gap 110c, and a small part of the airflow passes through the gap between the partition 12 and the wind wheel 13 in the volute cavity 110b and rotates with the wind wheel 13 for one circle before returning to the volute tongue 121 to participate in new diversion, thereby reducing the gas circulating in the volute cavity 110b and increasing the air volume. The airflow at the volute tongue 121 is unstable, and the airflow hitting the volute tongue 121 will generate noise. Since the volute tongue 121 is located at the air outlet gap 110c, that is, the volute tongue 121 is located at the entrance of the air outlet channel 110a, the volute tongue 121 is far away from the outlet of the air outlet channel 110a, which can further reduce the noise.

[0060] According to some embodiments of the present invention, Figure 1 , Figure 2 and Figure 3As shown, the shell 11 includes a first volute 111, a second volute 112 and an upper shell 114. The first volute 111 and the second volute 112 include a bottom plate and a side plate 113. The side plate 113 is formed at the edge of the bottom plate. The side plate 113 of the first volute 111 and the side plate 113 of the second volute 112 extend toward each other and are connected so that a worm wheel chamber 110b is defined between the first volute 111 and the second volute 112. The partition 12 is arranged between the first volute 111 and the second volute 112. The partition 12 is connected to one end of the side plate 113 and is spaced from the other end of the side plate 113 to form an air outlet gap 110c. The upper shell 114 is arranged on the first volute 111 and the second volute 112 and is connected to the partition 12. The upper shell 114 is connected to the other end of the side plate 113 and defines an air outlet channel 110a between the upper shell 114 and the partition 12. The side plate 113 is the inner wall of the cavity 110, and a worm wheel cavity 110b for airflow is defined between the first volute 111 and the second volute 112. The worm wheel cavity 110b is further defined by providing a partition plate 12, which is provided between the first volute 111 and the second volute 112 and connected to the side plate 113 at one end, and the other end of the partition plate 12 is spaced from the other end of the side plate 113 to form an air outlet gap 110c, so that the airflow generated by the wind wheel 13 in the worm wheel cavity 110b can flow out of the worm wheel cavity 110b through the air outlet gap 110c. By setting the upper shell 114, an air outlet channel 110a is defined between the upper shell 114 and the partition 12, and the upper shell 114 is connected to the other end of the side plate 113, that is, the entrance of the air outlet channel 110a is the air outlet gap 110c formed between the other end of the side plate 113 and the partition 12. Therefore, the airflow flowing out of the worm wheel cavity 110b through the air outlet gap 110c will enter the air outlet channel 110a through the air outlet gap 110c, thereby realizing the separation of the inner cavity 110 of the shell 11 by the partition 12, thereby achieving the effect of reducing noise and hiding the wind wheel 13.

[0061] According to some embodiments of the present invention, Figure 2As shown, the side plate 113 includes a first section 113a and a second section 113b, the first section 113a is configured in an arc shape and is disposed around at least part of the outer periphery of the first volute 111, one end of the first section 113a is connected to the partition 12; one end of the second section 113b is connected to the other end of the first section 113a, and the other end of the second section 113b is connected to the upper shell 114, and the second section 113b is orthogonal to the partition 12 and forms an air outlet gap 110c with the other end of the partition 12. The airflow generated by the wind wheel 13 can flow along the surface of the side plate 113. The side plate 113 is divided into a first section 113a and a second section 113b. The first section 113a is constructed as an arc arranged around at least part of the outer periphery of the first volute 111. The first section 113a can guide the airflow so that the airflow flows along the surface of the second section 113b in the worm wheel chamber 110b as the wind wheel 13 rotates. Since an air outlet gap 110c is formed between the second section 113b and the other end of the partition 12, the airflow flows along the surface of the second section 113b and can enter the air outlet channel 110a through the air outlet gap 110c. The second section 113b is orthogonal to the partition 12, so that the extension direction of the air outlet gap 110c is perpendicular to the flow direction of the airflow, reducing the collision of the airflow with the partition 12 when passing through the air outlet gap 110c, so that the airflow flows from the worm wheel chamber 110b to the air outlet channel 110a uniformly and stably. In particular, the surface of the partition 12 facing the wind wheel 13 can also be constructed as an arc surface arranged around the wind wheel 13, so that the partition 12 and the side plate 113 cooperate to guide the airflow to rotate and flow in the worm wheel cavity 110b.

