Drum outer drum assembly, drum type washing and drying equipment

Abstract

The present invention provides a drum-outer drum assembly and a drum-type washing and drying device, wherein the drum-outer drum assembly comprises: an outer drum body, the outer drum body including a rear drum, the rear drum having an inner drum mounting hole at the center of its bottom wall, and a vertical plane passing through the central axis of the inner drum mounting hole dividing the interior space of the outer drum body into a first side space and a second side space; a condensate flow distribution structure, an air inlet of a drying air duct on the wall of the rear drum, and the condensate flow distribution structure are located within the first side space, and are configured such that a greater amount of water flows into the first side space than into the second side space. The present invention effectively prevents splashing of condensate during the introduction of condensate while improving the condensation efficiency of moist hot air, resulting in a better drying effect.

Description

Technical Field

[0001] The invention belongs to the technical field of washing and drying equipment design, and in particular relates to a drum outer drum assembly and a drum type washing and drying equipment. Background Art

[0002] At present, some drum washing and drying machines on the market use a drying and condensing method in which a water inlet is set on the inner wall of the rear drum to introduce condensed water. The condensed water flows down along the inner wall of the rear drum, playing the role of a conventional condenser. However, the guide portion on the inner wall of the rear drum often has only a single guide or a double-sided guide, and cannot fully utilize the area of ​​the inner wall of the rear drum, resulting in low condensation efficiency, unsatisfactory drying effect, and even user complaints. Specifically, in order to reduce the overall size and make the structure more compact, the existing drum washing and drying machines have the drying duct related components deviated from the axis of the outer drum and set in the side area of ​​the outer drum (left or right), thereby reducing the size of the entire device. The overall height is corresponding. Correspondingly, the air inlet of the drying duct (that is, the air outlet of the outer drum) is also correspondingly offset to the side area of ​​the outer drum. During the clothes drying process, driven by the drying fan, the air flow in the drum is driven to flow to the side of the air inlet of the drying duct. The guide ribs arranged on the inner wall of the rear drum in the prior art are mostly arranged based on the principle of comprehensive and uniform coverage of the inner wall of the rear drum, resulting in a small amount of humid hot air flow away from the aforementioned air inlet, a small heat exchange demand but an excess of condensing water cooling capacity, and a large amount of humid hot air flow close to the aforementioned air inlet, a large heat exchange demand but an insufficient condensing water cooling capacity, which makes the overall condensation and drying efficiency low. Summary of the Invention

[0003] Therefore, the present invention provides a drum outer drum assembly and a drum type washing and drying equipment, which can solve the technical problems in the prior art that the hot and humid air flow on the side away from the air inlet of the drying air duct is small, the heat exchange demand is small but the condensation water cooling capacity is excessive, and the hot and humid air flow on the side close to the air inlet of the drying air duct is large, the heat exchange demand is large but the condensation water cooling capacity is insufficient, and the overall condensation and drying efficiency of the washing and drying equipment is low.

[0004] In order to solve the above problems, the present invention provides a drum outer cylinder assembly, comprising:

[0005] An outer cylinder body, the outer cylinder body including a rear cylinder, the center of the bottom wall of the rear cylinder having an inner cylinder mounting hole, a vertical plane passing through the central axis of the inner cylinder mounting hole dividing the internal space of the outer cylinder body into a first side space and a second side space, an air inlet of a drying air duct formed on the cylinder wall of the rear cylinder, the air inlet corresponding to the first side space;

[0006] The condensate flow distribution structure is located in the top area of ​​the inner side surface of the bottom wall of the cylinder and in the first side space. The condensate flow distribution structure is configured so that the amount of condensate flowing out of it flowing into the first side space is greater than the amount of condensate flowing into the second side space.

[0007] In some embodiments,

[0008] The condensed water flow distribution structure includes:

[0009] a concave cavity, the concave cavity being in communication with a condensate water inlet;

[0010] A flow distribution baffle is assembled to cover the opening of the concave cavity, and together with the bottom wall of the cylinder forms a condensate outlet located at the lower position of the concave cavity. A distribution flow channel is formed on the side surface of the flow distribution baffle facing the concave cavity, and the distribution flow channel extends from the side of the condensate inlet to the side of the first side space.

[0011] In some embodiments,

[0012] The flow distribution baffle includes a guide portion and a connecting portion arranged around the guide portion, wherein the distribution flow channel is constructed on the guide portion, and the distribution flow channel extends downward in a direction close to the first side space.

[0013] In some embodiments,

[0014] The guide portion further comprises an impact buffer groove communicated with the distribution channel, and the impact buffer groove is arranged opposite to the condensed water inlet; and / or,

[0015] A top water retaining flange is formed in the upper area of ​​the guide portion, and the top water retaining flange is in contact with the bottom wall of the top area of ​​the concave cavity.

[0016] In some embodiments,

[0017] There is a distance L between the condensed water inlet and the impact buffer groove, 2mm≤L≤10mm.

