JP2982040B2 - Electric heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric hot air blower, and more particularly, to an electric hot air blower for use in drying clothes and warming clothes.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a longitudinal sectional view showing an example of a conventional 0 electric hot air blower disclosed in Japanese Unexamined Patent Publication. Reference numeral 1 denotes a main body case of the electric warmer, which includes a front portion 1a, a rear surface portion 1b, an upper surface portion 1c, and a bottom portion 1d. Reference numeral 2 denotes an air inlet provided on the rear surface portion 1b of the main body case 1 for taking in air into the electric hot air blower. Reference numeral 3 denotes a section for sending air sucked from the air inlet 2 toward an upper outlet (described later). A substantially U-shaped air path, a suction air path section 3a having an opening 4 toward the air suction port 2 of the rear surface 1b, and a bottom air path section 3b for changing the air path direction.
And a blowing air passage 3c formed along the inner wall surface of the front surface 1a.

A lower outlet 5a is opened near a lower portion of the front portion 1a and blows air moving inside the bottom air passage portion 3b toward the outside of the front surface. A lower opening 5b is opened in the upper surface portion 1c to open the inside of the upward air passage portion 3c. An upper outlet for blowing out the moving air to the outside of the upper surface, and a lower outlet 5a depending on the position of the damper 6.
Or from the upper outlet 5b.

[0004] Reference numeral 7 denotes a blower attached to the opening 4 of the suction air passage 3a, which comprises a blower motor 8 and a blower fan 9 rotated by the blower motor 8. Then, the blower fan 9 rotates in the suction air passage 3a, and blows out the air sucked from the air suction port 2 through the opening 4 through the bottom air passage 3b from the suction air passage 3a. The air is sent in the direction of the air passage 3c. Reference numeral 10 denotes a heating element mounted at the bottom of the bottom air passage 3b, and heats the air sent into the bottom air passage 3b by the blower 7.

[0005] The operation of the electric hot air blower configured as described above will be described. The air sucked in from the air inlet 2 is accelerated by a blower fan 9 rotated by a blower motor 8, and once passes through an upper passage 11 provided at an upper portion of the blower 7, and then sucked from behind the blower 7. The airway 3a (in the direction of arrow B) or the front side of the blower 7 directly reaches the suction airway 3a (in the direction of arrow B).
It is heated by the heating element 10 provided in the bottom air passage 3b.
When the damper 6 is open, the air is blown out from the lower outlet 5a through the lower air outlet 5a through the air outlet 3c when the damper 6 is closed. Used for etc.

[0006]

According to the electric warm air blower constructed as described above, when the clothes are dried and the dehydration of the clothes is insufficient, water drops dropped from the clothes are discharged from the upper outlet 5.
b to the bottom air passage portion 3b where the heating element 10 is provided through the blow air passage 3c to short-circuit the bottom air passage portion 3b.
However, there is a problem in that it is not possible to discharge the water accumulated in the U-shaped bottom portion, and it takes time to adjust the hot air outlet by the damper 6.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the heating element does not short-circuit even when water droplets dropped from the upper outlet accumulate in the bottom air passage portion. An object of the present invention is to provide an electric warm air blower that can easily change a blowing direction of warm air without accumulating in an air passage.

[0008]

The electric hot air blower according to the present invention is configured as follows. (1) An air path provided in the case and having a blower at one end and a hot air outlet at the other end and having a substantially U-shaped cross section, and an air path between the blower and a position where the air path starts to change into a U-shape. A heating element provided in the inside, a first leg provided on a bottom surface facing the top surface of the case on the side of the warm air outlet, and a side surface of the case along a blowing direction from the warm air outlet. When the hot air is blown upward, the warm air is blown out in the lateral direction by supporting the first leg to make the hot air outlet upward. In some cases, the warm air outlet is laterally supported by the second leg.

