A cleaning machine

Abstract

The present invention relates to a cleaning machine, comprising a water tank body with a washing chamber, the water tank body is made of plastic, and also comprises a metal part, the metal part is arranged on the inner wall surface of the upper part of the water tank body, and a plurality of spaced protrusions are arranged on the inner wall surface of the water tank body at least at the lower part. The present invention makes the water tank body of plastic, which has strong plasticity, and is convenient for deepening the depth of the tank body as needed, and also greatly reduces the production cost; when the hot water cleaning is completed, a large amount of steam will be retained at the top of the washing chamber, and the metal part can accelerate the condensation of the steam, and the metal part also improves the strength of the upper part of the plastic tank body, preventing the water tank body from being deformed by heat, and can also resonate with the ultrasonic sounding device in the water tank cleaning machine to improve the ultrasonic cleaning effect; the protrusion at the bottom of the water tank body can prevent the water tank body from being deformed by heat or cold, and at the same time, it can also resonate with the ultrasonic sounding device at the bottom of the water tank cleaning machine to improve the ultrasonic cleaning effect.

Description

Technical Field

[0001] The invention relates to a kitchen appliance, in particular to a washing machine for washing dishes, vegetables or fruits. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Dishwashers on the market are generally divided into three types: tabletop, cabinet, and tank. Among them, tabletop dishwashers are integrated independent structures and are generally placed on the table for use; cabinet dishwashers are also independent structures, but need to be embedded in kitchen cabinets for use; tank dishwashers are combined with sinks and are generally installed in kitchen cabinets for use.

[0003] At present, the structure of the relatively mature water tank type cleaning machine on the market is mainly as described in the Chinese patent "Water Tank Type Cleaning Machine" (application number: CN201310750968.1) with the authorization announcement number CN104224074B, that is, it includes a box body forming a washing space, the box body includes a water tank body and a cover plate rotatably connected to the water tank body, the bottom of the water tank body has a concave drain area at least in the central part, and the drain area is provided with a water pump that pumps the water in the drain area out to the washing space above the drain area, the drain area is covered with a drain plate with drain holes, and a rotating spray arm connected to the water pump fluid and having a water outlet hole is arranged above the drain plate. By setting a drain area covered with a drain plate and setting the water pump in the drain area, the water pump is isolated from the washing area, so that the water flowing back into the water pump is first filtered by the drain plate.

[0004] The sink body of the above-mentioned existing sink-type cleaning machine is made of stainless steel material, and the processing methods are mainly welding and drawing. Among them, for the welding process, due to the large welding deformation of stainless steel materials, it is difficult to control the dimensional accuracy of the sink, which limits the overall shape of the sink body, resulting in a single structure of the sink body, which in turn restricts the development of more functional structures of the sink-type cleaning machine. In addition, the welding process has extremely high requirements for the welding mold, low welding efficiency and high cost; for the drawing process, the deformation limit of the stainless steel material directly limits the drawing depth of the sink. The sink drawn by the drawing process generally has a depth less than the opening width of the sink. At present, it is difficult for the processes around the world to achieve a drawing depth greater than the opening width of the sink body, which causes the sink to occupy a larger installation space in the kitchen during installation and greatly limits the washing space of the sink. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a cleaning machine which adopts a tank body combining plastic and metal so as to deepen the tank body and reduce the production cost in view of the current status of the prior art.

[0006] Another technical problem to be solved by the present invention is to provide a cleaning machine capable of preventing the deformation of the plastic tank body and improving the condensation effect after cleaning, in view of the current status of the prior art.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a cleaning machine, including a sink body with a washing chamber, characterized in that: the sink body is made of plastic and also includes a metal part, the metal part is arranged on the inner wall surface of the upper part of the sink body, and the inner wall surface of the sink body is provided with a plurality of spaced protrusions at least in the lower part.

[0008] Preferably, the protrusions are arranged in an array on the inner peripheral wall of the water tank body.

[0009] Preferably, a guide strip extending up and down is convexly provided on the inner wall surface of the metal part. This structure can guide the condensed water downward, which is conducive to accelerating the condensation of water.

