CN108742458B

CN108742458B - Drying device for dish-washing machine and dish-washing machine with same

Info

Publication number: CN108742458B
Application number: CN201810645836.5A
Authority: CN
Inventors: 程亚辉; 朱喜青; 李翔; 蔡思琦
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Washing Appliances Manufacturing Co Ltd
Priority date: 2018-06-21
Filing date: 2018-06-21
Publication date: 2024-02-20
Anticipated expiration: 2038-06-21
Also published as: CN108742458A

Abstract

The invention discloses a drying device for a dish washer and a dish washer with the same, wherein the drying device for the dish washer comprises: the body is internally provided with a heating air channel, the heating air channel is provided with a heating air inlet and a heating air outlet, the heating air inlet is suitable for being communicated with the outside of a washing cavity of the dish washer, and the heating air outlet is suitable for being communicated with the washing cavity; the air duct piece is at least partially defined by the heating air duct and is detachably arranged in the body; the heating device is arranged in the air duct piece; the temperature controller and the heating device are electrically connected with the controller of the dish washer, so that the heating device is controlled to be powered off through the controller when the temperature value sensed by the temperature controller is higher than a preset temperature value. According to the drying device for the dish-washing machine, the temperature of the heating device can be detected through the temperature controller, and when the temperature value sensed by the temperature controller is higher than the preset temperature value, the heating device is controlled to be powered off through the controller, so that the use safety of the dish-washing machine is improved.

Description

Drying device for dish-washing machine and dish-washing machine with same

Technical Field

The invention relates to the technical field of household appliances, in particular to a drying device for a dish washer and the dish washer with the drying device.

Background

In the related art, the place with the highest heat flux (heat flux density) in the heating air channel appears in the area with the largest blocking effect relative to the hot air, namely the turning position of the air channel, so that the high temperature of the heating air channel often appears in the turning position of the heating air channel, and the high temperature easily causes the damage of the condensing air channel due to the low heat resistance of the material of the condensing air channel; when the heating device in the heating air duct works abnormally or other abnormal conditions (the air inlet machine stops running) and the like, the temperature of the heating device rises due to the fact that the heating device cannot radiate heat in time, and the use safety of the dish washer is affected. In addition, the high temperature of heating wind channel transmits to the box of dish washer, and the user scalds easily when touching.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a drying device for a dishwasher, which has an improved safety in use, which is advantageous for improving customer satisfaction.

The invention also proposes a dishwasher comprising a drying device as described above for a dishwasher.

According to an embodiment of the first aspect of the present invention, a drying apparatus for a dishwasher includes: the heating air duct is provided with a heating air inlet and a heating air outlet, the heating air inlet is suitable for being communicated with the outside of a washing cavity of the dish washer, and the heating air outlet is suitable for being communicated with the washing cavity; an air duct member, at least a portion of the heating air duct being defined by the air duct member, the air duct member being detachably disposed within the body; the heating device is arranged in the air duct piece to heat air entering the air duct piece; the temperature controller and the heating device are electrically connected with the controller of the dish washer, so that the heating device is controlled to be powered off through the controller when the temperature value sensed by the temperature controller is higher than a preset temperature value.

According to the drying device for the dish washing machine, provided by the embodiment of the invention, the air entering the air duct piece can be heated through the heating device, so that tableware and the like in the washing cavity can be dried conveniently through hot air, and the customer satisfaction can be improved. In addition, the temperature of the heating device can be detected through the temperature controller, so that the heating device can be controlled to be powered off through the controller when the temperature value sensed by the temperature controller is higher than the preset temperature value, and the use safety of the dish washer can be improved.

In addition, the drying device for a dishwasher according to the above embodiment of the present invention has the following additional technical features:

according to some embodiments of the invention, the thermostat is located adjacent to the heating device.

Further, the heating device comprises a heating body and a wiring terminal connected with the heating body, and the temperature controller is arranged on one side of the heating body, which is away from the wiring terminal.

Further, the temperature controller and the heating body are opposite to each other in the width direction of the air duct piece.

Optionally, at least part of the air duct piece is formed into a double-layer structure, the air duct piece comprises a first layer of shell and a second layer of shell arranged outside the first layer of shell, and the temperature controller is arranged on the first layer of shell; the heat dissipation grid is formed on at least one of the first layer of shell and the second layer of shell, the first layer of shell is a metal piece, and the second layer of shell is a flame-retardant plastic piece.

Further, the air duct member includes: a mounting section within which the heating device fits; one end of the inclined section is connected with the heating air outlet, and a channel which is inclined downwards in the airflow flowing direction in the heating air duct is arranged in the inclined section; the two ends of the transition section are respectively connected between the mounting section and the inclined section, and the transition section is formed into an arc shape protruding outwards in the airflow flowing direction; wherein at least the mounting section is formed with the heat radiation grille.

Optionally, the wind channel piece is last to be equipped with dodge the breach of dodging of wiring end, dodge the breach and include: the first avoidance notch is formed on the first layer of shell; the second avoidance notch is formed on the second layer of shell and corresponds to the first avoidance notch; the wiring end is further sleeved with a supporting piece, and the wiring end is arranged at the avoidance notch through the supporting piece.

According to some embodiments of the invention, a plurality of limiting blocks are arranged in the body, and the air duct piece is clamped in limiting grooves defined by the limiting blocks.

According to some embodiments of the invention, one end of the air duct piece is connected with a drying fan, and the other end of the air duct piece is connected with the heating air outlet, and the heating device is positioned downstream of the drying fan in the airflow flowing direction of the heating air duct.

