CN111728564A - Air duct structure of a dishwasher - Google Patents

Abstract

The invention discloses an air duct structure of a dish washing machine, which comprises an air duct communicated with an accommodating chamber of the dish washing machine; a fan unit, an adjusting assembly, a flow guide structure and a backflow prevention structure are arranged in the air duct; the adjusting assembly is used for realizing the communication or disconnection between the air duct and the accommodating chamber; the flow guide structure guides the airflow flowing through the air channel and flowing in a disordered way into uniform airflow; the backflow prevention structure prevents water or steam in the accommodating chamber from flowing back into the air return duct. The invention provides an air duct structure of a dish washing machine, which realizes that air flow quickly enters an accommodating chamber through an air duct by arranging the air duct with the changed airflow basin; meanwhile, a flow guide structure and a backflow prevention structure are arranged in the air duct, so that flow guide and backflow prevention are realized; and the air outlet of the air exhaust channel of the accommodating cavity is set to be adjustable in size, so that the area of the air outlet is reduced to the minimum in the cleaning stage of the dish-washing machine, the loss of heat is reduced, the temperature is kept, and meanwhile, cleaned water is prevented from entering the air channel.

Description

Air duct structure of a dishwasher

technical field

The invention belongs to the technical field of household appliances, in particular to an air duct structure of a dishwasher.

Background technique

With the improvement of living standards, people have higher and higher requirements for the quality of life, and thus have higher and higher requirements for product quality, performance, user-friendly use, and intelligent operation. As an excellent product, dishwashers have gradually entered people's lives. Dishwashers are equipment that automatically cleans tableware such as bowls, chopsticks, plates, dishes, knives, forks, etc., which greatly facilitates people's lives. Dishwashers usually need to dry the tableware after washing the tableware. Some of the existing dishwashers are not connected to the external drying system, relying on the heat of the tableware to evaporate the water droplets on the tableware to achieve drying of the tableware, but the drying process The drying effect is poor; other dishwashers rely on an external drying system, which accelerates the drying of dishes by accelerating the flow of air in the dishwasher to take away water vapor. However, the external drying system relies on the centrifugal fan to pour dry air into the dishwasher or extract the water vapor from the dishwasher (which will corrode the air machine for a long time) to realize the flow of air in the dishwasher. However, the flow direction and watershed of the airflow entering the dishwasher are unstable, and the amount of air driven by the centrifugal fan usually used is limited. To increase the amount of air, the speed of the fan must be increased, but the noise will be very large, which will seriously affect the user's health. experience.

The Chinese patent application number CN201720747062.8 discloses an air exhaust system and a dishwasher including the same. The air exhaust system includes a fan assembly, an air duct and an air outlet structure, an outlet of the fan assembly is connected to an air inlet connection part of the air duct, the air outlet structure is slidably connected to the air duct, and , the air outlet structure may at least partially communicate with the air outlet of the air duct.

The Chinese patent with application number CN201620180046.0 discloses a condensing exhaust pipe of a dishwasher, a condensation drying device of the dishwasher and a dishwasher, wherein the condensing exhaust pipe of the dishwasher is used to be arranged in the dishwasher Between the inner door and the outer door, it includes a pipeline body, the pipeline body has a condensation inner cavity, a condensation inlet set at the top of the condensation cavity, and a condensation outlet set at the bottom of the condensation cavity, and the inner wall of the condensation cavity includes several vertical A vertical wall surface extending straight downward and a plurality of inclined wall surfaces extending obliquely downward, each vertical wall surface and each inclined wall surface are alternately arranged along the vertical direction.

Although the above-mentioned prior art discloses a technical solution for exhausting air from a dishwasher, there is still a drying fan with low air volume and high noise; the air flow generated by the fan is transported to the accommodating chamber with serious loss and transmission. The problem of low efficiency; the water or steam in the dishwasher liner flows back along the air duct, causing the fan to corrode or mold.

Therefore, it is necessary to improve the deficiencies and defects of the prior art, and to provide an air duct structure for a dishwasher. It is realized that the airflow enters the accommodation chamber through the air duct quickly, and the loss of air volume is small. At the same time, after passing through the air duct structure, the turbulent airflow becomes a uniform airflow, and the uniform airflow passes through the air duct outlet and faces different grilles. , evenly dispersed into the accommodating chamber, and a structure to prevent the backflow of water or steam in the accommodating chamber along the air duct is arranged in the air duct, which ensures the service life of the whole device and prevents the occurrence of mildew; The air outlet is set to be adjustable in size. During the washing stage of the dishwasher, the area of the air outlet is reduced to a minimum, which reduces the loss of heat, maintains the temperature, and prevents the cleaning water from entering the air duct.

The present invention has been made in view of this.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, and to provide a dishwasher air duct structure that can overcome the above problems or at least partially solve the above problems.

In order to solve the above-mentioned technical problems, the basic idea of the technical solution adopted in the present invention is: an air duct structure of a dishwasher, comprising:

an air duct communicating with the receiving chamber of the dishwasher;

A fan unit, an adjustment component, a diversion structure and an anti-backflow structure are arranged in the air duct;

the adjustment assembly for realizing the connection or disconnection of the air duct and the accommodating chamber;

The guide structure guides the turbulent airflow flowing through the air duct into a uniform airflow;

The anti-backflow structure prevents the water or steam in the accommodating chamber from flowing back into the air duct.

Wherein, the air duct includes

an air inlet channel, an air induction channel and an air outlet channel which are communicated with the accommodating chamber and are connected in sequence;

communicating with the accommodating chamber, and used for discharging the gas in the accommodating chamber to an exhaust passage of the dishwasher;

The air inlet channel is provided with a fan unit;

The air induction channel is at least partially fitted with the outer wall of the accommodating chamber;

The air outlet channel is at least partially attached to the top wall of the accommodating chamber, and at least communicates with the accommodating chamber;

The air exhaust channel is provided with the adjustment component, which is used to realize the connection or disconnection of the air exhaust channel and the accommodating chamber;

In one embodiment, an arc-shaped transition structure is provided at the connection between the air inlet channel and the air induction channel, and the air induction channel and the air outlet channel;

The arc-shaped transition structure forms a tendency for the airflow generated by the fan unit to be introduced from the air inlet channel into the air induction channel and the air outlet channel. The arc-shaped transition structure is set up at the change of the arc-shaped transition structure, so that the flow direction can be converted under the guidance of the arc-shaped transition structure, avoiding the rigid contact between the air flow direction and the inner wall of the air duct, and the loss of air volume while passing quickly. been greatly reduced;

In one embodiment, the air channel formed by the air induction channel on the outer wall of the accommodating chamber has a linear structure that facilitates the passage of air flow. The air duct with too many corners causes the loss of air volume;

In one embodiment, the cross-sectional area of the airflow flow domain in the air induction channel is smaller than the cross-sectional area of the airflow flow domain in the air inlet channel, and the difference in the area of the airflow flow domain of the two air channels is beneficial to the airflow during the flow process. Acceleration, when the air flow enters the air duct of the small area from the air duct of the large area, the higher transmission speed is obtained, and the air duct of the small area of loss.

