Air inlet pipe, fresh air assembly and air conditioner

Abstract

The utility model discloses an air inlet pipe, a fresh air assembly and an air conditioner, and relates to the technical field of air conditioners, the air inlet pipe is used for leading outdoor air into the fresh air assembly of the air conditioner, the air inlet pipe comprises a pipe body, and the two ends of the pipe body are provided with an air inlet and an air outlet respectively; the pipe body extends from the air inlet to the air outlet to form an air inlet channel; the peripheral wall of the pipe body is provided with a belly part and a back part, the downstream inner wall of the belly part arches towards the back part, and the downstream inner wall of the back part is arranged in a concave arc surface mode. The technical scheme provided by the utility model is used for reducing noise.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field especially relates to a kind of air intake pipe, fresh air component and air conditioner. BACKGROUND

[0002] Air intake component is an important component of air conditioner, and it is used to introduce external fresh air for air conditioner, to improve indoor air quality. In order to provide sufficient fresh air volume on the market, the speed of fan is usually improved, but with the improvement of fan speed, the noise generated by air intake component will increase.

[0003] Therefore, how to improve the structure of air intake pipe to avoid the problem of noise deterioration has important significance. INVENTION CONTENTS

[0004] The utility model provides a kind of air intake pipe, the purpose is to improve the structure of air intake pipe, to reduce noise.

[0005] To achieve the above object, the utility model provides an air intake pipe, for introducing the wind of outdoor into the fresh air component of air conditioner;Including:

[0006] Pipe body, the two ends of the pipe body have air inlet and air outlet respectively;

[0007] Wherein, the pipe body extends from the air inlet to the air outlet to form air intake passage;The outer peripheral wall of the pipe body has abdomen and back, the downstream inner wall of the abdomen is arched towards the direction of the back, and the downstream inner wall of the back is provided as concave arc surface.

[0008] In an embodiment, the plane where the air outlet is located intersects with the outer wall of the abdomen.

[0009] In an embodiment, the size of the pipe body from abdomen to back direction is the thickness of the pipe body, and the thickness of the pipe body increases after decreasing in the direction of extending to the air outlet.

[0010] In an embodiment, the size of the pipe body from abdomen to back direction is the thickness of the pipe body, and the pipe body has width perpendicular to the thickness direction of the pipe body, and the width of the pipe body increases after decreasing in the direction of extending to the air outlet.

[0011] In an embodiment, the diameter of the air outlet is greater than the diameter of the air inlet.

[0012] In an embodiment, the maximum width of the air intake pipe is greater than the diameter of the air outlet.

[0013] In an embodiment, the cross-sectional area of the air intake passage increases in the direction of extending to the air outlet.

[0014] In an embodiment, the air inlet direction of the air inlet and the air outlet direction of the air outlet are arranged at an angle; and / or, the angle between the air inlet direction and the air outlet direction is in the range of 50°-130°.

[0015] In an embodiment, the inner wall of the pipe body is a smooth curved surface.

[0016] In an embodiment, the air inlet pipe further comprises a connecting section arranged at one end of the air inlet, the connecting section being used for connecting to the outside.

[0017] In an embodiment, the radius of the air inlet is in the range of 20mm-30mm;

[0018] and / or, the radius of the air outlet is in the range of 35mm-47mm;

[0019] and / or, the width of the air inlet pipe at the widest position is in the range of 80mm-100mm.

[0020] The utility model also proposes an air inlet pipe for introducing outdoor wind into a fresh air component of an air conditioner; comprising:

[0021] a pipe body, the pipe body having an air inlet and an air outlet at two ends respectively;

[0022] wherein, the pipe body extends from the air inlet to the air outlet to form an air inlet channel; the outer peripheral wall of the pipe body has an abdomen and a back, the downstream inner wall of the abdomen arches towards the direction of the back, the downstream inner wall of the back is arranged as a concave arc surface; the diameter of the air inlet is smaller than the diameter of the air outlet; the dimension of the pipe body from the abdomen to the back is the thickness of the pipe body, the pipe body has a width perpendicular to the thickness direction of the pipe body, the width of the pipe body first increases and then decreases in the direction of extending to the air outlet; the maximum width of the pipe body is greater than the diameter of the air outlet:

[0023] The utility model also proposes a fresh air component comprising the above air inlet pipe.

