Air conditioner shell and air conditioner

Abstract

The air conditioner shell comprises a front shell body, a first folding edge, a second folding edge and a top cover, a containing cavity with an opening in the upper end is formed in the front shell body in a surrounding mode, the first folding edge is connected with the upper end of the front shell body and located in the containing cavity, and the second folding edge is connected with the first folding edge and extends upwards. The top cover comprises a top plate and a third folded edge, the third folded edge is connected with the outer edge of the top plate and extends downwards, the top plate abuts against the top face of the second folded edge, and the third folded edge is located on the side, away from the containing cavity, of the second folded edge. And the bottom surface of the third folding edge is separated from the step surface in the height direction. The air conditioner shell has the advantages of being high in appearance attractiveness and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air conditioner shell and an air conditioner. Background Art

[0002] Air conditioners are usually divided into indoor units and outdoor units. The outdoor unit is mainly installed outdoors. The housing of the outdoor unit usually includes a left side panel, a right side panel, a front panel, a bottom panel, a rear cover and a top cover. Each of the left side panel, the right side panel, the front panel and part of the rear cover is provided with an outer edge step on the outer surface adjacent to the top surface. Each of the left side panel, the right side panel, the front panel and part of the rear cover abuts against the top cover through the outer edge step to ensure that the top cover has sufficient support strength. However, during long-distance transportation vibration, trampling, installation and handling, the housing provided above is prone to scratching the paint at the abutment between the top cover and the outer edge step due to collision, resulting in poor appearance and easy rust at the paint peeling place, which affects the service life of the housing. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides an air conditioner casing, which has the advantages of high aesthetic appearance and long service life.

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

[0006] The air-conditioning casing of an embodiment of the utility model includes a front shell, a first folded edge, a second folded edge and a top cover, the front shell is formed around a accommodating cavity with an opening at the upper end; the first folded edge is connected to the upper end of the front shell and is located in the accommodating cavity, the second folded edge is connected to the first folded edge and extends upward, the first folded edge forms a step surface connecting the outer surface of the front shell and the outer surface of the second folded edge; the top cover includes a top plate and a third folded edge, the third folded edge is connected to the outer edge of the top plate and extends downward, the top plate abuts against the top surface of the second folded edge, the third folded edge is located on the side of the second folded edge away from the accommodating cavity, and the bottom surface of the third folded edge is spaced apart from the step surface in the height direction.

[0007] According to the air conditioner housing of the embodiment of the utility model, the front housing, the first folding edge and the second folding edge are connected in sequence, the top surface of the second folding edge is higher than the front housing, after the top cover is connected to the front housing, the top plate of the top cover abuts against the top surface of the second folding edge, the third folding edge of the top cover is located on the side of the second folding edge away from the accommodating cavity, and its bottom surface is spaced apart from the stepped surface in the height direction. Among them, the front housing supports the top cover through the second folding edge, effectively ensuring the support strength of the top cover, and the abutment between the second folding edge and the top plate is blocked by the third folding edge, and the appearance and service life will not be affected by the paint falling off at the abutment. Moreover, the setting of the bottom surface of the third folding edge and the stepped surface being spaced apart in the height direction avoids the bottom surface of the third folding edge and the stepped surface from colliding when the air conditioner housing is in vibration, trampling, installation and transportation, etc., which causes the paint to be scratched or even fall off, and the appearance of the air conditioner housing is more beautiful and the service life is longer.

[0008] In some embodiments, the front housing includes a left rear cover plate, a left side plate, a front panel, a right side plate and a right rear cover plate connected in sequence, the left side plate and the right side plate are parallel and arranged at intervals along a first direction, each of the left rear cover plate and the right rear cover plate is parallel to the front panel and arranged at intervals along a second direction, and the second direction, the first direction and the height direction are perpendicular to each other;

[0009] The first folded edge is connected to the upper end of each of the left rear cover plate, the left side plate, the front panel, the right side plate and the right rear cover plate.

[0010] In some embodiments, the stepped surface includes a first stepped surface connected to the outer surface of the left rear cover plate and a second stepped surface connected to the outer surface of the right rear cover plate, and the first stepped surface and the second stepped surface both extend along the first direction and are spaced apart;

[0011] The distance between the first step surface and the bottom surface of the third folded edge gradually increases or increases in a stepwise manner toward the second step surface, and the distance between the second step surface and the bottom surface of the third folded edge gradually increases or increases in a stepwise manner toward the first step surface.

