Hot air device and dish washing machine

Abstract

The hot air device comprises a draught fan, a heater and a first flow guide part, the draught fan comprises a volute and a centrifugal impeller arranged in the volute, the volute comprises a first side plate and a volute tongue oppositely arranged with the first side plate in a spaced mode, and an air outlet is formed in the portion, between the first side plate and the volute tongue, of the volute; the mutual orientation between the first side plate and the volute tongue is a first direction, a first virtual plane perpendicular to the first direction is formed by passing through the center of the air outlet, one side of the first virtual plane is a first space, the other side of the first virtual plane is a second space, the first side plate is located in the first space, the volute tongue is located in the second space, and the heater is arranged in the air outlet direction of the fan. And the first flow guide part is arranged in the air outlet direction of the fan and located on the upstream of the heater, the first flow guide part is provided with a first upstream end, the first upstream end is located in the first space, the first upstream end and the first side plate are alternately arranged in the first direction, and the first flow guide part extends towards the heater and the second space from the first upstream end, so that uniform heating of airflow is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of dishwashers, and particularly relates to a hot air device and a dishwasher. Background Art

[0002] Some dishwashers are configured with a hot air drying system, which realizes the drying of tableware by inputting hot air into the inner cavity of the dishwasher. The hot air drying system mainly includes a fan and a heater. The fan drives the air flow to flow, and the heater heats the air flow passing through it to form hot air. At present, the flow channel structure design of the hot air drying system is unreasonable, the air flow heating is uneven, and the drying effect of the dishwasher needs to be improved. Summary of the Invention

[0003] The present application aims to at least solve one of the technical problems in the related art to some extent. For this reason, the present application proposes a hot air device.

[0004] To achieve the above object, the present application discloses a hot air device, which includes:

[0005] A fan, the fan includes a volute and a centrifugal impeller disposed inside the volute. The volute includes a first side plate and a volute tongue oppositely and spaced apart from the first side plate. The volute is provided with an air outlet between the first side plate and the volute tongue. The direction of facing each other between the first side plate and the volute tongue is the first direction. A first virtual plane perpendicular to the first direction is made through the center of the air outlet. One side of the first virtual plane is the first space, and the other side is the second space. The first side plate is located in the first space, and the volute tongue is located in the second space;

[0006] A heater, disposed in the air outlet direction of the fan; and

[0007] A first deflector, disposed in the air outlet direction of the fan and upstream of the heater. The first deflector has a first upstream end, the first upstream end is located in the first space and is spaced apart from the first side plate along the first direction, and the first deflector extends from the first upstream end towards the heater and towards the second space.

[0008] In some embodiments of the present application, the first deflector further has a first downstream end, and the first downstream end is located in the second space and is spaced apart from the volute tongue along the first direction.

[0009] In some embodiments of the present application, the first deflector is a planar structure.

[0010] In some embodiments of the present application, the first deflector is an arc-shaped structure, the direction of the volute tongue facing the first side plate is the second direction, and the first deflector protrudes along the second direction.

[0011] In some embodiments of the present application, the curvature of the first flow guide is 0.01 to 0.1.

[0012] In some embodiments of the present application, with the extending direction of the rotation axis of the blower as the height direction, the highest point of the first flow guide is higher than the highest point of the blades of the centrifugal impeller, and the lowest point of the first flow guide is lower than the lowest point of the blades of the centrifugal impeller.

[0013] In some embodiments of the present application, the first flow guide is disposed at the air outlet.

[0014] In some embodiments of the present application, the hot air device further includes a second flow guide disposed in the air outlet direction of the blower and upstream of the heater. The second flow guide is located in the second space. The second flow guide has a second upstream end. The second flow guide extends from the second upstream end toward the heater and away from the first space. When projected along the first direction, at least a part of the projection of the second flow guide coincides with at least a part of the projection of the volute tongue.

[0015] In some embodiments of the present application, the second flow guide is a planar structure.