[0024] In an embodiment, the fresh air component further comprises a cavity and a fan assembly, the cavity being connected to the air inlet pipe, and the fan assembly being arranged in the cavity.

[0025] In an embodiment, the cavity and the air inlet pipe are integrally connected.

[0026] The utility model also proposes an air conditioner comprising the above fresh air component.

[0027] The technical scheme of the utility model discloses an air inlet pipe, which is arched from the abdomen to the back, and the inner wall of the back is concave to form a cavity structure with wind direction, so as to reduce the resistance of airflow and the noise. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative labor.

[0029] Figure 1 The structure schematic diagram of one view of the air inlet pipe one embodiment provided by the utility model is provided.

[0030] Figure 2 The structure schematic diagram of another view of the air inlet pipe one embodiment provided by the utility model is provided.

[0031] Figure 3 The cross section structure schematic diagram of the air inlet pipe one embodiment provided by the utility model is provided.

[0032] Figure 4 The structure schematic diagram of one view of the air inlet pipe another embodiment provided by the utility model is provided.

[0033] Figure 5 The structure schematic diagram of another view of the air inlet pipe another embodiment provided by the utility model is provided.

[0034] Figure 6 The structure schematic diagram of another view of the air inlet pipe another embodiment provided by the utility model is provided.

[0035] Figure 7 The structure schematic diagram of another view of the air inlet pipe another embodiment provided by the utility model is provided.

[0036] Figure 8 The explosion structure schematic diagram of one embodiment of the fresh air assembly provided by the utility model is provided.

[0037] EXPLANATION OF DRAWINGS:

[0038] 100, fresh air assembly; 1, air inlet pipe; 11, pipe body; 111, air inlet; 112, air outlet; 113, peripheral wall; 113a, abdomen; 113b, back; 1131, convex part; 1132, concave part; 12, connecting section; 2, cavity; 3, fan assembly; 31, filter screen; 32, upper volute; 33, lower volute; 34, impeller. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0040] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0042] The air inlet assembly is an important component of an air conditioner, which is used to introduce external fresh air into the air conditioner to improve indoor air quality. In order to provide sufficient fresh air volume on the market, the speed of the fan is usually increased, but as the speed of the fan increases, the noise generated by the air inlet assembly will increase.

[0043] Therefore, the structure of the air inlet pipe is improved in the present application to reduce noise.

[0044] Please refer to Figure 1 , Figure 2 andFigure 3 As shown, an embodiment of the present application provides an air inlet pipe 1, which is used to introduce outdoor fresh air into a fresh air assembly 100 of an air conditioner, and then into a room, so as to improve the quality of indoor air. The fresh air pipe comprises a pipe body 11, the two ends of the pipe body 11 are respectively provided with an air outlet 112 and an air inlet 111, wherein the pipe body 11 extends from the air inlet 111 to the air outlet 112 to form an air inlet channel. The outer peripheral wall 113 of the pipe body 11 has an abdominal portion 113a and a back portion 113b, the downstream inner wall of the abdominal portion 113a is arched towards the back portion 113b, and the downstream inner wall of the back portion 113b is provided in a concave arc surface.

