JPH02622B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide a compact hot air fan having a heater and control vanes inside a crossflow fan and having a wind direction deflection function.

Conventionally, cross-flow fans with guide vanes arranged inside the fan are known, but this is only for improving the efficiency of the fan. It is not known that it was established at the same time.

1 to 4, 1 is a hot air fan, 2 is a cross flow fan, 3 is a heater section, 4 is a control blade, 5 and 6 are an upper case and a lower case,
7 is a protective cover, 8 is an air volume adjustment knob, and 9 is a heater control knob.

The cross flow fan 2 has a first end plate 10 and a second end plate 11 at both ends thereof, and a partition plate 1
2 and 13 as well as the blade 14 of the crossflow fan 2
is held.

The hollow shaft 15 of the first end plate 10 is connected to the first side plate 16
It is rotatably held by a bearing 17 attached to. Further, the outer shaft 18 of the second end plate 11 is connected at its recess 19 to the shaft 23 of a motor 22 attached to the second side plate 20 by a fixing plate 21. The first side plate 16 and the second side plate 20 are relatively fixed by a support rod 24. The second side plate 20 is fixed to the lower case 6, and the first side plate 16 is fixed to the upper case 5. 25 is a ventilation hole provided in the lower case.

The control vane 4 is held by a holding part 27 of the first shaft 26 and a holding part 29 of the second shaft 28. Further, the shaft 26 is rotatably held by a support plate 30 fixed to the first side plate 16. Further, the shaft 28 is rotatably held by a bearing 32 fixed to an inner shaft 31 of the second end plate 11.
The first shaft 26 is coupled to the dial 33,
This dial 33 can be rotated and fixed at any position by an annular groove 34 and a crest member 35 inserted into this groove.

The control vane 4 has a substantially arc-shaped cross section, and its arc ends 4' and 4'' are connected to the partition plate 12 or 13.
The cross-flow fan 2 is located near the inner circumference 12' of the cross-flow fan 2, and its opening angle is approximately arc-shaped with a radius smaller than the inner diameter of the cross-flow fan 2. It has a certain quality.

The heater section 3 has a heater 37 wound around a hollow core 36 made of an insulator. The lead wire take-out shaft 38 is the first shaft 2 of the control vane 4.
6 and fixed to the upper case 5.
is combined with The lead wire take-out shaft 38 and the first shaft 26 have a double shaft structure with a clearance, and the take-out shaft 38 does not hinder rotation of the control vane 4 about the shafts 26 and 28. Further, the support shaft 40 is supported in a recess 41 provided in the second shaft 28. Lead wire 42 of heater 37,
43 passes through the core body 36, the lead wire take-out shaft 38, and the central shaft portion of the handle 39, is pulled out from a hole 44 provided in the upper case 5, and is connected to an electric circuit section (not shown) of the lower case 6. .

Next, I will explain how it works.

When the motor 22 is turned on by the air volume knob 8, the cross flow fan 2 starts rotating. In FIG. 3, it is assumed that this rotation direction is clockwise. At this time, since the position and shape of the control vane 4 are determined to constrain the low-pressure vortex A, the flow outside the control vane 4 is attracted by this low-pressure vortex A, and the flow along the control vane 4 is The flow goes from to C.

Next, when the heater 37 is turned on by the heater knob 9, the flow from B to C is heated, and hot air is generated.

Next, the dial 33 is rotated to set the control vane 4 to the position shown in FIG. At this time, for the same reason as above, a low-pressure vortex A is generated inside the control vane 4, causing a flow of warm air from B to C in the figure.

In this way, the low pressure vortex A of the cross flow fan 2
By controlling the position of by the control vane 4,
It is possible to deflect the flow in any direction around the circumference. Further, since both the control vane 4 and the heater section 3 are arranged inside the cross flow fan 2, it is possible to provide a hot air fan with a compact overall configuration.

Next, a second embodiment in which the position of the control vane 4 is changed will be described with reference to FIG.

FIG. 5 shows an embodiment in which the heater section 3 is arranged inside the control vane 4. At this time, the position and shape of the control vanes 4 are set so as to confine the low-pressure vortex A, as in the first embodiment. Further, in this case, the control blade 4 is made of a material with good thermal conductivity.

Next, I will explain how it works.

In FIG. 5, when the crossflow fan 2 rotates clockwise, the low-pressure vortex A is constrained inside the control vane 4, and a flow from B to C is generated outside the control vane 4.