[0062] According to some embodiments of the present invention, the minimum distance between the volute tongue 121 and the inner wall of the cavity 110 is L1, and the minimum distance between the wind wheel 13 and the inner wall of the cavity 110 is L2 and satisfies: 0.4≤L2 / L1≤0.7. The minimum distance L1 between the volute tongue 121 and the inner wall of the cavity 110 is the minimum distance between the volute tongue 121 and the second section 113b, and the minimum distance L2 between the wind wheel 13 and the second section 113b is the minimum distance between the wind wheel 13 and the second section 113b. The minimum distance between the volute tongue 121 and the second section 113b is also the minimum width of the air outlet gap 110c, and the airflow flows between the wind wheel 13 and the second section 113b and flows to the air outlet gap 110c. The smaller the ratio of L2 to L1, the easier it is for the airflow to flow into the air outlet channel 110a through the air outlet gap 110c, which can increase the air output. The larger the ratio of L2 to L1, the longer the partition 12 is, and the farther the volute tongue 121 is from the outlet of the air outlet channel 110a. The partition 12 can block more of the wind wheel 13 and reduce the noise generated by the airflow hitting the volute tongue 121. Therefore, by limiting the ratio of L2 to L1 to between 0.4 and 0.7, it is possible to achieve a balance between the fluidity of the airflow and the safety of use, while also having a noise reduction effect.

[0063] According to some embodiments of the present invention, the width of the shell 11 is L3 and satisfies: 0.3≤L1 / L3≤0.5. The width of the shell 11 is approximately equal to the width of the entire fresh air assembly 1. When the width of the shell 11 is constant, the smaller the ratio of L1 to L3, the smaller the air outlet gap 110c, the more the partition 12 blocks the wind wheel 13, and the farther the volute tongue 121 is from the outlet of the air outlet channel 110a, reducing the noise generated by the airflow hitting the volute tongue 121. L1 is less than or equal to half of L3, that is, the minimum width of the air outlet gap 110c is less than half of the width of the shell 11, and the partition 12 occupies more space in the width of the cavity 110 to achieve effective shielding of the wind wheel 13 by the partition 12. The ratio of L1 to L3 is greater than or equal to 0.3, which can make the airflow in the worm wheel cavity 110b flow smoothly into the air outlet channel 110a to achieve stable air outlet.

[0064] According to some embodiments of the present invention, the radius of the wind wheel 13 is R1 and satisfies: 0.8≤L1 / R1≤0.9. In order to allow the airflow generated by the wind wheel 13 to rotate and flow in the worm wheel cavity 110b, the wind wheel 13 should occupy most of the space of the worm wheel cavity 110b to reduce the rotating flow space of the airflow in the worm wheel cavity 110b, so that the airflow flows along the extension direction of the side plate 113, resulting in the diameter 2R of the wind wheel 13 plus the minimum distance L2 between the wind wheel 13 and the second section 113b being slightly smaller than the width L3 of the housing 11, and because the partition 12 and the air outlet gap 110c jointly occupy the space in the width of the cavity 110, the air outlet gap 110c is The ratio of the minimum width of 110c to the radius of the wind wheel 13 is between 0.8 and 0.9. On the one hand, the airflow in the worm wheel cavity 110b can flow smoothly through the air outlet gap 110c into the air outlet channel 110a. On the other hand, the partition 12 occupies more space in the width of the cavity 110 than the air outlet gap 110c. Therefore, the partition 12 can effectively shield the wind wheel 13, which is highly safe to use. In addition, the worm tongue 121 is away from the outlet of the air outlet channel 110a, thereby reducing the noise generated by the airflow hitting the worm tongue 121.

[0065] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the fresh air assembly 1 further includes a splitter plate 14, which is arranged in the air outlet channel 110a and extends from the air outlet gap 110c to the outlet of the air outlet channel 110a. At least a portion of the splitter plate 14 is configured to be an arc convex toward and away from the wind wheel 13. The airflow flowing into the air outlet channel 110a through the air outlet gap 110c will change the flow direction to flow out of the air outlet channel 110a through the outlet of the air outlet channel 110a. By arranging the splitter plate 14 in the air outlet channel 110a, a part of the airflow will hit the upper shell 114 to change the flow direction, and another part of the airflow will hit the splitter plate 14. The splitter plate 14 is configured to extend from the air outlet gap 110c to the outlet of the air outlet channel 110a so that the airflow can flow along the splitter plate 14 to change the flow direction, thereby realizing the stratification of the airflow. A layer of airflow flows between the splitter plate 14 and the partition plate 12, and another layer of airflow flows between the splitter plate 14 and the upper shell 114, thereby realizing uniform airflow. By configuring at least a portion of the splitter plate 14 to be an arc convex toward and away from the wind wheel 13 , the extension direction of the splitter plate 14 is changed. The arc helps the splitter plate 14 to guide the flow direction of the airflow.

