Fan shell, drying tunnel assembly and clothes processing equipment

Abstract

The utility model provides a fan shell, a drying tunnel assembly and clothes processing equipment. The fan shell comprises a volute part and a flow guide part. The volute part is provided with an air inlet, and the flow guide part provided with a flow guide channel is connected to the peripheral side, in the first direction, of the volute part. The two opposite sides, in the axial direction of the volute part, of the flow guide part are provided with first side walls, at least one first side wall comprises a first arc section and a second arc section in the direction away from the volute part, the first arc section and the second arc section are in smooth connection, and the bending directions of the first arc section and the second arc section are opposite. The first direction intersects with the axial direction of the volute part. According to the fan shell provided by the invention, the formation of turbulent flow or vortex during air flowing can be reduced, the energy loss in the air flow movement process is reduced, and the air supply efficiency of a fan is improved.

Description

Technical Field

[0001] The present application relates to the field of clothing processing, and in particular to a fan housing, a drying tunnel assembly, and clothing processing equipment. Background Art

[0002] In the related art, the fan housing used in the dryer is deflected multiple times along the airflow direction to discharge the airflow from the air outlet. However, turbulence and even vortices are easily formed at the deflection point of the fan housing, causing large wind loss and affecting the working efficiency of the dryer. Utility Model Content

[0003] In view of this, the embodiments of the present application are intended to provide a fan housing, a drying tunnel assembly and a clothes processing device. The airflow in the fan housing is relatively stable, and the fan has good air supply efficiency.

[0004] A first aspect of an embodiment of the present application provides a fan housing, comprising:

[0005] A volute portion, wherein the volute portion has an air inlet;

[0006] A flow guide portion having a flow guide channel, connected to the circumferential side of the volute portion along the first direction;

[0007] The guide channel has first side walls on opposite sides of the axial direction of the volute portion, and at least one of the first side walls includes a first arc segment and a second arc segment in a direction away from the volute portion. The first arc segment and the second arc segment are smoothly connected, and the bending directions of the two are opposite; the first direction intersects with the axial direction of the volute portion.

[0008] In some embodiments, the center of curvature of the first arc segment is located on a side of the first side wall away from the guide channel, and the center of curvature of the second arc segment is located on a side of the first side wall facing the guide channel.

[0009] In some embodiments, the cross-sectional shape of the first side wall at any position in the first direction is the same, wherein the cross-sectional shape is perpendicular to the first direction.

[0010] In some embodiments, in a plane projection perpendicular to the first direction, the inner surface of the first side wall is projected as a curve.

[0011] In some embodiments, the first arc segment includes at least a first circular arc segment, the second arc segment includes at least a second circular arc segment, and the first circular arc segment and the second circular arc segment are smoothly connected.

[0012] In some embodiments, the curvature radius of the first arc segment is 100-180 mm.

[0013] In some embodiments, the end of the first side wall along the airflow direction also includes a connecting straight segment. Taking the plane where the connecting straight segment is located as a reference plane, along the airflow direction, the angle between the tangent of the first arc segment and the reference plane gradually increases, and the angle between the tangent of the second arc segment and the reference plane gradually decreases.

[0014] In some embodiments, the guide channel has a second side wall along the first direction and away from the volute portion, and the end of the first side wall along the airflow direction further includes a connecting straight section;

[0015] Along the direction away from the volute portion, the cross-sectional area of ​​the second side wall gradually increases, wherein the cross-sectional area of ​​the second side wall is perpendicular to the extending direction of the connecting straight section.

[0016] In some embodiments, the guide channel includes a second side wall and a smooth transition connection portion, the second side wall is located on one side of the guide channel along the first direction and away from the volute portion, and the opposite ends of the smooth transition connection portion along the first direction are respectively connected to the first side wall and the second side wall.

[0017] In some embodiments, the air inlet is disposed on the axial first side of the volute portion; and / or the air guide portion is deflected toward the axial first side of the volute portion.

