Volute assembly and clothes processing equipment

Abstract

The embodiment of the utility model discloses a volute assembly and clothes processing equipment, the volute assembly comprises a rear plate, a rear cover assembly and a fan, the rear plate comprises a rear plate body and a fan cover mounting area arranged on the rear plate body, and the fan cover mounting area is formed by the rear plate in an inward concave / convex mode; the rear cover assembly comprises a first fan cover, the first fan cover is connected with the rear plate to form a fan cover cavity, the first fan cover partially covers the fan cover mounting area and is projected on a plane perpendicular to the thickness direction of the rear plate, and at least part of the projection of the fan cover cavity exceeds the fan cover mounting area; the fan is located on the plane where the fan cover installation area is located. According to the volute assembly, the influence of the size limitation of the clothes processing equipment on the installation space of the fan is reduced, and therefore the air volume and efficiency of the fan are improved.

Description

Technical Field

[0001] The present application relates to the technical field of clothing washing and care, and in particular to a volute assembly and clothing processing equipment. Background Art

[0002] Taking a washer-dryer as an example, the volute assembly of the washer-dryer includes a fan. In related art, due to the size restrictions of the washer-dryer, the installation space of the fan is greatly affected, resulting in low fan efficiency and air volume. Utility Model Content

[0003] In view of this, the embodiments of the present application hope to provide a volute assembly and a clothing processing device, aiming to reduce the impact of the size limitation of the clothing processing device on the installation space of the fan and improve the air volume and efficiency of the fan.

[0004] To achieve the above objectives, in a first aspect, an embodiment of the present application provides a volute assembly for a clothes processing device, the volute assembly comprising:

[0005] A rear plate, the rear plate comprising a rear plate body and a fan shield mounting area provided on the rear plate body, the fan shield mounting area being formed by a concave / convex portion of the rear plate;

[0006] A rear cover assembly includes a first air cover, the first air cover being connected to the rear plate to form an air cover cavity, the first air cover being partially disposed over the air cover mounting area, and projected onto a plane perpendicular to the thickness direction of the rear plate, at least a portion of the projection of the air cover cavity exceeds the air cover mounting area;

[0007] The fan is located on the plane where the fan cover installation area is located.

[0008] In one embodiment, the rear plate is provided with a first sunken surface, a second sunken surface, and a transition surface along the thickness direction, the second sunken surface is arranged around the periphery of the first sunken surface and the two are connected by the transition surface, and along the thickness direction of the rear plate, the sunken dimension of the first sunken surface is greater than the sunken dimension of the second sunken surface;

[0009] The wind shield installation area is located on the first sunken surface and is projected on a plane perpendicular to the thickness direction of the rear plate. The part of the projection of the wind shield cavity that exceeds the wind shield installation area has an overlapping area with the projection of the second sunken surface.

[0010] In one embodiment, the side wall of the first wind hood includes a first sub-segment, which constitutes a partial cavity wall of the wind hood cavity. A notch is provided on the first sub-segment, and the transition surface includes a first extension surface. The other parts of the first sub-segment except the notch are sealed with the first sunken surface, and the surface surrounding the notch is sealed with the first extension surface and the second sunken surface.

[0011] In one embodiment, the bottom side area of the transition surface along the height direction of the volute assembly is the first extension surface, and the notch is located at the bottom of the first wind cover along the height direction of the volute assembly.

[0012] In one embodiment, when projected on a plane perpendicular to the first direction, the projections of the two ends of the notch are respectively located on the projections of the two ends of the first extension surface, wherein the first direction is a direction parallel to the perpendicular bisector of the line connecting the two ends of the first extension surface.

[0013] In one embodiment, the first extension surface includes a straight extension segment and two curved extension segments, and the two curved extension segments are respectively located at two ends of the straight extension segment.

[0014] In one embodiment, the bottom side area of the transition surface along the height direction of the volute assembly is the first extension surface, the notch is located at the bottom of the first wind cover along the height direction of the volute assembly, and the extension direction of the first extension surface is perpendicular to the height direction of the clothing processing device.

[0015] In one embodiment, along the direction of the perpendicular bisector of the line connecting the two ends of the first extension surface, the dimension between the first extension surface and the outer edge of the second sunken surface ranges from 15 mm to 30 mm.

[0016] In one embodiment, along the direction of the perpendicular bisector of the line connecting the two ends of the first extension surface, the dimension between the first extension surface and the outer edge of the second sunken surface ranges from 18 mm to 25 mm.

[0017] In one embodiment, the surface surrounding the notch includes a first connecting surface that is sealed with the second sunken surface, and a second connecting surface and a third connecting surface that are respectively sealed with the first extension surface, wherein the second connecting surface and the third connecting surface are connected to both ends of the first connecting surface;

[0018] The first extending surface is a curved surface, the first connecting surface is a plane, and the second connecting surface and the third connecting surface are both curved surfaces.

[0019] In one embodiment, along the thickness direction of the rear plate, a ratio of a size at both ends of the notch to a size at both ends of the first subsegment ranges from 1 / 5 to 1 / 3.

[0020] In one embodiment, along the thickness direction of the rear plate, the sizes of the two ends of the notch range from 12 mm to 25 mm.

[0021] In one embodiment, along the thickness direction of the rear plate, the sizes of the two ends of the notch range from 15 mm to 18 mm.

[0022] In one embodiment, the rear cover assembly further includes a second wind cover, which is disposed on the second sunken surface and is surrounded by the rear plate to form a receiving space, and the first wind cover is located in the receiving space.

