Cleaning machine

Abstract

The utility model discloses a cleaning machine which comprises an inner container (1) provided with a rear wall plate (11). The impeller is rotatably arranged on the rear wall plate (11), the rotating axis of the impeller extends front and back, and the impeller is provided with at least two blades (21) arranged at intervals in the circumferential direction; the heating pipe (6) is arranged on the rear wall plate (11), and the heating pipe is provided with a heating section (61) which is arranged in a bent mode; the heating section (61) surrounds the peripheral side of the impeller and is located between the front edge (212) of each blade (21) and the rear wall plate (11). The cleaning machine has a good hot air outlet effect, and the drying efficiency of the cleaning machine can be improved.

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] In the cleaning machine product, the inner cavity of the cleaning machine is blown during the drying stage to improve the drying effect of the cleaning machine.

[0003] In the related art, a heating tube and a fan are provided in the washing machine to generate hot air for drying. However, the positional relationship between the heating tube and the fan in the prior art has problems with the hot air outlet efficiency and the heat cannot be fully utilized. Utility Model Content

[0004] The present application hopes to provide a cleaning machine, which can more efficiently take away the heat of the heating section by surrounding the circumference of the impeller, thereby making the heat in the inner cavity more uniform, thereby improving the drying efficiency of the cleaning machine.

[0005] The utility model provides a cleaning machine, comprising:

[0006] The inner liner 1 has a rear wall panel 11;

[0007] An impeller is rotatably mounted on the rear wall plate 11, with the rotation axis of the impeller extending forward and backward, and the impeller has at least two blades 21 spaced apart in the circumferential direction;

[0008] The heating pipe 6 is provided on the rear wall plate 11 and has a heating section 61 arranged in a curved manner;

[0009] The heating section 61 surrounds the circumference of the impeller and is located between the leading edge 212 of each blade 21 and the rear wall plate 11 .

[0010] As an implementable manner, the heating section 61 is arranged adjacent to the root 211 of each blade 21 .

[0011] As a feasible method, the impeller is a centrifugal impeller, and the impeller also includes a base plate 22, the base plate 22 is disc-shaped, and each blade 21 extends along the radial direction of the base plate 22 and is arranged at intervals in the circumferential direction of the base plate 22, leaving a gap between the heating section 61 and the outer edge 214 of each blade 21.

[0012] As a feasible method, each blade 21 has a gap on the inner side and the center of the bottom plate 22 to form the air inlet area A1 of the impeller, and the inner side edge of each blade 21 adjacent to the air inlet area A1 has a chamfer inclined inward from front to back at the leading edge 212, and the projections of the heating section 61 and the chamfer of the impeller on the same vertical plane do not overlap.

[0013] As a feasible method, the center of the cross section of the heating section 61 is located below the range of the position 213 corresponding to half the height of the blade 21; wherein the height of the blade 21 is the distance between the root 211 and the leading edge 212 of the blade 21 along the direction of the rotation axis of the impeller.

[0014] As an implementable manner, the center 611 of the cross section of the heating section 61 is located within the range between the root 211 of the blade 21 and the position 213 corresponding to half the height of the blade 21 .

[0015] As an achievable manner, the cross section of the heating section 61 is circular, and the diameter of the circle is greater than or equal to one third of the height of the blade 21 and less than or equal to one half of the height of the blade 21 .

[0016] As a feasible manner, the heating section 61 is an open ring, and the inner diameter of the open ring is 1.05-1.8 times of the preset distance; wherein the preset distance is the distance between the outer edge of the blade 21 and the center of the bottom plate.

[0017] As a feasible method, a fan is also included, which includes a driver and an impeller. The driver is installed on the rear wall plate 11 and is located outside the inner tank. The output shaft of the driver passes through the rear wall plate 11, and the impeller is installed on the output shaft.

