CN209826627U - Double-air-duct exhaust device and dish washing machine - Google Patents

Abstract

The utility model provides a two wind channel exhaust apparatus and dish washer relates to kitchen utensil technical field. The double-air-channel exhaust device comprises an air channel part and an air driving part which are connected with each other, wherein a first exhaust channel and a second exhaust channel which are mutually independent are arranged in the air channel part, a first air suction opening and a first exhaust opening are arranged on the first exhaust channel, and a second air suction opening and a second exhaust opening are arranged on the second exhaust channel; the dish washing machine comprises an inner container and the double-air-channel exhaust device, wherein the double-air-channel exhaust device is arranged outside the inner container, and the first air suction opening is communicated with the inside of the inner container. Among this two wind channel exhaust apparatus, condensation processing is realized through cooling, collision to inner bag exhaust humid gas in first exhaust duct, and the low temperature air in the second exhaust duct can be to the further cooling processing of the humid gas in the first exhaust duct, further improves the degree that humid gas condensation dehumidifies to reduce inner bag exhaust gas's humidity, reduce the damage and the cupboard that cause the cupboard and milden and rot the pollution that causes the environment.

Description

Double-air-duct exhaust device and dish washing machine

Technical Field

The utility model relates to a kitchen utensil technical field especially relates to a two wind channel exhaust apparatus and dish washer.

Background

The dish washer is used for automatically cleaning tableware such as dishes, chopsticks, dishes, knives and forks, can greatly reduce the labor intensity of cooking personnel and improve the working efficiency of the kitchen, and along with the attention of people to kitchen sanitation and the like, the dish washer is widely applied to kitchens of restaurants and common families.

Dish washer finishes the tableware cleaning back, need be with the inside humid gas of inner bag discharge to the drying process to the inside tableware of inner bag is promoted, however, current domestic dish washer is generally embedded in the cupboard, and generally directly arrange the inside humid gas of inner bag to the cupboard in when exhausting, and the humid gas condensation is on the water droplet adheres to the cupboard inner wall in the cupboard, and after a period, the phenomenon can appear going mouldy or soaking in the cupboard, and the damage that leads to the fact the cupboard is great and causes the pollution to the kitchen environment.

Namely, the humidity of the gas discharged by the existing dish washer is large, the damage to the cabinet is large, and the pollution to the kitchen environment is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two wind channel exhaust apparatus and dish washer to it is great to solve the dish washer combustion gas humidity that exists among the prior art, damages great to the cupboard, and causes the technical problem of pollution to the kitchen environment.

The utility model provides a double-air-duct exhaust device, including the air duct part and the part of dispelling the wind of interconnect, be equipped with mutually independent first exhaust duct and second exhaust duct in the air duct part, be equipped with the first air suction opening that is used for with the inside intercommunication of dishwasher liner and the first exhaust opening that is used for with the outside intercommunication of dishwasher liner on the first exhaust duct, be equipped with the second air suction opening that is used for with the outside intercommunication of dishwasher liner and the second exhaust opening that is used for with the outside intercommunication of dishwasher liner on the second exhaust duct;

the air driving component is used for driving the gas in the inner container to enter the first air exhaust duct through the first air suction opening and exhaust the gas through the first air exhaust opening; the wind dispelling component is also used for driving the gas outside the inner container to flow into the second exhaust duct through the second air suction opening and to be discharged through the second air outlet.

Furthermore, the second exhaust duct is arranged around the periphery of the first exhaust duct.

Furthermore, a baffle is arranged on the inner wall of the first exhaust duct, and the baffle separates the flow channel of the first exhaust duct into a fold line shape.

Furthermore, a backflow hole which can be communicated with the inner container is formed in the first exhaust duct, and the backflow hole is located at the downstream of the first air suction opening.

Further, the baffle is a plurality of, follows the circulation direction in first exhaust duct is a plurality of the baffle crisscross set up one by one in on the relative both sides wall in first exhaust duct, and be located terminally be the acute angle contained angle between baffle and the corresponding upper reaches lateral wall, the backward flow hole is located contained angle department.

