Shell assembly and air conditioner

Abstract

The shell assembly comprises a shell, an air outlet duct and a wind wheel, an air inlet is formed in the bottom wall face of the shell, an air outlet is formed in the front wall face of the shell, the air outlet duct and the wind wheel are both arranged in the shell, the wind wheel is arranged at one end of the air outlet duct, and the air inlet is formed in the front wall face of the shell. The other end of the air outlet duct is communicated with the air outlet, the air outlet duct comprises a first air duct wall, one end of the first air duct wall is provided with a volute throat surface, the other end of the first air duct wall is connected with the upper edge of the air outlet, and the volute throat surface is spaced from the wind wheel in the radial direction of the wind wheel; in a projection plane orthogonal to the axial direction of the wind wheel, the radius of the wind wheel is R, the distance between the tail end of the volute throat face and the axis of the wind wheel in the front-back direction of the shell is L1, and L1 is larger than or equal to R and smaller than or equal to R + 12 mm. According to the shell assembly, the air supply range can be enlarged, and the air supply effect and the air supply efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field, specifically, relate to a kind of shell assembly and air conditioner. BACKGROUND

[0002] With the development of economy and the improvement of living standards, people's expectations for air conditioner are not only faster and better cooling and heating speed, but also more and more concerned about the air supply experience of air conditioner. In the related art, the air outlet structure design of the indoor unit of wall-mounted air conditioner is unreasonable, which leads to narrow air supply range, poor air supply effect and air supply efficiency. SUMMARY

[0003] The utility model aims at at least one of the technical problems in the related art.

[0004] Therefore, the embodiment of the utility model provides a kind of shell assembly, which can increase air supply range, improve air supply effect and air supply efficiency.

[0005] The embodiment of the utility model also provides an air conditioner.

[0006] The shell assembly of the embodiment of the utility model includes: a shell, the bottom wall surface of the shell is provided with an air inlet, and the front wall surface of the shell is provided with an air outlet; an air outlet air duct and a fan wheel, the air outlet air duct and the fan wheel are both arranged in the shell, the fan wheel is arranged at one end of the air outlet air duct, the other end of the air outlet air duct is communicated with the air outlet, the air outlet air duct includes a first air duct wall, one end of the first air duct wall has a volute throat surface, the other end of the first air duct wall is connected with the upper edge of the air outlet, the volute throat surface is spaced apart from the fan wheel along the radial direction of the fan wheel, in the projection plane perpendicular to the axial direction of the fan wheel, the radius of the fan wheel is R, and the tail end of the volute throat surface and the axis of the fan wheel are spaced apart in the front-rear direction of the shell by a distance L1, wherein R≤L1≤R+12mm.

[0007] According to the shell assembly of the embodiment of the utility model, by arranging the air outlet on the front wall surface of the shell and communicating the air outlet air duct with the air outlet, compared with the scheme of "air outlet air outlet towards top wall", the problem of air flow obstruction caused by top air outlet can be avoided, so as to reduce the energy consumption of the air conditioner, and the air flow can flow uniformly to a larger space in the room, so as to expand the air supply range. In addition, by setting the distance L1 between the tail end of the volute throat surface and the axis of the fan wheel in the front-rear direction of the shell within the above range, the arrangement path of the air outlet air duct can be optimized, so as to reduce the resistance of air flow passing through the volute throat surface and the noise of air flow passing through the volute throat surface. Therefore, the shell assembly of the embodiment of the utility model can increase the air supply range, improve the air supply effect and the air supply efficiency.

[0008] In some embodiments, in a projection plane orthogonal to the axial direction of the impeller, the tail end of the volute throat surface is below the center of the impeller, and the distance between the tail end of the volute throat surface and the center of the impeller in the up-down direction of the shell is H1, where R / 3≤H1≤2R / 3.

[0009] In some embodiments, in a projection plane orthogonal to the axial direction of the impeller, the tail end of the volute throat surface is below the center of the impeller, and the distance between the tail end of the volute throat surface and the center of the impeller in the up-down direction of the shell is H1, where R / 3≤H1≤2R / 3.