[0045] Specifically, in the embodiment, the air inlet pipe 1 is an irregular tubular structure, which comprises a pipe body 11, the two ends of the pipe body 11 in the length direction are respectively provided with an air inlet 111 and an air outlet 112, the pipe body 11 forms an air inlet channel extending along the length direction of the pipe body 11, the air inlet channel is used to introduce outdoor air from the air inlet 111 to the air outlet 112, and then to the fresh air assembly 100 of the air conditioner, and finally to the room through the fresh air assembly 100 of the air conditioner, so as to ensure that the indoor air has fresh air for a long time. The pipe body 11 has opposite abdominal portion 113a and back portion 113b, the abdominal portion 113a of the pipe body 11 is arched towards the back portion 113b of the pipe body 11 at a position close to the air outlet 112, so as to form a convex surface portion 1131 protruding from the outer peripheral wall 113 to the back portion 113b of the pipe body 11 at the abdominal portion 113a of the pipe body 11, and the back portion 113b of the pipe body 11 is curved towards the abdominal portion 113a of the pipe body 11 to form a concave surface portion 1132 with a concave arc inner wall. The convex surface portion 1131 and the concave surface portion 1132 are arranged to guide the air flow in the air inlet channel, and the downstream of the air inlet channel is arc-shaped to facilitate the air flow from the air inlet 111 to the air outlet 112. The convex surface portion 1131 has a structure similar to a volute tongue structure, and the concave surface portion 1132 has a structure similar to a volute shell structure, which can reduce the resistance of the air flow in the air inlet channel, thereby reducing the noise. Furthermore, under the influence of the convex surface portion 1131 and the concave surface portion 1132, the air flow direction of the air inlet pipe 1 can be changed without increasing the thickness of the air inlet pipe 1, and the air inlet pipe 1 is beneficial to the thin design of the fresh air assembly 100. It should be noted that in the embodiment, the pipe body has an upstream and a downstream, the pipe body extends from the upstream to the downstream, the upstream is the end of the pipe body close to the air inlet, the downstream is the end of the pipe body close to the air outlet, and the flow direction of the pipe body is from the upstream to the downstream.

[0046] In an alternative embodiment, the plane on which the air outlet 112 is located intersects the outer wall of the abdomen 113a. In this embodiment, the air outlet 112 is located on a plane, and the plane on which the air outlet 112 is located intersects the outer wall of the abdomen 113a, so that the curvature of the downstream of the pipe body 11 is larger, which can reduce the resistance of the airflow flowing in the pipe body 11, and make the angle between the air inlet direction and the air outlet direction larger, that is, make the wind direction change angle larger.

[0047] In an alternative embodiment, the size of the pipe body 11 in the direction from the abdomen 113a to the back 113b is the thickness of the pipe body 11, and the thickness of the pipe body 11 decreases first and then increases in the direction extending to the air outlet 112.

[0048] Specifically, as shown in the front cross-sectional view of the pipe body 11, Figure 3 the size H of the pipe body 11 in the direction from the abdomen 113a to the back 113b is the thickness of the pipe body 11, which is an important factor affecting the thickness of the fresh air assembly 100. The thickness of the pipe body 11 of the present application decreases first and then increases in the direction from the air inlet 111 to the air outlet 112, so that the air inlet channel in the pipe body 11 decreases first and then increases, so that the airflow flowing in the air inlet channel is folded twice (first folded to the back 113b side of the pipe body 11, and then folded to the abdomen 113a of the pipe body 11), and then sent to the fan assembly 3 from the air outlet 112. The uniformity of the airflow flowing in the process of being sent to the fan assembly 3 from the air outlet 112 is improved, the flow resistance is reduced, and the effect of reducing noise can be achieved.

[0049] It can be understood that the thickness in the present application is not the wall thickness of the pipe body 11, and the thickness in the foregoing refers to the size of the abdomen 113a of the air inlet pipe 1 in the direction to the back 113b. The smaller the thickness, the thinner the pipe body 11 of the air inlet pipe 1, and the larger the thickness, the thicker the pipe body 11 of the air inlet pipe 1. The wall thickness of the pipe body 11 in the present application is uniform, that is, the wall thickness of the pipe body 11 is substantially the same, so as to ensure that the pressure at each position in the pipe body 11 is more uniform.

[0050] In an alternative embodiment, the size of the pipe body 11 in the direction from the abdomen 113a to the back 113b is the thickness of the pipe body 11 (such as H in Figure 3 , the pipe body 11 has a width perpendicular to the thickness direction of the pipe body 11 (such as L in Figure 2 , and the width of the pipe body 11 increases first and then decreases in the direction extending to the air outlet 112.