[0018] In some embodiments,

[0019] The opening edge plane of the cavity is provided with a plurality of screw columns, the connecting portion is provided with mounting holes corresponding to each of the screw columns one by one, and the flow distribution baffle is threadedly connected to each of the screw columns via the mounting holes.

[0020] In some embodiments,

[0021] A positioning column is provided on the opening edge plane of the cavity, and a positioning hole corresponding to the positioning column is provided on the connecting portion.

[0022] In some embodiments,

[0023] The flow distribution baffle is made of metal material; and / or the flow distribution baffle is formed by metal sheet stamping.

[0024] In some embodiments, the drum outer drum assembly further comprises:

[0025] The rear cylinder condensation structure is formed on the inner side surface of the cylinder bottom wall and is used to form a condensation water film on the inner side surface of the cylinder bottom wall corresponding to the first side space and the second side space for the condensation water flowing to the first side space and the condensation water flowing to the second side space. The first side space and the second side space are each one of the left space and the right space.

[0026] In some embodiments,

[0027] The air inlet is formed in the top area of ​​the wall of the rear cylinder and is arranged adjacent to the condensed water flow distribution structure; and / or,

[0028] The rear drum condensation structure includes a plurality of guide ribs, and the number of the guide ribs in the first side space is greater than the number of the guide ribs in the second side space.

[0029] The present invention also provides a drum-type washing and drying device, comprising the above-mentioned drum outer drum assembly.

[0030] The present invention provides a drum outer drum assembly and a drum type washing and drying device, which has the following features:

[0031] Beneficial effects:

[0032] The condensed water flow distribution structure introduces the condensed water introduced therein into the first side space and the second side space respectively, and makes the amount of condensed water entering the first side space greater than the amount of condensed water entering the second side space. Since the first side space is the side directly connected to the air inlet, the condensed water with a larger amount of water in this side space can fully exchange heat and condense with the larger amount of humid hot air flow. At the same time, the condensed water with a smaller amount of water in the second side space can also match the heat exchange demand of the smaller amount of humid hot air flow in the corresponding side space, thereby improving the overall condensation efficiency of the rear drum condensation structure for humid hot air and achieving better drying effect.

[0033] A flow distribution baffle is provided at the condensate inlet. On the one hand, it can block the condensate introduced into the drum, thereby effectively preventing splashing during the condensate introduction process and reducing the chance of condensate wetting the clothes in the inner drum. On the other hand, the distribution flow channel provided on it distributes the condensate introduced into the condensate inlet, ensuring that the condensate of the target flow ratio is respectively guided to the corresponding space, achieving a match between the condensate flow and the heat of the moist and hot air flow, and improving the overall condensation effect of the rear drum condensation structure.

[0034] An impact buffer groove connected to the distribution flow channel is provided on the guide portion, which can temporarily buffer and store the injected condensed water. Then, most of the condensed water entering the groove is guided into the first side space through the distribution flow channels. The flow distribution is controllable and the structure is simple.

[0035] The use of metal materials to make the flow distribution baffle can utilize its thermal conductivity to transfer the cold part of the condensed water on the inner side to the outer side of the flow distribution baffle, thereby utilizing its contact with the hot and humid airflow to form re-condensation of the hot and humid airflow, further improving the drying effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0037] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0038] Figure 1 Schematic diagram of the front structure of the rear drum in the drum outer drum assembly according to an embodiment of the present invention;

[0039] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0040] Figure 3 This is a schematic diagram of the three-dimensional structure of the rear drum in the drum outer drum assembly according to another embodiment of the present invention, wherein the arrows in the figure indicate the outflow state of condensed water;

[0041] Figure 4 for Figure 3 A partial cross-sectional view of the rear drum in FIG, showing the relative position relationship between the condensate inlet and the flow distribution baffle;

[0042] Figure 5 for Figure 3 A front view of the flow distribution baffle in FIG. 1 (the side facing away from the cavity);

[0043] Figure 6 for Figure 5 Left side view of the flow distribution baffle in FIG;

[0044] Figure 7 for Figure 5 Schematic diagram of the three-dimensional structure of the flow distribution baffle;

[0045] Figure 8 Schematic diagram of the structure of the water inlet pipe valve assembly in an embodiment of the present invention;

[0046] Figure 9 Schematic diagram of the operation logic of the strong drying mode and the normal drying mode in an embodiment of the present invention;

[0047] Figure 10 for Figure 1 A schematic diagram of the three-dimensional structure of the rear tube.

