JPH11290590A - Clothes dryer - Google Patents

Abstract

(57) [PROBLEMS] To provide a clothes dryer for circulating warm air into a rotating drum driven by a motor to dry clothes so that the circulating wind hits clothes in the rotating drum efficiently.
Improve drying efficiency. SOLUTION: A two-sided fan 3 having heat exchange function between a circulating air and a cooling air and having a blowing function is provided in a circulating-side fan case 1.
8, a heater 11 is provided in the vicinity of the air outlet 18b of the circulation-side fan case 18, and a plurality of air outlets 2b are provided in the rotary drum 2 corresponding to the heaters 11. Communication tunnel 17a and multiple ventilation holes 17b
Is fixed to the outer peripheral portion of the rotary drum 2, a substantially cylindrical inner seal 13 is provided on the outer periphery of the intake hole 18 a of the circulation side fan case 18, and a substantially cylindrical outer seal 14 is provided on the outer periphery of the heater 11. Is provided. The baffle 17 is formed by forming a wind tunnel 17a communicating with the air outlet 2b into a cylindrical shape that is closed airically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clothes dryer for circulating warm air in a rotating drum driven by a motor to dry clothes.

[0002]

2. Description of the Related Art Conventionally, a clothes dryer has been configured as shown in FIG. Hereinafter, the configuration will be described.

[0003] As shown in the figure, a rotary drum 2 for accommodating and stirring clothes is provided rotatably in an outer frame 1. The two-wing fan 3 has a function of blowing air while exchanging heat between the cooling air 4 and the circulating air 5, and is rotatably housed in the circulating fan case 6. The shaft 7 supports the rotating drum 2 and the two-wing fan 3. The motor 8 is a rotating drum 2
And the two-wing fan 3 is driven to rotate. The back plate 9 covers the rear surface of the outer frame 1 and is provided with a suction / exhaust port 9x for sucking / exhausting the cooling air 4.

The circulation-side fan case 6 is formed of resin, and has a recess 6c on the outer periphery that includes the two-wing fan 3 having a plurality of comb-shaped rings 3c in cross section. Vortex chamber 6 outside ring 3c
d is formed. In addition, the circulation side fan case 6 has an intake hole 6a at a substantially central portion, and an air outlet 6b at a substantially outer peripheral portion.

The cooling fan case 10 is formed by the flange 6 e extending from the circulation fan case 6 and the back plate 9.
Is formed. The heater 11 is provided near the outlet 6 b of the circulation-side fan case 6. The rotary drum 2 has an intake port 2a substantially at the center of the rear surface and a heater 11 at the outer periphery.
Are provided with a plurality of air outlets 2b.

The wind tunnel 1 communicating with the air outlet 2b
A baffle 12 having 2 a and a plurality of air holes 12 b is fixed to the outer peripheral portion of the rotating drum 2. Further, a substantially cylindrical inner seal 13 is provided on the outer periphery of the intake hole 6a of the circulation side fan case 6, and a substantially cylindrical outer seal 14 is provided on the outer periphery of the heater 11, so that the intake hole 6a and the outlet 6b are airtight. Separated.

The operation of the above configuration will be described. When the motor 8 rotates, the rotary drum 2 and the two-wing fan 3 rotate. When the two-wing fan 3 rotates, cooling air 4 and circulating air 5 are generated, and the circulating air 5 reaches the circulating fan case 6.
It passes between the inner seal 13 and the outer seal 14 through the heater 11 from the outlet 6b of the circulation side fan case 6,
The air is blown from the wind tunnel 12a of the baffle 12 to the blow hole 12b through the blow opening 2b of the rotating drum 2, and is introduced into the rotating drum 2 to stir and dry the clothes. A flow of returning to the hole 6a and the two-wing fan 3 is formed. On the other hand, the steam of the circulating air 5 which has exchanged heat with the clothes and has become hot and humid becomes condensed water,
From 5, the water is drained out of the outer frame 1.