[0016] In some embodiments of the present application, the second flow guide is an arc-shaped structure. The direction from the first side plate toward the volute tongue is the third direction. The second flow guide protrudes along the third direction.

[0017] In some embodiments of the present application, the curvature of the second flow guide is 0.01 to 0.1;

[0018] And / or, the heater has a flow channel adapted for the air flow to pass through. The second flow guide has a second downstream end. The tangential direction of the second downstream end is the same as the extending direction of the flow channel of the heater.

[0019] In some embodiments of the present application, with the extending direction of the rotation axis of the blower as the height direction, the highest point of the second flow guide is higher than the highest point of the blades of the centrifugal impeller, and the lowest point of the second flow guide is lower than the lowest point of the blades of the centrifugal impeller.

[0020] In some embodiments of the present application, along the first direction, the distance between the first flow guide and the second flow guide is 10 mm to 20 mm;

[0021] And / or, the length of the first flow guide is 10 mm to 30 mm;

[0022] And / or, the length of the second flow guide is 10 mm to 30 mm.

[0023] The second aspect of the present application discloses a dishwasher, which includes the above-mentioned hot air device.

[0024] Through the technical solution of the present application, by providing the first flow guiding member, the first flow guiding member helps to guide the air flow to spread to the entire heater, avoiding the aggregation of the air flow. In this way, the heater heats the air flow more evenly. When applying the hot air device to the dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0025] Other advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0027] Figure 1 Schematic diagram of the hot air device in some embodiments;

[0028] Figure 2 Schematic diagram of the hot air device in some embodiments (showing the partial structure, with the first flow guiding member provided);

[0029] Figure 3 For Figure 2 Partial enlarged view of the shown hot air device;

[0030] Figure 4 Top view of the hot air device in some embodiments (showing the partial structure, with the first flow guiding member provided);

[0031] Figure 5 For Figure 4 Partial enlarged view of the shown hot air device;

[0032] Figure 6 Flow guiding schematic diagram of the first flow guiding member in some embodiments;

[0033] Figure 7 Schematic diagram of the hot air device in some embodiments (showing the partial structure, with the first flow guiding member and the second flow guiding member provided);

[0034] Figure 8 For Figure 7 Partial enlarged view of the shown hot air device;

[0035] Figure 9Top view of the hot air device in some embodiments (showing a partial structure, with a first flow guide and a second flow guide);

[0036] Figure 10 is Figure 9 Partial enlarged view of the shown hot air device;

[0037] Figure 11 Flow guiding schematic diagram of the first flow guide and the second flow guide in some embodiments.

[0038] Explanation of the reference numerals in the drawings:

[0039] Hot air device 100, fan 1000, volute 1100, air inlet 1101, air outlet 1102, first side plate 1110, volute tongue 1120, centrifugal impeller 1200, blade 1210, heater 2000, flow channel 2100, first flow guide 3000, first upstream end 3100, first downstream end 3200, second flow guide 4000, second upstream end 4100, second downstream end 4200, first virtual plane 5000, first space 5100, second space 5200, tangent line 6000.

[0040] The realization of the purpose, functional features and advantages of this application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts shall fall within the scope of protection of this application.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0043] In this application, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0044] In addition, in the present application, descriptions such as "first" and "second" are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0045] The first aspect of the present application discloses a hot air device 100, in combination with Figures 1 to 6 As shown, in some embodiments, the hot air device 100 includes a blower 1000, a heater 2000, and a first deflector 3000. The blower 1000 includes a volute 1100 and a centrifugal impeller 1200. The centrifugal impeller 1200 is disposed inside the volute 1100. The volute 1100 includes a first side plate 1110 and a volute tongue 1120. The first side plate 1110 and the volute tongue 1120 are relatively and alternately arranged. The volute 1100 has an air outlet 1102 between the first side plate 1110 and the volute tongue 1120. The direction in which the first side plate 1110 and the volute tongue 1120 face each other is the first direction. A first virtual plane 5000 perpendicular to the first direction is made through the center of the air outlet 1102. One side of the first virtual plane 5000 is a first space 5100, and the other side is a second space 5200. The first side plate 1110 is located in the first space 5100, and the volute tongue 1120 is located in the second space 5200. The heater 2000 is disposed in the air outlet direction of the blower 1000. The first deflector 3000 is disposed in the air outlet direction of the blower 1000 and is located upstream of the heater 2000. The first deflector 3000 has a first upstream end 3100. The first upstream end 3100 is located in the first space 5100 and is alternately arranged with the first side plate 1110 along the first direction. The first deflector 3000 extends from the first upstream end 3100 towards the heater 2000 and towards the second space 5200.