[0010] In some embodiments, in a projection plane orthogonal to the axial direction of the impeller, the tail end of the volute throat surface is below the center of the impeller, and the distance between the tail end of the volute throat surface and the center of the impeller in the up-down direction of the shell is H1, where R / 3≤H1≤2R / 3.

[0011] In some embodiments, in the extension direction from the tail end of the volute throat surface to the head end of the volute throat surface, the gap W between the volute throat surface and the impeller gradually decreases, where 1mm≤W≤8mm.

[0012] In some embodiments, 45mm≤R≤60mm.

[0013] In some embodiments, the first air duct wall further comprises a first air guide surface and an extension surface, one end of the first air guide surface is connected to the volute throat surface, the other end of the first air guide surface is connected to one end of the extension surface, the other end of the extension surface is connected to the upper edge of the air outlet, the extension surface extends in the front-rear direction of the shell, and the distance between the first air guide surface and the impeller gradually increases in the direction from the back to the front of the shell.

[0014] In some embodiments, the air outlet air duct comprises a second air duct wall, the second air duct wall comprises a volute tongue surface and a second air guide surface, the volute tongue surface is spaced apart from the impeller in the radial direction of the impeller, one end of the second air guide surface is connected to the volute tongue surface, and the other end of the second air guide surface is connected to the lower edge of the air outlet, the extension surface and the second air guide surface are arranged opposite to each other in the up-down direction of the shell.

[0015] In some embodiments, the front end of the extension surface is closer to the front side of the shell than the front end of the second air guide surface.

[0016] The air conditioner of another embodiment of the utility model comprises the shell assembly of the embodiment of the utility model.

[0017] According to the air conditioner of the embodiment of the present application, the air outlet is arranged on the front wall of the shell, and the air outlet is communicated with the air outlet air duct, compared with the scheme of "air outlet air outlet air duct", the air outlet air duct can avoid the problem of air flow obstruction caused by the air outlet air duct, so as to reduce the energy consumption of the air conditioner, and is beneficial to the uniform flow of air to the larger space in the room, so as to expand the air supply range. In addition, by setting the distance L1 between the tail end of the volute throat surface and the axis of the fan wheel in the front-rear direction of the shell in the above range, the arrangement path of the air outlet air duct can be optimized, so as to reduce the resistance of the air flow through the volute throat surface, and reduce the noise of the air flow through the volute throat surface. Therefore, the air conditioner of the embodiment of the present application can increase the air supply range, improve the air supply effect and air supply efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of the air conditioner of the embodiment of the present application.

[0019] Figure 2 is a sectional view of part of the air conditioner of the embodiment of the present application.

[0020] Figure 3 is a partial sectional view of the shell assembly of the embodiment of the present application.

[0021] Figure 4 is a partial sectional view of the air outlet air duct and the fan wheel in the related art.

[0022] REFERENCE NUMERALS:

[0023] 1, shell; 11, air inlet; 12, air outlet;

[0024] 2, air outlet air duct; 21, first air duct wall; 211, volute throat surface; 212, first air guide surface; 213, extension surface; 22, second air duct wall; 221, volute tongue surface; 222, second air guide surface;

[0025] 3, fan wheel;

[0026] 4, heat exchanger;

[0027] O1, axis; K1, tail end of volute throat surface; K2, head end of volute throat surface. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0029] The following will be described with reference to the drawings Figures 1 to 4 The shell assembly of the embodiment of the present application and the air conditioner having the same will be described.