[0051] Specifically, as shown in the front cross-sectional view, Figure 3 , L is the size of the air inlet pipe 1 in the direction from the abdomen 113a to the north, that is, the thickness size of the air inlet pipe 1. As shown in Figure 2As shown in the top view of the air inlet pipe 1, L is the width of the pipe body 11, and the width direction of the pipe body 11 is perpendicular to the thickness direction of the pipe body 11. The width of the pipe body 11 gradually increases first and then gradually decreases in the direction extending from the air inlet 111 to the air outlet 112, so as to form a shape of gradually bulging outwards. The thickness of the air inlet pipe 1 of the present application gradually decreases first and then gradually increases in the direction extending from the air inlet 111 to the air outlet 112. The decrease of the thickness of the pipe body 11 narrows the air inlet channel at the position where the thickness decreases, which increases the air flow speed at the narrowed position, thereby increasing the air flow resistance at the position. Therefore, the width of the pipe body 11 of the present application is expanded so as to make the pipe body 11 flat and increase the cross-sectional area of the air inlet channel inside the pipe body 11, which can avoid the above-mentioned increase of the air flow speed and the air flow resistance, thereby further reducing the air flow speed in the air inlet channel and the air flow resistance in the air inlet channel, and improving the uniformity of the air flow.

[0052] In an optional embodiment, the diameter of the air outlet is greater than the diameter of the air inlet. In the embodiment, the shapes of the air inlet and the air outlet are both circular. The diameter of the air outlet is greater than the diameter of the air inlet in the present application, so that the air flow speed out of the air outlet 112 is less than the air flow speed into the air inlet 111, thereby reducing the air flow speed when the air flow is sent to the fan assembly 3, reducing the air flow resistance, and further reducing the noise.

[0053] In an optional embodiment, the maximum width of the air inlet pipe 1 is greater than the diameter of the air outlet 112. As shown in the figure, L2 is the maximum width of the air inlet pipe 1, L3 is the diameter of the air outlet 112, and L1 is the diameter of the air inlet. L2 is greater than L3, and L1 is less than L3. Figure 2

[0054] In an optional embodiment, the cross-sectional area of the air inlet channel increases in the direction extending to the air outlet 112. Specifically, the air inlet channel extends from the air inlet 111 to the air outlet 112, and the cross-sectional area of the air inlet channel increases in the direction extending from the air inlet 111 to the air outlet 112. After the air flow enters the air inlet 111, it enters the air inlet channel with the cross-sectional area gradually increasing. Since the ventilation cross-sectional area of the air inlet channel gradually increases, the air flow speed in the air inlet channel gradually decreases, which reduces the air flow resistance in the air inlet channel, thereby reducing the noise. In addition, the gradual increase of the ventilation cross-sectional area of the air inlet channel further increases the uniformity of the air flow, thereby further reducing the air flow resistance. It should be noted that the cross-section of the air inlet channel in the embodiment is the ventilation cross-section, which is perpendicular to the air flow direction in the air inlet channel.

[0055] ​In an optional embodiment, the thickness of the air inlet pipe 1 is less than the diameter of the air inlet 111.

[0056] Specifically, the thickness of the air inlet pipe 1 refers to the dimension of the pipe body 11 in the direction extending from the abdomen 113a to the back 113b. The thickness of the air inlet pipe 1 first decreases and then increases in the process of extending from the air inlet 111 to the air outlet 112. The thickness of the pipe body 11 of the air inlet pipe 1 of the present application is less than the diameter of the air inlet 111. It is an urgent problem in the art to design a new air component 100 with thin thickness and low resistance. The air inlet pipe 1 of the present application can be designed to be thinner, and the resistance of airflow can be reduced without increasing the thickness of the air inlet pipe 1. Therefore, the competitiveness of the air inlet pipe 1 of the present application is greatly improved, and the new air component 100 using the air inlet pipe 1 of the present application can also be made thinner.

