Fresh air module and air conditioner

Abstract

The invention discloses a fresh air module and an air conditioner. The fresh air module comprises a fresh air inlet pipeline provided with an air inlet; the air inlet is provided with a first flow guide ring assembly and a second flow guide ring assembly, and the first flow guide ring assembly and the second flow guide ring assembly can be installed in a matched mode and form a closed annular flow guide ring structure. And a height difference exists between the first flow guide ring assembly and the second flow guide ring assembly. In this way, the fresh air flow deflects by a certain angle after passing through the flow guide ring structure and then flows into the fresh air inlet pipeline, so that the fresh air flow can smoothly flow through the fresh air inlet pipeline under the condition that collision is small, loss after collision of the fresh air flow is greatly reduced, and the fresh air volume is increased.

Description

Technical Field

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

[0002] In the design and application of fresh air wall-mounted air conditioners, as people's requirements for quality of life continue to improve, the focus on the performance of fresh air air conditioners has become increasingly refined. The common layout of household fresh air wall-mounted units on the current market is to set up a fresh air module separately on the left side of the air conditioning module. This design not only simplifies the manufacturing process, reduces costs, avoids the need to redesign the air duct and air conditioning module mold, but also meets the requirements of space compactness and aesthetics to a certain extent. However, this layout plan is not perfect. The main challenges it brings include small fresh air volume, condensation problems in the air inlet cavity, and airflow collision losses.

[0003] Specifically, the fresh air module generally uses a centrifugal fan for air suction. The fresh air passes through the fresh air inlet duct, the air inlet cover and the filter in turn, and then enters the centrifugal fan along the axial direction. However, in this process, the loss of fresh air volume is inevitable, mainly because there is an obvious airflow collision area inside the air inlet cavity of the fresh air inlet duct (such as Figure 1-2 ), and the fresh air volume is reduced due to the flow direction of the fresh air in the air inlet cavity being perpendicular to the axial direction of the centrifugal fan. And because household wall-mounted air conditioners have strict restrictions on length dimensions, and a larger fresh air module will hinder its aesthetics and installation convenience, this problem is particularly prominent in household wall-mounted air conditioners. As consumers' requirements for quality of life increase, higher standards are put forward for the fresh air volume and noise level of fresh air air conditioners, especially in terms of ensuring sufficient fresh air volume, which poses a challenge to the design of fresh air modules.

[0004] In order to meet these needs, the industry usually increases the size of centrifugal fans (such as increasing the radius) or uses larger diameter fresh air intake ducts to increase the air intake volume. However, such improvement measures are not without disadvantages: the increase in the size of centrifugal fans not only increases the cost and the required installation space, but also the larger diameter fresh air intake ducts require wider installation holes, affecting the aesthetics and convenience of later maintenance.

[0005] Therefore, how to optimize the airflow path while ensuring the efficiency of the fresh air module, reduce the loss after air volume collision, and increase the fresh air volume is an urgent problem to be solved. Summary of the invention

[0006] The present invention provides a fresh air module and an air conditioner, which are used to solve the problem in the prior art that the fresh air module is lost due to airflow collision, resulting in a reduction in the fresh air volume.

[0007] The technical solution of the present invention is a fresh air module, comprising a fresh air inlet duct provided with an air inlet; a first guide ring assembly and a second guide ring assembly are provided on the air inlet, and the first guide ring assembly and the second guide ring assembly can be matched and installed to form a closed annular guide ring structure;

[0008] And there is a height difference between the first guide ring assembly and the second guide ring assembly.

[0009] Furthermore, a height H1 of the first guide ring assembly is lower than a height H2 of the second guide ring assembly, and a value range of the height H1 of the first guide ring assembly is [0.5×H2, 0.8×H2].

