Fresh air assembly and air conditioner

Abstract

The invention discloses a fresh air assembly and an air conditioner. The fresh air assembly comprises a first shell, a wind wheel and a second shell, and a worm wheel cavity is formed in the first shell; the wind wheel is rotatably arranged in the worm wheel cavity; the second shell is arranged on the first shell, and an air inlet channel is defined between the second shell and the first shell. Wherein a ventilation opening communicated with the worm wheel cavity is formed in the first shell, an air inlet is formed in the second shell, the air inlet is communicated with the ventilation opening through the air inlet channel, and the sectional area of the air inlet channel is gradually reduced in the direction away from the air inlet. According to the fresh air assembly, the sectional area of the air inlet channel is gradually reduced in the direction far away from the air inlet, so that air which rotates and flows back can be reduced, the air volume loss is reduced, and the air outlet efficiency is 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] An air intake cavity is provided in the fresh air module, and the air intake cavity can guide the airflow to the fan. The gas in the existing air intake cavity will produce a rotating reflux, and the gas flow is unstable, resulting in a large air volume loss and low air outlet efficiency. 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, by constructing the air inlet channel so that the cross-sectional area gradually decreases in the direction away from the air inlet, the gas that undergoes rotational reflux can be reduced, the air volume loss can be reduced, and the air outlet efficiency can be improved.

[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 first shell, a worm gear cavity is formed in the first shell; a wind wheel, the wind wheel is rotatably arranged in the worm gear cavity; a second shell, the second shell is arranged on the first shell and defines an air inlet channel between the first shell; wherein the first shell forms a vent connected to the worm gear cavity, the second shell forms an air inlet, the air inlet channel connects the air inlet with the vent, and the cross-sectional area of ​​the air inlet channel gradually decreases in the direction away from the air inlet.

[0007] According to the fresh air assembly of the present invention, the wind wheel is arranged in the worm wheel cavity of the first shell, and the rotation of the wind wheel can generate airflow. By setting a second shell, the second shell is arranged on the first shell to realize the fixation of the second shell, and an air inlet channel is defined between the second shell and the first shell, and the airflow can flow into the air inlet channel through the air inlet, and the air inlet channel can guide the airflow to the wind wheel through the vent. By constructing the air inlet channel to gradually reduce the cross-sectional area in the direction away from the air inlet, the flow space of the airflow is reduced to guide the airflow flowing in the air inlet channel to gradually flow close to the vent, so that the airflow can flow to the wind wheel through the vent more smoothly, reduce the gas that rotates and refluxes, reduce the air volume loss, and improve the air outlet efficiency.

[0008] According to some embodiments of the present invention, the second shell is formed with a first flow channel surface, and the first flow channel surface is inclined and arranged close to the vent.

[0009] According to some embodiments of the present invention, the first shell is formed with a second flow channel surface, and the vent is formed on the second flow channel surface; the first flow channel surface and the second flow channel surface are spaced apart in the through direction of the vent to define the air inlet channel; wherein the first flow channel surface is inclined gradually approaching the second flow channel surface in the direction from the air inlet to the vent.

[0010] 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°.

[0011] 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.

[0012] According to some embodiments of the present invention, the difference between the height of the filter element and the diameter of the ventilation opening is no more than 15 mm.

[0013] 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 shell and the second shell; 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.

[0014] 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.

[0015] According to some embodiments of the present invention, the first housing includes: a first volute and a second volute, the first volute is connected to the second volute and the worm gear chamber is defined between the first volute and the second volute.

[0016] According to some embodiments of the present invention, the first volute is formed with the ventilation opening penetrating in the thickness direction, and the wind wheel is mounted on the first volute.

[0017] According to some embodiments of the present invention, at least a portion of the side plate is configured to be arc-shaped and surrounds at least a portion of the outer circumference of the wind wheel.

[0018] The air conditioner according to the present invention will be briefly described below.