According to a second aspect of the present invention, a dishwasher according to an embodiment includes: a case; the inner container is arranged in the box body and defines the washing cavity; and the drying device is arranged at the outer side wall of the inner container, and the drying device is the drying device for the dish washer.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a portion of a dishwasher according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of a structure of a drying apparatus for a dishwasher according to an embodiment of the present invention, in which arrows are directed to represent a flow direction of air;

FIG. 3 is another schematic view of a portion of a drying apparatus for a dishwasher according to an embodiment of the present invention;

fig. 4 is an exploded view of a part of a structure of a drying device for a dishwasher according to an embodiment of the present invention;

fig. 5 is another exploded view of a part of a structure of a drying device for a dishwasher according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at circle M;

FIG. 7 is still another schematic view of a portion of a drying apparatus for a dishwasher according to an embodiment of the present invention;

FIG. 8 is an enlarged view of a portion of FIG. 7 at circle N;

fig. 9 is a schematic view of a mounting part in a drying apparatus for a dish washer according to an embodiment of the present invention.

Reference numerals:

a drying device 100 for a dishwasher,

the body 1, the heating air duct 11, the heating air inlet 111, the heating air outlet 112,

the air duct member 2 is provided with a pair of air ducts,

the first layer housing 21, the first sub-housing 211, the first fastening portion 2111, the first fastening groove 2112, the first bottom wall 2113, the first side wall 2114, the first escape notch 212,

the second layer of the housing 22, the second sub-housing 221, the second fastening portion 2211, the second fastening groove 2212, the second bottom wall 2213, the second side wall 2214, the second avoiding notch 222,

mounting section 23, inclined section 24, transition section 25, relief notch 26, heat dissipating bead 27, heat dissipating grill 28, pre-positioning portion 29, inclined portion 291, horizontal portion 292, mounting portion 20,

Heating device 3, heating body 31, terminal 32, drying fan 4, support 5, temperature controller 6, body 61, mounting lugs 62, through hole 621, fastener 7,

dishwasher 200, liner 210, wash chamber 2101.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

A drying device 100 for a dish washer according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 9, a drying device 100 for a dishwasher according to an embodiment of a first aspect of the present invention includes: a body 1, an air duct member 2 and a heating device 3.

Specifically, referring to fig. 1 and 2, a heating air duct 11 is defined in the body 1, the heating air duct 11 having a heating air inlet 111 and a heating air outlet 112, the heating air inlet 111 being adapted to communicate with the outside of the washing chamber 2101 of the dishwasher 200, and the heating air outlet 112 being adapted to communicate with the washing chamber 2101. Thereby, it is convenient to introduce external air into the washing chamber 2101 through the heating air inlet 111 via the heating air outlet 112.

At least part of the heating tunnel 11 is defined by the tunnel member 2, for example, only part of the structure of the heating tunnel 11 is shown in the drawings, and in some embodiments, the heating tunnel 11 may further include a condensation tunnel or the like, which may be provided within the body 1.

The air duct member 2 is detachably provided in the body 1. For example, the air duct member 2 may be provided in the body 1 by means of a snap-fit or screw connection, etc., thereby facilitating the mounting and dismounting of the air duct member 2 on the body 1.

A heating device 3 is provided in the air channel member 2 to heat the air entering the air channel member 2. The air entering the air duct member 2 can be heated by the heating device 3, so that the washing chamber 2101 can be dried by hot air.

Typically, hot air is introduced into the wash chamber 2101 after the dishwasher 200 has completed washing the dishes to dry the dishes. In some embodiments of the present invention, the air entering the duct member 2 may be heated by the heating device 3 and then introduced into the washing chamber 2101 to dry the dishes in the washing chamber 2101.

It can be appreciated that the hot air in the heating duct 11 can dry the tableware in the washing chamber 2101 after entering the washing chamber 2101, thereby improving the user satisfaction.

In addition, during the operation of the dishwasher 200, a large amount of high-temperature and high-humidity air is generated in the washing chamber 2101, and if the air is directly discharged to the outside of the washing chamber 2101, the dishwasher 200 continuously discharges the high-temperature and high-humidity air in the operation engineering, so that the customer experience degree is greatly reduced, and therefore, by arranging the condensation air duct in the body 1, the high-temperature and high-humidity air discharged from the washing chamber 2101 can be further discharged after being condensed.

The air condensed by the condensing air duct in the inner container 210 may be directly discharged to the outside of the box (referred to as external circulation), or the air in the portion may be further communicated with the inlet (e.g. the heating air inlet 111) of the heating air duct 11, and then conveyed back to the inner container 210 after being heated (referred to as internal circulation).

For example, the condensation duct may be located upstream of the duct element 2, where a heat exchanger is provided. It will be appreciated that the heating means 3 may heat the air flow passing through the heat exchanger such that the air flow entering the interior of the washing chamber 2101 from the heating outlet 112 has a higher temperature, thereby improving the drying efficiency of the dishes within the washing chamber 2101.

According to the drying device 100 for a dishwasher of the embodiment of the present invention, the air introduced into the air duct member 2 can be heated by the heating device 3, so that the tableware and the like in the washing chamber 2101 can be dried by the hot air, which is advantageous for improving customer satisfaction.

In the related art dishwasher, the tableware in the washing chamber needs to be dried after the tableware is washed, so that the heating element is arranged in the drying device, however, the heating element is directly arranged in the heating air channel of the drying device, so that the heating element is easily damaged, and the heating air channel is heated unevenly, so that the heating air channel is damaged.

In order to solve the above technical problems, in some embodiments, at least part of the air channel member 2 may be formed in a double-layered structure, the air channel member 2 includes a first layer housing 21 and a second layer housing 22, and the second layer housing 22 may be disposed outside the first layer housing 21. Therefore, at least part of the air duct piece 2 is of a double-layer structure, so that heat transfer is reduced, and the temperature outside the air duct piece 2 is reduced.

Wherein, at least part of the second layer housing 22 may be formed in a double layer structure, whereby an air layer between the double layer structure may reduce a heat conductivity coefficient, reduce a temperature outside the air channel member 2, and may also improve structural strength of the air channel member 2.

In some embodiments, the first layer housing 21 may be a metal piece and at least a portion of the second layer housing 22 may be a flame retardant plastic piece. This not only facilitates heat transfer but also improves the reliability of use of the air channel member 2.

In addition, since the heat resistance of the material of the condensation duct is not high, by setting at least part of the duct member 2 to be a double-layer structure, it is also advantageous to protect the condensation duct from being damaged by the influence of high temperature.

