An air duct structure for a dishwasher

Abstract

This utility model discloses an air duct structure for a dishwasher. The dishwasher includes an inner tub with a first vent and a second vent connected to it. The structure includes: a breather with a connected air inlet and outlet, the air inlet being connected to the first vent; a connecting air duct with a connected air inlet and outlet, the air inlet being connected to the outlet; a condensing air duct with a connected air inlet and outlet, the air inlet being connected to the second vent and the outlet being connected to the outside; and a connecting pipe with a connecting opening on one side of the condensing air duct, one end of the connecting pipe being connected to the connecting opening and the other end being connected to the outlet. A baffle is provided inside the condensing air duct, corresponding to the connecting opening. Its simple structure prevents condensate from accumulating on the outside of the inner tub, thus further improving the user experience.

Description

Technical Field

[0001] This utility model relates to the field of dishwasher technology, and in particular to an air duct structure for a dishwasher. Background Technology

[0002] As people's living standards improve, dishwashers are increasingly entering Chinese households. In current technology, after cleaning dishes, dishwashers need to dry them. Most dishwashers use dual fans to filter and dry the air entering the dishwasher tub and expel the hot, humid air from inside. However, when dual fans agitate the hot, humid air inside the dishwasher tub to accelerate drying, high pressure is created within the tub. This causes the hot, humid air to overflow through the pressure balance port, accumulating and forming condensation. This can lead to accelerated aging of dishwasher components, false overflow alarms, and even electrical safety accidents. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes an air duct structure for a dishwasher. Its structure is simple and can prevent condensate from accumulating on the outside of the inner tank, thereby further improving the user experience.

[0004] The above objective is achieved through the following technical solution:

[0005] A duct structure for a dishwasher, the dishwasher including an inner tub, on which a first vent and a second vent are respectively connected, comprising:

[0006] A respirator having an air inlet and an air outlet connected in communication, the air inlet being connected to a first ventilation port;

[0007] A connecting air duct has a connected air inlet and an air outlet, the air inlet being connected to the air outlet;

[0008] A condensing air duct, wherein the condensing air duct has an air inlet and an air outlet connected to each other, the air inlet being connected to a second vent, and the air outlet being connected to the outside.

[0009] A connecting pipe has a connecting port on one side of the condensing air duct. One end of the connecting pipe is connected to the connecting port, and the other end is connected to the vent. A baffle is provided in the condensing air duct, and the baffle is correspondingly provided to the connecting port.

[0010] In some embodiments, the fixed end of the baffle is connected to the inner wall of the condensation duct, and its free end is inclined from top to bottom and away from the end of the connection port.

[0011] In some embodiments, the cross-sectional area of ​​the baffle is larger than the cross-sectional area of ​​the communication port.

[0012] In some embodiments, a plurality of ribs are also included, and the plurality of ribs are respectively disposed in the connecting air duct.

[0013] In some embodiments, the plurality of ribs include a first rib and a second rib. The connecting duct has a vertical section and a horizontal section. The air inlet is provided at the lower end of the vertical section. The upper end of the vertical section extends upward and connects to one end of the horizontal section. The first rib is provided on the inner wall of the vertical section. The other end of the horizontal section extends horizontally. The ventilation opening is provided at the end of the horizontal section away from the vertical section. The second rib is provided on the inner wall of the horizontal section.

[0014] In some embodiments, the fixed end of the first rib is connected to the inner wall of the vertical section, and its free end is inclined towards the air inlet. The fixed end of the second rib is connected to the inner wall of the horizontal section, and its free end is inclined towards the air outlet.

[0015] In some embodiments, a plurality of protruding plates are also included, which are respectively staggered on the inner wall of the condensing air duct.

[0016] In some embodiments, a PTC hot air module is also included, which is disposed at the first vent location.

[0017] In some embodiments, a condenser fan is also included, which is located at the second vent.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] 1. This utility model relates to an air duct structure for dishwashers. Its structure is simple and prevents condensate from accumulating on the outside of the inner tank, thereby further improving the user experience. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the dishwasher air duct structure in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the respirator in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure connecting the air duct in an embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the condenser duct structure in an embodiment of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model can be arranged and designed in various different configurations.

[0026] 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 claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of the claimed invention.

[0027] Example:

[0028] like Figures 1 to 4 As shown, an air duct structure for a dishwasher is disclosed. The dishwasher includes an inner tub 1, on which a first vent and a second vent are respectively connected, comprising:

[0029] Breathing device 2, the breathing device 2 has an air inlet 21 and an air outlet 22 connected to each other, the air inlet 21 being connected to the first ventilation port;

[0030] The connecting air duct 3 has an air inlet 31 and an air outlet 32 ​​that are connected to each other. The air inlet 31 is connected to the air outlet 22.

[0031] The condensing air duct 4 has an air inlet 41 and an air outlet 42 that are connected to each other. The air inlet 41 is connected to the second vent, and the air outlet 42 is connected to the outside.