[0019] 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 less rotating backflow in the air inlet channel, stable air flow, high air outlet efficiency and low noise.

[0020] 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

[0021] 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:

[0022] Figure 1 is a front schematic diagram of a fresh air assembly according to an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 Schematic diagram of the middle AA section;

[0024] Figure 3 yes Figure 1 Schematic diagram of the middle BB section;

[0025] Figure 4 is a side schematic diagram of a fresh air assembly according to an embodiment of the present invention;

[0026] Figure 5 yes Figure 4 Schematic diagram of the CC section;

[0027] Figure 6 yes Figure 1 AA section diagram (excluding the wind wheel);

[0028] Figure 7 yes Figure 4 Schematic diagram of the middle DD section;

[0029] Figure 8 yes Figure 1 Schematic diagram of the cross section in the opposite direction of BB.

[0030] Reference numerals:

[0031] Fresh air component 1;

[0032] First housing 11, cavity 110, air outlet passage 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 housing 114, communication port 114a, recessed portion 114b, mounting groove 115, vent 115a;

[0033] Partition plate 12, volute tongue 121;

[0034] Wind wheel 13;

[0035] Divider plate 14;

[0036] Noise reduction shell 15a, noise reduction member 15b;

[0037] Flow guide 16, reinforcing rib 161;

[0038] The second housing 17, the air inlet passage 171, the first flow channel surface 17a;

[0039] Filter element 18 , filter support 181 , filter screen 182 . DETAILED DESCRIPTION

[0040] 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.

[0041] In the related art, an air intake cavity is provided in the fresh air module, and the air intake cavity can guide the airflow to the fan. The gas in the existing air intake cavity will produce a rotating reflux, and the gas flow is unstable, resulting in a large air volume loss and low air outlet efficiency.

[0042] Reference below Figure 1-Figure 8 A fresh air assembly 1 according to an embodiment of the present invention is described.

[0043] like Figure 4 , Figure 6 and Figure 7 As shown, the fresh air component according to the present invention includes a first shell 11, a wind wheel 13 and a second shell 17, a worm wheel cavity 110b is formed in the first shell 11; the wind wheel 13 is rotatably arranged in the worm wheel cavity 110b; the second shell 17 is arranged on the first shell 11 and defines an air inlet channel 171 between the first shell 11; wherein, the first shell 11 forms a vent 115a connected to the worm wheel cavity 110b, the second shell 17 forms an air inlet, the air inlet channel 171 connects the air inlet with the vent 115a, and the cross-sectional area of ​​the air inlet channel 171 gradually decreases in the direction away from the air inlet.

[0044] In the fresh air assembly 1 of the present application, the wind wheel 13 is arranged in the worm wheel cavity 110b of the first housing 11, and the wind wheel 13 can generate airflow by rotating. By setting the second housing 17, the second housing 17 is arranged on the first housing 11 to realize the fixation of the second housing 17, and an air inlet channel 171 is defined between the second housing 17 and the first housing 11, and the airflow can flow into the air inlet channel 171 through the air inlet, and the air inlet channel 171 can guide the airflow to the wind wheel 13 through the vent 115a. By constructing the air inlet channel 171 to gradually reduce the cross-sectional area in the direction away from the air inlet, the flow space of the airflow is reduced, so as to guide the airflow flowing in the air inlet channel 171 to gradually approach the vent 115a, so that the airflow can flow to the wind wheel through the vent 115a more smoothly, reduce the gas that rotates and refluxes, reduce the air volume loss, and improve the air outlet efficiency.

[0045] Therefore, the fresh air component 1 of the present application can reduce the gas rotating backflow, reduce the air volume loss, and improve the air outlet efficiency by constructing the air inlet channel 171 to gradually reduce the cross-sectional area in the direction away from the air inlet.

