A cleaning machine

Abstract

The present invention relates to a washing machine, comprising an inner tank, on which an air inlet is provided; a first shell, which has an air flow channel inside, and a first air outlet connecting the air flow channel and the air inlet of the inner tank is provided on the first shell; a first fan, and a first air outlet of the first fan is fluidly connected to the air flow channel of the first shell; a heating element; the first shell is also provided with a second air outlet fluidly connected to the air flow channel, and along the flow direction of the air flow, the second air outlet is located downstream of the heating element. The heating element heats the air flow entering the first shell, and then the generated hot air flow flows out from the first air outlet of the first shell to the washing chamber of the inner tank in one way to dry the tableware in the washing chamber, and flows out from the second air outlet of the first shell in the other way to heat the air outside the inner tank to balance the temperature difference between the inside and outside of the inner tank.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to a cleaning machine. Background Art

[0002] A dishwasher is a household appliance used for automatic dishwashing, which is very popular among consumers. However, after washing, there is a lot of residual water in the inner tank and on the dishes. This residual water is dried by the residual heat of the inner tank and the dishes. However, due to the large amount of residual water in the inner tank and the rapid cooling of the inner tank, the residual heat of the inner tank is not enough to evaporate the residual water, so there is still a lot of water in the inner tank for a long time after washing the dishes. If the dishwasher door is closed for a long time, the odor in the dishwasher will be strong and bacteria will easily breed.

[0003] In response to the above problems, the Chinese utility model patent with patent number CN201820319612.0 (publication number CN208958049U) discloses a "drying system for a dishwasher", including an inner tank and a breather, the breather is arranged outside the inner tank, the breather is provided with an exhaust channel, the exhaust channel connects the inside and outside of the inner tank, and also includes a hot air generating device, the hot air generating device is provided with a hot air output end, the hot air output end is connected to the inside of the inner tank, the inner tank is provided with an air duct nut corresponding to the hot air output end, the air duct nut fixes the hot air output end to the inner tank wall, the air duct nut is provided with a hole position, the hole position is connected to the inside of the inner tank and the hot air output end, the hole position includes a central hole and peripheral holes, and the peripheral holes are evenly distributed in a ring shape around the central hole.

[0004] The hot air generating device comprises a fan, a heating element and an air duct assembly, wherein an air inlet duct is arranged in the air duct assembly, the heating element is arranged in the air inlet duct, the fan is provided with an air suction port and an air blowing port, the air blowing port is connected to one end of the air inlet duct, and the other end of the air inlet duct is a hot air output end. The fan is a centrifugal fan, and the heating element is a PTC heating element

[0005] In order to dry the dishes quickly after washing, the hot air temperature input into the inner tank by the hot air generating device is relatively high. Although this can speed up the drying of the dishes, after the hot air enters the inner tank, the temperature inside the inner tank is high and the temperature outside the inner tank is low. The temperature difference will form condensation water. Over time, the condensation water will gather and flow inside the cabinet, corroding the cabinet. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a cleaning machine capable of balancing the temperature difference between the inside and outside of an inner tank 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, comprising

[0008] An inner tank has a washing chamber therein, and an air inlet hole in fluid communication with the washing chamber is provided on a first side wall of the inner tank;

[0009] A first shell is located outside the inner container and is mounted on a first side wall of the inner container, wherein an air flow channel is provided inside the first shell, and a first air outlet hole is provided on the first shell to connect the air flow channel with the air inlet hole of the inner container;

[0010] A first fan having a first air inlet and a first air outlet, wherein the first air inlet of the first fan is in fluid communication with the outside, and the first air outlet of the first fan is in fluid communication with an air flow channel of the first housing;

[0011] A heating element is disposed in the air flow channel, and along the air flow direction, the heating element is located upstream of the first air outlet;

[0012] The feature is that: a second air outlet hole in fluid communication with the air flow channel is also provided on the first shell, and along the flow direction of the air flow, the second air outlet hole is located downstream of the heating element.

[0013] In order to release the pressure to balance the pressure inside and outside the inner tank when the pressure in the inner tank is high, an exhaust hole in fluid communication with the washing chamber is provided on the second side wall of the inner tank, and a second shell installed on the outside of the inner tank is also provided on the second side wall thereof, and an exhaust channel is provided inside the second shell, and a breathing port and an exhaust port connected through the exhaust channel are provided on the second shell, and along the airflow direction, the breathing port is located upstream of the exhaust port, and the breathing port is in fluid communication with the exhaust hole on the inner tank. During the tableware drying stage, the hot air flow generated in the first shell enters the inner tank, which can easily cause the pressure in the inner tank to increase. In other words, the high-temperature gas generated when the washing machine is working causes the air pressure in the inner tank to be too high, and gas exchange with the outside world is required through the exhaust hole to balance the air pressure in the inner tank of the dishwasher, and the high-temperature gas in the inner tank is discharged through the breathing port and the exhaust port.

