Air inlet assembly for cleaning machine and cleaning machine

Abstract

The utility model relates to an air inlet assembly for a cleaning machine and the cleaning machine, the air inlet assembly comprises an air inlet pipe, the air inlet pipe is provided with an air inlet and an air outlet which are communicated with the interior of the air inlet pipe, and the air outlet is used for being communicated with a washing cavity of the cleaning machine; the impeller is arranged in the air outlet, the impeller can move to a fixed position or a rotating position along the center line of the air outlet, and when the impeller is in the fixed position, the impeller is fixed relative to the air inlet pipe; when the impeller is in the rotating position, the impeller can rotate around the center line of the air outlet. The air inlet coverage area can be adjusted according to changes of air volumes in different drying stages, and energy conservation and high efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the cleaning machine that can clean tableware and / or fruits and vegetables, and particularly relates to an air inlet assembly for a cleaning machine and the cleaning machine. BACKGROUND

[0002] The cleaning machine, such as a dishwasher, has been increasingly applied in kitchens. After tableware is cleaned, there is a large amount of water vapor in the washing cavity of the dishwasher. In order to dry the tableware and prevent the breeding of bacteria, a drying assembly for heating the airflow in the washing cavity is arranged on the outer side wall of the box body. Hot airflow is input into the washing cavity through the drying assembly to dry the tableware.

[0003] For example, a Chinese utility model patent with the patent number CN202320953636.2 (publication number CN220344366U) discloses a cleaning machine. The drying assembly includes an air inlet pipeline, a heating element, and a second airflow driving member. The air inlet pipeline has a second air inlet and a second air outlet. The second air inlet is in fluid communication with the outside world, and the second air outlet is in fluid communication with a second air inlet hole on the box body. In the flow direction of the airflow, the second air outlet is located downstream of the second air inlet. The second airflow driving member is installed on the air inlet pipeline. The second airflow driving member is used to drive the airflow from the outside world to the second air outlet through the air inlet pipeline. In this embodiment, the second airflow driving member is a second fan. The air outlet hole of the second fan faces the second air inlet of the air inlet pipeline. The air inlet hole of the second fan is in fluid communication with the outside world.

[0004] At present, the air inlet pipeline is basically fixedly installed on the box body through a nut. The position and area of the air inlet are fixed and cannot be changed. As a result, the air inlet area of the airflow entering from the air inlet is small. In addition, due to the shielding of the tableware, part of the hot air is blocked back, which causes turbulence and also causes the speed of the hot air entering the washing cavity to decrease rapidly. The hot air can only slowly cover the tableware through the pressure gradient, and the drying efficiency is low.

[0005] In addition, during the drying stage, the evaporation rate of water vapor has a complex relationship with temperature and wind speed. However, the patent cannot adaptively adjust the wind speed of the fan according to the temperature in the washing cavity. UTILITY MODEL CONTENTS

[0006] The first technical problem to be solved by the utility model is to provide an air inlet assembly for a cleaning machine that can adjust the airflow coverage area in view of the current status of the prior art.

[0007] The second technical problem to be solved by the utility model is to provide a cleaning machine applying the above air inlet assembly in view of the current status of the prior art.

[0008] The technical scheme adopted by the utility model to solve the above first technical problem is as follows: an air inlet assembly for a cleaning machine, comprising

[0009] an air inlet and an air outlet, the air outlet being used to communicate with the washing cavity of the washing machine;

[0010] a fan, used to drive the air flow from the air inlet to the air outlet;

[0011] characterized in that it further comprises

[0012] a vane wheel, arranged in the air outlet, the vane wheel being movable along the center line of the air outlet to a fixed position or a rotating position, in the state that the vane wheel is in the fixed position, the vane wheel is fixed relative to the air inlet pipe, in the state that the vane wheel is in the rotating position, the vane wheel is rotatable about the center line of the air outlet.