[0066] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the splitter plates 14 are configured as a plurality of splitter plates 14 spaced apart from each other. By configuring the splitter plates 14 as a plurality of splitter plates 14 spaced apart from each other, the airflow can flow between two adjacent splitter plates 14 to form a layer of airflow, and the plurality of splitter plates 14 further divide the number of layers of the airflow to form a multi-layer airflow, further making the airflow uniform.

[0067] In the description of the present invention, "plurality" means two or more.

[0068] According to some embodiments of the present invention, Figure 1 , Figure 4 and Figure 5 As shown, the fresh air assembly 1 also includes a noise reduction shell 15a and a noise reduction member 15b. The noise reduction shell 15a is arranged on at least one side of the upper shell 114 and forms a noise reduction cavity with the upper shell 114; the noise reduction member 15b is arranged in the noise reduction cavity. The noise reduction shell 15a can be one and arranged on one side of the upper shell 114, or there can be two noise reduction shells 15a and respectively arranged on both sides of the upper shell 114. A noise reduction cavity is defined between the noise reduction shell 15a and the upper shell 114, and the airflow can generate and carry sound waves. The sound waves propagating in the air outlet channel 110a can enter the noise reduction cavity. By arranging the noise reduction member 15b in the noise reduction cavity, the noise reduction member 15b can absorb the sound waves and reduce noise. Exemplarily, the noise reduction member 15b is sound-absorbing cotton.

[0069] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the upper shell 114 is formed with a connecting port 114a, and the connecting port 114a is arranged on the inner wall of the air outlet channel 110a and connects the air outlet channel 110a with the noise reduction chamber. By arranging the connecting port 114a on the inner wall of the air outlet channel 110a, the connecting port 114a connects the air outlet channel 110a with the noise reduction chamber, and the airflow in the air outlet channel 110a can enter the noise reduction chamber through the connecting port 114a along with the sound waves, which can increase the sound waves entering the noise reduction chamber and acting on the noise reduction component 15b, and the noise reduction component 15b can absorb noise more effectively and improve the noise reduction effect. In addition, the airflow flowing into the noise reduction chamber can also return to the air outlet channel 110a through the connecting port 114a, and then flow out of the air outlet channel 110a from the outlet of the air outlet channel 110a, so that the fresh air component 1 can stably discharge air.

[0070] According to some embodiments of the present invention, Figure 2 As shown, the communication openings 114a are configured as a plurality of communication openings 114a arranged at intervals on the inner wall of the air outlet channel 110a, and each communication opening 114a is arranged opposite to the noise reduction member 15b. By configuring the communication openings 114a as a plurality of communication openings 114a arranged at intervals on the inner wall of the air outlet channel 110a, the airflow can flow into the noise reduction chamber through the plurality of communication openings 114a, thereby increasing the gas flow rate flowing from the air outlet channel 110a into the noise reduction chamber, and each communication opening 114a is arranged opposite to the noise reduction member 15b, so that the airflow can flow directly to the noise reduction member 15b after passing through the communication openings 114a, so that the noise reduction member 15b can play a more effective role and improve the noise reduction effect.

[0071] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the upper shell 114 is formed with a recessed portion 114b which is recessed from the air outlet channel 110a toward the noise reduction chamber, and a plurality of mutually spaced communication ports 114a are formed on the recessed portion 114b. By providing the recessed portion 114b on the upper shell 114, since the recessed portion 114b is recessed from the air outlet channel 110a toward the noise reduction chamber, the space of the air outlet channel 110a at the recessed portion 114b is increased, and the airflow passing through the recessed portion 114b will change its flow direction and flow close to the recessed portion 114b. By providing a plurality of mutually spaced communication ports 114a on the recessed portion 114b, the airflow flowing close to the recessed portion 114b can enter the noise reduction chamber through the communication ports 114a, thereby guiding the airflow into the noise reduction chamber and improving the noise reduction effect.

[0072] According to some embodiments of the present invention, Figure 4 and Figure 6As shown, a mounting groove 115 recessed away from each other is formed on at least one of the first volute 111 and the second volute 112, and at least part of the wind wheel 13 is accommodated in the mounting groove 115. The wind wheel 13 can be installed on the first volute 111 or the second volute 112. By forming the mounting groove 115 recessed away from each other on at least one of the first volute 111 and the second volute 112, the mounting groove 115 can accommodate at least part of the wind wheel 13, facilitate the installation and positioning of the wind wheel 13, and increase the space of the worm wheel cavity 110b at the mounting groove 115, so that the wind wheel 13 with a larger thickness can be arranged in the worm wheel cavity 110b, thereby effectively increasing the air volume. In addition, after the airflow flows into the worm wheel cavity 110b through the mounting groove 115, due to the narrow space between the wind wheel 13 and the side wall of the mounting groove 115, the airflow is difficult to flow back into the mounting groove 115 through the space between the wind wheel 13 and the side wall of the mounting groove 115, which can reduce the backflow of the airflow and improve the air outlet efficiency.