In one embodiment, the conditioning assembly includes a first conditioning unit and a second conditioning unit;

The first adjustment unit is arranged in the exhaust passage, and connects or disconnects the exhaust passage and the accommodating chamber;

The second adjustment unit is connected to the first adjustment unit, provides power for the first adjustment unit, and realizes the connection or disconnection between the exhaust passage and the accommodating chamber, and the exhaust passage can be arranged to adjust the exhaust The adjustment mechanism of the size of the mouth can realize the adjustable size of the air outlet area, which can not only ensure the temperature of the dishwasher during washing, save energy, but also reduce the risk of water being discharged from the exhaust duct during washing; , to realize the opening of the tuyere, to speed up the discharge of the wind, to dry quickly, and to avoid the loss of heat from the accommodating chamber;

In one embodiment, the fan unit is a cross-flow fan arranged in the air inlet channel. By setting the cross-flow fan in the air inlet channel, a large amount of dry air is provided, and the noise of the cross-flow fan is low during operation. , reducing the impact on the surrounding environment of the dishwasher, providing users with a more comfortable environment.

In one embodiment, a slideway is provided in the exhaust channel;

The first adjusting unit is arranged in the slideway, and moves in a straight line under the action of the second adjusting unit, thereby realizing the connection or disconnection of the exhaust passage and the accommodating chamber;

In one embodiment, the area of the first adjusting unit shielding the exhaust passage is S1;

The area of the exhaust passage is S2;

The ratio of S1 to S2 is 0<S1/S2≦1.

In one embodiment, the first adjustment unit and the second adjustment unit are connected by a rotating shaft;

Under the action of the second adjustment unit, the first adjustment unit is in a rotational motion in the exhaust passage, thereby realizing the connection or disconnection between the exhaust passage and the accommodating chamber;

In one embodiment, the rotation shaft is arranged at a position of the first adjusting unit close to one end face or at the rotation center;

In one embodiment, the area of the first adjusting unit shielding the exhaust passage is S1;

The area of the exhaust passage is S2;

The ratio of S1 to S2 is 0<S1/S2≦1.

In addition, the air outlet channel includes an air inlet and an air outlet;

the air inlet is communicated with the air induction channel;

the air outlet communicates with the accommodating chamber;

In one embodiment, from the air inlet to the side of the air outlet, the air flow area formed by the air outlet channel gradually increases, and the continuous increase of the area from the air inlet to the air outlet is beneficial to the airflow. Slow down, which is convenient for the guide plate and the air outlet channel to guide the air flowing through it, so that the turbulent air flow in the watershed becomes a stable and uniform air flow in the watershed;

In one embodiment, the bottom wall of the air outlet channel includes a first bottom surface and a second bottom surface;

The air inlet is provided on the first bottom surface;

The air outlet is provided on the second bottom surface;

In one embodiment, a height difference is formed between the first bottom surface and the second bottom surface;

In one embodiment, when the air flow generated by the fan unit flows in the air outlet channel along the air inlet side to the air outlet side, between the first bottom surface and the second bottom surface The height difference forms the guide structure, and the height difference makes the air flowing through the air flow to form a downward flow trend, which enhances the flow trend of the air flow from the top of the accommodating chamber to the accommodating chamber;

When the water or steam in the accommodating chamber flows in the air outlet channel along the air outlet side to the air inlet side, the height difference between the first bottom surface and the second bottom surface is formed In the anti-backflow structure, the height difference changes the flow trajectory of the water or steam flowing back from the accommodating chamber, reducing the fluidity of the water or the steam;

In one embodiment, the distance from the first bottom surface to the top wall of the air outlet channel is smaller than the distance from the second bottom surface to the top wall of the air outlet channel, and the height difference causes the airflow passing through to flow downward. , which enhances the tendency of the airflow to flow from the top of the containing chamber to the interior of the containing chamber;

In one embodiment, the side wall of the air outlet channel is arranged in an arc shape, and cooperates with the guide plate to form a structure for adjusting the airflow passing through;

In one embodiment, the arc-shaped side wall of the air outlet channel is at least partially in a C-shaped structure. By setting the air channel shape at the top of the accommodating chamber to an approximately "C"-shaped arc structure, the dishwasher can be avoided. During the working process, water or steam flows back from the air duct, causing damage or corrosion of the cross-flow fan.

Further, the flow guide structure includes a plurality of guide plates arranged at intervals on the bottom wall of the air outlet channel, and the guide plates guide the turbulent air flow in the flow region to flow into a stable and uniform air flow in the flow region;

The guide plate guides the air flowing through the air outlet channel from the air inlet to the air outlet;

In one embodiment, the guide plate is arranged in an arc;

forming a trend of airflow from the air inlet to the air outlet;

In one embodiment, the curvature of the guide plate is the same as the curvature of the side wall of the air outlet channel, and the guide plate with the same curvature as the side wall of the air channel enhances the guiding effect on the airflow flowing in the air channel, so that the airflow passes through the guide plate, From turbulent airflow to uniform airflow;

In one embodiment, the guide plate is disposed at least partially on the first bottom surface.

Meanwhile, a grille is provided at the air outlet of the air outlet passage;

Several grids are arranged on the grid at intervals;

In one embodiment, the grid can be rotated around an axis, thereby adjusting the air outlet angle of the grid, and the adjustment of different angles can meet the needs of customers for washing at different angles. Facing the adjustable grille, further, during the adjustment process of the grille, at least two different directions will be oriented, which ensures the uniform effect of the airflow during the process of entering the accommodating chamber through the air duct;

In one embodiment, at least two of the grids are rotated at different angles and directions about the axis;

When the air flow generated by the fan unit flows in the air outlet channel along the air inlet side to the air outlet side, the air flow in the air outlet channel is different in at least two angles and directions Under the guidance of the grille, it enters the accommodation chamber at different angles and directions, and the adjustment of different angles meets the needs of customers for washing at different angles. At the air outlet of the air duct, a grille with an adjustable orientation is arranged. , and further, during the adjustment process of the grille, at least two different directions will be oriented, which ensures the uniform flow effect of the airflow during the process of entering the accommodating chamber through the air duct;

When the water or steam in the accommodating chamber flows in the air outlet channel along the side of the air outlet to the side of the air inlet, the water or steam in the accommodating chamber varies in angle and direction Under the action of the grille, it is at least partially blocked from the air outlet channel, and a grille with an adjustable orientation is arranged at the air outlet of the air duct. Further, during the adjustment process, the grille will face at least two Different directions realize the initial shielding of the water or steam in the accommodating chamber entering the air duct, reducing the probability of water or steam backflowing along the air duct;

In one embodiment, the grille and the air outlet are detachably connected;

In one embodiment, the perimeter of the grille is provided with jaws;

The air outlet is provided with a clamping slot corresponding to the clamping claw;

The clamping claw cooperates with the clamping groove to realize the disassembly of the grille and the air outlet, which is convenient for users to clean and maintain the grille.

Moreover, the anti-backflow structure includes a switch portion disposed in the air outlet channel and capable of opening or closing the air outlet channel;

In one embodiment, the switch part opens or closes the air outlet channel at least along the direction in which the air flows in the air outlet channel;

In one embodiment, the switch part is connected with a driving device;

After the driving device receives the signal of opening or closing, it drives the switch part to realize the opening or closing of the air outlet channel;

In one embodiment, at least the outer edge of the switch portion is wrapped with an elastic sealing structure, and the sealing structure ensures the sealing effect of the air outlet channel when the switch portion is closed;

When the switch part is closed, the sealing structure cooperates with the inner wall of the air outlet channel, and the switch part seals the air outlet channel.

Moreover, the anti-backflow structure includes a water retaining rib disposed on the first bottom surface;

The water retaining ribs are arranged perpendicular to the flow direction of the air flow in the air outlet channel, and the water retaining ribs further block the water or steam flowing in the air outlet channel.