In addition, when the drying device 100 is applied to the dishwasher 200, it is advantageous to reduce the amount of heat transferred from the drying device 100 to the cabinet of the dishwasher 200, so that it is possible to prevent the temperature of the cabinet from being excessively high, thereby reducing the risk of scalding the user.

For example, the high temperature portion of the air channel member 2 may be formed in a double layer structure. Specifically, since the place of the heating tunnel 11 where the heat flux (heat flux density) is highest occurs at the area where the blocking effect against the hot air is largest, i.e., the tunnel corner, the high temperature of the heating tunnel 11 tends to occur at the corner of the heating tunnel 11, as in the area P shown in fig. 3. Through the double-deck structure of department design in the high temperature, can effectively reduce the temperature of here wind channel piece 2 lateral wall, can also play the effect of strengthening structural strength simultaneously to can effectively solve the higher problem of the outside local temperature of heating wind channel 11, improve the security of drying device 100.

Of course, in some embodiments, the whole of the air duct member 2 may be provided as a double-layer structure; a heat insulating member and the like can be arranged between the air duct member 2 and the heating device 3; in some embodiments, the risk of scalding the user can be further reduced by the cooperation of the air duct member 2 with the heat insulating member in a double-layer structure.

According to the drying device 100 for the dish washer, provided by the embodiment of the invention, at least part of the air duct piece 2 is of a double-layer structure, and the heat conductivity coefficient of the air layer in the middle can be reduced, so that the heat transfer is reduced, the temperature of the outer side of the air duct piece 2 is reduced, and the risk of scalding a user is reduced.

In some embodiments, referring to fig. 4, the air duct member 2 may further be provided with an outwardly protruding heat dissipating rib 27. For example, the air duct member 2 may further be provided with heat dissipating ribs 27, and the heat dissipating ribs 27 may protrude outward from the outer surface of the air duct member 2. When the drying device 100 is applied to the dish washer 200, heat can be dissipated through the heat dissipation ribs 27, and a gap is formed between the outer surface of the air duct member 2 and the inner wall surface of the box body of the dish washer 200, so that compared with the case body of the dish washer 200, the heat transferred to the box body can be reduced, the case body can be prevented from being too high in temperature, and the risk of scalding a user can be reduced.

Wherein, the heat dissipation ribs 27 may be provided at an outer wall surface of a side of the air channel member 2 contacting the case, the heat dissipation ribs 27 may include a plurality, and the plurality of heat dissipation ribs 27 may be arranged at intervals. In the description of the present invention, "plurality" means two or more.

Through the outside design outside at the high temperature department of wind channel piece 2 outwards convex heat dissipation protruding muscle 27, can make this high temperature region reduce with the area of contact of the box of dish washer 200, effectively avoid the risk that the regional temperature of box is too high, can also play the effect of strengthening here structural strength simultaneously, effectively solve the outside local higher problem of temperature of heating wind channel 11, improve drying device 100's security.

According to the drying device 100 for a dish washer, provided by the embodiment of the invention, the heat dissipation ribs 27 are arranged on the outer side of the air duct piece 2, so that a gap is formed between the outer surface of the air duct piece 2 and the inner wall surface of the box body of the dish washer 200, and compared with the case that the outer surface of the air duct piece 2 is directly contacted with the box body of the dish washer 200, the drying device is beneficial to reducing the heat transferred to the box body, thereby preventing the temperature of the box body from being too high and reducing the risk of scalding a user.

In some embodiments, the drying device 100 for a dishwasher may further include a temperature controller 6, and both the temperature controller 6 and the heating device 3 are electrically connected to a controller of the dishwasher 200, and the temperature of the heating device 3 may be detected through the temperature controller 6, thereby controlling the heating device 3 to be powered off through the controller when the temperature value sensed by the temperature controller 6 is higher than a preset temperature value, thereby being advantageous for improving the use safety of the dishwasher 200.

Specifically, when the heating device 3 is abnormal in operation or other abnormal conditions (the air inlet machine stops running), and the like, the temperature of the heating device 3 rises due to the fact that heat cannot be dissipated in time, and by installing the temperature controller 6, when the temperature value sensed by the temperature controller 6 is higher than the set action temperature (can be set as required), the temperature controller 6 cuts off the power supply of the heating device 3, so that the use safety of the drying device 100 is guaranteed. The installation manner and the installation position of the temperature controller 6 directly influence the reaction precision of the temperature controller 6, thereby influencing the safety of the drying device 100 and further influencing the safety of the dish washer 200.

As shown in fig. 3 and 7, by assembling the thermostat 6 at a position next to the heating device 3, the sensing accuracy of the thermostat 6 can be effectively improved, thereby contributing to an improvement in the safety of the drying device 100.

According to the drying device 100 for the dish washer, provided by the embodiment of the invention, the temperature of the heating device 3 can be detected through the temperature controller 6, so that the heating device 3 can be controlled to be powered off through the controller when the temperature value sensed by the temperature controller 6 is higher than the preset temperature value, and the use safety of the dish washer 200 is improved.

With reference to fig. 4, a double-layer protection (a first layer of shell 21 and a second layer of shell 22) is provided outside the heating device 3, the first layer of shell 21 has the function of fixing and protecting the heating device 3 (preferably made of metal), the second layer of shell 22 has the function of fixing and protecting the heating device 3 and the temperature controller 6, and the heat dissipation ribs 27 protruding outwards are arranged on the outer side wall of the second layer of shell 22, so that the drying device 100 can be in contact with the box of the dish washer 200 through the heat dissipation ribs 27, the contact area can be reduced, the temperature of the box can be reduced, and the risk of scalding users can be reduced.

In addition, the second-layer housing 22 may be partially (for example, the second-layer housing 22 is disposed at the position corresponding to the heating device 3) in a grid structure, so that not only materials can be saved, but also the surface heat of the first-layer housing 21 can be timely dissipated, so that the use safety is good. The second-layer housing 22 may be partially provided with a double-layer structure, for example, the ring P in fig. 3 may be provided with a double-layer structure, and the double-layer structures are spaced apart to form a gap, so that the heat conductivity coefficient can be reduced, the heat transfer can be reduced, and the structural strength of the second-layer housing 22 can be improved.