[0018] As a feasible method, the cleaning machine also includes a protective cover 5, the protective cover 5 has a cavity 501, the cavity 501 includes a first sub-cavity 51 and a second sub-cavity 52 arranged side by side laterally along the rear wall panel 11, and a hot air device is arranged in at least one of the first sub-cavity 51 and the second sub-cavity 52.

[0019] The cleaning machine of the present invention has a heating section that surrounds the circumference of the impeller and is located between the leading edge of each blade and the rear wall plate, which is beneficial for the heat to be blown out efficiently during the rotation of the impeller, thereby making the heat in the inner tank evenly distributed and improving the drying efficiency of the cleaning machine; and the heating section is located between the leading edge of the blade and the rear wall plate, which is beneficial for the impeller to not be scratched during rotation, ensuring the normal use of the impeller and extending its service life. 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 perspective view of a first cleaning machine (door not shown) provided in an embodiment of the present utility model;

[0022] Figure 2 A perspective view of a first cleaning machine (door and protective cover not shown) provided in an embodiment of the present utility model;

[0023] Figure 3 A cross-sectional view of the first protective cover and the rear wall panel after assembly provided by an embodiment of the present utility model;

[0024] Figure 4 for Figure 3 A partial enlarged view of middle A;

[0025] Figure 5 A schematic diagram of the assembly of the fan and the heating pipe in the first cleaning machine provided by the embodiment of the utility model;

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

[0027] Figure 7 A perspective view of a second cleaning machine (door not shown) provided in an embodiment of the present utility model;

[0028] Figure 8 A schematic structural diagram of a second protective cover provided in an embodiment of the present utility model;

[0029] Figure 9 A three-dimensional diagram of a separator provided in an embodiment of the present utility model.

[0030] In the figure,

[0031] Inner container 1, rear wall panel 11, fan 2, blade 21, root 211, leading edge 212, position corresponding to half of the height 213, outer edge 214, air inlet area A1, bottom plate 22, heating tube 6, heating section 61, water pipe 4;

[0032] 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;

[0033] 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 ;

[0034] The recessed portion 53 , the avoidance groove 54 , and the partition 55 . DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] At least see Figure 1-5 As shown, the cleaning machine of the embodiment of the present application includes:

[0038] The inner liner 1 has a rear wall panel 11;

[0039] An impeller is rotatably mounted on the rear wall plate 11, with the rotation axis of the impeller extending forward and backward, and the impeller has at least two blades 21 spaced apart in the circumferential direction;

[0040] The heating pipe 6 is arranged on the rear wall plate 11 and has a curved heating section 61 . The heating section 61 surrounds the circumference of the impeller and is located between the leading edge 212 of each blade 21 and the rear wall plate 11 .

[0041] It should be noted that the cleaning machine can be but is not limited to a dishwasher, which can be used to clean kitchen utensils and other items such as bowls, cutlery, and dishes. Of course, the cleaning machine of the embodiment of the present application can also have functions such as disinfection and drying, freeing hands and improving the user experience.

[0042] Among them, the inner tank 1 is used as the main body of the washing machine to accommodate and place kitchen utensils or other items to be cleaned; in actual application, in order to improve the cleaning ability of the dishwasher, the inner tank 1 is arranged in the up and down directions (such as Figure 1 At least two spray arms and a water pipe 4 are provided (in the direction shown in the figure), and are connected through the water pipe 4 provided in the inner tank to supply water to different spray arms.

[0043] The rear wall panel 11 is the panel located behind the inner container 1. To achieve the cleaning, drying, and disinfecting functions of the washing machine, the rear wall panel 11 is typically provided with functional components such as a hot air device, wherein the hot air device includes a fan 2 and a heating tube 6. The rear wall panel 11 and the inner container 1 can be integrally formed. Of course, the rear wall panel 11 and the inner container can also be connected by any other connection method, such as but not limited to welding, riveting, or clamping, etc., which is not specifically limited in the embodiments of the present application.