[0013] In order to make the vane wheel be in the fixed position and the rotating position, the central part of the air outlet is provided with a mounting seat, the vane wheel comprises a mounting shaft and blades connected with the mounting shaft, the mounting shaft extends along the center line of the air outlet, the mounting shaft is insertedly fitted with the mounting seat, and the mounting shaft is movable along the center line of the air outlet relative to the mounting seat, in the state that the vane wheel is in the fixed position, the contact area between the mounting shaft and the mounting seat is S1, in the state that the vane wheel is in the rotating position, the contact area between the mounting shaft and the mounting seat is S2, S1>S2. If the contact area between the mounting shaft and the mounting seat is large, the rotating friction between them is large, the vane wheel is not easy to rotate, on the contrary, if the contact area between them is small, the contact area between them is small, the vane wheel is easy to rotate.

[0014] In order to make the mounting shaft rotate smoothly relative to the mounting seat, a bearing is arranged between the mounting seat and the mounting shaft, and the mounting shaft is movable along the center line of the bearing.

[0015] In order to adjust the contact area between the mounting seat and the mounting shaft, a convex part is arranged on the outer peripheral wall of the mounting shaft, in the state that the convex part is completely in contact with the mounting seat, the vane wheel is in the fixed position, in the state that the convex part is partially in contact with the mounting seat, or the convex part is out of contact with the mounting seat, the vane wheel is in the rotating position. By changing the contact area between the convex part and the mounting seat, the rotating friction between the mounting seat and the mounting shaft is adjusted.

[0016] The impeller can be manually controlled to be in the fixed position or the rotating position according to the size of the air volume, but it is troublesome, in order to make the impeller switch between the fixed position and the rotating position according to the size of the air volume, the elastic member acting on the impeller is arranged in the air inlet pipe, the elastic member makes the impeller keep the tendency of moving to the fixed position, the windward piece is arranged on the impeller and faces the air flow direction, the windward piece faces the air flow direction so that the impeller moves to the rotating position when the air flow impact force is greater than the elastic force of the elastic member. When the air flow flows, the windward piece is impacted, if the air flow acting force on the windward piece is greater than the elastic force of the elastic member, the impeller moves to the rotating position, if the air flow acting force on the windward piece is less than the elastic force of the elastic member, the impeller moves to the fixed position. In other words, the position of the impeller is adjusted by the size of the air volume, when the air volume is large, the impeller is in the rotating position and rotates at a high speed, when the air volume is general, the impeller is in the rotating position and rotates at a low speed, when the air volume is small, the impeller is in the fixed position.

[0017] In the above scheme, the elastic member is a spring, one end of which is fixed with the air inlet pipe, and the other end is fixed with the mounting shaft.

[0018] In order to increase the coverage area of the air flow, the blades are annular and surround the outer periphery of the mounting shaft, and the blades are conical and gradually expand in the air flow out direction. The conical structure of the blades can guide the air flow, the air flow gradually diffuses in the process of flowing out along the blades, and if the impeller rotates, the coverage area of the air flow is larger.

[0019] In order to further increase the coverage area of the air flow, the blades are at least two and are sequentially arranged along the radial direction, and a plurality of connecting ribs are arranged on the outer peripheral wall of the mounting shaft along the circumferential direction, and the connecting ribs sequentially pass through the intermediate blades and are connected with the outermost blades. Each blade can guide the air flow, and when the impeller rotates, each blade can centrifugally act on the air flow, thereby increasing the coverage area of the air flow.

[0020] In the above scheme, at least one of the blades is provided with a windward piece, and the windward pieces on the same blade are at least two and are sequentially and uniformly distributed along the circumferential direction, and the windward pieces face the air flow direction so that the impeller moves to the rotating position when the air flow impact force is greater than the elastic force of the elastic member. There are a plurality of windward pieces, which not only increase the windward area, but also sequentially arrange the windward pieces along the circumferential direction, so that the blades are uniformly stressed and the impeller is prevented from being skewed.

[0021] The technical scheme adopted by the utility model for solving the above-mentioned second technical problem is: a cleaning machine, characterized by comprising a box body and the above-mentioned air inlet assembly, the air inlet pipe is arranged on the outer wall surface of the box body, the side wall of the box body is provided with an air inlet hole, and the air outlet and the air inlet hole are correspondingly connected.

