Cleaning machine

Abstract

The cleaning machine comprises an inner container, and a hot air device and a protective cover are arranged on a rear wall plate of the inner container. The protective cover comprises a protective cover body, and the protective cover body is provided with a first sub-cavity and a second sub-cavity which are arranged side by side in the left-right direction. The hot air device is located in the first sub-cavity and comprises a draught fan and a heating pipe surrounding the draught fan. The first sub-cavity comprises a first end wall and a plurality of first side walls surrounding the first end wall, and a plurality of air outlet holes are at least formed in the first side wall, away from the second sub-cavity, of the first side walls; the air outlet holes comprise strip-shaped through holes, each air outlet hole is provided with a first end close to the first end wall and a second end close to the opening of the first sub-cavity, and the orthographic projection of the heating pipe on the plane where the corresponding first side wall is located is at least partially located between the first end and the second end of each air outlet hole. In this way, in the diffusion process of the hot air heated by the heating pipe, most of the hot air can be discharged into the inner container through the air outlet holes in the first side wall.

Description

Technical Field

[0001] The utility model generally relates to the technical field of kitchen equipment, and in particular to a cleaning machine. Background Art

[0002] A washing machine is a device that automatically washes bowls, chopsticks, plates, dishes, knives, forks and other tableware. The fully automatic washing machines on the market can be divided into two categories: household and commercial. Household fully automatic washing machines are only suitable for households, and are mainly cabinet-type, desktop-type, sink-integrated and integrated types.

[0003] In a washing machine, air is blown into the inner chamber during the drying phase to improve the drying effect. A typical drying device consists of a centrifugal fan, a heater, and a protective cover that houses the centrifugal fan and heater. The heater is positioned around the centrifugal fan. The centrifugal fan draws air from the inner chamber of the washing machine, which is then heated by the heater before entering the inner chamber. The hot air dries and evaporates water from the inner chamber and the dishes, preventing moisture and odor from forming inside the inner chamber.

[0004] In the related art, the vents provided on the protective cover will affect the circulation of air, thereby affecting the drying effect of the washing machine. Utility Model Content

[0005] The present application hopes to provide a washing machine, which is at least used to prevent hot air from being blocked by the first side wall, thereby improving the drying effect of the washing machine.

[0006] The utility model provides a cleaning machine, comprising an inner tank.

[0007] A hot air device and a protective cover are provided on the rear wall of the inner container.

[0008] The protective cover includes a protective cover body, which is provided with a first sub-cavity and a second sub-cavity arranged side by side. The hot air device is located in the first sub-cavity and includes a blower and a heating pipe surrounding the blower.

[0009] The first sub-cavity includes a first end wall and a plurality of first side walls surrounding the first end wall. A plurality of air outlet holes are provided on at least one of the plurality of first side walls, the first side wall distal to the second sub-cavity. The air outlet holes comprise strip-shaped through holes having a first end proximate to the first end wall and a second end proximate to the opening of the first sub-cavity. The orthographic projection of the heating tube onto the plane containing the corresponding first side wall is at least partially located between the first and second ends of each air outlet hole.

[0010] As an implementable manner, each of the strip-shaped through holes extends along a straight line, and each of the strip-shaped through holes located on the same first side wall extends in the same direction.

[0011] As an implementable manner, the rotation axis of the fan is projected orthographically onto the first side wall, and the extension direction of each of the air outlets intersects with the projection of the rotation axis of the fan.

[0012] As an implementable manner, the cross section of the heating tube is circular, the diameter of the circle is d, and the dimensions of both ends of the air outlet in the direction of the rotation axis are L1, d≤L1.

[0013] As an implementable manner, 1.5d≤L1≤3d.

[0014] As an implementable manner, in a direction perpendicular to the rotation axis, there is a gap between the heating tube and the center of each air outlet, and the minimum distance of the gap is L2, 2d≤L2.

[0015] As an implementable manner, 2.5d≤L2≤4d.

[0016] As an implementable manner, an air inlet area is provided on the first end wall, and a plurality of air inlet holes are provided in the air inlet area, and the total area of ​​the air outlet holes on any first side wall is smaller than the total area of ​​the air inlet holes on the first end wall.