[0032] The connecting pipe 5 has a connecting port on one side of the condensing air duct 4. One end of the connecting pipe 5 is connected to the connecting port, and the other end is connected to the ventilation port 32. A baffle 44 is provided in the condensing air duct 4 and the baffle 44 is correspondingly provided to the connecting port.

[0033] In this example, when multiple fans are running, the breather 2 is connected to the condenser duct 4 via the connecting duct 3. Because a negative pressure zone is formed in the condenser duct 4 at the location of the connecting pipe 5, the humid and hot air overflowing from the breather 2 is introduced into the low-pressure zone of the condenser duct 4 and then discharged to the outside of the dishwasher through the condenser duct 4. Its simple structure prevents condensate from accumulating on the outside of the inner tank 1, thereby further improving the user experience.

[0034] In this embodiment, the dishwasher includes an inner tub 1. A first vent and a second vent are respectively provided on the side wall of the inner tub 1, communicating with the internal space of the inner tub 1. An air inlet 21 is connected to the first vent, allowing the respirator 2 to communicate with the inner cavity of the inner tub 1. An air inlet 31 is connected to an air outlet 22, allowing the respirator 2 to communicate with a connecting air duct 3. Simultaneously, an air inlet 41 is connected to the second vent, and an air outlet 42 is connected to the outside. This allows the condensing air duct 4 to communicate with the inner cavity of the inner tub 1, thereby condensing the hot air entering the condensing air duct 4. Furthermore, a connecting port is provided on one side of the condensing air duct 4, communicating with the condensing air duct 4. One end of a connecting pipe 5 is connected to the connecting port, and the other end is connected to the vent 32, thus allowing the respirator 2 to communicate with the inner cavity of the inner tub 1. By connecting the air duct 3 to the condensing air duct 4, and installing a baffle 44 inside the condensing air duct 4 with the baffle 44 corresponding to the connecting port, a negative pressure zone is formed at the position of the connecting pipe 5 when the fan on the condensing air duct 4 is working. When multiple fans are running, the breather 2 is connected to the condensing air duct 4 through the air duct 3, so that the hot and humid air overflowing from the breather 2 is introduced into the low pressure zone of the condensing air duct 4. Even if the hot and humid air overflowing from the breather 2 is introduced into the position of the connecting pipe 5, it is then discharged to the outside of the dishwasher through the condensing air duct 4. This prevents condensate from accumulating on the outside of the inner tank 1, improves the cabinet damage caused by condensate accumulation, enhances the user experience, and also prevents electrical safety accidents.

[0035] Furthermore, the fixed end of the baffle 44 is connected to the inner wall of the condenser duct 4, and its free end is inclined from top to bottom and away from the end of the connection opening.

[0036] Preferably, the cross-sectional area of ​​the baffle 44 is larger than the cross-sectional area of ​​the connecting opening.

[0037] Specifically, it also includes multiple protruding plates 7, which are arranged alternately on the inner wall of the condensing air duct 4.

[0038] Preferably, it also includes a condenser fan, which is located at the second vent.

[0039] In this embodiment, since the air inlet 41 at the upper end of the condensing air duct 4 is connected to the second vent of the inner liner 1 through the condensing fan, and the air outlet 42 at the lower end is connected to the outside, the air outlet direction of the condensing air duct 4 is from top to bottom. Then, through the action of the condensing fan, the humid and hot air in the inner liner 1 enters the condensing air duct 4 through the second vent and the air inlet 41 in sequence. Then, the humid and hot air entering the condensing air duct 4 continues to flow from top to bottom, and then is discharged out through the air outlet 42. In addition, multiple protruding plates 7 are staggered in the condensing air duct 4 along the air outlet direction. The fixed end of the protruding plate 7 is connected to the inner wall of the condensing air duct 4, and its free end is inclined from the inner wall of the condensing air duct 4 towards the interior of the condensing air duct 4 and along the direction of gas flow, thereby effectively improving the condensation effect.

[0040] Furthermore, it also includes multiple ribs, which are respectively set in the connecting air duct 3.

[0041] Preferably, the plurality of ribs include a first rib 61 and a second rib 62. The connecting duct 3 has a vertical section 33 and a horizontal section 34. An air inlet 31 is provided at the lower end of the vertical section 33. The upper end of the vertical section 33 extends upward and connects to one end of the horizontal section 34. The first rib 61 is provided on the inner wall of the vertical section 33. The other end of the horizontal section 34 extends horizontally. A ventilation opening 32 is provided at the end of the horizontal section 34 away from the vertical section 33. The second rib 62 is provided on the inner wall of the horizontal section 34.

[0042] Preferably, the fixed end of the first rib 61 is connected to the inner wall of the vertical section 33, and its free end is inclined towards the air inlet 31. The fixed end of the second rib 62 is connected to the inner wall of the horizontal section 34, and its free end is inclined towards the air outlet 32.

[0043] Specifically, it also includes a PTC hot air module, which is located at the first vent.