[0010] In order to facilitate installation, a circumferentially arranged receiving groove is provided on the inner wall surface of the upper part of the water tank body, and the metal piece is arranged in the receiving groove. This structure facilitates the positioning and installation of the metal piece.

[0011] Preferably, the metal piece is formed as an annular plate extending up and down in the receiving groove, the upper edge of the annular plate contacts the upper edge of the receiving groove, and the lower edge of the annular plate contacts the lower edge of the receiving groove.

[0012] Further preferably, the upper edge of the annular plate is bent into the accommodating groove to form a first U-shaped structure with an opening facing downward, and the outer side of the first U-shaped structure contacts the inner wall of the accommodating groove, and the lower edge of the annular plate is bent into the accommodating groove to form a second U-shaped structure with an opening facing upward, and the outer side of the second U-shaped structure contacts the inner wall of the accommodating groove, and the annular plate and the first and second U-shaped structures on the annular plate together form a first cavity with the inner wall of the accommodating groove. Since the hot water is mainly sprayed onto the inner wall of the middle and upper part of the water tank body after being sprayed out by the spray arm, and the hot steam rises to the top of the water tank body, the above-mentioned first cavity can improve the thermal insulation performance of the lower part of the water tank body and save energy consumption on the one hand, and on the other hand, it can also play a sound insulation effect to a certain extent.

[0013] Preferably, the outer wall of the annular plate is inwardly concave to form a concave area corresponding to the guide strip. The convex inner and concave outer structure of the guide strip greatly enhances the elasticity of the annular plate. When the ultrasonic cleaning device of the cleaning machine is activated, it forms a strong resonance with the ultrasonic wave to improve the cleaning effect.

[0014] Preferably, a first reinforcing rib is provided on the outer peripheral wall of the water tank body in the area corresponding to the receiving groove. This structure is provided to improve the rigidity of the upper part of the water tank body to avoid deformation of the top of the water tank body caused by high temperature.

[0015] Preferably, the open portion of the water tank body is made of metal at least at the position in contact with the installation plane, and the water tank body portion below is made of plastic. Since the top edge of the water tank body is generally used as the load-bearing position during installation of the current water tank body, the above structure is used to improve the stability of the installation of the water tank body.

[0016] In order to facilitate installation and improve stability after installation, a metal assembly frame for installation and load-bearing is provided on the open periphery of the water tank body.

[0017] Preferably, the open edge extends outward to form a shelf that can be placed on the installation plane, and the metal assembly frame is arranged around the open periphery of the sink body, and its cross section has at least a Z-shaped portion, wherein the lower side of the Z-shape is arranged under the shelf, the vertical side of the Z-shape is arranged outside the periphery of the shelf, and the upper side of the Z-shape gradually extends outward away from the shelf. The upper side of the Z-shaped portion of the metal assembly frame has an outer vertical side that is bent downward at the extended end, and the lowermost end of the outer vertical side is flush with the lower side of the Z-shaped portion. This further improves the stability after installation.

[0018] Preferably, the inner wall of the metal component is flush with the inner wall surface of the water tank body.

[0019] In the above schemes, an ultrasonic generator is arranged at the bottom of the water tank body. This structure can effectively improve the cleaning effect, and the metal parts arranged on the upper part of the plastic tank body can resonate with the ultrasonic generator, further improving the ultrasonic cleaning effect.

[0020] In the above solution, the lower part of the water tank body is formed with a first concave area arranged along the circumferential direction, and the protrusion is arranged in the first concave area. With this structure, when the ultrasonic cleaning device is activated at the bottom of the cleaning machine, the matching structure of the first concave area and the protrusion can resonate well with the ultrasonic wave upward, thereby improving the ultrasonic cleaning effect.

[0021] Preferably, the outer wall surface of the water tank body is inwardly recessed to form a second recessed area corresponding to the protruding portion. This structure can improve the resonance effect with the ultrasonic wave together with the protruding portion and the first recessed area, and further improve the ultrasonic cleaning effect.