In addition, the anti-backflow structure further includes a water storage tank arranged at the bottom of the air introduction channel, and the water storage tank makes the residual water in the air channel hit and stored in one place;

In one embodiment, the inner wall of the air introduction channel is formed with a structure for guiding the water or steam returned from the air outlet channel to the water storage tank, so that the residual steam can be drained after the inner wall of the air channel is liquefied. into the cistern;

In one embodiment, a drain port is provided at the lowest end of the water storage tank to avoid corrosion and deterioration caused by washing water remaining in the air duct for a long time after the water or steam in the accommodating chamber flows back along the air duct;

In one embodiment, the water outlet is opened and closed by a plug body that is drawn or rotated;

In one embodiment, the drawing or rotation of the plug body is achieved manually or electrically.

After adopting the above-mentioned technical scheme, the present invention has the following beneficial effects compared with the prior art:

1. In the present invention, by setting an air duct structure that fits the dishwasher accommodating chamber and changes the area of the airflow area in the air duct, the airflow can quickly enter the accommodating chamber through the air duct, and the loss of air volume is small;

2. By setting the diversion structure in the air duct, the turbulent airflow flowing through the air duct is diverted, and the air flow area after the diversion is stable and uniform. Disperse evenly into the accommodating chamber; at the same time, an anti-backflow structure is set in the air duct to avoid the backflow of water or steam in the accommodating chamber along the air duct, causing damage to the fan unit, or the residue and the air duct causing corrosion and mildew.

3. At the change of the area of the air duct, a transition structure is set, so that the air flowing through can be guided by the arc-shaped transition structure, and the flow direction can be converted, avoiding the rigid contact between the air flow direction and the inner wall of the air duct, and at the same time passing quickly. , the loss of air volume is greatly reduced;

4. Through the change of the airflow area of the air duct and the setting of two planes with different heights at the air outlet, a multiple superposition of the effect of accelerating the airflow passing through is formed, which ensures that the airflow is quickly and uniformly diverted in the air duct and accelerated into the air duct. In the accommodating chamber, at the same time, the effect of multiple superposition of water or steam flowing through is formed to prevent backflow, which further avoids the backflow of water or steam in the accommodating chamber along the air duct, causing damage to the fan unit, or residues in the air duct causing corrosion and mildew. occurs;

5. A grille with an adjustable orientation is set at the air outlet of the air duct. Further, the grille will face at least two different directions during the adjustment process, which ensures that the air flow enters the accommodating chamber through the air duct. , the effect of uniform flow direction; at the same time, the initial shielding of the water or steam in the accommodating chamber from entering the air duct is realized, and the probability of water or steam backflowing along the air duct is reduced;

6. By setting the shape of the air duct at the top of the accommodating chamber to a similar "C"-shaped arc structure, it is avoided that water or steam flows back from the air duct during the working process of the dishwasher, causing damage or corrosion of the cross-flow fan;

7. By setting the cross-flow fan in the air inlet channel, a large amount of dry air is provided. At the same time, the cross-flow fan has low noise during operation, which reduces the impact on the surrounding environment of the dishwasher and provides a more comfortable environment for users;

8. An adjustment mechanism that can adjust the size of the air outlet is set in the air exhaust channel, so that the size of the air outlet can be adjusted, which can not only ensure the temperature of the dishwasher during washing, save energy, but also reduce the discharge of water from the exhaust duct during washing. Risks from the outside world; in the drying stage, the opening of the tuyere can be realized through the mechanism, the discharge of wind is accelerated, the drying is fast, and the dissipation of heat from the accommodation chamber is avoided;

9. The operating model of the adjustment mechanism and the shape of the exhaust channel are set, which enhances the adaptability of the adjustment mechanism, as well as the adaptability of different dishwasher models and different shapes of exhaust channels. The adjustment of the channel meets the needs of different gear exhaust and different drying conditions.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, as a part of the present invention, are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

In the attached image:

Fig. 1 is the first schematic diagram of the overall assembly of the air duct structure of the dishwasher of the present invention;

2 is a second schematic diagram of the overall assembly of the air duct structure of the dishwasher of the present invention;

Fig. 3 is the first schematic diagram of the air duct structure of the present invention;

Fig. 4 is the second schematic diagram of the air duct structure of the present invention;

Fig. 5 is the schematic diagram of the fan unit of the present invention;

Fig. 6 is the first schematic diagram of the air outlet channel of the present invention;

Fig. 7 is the second schematic diagram of the air outlet channel of the present invention;

Fig. 8 is the third schematic diagram of the air outlet channel of the present invention;

Fig. 9 is the fourth schematic diagram of the air outlet channel of the present invention;

Figure 10 is a schematic diagram of the exhaust channel of the present invention;

Fig. 11 is the first schematic diagram of the adjustment assembly channel of the present invention;

Fig. 12 is the second schematic diagram of the adjustment assembly channel of the present invention;

Figure 13 is a schematic diagram of the steam generating assembly of the present invention;

Fig. 14 is a schematic diagram of the use flow of the steam generating assembly of the present invention.

In the figure: 1, accommodating chamber; 2, air inlet channel; 201, fan unit; 202, heating unit; 3, air induction channel; 301, water storage tank; 4, air outlet channel; 401, air inlet; 402, outlet Air outlet; 403, the first bottom surface; 404, the second bottom surface; 405, the guide plate; 406, the grille; 407, the grille; 801, adjusting assembly; 802, first adjusting unit; 803, second adjusting unit; 804, rotating shaft; 9, steam generating assembly; 901, first connecting pipe; 902, second connecting pipe; 903, third connecting Tube; 904, power part; 905, heating part; 10, conversion part.

It should be noted that these drawings and written descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention , but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

There are problems in the daily use of dishwashers, such as the drying fan with small air volume and high noise; the air flow generated by the fan has serious loss and low transmission efficiency in the process of transporting it to the accommodation chamber 1; Water or steam flows back along the air duct, causing the fan to corrode or wait until moldy; at the same time, the residual cleaning of tableware and steam washing can only achieve the cleaning of tableware, but can only achieve partial sterilization, and cannot achieve large-scale sterilization; Large or long-term unwashed tableware cannot be effectively cleaned by high-pressure water, and steam washing usually sets a separate water inlet pipeline, which is cumbersome in structure and wastes resources. In view of the above technical problems, the present invention develops the following technical solutions.

1 and 2 are the first and second schematic diagrams of the overall assembly of the air duct structure of the dishwasher of the present invention, mainly showing the assembling positional relationship between the accommodating chamber 1 and the air duct of the present invention, from FIGS. 1 and 2 It can be seen that the air duct described in the present invention includes an air inlet channel 2, an air induction channel 3 and an air outlet channel 4. The air inlet channel 2 is externally provided with a fan unit 201, and the setting of the fan unit 201 and the air inlet channel 2 also includes In the conversion part 10, a heating unit 202 is installed in the conversion part 10. Of course, in the process of setting, according to actual needs, the heating unit 202 and the conversion part 10 can be omitted, which is only an embodiment of the present invention; further, The air inlet channel 2 is arranged at the bottom of the accommodating chamber 1, the air inlet channel 3 is in close contact with the side wall of the accommodating chamber 1, the air outlet channel 4 is in close contact with the top of the accommodating chamber 1, and the air outlet channel 4 is set as The approximately C-shaped arc structure, the airflow generated by the fan unit 201 enters the accommodating chamber 1 after passing through the air inlet channel 2 , the air induction channel 3 and the air outlet channel 4 .