[0057] In an optional embodiment, the air inlet direction of the air inlet 111 and the air outlet direction of the air outlet 112 are arranged at an angle; and / or, the angle between the air inlet direction and the air outlet direction is in the range of 50°-130°.

[0058] Specifically, the air inlet pipe 1 of the present application can change the flow direction of the airflow to send the fresh air from the outdoor to the new air component 100 of the air conditioner, and then to the indoor. Under the premise of changing the air direction, the thickness of the air inlet pipe 1 of the present application can be designed to be thinner, and the outside air can be guided to the new air component 100 through the worm tongue structure and the worm shell structure in the air inlet pipe 1, which reduces the resistance of the airflow in the air inlet channel and reduces the noise. Figure 3 As shown in the cross-sectional view, the angle between the airflow direction of the air inlet of the air inlet pipe 1 and the airflow direction of the air outlet in the present embodiment is 90°. In the related art, when the airflow direction is adjusted by 90°, the air inlet pipe 1 needs to be arranged in an L shape, which greatly increases the thickness of the air inlet pipe 1, thereby increasing the overall size of the air conditioner. The air inlet pipe 1 of the present application is arranged in an irregular tubular structure, which can be arranged to be thinner in the thickness direction; at the same time, it can also achieve the effect of reducing the airflow resistance in the air inlet pipe 1 to reduce the noise; and the airflow direction can also be adjusted. The angle between the airflow direction of the air inlet and the airflow direction of the air outlet can also be other angles, and the angle is in the range of 50°-130°. The specific angle can be set according to actual needs.

[0059] In an optional embodiment, the inner wall of the pipe body 11 of the air inlet pipe 1 is a smooth curved surface. The inner surface of the pipe body 11 of the present application is arranged as a smooth curved surface to reduce the straight edges on the inner wall of the pipe body 11, so that the inner surface of the pipe body 11 is more smooth and uniform, which can further reduce the resistance of the airflow in the pipe body 11 to achieve the effect of reducing the noise generated by the airflow.

[0060] In an optional embodiment, a connecting section 12 is also provided at one end of the air inlet of the air inlet pipe 1. The connecting section 12 is provided at one end of the air inlet of the pipe body 11 and is used to connect to the outside.

[0061] Specifically, such as Figures 4 to 7 As shown, a connecting section 12 is also provided at the air inlet position of the air inlet pipe 1. The connecting section 12 is a regular tubular component. The regular shape of the connecting section 12 facilitates its fixation to the outside or connection to other external components, and also improves the stability of the fixation. In this embodiment, the connecting section 12 and the air inlet pipe 1 are integrally formed, reducing assembly steps, simplifying the production process, and reducing production costs.

[0062] In an optional embodiment, the radius of the air inlet 111 is in the range of 20mm-30mm; and / or, the radius of the air outlet 112 is in the range of 35mm-47mm; and / or, the width at the widest position of the air inlet duct 1 is in the range of 80mm-100mm.

[0063] In one embodiment, the radius of the air inlet 111 is 25mm, the radius of the air outlet 112 is 42mm, and the maximum width of the air inlet duct 1 is 90mm. After actual noise testing and comparison with noise results under the same airflow, this solution reduces noise by 1.5dB. Please refer to the table below for details.

[0064]

[0065] Another embodiment of this application provides an air inlet duct 1 for introducing outdoor air into the fresh air assembly 100 of an air conditioner. The air inlet duct 1 includes a duct body 11, with an air inlet 111 and an air outlet 112 respectively provided at both ends of the duct body 11.