[0023] In one embodiment, along the height direction of the volute assembly, the cavity wall on the bottom side of the wind hood cavity is arc-shaped.

[0024] In a second aspect, an embodiment of the present application provides a clothing processing device, comprising the volute assembly described in any one of the above embodiments.

[0025] In the volute assembly of the embodiment of the present application, the rear plate forms a hood installation area by means of inward / outward concavity / convexity, thereby improving the overall structural strength of the rear plate, which is beneficial for the rear plate to relatively stably and reliably support the fan and meet the operation of the fan; the first hood is partially covered in the hood installation area, and the other part is covered in an area outside the hood installation area, projected on a plane perpendicular to the thickness direction of the rear plate, so that at least part of the projection of the hood cavity exceeds the hood installation area. Specifically, the hood cavity is intercepted with a plane perpendicular to the thickness direction of the rear plate as a cutting surface, and the cross-sectional area of the hood cavity will not be completely limited by the area of the hood installation area. The cross-sectional area of the hood cavity will be greater than or equal to the area of the plane where the hood installation area is located, thereby increasing the air volume and efficiency of the fan. In other words, the volute assembly of the embodiment of the present application can reduce the impact of the size limitation of the clothing processing equipment on the installation space of the fan, which is beneficial for improving the air volume and efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the exploded structure of a volute assembly according to an embodiment of the present application, which also shows the installation position of the fan on the volute assembly;

[0027] Figure 2 This is a schematic structural diagram of a rear plate according to an embodiment of the present application;

[0028] Figure 3 for Figure 2 Schematic diagram of the cross-section structure at AA in the middle;

[0029] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0030] Figure 5 This is a structural schematic diagram of an inner cover from one perspective of an embodiment of the present application;

[0031] Figure 6 for Figure 5 Schematic diagram of the cross-section structure at CC;

[0032] Figure 7 for Figure 6Schematic diagram of the cross-section structure at DD in the middle;

[0033] Figure 8 for Figure 7 The enlarged schematic diagram at E in the middle;

[0034] Figure 9 This is a structural schematic diagram of the inner cover from another perspective of an embodiment of the present application;

[0035] Figure 10 This is a structural schematic diagram of the inner cover from another perspective of an embodiment of the present application;

[0036] Figure 11 A schematic diagram of the assembly of an inner cover and a rear plate of the related art;

[0037] Figure 12 This is a schematic diagram of the assembly of the inner cover and the rear plate according to an embodiment of the present application;

[0038] Figure 13 This is a structural schematic diagram of a clothing processing device according to an embodiment of the present application, in which only the volute assembly and the second cylinder are shown.

[0039] Description of Reference Numerals

[0040] 10. Rear plate; 10a. First sunken surface; 10b. Second sunken surface; 10c. Transition surface; 10ca. First extension surface; 10cb. Second extension surface; 20. Rear cover assembly; 21. First hood; 211. First sub-segment; 211a. Notch; 211aa. First connecting surface; 211ab. Second connecting surface; 211ac. Third connecting surface; 212. Second sub-segment; 22. Second hood; 30. Fan; 300. Second cylinder; 10'. Rear plate; 21'. First hood; 211'. First sub-segment. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. The following embodiments are only used to more clearly illustrate the technical solutions of the present application and are therefore only used as examples and are not intended to limit the scope of protection of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0042] In the description of the embodiments of this application, the technical terms "first," "second," "third," etc. are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise specifically defined.

[0043] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0045] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0047] The present application will be described in further detail below with reference to the accompanying drawings.

[0048] Please also refer to Figures 1 to 10 、 Figure 12 and Figure 13 In a first aspect, an embodiment of the present application provides a clothing processing device, the clothing processing device including the volute assembly of any embodiment of the present application.

[0049] It should be noted that the specific type of clothing processing device is not limited here. The clothing processing device is used to wash, dehydrate, and dry clothing. For example, it can be a dryer or a washer-dryer. For example, the embodiments of this application are described using a washer-dryer as an example.

[0050] The washer-dryer can wash and dry clothes. The washer-dryer includes a washing module and a drying module, which are vertically stacked in an up-and-down manner.

[0051] It is understood that, in the height direction, the laundry module can be arranged above the drying module, or the drying module can be arranged above the laundry module. For example, since the laundry module is heavier than the drying module, the heavier laundry module is generally placed at the bottom and the lighter drying module is placed at the top.

[0052] It should be noted that the "height direction" in the embodiment of the present application needs to be understood based on the orientation of the clothing processing device in normal use. Figure 2 "Up", "Down", "Top", and "Bottom" are directions based on the "height direction".

[0053] Please also refer to Figures 1 to 10 、 Figure 12 and Figure 13 In a second aspect, an embodiment of the present application provides a volute assembly for a clothes processing device. The volute assembly includes a rear plate 10, a rear cover assembly 20, and a fan 30.

[0054] The rear plate 10 includes a rear plate body and a fan shield installation area provided on the rear plate body. The fan shield installation area is formed by a concave / convex portion of the rear plate 10 .

[0055] The concept of concave / convex is understood based on the thickness of the rear panel 10. Specifically, along two opposite sides of the thickness of the rear panel 10, with one side as the reference perspective, the fan shield mounting area is formed by the concave portion of the rear panel 10; while from the other side as the reference perspective, the fan shield mounting area is formed by the convex portion of the rear panel 10. The side where the fan shield mounting area is located is the concave portion of the rear panel 10.

