JPH0996448A - Hot air heater, and clothes drying device utilizing the hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the strength of a grille plate in the vicinity of a blow out port, and prevent a finger, etc., from being inserted in the blow out port by a method wherein in a casing with a ventilation port and the blow out port, a heater to heat blown in air, and a blower for the circulation of hot air, are housed, and a mesh-form body is provided at the blow out port. SOLUTION: In a box-shaped casing, a centrifugal type air discharging fan which is driven by a motor, and a circulation fan are housed, and in a circulation passage, a heater is arranged as a heating apparatus to heat air which is blown out from the circulation fan. At a blow out port, an approx. rectangular mesh-form body 25 is attached by a rectangular frame 23 with approx. the same size as the outer peripheral edge of an opening 21, at the blow out opening 21 which is provided at a specified location on a grille plate 2a. The mesh-form body 25 is formed by diagonally crossing a large number of cotton- form members 25a with specified intervals in such a manner that a large number of openings 25h may become an approx. rhombic shape respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a warm air blower that blows warm air heated by a heater to heat a room or dry clothes.

[0002]

2. Description of the Related Art Conventionally, as a warm air blower for indoor heating, drying clothes, etc., a structure in which a circulation fan, a heater such as a heater and the like are housed in a casing having an intake port and a blowout port is well known. is there.

In the above-mentioned warm air blower, in order to prevent an accident such as a child putting his / her hand through the air outlet and getting a burn or the like, the air outlet has the following structure. (1) A metal grill plate that constitutes one surface of the casing is folded back inside or outside of the device at an acute angle, and the opening area of the hot air outlet is formed so that a finger does not enter it. (2) Similarly, a metal grill plate is punched out to a size that does not allow fingers to enter it, and is used as a hot air outlet.

[0004]

SUMMARY OF THE INVENTION In the above structure,
There is no choice but to reduce each opening area of the hot air outlet, and as a result, the total opening area is also small.Therefore, the flow path resistance in the vicinity of the outlet increases, leading to pressure loss and heating / drying efficiency. There was a downside. Especially, improved usability and heating
In the case where the air outlet variable louver is provided at the air outlet for improving the drying efficiency, the variable louver itself becomes an obstacle, and the pressure loss is further increased.

Further, if it is attempted to suppress the pressure loss by enlarging each opening area, there is a problem that the above-mentioned accident may occur and the strength of the grill plate in the vicinity of the air outlet decreases. On the other hand, if an attempt is made to increase the total opening area by increasing the number of openings without changing each opening area, the size of the device will increase, and the ventilation efficiency and the directionality of warm air will decrease, and the function as a warm air blower will deteriorate. Invite.

In view of the above problems, the present invention can maintain the strength of the grill plate in the vicinity of the air outlet, effectively prevent the fingers or the like from being inserted into the air outlet, and heat even if the total opening area is increased. -The purpose is to provide a warm air blower that does not reduce the drying efficiency.

[0007]

In order to solve the above-mentioned conventional problems, the present invention provides a heater for heating sucked air and a blower for circulating warm air in a casing having an inlet and an outlet. It is characterized in that it is housed and a net is provided at the outlet.

In a preferred aspect of the present invention, (1) a large number of warm air blowers defined by the linear members are formed by forming a plurality of linear members diagonally intersecting at a predetermined interval. Each of the projecting openings is formed in a substantially rhombic shape. (2) The mesh body is attached via a frame body having substantially the same size as the outer peripheral edge of the blowout port. (3) A mesh body is also provided at the intake port. (4) A wind direction variable louver is provided at the air outlet.

Further, the present invention is characterized in that the warm air blower described above is installed in a relatively narrow space such as a bathroom to dry clothes and the like.

[0010]

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

1 to 4 show an example in which the warm air blower according to the present invention is used as a clothes dryer. As shown in FIG. 1, in a clothes dryer 1 as a warm air blower, a grill plate 2a of a casing 2 in which an intake port 3 and an outlet port 5 are formed faces a room interior side on a ceiling C of a bathroom B such as a unit bath. Is installed as. The warm air blown out from the outlet 5 circulates in the bathroom B to dry the clothes S hung on the clothes pole P installed on the wall surface W of the bathroom B. Reference numeral R is a remote controller for operation.

A schematic structure of the clothes dryer 1 will be described with reference to FIG. In the box-shaped casing 2 having a substantially rectangular cross section, a centrifugal exhaust fan 11 and a circulation fan 13 both driven by a motor M are surrounded by first and second scroll casings 12 and 14, respectively. It is stored.

The exhaust passage 12a of the first scroll casing 12 is connected via a connecting member 17 to an exhaust duct D arranged above the ceiling C of the bathroom B to communicate with the outside. There is. By exhausting the high-humidity air to the outside from the exhaust flow path 12a, the drying of the clothes S in the bathroom B is promoted. Further, in the circulation passage 14 a of the second scroll casing 14, a heater 15 as a heater for heating the air blown from the circulation fan 13 is arranged. As the heater 15, a ceramic honeycomb heater, a PTC heater or the like which is small in size and excellent in heating efficiency can be preferably used.