[0066] The pipe body 11 extends from the air inlet 111 to the air outlet 112 to form an air inlet channel. The air inlet channel is used to guide the air on the side of the air inlet 111 to the side of the air outlet 112. The abdominal portion 113a of the outer peripheral wall 113 of the pipe body 11 is arched towards the back portion 113b of the outer peripheral wall 113 of the pipe body 11 to form the convex portion 1131 and the concave portion 1132 opposite to each other at the abdominal portion 113a of the pipe body 11 and the back portion 113b of the pipe body 11. The dimension of the pipe body 11 from the abdominal portion 113a to the back portion 113b is the thickness of the pipe body 11, the pipe body 11 has a width perpendicular to the thickness direction of the pipe body 11, and the width of the pipe body 11 increases first and then decreases in the direction extending to the air outlet 112. The maximum width of the pipe body 11 is greater than the diameter of the air outlet 112, and the diameter of the air inlet 111 is less than the diameter of the air outlet 112. It should be noted that in the present embodiment, the pipe body has an upstream and a downstream, and the pipe body extends from the upstream to the downstream side, the upstream is the end of the pipe body close to the air inlet, the downstream is the end of the pipe body close to the air outlet, and the flow direction of the pipe body is from the upstream to the downstream.

[0067] The structure of the air inlet pipe 1 is optimized in the present application, and the pipe body 11 is arranged in an irregular flat structure. The abdominal portion 113a of the outer peripheral wall 113 of the pipe body 11 is arched towards the back portion 113b of the outer peripheral wall 113 of the pipe body 11 to form the convex portion 1131 and the concave portion 1132 opposite to each other at the abdominal portion 113a of the pipe body 11 and the back portion 113b of the pipe body 11, so that the air inlet channel inside the pipe body 11 has a guiding effect, and the downstream of the air inlet channel is arc-shaped, thereby facilitating the air flow of the air inlet 111 to be guided to the air outlet 112. Among them, the structure of the convex portion 1131 is similar to the structure of the tongue, and the structure of the concave portion 1132 is similar to the structure of the volute, which can reduce the resistance of the air flowing in the air inlet channel, thereby achieving the effect of reducing noise. Furthermore, under the influence of the convex portion 1131 and the concave portion 1132, the air flow direction of the air inlet pipe 1 of the present application can be changed, and the thickness of the air inlet pipe 1 does not need to be increased during the change. The air inlet pipe 1 of the present application is beneficial to the thin design of the fresh air assembly 100. The thickness of the present application decreases first and then increases, and the width increases first and then decreases, which can ensure that the air flow of the air inlet pipe 1 is uniform in the direction extending from the air inlet 111 to the air outlet 112, and can reduce the resistance of the air flow, so as to achieve the effect of reducing noise.

[0068] Please refer to Figure 8 The present application also relates to a fresh air assembly 100, which comprises the above-mentioned air inlet pipe 1, the cavity 2 and the fan assembly 3. The cavity 2 is connected to the air inlet pipe 1, and the fan assembly 3 is arranged in the cavity 2. The cavity 2 is integrally connected with the air inlet pipe 1.

[0069] Specifically, the fresh air assembly 100 of the present application comprises an air inlet pipe 1, a cavity 2 and a fan assembly 3. The cavity 2 is a square piece with an opening, and the bottom wall of the cavity 2 is connected to one end of the air outlet 112 of the air inlet pipe 1. The fan assembly 3 is arranged in the cavity 2 to guide the air entering from the cavity 2 to other directions. The fan assembly 3 comprises a filter screen 31, an upper volute 32, a lower volute 33 and an impeller 34. The upper volute 32 and the lower volute 33 are assembled together and form a containing cavity inside, and the impeller 34 is arranged in the containing cavity formed by the lower volute 33 and the lower volute 33. The filter screen 31 is arranged on the bottom wall of the cavity 2, and the whole of the upper volute 32 and the lower volute 33 is arranged above the filter screen 31, and the filter screen 31 is used to filter the air introduced from the air inlet pipe 1. In the embodiment, the cavity 2 is integrally connected with the air inlet pipe 1 to reduce the assembly process of the air inlet pipe 1 and the cavity 2 and reduce the manufacturing cost. The fresh air assembly 100 of the present application adopts the above-mentioned air inlet pipe 1, and the air inlet pipe 1 has an irregular flat structure, the abdomen 113a of the outer peripheral wall 113 of the pipe body 11 is arched towards the back 113b of the outer peripheral wall 113 of the pipe body 11 to form the convex surface part 1131 and the concave surface part 1132 arranged oppositely at the abdomen 113a of the pipe body 11 and the back 113b of the pipe body 11, so as to guide the airflow in the pipe body 11 and reduce the resistance of the air flowing in the pipe body 11, thereby reducing the noise. The thickness of the fresh air assembly 100 of the present application is thinner, which is beneficial to reduce the volume of the fresh air assembly 100.