[0056] It should be noted that the dimensions of the three directions of different components in the same absolute coordinate system are different. Generally, the length, width and thickness of an object are determined according to the dimensions of the object in the three directions. Length>width>thickness, so the length, width and thickness of different components may be different. For example, the "thickness direction" of the rear panel 10 is as follows: Figure 4 shown.

[0057] The rear plate 10 is a plate-shaped structure, which is arranged on one side of the cylinder assembly. Figure 13The drum assembly includes a first drum (not shown) and a second drum 300, with the first drum being disposed above the second drum 300. The rear plate 10 is disposed on one axial side of the first drum. The first drum is a clothes drying drum, and the second drum 300 is a clothes drying drum or a clothes washing drum. Of course, the rear plate 10 can also be disposed on one axial side of the second drum 300, with the second drum 300 being a clothes drying drum and the first drum being a clothes drying drum or a clothes washing drum.

[0058] It is understandable that the drum assembly may also have only the first drum, that is, the clothing processing device is a clothes dryer, the clothes dryer may be placed directly on the ground, and the rear plate 10 is also arranged close to the ground.

[0059] The rear cover assembly 20 includes a first air cover 21. The first air cover 21 is connected to the rear panel 10 to form an air cover cavity. The first air cover 21 is partially located in the air cover mounting area. When projected onto a plane perpendicular to the thickness of the rear panel 10, at least a portion of the projection of the air cover cavity extends beyond the air cover mounting area. In other words, when the air cover cavity is cut along a plane perpendicular to the thickness of the rear panel 10, the cross-sectional area of the air cover cavity is greater than or equal to the area of the plane containing the air cover mounting area.

[0060] The fan 30 is located on the plane where the fan cover installation area is located.

[0061] Since the fan 30 needs to be mounted on the rear panel 10, specifically on the plane where the hood mounting area is located, the rear panel 10 as a whole must have sufficient structural strength to support the fan 30 and ensure its operation. This is typically achieved by forming a hood mounting area with a recess or protrusion within the rear panel 10, thereby enhancing the structural strength of the rear panel 10. It will be appreciated that the hood mounting area must be formed by the recess or protrusion within the rear panel 10, meaning that the outer edge of the hood mounting area cannot reach the outer edge of the rear panel 10. However, the hood mounting area must be used to enclose and form a hood cavity.

[0062] In related art, after the rear panel forms a hood mounting area by means of an indentation or protrusion, the hood mounting area cannot reach the outer edge of the rear panel. While the overall dimensions of the rear panel remain unchanged, the hood mounting area is relatively small, impacting the overall space of the hood cavity, resulting in lower fan efficiency and air volume. To maintain the same hood mounting area, the overall dimensions of the rear panel must be increased, which in turn increases the overall dimensions of the laundry processing device. In other words, when the overall dimensions of the laundry processing device are limited, the fan installation space is significantly impacted, resulting in lower fan efficiency and air volume.

[0063] In the volute assembly of the embodiment of the present application, the rear plate 10 forms a hood installation area by means of an inward / outward concave / convex portion, thereby improving the overall structural strength of the rear plate 10, facilitating the relatively stable and reliable support of the fan 30 by the rear plate and satisfying the operation of the fan 30; the first hood 21 is partially covered in the hood installation area, and the other part is covered in an area outside the hood installation area, projected on a plane perpendicular to the thickness direction of the rear plate 10, so that at least part of the projection of the hood cavity exceeds the hood installation area. Specifically, when the hood cavity is cut off with a plane perpendicular to the thickness direction of the rear plate 10 as a cutting surface, the cross-sectional area of the hood cavity will not be completely limited by the area of the hood installation area, and the cross-sectional area of the hood cavity will be greater than or equal to the area of the plane where the hood installation area is located, thereby increasing the air volume and efficiency of the fan 30. In other words, the volute assembly of the embodiment of the present application can reduce the impact of the size limitation of the clothing processing equipment on the installation space of the fan 30, thereby improving the air volume and efficiency of the fan 30.

[0064] It should be noted that there is no limitation on the shape of the wall of the air hood cavity.

[0065] In some embodiments, the walls of the wind shield cavity may be arc-shaped. For example, along the height of the volute assembly, the walls of the bottom side of the wind shield cavity may be arc-shaped. The arc-shaped wind shield cavity can reduce fluid turbulence and eddies, which consume additional energy and may reduce the efficiency of the fan 30. The arc-shaped wind shield cavity helps guide the fluid to flow smoothly, reduces energy loss, and thus improves the overall efficiency of the fan 30.

[0066] In other embodiments, the wall of the wind hood cavity may also be an Archimedean spiral structure. An Archimedean spiral is a trajectory produced when a point leaves a fixed point at a constant speed while rotating around the fixed point at a fixed angular velocity. In this embodiment, the point on the wall of the wind hood cavity is located on the Archimedean spiral. Based on a centrifugal fan, the wall of the wind hood cavity adopts an Archimedean spiral structure, which can effectively improve the variable efficiency and pressure ratio of the fan 30, and at the same time expand the operating range of the fan 30 under large flow conditions. The wall of the wind hood cavity with an Archimedean spiral structure is more compatible with the flow field of the fan 30, which is beneficial to improving the efficiency and air volume of the fan 30.