[0012] In some embodiments, the minimum distance between the step surface and the bottom surface of the third folded edge is M, wherein 0.5 mm ≤ M ≤ 1 mm;

[0013] And / or, the maximum distance between each of the first step surface and the second step surface and the bottom surface of the third folded edge is H, wherein 2mm≤H≤5mm.

[0014] In some embodiments, each of the first step surface and the second step surface includes a gradually inclined surface, and the gradually inclined surface extends along the first direction to a free end of each of the first step surface and the second step surface;

[0015] The two gradually changing inclined surfaces are inclined downward in a direction approaching each other, and the inclination angle of each gradually changing inclined surface is α, wherein 0.5°≤α≤2°.

[0016] In some embodiments, the air conditioner casing further includes a fourth folded edge, the fourth folded edge is connected to the upper end of the second folded edge, the second folded edge extends away from the front shell body, and the top surface of the fourth folded edge is in contact with the bottom surface of the top plate.

[0017] In some embodiments, the angle between the second folded edge and the fourth folded edge is β, wherein 90°≤β≤100°;

[0018] And / or, the width of the fourth folded edge is d, d≥5mm;

[0019] And / or, the air conditioner casing further includes a first reinforcing rib connecting the second folded edge and the fourth folded edge.

[0020] In some embodiments, the second folded edge extends along the height direction, and a plurality of second reinforcing ribs extending along the height direction are provided on the second folded edge. The ratio of the total size of the second reinforcing ribs in the circumferential direction of the front shell to the size of the second folded edge in the circumferential direction of the front shell is L, and L≥70%.

[0021] In some embodiments, the rear end opening of the accommodating cavity is provided, and the air conditioner housing further comprises a middle rear cover plate, which is embedded between the left rear cover plate and the right rear cover plate and closes the rear end opening of the accommodating cavity;

[0022] And / or, a first mounting hole is provided on the second folded edge located above each of the left side panel, the right side panel and the front panel, and a second mounting hole corresponding to the first mounting hole is provided on the third folded edge, and the second folded edge is connected to the third folded edge by a threaded member, and the threaded member passes through the first mounting hole and the second mounting hole.

[0023] The air conditioner according to the embodiment of the utility model comprises the air conditioner casing as described in any of the above embodiments.

[0024] The technical advantages of the air conditioner according to the embodiment of the utility model are the same as the technical advantages of the air conditioner housing in the above-mentioned embodiment, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axonometric view of an air conditioner casing according to an embodiment of the utility model.

[0026] Figure 2 It is a front view of the front shell of the air conditioner casing according to an embodiment of the utility model.

[0027] Figure 3 yes Figure 2 A is an enlarged view of the

[0028] Figure 4 It is a cross-sectional view of an air conditioner casing according to an embodiment of the utility model.

[0029] Figure 5 yes Figure 4 Enlarged view of B.

[0030] Figure 6 It is a rear view of the front shell of the air conditioner casing according to the embodiment of the utility model.

[0031] Figure 7 yes Figure 6 Enlarged view of C.

[0032] Figure 8 It is a schematic diagram of the left rear cover plate in the air conditioner casing according to an embodiment of the utility model.

[0033] Fig. 9 yes Figure 8 Enlarged view of D.

[0034] Reference numerals:

[0035] 1. Front shell; 11. Left rear cover; 12. Left side panel; 13. Front panel; 14. Right side panel; 15. Right rear cover; 2. First folded edge; 21. First step surface; 211. Gradient slope; 3. Second folded edge; 4. Top cover; 41. Top panel; 42. Third folded edge; 5. Fourth folded edge; 6. First reinforcing rib; 7. Second reinforcing rib; 8. Middle rear cover. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0037] Combine the following Figure 1-Figure 9 An air conditioner casing according to an embodiment of the utility model is described.

