JP2834121B2 - Clothes dryer - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a clothes dryer, and more specifically, a heating and circulating air is introduced from a rotating drum side at the rear of a heat exchange fan to circulate the clothes. The present invention relates to improvement of a casing fed into a duct. [Description of the Related Art] A clothes dryer generally includes a dryer body having a clothes input port, a rotating drum that is attached to the inside of the dryer body and stores clothes, and is located at a rear portion of the rotating drum. And a heat exchange fan having a heat exchange function inside and outside the dryer main body, and a casing accommodating the heat exchange fan. The prior art relating to the clothes dryer is described in, for example,
No. 61-12718. [Problems to be Solved by the Invention] Clothes dryers using heat exchange fans are advantageous in terms of miniaturization and cost reduction of products. However, it is difficult to say that sufficient consideration has been given to smoothly sending the air flow sucked into the casing from the rotating drum side to the circulation duct side, and there is much air blowing loss, and efficient air blowing and heat exchange can be obtained. There was a disadvantage that it could not be done. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to smoothly feed an air flow sucked into a casing from a rotary drum side to a circulation duct side. In addition, the blower loss is small, and the blowing efficiency of the heating circulating air can be improved, and thus the heat exchange efficiency can be improved. At the same time, the rotation speed of the heat exchange fan is reduced by the blower efficiency up, and the noise generated from the fan is reduced. It is an object of the present invention to provide an improved clothes dryer capable of reducing the amount. [Means for Solving the Problems] The object is to provide a dryer body having a clothes input port, a rotating drum mounted in the dryer body and containing clothes, and a dryer positioned at the rear of the rotating tram. A heat exchange fan having a function of blowing heated air in the body, and a heat exchange function inside and outside the dryer main body; and a casing accommodating the heat exchange fan, and air generated by rotation of the heat exchange fan. After the flow was guided from the intake port provided in the central part of the casing to the air flow passage side of the rear part of the casing, it was sent into the circulation duct through the exhaust port provided on the outer peripheral wall of the casing, and was sent into the circulation duct. In a clothes dryer in which the air flow is heated by a heater and introduced into the rotating drum again, and the above cycle is repeated, a case is located at the back of the casing, On the downstream side of the exhaust port provided on the outer peripheral wall of the casing, a fluid damping member for retaining the airflow flowing along the casing top plate surface is provided. This is achieved by projecting over the [Operation] According to the present invention having the above-described structure, the casing top surface is located at the back of the casing containing the heat exchange fan and downstream of the exhaust port provided on the outer peripheral wall of the casing. A fluid damping member for damping the airflow flowing along the casing extends from the intake port side in the center of the casing to the outer peripheral wall of the casing on the downstream side of the exhaust port, as will be described later. The airflow sucked into the air can be smoothly sent to the circulation duct side. That is, at the back of the casing containing the heat exchange fan, the portion of the intake port provided at the center of the casing is:
The heat exchange fan is in a negative pressure state due to the air suction action. On the other hand, in the portion of the exhaust port provided on the outer peripheral wall of the casing, the continuous air flow from the heat exchange fan is not so smoothly fed into the exhaust port having a limited opening area, and the air pressure increases. . And, as in the present invention, a fluid that is located at the back of the casing that houses the heat exchange fan and that blocks the air flow flowing along the casing top plate surface on the downstream side of the exhaust port provided on the outer peripheral wall of the casing. If the damming member is not provided so as to extend from the intake port side of the central portion of the casing to the outer peripheral wall of the casing on the downstream side of the exhaust port, the air flow that has not been discharged from the exhaust port idles inside the casing. That is, as described above, the airflow flowing along the casing top plate surface is located at the back of the casing accommodating the heat exchange fan and downstream of the air outlet provided on the outer peripheral wall of the casing. According to the present invention, the fluid damping member that dams the air projects from the inlet at the center of the casing to the outer peripheral wall of the casing on the downstream side of the exhaust port. The air flow sent to the exhaust port side of the casing by the air blowing action of the fan is blocked by the fluid damping member, and is forcibly sent from the exhaust port to the circulation duct side. In addition, it is possible to improve the air blowing efficiency of the heated circulating air, and thus to improve the heat exchange efficiency, and at the same time, reduce the number of revolutions of the heat exchange fan by the air blowing efficiency up to reduce the noise generated from the fan. Can be. [Embodiment] Hereinafter, the present invention will be described with reference to an embodiment of the drawings. FIG. 1 is an external perspective view of a casing 9 which is a main part of the present invention, and FIG. FIG. 3 is a longitudinal sectional side view showing the entire configuration of the dryer, FIG. 3 is a longitudinal sectional side view of a main part of the casing 9 shown in FIG. 1, and FIG. 4 is a part of FIG. 2 showing the connection between the casing 9 and the heat exchange fan 7. It is an enlarged view. In FIG. 2 showing the overall structure of the clothes dryer, 1 is a dryer body, 2 is a rotatable drum that is rotatably mounted in the body 1, and is driven by a motor 3 and a drum belt 4.