[0018] The fan housing provided in the embodiment of the present application can reduce the formation of turbulence or vortices during gas flow, reduce energy loss during air flow movement, and improve the air supply efficiency of the fan.

[0019] A second aspect of the embodiment of the present application provides a drying tunnel assembly, comprising:

[0020] Upper cover;

[0021] A lower cover, buckled with the upper cover to form an air duct cavity, wherein the air duct cavity has an air outlet; and

[0022] In the fan casing described in any embodiment of the present application, the air outlet is connected to the air inlet of the volute part.

[0023] In some embodiments, the fan housing includes a main body and an end cover, the air inlet is arranged on a first axial side of the main body, and the end cover is buckled on a second axial side of the main body; the lower cover and the main body are an integral component.

[0024] The drying tunnel assembly provided in the embodiment of the present application enables the gas in the air duct cavity to be efficiently delivered through the fan housing under the continuous operation of the fan impeller.

[0025] A third aspect of an embodiment of the present application provides a clothes processing device, comprising:

[0026] A drum assembly, the drum assembly having a clothes processing chamber;

[0027] heat exchange assembly; and

[0028] In the drying duct assembly described in any embodiment of the present application, the heat exchange assembly is arranged in the air duct cavity, and the guide portion is used to guide the airflow to the clothing processing cavity.

[0029] In some embodiments, the drying tunnel assembly is arranged above the drum assembly; the clothing processing equipment includes a door sealing ring, the door sealing ring is formed with a return air port connected to the clothing processing chamber, and the guide part is connected to the return air port. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of a fan housing and a lower cover in one embodiment of the present application;

[0031] Figure 2 for Figure 1 A magnified schematic diagram of the structure in the middle;

[0032] Figure 3 for Figure 1 Side view of the middle structure;

[0033] Figure 4 for Figure 1 A top view of the structure in the middle;

[0034] Figure 5 for Figure 1 Structural diagram of the structure in the middle;

[0035] Figure 6 A schematic diagram of a partial structure of a clothes processing device in one embodiment of the present application;

[0036] Figure 7 A schematic diagram of a partial structure of a clothes processing device in one embodiment of the present application;

[0037] Figure 8 This is a schematic diagram of the partial structure of a clothing processing device in one embodiment of the present application.

[0038] Description of Reference Numerals

[0039] 10. Fan casing; 101. Main body; 102. End cover; 11. Volute; 11a. Air inlet; 12. Guide; 12a. Guide channel; 121. First side wall; 122. Second side wall; 123. First arc segment; 124. Second arc segment; 125. Connecting straight segment; 126. First circular arc segment; 127. Second circular arc segment; 128. Straight cylinder; 129. Smooth transition connecting portion; 20. Upper cover; 30. Lower cover; 20a. Air duct cavity; 30a. Air outlet; 100. Drying tunnel assembly; 200. Cylinder assembly; 200a. Clothes processing cavity; 300. Heat exchange assembly; 400. Door seal; 400a. Return air outlet. DETAILED DESCRIPTION

[0040] The following is a further detailed description of the implementation of the present application in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application.

[0041] In the description of the embodiments of the present application, it should be noted that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0042] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0043] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “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”, and “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.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means 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 embodiment of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0045] In a first aspect, an embodiment of the present application provides a fan housing 10. Figure 1 The fan housing 10 includes a volute portion 11 and a flow guide portion 12. The volute portion 11 has an air inlet 11a.

[0046] It can be understood that the volute portion 11 is used to accommodate an impeller.

[0047] In some embodiments, the air inlet 11a is disposed on one side of the axial direction S of the volute 11. The axial direction S mentioned in the embodiments of the present application is based on the axial direction of the impeller. The rotation of the impeller causes the airflow to enter the volute 11 from the air inlet 11a along the axial direction S and to be discharged along the circumferential direction of the volute 11. That is, the volute 11 and the impeller constitute components of a centrifugal fan.

