A cleaning machine

Abstract

The present invention relates to a cleaning machine, comprising a plastic sink body with a washing chamber, and also comprising a first and a second metal reinforcement. The shelf of the sink body is supported on a cabinet countertop through a metal assembly frame, and the second metal reinforcement is sleeved on the periphery of the sink body. The present invention manufactures the sink body with plastic, which has strong plasticity and is convenient for deepening the depth of the sink body as needed, greatly reducing the production cost; 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, and can also resonate with the ultrasonic sounding device in the sink cleaning machine to improve the ultrasonic cleaning effect; the second metal reinforcement is arranged on the periphery of the sink body, which can prevent the sink body from being deformed by heat or cold, and can also reduce the noise generated by the water flow hitting the inner wall of the sink body, and accelerate the condensation speed of high-temperature steam, accelerate the drying speed in the washing chamber, and improve the 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, reduce noise and accelerate the condensation speed of steam 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 first metal reinforcement and a second metal reinforcement, and the second metal reinforcement is sleeved on the outer periphery 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 circumferentially arranged receiving groove is provided on the inner wall surface of the upper part of the water tank body, and the first metal reinforcement is arranged in the receiving 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 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.

[0011] 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.

[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 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.

[0014] Preferably, the inner wall of the first metal reinforcement is flush with the inner wall surface of the water tank body.

[0015] 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.

[0016] Preferably, the second metal reinforcement includes a main body and a locking rod, the main body is formed into a U shape and is sleeved on the outer periphery of the lower middle part of the sink body, the two ends of the main body extend out of the corresponding outer walls of the sink body, and the locking rod is connected between the two ends of the main body to lock the main body on the sink body.

[0017] For easy assembly, the first end of the body is provided with a first mounting hole, and correspondingly, the second end of the body is provided with a second mounting hole, the first end of the locking rod is limited outside the first end of the body, and the second end of the locking rod passes through the first mounting hole and the second mounting hole and is locked outside the second end of the body by a nut. The middle and lower parts of the two oppositely arranged side walls of the water tank body are provided with sliding grooves through which the two ends of the body can slide.

[0018] Preferably, the second metal reinforcement is annular and is sleeved on the outer periphery of the lower middle portion of the water tank body, and the outer periphery of the water tank body is formed with a first reinforcement ring located on the outer periphery of the metal reinforcement and abutting against the upper edge of the metal reinforcement.

[0019] In order to improve the installation stability, the lower edge of the second metal reinforcement extends downward to form a connecting arm that can fix it on the water tank body. The connecting arm is L-shaped, and the lower part of the connecting arm is bent toward the bottom of the water tank body and fixed on the water tank body.

[0020] Preferably, the second metal reinforcement includes a reinforcement and a shell, the shell is sleeved on the outer periphery of the middle and lower part of the water tank body and forms a first gap with the outer side wall of the water tank body, the reinforcement is arranged in the first gap and connected to the water tank body and the shell respectively. More preferably, the lower end of the shell has a bottom plate, and in the assembled state, the bottom plate is located below the water tank body, and a second gap is formed between the bottom plate of the shell and the lower wall of the water tank body, and the second gap and the first gap together constitute a cavity arranged around the middle and lower part of the water tank body. The above structure can achieve a better noise reduction effect.

[0021] Preferably, the two side edges of the reinforcement are arranged close to the outer side wall of the water tank body, and the middle part of the reinforcement protrudes outward from the outer side wall of the water tank body to form a folded portion extending from top to bottom, and the outer wall surface of the folded portion is connected to the inner wall surface of the shell. This structure is convenient for assembly and connection on the one hand, and on the other hand, the folded portion is combined with the cavity structure to achieve a better noise reduction effect.

[0022] Preferably, the second metal reinforcement includes a first assembly ring, a second assembly ring and a connecting arm, the first assembly ring is sleeved on the outer periphery of the lower part of the sink body, the second assembly ring is sleeved on the outer periphery of the middle part of the sink body, and the connecting arm is a plurality of spaced-apart vertically connected between the first assembly ring and the second assembly ring.