[0030] As Figures 1 to 3 shown, the shell assembly of the embodiment of the utility model includes: shell 1, air outlet air duct 2 and wind wheel 3. The bottom wall surface of shell 1 is equipped with air inlet 11, and the front wall surface of shell 1 is equipped with air outlet 12. Air outlet air duct 2 and wind wheel 3 are all arranged in shell 1, and wind wheel 3 is arranged at one end (rear end of air outlet air duct 2) of air outlet air duct 2, and the other end (front end of air outlet air duct 2) of air outlet air duct 2 is communicated with air outlet 12, and air outlet air duct 2 includes first air duct wall 21, one end of first air duct wall 21 has volute throat surface 211, the other end of first air duct wall 21 is connected with the upper edge of air outlet 12, and volute throat surface 211 is spaced apart from wind wheel 3 along the radial direction of wind wheel 3.

[0031] In the projection plane perpendicular to the axial direction, the radius of wind wheel 3 is R, and the distance between the tail end K1 of volute throat surface 211 and the axis O1 of wind wheel 3 in the front-rear direction of shell 1 is L1, wherein R≤L1≤R+12mm.

[0032] It should be noted that the radius of wind wheel 3, i.e. the rotational radius of wind wheel 3. The axis of wind wheel 3, i.e. the projection point of the rotational axis of wind wheel 3 in the projection plane perpendicular to the axial direction of wind wheel 3. When the cylinder of wind wheel 3, the axis of wind wheel 3 is the center of the projection plane perpendicular to the axial direction of wind wheel 3.

[0033] Wherein, the up-down, left-right and front-rear directions of shell 1 are consistent with the up-down, left-right and front-rear directions of the air conditioner after installation.

[0034] According to the shell assembly of the embodiment of the utility model, by arranging air outlet 12 on the front wall surface of shell 1, and air outlet air duct 2 is communicated with air outlet 12, compared with the scheme of "air outlet facing the top wall air outlet", the problem of air flow obstruction caused by top air outlet can be avoided, so as to reduce the energy consumption of air conditioner, and it is beneficial to the uniform flow of air flow to the larger space in the room, so as to expand the air supply range.

[0035] In addition, by setting the distance L1 between the tail end K1 of volute throat surface 211 and the axis O1 of wind wheel 3 in the front-rear direction of shell 1 in the above range, the arrangement path of air outlet air duct 2 can be optimized, so as to reduce the resistance of air flow passing through volute throat surface 211, and reduce the noise of air flow passing through volute throat surface 211. Therefore, the shell assembly of the embodiment of the utility model can increase the air supply range, improve the air supply effect and air supply efficiency.

[0036] In the related art, as Figure 4As shown, at least part of the air outlet of the air conditioner is arranged on the top wall of the shell, and correspondingly, the outlet end of the air outlet air duct also generally extends upward. In the above scheme, dust is easy to enter the air outlet air duct from the air outlet, and further, the air outlet position of the air outlet air duct is easy to accumulate dust. On the other hand, when the air conditioner in the above scheme is installed on the ceiling, since the air outlet air duct blows air upward, the heat exchange airflow will impact the top wall of the room, causing the energy consumption of the air conditioner to increase, and the speed of the heat exchange airflow circulating in the room is slow, affecting the air supply effect and efficiency of the air conditioner.

[0037] The shell assembly of the embodiment of the present application extends the air outlet air duct 2 in the front-rear direction, so that the air outlet air duct 2 can discharge the heat-exchanged airflow from the air outlet 12 on the front side of the shell 1 in the direction from the rear to the front. On the one hand, it can prevent dust from entering the air outlet air duct 2 from the air outlet 12, and on the other hand, it can reduce the air volume of the heat exchange airflow flowing on the ceiling, ensuring that most of the heat exchange airflow can flow uniformly towards a large range of space in the room, which is conducive to improving the air supply effect and efficiency.

[0038] For example, L1 can be R, R+2mm, R+4mm, R+6mm, R+8mm, R+10mm, R+12mm.

