Cleaning machine
By magnetically connecting the motor drive shaft and the impeller shaft, the problem of motor damage caused by water overflow is solved, achieving efficient drying of the cleaning machine and extending the motor's lifespan.
Patent Information
- Application Number
- CN202422922103.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The motor drive shaft of existing cleaning machines passes through the gap between the inner tanks, causing water to leak out, which can damage the motor or shorten its service life.
The drive shaft of the motor and the shaft of the impeller are connected by magnetic attraction, avoiding the need to open through holes in the inner liner. The motor is fixed outside the inner liner, and the impeller is installed in the installation space inside the inner liner. The air duct is designed through the space enclosed by the protective cover and the inner liner.
The processing steps for the inner liner have been simplified, preventing water from overflowing into the motor, extending the motor's lifespan, and improving drying efficiency.
Smart Images
Figure CN223585907U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of kitchen appliance technology, specifically to a cleaning machine. Background Technology
[0002] Dishwashers or washer-dryer combos, which have cleaning functions, primarily free up users' hands by automatically cleaning tableware, thereby improving their quality of life. Common dishwashing machines typically include an inner tank and a drying unit. The inner tank forms a cleaning chamber to hold the tableware, while the drying unit blows hot air into the cleaning chamber to quickly dry the cleaned tableware, making it convenient for users to use.
[0003] In related technologies, the drying device of a washing machine includes a motor, an impeller, and a heater. The motor's drive shaft is connected to the impeller and drives it to rotate, drawing air from the washing chamber to the heater and then returning it to the washing chamber. To prevent water in the washing chamber from damaging or short-circuiting the motor, the motor is usually mounted outside the inner tank, with only a mounting hole on the inner tank for the motor's drive shaft to extend into it. However, to ensure smooth rotation of the motor's drive shaft, the diameter of the mounting hole is usually larger than the diameter of the drive shaft. This allows water from inside the inner tank to potentially leak through the gap between the mounting hole and the drive shaft into the motor, potentially damaging it or affecting its lifespan.
[0004] Therefore, there is an urgent need to provide a cleaning machine that can extend the service life of the motor to solve the above problems. Utility Model Content
[0005] The purpose of this application is to solve or at least alleviate some or all of the aforementioned problems. Therefore, the purpose of this application is to provide a cleaning machine, wherein the cleaning machine can be a dishwasher or a combined washing and disinfection machine.
[0006] To achieve the above objectives, this application adopts the following technical solution:
[0007] This application provides a cleaning machine, comprising:
[0008] Inner liner;
[0009] A protective cover is fixed to the inner liner and surrounds the inner wall of the inner liner to form an installation space. The protective cover has an air inlet and an air outlet that communicate with the installation space.
[0010] A fan includes a motor and an impeller. The motor is fixed to the inner liner, and the drive shaft of the motor is located outside the inner liner. The impeller includes a rotating shaft and blades fixedly connected to the rotating shaft. The rotating shaft is rotatably mounted in the installation space about its axis and is connected to the drive shaft of the motor by magnetic attraction.
[0011] As an optional embodiment of the cleaning machine, the fan further includes a first magnetic suction component and a second magnetic suction component capable of being magnetically connected to the first magnetic suction component. The first magnetic suction component is installed on the end of the drive shaft of the motor facing the rotating shaft, and the second magnetic suction component is installed on the end of the rotating shaft facing the drive shaft of the motor.
[0012] As an optional embodiment of the cleaning machine, the cleaning machine further includes a first limiting ring and a second limiting ring. The first limiting ring is installed on the inner wall of the inner tank, and the second limiting ring is installed on the inner wall of the protective cover and is coaxially arranged with the first limiting ring. One end of the rotating shaft is rotatably engaged with the first limiting ring, and the other end of the rotating shaft is rotatably engaged with the second limiting ring.
[0013] As an optional feature of the cleaning machine, the maximum distance between the first limiting ring and the second limiting ring is greater than the length of the rotating shaft.
[0014] As an optional embodiment of the cleaning machine, the impeller further includes a disc, which is fixedly connected to and coaxially arranged with the rotating shaft, and at least two blades are fixed to the periphery of the disc and evenly spaced.
