JPH06343796A - Dryer for clothes - Google Patents

Abstract

PURPOSE:To provide a dryer for clothes which automatically stops a hot air generator by accurately detecting the termination of drying of the clothes when they are dried in a drying room such as a bathroom. CONSTITUTION:When the rate of change in radiant heat from clothes 2 detected by a radiation detecting means 9 placed near a blowhole 8 becomes nearly 0, a hot air generator 6 is stopped to prevent an overuse of electric power after drying the clothes 2, so that an energy-saving driving of a control portion 10 can be realized. Also, when the radiant heat from clothes detected by the radiation detecting means 9 placed near the blowhole 8 becomes nearly the temperature in the drying room, the control portion 10 decides the time left for driving, and after the lapse of time, automatically stops the hot air generator 6, so that the clothes can desirably be dried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple clothes dryer for drying clothes hung in a room such as a bathroom with hot air.

[0002]

2. Description of the Related Art In recent years, clothes dryers using bathrooms have been widely used.

Conventionally, this type of clothes dryer has generally been constructed as shown in FIG. As shown in the figure, a room such as a bathroom is defined as a drying room 101, clothes 102 are hung in the drying room 101, hot air generated inside the clothes dryer main body 103 is sent to the clothes 102, and humidity in the drying room 101 is increased. By lowering, the water content contained in the clothes 102 is evaporated. The operation time is often set by a timer, and a temperature sensor that detects the temperature and humidity inside the room and a humidity sensor that automatically stops the operation are also used.

[0004]

In setting the operating time of such a conventional clothes dryer, in the case of the timer operation, the user must set the drying time based on past experience. Further, in the case of the temperature sensor or the humidity sensor, a bathroom equipped with a ventilation fan or the like is used as the drying chamber 101, so that the thermal environment is not constant. Therefore, due to various factors as described above, there is a problem that it is difficult to accurately stop the operation when the clothes 102 are dried.

The present invention is to solve the above-mentioned problems, and by detecting the dry state of clothes in a drying room such as a bathroom and automatically stopping it, wasteful use of electric power after drying can be prevented and energy-saving operation can be performed. A first object is to provide a dryer.

A second object is to provide a clothes dryer which can determine the drying operation time more accurately.

[0007]

A first means for achieving the first object of the present invention is to provide a drying chamber in which clothes are suspended and which can flow into the outside air, and a main body attached near the drying chamber. ,
A warm air generating device including a heat generating means and a blowing means installed in the main body, a radiant heat detecting means for detecting radiant heat from the clothes, and a control part for controlling the operation of the warm air generating device. When the rate of change of the radiant heat detected by the radiant heat detecting means becomes close to 0, the warm air generator is stopped.

A second means for achieving the second object is a drying chamber in which clothes are suspended and which can flow into the outside air, a main body attached in the vicinity of the drying chamber, and heat generated inside the main body. Means and a blowing means, a radiant heat detecting means for detecting radiant heat from the clothes, a temperature detecting means for detecting the temperature in the drying chamber, and a control section for controlling the operation of the warm air generating means. This control unit has a configuration in which, when the radiant heat temperature detected by the radiant heat detecting means becomes close to the temperature in the drying chamber detected by the temperature detecting means, the remaining operating time is determined according to the level of this temperature. It was done.

[0009]

According to the present invention, the radiant heat from the clothes is detected by the radiant heat detecting means by the structure of the above-mentioned first means, and when the rate of change is close to 0, it is judged that the clothes are almost dry. The hot air generator can be stopped.

According to the structure of the second means, the radiant heat temperature from the clothes is detected by the radiant heat detecting means, and when the value becomes close to the temperature in the drying chamber detected by the temperature detecting means, the temperature By determining the remaining operation time depending on the height, clothes can be dried in an appropriate drying time.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG. As shown in the figure, clothes 2 are suspended in a drying room 1 such as a bathroom where the outside air can flow. A dryer main body 3 attached near the drying chamber 1 has a built-in hot air generator 6 including a heating means 4 and a blowing means 5. Further, the main body 3 has a suction port 7 opened outside the drying chamber 1 and a blowing port 8 opened inside the drying chamber 1.
Radiant heat detecting means 9 for detecting the radiant heat from the clothes 2 is provided above the outlet 8. The main body 3 has a control unit 10 that controls the operation of the warm air generator 6. An exhaust device 13 is provided in the drying chamber 1.

In the above structure, the air blowing means 5 is operated by operating the control section 10, and the air flow sucked from the suction port 7 of the dryer main body 3 is heated by the heat generating means 4 and becomes hot air. Air is blown into the drying chamber 1 from the outlet 8 to dry the clothes 2.

In this drying process, the radiant heat detecting means 9
The rate of change of the radiant heat from the clothes 2 detected by can be expressed by the following equation. The radiant heat of the rate of change _{= (T n -T n-1} ) / (t n -t n-1) T n ...... t radiant heat in _n when the temperature T _n-1 ... radiant heat temperature where the control unit at time t _n-1 When the radiant heat temperature at the time of T _n is measured, the previous value of T _n−1 , which is the previous value, is stored in advance, and the change rate of the radiant heat is obtained by the both values.