[0022] As an improvement, the outer wall surface of the lower part of the water tank body is provided with a second reinforcing rib arranged in the circumferential direction, and the second reinforcing rib is arranged through the second recessed area. Since the cleaning machine often needs to use hot water and cold water alternately during the cleaning process, and the deformation degree caused by cold water and hot water on the plastic tank body is different, and when using hot water for cleaning, the hot steam rises to the upper part of the water tank body, and when using cold water for cleaning, the cold water is generally located at the bottom of the water tank body, therefore, the deformation caused by cold shrinkage at the bottom of the water tank body is the largest, and the above-mentioned second reinforcing rib structure can support the lower part of the plastic water tank body and prevent the lower part of the water tank body from internal deformation due to cold shrinkage; at the same time, the water tank cleaning machine is often provided with an ultrasonic sounding device, and the above-mentioned second reinforcing rib structure can resonate with the ultrasonic sounding device to enhance the ultrasonic cleaning effect.

[0023] As a further improvement, a metal strip is embedded in the second reinforcing rib, and at least part of the metal strip is exposed in the washing cavity of the water tank body. Compared with plastic materials, metal materials can produce stronger resonance with ultrasound. The present invention exposes the metal strip in the washing cavity, which can produce stronger resonance with ultrasound and improve the ultrasonic cleaning effect.

[0024] Preferably, a metal plate extending up and down is provided in the first recessed area, and the protrusion is provided on the metal plate. As described above, metal materials and ultrasonic waves can produce stronger resonance. The metal plate provided in the present invention can produce stronger resonance with ultrasonic waves. At the same time, the protrusion on the metal plate can further strengthen the resonance with ultrasonic waves, thereby improving the ultrasonic cleaning effect.

[0025] Further preferably, the upper edge of the metal plate is bent into the first recessed area to form a fourth U-shaped structure with an opening facing downward, and the outer side of the fourth U-shaped structure contacts the inner wall of the first recessed area. The lower edge of the metal plate is bent into the first recessed area to form a fifth U-shaped structure with an opening facing upward, and the outer side of the fifth U-shaped structure contacts the inner wall of the first recessed area. The metal plate and the fourth and fifth U-shaped structures on the metal plate together form a third cavity with the inner wall of the first recessed area. Since hot water will fall back to the lower part of the sink body after being sprayed out by the spray arm and stay in the lower part of the sink body for a certain period of time, the third cavity can improve the thermal insulation performance of the lower part of the sink body and save energy consumption on the one hand, and can also achieve a sound insulation effect to a certain extent on the other hand.

[0026] Preferably, the protrusion is formed into a cross shape and is integrally formed with the metal plate, and the position on the outer wall of the metal plate corresponding to the protrusion is recessed toward the washing chamber to form a third recessed area. With the above structure, the protrusion can strengthen the strength of the lower part of the sink body. At the same time, the protrusion with an inner convex and outer concave structure greatly enhances the elasticity of the metal plate and forms a stronger resonance with the ultrasonic wave, further improving the cleaning effect.

[0027] Preferably, the outer peripheral wall of the lower part of the water tank body corresponding to the first recessed area is arranged to protrude outward so that the thickness of the lower part of the water tank body is consistent with the thickness of the upper part of the water tank body. This structure can ensure that the water tank body has good firmness and stability.

[0028] Compared with the prior art, the advantages of the present invention are: the present invention uses plastic to make the water tank body, which has strong plasticity and is convenient for deepening the tank body as needed, while also greatly reducing the production cost; the present invention arranges metal parts on the inner wall surface of the upper part of the water tank body. When hot water cleaning is completed, a large amount of steam will be retained on the top of the washing chamber. The above-mentioned metal parts can accelerate the condensation of steam. At the same time, the metal parts improve the strength of the upper part of the plastic tank body to prevent the water tank body from being deformed by heat. In addition, it can also resonate with the ultrasonic sound-generating device in the water tank cleaning machine to improve the ultrasonic cleaning effect; the present invention arranges a protrusion on the inner wall surface of the lower part of the water tank body. On the one hand, the protrusion can prevent the water tank body from being deformed by heat or cold. At the same time, it can also resonate with the ultrasonic sound-generating device at the bottom of the water tank cleaning machine to improve the ultrasonic cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention (excluding the first reinforcing rib);

