CN108004735B

CN108004735B - Clothes dryer

Info

Publication number: CN108004735B
Application number: CN201610929741.7A
Authority: CN
Inventors: 游栖霞; 匡慧; 高踔; 李茂银
Original assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2016-10-31
Filing date: 2016-10-31
Publication date: 2021-05-04
Anticipated expiration: 2036-10-31
Also published as: EP3315657B1; EP3315657A1; CN108004735A

Abstract

A clothes dryer comprises a drying chamber, an air heating channel in fluid communication with the drying chamber, a heating device disposed in the air heating channel, a liquid circulating device disposed adjacent to or around the heating device, and an input channel and an output channel connected to the liquid circulating device. After entering the liquid circulation device from the input channel, the liquid flows out from the output channel after being heated by the heating device, and heated liquid is obtained; when the liquid flow is small, high-temperature steam after the liquid is vaporized can be obtained.

Description

Clothes dryer

[ technical field ] A method for producing a semiconductor device

The clothes dryer comprises a drying chamber, an air heating channel communicated with the drying chamber in a fluid mode, and a heating device is arranged in the air heating channel.

[ background of the invention ]

Dryers typically comprise a drying chamber. The air heating path is in fluid communication with the drying chamber. The air heating passage is provided with a heating device to provide heated air to the drying chamber.

[ summary of the invention ]

One object of the present invention is to adapt a clothes dryer to heat local liquid or convert water into high temperature steam.

In view of the above, the present invention provides a clothes dryer comprising a drying chamber, an air heating passage in fluid communication with the drying chamber, a heating device disposed in the air heating passage, a liquid circulating device disposed adjacent to or around the heating device, and an input passage and an output passage connected to the liquid circulating device.

The clothes dryer can be a pure clothes dryer or a clothes washing and drying machine combining the functions of washing and drying.

After entering the liquid circulation device from the input channel, the liquid flows out from the output channel after being heated by the heating device, and heated liquid is obtained; when the liquid flow is small, high-temperature steam after the liquid is vaporized can be obtained. The hot liquid or high-temperature steam can be designed to be delivered to a proper position, so that the effects of cleaning, sterilizing, removing wrinkles of clothes and the like are achieved. And the existing clothes dryer is little modified.

Preferably, the liquid flow-through means is a curved tube which is shaped close to the heating means and extends at least partially concomitantly. The whole liquid circulation device designed in this way is closer to the heating device, so that heat transfer is facilitated.

Preferably, the liquid circulating device is a disc-shaped structure with an open upper side, and the heating device is positioned in the disc-shaped structure or positioned above or below the disc-shaped structure.

Preferably, the liquid circulation device is a closed-top water tank, and the heating device is located in the water tank, or above or below the disc-shaped structure.

Preferably, a fan for causing air to be blown toward the drying chamber is connected to the air heating duct, and an outlet of the output duct is located in the air heating duct. The liquid flowing out from the output channel directly falls on the bottom of the air heating channel to form a high-temperature water film, and the air under the action of the fan drives the heat of the heating device to diffuse, so that the high-temperature water film is quickly evaporated into steam and blown into the drying chamber.

Preferably, the inner surface of the bottom of the air heating channel is covered with a hydrophilic coating. The hydrophilic coating helps the high temperature liquid to form a surface and a larger, thinner film of water on the interior surface of the drying tunnel.

Preferably, the outlet channel terminates with a nozzle for converting the liquid into a water mist.

The invention will be further described below by taking a washing and drying machine as an example and combining the drawings.

[ description of the drawings ]

FIG. 1 is a partial schematic view of a washer-dryer of a first embodiment;

FIG. 2 is a partial schematic view of a washer-dryer of a second embodiment;

FIG. 3 is a partial schematic view of a third embodiment of a washer-dryer;

FIG. 4 is a partial schematic view of a fourth embodiment of a washer-dryer;

FIG. 5 is a partial schematic view of a fifth embodiment of a washer-dryer;

fig. 6 is a connection diagram of a control system of the washing and drying machine.