[0070] The present application also relates to an air conditioner comprising the above-mentioned fresh air assembly 100.

[0071] The above-mentioned is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields made by using the content of the present application specification and drawings is included in the patent protection scope of the present application.

Claims

1. An air inlet duct for introducing outdoor air into the fresh air assembly of an air conditioner; characterized in that, include: The pipe body has an air inlet and an air outlet at each end; The pipe extends from the air inlet to the air outlet to form an air intake channel; the outer peripheral wall of the pipe has a belly and a back, the downstream inner wall of the belly arches toward the back, and the downstream inner wall of the back is set with a concave arc surface.

2. The air inlet pipe as described in claim 1, characterized in that, The plane containing the air outlet intersects with the outer wall of the abdomen.

3. The air inlet pipe as described in claim 1, characterized in that, The thickness of the pipe is the dimension from the abdomen to the back, and the thickness of the pipe first decreases and then increases in the direction extending towards the air outlet.

4. The air inlet pipe as described in claim 1, characterized in that, The dimension of the pipe body from the abdomen to the back is the thickness of the pipe body. The pipe body has a width direction perpendicular to the thickness direction of the pipe body. The width of the pipe body first increases and then decreases in the direction extending towards the air outlet.

5. The air inlet pipe as described in claim 3, characterized in that, The diameter of the air outlet is larger than the diameter of the air inlet.

6. The air inlet duct as described in claim 5, characterized in that, The maximum width of the pipe body is greater than the diameter of the air outlet.

7. The air inlet pipe as described in claim 1, characterized in that, The cross-sectional area of ​​the air inlet channel increases in the direction extending toward the air outlet.

8. The air inlet pipe as described in claim 1, characterized in that, The air inlet direction and the air outlet direction are set at an angle; and / or, the angle between the air inlet direction and the air outlet direction is in the range of 50°-130°.

9. The air inlet duct as described in claim 1, characterized in that, The inner wall of the tube is a smooth curved surface.

10. The air inlet duct as described in claim 1, characterized in that, The air inlet pipe also includes a connecting section disposed at one end of the air inlet, the connecting section being used to connect to an external air duct.

11. The air inlet duct as described in claim 8, characterized in that, The radius of the air inlet is in the range of 20mm-30mm; And / or, the radius of the air outlet is in the range of 35mm-47mm; And / or, the width at the widest position of the tube body is in the range of 80mm-100mm.

12. An air inlet duct for introducing outdoor air into the fresh air assembly of an air conditioner; characterized in that, include: The pipe body has an air inlet and an air outlet at each end; The pipe extends from the air inlet to the air outlet to form an air intake channel; the outer peripheral wall of the pipe has a belly and a back, the downstream inner wall of the belly arches towards the back, and the downstream inner wall of the back is concave; the diameter of the air inlet is smaller than the diameter of the air outlet; the dimension of the pipe from the belly to the back is the thickness of the pipe, the pipe has a width perpendicular to the thickness direction, and the width of the pipe first increases and then decreases in the direction extending towards the air outlet; the maximum width of the pipe is greater than the diameter of the air outlet.

13. A fresh air assembly, characterized in that, Includes the air inlet duct as described in any one of claims 1 to 12.

14. The fresh air assembly as described in claim 13, characterized in that, The fresh air assembly also includes a cavity and a fan assembly, the cavity being connected to the air inlet pipe and the fan assembly being disposed within the cavity.

15. The fresh air assembly as described in claim 14, characterized in that, The cavity and the air inlet pipe are connected as a single unit.

16. An air conditioner, characterized in that, Includes the fresh air assembly as described in any one of claims 13 to 15.

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