[0038] The air conditioner housing of the embodiment of the utility model includes a front shell 1, a first folded edge 2, a second folded edge 3 and a top cover 4. The front shell 1 is formed around a receiving cavity with an opening at the upper end. The first folded edge 2 is connected to the upper end of the front shell 1 and is located in the receiving cavity, the second folded edge 3 is connected to the first folded edge 2 and extends upward, and the first folded edge 2 forms a stepped surface connecting the outer surface of the front shell 1 and the outer surface of the second folded edge 3. The top cover 4 includes a top plate 41 and a third folded edge 42, the third folded edge 42 is connected to the outer edge of the top plate 41 and extends downward, the top plate 41 is in contact with the top surface of the second folded edge 3, the third folded edge 42 is located on the side of the second folded edge 3 away from the receiving cavity, and the bottom surface of the third folded edge 42 is spaced apart from the stepped surface in the height direction.

[0039] According to the air conditioner housing of the embodiment of the utility model, the front housing 1, the first folding edge 2 and the second folding edge 3 are connected in sequence, the top surface of the second folding edge 3 is higher than the front housing 1, and after the top cover 4 is connected to the front housing 1, the top plate 41 of the top cover 4 abuts against the top surface of the second folding edge 3, and the third folding edge 42 of the top cover 4 is located on the side of the second folding edge 3 away from the accommodating cavity, and its bottom surface is spaced apart from the stepped surface in the height direction. Among them, the front housing 1 supports the top cover 4 through the second folding edge 3, effectively ensuring the support strength of the top cover 4, and the abutment of the second folding edge 3 and the top plate 41 is blocked by the third folding edge 42, and the appearance and service life will not be affected by the paint falling off at the abutment. Moreover, the setting of the bottom surface of the third folding edge 42 and the stepped surface being spaced apart in the height direction prevents the bottom surface of the third folding edge 42 and the stepped surface from colliding when the air conditioner housing is in vibration, trampling, installation and transportation, etc., resulting in paint scratches or even falling off, and the appearance of the air conditioner housing is more beautiful and has a longer service life.

[0040] It should be noted that the first folded edge 2 is substantially perpendicular to the front shell 1 and extends in the horizontal direction, and the second folded edge 3 is substantially perpendicular to the first folded edge 2 and is located above the first folded edge 2 .

[0041] In some embodiments, Figure 1 , Figure 4 and Figure 6 As shown, the front housing 1 includes a left rear cover plate 11, a left side plate 12, a front panel 13, a right side plate 14 and a right rear cover plate 15 connected in sequence, the left side plate 12 and the right side plate 14 are parallel and arranged at intervals along a first direction, each of the left rear cover plate 11 and the right rear cover plate 15 is parallel to the front panel 13 and arranged at intervals along a second direction, and the second direction, the first direction and the height direction are perpendicular to each other. The upper end of each of the left rear cover plate 11, the left side plate 12, the front panel 13, the right side plate 14 and the right rear cover plate 15 is connected to a first folded edge 2.

[0042] That is, the first folded edge 2 and the second folded edge 3 are both located above each of the left rear cover plate 11, the left side plate 12, the front panel 13, the right side plate 14 and the right rear cover plate 15. Each of the left rear cover plate 11, the left side plate 12, the front panel 13, the right side plate 14 and the right rear cover plate 15 can support the top cover 4 through the second folded edge 3. Therefore, the distribution range of the supporting position of the top cover 4 by the second folded edge 3 is wider, and the supporting strength of the top cover 4 is higher.

[0043] Specifically, the first direction is the left-right direction of the air conditioner housing, and the second direction is the front-back direction of the air conditioner housing. The sum of the dimensions of the left rear cover plate 11 and the right rear cover plate 15 in the first direction is smaller than the dimension of the front panel 13 in the first direction, that is, the left rear cover plate 11 and the right rear cover plate 15 are spaced apart in the first direction. The left rear cover plate 11, the left side panel 12, the front panel 13, the right side panel 14 and the right rear cover plate 15 are integrally formed, the left rear cover plate 11 is perpendicular to the left side panel 12, the left side panel 12 is perpendicular to the front panel 13, the front panel 13 is perpendicular to the right side panel 14, and the right side panel 14 is perpendicular to the right rear cover plate 15.

