CN107761336B

CN107761336B - Clothes drying machine

Info

Publication number: CN107761336B
Application number: CN201610696466.9A
Authority: CN
Inventors: 游栖霞; 张琦; 李茂银; 徐永刚; U·戴伊
Original assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Current assignee: Bo Xihua Electric Jiangsu Co Ltd; BSH Hausgeraete GmbH
Priority date: 2016-08-19
Filing date: 2016-08-19
Publication date: 2021-02-09
Anticipated expiration: 2036-08-19
Also published as: EP3284857A1; CN107761336A

Abstract

A clothes dryer comprises a box body, a drying chamber, an air heating channel associated with the drying chamber and a fan for promoting air to flow in the drying chamber and the air heating channel, wherein the fan is arranged adjacent to the air heating channel, the fan is provided with a main air channel formed by a shell, the main air channel is communicated with the drying chamber and the air heating channel in a fluid mode, a cover body is coated outside the shell, a secondary air channel with an inlet and an outlet is formed between the cover body and the shell, blades rotating along with a motor rotor are arranged in the secondary air channel, and the blades are arranged so that when rotating along with the rotor, the blades drive air to enter the secondary air channel from the inlet of the secondary air channel and flow out from the outlet of the secondary air channel. When the fan operates, the rotor drives the blades in the secondary air channel to rotate, so that air passes through the secondary air channel to take away heat generated by the fan motor, and cooling is realized.

Description

Clothes drying machine

[ technical field ] A method for producing a semiconductor device

The present invention relates to a laundry dryer comprising a cabinet, a drying chamber, an air heating channel associated with the drying chamber, and a fan for causing air to flow in the drying chamber and in the air heating channel, the fan being disposed adjacent to the air heating channel, wherein the fan has a main air channel constituted by a casing.

[ background of the invention ]

Many clothes dryers generally have a drying chamber, an air heating tunnel associated with the drying chamber, and a fan to cause air to flow within and around the drying chamber and the air heating tunnel. The motor of the fan generates a large amount of heat after the fan runs for a long time, and the performance and the service life of the fan are affected if the heat is not dissipated in time. In order to cool the fan, blades rotating with the rotor may be provided outside the fan motor, and the blades drive the air to flow when rotating, thereby cooling the fan motor.

However, since the fan is usually disposed adjacent to the air heating passage, the flow of air outside the fan causes a large loss of heat from the air heating passage, resulting in heat loss.

[ summary of the invention ]

An object of the present invention is to dissipate heat of a fan motor while preventing heat loss of an air heating passage.

In view of the above, the present invention provides an improved clothes dryer comprising a cabinet, a drying chamber, an air heating passage associated with the drying chamber, and a fan for causing air to flow in the drying chamber and in the air heating passage, the fan being disposed adjacent to the air heating passage, wherein the fan has a primary air passage formed by a housing, the primary air passage being in fluid communication with the drying chamber and the air heating passage, the housing being externally covered with a cover, the cover and the housing forming a secondary air passage therebetween having an inlet and an outlet, the secondary air passage being provided with vanes rotating with a rotor of a motor, the vanes being disposed so as to cause air to be drawn from the inlet of the secondary air passage into the secondary air passage and to flow out from the outlet of the secondary air passage as the rotor rotates, the inlet and the outlet of the secondary air passage extending through a first duct and a second duct, respectively.

When the fan operates, the rotor drives the blades in the secondary air channel to rotate, so that air passes through the secondary air channel to take away heat generated by the fan motor, and cooling is realized. Meanwhile, the auxiliary air channel is at least partially isolated from the surrounding space of the air heating channel through the cover body, the first pipeline and the second pipeline, and the rotation of the blades can not disturb the air around the air heating channel, so that the heat loss of the air heating channel caused by the rotation of the blades is avoided. In addition, because the inlet and the outlet of the secondary air channel respectively extend through the first pipeline and the second pipeline, the lengths and the extending directions of the first pipeline and the second pipeline can be properly set, so that the air entering and leaving the secondary air channel is far away from the surrounding space of the air heating channel, and the influence on the air heating channel is further reduced.

Preferably, the inlet and outlet of the secondary air channel are isolated from the ambient space in which the air heating channel is located. This arrangement minimizes disturbance of the air flow of the secondary air passageway to the air surrounding the air heating passageway, thereby minimizing the heat loss caused thereby.

Preferably, the outlet of the second duct, which is connected to the outlet of the secondary air channel, is close to the device requiring temperature reduction. The air leaving the secondary air passage from the second duct can then carry away at least part of the heat of the device requiring temperature reduction.

Preferably, the inlet of the secondary air passage introduces ambient air from outside the tank through the first duct. Thus, not only is unnecessary disturbance generated to the air in the box body, but also the temperature of the ambient air is often lower than that of the air in the box body.

The device needing temperature reduction comprises at least one of a circuit system, the outer wall of the drying chamber and a detergent adding device.

Wherein the detergent adding device comprises a receiving chamber adapted to store detergent for a plurality of washing programs, an outlet of the second pipe facing the receiving chamber. The air from the sub-air passage takes away heat of the receiving chamber to lower the temperature of the receiving chamber, thereby preventing deterioration or reduction of chemical properties of the detergent due to high temperature.