Furthermore, the wind-driving part comprises a shell, a driving mechanism and two impellers, the two impellers are arranged in the shell, and the driving mechanism is connected with the impellers and used for driving the impellers to rotate; the shell is provided with a first air inlet and a first air outlet corresponding to one of the impellers, and a second air inlet and a second air outlet corresponding to the other impeller, and the first exhaust port is communicated with the first air inlet; the second air suction opening is communicated with the second air outlet, or the second air outlet is communicated with the second air inlet.

Furthermore, a partition plate is arranged in the shell and separates and blocks the two impellers in two relatively independent chambers.

Furthermore, the number of the driving mechanisms is one, and the driving end of one driving mechanism is connected with the two impellers and can drive the two impellers to synchronously rotate.

Furthermore, the driving mechanism is installed inside the housing and located between the two impellers, the driving mechanism comprises two driving ends, and the two driving ends are connected with the two impellers in a one-to-one correspondence manner.

Another object of the utility model is to provide a dish washer, including inner bag and above-mentioned two wind channel exhaust apparatus, two wind channel exhaust apparatus locate the inner bag is outside, just first suction opening with the inside intercommunication of inner bag.

The utility model discloses two wind channels exhaust apparatus and dish washer's beneficial effect does:

the utility model provides a double-air-duct exhaust device and dish-washing machine, wherein, double-air-duct exhaust device includes the wind channel part that is the condensing channel of humid gas and is used for driving the carminative part that the gas flows, and the wind channel part includes the first exhaust duct that is used for supplying the inside humid gas of dish-washing machine to flow the condensation dehumidification, still includes the second exhaust duct that is used for supplying outside low temperature circulation of air to cool down in the first exhaust duct and promote its interior humid gas condensation dehumidification; the dishwasher comprises an inner container for providing a cleaning space for tableware and the double-air-channel exhaust device for exhausting damp air in the inner container and performing condensation and dehumidification treatment.

After the completion of the washing of dish washer, the inside moist gas that is full of the high temperature of its inner bag, open the part of dispelling wind, on the one hand, the part of dispelling wind orders about the moist gas of dishwasher inner bag inside and gets into first exhaust duct through first suction opening in, and finally flow to first exhaust opening discharge inner bag outside, the process that moist gas flows through first exhaust duct can carry out the heat exchange rather than the lateral wall, the steam condensation is the water droplet, furthermore, steam and lateral wall collision also can promote the steam condensation to be the water droplet, thereby realize the dehumidification processing to moist gas, reduce exhaust gas's humidity, the damage that corresponding reduction exhaust gas caused the cupboard and the pollution that the cupboard mildews and cause the environment. On the other hand, the wind driving part drives low-temperature air outside the inner container to enter the second exhaust duct through the second air suction opening and finally flow to the second exhaust opening to be exhausted; because low temperature air temperature is less than humid gas, consequently the process of low temperature air flow through the second exhaust duct carries out the heat exchange through the humid gas in lateral wall and the first exhaust duct, and the humid gas is exothermic the cooling and is further promoted going on that the condensation dehumidified to further reduce exhaust gas's humidity, reduce the damage and the cupboard that cause to the cupboard and milden and rot the pollution that causes the environment.

Among this two wind channel exhaust apparatus, the first exhaust duct of wind channel part is through the cooling to inner bag exhaust humid gas, the condensation processing is realized in the collision, low temperature air in the second exhaust duct can be to the further cooling processing of the humid gas in the first exhaust duct, further improve the degree that humid gas condensation dehumidifies, thereby greatly reduced inner bag exhaust gas's humidity, reduce exhaust gas and milden and rot the pollution that causes the environment to the damage that the cupboard caused and the cupboard.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic three-dimensional structure diagram of a dual air duct exhaust device provided in an embodiment of the present invention, wherein an air duct component is a schematic internal structure diagram;

fig. 2 is an exploded schematic view of a dual air duct exhaust device according to an embodiment of the present invention;

fig. 3 is a schematic view of an internal structure of a middle driving mechanism of a dual air duct exhaust device according to an embodiment of the present invention.