[0044] In this embodiment, the connecting duct 3 has a vertical section 33 and a horizontal section 34. An air inlet 31 is located at the lower end of the vertical section 33, and the air inlet 31 is connected to the air outlet 22 to connect the respirator 2 to the connecting duct 3. The upper end of the vertical section 33 extends upward and connects to one end of the horizontal section 34. The other end of the horizontal section 34 is bent and extends horizontally from left to right. A ventilation opening 32 is located at the end of the horizontal section 34 furthest from the vertical section 33. The ventilation opening 32 is connected to the connecting port via a connecting pipe 5 to allow the connecting duct 3 to communicate with the air outlet 22. The pipe 5 is connected to the condenser duct 4. The fixed end of the first rib 61 is connected to the inner wall of the vertical section 33, and its free end is inclined from the vent 32 toward the air inlet 31. That is, the free end of the first rib 61 is inclined from top to bottom. The fixed end of the second rib 62 is connected to the inner wall of the horizontal section 34, and its free end is inclined from the air inlet 31 toward the vent 32. That is, the free end of the second rib 62 is inclined from left to right. In this way, the first rib 61 and the second rib 62 work together to form a structure to prevent the backflow of hot and humid air, thereby effectively preventing the hot and humid air in the condenser duct 4 from flowing back into the dishwasher.

[0045] In this embodiment, a PTC hot air module is provided at the first vent to output hot air into the inner liner 1. At the same time, a condenser fan is provided at the second vent to guide the hot air from the inner liner 1 into the connecting duct 3. When the PTC hot air module is working, some humid and hot air will enter the connecting duct 3. Driven by the fan, the humid and hot air in the connecting duct 3 will form a negative pressure zone at the connecting pipe 5 when the condenser fan is working, thereby effectively allowing the hot air in the connecting duct 3 to be smoothly discharged out of the dishwasher cavity.

[0046] In this embodiment, the internal space of the dishwasher inner tub 1 is connected to the outside through the air inlet 41 and the air outlet 42 in sequence, thereby forming the main exhaust channel of the air duct system. In addition, the internal space of the dishwasher inner tub 1 is connected to the outside through the air inlet 21, the air outlet 22, the air inlet 31, the ventilation vent 32, the connecting pipe 5, the connecting port, and the air outlet 42 in sequence, thereby forming the secondary exhaust channel of the air duct system, which can effectively prevent the overflow of hot and humid gas.

[0047] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A duct structure for a dishwasher, the dishwasher comprising an inner tub (1), wherein a first vent and a second vent are respectively connected to the inner tub (1), characterized in that, include: A respirator (2) having an air inlet (21) and an air outlet (22) connected together, the air inlet (21) being connected to the first air outlet; A connecting air duct (3) is provided, wherein the connecting air duct (3) has an air inlet (31) and a ventilation outlet (32) connected together, wherein the air inlet (31) is connected to the air outlet (22); A condensing air duct (4) has an air inlet (41) and an air outlet (42) connected to each other. The air inlet (41) is connected to the second vent, and the air outlet (42) is connected to the outside. A connecting pipe (5) has a connecting port on one side of the condensing air duct (4). One end of the connecting pipe (5) is connected to the connecting port, and the other end is connected to the ventilation port (32). A baffle (44) is provided in the condensing air duct (4) and the baffle (44) is correspondingly provided to the connecting port.

2. The air duct structure for a dishwasher according to claim 1, characterized in that, The fixed end of the baffle (44) is connected to the inner wall of the condensation duct (4), and its free end is inclined from top to bottom and away from the end of the communication port.

3. The air duct structure for a dishwasher according to claim 1, characterized in that, The cross-sectional area of ​​the baffle (44) is greater than the cross-sectional area of ​​the connecting port.

4. The air duct structure for a dishwasher according to claim 1, characterized in that, It also includes multiple ribs, which are respectively disposed in the connecting air duct (3).

5. The air duct structure for a dishwasher according to claim 4, characterized in that, The plurality of ribs include a first rib (61) and a second rib (62). The connecting duct (3) has a vertical section (33) and a horizontal section (34). The air inlet (31) is provided at the lower end of the vertical section (33). The upper end of the vertical section (33) extends upward and is connected to one end of the horizontal section (34). The first rib (61) is provided on the inner wall of the vertical section (33). The other end of the horizontal section (34) extends horizontally. The ventilation opening (32) is provided at the end of the horizontal section (34) away from the vertical section (33). The second rib (62) is provided on the inner wall of the horizontal section (34).

6. The air duct structure for a dishwasher according to claim 5, characterized in that, The fixed end of the first rib (61) is connected to the inner wall of the vertical section (33), and its free end is inclined towards the air inlet (31). The fixed end of the second rib (62) is connected to the inner wall of the horizontal section (34), and its free end is inclined towards the ventilation opening (32).

7. The air duct structure for a dishwasher according to claim 1, characterized in that, It also includes multiple protruding plates (7), which are respectively staggered on the inner wall of the condenser duct (4).

8. A duct structure for a dishwasher according to any one of claims 1 to 7, characterized in that, It also includes a PTC hot air module, which is located at the first vent.

9. A duct structure for a dishwasher according to any one of claims 1 to 7, characterized in that, It also includes a condenser fan, which is located at the second vent.

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