[0015] As an optional feature of the cleaning machine, the disc has annular reinforcing ribs protruding towards the inner wall of the inner tank at a position near the rotating shaft.
[0016] As an optional embodiment of the cleaning machine, the cleaning machine further includes a mounting bracket for mounting the motor. The mounting bracket has a plurality of first fixing holes, and the inner tank has second fixing holes that correspond one-to-one with the first fixing holes. The mounting bracket is fixed to the inner tank by fasteners passing through the first fixing holes and the second fixing holes.
[0017] As an optional feature of the cleaning machine, one of the mounting bracket and the inner tank has a limiting protrusion, and the other has a limiting recess that mates with the limiting protrusion.
[0018] As an optional feature of the cleaning machine, the mounting bracket also has several weight-reducing holes.
[0019] As an optional feature of the cleaning machine, the cleaning machine further includes a heater, which is installed on the inner wall of the inner tank and located in the installation space, and the heater is arranged around the impeller.
[0020] The beneficial effects of this application are as follows:
[0021] The cleaning machine provided in this application includes an inner tank, a protective cover, and a fan. The protective cover is fixed to the inner tank and forms an installation space by enclosing the inner wall of the inner tank. The protective cover has an air inlet and an air outlet that communicate with the installation space. The fan includes a motor and an impeller. The motor is fixed to the inner tank, and the drive shaft of the motor is located outside the inner tank. The impeller includes a rotating shaft and blades fixedly connected to the rotating shaft. The rotating shaft is rotatably mounted in the installation space around its axis and is connected to the drive shaft of the motor by magnetic attraction. Compared with the solution where the drive shaft of the motor passes through the inner tank and is mechanically connected to the rotating shaft, there is no need to open a through hole in the inner tank, thereby preventing the cleaning water in the inner tank from overflowing from the through hole to the motor of the fan. This not only simplifies the processing of the inner tank but also extends the service life of the motor. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.
[0023] Figure 1 This is a partial structural schematic diagram of the cleaning machine provided in the embodiments of this application.
[0024] Figure 2 This is an exploded view of some components of the cleaning machine provided in the embodiments of this application.
[0025] Figure 3 This is a cross-sectional schematic diagram of the drying device and protective cover provided in the embodiments of this application.
[0026] Figure 4 yes Figure 3 A partial enlarged view of the drying device and its protective cover.
[0027] Figure 5 This is a cross-sectional schematic diagram of the impeller provided in an embodiment of this application.
[0028] Figure 6 This is a structural schematic diagram of the motor and mounting bracket provided in the embodiments of this application.
[0029] Figure 7 This is an exploded view of the motor, mounting bracket, and inner liner provided in the embodiments of this application.
[0030] Figure label:
[0031] 1. Inner liner; 11. Second fixing hole; 12. Limiting recess; 13. Recess;
[0032] 2. Protective cover; 21. Air inlet; 22. Air outlet;
[0033] 3. Fan; 31. Motor; 310. Drive shaft; 32. Impeller; 321. Rotating shaft; 322. Blade; 323. Disc; 3231. Annular reinforcing rib;
[0034] 4. First limiting ring;
[0035] 5. Second limiting ring;
[0036] 6. Mounting bracket; 61. First fixing hole; 62. Limiting protrusion; 63. Weight reduction hole; 64. Protrusion;
[0037] 7. Heater. Detailed Implementation
[0038] Before explaining any implementation of this application in detail, it should be understood that this application is not limited to its application to the structural details and component arrangements set forth in the following description or shown in the above drawings.
[0039] In this application, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0040] In this application, the term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "and / or" relationship.
[0041] In this application, the terms "connection," "combination," "coupling," and "installation" can refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, a direct connection refers to two parts or components being connected together without the need for an intermediary, while an indirect connection refers to two parts or components each being connected to at least one intermediary, with the connection achieved through the intermediary. Furthermore, "connection" and "coupling" are not limited to physical or mechanical connections or couplings, but can also include electrical connections or couplings.