[0044] In some embodiments, Figure 7 As shown, the step surface includes a first step surface 21 connected to the outer surface of the left rear cover plate 11 and a second step surface connected to the outer surface of the right rear cover plate 15, and the first step surface 21 and the second step surface are both extended along the first direction and spaced apart. The distance between the first step surface 21 and the bottom surface of the third folded edge 42 gradually increases or increases in a stepwise manner toward the direction approaching the second step surface, and the distance between the second step surface and the bottom surface of the third folded edge 42 gradually increases or increases in a stepwise manner toward the direction approaching the first step surface 21.

[0045] That is, when the rear end position of the top plate 41 of the top cover 4 is suspended in the air and is not supported, by expanding the distance between the free ends of the first step surface 21 and the second step surface and the bottom surface of the third folded edge 42, when the top cover 4 is stepped on and deformed downward, the bottom surface of the third folded edge 42 will not collide with the first step surface 21 and the second step surface to cause the paint on the three to be scratched or even fall off, thereby further ensuring the service life of the air conditioner casing.

[0046] In some embodiments, Figure 7 As shown, the minimum distance between the step surface and the bottom surface of the third folded edge 42 is M, where 0.5mm≤M≤1mm. This setting not only ensures that the step surface does not collide with the bottom surface of the third folded edge 42 in complex situations, but also forms a narrow gap with a smaller width at the joint between the two, where the appearance is more beautiful.

[0047] Specifically, the distances between the bottom surface of the third folded edge 42 and the other parts of the stepped surface except the first stepped surface 21 and the second stepped surface are all M, where M can be 0.5 mm, 0.75 mm and 1 mm.

[0048] In some embodiments, Figure 6 As shown, the maximum distance between each of the first step surface 21 and the second step surface and the bottom surface of the third folded edge 42 is H, wherein 2 mm ≤ H ≤ 5 mm.

[0049] This distance can ensure that the rear end of the top cover 4 will never abut and collide with the first step surface 21 and the second step surface when deforming downward, further reducing the risk of rust on the bottom surfaces of the first step surface 21, the second step surface and the third folded edge 42 due to paint peeling.

[0050] Specifically, the maximum distance between each of the first step surface 21 and the second step surface and the bottom surface of the third folded edge 42 may be 2 mm, 3.5 mm, and 5 mm.

[0051] In some embodiments, Figure 7 As shown, each of the first step surface 21 and the second step surface includes a gradual slope 211, and the gradual slope 211 extends along the first direction to the free end of each of the first step surface 21 and the second step surface. The two gradual slopes 211 are inclined downward in a direction close to each other, and the inclination angle of each gradual slope 211 is α, wherein 0.5°≤α≤2°. The design of the gradual slope 211 makes the appearance of the left rear cover plate 11 and the right rear cover plate 15 at the first folded edge 2 more beautiful.

[0052] Specifically, the bottom surface of the third folded edge 42 is a plane, the first step surface 21 and the second step surface further include a reference plane connected to the gradual slope 211, the size of the reference plane in the first direction and the size of the gradual slope 211 in the first direction can be the same, and the inclination angle of the gradual slope 211 can be 0.5°, 1° and 2°. The distance between the reference plane and the bottom surface of the third folded edge 42 is also H.

[0053] In some embodiments, Figure 3 , Figure 5 and Fig. 9 As shown, the air conditioner casing also includes a fourth folded edge 5, which is connected to the upper end of the second folded edge 3, the second folded edge 3 extends in a direction away from the front shell body 1, and the top surface of the fourth folded edge 5 is in contact with the bottom surface of the top plate 41.

[0054] The fitting contact between the fourth folded edge 5 and the top plate 41 effectively increases the contact area between the top plate 41 and the front shell 1 , thereby the front shell 1 has a higher supporting strength for the top plate 41 through the second folded edge 3 and the fourth folded edge 5 .

[0055] In some embodiments, Figure 3As shown, the angle between the second folded edge 3 and the fourth folded edge 5 is β, wherein 90°≤β≤100°. That is, the fourth folded edge 5 can be tilted upward by a certain degree relative to the horizontal plane, and the front shell 1 is more convenient to support the top plate 41 through the fourth folded edge 5, and the contact density between the fourth folded edge 5 and the top plate 41 is higher, and the contact area is larger.

[0056] Specifically, the angle between the second folded edge 3 and the fourth folded edge 5 can be 90°, 95° and 100°.