[0048] The reference numerals indicate:

[0049] 11. Rear cylinder; 111. Inner cylinder mounting hole; 112. Air inlet;

[0050] 21. Concave cavity; 211. Condensate water inlet; 212. Screw column; 213. Positioning column;

[0051] 22. Flow distribution baffle; 221. Distribution channel; 222. Impact buffer tank; 23. Condensate outlet; 24. Top water retaining flange; 25. Mounting hole; 26. Positioning hole;

[0052] 31. First guide rib; 311. First guide bar; 312. Second guide bar; 313. Third guide bar; 32. Second guide rib; 33. Third guide rib; 34. Fourth guide rib; 35. Fifth guide rib; 36. Sixth guide rib; 37. Seventh guide rib;

[0053] 38. Eighth guide rib; 39. Ninth guide rib; 41. Fourth guide strip; 42. Fifth guide strip; 5. Diversion gap; 6. Water collection and drainage outlet; 71. First water inlet flow regulating valve; 72. Second water inlet flow regulating valve; 73. First branch pipe; 74. Second branch pipe; 75. Water inlet hose; 76. Tee pipe. DETAILED DESCRIPTION

[0054] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0056] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0057] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0058] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0061] See also Figure 1 and Figure 10 As shown, according to an embodiment of the present invention, a drum outer tub assembly is provided, specifically, it is applied to a drum-type laundry device, that is, the central axis of the drum outer tub assembly is on a horizontal plane, and the drum outer tub assembly includes:

[0062] The outer cylinder body (not shown in the figure and not labeled) includes a rear cylinder 11. The center of the bottom wall of the rear cylinder 11 (in the specific application condition, it is in a vertical state) has an inner cylinder mounting hole 111 for passing the rotating shaft that drives the inner cylinder to rotate. It can be understood that there is a sealing structure between the rotating shaft and the inner cylinder mounting hole 111. The vertical plane passing through the central axis of the inner cylinder mounting hole 111 (that is, the central axis of the roller outer cylinder assembly) divides the internal space of the outer cylinder body into a first side space and a second side space. The explanation is that the aforementioned vertical plane is only a virtual plane defined for the convenience of description, and there is no corresponding physical structure in the outer drum body. An air inlet 112 of a drying air duct (not shown or labeled in the figure) is formed on the wall of the rear drum 11. The air inlet 112 corresponds to the first side space, that is, the air inlet 112 is arranged on the wall of the rear drum corresponding to the first side space. The aforementioned drying air duct is specifically provided with a centrifugal fan and corresponding heating components. This part is a conventional component of the washing and drying equipment and is not described here in detail.

[0063] The condensed water flow distribution structure (not labeled in the figure) is located in the top area of ​​the inner side surface of the bottom wall of the cylinder (relative to the orientation of the washing and drying device in the use state) and is located in the first side space. The condensed water flow distribution structure is configured so that the amount of condensed water flowing out of the condensed water flowing into the first side space is greater than the amount of water flowing into the second side space. It can be understood that since the condensed water flow distribution structure is located in the first side space, that is, its top area of ​​the bottom wall of the cylinder is offset to one side of the outer cylinder body like the air inlet 112, the condensed water can be more conveniently distributed between the two side spaces.

[0064] The rear drum condensation structure is formed on the inner side surface of the bottom wall of the drum, and is used to form a condensation water film on the inner side surface of the bottom wall of the drum corresponding to the first side space and the second side space with the condensation water flowing to the first side space and the condensation water flowing to the second side space, so that the hot air in the aforementioned drying duct can enter the inner drum and contact with the clothes to be dried to form a humid and hot air flow. The humid and hot air flow is fully in contact with the formed condensation water film (waterfall) and condenses and cools down, and then enters the drying duct again through the aforementioned air inlet 112 for reheating, thereby forming a drying cycle. The first side space and the second side space are each one of the left space and the right space. For example, when the first side space is the left space, the second side space is the right space, and vice versa. The aforementioned left space and right space can be distinguished by the left and right direction of the drum mouth facing the user when the drum is in use.

[0065] In this technical solution, the condensed water flow distribution structure introduces the condensed water introduced into the first side space and the second side space respectively, and makes the amount of condensed water entering the first side space greater than the amount of condensed water entering the second side space. Since the first side space is the side directly connected to the air inlet 112, the larger amount of condensed water in this side space can be fully heat-exchanged and condensed with the larger amount of humid and hot air flow. At the same time, the smaller amount of condensed water in the second side space can also match the heat exchange requirements of the smaller amount of humid and hot air flow in the corresponding side space, thereby improving the overall condensation efficiency of the rear drum condensation structure for humid and hot air and achieving better drying effect.

[0066] In a preferred embodiment, the air inlet 112 is formed in the top area of ​​the cylinder wall of the rear cylinder 11. Setting the air inlet 112 in the top area can, on the one hand, shorten the design length of the drying duct, thereby making the corresponding drying equipment structure more compact. On the other hand, it can reduce the probability of the incoming air carrying condensed water into the drying duct, thereby ensuring the heating efficiency of the airflow in the drying duct and improving the drying energy efficiency.

[0067] It should be noted that the drum outer drum assembly in the present invention only adopts a rear drum condensation structure, and is not equipped with a conventional rear air duct condensation structure. This makes the overall structure of the drum outer drum assembly of the present invention more compact, and the overall size of the drum-type washing and drying equipment using it can be designed to be smaller.

[0068] See also Figure 1 and Figure 3 As shown, the rear cylinder condensation structure includes a plurality of guide ribs, that is, the rear cylinder condensation structure of the present invention is specifically formed by a combination of a plurality of guide ribs constructed on the inner side surface of the cylinder bottom wall. Different from the design in the prior art, the number of guide ribs in the first side space is greater than the number of guide ribs in the second side space, that is, more guide ribs are arranged in the space close to the air inlet 112.

