Air duct system of dish washing machine

Abstract

An air duct system of a dish-washing machine comprises an air inlet device arranged at the bottom of the outer side of an inner container and a ventilation device arranged at the top of the inner container, the air inlet end of the air inlet device is communicated with the outside, the air outlet end of the air inlet device is communicated with an inner cavity of the inner container, the air inlet end of the ventilation device is communicated with the inner cavity of the inner container, and the air outlet end of the ventilation device is communicated with the outside. According to the dish-washing machine air duct system, the air inlet device is arranged at the bottom of the outer side of the inner container, the ventilation device is arranged at the top of the inner container, external cold air enters the inner cavity of the inner container through the air inlet device, the air inlet device heats the cold air, and then generated hot air can dry tableware in the inner cavity; hot steam generated in the tableware drying process is exhausted to the outside through the ventilation device, the hot steam rises, and the ventilation device is arranged at the top of the inner container, so that the hot steam is conveniently exhausted, the exhaust effect is improved, and the tableware drying effect is improved.

Description

Technical Field

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

[0002] Chinese patent document CN222018280U, published on November 19, 2024, discloses a dishwasher, including a cabinet; a box body with an air inlet and an air outlet fluidly connected to an exhaust channel; the box body also has an air inlet and an air outlet fluidly connected to an airflow circulation channel; and a condenser disposed in the airflow circulation channel. The air inlet and air outlet are both fluidly connected to a first through-hole on the cabinet body, the air inlet is fluidly connected to a second through-hole on the cabinet body, and the air outlet is fluidly connected to the outside. Along the airflow direction, the air inlet is located upstream of the air outlet, and the air outlet is located upstream of the air outlet. This dishwasher's box body can exhaust hot and humid air from the cabinet body, but because the box body is located on the side of the cabinet, its exhaust effect is generally poor, resulting in a generally poor drying effect.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide a dishwasher air duct system that is simple in structure, has a good drying effect, facilitates the discharge of hot steam, provides a good user experience, and is highly practical, so as to overcome the shortcomings of the prior art.

[0005] A dishwasher air duct system designed for this purpose is characterized by comprising an air inlet device disposed at the bottom of the outer side of the inner tub and a venting device disposed at the top of the inner tub. The air inlet end of the air inlet device is connected to the outside, the air outlet end of the air inlet device is connected to the inner cavity of the inner tub, the air inlet end of the venting device is connected to the inner cavity of the inner tub, and the air outlet end of the venting device is connected to the outside.

[0006] The air intake device includes a blower, which is located at the air intake end of the air intake device.

[0007] The air intake device also includes a heating component. The air intake device has an air intake channel. The air intake end, the air intake channel and the air outlet end of the air intake device are connected in sequence. The heating component is installed on the air intake channel.

[0008] The air intake device also includes an air purification component. The air intake device has a purification channel that connects to the air outlet of the air intake device, and the air purification component is installed on the purification channel.

[0009] The ventilation device is equipped with an air outlet channel. The air inlet, air outlet channel and air outlet of the ventilation device are connected in sequence and arranged from bottom to top.

[0010] The air inlet of the ventilator faces downward and the air outlet faces upward. The air inlet of the ventilator has several rows of air inlets arranged in a ring, and the air outlet of the ventilator has several air outlets arranged in a ring.

[0011] The ventilation device includes an upper cover and a lower cover, with an air outlet channel formed between the upper cover and the lower cover. The air inlet is located at the bottom of the lower cover, and the air outlet is located at the top of the upper cover.

[0012] The dishwasher includes an outer shell, an inner tub inside the outer shell, a venting device located between the inner tub and the outer shell, a sealing groove on the air inlet end of the venting device, a first sealing rib on the top of the inner tub, a first sealing ring between the sealing groove and the first sealing rib, a second sealing rib on the air outlet end of the venting device, and a second sealing ring between the second sealing rib and the outer shell.

[0013] The heating element is a PTC heater, and the air purification element is a plasma module, a negative ion module, or an ozone module.