[0044] It is understood that the fan 2 drives air circulation by rotating, thereby achieving the air drying function. The fan 2 includes an impeller, which is rotatably mounted on the rear wall plate 11 by any connection method, such as but not limited to the impeller being fixedly mounted on a rotating shaft, which is mounted on the rear wall plate 11; wherein the rotating shaft of the impeller extends forward and backward (such as Figure 1 As shown), it is convenient to install the impeller and to blow the wind toward the rear wall of the inner tank 1;

[0045] The blades 21 are evenly spaced around the circumference of the impeller to drive air circulation during rotation. Each blade 21 can be, but is not limited to, flat or arc-shaped. At least two blades 21 are radially arranged around the circumference of the impeller, which is conducive to reliably increasing the air output.

[0046] Among them, the heating pipe 6 is installed on the rear wall panel 11. The heating pipe 6 usually includes a mounting section and a heating section 61. The mounting section is used to install the heating pipe 6 on the rear wall panel 11. The mounting section and the rear wall panel 11 can be connected by any mounting method, such as but not limited to welding, flange connection, etc. In a preferred embodiment, by obliquely installing the mounting section on the rear wall panel 11, it is beneficial to reduce the size of the rear of the cleaning machine, thereby reducing the depth of the cleaning agent; the heating section 61 is used to heat the air, and under the action of the impeller, the hot air is sent into the interior of the inner tank 1 to realize the drying function of the cleaning machine.

[0047] It should be noted that in the embodiment of the present application, the heating section 61 surrounds the circumference of the impeller. When the wind is centrifugally thrown out from the blades, the heating section 61 is located between the leading edge 212 of each blade and the rear wall panel 11, which is beneficial to saving installation space. At the same time, it can enable the wind to more efficiently carry away the heat generated by the heating section 61, thereby making the heat of the inner liner 1 more uniform.

[0048] It is understandable that in order to ensure the strength of the blade 21 and to reliably drive the wind flow, the blade 21 usually has a certain height in the front-to-back direction; Figure 4 As shown, the leading edge 212 of the blade 21 refers to the plane where the edge of the blade 21 away from the rear wall plate 11 is located in the front-to-back direction.

[0049] The cleaning machine of the embodiment of the present application solves the problem of poor drying efficiency in conventional cleaning machines. In the embodiment of the present application, the heating section surrounds the circumference of the impeller and is located between the leading edge of each blade and the rear wall plate. This facilitates efficient heat dissipation during impeller rotation, thereby evenly distributing heat within the inner container and improving the drying efficiency of the cleaning machine. Furthermore, the heating section is located between the leading edge of the blade and the rear wall plate, which helps prevent scratches during impeller rotation, ensuring normal use of the impeller and extending its service life.

[0050] In a preferred embodiment, Figure 3 and 4 As shown, the heating section 61 is arranged adjacent to the root 211 of each blade 21 .

[0051] The root 211 of the blade 21 refers to a region where the edge of the blade 21 close to the rear edge 11 is located in the front-to-back direction.

[0052] In this embodiment, since most of the wind generated by the impeller rotation is concentrated in the lower position during the rotation of the impeller, the heating section 61 is set near the root of the blade 21, which is conducive to more efficiently taking away the heat of the heating section 61, making the heat in the inner tank 1 more uniform.

[0053] In some embodiments, the impeller is a centrifugal impeller, and the impeller also includes a base plate 22, the base plate 22 is disc-shaped, and each blade 21 extends radially along the base plate 22 and is arranged at intervals in the circumferential direction of the base plate 22. A gap is left between the heating section 61 and the outer edge 214 of each blade 21.

[0054] The outer edge 214 of the blade 21 refers to the edge of the blade 21 away from the rotation axis in the extending direction thereof.

[0055] The impeller in this embodiment is conducive to improving the air outlet efficiency, and the bottom plate 22 is mainly used to support and install the blades 21. A gap is left between the heating section 61 and the outer edge 214 of the blade 21, which is conducive to avoiding interference between the heating section 61 and the blade 21, thereby avoiding scratching the heating section 61 during the rotation of the impeller, thereby ensuring that the heating section 61 and the blade 21 can work normally and extend their service life.

