Fan assembly, hot air device and dish washing machine

Abstract

The fan assembly comprises a fan and a flow guide rib, the fan comprises a volute and an impeller arranged in the volute, the volute is provided with an air inlet, and the flow guide rib is arranged on the side, where the air inlet is located, of the volute and makes projection in the extending direction of the rotating axis of the fan. At least part of the projection of the flow guide rib coincides with part of the projection of the air inlet. The flow guide rib is arranged on the side, where the air inlet is located, of the volute, projection is conducted in the extending direction of the rotating axis of the draught fan, at least part of the projection of the flow guide rib coincides with part of the projection of the air inlet, the flow guide rib can guide airflow flowing through the flow guide rib and flowing into the air inlet, vortex generation at the air inlet is restrained to a certain degree, and therefore the air inlet can be prevented from being damaged. When the heater is applied to the dish-washing machine, the drying effect of the dish-washing machine can be improved, and the drying energy consumption can be optimized.

Description

Technical Field

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

[0002] Some dishwashers are configured with a hot air drying system. The drying of tableware is achieved 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, and the heater heats the air flow passing through it to form hot air. The current flow channel structure design of the hot air drying system is unreasonable, prone to generating vortices, resulting in additional flow resistance, and affecting the drying effect and drying energy consumption of the dishwasher. Summary of the Invention

[0003] The present application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the present application provides a fan assembly.

[0004] To achieve the above object, the present application discloses a fan assembly, which includes:

[0005] A fan, the fan includes a volute and an impeller disposed inside the volute, and the volute is provided with an air inlet; and

[0006] A guide rib, disposed on one side where the air inlet of the volute is located. When projected along the extension direction of the rotation axis of the fan, at least a part of the projection of the guide rib coincides with a part of the projection of the air inlet.

[0007] In some embodiments of the present application, when projected along the extension direction of the rotation axis of the fan, a part of the projection of the guide rib coincides with a part of the projection of the air inlet, and a part of the projection of the guide rib coincides with a part of the projection of the volute.

[0008] In some embodiments of the present application, the impeller is a centrifugal impeller.

[0009] In some embodiments of the present application, along the extension direction of the rotation axis of the fan, at least a part of the impeller is exposed at the air inlet.

[0010] In some embodiments of the present application, the impeller includes a central part and blades disposed on the central part. The number of the blades is multiple, and the multiple blades surround the central part. When projected along the extension direction of the rotation axis of the fan, a part of the projection of the guide rib coincides with a part of the projection of the volute, a part of the projection of the guide rib coincides with at least a part of the projection of the blades, and a part of the projection of the guide rib coincides with a part of the projection of the central part.

[0011] In some embodiments of the present application, the volute is provided with an air outlet. One side of the volute at the air outlet is a first side plate, and the other side is a volute tongue. The directions in which the first side plate and the volute tongue face each other are the first direction. A first virtual plane perpendicular to the first direction is made passing through the rotation axis of the fan, and a second virtual plane perpendicular to the first virtual plane is made passing through the rotation axis of the fan. The first virtual plane and the second virtual plane intersect to form a first right-angle space. The first side plate is located in the first right-angle space, and at least a part of the flow guiding rib is located in the first right-angle space.

[0012] In some embodiments of the present application, the flow guiding rib is tapered along the direction from the end facing away from the fan to the end facing the fan.

[0013] In some embodiments of the present application, the opposite sides of the flow guiding rib are arcuately concave along the circumferential direction of the rotation axis of the fan.

[0014] In some embodiments of the present application, the ratio between the width of the end of the flow guiding rib facing away from the fan and the width of the end of the flow guiding rib facing the fan is greater than 4.

[0015] In some embodiments of the present application, along the extending direction of the rotation axis of the fan, the distance between the flow guiding rib and the volute is not greater than 1 mm.

[0016] In some embodiments of the present application, the flow guiding rib extends along the radial direction of the fan, and the radial direction of the fan is perpendicular to the extending direction of the rotation axis of the fan.

[0017] In some embodiments of the present application, the length of the flow guiding rib along the radial direction of the fan is greater than 15 mm.

