Air duct structure and dish washing machine

Abstract

The utility model provides an air duct structure and a dish-washing machine, and relates to the technical field of kitchen appliances, the air duct structure provided by the utility model comprises a cavity, the inner wall of the cavity is provided with a mounting surface and an additional air outlet surface, and the mounting surface and the additional air outlet surface are not coplanar; the fan device is connected with the mounting surface, and the fan device is provided with a first air inlet and a first air outlet; and the extension air duct comprises a second air inlet and a second air outlet, the second air inlet is communicated with the first air outlet, the second air outlet is formed in the additional air outlet face and in the direction perpendicular to the mounting face, and a distance is formed between the second air outlet and the first air inlet.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an air duct structure and a dishwasher. Background Art

[0002] At present, most dishwashers on the market are equipped with fan modules, which mainly disturb the air to form airflow through the rotation of the fan, or blow air into the inner tank, or draw air from the inner tank to the outside. The purpose is to accelerate the air flow inside the cavity, make the temperature inside the inner tank cavity more uniform, and accelerate the drying of tableware during the drying stage. However, currently most of them are low-power fans, and they also basically form local air turbulence circulation on one side of the inner tank or a single diagonal, which cannot make the dishwasher cavity quickly form a circulation of the entire cavity, thus resulting in the problem of limited drying range. Utility Model Content

[0003] The utility model aims to provide an air duct structure and a dishwasher to alleviate the technical problem that the airflow circulation range in the existing cavity is small.

[0004] In a first aspect, the utility model provides an air duct structure, comprising:

[0005] A cavity, wherein the inner wall of the cavity has a mounting surface and an additional air outlet surface, and the two are not coplanar;

[0006] A fan device, the fan device is connected to the mounting surface, and the fan device has a first air inlet and a first air outlet;

[0007] An extended air duct, the extended air duct comprising a second air inlet and a second air outlet, the second air inlet being connected to the first air outlet, the second air outlet being arranged on the additional air outlet surface, and in a direction perpendicular to the mounting surface, the second air outlet is spaced apart from the first air inlet.

[0008] Furthermore, the additional air outlet surface is provided with a first through hole and a second through hole penetrating the inner and outer walls thereof, and the first through hole and the second through hole are arranged at intervals in a direction perpendicular to the mounting surface;

[0009] The extended air duct includes a first section and a second section, the first section is located inside the cavity, and the second section is located outside the cavity; the first section has a first opening and a second opening at both ends, respectively, and the second section has a third opening and a fourth opening at both ends; the first opening is connected to the first air outlet, and the second opening is connected to the third opening through the first through hole; the fourth opening is connected to the second through hole.

[0010] Furthermore, the air duct structure also includes a first fixed cover, and the opposite ends of the first fixed cover are respectively provided with a first thread structure and a second thread structure with opposite thread directions, the second opening is provided with a third thread structure corresponding to the first thread structure, and the third opening is provided with a fourth thread structure corresponding to the second thread structure, so that the first fixed cover is threadedly locked with the second opening and the third opening at the same time.

[0011] Furthermore, a grille structure is provided at the second air outlet of the extended air duct to disperse the airflow.

[0012] Furthermore, the air duct structure also includes a second fixed cover, the fourth opening passes through the second through hole from outside to inside and is connected to the second fixed cover; the grille structure is arranged on the second fixed cover.

[0013] Furthermore, a sealing structure is provided at the connection between the second section and the additional air outlet surface.

[0014] Furthermore, the fan device includes a centrifugal fan and a cover body, the centrifugal fan and the cover body are both connected to the inner side wall of the mounting surface, and the cover body is arranged on the outer side of the centrifugal fan;

[0015] A first air inlet is arranged in the middle of the cover body; a first air outlet is arranged on the side of the cover body, so that an air path with middle air intake and side air outlet is formed inside the fan device.

[0016] Furthermore, a heating device is provided in the fan device, and the heating device is used to heat the wind blown out by the fan device.

[0017] Furthermore, the left side surface and the right side surface of the cavity both form additional air outlet surfaces, and the two extended air ducts arranged on the left and right are symmetrically arranged.

[0018] In a second aspect, the utility model provides a dishwasher, comprising the above-mentioned air duct structure.

[0019] The utility model has at least the following advantages or beneficial effects:

[0020] The air duct structure provided by the utility model includes: a cavity, a fan device and an extended air duct, the inner wall of the cavity has a mounting surface and an additional air outlet surface, and the two are not coplanar; the fan device is connected to the mounting surface, and the fan device has a first air inlet and a first air outlet; the extended air duct includes a second air inlet and a second air outlet, the second air inlet is connected to the first air outlet, the second air outlet is arranged on the additional air outlet surface, and in a direction perpendicular to the mounting surface, the second air outlet and the first air inlet have a distance.

[0021] Different from the prior art, the present solution additionally adds an extended air duct, which collects the wind generated by the fan device and guides the wind to the side away from the installation surface, and outputs it from the second air outlet away from the first air inlet, thereby forming a longer air flow path inside the cavity, so that the airflow inside the cavity can be more fully stirred, thereby forming a larger range of gas circulation.