[0017] As an implementation method, on the first end wall, the air inlet area is offset toward the first side wall where the air outlet is provided.

[0018] As an implementable manner, along the opening direction from the first end wall to the first sub-cavity, the height of the portion of the first end wall corresponding to the air inlet area is higher than the height of the remaining portion of the first end wall.

[0019] The above solution is that the heating tube is located within the range of the air outlet along the direction of the rotation axis in the orthographic projection plane parallel to the rotation axis of the fan. In this way, during the diffusion process of the hot air heated by the heating tube, most of the hot air can be discharged into the inner tank through the various air outlets on the first side wall, avoiding the hot air being blocked by the first side wall. The cross section of the heating tube is circular, the diameter of the circle is d, and the size of the air outlet in the direction of the axis is L1, d≤L1. By setting d≤L1, the drying effect can be prevented from being blocked by the first side wall. In the direction perpendicular to the rotation axis of the fan, there is a gap between the heating tube and the center of each air outlet, and the minimum distance of the gap is L2, 2d≤L2. By setting 2d≤L2, the distance between the first side wall and the heating tube is prevented from being too close to hinder the flow of hot air. It is also avoided that the distance between the first side wall and the heating tube is too close to cut the hot air and generate loud noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 A three-dimensional diagram of the first cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 1 ;

[0022] Figure 2 A three-dimensional diagram of the first cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 2 ;

[0023] Figure 3 A partial cross-sectional view of a first cleaning machine (door body not shown) provided by an embodiment of the present utility model;

[0024] Figure 4 yes Figure 3 A magnified schematic diagram of a local area A;

[0025] Figure 5 A front view of the first protective cover provided by an embodiment of the present utility model;

[0026] Figure 6 A top view of a first protective cover provided in an embodiment of the present utility model;

[0027] Figure 7 A three-dimensional diagram of a second cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 1 ;

[0028] Figure 8 A three-dimensional diagram of a second cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 2 ;

[0029] Figure 9 A three-dimensional diagram of a third cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 1 ;

[0030] Figure 10 A three-dimensional diagram of a third cleaning machine (door body not shown) provided by the embodiment of the utility model Figure 2 ;

[0031] Figure 11 A three-dimensional diagram of a fourth cleaning machine (door body not shown) provided by the present utility model Figure 1 ;

[0032] Figure 12 A three-dimensional diagram of a fourth cleaning machine (door body not shown) provided by the present utility model Figure 2 ;

[0033] Inner tank 1, rear wall panel 11, fan 2, disinfection lamp 3, water pipe 4, heating pipe 6;

[0034] Protective cover 5, cavity 501, first sub-cavity 51, first upper side wall 511, first lower side wall 512, first right side wall 513, first left side wall 514, first end wall 515;

[0035] Air inlet 5101, air outlet 5102, first pressure profile 5103, air inlet area 5104;

[0036] The second sub-cavity 52 , the second upper sidewall 521 , the second lower sidewall 522 , the second right sidewall 523 , the second left sidewall 524 , and the second end wall 525 ;

[0037] The recessed portion 53 and the avoidance groove 54 . DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for the purpose of explaining the relevant utility model and are not intended to limit the utility model. It should also be noted that, for ease of description, only the portions relevant to the utility model are shown in the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] At least see Figures 1-12 As shown, the present invention provides a washing machine, comprising: an inner tank 1, at least one hot air device and a protective cover 5. The washing machine of this embodiment can be a dishwasher.

[0041] At least one hot air device is provided on the rear wall plate 11 of the inner container 1. The hot air device includes a fan 2 and a heating pipe 6, and the heating pipe 6 is provided around the periphery of the fan 2.

[0042] The protective cover 5 includes a protective cover body, and the protective cover body is provided with a first sub-cavity 51 and a second sub-cavity 52 arranged side by side on the left and right.

[0043] A hot air device is located in the first sub-cavity 51 , and the hot air device includes a fan 2 and a heating pipe 6 surrounding the fan 2 .

[0044] The first sub-cavity 51 includes a first end wall 515 and a plurality of first side walls surrounding the first end wall 515 . A plurality of air outlet holes 5102 are provided on at least the first side wall away from the second sub-cavity 52 among the plurality of first side walls.

