JPH0994396A - Bathroom heating clothes drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent inconvenience that equipments around a heater become a high temperature by the remaining heat of the heater by operating a fan for hot air circulation during the operation of the heater, continuing the operation of the fan for the hot air circulation even after the operation of the heater is stopped and stopping the operation of the fan for the hot air circulation at the point of time when prescribed conditions are satisfied. SOLUTION: After a high-speed drying switch 41 is turned ON and the high- speed drying operation of this bathroom heating clothes drier is performed, when the high-speed drying switch 41 is turned OFF, by the operation of a drying control circuit 31a, an exhaust fan relay 34, a wind direction change device relay 35 and first and second heater relays 36a and 36b are turned OFF. As a result, the operations of a multi-layer disk fan 13 for exhaustion, the motor 11 of a swash plate type wind direction change device and first and second heaters 7a and 7b are stopped. However, the high-speed rotation of the disk fan 3 for the hot air circulation is continued, the remaining heat of the heaters 7a and 7b is removed by high-speed which from the fan 3, and thereafter, when the detection temperature of a temperature sensor 8 lowers to a prescribed value, the fan 3 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accommodates a warm air circulation fan, a heater, and a warm air circulation fan and a heater.
The present invention relates to a bathroom heating clothes dryer including a casing having a hot air outlet and a circulation intake.

[0002]

2. Description of the Related Art In a bathroom heating clothes dryer provided with a warm air circulation fan, a heater, and a casing for accommodating the warm air circulation fan and the heater and having a warm air outlet and a circulation intake port formed therein. Conventionally, control was performed so that the operation of the warm air circulation fan is also stopped at the same time as the operation of the heater is stopped.

[0003]

In the conventional bathroom heating clothes dryer, since the operation of the heater is stopped at the same time as the operation of the heater is stopped, the heater is operated after the drying operation in which the heater is operated is completed. However, there is a problem that the equipment around the heater becomes hot due to the residual heat and deteriorates. The present invention has been made in view of the above problems, and provides a bathroom heating clothes dryer in which there is no risk of the peripheral equipment of the heater becoming hot due to the residual heat of the heater after the drying operation in which the heater is operated is completed. With the goal.

[0004]