[0008]

However, as described above, in the conventional clothes dryer, the baffle 12 is provided as shown in FIGS.
As shown in FIG. 6, a claw 12q is hooked and attached to the key-shaped hole 2g of the rotary drum 2 with a substantially U-shaped cross section, and the circulating wind 5 passing through the wind tunnel 12a of the baffle 12 is
There is a problem that the circulating air 5 is leaked from the mating surface 2p of the rotating drum 2 and the circulating air 5 is cooled from the surface of the rotating drum 2, the circulating air 5 does not efficiently hit the clothes, and the drying time becomes longer.

The cooling of the motor 8 is performed by forming the cooling holes 6f in the cooling fan case 10. However, since the motor 8 is located in front of the cooling holes 6f, the cooling efficiency is poor, and 8, the temperature rise of the winding becomes large,
There has been a problem that the characteristics of the motor 8 cannot be sufficiently brought out.

Further, the diameter (6 g) of the intake hole of the circulation side fan case 6 is larger than the root diameter (3 m) of the inner peripheral portion of the blade of the two-wing fan 3 (6 g> 3 m), and the heat exchange efficiency of the blade is improved. There was a problem of getting worse.

Further, in the circulation side fan case 6, since the space between the inner seal 13 and the outer seal 14 containing the heater 11 is formed of a synthetic resin, it is thermally deformed by the heat generated by the heater 11 or heat generated by the heater 11 is generated. There is a problem that the amount is taken away from the circulation-side fan case 6 and the drying efficiency is reduced.

If the filter 16 provided in front of the suction port 2a of the rotary drum 2 is clogged with a lot of lint from clothing, the internal pressure of the vortex chamber 6d increases, and the two-blade fan 3 of the circulation side fan case 6 is enclosed. There is a problem that the circulating air 5 and the condensed water leak out from the concave portion 6c and the amount of dehumidification decreases, and water leaks out of the outer frame 1.

Further, the filter 16 provided in front of the intake port 2a of the rotary drum 2 is clogged with a lot of lint coming out of clothing, and the amount of circulating air 5 from the intake hole 6a substantially at the center of the circulating fan case 6 is reduced. If the number decreases, the temperature of the peripheral portion of the heater 11 rises, and there is a problem that the circulation side fan case 6 formed of synthetic resin is thermally deformed.

The circulating air 5 heated by the heater 11 is cooled by the hot air from the blow hole 12 b of the baffle 12 because the space between the inner seal 13 and the outer seal 14 of the circulating fan case 6 is formed of synthetic resin. There was a problem that the temperature dropped.

The present invention has been made to solve the above-mentioned problems, and the circulating wind can efficiently hit clothes in a rotating drum.
The purpose is to improve the drying efficiency.

[0016]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a rotating drum having a suction port at a substantially central portion on a rear surface, which is rotatably disposed in an outer frame; The two-sided fan, which has a fan function and has a blowing function, is rotated by a motor, and the two-sided fan is rotatably housed in a circulation-side fan case that has an intake hole at the approximate center and an air outlet at the outer periphery. The cooling fan case is formed by the side fan case and the back plate provided with the air intake / exhaust port. A heater is provided close to the air outlet of the circulation side fan case, a plurality of air holes are provided in the rotating drum corresponding to the heater, and a baffle having an air channel communicating with the air holes and a plurality of air holes is rotated. A substantially cylindrical inner seal is provided on the outer periphery of the suction hole of the circulation-side fan case, and a substantially cylindrical outer seal is provided on the outer periphery of the heater. The baffle is formed by forming a wind tunnel communicating with an air outlet into a pneumatically closed cylindrical shape.

Thus, it is possible to prevent the hot air from leaking from between the baffle and the rotating drum, so that the circulating air can efficiently hit the clothes in the rotating drum, and the drying efficiency can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is a heat exchange between a circulating wind and a cooling wind, and a rotating drum having a suction port at a substantially central portion of a rear surface rotatably disposed in an outer frame. A two-sided fan having a blower function, a motor for rotating the rotating drum and the two-sided fan, and a circulation side provided with an intake hole at a substantially central portion and an outlet at a substantially outer peripheral portion for rotatably housing the two-sided fan. A fan case, a cooling-side fan case formed by the circulation-side fan case and a back plate provided with a suction / exhaust port, a heater provided in close proximity to an outlet of the circulation-side fan case, and a heater corresponding to the heater. A baffle fixed to the outer peripheral portion of the rotary drum having a plurality of air holes and a plurality of air holes communicating with a plurality of air holes provided in the rotary drum, and an air intake hole of the circulation side fan case provided on the outer circumference. Almost cylindrical The baffle is provided with an inner seal and a substantially cylindrical outer seal provided on the outer periphery of the heater, and the baffle is formed in a cylindrical shape in which an air tunnel communicating with an air outlet is closed in an air manner. The hot air can be prevented from leaking from between the rotating drum and the circulating wind can efficiently hit the clothes in the rotating drum, and the drying efficiency can be improved.

