JPH06154483A - Bedclothes drying machine - Google Patents

Abstract

PURPOSE:To ensure the safety by stopping the drying function when a failure has occurred such as any person existing on the floor, clogging of a filter, or a blower suction hole being blocked with comforter, etc. CONSTITUTION:A bedclothes drying machine is composed of a body 1, a blower part 3 to send wind to the body, a heating part 4 to warm the wind, a revolving speed sensing part 8 to sense the fan speed of the blower part 3, a control part 9 to make control of the apparatus, and a drying setting part 5 which sets the drying conditions, whereby the drying function is stopped when a decrease in the load of the blower part 3 causes the fan speed to exceed the set level for a specified period of time. This enhances the block sensing accuracy for the blower part, ensures sensing of any person existing on the floor, and enhances the safety.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bedding dryer.

[0002]

2. Description of the Related Art Recently, as hygiene knowledge has been improved, there has been an increasing interest in keeping bedding clean. Bedding dryers are becoming popular as one of the means. A conventional bedding dryer will be described below with reference to the drawings.

FIG. 6 shows a cross-sectional structure of the bedding dryer seen from the direction A in FIG. 5 when the bedding dryer shown in FIG. 5 is used on an actual bed. In the figure, 1 is a bag-shaped main body having an air blowing passage therein, 1a is a hole for blowing hot air, 2 is an air blowing passage, 3 is a blowing portion for taking in air from the outside and sending it to the main body, and heating portion 4 The air taken in from the outside is warmed and turned into warm air on the way to the main body. Reference numeral 5 is a dry setting unit, 6 is a controller, 7a is a mattress or bed pad, and 7b is a mattress. The arrows indicate the flow of air.

Next, the operation of the conventional bedding dryer constructed of the above members will be described. The user supplies the bedding 7a,
When drying 7b, the drying setting unit 5 sets the drying conditions. The blower unit 3 and the heating unit 4 send warm air to the main body 1 with the amount of heat and the amount of air according to the specified drying conditions, and the futon 7
a, the mattress 7b and the comforter (not shown) on the mattress are dried. After a lapse of a predetermined time from the start of drying, the power supply to the blower unit 3 and the heating unit 4 is stopped, and the drying of the bedding is completed.

Further, Japanese Patent Laid-Open Publication No. 4-241813 discloses an electric bedding which can dry the entire bedding in a short time by omitting the work of laying a ventilation mat at the time of drying.

[0006]

However, in the conventional structure as described above, the drying condition differs depending on the bedding,
Generally, bedding made of cotton products should be dried at about 60 ° C (hereinafter
It is said that high-temperature drying) is good, and drying of bedding made of wool or feathers at about 45 ° C. (hereinafter referred to as low-temperature drying) is said to be possible without losing the material and texture of the bedding. Therefore, the product specifications are such that hot air of about 60 ° C. is blown out from the main body 1 during high temperature drying, and when the product is in a dry state while sleeping or when the user sleeps in a bedding set to a dry state. However, if the futon is hot, or if you fall asleep, you will get low-temperature burns.

When the bedding is dried for a long period of time, the suction port filter normally provided in the blower unit 3 is
Cotton dust generated from the beddings 7a and 7b and dust in the air cause clogging and block the suction port of the blower unit 3. When the degree of clogging of the filter increases, the blower unit 3 and the suction port are blocked, and the amount of blown air decreases. However, since the heating unit 4 is energized with a regular energization amount regardless of whether the blower unit is closed, the temperature of the warm air to the main body 1 becomes higher than the temperature at the normal time, and the bedding is damaged by the hot air. There was a problem that it would end up.

Even when the main body is covered with a futon, there is a problem that the blowing temperature similarly rises.

The present invention solves such a problem, and is a bedclothes which prevents accidentally entering the bedclothes in a high temperature dry state and prevents the hot air from blowing out due to the filter being clogged during use. It is intended to provide a dryer.

[0010]

In order to achieve this object, a main body provided with an air blow passage inside a bedding, an air blower for blowing air to the air blow passage, and a rotation speed of the air blower are detected. The rotation speed detection unit, the heating unit installed on the blower opening side of the blower unit, the drying setting unit that sets the drying condition of the bedding, and the rotation speed control of the blower unit according to the drying condition of the drying setting unit. The heating unit is equipped with a control unit that controls the energization amount.The control unit sets the failure rotation speed and the determination time corresponding to the drive rotation speed of the blower unit according to the drying condition of the drying setting unit, and the rotation speed of the blower unit. If the number of revolutions is equal to or higher than the failure rotation speed for the determination time, the energization of the heating unit and the blower unit is stopped.