[0073] According to some embodiments of the present invention, Figure 6 As shown, the cross-sectional area of ​​the mounting groove 115 gradually increases in the opening direction toward the mounting groove 115. By configuring the mounting groove 115 so that the cross-sectional area gradually increases in the opening direction toward the mounting groove 115, more space can be provided for the installation of the wind wheel 13, and the side wall of the mounting groove 115 extends in all directions, which can guide the airflow to flow around the wind wheel 13, reduce the energy loss of the airflow generated by the wind wheel 13 when passing through the side wall of the mounting groove 115, so as to achieve smoother airflow in the worm wheel cavity 110b. Exemplarily, the side wall of the mounting groove 115 is configured as an inclined surface or an arc surface, so as to achieve the cross-sectional area of ​​the mounting groove 115 gradually increasing in the opening direction toward the mounting groove 115, and the airflow can flow along the side wall of the mounting groove 115 toward the wind wheel 13.

[0074] According to some embodiments of the present invention, Figure 6 As shown, a vent 115a penetrating in the thickness direction is formed on the bottom wall of the mounting groove 115. By forming the vent 115a on the bottom wall of the mounting groove 115, it is possible to achieve airflow from the axial direction of the wind wheel 13 into the worm gear chamber 110b, the airflow changes into radial flow through the wind wheel 13 to flow to the surrounding side walls of the worm gear chamber 110b, the airflow hits the surrounding side walls of the worm gear chamber 110b and flows along the side walls to rotate and flow in the worm gear chamber 110b, and the airflow flows into the air outlet channel 110a through the air outlet gap 110c, thereby achieving the air outlet of the fresh air component 1.

[0075] According to some embodiments of the present invention, Figure 6As shown, the fresh air assembly 1 further includes a guide 16, which is disposed at the vent 115a and is formed with a plurality of concentrically disposed annular or arc-shaped air guides. By arranging the guide 16 at the vent 115a, the airflow will be accelerated through the annular or arc-shaped air guides when passing through the vent 115a, so as to realize the collection of airflow, guide the airflow to flow evenly into the inlet of the wind wheel 13, reduce the energy loss of the airflow entering the wind wheel 13, and improve the air outlet efficiency.

[0076] According to some embodiments of the present invention, Figure 6 As shown, the edge of the guide member 16 is connected to the vent 115a and is formed with a reinforcing rib 161 protruding toward the worm gear chamber 110b. By providing the reinforcing rib 161 on the edge of the guide member 16, the reinforcing rib 161 protrudes toward the worm gear chamber 110b and is connected to the vent 115a, the structural strength of the edge of the guide member 16 can be enhanced, the product quality of the guide ring can be improved, and the connection between the guide member 16 and the vent 115a is more reliable. In addition, since the reinforcing rib 161 protrudes toward the worm gear chamber 110b, the protruding direction of the reinforcing rib 161 is the same as the flow direction of the airflow when passing through the vent 115a, the airflow can flow into the worm gear chamber 110b along the reinforcing rib 161, and the energy loss of the airflow when passing through the vent 115a can be reduced.

[0077] According to some embodiments of the present invention, Figure 1-Figure 3 and Figure 7 As shown, the housing 11 also includes an air inlet shell 17, on which an air inlet is formed and which is arranged on the first volute 111, and an air inlet channel 171 is defined between the air inlet shell 17 and the first volute 111, and the air inlet channel 171 connects the air inlet with the vent 115a. By providing the air inlet shell 17, the air inlet shell 17 is provided on the first volute 111 and defines the air inlet channel 171 between the air inlet shell 17 and the first volute 111, and the air flow can flow into the air inlet channel 171 through the air inlet on the air inlet shell 17, and the air flow flows in the air inlet channel 171 and can flow into the worm wheel chamber 110b through the vent 115a, so that the outside air flows into the worm wheel chamber 110b from the air inlet channel 171, and the air inlet shell 17 can isolate the noise generated by the rotation of the wind wheel 13, thereby reducing the noise. In particular, a valve assembly that can selectively close the air inlet channel 171 can be provided on the air inlet shell 17, so as to selectively connect the outside with the worm wheel chamber 110b.

[0078] In some embodiments of the present application, the valve assembly includes a driving member and a valve member, the valve member is disposed in the air inlet channel 171 and connected to the driving member, and the driving member is adapted to selectively drive the valve member to open or close the air inlet channel 171. Exemplarily, the driving member is a stepping motor.