[0039] The shell assembly of the embodiment of the present application sets L1 to the above size, which is higher than the volute throat face 211 of the original air outlet air duct (such as the air outlet air duct 2 of the air conditioner in the prior art). Figure 4 Specifically, the value range of L1' of the air outlet air duct in the related art is between R / 3~2R / 3, while the value range of L1 of the embodiment of the present application is between R~R+12mm. The inventors of the present application have found through experimental research that when L1 is set to the above size, the air outlet path of the air outlet air duct 2 can be optimized to improve the noise during air outlet of the air conditioner and improve the air supply efficiency.

[0040] Optionally, as shown in Figure 2 and Figure 3 As shown in the projection plane perpendicular to the axis direction of the fan 3, the tail end K1 of the volute throat face 211 is located below the axis O1 of the fan 3, in other words, in the horizontal plane passing through the axis O1 of the fan 3, the tail end K1 of the volute throat face 211 is located on the lower side of the horizontal plane.

[0041] It should be noted that the tail end K1 of the volute throat face 211, i.e. the lower end of the volute throat face 211. The head end K2 of the volute throat face 211, i.e. the upper end of the volute throat face 211. The volute throat face 211 is located at the junction position of the air outlet air duct 2 and the air inlet air duct, and the tail end K1 of the volute throat face 211 is closer to the air inlet air duct than the head end K2 of the volute throat face 211.

[0042] The calibration method of "the tail end K1 of the snail throat surface 211" is as follows: in the projection plane perpendicular to the axial direction of the wind wheel 3, the intersection point of the straight line passing through the center of the wind wheel 3 and the lower end of the snail throat surface 211 is the endpoint of the tail end K1 of the snail throat surface 211.

[0043] The calibration method of "the head end K2 of the snail throat surface 211" is as follows: in the projection plane perpendicular to the axial direction of the wind wheel 3, the intersection point of the straight line passing through the center of the wind wheel 3 and the upper end of the snail throat surface 211 is the endpoint of the head end K2 of the snail throat surface 211.

[0044] like Figure 2 As shown, the distance between the tail end K1 of the volute throat surface 211 and the axis O1 of the wind wheel 3 in the vertical direction of the housing 1 is H1, where R / 3≤H1≤2R / 3. For example, H1 can be R / 3, R / 2, or 2R / 3. The housing assembly of the embodiment of the present invention sets H1 to the above size, which is different from the original outlet duct 2 (such as Figure 2 The inventors of the present invention have found through experimental research that when H1 is set to the above size, the air outlet path of the air outlet duct 2 can be optimized to reduce the noise level of the air conditioner when it is discharging air and improve the air supply efficiency.

[0045] For ease of understanding, a coordinate system is established with the axis O1 of the wind wheel 3 as the origin, the vertically upward direction as the positive direction of the Y axis, and the horizontally forward direction as the positive direction of the X axis.

[0046] like Figure 2 As shown, the coordinate point (L1, H1) of the tail end K1 of the volute throat surface 211 of the embodiment of the present invention is: (-R-12mm~-R, -2R / 3~-R / 3). Figure 4 As shown, in the solution of the air outlet duct (before optimization) in the related art, the coordinate point (L1', H1') of the tail end K1 of the volute throat surface 211 is: (-2R / 3 to -R / 3, -R-7mm to -R+7mm).

[0047] The inventors of the present utility model discovered through experimental research that when the coordinate point (L1, H1) takes a value within the range of (-R-12mm to -R, -2R / 3 to -R / 3), the layout path of the air outlet duct 2 can be optimized to reduce the resistance of the airflow when passing through the volute throat surface 211, and reduce the noise of the airflow when passing through the volute throat surface 211, and the air supply efficiency can be significantly improved.

[0048] In some embodiments, as Figure 2 As shown, in the projection plane perpendicular to the axial direction of the wind wheel 3, the distance between the head end K2 of the volute throat surface 211 and the axis O1 of the wind wheel 3 in the front-to-back direction of the shell 1 is L2, where R≤L2≤R+8mm.

[0049] For example, L2 can be R, R+2mm, R+4mm, R+6mm, R+8mm.

