A cleaning machine

Abstract

The present invention relates to a cleaning machine, including a water tank body with a washing cavity, the water tank body is made of plastic, and also includes a first metal reinforcement and a second metal reinforcement. The present invention uses plastic to make the water tank body, which has strong plasticity and is convenient for deepening the depth of the tank body as needed, greatly reducing the production cost; the present invention sets a first metal reinforcement on the inner wall surface of the upper part of the water tank body. When the hot water cleaning is completed, a large amount of steam will be retained at the top of the washing cavity. The above-mentioned first metal reinforcement can accelerate the condensation of steam. The first metal reinforcement increases the strength of the upper part of the plastic tank body to prevent the upper part of 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 second metal reinforcement at the lower part of the water tank body can prevent the lower part of the water tank body from being deformed by heat or cold on the one hand, and on the other hand, can 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 which can prevent the deformation of the plastic tank body, accelerate the condensation speed of steam and improve the cleaning effect in view of the current status of the prior art.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a cleaning machine, including a sink body with a washing chamber, characterized in that: the sink body is made of plastic material, and also includes a first metal reinforcement and a second metal reinforcement, the first metal reinforcement is arranged on the inner wall surface of the upper part of the sink body, and the second metal reinforcement is arranged on the inner wall surface of the lower part of the sink body.

[0008] Preferably, a guide strip extending up and down is convexly provided on the inner wall surface of the first metal reinforcement member, which can guide the condensed water downward, which is conducive to accelerating the condensation of water.

[0009] In order to facilitate installation, a first accommodating groove arranged along the circumferential direction is opened on the inner wall surface of the upper part of the water tank body, and the first metal reinforcement is arranged in the first accommodating groove. This structure facilitates the positioning and installation of the first metal reinforcement.

[0010] Preferably, the first metal reinforcement is formed as an annular plate extending up and down in the first accommodating groove, the upper edge of the annular plate contacts the upper edge of the first accommodating groove, and the lower edge of the annular plate contacts the lower edge of the first accommodating groove.

[0011] Further preferably, the upper edge of the annular plate is bent into the first 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 first accommodating groove, and the lower edge of the annular plate is bent into the first 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 first 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 first 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.

[0012] 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.

[0013] Preferably, a reinforcing rib is provided on the outer peripheral wall of the water tank body in the area corresponding to the first containing 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] Preferably, the inner wall of the first metal reinforcement is flush with the inner wall surface of the water tank body.

[0018] In the above schemes, an ultrasonic generator is provided at the bottom of the water tank body. This structure can effectively improve the cleaning effect, and the first metal reinforcement member provided on the upper part of the plastic tank body can resonate with the ultrasonic generator to further improve the ultrasonic cleaning effect.

[0019] In order to facilitate installation, a second accommodating groove arranged along the circumferential direction is opened on the inner wall surface of the lower part of the water tank body, and the second metal reinforcement is arranged in the second accommodating groove. This structure facilitates the positioning and installation of the second metal reinforcement.

[0020] Preferably, the second metal reinforcement comprises a first assembly ring, a second assembly ring and a connecting arm, wherein the first assembly ring is arranged near the upper edge of the second receiving groove, the second assembly ring is arranged near the lower edge of the second receiving groove, and the connecting arm is a plurality of arms that are spaced and vertically connected between the first assembly ring and the second assembly ring. Alternatively, the second metal reinforcement is formed as an annular plate extending up and down in the second receiving groove, the upper edge of the annular plate contacts the upper edge of the second receiving groove, and the lower edge of the annular plate contacts the lower edge of the second receiving groove. As the preferred structure of the second metal reinforcement, the above two structures can realize two basic functions: first, since the cleaning machine often needs to alternate hot water and cold water for cleaning during the cleaning process, and the deformation degree caused by cold water and hot water to the plastic tank body is different, and when hot water is used for cleaning, the hot steam rises to the upper part of the tank body, and when cold water is used for cleaning, the cold water is generally located at the bottom of the tank body. Therefore, the deformation caused by cold shrinkage at the bottom of the tank body is the largest. The above metal reinforcement structure can support the lower part of the plastic tank body and prevent the lower part of the tank body from internal deformation due to cold shrinkage; second, an ultrasonic sounding device is often provided in the tank-type cleaning machine, and the above metal reinforcement structure can resonate with the ultrasonic sounding device to enhance the ultrasonic cleaning effect.

