JP2766050B2 - Dryer - Google Patents

Description

The present invention relates to a dryer.

(B) Conventional technology As a conventional example, an outer tub is supported in a frame, a horizontal axis type drum is rotatably supported in the outer tub, and heated air is introduced into the drum while rotating the drum. By this, in the dryer for drying the material to be dried put into the drum,
A cooling chamber is juxtaposed to this dryer, and the wind after heat exchange with the object to be dried is introduced into the cooling chamber to dehumidify the air, and then introduced again into the drum as heated air. JP 58
-12686 (D06F25 / 00).

(C) Problems to be solved by the invention In the conventional example, lint generated from the material to be dried accumulates on the bottom of the outer tank, so it is necessary to periodically clean the lint, which is troublesome. . In particular, in equipment that also performs the washing operation, the accumulated lint floats in the washing water during washing,
There is a problem of sticking to laundry.

The present invention solves such a problem in a dryer.

(D) Means for Solving the Problems The present invention supports an outer tub in a frame, and in the outer tub,
Water for supporting a drying chamber having a large number of through-holes and introducing a drying air into the drying chamber to dry the object to be dried accommodated in the drying chamber, wherein the drying air is cooled and dehumidified A water supply means for supplying water, a drain port for discharging water supplied by the water supply means and guided into the outer tank to the outside of the outer tank, and drying the dehumidified water supplied from the water supply means during drying. A state in which the dehumidified water accumulated in the bottom of the outer tank is discharged to the outside of the outer tank through the drain port without being discharged to the outside of the outer tank via the drain port. And a control means for performing control to repeat the above.

Note that the dryer in the present invention is a device that performs a drying operation, and may be a device that performs only drying, or may be a device that automatically performs everything from washing to drying.

(E) Action Dehumidifying water is supplied from the water supply means to cool the dry air and dehumidify.

During drying, the dehumidified water supplied from the water supply means is stored in the bottom of the outer tank without being discharged to the outside of the outer tank via the drain port, and the dehumidified water collected in the bottom of the outer tank is drained. The state of discharging to the outside of the outer tank via the mouth is repeated. Specifically, a drain valve that opens and closes a drain port is provided, and the drain valve is intermittently opened and closed.

As a result, lint at the bottom of the outer tub that floats in the dehumidified water when the dehumidified water collects at the bottom of the outer tub is discharged to the outside of the outer tub together with the dehumidified water when the dehumidified water is discharged to the outside of the outer tub. You.

(F) Example An example of the present invention will be described with reference to the drawings.

In FIGS. 3 to 6, reference numeral 1 denotes a sheet metal frame;
2 is an outer tank formed of a synthetic resin in the shape of a horizontal axis drum, 3
Is a horizontal support surface formed on the lower surface of the outer tub 2, and 4 is an iron mounting plate fixed to the support surface 3.

Reference numeral 5 denotes an upper support for elastically suspending and supporting the outer tub 2 from the upper four corners of the frame 1, and reference numeral 6 denotes a portion between the mounting plate 4 of the outer tub 2 and the four corners of the bottom 1a of the frame 1. Is a cylindrical body integrally formed by protruding the upper part of the outer tub 2 upward in a rectangular cylindrical shape, whereby a clothing input port B8 is provided at the upper part of the outer tub 2. Is formed. Reference numeral 9 denotes an upper surface plate made of synthetic resin fixed to the upper end of the frame 1. An operation portion 9a for housing electronic components and the like at a front edge portion, and a housing portion 9b for housing a water supply device and the like at a rear edge portion. A swelling is formed, and a rectangular clothing inlet A10 is opened in the center. 11 are various operation keys provided on the upper surface of the operation section 9a. Reference numeral 12 denotes a bellows-shaped rubber packing, which allows the clothes input port A10 and the input port B8.
And are connected in a watertight manner. 13 is the clothing input port A10
A safety cover 14 for opening and closing the safety cover 13 is an upper cover for opening and closing the upper surface of the safety cover 13.

The outer tub 2 is formed separately from only the rear wall 2a, and the rear wall 2a is fixed after a drum described later is housed from a rear opening of the outer tub 2. Reference numeral 15 denotes a cylindrical portion integrally formed so as to protrude inward at a central portion of the rear wall 2a, 16
Is a blower duct integrally formed on the outer surface of the rear wall 2a, is formed from the upper center to the cylindrical portion 15, and a wall surface 17 covering the cylindrical portion 15 is close to the cylindrical portion 15, Here, a drum rear bearing 18 is fixed. A heater casing 19 is provided above the air duct 16.
Is formed, and a drying heater A20 is provided therein. Reference numeral 21 denotes an iron plate surrounding the heater A20, which prevents the resin material from being burned even if dust or the like is ignited.