[0014] The air intake device also includes a first air duct shell and a second air duct shell that are connected to each other. An air intake channel and a purification channel are formed between the first air duct shell and the second air duct shell. An air inlet is provided on the air intake end of the air intake device and is located at the bottom of the first air duct shell. An air outlet is provided on the air outlet end of the air intake device and is located at the top of the second air duct shell. The air outlet, the air intake channel and the air inlet are arranged sequentially, one above the other.

[0015] The dishwasher air duct system of this utility model has an air inlet device installed at the bottom of the outer side of the inner tub and a vent device installed at the top of the inner tub. Outside cold air enters the inner cavity of the inner tub through the air inlet device, and the air inlet device heats the cold air. The resulting hot air can dry the tableware in the inner cavity. The hot steam generated during the drying process is discharged to the outside through the vent device. Since hot steam rises, and the vent device is located at the top of the inner tub, it facilitates the discharge of hot steam, improves the exhaust effect, and thus improves the drying effect of the tableware. Attached Figure Description

[0016] Figure 1 This is an exploded view of a portion of the structure of a dishwasher according to one embodiment of the present invention.

[0017] Figure 2 This is a partial structural diagram of a dishwasher according to one embodiment of the present invention.

[0018] Figure 3 This is an exploded view of the ventilation device in one embodiment of the present invention.

[0019] Figure 4 This is an exploded structural diagram of the air-permeable device in one embodiment of the present invention.

[0020] Figure 5 This is a cross-sectional view of the air-permeable device in one embodiment of the present invention.

[0021] Figure 6 This is a partial structural schematic diagram of the air intake device in one embodiment of the present invention.

[0022] Figure 7 This is an exploded view of the air intake device in one embodiment of the present invention.

[0023] Figure 8 This is a schematic diagram of the overall structure of a dishwasher according to one embodiment of the present invention.

[0024] Figure 9 This is an exploded view of a portion of the dishwasher's structure from another angle in one embodiment of the present invention.

[0025] Figure 10 This is a cross-sectional view of a dishwasher according to one embodiment of the present invention.

[0026] Figure 11 for Figure 10 A magnified structural diagram of point A in the middle. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] See Figures 1-11 The air duct system of this dishwasher includes an air inlet device 2 located at the bottom of the outer side of the inner tub 1 and a venting device 3 located at the top of the inner tub 1. The air inlet end of the air inlet device 2 is connected to the outside, and the air outlet end of the air inlet device 2 is connected to the inner cavity of the inner tub 1. The air inlet end of the venting device 3 is connected to the inner cavity of the inner tub 1, and the air outlet end of the venting device 3 is connected to the outside. Cold air from the outside enters the inner cavity of the inner tub 1 through the air inlet device 2, and hot steam in the inner cavity flows upward and is discharged to the outside through the venting device 3, thereby realizing external circulation drying of the inner tub 1.

[0029] The air inlet device 2 includes a blower 4 and a heating element 5. An air inlet channel 6 is provided inside the air inlet device 2. The air inlet end of the air inlet device 2, the air inlet channel 6 and the air outlet end of the air inlet device 2 are connected in sequence. The blower 4 is located at the air inlet end of the air inlet device 2, and the heating element 5 is located on the air inlet channel 6. When the blower 4 is working, outside air enters the air inlet channel 6 through the air inlet end of the air inlet device 2. The heating element 5 heats the cold air. The heated hot air enters the inner cavity of the inner liner 1 through the air outlet end of the air inlet device 2, thereby drying the tableware in the inner cavity.

[0030] The air intake device 2 also includes an air purification component 7. The air intake device 2 is provided with a purification channel 8, which is connected to the air outlet of the air intake device 2. The air purification component 7 is installed on the purification channel 8. When hot air passes through the air outlet of the air intake device 2, the air purification component 7 can freshen and disinfect the hot air to prevent the hot air from entering the inner cavity and contaminating the tableware.

[0031] The ventilation device 3 is provided with an air outlet channel 9. The air inlet end of the ventilation device 3, the air outlet channel 9 and the air outlet end of the ventilation device 3 are connected in sequence and arranged from bottom to top. This structure is conducive to the discharge of hot steam. When the dishwasher is drying, the hot steam in the inner cavity enters the air outlet channel 9 through the air inlet end of the ventilation device 3 and is then discharged to the outside through the air outlet end of the ventilation device 3.