[0046] According to some embodiments of the present invention, Figure 7 As shown, the second shell 17 is formed with a first flow channel surface 17a and the first flow channel surface 17a gradually approaches the vent 115a in the direction from the air inlet to the vent 115a. The first flow channel surface 17a is a surface of the second shell 17 that is separated from the first shell 11 to form an air inlet channel 171. The airflow can flow along the first flow channel surface 17a in the air inlet channel 171. By constructing the first flow channel surface 17a to gradually approach the vent 115a in the direction from the air inlet to the vent 115a, the airflow flowing along the first flow channel surface 17a will gradually flow close to the vent 115a, so that the airflow can flow to the wind wheel through the vent 115a more smoothly, reduce the gas that rotates and flows back, reduce the air volume loss, and improve the air outlet efficiency.

[0047] According to some embodiments of the present invention, Figure 7As shown, 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.

[0048] 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, 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°.

[0049] 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.

[0050] According to some embodiments of the present invention, the difference between the height of the filter element 18 and the diameter of the vent 151a is not greater than 15 mm. The height of the filter element 18 may be less than the diameter of the vent 151a, or the height of the filter element 18 may be greater than the diameter of the vent 151a. By configuring the filter element 18 and the vent 151a so that the difference between the height of the filter element 18 and the diameter of the vent 151a is not greater than 15 mm, on the one hand, the filter element 18 can cover a large area of ​​the vent 151a, thereby ensuring the filtering effect of the filter element 18, and on the other hand, the size of the filter element 18 is reasonable, which can facilitate the installation and arrangement of the filter element 18.

[0051] According to some embodiments of the present invention, Figure 8 As 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 second volute 112. 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 purifying the airflow. By setting 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 second shell 17 and the first volute 111 to be set between the second shell 17 and the first volute 111, so as to facilitate the setting of the filter 182.

[0052] 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.

[0053] 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.

[0054] According to some embodiments of the present invention, Figure 1 and Figure 2As shown, the fresh air assembly 1 includes a first housing 11, a partition 12 and a wind wheel 13. A cavity 110 is formed in the first housing 11. One end of the partition 12 is connected to the first housing 11 and extends toward the inside of the cavity 110 to separate the cavity 110 into an air outlet channel 110a and a worm wheel cavity 110b. The other 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. The wind wheel 13 is rotatably disposed in the worm wheel cavity 110b. 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 an air outlet channel 110a and a worm wheel chamber 110b. The wind wheel 13 is set in the worm wheel chamber 110b. The rotation of the wind wheel 13 can generate an airflow from the worm wheel chamber 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 from the generation of the airflow to the flow out of the cavity 110. The airflow becomes stable during the flow, 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 chamber 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 first 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. It is also difficult for a human hand to pass through the air outlet channel 110a and touch the wind wheel 13, thereby improving the safety of use. In addition, the provision of protective ribs in the relevant technology can be eliminated, thereby reducing wind resistance and increasing air output.

[0055] According to some embodiments of the present invention, Figure 2 As shown, the other end of the partition 12 is formed with a volute tongue 121 protruding toward the air outlet gap 110c. By setting 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. After rotating one circle with the wind wheel 13 in the volute cavity 110b, it returns to the volute tongue 121 to participate in new diversion, 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.

[0056] According to some embodiments of the present invention, Figure 1 , Figure 2 and Figure 3 As 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.

[0057] 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.

[0058] According to some embodiments of the present invention, the minimum distance between the volute tongue 121 and the second section 113b is L1, and the minimum distance between the wind wheel 13 and the second section 113b is L2 and satisfies: 0.4≤L2 / L1≤0.7. 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.

[0059] According to some embodiments of the present invention, the width of the first shell 11 is L3 and satisfies: 0.3≤L1 / L3≤0.5. The width of the first shell 11 is approximately equal to the width of the entire fresh air assembly 1. When the width of the first 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, the farther the volute tongue 121 is from the outlet of the air outlet channel 110a, and the noise generated by the airflow hitting the volute tongue 121 is reduced. 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 first 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.