Preferably, the motor rotor of the fan is at least partially located in the secondary air passage between the casing and the cover, and the blades are provided in a circumferential direction of a portion of the motor rotor located in the secondary air passage. The device has the advantages of small occupied space, simple structure and low manufacturing cost.

The invention will be further described with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic view of a configuration of a dryer;

fig. 2 is a perspective view of the fan with the casing and the cover separated.

[ detailed description ] embodiments

As shown in fig. 1, the laundry dryer 100 has a cabinet 1. A drying chamber 2 is arranged in the box body 1. The drying chamber 2 includes a rotatable inner tub 3 and an outer tub 4 located outside the inner tub 3. The inner barrel 3 is communicated with the outer barrel 4. The laundry is dried in the inner tub 3. The outer barrel 4 is connected with a condensation channel 5, a fan 6 and an air heating channel 7 in sequence. The outlet of the air heating passage 7 is in spatial communication with the outer tub 4 again. The fan 6 is started to promote the air to circularly flow along the directions of the fan 6, the air heating channel 7, the drying chamber 2, the condensing channel 5 and the fan 6 in sequence.

In the embodiment shown in fig. 1, the laundry dryer 100 further comprises a detergent adding device 8. Wherein the detergent adding device 8 comprises a receiving chamber 9 adapted to store detergent for a plurality of washing programs. The detergent adding device 8 and the air heating duct 7 are disposed adjacently, so that the heat emitted from the air heating duct 7 will cause the detergent adding device 8 to rise in temperature.

As can be seen in fig. 1 in combination with fig. 2, the fan 6 has a main air passage 11 formed by a housing 10. The main air passage 11 is in fluid communication with the drying chamber 2 and the air heating passage 7. The housing 10 is externally covered with a cover 12. A secondary air passage 15 having an inlet 13 and an outlet 14 is formed between the cover 12 and the housing 10. The inlet 13 and the outlet 14 of the secondary air channel 15 extend through a first duct 16 and a second duct 17, respectively. The motor rotor 61 of the fan 6 is at least partially located in the secondary air channel 15 between the housing 10 and the cover 12. The blades are provided with blades 62 in the circumferential direction of a portion of the motor rotor 61 located in the secondary air passage 15. The vanes 62, when rotated with the rotor 61, entrain gas from the inlet 13 of the secondary air channel 15 into the secondary air channel 15 and out the outlet 14 of the secondary air channel 15.

The inlet 13 of the sub-air passage 15 is connected to the outside of the case 1 through a first duct 16, so that ambient air having a relatively low temperature is introduced from the outside of the case 1.

The second duct 17 connected to the outlet 14 of the secondary air passage 15 terminates in a frame 19 disposed around the detergent accommodating chamber 9. The outlet 18 of the second duct 17 is opposite the housing chamber 9. The ambient air with a lower temperature enters the secondary air channel 15, then takes away part of the heat of the fan 6, and continues to flow and blow towards the detergent containing chamber 9, thereby cooling the detergent containing chamber 9. The outlet 14 of the secondary air channel 15 is isolated from the surrounding space where the air heating channel 7 is located by a frame 19.

In other embodiments not shown in fig. 1, the outlet 18 of the second duct 17 may be close to other devices requiring temperature reduction, such as the circuit system or the outer wall of the drying chamber 2. However, when cooling the circuit system or the drying chamber 2, the outlet 18 of the second duct 17 is preferably remote from the space around which the air heating channel 7 is located, and is preferably isolated from this space.

Claims

1. A clothes dryer comprises a box body, a drying chamber, an air heating channel associated with the drying chamber and a fan for promoting air to flow in the drying chamber and the air heating channel, wherein the fan is arranged adjacent to the air heating channel, the fan is provided with a main air channel formed by a shell, the main air channel is communicated with the drying chamber and the air heating channel in a fluid mode, the clothes dryer is characterized in that a cover body is coated outside the shell, a secondary air channel with an inlet and an outlet is formed between the cover body and the shell, blades rotating along with a motor rotor are arranged in the secondary air channel, the blades are arranged so that the blades can drive air to enter the secondary air channel from the inlet of the secondary air channel and flow out from the outlet of the secondary air channel when rotating along with the rotor, and the inlet and the outlet of the secondary air channel respectively extend through a first pipeline and a second pipeline.

2. The clothes dryer of claim 1, wherein: the inlet and outlet of the secondary air channel are isolated from the surrounding space in which the air heating channel is located.

3. The clothes dryer of claim 1, wherein: the outlet of the second pipeline connected with the outlet of the secondary air channel is close to the device needing temperature reduction.

4. The clothes dryer of claim 3, wherein: the inlet of the secondary air passage introduces ambient air from outside the case through the first duct.

5. The clothes dryer of claim 3, wherein: the device needing temperature reduction comprises at least one of a circuit system, the outer wall of the drying chamber and a detergent adding device.

6. The clothes dryer of claim 5, wherein: the detergent adding device comprises a housing chamber adapted to store detergent for a plurality of washing programs, the outlet of the second duct facing the housing chamber.

7. The clothes dryer of claim 1, wherein: the motor rotor of the fan is at least partially positioned in the secondary air channel between the shell and the cover body, and the blades are arranged in the circumferential direction of the part of the motor rotor positioned in the secondary air channel.