[0018] A second aspect of the present application discloses a hot air device, which includes a heater and the above-mentioned fan assembly, and the heater is adapted to heat the air flow driven by the fan assembly.

[0019] A third aspect of the present application discloses a dishwasher, which includes the above-mentioned hot air device.

[0020] In some embodiments of the present application, the dishwasher includes a housing and an inner container provided inside the housing, and the hot air device is provided between the housing and the inner container;

[0021] The air inlet faces the housing and the distance between the flow guiding rib and the housing is less than 1 mm; or, the air inlet faces the inner container and the distance between the flow guiding rib and the inner container is less than 1 mm.

[0022] The technical solution of the present application is to provide a guide rib on one side where the air inlet of the volute is located. When projected along the extension direction of the rotation axis of the fan, at least part of the projection of the guide rib coincides with part of the projection of the air inlet. The guide rib can guide the air flow flowing through the guide rib and into the air inlet, suppress the generation of vortices at the air inlet to a certain extent, make the air flow more smooth, reduce the air flow resistance, increase the air volume, and when combined with a heater and applied to a dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0023] Other advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Brief Description of the Drawings

[0024] 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 use in 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.

[0025] Figure 1 Schematic diagram of the hot air device in some embodiments;

[0026] Figure 2 Schematic diagram of the fan assembly in some embodiments;

[0027] Figure 3 Another perspective schematic diagram of the fan assembly in some embodiments;

[0028] Figure 4 Top view of the fan assembly in some embodiments;

[0029] Figure 5 Cross-sectional view of the fan assembly in some embodiments;

[0030] Figure 6 Schematic diagram of the cooperation between the hot air device and the outer shell of the dishwasher when the hot air device is installed in the dishwasher in some embodiments.

[0031] Explanation of the reference numerals in the drawings:

[0032] Hot air device 100, fan assembly 1000, fan 1100, volute 1110, air inlet 1111, air outlet 1112, first side plate 1113, volute tongue 1114, impeller 1120, central part 1121, blade 1122, guide rib 1200, heater 2000, first virtual plane 3100, second virtual plane 3200, first right-angled space 3300, rotation axis 4100, outer shell 210.

[0033] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0035] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In the present application, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. shall 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 it 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 the present application can be understood according to specific situations.

[0037] In addition, in the present application, the descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can 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 is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0038] The first aspect of the present application discloses a fan assembly 1000, in combination with Figures 1 to 3As shown, in some embodiments, the fan assembly 1000 includes a fan 1100 and a guide rib 1200. The fan 1100 includes a volute 1110 and an impeller 1120. The impeller 1120 is disposed inside the volute 1110. The volute 1110 is provided with an air inlet 1111. The guide rib 1200 is disposed on the side where the air inlet 1111 of the volute 1110 is located. When projected along the extending direction of the rotation axis 4100 of the fan 1100, at least a part of the projection of the guide rib 1200 coincides with a part of the projection of the air inlet 1111.

[0039] By providing the guide rib 1200 on the side where the air inlet 1111 of the volute 1110 is located, when projected along the extending direction of the rotation axis 4100 of the fan 1100, at least a part of the projection of the guide rib 1200 coincides with a part of the projection of the air inlet 1111. The guide rib 1200 can guide the air flow flowing through the guide rib 1200 and flowing into the air inlet 1111, suppress the generation of vortices at the air inlet 1111 to a certain extent, make the air flow more smooth, reduce the air flow resistance, increase the air volume, and when combined with the heater 2000 and applied to the dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0040] Specifically, the fan 1100 is a fluid machine for driving the air flow. Generally speaking, the fan 1100 includes a volute 1110 and an impeller 1120. The volute 1110 is provided with an air inlet 1111 and an air outlet 1112. The impeller 1120 is disposed inside the volute 1110 and is located between the air inlet 1111 and the air outlet 1112. The impeller 1120 can rotate inside the volute 1110 to drive the air flow. The volute 1110 is generally in the shape of a snail shell. The main function of the volute 1110 is to collect the gas thrown out by the impeller 1120 and guide it to the air outlet 1112 for discharge. It can be understood that the rotation of the impeller 1120 needs to be realized by the drive of a drive mechanism. For example, the fan 1100 also has a motor for driving the impeller 1120 to rotate, and the motor is connected to the impeller 1120 to drive the impeller 1120 to rotate.