[0057] And / or, the width of the fourth folded edge 5 is d, d≥5mm. This further increases the contact area between the fourth folded edge 5 and the top plate 41, and the front shell 1 has a higher support strength for the top cover 4 through the fourth folded edge 5. The width of the fourth folded edge 5 is also the size of the fourth folded edge 5 in its extension direction, and the extension direction is perpendicular to the second folded edge 3. The width of the fourth folded edge 5 can be 5mm, 6mm and 7mm.

[0058] And / or, the air conditioner housing further comprises a first reinforcing rib 6 connecting the second folded edge 3 and the fourth folded edge 5. Thus, the bending strength of the connection between the second folded edge 3 and the fourth folded edge 5 is effectively improved, and the fourth folded edge 5 is less likely to bend downwardly relative to the second folded edge 3 when pressed by the top plate 41, and the front housing 1 has a stronger support stability for the top cover 4.

[0059] Specifically, the first reinforcing rib 6 may be a triangular reinforcing rib, and there are a plurality of first reinforcing ribs 6 which are arranged at intervals along the circumference of the front housing 1 .

[0060] In some embodiments, the second folded edge 3 extends in the height direction, and a plurality of second reinforcing ribs 7 extending in the height direction are provided on the second folded edge 3. The ratio of the total size of the second reinforcing ribs 7 in the circumferential direction of the front shell 1 to the size of the second folded edge 3 in the circumferential direction of the front shell 1 is L, and L ≥ 70%.

[0061] The provision of the second reinforcing rib 7 effectively improves the supporting strength of the second folded edge 3 in the height direction, and the second folded edge 3 is less likely to collapse and deform when subjected to pressure from the top cover 4, thereby the front shell 1 has stronger supporting stability for the top cover 4.

[0062] Specifically, the size of the first folded edge 2 in the circumferential direction of the front shell 1 is equal to the size of the front shell 1 in its circumferential direction, the number of the second folded edges 3 can be multiple, and the multiple second folded edges 3 are arranged at intervals along the circumferential direction of the front shell 1, and the second reinforcing ribs 7 are multiple and arranged at intervals along the circumferential direction of the front shell 1. The ratio of the total size of the second reinforcing ribs 7 in the circumferential direction of the front shell 1 to the size of the second folded edge 3 in the circumferential direction of the front shell 1 can be 70%, 72% and 75%.

[0063] In some embodiments, Figure 6As shown, the rear end opening of the accommodating cavity is set, and the air conditioner housing also includes a middle rear cover plate 8, which is embedded between the left rear cover plate 11 and the right rear cover plate 15 and closes the rear end opening of the accommodating cavity. And / or, the second folded edge 3 located above each of the left side plate 12, the right side plate 14 and the front panel 13 is provided with a first mounting hole, and the third folded edge 42 is provided with a second mounting hole corresponding to the first mounting hole one by one, and the second folded edge 3 is connected to the third folded edge 42 by a screw member, and the screw member passes through the first mounting hole and the second mounting hole.

[0064] At this time, the rear side of the top cover 4 is not connected to the second folded edge 3 above the left rear cover plate 11 and the right rear cover plate 15 by screws, so the assembly efficiency of the air conditioner housing is higher.

[0065] Specifically, the threaded member is a screw, which passes through the first mounting hole and is threadedly connected to the corresponding second mounting hole.

[0066] The air conditioner according to the embodiment of the utility model comprises an air conditioner casing as in any of the above embodiments.

[0067] The technical advantages of the air conditioner according to the embodiment of the utility model are the same as the technical advantages of the air conditioner housing in the above-mentioned embodiment, which will not be repeated here.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0069] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0072] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0073] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. An air conditioner housing, characterized in that: include: A front shell (1), wherein the front shell (1) surrounds a receiving cavity with an opening at an upper end; a first folded edge (2) and a second folded edge (3), wherein the first folded edge (2) is connected to the upper end of the front shell (1) and is located in the accommodating cavity, and the second folded edge (3) is connected to the first folded edge (2) and extends upward, and the first folded edge (2) forms a stepped surface connecting the outer surface of the front shell (1) and the outer surface of the second folded edge (3); and A top cover (4), the top cover (4) comprising a top plate (41) and a third folded edge (42), the third folded edge (42) being connected to the outer edge of the top plate (41) and extending downward, the top plate (41) abutting against the top surface of the second folded edge (3), the third folded edge (42) being located on the side of the second folded edge (3) facing away from the accommodating cavity, and the bottom surface of the third folded edge (42) being spaced apart from the step surface in the height direction.