Icon: 1-an air duct component; 11-a first exhaust duct; 111-a first suction port; 112-a first exhaust port; 113-a baffle; 114-a reflow hole; 12-a second exhaust duct; 121-a second air suction opening; 122-a second air outlet; 13-a bayonet joint; 2-a wind-expelling component; 21-a housing; 211-a first inlet; 212-first outlet port; 213-a second air inlet; 214-a second air outlet; 215-a separator; 216-a receiving tank; 217-a filter cover; 218-card slot; 22-a drive mechanism; 23-an impeller; 31-a first locking member; 32-a first sealing ring; 33-a second locking member; 34-a second seal ring; 35-third seal ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a double-air-duct exhaust device, as shown in fig. 1 and fig. 3, the double-air-duct exhaust device comprises an air duct component 1 and an air driving component 2 which are connected with each other, a first exhaust duct 11 and a second exhaust duct 12 which are independent from each other are arranged in the air duct component 1, a first air suction opening 111 for communicating with the inside of a dishwasher liner and a first exhaust opening 112 for communicating with the outside of the dishwasher liner are arranged on the first exhaust duct 11, and a second air suction opening 121 for communicating with the outside of the dishwasher liner and a second exhaust opening 122 for communicating with the outside of the dishwasher liner are arranged on the second exhaust duct 12; the air driving part 2 is used for driving the air in the liner to enter the first air exhaust duct 11 through the first air suction opening 111 and to be exhausted through the first air exhaust opening 112; the wind-driving component 2 is also used for driving the gas outside the inner container to flow into the second exhaust duct 12 through the second air inlet 121 and to be exhausted through the second air outlet 122.

The embodiment also provides a dishwasher, which comprises an inner container and the double-air-channel exhaust device, wherein the double-air-channel exhaust device is arranged outside the inner container, and the first air suction opening 111 is communicated with the inside of the inner container.

The double-air-duct exhaust device and the dish-washing machine provided by the embodiment comprise an air duct part 1 serving as a condensation channel of humid air and an air driving part 2 used for driving air to flow, wherein the air duct part 1 comprises a first exhaust duct 11 used for flowing, condensing and dehumidifying the humid air in a dish-washing machine liner, and a second exhaust duct 12 used for circulating external low-temperature air so as to cool the interior of the first exhaust duct 11 and promote the humid air in the first exhaust duct to condense and dehumidify; the dishwasher comprises an inner container for providing a cleaning space for tableware and the double-air-channel exhaust device for exhausting damp air in the inner container and performing condensation and dehumidification treatment.

After the completion of the washing of dish washer, the inside moist gas that is full of the high temperature of its inner bag, open the part 2 that drives wind, on the one hand, the part 2 that drives wind orders about the inside moist gas of dish washer inner bag gets into in first exhaust duct 11 through first air inlet 111, and finally flow to first exhaust duct 112 discharge inner bag outside, the process that moist gas flows through first exhaust duct 11 can carry out the heat exchange rather than the lateral wall, the steam condensation is the water droplet, furthermore, steam and lateral wall collision also can promote the steam condensation to be the water droplet, thereby realize the dehumidification processing to moist gas, reduce the humidity of exhaust gas, correspondingly reduce the damage that exhaust gas caused the cupboard and the pollution that the cupboard moldy caused the environment. On the other hand, the wind-driving part 2 drives the low-temperature air outside the inner container to enter the second exhaust duct 12 through the second air inlet 121, and finally flows to the second air outlet 122 to be discharged; because the low temperature air temperature is less than humid gas, the process that low temperature air flows through second exhaust duct 12 carries out the heat exchange through the humid gas in lateral wall and the first exhaust duct 11, and the humid gas heat release cooling further promotes going on of condensation dehumidification to further reduce exhaust gas's humidity, reduce the damage that causes the cupboard and the pollution that the cupboard mildenes and rot and cause the environment.

Among this two wind channel exhaust apparatus, the first exhaust duct 11 of wind channel part 1 is through the cooling to the humid gas of inner bag exhaust, the condensation treatment is realized in the collision, low temperature air in the second exhaust duct 12 can be to the further cooling processing of the humid gas in the first exhaust duct 11, further improve the degree that the humid gas condensation dehumidifies, thereby greatly reduced inner bag exhaust gas's humidity, reduce exhaust gas to the damage that the cupboard caused and milden and rot the pollution that the cupboard caused the environment.