Reference numeral 22 denotes an overflow chamber integrally formed at a half height of the rear wall 2a, and an overflow chamber for leading overflow from the outer tub 2 to the outside of the machine, and 23 is integrally formed at a lower portion of the rear wall 2a. The air trap is connected via a pressure hose 25 to a water level sensor 24 provided in the housing 9b. Reference numeral 26 denotes a circulation air passage integrally formed at a position above the overflow level of the rear wall 2a, and communicates with the inside of the outer tank 2 via a circulation port 27. Reference numeral 28 denotes a blower fan disposed in the circulation air passage 26. The circulation air passage 26 is provided with an intake port of the blower fan 28 (not shown). 29 is the circulation air passage 26
And a connection pipe for connecting the air duct 16 with the air duct 16.

Reference numeral 30 denotes a drain port provided near the corner at the bottom of the outer tub 2, 31 denotes a drain hose for leading drainage from the drain port 30 out of the machine, and the drain hose 31 includes The bottom of the chamber 22 is connected via a flood hose 32. 33 is a drainage electric valve that opens and closes the drain port 30,
As is well known, the valve is opened by winding the wire with the rotational force of the drain motor 34, and the valve is returned to the closed state by the urging of a spring (not shown) by cutting off the rotational force of the motor.

7 to 9, reference numeral 35 denotes a step formed at a height of about 1/3 of the inner peripheral wall of the outer tub 2;
The water supply cylinder is mounted and fixed on the upper side, and has a number of watering holes 37 formed along the lower surface so as to face downward in the mounted state. Further, one end of the water supply cylinder 36 is closed and the other end 38
Protrudes from the rear wall 2a of the outer tub 2. The other end 38 is threaded, and is fixed with a bolt after protruding from the rear wall 2a. 39 is the water bottle 36
It is a stop.

Numeral 40 is a double water supply solenoid valve device provided in the housing portion 9b, and one water supply valve A40a is connected to a connection port 42 formed in the cylindrical body 7 via a water supply hose A41, The other water supply valve B40b is connected to the other end 38 of the water supply cylinder 36 via a water supply hose B43. And the water supply hose B43
The water introduced into the water supply cylinder 36 from the water supply hole 37
Are discharged in the form of a shower, and travel along the inner peripheral surface of the outer tub 2 to reach the drain port 30.

Reference numeral 44 denotes a sheath heater B disposed on the inner bottom of the outer tub 2, and reference numeral 45 denotes a drum rear bearing fixed to the center of the front wall 2 b of the outer tub 2.

Reference numeral 46 denotes a synthetic resin horizontal shaft type washing / dewatering / drying drum rotatably supported in the outer tub 2 and fixed to the rear end of the body 47 having an open rear side. And a rear face plate 49 attached to the rear end side of the fluid balancer 48. Also, the trunk 47,
At the time of molding, a draft is provided, and the diameter is gradually increased from the front side to the rear side.

Reference numerals 50, 51, and 52 denote baffles having a triangular cross section formed by being bulged at 120 degrees along the inner peripheral surface of the trunk 47, and 53 ...
A large number of through-holes 54, 54 formed around the periphery of the 47 are horizontal ribs A, which are integrally formed along the inner peripheral surface of the body 47. The horizontal rib A54 is also formed on the upper surface of the baffle.

The balancer 48 is formed by enclosing a predetermined amount of salt water in a hollow annular body. Inside the balancer 48, resistance plates 55 are erected every 30 degrees inward from the rear side. 56 are recesses formed along the inner peripheral surface of the balancer 48, and the recesses 56 also function as resistance plates.

At the center of the rear panel 49, a suction port 57 inserted into the cylindrical portion 15 is formed so as to protrude therefrom. A support shaft 58 is fixed to the center of the suction port 57. Further, a fan 59 also serving as a filter is formed integrally with the suction port 57. Reference numeral 60 denotes a support shaft fixed to the center of the front plate 47a of the body 47. That is, at the time of drying, the drying air is blown by the blowing fan 28-the connecting pipe 29-the heater A20-the blowing duct 16-the suction port 5
7—the inside of the drum 46—the through hole 53—the circulation port 27—the circulation air passage 26—the blower fan 28—

During the drying, the water supply valve B40b is driven to supply water along the inner peripheral surface of the outer tub 2.
This water supply cools the drying air and dehumidifies it. Especially,
Since the water sprinkling holes 37 of the water supply cylinder 36 are in close proximity to the inner peripheral wall of the outer tank 2, the water discharged from the water sprinkling holes 37 is
It spreads thinly on the inner peripheral wall of the outer tub 2 in the form of a film to enlarge the dehumidifying area. Moreover, since one end of the water supply cylinder 36 is closed, the water from the water spray holes 37 is pressurized, and the formation of a film is promoted.