[0046] By providing the first deflector 3000, the first deflector 3000 helps to guide the air flow to spread over the entire heater 2000, avoiding air flow aggregation. In this way, the heater 2000 heats the air flow more evenly. When the hot air device 100 is applied to a dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0047] The fan 1000 is a kind of fluid machinery used to drive the flow of air. In this embodiment, the fan 1000 includes a volute 1100 and a centrifugal impeller 1200. The volute 1100 is provided with an air inlet 1101 and an air outlet 1102. The centrifugal impeller 1200 is arranged inside the volute 1100 and is located between the air inlet 1101 and the air outlet 1102. The centrifugal impeller 1200 can rotate inside the volute 1100 to drive the flow of air. The volute 1100 is generally in the shape of a snail shell. The main function of the volute 1100 is to collect the gas discharged by the centrifugal impeller 1200 and guide it to the air outlet 1102 for discharge. It can be understood that the rotation of the centrifugal impeller 1200 needs to be realized by the drive of a drive mechanism. For example, the fan 1000 also has a motor for driving the centrifugal impeller 1200 to rotate. The motor is connected to the centrifugal impeller 1200 so as to drive the centrifugal impeller 1200 to rotate.

[0048] The volute 1100 includes a first side plate 1110 and a volute tongue 1120. The first side plate 1110 and the volute tongue 1120 are arranged opposite to each other with an interval. The air outlet 1102 is arranged between the first side plate 1110 and the volute tongue 1120. The heater 2000 is arranged in the air outlet direction of the fan 1000. Based on the characteristics of the fan 1000, among the air flow discharged by the fan 1000, the air volume near the first side plate 1110 is much larger, more concentrated, and faster than that near the volute tongue 1120. Eventually, the air flow reaching the heater 2000 is unevenly distributed on the heater 2000. After the air flow is heated by the heater 2000, the air temperature at the position with a large air volume is low, and the air temperature at the position with a small air volume is high. This causes uneven heating of the air flow and is not conducive to the drying of the target object. Therefore, in this embodiment, by arranging the first deflector 3000, the problem of uneven air flow heating is solved to a certain extent.

[0049] See Figure 5As shown, the facing directions of the first side plate 1110 and the volute tongue 1120 are the first direction, defining a first virtual plane 5000. The first virtual plane 5000 passes through the center of the air outlet 1102 and is perpendicular to the first direction. One side of the first virtual plane 5000 is the first space 5100, and the other side is the second space 5200. The first side plate 1110 is located in the first space 5100, and the volute tongue 1120 is located in the second space 5200. The first deflector 3000 is arranged in the air outlet direction of the blower 1000 and is located upstream of the heater 2000. The so-called air outlet direction means that the air flow needs to contact the first deflector 3000 and flow through the first deflector 3000. The so-called upstream means that the air flow needs to flow through the first deflector 3000 first and then through the heater 2000. The first deflector 3000 has a first upstream end 3100 and a first downstream end 3200. The so-called first upstream end 3100 is the part of the first deflector 3000 that first contacts the air flow, and the first downstream end 3200 is the part where the air flow detaches from the first deflector 3000. Or it can be understood that the first upstream end 3100 is the part of the first deflector 3000 closest to the centrifugal impeller 1200, and the first downstream end 3200 is the part of the first deflector 3000 farthest from the centrifugal impeller 1200. The first upstream end 3100 is located in the first space 5100 and is arranged at intervals with the first side plate 1110 in the first direction. The first deflector 3000 extends from the first upstream end 3100 towards the heater 2000 and towards the second space 5200. By setting it like this, the first upstream end 3100 is relatively close to the first side plate 1110. Since the air volume close to the first side plate 1110 is much larger and more concentrated than the air volume close to the volute tongue 1120, the first deflector 3000 can guide a part of the air flow close to the first side plate 1110 towards the second space 5200, realizing the diffusion of the air flow in the air duct, suppressing the aggregation of the air flow at a certain position to a certain extent, so that the air flow reaches the heater 2000 more evenly. The heater 2000 generally has a plurality of flow channels 2100, and the air flow passes through the flow channels 2100 more evenly and is evenly heated. For example, the first deflector 3000 can be arranged at the air outlet 1102 to make full use of the distance between the blower 1000 and the heater 2000, and the air flow realizes more uniform diffusion before reaching the heater 2000.

