JPS5946449A - Electric hot air type space heater - Google Patents

Abstract

PURPOSE:To improve the heating effect of the titled heater by reducing sharply the possibility of generation of a shortcircuting phenomenon by a method wherein a first guider and a second guider arranged opposite to each other with a cross-flow type impeller sandwiched therebetween and a heat generating body is embedded in a part located on the downstream side of the impeller. CONSTITUTION:When an impeller 21 is rotated, an eddy 37 about which air currents are formed is generated around the outer periphery of the impeller on the side of a second guider 24. The air currents flowing across the impeller gather around the second guider 24 and since a heat generating body 32 is embedded on the downstream side of the impeller, the gathered air currents receive heat from the heat generating body in an efficient manner so as to be utilized for a hot air heating operation. Further, as the heat generating body has no blowing resistance and the blowing load on the impeller is sharply reduced and further, as an air sucking port 25 and an air discharge port 26 are arranged substantially opposite to each other, it is possible to reduce the possibility of generation of a shortcircuiting phenomenon.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention heats air drawn from an intake port by a cross-flow type impeller with a heating element to produce warm air, and then discharges the warm air. This relates to an electric warm air heater that blows air indoors.

Conventional Structure and Problems A conventional electric hot air heater of this type was constructed as shown in FIG. That is, 1 is an exterior body, 2 is a blower disposed inside the exterior body 1, and this blower 2 includes a cross-flow type impeller 3 and a tongue portion 4 that faces each other with the impeller 3 in between.
and rear gear 5. Reference numeral 6 denotes a wind cylinder disposed within the exterior body 1, and the wind body 6 is connected between a discharge lower provided on one side of the front surface 1 of the exterior body 1 and the downstream side of the blower 2. Reference numeral 8 designates a heating element disposed in the ventilation passage 9 within the wind barrel 6, and reference numeral 10 represents an air intake port provided at the lower front surface of the exterior body 1 located on the downstream side of the blower 2.

''-Conventional configuration-C1 The operation will be explained.

When the middle blade 3 rotates to the force plane shown by the dashed arrow, the tongue part 4
A vortex 11, which is the basis of the flow, is formed on the outer periphery of the inner blade 3 in the vicinity of . Due to the formation of this vortex 11, an airflow is formed from the intake port 1o through the ventilation path 9 toward the exhaust port 1o. This air flow is heated by coming into contact with a heating element 8 disposed in the ventilation passage 9, and is discharged as warm air from the leaves 11 and 17, and is used to heat the room.

However, in the conventional configuration described above, since the heating element 8 is disposed within the ventilation path 9, the air resistance due to the heating element 8 is large, and this accounts for most of the air blowing load on the blades 3. At the same time, as the airflow passes through the heating element 8, the airflow d: causes turbulence due to collision with the heating element 8. As a result, the air blowing load further increases and resonance noise is generated. 11. If it occurs, it will be very harmful to the user. This had the problem that it would become sticky. In the conventional configuration, the discharge lower and the intake air 1'10 are in the same plane of the exterior body 1.
The airflow discharged from I y is directly inhaled r'l 10
This could cause a so-called short circuit in which the air flows to the heating element, and as a result, this was also the cause of the reduction in the heating effect.

Purpose of the Invention In view of the above-mentioned conventional problems, the present invention has developed a so-called Soyota Surgino, which can significantly reduce the blowing load due to the inside of the blade, and in which the air flow discharged from the discharge port flows directly to the intake port. The purpose of the present invention is to provide an electric hot air heater that can significantly reduce the occurrence of hot air.

Structure of the Invention In order to achieve the above-mentioned object, the present invention provides a method in which a first filter and a second filter are arranged facing each other in a cross-flow type impeller, and are located upstream of the impeller. The first guide and the second guide form an intake port, and the first guide and the second guide form a discharge port located on the downstream side of the impeller. ,
the impeller, a first guide and a second guide d
5. To keep their positional relationship constant, the rotary plate provided below the impeller and the supporting plates provided on two sides of the impeller are integrally connected, and the first The Kaigoo is provided with a first tongue located on the downstream side of the impeller and close to the outer periphery of the blade 111, and a second Kaigoo 11715 and a first tongue portion are provided.
The tongue and the impeller are opposed to each other in a substantially circular arc shape, and one end of the arc surface located on the second flow side of the impeller has a second tongue close to the outer periphery of the impeller. The arcuate surface is formed so that a gap with the outer periphery of the impeller gradually increases from one end to the other end, and further;
A heating element is buried in the downstream side of the impeller in the ``ig2''.