(2) a blower provided at one end provided in the case;
At the other end, an air passage having a substantially U-shaped cross section having a warm air outlet opened on the upper surface of the case, and an air passage between the blower and a position where the air passage starts to change into a U-shape are provided. A heating element; and a drain hole provided at a lowermost end of a bottom of the air passage.

(3) A blower provided at one end provided in the case,
At the other end, an air passage having a substantially U-shaped cross section having a warm air outlet opened on the upper surface of the case, and an air passage between the blower and a position where the air passage starts to change into a U-shape are provided. A heating element; and a drain hole provided on the leeward side of the lowermost end of the bottom of the air passage.

(4) A drain passage connected to the drain hole is formed in a substantially inverted L-shape in section so that the drain water flows substantially horizontally to the windward side near the drain hole.

(5) The drain passage having an approximately L-shaped cross section has a top surface formed by the bottom wall surface of the air passage, and a lower surface formed by inclining slightly downward from the drain hole toward the windward side. And a second drain passage connected to the rear end of the first drain passage and formed substantially vertically.

[0013]

[Function] (1) Air is blown into the air passage by a blower,
It is heated by a heating element to generate warm air, and is placed on the floor by the legs with the warm air outlet facing upward and the warm air is blown upward, or is placed on the floor by the legs with the warm air outlet facing sideways. Warm air is blown out in the horizontal direction to dry clothes and collect warmth.

(2) Water droplets dropped from the clothes due to drying of the clothes, etc., enter from the hot air outlet, reach the bottom, and are discharged from the drain hole provided at the lowermost lower end of the bottom. (3) Water droplets dropped from the clothes due to drying of the clothes, etc., enter from the warm air outlet, reach the bottom, and are discharged into the drain holes provided leeward from the lowermost lower end of the bottom. At this time, the water droplets are smoothly discharged out of the air path without being obstructed by the flow of the warm air. (4) Water droplets dropped from clothing due to drying of clothing, etc., enter from the hot air outlet and reach the bottom, and then drain from a drain hole provided leeward from the lowermost end of the bottom into a drain passage having a substantially inverted L-shaped cross section. Is done. At this time, the water droplets are smoothly discharged out of the air path without being obstructed by the flow of the warm air.

(5) Water droplets dropped from the clothes due to drying of the clothes, etc., enter from the hot air outlet and reach the bottom, and from a drain hole provided leeward from the lowermost lower end of the bottom to a drain passage having a substantially inverted L-shaped cross section. It enters and is discharged from the first drain passage through the second drain passage. In this case, the water droplets are smoothly discharged out of the air path without being obstructed by the flow of the warm air, and the warm air does not leak from the drain holes.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 Before explaining Embodiment 1, a proposal example proposed prior to the present invention will be described with reference to FIG. FIG. 1 is a cross-sectional view of the electric hot air blower. In the figure, reference numeral 20 denotes a main body case of the electric warmer, which comprises a front surface portion 20a, a rear surface portion 20b, an upper surface portion 20c, and a bottom surface portion 20d. Reference numeral 21 denotes an air suction port provided on a rear surface portion 20b of the main body case 20 to take in air into the electric hot air blower.
Is an air passage having a substantially U-shaped cross section for sending air sucked from the air in the direction of a hot air outlet (described later).
Suction air passage 22a having opening 23 in one direction
And a bottom air passage portion 22b provided at the bottom of the air passage 22 to change the air passage direction, and a blow air passage portion 22c formed along the inner wall surface direction of the front surface portion 20a. Reference numeral 24 denotes a warm air outlet that opens to the upper surface portion 20c and blows out the air that has moved inside the outlet air passage portion 22c toward the outside of the upper surface.