The heating duct 11 is configured as shown in fig. 2 to ensure the safety of the drying device 100, so that the safety of the drying device 100 at a certain temperature can be ensured, and the heating duct 11 has simple installation characteristics, wherein the heating duct 11 comprises three parts (an installation section 23, an inclined section 24 and a transition section 25).

The first portion (e.g. the mounting section 23) is a first layer of housing 21 for fixing and protecting the heating device 3, and the first layer of housing 21 may be made of a metal material with a certain corrosion resistance, such as a galvanized sheet.

The second part (for example, the transition section 25) is a second layer of shell 22 with the fixing and protecting heating device 3 and temperature controller 6, and is also a turning area of the heating air duct 11 (here, the air duct high temperature area, the place with the highest heat flux in the heating air duct 11 appears in the area with the largest blocking effect relative to the hot air, namely, the air duct turning place, refer to the circle P in fig. 3), the same material as the first layer of shell 21 can be adopted, and the plastic with good flame retardant property, such as PBT (flame retardant grade VO) can be adopted for saving materials. Wherein, PBT is polybutylene terephthalate, another name is polytetramethylene terephthalate, and an English name polybutylene terephthalate belongs to polyester series.

The third portion (e.g., the sloped section 24) is a lower temperature region where the structure is relatively complex relative to the first two portions due to the assembly with the liner 210, and is made of PP + GF (GF content may be 20% -40%; preferably GF content is 30%).

Polypropylene, english name: polypropylene (PP) is a thermoplastic resin produced by polymerization of propylene. GF is the first letter of glass fiber, the chinese name glass fiber, glass fiber for short. PP is polypropylene plastic, GF+PP is glass fiber-added polypropylene material. The pure PP material has poor rigidity, strength and heat resistance, and can improve the defects after glass fiber is added. PP materials are generally used for common daily plastic products, while GF+PP materials are used for household appliances, automobile parts, hardware tools and other products.

For example, PP+20% GF has high flow, and the addition of 30% GF makes it highly rigid, dimensionally stable, and ideal for structural members, radiator fans, and pressure housings.

Therefore, the heating air duct 11 is divided into three parts according to the functions and the characteristics of different parts, and different materials are respectively adopted, so that the safety characteristics of the heating air duct 11 can be effectively solved, and meanwhile, the heating air duct has better processing characteristics and the cost is reduced.

In some embodiments, the drying device 100 for a dishwasher may further include a thermostat 6, both the thermostat 6 and the heating device 3 being electrically connected to a controller of the dishwasher 200, and the thermostat 6 being detachably connected to the air duct member 2. Thereby, the temperature controller 6 is convenient to be mounted and dismounted on the air duct member 2.

Specifically, when the heating device 3 is abnormal in operation or other abnormal conditions (the air inlet machine stops running), and the like, the temperature of the heating device 3 rises due to the fact that heat cannot be dissipated in time, the temperature controller 6 is installed, the temperature controller 6 is detachably connected with the air duct piece 2, and when the temperature value sensed by the temperature controller 6 is higher than the set action temperature, the temperature controller 6 cuts off the power supply of the heating device 3, so that the use safety of the drying device 100 is guaranteed.

According to some embodiments of the present invention, a plurality of limiting blocks may be disposed in the body 1, and the air duct member 2 may be clamped in a limiting groove defined by the plurality of limiting blocks. Therefore, the air duct piece 2 is easy to install and detach in the body 1 through the matching of the limiting block and the limiting groove.

The invention does not limit the specific structures of the limiting block and the limiting groove, and the specific arrangement is that the limiting block is matched with the limiting groove and the reliable installation of the air duct piece 2 in the body 1 is realized.

Referring to fig. 1 and 2, according to some embodiments of the present invention, a drying fan 4 is connected to one end of the duct member 2 and the other end is connected to a heating air outlet 112, and the heating device 3 is located downstream of the drying fan 4 in the airflow direction of the heating duct 11. It will be appreciated that the drying blower 4 can accelerate the air flow in the heating tunnel 11, thereby advantageously improving the drying efficiency of the dishwasher 200.

It will be appreciated that the heating means 3 is capable of heating the air flow output by the drying blower 4 so that the air flow entering the interior of the washing chamber 2101 has a higher temperature, thereby contributing to an improved drying efficiency of the dishes inside the washing chamber 2101.

It should be noted that if the heating device 3 is disposed upstream of the drying fan 4, that is, the heated air flows to the heating air outlet 112 under the driving of the drying fan 4, a certain temperature drop occurs when the heated air flows contacts the fan housing and the impeller of the drying fan 4, which is disadvantageous for improving the drying effect of the drying device 100.

Furthermore, in some embodiments, the heating device 3 is detachably connected to the air channel member 2. Thereby, the replacement, maintenance and protection of the heating device 3 are facilitated by detachably mounting the heating device 3 on the air channel member 2.

Further, referring to fig. 2, the heating duct 11 is formed as a passage inclined downward in the flow direction of the air flow in the heating duct 11 adjacent to the heating air outlet 112 to prevent the washing water in the washing chamber 2101 from flowing back into the heating duct 11.

It will be appreciated that, since the heating air outlet 112 is directly connected to the washing chamber 2101, a backflow phenomenon into the heating duct 11 may occur when the water level in the washing chamber 2101 is too high.

For this reason, in the drying apparatus 100 of the present invention, since the heating tunnel 11 is formed adjacent to the heating outlet 112 as a passage inclined downward in the flow direction of the air flow in the heating tunnel 11. For example, when the water in the washing chamber 2101 enters the heating air duct 11, the water in the washing chamber 2101 flows back into the washing chamber 2101 due to the inclined angle of the heating air duct 11 adjacent to the heating air outlet 112, so that the phenomenon of water accumulation at the heating air outlet 112 is avoided.