[0048] See also Figure 6 The guide portion 12 has a guide channel 12a. The guide portion 12 is connected to the circumferential side of the volute portion 11 along the first direction R, and is used to change the flow direction of the airflow discharged from the volute portion 11. The first direction R intersects with the axial direction S, and the arrows in the accompanying drawings are only for reference. In the embodiment of the present application, the first direction R and the axial direction S are perpendicular to each other as an example for description.

[0049] For example, see Figure 3 and Figure 4 In one embodiment, the air guide portion 12 is deflected toward a first side of the axial direction S of the volute portion 11, that is, the air guide portion 12 is deflected toward a side where the air inlet 11a is located.

[0050] The first direction R may be understood as the front-to-back direction of the laundry processing device described below.

[0051] See also Figure 1 and Figure 2 The guide portion 12 has first side walls 121 on opposite sides of the axial direction S of the volute portion 11 , and at least one first side wall 121 includes a first arc segment 123 and a second arc segment 124 in a direction away from the volute portion 11 .

[0052] The gas entering the volute portion 11 along the axial direction S is discharged from the circumference of the volute portion 11 and enters the guide channel 12a under the action of the impeller. Since the guide portion 12 changes the flow direction of the airflow, the airflow entering the guide channel 12a hits the first side wall 121 head-on and flows toward the end of the guide channel 12a under the guidance of the first side wall 121.

[0053] See also Figure 1 The first side wall 121 includes a first arc segment 123 and a second arc segment 124 along a direction away from the volute portion 11. The first arc segment 123 and the second arc segment 124 are smoothly connected, and the bending directions of the two are opposite, that is, the second arc segment 124 is connected to the end of the first arc segment 123 away from the volute portion 11.

[0054] It should be noted that the first arc segment 123 refers to the first side wall 121 having a curved feature in this length region, and is not limited to being an absolute arc shape. The second arc segment 124 refers to the first side wall 121 having a curved feature in this length region, and is not limited to being an absolute arc shape.

[0055] The above-mentioned smooth connection refers to that the surface of the connection between the first arc segment 123 and the second arc segment 124 is smooth and slippery. In other words, there is no obvious spoiler structure at the connection between the first arc segment 123 and the second arc segment 124.

[0056] The first arc segment 123 and the second arc segment 124 with opposite bending directions enable the gas in the guide channel 12a to complete the direction deflection without losing too much energy, thereby reducing the impact on the air supply efficiency of the fan.

[0057] The fan housing 10 of the embodiment of the present application has a first side wall 121 that is streamlined as a whole, including one first side wall 121 that is streamlined, or the first side walls 121 on two opposite sides that are streamlined. The flow velocity of the airflow at various points on the surface of the first side wall 121 is relatively small, thereby reducing the formation of turbulence or vortices, reducing energy loss during airflow movement, and improving the air supply efficiency of the fan.

[0058] For some examples, see Figure 1 The center of curvature O1 of the first arc segment 123 is located on the side of the first side wall 121 away from the flow guiding channel 12a. That is, the first arc segment 123 arches toward the inner side of the flow guiding channel 12a. The center of curvature O2 of the second arc segment 124 is located on the side of the first side wall 121 toward the flow guiding channel 12a. That is, the second arc segment 124 arches toward the outer side of the flow guiding channel 12a.

[0059] The center of curvature mentioned above refers to the center position of the curvature circle at any position of the first arc segment 123 (or the second arc segment 124 ), and the curvature radii of the curvature circles at different positions may be the same or different.

[0060] In this way, the flow guide passage 12 a allows the supply air to flow smoothly in a direction away from the volute portion 11 .

[0061] For some examples, see Figure 1 The end of the first side wall 121 along the airflow direction also includes a connecting straight section 125. The end of the air guide 12 close to the air outlet side has a straight tube portion 128, which is used to connect with other structures (such as the return air port 400a described below), and the connecting straight section 125 is a component of the straight tube portion 128.

