A cleaning machine

Abstract

The present invention relates to a cleaning machine, comprising a water tank body and a spray arm. The water tank body is hollow inside to form a washing chamber, the spray arm is arranged in the washing chamber, a water outlet is provided on the bottom wall of the water tank body, a water storage tank is arranged below the water tank body, an opening connected to the water outlet is provided on the top wall of the water storage tank, a water outlet for water supply and discharge is provided on the side wall or / and the bottom wall of the water storage tank, and a water pumping assembly for pumping water from the water storage tank to the spray arm is also arranged on the water tank body. When the water flow is drawn upward, the bubbles carried in the water flow will be discharged from the edge of the water outlet, thereby eliminating the problem of easy air entrapment in the return water area, avoiding a large number of bubbles from being pumped into the spray arm with the water, so that the water pumping assembly maintains a high power and head, and improves the cleaning effect; and because the present invention places the functional components downward, only one water outlet is provided on the bottom wall of the water tank body, which greatly simplifies the bottom structure of the water tank body and facilitates disassembly and assembly and later maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a washing machine for washing dishes, fruits and vegetables. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: desktop, cabinet, and tank. Among them, desktop 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] The structure of the water tank cleaning machine on the market is mainly the structure mentioned in the applicant's prior application CN201310750968.1 "Water tank cleaning machine", which 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, 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 a drain hole, and a rotating spray arm connected to the water pump fluid and having a water outlet hole is arranged above the drain plate. In addition, in order to further improve the cleaning effect, the applicant's prior applications CN201810334714.4 and CN201810334713.X "Box structure of water tank cleaning machine" are based on the above structure, and a heating plate that can heat the water in the drain area is arranged at the bottom of the water tank body; in order to facilitate slag discharge, a slag basket corresponding to the drainage outlet is arranged at the bottom of the drain area.

[0004] The concave drain area on the above-mentioned sink body needs to be obtained by secondary deep drawing on the bottom of the sink body during production, and the forming process is extremely complicated. In addition, the liquid level fluctuates greatly during the cleaning process of the cleaning machine, and the water flow containing detergent is very easy to bubble. The drain area serves as the return water area of ​​the cleaning machine. When the liquid level is lower than the drain plate, gas will enter the drain area. As water continues to flow into the drain area, bubbles will also be trapped under the drain plate and difficult to eliminate, which makes the gas-liquid exchange in the drain area intense. Bubbles are easy to enter the water pump cavity with the water flow, causing the water pump power to drop rapidly and the water head of the spray arm to decrease rapidly, and even unable to meet basic cleaning needs. In addition, the heating plate, water pump, and drain are isolated and distributed at the bottom of the sink body, making installation and maintenance difficult. The heat dissipation of the above-mentioned stainless steel return water area is relatively large. The heating plate is located at the bottom of the return water area, and the heat loss on the back is relatively large, which affects the thermal efficiency. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a cleaning machine which eliminates the problem of air trapping in the return water area by independently placing the return water area downward, maintains a high power of the water pump, and improves the cleaning effect.

[0006] The second technical problem to be solved by the present invention is to provide a cleaning machine which can simplify the bottom wall structure of the water tank body and is easy to disassemble and assemble in view of the current status of the prior art.

[0007] The third technical problem to be solved by the present invention is to provide a washing machine which can effectively avoid the heat loss used to heat the washing water in view of the current status of the prior art.

[0008] The technical solution adopted by the present invention to solve at least one of the above-mentioned technical problems is: a cleaning machine, including a water tank body and a spray arm, the water tank body is hollow inside to form a washing chamber, and the spray arm is arranged in the washing chamber, characterized in that: a water outlet is provided on the bottom wall of the water tank body, a water storage tank is provided under the water tank body, an opening connected to the water outlet is provided on the top wall of the water storage tank, a drainage outlet for water supply and discharge is provided on the side wall and / or the bottom wall of the water storage tank, and a water pumping assembly for pumping water from the water storage tank to the spray arm is also provided on the water tank body.

[0009] Preferably, a vertically arranged support seat is provided on the inner bottom wall of the water storage tank, the upper end of the support seat passes through the water outlet and is located in the washing chamber, and the spray arm is rotatably provided on the upper end of the support seat. The spray arm is installed by using the support arm provided in the water storage tank, which does not occupy the installation space of the bottom wall of the water tank body, simplifies the installation structure of the bottom wall of the water tank body, and can prevent the formation of an irregular water storage area or accumulation of residues on the bottom wall of the water tank body.