According to the drying device 100 for a dish washer of the embodiment of the invention, as the heating air duct 11 is formed as the channel which is inclined downwards in the airflow flowing direction in the heating air duct 11 near the heating air outlet 112, the function that the washing water entering the washing cavity 2101 from the heating air outlet 112 flows back to the washing cavity 2101 is realized, and the phenomenon of water accumulation in the heating air duct 11 is avoided, so that the airflow flow in the heating air duct 11 can be ensured, and the drying efficiency of the drying device 100 can be improved to a certain extent.

Referring to fig. 4, according to some embodiments of the present invention, the first layer housing 21 includes two first sub-housings 211, a first fastening portion 2111 is formed on one of the two first sub-housings 211, and a first fastening groove 2112 is formed on the other of the two first sub-housings 211, the first fastening groove 2112 is matched with the first fastening portion 2111, and the first fastening portion 2111 is fastened with the first fastening groove 2112 to fasten the two first sub-housings 211.

The second layer of the housing 22 includes two second sub-housings 221, one of the two second sub-housings 221 is formed with a second fastening portion 2211, and the other of the two second sub-housings 221 is formed with a second fastening portion 2212, the second fastening portion 2212 is matched with the second fastening portion 2211, and the second fastening portion 2211 is fastened with the second fastening portion 2212 so that the two second sub-housings 221 are fastened.

Therefore, the first layer shell 21 and the second layer shell 22 are arranged to be of a split structure, so that the first layer shell 21 and the second layer shell 22 can be conveniently assembled, the installation and the disassembly of the heating device 3 are facilitated, and the manufacturability is good.

It will be appreciated that if the duct member 2 is directly designed into an integrally formed box-like shape with a passage, such a structure is disadvantageous for the installation of the heating device 3, and the production process is complicated, and damage is easily generated under the action of external force.

In the embodiment of the present invention, the air duct member 2 has a double-layer structure (for example, the air duct member 2 includes a first layer housing 21 and a second layer housing 22), the first layer housing 21 may be embedded in the second layer housing 22, the first layer housing 21 includes two first sub-housings 211, and the two first sub-housings 211 are buckled (e.g., clamped, etc.) to form the first layer housing 21; the second-layer housing 22 includes two second sub-housings 221, and the two second sub-housings 221 are fastened (e.g., clamped, etc.) to form the second-layer housing 22, so that the installation of the heating device 3 is convenient, the shaking of the heating device 3 can be prevented, in addition, the production process of the air duct member 2 can be simplified to a certain extent, and the production cost of the air duct member 2 can be reduced.

Of course, in other embodiments of the present invention, the two first sub-housings 211 (or the two second sub-housings 221) may also be connected by a screw, a connection pin, or the like.

Further, referring to fig. 3 and 4, the heating device 3 includes a heating body 31 and a terminal 32, the terminal 32 is connected with the heating body 31, the air duct member 2 is provided with an avoidance notch 26, the avoidance notch 26 can avoid the terminal 32, the terminal 32 is convenient to extend out of the air duct member 2 through the avoidance notch 26, and the combination is reasonable and the manufacturability is good.

The avoidance gap 26 includes: a first avoidance gap 212 and a second avoidance gap 222, the first avoidance gap 212 may be formed on the first layer housing 21; the second avoidance gap 222 may be formed on the second-layer case 22, and the second avoidance gap 222 may correspond to the first avoidance gap 212.

Here, in fig. 4, the air duct member 2 is in an exploded state, and positions of the first escape recess 212 and the second escape recess 222 are schematically shown in fig. 4.

Further, referring to fig. 4 and 7, the terminal 32 is further sleeved with a supporting member 5, and the terminal 32 is arranged at the avoiding notch 26 through the supporting member 5. Thereby, the portion of the terminal 32 connected to the air channel member 2 can be supported by the support member 5, thereby facilitating the protection of the terminal 32 and the improvement of the reliability of the use of the heating device 3.

The support member 5 may be, for example, an insulating member, etc., so that the terminal 32 is insulated from the duct member 2, which is safe and advantageous for improving the reliability of the drying apparatus 100.

Alternatively, in conjunction with fig. 4 and 2, each of the first sub-housings 211 includes: the first bottom wall 2113 and the first side walls 2114, the first side walls 2114 including two, and the two first side walls 2114 may be arranged opposite and spaced apart in the AB direction shown in fig. 4, the first side walls 2114 being provided on both sides of the first bottom wall 2113 in the width direction (refer to the AB direction shown in fig. 4) and extending in the length direction of the first bottom wall 2113 (refer to the arrow direction of the airflow flow shown in fig. 2).

Wherein, a first sub-avoidance gap suitable for avoiding the terminal 32 is formed on one of the two first side walls 2114, and when the two first sub-housings 211 are buckled, the two first sub-avoidance gaps cooperate to define the first avoidance gap 212.

The first fastening portions 2111 and the first fastening grooves 2112 are formed on the first side wall 2114, the first fastening portions 2111 include a plurality, and the plurality of first fastening portions 2111 are spaced apart along the length direction of the first side wall 2114, and the first fastening grooves 2112 are in one-to-one correspondence with the first fastening portions 2111. Thus, the fitting and removal between the two first sub-housings 211 is easily achieved by the fitting of the first clamping groove 2112 and the first clamping portion 2111.

Further, referring to fig. 4, each of the second sub-housings 221 includes: the second bottom wall 2213 and the second side wall 2214, the second side wall 2214 includes two, and the two second side walls 2214 are arranged opposite to and spaced apart from each other, and the second side walls 2214 are provided on both sides of the second bottom wall 2213 in the width direction and extend in the length direction of the second bottom wall 2213.

Wherein, a second sub-avoidance gap is formed on one of the two second side walls 2214, the second sub-avoidance gap corresponds to the first sub-avoidance gap, and when the two second sub-housings 221 are buckled, the two second sub-avoidance gaps cooperate to define a second avoidance gap 222.