[0014] In order to protect the inner liner, an outer shell is provided outside the inner liner, and there is a gap between the inner wall of the outer shell and the outer wall of the inner liner so as to form a sandwich between the outer shell and the inner liner, and the first shell and the second shell are both located in the sandwich. The outer shell not only protects the inner liner, but also forms a sandwich between the outer shell and the inner liner, so that the hot air flow flowing out of the second air outlet of the first shell heats the space of a specific volume of the sandwich, which can quickly increase the temperature outside the inner liner and balance the temperature difference between the inside and outside of the inner liner compared to the air flow flowing out of the second air outlet directly discharged into the atmosphere.

[0015] Because a sandwich is formed between the outer shell and the inner shell, the hot gas flowing out of the second air outlet of the first shell will be gathered in the sandwich and cannot be discharged, which will cause the air pressure in the sandwich to increase over time. Therefore, the second shell is provided with an air inlet that is fluidly connected to the second air outlet of the first shell, and the second shell is provided with an air outlet channel that connects the air inlet and the exhaust channel. In this way, the hot air flow flowing out of the second air outlet of the first shell can flow into the second shell through the air inlet, and finally be discharged into the atmosphere from the exhaust port of the second shell.

[0016] In order to allow the hot air flow in the interlayer to flow into the second shell, the second shell is provided with guide plates on both sides of the air inlet, and the two guide plates form a guide channel in fluid communication with the air inlet, and the guide channel is in a cone shape with a gradually decreasing diameter along the air flow direction; or the air inlet on the second shell is in a cone shape with a gradually decreasing diameter along the air flow direction. The cone structure is conducive to gathering the hot air flow.

[0017] In order to discharge the gas in the second shell as quickly as possible, the air outlet channel and the exhaust channel intersect and are connected, and a second fan is provided in the exhaust channel. Along the flow direction of the airflow, the second fan is located downstream of the intersection of the air outlet channel and the exhaust channel, and the second air inlet of the second fan is fluidly connected with the breathing port and the air outlet channel, and the second air outlet of the second fan is fluidly connected with the exhaust port on the second shell. Under the suction effect of the second fan, the airflow entering the air outlet channel and the airflow flowing out of the exhaust hole of the inner liner can be sucked away as quickly as possible and discharged into the atmosphere from the exhaust port.

[0018] In order to further speed up the flow of hot air into the second shell, a plurality of air holes are provided on the second shell at positions corresponding to the air outlet channel, and the plurality of air holes are arranged at intervals along the extension direction of the air outlet channel. The hot air flow flowing out of the second air outlet of the first shell can not only enter the second shell from the air inlet of the second shell, but also enter the second shell from the air holes.

[0019] Compared with the prior art, the advantages of the present invention are as follows: a heating element is arranged in the first shell body, and the heating element heats the air flow entering the first shell body. Then the generated hot air flow flows out from the first air outlet of the first shell body to the washing chamber of the inner tank in one direction to dry the tableware and the like in the washing chamber. The other direction flows out from the second air outlet of the first shell body to heat the air outside the inner tank, thereby balancing the temperature difference between the inside and outside of the inner tank and preventing the formation of condensation water outside the inner tank due to the temperature difference between the inside and the outside of the inner tank being high while the temperature outside is low during the drying process of the tableware. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2for Figure 1 A partial cross-sectional schematic diagram of

[0022] Figure 3 for Figure 1 A schematic diagram of the structure without the outer shell;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure in another direction;

[0024] Figure 5 for Figure 4 A schematic structural diagram of one of the half shells of the second shell;

[0025] Figure 6 for Figure 3 Schematic diagram of the decomposition. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 6 As shown, the cleaning machine of this preferred embodiment includes an inner tank 1, a first shell 2, a second shell 3, a first fan 4, a second fan 5, an outer shell 6, etc.

[0028] The inner tank 1 has a washing chamber 11 inside, and an air inlet 12 is provided on the first side wall 14 of the inner tank 1 and is fluidly connected to the washing chamber 11. The first shell 2 is located outside the inner tank 1 and is installed on the first side wall 14 of the inner tank 1. An exhaust hole 13 is provided on the second side wall 15 of the inner tank 1 and is fluidly connected to the washing chamber 11. The second shell 3 is located outside the inner tank 1 and is installed on the second side wall 15 of the inner tank 1. In this embodiment, the first side wall 14 and the second side wall 15 of the inner tank 1 are arranged opposite to each other, and are the right side wall and the left side wall respectively.

[0029] like Figure 2 As shown, the outer shell 6 is sleeved on the outside of the inner shell 1 , and there is a distance between the inner wall of the outer shell 6 and the outer wall of the inner shell 1 so as to form an interlayer 61 between the outer shell 6 and the inner shell 1 , and the first shell 2 and the second shell 3 are both located in the interlayer 61 .