[ detailed description ] embodiments

As shown in fig. 1, the washer-dryer has a treatment chamber 2 for receiving laundry, and an air heating channel 3 in fluid communication with the treatment chamber. A fan 4 is provided upstream of the air heating tunnel 3 to force air from the air heating tunnel 3 into the treatment chamber 2. A heating device 5 is provided in the air heating passage 3 to heat air flowing therethrough. A liquid circulation means 6 is provided adjacent to the heating means 5. The liquid flow-through device 6 connects the inlet channel 7 and the outlet channel 8. After entering the liquid flow-through device 6 from the inlet channel 7, the liquid, which is mainly water or washing water mixed with detergent, is heated by the proximity of the heating device 5 and then discharged from the outlet channel 8 into the treatment chamber 2.

The liquid flow-through device 6 is configured in a shape in which liquid can flow.

For example, in the embodiment shown in fig. 1, the liquid circulation device 6 is a disc-shaped structure 61 with an open upper side, and the heating device 5 is located in the disc-shaped structure 61. In other alternative embodiments, the heating device 5 may also be located above or below the disk-like structure 61. In other alternative embodiments, the liquid circulation device 6 is a closed-top water tank 62, and the heating device 5 is located in the water tank 62, or above or below the water tank 62.

The disc-shaped structure 61 can be distinguished from the water reservoir 62 only by whether it is open at the top or closed, so that it can be relatively close in top projection, so that the liquid flow means 6 in the form of the disc-shaped structure 61 and the water reservoir 62 are represented by the same means in fig. 1. The contents of the above embodiments can be clearly judged by those skilled in the art in conjunction with the description and the accompanying drawings.

In the embodiment shown in fig. 2, the liquid flow means 63 is a curved pipe 63 which extends in a shape close to the heating means 5. The liquid circulating means 63 is located immediately adjacent the heating means 5 and closer to the heat source, and thus absorbs more heat, so that the liquid therein is heated rapidly.

In the embodiment shown in fig. 3, the outlet of the outlet channel 8 is located in the air heating channel 3. The liquid flowing out of the outlet channel 8 then falls directly to the bottom of the air heating channel 3. The inner surface of the bottom of the air heating channel 3 is covered with the hydrophilic coating 20, so that the liquid of high temperature spreads on the inner surface of the bottom of the air heating channel 3 to form a water film. Further heating of the water film by the heating means 5 may produce evaporation, generating steam into the treatment chamber 2. When the fan 4 is started, the hot air rapidly evaporates the liquid on the surface of the water film, forming a large amount of steam.

If a high temperature mist is generated for cleaning, sterilization, etc., in some embodiments a nozzle 21 for converting the liquid into a mist may be provided at the end of the outlet channel 8. The nozzle 21 may be provided on the output channel 8 of the above various embodiments.

The input channel 7 can also input less liquid in unit time, and the heating device 5 can generate higher temperature, so that the liquid can be evaporated to generate steam under the action of high temperature. The input channel 7 is provided with a water valve 9 controlled by a control device 10, as shown in fig. 5, or with a circulation pump 11, as shown in fig. 4. The input of the circulation pump 11 is connected to the process chamber 2 so as to pump the liquid in the process chamber 2 into the liquid flow-through device 6.

The processing chamber 2 described above can be used as both a drying chamber and a washing chamber.

The high-temperature liquid or high-temperature vapor-liquid mixture output from the output channel 8 can be conveyed to a proper position according to design requirements.

As shown in fig. 4, the outlet channel 8 is connected to a dock seal 12. The outlet 81 of the outlet channel 8 is near the bottom of the door seal 12 where wash liquid and foam tend to accumulate, thereby forming a biofilm. The high-temperature liquid or the high-temperature vapor-liquid mixture output by the output channel 8 can flush the part, thereby avoiding the generation of a bacterial film and keeping the part clean. The high temperature liquid then flows into the treatment chamber 2, which may participate in the washing of the laundry.

The outlet channel 8 can also be directly connected to the treatment chamber 2, in particular to the rear part of the treatment chamber 2 where dirt is liable to accumulate, so that not only is this part kept clean, but the high-temperature liquid can then also participate in the washing of the laundry.