[0056] It is understandable that a gap may be left between the heating section 61 and the outer edge 214 of each blade 21 in the front-to-back direction; of course, a gap may be left between the heating section 61 and the outer edge 214 of each blade 21 in the left-right direction or the up-down direction.

[0057] As a feasible method, each blade 21 has a gap on the inner side and the center of the bottom plate 22 to form the air inlet area A1 of the impeller, and the inner side edge of each blade 21 adjacent to the air inlet area A1 has a chamfer inclined inward from front to back at the leading edge 212, and the projections of the heating section 61 and the chamfer of the impeller on the same vertical plane do not overlap.

[0058] In this embodiment, the air inlet area is used to inhale external air, and the chamfer of the leading edge 212 of the blade 21 is beneficial to reducing air flow resistance and improving air outlet efficiency; and the projections of the heating section 61 and the impeller chamfer on the same vertical plane do not overlap, which is beneficial to improving heating efficiency, so that the wind can more efficiently take away the heat of the heating section 61.

[0059] Furthermore, in some embodiments, the center of the cross section of the heating section 61 is located below the range of the position 213 corresponding to half the height of the blade 21; wherein the height of the blade 21 is the distance between the root 211 and the leading edge 212 of the blade 21 along the direction of the rotation axis of the impeller.

[0060] In this embodiment, the heating section 61 is located at a position where the blade 21 is close to the rear wall plate 11, which helps the wind to more efficiently carry away the heat of the heating tube, making the heat in the inner tank 1 more uniform.

[0061] It should be noted that the cross-sectional center of the heating section 61 is located below the range of position 213 corresponding to half the height of the blade 21, but the cross-sectional center of the heating section 61 is not lower than the root of the blade 21, which helps to prevent heat from being carried away by the wind.

[0062] In a preferred embodiment, Figure 4 As shown, the center 611 of the cross section of the heating section 61 is located between the root 211 of the blade 21 and a position 213 corresponding to half the height of the blade 21 .

[0063] In this embodiment, since heat flows upward, the position of the heating section 61 is conducive to improving the hot air outlet efficiency, while improving the drying efficiency of the washing machine and avoiding heat loss.

[0064] As an achievable manner, the cross section of the heating section 61 is circular, and the diameter of the circle is greater than or equal to one third of the height of the blade 21 and less than or equal to one half of the height of the blade 21 .

[0065] The cross-sectional diameter of the heating section 61 in this embodiment is conducive to ensuring that sufficient heat is provided while ensuring that the heat can be reliably carried away by the wind.

[0066] When the diameter of the circle is less than one-third of the height of the blade 21, the cross-sectional diameter of the heating section 61 is too small to provide sufficient heat. When the diameter of the circle is greater than one-half of the height of the blade, the heat cannot be reliably carried away by the wind.

[0067] In some embodiments, the heating section 61 is an open ring, and the inner diameter of the open ring is 1.05-1.8 times the preset distance; wherein the preset distance is the distance between the outer edge of the blade 21 and the center of the bottom plate.

[0068] In this embodiment, the heating section 61 is an open ring. The size of the inner diameter of the open ring is conducive to ensuring that the wind can reliably carry away heat, while avoiding interference between the heating section 61 and the blades 21, ensuring the normal operation of the heating section 61 and the blades 21 and extending their service life.

[0069] Specifically, the inner diameter of the non-closed loop of the heating section 61 can be, but is not limited to, 1.05 times, 1.2 times, 1.3 times, 1.4 times, 1.5 times, 1.6 times, 1.7 times, or 1.8 times the preset distance. When the inner diameter of the non-closed loop of the heating section 61 is less than 1.05 times the preset distance, the impeller is likely to rub against the heating section 61 during rotation, and the wind cannot effectively remove heat from the heating section. When the inner diameter of the non-closed loop of the heating section 61 is greater than 1.8 times the preset distance, the distance between the heating section 61 and the blades is too far, and the wind is less efficient in removing heat from the heating section 61.