[0022] The dishwasher provided by the utility model includes the above-mentioned air duct structure. Since the dishwasher provided by the utility model adopts the above-mentioned air duct structure, the dishwasher provided by the utility model also has the advantages of the air duct structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of an air duct structure provided in an embodiment of the utility model;

[0025] Figure 2 An exploded view of the air duct structure provided by an embodiment of the utility model;

[0026] Figure 3 A front view of the air duct structure provided by an embodiment of the utility model;

[0027] Figure 4 A side view of the air duct structure provided by an embodiment of the utility model;

[0028] Figure 5 A circulating air path diagram of the air duct structure provided in an embodiment of the utility model from a top view.

[0029] Icon: 100 - cavity; 110 - first through hole; 120 - second through hole;

[0030] 200 - fan device; 210 - centrifugal fan; 220 - cover;

[0031] 300 - extended air duct; 310 - first section; 320 - second section; 330 - first fixed cover; 340 - second fixed cover. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] like Figure 1 As shown, the air duct structure provided by the utility model includes: a cavity 100, a fan device 200 and an extended air duct 300. The cavity 100 can be used for cooking or for washing dishes.

[0039] The cavity 100 is generally a rectangular box-shaped structure, which includes a rear back side, and a left side, an upper side, a lower side and a right side connected to the rear back side respectively, and a front side that can be opened and closed, that is, a door body. The installation surface can be any side except the front side, and correspondingly, the additional air outlet surface is the surface except the front side and the installation surface. In this embodiment, the installation surface is the rear side; the left side and the right side form the additional air outlet surface. In other feasible solutions, the upper side or the lower side can also form the additional air outlet surface.

[0040] Specifically, the fan device 200 is connected to the rear back side to avoid interference with the shelf. The fan device 200 has a first air inlet and a first air outlet. The airflow generated by the fan in the fan device 200 flows out from the first air outlet, and the air in the cavity 100 enters the fan device 200 from the first air inlet, thereby forming a circulating airflow inside the cavity 100.

[0041] The extended air duct 300 includes a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet. The second air outlet is arranged on an additional air outlet surface. The additional air outlet surface may be one, two, three or four. In this embodiment, both the left side and the right side form additional air outlet surfaces. In the front-to-back direction, the second air outlet is spaced from the first air inlet. In order to achieve the maximum circulation range, the second air outlet is arranged at a position as far away from the back as possible.

[0042] In the prior art, the airflow generated by the fan device 200 flows out from the side and then flows in from the middle position, and the circulation range is limited to the position near the back, and the circulation range is small. Figure 5 As shown, different from the prior art, the present solution additionally adds an extended air duct 300, which collects the wind generated by the fan device 200 and guides the wind forward, and outputs it from the second air outlet far away from the first air inlet, thereby forming a longer air flow path inside the cavity 100, so that the airflow inside the cavity 100 can be more fully stirred, thereby forming a larger range of gas circulation.

[0043] The additional air outlet surface is provided with a first through hole 110 and a second through hole 120 that penetrates the inner and outer walls thereof. From back to front, the first through hole 110 and the second through hole 120 are arranged at intervals. The first through hole 110 and the second through hole 120 can be located at the same height position, or can be staggered in the up and down directions. The extended air duct 300 includes a first section 310 and a second section 320. Both the first section 310 and the second section 320 are tubular structures for airflow to pass through. The first section 310 is located inside the cavity 100, and is arranged close to the back surface, so as not to interfere with the shelf. The second section 320 is located outside the cavity 100 to avoid interference with the shelf. The first section 310 has a first opening and a second opening at both ends, respectively, and the second section 320 has a third opening and a fourth opening at both ends, respectively. The first opening is connected to the first air outlet, the second opening is connected to the third opening through the first through hole 110, and the fourth opening is connected to the second through hole 120. The airflow generated by the fan device 200 passes through the first air outlet, the first opening, the first section 310, the second opening, the third opening, the second section 320 in sequence, and then flows out from the fourth opening.

[0044] like Figure 2 - Figure 4 As shown, the second opening, the additional air outlet surface and the third opening can be connected as an integral structure, for example, by welding. In this embodiment, for the convenience of processing, the air duct structure also includes a first fixed cover 330, and the first fixed cover 330 is provided with a first thread structure and a second thread structure with opposite thread directions at opposite ends, respectively, and the second opening is provided with a third thread structure corresponding to the first thread structure, and the third opening is provided with a fourth thread structure corresponding to the second thread structure. During installation, the third opening can be passed through the first through hole 110 and then inserted into one end of the first fixed cover 330, and the second opening can be inserted into the other end of the first fixed cover 330, and then the first fixed cover 330 can be rotated. Since the thread structures at both ends are in opposite directions, the first section 310 and the second section 320 at both ends can be screwed to the first fixed cover 330.

