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Abstract

The application discloses an indoor hanging machine, comprising an air conditioner body, a cross-flow fan wheel and a guide air component, the air conditioner body comprises a first volute and a second volute arranged oppositely, the cross-flow air duct is located between the first volute and the second volute, the first volute comprises a first flared section, the second volute comprises a second flared section, the first flared section is located on the upper side of the second flared section, the guide air component comprises a guide air piece rotatable around a pivot axis at an air outlet, when the air volume of the indoor hanging machine is maximum, a set air duct is defined between the guide air piece and the first volute, the width of the set air duct on the cross section increases first and then decreases along the air outlet direction, the guide air piece comprises a guide air surface and an outer surface, the guide air piece has a first guide air state, in the first guide air state, the guide air piece is rotated to a position close to the lower second flared section, and the guide air surface is located on the side of the outer surface close to the first volute, so as to define a first air outlet air duct above the guide air piece between the guide air surface and the first volute. According to the indoor hanging machine, the air volume, air supply range and air supply distance can be improved.

Description

[0001] This application is a divisional application of application number 202011088714.4, filed on 2020-10-13, and entitled "Air Conditioner". Technical Field

[0002] This invention relates to the field of air conditioning technology, and in particular to an indoor wall-mounted air conditioner. Background Technology

[0003] Air conditioners in related technologies, such as portable air conditioners, window air conditioners, or wall-mounted air conditioners, use cross-flow duct components. The cross-flow fan pressurizes the air once it rotates and then delivers the air through the cross-flow duct. At the air outlet, the air is guided by the air guide plate to meet the air delivery angle requirements. However, during the air delivery stage, the air guide plate forcibly changes the airflow turning angle, resulting in a large airflow turning angle and a rapid drop in air pressure. This leads to a shorter air delivery distance and a reduction in air volume, which has an adverse effect on the heat exchange effect. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention provides an indoor wall-mounted air conditioner that can improve airflow, air delivery range, and air delivery distance.

[0005] An indoor wall-mounted air conditioner according to an embodiment of the present invention includes: an air conditioning body having a cross-flow duct and an air outlet communicating with the cross-flow duct; a cross-flow fan wheel disposed in the cross-flow duct and located upstream of the air outlet; in a cross-section perpendicular to the rotation axis of the cross-flow fan wheel, the air conditioning body includes a first volute and a second volute disposed opposite to each other; the cross-flow duct is located between the first volute and the second volute; the first volute includes a first flared section; the second volute includes a second flared section; the first flared section is located above the second flared section; the front end of the first flared section is the outer end of the first volute; the front end of the second flared section is the outer end of the second volute; and the front end of the first flared section is located in front of the front end of the second flared section; an air guide component including an air guide member rotatable about a pivot axis at the air outlet; when the air volume of the indoor wall-mounted air conditioner is at its maximum, the air guide member and the first volute define a set air duct, the set air duct being... The width of the cross-section first increases and then decreases along the air outlet direction. The air guide includes an air guide surface and an outer surface. The air guide has a first air guide state. In the first air guide state, the air guide rotates to a position near the lower second flared section. The air guide surface is located on the side of the outer surface near the first volute, thereby defining a first air outlet duct above the air guide between the air guide surface and the first volute. In the cross-section, the outer end point of the first volute is M, and the outer end point of the second volute... Point N is the center of a base circle with radius R. The projection point of the pivot axis is Oo, which is located within the base circle. A perpendicular line is drawn from point O to line segment MN to obtain the foot point K of the perpendicular. The two endpoints of the air guide in the rotation circumference are P and Q, respectively. A perpendicular line is drawn from point Oo to the perpendicular bisector L of line segment PQ to obtain the foot point B of the perpendicular. Wherein, 0.4MN≤MK≤0.6MN, 0.25MK≤KO≤0.85MK, 0.35KO≤R≤0.75KO, PQ≤0.9MN, and OoB≤0.5R.

[0006] In some embodiments, the air guide can be rotated into the cross-flow duct, and the air guide has a second air guiding state. In the second air guiding state, the air guide is rotated to a position close to the first flared section above, and the air guiding surface is located on the side of the outer surface close to the second volute, so as to define a second air outlet duct located below the air guide between the air guiding surface and the second volute.

[0007] In some embodiments, the first volute includes a first straight segment, a volute tongue segment connected to the inner end of the first straight segment, and a first flared segment connected to the outer end of the first straight segment. The first flared segment extends from the inside out first in a direction away from the extension line of the first straight segment, and then in a direction close to the extension line of the first straight segment.

