CN106192325B - Electric clothes dryer - Google Patents

Abstract

The invention discloses an electric clothes dryer, comprising a tub for accommodating clothes, a condenser communicated with the tub space, and a fan for promoting air to flow from the tub to the condenser. The condenser and the tub have a common wall, and the condenser has an annular shape. airflow channel. Since the condenser is integrated with the barrel, the space is more compact, and the annular airflow channel provides a longer heat exchange stroke and improves the condensation efficiency. The rotating airflow causes the condensed water to be thrown against the wall of the annular airflow channel under the action of centrifugal force, so that it is not easily carried into the fan and air heating device by the airflow.

Description

electric clothes dryer

【Technical field】

The present invention relates to an electric clothes dryer, in particular to a condensation device of the clothes dryer.

【Background technique】

Electric clothes dryers usually include machines with pure clothes dryer functions and machines that combine washing and drying functions. The drying principle of the clothes dryer can be roughly summarized as follows: under the action of the heating device, the dry air is heated by the heating device to form dry hot air, and then enters the clothes processing barrel to exchange heat with the wet clothes, and the clothes are heated. The moisture is taken away to form relatively humid hot air, and the humid hot air is then condensed by the condensing device, the moisture in it is condensed into water, and then discharged through the drain pipe, and the condensed air becomes relatively dry cold air , under the action of the fan, it is redirected to the heating device, and the hot air formed by heating enters the next cycle, and so on, until the drying process ends.

There are many condensing methods used by the condensing device, one of which is more common is to use water as a cooling medium to exchange heat with drying air, so that the moisture in the hot air is condensed and separated from the air. Such condensing devices usually have a channel-shaped body to which cooling water pipes are connected. The moist and hot drying air passes from the bottom to the top of the condensing device body, and the cooling water flows out from the top to the bottom during the heat exchange with the moist and hot air. Usually due to space constraints, the height of the condensing device body is limited, and the heat exchange travel between the humid air and the cooling water is very short. In addition, the hot and humid air moving up at a high speed will blow up the water flow after encountering the cooling water, and even often blow water droplets into the fan and air heating device. In addition, since the condenser needs to occupy a certain space, in the limited space, the space of the laundry treatment tub must be compressed.

[Content of the invention]

An object of the present invention is to provide an electric clothes dryer with a compact structure, while the heat exchange effect of the condenser is better, and the cooling water is not easily blown into the fan and the air heating device.

In view of the above purpose, the technical solution adopted in the present invention is: an electric clothes dryer, comprising a tub for accommodating clothes, a condenser communicated with the tub space, and a fan for promoting air to flow from the tub to the condenser, the condenser and the tub There are common walls and the condenser has an annular gas flow channel.

The electric clothes dryer may refer to various machines with a clothes drying function, for example, it may be a machine purely drying clothes, or it may be a washing and drying machine.

Compared with the prior art, since the condenser is integrated with the barrel, the space is more compact, and the annular air flow channel provides a longer heat exchange stroke and improves the condensation efficiency. The rotating airflow causes the condensed water to be thrown against the wall of the annular airflow channel under the action of centrifugal force, so that it is not easily carried into the fan and air heating device by the airflow.

As one of the preferred improvement solutions, the tub includes a substantially cylindrical peripheral wall, and the tub is arranged approximately horizontally or inclined along its axis, and the common wall of the condenser and the tub is located on the peripheral wall of the tub and above the tub axis. Since the peripheral wall of the tub is cylindrical, there is a usable space between the peripheral wall and the box. The improved solution utilizes this space, thereby maximizing the space between the barrel and the condenser within the limited box space.

As a possible improvement solution of the present invention, the annular airflow channel is located in the space that is formed by the outer wall of the condenser and the arc-shaped peripheral wall of the barrel and is gradually increased in the vertical direction due to the downward bending of the peripheral wall of the barrel. This space is usually vacant in the dryer, or is rarely fully occupied by other components, so this arrangement is also a more clever use of space. At the same time, the sinking space provides a relatively sufficient vertical space for the annular airflow channel, so that the airflow can sink fully in the annular airflow channel and have a longer heat exchange stroke.

As a further improvement of the present invention, the condenser includes an air inlet channel, the air inlet channel communicates with the annular air flow channel and is located upstream of the annular air flow channel, and the condenser includes a cooling water inlet, which is located in the air inlet channel. Therefore, the cooling water is blown away by the airflow in the intake passage and mixed with the airflow, so that the heat exchange process in the annular airflow passage can be more fully utilized.

As a further improvement of the present invention, the air inlet of the air inlet channel is arranged on the peripheral wall of the barrel, and the air inlet of the air inlet channel and the cooling water inlet are respectively located on two sides of the barrel ridge corresponding to the vertical above the axis of the barrel. side. In this way, it is not easy for the cooling water to enter the tub from the air inlet to wet the clothes in it.