[0067] In one embodiment, please refer to Figures 1 to 4 The rear plate 10 is provided with a first sunken surface 10a and a second sunken surface 10b along its thickness direction. The second sunken surface 10b is arranged around the outer periphery of the first sunken surface 10a and the two are connected by a transition surface 10c. Along the thickness direction of the rear plate 10, the sinking dimension of the first sunken surface 10a is greater than the sinking dimension of the second sunken surface 10b; the wind hood installation area is located on the first sunken surface 10a, and when projected on a plane perpendicular to the thickness direction of the rear plate 10, the projection of the wind hood cavity exceeds the wind hood installation area and has an overlapping area with the projection of the second sunken surface 10b.

[0068] Here, the plane where the air cover installation area is located is the first sunken surface 10a.

[0069] The first sunken surface 10a, the second sunken surface 10b and the transition surface 10c can be understood as follows:

[0070] One side of the back plate 10 in the thickness direction is initially flat. A portion of the flat surface is first recessed to form a recessed surface. A portion of the recessed surface is further recessed to form a first sunken surface 10a. The area of the recessed surface that is not further recessed is the second sunken surface 10b. The area that transitions from the second sunken surface 10b to the first sunken surface 10a is the transition surface 10c. The sunken dimension of the first sunken surface 10a is the dimension between the first sunken surface 10a and the non-recessed area of the flat surface along the thickness direction of the back plate 10, for example Figure 4 The dimension indicated by “L1” in FIG. The sinking dimension of the second sunken surface 10b is the dimension between the second sunken surface 10b and the non-sunken area of the plane along the thickness direction of the rear plate 10, for example Figure 4 The dimension shown as "L2" in the figure.

[0071] There is no limitation on the forming method of the first sunken surface 10a and the second sunken surface 10b. For example, they can be formed by stamping or the like.

[0072] Both the first sunken surface 10a and the second sunken surface 10b can be flat. The flat first and second sunken surfaces 10a, 10b facilitate sealing with other components. Furthermore, components that seal with the first or second sunken surface 10a, 10b can also be flat, thereby simplifying the structure and facilitating production.

[0073] The first sunken surface 10a can expand the size of the air hood cavity along the thickness direction of the rear plate 10, thereby facilitating the installation of the fan 30. The connection between the second sunken surface 10b and the non-recessed area of the plane is equivalent to forming a reinforcing rib, thereby strengthening the strength of the rear plate 10.

[0074] In one embodiment, please refer to Figures 1 to 4 The side wall of the first wind shield 21 includes a first sub-section 211, and the first sub-section 211 constitutes part of the cavity wall of the wind shield cavity.

[0075] Exemplarily, the first subsection 211 , the rear plate 10 and the end wall of the first wind shield 21 enclose and form at least a portion of the wind shield cavity.

[0076] For example, the first sub-segment 211 is in an arc-shaped structure. More specifically, in the embodiments of the present application, the first sub-segment 211 is in an Archimedean spiral structure.

[0077] The first sub-segment 211 is provided with a notch 211a, and the transition surface 10c includes a first extension surface 10ca. The other parts of the first sub-segment 211 except the notch 211a are sealed with the first sunken surface 10a, and the surface surrounding the notch 211a is sealed with the first extension surface 10ca and the second sunken surface 10b.

[0078] At least a portion of the side wall of the first wind hood 21 has a continuous Archimedean spiral structure. This portion of the side wall of the first wind hood 21 can be understood as the first sub-segment 211, and the rest of the side wall of the first wind hood 21 except the first sub-segment 211 is the second sub-segment 212.

[0079] The first sub-section 211, the rear plate 10 and the end wall of the first wind hood 21 can be enclosed to form the entire wind hood cavity; or a part of the wind hood cavity can be enclosed to form the other part of the wind hood cavity, and the other part of the wind hood cavity is enclosed to form between the second sub-section 212, the rear plate 10 and the end wall of the first wind hood 21.

[0080] An air outlet cavity is formed between the second subsection 212, the rear plate 10 and the end wall of the first air cover 21. Under the action of the fan 30, the air flow in the clothes drying drum can flow into the air cover cavity and flow out through the air outlet cavity.

[0081] Please refer to Figure 1 and Figure 12 The first sub-segment 211, except for the notch 211a, is sealed with the first sunken surface 10a, and the surface surrounding the notch 211a is sealed with the first extension surface 10ca and the second sunken surface 10b. Figure 12 As shown at F in the figure, it should be noted that the specific method of "sealing fit" is not limited. For example, the sealing fit between the two can be achieved by welding, or by using a sealant or sealing member (such as sealing rubber, sealing silicone, etc.) to achieve the sealing between the two.

[0082] Generally speaking, in order to improve the compactness of the clothing processing equipment, the outer contour line of the first sunken surface 10a will match the contour line of the side wall of the first air hood 21, that is, a part of the transition surface 10c will cooperate with the first sub-segment 211, and this part of the transition surface 10c will also extend along the Archimedean spiral, so that the cavity wall of the air hood cavity has a continuous Archimedean spiral structure, and the Archimedean spiral structure of the cavity wall of the air hood cavity will not be destroyed at any position in the thickness direction of the rear plate 10.