[0041] In the following, the impeller 1120 is taken as a centrifugal impeller for illustration. During the process of the fan 1100 driving the air flow, vortices are likely to form at the air inlet 1111. The generation of vortices will increase the energy loss and generate abnormal vibrations and noises. Therefore, in this embodiment, the foregoing problems are solved to a certain extent by providing the guide rib 1200.

[0042] The guide rib 1200 is disposed on the side where the air inlet 1111 of the volute 1110 is located so as to Figure 5With the shown orientation as a reference, the air inlet 1111 is provided on the upper side of the volute 1110. When the fan 1100 is operating, air flows into the interior of the fan 1100 from above the fan 1100. The flow guiding ribs 1200 are provided above the fan 1100 (i.e., the flow guiding ribs 1200 are arranged on the side of the volute 1110 where the air inlet 1111 is provided). During the process of air flowing into the interior of the fan 1100, the air will flow through the flow guiding ribs 1200. By arranging the flow guiding ribs 1200, the flow guiding ribs 1200 can exert a certain flow guiding effect on the air, and to a certain extent, inhibit the formation of vortices at the air inlet 1111, thus making the flow of air smoother. Based on the existing fan 1100, the flow guiding ribs 1200 can be additionally added to improve the fan 1100, and without making too much improvement to the structure of the fan 1100 itself, the energy loss of the air flow can be reduced, the flow resistance of the air flow can be optimized, and the air volume can be increased. When applying the fan assembly 1000 of this embodiment to a dishwasher, it helps to improve the drying effect of the dishwasher and optimize the drying energy consumption.

[0043] Project along the extension direction of the rotation axis 4100 of the fan 1100 ( Figure 5 and Figure 6 the up-and-down direction is the extension direction of the rotation axis 4100 of the fan 1100), at least part of the projection of the flow guiding ribs 1200 coincides with part of the projection of the air inlet 1111. Specifically, the extension direction of the rotation axis 4100 of the fan 1100 is the extension direction of the rotation axis of the impeller 1120. Since the air flows into the interior of the volute 1110 through the air inlet 1111, vortices are more likely to form at the position corresponding to the air inlet 1111. Therefore, in this embodiment, at least part of the projection of the flow guiding ribs 1200 coincides with part of the projection of the air inlet 1111, so that the air flow that is about to form vortices can be more effectively guided, thereby further inhibiting the formation of vortices.

[0044] Based on the fact that at least part of the projection of the flow guiding ribs 1200 coincides with part of the projection of the air inlet 1111, combined with Figures 2 to 4As shown, in some embodiments, a projection is made along the extension direction of the rotation axis 4100 of the blower 1100. A part of the projection of the guide rib 1200 coincides with a part of the projection of the volute 1110. That is, in this embodiment, a projection is made along the extension direction of the rotation axis 4100 of the blower 1100. A part of the projection of the guide rib 1200 coincides with a part of the projection of the air inlet 1111, and a part of the projection of the guide rib 1200 coincides with a part of the projection of the volute 1110. When air enters, the range of the vortex can cover not only the position corresponding to the air inlet 1111 but also the position corresponding to the volute 1110. By the coincidence of a part of the projection of the guide rib 1200 and a part of the projection of the volute 1110, the air flow can be guided more effectively, and the formation of the vortex can be further suppressed. In particular, when the air inlet 1111 is close to an obstacle (such as when applied to a dishwasher, the air inlet 1111 faces the outer shell or the inner liner), such a setting of the guide rib 1200 is more conducive to guiding the air flow.