Reference numeral 25 denotes a blower attached to the vicinity of the opening 23 in the suction air passage 22a, which comprises a blower motor 26 and a blower fan 27 rotated by the blower motor 26. The blower fan 27 is connected to the suction air passage 22a.
The air that has been rotated and is sucked into the suction air passage 22a from the air suction port 21 through the opening 23 is sent through the bottom air passage 22b in the direction of the blow air passage 22c. It blows out from the exit 24. Reference numeral 28 denotes a heating element such as a ceramic heater, which is provided in the air passage between the blower 25 and the position where the air passage 22 starts to change into a U-shape (in the vicinity of the suction air passage 22a below the blower 25), The air blown by the blower 25 heats the air blown into the suction air passage 22a.
Reference numerals 29 denote legs provided on the bottom portion 20d of the main body case 20 for placing the electric hot air heater on the floor 30. The legs are formed of rubber or the like. For example, a total of four legs are attached to the four corners of the bottom portion 20d.

The operation of the proposed example configured as described above will be described. The air sucked in from the air inlet 21 is sucked in from the opening 23 by a blower fan 27 rotated by a blower motor 26, accelerated and sent out, and generated by a heating element 28 provided below the suction air passage 22a. It is heated and becomes warm air. Then, the direction of the warm air is changed by 180 degrees from the downward direction to the upward direction in the bottom air passage portion 22b, reaches the outlet air passage portion 22c, and blows out from the warm air outlet 24 to the outside to dry clothes. At this time, water droplets 31 such as clothing dropped on the hot air outlet 24 may travel down the outlet air passage 22c and descend to accumulate at the bottom of the bottom air passage 22b. However, since the heating element 28 is located near the blower 25 and at a position higher than the bottom position of the air passage 22, the water droplet 3
1 does not directly contact the heating element 28. Therefore, there is no influence on the heating element 28, and a short circuit, an electric shock and the like due to water can be eliminated. Further, the water droplets 31 are formed in the bottom air passage 22.
Even if it accumulates at the bottom of b, the water droplets are heated and evaporated by the warm air heated by the heating element 28 or the heat of the heating element itself.

Next, a first embodiment of the present invention based on the above proposed example will be described with reference to FIG. FIG. 2 is a longitudinal sectional view of an electric hot air blower showing a first embodiment of the present invention, and a part of the electric hot air blower shown in the proposed example (FIG. 1) is further improved.
By simply changing the position, it can be used for both hot air blowing and horizontal blowing. FIG.
The same reference numerals are given to the same parts as those described above, and the description is omitted. 32
1 is a main leg for floor placement used when the electric hot air blower is used upwardly on the floor 30 as shown in FIG. 1, for example, and is formed of rubber or the like. It is attached individually. Reference numeral 33 denotes a floor-standing auxiliary leg which is used when the electric hot air blower is turned sideways as shown in FIG. For example, a total of four pieces are attached to each of the four corners of the front face portion 20a of the main body case 20.

According to this embodiment configured as described above,
When the electric hot air heater is used for drying clothes, etc., the clothes and the like are turned upside down as shown in FIG. 1 and when used for warming, etc., the clothes are turned sideways as shown in FIG. It is supported on the surface 30. Although FIG. 2 shows a case where the auxiliary leg 33 is provided on the front surface 20a of the main body case 20,
An auxiliary leg may be provided on the rear surface portion 20b so that the rear surface portion 20b may be used with the rear surface portion downward. Therefore, according to the present embodiment, it is possible to easily change both the upper blowing and the horizontal blowing by simply changing the position, and it is possible to eliminate the inconvenience of changing the blowing direction of hot air with a damper or the like as in the related art, It is economically cheap.

Embodiment 2 FIG. 3 is a longitudinal sectional view of an electric hot air blower according to a second embodiment of the present invention. The electric hot air blower shown in FIG. In this way, water drops are prevented from collecting.
The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 34 denotes a drain hole provided at the lowermost end of the bottom air passage portion 22b, and drains water accumulated in the air passage 22 from the bottom portion 20d through a drain passage 35. According to the present embodiment configured as described above, the hot air outlet 24 to the outlet air path portion 22c
The water droplets 31 of the clothes and the like dropped along the drainage are discharged to the floor 30 through the drainage passage 35 of the drainage hole 34. Therefore, the water droplets 31 dripped from the clothing or the like and entered from the warm air outlet 24
Does not accumulate at the bottom of the air passage 22 and is smoothly discharged out of the air passage 22.