The second fastening portions 2211 and the second fastening grooves 2212 are formed on the second side wall 2214, the second fastening portions 2211 include a plurality of second fastening portions 2211, and the plurality of second fastening portions 2211 are spaced apart along a length direction of the second side wall 2214 (for example, an extending direction of the air duct member 2), and the second fastening grooves 2212 are in one-to-one correspondence with the second fastening portions 2211. Thus, the second latching portion 2211 is engaged with the second latching portion 2212, so that the mounting and dismounting between the two second sub-housings 221 can be easily performed.

Here, the first sub-housing 211 and the second sub-housing 221 may be formed substantially in a U shape, an H shape, or the like in the extending direction perpendicular to the air channel member 2.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", etc. are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 2 and 3, according to some embodiments of the invention, the air duct member 2 includes: a mounting section 23, an inclined section 24 and a transition section 25.

In particular, the heating device 3 may be fitted within the mounting section 23. Thereby, the mounting of the heating device 3 in the air duct element 2 is facilitated by the mounting section 23.

One end of the inclined section 24 is connected with the heating air outlet 112, and a channel which is inclined downwards in the air flow direction in the heating air duct 11 is arranged in the inclined section 24; the transition section 25 is formed in an arc shape protruding outwardly in the flow direction of the air flow (refer to the arrow direction in fig. 3) with both ends thereof connected between the mounting section 23 and the inclined section 24, respectively.

Wherein at least the mounting section 23 is constructed as a double layer structure. For example, by constructing the installation section 23 provided with the heating device 3 into a double-layer structure, the heat transmitted to the outer wall of the installation section 23 by the heating device 3 can be reduced, the user scald caused by the overhigh temperature of the outer wall surface of the air duct piece 2 is avoided, the structural strength of the air duct piece 2 is improved, and the use safety of the heating device 3 is ensured.

It will be appreciated that the inclined section 24 is provided with a passage inclined downwardly in the direction of flow of the air flow in the heating duct 11, whereby the function of returning the washing water introduced into the washing chamber 2101 from the heating air outlet 112 to the washing chamber 2101 can be achieved. The transition section 25 is formed in an arc shape protruding outward in the air flow direction, so that the function of backflow of the washing water entering the washing chamber 2101 from the heating air outlet 112 to the washing chamber 2101 can be realized when the water level in the washing chamber 2101 is further increased.

Advantageously, the angle a of the inclined section 24 with respect to the horizontal satisfies the following relationship 30A 60. Thereby, the washing water flowing into the inclined section 24 is facilitated to flow back into the washing chamber 2101. Of course, the designer may also design the range of the angle a between the inclined section 24 and the horizontal according to the actual situation.

For example, the angle a of the inclined section 24 with respect to the horizontal line may be 30 °, 45 °, 60 °, or the like.

Of course, in other embodiments of the invention, the mounting section 23, the angled section 24 and the transition section 25 may be shaped as desired. The inclined section 24 and the transition section 25 may also be formed in a double-layered structure.

In some embodiments, the sloped section 24 may be connected to the inner bladder 210 by a connecting tube.

Referring to fig. 3 and 4, according to some embodiments of the present invention, the air duct member 2 is provided with a heat dissipating rib 27, and the heat dissipating rib 27 may be formed on a side of the air duct member 2 adjacent to the tub of the dishwasher 200, and the air duct member 2 is formed with a heat dissipating grill 28 opposite to the heating device 3. Thereby, the heat transferred to the tub of the dishwasher 200 is advantageously reduced by the heat radiation ribs 27, so that the local temperature can be prevented from being excessively high; the heat generated by the heating device 3 can be rapidly dissipated by the heat dissipating grill 28, thereby advantageously avoiding damage due to local overheating of the first layer housing 21 and the second layer housing 22.

Further, referring to fig. 4 in combination with fig. 3, heat dissipating ribs 27 may be formed at the outer side wall of the transition section 25. Since the P is a high temperature region in fig. 3, the contact area between the transition section 25 and the cabinet of the dishwasher 200 can be reduced by providing the heat dissipation ribs 27 therein, so that excessive heat transfer to the cabinet can be avoided, thereby being beneficial to reducing the risk of scalding the user when the user touches the cabinet.

Referring to fig. 4, the heat dissipating bead 27 includes a plurality of heat dissipating beads 27, and the plurality of heat dissipating beads 27 may be formed at the outer side of the second bottom wall 2213 with the plurality of heat dissipating beads 27 being disposed at intervals. The plurality of heat dissipation ribs 27 may be formed at any position of the outer wall surface of the second bottom wall 2213, and when the drying device 100 is applied to the dishwasher 200, the air channel member 2 may be in contact with the casing of the dishwasher 200 through the heat dissipation ribs 27, so that the contact area may be reduced, and excessive heat transfer to the casing is avoided, thereby being beneficial to reducing the risk of scalding the user when the user touches the casing.

Wherein, the outer side of the second layer housing 22 is formed with heat dissipating ribs 27, and at least one of the first layer housing 21 and the second layer housing 22 is formed with a heat dissipating grill 28. Therefore, the heat generated by the heating device 3 can be dispersed through the heat radiation grille 28, and the heat transferred to the box body of the dish washer 200 can be further reduced through the heat radiation ribs 27, so that the user scalding caused by the overhigh temperature of the box body can be avoided, and the use safety of the dish washer 200 is further improved.

For example, the heat radiation grille 28 may be formed on the first-layer case 21, the heat radiation grille 28 may be formed on the second-layer case 22, or the heat radiation grille 28 may be formed in both the first-layer case 21 and the second-layer case 22. Preferably, the heat radiation grill 28 may be formed at the first layer housing 21 and/or the second layer housing 22 opposite to the heating device 3.

Wherein at least the mounting section 23 is formed with a heat dissipating grill 28. Since the heating device 3 is installed at the installation section 23, it is advantageous to rapidly disperse heat by providing the heat radiation grille 28 at the installation section 23, so that it is possible to prevent the drying device 100 from being disabled due to the local excessive temperature.

Of course, in some embodiments, a heat sink grill 28 may also be formed at the inclined section 24 and the transition section 25.