The heater section 3 is placed on the side where the low-pressure vortex A exists, but since the material of the control vane 4 is made of a material with good thermal conductivity, the heat of the heater 37 is given to the control vane 4, and the control vane B The airflow can be heated over the entire surface of the flow from to C, and a more uniform temperature distribution can be achieved.

A third embodiment is shown in FIGS. 6 and 7.

A heater 46 is wound around the arc-shaped control vane 45 . 47 is a first shaft attached to the control vane 45. 48 is a second shaft attached to the control vane 45.

In the heater 46, the two wires are sequentially wound around the control vane 45 made of an insulator from the point where they are stopped by the folding stopper member 49, and the lead wires 50, 5
1 is pulled out through the hollow part of the first shaft 47.

This control vane 45 can be placed in the hot air fan 1 instead of the control vane 4 and heater section 3 in the configuration shown in FIG.

That is, the first shaft 47 is supported by the support plate 30 and then coupled to the dial 33. Further, the second shaft 48 is supported by the bearing 32.
The dial 33 has a smaller diameter than the first shaft 47.
The shaft portion 52 passing through the inside of the handle 39 only contacts the handle 39 and is not fixed thereto. Further, in this case, the rotation of the control vane 45 is limited to 360 degrees.

Let's talk about the operation.

In FIG. 7, when the cross flow fan 2 rotates clockwise, a low pressure vortex A appears inside the control vane 45.
occurs, and a flow from B to C is generated.

In this case, since the heater 46 is wound around the control blade 45, a warm air fan with a simpler configuration than in the first and second embodiments is possible.

In FIG. 8, a fourth embodiment will be described.

This is the first embodiment with a guider added. 53 is a stabilizer, and 54 is a rear guider. Other parts are indicated by the same numbers as in the first embodiment. The positions and shapes of the stabilizer 53 and the rear guider 54 are set so that stable low-pressure vortices are not generated outside the inside of the control blade 4 when the control blade 4 rotates.

Next, the operation will be explained.

When the cross flow fan 2 rotates clockwise in FIG. 8, a low pressure vortex A is generated inside the control vane 4. The outer flow of the control vane 4 is a flow from B to C. By rotating the control blade 4, the direction of the blowing flow C can be controlled. In this case, due to the presence of the rear guider 54, the flow velocity of the flow C becomes higher than in the case where there is no rear guider 54, and effective hot air can be obtained.

As described above, in the present invention, since the heater and the control blade for deflecting the wind direction are arranged inside the cross flow fan, a hot air fan with a compact configuration is possible.

At this time, the flow can be directly heated by placing the heater outside the control vane.

Further, if the heater is arranged inside the control vane and the control vane is made of a material with good thermal conductivity, it is possible to generate more uniform hot air.

Also, by combining the control vane and heater,
A warm air fan with a simpler configuration becomes possible.

Furthermore, by arranging the guider to face the cross flow fan, it becomes possible to obtain effective hot air with a higher flow velocity.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of a hot air fan in an embodiment of the present invention, FIG. 2 is a 1' sectional view of FIG. 1,
Figures 3 and 4 are sectional views along the line -' of Figure 1 showing different operating states, Figure 5 is a horizontal sectional view of the hot air fan in the second embodiment, and Figure 6 is the third embodiment. FIG. 7 is a horizontal sectional view of the hot air fan in the third embodiment, and FIG. 8 is a horizontal sectional view of the hot air fan in the fourth embodiment. 1...Hot air fan, 2...Cross flow fan, 3
... Heater section, 4 ... Control vane, 26 ... First shaft (shaft), 28 ... Second shaft (shaft), 30 ... Support plate, 45 ... Control vane, 47 ... Lead wire Take-out shaft (shaft), 48... Support shaft (shaft), 53... Stabilizer, 54... Rear guider.

Claims (1)

[Scope of Claims] 1. A control vane and a heater section are disposed within a cross-flow fan, and the control vane has a substantially circular arc shape with a radius smaller than the inner diameter of the cross-flow fan, and both ends thereof are connected to the cross-flow fan. 1. A hot air blower, characterized in that the direction of flow can be controlled by rotational movement about a shaft that is close to the inner periphery and is attached to the control vane. 2. The hot air fan according to claim 1, wherein the heater portion is arranged outside the arc of the control blade. 3. The hot air fan according to claim 1, wherein the heater portion is arranged inside the arc of the control blade. 4. The hot air blower according to claim 1, wherein the heater portion has a heater wrapped around a control blade.