[0069] In this technical solution, more guide ribs are arranged in the first side space to form a water film with a larger coverage area of ​​the condensed water with a larger amount of water in the space, so that the condensed water with a larger amount of water can form a more extensive contact with the humid and hot air flow with a larger flow rate, ensuring the utilization efficiency of the cooling capacity of the condensed water, that is, improving the condensation effect of the humid and hot air flow.

[0070] See Figure 1As shown, the rear cylinder condensation structure includes a first guide rib 31, and the first guide rib 31 includes a first guide bar 311 inclined toward the first side space and extending downward, and a second guide bar 312 inclined toward the second side space and extending downward, the high end of the first guide bar 311 is connected to the high end of the second guide bar 312, and the connection position between the first guide bar 311 and the second guide bar 312 is in the first side space, so that the first guide rib 31 is roughly a left-right asymmetrical herringbone.

[0071] In this technical solution, the first guide bar 311 directs the larger portion of condensed water in the condensate flow distribution structure to form a water film on the inner side surface of the cylinder bottom wall corresponding to the first side space. The second guide bar 312 directs the smaller portion of condensed water in the condensate flow distribution structure to form a water film on the inner side surface of the cylinder bottom wall corresponding to the second side space. This ensures that a water film forms on the inner side surfaces of the cylinder bottom walls corresponding to both side spaces, ensuring the condensation of the hot and humid airflow. By adjusting the high-end connection position of the first and second guide bars 311 and 312 and the position of the condensate outlet 23 of the condensate flow distribution structure, the proportion of condensed water entering the first and second side spaces can be controlled. In one specific embodiment, the amount of condensed water entering the first side space is controlled to account for 70%-80% of the total amount of water discharged from the condensate outlet 23, and the amount of condensed water entering the second side space is controlled to account for 20%-30% of the total amount of water discharged from the condensate outlet 23.

[0072] In some embodiments, the rear drum condensation structure also includes a second guide rib 32, which is located in the first side space and on the side of the second guide bar 312 close to the condensate flow distribution structure. The second guide rib 32 is inclined toward the second side space and extends downward, and the high end of the second guide rib 32 is above the connection position between the first guide bar 311 and the second guide bar 312.

[0073] In this technical solution, the second guide rib 32 is arranged above the connection position of the first guide bar 311 and the second guide bar 312, so as to block the connection position of the two guide bars, preventing a large amount of condensed water flowing out of the condensed water flow distribution structure from flowing to the aforementioned connection position to form condensed water splashing, and then wetting the clothes in the inner drum, which can improve the drying effect of the clothes.

[0074] See Figure 2As shown, a third guide bar 313 is formed on the lower guide surface of the first guide bar 311 (that is, the bottom side surface of the first guide bar 311), and the third guide bar 313 is arranged near the connection position between the first guide bar 311 and the second guide bar 312, and the third guide bar 313 extends downwardly at an angle toward the side of the inner cylinder mounting hole 111.

[0075] In this technical solution, the condensed water that has flowed over the first guide bar 311 can be further guided to the central position of the bottom wall of the cylinder through the third guide bar 313, thereby further increasing the coverage area of ​​the condensed water film in the first side space, and increasing the coverage area of ​​the water film of a large amount of condensed water on the inner side surface of the bottom wall of the cylinder, thereby further improving the condensation effect.

[0076] See Figure 1 As shown, the rear drum condensation structure also includes a third guide rib 33, which is located in the first side space and on the side of the first guide bar 311 close to the condensate flow distribution structure. The third guide rib 33 is inclined toward the first side space and extends downward. The high end of the third guide rib 33 is above the connection position between the first guide bar 311 and the second guide bar 312, and below the high end of the second guide rib 32. Specifically, the extension length of the third guide rib 33 is shorter than the extension length of the first guide bar 311.

[0077] In this technical solution, the third guide rib 33 can pre-divert a large amount of condensed water flowing out of the condensed water flow distribution structure before it contacts the first guide bar 311, preventing a large amount of condensed water from directly falling on the first guide bar 311 and flowing directly downward after turning over, and the problem of insufficient condensed water at the outer edge of the first side space occurs. Since the third guide rib 33 is arranged in the upper area of ​​the first guide bar 311, part of the condensed water is diverted in advance to the position of the first guide bar 311 close to the outer edge of the first side space, and part of it can turn over the third guide rib 33 and then contact the first guide bar 311 to form a water film.

[0078] The rear drum condensation structure further includes a fourth guide rib 34 located in the first side space and below the lower end of the third guide bar 313 to at least partially receive the condensed water guided by the third guide bar 313 .

[0079] In this technical solution, a fourth guide rib 34 is provided in the lower area of ​​the third guide strip 313, and the two guide directions are opposite (one to the left and the other to the right), so that the condensed water forms a larger condensed water film in the central area of ​​the bottom wall of the cylinder, thereby ensuring the condensation capacity of the condensed water in the first side space.