[0045] Combined with Figures 2 to 4 As shown, in some embodiments, along the extension direction of the rotation axis 4100 of the blower 1100, at least a part of the impeller 1120 is exposed at the air inlet 1111. That is, when observing the air inlet 1111 along the extension direction of the rotation axis 4100 of the blower 1100, at least a part of the impeller 1120 can be seen. The flow of the air is driven by the rotation of the impeller 1120 inside the volute 1110, and the air enters the inside of the volute 1110 through the air inlet 1111. By the exposure of at least a part of the impeller 1120 at the air inlet 1111, the flow path of the air from entering the inside of the volute 1110 through the air inlet 1111 until contacting the impeller 1120 is shortened, which is beneficial to reducing the flow resistance of the air. Since at least a part of the projection of the guide rib 1200 along the extension direction of the rotation axis 4100 of the blower 1100 coincides with a part of the projection of the air inlet 1111, on this basis, at least a part of the projection of the guide rib 1200 along the extension direction of the rotation axis 4100 of the blower 1100 coincides with a part of the projection of the impeller 1120. The air flow guided by the guide rib 1200 will contact the impeller 1120 more quickly and be thrown away by the impeller 1120, and the re-organization of the vortex after the air flow passes through the guide rib 1200 can be avoided to a certain extent.

[0046] Optionally, combined with Figures 2 to 5As shown, in some embodiments, the impeller 1120 includes a central portion 1121 and blades 1122 provided on the central portion 1121. The number of the blades 1122 is plural, and the plural blades 1122 are arranged around the central portion 1121. When projected along the extending direction of the rotation axis 4100 of the blower 1100, a part of the projection of the flow guiding rib 1200 coincides with a part of the projection of the volute 1110, at least a part of the projection of the flow guiding rib 1200 coincides with a part of the projection of the blades 1122, and a part of the projection of the flow guiding rib 1200 coincides with a part of the projection of the central portion 1121.

[0047] Specifically, the central portion 1121 of the impeller 1120 is used to be connected to the motor so that the impeller 1120 can be driven to rotate by the motor. Generally, the impeller 1120 and the central portion 1121 are prepared by integral molding, or the impeller 1120 and the central portion 1121 are fixed by ultrasonic welding. Some airflows need to change direction when flowing through the volute 1110 to enter the air inlet 1111, and some airflows also need to change direction when entering the air inlet 1111 and encountering the central portion 1121 to be ejected by the blades 1122. A relatively large vortex range can be formed on the side of the blower 1100 where the air inlet 1111 is provided during the process that the airflows enter the volute 1110 through the air inlet 1111. Therefore, in this embodiment, the coverage range of the projection of the flow guiding rib 1200 involves the volute 1110, the impeller 1120 and the central portion 1121. For example, the projection of the flow guiding rib 1200 along the extending direction of the rotation axis 4100 of the blower 1100 is divided into three parts. The first part coincides with a part of the projection of the volute 1110, the second part coincides with at least a part of the projection of the impeller 1120, and the third part coincides with a part of the projection of the central portion 1121. In this way, the flow guiding rib 1200 has a certain length and a relatively large span range, preventing the airflows from bypassing the flow guiding rib 1200 to form vortices to a certain extent and further suppressing the formation of vortices.

[0048] Combined with Figures 1 to 5As shown, in some embodiments, on one side of the air outlet 1112 of the volute 1110 is the first side plate 1113, and on the other side of the air outlet 1112 is the volute tongue 1114. The directions in which the first side plate 1113 and the volute tongue 1114 face each other are the first direction. A first virtual plane 3100 perpendicular to the first direction is made passing through the rotation axis 4100 of the fan 1100, and a second virtual plane 3200 perpendicular to the first virtual plane 3100 is made passing through the rotation axis 4100 of the fan 1100. The first virtual plane 3100 and the second virtual plane 3200 intersect to form a first right-angle space 3300. The first side plate 1113 is located in the first right-angle space 3300, and at least part of the flow guide rib 1200 is located in the first right-angle space 3300. The inventor found that the air flow velocity at the air inlet 1111 located in the first right-angle space 3300 is greater, and it is easier to form vortices, and the vortices are relatively more serious. By arranging at least part of the flow guide rib 1200 (for example, one-half of the flow guide rib 1200, two-thirds of the flow guide rib 1200, or all of the flow guide rib 1200) in the first right-angle space 3300, the air flow is guided, the formation of vortices here is broken, and it is more beneficial to the smooth flow of the overall air flow at the air inlet 1111.