[0011] Further, a main body having an air passage formed inside the bedding, an air blowing portion for sending air to the air passage, a rotation speed detecting portion for detecting a rotation speed of the air blowing portion, and air blowing for the air blowing portion. The heating unit installed on the mouth side, the notification unit that notifies the user by sound or light, the drying setting unit that sets the drying condition of the bedding, and the rotation speed of the blower unit according to the drying condition of the drying setting unit. The control unit includes a control unit that controls the amount of electricity supplied to the heating unit, and the control unit sets the failure rotation speed and the determination time corresponding to the drive rotation speed of the blower unit according to the drying condition of the drying setting unit, and sets the blower unit When the number of rotations continues to be equal to or higher than the failure number of rotations for the determination time, it is possible to stop the energization of the heating unit and the blower unit and activate the alarm unit.

[0012]

According to the above construction, when a large body such as a human body rides on the main body, the blower path inside the main body is blocked, so that the load on the blower unit is reduced and the rotation speed of the blower increases. The control unit detects this change in the number of revolutions, and stops the energization of the blower unit and the drying unit to stop the drying, and stops the blowing of warm air when a person sits on the futon or when the person is in the bed. If the suction blockages due to clogging of the blower section, the load on the blower section will be lightened, the drying will be stopped by detecting that the number of revolutions of the blower has risen, and the main unit will be clogged with a filter or a futon. It is configured to stop the drying when the blower section input is blocked when the cover is covered to maintain safety.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 shows the structure of a bedding dryer according to Embodiment 1 of the present invention. In the figure, 1 is a main body that blows warm air and dries the bedding, and a blower path is formed inside. 3 is a blower section that takes in air and blows air to the main body 1, and 4 is between the main body 1 and the blower section 3. A heating unit arranged to warm the air sent to the main body 1 to make it warm, 5 is a drying setting unit for setting the drying condition of the bedding, 8 is a rotation speed detecting unit for detecting the rotation speed of the blower unit 3, and 9 is drying. The control unit controls the energization amount of the heating unit 4 and the rotation speed of the blower unit 3 according to the setting in the setting unit 5.

Next, the operation of the bedding dryer of this embodiment constituted by the above members will be described. When the bedding is dried, the user sets the drying temperature condition (for example, high temperature for cotton and low temperature for wool / feather) by the drying setting unit 5 according to the type of bedding. The control unit 9 calculates the number of revolutions of the blower unit 3, the energization amount of the heating unit 4 and the drying time from the setting conditions of the drying setting unit 5, and dries the bedding with the heating amount and the air amount according to the drying conditions. is there. The flow of wind to the bedding is shown by the wavy line A in FIG. The blower unit 3 sends the air sucked from the outside to the main body 1. The air is warmed by the heating unit 4 to become warm air in the middle of blowing air to the main body 1 and is sent to the main body 1 to dry the bedding with the warm air. At the time of drying, the control unit 9 controls the blower unit 3 at a rotation number according to the drying condition set by the drying setting unit 5, and also has a failure rotation number corresponding to the rotation number for controlling the blower unit 3 and a false detection. Set the judgment time to prevent this.

In this embodiment, the motor used in the blower unit 3 will be described as a DC motor. FIG. 3 shows the relationship between the rotation speed and the torque of the DC motor used in this embodiment. As shown in the figure, when the current supply to the motor is a constant voltage, the rotation speed increases when the load of the motor becomes light, and the rotation speed decreases when the load becomes heavy. Therefore, when something other than a futon that covers the air passage of the main body 1 is placed on the main body 1, the air passage is closed, so that the load on the motor of the blower unit 3 is reduced and the rotation speed is increased. . Further, when the suction side of the blower unit 3 is covered with a futon or when the filter provided on the suction side is clogged, the load on the motor of the blower unit 3 is reduced and the rotation speed is increased. When the rotation number of the motor of the blower unit 3 exceeds the failure rotation number for a predetermined determination time or longer, the control unit 9 closes the blower unit 3 (whether a person is riding on the main body,
When it is determined that the filter has been clogged), the power supply to the blower unit 3 and the heating unit 4 is stopped, and the drying is stopped.

(Embodiment 2) Next, a bedding dryer according to Embodiment 2 of the present invention will be described with reference to FIG.

FIG. 2 shows the structure of the bedding dryer according to the second embodiment. The same components as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 2, reference numeral 10 is an annunciation unit, which is an output of the control unit 5 and is an alarm means such as light or sound.
Warn the user. At this time, the controller 9 controls the blower 3
Assuming that the air has been blocked, the blower unit 3 and the heating unit 4 are de-energized and the drying is stopped. At the same time, activate the notification unit 10,
The user is warned by the sound of the buzzer or the light of the LED.