In order to solve the above-mentioned problems, in the present invention, a hot air circulating fan, a heater, a warm air circulating fan and a heater are housed, and a hot air outlet and a circulating fan are accommodated. When the casing with the intake port and the heater is operating, the hot air circulation fan is activated, and the hot air circulation fan is activated even after the heater is deactivated. A bathroom heating clothes dryer, comprising: a control means for stopping the operation of a circulation fan. In the bathroom heating clothes dryer according to the present invention, the hot air circulation fan continues to operate even after the heater has stopped operating, and the residual heat of the heater is removed. Therefore, after the drying operation in which the heater is operated is completed, there is no possibility that the equipment around the heater becomes high temperature due to the residual heat of the heater. Since the operation of the hot air circulation fan is stopped when a predetermined condition is satisfied, the operation of the hot air circulation fan continues for a long time after the operation of the heater is stopped, and power is wasted. There isn't it. In a preferred aspect of the present invention, the control means stops the operation of the warm air circulation fan when the temperature around the heater falls below a predetermined value. In a preferred aspect of the present invention, the control means stops the operation of the hot air circulation fan when a predetermined time has elapsed after the operation of the heater was stopped.
The condition for stopping the operation of the hot air circulation fan may be a decrease in the temperature around the heater to a predetermined value or lower, or a lapse of a predetermined time from the stop of the heater operation. . In a preferred aspect of the present invention, the control means restarts the operation of the heater before a predetermined time elapses after the operation of the heater is stopped, and restarts the operation of the heater again before the predetermined time elapses. When stopped, the operation of the warm air circulation fan is stopped when the predetermined time has elapsed. If the heater operation is restarted before a predetermined time has elapsed after the heater operation was stopped, and if the restarted heater operation is stopped again before the predetermined time has elapsed, the heater is restarted. The heating time is short and the temperature rise around the heater is small. Therefore, even if the operation of the hot air circulation fan is stopped at the time when a predetermined time based on the stop of the heater operation before the heater operation is restarted, the temperature around the heater can be reduced to a desired value. In a preferred aspect of the present invention, the control means restarts the operation of the heater before a predetermined time elapses after the operation of the heater is stopped, and restarts the operation of the heater again before the predetermined time elapses. When stopped, the operation of the hot air circulation fan is stopped at the time point when the time obtained by adding the time from the restart of the heater operation to the stop thereof again in the predetermined time has elapsed. When the operation of the heater is restarted before a predetermined time elapses after the operation of the heater is stopped, and the restarted operation of the heater is stopped again before the predetermined time elapses, the operation of the heater is restarted. Raised by restarting the heater operation by continuing the operation of the circulation fan until the time obtained by adding the time from when the heater operation is restarted to when it is stopped again to the predetermined time based on the heater operation stop The temperature around the heater can be reliably reduced to a desired value. In a preferred aspect of the present invention, the control means controls the operation of the hot air circulation fan at the same rotation speed as the rotation speed of the hot air circulation fan during the immediately preceding heater operation after the heater operation is stopped. continue. After the operation of the heater is stopped, if the rotation speed of the hot air circulation fan is increased in order to accelerate the decrease in the temperature around the heater, the noise increases and the user feels uncomfortable. After the operation of the heater is stopped, the operation of the hot air circulation fan is continued at the same rotation speed as the rotation speed of the hot air circulation fan during the operation of the heater immediately before, thereby preventing an increase in noise, It is possible to reduce the temperature around the heater without making the user feel uncomfortable. In a preferred aspect of the present invention, the control means, after the operation of the heater is stopped,
The hot air circulation fan continues to operate at the lowest speed that can be set. After the heater operation is stopped, the warm air circulation fan continues to operate at the lowest speed that can be set, and the temperature around the heater is reduced without impairing the quietness of the living environment. You can

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION A bathroom heating clothes dryer according to an embodiment of the present invention will be described with reference to FIGS. Inside a box-shaped casing 1 having a substantially square planar shape, an inner wall 2 extending from a top wall, that is, an outer wall on the front side of the paper in FIG. 1 to a bottom wall, that is, an outer wall on the rear side of the paper in FIG. And an exhaust compartment 1b are defined. A multi-layer disk fan 3 for circulating warm air is arranged in the circulation compartment 1a. As shown in FIG. 2, a multi-layer disk fan 3 for circulating warm air
Is a plurality of annular plate-shaped fan blades 3a ₁ that are laminated with a small space between each other, and adjacent fan blades 3
and a impeller 3a having a plurality of the vanes 3a ₂ which are arranged at spaced intervals to each other in the circumferential direction between a _1.

As shown in FIG. 1, a logarithmic spiral air guide plate 4 extending from the top wall to the bottom wall of the casing 1 is disposed around the warm-air circulating multilayer disk fan 3. A circulation intake port 5 is formed on the bottom wall of the casing 1 in the circulation compartment 1a so as to face the warm air circulation multilayer disc fan 3. A rectangular air outlet 6 is formed at the corner of the bottom wall of the casing in the circulation compartment 1a. The air guide plate 4 is
One end extends to a position near the air outlet 6 and the other end is connected to the side wall of the casing facing the one end. The first heater 7 is provided in a space surrounded by the vicinity of the one end of the air guide plate 4, the side wall of the casing 1 facing the vicinity of the one end, the top wall of the casing 1 and the bottom wall of the casing 1.
a and the second heater 7b are provided. Heaters 7a, 7
A temperature sensor 8 is arranged near b.