Specifically, the term "low temperature air" refers to the ambient temperature outside the dishwasher, and can be approximately considered as the ambient air temperature is about 25 ℃, and the temperature of the humid air inside the dishwasher liner is about 40 ℃ to 50 ℃.

In this embodiment, as shown in fig. 2, the first air suction opening 111 of the air duct component 1 may protrude outward to form a first boss, the first boss penetrates through the through hole on the inner container and extends into the inner container, and then the first locking member 31 is in locking fit with the first boss to fix the air duct component 1 on the inner container; in addition, a first sealing ring 32 can be pressed between the first locking piece 31 and the inner container to improve the tightness of the communication between the first air suction opening 111 and the inner container and reduce the occurrence of the escape of the humid gas. Specifically, the first locking member 31 may be in a snap-fit connection with the first boss, or may be in a screw-fit connection.

In this embodiment, the first locking member 31 may include a locking ring connected to the first boss and a filter rib provided in the locking ring. Inside humid gas of inner bag need pass through the filtration of filtering the muscle when getting into first exhaust duct 11 through first air inlet 111 to separate the internal debris that mix with of humid gas and keep off outside, with the jam that causes in reducing debris to first air inlet 111 and first exhaust duct 11, ensure going on of normal exhaust, condensation dehumidification in first exhaust duct 11.

In this embodiment, as shown in fig. 1, the second exhaust duct 12 may be enclosed on the periphery of the first exhaust duct 11. When the double-air-duct exhaust device operates, the damp gas in the first exhaust duct 11 can exchange heat with the low-temperature air in the second exhaust duct 12 at the side wall of the damp gas, the heat exchange area is large, and the condensation effect is good, so that the dehumidification effect of the double-air-duct exhaust device is further improved, the humidity of the exhaust gas is reduced, and the damage of the cabinet caused by the exhaust air is correspondingly reduced.

In this embodiment, as shown in fig. 1, a baffle 113 may be disposed on an inner wall of the first exhaust duct 11, and the baffle 113 partitions a flow passage of the first exhaust duct 11 into a zigzag shape. On one hand, the baffle 113 can increase the actual flowing stroke length of the humid gas in the first exhaust duct 11, so that the condensation time of the humid gas in the first exhaust duct 11 is prolonged, the condensation effect is correspondingly improved, and the humidity of the exhausted air is reduced; on the other hand, in the process that the humid gas flows through the first exhaust duct 11, the humid gas can collide with the baffle 113, and water vapor small molecules in the humid gas are collected on water drops on the baffle 113, so that the dehumidification effect is further improved, and the humidity of the exhaust gas is reduced.

In this embodiment, as shown in fig. 1 and fig. 2, a backflow hole 114 capable of communicating with the inner container may be provided in the first exhaust duct 11, and the backflow hole 114 is located downstream of the first air suction opening 111. The liquid drop of humid gas condensation stroke in first exhaust duct 11 assembles for rivers, flows to the return opening 114 time, can locate to flow back to the inner bag inside from the return opening 114, on the basis of realizing the effect of dehumidification, reduces the comdenstion water outflow and to the soaking that the carminative part 2 and cupboard caused, also can reduce and need set up the trouble that connects the liquid container to receive the comdenstion water and bring.

Specifically, in this embodiment, as shown in fig. 1, the number of the baffles 113 may be multiple, and along the flowing direction of the first exhaust duct 11, the baffles 113 are disposed on two opposite sidewalls of the first exhaust duct 11 in a staggered manner, and an acute included angle is formed between the baffle 113 located at the end and the corresponding upstream sidewall, and the backflow hole 114 is disposed at an included angle. Here is a specific form that baffle 113 and backward flow hole 114 set up, specifically, along the circulation direction of first exhaust duct 11, baffle 113 that is located the head end is the head end baffle, baffle 113 that is located the end is the end baffle, baffle 113 between head end baffle and the end baffle is middle baffle, the end baffle sets up towards the direction of first air intake 111 (namely is for being acute angle contained angle between the upstream lateral wall of end baffle and corresponding lateral wall), the comdenstion water that forms between first air intake 111 and the end baffle separates the fender and flows down to the contained angle position between end baffle and the corresponding lateral wall at the end baffle, later flow back to the inner bag inside through backward flow hole 114, thereby further reduce the outer flow of comdenstion water, reduce the emergence of the circumstances such as the soaking that the comdenstion water outflow caused to expelling wind part 2 and cupboard.