[0050] In some embodiments, in combination with Figure 5As shown, the first flow guide 3000 further has a first downstream end 3200, and the first downstream end 3200 is located in the second space 5200 and is arranged alternately with the volute tongue 1120 along the first direction. The first downstream end 3200 is the part where the air flow detaches from the first flow guide 3000. By setting it in this way, that is, the first flow guide 3000 extends from the first space 5100 through the first virtual plane 5000 to the second space 5200, so as to better guide the air flow to the second space 5200, which is beneficial to improving the diffusion degree of the air flow in the air duct. It can be understood that although the air volume near the first side plate 1110 is larger, more concentrated and the wind speed is higher than that near the volute tongue 1120, there is still air flow on the side near the volute tongue 1120. Therefore, the first downstream end 3200 and the volute tongue 1120 are arranged alternately along the first direction to leave a space for the air flow to flow.

[0051] In some embodiments, the first flow guide 3000 is a planar structure. In this way, the first flow guide 3000 is inclined from the first space 5100 towards the second space 5200, and part of the air flow near the first side plate 1110 is guided to the second space 5200 along the first flow guide 3000 when flowing through the first flow guide 3000.

[0052] Combined with Figure 5 and Figure 6 As shown, in some embodiments, the first flow guide 3000 is an arc-shaped structure. The arc-shaped first flow guide 3000 can more effectively guide the air flow, and the air flow is more stable, which helps to reduce energy loss.

[0053] The direction of the volute tongue 1120 towards the first side plate 1110 is the second direction, and the first flow guide 3000 protrudes along the second direction. Since the air volume and wind speed of the air flow closer to the first side plate 1110 are larger, the first flow guide 3000 protrudes along the second direction, that is, the convex surface of the first flow guide 3000 is more likely to receive the high-speed and concentrated air flow, so it is more beneficial to guide the air flow to diffuse towards the second space 5200. In addition, on the premise of the same occupied space, compared with the planar first flow guide 3000, the included angle between the tangential direction of the first downstream end 3200 of the arc-shaped first flow guide 3000 and the first direction is reduced, which is beneficial to increasing the diffusion range of the air flow.

[0054] Optionally, the curvature of the first flow guide 3000 is 0.01 - 0.1. For example, the curvature of the first flow guide 3000 is 0.01, 0.04, 0.06, 0.08 or 0.1. By optimizing the curvature of the first flow guide 3000, energy loss can be reduced and the air flow can be guided better.