According to a second aspect of the present invention, in the first aspect of the present invention, the baffle has a substantially U-shaped cross section of the wind tunnel communicating with the air outlet, and the baffle covers the substantially flat lid from above to thereby provide air. It is formed in a cylindrical shape that is closed in a closed manner, and with a simpler configuration, it is possible to prevent hot air from leaking from between the baffle and the rotating drum, so that the circulating wind can efficiently hit the clothes in the rotating drum, and drying Efficiency can be improved.

According to a third aspect of the present invention, in the above first or second aspect, the circulating-side fan case comprises:
The vortex chamber includes a first fan case formed of a partition plate of a two-wing fan, and a second fan case for fixing the heater, the inner seal, and the outer seal, and the first fan case and the second fan case. A part of the cooling air is introduced into the motor from the fan case, the cooling air can be efficiently applied to the motor to cool the motor, the temperature rise of the windings of the motor is suppressed, and the characteristics of the motor are reduced. It can be fully utilized and the drying efficiency can be improved.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the circulation-side fan case includes:
A rectifying ring for introducing circulating air is provided at the root of the inner peripheral portion of the blade of the two-wing fan, and the rectifying ring has substantially the same diameter as the root diameter of the blade. Good intake can be achieved, dehumidifying performance and drying performance can be improved, and drying efficiency can be improved.

According to a fifth aspect of the present invention, in the above first or second aspect, the circulation-side fan case is
A generally donut-shaped fan case mounting plate is fixed as a heat shield between an inner seal and an outer seal enclosing a heater, and a heat insulating material is attached to a front surface or a back surface of the fan case mounting plate. Can be further contributed to drying, and the drying efficiency can be improved.

According to a sixth aspect of the present invention, in the above first or second aspect, the circulation-side fan case is
A pressure reducing valve that opens and closes from the circulation-side fan case to the cooling-side fan case is provided on the partition plate between the cooling-side fan case and the pressure-reducing valve that suppresses a rise in circulation-side pressure when the filter is clogged. As a result, the amount of dehumidification can be secured, the drying efficiency can be improved, and water leakage to the outside of the machine can be prevented.

According to a seventh aspect of the present invention, in the first or the second aspect of the present invention, the circulation-side fan case includes:
A hole and a weir are provided in the partition plate between the cooling-side fan case and a part of the cooling air of the two-sided fan to introduce the cooling air to the circulation-side fan case. The circulating wind can efficiently hit the clothes in the rotating drum, and the drying efficiency can be improved.

According to an eighth aspect of the present invention, in the first or second aspect of the present invention, the circulation-side fan case is provided with a blow-out port that does not pass through a heater, and a fan case mounting plate having a blow-out hole. A path is formed between the circulation-side fan case and the air outlet from the air outlet to the air outlet along the fan case mounting plate, and the air is introduced into the rotary drum, and the temperature of the hot air from the heater is reduced. Can be prevented, and the drying efficiency can be improved.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIGS. 1 to 3,
The baffle 17 has an air tunnel 17 a communicating with an air outlet 2 b of the rotary drum 2 and a plurality of air holes 17 b, and is fixed to an outer peripheral portion of the rotary drum 2. The wind tunnel 17a is formed in an air-closed cylindrical shape by blow molding, vacuum molding, or the like.

The circulation-side fan case 18 is formed of resin, houses the two-wing fan 3 rotatably, has an intake hole 18a at a substantially central portion, and has an air outlet 18b at a substantially outer peripheral portion. In addition, a concave portion 18c is provided on the outer periphery of the double-blade fan 3 having a plurality of comb-shaped rings 3c with a plurality of cross-sections. ing. Other configurations are the same as the conventional example.