As shown in FIG. 1, a rim plate 9 is provided upright outside the casing around the air outlet 6. The rotating shaft 10 is provided between two opposing edge plates 9a and 9b on the short side, and between the center of the edge plate 9a and the center of the edge plate 9b when the air outlet 6 is viewed from the front, and the edge plate It is erected orthogonally between 9a and 9b. The motor 11 is fixed to the outside of the edge plate 9b. One end of the rotary shaft 10 is connected to the motor 11. The rotating shaft 10 has three elliptical swash plates 12a, 1a each having a minor axis slightly shorter than the short side of the air outlet 6.
2b and 12c are arranged at intervals in the extending direction of the rotating shaft 10 and are inclined with respect to the rotating shaft 10 so that the projected shape of the rotating shaft 10 in the extending direction is circular. There is. At the center of the swash plates 12a, 12b, 12c,
It is penetrated by the rotary shaft 10 and is fixed to the rotary shaft 10. The end of the swash plate 12a facing the edge plate 9a and the swash plate 12
The end portion of the c facing the edge plate 9b is linearly cut in the direction orthogonal to the rotation axis 10 near the center line of the elliptical shape in the minor axis direction. Swash plates 12a, 12c
Are the edge plates 9 that face the linear notch edges, respectively.
It is arranged close to a and 9b. The rotating shaft 10,
By the motor 11 and the swash plates 12a, 12b, 12c,
A swash plate type airflow direction changing device 20 is formed.

An exhaust multilayer disc fan 1 having the same structure as the warm air circulating multilayer disc fan 3 is provided in the exhaust compartment 1b.
3 are provided. A part of the inner wall 2 is formed in a logarithmic spiral shape to form an air guide plate. On the bottom wall of the casing 1 in the exhaust compartment 1b, the exhaust multilayer disc fan 13
An exhaust air intake port 14 is formed opposite to. An exhaust port 15 is formed on the side wall of the casing 1 in the exhaust compartment 1b.

A control device 30 is arranged in the circulation compartment 1a. As shown in FIG. 3, the controller 30 includes a drying control circuit 31a including a memory in which a control program is stored.
A microcomputer 31 having a temperature detection circuit 31b and a timer circuit 31c, a circulation fan high speed rotation relay 32,
Circulation fan low speed rotation relay 33 and exhaust fan relay 3
4, a wind direction changing device relay 35, and a first heater relay 3
6a and a second heater relay 36b. As shown in FIGS. 1 and 4, a driving operation panel 4 is provided in the bathroom 200.
0 is provided. The operation control panel 40 is provided with a high speed drying switch 41, a standard drying switch 42, and a blast drying switch 43. As shown in FIG.
A temperature signal from the temperature sensor 8 and an operation signal from the operation panel 40 are input to the control device 30, and the control device 30 causes the warm air circulating multilayer disc fan 3 and the exhaust multilayer disc fan 13 to be supplied. The motor 11 of the swash plate type wind direction changing device 20,
The control signal is output to the first heater 7a and the second heater 7b.

The bathroom heating clothes dryer A having the above structure
As shown in FIG. 4, the casing 1 is used by being fixed to the ceiling of the bathroom 200, with the bottom surface of the casing 1 facing downward, covering an opening (not shown) formed in the ceiling of the bathroom 200. The exhaust port 15 is connected to the exhaust duct 300. When the bathroom heating clothes dryer A is fixed to the ceiling of the bathroom 200,
A clothesline pole 201 installed between the side walls of the bathroom 200
Is arranged immediately above and the rotation shaft 10 of the swash plate type airflow direction changing device 20 is positioned so as to extend in the same vertical plane as the clothes pole 201.