[0010] In the above scheme, the water pump assembly includes an impeller assembly and a motor, a water inlet corresponding to the water outlet is opened on the bottom wall of the spray arm, a part of the impeller assembly extends into the water inlet of the spray arm, and the motor is arranged outside the bottom of the water tank and the output shaft passes through the water tank from bottom to top and is connected to the impeller assembly. The motor is arranged at the bottom of the water tank, but not directly connected to the water tank body, so that it is easy to disassemble and maintain it later.

[0011] Preferably, a guide sleeve that penetrates from top to bottom is provided on the upper part of the support seat, the upper edge of the guide sleeve is connected to the edge of the water inlet of the spray arm and smoothly transitions at the connection, the lower edge of the guide sleeve is located above the water outlet, and part of the impeller assembly is rotatably arranged in the guide sleeve. The impeller assembly includes a centrifugal impeller located at the upper part and an axial flow impeller located at the lower part, the centrifugal impeller is arranged on the inner side of the water inlet of the spray arm, and the axial flow impeller is arranged in the guide sleeve. The guide sleeve can provide a relatively closed space for the axial flow impeller, and cooperate with the axial flow impeller to generate a greater negative pressure, which is conducive to quickly sucking water into the spray arm and improving the water pumping performance.

[0012] In order to facilitate installation and assembly, a support arm extending vertically downward is provided on the outer peripheral wall of the guide sleeve, and the lower end of the support arm is connected to the inner bottom wall of the water storage tank.

[0013] Preferably, a filter net capable of filtering water entering the water tank is provided between the water inlet of the spray arm and the water outlet of the water tank body. The filter net is annular, and the upper end of the filter net is connected to the outer edge of the water inlet of the spray arm, and the lower end of the filter net is connected to the edge of the water outlet of the water tank body. The filter net can prevent large debris from entering the water tank. After the spray arm is removed, the filter net can be removed to clean the food residue attached to the filter net, which is convenient to use.

[0014] Preferably, the central part of the bottom wall of the water tank is recessed inward to form an installation cavity, the motor is arranged in the installation cavity and the output shaft vertically passes through the bottom wall of the water tank and extends upward. The drain port is provided on the bottom wall of the water tank and is located outside the installation cavity, and a traction valve capable of opening or closing the drain port is connected to the outside of the drain port. The above structure facilitates the installation of the motor and improves the drainage performance of the water tank.

[0015] As an improvement, a heating pipe with an annular structure is provided in the water storage tank, and the heating pipe is arranged in the water storage tank along the circumference of the water storage tank. The heating pipe can be spirally wound multiple times in the circumferential direction, and the heating pipe can be provided to heat the washing water. The heating pipe is provided in the water storage tank instead of being directly connected to the water tank body, which simplifies the assembly structure at the bottom of the water tank body and can prevent the formation of an irregular water storage area or accumulation of residues on the bottom wall of the water tank body. In addition, the heating pipe is completely placed in the water storage tank, and the heat energy can be completely used to heat the washing water, avoiding the problem of partial heat energy waste in the prior art, and having higher thermal efficiency.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the present invention sets a water storage tank outside the water tank body which is independently arranged from the water tank body and is used as a water return area. The water return area is located below the water tank body. When the water flows upward, the bubbles carried in the water flow will be discharged from the edge of the water outlet, thereby eliminating the problem of air being easily trapped in the water return area, avoiding a large number of bubbles from being pumped into the spray arm along with the water, and maintaining a high power and head of the water pump assembly, thereby improving the cleaning effect. Moreover, since the present invention places the functional components downward, only one water outlet is required on the bottom wall of the water tank body, which greatly simplifies the bottom structure of the water tank body and facilitates disassembly and assembly and later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the bottom structure;

[0019] Figure 3 for Figure 1 A cross-sectional view of

[0020] Figure 4 Schematic diagram of the structure of the support base in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings.

[0022] like Figures 1 to 4 As shown, the cleaning machine of this embodiment includes a water tank body 1 and a spray arm 31. The water tank body 1 is hollow inside to form a washing chamber 11, and the spray arm 31 is arranged in the washing chamber 11. A water outlet 12 is provided on the bottom wall of the water tank body 1, and a water storage tank 2 is arranged below the water tank body 1. An opening 21 connected to the water outlet 12 is provided on the top wall of the water storage tank 2, and a water outlet 22 for water supply and discharge is provided on the bottom wall of the water storage tank 2. A water pump assembly 3 for pumping water from the water storage tank 2 to the spray arm 31 is also provided on the water tank body 1.