[0045] Each air outlet 5102 is a strip-shaped through hole. The length of each air outlet 5102 extends in the same direction as the first end wall 515 to the opening of the first sub-cavity 51. The air outlet 5102 has a first end proximal to the first end wall 515 and a second end proximal to the opening of the first sub-cavity 51. The orthographic projection of the heating tube 6 onto the first side wall where the air outlet 5102 is located is at least partially located between the first and second ends of each air outlet 5102.

[0046] Among them, such as Figure 1-Figure 5 As shown, in one embodiment, a hot air device is located in the first sub-cavity 51, and the disinfection lamp 3 is located in the second sub-cavity 52. ​​The first sub-cavity 51 and the second sub-cavity 52 are independent of each other. Alternatively,

[0047] like Figures 6-11 As shown, in another embodiment, a hot air device is located in the first sub-cavity 51, and the second sub-cavity 52 is not provided with any mechanism. There is an air duct connecting the first sub-cavity 51 and the second sub-cavity 52, and an air outlet 5102 is provided on the second end wall 525 or / and the second side wall of the second sub-cavity 52. ​​Alternatively,

[0048] In another embodiment, one hot air device is located in the first sub-cavity 51, and the other hot air device is located in the second sub-cavity 52, and the first sub-cavity 51 and the second sub-cavity 52 are independent of each other. Alternatively,

[0049] In another embodiment, a hot air device is located in the first sub-cavity 51, and only one fan 2 is located in the second sub-cavity 52. ​​The first sub-cavity 51 and the second sub-cavity 52 are independent of each other.

[0050] The following examples are described with a hot air device located in the first sub-cavity 51, the disinfection lamp 3 located in the second sub-cavity 52, and the first sub-cavity 51 and the second sub-cavity 52 being independent of each other:

[0051] At least Figure 5 and Figure 6 As shown, the protective cover body includes a side wall and an end wall, and the side wall is arranged around the edge of the end wall to form a cavity 501.

[0052] An escape groove 54 is provided on the side wall of the protective cover body. The edge of the side wall at the opening of the cavity 501 is recessed from the back to the front to form the escape groove 54.

[0053] like Figure 5 and Figure 6As shown, a recessed portion 53 is provided in the middle of the protective cover body, which extends downward to the bottom of the avoidance groove 54. The middle portion of the end wall is recessed from front to back to form this recessed portion 53. The recessed portion 53 divides the cavity 501 into a first sub-cavity 51 and a second sub-cavity 52, which are arranged side by side and are independent of each other. This prevents interference between the fan 2, the heating tube 6, and the disinfection lamp 3.

[0054] The recessed portion 53 is located in the middle of the end wall in the left-right direction. The recessed portion 53 can be a long groove. The long groove can extend vertically and penetrate the protective cover body, that is, the upper and lower ends of the long groove are open. Of course, it is understood that the groove portion can have other structures, which are not listed in this embodiment.

[0055] The long groove divides the end wall into two parts, wherein the end wall area located on the left side of the long groove is the first end wall 515 , and the end wall area located on the right side of the long groove is the second end wall 525 .

[0056] like Figure 5 As shown, the sidewalls include a first left sidewall 514 , a first lower sidewall 512 , a first right sidewall 513 , a first upper sidewall 511 , a second left sidewall 524 , a second lower sidewall 522 , a second right sidewall 523 and a second upper sidewall 521 .

[0057] The first left side wall 514, the first lower side wall 512, the first right side wall 513, and the first upper side wall 511 are connected end to end and arranged around the edge of the first end wall 515, thereby forming the first sub-cavity 51. It should be noted that the first sub-cavity 51 and the recessed portion 53 share the first right side wall 513.

[0058] The second left side wall 524, the second lower side wall 522, the second right side wall 523, and the second upper side wall 521 are connected end to end and arranged around the edge of the second end wall 525 to form the second sub-cavity 52. ​​It should be noted that the second sub-cavity 52 and the recessed portion 53 share the second left side wall 524.