[0070] In some embodiments, the cleaning machine further includes a fan, and the fan 2 includes a driver and an impeller. The driver is mounted on the rear wall plate 11 and is located outside the inner tank. The output shaft of the driver passes through the rear wall plate 11, and the impeller is mounted on the output shaft.

[0071] The driver can be any type of motor, such as, but not limited to, a servo motor. The driver can be used to drive the impeller, thereby driving the impeller to deliver hot air to the interior of the inner container 1, thereby enabling the washing machine to achieve a drying function. In a preferred embodiment, the driver is a flat motor with a relatively thin structure, which helps save installation space and facilitates reducing the size of the installation space defined between the rear wall plate and the rear cover plate of the washing machine during the processing and design of the washing machine. This helps to reduce the rear dimensions of the washing machine, further reducing the depth of the washing machine, and facilitating the installation of the washing machine.

[0072] As an achievable implementation method, Figure 1-9 As shown, the cleaning machine also includes a protective cover 5, which has a cavity 501. The cavity 501 includes a first sub-cavity 51 and a second sub-cavity 52 arranged side by side horizontally along the rear wall plate 11, and a hot air device is arranged in at least one of the first sub-cavity 51 and the second sub-cavity 52.

[0073] It is understandable that the protective cover 5 is mounted on the rear wall 11 of the inner liner 1 and is located inside the inner liner 1. Since the cleaning machine is usually equipped with functional components such as a hot air device and an ultraviolet lamp on the rear wall 11 in order to achieve functions such as drying and disinfection, the protective cover 5 is at least provided on the functional components such as the hot air device and the ultraviolet lamp in order to protect the functional components such as the hot air device and the ultraviolet lamp. The protective cover 5 can be detachably connected to the rear wall 11. For example, the protective cover 5 is connected to the rear wall 11 by a buckle. Of course, the protective cover 5 can also be connected to the rear wall 11 by a concave-convex fit. The embodiments of the present application do not limit this. The protective cover 5 can be detachably connected, which is conducive to convenient disassembly and assembly, and at the same time facilitates the inspection and maintenance of other functional components such as the hot air device and the ultraviolet lamp.

[0074] It is also understood that the cover opening of the protective cover 5 refers to the area facing the rear wall panel 11 after the protective cover 5 is placed on the rear wall panel 11, and the cover opening is used to connect the protective cover 5 to the rear wall panel 11. Since the cleaning machine generates wastewater and / or residue during the cleaning process, a drainage gap is formed between the cover opening of the protective cover 5 and the rear wall panel 11. The drainage gap facilitates the discharge of wastewater and / or residue, thereby ensuring that the wastewater and / or residue do not remain inside the protective cover, which helps to prevent bacterial growth, improve the environment of the entire inner tank, and at the same time ensure the normal use of functional components such as the hot air device and ultraviolet lamp, extending their service life.

[0075] In summary, the washing machine of the embodiment of the present application has the heating section 61 surrounding the circumference of the impeller and located between the leading edge 212 of each blade 21 and the rear wall plate 11. This is conducive to efficiently blowing out heat during the rotation of the impeller, thereby evenly distributing the heat in the inner tank 1 and improving the drying efficiency of the washing machine. In addition, the heating section 61 is located between the leading edge 212 of the blade 21 and the rear wall plate 11, which is conducive to preventing the impeller from being scratched during rotation, ensuring normal use of the impeller and extending its service life.

[0076] Moreover, the center of the cross section of the heating section 61 is located below the range of the position 213 corresponding to half the height of the blade 21, which is conducive to the wind taking away the heat of the heating tube more efficiently, making the heat in the inner tank 1 more uniform.