[0008] In some embodiments, the second volute includes a second straight segment and a second flared segment connected to the outer end of the second straight segment, the second flared segment extending from the inside out toward a direction away from the extension line of the second straight segment.

[0009] In some embodiments, the air guide surface is an arc surface with a curvature of ρ1, and the outer surface includes an arc segment with a curvature of ρ2, wherein 0 < ρ1 < ρ2 ≤ 0.03.

[0010] In some embodiments, the exterior surface further includes two beveled segments, which are respectively connected to the two ends of the arc segment, and the angle α between the beveled segment and the tangent of the arc segment is 0°≤α≤25°.

[0011] In some embodiments, the air guide includes an inner air guide plate and an outer air guide plate. The inner surface of the inner air guide plate is the air guide surface, and the outer surface of the outer air guide plate is the outer finish surface. The two ends of the inner air guide plate in the rotational circumferential direction are respectively connected to the two ends of the outer air guide plate in the rotational circumferential direction, so that a cavity is defined between the inner air guide plate and the outer air guide plate.

[0012] In some embodiments, during the rotation of the air guide, the minimum gap between the air guide and the surface of the first volute facing the second volute is δ1, and the minimum gap between the air guide and the surface of the second volute facing the first volute is δ2, wherein δ1≥4mm and δ2≥4mm.

[0013] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of an air conditioner according to an embodiment of the present invention;

[0015] Figure 2 This is a partial cross-sectional view of an air conditioner according to another embodiment of the present invention, where the air guide is not shown;

[0016] Figure 3 yes Figure 2 The air conditioner shown includes a state diagram of an air guide component;

[0017] Figure 4 yes Figure 2 The air conditioner shown includes another state diagram of the air guide component;

[0018] Figure 5 yes Figure 2The air conditioner shown includes another state diagram of the air guide component;

[0019] Figure 6 yes Figure 5 The diagram showing the cross-sectional width variation of the first air outlet duct is shown.

[0020] Figure 7 This is a partial cross-sectional view of an air conditioner according to another embodiment of the present invention;

[0021] Figure 8 This is a partial cross-sectional view of an air conditioner according to another embodiment of the present invention;

[0022] Figure 9 This is a cross-sectional view of an air conditioner according to another embodiment of the present invention;

[0023] Figure 10 yes Figure 9 The diagram shows the state of the air guide component rotating to another position;

[0024] Figure 11 This is a cross-sectional view of an air guide component according to an embodiment of the present invention;

[0025] Figure 12 yes Figure 11 A magnified view of point F, circled in the middle.

[0026] Figure label:

[0027] Air conditioner 100;

[0028] Air conditioner unit 10;

[0029] Cross-flow air duct 101; First air outlet air duct 1011; Second air outlet air duct 1012; Setting air duct 1013;

[0030] Air outlet 102; Air inlet 103;

[0031] First volute 11; First straight segment 111; Extension line S1 of the first straight segment;

[0032] Cochlear segment 112; First flaring segment 113;

[0033] Second volute 12; Second straight segment 121; Extension line S2 of the second straight segment;

[0034] Second flaring section 122;

[0035] Cross-flow fan 20; Rotation axis 201;

[0036] Air guide component 30; pivot axis 301; air guide element 31;

[0037] Air guide surface 311; extension line of air guide surface S3;

[0038] Exterior finish 312; curved section 3121; sloping section 3122;

[0039] Inner air guide plate 31a; outer air guide plate 31b; cavity 31c. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. Additionally, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0042] Hereinafter, with reference to the accompanying drawings, an air conditioner 100 according to an embodiment of the present invention will be described.

[0043] like Figure 1 As shown, an air conditioner 100 according to an embodiment of the present invention includes: an air conditioning body 10, a cross-flow fan 20, and an air guide component 30. The air conditioning body 10 has a cross-flow duct 101 and an air outlet 102 communicating with the cross-flow duct 101. The cross-flow fan 20 is disposed in the cross-flow duct 101 and located upstream of the air outlet 102. Thus, when the cross-flow fan 20 rotates, airflow can enter the cross-flow duct 101 and then be delivered out of the air conditioning body 10 from the air outlet 102.