[0083] However, due to the large size restrictions on the size of the clothes processing equipment, such as the height direction or the horizontal direction. Figure 13As shown, since the second barrel 300 needs to rotate at high speed, sufficient space must be ensured between the second sunken surface 10b and the second barrel 300. When the height dimension of the laundry processing device is limited, the outer edge of the second sunken surface 10b cannot continue to expand outward. Moreover, when other components need to be installed on the second sunken surface 10b, due to the installation space requirements, the portion of the transition surface 10c that cooperates with the first sub-segment 211 cannot completely extend along the Archimedean spiral. The area of the portion of the transition surface 10c that cooperates with the first sub-segment 211 that does not extend along the Archimedean spiral is the first extension surface 10ca. In other words, the first extension surface 10ca is not a structure that extends along the Archimedean spiral. Therefore, during the assembly process of the first air hood 21, the first sub-segment 211 will interfere with the first extension surface 10ca.

[0084] To eliminate this interference, one solution in the related art is to reduce the volute tongue gap or the expansion speed of the Archimedean spiral of the first sub-segment. This solution reduces the size of the wind shield cavity. The fan usually needs to be designed with a smaller diameter to match the smaller wind shield cavity. The air volume of the system is low, making it difficult to meet the design target. Another solution, such as Figure 11 As shown at F' in the middle, the first sub-segment 211' is cut to avoid the risk of interference. After the first wind hood 21' and the rear plate 10' are installed, the Archimedean spiral structure of the wind hood cavity wall is completely destroyed. When the fan is running, turbulence and pressure waves will increase, resulting in increased noise, poor air noise conditions, low fan efficiency, low air volume, and large fluctuations in air flow pressure at the cutting point. In the long run, this will shorten the service life of the fan.

[0085] In the volute assembly of this embodiment, the first sub-segment 211 has a notch 211a. The remaining portions of the first sub-segment 211, excluding the notch 211a, are sealed against the first sunken surface 10a. The surface surrounding the notch 211a also seals against the first extension surface 10ca and the second sunken surface 10b. The notch 211a eliminates interference between the first sub-segment 211 and the first extension surface 10ca. The Archimedean spiral structure of the hood cavity wall is only affected at the notch 211a. The hood cavity wall maintains the Archimedean spiral structure in areas other than the notch 211a. This allows more airflow near the fan 30 to flow along the direction of the Archimedean spiral while maximizing the radial dimension of the hood cavity. This improves flow field stability, reducing turbulence and pressure waves during fan 30 operation, thereby reducing noise and extending the service life of the fan 30. Furthermore, it improves the efficiency and air volume of the fan 30. That is to say, the volute assembly of this embodiment can reduce the influence of the size limitation of the clothes processing equipment on the contour line of the air hood cavity wall of the volute assembly.

[0086] It can be understood that the volute assembly of the embodiment of the present application can reduce the degree of damage to the Archimedean spiral structure of the hood cavity wall as much as possible without changing the diameter of the fan 30 as much as possible when the clothing processing device is subject to large size restrictions.

[0087] See also Figure 1 In one embodiment, the rear cover assembly 20 further includes a second air cover 22. The second air cover 22 is disposed on the second sunken surface 10b and is surrounded by the rear plate 10 to form a receiving space. The first air cover 21 is located in the receiving space.

[0088] The specific shape of the second wind shield 22 is not limited. For example, the second wind shield 22 matches the shape of the first wind shield 21, that is, the second wind shield 22 can just cover the first wind shield 21, so as to help control the size of the rear cover assembly 20.

[0089] By providing the second air hood 22, on the one hand, the second air hood 22 has a certain sound insulation effect, which is beneficial to reducing the noise of the clothing processing equipment. On the other hand, the second air hood 22 can further seal the first air hood 21, and the seal between the first air hood 21 and the rear plate 10 is not easily affected by external interference, which is beneficial to improving the sealing performance of the air hood cavity and improving the reliability of the clothing processing equipment.

[0090] There is no limitation on the installation method of the second hood 22 on the rear plate 10. For example, the second hood 22 is provided with a flange, and fasteners such as screws penetrate the flange and the rear plate 10 to achieve the installation of the second hood 22 on the rear plate 10.

[0091] A sound insulation material such as silent felt may be provided between the second air cover 22 and the first air cover 21 to further reduce the noise of the clothing processing device.

[0092] The second air cover 22 may be closely attached to the rear plate 10 , and the first air cover 21 and the rear plate 10 may be connected without a connector, that is, sealed by the second air cover 22 .

[0093] In one embodiment, please refer to Figure 2 、 Figure 7 、 Figure 8 、 Figure 12 and Figure 13 The bottom side area of the transition surface 10c along the height direction of the volute assembly is the first extension surface 10ca, and the notch 211a is located at the bottom of the first wind cover 21 along the height direction of the volute assembly.

[0094] It should be noted that, generally speaking, the size of the clothes processing equipment is subject to greater restrictions in the height direction. Figure 13As shown, the clothing processing device includes a first barrel (not shown) and a second barrel 300. Along the height direction of the clothing processing device, the first barrel is arranged above the second barrel 300, and the rear plate 10 is arranged on one side of the axial direction of the first barrel. Because the second barrel 300 needs to rotate at high speed, the lower edge of the second sunken surface 10b needs to maintain a safe distance from the second barrel 300 and cannot continue to extend downward. As a result, the area below the transition surface 10c cannot extend downward either. As a result, the first air hood 21 and the second sunken surface 10b are prone to interference on the bottom side of the volute assembly in the height direction of the clothing processing device. In this embodiment, the first barrel is a clothes drying drum.