[0080] The rear cylinder condensation structure also includes a fifth guide rib 35, which is concentrically arranged with the center of the inner cylinder mounting hole 111 and is located above the inner cylinder mounting hole 111 and in the area between the second guide bar 312. The height of the fifth guide rib 35 is greater than the height of the circumferential wall of the inner cylinder mounting hole 111 protruding toward the internal space.

[0081] In this technical solution, by providing a fifth guide rib 35 above the inner drum mounting hole 111, condensation that flows over the second guide bar 312 is prevented from directly hitting the flange surrounding the inner drum mounting hole 111, causing condensation to splash and wet the clothes inside the inner drum. This also directs condensation at the center to the left and right sides. A design of approximately 4mm for the fifth guide rib 35 has been verified to achieve this purpose. Specifically, a thickness below 4mm fails to block condensation, allowing it to splash into the inner drum and wet the clothes. A thickness above 4mm creates a gap between the inner drum and the clothes, making the clothes dry and prone to wear during operation. It is worth noting that the width of each guide rib in the rear cylinder condensation structure of the present invention is set between 2.0mm-2.2mm, which can facilitate the injection molding of each guide rib while ensuring strength; in terms of height, except for the aforementioned fifth guide rib 35 whose height is selected as 4mm, the height of other guide ribs is between 3mm-3.2mm. Experiments have verified that within this height range, it is possible to have sufficient gap between the inner cylinder and the water film of the condensed water while meeting the requirements.

[0082] In some embodiments, the rear cylinder condensation structure also includes a sixth guide rib 36, which extends obliquely downward from the inner cylinder mounting hole 111 toward the first side space, and at least the high end of the sixth guide rib 36 is located in the area between the fourth guide rib 34 and the fifth guide rib 35, and the sixth guide rib 36 is located in the area below the connection position of the first guide bar 311 and the second guide bar 312.

[0083] In this technical solution, the sixth guide rib 36 is located in the area below the connection position of the first guide bar 311 and the second guide bar 312. The amount of condensed water at this position is large, and it is very easy to flow over the third guide rib 33, the first guide bar 311, the third guide bar 313, and the fourth guide rib 34 above it and flow downward. At this time, further arranging the sixth guide rib 36 on this path can further buffer the condensed water flowing through this place, which can further improve the condensation efficiency of the condensed water in the first side space.

[0084] See Figure 1As shown, the rear cylinder condensation structure further includes a seventh guide rib 37 and an eighth guide rib 38, which are arranged symmetrically about the vertical plane and both extend downward toward the side close to the inner cylinder mounting hole 111, so as to at least guide the two sides of the fifth guide rib 35 (i.e. Figure 1 The condensed water flowing down from the left and right sides of the direction shown in the figure is guided to the area below the inner cylinder mounting hole 111. The seventh guide rib 37 and the eighth guide rib 38 can at least guide part of the condensed water to the area below the inner cylinder mounting hole 111, and can make full use of the surface area of ​​the central area of ​​the inner surface of the cylinder bottom wall, ensuring that the condensed water forms a water film here, thereby improving the condensation effect of the rear cylinder condensation structure on the humid and hot air flow.

[0085] In some embodiments, the rear drum condensation structure further includes a ninth guide rib 39 , which is located below the seventh guide rib 37 and the eighth guide rib 38 and is arranged corresponding to the flow gap formed between the seventh guide rib 37 and the eighth guide rib 38 .

[0086] In this technical solution, the ninth guide rib 39 is arranged near the bottom side area of ​​the inner surface of the bottom wall of the cylinder, which can buffer the condensed water flowing down from above to form a water film again before entering the water collection and drainage outlet 6, further improving the condensation effect of the rear cylinder condensation structure.

[0087] In a preferred embodiment, the third guide bar 313 and / or the sixth guide rib 36 are formed with a guide notch 5. Figures 1 to 3 As shown, the third guide bar 313 and the sixth guide rib 36 are both located below the connection position of the first guide bar 311 and the second guide bar 312. In actual applications, the condensed water flow in this area is relatively large, and corresponding guide gaps 5 are constructed above the two, which can effectively prevent the phenomenon of poor water film formation caused by excessive water flow overflowing the corresponding ribs, so that the condensed water is further diverted and diffused at this position.

[0088] In order to improve the water film formation effect of the rear cylinder condensation structure in the two side areas, the rear cylinder condensation structure also includes a first side deflection rib group in the first side space and a second side deflection rib group in the second side space, wherein the first side deflection rib group includes a plurality of fourth guide bars 41 staggered up and down along the vertical direction, and the second side deflection rib group includes a plurality of fifth guide bars 42 staggered up and down along the vertical direction.