[0042] In this application, those skilled in the art will understand that relative terms (e.g., “about,” “approximately,” “basically,” etc.) used in conjunction with quantities or conditions are to include the values and have the meaning indicated by the context. For example, such relative terms include at least the degree of error associated with the measurement of a particular value, tolerances associated with the particular value due to manufacturing, assembly, use, etc. Such terms should also be considered as disclosing a range defined by the absolute values of the two endpoints. Relative terms may refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values not using relative terms should also be disclosed as specific values with tolerances. Furthermore, “basically” when expressing relative angular relationships (e.g., substantially parallel, substantially perpendicular) may refer to a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) added to or subtracted from the indicated angle.
[0043] In this application, those skilled in the art will understand that the function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, the function performed by a part can also be performed by one part, one component, or a combination of multiple parts.
[0044] In this application, the directional terms "upper," "lower," "left," "right," "front," and "rear" are used to describe the orientation and positional relationships shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when an element is mentioned as being connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected through an intermediate element. It should also be understood that directional terms such as upper side, lower side, left side, right side, front side, and rear side not only represent positive orientation but can also be understood as lateral orientation. For example, "below" can include directly below, lower left, lower right, lower front, and lower rear.
[0045] Figure 1 This is a partial structural schematic diagram of the cleaning machine provided in the embodiments of this application. Figure 2 An exploded view of some components of the cleaning machine provided in an embodiment of this application is shown. Figures 1 to 2 As shown, the washing machine provided in this application includes a housing, an inner liner 1, and a door (not shown in the figure). The inner liner 1 is installed in the housing and has an opening for taking out and putting in tableware. The door is rotatably connected to the side of the opening to open and close the opening. When the opening is closed, the door can close the inner liner 1 to form a washing chamber to accommodate tableware.
[0046] The washing machine also includes a protective cover 2 and a drying device. The protective cover 2 is located inside the washing chamber and is fitted over the inner wall of the inner liner 1 to form an installation space. The protective cover 2 has an air outlet 22 that connects the installation space and the washing chamber, and an air inlet 21 is provided on the end wall of the protective cover 2 opposite to the inner wall of the inner liner 1. The drying device is used to draw air from the washing chamber into the installation space, heat it, and then return the hot air to the washing chamber to dry the washed tableware, reduce bacterial growth, and improve product safety.
[0047] Figure 3 A cross-sectional schematic diagram of the drying apparatus and protective cover 2 provided in an embodiment of this application is shown. Figure 3 Combination Figure 2 As shown, the drying device includes a fan 3 and a heater 7. The heater 7 is installed on the inner wall of the inner liner 1 and located in the installation space. The fan 3 is used to draw air from the cleaning chamber into the installation space from the air inlet 21 and discharge it into the cleaning chamber from the air outlet 22 after being heated by the heater 7. This hot air can dry the cleaned tableware to prevent bacteria from growing on the tableware.
[0048] The fan 3 includes a motor 31 and an impeller 32. The motor 31 is fixed to the inner liner 1 and is used to drive the impeller 32 to rotate. The impeller 32 is rotatably mounted in the installation space around its own axis. The heater 7 is arranged around the periphery of the impeller 32, so that the airflow generated by the rotation of the impeller 32 can be fully heated, which can improve the drying efficiency of the drying device.
[0049] In this embodiment, the drive shaft 310 of the motor 31 is located outside the inner liner 1. The impeller 32 includes a rotating shaft 321 and blades 322 fixedly connected to the rotating shaft 321. The rotating shaft 321 is rotatably mounted in the installation space around its axis and is connected to the drive shaft 310 of the motor 31 by magnetic attraction. Compared with the scheme where the drive shaft 310 of the motor 31 passes through the inner liner 1 and is mechanically connected to the rotating shaft 321, there is no need to open a through hole in the inner liner 1. This can prevent the cleaning water in the inner liner 1 from overflowing from the through hole to the motor 31 of the fan 3. This not only simplifies the processing steps of the inner liner 1, but also extends the service life of the motor 31.