[0030] like Figure 6 As shown, the first shell 2 has an air flow channel 21 inside, the first fan 4 has a first air inlet 41 and a first air outlet 42, the first air inlet 41 of the first fan 4 is fluidly connected to the outside, and the first air outlet 42 of the first fan 4 is fluidly connected to the air flow channel 21 of the first shell 2.

[0031] The first shell 2 is provided with a first air outlet 22 connecting the airflow channel 21 and the air inlet 12 of the inner liner 1. In this embodiment, the first air outlet 22 and the air inlet 12 are arranged correspondingly. The first shell 2 is also provided with a second air outlet 23 in fluid communication with the airflow channel 21. A heating element 24 is provided in the airflow channel 21. The heating element 24 in this embodiment is a PTC heating resistor. Along the flow direction of the airflow, the first air outlet 22 and the second air outlet 23 are both located downstream of the heating element 24.

[0032] The heating element 24 heats the airflow entering the first shell 2, and then the generated hot airflow flows out from the first air outlet 22 of the first shell 2 to the washing chamber 11 of the inner tank 1 to dry the tableware and the like in the washing chamber 11. However, when the washing machine is drying the tableware in the washing chamber 11, the drying temperature inside the inner tank 1 is high, and the temperature outside the inner tank 1 (the interlayer 61 between the inner tank 1 and the outer shell 6) is low, which is easy to form condensed water. These condensed waters have many disadvantages, such as water accumulation, corrosion of machines and cabinets, and aging of machine circuits. Therefore, the design of this embodiment allows the hot airflow to flow out from the second air outlet 23 in another way, and self-heat and dry in the interlayer 61 to avoid the generation of condensed water in the interlayer 61. In this way, drying hot air is input into the inner tank 1 and output outside the inner tank 1 (in the interlayer 61), which can balance the temperature difference between the inner tank 1 and the outside, and avoid the formation of condensed water.

[0033] like Figure 4 , 5 As shown, the second shell 3 has an exhaust channel 31 inside, and the second shell 3 is provided with a breathing port 32 and an exhaust port 33 connected through the exhaust channel 31. Along the airflow direction, the breathing port 32 is located upstream of the exhaust port 33, and the breathing port 32 is correspondingly arranged with the exhaust hole 13 on the inner tank 1 and is fluidically connected. During the tableware drying stage, the hot air flow generated in the first shell 2 enters the inner tank 1, which can easily cause the pressure in the inner tank 1 to increase. In other words, the high-temperature gas generated when the washing machine is working causes the air pressure in the inner tank 1 to be too high, and it is necessary to exchange gas with the outside through the exhaust hole 13 to balance the air pressure in the inner tank 1 of the dishwasher. The high-temperature gas in the inner tank 1 is discharged through the breathing port 32 and the exhaust port 33.

[0034] Because of the interlayer 61 formed between the outer shell 6 and the inner liner 1, if the outer shell 6 does not have a through hole connected to the interlayer 61 for the air flow in the interlayer 61 to flow out, the hot gas flowing out from the second air outlet 23 of the first shell 2 will be gathered in the interlayer 61 and cannot be discharged. Over time, it will cause the air pressure in the interlayer 61 to increase. Therefore, in this embodiment, an air inlet 34 that is fluidly connected to the second air outlet 23 of the first shell 2 is provided on the second shell 3. The interlayer 61 is a closed space, which is equivalent to a channel connecting the second air outlet 23 and the air inlet 34. The second shell 3 is provided with an air outlet channel 35 connecting the air inlet 34 and the exhaust channel 31. In this way, the hot air flow flowing out of the second air outlet 23 of the first shell 2 can flow into the second shell 3 through the air inlet 34, and finally be discharged to the atmosphere from the exhaust port 33 of the second shell 3. The air flow direction is as follows: Figure 3 , 4 As shown by the dashed arrow in .

[0035] The air outlet channel 35 and the exhaust channel 31 intersect and are connected, and the second fan 5 is arranged in the exhaust channel 31, and along the flow direction of the airflow, the second fan 5 is located downstream of the intersection of the air outlet channel 35 and the exhaust channel 31.

[0036] The second fan 5 has a second air inlet and a second air outlet, the breathing port 32 and the air outlet channel 35 are both fluidly connected to the second air inlet of the second fan 5, and the second air outlet of the second fan 5 is fluidly connected to the exhaust port 33 on the second housing 3. Under the suction effect of the second fan 5, the airflow entering the air outlet channel 35 and the airflow flowing out of the exhaust hole 13 of the liner 1 can be sucked away as quickly as possible and discharged into the atmosphere from the exhaust port 33.