[0089] The aforementioned condensate flow distribution structure can specifically, for example, use two spray heads with different flow rates to achieve distribution and control of the condensate flow in different areas of the inner surface of the bottom wall of the cylinder. In a preferred embodiment, the condensate flow distribution structure includes:

[0090] The concave cavity 21 is connected to the condensed water inlet 211. The condensed water inlet 211 is arranged in the concave cavity 21, which can effectively prevent the condensed water inlet 211 from being too close to the inner drum, which may cause the clothes to get wet;

[0091] The flow distribution baffle 22 is assembled to cover the opening of the concave cavity 21, and together with the bottom wall of the cylinder forms a condensate outlet 23 located at the lower position of the concave cavity 21. The flow distribution baffle 22 is formed with a distribution channel 221 on the side surface facing the concave cavity 21. The distribution channel 221 extends from the side of the condensate inlet 211 to the side of the first guide bar 311 (that is, the aforementioned first space).

[0092] In this technical solution, on the one hand, a flow distribution baffle 22 is provided at the position of the condensate inlet 211, which can block the condensate introduced into the cylinder, thereby effectively preventing the splashing phenomenon during the introduction of the condensate and reducing the probability of the condensate wetting the clothes in the inner cylinder; on the other hand, the distribution flow channel 221 provided thereon distributes the flow of the condensate introduced by the condensate inlet 211, ensuring that the condensate of the target flow ratio (for example, 3:7 or 2:8) is respectively guided to the corresponding space, so as to achieve the matching of the condensate flow and the heat of the humid and hot air flow, and improve the overall condensation effect of the rear cylinder condensation structure. It is worth noting that since the flow distribution baffle 22 is provided at the condensate inlet 211 in the present invention, the condensate outflow pressure can be increased at this time, and the flow rate can also be correspondingly higher without worrying about the problem of condensate splashing, so the condensation effect can also be better.

[0093] In a preferred embodiment, the high ends of the second guide rib 32 and the third guide rib 33 are disposed at positions corresponding to the condensed water outlet 23 , thereby enabling the outflowing condensed water to be guided and distributed in a target proportion.

[0094] In some embodiments, the flow distribution baffle 22 includes a guide portion (not labeled in the figure) and a connecting portion (not labeled in the figure) arranged around the guide portion, wherein the connecting portion is used to detachably connect the flow distribution baffle 22 to the bottom wall of the cylinder, and the distribution flow channel 221 is constructed on the guide portion. The distribution flow channel 221 extends downward in a direction close to the first side space. The distribution flow channel 221 is concentric with the inner cylinder mounting hole 111 and extends downward in a direction close to the first side space, and can guide most of the condensed water introduced by the condensed water inlet 211 (target flow ratio) into the first side space. It can be understood that the length of the aforementioned condensed water outlet 23 extending along the circumference of the outer cylinder matches the extension length of the aforementioned distribution flow channel 221, and corresponds in position. In a specific embodiment, the distribution flow channel 221 is concentric with the inner cylinder mounting hole 111 to ensure its smooth guidance of the condensed water.

[0095] In some embodiments, the guide portion also has an impact buffer groove 222 connected to the distribution flow channel 221. The impact buffer groove 222 is arranged opposite to the condensate water inlet 211. It can be understood that the impact buffer groove 222 is recessed along the water spraying direction of the condensate water inlet 211, so that the condensate can be at least partially sprayed into the impact buffer groove 222.

[0096] In this technical solution, an impact buffer groove 222 connected to the distribution flow channel 221 is provided on the guide part, which can buffer and temporarily store the sprayed condensate water therein, and then most of the condensate entering therein can be guided into the first side space through each distribution flow channel 221. The flow distribution is controllable and the structure is simple.

[0097] Specifically, the target ratio can be determined by adjusting and matching the total volume of the impact buffer tank 222 and the flow area of ​​each distribution channel 221, which can be obtained through test data. In a specific embodiment, the total volume of the impact buffer tank 222 is 600mm 3 The total flow area of ​​each distribution channel 221 is 1170mm 2 It has been verified that the ratio of water entering the first side space to the water entering the second side space is approximately 8:2.

[0098] In order to improve the structural strength of the impact buffer groove 222 and thus increase its service life, in one embodiment, a reinforcing rib is formed on the bottom wall of the impact buffer groove 222, and the reinforcing rib is preferably formed by stamping.

[0099] In a preferred embodiment, a top water retaining flange 24 is formed in the upper area of ​​the guide portion, and the top water retaining flange 24 is in contact with the bottom wall of the top area of ​​the concave cavity 21 to prevent splashing condensed water from flowing out of the gap between the top of the flow distribution baffle 22 and the bottom wall of the cylinder.

[0100] In some embodiments, a distance L of 2 mm ≤ L ≤ 10 mm is provided between the condensate inlet 211 and the impact buffer groove 222. Within this distance, the flow direction of the condensate after exiting the condensate inlet 211 can be effectively controlled, which facilitates the distribution and control of the condensate flow rate.

[0101] The concave cavity 21 has a plurality of screw posts 212 on the flat surface of the opening edge, and the connecting portion has mounting holes 25 corresponding to each of the screw posts 212. The flow distribution baffle 22 is threadedly connected to each of the screw posts 212 via the mounting holes 25. Furthermore, the concave cavity 21 has a positioning post 213 on the flat surface of the opening edge, and the connecting portion has positioning holes 26 corresponding to the positioning post 213. In this technical solution, when assembling the flow distribution baffle 22, the positioning posts 213 and the positioning holes 26 can first be used to pre-align it with the bottom wall of the cylinder, and then the two can be threadedly connected using screws, which is more convenient and more efficient.