[0050] In one embodiment, the fan 3 further includes a first magnetic attractor and a second magnetic attractor capable of magnetically connecting with the first magnetic attractor. The first magnetic attractor is installed at the end of the drive shaft 310 of the motor 31 facing the rotating shaft 321, and the second magnetic attractor is installed at the end of the rotating shaft 321 facing the drive shaft 310 of the motor 31. Through the magnetic attraction effect between the first and second magnetic attractors, the connection between the drive shaft 310 of the motor 31 and the rotating shaft 321 of the impeller 32 can be realized, thereby ensuring that the impeller 32 rotates as the drive shaft 310 of the motor 31 rotates.
[0051] It should be noted that, because the drive shaft 310 of the motor 31 and the rotating shaft 321 of the impeller 32 are magnetically connected, unlike the direct snap-fit or fixed connection between the drive shaft 310 of the motor 31 and the rotating shaft 321 of the impeller 32, the impeller 32 and the drive shaft 310 of the motor 31 do not rotate synchronously. Furthermore, when the motor 31 is turned off, the impeller 32 can continue to rotate for a period of time due to its own inertia. This not only dissipates heat from the heating element but also provides a draft effect, improving the drying efficiency of the drying device. When the impeller 32 is stuck and cannot rotate, the motor 31 will not jam, preventing damage due to overload.
[0052] Figure 4 yes Figure 3 A partial enlarged view of the drying device and protective cover 2. Figure 5 This is a cross-sectional schematic diagram of the impeller 32 provided in an embodiment of this application. Figures 4 to 5 As shown, the cleaning machine also includes a first limiting ring 4 and a second limiting ring 5. The first limiting ring 4 is installed on the inner wall of the inner tank 1, and the second limiting ring 5 is installed on the inner wall of the protective cover 2 and is coaxially arranged with the first limiting ring 4. One end of the rotating shaft 321 is rotatably engaged with the first limiting ring 4, and the other end of the rotating shaft 321 is rotatably engaged with the second limiting ring 5. With this arrangement, the impeller 32 can be rotatably installed in the installation space around its own axis, ensuring that the impeller 32 can rotate stably.
[0053] Furthermore, the maximum distance between the first limiting ring 4 and the second limiting ring 5 is greater than the length of the rotating shaft 321, thereby providing an installation allowance for the impeller 32 to be installed, so as to facilitate the installation of the impeller 32.
[0054] In this embodiment, the impeller 32 further includes a disk 323, which is fixedly connected to and coaxially arranged with the rotating shaft 321. At least two blades 322 are fixed to the periphery of the disk 323 and evenly spaced. For example, the rotating shaft 321, the disk 323, and the blades 322 are integrally formed to facilitate the processing and forming of the impeller 32 and reduce processing costs.
[0055] To improve the structural strength of the disc 323, the disc 323 has an annular reinforcing rib 3231 protruding into the inner wall of the inner liner 1 at a position near the rotating shaft 321, so as to avoid the impeller 32 from being affected by deformation of the disc 323.
[0056] Figure 6 This is a schematic diagram of the structure of the motor 31 and mounting bracket 6 provided in the embodiments of this application. Figure 7 This is an exploded view of the motor 31, mounting bracket 6, and inner liner 1 provided in an embodiment of this application. Figures 6 to 7As shown in Figure 3, the cleaning machine also includes a mounting bracket 6 for mounting the motor 31. The mounting bracket 6 has several first fixing holes 61, and the inner tank 1 has second fixing holes 11 corresponding to the first fixing holes 61. Fasteners are used to fix the mounting bracket 6 to the inner tank 1 through the first fixing holes 61 and the second fixing holes 11. For example, bolts can be used as fasteners. The first fixing holes 61 are threaded holes, and the bolts pass through the second fixing holes 11 and are threaded into these holes, thereby fixing the mounting bracket 6 to the inner tank 1.
[0057] To facilitate the positioning and assembly of the mounting bracket 6 and the inner liner 1, one of the mounting bracket 6 and the inner liner 1 has a limiting protrusion 62, and the other has a limiting recess 12 that mates with the limiting protrusion 62. In this embodiment, the mounting bracket 6 is provided with the limiting protrusion 62, and the inner liner 1 is provided with the limiting recess 12 that mates with the limiting protrusion 62. When assembling the mounting bracket 6, as long as the limiting protrusion 62 mates with the limiting recess 12, the first fixing hole 61 and the second fixing hole 11 can be connected accordingly, thereby facilitating the fixing of the mounting bracket 6 to the inner liner 1 using fasteners.