[0077] In some embodiments, the protective cover 5 includes an end wall and a side wall, and the side wall is arranged around the circumference of the end wall.

[0078] like Figure 1-6 As shown, the protective cover 5 forms a cover opening of the cavity 501 on the first side, and forms an end wall of the cavity 501 on the second side, and the first side and the second side are arranged opposite to each other.

[0079] The end wall is recessed from the second side to the first side to form a recessed portion 53 . The recessed portion 53 extends in the same direction as the avoidance groove 54 and divides the cavity 501 into a first sub-cavity 51 and a second sub-cavity 52 that are arranged side by side and independent of each other.

[0080] In other embodiments, Figure 7-9 As shown, the partition 55 is connected to the protective cover 5 and is at least partially located in the cavity 501, and is used to divide the cavity 501 into a first sub-cavity 51 and a second sub-cavity 52 arranged side by side, and the partition 55 is arranged close to the cover opening of the cavity 501 to leave a gap between it and the end wall of the cavity 501 to form an air duct.

[0081] Among them, the separator 55 and the protective cover body can be welded, the separator 55 and the protective cover body can be threaded, the separator 55 and the protective cover body can be plugged, the separator 55 and the protective cover body can be snap-connected, etc., which are not listed one by one in this embodiment.

[0082] In one embodiment, the partition 55 is disposed within the cavity 501, with a gap between the partition 55 and the end wall, which can serve as an air duct. In another embodiment, the partition 55 is disposed within the cavity 501, with a gap between the partition 55 and the side wall, which can serve as an air duct. In yet another embodiment, the partition 55 is disposed within the cavity 501, with no gap between the partition 55 and the end wall or side wall, and a through hole is provided in the partition 55, which can serve as an air duct.

[0083] It is understood that the hot air device is located in the first sub-cavity 51 and is provided with an air inlet and an air outlet. Another hot air device can be provided in the second sub-cavity 52, wherein the hot air device includes a fan 2 and a heating tube 6, with the heating section 61 of the heating tube 6 surrounding the fan 2. Alternatively, only a fan 2 can be provided in the second sub-cavity 52. ​​Alternatively, a UV lamp can be provided in the second sub-cavity 52. ​​Alternatively, no mechanism can be provided in the second sub-cavity 52, and the structure can be the same as the cavity 501.

[0084] In the embodiment of the present application, the protective cover 5 having the first sub-cavity 51 and the second sub-cavity 52 can be simultaneously installed to cover two hot air devices; or simultaneously install the hot air device and the blower 2; or simultaneously install the hot air device and the ultraviolet lamp; or install the hot air device to form a single cavity 501. This avoids the need to install the protective cover 5 separately, thereby improving the assembly efficiency of the cleaning machine.

[0085] For example, Figure 1-Figure 5 As shown, the hot air device is located in the first sub-cavity 51 and the ultraviolet lamp is located in the second sub-cavity 52 for illustration:

[0086] At least Figure 5 As shown, the protective cover 5 forms a cover opening of the cavity 501 on the first side, and forms an end wall of the cavity 501 on the second side, and the first side and the second side are arranged opposite to each other.

[0087] The end wall is recessed from the second side to the first side to form a recessed portion 53 . The recessed portion 53 extends in the same direction as the avoidance groove 54 and divides the cavity 501 into a first sub-cavity 51 and a second sub-cavity 52 that are arranged side by side and independent of each other.

[0088] like Figure 5 As shown, a recessed portion 53 is provided in the middle of the protective cover 5, 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 any interference between the fan 2, the heating tube 6, and the UV lamp.

[0089] 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 in the vertical direction and pass through the protective cover 5. In other words, 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.

[0090] 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 .

[0091] like Figure 3 、 5 As shown in FIG6 , the side walls include a first left side wall 514 , a first lower side wall 512 , a first right side wall 513 , a first upper side wall 511 , a second left side wall 524 , a second lower side wall 522 , a second right side wall 523 and a second upper side wall 521 .