[0030] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0031] Figure 3 for Figure 1 A cross-sectional view of the upper part;

[0032] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0033] Figure 5 for Figure 1 a cross-sectional view of the lower part;

[0034] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part B;

[0035] Figure 7 It is a cross-sectional view of the lower part of the water tank body in Example 2 of the present invention;

[0036] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part C. DETAILED DESCRIPTION

[0037] The present invention is further described in detail below with reference to the accompanying drawings.

[0038] Embodiment 1:

[0039] like Figures 1 to 6 As shown, the washing machine of this embodiment is a water tank type washing machine, comprising a water tank body 1 having a washing cavity 10, the water tank body 1 needs to be installed on a cabinet countertop 100 for use, and the cabinet countertop 100 is provided with an installation opening 101 for installing the water tank body 1. The top of the water tank body 1 has an opening 11 connected to the washing cavity 10.

[0040] The bottom of the water tank body 1 of this embodiment is provided with a water pump 6 which can lift water from the bottom of the water tank body 1 and spray it upward through the spray arm 5. The bottom of the water tank body 1 is provided with an ultrasonic generator 4, which can effectively improve the cleaning effect.

[0041] The open portion 11 of the sink body 1 of this embodiment is made of metal at least at the position in contact with the cabinet countertop 100, and the sink body 1 portion below it is made of plastic. Considering that the plastic sink body 1 has a low load-bearing capacity, a metal assembly frame 2 for installation and load-bearing is provided at the periphery of the open portion 11 of the sink body 1. The edge of the open portion 11 extends outward to form a shelf 12 that can be placed on the cabinet countertop 100. The metal assembly frame 2 is arranged around the periphery of the open portion 11 of the sink body 1, and its cross section has at least a Z-shaped part, wherein the lower side 21 of the Z-shape is arranged under the shelf 12, the vertical side 20 of the Z-shape is arranged outside the periphery of the shelf 12, and the upper side 22 of the Z-shape gradually extends outward away from the shelf 12. The upper side 22 of the Z-shaped part of the metal assembly frame 2 has an outer vertical side 23 bent downward at the extended end, and the lower end of the outer vertical side 23 is flush with the lower side 21 of the Z-shaped part. This structure can effectively improve the safety and stability of installation.

[0042] In this embodiment, a metal part 3 arranged along the circumference of the water tank body 1 is provided on the inner wall surface of the upper part of the water tank body 1. In order to facilitate installation, a circumferentially arranged receiving groove 13 is provided on the inner wall surface of the upper part of the water tank body 1, and the metal part 3 is arranged in the receiving groove 13. After assembly, the inner wall of the metal part 3 is flush with the inner wall surface of the water tank body 1, and this structure facilitates the positioning and installation of the metal part 3. A first reinforcing rib 7' is provided on the outer peripheral wall of the water tank body 1 in the area corresponding to the receiving groove 13. The first reinforcing rib 7' has first reinforcing strips 71' arranged at intervals and extending up and down, and second reinforcing strips 72' connected to the lower end of each first reinforcing strip 71' along the circumferential direction. The provision of this structure can improve the rigidity of the upper part of the water tank body 1, and work together with the metal part 3 to prevent the top of the water tank body 1 from being deformed due to high temperature.