3 to 5 are the first and second schematic diagrams of the air duct structure and the schematic diagram of the fan unit 201 of the present invention. It can be seen from FIGS. 3 to 5 that the air duct includes an air inlet channel 2, an air induction channel 3, and an air outlet channel. 4. At the same time, the fan unit 201 is connected with the conversion member 10 and the air inlet channel 2. The conversion member 10 is provided with a heating unit 202. When the conversion member 10 is connected with the air inlet channel 2, the sealant is injected to realize the complete integration of the two. It is sealed and fixed, and the connection between the swivel member and the fan unit 201 is realized by a detachable threaded structure; At the change, a transition structure 6 is set, so that the air flowing through can be guided by the arc-shaped transition structure 6, and the flow direction can be converted, which avoids the rigid contact between the air flow direction and the inner wall of the air duct. In addition, at the air introduction channel 3, a water storage tank 301 is also provided, and the inner wall of the air introduction channel 3 is formed with a structure to drain the water or steam returned from the air outlet channel 4 to the water storage tank 301, The structure of the inner wall of the air induction channel 3 can be understood as a structure inclined toward the water storage tank 301 , and the steam attached to the inner wall of the air induction channel 3 flows into the water storage tank 301 under the action of the inclined inner wall.

6 to 9 are the first, second, third and fourth schematic diagrams of the air outlet channel 4 according to the present invention. It can be seen from the accompanying drawings that the air outlet channel 4 is an arc-shaped structure that is approximately C-shaped, and is arranged in the air outlet channel 4 There is an air inlet 401 communicated with the air introduction channel 3, and an air outlet 402 communicated with the accommodating chamber 1. The air outlet channel 4 is also provided with a water retaining rib 409, a guide plate 405, and a first bottom surface 403 with a height difference. and the second bottom surface 404; wherein the guide plate 405 is also arc-shaped and has the same curvature as the arc-shaped side wall of the air outlet channel 4, which can guide the airflow in the air outlet channel 4 and avoid the accommodating chamber. The backflow of the water or steam in 1, the water or steam in the accommodating chamber 1 in the arc-shaped side wall of the air outlet channel 4 and the guide plate 405, the height difference between the first bottom surface 403 and the second bottom surface 404, and the water retaining ribs 409. Under the action, it is effectively blocked outside the drainage air duct to prevent water or steam from flowing to the fan unit 201 along the drainage air duct, causing damage to the fan unit 201; in addition, the air outlet 402 of the air outlet channel 4 is provided with A grid 406; a plurality of grids 407 are arranged at intervals on the grid 406; further, the grids 407 can rotate around an axis, and at least two of the grids 407 rotate at different angles and directions around the axis , and then adjust the air outlet angle of the grille 407; further, the grille 406 and the air outlet 402 are detachably connected, and the periphery of the grille 406 is provided with claws, and the air outlet 402 is provided with a slot corresponding to the claw; the claw cooperates with the slot to realize the disassembly of the grill 406 and the air outlet 402 , which is convenient for users to clean and maintain the grill 406 .

10 to 12 are the schematic diagrams of the exhaust passage 8 and the first and second schematic diagrams of the passage of the adjustment assembly 801 of the present invention. It can be seen from the figures that the present invention is provided with the exhaust passage 8 that can connect or disconnect the exhaust passage 8 The adjustment component 801 of the air outlet can adjust the size of the air outlet 402 by setting an adjustment mechanism in the air exhaust channel 8 to adjust the size of the air outlet 402, which can ensure the temperature of the dishwasher during washing, save energy, and reduce the washing time. The risk of water being discharged from the air exhaust duct to the outside world; in the drying stage, the opening of the tuyere can be realized through the mechanism, the air discharge can be accelerated, and the drying can be performed quickly; at the same time, the adjustment component 801 of the present invention adopts two technical solutions, which can move horizontally and Turn over and turn, and the shape of the exhaust channel 8 can be changed in various ways. Although it is only a rectangular exhaust channel 8 in FIG. 11 and FIG. 12, it can be adjusted according to the actual situation and needs. The purpose of setting the shape of the air channel 8 is to enhance the adaptability of the adjustment mechanism, as well as the adaptability of different dishwasher models and different shapes of the exhaust channel 8. At the same time, the adjustment of the exhaust channel 8 by the adjustment mechanism satisfies the Different gears for exhaust air and different drying conditions.

13 is a schematic diagram of the steam generating assembly 9 of the present invention. It can be seen from the figure that the accommodating chamber 1 is communicated with the steam generating assembly 9. By converting the water in the holding chamber 1 into high-temperature water vapor, the temperature of the chamber can be rapidly increased in a short time, effectively playing the role of Sterilize and remove stains on tableware.

Fig. 14 is a schematic diagram showing the use flow of the steam generating assembly 9 of the present invention. In the pre-washing process of step S2 described in Fig. 14, before performing the pre-washing operation, the dishwasher is firstly subjected to the steam washing operation. The steam used comes from the steam generator assembly 9 communicated with the accommodating chamber 1. In the pre-washing before washing in the dishwasher, the steam generator assembly communicated with the accommodating chamber 1 is used to produce high-temperature steam and send it to the dishwasher. It can be transported in the accommodating chamber 1 of the machine, which can quickly increase the temperature in the accommodating chamber 1. The humidity and high temperature of the water vapor can effectively soften the residues with high viscosity or high hardness, and then use high-pressure water to Easily remove stubborn stains on tableware.

Based on the above descriptions of FIGS. 1 to 14 , when the technical solutions of the present invention are applied to specific embodiments, the following is described.

Example 1

As shown in FIG. 1 and FIG. 2 , the air duct structure of a dishwasher described in this embodiment includes an air duct communicating with the accommodating chamber 1 of the dishwasher; a fan unit 201 and a heating unit are arranged in the air duct. 202. A guide structure and an anti-backflow structure; the heating unit 202 is used to heat the airflow generated by the fan unit 201 to form hot dry air flowing into the accommodation chamber 1 through the air inlet channel 2; so The diversion structure guides the turbulent airflow flowing through the air duct into a uniform airflow; the anti-backflow structure prevents the water or steam in the accommodating chamber 1 from flowing back into the air duct.

In the present invention, by setting an air duct structure that fits the dishwasher accommodating chamber 1 and the area of the airflow area in the air duct changes, the airflow quickly enters the accommodating chamber 1 through the air duct, and the loss of air volume is small; The diversion structure diverts the turbulent airflow flowing through the air duct, and the air flow area after the diversion is stable and uniform. In the room 1; by setting the anti-backflow structure in the air duct, it is avoided that the water or steam in the accommodation chamber 1 flows back along the air duct, causing damage to the fan unit 201, or the residue and the air duct causing corrosion and mildew.

Embodiment 2

As shown in Figure 3 to 5, this embodiment is a further limitation of the above -mentioned Examples. Among them, the air duct includes connecting the cavity chamber 1, and the inlet channel in turn 2, leading to the lead 2. Quoting, leading The air channel 3 and the air outlet channel 4; the air inlet channel 2 is provided with a fan unit 201 and a heating unit 202; The air passage 4 is at least partially attached to the top wall of the accommodating chamber 1, and at least communicates with the accommodating chamber 1; further, the heating unit 202 is arranged in the air inlet direction of the fan unit 201, In the area formed with the air inlet duct 2, by adding a heating unit 202 in the air duct, the airflow flowing through the air duct is heated, so that the internal environment of the washing machine can be quickly dried.