Embodiment 3 FIG. 4 is a longitudinal sectional view of an electric hot air blower showing a third embodiment of the present invention, and FIG. 5 is an enlarged longitudinal sectional view of a main part thereof, which is different from Embodiment 2 (FIG. 3). A part of the electric hot air blower shown is improved so that water drops do not accumulate in the air passage 22 and the amount of hot air leaking from the drain hole is minimized. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Reference numeral 37 denotes a drain hole provided on the leeward side in the blowing direction c from the lowermost end of the bottom air passage portion 22b having a substantially U-shaped cross section, and reference numeral 38 denotes a maze-shaped drain passage.

The drainage passage 38 has a substantially inverted L-shaped cross section, and is formed by a first drainage passage 38a and a second drainage passage 38b. And the first drain passage 38a is
The upper surface is closed by the bottom wall surface 36 of the bottom air passage 22b, and the lower surface is formed to be inclined slightly downward as it proceeds in the direction opposite to the blowing direction c. Further, the second drain passage 38b is connected to the rear end of the first drain passage 38a and formed substantially vertically 2.

According to the above-described embodiment, the water droplets 31 such as clothing dropped from the hot air outlet 24 through the outlet air passage 22c are discharged from the drain holes 37 provided at the bottom of the air passage 22. The water flows down to the drain passage 38 having a substantially inverted L-shaped cross section, flows along the lower inclined surface of the first drain passage 38a, reaches the second drain passage 38b, and flows downward from here to the floor 3
Discharged to zero. Therefore, the water droplet 31 dropped from clothing or the like
Does not accumulate at the bottom of the air passage 22. Further, the upper surface of the first drain passage 38a is closed by the bottom wall surface 36 of the bottom air passage 22b, and the lower surface is formed to be slightly inclined downward in a direction opposite to the blowing direction c. When flowing down the substantially inverted L-shaped drain passage 38, the hot air is smoothly discharged out of the air passage 22 without being obstructed by the flow in the direction C, and the amount of hot air leaking from the drain hole 37 is also minimized. And the flow of the warm air itself becomes smooth.

[0025]

As is clear from the above description, according to the present invention, the following effects can be obtained. (1) An air path provided in the case and having a blower at one end and a hot air outlet at the other end and having a substantially U-shaped cross section, and an air path between the blower and a position where the air path starts to change into a U-shape. A heating element provided in the inside, a first leg provided on a bottom surface facing the top surface of the case on the side of the warm air outlet, and a side surface of the case along a blowing direction from the warm air outlet. When the hot air is blown upward, the warm air is blown out in the lateral direction by supporting the first leg to make the hot air outlet upward. In some cases, the warm air outlet is laterally supported by the second leg, so that the heating element does not come into direct contact with the water droplets, so that a short circuit due to water can be eliminated, and the water droplets collect on the bottom surface. Heated and evaporated by warm air or the heat of the heating element itself Can further, since it simply by changing the blowing direction upward and lateral warm air changing the way of placing the body, can be utilized to Todan well drying of clothes.

(2) a blower provided at one end provided in the case,
At the other end, an air passage having a substantially U-shaped cross section having a warm air outlet opened on the upper surface of the case, and an air passage between the blower and a position where the air passage starts to change into a U-shape are provided. Since the heating element and the drain hole provided at the lowermost end of the bottom of the air passage are provided, water dropped from clothes or the like is drained outside without collecting in the air passage, and the electric component is exposed to moisture. There is no adverse effect on metal parts or rusting on metal parts.

(3) a blower provided at one end provided in the case;
At the other end, an air passage having a substantially U-shaped cross section having a warm air outlet opened on the upper surface of the case, and an air passage between the blower and a position where the air passage starts to change into a U-shape are provided. Since the heating element and the drain hole provided on the leeward side from the lowermost end of the bottom of the air passage are provided, the water droplets are not obstructed by the flow of hot air when the water drops in the drain passage. Is discharged smoothly.