The operation of the above configuration will be described. When the motor 8 rotates, the drum 5 and the two-wing fan 3 rotate. When the two-blade fan 3 rotates, the cooling air 4 and the circulating air 5 are generated, and the circulating air 5 reaches the circulating-side fan case 18. The baffle 17 passes between the outer seal 14 and the air outlet 2 b of the rotary drum 2.
From the wind tunnel 17a to the blow hole 17b, and is introduced into the rotary drum 2 to stir and dry the clothes.
a, the flow returns to the intake hole 18a of the circulation side fan case 18 and the two-wing fan 3. On the other hand, the steam of the circulating air 5 which has exchanged heat with the clothing and has become hot and humid becomes condensed water, and is discharged from the drain port 15 to the outside of the outer frame 1.

The circulating air 5 entering the wind tunnel 17a of the baffle 17 via the air outlet 2b of the rotary drum 2
Since the wind tunnel 17a of 7 is formed in an air-closed cylindrical shape, it is surely introduced into the rotary drum 2 from the air blow hole 17b without leaking from the gap between the baffle 17 and the rotary drum 2, thereby reducing heat loss. Indeed, all the circulating air 5 in the baffle 17 contributes to the drying, and the drying efficiency can be improved.

(Embodiment 2) As shown in FIGS. 4 and 5, a baffle 19 is provided with a wind tunnel 19a and a plurality of ventilation holes 19.
b, the wind tunnel 19a has a substantially U-shaped cross section when viewed from the outer peripheral surface of the rotary drum 2, and has a cylindrical shape that is air-closed by covering a substantially flat lid 20. Lid 20 is baffle 1
9 is fixedly accommodated by a stopper rib 19h and a fixing boss 19i provided in the cover 20, a hole 20j provided in the lid 20 and the fixing boss 1
9i, it is welded and fixed to form a tube. Other configurations are the same as those in the first embodiment.

According to the above configuration, the baffle 19 can be formed in a cylindrical shape with a simple configuration, and the circulating air 5 can be surely rotated from the ventilation holes 19b of the baffle 19 without leaking from the gap between the baffle 19 and the rotary drum 2. Since it is introduced into the drum 2, there is no thermal loss, and the circulating air 5 in the baffle 19 can all contribute to the drying, and the drying efficiency can be improved.

Further, when the lid 20 is formed of a heat insulating material such as a foam sheet, the cooling of the circulating air 5 from the outer peripheral surface of the rotary drum 2 can be prevented, and the drying efficiency can be further improved.

(Embodiment 3) As shown in FIGS. 6 and 7, a motor 8 is provided at a corner portion in the outer frame 1, and the vortex chamber of the circulation side fan case 18 is separated from the partition plate 21 of the two-wing fan 3. The formed first fan case 18y, the heater 11,
The second fan case 18x for fixing the shaft 7, the inner seal 13, the outer seal 14, and the like. Then, a hole 18yb is provided in the first fan case 18y,
By providing rails 18xr on the second fan case 18x and combining them, a substantially L-shaped cooling wind tunnel 18 is provided.
o. The tip of the cooling wind tunnel 18o is narrowed, so that when a part of the cooling wind 4 passes, the flow velocity is increased. A part of the cooling air 4 from the cooling wind tunnel 18o is introduced near the cooling hole 8k of the motor 8.
Other configurations are the same as those in the first or second embodiment.

With the above configuration, a part of the cooling air 4 passes through the rail 18xr from the hole 18yb of the first fan case 18y and is guided to the cooling hole 8k of the motor 8 as shown in FIG. The cooling air 4 can be efficiently applied and cooled, and the temperature rise of the windings of the motor 8 can be suppressed.
Characteristics can be fully utilized, and the drying efficiency can be improved.

(Embodiment 4) As shown in FIG. 8, a rectifying ring 18z for introducing the circulating air 5 to the root 3f of the inner peripheral portion of the blade of the two-blade fan 3 is provided in the circulating fan case 18; The inner diameter A of 18z is substantially the same as the diameter B of the root 3f of the blade. Other configurations are the same as those in the first or second embodiment.