[0010] Furthermore, the inner surface of the first guide ring assembly is bent toward the center, so that the cross section of the first guide ring assembly forms an inwardly concave arc structure;

[0011] The outer surface of the second guide ring assembly is bent outwardly, so that the cross section of the second guide ring assembly forms an outward convex arc structure.

[0012] Furthermore, the first guide ring assembly and the second guide ring assembly are symmetrically distributed relative to the central axis of the guide ring structure to form a half-and-half design.

[0013] Furthermore, a mounting frame for fixing the filter structure is provided inside the fresh air module and above the air inlet corresponding to the fresh air module, and a height between the mounting frame and the air inlet is H3;

[0014] The height H2 of the second guide ring assembly ranges from [0.4×H3, 0.7×H3].

[0015] Furthermore, a guide strip structure is provided on one side of the mounting frame corresponding to the air inlet, and the guide strip structure is used to convert the airflow entering the fresh air inlet duct into a laminar flow state.

[0016] Furthermore, the guide bar structure includes a plurality of guide bars arranged along a predetermined direction and at intervals, and all the guide bars form a middle area and edge areas located on both sides of the middle area;

[0017] Wherein, the interval between any two adjacent guide strips located in the middle area is greater than the interval between any two adjacent guide strips located in the edge area.

[0018] Furthermore, each of the guide strips is a curved structure with a continuous curved shape;

[0019] The height of the protrusion of the guide strip is in the range of [3mm, 5mm].

[0020] Furthermore, both ends of the first guide ring assembly facing the second guide ring assembly are provided with blocks;

[0021] Both ends of the second guide ring assembly are matched with slots corresponding to the clamping blocks, and the slots can be matched and connected with the corresponding clamping blocks.

[0022] The present invention also provides an air conditioner, comprising the fresh air module described above.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] The present invention forms a guide ring structure and performs a guide function by means of a first guide ring assembly and a second guide ring assembly with a height difference, so that the fresh air flow will be deviated by a certain angle after passing through the guide ring structure and then flow into the fresh air inlet duct, so that the fresh air flow can smoothly flow through the fresh air inlet duct with less collision, thereby greatly reducing the loss of the fresh air flow after the collision and increasing the fresh air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of velocity vectors of a fresh air flow collision area in an existing fresh air inlet duct in the background technology;

[0028] Figure 2 A schematic diagram of a portion of velocity vectors of a fresh air flow collision area in an existing fresh air inlet duct in the background technology;

[0029] Figure 3 This is a first cross-sectional view of the fresh air module proposed by the present invention;

[0030] Figure 4 for Figure 3 An enlarged schematic diagram of the reference numeral A in FIG.

[0031] Figure 5 A schematic diagram of the structure of the guide ring proposed in the present invention

[0032] Figure 6 This is a schematic diagram of a first partial cross-sectional structure of the guide ring structure proposed by the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the fresh air module proposed by the present invention;

[0034] Figure 8 for Figure 7 An enlarged schematic diagram of the reference numeral B in FIG.

[0035] Fig. 9 This is a schematic diagram of the structure of the fresh air module proposed by the present invention;

[0036] Fig.10 This is a second cross-sectional view of the fresh air module proposed by the present invention;

[0037] Fig.11 for Fig.10 An enlarged schematic diagram of the reference numeral C in FIG.

[0038] Fig.12 This is a schematic diagram of a second partial cross-sectional structure of the guide ring structure proposed by the present invention.

[0039] Reference numerals:

[0040] 10. Fresh air inlet duct;

[0041] 101. Air inlet;

[0042] 20. Guide ring structure;

[0043] 201, first guide ring assembly; 2011, clamping block; 202, second guide ring assembly; 2021, clamping slot; 203, mounting plate;

[0044] 30. Mounting frame;

[0045] 40. Filter structure;

[0046] 50. Guide strip structure;

[0047] 501, guide strip;

[0048] 60. Centrifugal fan. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described features. In addition, it should be noted that this specification describes many features. Although certain features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0050] The principle and structure of the present invention are described in detail below with reference to the accompanying drawings and embodiments.