[0044] It should be noted that the specific configuration of the air conditioner body 10 according to the embodiments of the present invention is not limited and needs to be determined according to the specific type of air conditioner 100, and is not limited here. In addition, in some embodiments of the present invention, the air conditioner body 10 may also have an air inlet 103 communicating with the cross-flow duct 101, and the cross-flow fan 20 is disposed in the cross-flow duct 101 and located downstream of the air inlet 103. Thus, when the cross-flow fan 20 rotates, air outside the air conditioner body 10 can enter the air conditioner body 10 from the air inlet 103, then enter the cross-flow duct 101, and then be sent out of the air conditioner body 10 from the air outlet 102.

[0045] like Figure 1 As shown, on a cross-section perpendicular to the rotation axis 201 of the cross-flow impeller 20, that is, on a cross-section perpendicular to the rotation axis 201 of the cross-flow impeller 20, for example... Figure 1 In the cross-section shown, the air conditioner body 10 includes a first volute 11 and a second volute 12 disposed opposite to each other, with a cross-flow duct 101 located between the first volute 11 and the second volute 12. It should be noted that the first volute 11 can be a single piece or assembled from multiple parts, and the second volute 12 can be a single piece or assembled from multiple parts, depending on the specific type of the air conditioner body 10, and is not limited here.

[0046] like Figure 1 As shown, the air guiding component 30 includes an air guiding element 31 that is rotatable about a pivot axis 301 at the air outlet 102, for example... Figure 1 The dashed lines indicate some rotatable positions of the air guide 31. When the air conditioner 100 has its maximum airflow, such as... Figure 5 and Figure 6 As shown, a set air duct 1013 is defined between the air guide 31 and the first volute 11. The width of the set air duct 1013 on the cross-section increases first and then decreases along the air outlet direction. That is, when the air outlet volume of the air conditioner 100 is at its maximum, the cross-sectional width of the set air duct 1013 is formed into a structure that first expands and then contracts along the air outlet direction.

[0047] It should be noted that the air volume of the air conditioner 100 can be actually measured or obtained through numerical simulation, and it is understood that it varies depending on the specific type of the air conditioner 100. In addition, the width of the set air duct 1013 in the above-mentioned cross-section refers to the width of the set air duct 1013 in the cross-section perpendicular to the airflow direction at the inlet of the set air duct 1013, such as L2, L3...Li...Ln shown in the figure.

[0048] Based on Bernoulli's equation, static pressure + dynamic pressure = constant. When the airflow in the cross-flow duct 101 reaches the set duct 1013, it can be divided into two stages. In the first stage, the cross-sectional width of the set duct 1013 gradually increases. Since the flow rate remains constant, but the duct width increases, the airflow velocity decreases, resulting in a decrease in airflow pressure and an increase in static pressure. In the second stage, the cross-sectional width of the set duct 1013 gradually decreases, i.e., the duct width decreases, resulting in an increase in airflow velocity and an increase in airflow pressure. Thus, the static pressure and dynamic pressure of the outlet air can be increased, i.e., the resistance of the outlet air can be improved, resulting in a longer air delivery distance.

[0049] Air conditioners in related technologies, such as portable air conditioners, window air conditioners, or wall-mounted air conditioners, use cross-flow duct components. The cross-flow fan pressurizes the air once it rotates and then delivers the air through the cross-flow duct. At the air outlet, the air is guided by the air guide plate to meet the air delivery angle requirements. However, during the air delivery stage, the air guide plate forcibly changes the airflow turning angle, resulting in a large airflow turning angle and a rapid drop in air pressure. This leads to a shorter air delivery distance and a reduction in air volume, which has an adverse effect on the heat exchange effect.

[0050] According to the embodiment of the present invention, when the air volume of the air conditioner 100 is at its maximum, the cross-sectional width of the set air duct 1013 between the air guide surface 311 and the first volute 11 first increases and then decreases along the air outlet direction. Thus, the rotation of the cross-flow impeller 20 can achieve primary pressurization and form a stable airflow field. When the airflow flows to the set air duct 1013, it can increase the static pressure and dynamic pressure of the outlet air, thereby achieving secondary pressurization, improving the resistance of the outlet air, meeting the requirements of large air volume, large range, and long distance air delivery, and solving the problems of air volume attenuation, small air delivery range, and short air delivery distance.