As a further improvement of the present invention, the condenser includes an air inlet channel, the air inlet channel communicates with the annular air flow channel and is located upstream of the annular air flow channel, and the flow cross section of the air inlet channel gradually decreases along the gas flow direction. Such an air inlet channel can increase the speed of air flow into the annular air flow channel and enhance the heat exchange effect.

As a further improvement of the present invention, the condenser includes a cooling water inlet, and the cooling water inlet is close to the narrowest part of the flow cross section of the air inlet passage. The cooling water inlet is located near the area where the airflow velocity is the largest, which is beneficial for the cooling water to be blown into small droplets and better mixed with the airflow. At the same time, the centrifugal force generated by the larger airflow speed in the annular airflow channel is also larger, so that the condensed water is separated from the gas and attached to the channel wall to avoid entering the fan.

As a further improvement of the present invention, the intake passage extends substantially horizontally.

As a further improvement of the present invention, a straight airflow channel is arranged in the middle of the annular airflow channel, the wall of the straight airflow channel constitutes the inner wall of the annular airflow channel, and the inlet of the straight airflow channel is located at the bottom of the annular airflow channel. The outlet is at its top and communicates with the fan. The airflow rotates along the annular airflow channel and then descends to the bottom to enter the straight airflow channel. Such a circuitous airflow path further reduces or even prevents condensed water from entering the fan, and also makes condensation more sufficient.

As a further improvement of the present invention, the wall of the straight air flow channel has a cylindrical structure, so that the air flow can rotate more smoothly in the annular air flow channel.

As a further improvement of the present invention, the inlet of the annular airflow channel is close to the top of the annular airflow channel. The airflow enters the annular airflow channel from a higher position and finally enters the straight airflow channel from the bottom. The airflow rotates and descends, increasing the formation of heat exchange and improving the condensation effect.

As a further improvement of the present invention, the inlet of the annular airflow channel is arranged in the tangential direction of the annular airflow channel. The high-speed airflow entering from the tangential direction is conducive to forming a rotating airflow in the annular airflow channel and reducing resistance.

As a further improvement of the present invention, a condensed water drainage port is provided on the barrel wall at the bottom of the annular airflow channel. This setting prevents water accumulation. Condensed water is drained from the bucket through the drain.

As a further improvement of the present invention, the annular airflow channel includes a cylindrical outer wall and a cylindrical inner wall. The annular channel between the outer cylindrical wall and the inner cylindrical wall provides little resistance to airflow therethrough.

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

【Description of drawings】

Fig. 1 is a schematic diagram of a clothes dryer barrel and a condenser;

Figure 2 is a schematic cross-sectional view of the dryer barrel, the condenser and the fan;

FIG. 3 is a cross-sectional view taken along the direction A-A in FIG. 2 .

【Detailed ways】

As shown in FIGS. 1 to 3 , the clothes dryer has an inner tub 1 and an outer tub 2 that are coaxial and spatially communicated. The inner tub 1 is rotatably installed in the outer tub 2 . The clothes to be dried are installed in the inner tub 1 and are gradually dried under the action of the hot air entering the outer tub 2 .

The inner tub 1 and the outer tub 2 are installed substantially horizontally along the axial direction thereof. A condenser 3 is provided on the peripheral wall 21 at the top of the outer tub 2 . Downstream of the condenser 3, a fan 4 and an air heating channel 5 are connected in sequence. The outlet of the air heating passage 5 communicates with the front opening 22 of the outer tub 2 . Therefore, an air circulation passage is formed in the outer tub 2 , the condenser 3 , the fan 4 and the air heating passage 5 .

The condenser 3 includes an outer wall 31 . The outer wall 31 and the substantially cylindrical peripheral wall 21 of the outer tub 2 together form a condensation channel 32 . The condensation passage 32 includes an intake passage 34 and an annular airflow passage 35 downstream of the intake passage 34 . The intake passage 34 communicates with the annular airflow passage 35 .

The annular air flow channel 35 is located in the space that is formed by the condenser outer wall 31 and the arc-shaped outer barrel peripheral wall 21 and is gradually increased in the vertical direction due to the downward bending of the outer barrel peripheral wall 21. .

As shown in FIGS. 1 and 2 , the intake passage 34 extends substantially horizontally, and its flow cross section gradually decreases along the gas flow direction. The cooling water inlet 36 is located in the intake passage 34 , near the narrowest part of the flow cross section of the intake passage 34 . The air inlet 33 of the air inlet passage 34 is arranged on the peripheral wall 21 of the outer tub, and the air inlet 33 and the cooling water inlet 36 of the air inlet passage are respectively located on the ridge of the outer tub corresponding to the vertical above the shaft 22 of the outer tub 2 both sides of the portion 23 .