[0095] Of course, if the laundry processing device only includes the second barrel 300 and the rear plate 10 is disposed on one side of the second barrel 300 in the axial direction; or if the laundry processing device includes the first barrel and the second barrel 300 and the rear plate 10 is disposed on one side of the second barrel 300 in the axial direction. It is understood that the laundry processing device needs to be placed in a position for use, for example, on the ground. Due to the limitations of the ground, the volute assembly will also be at the bottom side of the height direction of the laundry processing device, and the first air cover 21 and the second sunken surface 10b will easily interfere with each other. In this embodiment, the second barrel 300 is a drying drum.

[0096] Therefore, by arranging the first extension surface 10ca and the notch 211a at the bottom of the volute assembly in the height direction, the height of the laundry processing device can be effectively controlled while maintaining the integrity of the Archimedean spiral structure of the air hood cavity. With the height of the laundry processing device controlled, it is convenient for users to take clothes in and out.

[0097] In other embodiments, the first extension surface 10ca and the notch 211a may also be located in other directions of the volute assembly, such as in the horizontal direction of the volute assembly. In other words, the location of the first extension surface 10ca and the notch 211a may be reasonably designed based on the size constraints of the clothing processing device.

[0098] It should be noted that the "horizontal direction" in the embodiment of the present application should be understood based on the orientation of the clothing processing device in normal use. Figure 2 shown.

[0099] In one embodiment, please refer to Figure 1 and Figure 2 , projected on a plane perpendicular to the first direction, the projections of the two ends of the notch 211a are respectively located on the projections of the two ends of the first extension surface 10ca, wherein the first direction is a direction parallel to the perpendicular bisector of the line connecting the two ends of the first extension surface 10ca.

[0100] For example, see Figure 2When the first extension surface 10ca is located at the bottom of the volute assembly in the height direction, the mid-perpendicular line overlaps with the AA section line, that is, the first direction is parallel to the height direction of the volute assembly.

[0101] Of course, it is understandable that when the first extension surface 10ca and the notch 211a are located on one side of the volute assembly in the horizontal direction, the mid-perpendicular line is parallel to the horizontal direction.

[0102] That is to say, after the positions of the two ends of the first extension surface 10ca are determined, the two ends of the notch 211a can overlap with the two ends of the first extension surface 10ca, so that the expansion speed of the Archimedean spiral structure of the first sub-segment 211 can be increased as much as possible, so that the radial dimension of the wind hood cavity can be larger, so as to facilitate the installation of the fan 30.

[0103] In one embodiment, please refer to Figure 2 The first extension surface 10ca includes a straight extension segment and two curved extension segments, and the two curved extension segments are respectively located at two ends of the straight extension segment.

[0104] It should be noted that the straight extension segment only refers to a segment whose extension direction remains unchanged. The straight extension segment can be a plane or a curved surface.

[0105] It can be understood that after the two ends of the straight extension section are determined, along the height direction of the volute assembly, since the outer edge of the second sunken surface 10b cannot extend downward, the middle area of the first extension surface 10ca cannot protrude downward along the height direction of the volute assembly, and can only protrude upward along the height direction of the volute assembly or extend in a straight line. Compared with the upward protruding scheme, the first extension surface 10ca in this area appears as a straight extension section, the radial dimension of the wind hood cavity is relatively larger, and no protruding structure will be formed on the cavity wall of the wind hood cavity, which is beneficial to improving the flow field.

[0106] Of course, in other embodiments, the first extension surface 10ca may also extend in a curved shape as a whole, and the notch 211a may be designed to match accordingly, which can also meet the assembly requirements.

[0107] In one embodiment, please refer to Figure 2 The bottom area of the transition surface 10c along the height direction of the volute assembly is the first extension surface 10ca, the notch 211a is located at the bottom of the first wind cover 21 along the height direction of the volute assembly, and the extension direction of the first extension surface 10ca is perpendicular to the height direction of the clothing processing device.

[0108] It can be understood that the first extension surface 10ca constitutes a part of the wall of the air hood cavity.

[0109] Specifically, see Figure 2 and Figure 13The opposite ends of the first extension surface 10ca are at the same height, and the first extension surface 10ca will not tilt upward, so that the size of the wind cover cavity can be expanded as much as possible, which is convenient for the installation of the fan 30. The first extension surface 10ca will not tilt downward, so as to ensure that there is sufficient installation space between the first extension surface 10ca and the outer edge of the second sunken surface 10b, which is convenient for the overlap of the surface where the notch 211a is located or the installation of the second wind cover 22.

[0110] In one embodiment, please refer to Figures 2 to 4 The dimension L3 between the first extension surface 10ca and the outer edge of the second sunken surface 10b, along the perpendicular midline of the line connecting the two ends of the first extension surface 10ca, ranges from 15 mm to 30 mm. For example, the dimension L3 may be 15 mm, 16.5 mm, 18 mm, 19.5 mm, 21 mm, 22.5 mm, 24 mm, 25.5 mm, 27 mm, 28.5 mm, 30 mm, etc.

[0111] Specifically, due to the limited size of the clothes processing device, it is inconvenient to expand the outer edge of the second sunken surface 10b, so the first extension surface 10ca can be slightly moved to the side away from the outer edge of the second sunken surface 10b (for example Figure 2 As shown, when the first extension surface 10ca is located at the bottom of the volute assembly in the height direction, the first extension surface 10ca can be slightly lifted up), so that L3 can be controlled within 15mm to 30mm.

[0112] It should be noted that in the embodiments of the present application, the unit referred to by “mm” is millimeter.

[0113] exist Figure 2 In the illustrated embodiment, the first extension surface 10ca is located at the bottom of the volute assembly in the height direction and extends along the horizontal direction of the volute assembly, with the mid-perpendicular line overlapping the AA section line.