Embodiment 3

As shown in FIGS. 3 to 5 , this embodiment is a further limitation of the above-mentioned first or second embodiment. The fan unit 201 in this embodiment is a cross-flow fan disposed in the air inlet channel 2 . The air inlet channel 2 is equipped with a cross-flow fan, which provides a large amount of dry air. At the same time, the cross-flow fan has low noise during operation, which reduces the impact on the surrounding environment of the dishwasher and provides a more comfortable environment for users; further, all the The heating unit 202 is a PTC heater arranged in the air inlet duct 2. By adding a PTC heater in the air duct, the airflow flowing through the air duct is heated to achieve rapid drying of the internal environment of the washing machine. The installation position is set to increase the heating area of the PTC, which can also reduce the wind resistance and reduce the loss of air volume passing through the PTC.

Embodiment 4

As shown in FIG. 3 to FIG. 5 , this embodiment is a further limitation of any one of the above-mentioned embodiments 1 to 3. In this embodiment, the air inlet channel 2 , the air induction channel 3 , the The connection between the air channel 3 and the air outlet channel 4 is provided with an arc-shaped transition structure 6; The trend in the air induction channel 3 and the air outlet channel 4 is that at the exchange of the air duct, that is, the change of the area of the airflow area in the air duct, an arc-shaped transition structure 6 is arranged, so that the air flowing through can be in the arc-shaped transition structure. Under the guidance of the transition structure 6, the flow direction is converted, which avoids the rigid contact between the airflow direction and the inner wall of the air duct, and the loss of air volume is greatly reduced while passing quickly; The air duct formed on the upper part has a linear structure that facilitates the passage of air flow. The linear air duct structure is convenient for the rapid passage of air flow and avoids the loss of air volume caused by the air duct with too many arcs or corners; the air duct 3 The cross-sectional area of the air flow domain is smaller than the cross-sectional area of the air flow domain in the air inlet channel 2. The area difference between the two air ducts is conducive to the acceleration of the airflow during the flow process. When entering the air duct with a small area of the water area, a higher transmission speed is obtained, and it can quickly pass through the air duct of the small area of water area, thereby improving the transmission efficiency of the airflow in the air duct and avoiding the loss of air volume.

Embodiment 5

As shown in FIGS. 6 to 9 , this embodiment is a further limitation of the above-mentioned first to fourth embodiments. The air outlet channel 4 in this embodiment includes an air inlet 401 and an air outlet 402 ; the air inlet 401 and the The air inlet channel 3 is connected; the air outlet 402 is communicated with the accommodation chamber 1, and the air flow generated by the fan unit 201 passes through the air inlet channel 2 and the air induction channel 3, and enters the air outlet channel 4 from the air inlet 401. Under the action of the guiding structure such as the guide plate 405 in the air outlet channel 4 , the air flow from the turbulent direction to the uniform air flow is realized, and finally enters the accommodating chamber 1 from the air outlet 402 .

Embodiment 6

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of the fifth embodiment above. The air outlet channel 4 in this embodiment forms an airflow flow area from the air inlet 401 to the air outlet 402 side. Gradually increase, the area of the watershed from the air inlet 401 to the air outlet 402 continues to increase. When the airflow passes through this area, the rapid flow from the drainage channel becomes slow with the expansion of the watershed area, which is conducive to the deceleration of the air flow. It is convenient for the guide plate 405 and the air outlet channel 4 to guide the air flowing through it, so that the turbulent air flow in the flow area becomes a stable and uniform air flow in the flow area.

Embodiment 7

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of the fifth or sixth embodiment above. The bottom wall of the air outlet channel 4 in this embodiment is provided with a first bottom surface 403 and a second bottom surface 404 ; The first bottom surface 403 is provided with the air inlet 401; the second bottom surface 404 is provided with the air outlet 402; a height difference is formed between the first bottom surface 403 and the second bottom surface 404, The distance from the first bottom surface 403 to the top wall of the air outlet channel 4 is smaller than the distance from the second bottom surface 404 to the top wall of the air outlet channel 4; When flowing through the air outlet channel 4, a tendency to flow into the accommodating chamber 1 can be obtained, the efficiency of airflow flow is improved, and the loss of airflow in the air duct is avoided; at the same time, when the water or steam in the accommodating chamber 1 is When the flow is reversed along the air outlet channel 4, the height difference can also play a role of changing the flow direction of water or steam, thereby playing a blocking role.

Embodiment 8

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of the above-mentioned seventh embodiment. In this embodiment, when the air flow generated by the fan unit 201 is in the air outlet channel 4 , along the air inlet 401 When one side flows toward the side of the air outlet 402, the height difference between the first bottom surface 403 and the second bottom surface 404 forms the diversion structure, and the height difference makes the air flow through it to form a downward flow trend, The tendency of airflow to flow from the top of the accommodating chamber 1 to the accommodating chamber 1 is enhanced; further, when the water or steam in the accommodating chamber 1 is in the air outlet channel 4, along the When flowing to the side of the air inlet 401 , the height difference between the first bottom surface 403 and the second bottom surface 404 forms the anti-backflow structure, and the height difference makes the water or steam flow back from the accommodating chamber 1 to flow. The trajectory changes, reducing the fluidity of the water or steam.

Through the change of the airflow area of the air duct and the arrangement of two planes with different heights at the air outlet 402, multiple superpositions of the effect of accelerating the airflow passing through are formed, which ensures that the airflow is quickly and uniformly diverted in the air duct, and is accelerated into the container. In the chamber 1, at the same time, the effect of multiple superposition of the water or steam flowing through is formed to prevent backflow, which further prevents the water or steam in the chamber 1 from flowing back along the air duct, causing damage to the fan unit 201, or remaining in the air duct. Causes corrosion and mildew to occur.

Embodiment 9

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of any one of the above-mentioned Embodiments 1 to 8. The side wall of the air outlet channel 4 in this embodiment is arranged in an arc shape, and is connected to the guide plate. 405 cooperate to form a structure for adjusting the airflow passing through; the arc-shaped side wall of the air outlet channel 4 is at least partially in a C-shaped structure, and the shape of the air duct at the top of the accommodating chamber 1 is set to an approximate "C"-shaped arc The shape structure avoids the backflow of water or steam from the air duct during the working process of the dishwasher, causing damage or corrosion of the cross-flow fan.

Embodiment ten

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of any one of the above-mentioned Embodiments 1 to 9. The flow guide structure in this embodiment includes a plurality of spaced intervals at the bottom of the air outlet channel 4 . The guide plate 405 of the wall, the guide plate 405 guides the turbulent air flow in the flow area into a smooth and uniform air flow in the flow area; the guide plate 405 guides the air flow through the air outlet channel 4 from the air inlet. 401 is guided to the air outlet 402; further, the guide plate 405 is arranged in an arc shape, forming a trend of airflow from the air inlet 401 to the air outlet 402; further, the guide plate 405 The radian is the same as the radian of the side wall of the air outlet channel 4, and the guide plate 405 with the same radian as the side wall of the air duct enhances the guiding effect on the airflow flowing in the air duct, so that the airflow passes through the guide plate 405, and changes from turbulent airflow to . A uniform airflow; the guide plate 405 is at least partially arranged on the first bottom surface 403 .