With the above configuration, when the two-wing fan 3 rotates, the air is taken in from the rectifying ring 18z of the circulation-side fan case 18, and the circulation air 5 is introduced to the root 3f of the blade.
The entire surface of the blade becomes a heat exchange surface, and heat is exchanged efficiently. Therefore, the dehumidifying performance and the drying performance can be improved.

(Embodiment 5) As shown in FIG. 9, the circulation-side fan case 18 is formed of resin, and a shaft support plate 22 having an intake hole 18a is attached at a substantially central portion thereof. The shaft 7 is fixed to 22. A donut-shaped fan case mounting plate 23 is fixed to the circulation side fan case 18 as a heat shield between the inner seal 13 and the outer seal 14.

The inner seal 13 is sandwiched and fixed between the shaft support plate 22 and the fan case mounting plate 23, and the outer seal 14 is sandwiched between the cylindrical rib 18 s provided on the circulation fan case 18 and the fan case mounting plate 23. It is fixed. Further, a heat insulating material 24 is attached to the front or back surface of the fan case mounting plate 23. Other configurations are the same as those in the first or second embodiment.

With the above structure, the donut-shaped fan case mounting plate 23 is fixed to the circulation side fan case 18 as a heat shield between the inner seal 13 and the outer seal 14 including the heater 11. Since the heat insulating material 24 is attached to the front surface or the back surface of the
Heat of the circulation side fan case 18
The amount of heat generated by the heater 11 can be prevented from being taken away from the surface of the circulation-side fan case 18, and the drying efficiency can be improved.

(Embodiment 6) As shown in FIGS. 10 and 11, a partitioning plate 21 of a circulation side fan case 18 is provided with a pressure reducing valve 25 which opens and closes from the circulation side fan case 18 to the cooling side fan case 10. The pressure reducing valve 25 is formed of sheet-like rubber, and is fixed to the partition plate 21 with screws 26. When the pressure P1 on the circulation side becomes larger than the pressure P2 on the cooling side (P1> P2), a dotted line is shown. It is configured to open as shown by. Other configurations are the same as those in the first or second embodiment.

With the above configuration, when the lint coming out of the clothes adheres to the filter 16 and the clogging state becomes large, when the circulation side pressure P1 rises, the pressure reducing valve 25 is opened to prevent the circulation side pressure P1 from rising. As a result, the amount of dehumidification can be secured, the drying efficiency can be improved, and water leakage to the outside of the machine can be prevented.

(Embodiment 7) As shown in FIGS. 10 and 12, holes 27 for introducing a part of the cooling air 4 of the two-wing fan 3 into the circulation side fan case 18 are formed in the partition plate 21 of the circulation side fan case 18. And a weir 28 are provided. Other configurations are the same as those in the first or second embodiment.

According to the above configuration, when the lint coming out of the clothes adheres to the filter 16 and the clogging state becomes large, the circulating air 5 around the heater 11 decreases and the temperature rises. At this time, since a part of the cooling air 4 is introduced into the peripheral portion of the heater 11 through the hole 27, the temperature rise is suppressed, the thermal deformation of the circulation side fan case 18 can be prevented, and the desired drying Dehumidification performance can be secured.

(Embodiment 8) As shown in FIG. 13, the circulation side fan case 18 has an outlet 29 which does not pass through the heater 11.
And the fan case mounting plate 23 has a blowout hole 30. Other configurations are the same as those in the first or second embodiment.

With the above configuration, the circulating air 5 reaches the baffle 17 from the air outlet 2b of the rotary drum 2 via the heater 11 from the circulating fan case 18. On the other hand, the circulating air 5 flowing out of the air outlet 29 of the circulation side fan case 18 is
As a result, the heat flows along the fan case mounting plate 23 which has become hot, and reaches the baffle 17 from the air outlet 2b of the rotary drum 2 through the blowout hole 30 of the fan case mounting plate 23.

Due to this air flow, the heat of the fan case mounting plate 23 heated by the heater 11 contributes to the drying, and the drying efficiency can be improved.