[0023] like Figure 3 , 4 As shown, a vertically arranged support seat 4 is provided on the inner bottom wall of the water storage tank 2, and the upper end of the support seat 4 passes through the water outlet 12 and is located in the washing chamber 11. The spray arm 31 is rotatably provided on the upper end of the support seat 4 through a snap-fit ​​structure. The rotatable connection method between the spray arm 31 and the upper end of the support seat 4 is similar to the prior art and will not be described in detail here. The spray arm 31 is installed by using the support arm 4 provided in the water storage tank 2, which does not occupy the installation space of the bottom wall of the water tank body 1, simplifies the installation structure of the bottom wall of the water tank body 1, and can prevent the formation of an irregular water storage area or accumulation of residues on the bottom wall of the water tank body 1.

[0024] like Figure 3 As shown, the water pump assembly 3 of this embodiment includes an impeller assembly 32 and a motor 33. The bottom wall of the spray arm 31 is provided with a water inlet 311 arranged corresponding to the water outlet 12, and the top wall of the spray arm 31 is provided with a plurality of water spray holes 312 arranged at intervals. A part of the impeller assembly 32 extends into the water inlet 311 of the spray arm 31. The motor 33 is arranged at the outside of the bottom of the water storage tank 2, and the output shaft 331 passes through the water storage tank 2 from bottom to top and is connected to the impeller assembly 32. The central part of the bottom wall of the water storage tank 2 is recessed inward to form an installation cavity 23. The motor 33 is arranged in the installation cavity 23, and the output shaft 331 passes through the bottom wall of the water storage tank 2 vertically and extends upward. The drain port 22 is provided on the bottom wall of the water storage tank 2 and is located outside the installation cavity 23. The drain port 22 is connected to a traction valve 24 that can open or close the drain port 22. The above structure facilitates the installation of the motor 33 and improves the drainage performance of the water storage tank 2. The motor 33 is arranged at the bottom of the water tank 2, but not directly connected to the water tank body 1, so that it is convenient for disassembly and assembly and subsequent maintenance.

[0025] like Figure 4 As shown, the upper part of the support seat 4 of this embodiment is provided with a guide sleeve 41 that passes through from top to bottom. The upper edge of the guide sleeve 41 is connected to the edge of the water inlet 311 of the spray arm 31 and smoothly transitions at the connection. The lower edge of the guide sleeve 41 is located above the water outlet 12 and is slightly higher than the water outlet 12. In order to facilitate installation and assembly, three support arms 42 arranged at intervals and extending vertically downward are provided on the outer peripheral wall of the guide sleeve 41. The lower end of the support arm 42 is fixedly connected to the inner bottom wall of the water storage tank 2 by screws. Part of the impeller assembly 32 is rotatably arranged in the guide sleeve 41. The impeller assembly 32 of this embodiment includes a centrifugal impeller 321 located at the upper part and an axial flow impeller 322 located at the lower part. The centrifugal impeller 321 is arranged on the inner side of the water inlet 311 of the spray arm 31, and the axial flow impeller 322 is arranged in the guide sleeve 41. The guide sleeve 41 can provide a relatively closed space for the axial flow impeller 322 and cooperate with the axial flow impeller 322 to generate a greater negative pressure, which is conducive to quickly sucking water into the spray arm 31 and improving the water pumping performance.

[0026] like Figure 3 As shown, in this embodiment, a filter screen 5 capable of filtering water entering the water storage tank 2 is arranged between the water inlet 311 of the spray arm 31 and the water outlet 12 of the water tank body 1. The filter screen 5 is annular, and the upper end of the filter screen 5 is connected to the outer edge of the water inlet 311 of the spray arm 31, and the lower end of the filter screen 5 is connected to the edge of the water outlet 12 of the water tank body 1. The filter screen 5 can prevent large debris from entering the water storage tank 2. After the spray arm 31 is removed, the filter screen 5 can be removed to clean the food residue attached to the filter screen 5, which is convenient to use.

[0027] The water storage tank 2 of this embodiment is provided with a heating pipe 6 in an annular structure, and the heating pipe 6 is arranged in the water storage tank 2 along the circumference of the water storage tank 2. The heating pipe 6 can be spirally wound multiple times in the circumferential direction, and the heating pipe 6 can be provided to heat the washing water, and the heating pipe 6 is provided in the water storage tank 2 instead of being directly connected to the water tank body 1, which simplifies the assembly structure at the bottom of the water tank body 1, and can prevent the formation of an irregular water storage area or accumulation of residues on the bottom wall of the water tank body 1; and the heating pipe 5 is completely placed in the water storage tank 2, and the heat energy can be completely used to heat the washing water, avoiding the problem of partial heat energy waste in the prior art, and the thermal efficiency is higher.