[0062] The plane where the connecting straight section 125 is located is taken as the reference plane (reference Figure 1 As shown in the dot-dash line B), along the airflow direction, the angle between the tangent of the first arc segment 123 and the reference surface gradually increases, and the angle between the tangent of the second arc segment 124 and the reference surface gradually decreases.

[0063] That is, the final air supply direction of the fan housing 10 is along the flow direction of the connecting straight section 125 , and under the deflection effect of the first arc section 123 and the second arc section 124 , the flow direction of the airflow gradually approaches the preset final air supply direction.

[0064] See also Figure 3 The flow guide channel 12a has a second side wall 122 along the first direction R and away from the volute portion 11. In some embodiments, see Figure 1 , along the direction away from the volute portion 11, the cross-sectional area of ​​the second side wall 122 gradually increases, and the cross-sectional area of ​​the second side wall 122 is perpendicular to the extending direction of the connecting straight section 125, such as Figure 1 The center line C in the figure indicates the cutting position.

[0065] That is, along the flow direction of the airflow, the flow diameter of the flow guide channel 12 a gradually increases, so that the flow rate of the airflow is less affected when the airflow is deflected in the flow guide portion 12 .

[0066] For some examples, see Figure 2 The flow guide channel 12a further includes a smooth transition connection portion 129, whose opposite ends along the first direction R are respectively connected to the first side wall 121 and the second side wall 122. The formation method of the smooth transition connection portion 129 includes but is not limited to: performing rounding or chamfering at the connection between the first side wall 121 and the second side wall 122. In this way, the edges and corners of the components can be reduced and stress concentration can be reduced.

[0067] For some examples, see Figure 1 The cross-sectional shapes of the first side wall 121 of the fan housing 10 at any position along the first direction R are the same. It can be understood that the first side wall 121 is a thin plate member with equal wall thickness, and the shape characteristics of its inner surface are the same as those of its outer surface.

[0068] The shape of the first side wall 121 can be understood as: Figure 1 The first side wall 121 is curved in a first direction R (perpendicular to Figure 1 It should be noted that the description here is for the convenience of understanding the shape of the first side wall 121, and does not specifically refer to the processing technology and processing sequence of the first side wall 121.

[0069] In this embodiment, the manufacturing requirements for the first side wall 121 can be reduced, the complexity of the molding die can be reduced, and the manufacturing and molding of the first side wall 121 can be facilitated. In addition, when the airflow flows along the inner surface of the first side wall 121, there will be no obvious flow velocity difference at different positions of the airflow along the first direction, which is conducive to improving turbulence.

[0070] For some examples, see Figure 1 In the plane projection perpendicular to the first direction R, the inner surface of the first side wall 121 is projected as a curve (thick solid line in the figure). The inner surface of the first side wall 121 can be understood as: Figure 1 The curve of the inner surface of the first side wall 121 is the generatrix, along the first direction R (perpendicular to Figure 1 It should be noted that the description here is for the convenience of understanding the shape of the inner surface of the first side wall 121, and does not specifically refer to the processing technology and processing sequence of the first side wall 121.

[0071] In this embodiment, along the first direction R, the inner surface of the first side wall 121 has no obvious undulations, which is conducive to the smooth flow of air.

[0072] For some examples, see Figure 3 The first arc segment 123 at least includes a first arc segment 126, and the second arc segment 124 at least includes a second arc segment 127. The first arc segment 126 and the second arc segment 127 are smoothly connected. Points O3 and O4 in the figure indicate the center positions of the circles.

[0073] The first arc segment 126 and the second arc segment 127 are both arc-shaped, and have the advantage of being easy to process and manufacture.

[0074] The first arc segment 126 and the second arc segment 127 may be tangent to each other or have colinear tangents.