[0023] In order to enhance the supporting strength of the second metal reinforcement, the second metal reinforcement further comprises a third assembly ring, which is sleeved on the outer periphery of the water tank body and located between the first assembly ring and the second assembly ring, and the third assembly ring is connected to the middle of each connecting arm. A second reinforcement ring arranged along the circumferential direction is convexly provided on the outer peripheral wall of the water tank body, and the first assembly ring is supported on the second reinforcement ring.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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 sounding 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, can reduce the noise generated by the water flow hitting the inner wall of the sink body, and accelerate the condensation rate of high-temperature steam, accelerate the drying rate in the washing chamber, and improve the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0029] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0030] Figure 3 for Figure 1 A partial cross-sectional view of

[0031] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of part A;

[0032] Figure 5 A schematic structural diagram of the assembly relationship between the second metal reinforcement member and the water tank body in Embodiment 1 of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0034] Figure 7 for Figure 6 Exploded diagram of

[0035] Figure 8 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0036] Fig. 9 for Figure 8 Schematic diagram of some structures;

[0037] Fig.10 for Figure 8 A cross-sectional view of

[0038] Fig.11 This is a schematic diagram of the structure of Example 4 of the present invention. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below with reference to the accompanying drawings.

[0040] Embodiment 1:

[0041] like Figures 1 to 5 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.

[0042] 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. The bottom of the water tank body 1 is provided with an ultrasonic generator 4, which can effectively improve the cleaning effect.

[0043] 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.

[0044] 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 circumferentially arranged receiving groove 13 is provided on the inner wall surface of the upper part of the water tank body 1, and the first metal reinforcement 3' is arranged in the 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 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.

[0045] Specifically, the first metal reinforcement 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 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 first metal reinforcement 3'. The outer wall surface of the first metal reinforcement 3' is inwardly concave at the guide strip 33'. The convex-inside and concave-outside 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, 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, 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 on the one hand, and can also play a sound insulation effect to a certain extent on the other hand.

[0046] In this embodiment, a second metal reinforcement 3 is also sleeved on the outer periphery of the middle and lower part of the water tank body 1. Specifically, the second metal reinforcement 3 of this embodiment includes a body 31 and a locking rod 32. The body 31 is formed into a U shape and sleeved on the outer periphery of the middle and lower part of the water tank body 1. The two ends of the body 31 extend out of the corresponding outer walls of the water tank body 1. The locking rod 32 is connected between the two ends of the body 31 so as to lock the body 31 on the water tank body 1. In order to facilitate assembly, a first mounting hole 311 is opened at the first end of the body 31, and correspondingly, a second mounting hole 312 is opened at the second end of the body 31. The first end of the locking rod 32 is limited to the outer side of the first end of the body 31 by a limiting block 321, and the second end of the locking rod 32 passes through the first mounting hole 311 and the second mounting hole 312 and is locked to the outer side of the second end of the body 31 by a nut 322. A sliding groove 16 is opened at the middle and lower part of the two oppositely arranged side walls of the water tank body 1 so that the two ends of the body 31 can slide through. When the sink body 1 is made of plastic, considering the angle and height of the water sprayed by the spray arm 5 during the cleaning process of the cleaning machine, the lower and middle part of the sink body 1 is the area that directly contacts the water output of the spray arm 5 the most. Therefore, this part is most likely to be deformed due to heat. Enclosing the above-mentioned second metal reinforcement 3 outside the sink body 1 can effectively reduce the deformation of the sink body 1 caused by heat; at the same time, the water output of the spray arm 5 will produce a large noise when hitting the inner wall of the sink body 1, and the above-mentioned second metal reinforcement 3 can also play a role in reducing the noise; in addition, since the cleaning machine generally adopts the method of alternating hot and cold water for cleaning, a large amount of steam will remain in the washing chamber 10 after the hot water cleaning is completed. The plastic material is not conducive to the condensation of steam. After adopting the above-mentioned second metal reinforcement 3, it is conducive to the rapid condensation of high-temperature steam, thereby increasing the drying speed inside the sink body 1, which is beneficial to the cleaning process.

[0047] 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 outer periphery of the middle and 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 reduce the noise generated by the water flow hitting the inner wall of the sink body 1, and accelerate the condensation speed of high-temperature steam, accelerate the drying speed in the washing chamber 10, and improve the cleaning effect.