[0055] In some embodiments, with the rotation axis of the fan 1000 (the rotation axis of the fan 1000 is the rotation axis of the centrifugal impeller 1200, seeFigure 2 The extending direction shown by the dashed line is the height direction. The highest point of the first flow guide member 3000 is higher than the highest point of the blades 1210 of the centrifugal impeller 1200, and the lowest point of the first flow guide member 3000 is lower than the lowest point of the blades 1210 of the centrifugal impeller 1200. It can be understood that if the highest point of the first flow guide member 3000 is lower than the highest point of the blades 1210 of the centrifugal impeller 1200, then a part of the air flow ejected by the blades 1210 of the centrifugal impeller 1200 is higher than the first flow guide member 3000, and the first flow guide member 3000 cannot receive and guide this part of the air flow. The same is true if the lowest point of the first flow guide member 3000 is higher than the lowest point of the blades 1210 of the centrifugal impeller 1200. In this embodiment, through the cooperation of the first flow guide member 3000 and the blades 1210 of the centrifugal impeller 1200, the air flow receiving capacity of the first flow guide member 3000 is increased, and to a certain extent, the flow-away of the air flow higher than the first flow guide member 3000 or lower than the first flow guide member 3000 is reduced, further improving the flow guiding effect of the first flow guide member 3000, and the diffusion distribution of the air flow is more uniform.

[0056] Combined with Figures 7 to 11 As shown, in some embodiments, the hot air device 100 further includes a second flow guide member 4000. The second flow guide member 4000 is arranged in the air outlet direction of the blower 1000 and is located upstream of the heater 2000. As described above, in the air outlet direction, that is, the air flow needs to contact the second flow guide member 4000 and flow through the first flow guide member 3000, and upstream means that the air flow first flows through the second flow guide member 4000 and then through the heater 2000. The second flow guide member 4000 is located in the second space 5200. The second flow guide member 4000 has a second upstream end 4100 and a second downstream end 4200. The so-called second upstream end 4100 is the part of the second flow guide member 4000 that first contacts the air flow, and the second downstream end 4200 is the part where the air flow detaches from the second flow guide member 4000. Or it can be understood that the second upstream end 4100 is the part of the second flow guide member 4000 closest to the centrifugal impeller 1200, and the second downstream end 4200 is the part of the second flow guide member 4000 farthest from the centrifugal impeller 1200. The second flow guide member 4000 extends from the second upstream end 4100 towards the heater 2000 and away from the first space 5100. Projected along the first direction, at least part of the projection of the second flow guide member 4000 coincides with at least part of the projection of the volute tongue 1120, that is, the second flow guide member 4000 is arranged at the air outlet 1102.

[0057] As can be seen from the above, through the action of the first guide member 3000, a part of the airflow close to the first side plate 1110 can be guided toward the second space 5200, but this will cause backflow at the position where the volute tongue 1120 is located to form a vortex. For this reason, in the present embodiment, the second guide member 4000 extends from the second upstream end 4100 toward the heater 2000 and back to the first space 5100, and is projected along the first direction. At least part of the projection of the second guide member 4000 overlaps with at least part of the projection of the volute tongue 1120. Through the guiding effect of the second guide member 4000, the generation of backflow at the volute tongue 1120 is avoided as much as possible, thereby eliminating the vortex at the volute tongue 1120 to a certain extent and reducing energy loss.

[0058] Based on the existing hot air device 100, the improvement can be achieved by additionally adding a first guide member 3000 and a second guide member 4000, and uniform distribution of airflow can be achieved without improving the structure of the fan 1000 itself. The heater 2000 achieves more uniform heating of the airflow. When the hot air device 100 of this embodiment is applied to a dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0059] The second guide member 4000 may be a planar structure or an arc-shaped structure. Compared with the planar structure, the arc-shaped structure guides the airflow more effectively, and the flow of the airflow is smoother, which helps to reduce energy loss.

[0060] The direction of the first side plate 1110 toward the volute tongue 1120 is the third direction, and the second guide member 4000 is convexly arranged along the third direction. Since the second guide member 4000 extends from the second upstream end 4100 toward the heater 2000 and away from the first space 5100, the second guide member 4000 is convexly arranged along the third direction, so that the tangent direction (see Figure 10 The tangent line 6000 of the second downstream end 4200 points to the heater 2000, so that the airflow guided by the second guide member 4000 and the airflow guided by the first guide member 3000 merge and flow toward the heater 2000, reducing the impact of the diffused airflow on the air duct wall, further reducing the resistance, and being more conducive to the uniform distribution of the airflow. In particular, when the heater 2000 has a flow channel 2100 for the airflow to pass through, the tangent direction of the second downstream end 4200 and the extension direction of the flow channel 2100 of the heater 2000 can be designed to be in the same direction, further reducing the flow resistance.