[0032] The air outlet channel 9 is inclined downward from the air outlet end of the air venting device 3 to the air inlet end of the air venting device 3. When hot steam passes through the air outlet channel 9, it may condense. The condensed gas is discharged to the outside, while the condensed water will flow back to the air inlet end of the air venting device 3 along the downwardly inclined air outlet channel 9, and then flow back to the inner cavity of the inner liner 1.

[0033] The air outlet channel 9 is flat, which does not take up excessive space and helps to reduce the overall thickness of the machine.

[0034] The air inlet end of the ventilator 3 is set downwards, and the air outlet end of the ventilator 3 is set upwards. The air inlet end of the ventilator 3 is provided with several rows of air inlets 10 arranged in a ring, and the air outlet end of the ventilator 3 is provided with several air outlets 11 arranged in a ring. The air inlets 10, the air outlet channel 9 and the air outlets 11 are connected in sequence, and the air outlets 11 are connected to the outside.

[0035] The ventilation device 3 includes an upper cover 12 and a lower cover 13, with an air outlet channel 9 formed between the upper cover 12 and the lower cover 13. The air inlet 10 is located at the bottom of the lower cover 13, and the air outlet 11 is located at the top of the upper cover 12.

[0036] The top of the inner liner 1 is also provided with an air outlet, which includes several annularly distributed through holes 24. The inner cavity of the inner liner 1, the through holes 24 and the air inlet 10 are connected in sequence.

[0037] The dishwasher includes a housing 14, an inner tub 1 disposed inside the housing 14, a venting device 3 located between the inner tub 1 and the housing 14, a sealing groove 15 provided on the air inlet end of the venting device 3, the sealing groove 15 being located outside the air inlet 10, a first sealing rib 16 provided on the top of the inner tub 1, the first sealing rib 16 being located outside the through hole 24, a first sealing ring 17 provided between the sealing groove 15 and the first sealing rib 16, a second sealing rib 18 provided on the air outlet end of the venting device 3, the second sealing rib 18 being located outside the air outlet 11, and a second sealing ring 19 provided between the second sealing rib 18 and the housing 14 (top cover 27); the first sealing ring 17 can prevent hot steam from leaking into the housing 14 from the gap between the inner tub 1 and the lower cover 13, and the second sealing ring 19 can prevent hot steam from leaking into the housing 14 from the gap between the upper cover 12 and the housing 14.

[0038] The first sealing ring 17 is installed on the sealing groove 15. The first sealing ring 17 is provided with a first slot 25. The first sealing rib 16 is inserted into the first slot 25. The second sealing ring 19 is provided with a second slot 26. The second sealing rib 18 is inserted into the second slot 26, which can improve the sealing effect.

[0039] The upper cover 12 and the lower cover 13 are welded together, and the lower cover 13 is fixed to the top of the inner liner 1 by screws.

[0040] The outer shell 14 is provided with a top cover 27. The ventilation device 3 is located between the inner liner 1 and the top cover 27. The top cover 27 is provided with an air outlet 28. The air outlet 11 is connected to the outside through the air outlet 28.

[0041] Heating component 5 is a PTC heater, and air purification component 7 is a plasma module, negative ion module, or ozone module.

[0042] The air inlet device 2 also includes a first air duct shell 20 and a second air duct shell 21 connected to each other. An air inlet channel 6 and a purification channel 8 are formed between the first air duct shell 20 and the second air duct shell 21. An air inlet 22 is provided on the air inlet end of the air inlet device 2. The air inlet 22 is located at the bottom of the first air duct shell 20. An air outlet 23 is provided on the air outlet end of the air inlet device 2. The air outlet 23 is located at the top of the second air duct shell 21. The air outlet 23, the air inlet channel 6 and the air inlet 22 are arranged vertically in sequence, which is conducive to hot air entering the inner cavity of the inner liner 1. The air inlet 22, the air inlet channel 6 and the air outlet 23 are connected in sequence. The purification channel 8 is located on one side of the air outlet 23 and is connected to the air outlet 23.