[0021] Preferably, the second metal reinforcement is formed as an annular plate extending up and down in the second accommodating groove, the upper edge of the annular plate contacts the upper edge of the second accommodating groove, and the lower edge of the annular plate contacts the lower edge of the second accommodating groove.

[0022] Further preferably, the upper edge of the annular plate is bent into the second accommodating groove 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 second accommodating groove, and the lower edge of the annular plate is bent into the second accommodating groove 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 second accommodating groove, and the annular plate and the fourth and fifth U-shaped structures on the annular plate together form a third cavity with the inner wall of the second accommodating groove. Since hot water will fall back to the lower part of the water tank body after being sprayed out by the spray arm and stay in the lower part of the water tank body for a certain period of time, the above-mentioned third 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.

[0023] Preferably, a plurality of protrusions arranged at intervals are provided on the inner wall surface of the annular plate. The protrusions are formed in a cross shape and are formed integrally with the annular plate, and the positions corresponding to the protrusions on the outer wall surface of the annular plate are recessed toward the washing chamber. With the above structure, the protrusions can further strengthen the strength of the lower part of the water tank body. At the same time, the protrusions of the inner convex and outer concave structure greatly enhance the elasticity of the annular plate and form a stronger resonance with the ultrasonic wave, further improving the cleaning effect.

[0024] Preferably, the outer peripheral wall of the lower part of the water tank body corresponding to the accommodating groove 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.

[0025] Compared with the prior art, the advantages of the present invention are: the present invention uses plastic to manufacture the sink body, which has strong plasticity and is convenient for deepening the sink body as needed, while also greatly reducing the production cost; the present invention arranges a first metal reinforcement on the inner wall surface of the upper part of the sink body. When hot water cleaning is completed, a large amount of steam will remain on the top of the washing chamber. The above-mentioned first metal reinforcement can accelerate the condensation of steam. At the same time, the first metal reinforcement improves the strength of the upper part of the plastic sink body to prevent the upper part of the sink body from being deformed by heat. In addition, it can also resonate with the ultrasonic sound-generating device in the sink cleaning machine to improve the ultrasonic cleaning effect. The second metal reinforcement at the lower part of the sink body can, on the one hand, prevent the lower part of the sink body from being deformed by heat or cold, and on the other hand, it can resonate with the ultrasonic sound-generating device at the bottom of the sink cleaning machine to improve the ultrasonic cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0027] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0028] Figure 3 for Figure 1 A cross-sectional view of the upper part of the middle water tank body;

[0029] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0030] Figure 5 for Figure 1 A cross-sectional view of the lower part of the middle water tank body;

[0031] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part B;

[0032] Figure 7It is a cross-sectional view of the lower part of the water tank body in Example 2 of the present invention;

[0033] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle C part;

[0034] Fig. 9 It is a cross-sectional view of the lower part of the water tank body in Example 3 of the present invention;

[0035] Fig.10 for Fig. 9 Schematic diagram of the enlarged structure of part D. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below with reference to the accompanying drawings.

[0037] Embodiment 1:

[0038] 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.

[0039] 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.

[0040] 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.

[0041] In this embodiment, a first metal reinforcement 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 first circumferentially arranged first receiving groove 13' is provided on the inner wall surface of the upper part of the water tank body 1. The first metal reinforcement 3' is arranged in the first receiving groove 13'. After assembly, the inner wall of the first metal reinforcement 3' is flush with the inner wall surface of the water tank body 1. This structure facilitates the positioning and installation of the first metal reinforcement 3'. A reinforcing rib 7 is provided on the outer peripheral wall of the water tank body 1 in the area corresponding to the first receiving groove 13'. The 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 first metal reinforcement 3' to prevent deformation of the top of the water tank body 1 due to high temperature.

[0042] Specifically, the first metal reinforcement 3' is formed as an annular plate extending up and down in the first receiving groove 13', the upper edge of the annular plate contacts the upper edge of the first receiving groove 13', and the lower edge of the annular plate contacts the lower edge of the first receiving groove 13'. The upper edge of the annular plate is bent into the first receiving groove 13' to form a first U-shaped structure 31' with an opening arranged downward, the outer side of the first U-shaped structure 31' contacts the inner wall of the first receiving groove 13', and the lower edge of the annular plate is bent into the first receiving groove 13' to form a second U-shaped structure 32' with an opening arranged upward, the outer side of the second U-shaped structure 32' contacts the inner wall of the first 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 first receiving groove 13'. A plurality of guide strips 33' extending up and down and spaced apart are convexly provided on the inner wall surface of the first metal reinforcement 3'. The outer wall surface of the first metal reinforcement 3' is inwardly concave at the guide strip 33'. The convex inner and concave outer structure of the guide strip 33' greatly enhances the elasticity of the annular plate. When the ultrasonic cleaning device 4 of the cleaning machine is activated, it forms a strong resonance with the ultrasonic wave to improve 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 above-mentioned first cavity 30' can improve the thermal insulation performance of the lower part of the water tank body 1 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.