The operation of the bathroom heating clothes dryer A having the above-mentioned structure and positioned as described above and attached to the ceiling of the bathroom 200 will be described. When the user turns on the high speed drying switch 41, the circulation fan high speed rotation relay 3 is operated by the operation of the drying control circuit 31a as shown in FIG.
2, exhaust fan relay 34, wind direction changing device relay 35,
The first heater relay 36a and the second heater relay 36b are O
N, the multi-layer disk fan 3 for circulating warm air rotates at high speed, the multi-layer disk fan for exhaust 13 rotates, the motor 11 of the swash plate type airflow direction changing device 20 rotates, and the first heater 7a and the second heater 7b are rotated. Works. As a result, the heating clothes dryer A enters a high speed drying operation state. The high-speed air discharged from the hot-air circulating multilayer disc fan 3 rotating at high speed is supplied to the first heater 7a,
The hot air of high temperature and high speed is generated through the second heater 7b, and is blown into the bathroom 200 through the air outlet 6. Bathroom 200
The high-temperature, high-speed warm air blown into the inside of the clothes drying pole 20
Moisture is removed from the clothes 400 hung at 1. Clothing 400
A part of the warm air that has been dehumidified to become low temperature and high humidity flows into the casing 1 through the circulation intake port 5, and the warm air circulation multilayer disc fan 3, the first heater 7a, and the second heater 7b. Via, and becomes hot air with high temperature and high speed, and is returned to the bathroom 200. The other part of the warm air that has taken off moisture from the clothes 400 and has become low temperature and high humidity flows into the casing 1 through the exhaust air intake port 14 and passes through the exhaust multilayer disc fan 13 and the exhaust air port 15. And is exhausted to the exhaust duct 300. Since a large amount of high-temperature hot air is supplied to the bathroom 200, the clothes 400
Is dried fast. Rotating shaft 1 of swash plate type wind direction changing device 20
0 rotates by receiving the driving force of the motor 11, and the swash plates 12a to 12c rotate accordingly. Air outlet 6 and edge plate 9
The warm air that has passed through the rectangular space surrounded by
The flow direction can be changed by a to 12c. As a result, the direction of the warm air blown into the bathroom 200 through the swash plate type airflow direction changing device 20 changes with time and in a swinging manner within the vertical plane including the rotating shaft 10. Since the clothes-drying pole 201 installed in the bathroom 200 extends in the vertical plane including the rotating shaft 10, warm air is blown to all of the plurality of clothes 400 suspended over the entire length of the clothes-drying pole 201. Hit As a result, the drying efficiency of clothes is improved.

When the user turns on the standard drying switch 42, the drying control circuit 31a operates, as shown in FIG. 5, the circulation fan low speed rotation relay 33, the exhaust fan relay 34, the wind direction changing device relay 35, and the first heater. Relay 36
a is turned on, the warm air circulating multilayer disc fan 3 rotates at a low speed, the exhaust multilayer disc fan 13 rotates, the motor 11 of the swash plate type airflow direction changing device 20 rotates, and the first heater 7a operates. . As a result, the heating clothes dryer A enters the standard drying operation state. The low-speed air discharged from the hot-air circulation multilayer disc fan 3 rotating at low speed becomes high-temperature low-speed warm air via the first heater 7a, and passes through the air outlet 6 to the bathroom 200.
Blow out inside. The high-temperature, low-velocity warm air blown into the bathroom 200 removes water from the clothes 400 hung on the clothes-drying pole 201. A part of the warm air that has taken off the moisture from the clothes 400 and becomes low temperature and high humidity flows into the casing 1 through the circulation intake port 5, and passes through the warm air circulation multilayer disc fan 3 and the first heater 7a. Then, it becomes hot air with high temperature and low speed, and the bathroom 20
Reflux to 0. The other part of the warm air that has taken off moisture from the clothes 400 and has become low temperature and high humidity flows into the casing 1 through the exhaust air intake port 14 and passes through the exhaust multilayer disc fan 13 and the exhaust air port 15. And is exhausted to the exhaust duct 300.
Since hot hot air is supplied to bathroom 200 in a small amount, clothes 400 are dried at a medium speed. By rotating the motor 11 of the swash plate type wind direction changing device 20, the clothes-drying pole 20
All of the plurality of clothes 400 hung over the entire length of 1 are exposed to warm air, and the drying efficiency of clothes is increased.