[0048]

As described above, according to the first aspect of the present invention, a rotating drum having an intake port substantially at the center of the rear surface, which is rotatably disposed in the outer frame, circulating wind and cooling. A two-wing fan having a blowing function while exchanging heat with the wind, a motor for rotatingly driving the rotating drum and the two-wing fan,
A circulation-side fan case provided with an intake hole substantially at the center and an air outlet at a substantially outer periphery and rotatably housing the two-wing fan, and a back plate provided with the circulation-side fan case and a suction / exhaust port. A cooling-side fan case, a heater provided in close proximity to an outlet of the circulation-side fan case, a plurality of air holes provided in the rotary drum corresponding to the heater, and an air channel and a plurality of air holes A baffle fixed to the outer peripheral portion of the rotating drum, a substantially cylindrical inner seal provided on an outer periphery of an intake hole of the circulation side fan case, and a substantially cylindrical outer seal provided on an outer periphery of the heater. The baffle has a wind tunnel communicating with an air outlet formed in an air-closed cylindrical shape, so that it is possible to prevent leakage of hot air from between the baffle and the rotating drum, and to circulate air through clothes in the rotating drum. Hits efficiently Cormorants can turn, can improve the drying efficiency.

According to the second aspect of the present invention, the baffle has a substantially U-shaped cross section of the wind tunnel communicating with the air outlet,
By forming the substantially flat lid from above to form an air-closed cylindrical shape, it is possible to prevent hot air from leaking from between the baffle and the rotating drum with a simpler configuration, and to circulate air through the clothes in the rotating drum. Can be applied efficiently, and the drying efficiency can be improved.

According to the third aspect of the present invention, the circulation-side fan case includes a first fan case in which a vortex chamber is formed by a partition plate of a two-wing fan, the heater, an inner seal, and an outer seal. The first fan case and the second fan case introduce a part of the cooling air into the motor from the first fan case and the second fan case.
The cooling air can be efficiently applied to the motor to cool it,
The temperature rise of the windings of the motor can be suppressed, the characteristics of the motor can be fully utilized, and the drying efficiency can be improved.

According to the fourth aspect of the present invention, a rectifying ring for introducing circulating air is provided at the root of the inner peripheral portion of the blade of the two-blade fan in the circulating-side fan case, and the rectifying ring is The diameter is almost the same as the root diameter of
Drying performance can be improved, and drying efficiency can be improved.

According to the fifth aspect of the present invention, in the circulation-side fan case, a substantially donut-shaped fan case mounting plate is fixed as a heat shield between the inner seal and the outer seal containing the heater. Since the heat insulating material is attached to the front surface or the back surface of the fan case mounting plate, the calorific value of the heater can be further contributed to the drying, and the drying efficiency can be improved.

According to the sixth aspect of the present invention, the circulation side fan case is provided with a pressure reducing valve which opens and closes from the circulation side fan case to the cooling side fan case on a partition plate between the circulation side fan case and the cooling side fan case. Therefore, when the filter is clogged, the pressure on the circulation side can be suppressed by the pressure reducing valve,
The amount of dehumidification can be secured, the drying efficiency can be improved, and water leakage to the outside of the machine can be prevented.

According to the seventh aspect of the present invention, the circulation-side fan case introduces a part of the cooling air of the two-sided fan into the circulation-side fan case to the partition plate between the circulation-side fan case and the cooling-side fan case. Since the holes and weirs are provided, it is possible to prevent thermal deformation around the heater when the filter is clogged,
The circulating wind can efficiently hit the clothes in the rotating drum, and the drying efficiency can be improved.

According to the present invention, the circulation-side fan case is provided with an air outlet which does not pass through a heater, and the fan case is provided between the circulation-side fan case and the fan case mounting plate having the air outlet. A path is formed along the mounting plate from the outlet to the outlet, and the air is introduced into the rotary drum, so that the temperature of the hot air from the heater can be prevented from lowering, and the drying efficiency can be improved. it can.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a clothes dryer according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the clothes dryer, with a part cut away.

FIG. 3 is an enlarged perspective view of a baffle of the clothes dryer.

FIG. 4 is an exploded perspective view of a baffle of a clothes dryer according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a baffle of the clothes dryer.

FIG. 6 is a rear view of the clothes dryer according to the third embodiment of the present invention with the back plate removed.