[0043] In this embodiment, a second metal reinforcement 3 arranged along the circumference of the water tank body 1 is provided on the inner wall surface of the lower part of the water tank body 1. In order to facilitate installation, a second accommodating groove 13 arranged along the circumference is opened on the inner wall surface of the lower part of the water tank body 1, and the second metal reinforcement 3 is arranged in the second accommodating groove 13. After assembly, the inner wall of the second metal reinforcement 3 is flush with the inner wall surface of the water tank body 1. This structure facilitates the positioning and installation of the second metal reinforcement 3. The outer peripheral wall of the lower part of the water tank body 1 corresponding to the second accommodating groove 13 is arranged to protrude outward 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. This structure can ensure that the water tank body 1 has good firmness and stability.

[0044] Specifically, the second metal reinforcement 3 of this embodiment includes a first assembly ring 31, a second assembly ring 32 and a connecting arm 33. The first assembly ring 31 is arranged near the upper edge of the accommodating groove 13, and the second assembly ring 32 is arranged near the lower edge of the accommodating groove 13. The connecting arm 33 is a plurality of and spaced apart vertically connected between the first assembly ring 31 and the second assembly ring 32. The metal reinforcement 3 can realize two basic functions: first, since the cleaning machine often needs to alternate hot water and cold water for cleaning 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 and is located at the upper part of the tank body 1, and when cold water is used for cleaning, the cold water is generally located at the bottom of the tank body 1. Therefore, the deformation of the cold shrinkage at the bottom of the tank body 1 is the largest. The above-mentioned metal reinforcement 3 structure can support the lower part of the plastic tank body 1 and prevent the lower part of the tank body 1 from internal deformation due to cold shrinkage; second, an ultrasonic sounding device 4 is provided in the tank-type cleaning machine, and the above-mentioned second metal reinforcement 3 structure can resonate with the ultrasonic sounding device 4 to enhance the ultrasonic cleaning effect.

[0045] 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 first metal reinforcement 3' is arranged on the inner wall surface of the upper part of the sink body 1. On the one hand, the first metal reinforcement 3' can prevent the sink body 1 from being deformed by heat, and at the same time, it can resonate with the ultrasonic sounding device 4 in the sink cleaning machine to improve the ultrasonic cleaning effect; in this embodiment, a second metal reinforcement 3 is arranged on the inner wall surface of the lower part of the sink body 1. On the one hand, the second metal reinforcement 3 can prevent the sink body 1 from being deformed by heat or cold, and at the same time, it can resonate with the ultrasonic sounding device 4 at the bottom of the sink cleaning machine to improve the ultrasonic cleaning effect.

[0046] Embodiment 2:

[0047] The difference between this embodiment and Embodiment 1 is that the structure of the second metal reinforcement is different.

[0048] like Figure 7 , 8 As shown, the second metal reinforcement 3" of the present embodiment is formed as an annular plate extending up and down in the second accommodating groove 13, the upper edge of the annular plate contacts the upper edge of the second accommodating groove 13, and the lower edge of the annular plate contacts the lower edge of the second accommodating groove 13. The upper edge of the annular plate is bent toward the second accommodating groove 13 to form a fourth U-shaped structure 31" with an opening facing downward, the outer side of the fourth U-shaped structure 31" contacts the inner wall of the accommodating groove 13, the lower edge of the annular plate is bent toward the second accommodating groove 13 to form a fifth U-shaped structure 32" with an opening facing upward, the outer side of the fifth U-shaped structure 32" contacts the inner wall of the second accommodating groove 13, and the annular plate and the fourth U-shaped structure 31" and the fifth U-shaped structure 32" on the annular plate together form a third cavity 30" with the inner wall of the second accommodating groove 13.

[0049] In addition to the function of the second metal reinforcement 3 in Example 1, the second metal reinforcement 3" in this embodiment also has the following function. 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 above-mentioned third cavity 30" 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.