At this time, as shown in FIG.
The water supply cylinder 36 is provided near the corner of the peripheral wall opposite to the inner peripheral wall. Therefore, the water supply pipe 36 and the drain port
Since the dehumidifying water spreads over the entire bottom of the outer tub 2, the cooling area increases, and the cooling capacity increases.

Further, since the water supply cylinder 36 is mounted on the step 35 so as not to protrude in the direction of the drum 46, there is no concern that the size of the drum 46 is limited.

Reference numeral 61 denotes a rectangular clothing inlet C provided on the peripheral surface of the body 47, 62 a synthetic resin lid for opening and closing the inlet C61, and 63 a central part of the upper surface of the lid 62. This is a storage section that is recessed in the storage area and stores a laundry processing agent such as a detergent, a bleaching agent, and a softening agent in advance. 64 are horizontal ribs B integrally formed on one surface of the back surface of the lid 62, and have the same shape and projecting direction as the horizontal rib A54.

Then, when the balancer 48 is fitted to the trunk 47 and comes into contact with the end faces of the baffles 50, 51, 52, the trunk
After screwing the rear end of the balancer 47, the drum 46 is completed by applying the rear plate 49 to the rear surface of the balancer 48 and screwing the same.

Further, the drum 46 is rotatably supported by the drum rear bearing 18 and the drum front bearing 45 with its support shafts 58 and 60. The support shaft 60 protrudes from the front wall 2b of the outer tub 2, and a drive pulley 65 is fixed thereto.

66 is a washing motor fixed to the mounting plate 4 via a mounting bracket A67, 68 is a dehydration motor fixed to the mounting plate 4 via a mounting bracket B69, and the washing motor 66 and the dehydration motor 68 are The dehydrating motor 68 and the driving pulley 65 are connected via a pulley and a belt, respectively.

In such a configuration, the washing / dehydrating / drying machine of the present embodiment sequentially executes the respective steps of washing, rinsing, dehydrating, and drying according to a program.

During the washing process, the washing motor 66
The drum 46 is repeatedly inverted at a low speed, so that the laundry in the drum 46 is scooped up by the baffle and falls from above to below, so-called slap washing is performed, and at the same time, the lateral ribs A54, B64 ... Scrubbed. In the dehydrating step, the drum 46 is driven by the dehydrating motor 68.
Is rotated in one direction at high speed, and the laundry in the drum 46 is dehydrated by centrifugal force. In the drying step, the drum 46 is repeatedly inverted at a low speed by the washing motor 66, and drying air is introduced into the drum 46 from the blowing duct 16 and the suction port 57, so that the washing in the drum 46 is performed. Heat exchange occurs with the object.

Next, a specific circuit of the washing / dehydrating / drying machine according to the present embodiment will be described with reference to FIGS.

Reference numeral 70 denotes a microcomputer (for example, an LC6523 type manufactured by Sanyo Electric Co., Ltd., hereinafter referred to as a microcomputer) which is a control center.
ing unit), RAM72 (random access memory), ROM73
(Read only memory), a timer 74, a system bus 75, and input / output devices 76 and 77.

The CPU 71 includes a control unit 78 and a calculation unit 79,
The control unit 78 fetches and executes an instruction, and the arithmetic unit 79 performs a binary addition, a logical addition on data given from an input device or a memory by a control signal from the control unit 78 in an instruction execution stage. Performs calculation processing such as calculation, increase / decrease, and comparison. The RAM 72 is for storing data relating to the device, and the ROM 73 is configured to read in advance the means for operating the device, the setting of conditions for determination, rules for processing various information, and the like. It is something to keep.

The microcomputer 70 includes the various operation keys 11.
Input key circuit 80 composed of groups, the water level sensor 2
4, safety switch 8 that opens and closes in conjunction with the opening and closing of the upper lid 14
1, signals from the rotation detection reed switch 82 of the drum 46, the reference pulse generation circuit 83, and the abnormal foam detection electrode 84 are input, and the microcomputer 70 controls the forward / reverse rotation of the washing motor 66 based on these information. , The dewatering motor 68, the water supply solenoid valve A40a, the water supply solenoid valve B40b, the drain valve motor
34, the blower fan 28, the drying heater A20, the heater B44, a buzzer sounding circuit 85, various light emitting diodes (LED)
A drive signal is sent to each of the LED drive circuits 86 composed of groups. The microcomputer 70 and each load are connected via bidirectional thyristors 87 to 95, and the microcomputer 70 sends ON and OFF signals of the bidirectional thyristors 87 to 95.