[0092] 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.

[0093] 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.

[0094] By providing the recessed portion 53, the overall rigidity and strength of the protective cover 5 can also 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 5, and thus 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 against the cavity wall of the first sub-cavity 51 during rotation, or preventing the second sub-cavity 52 from deforming and contacting the ultraviolet lamp installed therein, causing damage to the ultraviolet lamp.

[0095] The protective cover 5 can be made of, but is not limited to, stainless steel.

[0096] The protective cover 5 can be made of, but is not limited to, a sheet metal process or a stamping process.

[0097] The protective cover 5 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 5 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 facilitating processing, and helping to reduce production costs.

[0098] In addition, if Figure 1 、 Figure 2 and Figure 6 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.

[0099] 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.

[0100] 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 comprising: An inner liner (1), wherein the inner liner (1) has a rear wall plate (11); An impeller is rotatably disposed on the rear wall plate (11), with the rotation axis of the impeller extending forward and backward, and the impeller has at least two blades (21) arranged at intervals in the circumferential direction; A heating pipe (6) is arranged on the rear wall plate (11), and the heating pipe has a heating section (61) arranged in a curved manner; Its characteristics are: The heating section (61) surrounds the circumference of the impeller and is located between the leading edge (212) of each blade (21) and the rear wall plate (11).

2. The cleaning machine according to claim 1, characterized in that The heating section (61) is arranged adjacent to the root (211) of each blade (21).

3. The cleaning machine according to claim 2, characterized in that The impeller is a centrifugal impeller, and the impeller further comprises a bottom plate (22), the bottom plate (22) is disc-shaped, the blades (21) extend along the radial direction of the bottom plate (22), and are arranged at intervals in the circumferential direction of the bottom plate (22), and a gap is left between the heating section (61) and the outer edge (214) of each blade (21).

4. The cleaning machine according to claim 3, characterized in that Each of the blades (21) is spaced apart from the center of the bottom plate (22) on the inner side to form an air inlet area (A1) of the impeller, and the inner side edge of each of the blades (21) adjacent to the air inlet area (A1) has a chamfer inclined inward from front to back at the leading edge (212), and the projections of the heating section (61) and the chamfer of the impeller on the same vertical plane do not overlap.

5. The cleaning machine according to any one of claims 1 to 4, characterized in that: The center of the cross section of the heating section (61) is located below the range of a position (213) corresponding to one-half the height of the blade (21); wherein the height of the blade (21) is the distance between the root (211) and the leading edge (212) of the blade (21) along the direction of the rotation axis of the impeller.

6. The cleaning machine according to claim 5, characterized in that The center (611) of the cross section of the heating section (61) is located within the range between the root (211) of the blade (21) and a position (213) corresponding to half the height of the blade (21).

7. The cleaning machine according to claim 5, characterized in that The cross section of the heating section (61) is circular, and the diameter of the circle is greater than or equal to one third of the height of the blade (21) and less than or equal to one half of the height of the blade (21).

8. The cleaning machine according to claim 3, characterized in that The heating section (61) is an open ring, and the inner diameter of the open ring is 1.05-1.8 times the preset distance; wherein the preset distance is the distance between the outer edge of the blade (21) and the center of the bottom plate.

9. The cleaning machine according to any one of claims 1 to 4, characterized in that: It also includes a fan, which includes a driver and the impeller. The driver is mounted on the rear wall plate (11) and is located outside the inner container. The output shaft of the driver passes through the rear wall plate (11), and the impeller is mounted on the output shaft.

10. The cleaning machine according to any one of claims 1 to 4, characterized in that: The protective cover (5) further comprises a cavity (501), wherein the cavity (501) comprises a first sub-cavity (51) and a second sub-cavity (52) arranged side by side transversely along the rear wall plate (11), and a hot air device is arranged in at least one of the first sub-cavity (51) and the second sub-cavity (52).

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