[0050] The inventor of the present application has found through experimental research that when the distance L2 between the first end K2 of the volute throat surface 211 and the axis O1 of the wind wheel 3 in the front-rear direction of the shell 1 is within the above range, the air outlet path of the air outlet air duct 2 can be optimized to improve the noise when the air conditioner is blowing air and to improve the air supply efficiency.

[0051] Specifically, in the projection plane perpendicular to the axial direction of the wind wheel 3, the distance H2 between the first end K2 of the volute throat surface 211 and the axis O1 of the wind wheel 3 in the up-down direction of the shell 1 is 0≤H2≤R / 3. For example, H2 is 0, R / 5, R / 4, R / 3.

[0052] It can be understood that, as shown in Figure 2 and Figure 3 , the first end K2 of the volute throat surface 211 can be located above or below the axis O1 of the wind wheel 3. The first end K2 of the volute throat surface 211 can be floating up and down with the maximum distance of R / 3 from the horizontal plane passing through the axis O1 of the wind wheel 3 as the reference surface, that is, the first end K2 of the volute throat surface 211 is arranged adjacent to the reference surface.

[0053] The inventor of the present application has found through experimental research that when the distance H2 between the first end K2 of the volute throat surface 211 and the axis O1 of the wind wheel 3 in the up-down direction of the shell 1 is within the above range, the structure of the air outlet air duct 2 can be made more reasonable, which is conducive to reducing the resistance when the airflow flows through the volute throat surface 211 and reducing the noise when the airflow flows through the volute throat surface 211.

[0054] As shown in Figure 2 , in the example of the present application, the coordinate point (L2, H2) of the first end K2 of the volute throat surface 211 is valued as (-R-8mm~-R, -R / 3~R / 3). As shown in Figure 4 , in the scheme of the air outlet air duct (before optimization) in the related art, the coordinate point (L2', H2') of the first end K2 of the volute throat surface 211 is valued as (-R~-R / 2, -4R / 5~-R / 2).

[0055] The inventor of the present application has found through experimental research that when the coordinate point (L2, H2) of the first end K2 of the volute throat surface 211 is valued within the range of (-R-8mm~-R, -R / 3~R / 3), the arrangement path of the air outlet air duct 2 can be optimized to reduce the resistance when the airflow flows through the volute throat surface 211 and reduce the noise when the airflow flows through the volute throat surface 211, and the air supply efficiency can be significantly improved.

[0056] Optionally, as shown in Figure 3As shown, 45mm≤R≤60mm. For example, R can be 45mm, 50mm, 55mm, 60mm. The inventors of the present application have found through experimental research that when the impeller adopts the above radius size, the size of the air conditioner can be reduced on the basis of ensuring that the air conditioner has good air supply efficiency and air supply effect, so that the structure of the whole machine is more lightweight, and the energy consumption is lower.

[0057] In some embodiments, as shown in Figure 3 from the tail end K1 of the volute throat surface 211 to the extension direction of the head end of the volute throat surface 211 (such as Figure 3 from bottom to top direction), the gap W between the volute throat surface 211 and the fan wheel 3 gradually decreases, wherein 1mm≤W≤8mm. Thus, the fan pressure head is improved, and the vibration and noise reduction effect of the air conditioner is improved.

[0058] For example, W can be 1mm, 3mm, 5mm, 7mm, 8mm.

[0059] In some embodiments, as shown in Figure 2 and Figure 3 As shown, the first air duct wall 21 further comprises a first air guide surface 212 and an extension surface 213, one end of the first air guide surface 212 is connected with the volute throat surface 211, the other end of the first air guide surface 212 is connected with one end of the extension surface 213, the other end of the extension surface 213 is connected with the upper edge of the air outlet 12, the extension surface 213 extends along the front-rear direction of the shell 1, and in the direction from back to front of the shell 1, the distance between the first air guide surface 212 and the fan wheel 3 gradually increases. It can be understood that the first air guide surface 212 is an arc surface, and in the direction from back to front, the distance between the arc surface and the fan wheel 3 gradually increases and smoothly transitions with the extension surface 213, thereby improving the flow guiding effect of the first air duct wall 21, reducing the resistance of airflow, and reducing energy consumption.