[0048] Embodiment 2:

[0049] The difference between this embodiment and Embodiment 1 is that the specific structure of the metal reinforcement is different.

[0050] like Figure 6 , 7 As shown, the second metal reinforcement 3a of this embodiment is annular and is sleeved on the outer periphery of the middle and lower part of the water tank body 1. The outer periphery of the water tank body 1 is formed with a first reinforcement ring 14 located on the outer periphery of the second metal reinforcement 3a and abutting against the upper edge of the second metal reinforcement 3a. In order to improve the installation stability, the lower edge of the second metal reinforcement 3a extends downward to form a first connecting arm 31a that can fix it on the water tank body 1. The first connecting arm 31a is L-shaped, and the lower part of the first connecting arm 31a is bent toward the bottom of the water tank body 1 and fixed to the water tank body 1 by screws.

[0051] Embodiment 3:

[0052] The difference between this embodiment and Embodiment 1 is that the specific structure of the metal reinforcement is different.

[0053] like Figure 8 , 9 As shown in Figures 10 and 11, the second metal reinforcement 3b of this embodiment includes a reinforcement 31b and a shell 32b. The shell 32b is sleeved on the outer periphery of the middle and lower part of the water tank body 1 and forms a first gap 33b with the outer wall of the water tank body 1. The reinforcement 31b is arranged in the first gap 33b and is connected to the water tank body 1 and the shell 32b respectively. The lower end of the shell 32b has a bottom plate 321b. In the assembled state, the bottom plate 321b is located below the water tank body 1. A second gap 34b is formed between the bottom plate 321b of the shell 32b and the lower wall of the water tank body 1. The second gap 34b and the first gap 33b together constitute a cavity arranged around the middle and lower part of the water tank body 1. The edges of the two sides of the reinforcement 31b are arranged close to the outer wall of the water tank body 1, and the middle part of the reinforcement 31b protrudes outward from the outer wall of the water tank body 1 to form a folded portion 311b extending from top to bottom, and the outer wall surface of the folded portion 311b is connected to the inner wall surface of the shell 32b. On the one hand, this structure is easy to assemble and connect, and on the other hand, the folded portion is combined with the cavity structure to achieve a better noise reduction effect.

[0054] Embodiment 4:

[0055] The difference between this embodiment and Embodiment 1 is that the specific structure of the metal reinforcement is different.

[0056] like Fig.11As shown, the second metal reinforcement 3c of this embodiment includes a first assembly ring 31c, a second assembly ring 32c and a second connecting arm 33c. The first assembly ring 31c is sleeved on the outer periphery of the lower part of the water tank body 1, the second assembly ring 32c is sleeved on the outer periphery of the middle part of the water tank body 1, and the second connecting arm 33c is a plurality of vertically connected between the first assembly ring 31c and the second assembly ring 32c at intervals. In order to enhance the supporting strength of the second metal reinforcement 3c, the second metal reinforcement 3c also includes a third assembly ring 34c, which is sleeved on the outer periphery of the water tank body 1 and located between the first assembly ring 31c and the second assembly ring 32c, and the third assembly ring 34c is connected to the middle part of each second connecting arm 33c. A second reinforcement ring 15 arranged along the circumferential direction is protruded on the outer peripheral wall of the water tank body 1, and the first assembly ring 31c is supported on the second reinforcement ring 15. In this embodiment, the first assembly ring 31c, the second assembly ring 32c, the second connecting arm 33c, and the third assembly ring 34c are integrally formed.

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 sleeved on the outer periphery 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'); The inner wall surface of the upper part of the water tank body (1) is provided with a circumferentially arranged receiving groove (13), and the first metal reinforcement member (3') is arranged in the receiving groove (13); and a reinforcing rib (7) is arranged on the outer peripheral wall of the water tank body (1) in the area corresponding to the receiving groove (13); The first metal reinforcement (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 arranged downward, and the outer side of the first U-shaped structure (31') contacts 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 arranged upward, and the outer side of the second U-shaped structure (32') contacts 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: The second metal reinforcement (3) comprises a body (31) and a locking rod (32); the body (31) is formed into a U shape and is sleeved on the outer periphery of the water tank body (1); the two ends of the body (31) extend out of the corresponding outer walls of the water tank body (1); the locking rod (32) is connected between the two ends of the body (31) so as to lock the body (31) on the water tank body (1).