[0079] According to some embodiments of the present invention, Figure 7As shown, the air inlet shell 17 is formed with a first flow path surface 17a, the first volute 111 is formed with a second flow path surface 111a, and a vent 115a is formed on the second flow path surface 111a; the first flow path surface 17a and the second flow path surface 111a are spaced apart in the through direction of the vent 115a to define an air inlet channel 171; wherein the first flow path surface 17a gradually approaches the second flow path surface 111a and tilts in the direction from the air inlet to the vent 115a. The airflow flowing into the air inlet channel 171 through the air inlet will flow along the first flow channel surface 17a and the second flow channel surface 111a. Since the vent 115a is formed on the second flow channel surface 111a and the first flow channel surface 17a and the second flow channel surface 111a are spaced apart in the through direction of the vent 115a, the airflow flowing along the first flow channel surface 17a will change its direction and flow toward the second flow channel surface 111a to enter the vent 115a. By constructing the first flow channel surface 17a to gradually tilt closer to the second flow channel surface 111a in the direction from the air inlet to the vent 115a, the first flow channel surface 17a can guide the direction of the airflow, and the airflow flowing along the first flow channel surface 17a flows in the direction close to the second flow channel surface 111a, thereby effectively improving the air intake efficiency. At the same time, the space of the air inlet channel 171 at the position of the vent 115a can be reduced, and the airflow that rotates and refluxes can be reduced, so that the airflow can flow stably in the air inlet channel 171 and the noise can be reduced. And because the flow space becomes smaller in the direction of airflow flow, the airflow can be accelerated and the air intake efficiency can be improved.

[0080] According to some embodiments of the present invention, the first flow channel surface 17a and the second flow channel surface 111a are respectively constructed as planes, and the angle between the first flow channel surface 17a and the second flow channel surface 111a is α and satisfies: 0°<α≤70°. By constructing the first flow channel surface 17a and the second flow channel surface 111a as planes, the airflow can flow more stably along the first flow channel surface 17a or the second flow channel surface 111a, and the airflow velocity distribution is more uniform. Since the first flow channel surface 17a is inclined close to the second flow channel surface 111a, the angle α between the first flow channel surface 17a and the second flow channel surface 111a is greater than 0°. The angle α between the first flow channel surface 17a and the second flow channel surface 111a will also affect the size of the space of the air inlet channel 171. The size of α is limited to 70°, which limits the size of the space of the air inlet channel 171 to limit the flow space of the airflow, so that the airflow flows stably in the air inlet channel 171, which is conducive to maintaining the uniform velocity distribution of the airflow in the air inlet channel 171 and reducing noise. In addition, the increase in the size of α will cause the space of the air inlet channel 171 near the vent 115a to become larger, which will increase the airflow of the rotating backflow and generate noise, so the size of α needs to be limited. The size of α will affect the air volume of the fresh air component 1. When the size of α gradually increases from 0°, the air volume is first positively correlated with the size of α, and then negatively correlated. The air volume peaks between 20° and 30°. Preferably, 15°<α≤40°, for example, α=30°.

[0081] According to some embodiments of the present invention, Figure 1 , Figure 3 and Figure 8 As shown, the fresh air assembly 1 further includes a filter 18, at least part of which is disposed in the air inlet channel 171, and the filter 18 is suitable for filtering the airflow in the air inlet channel 171. By disposing the filter 18, the filter 18 can filter the airflow flowing in the air inlet channel 171, and the air enters the worm wheel chamber 110b through the vent 115a after being purified, so that the fresh air assembly 1 can output clean air and purify the air.

[0082] According to some embodiments of the present invention, Figure 8As shown, the filter element 18 includes a filter bracket 181 and a filter screen 182. The filter bracket 181 is received in the air inlet channel 171 and is arranged between the first volute 111 and the air inlet housing 17. The filter screen 182 is arranged on the filter bracket 181 and is located between the first flow channel surface 17a and the second flow channel surface 111a. The filter screen 182 is suitable for filtering the airflow entering the vent 115a. By arranging the filter screen 182 between the first flow channel surface 17a and the second flow channel surface 111a, since the vent 115a is arranged on the second flow channel surface 111a, the filter screen 182 can purify the airflow flowing toward the vent 115a, thereby achieving purification of the airflow. By setting up a filter bracket 181, the filter bracket 181 supports the filter 182 to achieve the fixation of the filter 182 in the air inlet channel 171. The filter bracket 181 can be respectively matched with the air inlet shell 17 and the first volute 111 to be set between the air inlet shell 17 and the first volute 111, so as to facilitate the setting of the filter 182.