Specifically, the first suction port 111 and the first exhaust port 112 are respectively located at two ends of the first exhaust duct 11 in the length direction, so as to ensure the condensation stroke length of the first exhaust duct 11; a head end baffle plate can be arranged at the first air suction opening 111, the head end baffle plate faces to the end part where the first air suction opening 111 is located, and the moist gas entering from the first air suction opening 111 firstly flows to the corresponding end part under the flow guiding action of the head end baffle plate, and then turns to flow to the first air exhaust opening 112, so that the condensation stroke length of the first air exhaust duct 11 is further prolonged, and the condensation effect is improved; the direction of setting up of the middle baffle between head end baffle and the end baffle all is towards end baffle (being the obtuse angle contained angle between the upstream lateral wall of baffle 113 and corresponding lateral wall) to when guaranteeing that the comdenstion water that forms flows through middle baffle, can smoothly flow down and flow to in the backward flow hole 114 of end baffle department, in order to reduce the middle baffle and to the hindrance that the comdenstion water caused and persist.

Specifically, the cross-sectional projections of all the baffles 113 in the width direction of the first exhaust duct 11 have overlapping portions, so that the flow guiding of the baffles 113 to the condensed water is ensured, the condensed water can flow to the backflow hole 114 on the end baffle and flow back to the inner container through the backflow hole 114, and the damage to the curved wind part and the cabinet lamp caused by the outflow of the condensed water is further reduced.

Specifically, as shown in fig. 2, the backflow hole 114 may protrude outward to form a second boss, the second boss penetrates through a corresponding through hole in the inner container and extends into the inner container, and then the second boss is engaged with the second locking member 33, so that the air duct component 1 is further fixed on the basis of the communication between the backflow hole 114 and the inner container, and the firmness of the air duct component 1 fixed on the inner container is improved. Specifically, an external thread can be arranged on the outer wall of the second boss, the second locking piece 33 is selected and used as a nut, and the nut is in threaded fit with the second boss to achieve locking connection.

In this embodiment, as shown in fig. 2 and fig. 3, the wind-driving part 2 may include a housing 21, a driving mechanism 22, and two impellers 23, where the two impellers 23 are installed inside the housing 21, and the driving mechanism 22 is connected to the impellers 23 and is used for driving the impellers 23 to rotate; the housing 21 is provided with a first air inlet 211 and a first air outlet 212 corresponding to one of the impellers 23, and a second air inlet 213 and a second air outlet 214 corresponding to the other impeller 23, and the first exhaust port 112 is communicated with the first air inlet 211; the second suction opening 121 communicates with the second air outlet 214, or the second air outlet 122 communicates with the second air inlet 213. Here, it is a specific form of the wind-driving component 2, when the dual-duct exhaust device is needed, the driving mechanism 22 is controlled to drive the impeller 23 to rotate, wherein the flow direction of the humid gas in the first exhaust duct 11 is fixed, the impeller 23 drives the humid gas in the liner to sequentially flow through the first air suction port 111, the first exhaust duct 11, the first exhaust port 112 and the first air inlet 211, then flow into the housing 21, and then be exhausted through the first air outlet 212; the flow direction of the low-temperature air in the second exhaust duct 12 includes two conditions: as shown in fig. 1, the second air inlet 121 of the second air exhaust duct 12 is communicated with the second air outlet 214 of the ventilation component 2, and the impeller 23 drives the external air to enter the housing 21 through the second air inlet 213, enter the second air exhaust duct 12 through the second air outlet 214 and the second air inlet 121, and then be exhausted through the second air outlet 122; or, the second air outlet 122 of the second air exhaust duct 12 is communicated with the second air inlet 213 of the wind expelling part 2, and the impeller 23 drives the low-temperature air to flow through the second air inlet 213, the second air exhaust duct 12, the second air outlet 122 and the second air inlet 213 in sequence, then flow into the housing 21, and be exhausted through the second air outlet 214, so that the wind expelling part 2 can drive the air flows in the two air exhaust ducts at the same time.