[0051] The fresh air module proposed in the present invention includes the air outlet, sealing shell and other components that the existing fresh air module should have, which will not be described in detail here.

[0052] Example 1

[0053] See attached Figure 3-4 9. The present invention proposes a fresh air module that can reduce the loss after air collision and increase the amount of fresh air, including a fresh air inlet duct 10 with an air inlet 101; the air inlet 101 is provided with a first guide ring assembly 201 and a second guide ring assembly 202, the first guide ring assembly 201 and the second guide ring assembly 202 can be matched and installed to form a closed ring-shaped guide ring structure 20; the guide ring structure 20 is preferably a circular ring.

[0054] There is a height difference between the first guide ring assembly 201 and the second guide ring assembly 202 .

[0055] It should be noted that the fresh air module proposed in the present invention adopts a centrifugal fan 60 for air suction operation, and the fresh air passes through the fresh air inlet duct 10, the air inlet cover and the filter structure 40 in sequence, and then enters the centrifugal fan 60 along the axial direction. However, in the process of fresh air circulation, the loss of fresh air volume will inevitably occur, mainly because the fresh air flow has an obvious airflow collision area inside the air inlet cavity in the fresh air inlet duct 10. The airflow collision area is the installation frame 30 set in the fresh air inlet duct 10 and used to fix the filter structure 40, which will collide with the fresh air flow in a straight line (refer to the attached Figure 1-2 ), resulting in large losses of fresh air flow after collision and a significant reduction in the amount of fresh air.

[0056] Therefore, the present invention forms a guide ring structure 20 and performs a guide function through a first guide ring component 201 and a second guide ring component 202 with a height difference, so that the fresh air flow will be offset by a certain angle after passing through the guide ring structure 20 and then flow into the fresh air inlet duct 10, thereby avoiding the fresh air flow from directly impacting the mounting frame 30, thereby greatly reducing the loss of the fresh air flow after the collision and increasing the fresh air volume; at the same time, the fresh air flow can also avoid the collision of the fresh air flow with the inner wall of the fresh air inlet duct 10 through the guide ring structure 20 with a height difference, so that the fresh air flow can smoothly flow through the fresh air inlet duct 10 with less collision, thereby reducing the loss of the fresh air flow after the collision and increasing the fresh air volume.

[0057] In order to enable the first guide ring assembly 201 and the second guide ring assembly 202 to better guide the air, thereby reducing the loss after the fresh air flow collides and increasing the fresh air volume, the inner surface of the first guide ring assembly 201 is bent toward the center, so that the cross section of the first guide ring assembly 201 forms an inwardly concave arc structure;

[0058] The outer surface of the second guide ring assembly 202 is bent outwardly, so that the cross section of the second guide ring assembly 202 forms an outward convex arc structure.

[0059] It should be noted that the cross-section of the first guide ring assembly 201 is designed as an inwardly concave arc structure, which is used to guide the fresh air flow to concentrate and pass through a specific path to enhance the fresh air flow guiding effect; and the cross-section of the second guide ring assembly 202 is designed as an outwardly convex arc structure, which is used to make the fresh air flow more evenly distributed around the guide ring structure 20, avoiding the accumulation or stagnation of fresh air flow in local areas, thereby improving the diffusion of fresh air flow and reducing turbulence and noise.

[0060] This can not only effectively prevent the fresh air flow from directly impacting the mounting frame 30, but also prevent the fresh air flow from colliding with the inner wall of the fresh air inlet duct 10, so that the fresh air flow can smoothly flow through the fresh air inlet duct 10 with less collision, thereby reducing the loss of the fresh air flow after the collision and increasing the fresh air volume. At the same time, the cross-section of the first guide ring component 201 is designed as an inner concave arc structure and the cross-section of the second guide ring component 202 is designed as an outer convex arc structure, so that the formed guide ring structure 20 can also play an anti-condensation role to a certain extent, so that the accumulated water caused by slight condensation problems will not directly pass through the air inlet 101 and then the fresh air inlet duct 10, reducing the pollution problem in the fresh air inlet duct 10.