Furthermore, as shown in fig. 5, in other embodiments, the output channel 8 may also be connected with the cartridge 13 and/or the condensation channel 14, so as to achieve the effects of cleaning, sterilization, mildew prevention, and the like.

Here, the output channel 8 may be connected to a single component in each of the above embodiments, or may include a plurality of pipes so as to be connected to a plurality of components.

As shown in fig. 6, the control device 10 is connected to the fan 4, the heating device 5, and the water valve 9 or the circulation pump 11. In order to regulate the temperature of the liquid or vapor mixture output by the output channel 8, the power or switching rhythm of the heating device 5 can be regulated by the control device 10; adjusting the rotation speed of the fan 4; and/or by controlling the switching rhythm of the water valve 9 or the circulation pump 11. Adjusting the speed of the fan 4 adjusts the ratio of heat transfer from the heating means 5 to the liquid and air. Reducing the speed of the fan 4 reduces the air flow and reduces the heat transferred to the air, thus increasing the temperature of the liquid or vapor mixture exiting the outlet channel 8. Especially when the fan 4 is switched off, the air in the air heating channel 3 is naturally convected. After the air has reached a certain temperature, most of the heat of the heating means 5 is used for heating the liquid in the liquid circulating means 6.

The control device 10 also controls the washing program. The washing program comprises a main washing stage, a rinsing stage and a spin-drying stage. Before the main wash phase of the washing program, the heating means 5 and the water valve 9 are activated. The water is heated by the heating device 5 after entering the liquid flow-through device 6 from the inlet channel 7 and is then delivered into the treatment chamber 2 from the outlet channel 8. The output into the process chamber 2 may be water or a vapor-liquid mixture at a high temperature. Preferably, the control means 10 simultaneously activate the fan 4 so that the outlet channel 8 outputs heated water or a vapour-liquid mixture to the treatment chamber 2 while the air heating channel 3 outputs heated air to the treatment chamber 2. The high temperature air, water or vapor-liquid mixture, etc. introduced into the processing chamber 2 contact with the laundry to heat and sterilize the laundry. Because the laundry is now in a drier condition, the higher temperature can be reached quickly, thereby killing bacteria in the laundry. Meanwhile, the clothes are heated in a dry state, so that damage of fading, shrinkage and the like of the clothes is reduced. The clothes are more sanitary after the sterilization is finished and the subsequent main washing stage is carried out. And at this time, the laundry is already in a high temperature state, improving the activity of the detergent in the subsequent main washing stage. In addition, the high temperature water or vapor-liquid mixture entering the process chamber 2 from the outlet channel 8 is also used in the subsequent main wash stage.

In addition, the heating device 5 and the water pump 9 may also be switched on during the main wash phase and/or the rinse phase. For example, during the initial part of the main wash phase. When the feed channel 7 is connected to the circulation pump 11, the heating device 5 and the circulation pump 11 are switched on during the main wash phase and/or the rinse phase, so that the washing liquid in the treatment chamber 2 is heated in a circulating manner and the cartridge 13, the door seal 12 and the condensation channel 14 can be cleaned and sterilized before entering the treatment chamber 2.

Claims

1. A clothes dryer comprising a drying chamber (2), an air heating channel (3) in fluid communication with the drying chamber, in which air heating channel heating means (5) are provided, characterized in that: a liquid circulating device (6, 61, 62, 63) is arranged close to or around the heating device, an input channel (7) and an output channel (8) are connected with the liquid circulating device (6, 61, 62, 63), wherein the liquid circulating device is a disc-shaped structure (61) with an open upper part, the heating device is positioned in the disc-shaped structure, or the liquid circulating device is a water tank (62) with a closed top part, the heating device is positioned in the water tank, a fan (4) for promoting air to blow towards the drying chamber is connected with the air heating channel, and an outlet of the output channel is positioned in the air heating channel.

2. The clothes dryer of claim 1, wherein: the inner surface of the bottom of the air heating channel is covered with a hydrophilic coating (20).

3. The clothes dryer of claim 1, wherein: the end of the output channel is provided with a nozzle (21) for converting the liquid into a water mist.