Specifically, for the first exhaust opening 112 communicated with the first air inlet 211 and the second exhaust opening 121 communicated with the second air outlet 214, the two impellers 23 drive the airflow to flow in opposite directions, two driving mechanisms 22 may be arranged to respectively drive one of the impellers 23 independently, or one driving mechanism 22 may be arranged to synchronously drive the two impellers 23 to rotate synchronously, and the airflow flow in opposite directions is realized by adjusting the arrangement directions, positions and the like of the blades on the impellers 23; for the first exhaust opening 112 communicating with the first air inlet 211 and the second exhaust opening 122 communicating with the second air inlet 213, the two impellers 23 drive the same airflow direction, two driving mechanisms 22 may be provided to drive one of the impellers 23 separately, or one driving mechanism 22 may be provided to drive the two impellers 23 to rotate synchronously.

In this embodiment, as shown in fig. 1 and fig. 2, the air duct component 1 and the housing 21 of the wind-driving component 2 are detachably fixed by a fastener, specifically, the air duct component 1 may be provided with a bayonet joint 13, the wind-driving component 2 is provided with a slot 218, and the slot 218 is matched with the bayonet joint 13. When the air duct component is installed, the clamping joint 13 of the air duct component 1 is pressed and clamped into the clamping groove 218 of the air driving component 2; when the disassembly is needed, the clamping joint 13 is pressed inwards and pulled out forcibly. In order to improve the communication sealing performance between the air duct component 1 and the wind-driving component 2, a third sealing ring 35 may be further disposed at the joint.

In this embodiment, as shown in fig. 3, a partition 215 may be provided in the housing 21, and the partition 215 separates the two impellers 23 into two relatively independent chambers. When the wind-driving part 2 operates, the two impellers 23 are respectively positioned in the relatively independent cavities to rotate, so that mutual independence between two paths of air flows in the wind-driving part 2 is ensured, the wind-driving effect of the wind-driving part 2 is reduced due to the fact that the two paths of air flows are disturbed inside the shell 21, and the temperature reduction and condensation effect of low-temperature air on the humid air is influenced due to the mixed flow of the exhausted humid air and external low-temperature air.

In this embodiment, as shown in fig. 3, the driving mechanism 22 is installed inside the housing 21 and located between the two impellers 23, and the driving mechanism 22 includes two driving ends, and the two driving ends are connected to the two impellers 23 in a one-to-one correspondence manner. Here, the specific arrangement form is that when the driving mechanism 22 is used, the driving mechanism 22 is installed inside the casing 21 between the two impellers 23, and on the basis of realizing synchronous driving of the two impellers 23, on one hand, compared with the case where the driving mechanism 22 is arranged outside, the occupation of space can be reduced; on the other hand, compared with the driving mechanism 22 arranged on one side of the two impellers 23, the driving mechanism 22 has a larger transmission distance to the outer impeller 23, a corresponding torque is larger, the driving shaft is easily damaged, the driving mechanism 22 is arranged between the two impellers 23, the distance between the two driving ends on the two sides of the driving mechanism 22 and the transmission distance between the corresponding impellers 23 is smaller, the driving efficiency of the driving mechanism 22 is higher, and the service life is longer; on the other hand, the housing 21 can protect the driving mechanism 22 to reduce damage to the driving mechanism 22 caused by external factors.

Specifically, as shown in fig. 3, two receiving grooves 216 may be provided inside the housing 21 of the driving mechanism 22, the two partition plates 215 are located between the two partition plates 215, and the driving mechanism 22 is embedded in the receiving grooves 216. The accommodating groove 216 has a limiting effect on the driving mechanism 22, can improve the installation accuracy of the driving mechanism 22, improves the matching accuracy of the driving mechanism 22 and the impeller 23, and can also play a fixing role on the driving mechanism 22 so as to reduce the situations of position deviation and the like caused by vibration of the driving mechanism 22 in the operation process.