Reference numeral 5 denotes a clothes input port provided on the front surface of the main body 1, reference numeral 6 denotes a heater for heating the drying air flowing into the rotary drum 2, and reference numeral 7 denotes a motor attached to the rear of the rotary drum 2 by a motor 3 and a fan belt 8. The fan 7 is a driven heat exchange fan. The fan 7 has a function of blowing heated circulating air inside the main body 1 and a heat exchange function inside and outside the main body 1. Reference numeral 9 denotes a casing. The casing 9 is located on the rear surface of the rotary drum 2 and has an intake port 10 in the center thereof. Reference numeral 11 denotes a filter for removing lint and the like provided on the rear surface of the rotary drum 2, reference numeral 17 denotes a mounting plate fixed to the rear surface of the main body 1, and the mounting plate 17 supports the rotary shaft 14 of the heat exchange fan 7 and a casing 9 And the partition plate 15 is fixed to the main body 1.
Reference numeral 20 denotes a back plate that covers the rear surface of the main body 1, 13 denotes a cooling-side intake port that draws outside air for cooling into the heat exchange fan 7, and 19 denotes a cooling-side exhaust port that discharges outside air for cooling after heat exchange to the outside of the main body 1. The cooling-side exhaust port 19 is provided in the back plate 20. The back plate 20 covers the rear surface of the main body 1 from the outside of the mounting plate 17 and the fan belt 8, and covers the cooling side of the heat exchange fan 7 exposed on the rear surface of the main body 1, thereby providing cooling air. Construct the casing. In addition, the casing 9 already described
Constitutes a casing on the drying air side. Further, the partition plate 15 partitions the outer peripheral portion of the heat exchange fan 7 back and forth, and hermetically isolates the drying side and the cooling side. Reference numeral 16 denotes a circulation duct, and the circulation duct 16 constitutes a ventilation path for guiding circulation side exhaust of the casing 9 to the heater 6. Reference numeral 18 denotes a drain for discharging condensed water generated by the heat exchange action of the heat exchange fan 7. In the above configuration, when the clothes dryer shown in FIG. 2 is operated, the high-temperature, high-humidity heating and circulating air in the dryer main body 1 is cooled and heat-exchanged by the heat-exchange fan 7, and the air in the air is dried. Moisture is condensed. On the other hand, the air in the main body 1 which has been dehumidified as described above is heated by the heater 6 and introduced into the rotary drum 2 again. Drying of the clothes stored in the inside progresses. In FIG. 2, arrow A indicates the flow of the heating and circulating air inside the dryer main body 1, and arrow B indicates the flow of the heat exchange cooling air inside and outside the main body 1. Here, the details of the casing 9, which is a main part of the present invention, will be described with reference to FIGS. 1, 3, and 4. In the figure, the same reference numerals as those in FIG. In FIG. 4, reference numeral 7 denotes a heat exchange fan housed in the casing 9. Then, by the rotation of the heat exchange fan 7, the airflow sucked into the casing 9 from the intake port 10 is sent to the circulation duct (reference numeral 16 in FIG. 2) from the exhaust port 22 provided on the outer peripheral wall 12 of the casing. . Reference numeral 23 denotes a top plate of the casing 9. The top plate 23 is provided with a step portion 24 adjacent to the intake port 10, and a ring-shaped member surrounding the intake port 10 is provided on an outer peripheral edge of the step portion 24. 25 are protruding. In FIG. 1, reference symbol C indicates the direction of rotation of the heat exchange fan 7, and the air flow flowing along the plate surface of the casing top plate 23 is located downstream of the exhaust port 22 provided in the outer peripheral wall 21 of the casing. A fluid damping member 26 for damping the water is provided so as to extend from the intake port 10 side in the center of the casing to the casing outer peripheral wall 21 on the downstream side of the exhaust port. Further, between the exhaust port 22 provided on the outer peripheral wall 21 of the casing and the fluid damping member 26 on the downstream side of the ventilation, the air flow sucked from the intake port 10 of the casing 9 is forcibly guided to the exhaust port 22. A protruding fluid forcing guide member 27 is provided. In FIG. 1, reference numeral 28 denotes a projection for attaching a humidity sensor (not shown). Here, although partially overlapping with the above description, the overall operation system of the clothes dryer will be described below. When the power is turned on and the motor 3 is driven, the rotating drum 2 containing the clothing rotates and the heat exchange fan 7