[0022] Compared with the prior art, the utility model discloses the advantages that: the utility model discloses the impeller in the air outlet, and the impeller has two states of fixing relative to the air inlet pipe and rotating relative to the air inlet pipe, because in the cleaning machine drying stage, the evaporation rate and temperature, wind speed have the complex relationship of mutual influence. When temperature is higher, wind speed is faster, and the drying evaporation speed is fast, but the temperature drops faster with the faster wind speed. Therefore, it is necessary to adjust the air volume in the drying stage, when the air volume is large, the maximum coverage area is beneficial to improving the evaporation uniformity of the cavity, at this moment, the impeller can rotate, and the airflow is diffused to all directions under the driving of the impeller, but also need to have the heat preservation stage, so the temperature cannot continuously and rapidly drop, at this moment, low air volume is needed, so the impeller is in the fixed state at this moment, and the airflow inlet direction is fixed, and the temperature is utilized to dry.

[0023] From the above, the utility model can adjust the air inlet coverage area according to the temperature and the change of air volume in different drying stages, and achieve energy saving and high efficiency. DRAWINGS

[0024] Figure 1 It is the structure schematic view of the air inlet component of the utility model embodiment;

[0025] Figure 2 It is Figure 1 the enlarged view of A of;

[0026] Figure 3 It is Figure 1 the sectional view of;

[0027] Figure 4 It is Figure 3 the enlarged view of B of;

[0028] Figure 5 It is Figure 4 the exploded schematic view of of the air inlet pipe;

[0029] Figure 6 It is the structure schematic view of the impeller in Figure 5 . DETAILED DESCRIPTION

[0030] The utility model is further described in detail in connection with the drawings embodiment.

[0031] As Figures 1 to 6 shown, the cleaning machine of the preferred embodiment includes a box body (not shown in the drawing) and an air inlet component, and the air inlet component includes an air inlet pipe 1, a fan 2 and an impeller 3. The box body can adopt the structure form that the top is open or the front side is open of the existing dishwasher.

[0032] The air inlet pipe 1 is provided with the air inlet 11 and the air outlet 12 that are connected with its inside, and the air inlet pipe 1 is arranged on the outer wall surface of the box body, the sidewall of the box body is provided with the air inlet hole, and the air outlet 12 and the air inlet hole are correspondingly connected.

[0033] The fan 2 is used to drive the air flow from the air inlet 11 to the air outlet 12, and the fan 2 has a conventional structure. The air inlet of the fan 2 is connected with the outside, and the air outlet of the fan 2 is connected with the air inlet 11.

[0034] The impeller 3 is arranged in the air outlet 12, and the impeller 3 can be moved to a fixed position or a rotating position along the center line of the air outlet 12. When the impeller 3 is in the fixed position, the impeller 3 is fixed relative to the air inlet pipe 1. When the impeller 3 is in the rotating position, the impeller 3 can rotate around the center line of the air outlet 12.

[0035] As shown in Figure 4 The air outlet 12 is threadedly connected with an air outlet sleeve 4, and the air outlet sleeve 4 is provided with a mounting seat 41 connected with the air outlet sleeve 4 through a connecting strip 42. The mounting seat 41 is also arranged at the central part of the air outlet 12.

[0036] The impeller 3 comprises a mounting shaft 31 and blades 32 connected with the mounting shaft 31. In this embodiment, the blades 32 are annular and surround the outer periphery of the mounting shaft 31, and the blades 32 are conical and gradually expand in the direction of the air flow. The conical structure of the blades 32 can guide the air flow, and the air flow gradually spreads during the process of flowing out of the blades 32. If the impeller 3 rotates, the coverage area of the air flow is larger.

[0037] The blades 32 are at least two and arranged in sequence along the radial direction of the blades 32. In this embodiment, the blades 32 are two, and the outer peripheral wall of the mounting shaft 31 is provided with a plurality of connecting ribs 35 along the circumferential direction. The connecting ribs 35 are connected with the innermost blades 32 in sequence through the intermediate blades 32. Each blade 32 can guide the air flow, and each blade 32 can centrifugally act on the air flow when the impeller 3 rotates, so as to increase the coverage area of the air flow. In addition, the connecting ribs 35 can also spread the air flow when the impeller 3 rotates.