[0114] Since the first extension surface 10ca and the outer edge of the second sunken surface 10b need to overlap the surface where the notch 211a is located and the installation of other components (such as the second wind cover 22), sufficient size needs to be reserved to meet the installation requirements.

[0115] It can be understood that the first sub-segment 211 is an Archimedean spiral structure. After the first sub-segment 211 is matched with the first extension surface 10ca, a part of the surface forming the notch 211a (i.e., the first connecting surface 211aa described below) is sealed with the second sunken surface 10b near the mid-perpendicular line of the first extension surface 10ca. Therefore, the installation space requirement at this position is relatively large.

[0116] By controlling L3 between 15mm and 30mm, on the one hand, the value of L3 will not be less than 15mm, so that the second sunken surface 10b has sufficient installation space, which is conducive to the installation of the first wind hood 21 and the second wind hood 22; on the other hand, the value of L3 will not be greater than 30mm, so that after the first extension surface 10ca is set to the side away from the outer edge of the second sunken surface 10b, the influence of the first extension surface 10ca on the radial size of the wind hood cavity can also be controlled within a reasonable range.

[0117] In one embodiment, please refer to Figures 2 to 4 The distance between the first extension surface 10ca and the outer edge of the second sunken surface 10b along the perpendicular midline of the line connecting the two ends of the first extension surface 10ca ranges from 18 mm to 25 mm. For example, it can be 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, etc.

[0118] By controlling L3 between 18mm and 25mm, the dimension L3 between the first extension surface 10ca and the outer edge of the second sunken surface 10b is more reasonable, thereby meeting the installation requirements of the first wind hood 21 and the second wind hood 22, and minimizing the influence of the first extension surface 10ca on the radial size of the wind hood cavity.

[0119] In one embodiment, please refer to Figures 5 to 10 The surfaces surrounding the gap 211a include a first connecting surface 211aa that is sealed with the second sunken surface 10b, a second connecting surface 211ab and a third connecting surface 211ac that are respectively sealed with the first extension surface 10ca, and the second connecting surface 211ab and the third connecting surface 211ac are connected to the two ends of the first connecting surface 211aa; the first extension surface 10ca is a curved surface, the first connecting surface 211aa is a plane, and the second connecting surface 211ab and the third connecting surface 211ac are both curved surfaces.

[0120] The first connecting surface 211aa is a surface that cooperates with the second sunken surface 10b. Since the second sunken surface 10b is substantially planar, the first connecting surface 211aa is a planar surface, which facilitates sealing and fitting between the first connecting surface 211aa and the second sunken surface 10b.

[0121] The second connecting surface 211ab and the third connecting surface 211ac are surfaces that cooperate with the first extending surface 10ca.

[0122] The first extension surface 10ca is part of the transition surface 10c and generally has a certain curvature, thereby improving the strength of the rear plate 10. In this way, the second connecting surface 211ab and the third connecting surface 211ac are curved surfaces and match the curvature of the first extension surface 10ca, thereby facilitating the second connecting surface 211ab and the third connecting surface 211ac to achieve sealing cooperation with the first extension surface 10ca respectively.

[0123] In other embodiments, when the first extension surface 10ca is planar, the second connecting surface 211ab and the third connecting surface 211ac can also be planar. Of course, both can also be curved surfaces. In this case, when the second connecting surface 211ab and the third connecting surface 211ac are sealed with the planar first extension surface 10ca, a sealing material needs to be filled to achieve sealing.

[0124] In one embodiment, please refer to Figures 3 to 6 Along the thickness direction of the rear plate 10, the ratio of the dimension L4 at both ends of the notch 211a to the dimension L5 at both ends of the first sub-segment 211 is in the range of 1 / 5 to 1 / 3. For example, it can be 1 / 5, 2 / 9, 1 / 4, 2 / 7, 1 / 3, etc.

[0125] It can be understood that L4 is equal to the size of the transition surface 10c at both ends along the thickness direction of the rear plate 10. Specifically, Figure 4 As shown, the sinking dimension L1 of the first sunken surface 10a is L4+L2.

[0126] By controlling the ratio of the dimension L4 at both ends of the notch 211a to the dimension L5 at both ends of the first sub-segment 211 between 1 / 5 and 1 / 3, on the one hand, the ratio will not be less than 1 / 5, so that the proportion of the notch 211a on the first sub-segment 211 along the thickness direction of the rear plate 10 will not be too small, that is, along the thickness direction of the rear plate 10, the ratio of the dimensions at both ends of the transition surface 10c to the dimensions at both ends of the wind hood cavity will not be too small, so that when the fan 30 is running, the rear plate 10 can bear a certain strength, and the reliability of the volute assembly is better; on the other hand, the ratio will not be greater than 1 / 3, so that along the thickness direction of the rear plate 10, the proportion of the notch 211a on the first sub-segment 211 will not be too large, so that after the rear cover and the rear plate 10 are assembled, the degree of destruction of the Archimedean spiral structure of the wind hood cavity wall is relatively controllable, which is conducive to reducing the influence of the notch 211a on the profile of the wind hood cavity wall.

[0127] In one embodiment, please refer to Figures 3 to 6 Along the thickness direction of the rear plate 10, the size L4 of the two ends of the notch 211a ranges from 12 mm to 25 mm, for example, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 25 mm, etc.