[0061] Optionally, the curvature of the second guide member 4000 is 0.01-0.1, for example, the curvature of the second guide member 4000 is 0.01, 0.04, 0.06, 0.08 or 0.1. By optimizing the curvature of the second guide member 4000, energy loss is reduced and better airflow guidance is achieved.

[0062] In some embodiments, with the extending direction of the rotation axis of the blower 1000 as the height direction, the highest point of the second flow guide member 4000 is higher than the highest point of the blades 1210 of the centrifugal impeller 1200, and the lowest point of the second flow guide member 4000 is lower than the lowest point of the blades 1210 of the centrifugal impeller 1200. It can be understood that if the highest point of the second flow guide member 4000 is lower than the highest point of the blades 1210 of the centrifugal impeller 1200, then a part of the air flow thrown out by the blades 1210 of the centrifugal impeller 1200 is higher than the second flow guide member 4000, and the second flow guide member 4000 cannot receive and guide this part of the air flow. The same is true if the lowest point of the second flow guide member 4000 is higher than the lowest point of the blades 1210 of the centrifugal impeller 1200. In this embodiment, through the cooperation between the second flow guide member 4000 and the blades 1210 of the centrifugal impeller 1200, the reception of the air flow by the second flow guide member 4000 is increased, and to a certain extent, the flow-away of the air flow higher than the second flow guide member 4000 or lower than the second flow guide member 4000 is reduced, which is beneficial to improving the flow guiding effect of the second flow guide member 4000, making the distribution of the air flow more uniform, and at the same time can further reduce the backflow at the volute tongue 1120 and reduce the flow resistance.

[0063] Optionally, in some embodiments, the distance between the first flow guide member 3000 and the second flow guide member 4000 in the first direction is 10 mm to 20 mm. As shown in Figure 10 the distance between the first flow guide member 3000 and the second flow guide member 4000 in the first direction is M, and M is 10 mm, 12 mm, 15 mm, 18 mm or 20 mm. The length of the first flow guide member 3000 is 10 mm to 30 mm, and the length of the second flow guide member 4000 is 10 mm to 300 mm. By setting like this, both the requirement for uniform air flow distribution can be met, and most of the existing blowers 1000 applied to dishwashers can be matched.

[0064] The second aspect of the present application discloses a dishwasher. In some embodiments, the dishwasher includes the above-mentioned hot air device 100. The hot air device 100 includes a fan 1000, a heater 2000, and a first deflector 3000. The fan 1000 includes a volute 1100 and a centrifugal impeller 1200. The centrifugal impeller 1200 is disposed inside the volute 1100. The volute 1100 includes a first side plate 1110 and a volute tongue 1120. The first side plate 1110 and the volute tongue 1120 are relatively and alternately arranged. The volute 1100 is provided with an air outlet 1102 between the first side plate 1110 and the volute tongue 1120. The direction in which the first side plate 1110 and the volute tongue 1120 face each other is the first direction. A first virtual plane 5000 perpendicular to the first direction is made through the center of the air outlet 1102. One side of the first virtual plane 5000 is a first space 5100, and the other side is a second space 5200. The first side plate 1110 is located in the first space 5100, and the volute tongue 1120 is located in the second space 5200. The heater 2000 is disposed in the air outlet direction of the fan 1000. The first deflector 3000 is disposed in the air outlet direction of the fan 1000 and is located upstream of the heater 2000. The first deflector 3000 has a first upstream end 3100. The first upstream end 3100 is located in the first space 5100 and is alternately arranged with the first side plate 1110 along the first direction. The first deflector 3000 extends from the first upstream end 3100 towards the heater 2000 and towards the second space 5200.