[0043] Specifically, the metal member 3 is formed into an annular plate extending up and down in the receiving groove 13, the upper edge of the annular plate contacts the upper edge of the receiving groove 13, and the lower edge of the annular plate contacts the lower edge of the receiving groove 13. The upper edge of the annular plate is bent into the receiving groove 13 to form a first U-shaped structure 31 with an opening facing downward, the outer side of the first U-shaped structure 31 contacts the inner wall of the receiving groove 13, and the lower edge of the annular plate is bent into the receiving groove 13 to form a second U-shaped structure 32 with an opening facing upward, the outer side of the second U-shaped structure 32 contacts the inner wall of the receiving groove 13, and the annular plate and the first U-shaped structure 31 and the second U-shaped structure 32 on the annular plate together form a first cavity 30 with the inner wall of the receiving groove 13. A plurality of guide strips 33 extending up and down are convexly provided on the inner wall surface of the metal member 3. A concave area 34 is formed on the outer wall surface of the metal member 3 corresponding to the guide strips 33. The convex and concave structure of the guide strip 33 greatly enhances the elasticity of the annular plate. When the ultrasonic cleaning device 4 is activated in the cleaning machine, it forms a strong resonance with the ultrasonic wave, thereby improving the cleaning effect. Since the hot water is mainly sprayed onto the inner wall of the upper middle part of the water tank body 1 after being sprayed through the spray arm 5, and the hot steam rises to the top of the water tank body 1, the first cavity 30 can improve the thermal insulation performance of the lower part of the water tank body 1 and save energy consumption, and can also play a sound insulation effect to a certain extent.

[0044] In this embodiment, a plurality of spaced protrusions 3' are provided at the lower part of the inner wall surface of the water tank body 1. A first recessed area 13' arranged in the circumferential direction is formed at the lower part of the water tank body 1, and the protrusion 3' is provided in the first recessed area 13' and is formed integrally with the water tank body 1. With this structure, when the ultrasonic cleaning device 4 is activated at the bottom of the cleaning machine, the matching structure of the first recessed area 13' and the protrusion 3' can resonate better with the ultrasonic wave upward, thereby improving the ultrasonic cleaning effect. A second recessed area 31' is formed inwardly at the corresponding protrusion 3' on the outer wall surface of the water tank body 1. This structure can improve the resonance effect with the ultrasonic wave together with the protrusion 3' and the first recessed area 13', thereby further improving the ultrasonic cleaning effect.

[0045] The lower outer wall surface of the water tank body 1 of this embodiment is also provided with a second reinforcing rib 7 arranged in the circumferential direction, and the second reinforcing rib 7 is arranged through the second recessed area 31'. Since the cleaning machine often needs to alternately clean with hot water and cold water during the cleaning process, and the deformation degree caused by cold water and hot water on the plastic tank body is different, and when hot water is used for cleaning, the hot steam rises to the upper part of the water tank body, and when cold water is used for cleaning, the cold water is generally located at the bottom of the water tank body 1, therefore, the deformation of the cold shrinkage at the bottom of the water tank body 1 is the largest, and the second reinforcing rib 7 structure can support the lower part of the plastic water tank body 1 to prevent the lower part of the water tank body 1 from internal deformation due to cold shrinkage; at the same time, the water tank cleaning machine is often provided with an ultrasonic sounding device 4, and the second reinforcing rib 7 structure can resonate with the ultrasonic sounding device 4 to enhance the ultrasonic cleaning effect. A metal strip 8 is embedded in the second reinforcing rib 7, and at least part of the metal strip 8 is exposed in the washing chamber 10 of the water tank body 1. Compared with plastic materials, metal materials can produce stronger resonance with ultrasonic waves. In this embodiment, the metal strip 8 is exposed in the washing chamber 10, which can produce stronger resonance with ultrasonic waves and improve the ultrasonic cleaning effect.

[0046] In this embodiment, the sink body 1 is made of plastic, which has strong plasticity and is convenient for deepening the depth of the sink body as needed, which improves the conditions for further developing new functions and structures of the sink type cleaning machine. Of course, the plastic sink body also greatly reduces the production cost compared with the stainless steel sink body; in this embodiment, the sink body 1 is installed on the cabinet countertop by using a metal assembly frame 2, which solves the problem of small bearing capacity of the shelf 12 of the plastic sink body 1 and improves the stability of the installation of the sink body 1; in addition, in this embodiment, a metal part 3 is arranged on the inner wall surface of the upper part of the sink body 1, and the metal part 3 can prevent the sink body 1 from being deformed by heat on the one hand, and at the same time, it can resonate with the ultrasonic sound-generating device 4 in the sink cleaning machine to improve the ultrasonic cleaning effect; in this embodiment, a protrusion 3' is arranged on the inner wall surface of the lower part of the sink body 1, and the protrusion 3' can prevent the sink body 1 from being deformed by heat or cold on the one hand, and at the same time, it can resonate with the ultrasonic sound-generating device 4 at the bottom of the sink cleaning machine to improve the ultrasonic cleaning effect.