FIG. 4 shows the operation of the control unit 9 in the bedding dryers of the first and second embodiments until the drying is stopped when an abnormality occurs. The description of the emergency control other than stopping the drying due to the blockage of the blower unit 3 will be omitted.

As shown in FIG. 4, when the drying condition is set in S1, the rotation speed of the blower unit 3 and the energization amount (heat amount) of the heating unit 4 are set in S2 in accordance with the setting condition of the drying setting unit 5. The failure rotation speed and the determination time for preventing erroneous determination are set, and in S3, the heating unit 4 and the air blowing unit 3 are operated, and the process proceeds to the drying mode process of S4.

When there is no person on the main body 1 or when there is no abnormality such as clogging of the filter and the suction of the blower unit 3 is not blocked, a predetermined load is applied to the blower unit 3 so that control is performed. The unit blows air on the main body 1 at the rotation speed of the fan to be controlled, and loops S5 and S4.

When there is a person on the main body 1, when the futon covers the main body, or when the suction of the blower unit 3 is blocked due to the clogging of the filter, the load on the blower unit 3 is lightened. Therefore, the rotation speed of the fan increases. Then, when the time that exceeds the failure rotation speed set in S2 exceeds the determination time, the control unit 9 stops the heating unit 4 and the air blowing unit 3 in S7 and stops the drying.

In S6, in order to prevent so-called erroneous detection such as a person walking on the main body 1 for a short time during drying and stopping the drying due to force majeure, it is not judged as a failure unless the rotation speed of the failure continues for a predetermined time. It is configured.

In the bedding dryer of the second embodiment, the alarm section is activated in S8 to warn the user that the blower section 3 is closed.

[0025]

As is apparent from the above description, according to the present invention, the presence / absence of a human body is detected and the suction of a blower is blocked by utilizing the change characteristic of the rotation speed with respect to the load of the motor used in the blower section. To judge. This detection method can be constructed at a much lower cost than the detection method using a sensor that detects a human body.

Further, since the setting of the failure rotation speed can be set according to the drying condition, the detection relating to the detection of the human body or the determination of the blockage of the suction of the blower can be performed as compared with the method of determining only the failure rotation speed by one. High accuracy. Therefore, it is possible to reliably detect clogging of the filter and blockage of the suction port of the blower unit due to the futon or the like without being affected by the drying setting condition. Therefore, even when using relatively high-priced bedding such as woolen and feather quilts that require low-temperature drying, it is possible to dry with peace of mind without damaging the material or texture of the bedding.

Even when an infant with a small body and weak resistance is on the floor, the air passage provided in the main body is closed, so that the load on the motor of the blower is reduced and the rotation speed of the motor is reduced. Due to the change, it can be used safely and with peace of mind without affecting the health of infants.

Further, when the abnormality is detected and the drying is stopped, the alarm unit can give a warning to the user, so that the abnormality can be dealt with quickly.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a bedding dryer according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a bedding dryer according to the second embodiment.

FIG. 3 is a diagram showing a relationship between a load and a rotation speed of the blower motor.

FIG. 4 is a flowchart showing the operation of the control unit.

FIG. 5 is a perspective view showing a configuration of a conventional bedding dryer.

FIG. 6 is a cross-sectional view showing a configuration when the same bedding dryer is used.

[Explanation of symbols]

 1 Main body 3 Blower part 4 Heating part 5 Drying setting part 8 Rotation speed detection part 9 Control part 10 Notification part

Claims (2)

[Claims] 1. A main body having an air blow passage formed therein and arranged below a bedding, a blower blowing air to the blow blow passage, a rotation speed detector detecting the fan rotation speed of the blower, and A heating unit installed on the blower opening side of the blower unit, a drying setting unit for setting the drying condition of the bedding, and a rotation speed control of the blowing unit and energization of the heating unit according to the drying condition of the drying setting unit. And a control unit for performing an amount control, wherein the control unit sets a failure rotation speed and a determination time corresponding to the drive rotation speed of the blower unit according to the drying condition of the drying setting unit, A bedding dryer that stops the energization of the heating unit and the blowing of the blowing unit when the number of rotations continues to be equal to or higher than the malfunctioning rotation speed for the determination time. 2. A notification unit for notifying a user by means of notification such as sound or light is provided, and when the rotation speed of the blower unit is equal to or higher than the failure rotation speed for a determination time, the heating unit is energized and the blower unit is provided. The bedding dryer according to claim 1, wherein the ventilation of the air is stopped, and the alarm is activated to notify the abnormality.