[0051] In some embodiments, such as Figure 1 As shown, the first volute 11 includes a first straight segment 111, a volute tongue segment 112 connected to the inner end of the first straight segment 111, and a first flared segment 113 connected to the outer end of the first straight segment 111. The second volute 12 includes a second straight segment 121 and a second flared segment 122 connected to the outer end of the second straight segment 121. Figure 2 The first flared section 113 extends from the inside out first towards the extension line S1 away from the first straight section, and then towards the extension line S1 closer to the first straight section. The second flared section 122 extends from the inside out towards the extension line S2 away from the second straight section. It should be noted that "inside" in this section refers to the direction closer to the inlet of the cross-flow duct 101 in the airflow direction, and "outside" refers to the direction closer to the outlet of the cross-flow duct 101 in the airflow direction.

[0052] Therefore, by setting the shapes of the first volute 11 and the second volute 12 as described above, combined with Figure 2 This design allows most or all of the first flared section 113 and the second flared section 122 to be located on either side of the extension line S1 of the first straight section and the extension line S2 of the second straight section, respectively. This results in the outer end of the cross-flow duct 101 having a flared shape, increasing the air outlet area of ​​the cross-flow duct 101 at that location, thereby increasing the airflow volume. In short, by designing the first flared section 113 and the second flared section 122, the outer end of the cross-flow duct 101 is made flared, increasing the air outlet area of ​​the cross-flow duct 101 at that location, thereby increasing the airflow volume.

[0053] Combination Figure 6When the first volute 11 and the second volute 12 are constructed as described above, the width of the air duct 1013 on the cross-section can refer to the length of a perpendicular line segment (AD) drawn from the outer endpoint D of the second straight line segment 121 to the first straight line segment 111 on the cross-section, with AD having a foot A. The length of AD is L1. Based on this perpendicular line segment, several straight lines parallel to this perpendicular line segment are drawn. The length of each straight line segment between the first volute 11 and the air guide surface 311 of the air guide 31 is as follows: Figure 6 The L2, L3...Li...Ln shown are the widths of the set air duct 1013 at various points.

[0054] Furthermore, in some embodiments of the present invention, when the air volume of the air conditioner 100 is at its maximum, the cross-sectional width between the extension line S3 of the air guide surface and the first volute 11 is, for example... Figure 6 As shown, Ln+1 and Ln+2 gradually decrease along the air outlet direction relative to the cross-sectional width Ln of the set air duct 1013. This allows for better secondary pressurization of the airflow, increasing the total pressure of the outlet air, thus improving the airflow's resistance and enabling a longer delivery distance.

[0055] like Figure 7 As shown, on a cross-section perpendicular to the rotation axis 201 of the cross-flow impeller 20, the outer end point of the first volute 11 (as shown) Figure 7 The outer end point of the first flared section 113 shown in the figure is M, and the outer end point of the second volute 12 (as shown in the figure) is M. Figure 7 The outer endpoint of the second flared section 122 shown is N. A base circle is drawn with point O as the center and R as the radius. The projection point of the pivot axis 301 is Oo, located within the base circle. A perpendicular line is drawn from point O to line segment MN to obtain the foot of the perpendicular point K. The two endpoints of the air guide 31 in the rotational circumference are P and Q, respectively. Figure 8 Draw the perpendicular bisector L to line segment PQ. Draw a perpendicular line from point Oo to the perpendicular bisector L to obtain the foot point B of the perpendicular. Where 0.4MN≤MK≤0.6MN, 0.25MK≤KO≤0.85MK, 0.35KO≤R≤0.75KO, PQ≤0.9MN, and OoB≤0.5R.

[0056] Therefore, by cleverly setting the above parameters, such as setting the position of the pivot axis 301 of the air guide 31, and matching the design of the circumferential width of the air guide 31, this application can effectively ensure that when the air volume of the air conditioner 100 is at its maximum, the width of the air duct 1013 in the cross-section first increases and then decreases along the air outlet direction, thereby taking into account large air volume, low noise, and large air supply range, and meeting the requirements for heating and cooling comfort.

[0057] For example Figure 1As shown, when the air conditioner 100 is a portable air conditioner, the first flared section 113 is located behind the second flared section 122. The upper end of the first flared section 113 is the outer end of the first volute 11, and the upper end of the second flared section 122 is the outer end of the second volute 12. The upper end of the first flared section 113 is higher than the upper end of the second flared section 122. Therefore, when the air guide 31 rotates to a position close to the front of the second flared section 122, the rear surface of the air guide 31 becomes the air guide surface 311, which defines a first air outlet duct 1011 located behind the air guide 31, thereby achieving rearward air delivery (in conjunction with...). Figure 3 When the air guide 31 rotates to the position near the first flared section 113 on the rear side, the front surface of the air guide 31 becomes the air guide surface 311, which defines a second air outlet duct 1012 located on the front side of the air guide 31 between the air guide 31 and the second volute 12, so as to achieve forward air delivery (in combination with...). Figure 4 ).