4. The cleaning machine according to claim 3, characterized in that: The first end of the body (31) is provided with a first mounting hole (311), and correspondingly, the second end of the body (31) is provided with a second mounting hole (312); the first end of the locking rod (32) is limited outside the first end of the body (31), and the second end of the locking rod (32) passes through the first mounting hole (311) and the second mounting hole (312) and is locked to the outside of the second end of the body (31) by a nut (322).

5. The cleaning machine according to claim 3, characterized in that: The middle and lower parts of the two oppositely arranged side walls of the water tank body (1) are provided with sliding grooves (16) through which the two ends of the body (31) can slide.

6. The cleaning machine according to claim 1, characterized in that: The second metal reinforcement is annular and is sleeved on the outer periphery of the lower middle portion of the water tank body (1); the outer periphery of the water tank body (1) is formed with a first reinforcement ring (14) located on the outer periphery of the second metal reinforcement and abutting against the upper edge of the second metal reinforcement.

7. The cleaning machine according to claim 6, characterized in that: The lower edge of the second metal reinforcement extends downward to form a first connecting arm (31a) capable of fixing the second metal reinforcement on the water tank body (1).

8. The cleaning machine according to claim 7, characterized in that: The first connecting arm (31a) is L-shaped, and the lower part of the first connecting arm (31a) is bent toward the bottom of the water tank body (1) and fixed on the water tank body (1).

9. The cleaning machine according to claim 1, characterized in that: The second metal reinforcement comprises a reinforcement member (31b) and an outer shell (32b); the outer shell (32b) is sleeved on the outer periphery of the middle and lower part of the water tank body (1) and forms a first gap (33b) with the outer wall of the water tank body (1); the reinforcement member (31b) is arranged in the first gap (33b) and is respectively connected to the water tank body (1) and the outer shell (32b).

10. The cleaning machine according to claim 9, characterized in that: The lower end of the shell (32b) has a bottom plate (321b); in the assembled state, the bottom plate (321b) is located below the water tank body (1); a second gap (34b) is formed between the bottom plate (321b) of the shell (32b) and the lower wall surface of the water tank body (1); the second gap (34b) and the first gap (33b) together form a cavity arranged around the middle and lower part of the water tank body (1).

11. The cleaning machine according to claim 10, characterized in that: The two side edges of the reinforcement member (31b) are arranged close to the outer wall of the water tank body (1), and the middle part of the reinforcement member (31b) protrudes outward from the outer wall of the water tank body (1) to form a folded portion (311b) extending from top to bottom, and the outer wall surface of the folded portion (311b) is connected to the inner wall surface of the outer shell (32b).

12. The cleaning machine according to claim 1, characterized in that: The second metal reinforcement comprises a first assembly ring, a second assembly ring (32c) and a second connecting arm (33c); the first assembly ring is sleeved on the outer periphery of the lower part of the water tank body (1); the second assembly ring (32c) is sleeved on the outer periphery of the middle part of the water tank body (1); and the second connecting arm (33c) is a plurality of arms which are spaced apart and vertically connected between the first assembly ring and the second assembly ring (32c).

13. The cleaning machine according to claim 12, characterized in that: The second metal reinforcement also includes a third assembly ring (34c), which is sleeved on the outer periphery of the water tank body (1) and located between the first assembly ring and the second assembly ring (32c), and the third assembly ring (34c) is connected to the middle part of each second connecting arm (33c).

14. The cleaning machine according to claim 12, characterized in that: A second reinforcement ring (15) is convexly provided on the outer peripheral wall of the water tank body (1) and is arranged in the circumferential direction, and the first assembly ring is supported on the second reinforcement ring (15).

15. The cleaning machine according to any one of claims 1 to 14, 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.

16. The cleaning machine according to claim 15, 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).

17. The cleaning machine according to claim 16, 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).

18. The cleaning machine according to claim 17, 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.

19. The cleaning machine according to any one of claims 1 to 14, characterized in that: An ultrasonic generating device (4) is provided at the bottom of the water tank body (1).

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