[0083] In some embodiments of the present application, the filter bracket 181 includes an outer frame, a transverse bracket and a longitudinal bracket, the outer frame is arranged between the first volute 111 and the second volute 112 and the outer frame is formed with a square opening that penetrates in the thickness direction; the transverse bracket is connected to the longitudinal bracket and arranged in the square opening and the extension direction of the transverse bracket is orthogonal to the extension direction of the longitudinal bracket, and a plurality of sub-square openings that penetrate in the thickness direction are defined between the outer frame, the transverse bracket and the longitudinal bracket, and the filter screen 182 is arranged on the crossbeam bracket and the longitudinal bracket and covers a plurality of sub-square openings. By arranging the transverse bracket and the longitudinal bracket, the transverse bracket and the longitudinal bracket are connected and the square opening is divided into a plurality of sub-square openings, thereby enhancing the structural strength of the filter bracket 181. The transverse bracket and the longitudinal bracket jointly support the filter screen 182 to achieve a firm fixation of the filter screen 182. The airflow flows to the vent 115a through the sub-square opening, and the filter screen 182 covers a plurality of sub-square openings to achieve comprehensive filtration of the airflow and improve the air purification effect. In particular, the width of the square opening is equal to the width of the vent 115a, so that the airflow flowing to the vent 115a through the sub-square opening can pass through the vent 115a, making the airflow flow smoothly.

[0084] According to some embodiments of the present invention, the minimum distance between the first flow channel surface 17a and the filter screen 182 is S1 and satisfies: 0mm<S1≤70mm, and the maximum distance between the first flow channel surface 17a and the filter screen 182 is S2 and satisfies: S1<S2≤150mm. Since the first flow channel surface 17a gradually approaches the second flow channel surface 111a in the direction from the air inlet to the vent 115a, the minimum distance S1 between the first flow channel surface 17a and the filter screen 182 is the distance between the end of the first flow channel surface 17a close to the vent 115a and the filter screen 182, and the maximum distance S2 between the first flow channel surface 17a and the filter screen 182 is the distance between the end of the first flow channel surface 17a close to the air inlet and the filter screen 182, so S2 is greater than S1. The size of S1 is limited to 70mm to limit the size of the space of the air inlet channel 171 near the vent 115a. Since the airflow changes its direction near the vent 115a and flows from the first flow channel surface 17a to the second flow channel surface 111a, the airflow that rotates and refluxes can be reduced by reducing the space, so that the airflow can flow more stably from the air inlet channel 171 into the worm wheel chamber 110b, thereby improving the air intake efficiency and reducing noise. The size of S2 is limited to 150mm to limit the size of the space of the air inlet channel 171 near the air inlet, so that the velocity distribution of the airflow in the air inlet channel 171 is uniform and noise is reduced. Preferably, 0mm<S1≤20mm, 30mm<S2≤60mm, for example, S1=10mm, S2=45mm.

[0085] In summary, the fresh air component 1 according to the present invention includes a shell 11, a partition 12 and a wind wheel 13; wherein the partition 12 divides the cavity 110 formed in the shell 11 into an air outlet channel 110a and a worm wheel cavity 110b, and the wind wheel 13 is arranged in the worm wheel cavity 110b, and the air outlet channel 110a is connected with the worm wheel cavity 110b through an air outlet gap 110c formed by the partition 12 and the inner wall of the cavity 110. The rotation of the wind wheel 13 can generate an airflow from the worm wheel cavity 110b to the air outlet channel 110a, and the airflow enters the air outlet channel 110a through the air outlet gap 110c, and flows out of the cavity 110 after flowing in the air outlet channel 110a. The formation of the air outlet channel 110a prolongs the time and distance of the airflow from generation to flow out of the cavity 110, and the airflow becomes stable during the flow, which can reduce the airflow noise, and the partition 12 can isolate the noise generated by the rotation of the wind wheel 13 in the worm wheel cavity 110b, and the noise is not easy to be transmitted. The wind wheel 13 is hidden deep in the worm wheel cavity 110b, and it is difficult for a human hand to pass through the air outlet channel 110a to touch the wind wheel 13, thereby improving the safety of use. By providing a worm tongue 121 protruding toward the air outlet gap 110c at the other end of the partition 12, the worm tongue 121 can guide the air flow, reduce the gas circulating in the worm wheel cavity 110b, increase the air volume, and reduce noise. The housing 11 includes a first volute 111, a second volute 112, a side plate 113 and an upper housing 114. A worm wheel chamber 110b is defined between the first volute 111, the second volute 112 and the side plate 113. By configuring the first section 113a of the side plate 113 to be arc-shaped, the first section 113a can guide the airflow to rotate and flow in the worm wheel chamber 110b, and the second section 113b of the side plate 113 can guide the airflow to flow to the air outlet gap 110c, so that the airflow generated by the wind wheel 13 in the worm wheel chamber 110b flows smoothly into the air outlet channel 110a, and stable air outlet is achieved. By arranging a plurality of splitter plates 14 arranged at intervals in the air outlet channel 110a, the airflow in the air outlet channel 110a is layered to achieve uniform air outlet. By respectively arranging noise reduction shells 15a on both sides of the upper shell 114, two noise reduction chambers are defined between the two noise reduction shells 15a and the upper shell 114, and noise reduction components 15b are respectively arranged in the two noise reduction chambers, so that the sound waves propagating in the air outlet channel 110a can enter the noise reduction chamber, and by arranging the noise reduction component 15b in the noise reduction chamber, the noise reduction component 15b can absorb the sound waves and reduce noise. The inner wall of the air outlet channel 110a is formed with a connecting port 114a that connects the air outlet channel 110a with the noise reduction chamber, and the connecting port 114a is configured to be arranged at intervals. The airflow in the air outlet channel 110a can enter the noise reduction chamber through the connecting port 114a along with the sound waves, which can increase the sound waves entering the noise reduction chamber and acting on the noise reduction component 15b, and the noise reduction component 15b can absorb noise more effectively and improve the noise reduction effect.By providing a recessed portion 114b on the upper shell 114 that is recessed from the air outlet channel 110a toward the noise reduction chamber, the space of the air outlet channel 110a at the recessed portion 114b is increased, and the airflow will change its direction after passing through the recessed portion 114b and flow close to the recessed portion 114b; by providing a plurality of mutually spaced connecting ports 114a on the recessed portion 114b, the airflow flowing close to the recessed portion 114b can enter the noise reduction chamber through the connecting ports 114a, thereby guiding the airflow into the noise reduction chamber and improving the noise reduction effect.