(4) Since the cross section of the drainage passage connected to the drainage hole is formed in a substantially inverted L-shape in the vicinity of the drainage hole so that the drainage flows substantially horizontally to the windward side, when the water droplets drop through the drainage passage. In addition to being smoothly obstructed by the flow of the hot air, the air is smoothly discharged out of the air path, the amount of the hot air leaking from the drain hole is reduced, and the flow of the hot air itself is also smooth.

(5) The drain passage having an approximately L-shaped cross section has a top surface formed by the bottom wall surface of the air passage, and a lower surface formed by inclining slightly downward from the drain hole toward the windward side. And a second drain passage connected to the rear end of the first drain passage and formed in a substantially vertical direction. As a result, the air is reliably and smoothly discharged to the outside of the air passage without being obstructed, the amount of hot air leaking from the drain hole is minimized, and the flow of the hot air itself becomes very smooth.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an electric hot air blower showing a proposal example proposed prior to the present invention.

FIG. 2 is a longitudinal sectional view of the electric hot air blower showing the first embodiment of the present invention.

FIG. 3 is a longitudinal sectional view of an electric hot air blower showing a second embodiment of the present invention.

FIG. 4 is a vertical sectional view of an electric hot air blower showing a third embodiment of the present invention.

FIG. 5 is an enlarged longitudinal sectional view of a main part of FIG. 4;

FIG. 6 is a longitudinal sectional view showing an example of a conventional electric hot air blower.

[Explanation of symbols]

22 air passage, 22a suction air passage, 22b bottom air passage, 22c blow air passage, 24 warm air outlet, 25 blower, 28 heating element, 29, 32, 33 leg, 31
Water drop, 34 drain hole, 36 bottom wall, 37 drain hole, 3
8 drainage passage, 38a first drainage passage, 38b second
Drainage passage.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F24H 3/00-3/04 305

Claims (5)

(57) [Claims] 1. A blower provided at one end and provided at the other end in a case.
And air passage of generally U-shaped cross-section having a temperature air outlet, a heating element disposed in the wind path between the position in which the air path between the blower starts changing into a U-shape, the hot air blowing port side On the bottom facing the top of the case
A first leg provided on the case, and a case of the case along a blowing direction from the hot air outlet.
And a second leg provided on a side surface, when the warm air is blown upward, the warm air is blown out in a lateral direction by supporting the first leg and turning the warm air outlet upward. The electric hot air blower is characterized in that, when blowing out, the hot air outlet is laterally supported by the second leg. 2. A blower provided at one end and provided at the other end of the case.
Section having a warm air outlet opened on the upper surface of the case
A substantially U-shaped air path, and a position where the blower and the air path start to change into a U-shape;
An electric warm air blower comprising: a heating element provided in an air passage therebetween; and a drain hole provided at a lowermost end of a bottom of the air passage. 3. A blower provided at one end and provided at the other end of the case.
Cross-section with an open warm air blowing port to an upper surface of the case
A substantially U-shaped air path, and a position where the blower and the air path start to change into a U-shape;
A heating element provided in an air passage between the heating element and a drain provided on a leeward side of a lowermost end of a bottom of the air passage.
An electric hot air blower comprising: a hole ; 4. A drain passage connected to a drain hole, wherein the drain hole is
The electric hot air blower according to claim 3 , wherein a cross section is formed in a substantially inverted L-shape so that the drainage flows substantially horizontally to the windward side in the vicinity . 5. The drain passage having an approximately L-shaped cross section has an upper surface.
A first drain passage formed at the bottom wall surface of the air passage and having a lower surface inclined slightly downward from the drain hole toward the windward side;
When an electric fan heater according to claim 4, characterized in that composed of a second water discharge passage formed in the substantially vertical direction is connected to the rear end of the first drain passage.