[0061] When the concave arc structure of the first guide ring assembly 201 cooperates with the convex arc structure of the second guide ring assembly 202, the convex arc structure design of the second guide ring assembly 202 can ensure a close fit between the two, forming a stable connection while ensuring good air tightness and / or water tightness.

[0062] The height H1 of the first guide ring assembly 201 is lower than the height H2 of the second guide ring assembly 202 , and the value range of the height H1 of the first guide ring assembly 201 is [0.5×H2, 0.8×H2].

[0063] It should be noted that the height H1 of the first guide ring assembly 201 is not the lower the better, because the fresh air flow will actually go up along the inner wall of the fresh air inlet duct 10, at which time the fresh air flow will form a boundary layer effect, resulting in speed loss of the fresh air flow. Therefore, the value range of the height H1 of the first guide ring assembly 201 is preferably [0.5×H2, 0.8×H2].

[0064] In order to make the first guide ring assembly 201 and the second guide ring assembly 202 better guide the air flow, reduce the loss after the fresh air flow collides, and increase the fresh air volume, refer to the attached Figure 5 The first guide ring assembly 201 and the second guide ring assembly 202 are symmetrically distributed relative to the central axis of the guide ring structure 20 to form a half-and-half design.

[0065] It should be noted that the first guide ring assembly 201 and the second guide ring assembly 202 proposed in this embodiment are both semicircular structures, and the matching combination of the two can form a closed annular guide ring structure 20.

[0066] Of course, in other embodiments, according to actual needs, the first guide ring assembly 201 and the second guide ring assembly 202 do not have to be designed in half, and the first guide ring assembly 201 and the second guide ring assembly 202 can be a part of the circular guide ring structure 20 divided in any proportion, that is, the ratio between the first guide ring assembly 201 and the second guide ring assembly 202 can be 1:3 or 2:3 or other suitable division ratios, which are not limited here.

[0067] In order to ensure that the first guide ring assembly 201 and the second guide ring assembly 202 can be matched and installed to form a closed annular guide ring structure 20, refer to the attached Figure 6 , both ends of the first guide ring assembly 201 facing the second guide ring assembly 202 are provided with a clamping block 2011;

[0068] Both ends of the second guide ring assembly 202 are matched with slots 2021 corresponding to the block 2011 , and the slots 2021 can be matched and engaged with the corresponding block 2011 .

[0069] It should be noted that the first guide ring assembly 201 proposed in this embodiment is also provided with a mounting plate 203 with a threaded hole at both ends facing the second guide ring assembly 202. The loosened bolts can be matched and passed through the corresponding mounting plate 203 to fix the first guide ring assembly 201 on the air inlet 101, and then the slot 2021 of the second guide ring assembly 202 is matched and connected with the corresponding block 2011 of the first guide ring assembly 201, thereby forming a closed guide ring structure 20.

[0070] Of course, in order to further ensure the sealing of the guide ring structure 20, sealing members, such as O-rings, gaskets, etc., can be added to the connection gaps of the guide ring structure 20. These sealing members can provide additional barriers at the connection gaps to prevent the fresh air from passing through.

[0071] In other embodiments, according to actual conditions, a mounting plate 203 with threaded holes may be provided outwardly at both ends of the second guide ring assembly 202 facing the first guide ring assembly 201, which is not limited here.

[0072] In order to prevent the second guide ring assembly 202 from failing to achieve the guide effect due to being too low, or from being too high to cause the fresh air flow after the guide to still collide, resulting in guide failure, refer to the attached Figure 4 A mounting frame 30 for fixing the filter structure 40 is provided inside the fresh air module and above the air inlet 101, and a height between the mounting frame 30 and the air inlet 101 is H3;

[0073] The height H2 of the second guide ring assembly 202 has a value range of [0.4×H3, 0.7×H3].