[0059] By providing the recessed portion 53, the overall rigidity and strength of the protective cover body can be improved, thereby preventing the first sub-cavity 51 and the second sub-cavity 52 from being deformed due to the deformation of the protective cover body, and making it impossible to install the protective cover 5 on the rear wall panel 11 of the cleaning machine, or preventing the blades of the fan 2 from scratching the cavity wall of the first sub-cavity 51 during rotation, or preventing the second sub-cavity 52 from deforming and contacting the disinfection lamp 3 installed therein, causing damage to the disinfection lamp 3.

[0060] The protective cover body can be made of, but is not limited to, stainless steel.

[0061] The protective cover body can be made of, but is not limited to, sheet metal processing or stamping processing.

[0062] The protective cover body is formed using a stamping process. A stainless steel sheet to be stamped is placed on a stamping device, and the punch presses the sheet, forming the protective cover body with a recessed portion 53, a relief groove 54, a first sub-cavity 51, and a second sub-cavity 52. ​​This allows the protective cover 5 to be integrally formed, simplifying and convenient processing and helping to reduce production costs.

[0063] In addition, if Figure 1 、 Figure 2 、 Figure 3 As shown, the water pipe 4 is arranged in a vertical direction and is located on the rear wall 11 of the inner container 1. The protection cover 5 is provided with an avoidance groove 54, so that the water pipe 4 can pass through the avoidance groove 54 and the protection cover 5, so that the installation of the protection cover 5 and the water pipe 4 does not affect each other.

[0064] like Figure 5 and Figure 6 As shown, an air inlet area 5104 is provided on the first end wall 515. The air inlet area 5104 is provided with a plurality of air inlet holes 5101. The air inlet area 5104 can be arranged directly opposite the fan 2 to shorten the air inlet path, reduce air inlet resistance, and increase air inlet volume. The plurality of air inlet holes 5101 can be arranged in a circular array or a rectangular array.

[0065] Because the first left side wall 514, the first lower side wall 512, and the first upper side wall 511 are all located away from the second sub-cavity 52, a plurality of air outlet holes 5102 are correspondingly provided on each of the first left side wall 514, the first lower side wall 512, and the first upper side wall 511. The plurality of air outlet holes 5102 can be arranged in a circular array or a rectangular array. The first right side wall 513, located closer to the second sub-cavity 52, does not have any air outlet holes 5102.

[0066] In this way, each air outlet 5102 is not directed toward the second sub-cavity 52 , thereby suppressing the influence of the fan 2 on the disinfection lamp 3 .

[0067] In actual use, air outside the protective cover body enters the first sub-cavity 51 through the air inlet 5101 on the first end wall 515 under the action of the rotating blades of the fan 2. The air in the first sub-cavity 51 is then centrifugally ejected by the blades of the fan 2, and then heated by the heating tube 6 before being discharged through the air outlet 5102. Since the air is heated by the heating tube 6, the hot air will float upward. If the wind pressure at the air outlet is low, this will affect the uniformity of the hot air flow in the inner liner 1.

[0068] Based on this, the total area of ​​the air outlet holes 5102 of any one of the first left side wall panel 514, the first lower side wall panel 512, and the first upper side wall panel 511 is smaller than the total area of ​​the air inlet holes 5101 in the first end wall 515. The larger wind pressure can transport the hot air to all corners of the inner liner 1 faster, so that more hot air can be discharged from the bottom of the protective cover 5.

[0069] In one embodiment, Figure 5 As shown, the air inlet area 5104 is offset toward the first left side wall 514 on the first end wall 515. In this way, each air outlet 5102 is further away from the second sub-cavity 52, further suppressing the influence of the fan 2 on the disinfection lamp 3.

[0070] Among them, such as Figure 3 and Figure 4 As shown, each air outlet hole 5102 on the first left side wall 514 is a strip-shaped through hole, including a first end near the first end wall 515 and a second end near the opening of the first sub-cavity 51. The heating tube 6 is at least partially located between the first and second ends of each air outlet hole 5102. Preferably, the intermediate area between the first and second ends corresponds to the heating tube 6.

[0071] In this way, when the hot air heated by the heating tube 6 diffuses from right to left, most of the hot air can be discharged into the inner tank 1 through the air outlet holes 5102 of the first left side wall 514, avoiding the hot air being blocked by the first left side wall 514.

[0072] Similarly, for each air outlet hole 5102 on the first upper side wall 511 and each air outlet hole 5102 on the first lower side wall 512 , refer to the above description of each air outlet hole 5102 on the first upper side wall 511 , and thus will not be repeated herein.