[0050] Embodiment 3:

[0051] like Fig. 9 , 10 As shown, the difference between this embodiment and embodiment 2 is that: a plurality of spaced protrusions 33'' are provided on the inner wall surface of the annular plate of this embodiment, the protrusion 33'' is formed into a cross shape and is formed integrally with the annular plate, and the position corresponding to the protrusion 33'' on the outer wall surface of the annular plate is recessed toward the washing chamber 10. With the above structure, the protrusion 33'' can further enhance the strength of the lower part of the water tank body 1. At the same time, the protrusion 33'' with the inner convex and outer concave structure can greatly enhance the elasticity of the annular plate and form a stronger resonance with the ultrasonic wave, thereby further improving the cleaning effect.

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 first metal reinforcement member (3') and a second metal reinforcement member (3), wherein the first metal reinforcement member (3') is arranged on the inner wall surface of the upper part of the water tank body (1), and the second metal reinforcement member (3) is arranged on the inner wall surface of the lower part of the water tank body (1); A guide strip (33') extending up and down is convexly provided on the inner wall surface of the first metal reinforcement (3'); A first containing groove (13') arranged along the circumferential direction is provided on the inner wall surface of the upper part of the water tank body (1), and the first metal reinforcement member (3') is arranged in the first containing groove (13'); The first metal reinforcement (3') is formed as an annular plate extending up and down in the first accommodating groove (13'), the upper edge of the annular plate contacts the upper edge of the first accommodating groove (13'), and the lower edge of the annular plate contacts the lower edge of the first accommodating groove (13'); The upper edge of the annular plate is bent into the first 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') contacts the inner wall of the first accommodating groove (13'); the lower edge of the annular plate is bent into the first 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') contacts the inner wall of the first 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 first accommodating groove (13'); A second containing groove (13) arranged along the circumferential direction is provided on the inner wall surface of the lower part of the water tank body (1), and the second metal reinforcement member (3) is arranged in the second containing 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 reinforcing rib (7) is provided on the outer peripheral wall of the water tank body (1) in an area corresponding to the first containing groove (13').

4. The cleaning machine according to claim 1, characterized in that: The second metal reinforcement (3) comprises a first assembly ring (31), a second assembly ring (32) and a connecting arm (33); the first assembly ring (31) is arranged close to the upper edge of the second accommodating groove (13); the second assembly ring (32) is arranged close to the lower edge of the second accommodating groove (13); and the connecting arm (33) is a plurality of arms that are spaced apart and vertically connected between the first assembly ring (31) and the second assembly ring (32).

5. The cleaning machine according to claim 1, characterized in that: The second metal reinforcement (3) is formed as an annular plate extending up and down in the second accommodating groove (13), the upper edge of the annular plate contacts the upper edge of the second accommodating groove (13), and the lower edge of the annular plate contacts the lower edge of the second accommodating groove (13).

6. The cleaning machine according to claim 5, characterized in that: The upper edge of the annular plate is bent into the second accommodating groove (13) to form a fourth U-shaped structure (31'') with an opening arranged downward, and the outer side of the fourth U-shaped structure (31'') contacts the inner wall of the second accommodating groove (13); the lower edge of the annular plate is bent into the second accommodating groove (13) to form a fifth U-shaped structure (32'') with an opening arranged upward, and the outer side of the fifth U-shaped structure (32'') contacts the inner wall of the second accommodating groove (13); the annular plate and the fourth U-shaped structure (31'') and the fifth U-shaped structure (32'') on the annular plate together form a third cavity (30'') with the inner wall of the second accommodating groove (13).

7. The cleaning machine according to claim 6, characterized in that: A plurality of protrusions (33'') arranged at intervals are arranged on the inner wall surface of the annular plate.

8. The cleaning machine according to claim 7, characterized in that: The protrusion (33") is formed in a cross shape and is formed integrally with the annular plate, and the position on the outer wall of the annular plate corresponding to the protrusion (33") is recessed toward the washing chamber (10).

9. The cleaning machine according to claim 8, characterized in that: The outer peripheral wall of the lower part of the water tank body (1) corresponding to the second containing groove (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).

10. 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.

11. The cleaning machine according to claim 10, 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).

12. The cleaning machine according to claim 11, 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).

13. The cleaning machine according to claim 12, 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.

14. The cleaning machine according to any one of claims 1 to 9, characterized in that: The inner wall of the second metal reinforcement (3) is flush with the inner wall surface of the water tank body (1).

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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