When the user turns on the blast / drying switch 43, the drying control circuit 31a operates to turn on the circulation fan high-speed rotation relay 32, the exhaust fan relay 34, and the wind direction changing device relay 35, as shown in FIG. The hot-air circulating multi-layer disk fan 3, the exhaust multi-layer disk fan 13, and the motor 11 of the swash plate type airflow direction changing device 20 rotate. As a result,
The heating clothes dryer A is in the blast drying operation state. The high-speed air discharged from the hot-air circulating multilayer disc fan 3 rotating at high speed becomes room-temperature high-speed air, and passes through the air outlet 6 to the bathroom 2
Blow out into 00. The room-temperature high-speed air blown into the bathroom 200 removes water from the clothes 400 hung on the clothes-drying pole 201. A part of the wind that has taken away moisture from the clothes 400 and has become low temperature and high humidity flows into the casing 1 through the circulation intake port 5, passes through the warm air circulation multilayer disc fan 3,
It becomes high-speed air at room temperature and returns to the bathroom 200. Clothing 400
The other part of the wind, which has been dehumidified to become low temperature and high humidity, flows into the casing 1 through the exhaust air intake port 14, passes through the exhaust multilayer disk fan 13 and the exhaust port 15, and is exhausted. The air is exhausted to the duct 300. Large amount of room temperature air in bathroom 20
0, so the garment 400 is slow dried. By rotating the motor 11 of the swash plate type airflow direction changing device 20, the wind hits all of the clothes 400 hung over the entire length of the clothes pole 201, and the drying efficiency of clothes is increased.

In this bathroom heating clothes dryer A, a multi-layer disk fan 13 is used as an exhaust fan. In recent years, the noise of the exhaust fan tends to increase due to the increase in the intake resistance of the exhaust fan accompanying the improvement of the airtightness of the bathroom. However, in the bathroom heating clothes dryer A, the exhaust fan has a highly quiet multi-layer structure. Since the disk fan 13 is used, higher quietness can be obtained as compared with the conventional bathroom heating clothes dryer.

When the user turns on the high-speed drying switch 41 to drive the bathroom heating clothes dryer A at high speed, and then turns off the high-speed drying switch 41, the drying control circuit 31a operates, as shown in FIGS. Exhaust fan relay 3
4, wind direction changing device relay 35, first heater relay 36
a, the second heater relay 36b is turned off, the exhaust multi-layer disc fan 13 and the motor 11 of the swash plate type airflow direction changing device 20.
Is stopped, and the operation of the first heater 7a and the second heater 7b is stopped. The multi-layer disk fan 3 for circulating warm air is not turned off and continues to rotate at high speed. As a result, the bathroom heating clothes dryer A is in the cooling operation state. The residual heat of the first heater 7a and the second heater 7b is removed by the high-speed air from the hot-air circulating multilayer disk fan 3 that rotates at high speed. Therefore, after the high-speed drying work is completed, there is no possibility that the peripheral equipment of the heaters becomes high temperature due to the residual heat of the first heater 7a and the second heater 7b. When the bathroom heating clothes dryer A enters the cooling operation state, the temperature sensor 8 and the timer circuit 31c start operating as shown in FIG. 6 by the operation of the drying control circuit 31a. The temperature signal from the temperature sensor 8 is input to the drying control circuit 31a via the temperature detection circuit 31b, and the count signal of the timer circuit 31c is input to the drying control circuit 31a. The drying control circuit 31a detects when the temperature detected by the temperature sensor 8 has dropped to a predetermined value T (for example, 40 ° C.), or the timer circuit 31c.
After the count reaches a predetermined value S (for example, 30 seconds), the operation of the warm air circulation multilayer disc fan 3 and the operation of the temperature sensor 8 are stopped, and the Kant value of the timer is reset to 0. The operation of the timer circuit 31c is stopped. The operation of the multilayer disc fan 3 for warm air circulation is stopped when a predetermined condition is satisfied, so that the warm air circulation is continued for a long time after the operation of the first heater 7a and the second heater 7b is stopped. It is possible to prevent the situation in which the multi-layer disc fan 3 for use continues to operate and power is wasted. As a measure for accelerating the decrease in the temperature around the heater, it is conceivable to further increase the rotation speed of the multi-layer disk fan 3 for warm air circulation during the cooling operation, compared with during the high speed drying operation immediately before. However, if the number of rotations of the warm-air circulating multi-layer disk fan 3 is further increased as compared with that during the high-speed drying operation, noise is increased and the user feels uncomfortable. During the cooling operation, by operating the rotation speed of the warm-air circulating multilayer disk fan 3 at the same rotation speed as the rotation speed during the immediately preceding high-speed drying operation, an increase in noise is prevented, and the user feels uncomfortable. It is possible to reduce the temperature around the heater without applying heat.