[0128] By controlling the range of L4 between 12mm and 25mm, on the one hand, the value of L4 will not be less than 12mm, so that the sinking size L4 of the first sunken surface 10a is relatively reasonable. In this way, the length of the surface surrounding the notch 211a and the first extension surface 10ca is longer, which is conducive to achieving a good sealing relationship between the two; on the other hand, the value of L4 will not be greater than 25mm, so that the degree of damage to the first sub-segment 211 caused by the notch 211a can be controlled within a more reasonable range, which is conducive to reducing the degree of damage to the Archimedean spiral structure of the wall of the wind hood cavity.

[0129] In one embodiment, please refer to Figures 3 to 6 Along the thickness direction of the rear plate 10, the size L4 of the two ends of the notch 211a ranges from 15 mm to 18 mm, for example, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, etc.

[0130] It can be understood that the dimension L4 at both ends of the notch 211a is controlled between 15mm and 18mm, so that the degree of damage to the Archimedean spiral structure of the wind hood cavity wall can be slowed down as much as possible while ensuring the sealing connection strength between the surface surrounding the notch 211a and the first extension surface 10ca.

[0131] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A volute assembly for a clothes processing device, characterized in that: The volute assembly comprises: A rear plate, the rear plate comprising a rear plate body and a fan shield mounting area provided on the rear plate body, the fan shield mounting area being formed by a concave / convex portion of the rear plate; A rear cover assembly includes a first air cover, the first air cover being connected to the rear plate to form an air cover cavity, the first air cover being partially disposed over the air cover mounting area, and projected onto a plane perpendicular to the thickness direction of the rear plate, at least a portion of the projection of the air cover cavity exceeds the air cover mounting area; The fan is located on the plane where the fan cover installation area is located.

2. The volute assembly according to claim 1, characterized in that The rear plate is provided with a first sunken surface, a second sunken surface, and a transition surface along the thickness direction. The second sunken surface is arranged around the periphery of the first sunken surface and the two are connected by the transition surface. Along the thickness direction of the rear plate, the sunken dimension of the first sunken surface is greater than the sunken dimension of the second sunken surface. The wind shield installation area is located on the first sunken surface and is projected on a plane perpendicular to the thickness direction of the rear plate. The part of the projection of the wind shield cavity that exceeds the wind shield installation area has an overlapping area with the projection of the second sunken surface.

3. The volute assembly according to claim 2, characterized in that The side wall of the first wind hood includes a first sub-section, which constitutes part of the cavity wall of the wind hood cavity. A notch is provided on the first sub-section, and the transition surface includes a first extension surface. The other parts of the first sub-section except the notch are sealed with the first sunken surface, and the surface surrounding the notch is sealed with the first extension surface and the second sunken surface.

4. The volute assembly according to claim 3, characterized in that The bottom side area of the transition surface along the height direction of the volute assembly is the first extension surface, and the notch is located at the bottom of the first wind cover along the height direction of the volute assembly.

5. The volute assembly according to claim 3, characterized in that Projected on a plane perpendicular to the first direction, the projections of the two ends of the notch are respectively located on the projections of the two ends of the first extension surface, wherein the first direction is a direction parallel to the perpendicular bisector of the line connecting the two ends of the first extension surface.

6. The volute assembly according to claim 3, characterized in that The first extension surface includes a straight extension segment and two curved extension segments, and the two curved extension segments are respectively located at two ends of the straight extension segment.

7. The volute assembly according to claim 6, characterized in that The bottom side area of the transition surface along the height direction of the volute assembly is the first extension surface, the notch is located at the bottom of the first wind cover along the height direction of the volute assembly, and the extension direction of the first extension surface is perpendicular to the height direction of the clothing processing device.

8. The volute assembly according to claim 3, wherein: Along the direction of the perpendicular midline of the line connecting the two ends of the first extension surface, the size between the first extension surface and the outer edge of the second sunken surface ranges from 15 mm to 30 mm.

9. The volute assembly according to claim 3, characterized in that Along the direction of the perpendicular midline of the line connecting the two ends of the first extension surface, the size between the first extension surface and the outer edge of the second sunken surface ranges from 18 mm to 25 mm.

10. The volute assembly according to claim 3, wherein: The surface surrounding the gap includes a first connecting surface sealed with the second sunken surface, a second connecting surface and a third connecting surface respectively sealed with the first extending surface, and the second connecting surface and the third connecting surface are connected to both ends of the first connecting surface; The first extending surface is a curved surface, the first connecting surface is a plane, and the second connecting surface and the third connecting surface are both curved surfaces.

11. The volute assembly according to claim 3, wherein: Along the thickness direction of the rear plate, a ratio of a size at both ends of the notch to a size at both ends of the first subsegment ranges from 1 / 5 to 1 / 3.

12. The volute assembly according to claim 3, wherein: Along the thickness direction of the rear plate, the sizes of the two ends of the notch range from 12 mm to 25 mm.

13. The volute assembly according to claim 3, wherein: Along the thickness direction of the rear plate, the sizes of the two ends of the notch range from 15 mm to 18 mm.

14. The volute assembly according to claim 2, wherein: The rear cover assembly further includes a second air cover, which is disposed on the second sunken surface and surrounds the rear plate to form a receiving space, and the first air cover is located in the receiving space.

15. The volute assembly according to claim 1, wherein: Along the height direction of the volute assembly, the cavity wall on the bottom side of the wind cover cavity is arc-shaped.

16. A clothes processing device, characterized in that: The volute assembly comprises the volute assembly according to any one of claims 1 to 15.

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