[0058] At this time, by setting the above parameters as described above, (1) the air volume of the powerful fan speed of the portable air conditioner of the present invention can be increased to 600 cubic meters, which is 33.3% higher than that of the previous portable air conditioner with a maximum air volume of 450 cubic meters; (2) the air delivery distance of the portable air conditioner of the present invention can reach 11.0m, achieving ultra-long-distance air delivery, while the air delivery distance of the previous portable air conditioner under the same test conditions is only 5.0m; (3) the swing range of the portable air conditioner of the present invention can reach 180°, truly achieving whole-house air delivery without dead angles, while the previous portable air conditioner can only swing air within a 30° range directly in front of the product. It should be noted that other components of the portable air conditioner according to the embodiments of the present invention, such as heat exchangers, chassis, front frame, panel, etc., as well as operation, are known to those skilled in the art and will not be described in detail here.

[0059] For example Figure 9 As shown, the air conditioner 100 is an indoor wall-mounted unit. The first flared section 113 is located above the second flared section 122. The front end of the first flared section 113 is the outer end of the first volute 11, and the front end of the second flared section 122 is the outer end of the second volute 12. The front end of the first flared section 113 is located in front of the front end of the second flared section 122. Therefore, when the air guide 31 rotates to a position close to the lower second flared section 122, the upper surface of the air guide 31 becomes the air guide surface 311, which defines a first air outlet duct 1011 above the air guide 31, thereby achieving upward airflow (e.g., ...). Figure 9 As shown), when the air guide 31 rotates to a position close to the upper first flared section 113, the lower surface of the air guide 31 becomes the air guide surface 311, defining a second air outlet duct 1012 below the air guide 31 between it and the second volute 12, thereby achieving downward airflow (as shown). Figure 10 (As shown).

[0060] At this time, by setting the above parameters as described above, (1) the air volume of the indoor wall-mounted unit of the present invention can be increased to 750 cubic meters, which is 10.3% higher than that of the previous indoor wall-mounted unit with a maximum air volume of 680 cubic meters; (2) the air delivery distance of the indoor wall-mounted unit of the present invention can reach 9.0m, achieving ultra-long-distance air delivery, while the air delivery distance of the previous indoor wall-mounted unit under the same test conditions is only 7.5m; (3) the swing range of the indoor wall-mounted unit of the present invention can reach 180°, truly achieving whole-house air delivery without dead angles, while the previous indoor wall-mounted unit can only swing within a 75° range. It should be noted that other components of the indoor wall-mounted unit according to the embodiments of the present invention, such as heat exchangers, chassis, front frame, panel, etc., as well as operation, are known to those skilled in the art and will not be described in detail here.

[0061] In some embodiments, such as Figure 1 As shown, the air guide 31 includes an air guide surface 311 and an outer surface 312. The air guide 31 has a first air guide state and a second air guide state, as shown... Figure 3 As shown, in the first air-guiding state, the air-guiding surface 311 is located on the side of the outer surface 312 closest to the first volute 11, and the air-guiding surface 311 and the first volute 11 define a first air outlet duct 1011, as shown. Figure 4 As shown, in the second air guiding state, the air guiding surface 311 is located on the side of the outer surface 312 near the second volute 12 and defines a second air outlet duct 1012 between it and the second volute 12.

[0062] It is understandable that during the rotation of the air guide 31 around the pivot axis 301, the position where the air guide 31 blocks the air outlet 102 to the greatest extent is defined as the initial position. When the air guide 31 is located on the side of the initial position that is close to the second volute 12 and far away from the first volute 11, and the air guide 31 rotates within a rotation angle range (hereinafter referred to as the first angle range), the air guide surface 311 and the first volute 11 can define the first air outlet duct 1011. At this time, the air guide 31 is in the first air guiding state. That is to say, the air guide 31 in the first air guiding state does not correspond to one angle, but to multiple angles.