A wind direction variable louver device 17 having a plurality of blades 17a rotated by a synchronous motor m in a predetermined cycle is disposed at the end of the circulation passage 14a. By this louver device 17, warm air can be uniformly blown into the bathroom B, and warm air can be uniformly applied to the clothes S hung on the clothes pole P, so that the clothes are dried.

As shown in FIG. 3, the intake port 3 is formed by arranging a large number of fine holes in an array on a grill plate 2a of a casing 2 made of a metal plate. The shape, number, etc. of the pores can be arbitrarily selected, but in consideration of the general intake capacity of the circulation fan 13, a wider range than the intake opening (not shown) of the first scroll casing 12 is provided. It is preferable to form so that the opening area is as large as possible. Further, if the intake port 3 is formed of a large number of small holes instead of the small holes, the strength is improved, and since each hole can have a small diameter, dust and the like can be easily captured, and dust and the like can be trapped inside the device. I'm dying.

In the outlet 5, an outlet 21 is formed at a predetermined position of the grill plate 2a, and a rectangular frame (frame body) 23 having substantially the same size as the outer peripheral edge of the opening 21 is interposed to form a substantially rectangular shape. A shaped mesh 25 is attached. Specifically, the mesh 25 formed in the same size as or slightly smaller than the frame 23 is integrated with the frame 23 by bending the plurality of locking claws 23a provided in the frame 23 inward. Next, these are set in the blowout opening 21 so as to be in contact with a plurality of stopper pieces 21a formed by bending the ends of the blowout opening 21 in the opening direction (inward of the opening), and a plurality of fixing claws of the frame 23 are set. 23b is bent outward (in the direction of unfolding) and locked to the bent end 21b of the blowout opening 21. Finally, the net 25 and the frame 23 and the blowout opening 21 are provided on the back surface (inside of the device) at appropriate positions of the locking portions.
Fix by crimping more.

With such a mounting structure, the flexible mesh 25 can be easily and surely mounted without bending and distortion, and the mounting strength can be sufficiently secured.

The mesh 25 is composed of a large number of linear members 25a.
By obliquely intersecting each other at a predetermined interval, a large number of openings 25h defined by the linear members 25a are formed in a substantially rhombic shape. Of course, the shape of the opening 25h may be a triangle, a regular polygon, or the like, but the area of the opening 25h is made as small as possible so as to prevent fingers from entering while reducing the pressure loss, and for ease of manufacturing, etc. The rhombus is most preferable in consideration.

The present invention is not limited to the above structure, and the following modifications can be considered. (1) By covering the intake port 3 with a mesh, pressure loss is reduced, intake efficiency is improved, and dust can be more effectively prevented from collecting inside the device. In this case, since the intake port 3 has a wide opening range, it is preferable to provide a large number of relatively small mesh bodies in order to minimize the decrease in strength. (2) In the above embodiments, the clothes dryer is installed on the ceiling of the bathroom, but it goes without saying that the present invention can be applied to a warm air heater installed on the floor surface, wall surface, etc. of a living room. In this case, there is an increased risk of a finger being inserted into the air outlet 5 or accidentally colliding a limb or an object with the air outlet 5, and the force of insertion is stronger than when installing on the ceiling. Therefore, the opening area of the grill plate 2a is made as small as possible, the outer peripheral edges of the net 25 and the frame 23 are crimped to improve the attachment strength, and the material of the linear member 25a is made less flexible. It is preferable to improve the strength of the mesh 25 itself by narrowing the interval between the linear members 25a to reduce the area of each opening 25h.

[0020]

According to the present invention, since the net-like member is provided at the outlet of the warm air, there is no fear that a child or the like will insert his / her hand and get burned, and the strength is improved. Further, since the flow path resistance of the linear member is small, it is possible to reduce the pressure loss. Furthermore,
Even if the total opening area is increased, the device does not become large and heating / drying efficiency does not decrease. In particular, when the wind direction variable louver is provided at the air outlet, the pressure loss increases, so that the effect of the present invention is more effectively exhibited.

[Brief description of drawings]

FIG. 1 is a perspective view of a bathroom in which a clothes dryer according to the present invention is installed.

FIG. 2 is a plan view of the same with the upper plate of the casing removed.

FIG. 3 is a bottom view of the same.

FIG. 4 is an exploded perspective view of the air outlet.

5 is a sectional view taken along line VV of FIG.

[Explanation of symbols]

1: clothes dryer (warm air blower) 2: casing 2a: grill plate 3: intake port 5: blowout port 23: frame (frame body) 25: mesh body

Claims (6)

[Claims] 1. A casing having an intake port and an outlet port, a heater for heating the sucked air and a blower for circulating warm air are housed, and a net-like member is provided at the outlet port. A warm air blower. 2. The net-like body is formed by diagonally intersecting a plurality of linear members at predetermined intervals, thereby forming a large number of warm-air blowing openings defined by the linear members in a substantially rhombic shape. The hot air blower according to claim 1, wherein 3. The net-like body is attached via a frame body having substantially the same size as the outer peripheral edge of the air outlet.
Hot air blower described in. 4. The warm air machine according to claim 1, wherein the intake port is also provided with a mesh body. 5. The warm air machine according to claim 1, wherein a variable air flow direction louver is provided at the air outlet. 6. A clothes drying apparatus, wherein the warm air blower according to claim 1 is installed in a relatively narrow space such as a bathroom or a changing room to dry clothes.