[0065] The structure of the dishwasher will be briefly described below. Generally speaking, the dishwasher includes an inner container, a dish basket, a water cup device, a spraying device, a drainage device, and a circulation device.

[0066] The inner container forms a washing cavity (i.e., the inner space of the inner container) and an opening communicating with the washing cavity. The door body of the dishwasher can move between an open position and a closed position. When the door body moves to the closed position, it closes the opening. When the door body moves to the open position, it opens the opening. Generally speaking, the door body is designed to rotate from top to bottom to open the opening and rotate from bottom to top to close the opening.

[0067] The dish basket is installed in the inner container and can slide in and out of the washing cavity, so as to facilitate loading and unloading of tableware. The dish basket is usually a hollow structure to facilitate water flow through to wash the tableware. The so-called tableware should be understood as items that can be cleaned by the dishwasher, including but not limited to bowls, plates, cups, pots, knives, forks, and chopsticks.

[0068] The spraying device is used to spray water flow towards the washing cavity, and the water flow shoots towards the tableware to wash and clean the tableware. That is, during the washing cycle of the dishwasher, it is necessary to spray water flow through the spraying device to achieve the cleaning of the tableware. There are various types of spraying devices. The spraying device can be movable and move while spraying water flow to strengthen the flushing of the tableware. The spraying device can also be stationary and spray water flow at a fixed angle. Optionally, the spraying device includes a spray arm, and water flow is sprayed through the spray arm. The number of spray arms can be one, two, three or more. For example, in the direction from top to bottom, the spray arms include an upper spray arm and a lower spray arm, or can also include an upper spray arm, a middle spray arm and a lower spray arm. The spray arms can rotate synchronously when spraying water flow. Optionally, the spraying device includes fixed nozzles that spray water flow at a specific angle.

[0069] The spraying of water flow by the spraying device needs to be achieved through the operation of the circulation device. The circulation device is a key component for realizing the washing cycle. Generally, the circulation device is a circulation pump, also known as a washing pump. The circulation device is connected to the water cup device. The water cup device is arranged at the bottom of the inner container for temporarily receiving and storing water. The circulation device sucks the water in the water cup device and transports it to the spraying device. The water flow sprays out from the spraying device and flushes the tableware, then falls back to the bottom of the inner container and then flows back into the water cup device, and continues to be sucked by the circulation device, so as to form a washing cycle to achieve the flushing and cleaning of the tableware.

[0070] After the washing cycle of the dishwasher ends, it is necessary to drain the water out. Draining the water out needs to be achieved through the operation of the drainage device. Generally, the drainage device is a drainage pump. The drainage device is connected to the water cup device. When the drainage device is started, it drains the water in the water cup device out and discharges it to the municipal pipeline through the drainage pipe.

[0071] After draining the water, it is necessary to dry the tableware. In this embodiment, the drying of the tableware is achieved through the hot air device 100. The hot air device 100 is communicated with the outside. It sucks the air outside and heats it to form hot air and sends it into the inner container. The inner container is provided with an air outlet. The hot air entering the inner container carries moisture and is discharged from the air outlet, so as to form the drying of the tableware. Since the hot air device 100 of this embodiment can make the heating of the air flow more uniform by setting the first guide member 3000 or the cooperation of the first guide member 3000 and the second guide member 4000, which helps to improve the drying effect of the dishwasher and optimize the drying energy consumption. The hot air device 100 of the dishwasher in this embodiment adopts the technical solution of the above embodiment, so it has at least the beneficial effects brought by the technical solution of the above embodiment, and will not be repeated here.