[0073] Furthermore, if Figure 3 and Figure 4 As shown, the cross section of the heating tube 6 is circular, the diameter of the circle is d, and the size of the air outlet 5102 in the axial direction is L1, d≤L1.

[0074] By setting d≤L1, it is possible to avoid affecting the drying effect due to the hot air being blocked by the first upper side wall 511, the first lower side wall 512, and the first left side wall 514.

[0075] Preferably, 1.5d≤L1≤3d. On the one hand, it can avoid the hot air being blocked by the first upper side wall 511, the first lower side wall 512, and the first left side wall 514, thereby affecting the drying effect. On the other hand, it will not cause the size of the air outlet 5102 to be set too large, affecting the stiffness and strength of the first upper side wall 511, the first lower side wall 512, and the first left side wall 514, resulting in a reduced protective effect of the protective cover 5.

[0076] Furthermore, if Figure 3 and Figure 4 As shown, in the direction perpendicular to the rotation axis of the fan 2, there is a gap between the heating tube 6 and the center of each air outlet 5102, and the minimum distance of the gap is L2, 2d≤L2.

[0077] By setting 2d≤L2, the distance between the first upper side wall 511, the first lower side wall 512, the first left side wall 514 and the heating tube 6 is prevented from being too close, thereby hindering the flow of hot air; and the distance between the first upper side wall 511, the first lower side wall 512, the first left side wall 514 and the heating tube 6 is prevented from being too close, thereby preventing the air outlet 5102 from cutting the hot air and generating loud noise.

[0078] Preferably, 2.5d≤L2≤4d, so that there is a suitable distance between the first upper side wall 511, the first lower side wall 512, the first left side wall 514 and the heating tube 6. On the one hand, it can avoid obstructing the flow of hot air, and on the other hand, it can suppress the noise generated by the air outlet 5102 cutting the hot air.

[0079] As an implementation method, the air outlet 5102 includes strip-shaped through holes located on the same first side wall, and both ends of each strip-shaped through hole are flush.

[0080] like Figure 5 As shown, on the first left side wall 514, each air outlet hole 5102 is a strip-shaped through hole, which can be a waist-shaped strip through hole, an elliptical strip through hole, a diamond-shaped strip through hole, a rectangular strip through hole, an arc-shaped strip through hole, etc. Each air outlet hole 5102 is of equal length. The strip-shaped air outlet holes 5102 effectively guide the flow of hot air, forming a concentrated hot air flow, thereby improving the air supply efficiency of the fan 2. Furthermore, the strip-shaped through holes disperse the air flow, helping to suppress the noise generated when the strip-shaped through holes cut through the hot air.

[0081] Of course, it is understandable that the air outlet holes 5102 can also be circular through holes, mesh through holes, or other suitable through holes.

[0082] As an implementable manner, each strip-shaped through hole extends along a straight line, and each strip-shaped through hole located on the same first side wall extends in the same direction.

[0083] like Figure 3-Figure 5 As shown, on the first left side wall 514, each air outlet 5102 is a waist-shaped, elongated through-hole, extending in a direction inclined relative to the vertical direction. The air outlets 5102 are arranged in parallel. This ensures that the hot air flowing through the air outlets 5102 has a consistent direction, forming a stable hot air flow, which helps maintain the stability of the drying effect.

[0084] Of course, it is understandable that the extension direction of each air outlet 5102 can also be the front-to-back direction, or other directions.

[0085] As an implementation method, the rotation axis of the fan 2 is projected onto the first side wall, and the extension direction of each air outlet 5102 intersects with the projection of the rotation axis of the fan 2.

[0086] like Figure 3-Figure 5 As shown, when the fan 2 rotates, each air outlet 5102 can evenly disperse the hot air, so that the hot air can effectively cover a wider area; it helps to reduce the resistance of the air on the blades of the fan 2, thereby improving the air supply efficiency.

[0087] As an achievable method, Figure 5 、 Figure 6 As shown, at least one circle of first profile 5103 is provided on the first end wall 515, and the first profile 5103 surrounds the air inlet area 5104. The first profile 5103 can enhance the rigidity and strength of the first end wall 515, ensure the flatness of the first end wall 515, and thus reduce the probability of the blades of the fan 2 rubbing against the first end wall 515 due to deformation of the first end wall 515.