[0063] Similarly, during the rotation of the air guide 31 around the pivot axis 301, when the air guide 31 is located in its initial position on the side closer to the first volute 11 and farther from the second volute 12, and the air guide 31 rotates within a rotation angle range (hereinafter referred to as the second angle range), a second air outlet duct 1012 can be defined between the air guide surface 311 and the second volute 12. At this time, the air guide 31 is in the second air guiding state. That is to say, the air guide 31 in the second air guiding state does not correspond to one angle, but to multiple angles. In addition, it should be noted that, depending on the specific type of air conditioner 100, the specific values ​​of the first angle range and the second angle range can be set according to the actual situation, and are not limited here.

[0064] Therefore, it can be understood that when the air conditioner 100 has the maximum airflow, the set air duct 1013 is defined by the air guide 31 and the first volute 11. Thus, the set air duct 1013 is a specific first air outlet duct 1011. In other words, when the air guide 31 is in the first air guide state and rotates to a set angle position, the first air outlet duct 1011 defined between the air guide 31 and the first volute 11 is the set air duct 1013. Furthermore, it should be noted that when the airflow is at its maximum, the specific set angle position to which the air guide 31 rotates may be different; therefore, the set angle position is not limited.

[0065] In some embodiments, such as Figure 1 As shown, along the circumferential rotation of the air guide 31 (which can be a direction toward the first volute 11 and away from the second volute 12, such as...) Figure 1 The counterclockwise direction shown can also be a direction toward the second volute 12 and away from the first volute 11, such as... Figure 1 (As shown in the clockwise direction), the distance between the air guide surface 311 and the outer surface 312 first increases and then decreases. Thus, while ensuring that the structure of the air duct 1013 meets the above requirements, a certain distance is formed between the air guide surface 311 and the outer surface 312, thereby improving the problem of condensation on the air guide 31.

[0066] In some embodiments, such as Figure 5 and Figure 6 As shown, the two side walls of the air duct 1013 in the width direction are set to be smooth curved surfaces, for example, in Figure 5 and Figure 6In the specific example shown, the surface of the first flared section 113 facing the second flared section 122 and the air guide surface 311 are both smooth curved surfaces. Therefore, when the air conditioner 100 has its maximum airflow, the two sides of the width of the duct 1013 are streamlined curved surfaces, and the cross-section of the duct 1013 can be approximately spherical. This allows the duct 1013 to achieve a smooth transition from gradually increasing to gradually decreasing cross-sectional width, thereby better achieving secondary pressurization. Of course, the invention is not limited to this. In other embodiments of the invention, the surface of the first flared section 113 facing the second flared section 122 and the air guide surface 311 can also be constructed as non-smooth curved surfaces, such as polygonal curved surfaces, etc., which will not be elaborated here.

[0067] exist Figure 11 In the specific example shown, the air guide surface 311 can be an arc surface with a curvature of ρ1, and the outer surface 312 can include an arc segment 3121 with a curvature of ρ2, where 0 < ρ1 < ρ2 ≤ 0.03. Therefore, both the air guide surface 311 and the outer surface 312 of the air guide 31 conform to the wall adhesion effect, resulting in localized positive pressure acceleration of the airflow. This allows the airflow to completely envelop the air guide 31, preventing the airflow from detaching from the surface of the air guide 31 and forming vortices, thus preventing the formation of water droplets due to the convergence of hot and cold air and solving the problem of condensation on the air guide 31.

[0068] Combination Figure 12 The outer surface 312 also includes two inclined sections 3122, which are respectively connected to the two ends of the curved section 3121. That is, the two ends of the curved section 3121 in the arc length direction are respectively connected to the inclined sections 3122. The included angle α between the tangents of the inclined sections 3122 and the curved sections 3121 (i.e., the tangents at the corresponding ends of the inclined sections 3122 and the curved sections 3121) satisfies 0°≤α≤25°. Thus, by designing non-curved sections at both ends of the outer surface 312 and forming an angle α with the curved section 3121, the outer surface 312 conforms to the wall adhesion effect, which locally accelerates the positive pressure of the airflow. This allows the airflow to completely wrap around the air guide 31, preventing the airflow from detaching from the surface of the air guide 31 and forming vortices, thus preventing the formation of water droplets due to the convergence of hot and cold air and solving the problem of condensation on the air guide 31.