The annular channel 35 includes a cylindrical outer wall 351 and a cylindrical inner wall 352 . The outer wall 351 is a part of the condenser shell 31 . The interior of the inner wall 352 forms the straight air passage 37 . The inlet 371 of the straight airflow channel 37 is located at the bottom thereof and communicates with the annular airflow channel 35 ; the outlet 372 of the straight airflow channel 37 is located at the top thereof and communicated with the fan 4 .

The inlet 353 of the annular airflow channel 35 is close to the top thereof, and is disposed toward the tangential direction of the annular airflow channel 35 . The inlet 353 of the annular airflow channel 35 is connected to the intake channel 34 .

A condensate water drain port 38 is provided on the outer tub peripheral wall 21 at the bottom of the annular airflow channel 35 , and then the condensate water is discharged into the outer tub 2 from the condensate water drain port 38 .

The various specific embodiments described above and shown in the accompanying drawings are only used to illustrate the present invention, but not all of the present invention. Within the scope of the basic technical idea of the present invention, any form of modification made by those of ordinary skill in the relevant technical field to the present invention is within the protection scope of the present invention.

Claims (12)

1. An electric clothes dryer comprising a tub (2) for containing clothes, a condenser (3) in communication with a space of the tub, and a fan (4) for promoting air flow from the tub to the condenser, characterized in that: condenser (3) and bucket (2) have common wall (21), and condenser (3) have annular airflow channel (35), condenser (3) contain inlet channel (34), and inlet channel (34) communicate with each other with annular airflow channel (35), and are located annular airflow channel (35) upstream, and the circulation cross-section of inlet channel (34) diminishes along gas flow direction gradually, condenser (3) contain cooling water inlet (36), cooling water inlet (36) are close to the narrowest department of the circulation cross-section of inlet channel (34).

2. The electric clothes dryer of claim 1, wherein: the tub (2) comprises a substantially cylindrical peripheral wall (21), and the tub (2) is arranged substantially horizontally or obliquely along its axis (22), the common wall (21) of the condenser (3) and the tub (2) being located on the tub peripheral wall (21) and above the tub axis (22).

3. The electric clothes dryer of claim 2, wherein: the annular air flow channel (35) is positioned in a space which is formed by the condenser outer wall (31) and the arc-shaped barrel peripheral wall (21) and is formed above the barrel shaft (22) in an inclined mode, and the space is gradually enlarged in the vertical direction due to the downward bending of the barrel peripheral wall (21).

4. The electric clothes dryer of claim 1, wherein: the condenser (3) comprises an air inlet channel (34), the air inlet channel (34) is communicated with the annular airflow channel (35) and is positioned at the upstream of the annular airflow channel, the condenser comprises a cooling water inlet (36), and the cooling water inlet (36) is positioned in the air inlet channel (34).

5. The electric clothes dryer of claim 4, wherein: the air inlet (33) of the air inlet channel (34) is arranged on the peripheral wall (21) of the barrel, and the air inlet (33) and the cooling water inlet (36) of the air inlet channel are respectively positioned at two sides of the barrel ridge part (23) which is vertically above the shaft (22) of the barrel (2) and corresponds to the upper part.

6. The electric dryer of any one of claims 4-5, characterized in that: the intake passage (34) extends substantially horizontally.

7. The electric clothes dryer of claim 1, wherein: the middle of the annular airflow channel (35) is provided with a straight airflow channel (37), the wall (352) of the straight airflow channel forms the inner wall (352) of the annular airflow channel, the inlet (371) of the straight airflow channel is positioned at the bottom of the straight airflow channel and communicated with the annular airflow channel (35), and the outlet (372) of the straight airflow channel is positioned at the top of the straight airflow channel and communicated with the fan (4).

8. The electric clothes dryer of claim 7, wherein: the wall (352) of the straight air flow channel (37) is of a cylindrical structure.

9. The electric clothes dryer of claim 7, wherein: the inlet (353) of the annular gas flow channel (35) is close to the top of the annular gas flow channel (35).

10. The electric clothes dryer of claim 9, wherein: the inlet (353) of the annular airflow channel (35) is arranged in the tangential direction of the annular airflow channel (35).

11. The electric clothes dryer of claim 1, wherein: a condensed water outlet (38) is arranged on the barrel wall (21) at the bottom of the annular airflow channel (35).

12. The electric clothes dryer of claim 1, wherein: the annular gas flow passage (35) includes a cylindrical outer wall (351) and a cylindrical inner wall (352).

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