Rotates. The hot and humid air in the rotary drum 2 is sucked into the heat exchange fan 7 through the intake port 10 of the casing 9 as shown by an arrow A in FIG. The water generated by the condensation is discharged to the outside of the dryer main body 1 through the drain port 18. On the other hand, the air dehumidified by the condensation is supplied to the circulation duct 16.
, And is fed to the heater 6, where it is reheated and circulated in the rotating drum 2. The heat exchange fan 7
With the rotation of the air flow also occurs in the back plate 20,
This air flow is guided from the outside of the main body 1 to the heat exchange fan 7 through the cooling side intake port 13 as shown by an arrow B in FIG. Arrow A)
After the heat is removed from the main body 1, the air is exhausted out of the main body 1. Thus, according to the present invention, the casing outer peripheral wall 21 is located at the back of the casing 9 in which the heat exchange fan 7 is accommodated.
On the downstream side of the air outlet 22 provided at the air outlet, a fluid damming member 26 for damping the air flow flowing along the plate surface of the casing top plate 23 is provided on the downstream side of the exhaust port air blow from the intake port 10 side of the casing central portion. By projecting over the casing outer peripheral wall 21, the airflow sucked into the casing 9 from the rotary drum 2 side can be smoothly fed into the circulation duct 16 side. That is, at the back of the casing 9 in which the heat exchange fan 2 is housed, the intake port 10 provided at the center of the casing 9 is provided.
Is in a negative pressure state due to the air suction action of the heat exchange fan 2. Then, as in the present invention, it is located at the back of the casing 9 containing the heat exchange fan 2 and is located downstream of the exhaust port 22 provided in the outer peripheral wall 21 of the casing along the plate surface of the casing top plate 23. If the fluid damping member 26 for damping the flowing air does not project from the intake port 10 in the center of the casing to the casing outer peripheral wall 21 on the downstream side of the exhaust port, the casing outer peripheral wall 21
In the portion of the exhaust port 22 provided in the, the continuous air flow from the heat exchange fan 2 is not so smoothly fed into the exhaust port 22 having a limited opening area, the air pressure increases, The air flow that has not been exhausted from the exhaust port 22 wastefully idles inside the casing 9,
As described above, the casing 9 containing the heat exchange fan 2
A fluid damping member 26 for damping an air flow flowing along the plate surface of the casing top plate 23 on the downstream side of the air outlet 22 provided on the casing outer peripheral wall 21 at the back of the casing.
According to the present invention, the heat exchange fan 2 blows the air from the intake port 10 at the center of the casing to the casing outer peripheral wall 21 downstream of the exhaust port. At the same time, the airflow sent into the airflow is blocked by the fluid damping member 26, and the airflow blocked by the fluid damping member 26 is forced from the exhaust port 22 toward the circulation duct 16 by the damming action. As a result, the air blowing loss is small, the air blowing efficiency of the heated circulating air can be improved, and the heat exchange efficiency can be improved. At the same time, the rotation speed of the heat exchange fan 2 is reduced by the air blowing efficiency up. The noise generated from the fan 2 can be reduced, and according to the trial production experiment, the blowing efficiency of the heating circulating air in the dryer main body 1 is 5% as compared with the conventional clothes dryer. We were able to class tap. As shown in the illustrated embodiment, if a ring-shaped member 25 surrounding the intake port 10 at the center of the casing is protrudingly provided on the top plate 23 of the casing 9 at the back of the casing 9, the rotary drum 2 The air sucked into the casing 9 from the side can be moved along the ring-shaped member 25, and the rectifying action of the air flow in the casing 9 can be remarkably enhanced. Further, as shown in the illustrated embodiment, located at the back of the casing 9, between the exhaust port 22 provided on the casing outer peripheral wall 21 and the fluid damping member 26 on the downstream side of the ventilation.