[0102] In some embodiments, the flow distribution baffle 22 is made of metal material, preferably, and is disposed adjacent to the aforementioned air inlet 112 along with the condensed water flow distribution structure. Metal material has high thermal conductivity and can utilize the cooling capacity of the condensed water to perform secondary condensation on the hot and humid airflow, thereby improving the drying effect. For example, the aforementioned metal material can be made of stainless steel. Figure 1 As shown, the air inlet 112 is arranged at a position slightly to the left of the top area of ​​the rear cylinder 11, and the condensate flow distribution structure is arranged at a position slightly to the left of the top area of ​​the inner surface of the bottom wall of the rear cylinder 11. In the axial direction of the rear cylinder 11, the air inlet 112 is arranged close to the inner surface of the bottom wall.

[0103] In this technical solution, the metal material used to make the flow distribution baffle 22 allows it to utilize its thermal conductivity to transfer the cooling energy of the condensed water on the inner side (the side facing the bottom wall of the drum) to the outer side of the flow distribution baffle 22, thereby utilizing its contact with the moist and hot airflow to re-condense the moist and hot airflow, further improving the drying effect. In other words, the rear drum condensation structure in this technical solution performs a primary condensation on the moist and hot airflow within the drum, while the flow distribution baffle 22 performs a secondary condensation on at least a portion of the airflow condensed by the rear drum condensation structure before it flows back into the air inlet 112. This further improves the drying effect while maintaining a simple and compact structure.

[0104] In order to ensure the heat exchange and condensation performance of the flow distribution baffle 22, its coverage of the inner surface of the bottom wall of the cylinder should not be too small, but at the same time it should not be too large, otherwise the condensation effect of the rear cylinder condensation structure will be reduced. Therefore, in a preferred embodiment, the total surface area of ​​the outer surface of the flow distribution baffle 22 is Sa, and the projected area of ​​the inner surface of the bottom wall of the cylinder in the radial direction of the rear cylinder 11 is Sb. The ratio of Sa to Sb is 2.2 (22:10).

[0105] In another preferred embodiment, the flow distribution baffle 22 is formed by metal sheet stamping, that is, the relevant structures on the flow distribution baffle 22 including the distribution channel 221, the impact buffer groove 222, the top side water retaining flange 24, the mounting hole 25 and the positioning hole 26 are all formed in one piece by stamping, which reduces the difficulty of manufacturing the flow distribution baffle 22.

[0106] After many experiments and simulation analyses on the whole machine, it was found that the position of the condensate inlet 211, the diameter of the condensate inlet 211, the flow rate of the water inlet valve (i.e. the flow rate of the condensate inlet 211), the material selection of the flow distribution baffle 22, and the installation position of the flow distribution baffle 22 also have different degrees of influence on the condensation efficiency. In a preferred embodiment, the position of the condensate inlet 211 is selected at the upper part of the inner wall of the rear cylinder (i.e. the inner surface of the cylinder bottom as mentioned above), the diameter of the condensate inlet 211 is selected between 5mm-10mm, the flow rate of the water inlet valve is controlled between 0.5L / min-1L / min, the flow distribution baffle 22 is made of stainless steel metal plate (metal baffles can conduct heat efficiently, and condensed water sprayed on the baffle can condense more efficiently and take away heat), and the installation distance between the flow distribution baffle 22 and the condensate inlet 211 is controlled between 2mm- 10mm, so that the flow direction of the above-mentioned condensed water can be effectively controlled, the condensed water (on the side of the recessed cavity) flowing to the right area (that is, the first side space mentioned above) of the guide rib is controlled at 70%-80% (generally, a fan is arranged above the recessed cavity 105, and more condensed water flows to the suction side of the fan to further improve the condensation efficiency), and the condensed water flowing to the left area (that is, the second side space mentioned above) of the guide rib is controlled at 20%-30%. Compared with the rear-cylinder condensation method of direct diversion of water inlet by conventional nozzles, the condensation efficiency is significantly improved.

[0107] See also Figure 8As shown, the condensate inlet 211 is connected to the outlet of the water inlet pipe valve assembly. Specifically, the water inlet pipe assembly includes a first water inlet flow regulating valve 71 and a second water inlet flow regulating valve 72 in parallel. The flow rates of the two water inlet flow regulating valves are different. For example, the flow rate of the first water inlet flow regulating valve 71 is greater than that of the second water inlet flow regulating valve 72. In a specific embodiment, the flow rate of the first water inlet flow regulating valve 71 is set to 1 L / min, and the flow rate of the second water inlet flow regulating valve 72 is set to 0.5 L / min. The outlet of the first water inlet flow regulating valve 71 is connected to a first branch pipe 73, and the outlet of the second water inlet flow regulating valve 72 is connected to a second branch pipe 74. The free ends of the first branch pipe 73 and the second branch pipe 74 are converged by a tee pipe 76 and connected to the aforementioned condensate inlet 211. In a more preferred embodiment, the tee pipe 76 is connected to the condensate inlet 211 through an inlet hose 75.