[0072] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A hot air device (100), characterized in that: include: A fan (1000), the fan (1000) comprising a volute (1100) and a centrifugal impeller (1200) arranged inside the volute (1100), the volute (1100) comprising a first side plate (1110) and a volute tongue (1120) arranged opposite to the first side plate (1110), the volute (1100) being provided with an air outlet (1102) between the first side plate (1110) and the volute tongue (1120), the first side plate (1110) The direction between the first side plate (1110) and the volute tongue (1120) is a first direction, a first virtual plane (5000) perpendicular to the first direction is made through the center of the air outlet (1102), one side of the first virtual plane (5000) is a first space (5100), and the other side is a second space (5200), the first side plate (1110) is located in the first space (5100), and the volute tongue (1120) is located in the second space (5200); a heater (2000), arranged in the air outlet direction of the fan (1000); and The first flow guide (3000) is arranged in the air outlet direction of the fan (1000) and is located upstream of the heater (2000). The first flow guide (3000) has a first upstream end (3100). The first upstream end (3100) is located in the first space (5100) and is arranged alternately with the first side plate (1110) along the first direction. The first flow guide (3000) extends from the first upstream end (3100) toward the heater (2000) and toward the second space (5200).

2. The hot air device (100) according to claim 1, characterized in that: The first flow guide (3000) also has a first downstream end (3200), and the first downstream end (3200) is located in the second space (5200) and is arranged alternately with the volute tongue (1120) along the first direction.

3. The hot air device (100) according to claim 1, characterized in that: The first flow guide (3000) is a planar structure.

4. The hot air device (100) according to claim 1, characterized in that: The first flow guide (3000) is an arc-shaped structure, the direction of the volute tongue (1120) toward the first side plate (1110) is a second direction, and the first flow guide (3000) is protruding along the second direction.

5. The hot air device (100) according to claim 4, characterized in that: The curvature of the first flow guide (3000) is 0.01-0.

1.

6. The hot air device (100) according to claim 1, characterized in that: Taking the extension direction of the rotation axis of the fan (1000) as the height direction, the highest point of the first flow guide (3000) is higher than the highest point of the blade (1210) of the centrifugal impeller (1200), and the lowest point of the first flow guide (3000) is lower than the lowest point of the blade (1210) of the centrifugal impeller (1200).

7. The hot air device (100) according to claim 1, characterized in that: The first air guide (3000) is arranged at the air outlet (1102).

8. The hot air device (100) according to any one of claims 1 to 7, characterized in that: The hot air device (100) further comprises a second flow guide (4000) arranged in the air outlet direction of the fan (1000) and located upstream of the heater (2000); the second flow guide (4000) is located in the second space (5200); the second flow guide (4000) has a second upstream end (4100); the second flow guide (4000) extends from the second upstream end (4100) toward the heater (2000) and away from the first space (5100); and when projected along the first direction, at least part of the projection of the second flow guide (4000) overlaps with at least part of the projection of the volute tongue (1120).

9. The hot air device (100) according to claim 8, characterized in that: The second flow guide (4000) is a planar structure.

10. The hot air device (100) according to claim 8, characterized in that: The second flow guide member (4000) is an arc-shaped structure, the direction of the first side plate (1110) toward the volute tongue (1120) is a third direction, and the second flow guide member (4000) is protruding along the third direction.

11. The hot air device (100) according to claim 10, characterized in that: The curvature of the second flow guide (4000) is 0.01 to 0.1; And / or, the heater (2000) has a flow channel (2100) suitable for air flow to pass through, and the second flow guide (4000) has a second downstream end (4200), and the tangent direction of the second downstream end (4200) is the same as the extension direction of the flow channel (2100) of the heater (2000).

12. The hot air device (100) according to claim 8, characterized in that: Taking the extension direction of the rotation axis of the fan (1000) as the height direction, the highest point of the second flow guide (4000) is higher than the highest point of the blade (1210) of the centrifugal impeller (1200), and the lowest point of the second flow guide (4000) is lower than the lowest point of the blade (1210) of the centrifugal impeller (1200).

13. The hot air device (100) according to claim 8, characterized in that: Along the first direction, the distance between the first flow guide (3000) and the second flow guide (4000) is 10 mm to 20 mm; And / or, the length of the first flow guide (3000) is 10 mm to 30 mm; And / or, the length of the second flow guide (4000) is 10 mm to 30 mm.

14. A dishwasher, characterized in that: It comprises the hot air device (100) according to any one of claims 1 to 13.

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