Embodiment 11

As shown in FIG. 6 to FIG. 9 , this embodiment is a further limitation of any one of the above-mentioned embodiments 1 to 10. The air duct structure of a dishwasher described in this embodiment, the anti-air The reverse flow structure includes a water retaining rib 409 arranged on the first bottom surface 403; the water retaining rib 409 is arranged perpendicular to the flow direction of the water or steam in the air outlet channel 4, and the water retaining rib 409 further blocks the flow of the water in the outlet channel 4. The water or steam flowing in the wind channel 4 .

It can be seen from FIG. 6 to FIG. 9 , at the air outlet 402 of the air outlet channel 4, a grill 406 is also provided, and a plurality of grilles 407 are arranged on the grill 406 at intervals; A shaft rotates, and at least two of the grids 407 rotate at different angles and directions around the axis, so as to adjust the air outlet angle of the grids 407;

When the air flow generated by the fan unit 201 flows in the air outlet channel 4 along the side of the air inlet 401 to the side of the air outlet 402 , the air flow in the air outlet channel 4 is at least two Under the guidance of the grids 407 with different angles and directions, they enter the accommodation chamber 1 at different angles and directions. The adjustment of different angles meets the needs of customers for washing at different angles. The grille 406 with an adjustable orientation is set at 402. Further, the grille 406 will face at least two different directions during the adjustment process, which ensures that the airflow will flow uniformly in the process of entering the accommodating chamber 1 through the air duct. Effect;

When the water or steam in the accommodating chamber 1 flows in the air outlet channel 4 along the side of the air outlet 402 to the side of the air inlet 401 , the water or steam in the accommodating chamber 1 flows The steam, under the action of the grilles 407 with different angles and directions, is at least partially blocked from the air outlet channel 4, and a grille 406 with an adjustable orientation is provided at the air outlet 402 of the air channel. Further, the grille During the adjustment process, the 406 faces at least two different directions, which realizes the initial shielding of the water or steam in the accommodating chamber 1 from entering the air duct, and reduces the probability of water or steam backflowing along the air duct.

Embodiment 12

As shown in FIG. 3 to FIG. 9 , this embodiment is a further limitation of any of the above-mentioned embodiments from Embodiment 1 to Embodiment 11. The air duct structure of a dishwasher described in this embodiment is described in The grille 406 and the air outlet 402 are detachably connected; the periphery of the grille 406 is provided with claws; the air outlet 402 is provided with a slot corresponding to the claws; The grooves cooperate to realize the disassembly of the grill 406 and the air outlet 402 , which is convenient for users to clean and maintain the grill 406 .

Specifically, when the air duct is assembled, several claws are evenly distributed around the grille 406, and the air outlet channel 4 and the accommodating chamber 1 cooperate with the claws arranged around the accommodating chamber 1 corresponding to the claws. Fixed, the arc surface of the air outlet channel 4 is attached to the accommodation chamber 1 , and the air inlet channel 2 is attached to the outer side of the bottom of the accommodation chamber 1 .

Embodiment thirteen

As shown in FIG. 3 to FIG. 9 , this embodiment is a further limitation of any one of the above-mentioned embodiments 1 to 12. The anti-backflow structure in this embodiment includes being disposed in the air outlet channel 4 , The switch portion 408 capable of opening or closing the air outlet channel 4; the switch portion 408 opens or closes the air outlet channel 4 at least along the direction in which the air flows in the air outlet channel 4; further, the The switch part 408 is connected with a drive device; after the drive device receives an opening or closing signal, it drives the switch part 408 to open or close the air outlet channel 4 ; further, at least the switch part 408 The outer edge is wrapped with an elastic sealing structure, and the sealing structure ensures the sealing effect of the air outlet channel 4 when the switch part 408 is closed; when the switch part 408 is closed, the sealing structure and the air outlet channel are closed. The inner wall of 4 is matched to seal the air outlet channel 4 by the switch portion 408 .

Embodiment 14

As shown in FIG. 4 , this embodiment is a further limitation of any one of the above-mentioned Embodiments 1 to 13. The anti-backflow structure of this embodiment further includes a device disposed at the bottom of the air induction channel 3 . There is a water storage tank 301, and the water storage tank 301 makes the residual water in the air duct be hit and stored in one place; the inner wall of the air induction channel 3 is formed with water or steam returned from the air outlet channel 4 to drain to the storage tank. The structure of the water tank 301 enables the residual steam to be drained into the water storage tank 301 after being liquefied on the inner wall of the air duct; the water storage tank 301 is provided with a drain port at the lowest end to avoid the water or steam in the accommodating chamber 1 After backflowing along the air duct, the washing water remains in the air duct for a long time, causing corrosion and deterioration; the drain port is opened and closed by the plug body that is pulled or rotated; the plug body is pulled or rotated manually or Electric way to achieve.

Embodiment fifteen

As shown in FIG. 10 to FIG. 12 , this embodiment is a further limitation of any one of the above-mentioned Embodiments 1 to 14. The air duct structure of a dishwasher described in this embodiment further includes and The air exhaust channel 8 communicated with the accommodating chamber 1 is used to discharge the gas in the accommodating chamber 1 out of the dishwasher; further, the air exhaust channel 8 is provided with an adjustment component 801, It is used to realize the connection or disconnection between the exhaust channel 8 and the accommodating chamber 1 . An adjustment mechanism that can adjust the size of the air outlet is provided in the air exhaust channel 8, so that the area of the air outlet 402 can be adjusted, which can not only ensure the temperature of the dishwasher during washing, save energy, but also reduce the discharge of water from the exhaust duct during washing. Risks from the outside world; in the drying stage, the opening of the tuyere can be realized through the mechanism, the discharge of the wind is accelerated, the drying is fast, and the dissipation of heat from the accommodating chamber 1 is avoided.

Embodiment 16

As shown in FIG. 10 to FIG. 12 , this embodiment is a further limitation of the fifteenth embodiment above. The adjustment assembly 801 in this embodiment includes a first adjustment unit 802 and a second adjustment unit 803 ; the first adjustment unit 802 , which is arranged in the exhaust passage 8 to connect or disconnect the exhaust passage 8 with the accommodation chamber 1; the second adjustment unit 803, which is connected to the first adjustment unit 802, is the first An adjustment unit 802 provides power to realize the connection or disconnection between the exhaust channel 8 and the accommodation chamber 1, and an adjustment mechanism capable of adjusting the size of the exhaust port is provided in the exhaust channel 8, so that the size of the air outlet 402 can be adjusted. It can not only ensure the temperature of the dishwasher during washing, save energy, but also reduce the risk of water being discharged from the air exhaust duct during washing; in the drying stage, the mechanism can be used to open the air outlet, speed up the discharge of wind, and quickly dry , and avoid heat dissipation from the accommodating chamber 1 .

Embodiment seventeen

As shown in FIG. 10 to FIG. 12 , this embodiment is a further limitation of the fifteenth or sixteenth embodiment above. The exhaust channel 8 in this embodiment is provided with a slideway; the first adjustment unit 802 is provided with a slideway. In the slideway, under the action of the second adjusting unit 803, it moves in a straight line, thereby realizing the connection or disconnection between the exhaust channel 8 and the accommodating chamber 1; further, the first The area of the adjusting unit 802 shielding the exhaust passage 8 is S1; the area of the exhaust passage 8 is S2; the ratio of S1 to S2 is 0<S1/S2≦1.