[0045] Furthermore, a grille structure is provided at the second air outlet of the extended air duct 300 to disperse the airflow. The grille structure is formed by ribs that are staggered horizontally and vertically, which disrupts the airflow and avoids concentrated airflow.

[0046] Specifically, the air duct structure further includes a second fixing cover 340, the second fixing cover 340 is located inside the cavity 100, and the fourth opening passes through the second through hole 120 from outside to inside and is threadedly connected to the second fixing cover 340. The grille structure is arranged on the second fixing cover 340. The second fixing cover 340 and the second end are clamped on both inner and outer sides of the additional air outlet surface.

[0047] Furthermore, in order to prevent water leakage or air leakage, a sealing structure, such as a sealing ring, is provided at the connection between the second section 320 and the additional air outlet surface.

[0048] The fan device 200 includes a centrifugal fan 210 and a cover 220, both of which are connected to the inner side wall of the rear back, and the cover 220 is arranged on the outer side of the centrifugal fan 210; a first air inlet is arranged in the middle of the cover 220, and the first air inlet faces forward. A first air outlet is arranged on the side of the cover 220, so that an air path with middle air intake and side air outlet is formed inside the fan device 200. Furthermore, a heating device is arranged inside the fan device 200, and the heating device is used to heat the air blown out by the fan device 200, thereby forming high-temperature gas.

[0049] In this embodiment, in order to allow the airflow to fully cover the cavity, additional air outlet surfaces are formed on the left and right sides, and the two extended air ducts 300 arranged on the left and right are symmetrically arranged, forming an airflow in the cavity that flows from the left and right sides to the middle and then to the rear.

[0050] The dishwasher provided by the utility model includes the above-mentioned air duct structure. Since the dishwasher provided by the utility model adopts the above-mentioned air duct structure, the dishwasher provided by the utility model also has the advantages of the air duct structure.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An air duct structure, characterized in that: include: A cavity (100), wherein the inner wall of the cavity (100) has a mounting surface and an additional air outlet surface, and the two are not coplanar; A fan device (200), the fan device (200) being connected to the mounting surface, the fan device (200) having a first air inlet and a first air outlet; An extended air duct (300), wherein the extended air duct (300) comprises a second air inlet and a second air outlet, wherein the second air inlet is connected to the first air outlet, and the second air outlet is arranged on the additional air outlet surface, and in a direction perpendicular to the mounting surface, the second air outlet is spaced apart from the first air inlet.

2. The air duct structure according to claim 1, characterized in that: The additional air outlet surface is provided with a first through hole (110) and a second through hole (120) penetrating the inner and outer walls thereof, and in a direction perpendicular to the mounting surface, the first through hole (110) and the second through hole (120) are arranged at intervals; The extended air duct (300) includes a first section (310) and a second section (320), wherein the first section (310) is located inside the cavity (100), and the second section (320) is located outside the cavity (100); the first section (310) has a first opening and a second opening at both ends, respectively, and the second section (320) has a third opening and a fourth opening at both ends; the first opening is connected to the first air outlet, and the second opening is connected to the third opening via the first through hole (110); and the fourth opening is connected to the second through hole (120).

3. The air duct structure according to claim 2, characterized in that: The air duct structure also includes a first fixing cover (330), wherein the first fixing cover (330) is provided with a first thread structure and a second thread structure with opposite thread directions at two opposite ends thereof, the second opening is provided with a third thread structure corresponding to the first thread structure, and the third opening is provided with a fourth thread structure corresponding to the second thread structure, so that the first fixing cover (330) is thread-locked with the second opening and the third opening at the same time.

4. The air duct structure according to claim 2, characterized in that: A grille structure is provided at the second air outlet of the extended air duct (300) to disperse the airflow.

5. The air duct structure according to claim 4, characterized in that: The air duct structure further comprises a second fixing cover (340); the fourth opening passes through the second through hole (120) from outside to inside and is connected to the second fixing cover (340); and the grille structure is arranged on the second fixing cover (340).

6. The air duct structure according to claim 2, characterized in that: A sealing structure is provided at the connection between the second section (320) and the additional air outlet surface.

7. The air duct structure according to claim 1, characterized in that: The fan device (200) comprises a centrifugal fan (210) and a cover (220), wherein the centrifugal fan (210) and the cover (220) are both connected to the inner side wall of the installation surface, and the cover (220) is arranged to cover the outer side of the centrifugal fan (210); The first air inlet is arranged in the middle of the cover body (220); and the first air outlet is arranged on the side of the cover body (220), so that an air path with middle air intake and side air outlet is formed inside the fan device (200).

8. The air duct structure according to claim 1, characterized in that: A heating device is provided in the fan device (200), and the heating device is used to heat the wind blown out by the fan device (200).

9. The air duct structure according to claim 1, characterized in that: The left side surface and the right side surface of the cavity (100) both form the additional air outlet surface, and the two extended air ducts (300) arranged on the left and right are symmetrically arranged.

10. A dishwasher, characterized in that: The invention comprises the air duct structure as described in any one of claims 1 to 9.

Images