[0088] It should be noted that the first embossment 5103 can be an annular groove that is recessed from front to back along a portion of the first end wall 515. Alternatively, the first embossment 5103 can be an annular protrusion that is convex from back to front along a portion of the first end wall 515. When the protective cover body is formed using a stamping process, the first embossment 5103 can be formed by stamping.

[0089] In one embodiment, along the opening direction from the first end wall 515 to the first sub-cavity 51 , the height of the portion of the first end wall 515 corresponding to the air inlet area 5104 is higher than the height of the remaining portion of the first end wall 515 .

[0090] Specifically, at least Figure 5 and Figure 6 In the example, the air inlet area 5104 of the first end wall 515 protrudes a distance from the back to the front, so that the air inlet area 5104 of the first end wall 515 and the area of ​​the first end wall 515 except the air inlet area 5104 are not on the same plane. This increases the distance between the air inlet area 5104 and the blades of the fan 2, and reduces the probability that the blades of the fan 2 will scratch the first end wall 515 due to the deformation of the first end wall 515.

[0091] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0092] The above description is merely a preferred embodiment of the present application and an illustration of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also encompass other technical solutions formed by any combination of the above-mentioned technical features or their equivalents without departing from the inventive concept. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A cleaning machine, characterized in that: include: Liner (1); A hot air device and a protective cover (5) are provided on the rear wall (11) of the inner container (1). The protective cover (5) comprises a protective cover body, wherein the protective cover body is provided with a first sub-cavity (51) and a second sub-cavity (52) arranged side by side on the left and right; The hot air device is located in the first sub-cavity (51), and comprises a fan (2) and a heating pipe (6) surrounding the fan (2); The first sub-cavity (51) comprises a first end wall (515) and a plurality of first side walls surrounding the first end wall (515), wherein at least one of the plurality of first side walls, which is away from the second sub-cavity (52), is provided with a plurality of air outlet holes (5102); The air outlet hole (5102) comprises a strip-shaped through hole, and the air outlet hole (5102) has a first end close to the first end wall (515) and a second end close to the opening of the first sub-cavity (51), and the orthographic projection of the heating tube (6) on the plane where the corresponding first side wall is located is at least partially located between the first end and the second end of each air outlet hole (5102).

2. The cleaning machine according to claim 1, characterized in that Each of the strip-shaped through holes extends along a straight line, and each of the strip-shaped through holes located on the same first side wall extends in the same direction.

3. The cleaning machine according to claim 2, characterized in that The rotation axis of the fan (2) is projected onto the first side wall, and the extension direction of each of the air outlet holes (5102) intersects with the projection of the rotation axis of the fan (2).

4. The cleaning machine according to claim 3, characterized in that The cross section of the heating tube (6) is circular, the diameter of the circle is d, and the dimensions of both ends of the air outlet (5102) in the direction of the rotation axis are L1, d≤L1.

5. The cleaning machine according to claim 4, characterized in that 1.5d≤L1≤3d.

6. The cleaning machine according to claim 3, characterized in that In a direction perpendicular to the rotation axis, there is a gap between the heating tube (6) and the center of each of the air outlet holes (5102), and the minimum distance of the gap is L2, 2d≤L2.

7. The cleaning machine according to claim 6, characterized in that 2.5d≤L2≤4d.

8. The cleaning machine according to claim 1, characterized in that An air inlet area (5104) is provided on the first end wall (515), and a plurality of air inlet holes (5101) are provided in the air inlet area (5104), and the total area of ​​the air outlet holes (5102) on any one of the first side walls is smaller than the total area of ​​the air inlet holes (5101) on the first end wall (515).

9. The cleaning machine according to claim 8, characterized in that On the first end wall (515), the air inlet area (5104) is offset in the direction of the first side wall provided with the air outlet (5102).

10. The cleaning machine according to claim 8, characterized in that Along the opening direction from the first end wall (515) to the first sub-cavity (51), the height of the portion of the first end wall (515) corresponding to the air inlet area (5104) is higher than the height of the remaining portion of the first end wall (515).

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