[0038] The mounting shaft 31 extends along the center line of the air outlet 12, and the mounting shaft 31 is insertedly connected with the mounting seat 41. A bearing 5 is arranged between the mounting seat 41 and the mounting shaft 31, and the mounting shaft 31 can move relative to the center line of the bearing 5, that is, the mounting shaft 31 can move along the center line of the air outlet 12 relative to the mounting seat 41.

[0039] The contact area between the mounting shaft 31 and the mounting seat 41 is S1 when the impeller 3 is in the fixed position, and the contact area between the mounting shaft 31 and the mounting seat 41 is S2 when the impeller 3 is in the rotating position, S1>S2. In the embodiment, the outer peripheral wall of the mounting shaft 31 is provided with a protrusion 33, the impeller 3 is in the fixed position when the protrusion 33 is in full contact with the mounting seat 41, the contact area between the mounting shaft 31 and the mounting seat 41 is S1, the impeller 3 is in the rotating position when the protrusion 33 is in partial contact with the mounting seat 41 or the protrusion 33 is out of contact with the mounting seat 41, and the contact area between the mounting shaft 31 and the mounting seat 41 is S2.

[0040] If the contact area between the mounting shaft 31 and the mounting seat 41 is large, the rotating friction between them is large, and the impeller 3 is not easy to rotate, and vice versa, if the contact area between them is small, the contact area between them is small, and the impeller 3 is easy to rotate. By changing the contact area between the protrusion 33 and the mounting seat 41, the rotating friction between the mounting seat 41 and the mounting shaft 31 is adjusted.

[0041] As can be seen from the above, when the protrusion 33 is in full contact with the mounting seat 41, the impeller 3 cannot rotate because the rotating friction received by the mounting shaft 31 is greater than the driving force received by the impeller 3; when the protrusion 33 is in partial contact with the mounting seat 41, the impeller 3 can rotate because the rotating friction received by the mounting shaft 31 is less than the driving force received by the impeller 3, but the rotating speed of the impeller 3 is relatively slow because of the existence of the rotating friction of the protrusion 33; when the protrusion 33 is out of contact with the mounting seat 41, the mounting shaft 31 is no longer affected by the rotating friction, and the rotating speed of the mounting shaft 31 is the fastest under the action of the driving force.

[0042] In the embodiment, the rotating position is located downstream of the fixed position along the flow direction of the airflow, and the inlet pipe 1 is provided with an elastic member 6 acting on the impeller 3, which makes the impeller 3 have a tendency to move towards the fixed position, and the elastic member 6 is a spring, one end of which is fixed to the inlet pipe 1 and the other end of which is fixed to the mounting shaft 31.

[0043] The impeller 3 is provided with a windward blade 34 facing the airflow direction so that the impeller 3 moves towards the rotating position when the airflow impact force is greater than the elastic force of the elastic member 6. When the airflow flows, it will impact the windward blade 34, if the force acting on the windward blade 34 by the airflow is greater than the elastic force of the elastic member 6, the impeller 3 moves towards the rotating position, if the force acting on the windward blade 34 by the airflow is less than the elastic force of the elastic member 6, the impeller 3 moves towards the fixed position. In other words, the position of the impeller 3 is adjusted by the size of the airflow in the embodiment, when the airflow is large, the impeller 3 is in the rotating position and rotates at a relatively high speed, when the airflow is general, the impeller 3 is in the rotating position but rotates at a relatively slow speed, and when the airflow is small, the impeller 3 is in the fixed position.

[0044] At least one of the blades 32 is provided with a windward blade 34, and the windward blades 34 on the same blade 32 are at least two and are uniformly distributed along the circumferential direction of the windward blades 34. The windward blades 34 are multiple, which not only increases the windward area, but also makes the blade 32 bear force uniformly by sequentially arranging the windward blades 34 along the circumferential direction, thereby preventing the impeller 3 from being skewed.