[0043] An air outlet 29 is provided on the side of the inner liner 1 corresponding to the position of the air outlet 23. The air outlet 23 is connected to the inner cavity of the inner liner 1 through the air outlet 29.

[0044] The first air duct shell 20 and the second air duct shell 21 are fastened together by snaps, and the second air duct shell 21 is fixed to the side of the inner liner 1 by screws.

[0045] The air intake device 2 is flat, which reduces the space occupied by the air intake device 2. A base 30 is provided below the inner liner 1, and the lower part of the air intake device 2 extends into the base 30.

[0046] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A duct system for a dishwasher, characterized in that: It includes an air inlet device (2) located at the bottom of the outer side of the inner liner (1) and a ventilation device (3) located at the top of the inner liner (1). The air inlet end of the air inlet device (2) is connected to the outside, the air outlet end of the air inlet device (2) is connected to the inner cavity of the inner liner (1), the air inlet end of the ventilation device (3) is connected to the inner cavity of the inner liner (1), and the air outlet end of the ventilation device (3) is connected to the outside.

2. The air duct system of the dishwasher according to claim 1, characterized in that: The air intake device (2) includes a blower (4), which is located at the air intake end of the air intake device (2).

3. The air duct system of the dishwasher according to claim 2, characterized in that: The air intake device (2) also includes a heating component (5). An air intake channel (6) is provided inside the air intake device (2). The air intake end, the air intake channel (6) and the air outlet end of the air intake device (2) are connected in sequence. The heating component (5) is installed on the air intake channel (6).

4. The air duct system of the dishwasher according to claim 1, characterized in that: The air intake device (2) also includes an air purification component (7). A purification channel (8) is provided inside the air intake device (2). The purification channel (8) is connected to the air outlet of the air intake device (2). The air purification component (7) is installed on the purification channel (8).

5. The air duct system of the dishwasher according to claim 1, characterized in that: The ventilation device (3) is provided with an air outlet channel (9). The air inlet end, the air outlet channel (9) and the air outlet end of the ventilation device (3) are connected in sequence and arranged from bottom to top.

6. The air duct system of the dishwasher according to claim 5, characterized in that: The air inlet of the ventilator (3) is set downwards, and the air outlet of the ventilator (3) is set upwards. The air inlet of the ventilator (3) is provided with several rows of air inlets (10) arranged in a ring, and the air outlet of the ventilator (3) is provided with several air outlets (11) arranged in a ring.

7. The air duct system of the dishwasher according to claim 6, characterized in that: The ventilation device (3) includes an upper cover (12) and a lower cover (13), with an air outlet channel (9) formed between the upper cover (12) and the lower cover (13). The air inlet (10) is located at the bottom of the lower cover (13), and the air outlet (11) is located at the top of the upper cover (12).

8. The air duct system of the dishwasher according to claim 7, characterized in that: The dishwasher includes an outer shell (14), an inner tub (1) disposed inside the outer shell (14), a venting device (3) located between the inner tub (1) and the outer shell (14), a sealing groove (15) provided on the air inlet end of the venting device (3), a first sealing rib (16) provided on the top of the inner tub (1), a first sealing ring (17) provided between the sealing groove (15) and the first sealing rib (16), a second sealing rib (18) provided on the air outlet end of the venting device (3), and a second sealing ring (19) provided between the second sealing rib (18) and the outer shell (14).

9. The air duct system of the dishwasher according to claim 4, characterized in that: The heating component (5) is a PTC heater, and the air purification component (7) is a plasma module, a negative ion module, or an ozone module.

10. The air duct system of the dishwasher according to claim 4, characterized in that: The air inlet device (2) also includes a first air duct shell (20) and a second air duct shell (21) connected to each other. An air inlet channel (6) and a purification channel (8) are formed between the first air duct shell (20) and the second air duct shell (21). An air inlet (22) is provided on the air inlet end of the air inlet device (2). The air inlet (22) is located at the bottom of the first air duct shell (20). An air outlet (23) is provided on the air outlet end of the air inlet device (2). The air outlet (23) is located at the top of the second air duct shell (21). The air outlet (23), the air inlet channel (6) and the air inlet (22) are arranged vertically in sequence.

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