[0086] The air conditioner according to the present invention will be briefly described below.

[0087] The air conditioner according to the present invention includes the fresh air component 1 in any one of the above embodiments. Since the air conditioner according to the present invention includes the fresh air component 1 in any one of the above embodiments, in the air conditioner according to the present invention, the wind wheel 13 of the fresh air component 1 is deeply hidden in the worm gear cavity 110b, the noise is not easy to be transmitted, and it is difficult for a person to touch the wind wheel 13 through the air outlet channel 110a, the noise is small, and the safety is good.

[0088] 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 limiting the present invention.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" 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 present invention. In this specification, the schematic representation of the above terms does 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.

[0090] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 component, characterized in that: include: A housing (11), wherein a cavity (110) is formed in the housing (11); a partition (12), the partition (12) being arranged in the cavity and dividing the cavity into an air outlet channel (110a) and a worm wheel chamber (110b), the free end of the partition (12) being arranged at intervals from the inner wall of the cavity (110) to form an air outlet gap (110c) connecting the worm wheel chamber (110b) and the air outlet channel (110a), the air outlet channel (110a) extending to the housing and forming an air outlet; A wind wheel (13), the wind wheel (13) being rotatably disposed in the worm wheel chamber (110b); wherein The wind wheel (13) is hidden in the worm wheel cavity (110b) and cannot be observed through the air outlet.

2. The fresh air assembly according to claim 1, characterized in that: The distance between the free end of the partition plate (12) and the inner wall of the cavity (110) is smaller than the distance between the center of the wind wheel and the inner wall of the cavity (110).

3. The fresh air assembly according to claim 2, characterized in that: The free end of the partition plate (12) is formed with a volute tongue (121) protruding toward the air outlet gap (110c).

4. The fresh air assembly according to claim 3, characterized in that: The housing (11) comprises: a first volute (111) and a second volute (112), wherein the first volute (111) is connected to the second volute (112) and the volute cavity (110b) is defined between the first volute (111) and the second volute (112), and the partition plate (12) is respectively connected to the first volute (111) and the second volute (112); An upper shell (114), wherein the upper shell (114) is disposed on the first volute (111) and the second volute (112) and is connected to the partition (12), and the air outlet channel (110a) is defined between the upper shell (114) and the partition (12).

5. The fresh air assembly according to claim 2, characterized in that: The minimum distance between the volute tongue (121) and the inner wall of the cavity (110) is L1, and the minimum distance between the wind wheel (13) and the inner wall of the cavity (110) is L2, and the following condition is satisfied: 0.4≤L2 / L1≤0.

7.

6. The fresh air assembly according to claim 5, characterized in that: The width of the shell (11) is L3 and satisfies: 0.3≤L1 / L3≤0.

5.

7. The fresh air assembly according to claim 5, characterized in that: The radius of the wind wheel (13) is R1 and satisfies: 0.8≤L1 / R1≤0.

9.

8. The fresh air assembly according to claim 2, characterized in that: Also includes: A splitter plate (14), the splitter plate (14) being arranged in the air outlet channel (110a) and extending from the air outlet gap (110c) to the outlet of the air outlet channel (110a), and at least a portion of the splitter plate (14) being constructed in an arc shape that bulges away from the wind wheel (13).