A fluid forcible guide member 27 for forcibly guiding the air flow sucked from the intake port 10 at the center of the casing to the exhaust port 22.
Can be forcibly sent to the exhaust port 22 and, consequently, to the circulation duct 16 from the rotary drum 2 side into the casing 9, thereby contributing to further reduction of the blowing loss. be able to. [Effect of the Invention] The present invention is as described above, and as is apparent from the description of the illustrated embodiment, according to the present invention, the air flow sucked into the casing from the rotating drum side is smoothly circulated to the circulation duct. Side, the air blowing loss is small, the air blowing efficiency of the heating circulating air can be improved, and the heat exchange efficiency can be improved.At the same time, the rotation speed of the heat exchange fan is reduced by the air blowing efficiency up Thus, an improved clothes dryer capable of reducing noise caused by noise can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of a clothes dryer according to the present invention.
FIG. 2 is a perspective view showing an external appearance of a casing 9 which is a main part of the present invention, FIG. 2 is a vertical sectional side view showing the entire configuration of a clothes dryer incorporating the casing 9, and FIG. FIG. 4 is a partial enlarged view of FIG. 2 showing the connection between the casing 9 and the heat exchange fan 7. DESCRIPTION OF SYMBOLS 1 ... Dryer main body, 2 ... Rotary drum, 5 ... Clothing inlet, 6
... heater, 7 ... heat exchange fan, 9 ... casing, 10 ... intake port, 21 ... casing outer peripheral wall, 22 ... exhaust port, 23 ... casing top plate, 25 ... ring-shaped member, 26 ... fluid damping member,
27 ... Fluid forced guide member.

Continuing from the front page (72) Inventor, Masakatsu Hayashi 502, Kandate-cho, Tsuchiura-shi, Hitachi, Ltd.Mechanical Research Laboratory, Ltd. (72) Inventor Mitsuo Kudo 502, Kandachi-cho, Tsuchiura-shi, Ltd., Hitachi, Ltd. 56) References JP-A-61-232898 (JP, A) JP-A-62-2593 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06F 58/02-58/04

Claims (1)

(57) [Claims] A dryer body having a clothes inlet, a rotating drum mounted in the dryer body and containing clothes, a heating air blowing function in the dryer body located at a rear portion of the rotating drum, and a dryer body A heat exchange fan having a heat exchange function inside and outside, and a casing accommodating the heat exchange fan, and an air flow generated by rotation of the heat exchange fan is supplied to the casing through an air inlet provided at a central portion of the casing. After being guided to the air flow passage side on the back, it is sent into the circulation duct via the exhaust port provided on the outer peripheral wall of the casing, and the air flow sent into the circulation duct is heated by the heater and introduced into the rotating drum again. In the clothes dryer that repeats the above cycle, the air is blown downstream of the exhaust port provided on the outer peripheral wall of the casing, which is located at the back of the casing. Characterized in that a fluid damping member for damping an air flow flowing along a casing top plate surface is provided so as to extend from an intake port side in a central portion of the casing to an outer peripheral wall of a casing on a downstream side of an exhaust port. Machine. 2. In the clothes dryer according to claim 1,
A clothes dryer in which a ring-shaped member is provided at the back of the casing and surrounds an intake port at the center of the casing on the top plate surface of the casing. 3. In the clothes dryer according to claims 1 or 2, between the exhaust port provided on the outer peripheral wall of the casing and the fluid damping member on the downstream side of the ventilation, located at the back of the casing. A clothes dryer in which a fluid forced guide member for forcibly guiding an air flow sucked from an intake port at a central portion of a casing to the exhaust port is provided.