[0074] In this way, when the fresh air flow moves upward along the inner wall of the fresh air inlet duct 10 to form a boundary layer effect, the height H2 of the second guide ring assembly 202 is preferably in the range of [0.4×H3, 0.7×H3], which can further reduce the loss of the fresh air flow after collision and increase the fresh air volume.

[0075] Among them, because the fresh air flow can flow smoothly under the guidance of the guide ring structure 20 with less collision, but in fact due to installation and other reasons, there is still some fresh air flow collision, which is impossible to completely avoid. Therefore, in order to solve this problem, refer to the attached Figure 7-8 , the present invention also proposes:

[0076] A guide strip structure 50 is provided on one side of the mounting frame 30 corresponding to the air inlet 101 , and the guide strip structure 50 is used to convert the fresh air flow entering the fresh air inlet duct 10 into a laminar flow state.

[0077] Therefore, the present invention provides a guide ring structure 20 at the air inlet 101, and provides a guide strip structure 50 at the bottom of the mounting frame 30 corresponding to the air inlet 101, so that the fresh air flow can better enter the axial air inlet of the centrifugal fan 60 under the joint action of the guide ring structure 20 and the guide strip structure 50, which can better reduce the loss of the fresh air flow after the collision and increase the fresh air volume; and the guide ring structure 20 can also play an anti-condensation role to a certain extent, so that the accumulated water caused by slight condensation problems will not directly enter the fresh air inlet duct 10 through the air inlet 101, thereby reducing the pollution problem in the fresh air inlet duct 10.

[0078] In order to facilitate the formation of laminar flow of fresh air and improve the flow of fresh air, refer to the attached Figure 8 , the guide bar structure 50 includes a plurality of guide bars 501 arranged along a predetermined direction and at intervals, and all the guide bars 501 form a middle area and edge areas located on both sides of the middle area;

[0079] The interval between any two adjacent guide bars 501 located in the middle area is greater than the interval between any two adjacent guide bars 501 located in the edge area.

[0080] In this way, since the fresh air flow rate in the middle area is larger and the fresh air flow rate in the edge area is smaller, the interval between any two adjacent guide strips 501 located in the middle area is larger than the interval between any two adjacent guide strips 501 located in the edge area. The guide strips 501 with such an interval design are more conducive to the formation of laminar flow state of the fresh air flow, making the fresh air flow more evenly, thereby improving the flow of the fresh air flow.

[0081] It should be noted that this embodiment is illustrated by taking four guide bars 501 as an example, and the four guide bars 501 are arranged along a predetermined direction and at intervals, namely the first guide bar, the second guide bar, the third guide bar and the fourth guide bar. At this time, the interval between the second guide bar and the third guide bar is in the middle area, and the interval between the first guide bar and the fourth guide bar, and the interval between the third guide bar and the fourth guide bar are in the edge area; therefore, the interval between the second guide bar and the third guide bar needs to be greater than the interval between the first guide bar and the fourth guide bar or the interval between the third guide bar and the fourth guide bar, and the interval between the first guide bar and the fourth guide bar is equal to the interval between the third guide bar and the fourth guide bar.

[0082] Wherein, each of the guide strips 501 is a curved structure with a continuous curved shape;

[0083] The height of the protrusion of the guide strip 501 is preferably in the range of [3 mm, 5 mm].

[0084] In this way, it is possible to avoid the situation where the protrusion height of each guide bar 501 is too low, which is not conducive to the formation of a laminar flow state of the fresh air flow; or to avoid the situation where the protrusion height of each guide bar 501 is too high, causing the fresh air flow to collide with the guide bar 501 and lose the fresh air volume.