[0047] Embodiment 2:

[0048] The difference between this embodiment and embodiment 1 is that the protrusion is not directly formed as one piece with the water tank body, but is provided on the water tank body through a separate component.

[0049] Specifically, Figure 7 , 8As shown, a metal plate 9 extending up and down is provided in the first recessed area 13', and a protrusion 3" is provided on the metal plate 9, and an upper edge of the metal plate contacts an upper edge of the first recessed area 13', and a lower edge of the metal plate contacts a lower edge of the first recessed area 13'. The upper edge of the metal plate is bent toward the first recessed area 13' to form a fourth U-shaped structure 91 with an opening facing downward, and the outer side of the fourth U-shaped structure 91 contacts the inner wall of the first recessed area 13', and the lower edge of the metal plate contacts the first recessed area 13'. ' is bent to form a fifth U-shaped structure 92 with an opening facing upward, the outer side of the fifth U-shaped structure 92 contacts the inner wall of the first recessed area 13', and the metal plate and the fourth U-shaped structure 91 and the fifth U-shaped structure 92 on the metal plate together with the inner wall of the first recessed area 13' form a third cavity 90. The protrusion 3" is formed in a cross shape and is formed integrally with the metal plate, and the position on the outer wall of the metal plate corresponding to the protrusion 3" is recessed toward the washing chamber 10 to form a third recessed area 30'.

[0050] The protrusion 3" can strengthen the strength of the lower part of the sink body 1. At the same time, the protrusion 3" with an inner convex and outer concave structure can greatly enhance the elasticity of the metal plate and form a stronger resonance with the ultrasonic wave, further improving the cleaning effect. In addition, since the hot water will fall back to the lower part of the sink body 1 after being sprayed through the spray arm 5 and stay in the lower part of the sink body 1 for a certain period of time, the third cavity 90 can, on the one hand, improve the thermal insulation performance of the lower part of the sink body 1 and save energy consumption, and on the other hand, it can also have a sound insulation effect to a certain extent.

Claims

1. A cleaning machine, comprising a water tank body (1) having a washing chamber (10), characterized in that: The water tank body (1) is made of plastic material and further comprises a metal part (3), wherein the metal part (3) is arranged on the inner wall surface of the upper part of the water tank body (1), and a plurality of protrusions (3') arranged at intervals are arranged at least at the lower part of the inner wall surface of the water tank body (1); A guide strip (33) extending up and down is convexly provided on the inner wall surface of the metal part (3); A circumferentially arranged receiving groove (13) is provided on the inner wall surface of the upper part of the water tank body (1), and the metal member (3) is arranged in the receiving groove (13); a first reinforcing rib (7') is provided on the outer peripheral wall of the water tank body (1) in an area corresponding to the receiving groove (13); The metal member (3) is formed as an annular plate extending up and down in the receiving groove (13), the upper edge of the annular plate contacts the upper edge of the receiving groove (13), and the lower edge of the annular plate contacts the lower edge of the receiving groove (13); The upper edge of the annular plate is bent into the accommodating groove (13) to form a first U-shaped structure (31) with an opening facing downward, and the outer side of the first U-shaped structure (31) is in contact with the inner wall of the accommodating groove (13). The lower edge of the annular plate is bent into the accommodating groove (13) to form a second U-shaped structure (32) with an opening facing upward, and the outer side of the second U-shaped structure (32) is in contact with the inner wall of the accommodating groove (13). The annular plate and the first U-shaped structure (31), the second U-shaped structure (32) on the annular plate together form a first cavity (30) with the inner wall of the accommodating groove (13).