The operating model of the adjustment mechanism and the shape of the exhaust channel 8 are set, which enhances the adaptability of the adjustment mechanism, as well as the adaptability of different dishwasher models and different shapes of the exhaust channel 8. The adjustment of channel 8 meets the needs of different gear exhaust and different drying conditions.

Embodiment 18

As shown in FIGS. 10 to 12 , this embodiment is a further limitation of the fifteenth or sixteenth embodiment described above. The first adjustment unit 802 and the second adjustment unit 803 in this embodiment are connected by a rotating shaft 804 . ; Under the action of the second adjustment unit 803, the first adjustment unit 802 is in a rotational motion in the exhaust passage 8, thereby realizing the communication between the exhaust passage 8 and the accommodating chamber 1 or disconnected; the rotating shaft 804 is arranged at a position close to one end face of the first adjusting unit 802 or at the center of rotation; the area of the first adjusting unit 802 shielding the exhaust passage 8 is S1; the The area of the exhaust passage 8 is S2; the ratio of S1 to S2 is 0<S1/S2≦1.

The operating model of the adjustment mechanism and the shape of the exhaust channel 8 are set, which enhances the adaptability of the adjustment mechanism, as well as the adaptability of different dishwasher models and different shapes of the exhaust channel 8. The adjustment of channel 8 meets the needs of different gear exhaust and different drying conditions.

Example 19

As shown in FIG. 13 , this embodiment is a further limitation of any of the above-mentioned embodiments from the first embodiment to the eighteenth embodiment. An air duct structure of a dishwasher according to this embodiment further includes an accommodating chamber 1 A connected steam generating assembly 9, the steam generating assembly 9 uses the water in the accommodating chamber 1 to generate steam, and transports it back into the accommodating chamber 1, thereby realizing steam washing of the items to be washed.

The steam generating assembly 9 includes a first connecting pipe 901 , a second connecting pipe 902 , a third connecting pipe 903 , a power part 904 and a heating part 905 ; the first connecting pipe 901 communicates with the power part 904 ; the third connecting pipe 903 communicates with the heating part 905 ; the first connecting pipe 901 and the third connecting pipe 903 communicate with the accommodating chamber 1 respectively; the second connecting pipe 902 Connecting the power part 904 and the heating part 905, the present invention realizes the use of the water in the accommodating chamber 1 to generate steam by arranging the steam generating assembly 9 that communicates with the accommodating chamber 1 to generate steam, and realize the effect of the steam generation on the tableware. cleaning, and avoids the problem of separate water diversion.

Further, under the action of the power part 904, the water in the accommodating chamber 1 enters the power part 904 after passing through the first connecting pipe 901; after the water is pressurized in the power part 904 , enters the heating part 905 through the second connecting pipe 902 , and is heated and boiled to high temperature steam under the action of the heating part 905 ; the high temperature steam enters the The accommodating chamber 1 realizes the steam washing of the items to be washed in the accommodating chamber 1. By converting the water in the accommodating chamber 1 into high-temperature steam, the temperature of the chamber is rapidly increased in a short period of time, effectively sterilizing and Removes stains from tableware.

Further, the temperature of the high-temperature water vapor is 100° C.; the first connecting pipe 901 and the third connecting pipe 903 are hoses; wherein, the third connecting pipe 903 is a high-temperature resistant hose.

Embodiment 20

As shown in FIG. 13 , this embodiment is a further limitation of the above-mentioned nineteenth embodiment. The air duct structure of a dishwasher according to this embodiment further includes a water tank configured to accommodate the items to be washed; the water tank accommodates the items to be washed The space forms the accommodating chamber 1 .

Example 21

As shown in FIG. 14 , this embodiment is a further limitation of the above-mentioned embodiment 19 or 20. The method of using the steam generating assembly 9 in this embodiment includes the following steps:

S1. During the startup process, turn on the startup power;

S2. The pre-washing process, the dishwasher is subjected to a water feeding operation and pre-washing, and after the pre-washing of the items to be washed in the accommodating chamber 11 is completed, a draining operation is performed;

S3. The rinsing process, performing a water feeding operation on the dishwasher, and performing rinsing, and performing a draining operation after the items to be washed in the containing chamber 11 are rinsed;

S4. During the drying process, a drying operation is performed on the dishwasher.

Embodiment 22

As shown in FIG. 14 , this embodiment is a further limitation of the twenty-first embodiment above. In the method for using the steam generating assembly 9 in this embodiment, in the pre-washing process of step S2, before the pre-washing operation is performed , firstly perform the steam washing operation on the dishwasher; the steam used in the steam washing operation comes from the steam generating assembly 9 communicated with the accommodating chamber 1 .

Embodiment 23

As shown in FIG. 14 , this embodiment is a further limitation of the above-mentioned Embodiment 21 or Embodiment 22. In the method of using the steam generating assembly 9 in this embodiment, in the rinsing process of step S3, execute At least two watering, rinsing, and draining operations.

Embodiment 24

As shown in FIG. 14 , this embodiment is a further limitation of any one of the embodiments described in Embodiment 21 to Embodiment 23 above. The method for using the steam generating assembly 9 in this embodiment starts at step S1 During the process, after the startup power is turned on, the dishwasher is drained to drain the remaining water in the accommodating chamber 1 .

In the description provided herein, numerous specific details are set forth. It will be understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it is to be understood that in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or its description. This disclosure, however, should not be construed as reflecting an intention that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the Detailed Description are hereby expressly incorporated into this Detailed Description, with each claim standing on its own as a separate embodiment of this invention.

All features disclosed in this specification (including accompanying claims, abstract and drawings) and any method so disclosed may be employed in any combination, unless at least some of such features and/or procedures or elements are mutually exclusive. All processes or units of equipment are combined. Each feature disclosed in this specification (including accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, it will be understood by those skilled in the art that although some of the embodiments described herein include certain features, but not others, included in other embodiments, that combinations of features of different embodiments are intended to be within the scope of the invention within and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.

It should be noted that the above-described embodiments illustrate rather than limit the invention, and that alternative embodiments may be devised by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, personnel can make some changes or modifications to equivalent examples of equivalent changes by using the above-mentioned technical content, but any content that does not depart from the technical solution of the present invention is based on the technical solution of the present invention. Substantially any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (10)

1. An air duct structure of a dish washer, which is characterized in that: comprises that

An air duct communicating with the housing chamber (1) of the dishwasher;

a fan unit (201), an adjusting assembly (801), a flow guide structure and a backflow prevention structure are arranged in the air duct;

the adjusting assembly (801) is used for realizing the communication or disconnection of the air duct and the accommodating chamber (1);

the flow guide structure guides the airflow flowing through the air channel and flowing in a disordered way into uniform airflow;

the backflow prevention structure prevents water or steam in the accommodating chamber (1) from flowing back into the air return duct.