The water level sensor 24 detects a water level change in the outer tub 2 as a pressure change in the air trap 23, and moves the magnetic body in the coil according to the pressure. As a result, the water level change indicates a change in the inductance of the coil. The change in the inductance is detected as a change in the oscillation frequency, and is input to the microcomputer 70. Thus, the microcomputer 70 continuously and widely detects the water level in the outer tub 2 based on the change in the oscillation frequency.

The operation of the drying process based on such a configuration will be described with reference to FIG.

In the drying step, the blower fan 28, the drying heater 20, the washing motor 66, and the water supply valve B40b are driven (S-1) to (S-
4) At the same time as the heated air is introduced into the drum 46,
For dehumidification, dehumidification water is passed down from the water supply cylinder 36 along the inner wall surface of the outer tub 2. During this time, since the drain valve 33 is closed, the dehumidified water gradually accumulates at the bottom of the outer tub 2 and the lint at the bottom of the outer tub floats in the dehumidified water. When the water level sensor 24 detects an extremely low water level lower than the lowermost part of the drum 46 (S-5), the drain motor
34, the drain valve 33 is opened for 15 seconds (S-
6). Thereby, the dehumidifying water accumulated at the bottom of the outer tub 2 is discharged out of the machine together with the lint. Hereinafter, (S-
The operations of 1) to (S-6) are repeated until the end, and when the drying is completed, the blower fan 28, the drying heater 20, the washing motor 66, and the water supply valve B40b are all turned off (S-7) to (S-1).
0).

Note that the drying step may be timed control, or may be, for example, a step of determining the degree of progress of drying using a humidity sensor.

As described above, by controlling the dehumidified water to be temporarily stored at the bottom of the outer tank 2, in addition to the water supply area from the water supply cylinder 36 to the drain port 30, the area of the portion where the dehumidified water is stored is also reduced. It becomes a cooling area, and a high cooling capacity can be obtained.

In addition, in FIG. 5, the drain port 30 is furthest away from the water supply cylinder 36. However, with such a control method, the cooling area does not change wherever the drain port 30 is provided.
The position of the drain port 30 is not limited, and the degree of freedom in design increases.

FIG. 2 shows another embodiment, in which the drain valve 33 is intermittently opened and closed at a cycle of 60 seconds OFF (closed) -15 seconds ON (open) during drying. Note that this cycle should be appropriately changed depending on the capacity of the outer tank 2 and the water supply capacity.

Further, the opening / closing cycle of the drain valve 33 may be set in minutes, for example, 30 minutes open and 2 minutes closed.

(G) Advantageous Effects of the Invention According to the dryer of the present invention, during drying, the dehumidified water supplied from the water supply means is stored in the bottom of the outer tub without being discharged to the outside of the outer tub through the drain port. By repeating the process of discharging the dehumidified water accumulated at the bottom of the outer tank to the outside of the outer tank via the drain port, lint in the outer tank can be efficiently discharged, and the lint at the bottom of the outer tank can be efficiently removed. Can be prevented from being deposited.

[Brief description of the drawings]

1 and 2 are flowcharts of a drying operation in different embodiments of a washing / dehydrating / drying machine employing the dryer of the present invention, FIG. 3 is a perspective view of the same drying machine, and FIG. FIG. 5 is a cross-sectional view, and FIG.
FIG. 7 is a rear view showing a cross section of the main part, FIG. 7 is a perspective view of the main part of the outer tank, FIG. 8 is an exploded perspective view of the same, FIG. 9 is a cross-sectional view of the same, FIG. Is a block diagram of a microcomputer. 1 ... frame, 2 ... outer tub, 30 ... drain outlet, 33 ...
Drain valve, 34 ... Drain motor (33, 34: automatic drain valve), 36
… Water cylinder, 40b… water valve B, 43… water hose B (3
6, 40b, 43: water supply means), 46 ... drum (drying room), 53
... through-hole, 70 ... microcomputer (control means).

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Shinji Yamaguchi 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (56) References JP-A-55-113493 (JP, A) 50-69372 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06F 58/02 D06F 58/28

Claims (1)

(57) [Claims] 1. An outer tub is supported in a frame.
Water for supporting a drying chamber having a large number of through-holes and introducing a drying air into the drying chamber to dry the object to be dried accommodated in the drying chamber, wherein the drying air is cooled and dehumidified A water supply means for supplying water, a drain port for discharging water supplied by the water supply means and guided into the outer tank to the outside of the outer tank, and drying the dehumidified water supplied from the water supply means during drying. A state in which the dehumidified water accumulated in the bottom of the outer tank is discharged to the outside of the outer tank through the drain port without being discharged to the outside of the outer tank via the drain port. And a control means for performing control to repeat the above.