JPH0423558B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a futon dryer, and more specifically, to a futon dryer that can also be used as a warm air heater.

[Conventional example]

The hot air generator built into the futon dryer can be said to be effective for hot air heating due to its heat calories. Therefore, the present applicant filed an application for a futon dryer which can also be used as a hot air heater in the earlier Japanese Patent Application No. 62-63200. To briefly explain its structure,
The air guide duct connected to the hot air generator is branched into two at a predetermined location, and one of the branch ducts is connected to a first duct for drying futons to which a breathable bag-shaped mat is connected.
The hot air blowing duct is used as a hot air blowing duct, and the other branch duct is used as a second hot air blowing duct for a hot air heater, and the hot air supplied from the hot air generating device is sent to the branching part of the air guide duct as the first hot air blowing duct. and a hot air switching means for selectively switching to either one of the second hot air blowing duct. Therefore, according to this, by switching the hot air switching means, it can be used both as a futon dryer and a hot air heater.

[Problem that the invention seeks to solve]

However, since the discharge air volume characteristics are different between a futon dryer and a warm air heater, the following problems arise. That is, in the case of a warm air heater, since the discharge resistance is small, the temperature of the hot air must be increased by increasing the amount of heat generated by the heater or by decreasing the amount of air blown, or it will give a chilly feeling. On the other hand, in the case of a futon dryer, since a bag-shaped mat is attached, the discharge resistance becomes very large. Therefore, unless the amount of heat generated by the heater is reduced or the amount of air blown is increased, the surface temperature of the bag-shaped mat will become high and the futon will become discolored.

To solve this problem, it is possible to adjust the amount of heat generated by the heater and the amount of air blown in conjunction with the switching operation of the hot air switching means, but this requires a changeover switch and its control circuit. Therefore, there are other drawbacks such as high cost and difficulty in ensuring safety.

This invention was made in view of these circumstances, and its purpose is to satisfy the different temperature and air volume characteristics required for futon drying and hot air heating by simply adding a relatively simple mechanical structure. To provide a futon dryer which can also be used as a warm air heater.

[Means for solving problems]

In order to achieve the above object, in this invention, an air guide duct connected to a hot air generator including a heater and a blower fan is branched into two at a predetermined part, and one of the branch ducts is shaped like a breathable bag. The mat is connected to the first hot air blowing duct for drying the futon, and the other branch duct is used as the second hot air blowing duct for the warm air heater, and the hot air is generated at the branch of the air guide duct. In the futon dryer that also serves as a hot air heater, the futon dryer is provided with a hot air switching means for selectively switching the hot air supplied from the device to either one of the first and second hot air blowing ducts. a cold air supply means for supplying cold air to the first hot air blowing duct when the second hot air blowing duct is closed by the means, one end of the cold air supply means being connected to the blowing fan side, the other It consists of a cold air supply duct whose end is connected to the branch part of the air guide duct avoiding the heater, and the other end of the cold air supply duct is connected to the second warm air blowing duct side by the hot air switching means. The hot air blowing duct is opened together with the first hot air blowing duct when the hot air blowing duct is closed, and is disposed at a portion that is closed together with the first hot air blowing duct when the hot air switching means closes the first hot air blowing duct. There is.

[Effect]

According to the above configuration, when drying the futon when the second warm air blowing duct side is closed by the hot air switching means, cold air is supplied from the cold air supply means to the first hot air blowing duct, so that the temperature of the hot air changes. As the temperature becomes lower than the temperature of the hot air for heating, the amount of air blown increases.

〔Example〕

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

This futon dryer includes a hot air generator 1 including a heater (for example, a semiconductor heater) 2 and a blower fan 3.
It is equipped with A wind guide duct 4 is connected to the hot air generator 1. The air guiding duct 4 is branched into a futon drying duct 5 and a warm air heating duct 6 at a predetermined location. According to this embodiment, the branch part 8 of the air guide duct 4 is provided with an arcuate wall 8a formed in a substantially semicircular arc shape, and in this case, the futon drying duct 5 extends from the branch part 8 to the housing 7 The hot air heating duct 6 extends from the branch portion 8 toward the side of the housing 7 .