9. The fresh air assembly according to claim 8, characterized in that: The diverter plates (14) are configured as a plurality of diverter plates that are spaced apart from each other.

10. The fresh air assembly according to claim 4, characterized in that: Also includes: A noise reduction shell (15a), the noise reduction shell (15a) being arranged on at least one side of the upper shell (114) and forming a noise reduction cavity between the noise reduction shell (15a) and the upper shell (114); A noise reduction component (15b), wherein the noise reduction component (15b) is arranged in the noise reduction cavity.

11. The fresh air assembly according to claim 10, characterized in that: The upper shell (114) is formed with a communication port (114a), and the communication port (114a) is arranged on the inner wall of the air outlet channel (110a) and connects the air outlet channel (110a) with the noise reduction chamber.

12. The fresh air assembly according to claim 11, characterized in that: The communication openings (114a) are structured as a plurality of communication openings (114a) arranged at intervals on the inner wall of the air outlet passage (110a), and each communication opening (114a) is arranged directly opposite to the noise reduction component (15b).

13. The fresh air assembly according to claim 10, characterized in that: The upper shell (114) is formed with a recessed portion (114b) recessed from the air outlet channel (110a) toward the noise reduction chamber, and a plurality of mutually spaced communication ports (114a) are formed on the recessed portion (114b).

14. The fresh air assembly according to claim 4, characterized in that: At least one of the first volute (111) and the second volute (112) is formed with a mounting groove (115) that is recessed away from each other, and at least a portion of the wind wheel (13) is accommodated in the mounting groove (115).

15. The fresh air assembly according to claim 14, characterized in that: The cross-sectional area of ​​the installation groove (115) gradually increases in an opening direction toward the installation groove (115).

16. The fresh air assembly according to claim 15, characterized in that: A ventilation hole (115a) penetrating in the thickness direction is formed on the bottom wall of the installation groove (115).

17. The fresh air assembly according to claim 16, characterized in that: Also includes: A flow guide (16), wherein the flow guide (16) is arranged at the ventilation opening (115a) and the flow guide (16) is formed with a plurality of concentrically arranged annular or arc-shaped air guide openings.

18. The fresh air assembly according to claim 17, characterized in that: The edge of the flow guide (16) is connected to the ventilation opening (115a) and is formed with a reinforcing rib (161) protruding toward the worm wheel chamber (110b).

19. The fresh air assembly according to claim 16, characterized in that: The housing (11) further comprises: An air inlet shell (17), wherein an air inlet is formed on the air inlet shell (17) and is arranged on the first volute (111); an air inlet channel (171) is defined between the air inlet shell (17) and the first volute (111); and the air inlet channel (171) connects the air inlet with the vent (115a).

20. The fresh air assembly according to claim 19, characterized in that: The air inlet housing (17) is formed with a first flow channel surface (17a), the first volute (111) is formed with a second flow channel surface (111a), and the second flow channel surface (111a) is formed with the vent (115a); the first flow channel surface (17a) and the second flow channel surface (111a) are arranged at intervals in a through direction of the vent (115a) to define the air inlet channel (171); wherein The first flow channel surface (17a) is inclined gradually approaching the second flow channel surface (111a) in the direction from the air inlet to the ventilation opening (115a).

21. The fresh air assembly according to claim 20, characterized in that: The first flow channel surface (17a) and the second flow channel surface (111a) are respectively constructed as planes, and the angle between the first flow channel surface (17a) and the second flow channel surface (111a) is α and satisfies: 0°<α≤70°.

22. The fresh air assembly according to claim 20, characterized in that: Also includes: A filter element (18), at least a portion of which is disposed in the air inlet channel (171), and the filter element (18) is suitable for filtering the airflow in the air inlet channel (171).

23. The fresh air assembly according to claim 22, characterized in that: The filter element (18) comprises: a filter bracket (181), the filter bracket (181) being received in the air inlet passage (171) and disposed between the first volute (111) and the air inlet casing (17); A filter screen (182), the filter screen (182) being arranged on the filter support (181) and being located between the first flow channel surface (17a) and the second flow channel surface (111a), the filter screen (182) being suitable for filtering the airflow entering the vent (115a).

24. The fresh air assembly according to claim 23, characterized in that: The minimum distance between the first flow channel surface (17a) and the filter screen (182) is S1 and satisfies: 0mm<S1≤70mm, and the maximum distance between the first flow channel surface (17a) and the filter screen (182) is S2 and satisfies: S1<S2≤150mm.

25. An air conditioner, characterized in that: It comprises the fresh air component (1) as described in any one of claims 1 to 24.

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