As shown in FIG. 3, after the start of drying, the radiant heat from the clothes gradually increases and the rate of change gradually increases, but the rate of change gradually decreases as the drying progresses. When the rate of change approaches 0, the clothes 2 are considered to be almost dry, and the warm air generator 6 is stopped. That is, if there is almost no change in the radiant heat from the clothes 2, it is assumed that the clothes 2 have been dried. Even if some moisture remains in the clothes 2, the clothes 2 can be naturally dried by the warm atmosphere in the drying chamber immediately after the operation is stopped. This drying process is shown in the flowchart of FIG. 4 as the operation of the control unit 10.

As described above, according to the clothes dryer of the first embodiment of the present invention, it is determined from the rate of change of the radiant heat from the clothes 2 detected by the radiant heat detecting means 9 that the clothes 2 are almost completely dried. , The operation can be stopped automatically.

Next, a second embodiment of the present invention will be described with reference to FIG.
The description will be made with reference to FIGS. The first
The same components as those in the embodiment are designated by the same reference numerals and detailed description thereof will be omitted. As shown in FIG. 5, temperature detecting means 12 is provided near the outlet.

In the above structure, the radiant heat temperature from the clothes 2 detected by the radiant heat detecting means 9 and the temperature detecting means 1
Comparing with the temperature in the drying chamber 1 detected by 2
As shown in FIG. 6, since the radiant heat from the clothes 2 is large immediately after the start of drying (in this case, the radiant heat is cold and radiant heat), it is considerably lower than the room temperature of the drying chamber, but the radiant heat from the clothes 2 gradually increases as the drying progresses. When the temperature becomes smaller and approaches the room temperature of the drying chamber 1, and the drying is completed, the temperature of radiation heat from the clothes 2 becomes equal to the temperature of the drying chamber 1. Since the control unit 10 constantly monitors the radiant heat temperature from the clothes 2 obtained by the radiant heat detecting means 9 and the temperature in the drying chamber 1 obtained by the temperature detecting means, the radiant heat temperature is close to the temperature of the drying chamber 1. When the remaining operating time is over, the remaining operating time is determined, and the warm air generator is stopped when the remaining operating time ends. This process is shown in Figure 7.
It is shown in the flowchart.

The length of the remaining operation time is determined by the temperature inside the drying chamber 1. For example, in summer, dry room 1
Since the temperature inside is high, the remaining operating time is set short, and in winter the temperature inside the drying chamber 1 is low, so it is difficult to dry, so it is set long.

As described above, according to the clothes dryer of the second embodiment of the present invention, the radiant heat temperature from the clothes 2 detected by the radiant heat detecting means 9 is the temperature in the drying chamber 1 detected by the temperature detecting means 12. By setting the remaining operation time according to the temperature in the drying chamber 1 when the temperature is near, it is possible to realize an accurate drying operation.

[0020]

As is apparent from the above embodiments, according to the present invention, the radiant heat from clothes such as laundry is detected instead of monitoring the dry condition by the temperature or humidity in the drying chamber. By determining that the clothes are in a dry state when the rate of change is substantially stable, it is possible to provide a clothes dryer having an effect of preventing wasteful use of electric power after drying the clothes and performing energy saving operation.

Further, when the radiant heat temperature from the clothes becomes close to the temperature inside the drying chamber, the length of the remaining operation time is set corresponding to the temperature inside the drying chamber to dry the clothes accurately. It is possible to provide a clothes dryer having an effective effect.

[Brief description of drawings]

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

FIG. 2 is a perspective view of the same installation state of the first and second embodiments.

FIG. 3A is a characteristic diagram of radiant heat temperature of the same clothing of the first embodiment, and FIG. 3B is a characteristic diagram of same radiant heat change rate.

FIG. 4 is the same flowchart of the first embodiment.

FIG. 5 is a sectional view of the same second embodiment.

FIG. 6 is a characteristic diagram of radiant heat temperature of the clothes and drying room temperature.

[FIG. 7] Same flowchart

FIG. 8 is a perspective view of a conventional clothes dryer being installed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drying room 2 Clothes 3 Main body 4 Heat generating means 5 Blower means 6 Hot air generator 9 Radiant heat detecting means 10 Control section 12 Temperature detecting means

Claims (2)

[Claims] 1. A drying chamber in which clothes are suspended and can flow into the outside air, a main body attached in the vicinity of the drying chamber, a warm air generator including a heating means and a blowing means installed in the main body, and from the clothes. Radiant heat detecting means for detecting the radiant heat of, and a control unit for controlling the operation of the warm air generator,
The control section is a clothes dryer in which the warm air generator is stopped when the rate of change of the radiant heat detected by the radiant heat detecting means becomes close to zero. 2. A drying chamber in which clothes are suspended and which can flow into the outside air, a main body attached in the vicinity of the drying chamber, a warm air generator including a heating means and a blowing means installed in the main body, and Radiant heat detecting means for detecting the radiant heat of the, the temperature detecting means for detecting the temperature in the drying chamber, and a control unit for controlling the operation of the hot air generator, the control unit has radiant heat detected by the radiant heat detecting means. When the temperature becomes close to the temperature inside the drying chamber detected by the temperature detecting means, the remaining drying time is determined according to the level of this temperature.