[0028] When using the cleaning machine of this embodiment, the amount of washing water added to the washing chamber 1 once is partially collected at the bottom of the water tank body 1 after filling the water storage tank 2, but the water level is preferably lower than the top of the filter 5. During cleaning, the motor 33 is running, driving the impeller assembly 32 to rotate, and the impeller assembly 32 cooperates with the guide sleeve 41 and the inner wall of the water inlet 311 of the spray arm 31 to draw water from the water storage tank 2 and the bottom of the water tank body 1 into the spray arm 31 and spray it out to clean the dishes or fruits and vegetables in the washing chamber 11. In the above cleaning process, In the process, since most of the water is collected in the water storage tank 2, the liquid level at the bottom of the water tank body 1 fluctuates less, and the bubbles carried in the water flow will be discharged from the edge of the drain port 12, thereby eliminating the problem of air entrapment in the return water area, and preventing a large number of bubbles from being pumped into the spray arm 31 along with the water, so that the water pump assembly 3 maintains a high power and lift, and improves the cleaning effect; and since the functional components are placed at the bottom, only one drain port 12 is required on the bottom wall of the water tank body 1, which greatly simplifies the bottom structure of the water tank body 1 and facilitates disassembly and assembly and subsequent maintenance.

Claims

1. A cleaning machine, comprising a water tank body (1) and a spray arm (31), wherein the water tank body (1) is hollow inside to form a washing chamber (11), and the spray arm (31) is arranged in the washing chamber (11), characterized in that: The bottom wall of the water tank body (1) is provided with a water outlet (12); a water storage tank (2) is arranged below the water tank body (1); an opening (21) communicating with the water outlet (12) is arranged on the top wall of the water storage tank (2); a water outlet (22) for discharging water is arranged on the side wall or / and the bottom wall of the water storage tank (2); and a water pumping assembly (3) for pumping water from the water storage tank (2) to the spray arm (31) is also arranged on the water tank body (1); A vertically arranged support seat (4) is provided on the inner bottom wall of the water storage tank (2); the upper end of the support seat (4) passes through the water outlet (12) and is located in the washing chamber (11); and the spray arm (31) is rotatably provided on the upper end of the support seat (4); The water pump assembly comprises an impeller assembly (32) and a motor (33); a water inlet (311) arranged corresponding to the water outlet (12) is opened on the bottom wall of the spray arm (31); a part of the impeller assembly (32) extends into the water inlet (311) of the spray arm (31); the motor (33) is arranged on the outside of the bottom of the water storage tank (2); and the output shaft (331) passes through the water storage tank (2) from bottom to top and is connected to the impeller assembly (32); The upper part of the support seat (4) is provided with a guide sleeve (41) which penetrates from top to bottom, the upper edge of the guide sleeve (41) is connected to the edge of the water inlet (311) of the spray arm (31) and the connection is smoothly transitioned, the lower edge of the guide sleeve (41) is located above the water outlet (12), and part of the impeller assembly (32) is rotatably arranged in the guide sleeve (41); The impeller assembly (32) comprises a centrifugal impeller (321) located at the upper part and an axial flow impeller (322) located at the lower part, the centrifugal impeller (321) being arranged on the inner side of the water inlet (311) of the spray arm (31), and the axial flow impeller (322) being arranged in the guide sleeve (41); A support arm (42) extending vertically downward is provided on the outer peripheral wall of the guide sleeve (41), and the lower end of the support arm (42) is connected to the inner bottom wall of the water storage tank (2).

2. The cleaning machine according to claim 1, characterized in that: A filter screen (5) capable of filtering water entering the water storage tank (2) is arranged between the water inlet (311) of the spray arm (31) and the water outlet (12) of the water tank body (1); the filter screen (5) is annular, the upper end of the filter screen (5) is connected to the outer edge of the water inlet (311) of the spray arm (31), and the lower end of the filter screen (5) is connected to the edge of the water outlet (12) of the water tank body (1).

3. The cleaning machine according to claim 1, characterized in that: The central portion of the bottom wall of the water storage tank (2) is recessed inward to form a mounting cavity (23), the motor (33) is arranged in the mounting cavity (23), and the output shaft (331) vertically passes through the bottom wall of the water storage tank (2) and extends upward.

4. The cleaning machine according to claim 3, characterized in that: The drain port (22) is formed on the bottom wall of the water storage tank (2) and is located outside the installation cavity (23). A traction valve (24) capable of opening or closing the drain port (22) is connected to the outside of the drain port (22).

5. The cleaning machine according to any one of claims 1 to 4, characterized in that: A heating pipe (6) in an annular structure is provided in the water storage tank (2), and the heating pipe (6) is arranged in the water storage tank (2) along the circumference of the water storage tank (2).

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