[0045] The impeller 3 can rotate under the action of a driving mechanism such as a motor, and the output power of the motor is fixed.

[0046] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. Since the embodiments disclosed in the present application can be arranged in different directions, these directional terms are only used as illustrations and should not be regarded as limitations. For example, "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

Claims

1. An air inlet assembly for a washing machine, comprising an air inlet pipe (1) having an air inlet (11) and an air outlet (12) in communication with the interior of the air inlet pipe (1), the air outlet (12) being in communication with a washing chamber of the washing machine; a fan (2) for driving air flow from the air inlet (11) to the air outlet (12); characterized in that further comprising a vane (3) arranged in the air outlet (12), the vane (3) being movable along a center line of the air outlet (12) to a fixed position or a rotating position, in the fixed position, the vane (3) is fixed relative to the air inlet pipe (1), in the rotating position, the vane (3) is rotatable about the center line of the air outlet (12).

2. The air intake assembly of claim 1, wherein: a mounting seat (41) is arranged at a central part of the air outlet (12), the vane (3) comprises a mounting shaft (31) extending along the center line of the air outlet (12) and blades (32) connected to the mounting shaft (31), the mounting shaft (31) is insertedly fitted with the mounting seat (41), and the mounting shaft (31) is movable along the center line of the air outlet (12) relative to the mounting seat (41), in the fixed position, a contact area between the mounting shaft (31) and the mounting seat (41) is S1, in the rotating position, a contact area between the mounting shaft (31) and the mounting seat (41) is S2, S1>S2.

3. The air intake assembly of claim 2, wherein: a bearing (5) is rotatably arranged between the mounting seat (41) and the mounting shaft (31), and the mounting shaft (31) is movable relative to a center line of the bearing (5).

4. The air intake assembly of claim 2, wherein: a convex part (33) is arranged on an outer peripheral wall of the mounting shaft (31), in the fixed position, the convex part (33) is in full contact with the mounting seat (41), in the rotating position, the convex part (33) is partially in contact with the mounting seat (41) or is out of contact with the mounting seat (41).

5. The air intake assembly of claim 2, wherein: an elastic member (6) is arranged in the air inlet pipe (1) and acts on the vane (3), the elastic member (6) makes the vane (3) have a tendency to move towards the fixed position, a windward blade (34) is arranged on the vane (3) and faces the air flow direction, so that the vane (3) moves towards the rotating position when the air flow impact force is greater than the elastic force of the elastic member (6).

6. The air intake assembly of claim 5, wherein: the elastic member (6) is a spring, one end of which is fixed to the air inlet pipe (1) and the other end of which is fixed to the mounting shaft (31).

7. The air intake assembly of any of claims 2-4, wherein: the blades (32) are annular and surround the outer periphery of the mounting shaft (31), and the blades (32) are conical and gradually expand in diameter along the air flow direction.

8. The air intake assembly of claim 7, wherein: there are at least two blades (32) arranged in sequence along the radial direction, and a plurality of connecting ribs (35) are arranged on the outer peripheral wall of the mounting shaft (31) along the circumferential direction, the connecting ribs (35) are connected to the innermost blade (32) and the outermost blade (32) in sequence.

9. The air intake assembly of claim 8, wherein: The elastic member (6) in the air inlet pipe (1) acts on the impeller (3), the elastic member (6) makes the impeller (3) keep the tendency of moving to the fixed position, at least one of the blades (32) is provided with a windward piece (34), the windward piece (34) on the same blade (32) has at least two which are uniformly distributed along the circumferential direction, the windward piece (34) faces the airflow direction so that the impeller (3) moves to the rotating position under the condition that the airflow impact force is greater than the elastic force of the elastic member (6).

10. A cleaning machine characterized by, The air inlet pipe (1) is arranged on the outer wall surface of the box body, the side wall of the box body is provided with an air inlet hole, and the air outlet (12) and the air inlet hole are correspondingly communicated.

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