Even when the user turns on the standard drying switch 42 to perform the standard drying operation of the bathroom heating clothes dryer A, and then turns off the standard drying switch 42, the cooling operation similar to the above is performed. However, during the cooling operation, the warm air circulation multilayer disc fan 3 continues to rotate at the same low speed as during the immediately preceding standard drying operation.

After the user turns on the high speed drying switch 41 or the standard drying switch 42 to perform the high speed drying operation or the standard operation of the bathroom heating clothes dryer A, the high speed drying switch 41 or the standard drying switch 42 is turned off. When the temperature detected by the temperature sensor 8 does not drop to a predetermined value T (for example, 40 ° C.), and the count of the timer circuit 31c is a predetermined value S.
When the high-speed drying switch 41 or the standard drying switch 42 is turned on again at a time (for example, 30 seconds) has not been reached, the bathroom heating clothes dryer A is operated by the operation of the drying control circuit 31a as shown in FIG. The high speed drying operation state or the standard drying operation state is restored (for simplicity, only the case of high speed drying operation → cooling operation → high speed operation is shown in FIG. 7). The operation of the temperature sensor 8 is stopped. Timer circuit 3
The count of 1c is continued. However, as long as the high speed drying switch 41 or the standard drying switch 42 remains in the ON state, the count of the timer circuit 31c is a predetermined value S (for example, 3).
Even when it reaches 0 seconds), the hot-air circulation multilayer disc fan 3 continues to rotate at high speed or low speed. After the count reaches the predetermined value S, the count value is reset to 0, and the timer circuit 3
The operation of 1c is stopped.