[0108] According to an embodiment of the present invention, a drum-type washing and drying device is further provided, comprising the above-mentioned drum outer drum assembly.

[0109] See Figure 9 According to an embodiment of the present invention, a control method for the drum-type washing and drying device is further provided, comprising the following steps:

[0110] Get user operation instructions,

[0111] When the acquired user operation instruction indicates the strong drying mode, the first water inlet flow regulating valve 71 is controlled to open for a first duration until drying is completed, and the second water inlet flow regulating valve 72 is not opened. When the acquired user operation instruction indicates the normal drying mode, the second water inlet flow regulating valve 72 is controlled to open for a second duration until drying is completed, and the first water inlet flow regulating valve 71 is not opened. Generally speaking, the first duration is shorter than the second duration.

[0112] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention. The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and variations without departing from the technical principles of the present invention, and such improvements and variations shall also be considered within the scope of protection of the present invention.

Claims

1. A drum outer cylinder assembly, characterized in that: include: An outer cylinder body, the outer cylinder body comprising a rear cylinder (11), an inner cylinder mounting hole (111) being provided at the center of a cylinder bottom wall of the rear cylinder (11), a vertical plane passing through the central axis of the inner cylinder mounting hole (111) dividing the internal space of the outer cylinder body into a first side space and a second side space, an air inlet (112) of a drying air duct being formed on the cylinder wall of the rear cylinder (11), the air inlet (112) corresponding to the first side space; The condensate flow distribution structure is located in the top area of ​​the inner side surface of the bottom wall of the cylinder and in the first side space. The condensate flow distribution structure is configured so that the amount of condensate flowing out of it flowing into the first side space is greater than the amount of condensate flowing into the second side space.

2. The drum outer cylinder assembly according to claim 1, characterized in that: The condensed water flow distribution structure includes: a concave cavity (21), wherein the concave cavity (21) is in communication with a condensate water inlet (211); A flow distribution baffle (22) is assembled to cover the opening of the concave cavity (21) and, together with the bottom wall of the cylinder, forms a condensate outlet (23) located at the lower position of the concave cavity (21). A distribution flow channel (221) is formed on a side surface of the flow distribution baffle (22) facing the concave cavity (21), and the distribution flow channel (221) extends from the side of the condensate inlet (211) to the side of the first side space.

3. The drum outer cylinder assembly according to claim 2, characterized in that: The flow distribution baffle (22) comprises a flow guide portion and a connecting portion arranged around the flow guide portion, wherein the distribution flow channel (221) is constructed on the flow guide portion, and the distribution flow channel (221) extends downward in a direction close to the first side space.

4. The drum outer cylinder assembly according to claim 3, characterized in that: The guide portion further comprises an impact buffer groove (222) in communication with the distribution flow channel (221), and the impact buffer groove (222) is arranged opposite to the condensed water inlet (211); and / or, A top water retaining flange (24) is formed in the upper region of the guide portion, and the top water retaining flange (24) is in contact with the bottom wall of the top region of the concave cavity (21).

5. The drum outer cylinder assembly according to claim 4, characterized in that: There is a distance L between the condensed water inlet (211) and the impact buffer groove (222), and the range is 2mm≤L≤10mm.

6. The drum outer cylinder assembly according to claim 3, characterized in that: The opening edge plane of the cavity (21) is provided with a plurality of screw columns (212), the connecting portion is provided with mounting holes (25) corresponding one-to-one to each of the screw columns (212), and the flow distribution baffle (22) is threadedly connected to each of the screw columns (212) via the mounting holes (25).

7. The drum outer cylinder assembly according to claim 6, characterized in that: A positioning column (213) is provided on the opening edge plane of the cavity (21), and a positioning hole (26) corresponding to the positioning column (213) is provided on the connecting portion.

8. The drum outer cylinder assembly according to claim 3, characterized in that: The flow distribution baffle (22) is made of metal material; and / or the flow distribution baffle (22) is formed by metal sheet stamping.

9. The drum outer cylinder assembly according to claim 1, characterized in that: Also includes: The rear cylinder condensation structure is formed on the inner side surface of the cylinder bottom wall and is used to form a condensation water film on the inner side surface of the cylinder bottom wall corresponding to the first side space and the second side space for the condensation water flowing to the first side space and the condensation water flowing to the second side space. The first side space and the second side space are each one of the left space and the right space.

10. The drum outer cylinder assembly according to claim 9, characterized in that: The air inlet (112) is formed in the top area of ​​the cylinder wall of the rear cylinder (11) and is arranged adjacent to the condensed water flow distribution structure; and / or, The rear drum condensation structure includes a plurality of guide ribs, and the number of the guide ribs in the first side space is greater than the number of the guide ribs in the second side space.

11. A drum-type washing and drying device, characterized in that: A drum outer cylinder assembly comprising the drum outer cylinder assembly according to any one of claims 1 to 10.

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