Further, the mounting section 23 may be a metal piece, and a heat radiation grill 28 is formed at the mounting section 23. Thereby, by setting the mounting section 23 as a metal piece, the heat transfer is facilitated, and by forming the heat radiation grille 28 at the mounting section 23, the heat generated by the heating device 3 can be timely dispersed through the heat radiation grille 28, thereby being beneficial to avoiding the failure of the drying device 100 due to the local overheat of temperature.

Alternatively, the transition section 25 is a metal piece or a flame retardant plastic piece and the inclined section 24 is a plastic piece. The air duct member 2 is made of a heat-resistant and flame-retardant material (such as PBT material), so that the heating device 3 is arranged in the heating air duct 11, and the heating air duct 11 is prevented from being damaged due to local overheating.

Further, a bracket (not shown) is provided in the air channel member 2, through which the heating device 3 can be provided in the air channel member 2. Thereby, the mounting of the heating device 3 in the air duct member 2 is facilitated by the bracket, and the heat transferred to the outer side wall of the air duct member 2 is reduced.

Here, the present invention is not limited to the specific structure of the holder, and the holder may be provided so as to be capable of effectively supporting the heating device 3.

The temperature controller 6 and the heating device 3 are electrically connected with the controller of the dish washer 200, and the temperature of the heating device 3 can be detected through the temperature controller 6, so that the heating device 3 can be controlled to be powered off through the controller when the temperature value sensed by the temperature controller 6 is higher than a preset temperature value, and the use safety of the dish washer 200 is improved.

In some embodiments, the thermostat 6 is detachably connected to the air channel member 2. Thereby, the temperature controller 6 is convenient to be mounted and dismounted on the air duct member 2. Alternatively, referring to fig. 4, the thermostat 6 is detachably provided on the first-layer housing 21.

The installation mode and the installation position of the temperature controller 6 directly influence the reaction precision of the temperature controller 6, thereby influencing the safety of the drying device 100 and further influencing the safety of the dish washer 200.

According to some embodiments of the invention, a thermostat 6 is provided adjacent to the heating device 3. Thus, by arranging the temperature controller 6 adjacent to the heating device 3, the temperature of the heating device 3 can be detected more accurately by the temperature controller 6, and the sensitivity improves.

Further, referring to fig. 3 and 7, the thermostat 6 may be provided at a side of the heating body 31 facing away from the terminal 32. Thus, the temperature controller 6 is convenient to install, the temperature of the heating device 3 can be accurately detected, and the use safety is ensured.

For example, in the example of fig. 3, the terminal 32 may be provided on the B side of the heating body 31, and the thermostat 6 is provided on the a side of the heating body 31.

Further, referring to fig. 3, the thermostat 6 may be directly opposite to the heating body 31 in the width direction of the air channel member 2. The width direction of the air duct member 2 may refer to the AB direction shown in fig. 3, wherein the thermostat 6 is provided at the a side of the heating body 31, the terminal 32 is provided at the B side of the heating body 31, and the thermostat 6 and the terminal 32 may face each other in the AB direction, and at this time, the thermostat 6 is provided closely to the heating body 31, so that the sensitivity of temperature detection of the thermostat 6 may be further improved, thereby being advantageous in ensuring the use safety of the dishwasher 200.

Referring to fig. 4 and 5, the thermostat 6 includes: the body 61 and the mounting lugs 62.

Specifically, the mounting lugs 62 are provided at the periphery of the end portion of the body portion 61, and the mounting lugs 62 include two, and the thermostat 6 can be connected to the air channel member 2 through the mounting lugs 62. Thereby, the assembly between the temperature controller 6 and the air duct member 2 is facilitated by the mounting lugs 62.

Further, referring to fig. 5 to 8, through holes 621 are formed in the mounting lugs 62, and the through holes 621 may penetrate the mounting lugs 62 in the thickness direction, and the through holes 621 may be configured as, for example, circular, elliptical, oblong, polygonal, or the like.

Specifically, the air duct member 2 may be formed with a pre-positioning portion 29 and a mounting portion 20, wherein one through hole 621 is connected to the pre-positioning portion 29 to pre-position the thermostat 6 to the air duct member 2, and the other through hole 621 is matched to the mounting portion 20 to connect the thermostat 6 to the air duct member 2. Thereby, the fitting connection between the thermostat 6 and the air channel member 2 is easily achieved by the pre-positioning portion 29 and the mounting portion 20.

Further, referring to fig. 5 to 8, the pre-positioning portion 29 is a hook protruding outwards from the air duct member 2, and the hook includes: the inclined portion 291 and the horizontal portion 292, the inclined portion 291 being connected to the air channel member 2; the horizontal portion 292 is provided at the free end of the inclined portion 291, and the horizontal portion 292 may extend in a direction parallel to the longitudinal direction of the duct member 2 (refer to the up-down direction shown in fig. 5).

Wherein, a U-shaped opening is defined between the hook and the air duct piece 2, and one of the through holes 621 is adapted to pass through the horizontal portion 292 and be clamped at the U-shaped opening. Thus, the temperature controller 6 is easily positioned on the air duct piece 2 by the clamping hooks.

Here, the inclined portion 291 may be formed as an arc surface, and a transition rounded corner may be formed between the inclined portion 291 and the horizontal portion 292, which is good in manufacturability and convenient in assembly.

The above description of the pre-positioning portion 29 is illustrative only and is not to be construed as limiting the invention, and in some embodiments, the pre-positioning portion 29 may be formed in other configurations such as tapered positioning posts, etc.

In some embodiments, referring to fig. 5 and 7, the mounting portion 20 is a mounting hole that may penetrate the air channel member 2 in the thickness direction, and the fastener 7 is adapted to penetrate the other through hole 621 and the mounting hole to connect the thermostat 6 with the air channel member 2. Thereby, the assembly between the temperature controller 6 and the air duct member 2 is easily realized through the hooks and the mounting holes.