[0037] In this embodiment, guide plates 36 are provided on both sides of the air inlet 34 of the second shell 3. The two guide plates 36 enclose a guide channel 361 in fluid communication with the air inlet 34. The guide channel 361 is in a cone shape with a gradually decreasing diameter along the air flow direction, so as to facilitate the gathering of hot air flow and allow it to enter the second shell 3. Of course, the guide plates 36 may not be provided, and the air inlet 34 on the second shell 3 may be directly in a cone shape with a gradually decreasing diameter along the air flow direction. However, due to the limitation of the wall thickness of the second shell 3, the depth of the air inlet 34 is relatively shallow, and the effect of gathering and guiding the hot air flow is limited.

[0038] In addition, a plurality of air holes 37 are provided on the second shell 3 at positions corresponding to the air outlet channel 35, and the plurality of air holes 37 are arranged at intervals along the extension direction of the air outlet channel 35. The hot air flow flowing out of the second air outlet 23 of the first shell 2 can enter the second shell 3 not only from the air inlet 34 of the second shell 3, but also from the air holes 37.

[0039] The first fan 4 and the second fan 5 can both adopt existing fan structures; the first shell 2 and the second shell 3 are both formed by two half shells being matched together, and the drawings of this embodiment only show one half shell of the second shell 3.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only for illustration and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0041] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts, which are collectively referred to as the first part and the second part respectively below, that is, fluid gas, liquid or a mixture of the two can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A cleaning machine, comprising An inner container (1) having a washing chamber (11) therein, wherein a first side wall (14) of the inner container (1) is provided with an air inlet hole (12) in fluid communication with the washing chamber (11); A first shell (2) is located outside the inner container (1) and is mounted on a first side wall (14) of the inner container (1); an air flow channel (21) is provided inside the first shell (2); and a first air outlet (22) is provided on the first shell (2) to connect the air flow channel (21) and the air inlet (12) of the inner container (1); A first fan (4) having a first air inlet (41) and a first air outlet (42), wherein the first air inlet (41) of the first fan (4) is in fluid communication with the outside, and the first air outlet (42) of the first fan (4) is in fluid communication with the air flow channel (21) of the first housing (2); A heating element (24) is disposed in the air flow channel (21), and along the air flow direction, the heating element (24) is located upstream of the first air outlet (22); Features: The first shell (2) is also provided with a second air outlet (23) in fluid communication with the air flow channel (21); along the flow direction of the air flow, the second air outlet (23) is located downstream of the heating element (24); The second side wall (15) of the inner container (1) is provided with an exhaust hole (13) in fluid communication with the washing chamber (11); the outer portion of the inner container (1) is further provided with a second shell (3) mounted on the second side wall (15); the second shell (3) has an exhaust passage (31) inside, and the second shell (3) is provided with a breathing port (32) and an exhaust port (33) connected via the exhaust passage (31); along the airflow direction, the breathing port (32) is located upstream of the exhaust port (33), and the breathing port (32) is in fluid communication with the exhaust hole (13) on the inner container (1); The inner container (1) is covered with an outer shell (6), and a distance is provided between the inner wall surface of the outer shell (6) and the outer wall surface of the inner container (1), so that a sandwich (61) is formed between the outer shell (6) and the inner container (1), and the first shell (2) and the second shell (3) are both located in the sandwich (61); The second shell (3) is provided with an air inlet (34) in fluid communication with the second air outlet (23) of the first shell (2), and the second shell (3) is provided with an air outlet channel (35) in communication with the air inlet (34) and the exhaust channel (31).

2. The cleaning machine according to claim 1, characterized in that: The second shell (3) is provided with guide plates (36) on both sides of the air inlet (34), respectively, and the two guide plates (36) enclose a guide channel (361) in fluid communication with the air inlet (34), and the guide channel (361) is in a conical shape with a diameter gradually decreasing along the flow direction of the airflow; or the air inlet (34) on the second shell (3) is in a conical shape with a diameter gradually decreasing along the flow direction of the airflow.

3. The cleaning machine according to claim 1, characterized in that: The air outlet channel (35) and the exhaust channel (31) intersect and are thus connected; a second fan (5) is provided in the exhaust channel (31); along the flow direction of the airflow, the second fan (5) is located downstream of the intersection of the air outlet channel (35) and the exhaust channel (31); the second fan (5) has a second air inlet and a second air outlet; the second air inlet of the second fan (5) is fluidically connected to the breathing port (32) and the air outlet channel (35); and the second air outlet of the second fan (5) is fluidically connected to the exhaust port (33) on the second housing (3).

4. The cleaning machine according to claim 1, characterized in that: The second shell (3) is provided with a plurality of air holes (37) at positions corresponding to the air outlet channel (35), and the plurality of air holes (37) are arranged at intervals along the extension direction of the air outlet channel (35).

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