[0060] In addition, since the extension surface 213 extends along the front-rear direction of the shell 1, the extension surface 213 can discharge the heat-exchanged airflow from the air outlet 12 on the front side of the shell 1 in the direction from back to front, which is conducive to improving the air supply effect and air supply efficiency.

[0061] Specifically, as shown in Figure 2 and Figure 3 As shown, the air outlet duct 2 comprises a second air duct wall 22, the second air duct wall 22 comprises a volute tongue surface 221 and a second air guide surface 222, the volute tongue surface 221 is spaced apart from the fan wheel 3 along the radial direction of the fan wheel 3, one end of the second air guide surface 222 is connected with the volute tongue surface 221, the other end of the second air guide surface 222 is connected with the lower edge of the air outlet 12, and the extension surface 213 and the second air guide surface 222 are arranged opposite to each other along the up-down direction of the shell 1.

[0062] When the air is guided in the air outlet air duct 2, the extended surface 213 and the second air guiding surface 222 arranged oppositely in the up-down direction can send the airflow after heat exchange from the air outlet 12 to the front direction, compared with the scheme of "air outlet air duct upward air outlet", the problem of air flow obstruction caused by air outlet close to the top can be avoided, so as to reduce the energy consumption of the air conditioner, and the airflow can flow uniformly to a larger space in the room, and the air supply effect is good.

[0063] Optionally, as shown in Figure 2 and Figure 3 The front end of the extended surface 213 is closer to the front side of the shell 1 than the front end of the second air guiding surface 222.

[0064] In other words, the front end of the extended surface 213 is located in front of the front end of the second air guiding surface 222, so as to increase the air guiding path, so as to make the blowing distance of the air conditioner longer, and the blown cold air or hot air can flow uniformly and slowly to a larger range, so as to achieve the purpose of rapid cooling (heating).

[0065] In the example of the present application, in order to adapt to the structure of the air outlet end of the air outlet air duct 2, the upper edge of the air outlet 12 is located in front of the lower edge of the air outlet 12. Thus, when the air conditioner works, the airflow after heat exchange flows along the air outlet air duct 2 and is discharged through the air outlet 12, which can reduce the resistance of airflow and has a good air supply effect.

[0066] Another embodiment of the air conditioner of the present application, the heat exchanger 4 and the shell assembly, the shell assembly is the shell assembly of the present application, the heat exchanger 4 is arranged in the shell 1 and located in the lower side of the fan 3. Specifically, the heat exchanger 4 is generally V-shaped structure, the fan 3 is arranged in the upper side area of the V-shaped structure of the heat exchanger 4, and the air inlet 11 is arranged opposite to the lower wall surface of the heat exchanger 4 to heat the airflow entering the shell 1.

[0067] According to the air conditioner of the embodiment of the present application, the air outlet 12 is arranged on the front wall surface of the shell 1, and the air outlet air duct 2 is communicated with the air outlet 12, compared with the scheme of "air outlet air duct upward air outlet", the problem of air flow obstruction caused by air outlet close to the top can be avoided, so as to reduce the energy consumption of the air conditioner, and the airflow can flow uniformly to a larger space in the room, so as to expand the air supply range. In addition, by setting the distance L1 between the tail end K1 of the volute throat surface 211 and the axis O1 of the fan 3 in the front-back direction of the shell 1 in the above range, the arrangement path of the air outlet air duct 2 can be optimized, so as to reduce the resistance of the airflow flowing through the volute throat surface 211, and reduce the noise of the airflow flowing through the volute throat surface 211. Therefore, the air conditioner of the embodiment of the present application can increase the air supply range, improve the air supply effect and air supply efficiency.