[0049] Combined with Figures 1 to 5 As shown, in some embodiments, along the direction from the end of the flow guide rib 1200 facing away from the fan 1100 to the end of the flow guide rib 1200 facing the fan 1100, the flow guide rib 1200 is tapered. See Figure 5 and Figure 6 In the orientation of and , in the top-down direction, the flow guide rib 1200 is tapered, which is more convenient for guiding the air flow flowing through the flow guide rib 1200 to turn and flow into the air inlet 1111, further suppressing the generation of vortices, and the air flow is more smooth.

[0050] Specifically, taking the application of the fan assembly 1000 to a dishwasher as an example, the dishwasher includes an inner container and an outer shell (210). The inner container is arranged inside the outer shell (210). The air inlet 1111 faces the inner container or the outer shell (210) and is open. For example, the air inlet 1111 faces the outer shell (210) and is open. When the air inlet 1111 is relatively close to or in contact with the outer shell (210), some air flows roughly radially to the position where the air inlet 1111 is located and then turns to flow into the air inlet 1111. Through the arrangement of the flow guide rib 1200, when the air flow passes through the flow guide rib 1200, since the flow guide rib 1200 is tapered towards the fan 1100, the flow guide rib 1200 can guide the air flow towards the air inlet 1111, and the air flow is more likely to turn and enter the air inlet 1111 under the action of the flow guide rib 1200, which is more helpful for suppressing the generation of vortices.

[0051] Optionally, along the circumference of the rotation axis 4100 of the fan 1100, the opposite sides of the guide rib 1200 are arc-shaped and concave, so that the cross-section of the guide rib 1200 is similar to a curved trapezoid. The two sides of the arc-shaped concave will be more conducive to guiding the air, avoiding the generation of vortices on the two sides of the guide rib 1200 when the airflow flows along the two sides of the arc-shaped concave, so that the airflow can flow smoothly into the air inlet 1111.

[0052] Optionally, the ratio of the width of the end of the guide rib 1200 facing away from the fan 1100 to the width of the end of the guide rib 1200 facing the fan 1100 is greater than 4, see Figure 6 As shown, the width of the end of the guide rib 1200 facing away from the fan 1100 is W1, and the width of the end of the guide rib 1200 facing the fan 1100 is W2. The ratio of W1 to W2 is greater than 4, so that the opposite sides of the guide rib 1200 have sufficient curvature to guide the airflow, further improving the wind guiding effect.

[0053] In some embodiments, along the extension direction of the rotation axis 4100 of the fan 1100, the distance between the guide rib 1200 and the volute 1110 is no more than 1 mm. By such a configuration, the formation of vortices between the guide rib 1200 and the fan 1100 can be prevented as much as possible. Optionally, the guide rib 1200 can be attached to the volute 1110, for example, the guide rib 1200 is attached to the volute 1110 by bonding so as to be fixed to the fan 1100. Of course, the guide rib 1200 can also be attached to the volute 1110 by other means so as to be fixed to the fan 1100.

[0054] Combination Figures 2 to 4 As shown, in some embodiments, the guide ribs 1200 extend in the radial direction of the fan 1100, and the radial direction of the fan 1100 is perpendicular to the extension direction of the rotation axis 4100 of the fan 1100. Specifically, a vortex is basically a state of motion in which the airflow rotates around a certain axis, and the axis of the vortex at the air inlet 1111 is basically in the same direction as the extension direction of the rotation axis 4100 of the fan 1100. In this embodiment, the radial direction of the fan 1100 is perpendicular to the extension direction of the rotation axis 4100 of the fan 1100, and the guide ribs 1200 extend in the radial direction of the fan 1100. The guide ribs 1200 can guide the airflow to flow roughly radially and then guide the airflow to turn and enter the air inlet 1111, which is conducive to breaking the conditions for the formation of the vortex and achieving better flow guidance. Optionally, in combination with Figure 4 As shown, in some embodiments, the length of the guide rib 1200 along the radial direction of the fan 1100 is greater than 15 mm. For example, the length L1 of the guide rib 1200 is 15 mm to 25 mm, which can be 15 mm, 18 mm, 20 mm, 23 mm or 25 mm. By setting it in this way, it can match most of the existing fans 1100 used in dishwashers.