2. The cleaning machine according to claim 1, characterized in that: The outer wall surface of the annular plate is inwardly recessed at a location corresponding to the guide strip (33) to form a recessed area (34).

3. The cleaning machine according to claim 1, characterized in that: A first recessed area (13') arranged along the circumferential direction is formed at the lower part of the water tank body (1), and the protruding parts (3') are arranged in an array in the first recessed area (13').

4. The cleaning machine according to claim 3, characterized in that: The outer wall surface of the water tank body (1) is recessed inwardly at a position corresponding to the protruding portion (3') to form a second recessed area (31').

5. The cleaning machine according to claim 4, characterized in that: The outer wall surface of the lower part of the water tank body (1) is provided with second reinforcing ribs (7) arranged along the circumferential direction, and the second reinforcing ribs (7) are arranged through the second recessed area (31').

6. The cleaning machine according to claim 5, characterized in that: A metal strip (8) is embedded in the second reinforcing rib (7), and at least part of the metal strip (8) is exposed in the washing chamber (10) of the sink body (1).

7. The cleaning machine according to claim 3, characterized in that: A metal plate (9) extending up and down is arranged in the first recessed area (13'), and the protruding portion (3") is arranged on the metal plate (9).

8. The cleaning machine according to claim 7, characterized in that: The upper edge of the metal plate (9) is bent into the first recessed area (13') to form a fourth U-shaped structure (91) with an opening facing downward, and the outer side of the fourth U-shaped structure (91) is in contact with the inner wall of the first recessed area (13'); the lower edge of the metal plate is bent into the first recessed area (13') to form a fifth U-shaped structure (92) with an opening facing upward, and the outer side of the fifth U-shaped structure (92) is in contact with the inner wall of the first recessed area (13'); the metal plate and the fourth U-shaped structure (91) and the fifth U-shaped structure (92) on the metal plate together form a third cavity (90) with the inner wall of the first recessed area (13').

9. The cleaning machine according to claim 7, characterized in that: The protrusion (3") is formed into a cross shape and is formed integrally with the metal plate (9). The position on the outer wall of the metal plate (9) corresponding to the protrusion (3") is recessed toward the washing chamber (10) to form a third recessed area (30').

10. The cleaning machine according to any one of claims 3 to 9, characterized in that: The outer peripheral wall at the lower part of the water tank body (1) corresponding to the first recessed area (13') is arranged to protrude outwards so that the thickness of the lower part of the water tank body (1) is consistent with the thickness of the upper part of the water tank body (1).

11. The cleaning machine according to any one of claims 1 to 9, characterized in that: The top of the water tank body (1) has an opening (11) connected to the washing chamber (10); the opening (11) of the water tank body (1) is made of metal at least at a position in contact with the installation plane, and the water tank body (1) portion below the opening is made of plastic.

12. The cleaning machine according to claim 11, characterized in that: A metal assembly frame (2) for installation and load bearing is arranged around the opening (11) of the water tank body (1).

13. The cleaning machine according to claim 12, characterized in that: The edge of the opening (11) extends outward to form a shelf (12) that can be placed on a mounting plane. The metal assembly frame (2) is arranged around the periphery of the opening (11) of the sink body (1), and its cross section has at least a partial Z-shape, wherein the lower side (21) of the Z-shape is arranged below the shelf (12), the vertical side (20) of the Z-shape is arranged outside the periphery of the shelf (12), and the upper side (22) of the Z-shape gradually extends outward away from the shelf (12).

14. The cleaning machine according to claim 13, characterized in that: The upper edge (22) of the Z-shaped portion of the metal assembly frame (2) has a downwardly bent outer vertical edge (23) at the extended end, and the lowermost end of the outer vertical edge (23) is flush with the lower edge (21) of the Z-shaped portion.

15. The cleaning machine according to any one of claims 1 to 9, characterized in that: An ultrasonic generating device (4) is provided at the bottom of the water tank body (1).

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