2. The air duct structure of dishwasher according to claim 1, wherein: the air duct comprises

An air inlet channel (2), an air inducing channel (3) and an air outlet channel (4) which are communicated with the accommodating chamber (1) and are sequentially connected;

a discharge channel (8) communicated with the accommodating chamber (1) and used for discharging the gas in the accommodating chamber (1) out of the dishwasher;

the air inlet channel (2) is provided with a fan unit (201);

the air inducing channel (3) is at least partially attached to the outer wall of the accommodating chamber (1);

the air outlet channel (4) is at least partially attached to the top wall of the accommodating chamber (1) and is at least communicated with the accommodating chamber (1);

the air exhaust channel (8) is provided with the adjusting assembly (801) for realizing the connection or disconnection of the air exhaust channel (8) and the accommodating chamber (1);

preferably, an arc-shaped transition structure (6) is arranged at the connection part of the air inlet channel (2) and the air inducing channel (3) and the connection part of the air inducing channel (3) and the air outlet channel (4);

the arc-shaped transition structure (6) forms a trend that the airflow generated by the fan unit (201) is introduced into the induced air channel (3) and the air outlet channel (4) from the air inlet channel (2);

more preferably, the air channel formed by the air inducing channel (3) on the outer wall of the accommodating chamber (1) is of a straight structure convenient for air flow to pass through;

preferably, the cross-sectional area of the airflow field in the air inducing channel (3) is smaller than that of the airflow field in the air inlet channel (2);

still preferably, the adjustment assembly (801) comprises a first adjustment unit (802) and a second adjustment unit (803);

the first adjusting unit (802) is arranged in the air exhaust channel (8) and is used for connecting or disconnecting the air exhaust channel (8) and the accommodating chamber (1);

the second adjusting unit (803) is connected with the first adjusting unit (802) and provides power for the first adjusting unit (802) to realize the connection or disconnection of the air exhaust channel (8) and the accommodating chamber (1);

preferably, the fan unit (201) is a cross-flow fan disposed in the air intake duct (2).

3. The air duct structure of a dishwasher according to claim 2, wherein:

a slideway is arranged in the exhaust channel (8);

the first adjusting unit (802) is arranged in the slide way and moves linearly under the action of the second adjusting unit (803), so that the exhaust channel (8) is communicated with or disconnected from the accommodating chamber (1);

preferably, the area of the first adjusting unit (802) for shielding the exhaust channel (8) is S1;

the area of the exhaust channel (8) is S2;

the ratio of S1 to S2 is 0< S1/S2 ≦ 1.

4. The air duct structure of a dishwasher according to claim 2, wherein:

the first adjusting unit (802) and the second adjusting unit (803) are connected through a rotating shaft (804);

the first adjusting unit (802) rotates in the exhaust channel (8) under the action of the second adjusting unit (803), so that the exhaust channel (8) is communicated with or disconnected from the accommodating chamber (1);

preferably, the rotation shaft (804) is disposed at a position of the first adjusting unit (802) near one end surface or at a rotation center;

more preferably, the area of the first adjusting unit (802) shielding the exhaust duct (8) is S1;

the area of the exhaust channel (8) is S2;

the ratio of S1 to S2 is 0< S1/S2 ≦ 1.

5. The air duct structure of a dishwasher according to claim 2, wherein:

the air outlet channel (4) comprises an air inlet (401) and an air outlet (402);

the air inlet (401) is communicated with the induced air channel (3);

the air outlet (402) is communicated with the accommodating chamber (1);

preferably, the area of the airflow domain formed by the air outlet channel (4) from the air inlet (401) to one side of the air outlet (402) is gradually increased;

more preferably, the bottom wall of the air outlet channel (4) comprises a first bottom surface (403) and a second bottom surface (404);

the first bottom surface (403) is provided with the air inlet (401);

the second bottom surface (404) is provided with the air outlet (402);

it is also preferred that a height difference is formed between the first bottom surface (403) and the second bottom surface (404);

more preferably, when the airflow generated by the fan unit (201) flows along the side of the air inlet (401) to the side of the air outlet (402) in the air outlet channel (4), the height difference between the first bottom surface (403) and the second bottom surface (404) forms the flow guiding structure;

when water or steam in the accommodating chamber (1) flows along one side of the air outlet (402) to one side of the air inlet (401) in the air outlet channel (4), the height difference between the first bottom surface (403) and the second bottom surface (404) forms the backflow preventing structure;

preferably, the distance from the first bottom surface (403) to the top wall of the air outlet channel (4) is smaller than the distance from the second bottom surface (404) to the top wall of the air outlet channel (4);

preferably, the side wall of the air outlet channel (4) is arc-shaped;

again preferably, the arc-shaped side wall of the air outlet channel (4) is at least partially in a C-shaped structure.

6. The air duct structure of dishwasher according to claim 5, wherein:

the flow guide structure comprises a plurality of guide plates (405) which are arranged on the bottom wall of the air outlet channel (4) at intervals;

the guide plate (405) guides the airflow flowing through the air outlet channel (4) from the air inlet (401) to the air outlet (402);

preferably, the guide plate (405) is arranged in an arc shape;

forming a trend of air flow from the air inlet (401) to the air outlet (402);

more preferably, the radian of the guide plate (405) is the same as the radian of the side wall of the air outlet channel (4);

it is also preferred that the guide plate (405) is at least partially disposed on the first bottom surface (403).

7. The air duct structure of a dishwasher according to any one of claims 2 to 6, wherein:

a grille (406) is arranged at the air outlet (402) of the air outlet channel (4);

a plurality of grid sheets (407) are arranged on the grid (406) at intervals;

preferably, the grid plate (407) can rotate around a shaft, so as to adjust the air outlet angle of the grid plate (407);

more preferably, the angles and directions of the pivoting of at least two of the grids (407) are different;

when the airflow generated by the fan unit (201) flows along one side of the air inlet (401) to one side of the air outlet (402) in the air outlet channel (4), the airflow in the air outlet channel (4) enters the accommodating chamber (1) at different angles and directions under the guidance of the grating sheets (407) with at least two different angles and directions;

when water or steam in the accommodating chamber (1) flows from the air outlet channel (4) to the air inlet (401) along one side of the air outlet (402), at least part of the water or steam in the accommodating chamber (1) is blocked outside the air outlet channel (4) under the action of the grid sheets (407) with different angles and directions;

preferably also, the grille (406) is detachably connected with the air outlet (402);

still preferably, the grating (406) is provided with claws at its periphery;

the air outlet (402) is provided with a clamping groove corresponding to the clamping jaw;

the clamping claws are matched with the clamping grooves, so that the grating (406) and the air outlet (402) are detached.

8. The air duct structure of a dishwasher according to claim 2 or 5, wherein:

the backflow preventing structure comprises a switch part (408) which is arranged in the air outlet channel (4) and can open or close the air outlet channel (4);

preferably, the switch part (408) opens or closes the wind outlet channel (4) at least along the direction of the airflow flowing in the wind outlet channel (4);

more preferably, a driving device is connected to the switch part (408);

after the driving device receives the opening or closing signal, the switching part (408) is driven to open or close the air outlet channel (4);

it is also preferred that at least the outer edge of the switching section (408) is wrapped with a resilient sealing structure;

when the switch part (408) is closed, the sealing structure is matched with the inner wall of the air outlet channel (4), and the switch part (408) seals the air outlet channel (4).

9. The air duct structure of dishwasher according to claim 5, wherein:

the backflow prevention structure comprises a water retaining rib (409) arranged on the first bottom surface (403);

the water retaining rib (409) is perpendicular to the flowing direction of the air flow in the air outlet channel (4).

10. The air duct structure of a dishwasher according to claim 2, wherein:

the backflow prevention structure also comprises a water storage tank (301) arranged at the bottom of the induced draft channel (3);

preferably, the inner wall of the induced air channel (3) is formed with a structure for guiding water or steam flowing back from the air outlet channel (4) to the water storage tank (301);

more preferably, the lowest end of the water storage tank (301) is provided with a water outlet;

it is also preferable that the drain port is opened and closed by a drawn or rotated stopper body;

still preferably, the pulling or rotation of the plug body is achieved manually or electrically.

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