[0055] The second aspect of the present application discloses a hot air device 100. As shown in combination with Figures 1 to 5 In some embodiments, the hot air device 100 includes a heater 2000 and the fan assembly 1000 of the above embodiments. The fan assembly 1000 includes a fan 1100 and a guide rib 1200. The fan 1100 includes a volute 1110 and an impeller 1120. The impeller 1120 is disposed inside the volute 1110. The volute 1110 is provided with an air inlet 1111. The guide rib 1200 is disposed on one side where the air inlet 1111 of the volute 1110 is located. When projected along the extending direction of the rotation axis 4100 of the fan 1100, at least a part of the projection of the guide rib 1200 coincides with a part of the projection of the air inlet 1111. By providing the guide rib 1200 on one side where the air inlet 1111 of the volute 1110 is located, and when projected along the extending direction of the rotation axis 4100 of the fan 1100, at least a part of the projection of the guide rib 1200 coincides with a part of the projection of the air inlet 1111, the guide rib 1200 can guide the air flow flowing through the guide rib 1200 and flowing into the air inlet 1111, suppress the generation of vortices at the air inlet 1111 to a certain extent, make the air flow more smooth, reduce the air flow resistance, increase the air volume, and 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.

[0056] The third aspect of the present application discloses a dishwasher. In some embodiments, the dishwasher includes the above hot air device 100.

[0057] The structure of the dishwasher will be briefly described below. Generally speaking, the dishwasher includes an inner container, a bowl basket, a water cup device, a spraying device, a drainage device, and a circulation device.

[0058] The inner container forms a washing cavity (i.e., the internal 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, and 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.

[0059] The bowl basket is installed in the inner container and can slide in and out of the washing cavity to facilitate loading and unloading of tableware. The bowl 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.

[0060] The spraying device is used to spray water flow towards the washing chamber, and the water flow hits 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.

[0061] 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 tank 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 tank 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.

[0062] After the washing cycle of the dishwasher ends, the water needs to be drained outwards. Draining the water outwards 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 outwards and discharges it to the municipal pipeline through the drainage pipe.

[0063] After draining, 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 connected to the outside. It sucks the outside air and heats it to form hot air and sends it into the inner tank. The inner tank is provided with an air outlet. The hot air entering the inner tank carries moisture and is discharged from the air outlet, so as to form the drying of the tableware. Since the fan assembly 1000 of this embodiment makes the air flow more smooth by setting the flow guiding ribs 1200, and the air flow resistance is smaller, this 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, which will not be repeated here.

[0064] Combined Figure 6 As shown in the figure, in some embodiments, the dishwasher includes a housing (210), the inner tank is arranged inside the housing (210), and the hot air device 100 is arranged between the housing (210) and the inner tank.

[0065] Optionally, the air inlet 1111 of the hot air device 100 faces the outer shell (210) and is open. The distance between the flow guiding ribs 1200 and the outer shell (210) is less than 1 mm. Since the distance between the flow guiding ribs 1200 and the volute 1110 is also less than 1 mm, in this case, the effect of suppressing the formation of vortices can be maximally improved, which is more conducive to reducing the loss of air flow energy.

[0066] In addition to facing the outer shell (210) and being open, in some cases, the air inlet 1111 of the hot air device 100 can also face the inner liner and is open. The distance between the flow guiding ribs 1200 and the inner liner is less than 1 mm. Since the distance between the flow guiding ribs 1200 and the volute 1110 is also less than 1 mm, in this case, the effect of suppressing the formation of vortices can be maximally improved, which is more conducive to reducing the loss of air flow energy.

[0067] 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 fan assembly (1000), characterized in that: include: A fan (1100), the fan (1100) comprising a volute (1110) and an impeller (1120) disposed inside the volute (1110), the volute (1110) being provided with an air inlet (1111); and The guide rib (1200) is arranged on a side of the volute (1110) where the air inlet (1111) is located, and is projected along the extension direction of the rotation axis (4100) of the fan (1100), and at least a portion of the projection of the guide rib (1200) overlaps with a portion of the projection of the air inlet (1111).