2. The air conditioner casing according to claim 1, characterized in that: The front housing (1) comprises a left rear cover plate (11), a left side plate (12), a front panel (13), a right side plate (14) and a right rear cover plate (15) which are connected in sequence, the left side plate (12) and the right side plate (14) are parallel and arranged at intervals along a first direction, each of the left rear cover plate (11) and the right rear cover plate (15) is parallel to the front panel (13) and arranged at intervals along a second direction, and the second direction, the first direction and the height direction are perpendicular to each other; The upper end of each of the left rear cover plate (11), the left side plate (12), the front panel (13), the right side plate (14) and the right rear cover plate (15) is connected to the first folded edge (2).

3. The air conditioner casing according to claim 2, characterized in that: The step surface comprises a first step surface (21) connected to the outer surface of the left rear cover plate (11) and a second step surface connected to the outer surface of the right rear cover plate (15), the first step surface (21) and the second step surface both extending along the first direction and being spaced apart; The distance between the first step surface (21) and the bottom surface of the third folded edge (42) gradually increases or increases in a step-like manner toward the second step surface, and the distance between the second step surface and the bottom surface of the third folded edge (42) gradually increases or increases in a step-like manner toward the first step surface (21).

4. The air conditioner casing according to claim 3, characterized in that: The minimum distance between the step surface and the bottom surface of the third folded edge (42) is M, wherein 0.5 mm ≤ M ≤ 1 mm; And / or, the maximum distance between each of the first step surface (21) and the second step surface and the bottom surface of the third folded edge (42) is H, wherein 2mm≤H≤5mm.

5. The air conditioner casing according to claim 3, characterized in that: Each of the first step surface (21) and the second step surface comprises a gradually changing inclined surface (211), and the gradually changing inclined surface (211) extends along the first direction to a free end of each of the first step surface (21) and the second step surface; The two gradually changing inclined surfaces (211) are inclined downwards in a direction approaching each other, and the inclination angle of each gradually changing inclined surface (211) is α, wherein 0.5°≤α≤2°.

6. The air conditioner casing according to claim 1, characterized in that: The air conditioner casing further comprises a fourth folded edge (5), the fourth folded edge (5) being connected to the upper end of the second folded edge (3), the second folded edge (3) extending in a direction away from the front shell body (1), and the top surface of the fourth folded edge (5) being in contact with the bottom surface of the top plate (41).

7. The air conditioner casing according to claim 6, characterized in that: The angle between the second folded edge (3) and the fourth folded edge (5) is β, wherein 90°≤β≤100°; And / or, the width of the fourth folded edge (5) is d, d≥5mm; And / or, the air conditioner casing further comprises a first reinforcing rib (6) connecting the second folded edge (3) and the fourth folded edge (5).

8. The air conditioner casing according to claim 1, characterized in that: The second folded edge (3) extends in a height direction, and a plurality of second reinforcing ribs (7) extending in the height direction are provided on the second folded edge (3), and the ratio of the total size of the second reinforcing ribs (7) in a circumferential direction of the front shell (1) to the size of the second folded edge (3) in a circumferential direction of the front shell (1) is L, and L is ≥ 70%.

9. The air conditioner casing according to claim 2, characterized in that: The rear end opening of the accommodating cavity is provided, and the air conditioner housing further comprises a middle rear cover plate (8), wherein the middle rear cover plate (8) is embedded between the left rear cover plate (11) and the right rear cover plate (15) and closes the rear end opening of the accommodating cavity; And / or, a first mounting hole is provided on the second folded edge (3) located above each of the left side panel (12), the right side panel (14) and the front panel (13), and a second mounting hole corresponding to the first mounting hole is provided on the third folded edge (42), and the second folded edge (3) is connected to the third folded edge (42) by a threaded member, and the threaded member passes through the first mounting hole and the second mounting hole.

10. An air conditioner, characterized in that: It comprises an air conditioner casing according to any one of claims 1-9.

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