After the user turns on the high speed drying switch 41 or the standard drying switch 42 to perform the high speed drying operation or the standard operation of the bathroom heating clothes dryer A, the high speed drying switch 41 or the standard drying switch 42 is turned off, and then, When the temperature detected by the temperature sensor 8 does not decrease to a predetermined value T (for example, 40 ° C.) and the count of the timer circuit 31c does not reach the predetermined value S (for example, 30 seconds), the high speed drying switch 41 or the standard drying is performed again. Turn on the switch 42, and
The count of the timer circuit 31c which is being continued is the predetermined value S
When the high-speed drying switch 41 or the standard drying switch 42 is turned off at the time (for example, 30 seconds) is not reached,
By the operation of the drying control circuit 31a, as shown in FIG.
The bathroom heating clothes dryer A shifts from the high speed drying operation state or the standard drying operation state to the cooling operation state, then returns to the high speed drying operation state or the standard drying operation state, and further shifts to the cooling operation state (Fig. 8 shows only the case of high speed drying operation → cooling operation → high speed operation → cooling operation for simplification). In the second cooling operation, when the count of the timer circuit 31c continued from the start of the first cooling operation reaches a predetermined value S (for example, 30 seconds) or by the start of the second cooling operation. When the temperature detected by the temperature sensor 8 that has started to operate decreases to a predetermined value T (for example, 40 ° C.), the operation of the hot-air circulating multilayer disk fan 3 that is rotating at high speed or at low speed is stopped. Since the duration of the high speed drying operation or the standard drying operation sandwiched between the first cooling operation and the second cooling operation is short, the temperature rise around the first heater 7a and the second heater 7b is small. Therefore, in the second cooling operation, at the time when the count of the timer circuit 31c continued from the start of the first cooling operation reaches the predetermined value S (for example, 30 seconds), the high speed rotation or the low speed rotation is performed. Even if the operation of the warm-air circulating multilayer disc fan 3 is stopped, that is, even if the continuous operating time of the warm-air circulating multilayer disc fan 3 in the second cooling operation is short, the first heater 7a and the second heater 7a The temperature around the heater 7b can be reduced to a desired value. First cooling operation and 2
The above control may be performed when the drying operation sandwiched between the second cooling operations is the blast drying operation.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. In the above-described embodiment, during the cooling operation, the hot-air circulation multilayer disk fan 3 continued to operate at the same rotation speed as the rotation speed in the immediately preceding drying operation, but during the cooling operation, the hot-air circulation multilayer disk fan 3 continued. The fan 3 may continue to operate at the lowest speed that can be set. By continuing the operation at the lowest speed that can be set, the temperature around the heater can be reduced without impairing the quietness of the living environment. After the operation of the heater 7a, 7b or the heater 7a is stopped and before the count of the timer circuit 31c reaches a predetermined value S, the operation of the heater 7a, 7b or the heater 7a is restarted and the restarted heater 7a, 7b or the heater 7a is restarted. Is stopped again before the count of the timer circuit 31c reaches the predetermined value S, the timer circuit 31c
When the count of c reaches a count value that is the predetermined value S plus the time from the restart of the operation of the heaters 7a, 7b or the heater 7a to the stop thereof, the multilayer disc fan 3 for circulating hot air is cooled. The operation may be stopped. In this case, the temperature around the heaters 7a, 7b or the heater surrounding the heater 7a, which is increased by restarting the operation of the heater 7a, can be reliably reduced to a desired value. In the above embodiment, the multi-layer disk fan is used as the warm air circulation fan and the exhaust fan,
Other types of fans such as multi-blade radial fans, sirocco fans, turbo fans, etc. may be used.

[0020]

As described above, in the bathroom heating clothes dryer according to the present invention, the hot air circulating fan continues to operate even after the heater has stopped operating, and the residual heat of the heater is removed. Therefore, after the drying operation in which the heater is operated is completed, there is no possibility that the equipment around the heater becomes high temperature due to the residual heat of the heater. The operation of the hot air circulation fan is stopped when a predetermined condition is satisfied, so that the operation of the hot air circulation fan continues for a long time after the operation of the heater is stopped,
There is no danger of wasting power. The condition for stopping the operation of the hot air circulation fan may be a decrease in the temperature around the heater to a predetermined value or lower, or a lapse of a predetermined time from the stop of the heater operation. . If the heater operation is restarted before a predetermined time has elapsed after the heater operation was stopped, and if the restarted heater operation is stopped again before the predetermined time has elapsed, the heater is restarted. The heating time is short and the temperature rise around the heater is small. Therefore, even if the operation of the hot air circulation fan is stopped at the time when a predetermined time based on the stop of the heater operation before the heater operation is restarted, the temperature around the heater can be reduced to a desired value. When the operation of the heater is restarted before a predetermined time elapses after the operation of the heater is stopped, and the restarted operation of the heater is stopped again before the predetermined time elapses, the operation of the heater is restarted. Raised by restarting the heater operation by continuing the operation of the circulation fan until the time obtained by adding the time from when the heater operation is restarted to when it is stopped again to the predetermined time based on the heater operation stop The temperature around the heater can be reliably reduced to a desired value. After the operation of the heater is stopped, if the rotation speed of the hot air circulation fan is increased in order to accelerate the decrease in the temperature around the heater, the noise increases and the user feels uncomfortable. After the operation of the heater is stopped, the operation of the hot air circulation fan is continued at the same rotation speed as the rotation speed of the hot air circulation fan during the operation of the heater immediately before, thereby preventing an increase in noise, It is possible to reduce the temperature around the heater without making the user feel uncomfortable. After the heater operation is stopped, the warm air circulation fan continues to operate at the lowest speed that can be set, and the temperature around the heater is reduced without impairing the quietness of the living environment. You can

[Brief description of drawings]

FIG. 1 is a plan sectional view of a bathroom heating clothes dryer according to an embodiment of the present invention.