A switching valve 9 having an arc-shaped valve body 9a having approximately the same curvature as the arc wall 8a is rotatably provided within the branch portion 8. This switching valve 9 closes either the futon drying duct 5 or the warm air heating duct 6. That is, when the switching valve 9 is rotated clockwise and the hot air heating duct 6 is closed by the valve body 9a as shown by the solid line in the figure, the hot air from the hot air generator 1 is directed to the open side. is supplied to the futon drying duct 5. On the other hand,
When the switching valve is rotated counterclockwise and the futon drying duct 5 is closed as shown in the imaginary line in the figure, the hot air from the hot air generator 1 is transferred to the hot air duct 6.
is supplied to

According to the present invention, a cold air supply means is provided which supplies cold air to the futon drying duct 5 to lower the temperature of the hot air and to increase the amount of air blown when drying the futon. In this example,
The cold air supply means includes a cold air supply duct 10 having one end 10a connected to the blower fan side and the other end 10b bypassing the heater 2 and connected to the branch 8 of the air guiding duct 4. In this case, the other end 10b of the cold air supply duct 10 connects to the futon drying duct 5 at a predetermined portion of the branching portion 8, that is, the valve body 9a of the switching valve 9.
It is connected to the parts that are opened and closed together.

In the above configuration, when the hot air heating duct 6 side is closed by the switching unit 9, both the futon drying duct 5 and the other end 10b of the cold air supply duct 10 are opened. As a result, the hot air from the hot air generator 1 is supplied toward the futon drying duct 5, and
Cold air that does not pass through the heater 2 is sent to the cold air supply duct 10
It is supplied from the branch part 8 into the futon drying duct 5 via. Therefore, the temperature of the hot air for drying the futon is lowered, and the amount of air blown is increased. This prevents the futon from discoloring and further increases the drying speed.

On the other hand, the switching valve 9 is rotated counterclockwise as shown in the figure, and the valve body 9a is connected to the futon drying duct 5.
When the cold air supply duct 10 is closed, the hot air from the hot air generator 1 is directly transferred to the hot air heating duct 6.
It is blown out from. Therefore, during hot air heating, the temperature of the hot air becomes higher than when drying the futon, but the amount of air blown decreases.

〔effect〕

As explained above, according to the present invention, without electrically controlling the heater or the blower fan, by simply switching the switching valve, different types of hot air are generated depending on whether the futon is being dried or when heating the hot air. Can be switched to temperature and air flow.

[Brief explanation of drawings]

The figure is a sectional view schematically showing the internal structure of the futon dryer according to the present invention. In the figure, 1 is a hot air generator, 2 is a heater, 3 is a blower fan, 4 is a wind guide duct, 5 is a futon drying duct, 6 is a hot air heating duct, 7 is a housing, and 8
9 is a branch part, 9 is a switching valve, and 10 is a cold air supply duct.

Claims (1)

[Claims] 1. An air guide duct connected to a hot air generator including a heater and a blower fan is branched into two at a predetermined portion, and one of the branch ducts is connected to an air permeable bag-shaped mat. A first hot air blowing duct for drying futons is used, and the other branch duct is used as a second hot air blowing duct for a hot air heater, and the hot air is supplied from the hot air generator to the branch part of the air guide duct. In the futon dryer that also serves as a hot air heater, the futon dryer is provided with a warm air switching means for selectively switching hot air to either one of the first and second hot air blowing ducts, A cold air supply means is provided for supplying cold air to the first warm air blowing duct when the second hot air blowing duct side is closed, and one end of the cold air feeding means is connected to the blowing fan side,
a cold air supply duct whose other end is connected to a branch of the air guide duct avoiding the heater, and
The other end of the cold air supply duct is opened together with the first warm air blowing duct when the second warm air blowing duct is closed by the wind switching means, and the other end of the cold air supply duct is opened together with the first hot air blowing duct when the second warm air blowing duct is closed by the wind switching means. A futon dryer characterized in that the futon dryer is arranged at a part that is closed together with the wind blowing duct when it is closed. 2. The branch part of the air guide duct has an arcuate wall with a predetermined curvature, and the hot air switching means includes a switching valve with substantially the same curvature that rotates reciprocatingly along the arcuate wall. The futon dryer described in item 1.