[0060] 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 first 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 smaller than the width L3 of the first housing 11. The ratio of the minimum width of the gap 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 smoothly pass through the air outlet gap 110c and flow 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 far away from the outlet of the air outlet channel 110a, thereby reducing the noise generated by the airflow hitting the worm tongue 121.

[0061] 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.

[0062] 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.

[0063] In the description of the present invention, "plurality" means two or more.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] In summary, the fresh air assembly 1 according to the present invention comprises a first housing 11, a partition 12 and a wind wheel 13; wherein the partition 12 separates the cavity 110 formed in the first housing 11 into an air outlet channel 110a and a worm wheel cavity 110b, the wind wheel 13 is arranged in the worm wheel cavity 110b, the air outlet channel 110a is connected with the worm wheel cavity 110b through the air outlet gap 110c formed by the partition 12 and the inner wall of the cavity 110, and the rotation of the wind wheel 13 can generate air from the worm wheel cavity 110a. 0b flows to the air outlet channel 110a, 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 from the generation of the airflow to the flow out of the cavity 110. The airflow becomes stable during the flow process, 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 deeply hidden in the worm wheel cavity 110b, and it is difficult for a human hand to touch the wind wheel 13 through the air outlet channel 110a, thereby improving the safety of use. By setting 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 airflow, reduce the gas circulating in the worm wheel cavity 110b, increase the air volume, and reduce the noise at the same time. The first 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.

[0074] The air conditioner according to the present invention will be briefly described below.

[0075] The air conditioner according to the present invention includes the fresh air component 1 in any one of the above-mentioned embodiments. Since the air conditioner according to the present invention includes the fresh air component 1 in any one of the above-mentioned embodiments, the air conditioner according to the present invention has less rotating reflux airflow in the air inlet channel 171, the air flow is stable, the air outlet efficiency is high, and the noise is low.

[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 limiting the present invention.

[0077] 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.

[0078] 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 first housing (11), wherein a worm gear chamber (110b) is formed in the first housing (11); A wind wheel (13), the wind wheel (13) being rotatably disposed in the worm wheel chamber (110b); a second shell (17), the second shell (17) being arranged on the first shell (11) and defining an air inlet passage (171) between the second shell (17) and the first shell (11); The first shell (11) forms a ventilation port (115a) connected to the worm gear chamber (110b), the second shell (17) forms an air inlet, the air inlet channel (171) connects the air inlet with the ventilation port (115a), and the cross-sectional area of ​​the air inlet channel (171) gradually decreases in a direction away from the air inlet.

2. The fresh air assembly according to claim 1, characterized in that: The second shell (17) is formed with a first flow channel surface (17a), and the first flow channel surface (17a) is arranged obliquely close to the ventilation opening (115a).

3. The fresh air assembly according to claim 2, characterized in that: The first shell (11) 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 arranged to be inclined close to the second flow channel surface (111a).

4. The fresh air assembly according to claim 3, characterized in that: Furthermore, the included angle between the first flow channel surface (17a) and the second flow channel surface (111a) is α and satisfies: 0°<α≤70°.

5. The fresh air assembly according to claim 3, 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).

6. The fresh air assembly according to claim 5, characterized in that: The difference between the height of the filter element and the diameter of the ventilation opening is no more than 15 mm.

7. The fresh air assembly according to claim 6, 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 shell (11) and the second shell (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).

8. The fresh air assembly according to claim 7, 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.

9. The fresh air assembly according to claim 1, characterized in that: The first housing (11) comprises: A first volute (111) and a second volute (112), wherein the first volute (111) and the second volute (112) are spaced apart in a width direction and define a worm wheel chamber between the first volute and the second volute.

10. The fresh air assembly according to claim 9, characterized in that: The first volute (111) is formed with the ventilation opening (115a) penetrating in the thickness direction, and the wind wheel (13) is installed on the first volute (111) and covers the ventilation opening (115a).

11. An air conditioner, characterized in that: It comprises the fresh air component (1) as described in any one of claims 1 to 10.

Images