In this embodiment, as shown in fig. 2 and 3, a filter cover 217 may be disposed at the second air inlet 213 of the casing 21, and the filter cover 217 may filter the outside air entering the second air inlet 213 to reduce the blockage of the impeller 23 and the like inside the casing 21 caused by impurities in the outside air, so as to ensure the normal use of the wind-driving component 2 and the air duct component 1.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims (10)

1. The double-air-duct exhaust device is characterized by comprising an air duct component (1) and an air driving component (2) which are connected with each other, wherein a first exhaust duct (11) and a second exhaust duct (12) which are mutually independent are arranged in the air duct component (1), a first air suction opening (111) which is used for being communicated with the inside of a dishwasher liner and a first exhaust opening (112) which is used for being communicated with the outside of the dishwasher liner are arranged on the first exhaust duct (11), and a second air suction opening (121) which is used for being communicated with the outside of the dishwasher liner and a second exhaust opening (122) which is used for being communicated with the outside of the dishwasher liner are arranged on the second exhaust duct (12);

the air driving component (2) is used for driving the gas in the inner container to enter the first air exhaust duct (11) through the first air suction opening (111) and to be exhausted through the first air exhaust opening (112); the wind dispelling component (2) is also used for driving gas outside the inner container to flow into the second exhaust duct (12) through the second air suction opening (121) and to be discharged through the second exhaust opening (122).

2. The dual duct exhaust apparatus according to claim 1, wherein the second exhaust duct (12) is enclosed around the periphery of the first exhaust duct (11).

3. The dual-duct exhaust device according to claim 1, wherein a baffle (113) is disposed on an inner wall of the first exhaust duct (11), and the baffle (113) partitions a flow passage of the first exhaust duct (11) into a zigzag shape.

4. The dual duct exhaust apparatus according to claim 3, wherein the first exhaust duct (11) is provided with a return hole (114) capable of communicating with the inside of the inner container, and the return hole (114) is located downstream of the first air suction port (111).

5. The dual-air-duct exhaust device according to claim 4, wherein the number of the baffles (113) is multiple, the baffles (113) are arranged on two opposite side walls of the first exhaust duct (11) in a one-to-one staggered manner along the flowing direction of the first exhaust duct (11), an acute included angle is formed between the baffle (113) at the tail end and the corresponding upstream side wall, and the backflow hole (114) is arranged at the included angle.

6. The dual air duct exhaust device according to any one of claims 1-5, characterized in that the wind-driving member (2) comprises a housing (21), a driving mechanism (22) and two impellers (23), the two impellers (23) being mounted inside the housing (21), the driving mechanism (22) being connected with the impellers (23) for driving the impellers (23) to rotate; the shell (21) is provided with a first air inlet (211) and a first air outlet (212) corresponding to one impeller (23) and a second air inlet (213) and a second air outlet (214) corresponding to the other impeller (23), and the first exhaust port (112) is communicated with the first air inlet (211);

the second air suction opening (121) is communicated with the second air outlet (214), or the second air exhaust opening (122) is communicated with the second air inlet (213).

7. The dual duct exhaust apparatus according to claim 6, wherein a partition (215) is provided in the housing (21), the partition (215) separating the two impellers (23) in two relatively independent chambers.

8. The double-air-duct exhaust device as claimed in claim 6, wherein the number of the driving mechanisms (22) is one, and the driving end of one driving mechanism (22) is connected with the two impellers (23) and can drive the two impellers (23) to rotate synchronously.

9. The dual duct exhaust device according to claim 8, wherein the driving mechanism (22) is installed inside the housing (21) and located between the two impellers (23), and the driving mechanism (22) includes two driving ends, and the two driving ends are connected with the two impellers (23) in a one-to-one correspondence.

10. A dishwasher, comprising a liner and the dual air duct exhaust apparatus of any one of claims 1 to 9, wherein the dual air duct exhaust apparatus is disposed outside the liner, and the first air suction port (111) is communicated with the inside of the liner.