The present invention is not limited thereto, and in some embodiments, referring to fig. 9, the mounting portion 20 may also be a clamping portion, the clamping portion being matched with the through hole 621, and the other through hole 621 being adapted to be clamped with the clamping portion to connect the thermostat 6 with the air duct member 2. Therefore, the temperature controller 6 and the air duct piece 2 are easy to assemble through the clamping hooks and the clamping parts.

Further, with reference to fig. 9, in the assembling direction of the thermostat 6 and the air channel member 2, the engaging portion is configured in a tapered shape with a gradually increasing radial dimension. For example, in the FE direction shown in fig. 9, the engagement portion is configured in a tapered shape with a gradually increasing radial dimension. In the assembling direction of the thermostat 6 and the air duct member 2 (e.g., FE direction shown in fig. 9), the through hole 621 is easily engaged with the engaging portion; in the direction of detachment of the thermostat 6 from the air channel member 2 (e.g., EF direction shown in fig. 9), the engagement portion is retained in the through hole 621, thereby facilitating reliable assembly between the thermostat 6 and the air channel member 2.

In some embodiments, the relative position of the thermostat 6 and the heating device 3 can be ensured by using the mounting means shown in fig. 5 and 7. And when the temperature controller 6 is installed and fixed, the first-layer shell 21 and the heating device 3 are fixed by pre-assembling, such as by U-shaped reverse buckling, and then assembling and fixing by a mounting part 20 (such as a fastener 7 or a clamping piece).

When the temperature controller 6 is fixed by the fastening piece 7, the temperature controller 6 can be stably fixed at a specified position by only using one fastening piece 7. The requirement on the precision of parts in assembly by using two fasteners can be reduced, and the production and assembly cost is reduced.

According to the drying device 100 for the dish washer, provided by the embodiment of the invention, the temperature controller 6 is firstly positioned and then fixedly connected, and the drying device has the characteristics of simple assembly operation, low requirement on the precision of parts and good fixing effect. This way of pre-positioning and then fixedly connecting is beneficial to ensuring the sensing precision of the temperature controller 6 and improving the safety of the drying device 100.

Referring to fig. 1, a dishwasher 200 according to an embodiment of the second aspect of the present invention includes: a cabinet (not shown), a liner 210, and a drying device.

Specifically, the inner container 210 is disposed in the box, and the inner container 210 defines a washing chamber 2101 therein; the drying device is provided at the outer sidewall of the inner container 210, and the drying device is the drying device 100 for a dishwasher as described above. Thus, by providing the drying apparatus 100 for a dishwasher of the above-described first aspect embodiment on the dishwasher 200, the dishwasher 200 can be dried better, thereby being advantageous in improving the sanitary level of the dishwasher 200.

Other constructions and operations of the dishwasher 200 according to an embodiment of the present invention are known to those skilled in the art, and will not be described in detail herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. A drying apparatus for a dishwasher, comprising:

the heating air duct is provided with a heating air inlet and a heating air outlet, the heating air inlet is suitable for being communicated with the outside of a washing cavity of the dish washer, and the heating air outlet is suitable for being communicated with the washing cavity;

an air duct member, at least a portion of the heating air duct being defined by the air duct member, the air duct member being detachably disposed within the body;

the heating device is arranged in the air duct piece to heat air entering the air duct piece;

the temperature controller and the heating device are electrically connected with a controller of the dish washer, so that the heating device is controlled to be powered off through the controller when the temperature value sensed by the temperature controller is higher than a preset temperature value;

The temperature controller is arranged adjacent to the heating device;

the heating device comprises a heating body and a wiring terminal connected with the heating body, and the temperature controller is arranged on one side of the heating body, which is away from the wiring terminal;

the air duct piece comprises a first layer of shell and a second layer of shell arranged outside the first layer of shell, wherein the first layer of shell comprises two first sub-shells, and the two first sub-shells are buckled and installed to form the first layer of shell; the second layer of shell comprises two second sub-shells, and the two second sub-shells are buckled and mounted to form the second layer of shell;

the temperature controller comprises a body part and a mounting lug, and the temperature controller is assembled and mounted on the first sub-shell through the mounting lug.

2. The drying apparatus for a dishwasher according to claim 1, wherein the thermostat is directly opposite to the heating body in a width direction of the air duct member.

3. The drying apparatus for a dishwasher according to claim 1, wherein at least part of the air channel member is formed in a double-layered structure;

the heat dissipation grid is formed on at least one of the first layer of shell and the second layer of shell, the first layer of shell is a metal piece, and the second layer of shell is a flame-retardant plastic piece.

4. A drying apparatus for a dishwasher according to claim 3, wherein the air duct member comprises:

a mounting section within which the heating device fits;

one end of the inclined section is connected with the heating air outlet, and a channel which is inclined downwards in the airflow flowing direction in the heating air duct is arranged in the inclined section;

the two ends of the transition section are respectively connected between the mounting section and the inclined section, and the transition section is formed into an arc shape protruding outwards in the airflow flowing direction;

wherein at least the mounting section is formed with the heat radiation grille.

5. A drying apparatus for a dishwasher according to claim 3, wherein the duct member is provided with a relief notch for relieving the terminal, the relief notch comprising:

the first avoidance notch is formed on the first layer of shell;

the second avoidance notch is formed on the second layer of shell and corresponds to the first avoidance notch;

the wiring end is further sleeved with a supporting piece, and the wiring end is arranged at the avoidance notch through the supporting piece.

6. The drying device for a dish washer according to claim 1, wherein a plurality of limiting blocks are arranged in the body, and the air duct piece is clamped in limiting grooves defined by the limiting blocks.

7. The drying apparatus for a dishwasher according to any one of claims 1 to 6, wherein one end of the duct member is connected with a drying fan and the other end is connected with the heating air outlet, and the heating apparatus is located downstream of the drying fan in the air flow direction of the heating duct.

8. A dishwasher, comprising:

a case;

the inner container is arranged in the box body and defines the washing cavity;

drying means provided at the outer side wall of the inner container, the drying means being a drying means for a dishwasher according to any one of claims 1-7.