FIG. 2 is a structural diagram of an impeller of a multi-layer disk fan for circulating warm air provided in a bathroom heating clothes dryer according to an embodiment of the present invention. (A) is an elevation sectional view, (b) is a top view of a fan blade. .

FIG. 3 is a configuration diagram of a control device included in the bathroom heating clothes dryer according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a state where the bathroom heating clothes dryer according to the embodiment of the present invention is attached to the unit bath.

FIG. 5 is a diagram showing an operating state of each device during operation of the bathroom heating clothes dryer according to the embodiment of the present invention.

FIG. 6 is a time chart showing an operating condition of the bathroom heating clothes dryer according to the embodiment of the present invention.

FIG. 7 is a time chart showing an operating condition of the bathroom heating clothes dryer according to the embodiment of the present invention.

FIG. 8 is a time chart showing an operating state of the bathroom heating clothes dryer according to the embodiment of the present invention.

[Explanation of symbols]

A Bathroom heating clothes dryer 1 Casing 1a Circulation section 1b Exhaust section 2 Inner wall 3 Warm air circulation multi-layer disk fan 3a Impeller 3a ₁ Fan blade 3a ₂ Blades 4 Guide plate 5 Circulation intake port 6 Air outlet 7a 1st Heater 7b Second heater 8 Temperature sensor 9 Edge plate 10 Rotating shaft 11 Motor 12a, 12b, 12c Swash plate 13 Exhaust multilayer disc fan 14 Exhaust inlet port 15 Exhaust port 20 Wind direction changing device 30 Control device 40 Operation panel 200 Unit bath 201 Pole for clothesline 300 Exhaust duct 400 Clothing

Claims (7)

[Claims] 1. A casing for accommodating a warm air circulation fan, a heater, a warm air circulation fan and a heater, and a warm air blowout port and a circulation intake port formed therein, and for warm air circulation during operation of the heater. A control means for operating the fan, continuing the operation of the hot air circulation fan even after the heater is stopped, and stopping the operation of the warm air circulation fan when a predetermined condition is satisfied. Bathroom heating clothes dryer to do. 2. The bathroom heating clothes dryer according to claim 1, wherein the control means stops the operation of the hot air circulation fan when the temperature around the heater falls below a predetermined value. 3. The bathroom heating clothes dryer according to claim 1, wherein the control means stops the operation of the warm air circulation fan when a predetermined time elapses after the operation of the heater is stopped. 4. The control means restarts the operation of the heater before a predetermined time elapses after the operation of the heater is stopped, and the restarted operation of the heater is stopped again before the predetermined time elapses. In this case, the bathroom heating clothes dryer according to claim 3, wherein the operation of the hot air circulation fan is stopped when the predetermined time has elapsed. 5. The control means restarts the operation of the heater before a predetermined time elapses after the operation of the heater is stopped, and the restarted operation of the heater is stopped again before the predetermined time elapses. In this case, the operation of the warm air circulation fan is stopped at a point of time when a time obtained by adding the time from the restart of the heater operation to the stop thereof again is added to the predetermined time. Bathroom heating clothes dryer described in. 6. The control means, after the operation of the heater is stopped, continues the operation of the hot air circulation fan at the same rotational speed as the rotational speed of the hot air circulation fan during the operation of the heater immediately before. The bathroom heating clothes dryer according to any one of claims 1 to 5. 7. The control means continues the operation of the hot air circulation fan at the lowest settable rotation speed after the operation of the heater is stopped. The bathroom heating clothes dryer according to item 1.