[0069] Combination Figure 1 During the rotation of the air guide 31, the air guide 31 can rotate into the cross-flow duct 101, that is, the air guide 31 can rotate to the side of the first volute 11 facing the second volute 12. At this time, there is a clearance fit between the outer surface 312 of the air guide 31 and the surface of the first volute 11 facing the second volute 12. Figure 1As shown, at this time, the minimum gap between the outer surface 312 and the side surface of the first volute 11 facing the second volute 12 is δ1; the air guide 31 can also be rotated to the side of the second volute 12 facing the first volute 11. At this time, the gap between the outer surface 312 of the air guide 31 and the side surface of the second volute 12 facing the first volute 11 is properly fitted, as shown. Figure 1 As shown, the minimum gap between the outer surface 312 and the side surface of the second volute 12 facing the first volute 11 is δ2. Alternatively, a dashed circle is drawn through the point on the outer surface 312 furthest from the pivot axis 301. The minimum gap between this dashed circle and the first volute 11 is δ1, and the minimum gap between this dashed circle and the second volute 12 is δ2, where δ1 ≥ 4 mm and δ2 ≥ 4 mm.

[0070] Therefore, by designing the rotation gap as described above, the airflow can be ensured to flow along the surface of the air guide 31, which conforms to the wall adhesion effect. This ensures that secondary pressurization can be formed, increasing the airflow speed and causing local acceleration of positive pressure. This allows the airflow to completely wrap around the air guide 31, preventing the airflow from detaching from the surface of the air guide 31 and forming vortices. In other words, it prevents the formation of water droplets from the convergence of hot and cold, thus solving the problem of condensation on the air guide 31.

[0071] In short, by limiting the surface curvature of the air guide 31 and the gap between it and the wall of the cross-flow duct 101, the local acceleration positive pressure of the airflow can be guaranteed, the angle of attack between the airflow and the air guide 31 can be controlled within 10°, the problem of cold air not being able to wrap around the air guide 31 can be solved, the airflow can be prevented from detaching from the wall and forming a vortex, the formation of water droplets due to the convergence of hot and cold air can be avoided, and the condensation problem at the air outlet 102 can be solved.

[0072] In related technologies, air conditioners operating at low fan speeds and high frequencies are prone to overcooling and condensation forming on the air guide vane. These condensate droplets easily drip down the outer surface of the air guide vane, affecting normal user operation. In some embodiments of this invention, such as... Figure 11 and Figure 12 As shown, the air guide 31 may include an inner air guide plate 31a and an outer air guide plate 31b. The inner surface of the inner air guide plate 31a is the air guide surface 311, and the outer surface of the outer air guide plate 31b is the outer surface 312. The two ends of the inner air guide plate 31a in the rotational circumferential direction are respectively connected to the two ends of the outer air guide plate 31b in the rotational circumferential direction, so that a cavity 31c is defined between the inner air guide plate 31a and the outer air guide plate 31b. Thus, by forming a closed air cavity between the inner air guide plate 31a and the outer air guide plate 31b, a heat preservation effect can be achieved, avoiding the convergence of hot and cold air. In other words, the air interlayer insulation can prevent the air guide surface 311 or the outer surface 312 from becoming too cold, thus solving the condensation and dripping problem of the air guide 31 in principle.

[0073] It should be noted that the cavity 31c can be used to hold air or insulation material. When holding air, it forms a closed air cavity between the inner air guide plate 31a and the outer air guide plate 31b, achieving an insulation effect, reducing the weight of the air guide component 31, lowering the cost of the air guide plate, and simplifying the processing and assembly of the air guide component 31. When holding insulation material, it can improve the insulation effect and further play a role in preventing condensation.

[0074] In some embodiments of the present invention, such as Figure 11 and Figure 12 As shown, the two ends of the inner air guide plate 31a in the circumferential direction of rotation are respectively snap-fitted to each other. This simplifies assembly and allows for disassembly and maintenance, or the addition or removal of insulation material between the inner air guide plate 31a and the outer air guide plate 31b as needed. Of course, the invention is not limited to this; the inner air guide plate 31a and the outer air guide plate 31b can also be assembled in other ways, such as hot-melt welding, etc., which will not be elaborated here.

[0075] It should be noted that the number of clips along the extension direction of the pivot axis 301 is unlimited and can be multiple, thereby improving the connection reliability of the inner air guide plate 31a and the outer air guide plate 31b. Furthermore, at the assembly position of the inner air guide plate 31a and the outer air guide plate 31b, the surface mating clearance W between them can be controlled within 0.5mm, thereby better ensuring the airflow effect.

[0076] In addition, it should be noted that the air guide component 30 according to the embodiment of the present invention may include not only the air guide component 31, but also a driving device for driving the air guide component 31 to rotate around the pivot axis 301. The specific configuration of the driving device is not limited. For example, in a specific example of the present invention, the two ends of the air guide component 31 can be driven by a stepper motor to rotate the anti-electric shaft. The anti-electric shaft is connected to the air guide component 31 through a bearing seat, thereby realizing the rotation of the air guide component 31.