[0085] Example 2

[0086] Based on Example 1, Figure 9-10 The present invention proposes another fresh air module, including a fresh air inlet duct 10 provided with an air inlet 101; a first guide ring assembly 201 and a second guide ring assembly 202 are provided on the air inlet 101, and the first guide ring assembly 201 and the second guide ring assembly 202 can be matched and installed to form a closed circular guide ring structure 20.

[0087] The first guide ring assembly 201 and the second guide ring assembly 202 are symmetrically distributed relative to the central axis of the guide ring structure 20 to form a half-and-half design; the outer surface of the first guide ring assembly 201 is bent outward, so that the cross section of the first guide ring assembly 201 forms an outward convex arc structure; the inner surface of the second guide ring assembly 202 is bent toward the center direction, so that the cross section of the second guide ring assembly 202 forms an inward concave arc structure. In this way, the first guide ring assembly 201 and the second guide ring assembly 202 can better guide the air flow, reduce the loss after the collision of the fresh air flow, and increase the fresh air volume.

[0088] Further, see Attachment Fig.12 , both ends of the first guide ring assembly 201 facing the second guide ring assembly 202 are provided with a card slot 2021; both ends of the second guide ring assembly 202 are matched with a card block 2011 corresponding to the card slot 2021, and the card block 2011 can be matched and connected with the corresponding card slot 2021; and sealing members, such as O-rings, gaskets, etc., are added to the connection gap of the guide ring structure 20. These sealing members can provide an additional barrier at the connection gap to prevent the fresh air flow from passing through; thereby ensuring that the first guide ring assembly 201 and the second guide ring assembly 202 can be matched and installed to form a closed annular guide ring structure 20.

[0089] Further, see Attachment Fig.11 , the height H1 of the first guide ring assembly 201 is higher than the height H2 of the second guide ring assembly 202, and a mounting frame 30 for fixing the filter structure 40 is provided inside the fresh air module and above the air inlet 101, and the height between the mounting frame 30 and the air inlet 101 is H3;

[0090] The value range of the height H2 of the second guide ring assembly 202 is [0.5×H1, 0.8×H1], and the value range of the height H1 of the first guide ring assembly 201 is [0.4×H3, 0.7×H3].

[0091] This can prevent the first guide ring assembly 201 and the second guide ring assembly 202 from being unable to perform the guide effect due to being too low, or from being too high so that the fresh air flow after the guide still collides, resulting in guide failure.

[0092] Further, a guide bar structure 50 is provided on one side of the mounting frame 30 corresponding to the air inlet 101, and the guide bar structure 50 includes a plurality of guide bars 501 arranged at intervals along a predetermined direction, and all the guide bars 501 form a middle area and edge areas located on both sides of the middle area;

[0093] The interval between any two adjacent guide bars 501 in the middle area is greater than the interval between any two adjacent guide bars 501 in the edge area.

[0094] Wherein, each guide bar 501 is a curved structure with a continuous curved shape;

[0095] The height of the protrusion of each guide strip 501 is preferably in the range of [3 mm-5 mm].

[0096] In this way, a guide ring structure 20 is set at the air inlet 101 of the fresh air module, and a guide strip structure 50 is set at the bottom of the mounting frame 30 corresponding to the air inlet 101, so that the fresh air flow can better enter the axial air inlet of the centrifugal fan 60 through the joint action of the guide ring structure 20 and the guide strip structure 50. In this way, the air conditioner can reduce the loss of the fresh air flow after the collision and increase the fresh air volume while ensuring that its own volume does not increase. The air conditioner can also play an anti-condensation role through the guide ring structure 20, so that the accumulated water caused by slight condensation problems will not directly enter the fresh air inlet duct 10 through the air inlet 101, thereby reducing the pollution problem in the fresh air inlet duct 10.

[0097] Example 3

[0098] Based on the same inventive concept, the present invention also proposes an air conditioner, which includes the fresh air module mentioned above.