FIG. 7 is an exploded perspective view of a main part of the clothes dryer.

FIG. 8 is a sectional view of a main part of a clothes dryer according to a fourth embodiment of the present invention.

FIG. 9 is an exploded perspective view of a main part of a clothes dryer according to a fifth embodiment of the present invention.

FIG. 10 is a perspective view of a circulation-side fan case of a clothes dryer according to a sixth embodiment of the present invention.

FIG. 11 is an enlarged sectional view of a main part of the clothes dryer.

FIG. 12 is a sectional view of a main part of a clothes dryer according to a seventh embodiment of the present invention.

FIG. 13 is an exploded perspective view of a main part of a clothes dryer according to an eighth embodiment of the present invention.

FIG. 14 is a longitudinal sectional view of a conventional clothes dryer.

FIG. 15 is an exploded perspective view of a main part of the clothes dryer, with a part cut away.

FIG. 16 is an enlarged sectional view of a main part of the clothes dryer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer frame 2 Rotating drum 2a Inlet 2b Inlet 3 Fan on both sides 8 Motor 9 Back plate 9x Inlet / exhaust port 10 Cooling side fan case 11 Heater 13 Inner seal 14 Outer seal 17 Baffle 17a Wind tunnel 17b Blow hole 18 Circulating side fan case 18a intake hole 18b outlet

Claims (8)

[Claims] 1. A rotary drum having an air inlet at a substantially central portion on a rear surface rotatably disposed in an outer frame, a double-blade fan having a function of blowing air while exchanging heat between circulating air and cooling air; A motor that rotates the two-wing fan,
A circulation-side fan case provided with an intake hole substantially at the center and an air outlet at a substantially outer periphery and rotatably housing the two-wing fan, and a back plate provided with the circulation-side fan case and a suction / exhaust port. A cooling-side fan case, a heater provided in close proximity to an outlet of the circulation-side fan case, a plurality of air holes provided in the rotary drum corresponding to the heater, and an air channel and a plurality of air holes A baffle fixed to the outer peripheral portion of the rotating drum, a substantially cylindrical inner seal provided on an outer periphery of an intake hole of the circulation side fan case, and a substantially cylindrical outer seal provided on an outer periphery of the heater. A clothes dryer in which the baffle is formed in a tubular shape in which an air tunnel communicating with an air outlet is air-closed. 2. The clothes dryer according to claim 1, wherein the baffle has a substantially U-shaped cross section of the wind tunnel communicating with the blower opening, and is formed in a pneumatically closed cylindrical shape by covering a substantially flat lid from above. . 3. The circulation-side fan case includes a first fan case in which a vortex chamber is formed by a partition plate of a two-wing fan, and a second fan case for fixing the heater, the inner seal, and the outer seal. 3. The clothes dryer according to claim 1, wherein a part of cooling air is introduced into the motor from the first fan case and the second fan case. 4. A circulating-side fan case, wherein a rectifying ring for introducing circulating air is provided at a root of an inner peripheral portion of a blade of the two-wing fan, and the rectifying ring has a diameter substantially equal to a root diameter of the blade. 3. The clothes dryer according to 1 or 2. 5. The circulation-side fan case has a substantially donut-shaped fan case mounting plate fixed as a heat shield plate between an inner seal and an outer seal enclosing a heater, and is insulated on a front surface or a back surface of the fan case mounting plate. 3. The clothes dryer according to claim 1, wherein a material is attached. 6. The clothes dryer according to claim 1, wherein the circulation side fan case is provided with a pressure reducing valve that opens and closes from the circulation side fan case to the cooling side fan case on a partition plate between the circulation side fan case and the cooling side fan case. . 7. The circulation-side fan case is provided with a hole and a weir on a partition plate between the circulation-side fan case and the cooling-side fan case for introducing a part of the cooling air of the two-wing fan into the circulation-side fan case. The clothes dryer as described. 8. A circulation side fan case is provided with an air outlet which does not pass through a heater, and a blow hole is formed between the fan case mounting plate having an air outlet and the circulation side fan case along the fan case mounting plate from the air outlet. The clothes dryer according to claim 1 or 2, wherein a path for flowing the air is formed, and the air is introduced into the rotating drum.