[0075] In some embodiments, the radius of curvature of the first arc segment 126 is 100 to 180 mm (millimeter), for example 110 mm, 130 mm, 150 mm, 180 mm, etc. In this embodiment, the radius of curvature of the first arc segment 126 has a suitable size and is more suitable for airflow guidance in clothing processing equipment.

[0076] In a second aspect of the present application, a drying tunnel assembly 100 is provided. Figure 5 , Figure 6 , Figure 7 and Figure 8 The drying tunnel assembly 100 includes an upper cover 20, a lower cover 30 and a fan housing 10 of any embodiment of the present application. The upper cover 20 and the lower cover 30 are buckled together to form an air duct cavity 20a, and the air duct cavity 20a has an air outlet 30a, and the air outlet 30a is connected to the air inlet 11a of the fan housing 10.

[0077] As the fan impeller continues to operate, the gas in the air duct cavity 20 a flows sequentially through the air outlet 30 a , the air inlet 11 a , and then into the fan housing 10 .

[0078] For some examples, see Figure 6 and Figure 7 The fan housing 10 includes a main body 101 and an end cover 102, the air inlet 11a is arranged on a first side of the main body 101 along the axial direction S, and the end cover 102 is buckled on a second side of the main body 101 along the axial direction S. That is to say, the volute portion 11 and the air guide portion 12 are one way of dividing the technical features of the structure of the fan housing 10, and the main body 101 and the end cover 102 are another way of dividing the structure of the fan housing 10, and the two ways of dividing are parallel.

[0079] Specifically, in some embodiments, a portion of the volute portion 11 and a portion of the air guide portion 12 constitute the main body 101 , and another portion of the volute portion 11 and another portion of the air guide portion 12 constitute the end cover 102 .

[0080] Exemplarily, the lower cover 30 and the main body 101 are an integral component, for example, an integral injection molded part, so that the sealing performance of the oven assembly 100 can be enhanced and the structural strength can be improved.

[0081] The third aspect of the present application also provides a clothes processing device. Figure 8 The clothes processing device includes a drum assembly 200, a heat exchange assembly 300 and a drying tunnel assembly 100 in any embodiment of the present application.

[0082] The clothes processing device may be a clothes dryer or a washer-dryer.

[0083] The drum assembly 200 has a clothing processing chamber 200a, the heat exchange assembly 300 is disposed in the air duct chamber 20a, and the air guide 12 is used to guide the airflow to the clothing processing chamber 200a. When the air passes through the air duct chamber 20a, after heat exchange with the heat exchange assembly 300, the air is sent into the clothing processing chamber 200a through the end of the air guide 12 of the fan housing 10 to dry the clothes.

[0084] The clothing processing device of the embodiment of the present application has a streamlined structure of the first side wall 121, which has a good smooth flow guiding effect on the airflow, can reduce the turbulence effect, improve the air supply efficiency of the fan housing 10, and then improve the drying efficiency of the clothing processing device.

[0085] For example, in one embodiment, the heat exchange assembly 300 includes an evaporator and a condenser, and the evaporator and the condenser are part of the heat pump system. The evaporator is used to condense and dehumidify the airflow of the drying tunnel assembly 100, and the condenser is used to heat the low-temperature dry airflow after condensation and dehumidification.

[0086] For some examples, see Figure 8 The drying tunnel assembly 100 is arranged above the drum assembly 200. The clothing processing device includes a door seal 400, the door seal 400 is formed with a return air port 400a communicating with the clothing processing chamber 200a, and the air guide 12 is connected to the return air port 400a. The fan housing 10 realizes the deflection of the airflow from the top of the drum assembly 200 and finally sends it downward into the clothing processing chamber 200a.

[0087] Exemplarily, the heat exchange assembly 300 and the fan housing 10 are arranged along the left-right direction of the clothes processing device, the axial direction of the volute 11 is parallel to the left-right direction of the clothes processing device, and the air inlet 11a of the volute 11 faces the air outlet side of the heat exchange assembly 300. In this way, the airflow can enter the volute 11 after passing through the heat exchange assembly 300 without being deflected at a large angle, which can reduce the degree of airflow turbulence at the air inlet 11a, reduce energy loss, and improve the working efficiency of the clothes processing device.