2. The fan assembly (1000) according to claim 1, characterized in that: Projected along the extension direction of the rotation axis (4100) of the fan (1100), the projected portion of the guide rib (1200) overlaps with the projected portion of the air inlet (1111), and the projected portion of the guide rib (1200) overlaps with the projected portion of the volute (1110); And / or, the impeller (1120) is an impeller (1120).

3. The fan assembly (1000) according to claim 1, characterized in that: Along the extension direction of the rotation axis (4100) of the fan (1100), at least a portion of the impeller (1120) is exposed at the air inlet (1111).

4. The fan assembly (1000) according to claim 3, characterized in that: The impeller (1120) includes a central portion (1121) and blades (1122) arranged at the central portion (1121), the number of the blades (1122) is multiple, the multiple blades (1122) surround the central portion (1121), and are projected along the extension direction of the rotation axis (4100) of the fan (1100), the projected portion of the guide rib (1200) overlaps with the projected portion of the volute (1110), the projected portion of the guide rib (1200) overlaps with at least a portion of the projection of the blades (1122), and the projected portion of the guide rib (1200) overlaps with the projected portion of the central portion (1121).

5. The fan assembly (1000) according to claim 1, characterized in that: The volute (1110) is provided with an air outlet (1112); the volute (1110) is provided with a first side plate (1113) on one side of the air outlet (1112); and is provided with a volute tongue (1114) on the other side of the air outlet (1112); the first side plate (1113) and the volute tongue (1114) are oriented in a first direction to each other; and a first virtual plane (3100) perpendicular to the first direction is formed through the rotation axis (4100) of the fan (1100). ), a second virtual plane (3200) perpendicular to the first virtual plane (3100) is made through the rotation axis (4100) of the fan (1100), the first virtual plane (3100) and the second virtual plane (3200) intersect to form a first right-angle space (3300), the first side panel (1113) is located in the first right-angle space (3300), and at least a part of the guide rib (1200) is located in the first right-angle space (3300).

6. The fan assembly (1000) according to claim 1, characterized in that: The guide rib (1200) is arranged to be gradually reduced along a direction from an end of the guide rib (1200) facing away from the fan (1100) toward an end of the guide rib (1200) facing the fan (1100).

7. The fan assembly (1000) according to claim 6, characterized in that: Along the circumferential direction of the rotation axis (4100) of the fan (1100), the opposite sides of the guide rib (1200) are arc-shaped and concave.

8. The fan assembly (1000) according to claim 7, characterized in that: The ratio between the width of the end of the guide rib (1200) facing away from the fan (1100) and the width of the end of the guide rib (1200) facing the fan (1100) is greater than 4.

9. The fan assembly (1000) according to claim 1, characterized in that: Along the extension direction of the rotation axis (4100) of the fan (1100), the distance between the guide rib (1200) and the volute (1110) is no more than 1 mm.

10. The fan assembly (1000) according to claim 1, characterized in that: The guide rib (1200) extends in a radial direction of the fan (1100), and the radial direction of the fan (1100) is perpendicular to an extension direction of a rotation axis (4100) of the fan (1100).

11. The fan assembly (1000) according to claim 10, characterized in that: The length of the guide rib (1200) along the radial direction of the fan (1100) is greater than 15 mm.

12. A hot air device (100), characterized in that: It comprises a heater (2000) and the fan assembly (1000) according to any one of claims 1 to 11, wherein the heater (2000) is suitable for heating the airflow driven by the fan assembly (1000).

13. A dishwasher, characterized in that: It comprises the hot air device (100) as claimed in claim 12.

14. The dishwasher according to claim 13, characterized in that The dishwasher comprises an outer shell (210) and an inner container arranged inside the outer shell (210), and the hot air device (100) is arranged between the outer shell (210) and the inner container; The air inlet (1111) is open toward the outer shell (210) and the distance between the guide rib (1200) and the outer shell (210) is less than 1 mm; or, the air inlet (1111) is open toward the inner shell and the distance between the guide rib (1200) and the inner shell is less than 1 mm.

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