[0077] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0078] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0080] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An indoor wall-mounted air conditioner, characterized in that, include: An air conditioner body, the air conditioner body having a cross-flow air duct and an air outlet connected to the cross-flow air duct; A cross-flow fan is disposed in the cross-flow duct and located upstream of the air outlet. In a cross-section perpendicular to the rotation axis of the cross-flow fan, the air conditioner body includes a first volute and a second volute disposed opposite to each other. The cross-flow duct is located between the first volute and the second volute. The first volute includes a first flared section, and the second volute includes a second flared section. The first flared section is located above the second flared section. The front end of the first flared section is the outer end of the first volute, and the front end of the second flared section is the outer end of the second volute. The front end of the first flared section is located in front of the front end of the second flared section. An air guide component includes an air guide element rotatable about a pivot axis at the air outlet. When the air volume of the indoor unit is at its maximum, a set air duct is defined between the air guide element and the first volute. The width of the set air duct on the cross-section first increases and then decreases along the air outlet direction. The air guide element includes an air guide surface and an outer surface. The air guide element has a first air guide state. In the first air guide state, the air guide element rotates to a position close to the second flared section below. The air guide surface is located on the side of the outer surface close to the first volute, so as to define a first air outlet duct located above the air guide element between the air guide surface and the first volute. In the cross-section, the outer end point of the first volute is M, and the outer end point of the second volute is N. A base circle is drawn with point O as the center and R as the radius. The projection point of the pivot axis is Oo, which is located inside the base circle. A perpendicular line is drawn from point O to line segment MN to obtain the foot point K of the perpendicular. The two endpoints of the air guide in the rotation circumference are P and Q, respectively. A perpendicular line is drawn from point Oo to the perpendicular bisector L of line segment PQ to obtain the foot point B of the perpendicular. Wherein, 0.4MN≤MK≤0.6MN, 0.25MK≤KO≤0.85MK, 0.35KO≤R≤0.75KO, PQ≤0.9MN, and OoB≤0.5R.

2. The indoor wall-mounted air conditioner according to claim 1, characterized in that, The air guide can be rotated into the cross-flow duct. The air guide has a second air guiding state. In the second air guiding state, the air guide rotates to a position close to the first flared section above, and the air guiding surface is located on the side of the outer surface close to the second volute, so as to define a second air outlet duct located below the air guide between the air guiding surface and the second volute.

3. The indoor wall-mounted air conditioner according to claim 1, characterized in that, The first volute includes a first straight segment, a volute tongue segment connected to the inner end of the first straight segment, and a first flared segment connected to the outer end of the first straight segment. The first flared segment extends from the inside out first in a direction away from the extension line of the first straight segment, and then in a direction close to the extension line of the first straight segment.

4. The indoor wall-mounted air conditioner according to claim 1, characterized in that, The second volute includes a second straight segment and a second flared segment connected to the outer end of the second straight segment, the second flared segment extending from the inside out toward the extension line away from the second straight segment.

5. The indoor wall-mounted air conditioner according to claim 1, characterized in that, The air guide surface is an arc surface with a curvature of ρ1, and the outer surface includes an arc segment with a curvature of ρ2, wherein 0 < ρ1 < ρ2 ≤ 0.

03.

6. The indoor wall-mounted air conditioner according to claim 5, characterized in that, The exterior finish also includes two beveled segments, which are respectively connected to the two ends of the arc segment. The angle α between the beveled segment and the tangent of the arc segment is 0°≤α≤25°.

7. The indoor wall-mounted air conditioner according to claim 1, characterized in that, The air guide includes an inner air guide plate and an outer air guide plate. The inner surface of the inner air guide plate is the air guide surface, and the outer surface of the outer air guide plate is the outer finish surface. The two ends of the inner air guide plate in the rotational circumferential direction are respectively connected to the two ends of the outer air guide plate in the rotational circumferential direction, so that a cavity is defined between the inner air guide plate and the outer air guide plate.

8. The indoor wall-mounted air conditioner according to claim 2, characterized in that, During the rotation of the air guide, the minimum gap between the air guide and the surface of the first volute facing the second volute is δ1, and the minimum gap between the air guide and the surface of the second volute facing the first volute is δ2, wherein δ1≥4mm and δ2≥4mm.

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