[0088] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fan housing, It is characterized in that include: A volute portion, wherein the volute portion has an air inlet; A flow guide portion having a flow guide channel, connected to the circumferential side of the volute portion along the first direction; The guide channel has first side walls on opposite sides of the axial direction of the volute portion, and at least one of the first side walls includes a first arc segment and a second arc segment in a direction away from the volute portion. The first arc segment and the second arc segment are smoothly connected, and the bending directions of the two are opposite; the first direction intersects with the axial direction of the volute portion.

2. The fan housing according to claim 1, It is characterized in that The center of curvature of the first arc segment is located on a side of the first side wall away from the guide channel, and the center of curvature of the second arc segment is located on a side of the first side wall facing the guide channel.

3. The fan housing according to claim 1, It is characterized in that The cross-sectional shape of the first side wall at any position in the first direction is the same, wherein the cross-sectional shape is perpendicular to the first direction.

4. The fan housing according to claim 1, It is characterized in that In a plane projection perpendicular to the first direction, the inner surface of the first side wall is projected as a curve.

5. The fan housing according to claim 1, It is characterized in that The first arc segment at least includes a first circular arc segment, the second arc segment at least includes a second circular arc segment, and the first circular arc segment and the second circular arc segment are smoothly connected.

6. The fan housing according to claim 5, It is characterized in that The curvature radius of the first arc segment is 100-180 mm.

7. The fan housing according to claim 1, It is characterized in that The end of the first side wall along the airflow direction also includes a connecting straight segment. Taking the plane where the connecting straight segment is located as a reference plane, along the airflow direction, the angle between the tangent of the first arc segment and the reference plane gradually increases, and the angle between the tangent of the second arc segment and the reference plane gradually decreases.

8. The fan housing according to claim 1, It is characterized in that The guide channel has a second side wall along the first direction and on a side away from the volute portion, and the end of the first side wall along the airflow direction also includes a connecting straight section; Along the direction away from the volute portion, the cross-sectional area of ​​the second side wall gradually increases, wherein the cross-sectional area of ​​the second side wall is perpendicular to the extending direction of the connecting straight section.

9. The fan housing according to claim 1, It is characterized in that The guide channel includes a second side wall and a smooth transition connection portion, the second side wall is located on a side of the guide channel along the first direction and away from the volute portion, and the opposite ends of the smooth transition connection portion along the first direction are respectively connected to the first side wall and the second side wall.

10. The fan housing according to any one of claims 1 to 9, It is characterized in that The air inlet is arranged on a first axial side of the volute portion; and / or the air guide portion is deflected toward the first axial side of the volute portion.

11. A drying tunnel component, It is characterized in that include: Upper cover; A lower cover, buckled with the upper cover to form an air duct cavity, wherein the air duct cavity has an air outlet; as well as According to the fan casing according to any one of claims 1 to 10, the air outlet is connected to the air inlet of the volute portion.

12. The drying tunnel assembly according to claim 11, It is characterized in that The fan housing comprises a main body and an end cover, the air inlet is arranged on a first side of the main body along the axial direction, and the end cover is buckled on a second side of the main body along the axial direction; the lower cover and the main body are an integral component.

13. A clothes processing device, It is characterized in that include: A drum assembly, the drum assembly having a clothes processing chamber; Heat exchange components; as well as According to any one of claims 11-12, the heat exchange component is arranged in the air duct cavity, and the guide portion is used to guide the airflow to the clothing processing cavity.

14. The laundry processing apparatus according to claim 13, It is characterized in that The drying tunnel assembly is arranged above the drum assembly; the clothing processing device comprises a door sealing ring, the door sealing ring is formed with a return air port communicating with the clothing processing chamber, and the air guide is connected to the return air port.

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