[0068] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0069] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0071] In the utility model, unless otherwise specifically defined and limited, the first feature "on" or "under" the second feature can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0072] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that the specific feature, structure, material or characteristic being described with reference to the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the features of different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0073] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and the changes, modifications, replacements and modifications of the above embodiments made by the person skilled in the art are within the protection scope of the present application.

Claims

1. A housing assembly, characterized in that: include: A housing (1), wherein the bottom wall of the housing (1) is provided with an air inlet (11), and the front wall of the housing (1) is provided with an air outlet (12); An air outlet duct (2) and a wind wheel (3), wherein the air outlet duct (2) and the wind wheel (3) are both arranged in the housing (1), the wind wheel (3) is arranged at one end of the air outlet duct (2), and the other end of the air outlet duct (2) is communicated with the air outlet (12), the air outlet duct (2) comprises a first air duct wall (21), one end of the first air duct wall (21) has a snail throat surface (211), the other end of the first air duct wall (21) is connected to the upper edge of the air outlet (12), and the snail throat surface (211) is spaced apart from the wind wheel (3) along the radial direction of the wind wheel (3), In a projection plane orthogonal to the axial direction of the wind wheel (3), the radius of the wind wheel (3) is R, and the distance between the tail end of the volute throat surface (211) and the axis of the wind wheel (3) in the front-to-back direction of the housing (1) is L1, wherein R≤L1≤R+12mm.

2. The housing assembly according to claim 1, wherein: In a projection plane orthogonal to the axial direction of the wind wheel (3), the tail end of the volute throat surface (211) is located below the axis of the wind wheel (3), and the distance between the tail end of the volute throat surface (211) and the axis of the wind wheel (3) in the vertical direction of the housing (1) is H1, wherein R / 3≤H1≤2R / 3.

3. The housing assembly according to claim 1, wherein: In a projection plane orthogonal to the axial direction of the wind wheel (3), the distance between the head end of the volute throat surface (211) and the axis of the wind wheel (3) in the front-to-back direction of the housing (1) is L2, wherein R≤L2≤R+8mm.

4. The housing assembly according to claim 1, wherein: In a projection plane orthogonal to the axial direction of the wind wheel (3), the distance between the head end of the volute throat surface (211) and the axis of the wind wheel (3) in the vertical direction of the housing (1) is H2, wherein 0≤H2≤R / 3.

5. The housing assembly according to claim 1, wherein: In the extension direction from the tail end of the snail throat surface (211) to the head end of the snail throat surface (211), the gap W between the snail throat surface (211) and the wind wheel (3) gradually becomes smaller, wherein 1mm≤W≤8mm.

6. The housing assembly according to claim 1, wherein: 45mm≤R≤60mm.

7. The housing assembly according to any one of claims 1 to 6, characterized in that: The first air duct wall (21) further comprises a first air guide surface (212) and an extension surface (213), one end of the first air guide surface (212) being connected to the volute throat surface (211), the other end of the first air guide surface (212) being connected to one end of the extension surface (213), the other end of the extension surface (213) being connected to the upper edge of the air outlet (12), the extension surface (213) extending along the front-to-back direction of the shell (1), and the distance between the first air guide surface (212) and the wind wheel (3) gradually increasing in the direction from the back to the front of the shell (1).

8. The housing assembly according to claim 7, wherein: The air outlet duct (2) includes a second air duct wall (22), the second air duct wall (22) includes a volute tongue surface (221) and a second air guide surface (222), the volute tongue surface (221) is spaced apart from the wind wheel (3) along the radial direction of the wind wheel (3), one end of the second air guide surface (222) is connected to the volute tongue surface (221), and the other end of the second air guide surface (222) is connected to the lower edge of the air outlet (12), and the extended surface (213) and the second air guide surface (222) are arranged relative to each other along the upper and lower directions of the shell (1).

9. The housing assembly according to claim 8, wherein: The front end of the extended surface (213) is closer to the front side of the housing (1) than the front end of the second air guide surface (222).

10. An air conditioner, characterized in that: The invention comprises a housing assembly according to any one of claims 1 to 9.

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