[0058] Furthermore, the inner liner 1 has a recess 13 on the surface facing the mounting bracket 6 that is recessed inward, and the mounting bracket 6 has a protrusion 64 that mates with the recess 13. Through the mate between the recess 13 and the protrusion 64, not only can the mounting bracket 6 be positioned and assembled, but it is also beneficial to the tight fit between the mounting bracket 6 and the inner liner 1, making the fit between the entire inner liner 1 and the mounting bracket 6 more compact and improving space utilization.
[0059] In addition, the mounting bracket 6 also has a number of weight reduction holes 63, which are arranged around the periphery of the mounting bracket 6. The weight reduction holes 63 can not only reduce the weight of the mounting bracket 6, but also reduce material costs.
[0060] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that the above embodiments do not limit this application in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this application.
Claims
1. A cleaning machine characterized by, The cleaning machine comprises: an inner container (1); a protective cover (2) fixed to the inner container (1) and surrounding the inner wall of the inner container (1) to form a mounting space, the protective cover (2) having an air inlet (21) and an air outlet (22) communicating with the mounting space; a fan (3) comprising a motor (31) and an impeller (32), the motor (31) being fixed to the inner container (1), and the drive shaft (310) of the motor (31) being located outside the inner container (1), the impeller (32) comprising a rotating shaft (321) and blades (322) fixedly connected to the rotating shaft (321), the rotating shaft (321) being rotatably installed in the mounting space and being drivingly connected to the drive shaft (310) of the motor (31) by magnetic attraction.
2. The cleaning machine of claim 1, wherein, The fan (3) further comprises a first magnetic attraction member and a second magnetic attraction member capable of being magnetically connected to the first magnetic attraction member, the first magnetic attraction member being installed at one end of the drive shaft (310) of the motor (31) facing the rotating shaft (321), and the second magnetic attraction member being installed at one end of the rotating shaft (321) facing the drive shaft (310) of the motor (31).
3. The cleaning machine of claim 1, wherein, The cleaning machine further comprises a first limiting ring (4) and a second limiting ring (5), the first limiting ring (4) being installed on the inner wall of the inner container (1), the second limiting ring (5) being installed on the inner wall of the protective cover (2) and being coaxially arranged with the first limiting ring (4), one end of the rotating shaft (321) being rotatably connected to the first limiting ring (4), and the other end of the rotating shaft (321) being rotatably connected to the second limiting ring (5).
4. The cleaning machine of claim 3, wherein, The maximum distance between the first limiting ring (4) and the second limiting ring (5) is greater than the length of the rotating shaft (321).
5. The cleaning machine of claim 1, wherein, The impeller (32) further comprises a disc (323) fixedly connected to the rotating shaft (321) and coaxially arranged with the rotating shaft (321), and at least two blades (322) are fixedly arranged on the circumferential side of the disc (323) and are uniformly spaced.
6. The cleaning machine of claim 5, wherein, The disc (323) is provided with an annular reinforcing rib (3231) protruding towards the inner wall of the inner container (1) at a position adjacent to the rotating shaft (321).
7. The cleaning machine of claim 1, wherein, The cleaning machine further comprises a mounting bracket (6) for mounting the motor (31), the mounting bracket (6) having a plurality of first fixing holes (61), the inner container (1) having a plurality of second fixing holes (11) corresponding to the first fixing holes (61), and the mounting bracket (6) being fixed to the inner container (1) by fasteners passing through the first fixing holes (61) and the second fixing holes (11).
8. The cleaning machine of claim 7, wherein, One of the mounting bracket (6) and the inner container (1) has a limiting protrusion (62), and the other has a limiting recess (12) matched with the limiting protrusion (62).
9. The cleaning machine of claim 7, wherein, The mounting bracket (6) further has a plurality of weight-reducing holes (63).
10. The cleaning machine of any one of claims 1-9, wherein, The cleaning machine further comprises a heater (7) installed on the inner wall of the inner container (1) and located in the installation space, and the heater (7) is annularly arranged on the side of the impeller (32).