[0099] Among them, the present invention proposes that a fresh air module is separately provided on one side of the air-conditioning module of the air conditioner. This design not only simplifies the manufacturing process, reduces costs, and avoids the need to redesign the air duct and air-conditioning module mold, but also meets the requirements of space compactness and aesthetics to a certain extent.

[0100] Then, a guide ring structure 20 is set at the air inlet 101 of the fresh air module, and a guide strip structure 50 is set at the bottom of the mounting frame 30 corresponding to the air inlet 101, so that the fresh air flow can better enter the axial air inlet of the centrifugal fan 60 through the joint action of the guide ring structure 20 and the guide strip structure 50. In this way, the air conditioner can reduce the loss of the fresh air flow after the collision and increase the fresh air volume while ensuring that its own volume does not increase. The air conditioner can also play an anti-condensation role through the guide ring structure 20, so that the accumulated water caused by slight condensation problems will not directly enter the fresh air inlet duct 10 through the air inlet 101, thereby reducing the pollution problem in the fresh air inlet duct 10.

[0101] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A fresh air module, comprising a fresh air inlet duct (10) provided with an air inlet (101); characterized in that: The air inlet (101) is provided with a first guide ring assembly (201) and a second guide ring assembly (202), wherein the first guide ring assembly (201) and the second guide ring assembly (202) can be matched and installed to form a closed annular guide ring structure (20); Furthermore, there is a height difference between the first guide ring assembly (201) and the second guide ring assembly (202).

2. The fresh air module according to claim 1, characterized in that: The height H1 of the first guide ring assembly (201) is lower than the height H2 of the second guide ring assembly (202), and the value range of the height H1 of the first guide ring assembly (201) is [0.5×H2, 0.8×H2].

3. The fresh air module according to claim 1, characterized in that: The inner surface of the first guide ring component (201) is bent toward the center, so that the cross section of the first guide ring component (201) forms an inwardly concave arc structure; The outer surface of the second guide ring component (202) is bent outwards, so that the cross section of the second guide ring component (202) forms an outwardly convex arc structure.

4. The fresh air module according to claim 1, characterized in that: The first guide ring component (201) and the second guide ring component (202) are symmetrically distributed relative to the central axis of the guide ring structure (20) to form a half-and-half design.

5. The fresh air module according to claim 1, characterized in that: A mounting frame (30) for fixing the filter screen structure (40) is provided inside the fresh air module and above the air inlet (101), and the height between the mounting frame (30) and the air inlet (101) is H3; The height H2 of the second guide ring assembly (202) has a value range of [0.4×H3, 0.7×H3].

6. The fresh air module according to claim 5, characterized in that: A guide strip structure (50) is provided on one side of the mounting frame (30) corresponding to the air inlet (101), and the guide strip structure (50) is used to convert the airflow entering the fresh air inlet duct (10) into a laminar flow state.

7. The fresh air module according to claim 6, characterized in that: The guide bar structure (50) comprises a plurality of guide bars (501) arranged along a predetermined direction and at intervals, and all the guide bars (501) form a middle area and edge areas located on both sides of the middle area; Wherein, the interval between any two adjacent guide strips (501) located in the middle area is greater than the interval between any two adjacent guide strips (501) located in the edge area.

8. The fresh air module according to claim 7, characterized in that: Each of the guide strips (501) is a curved structure with a continuous curved shape; The height of the protrusion of the guide strip (501) is in the range of [3 mm, 5 mm].

9. The fresh air module according to claim 1, characterized in that: Blocks (2011) are provided at both ends of the first guide ring assembly (201) facing the second guide ring assembly (202); Both ends of the second guide ring assembly (202) are provided with card slots (2021) corresponding to the card blocks (2011), and the card slots (2021) can be matched and engaged with the corresponding card blocks (2011).

10. An air conditioner, characterized in that: The air conditioner comprises the fresh air module according to any one of claims 1-9.

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