According to the above configuration, when the impeller rotates and an airflow is formed, the vortex, which is the center of airflow formation, is directed to the second airflow side opposite to the first tongue provided on the first airflow. Since it is formed near the outer periphery of the impeller, the airflow that flows through the impeller is concentrated near the second impeller, and the air flow is concentrated near the second impeller. A heating element is buried in the part located on the first stream side. 1) The IJ airflow can efficiently receive the heat of this heating element and can be used for hot air heating. At the same time, since there is no heating element in the ventilation path connecting the intake port and the discharge port, there is no air resistance due to the heating element, and as a result, the air blowing load due to the inside of the blade can be significantly reduced. Since the discharge ports are provided on almost the opposite side, it is possible to significantly reduce the occurrence of so-called short circuits, where the airflow discharged from the discharge ports flows directly to the intake ports, as in the past. .

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described and explained below with reference to FIGS. 2 and 3. FIG. 2 shows an embodiment of the present invention.
A top sectional view is shown to explain the operating principle of the R3 hot air heater, and FIG. 3 is a perspective view of the electric hot air heater.

In FIGS. 2 and 3, reference numeral 21 denotes a cross-flow type impeller, which is disposed vertically in the blade 21, and below the impeller 21 for rotationally driving the impeller 21. 1°23.24 in which the electric motor 22 of the impeller 21 is disposed is a first guide and a second guide which are disposed facing each other with the impeller 21 in between.
1- On the flow side, the first guide 23 and the second guide 24 form an intake air 25, and the blade A
j+! ,! The discharge port 26 is located on the upstream side of the lc 21 and is opened by the first guide 23 and the second guide 24.
1. The impeller 21, the first guide 23 and the plane, and the second guide 24 form the shaft 1.
In order to keep the relationship constant, a rotating plate 27 provided below the impeller 21 and a support plate 28 provided above the impeller 21 are integrally connected to each other. As the rotating plate 27 rotates, the first guide 23 and the second guide 24 move along the outer periphery of the impeller 21 around the rotation axis 21a of the impeller 21 in the direction indicated by the chain double-dashed arrow a-a. '
It rotates in the direction.

29i1″1, provided in the first guide 23/this first
This first tongue portion 29←1 is located on the downstream side of the impeller 21 and is formed so as to be close to the outer periphery of the blade middle 21. Size/This second Gai Goo 24C11, first
The tongue portion 29 and the surface 30 facing the impeller 21 are formed in a multi-circle arc shape, and one end of the arc surface located upstream of the impeller 21 has an outer periphery of the impeller 21. A second tongue portion 31 is provided adjacent to the second tongue portion 31, and the arcuate surface 30 is formed so that the gap with the outer periphery of the impeller 21 gradually increases from one end to the other end. 32 is a heating element such as a sheathed heater buried in a portion of the second guide 24 located downstream of the impeller 21;
2 is buried closely so that the amount of heat generated is particularly high at the portion facing the first tongue portion 29.

33'lJ, a plurality of deflection vanes located and disposed at the l1l-:fl- 260 portion, these deflection vanes 33 are integrally connected via a connecting rod 34, and these deflection vanes 33 are integrally connected via a connecting rod 34, and The blades 33 have a tiltable structure in order to deflect the air flow sent from the impeller 21 in the vertical direction, that is, in the rotation i11+ direction of the impeller 21. The rotary plate 27 is automatically rotated by using the electric BOJ machine 22 as a power source via a cam, gears (none of which are shown), etc. ), the plurality of deflection blades 33 are also configured to be tilted and movable periodically in the vertical direction, that is, in the downward direction. 35 is a base of the electric hot air heater, and this base 35 has the electric motor 22 built therein. 36 is a protective net disposed to prevent pieces of paper etc. from flowing into the electric hot air heater.''The function of the structure described in the above will be explained next.

When the impeller 21 rotates in the direction indicated by the dashed line, the air intake port 25
As shown by the solid arrow, external air is sucked in from the vicinity of the upstream side of the first tongue portion 29 toward the circular arc surface 30 of the second tongue portion 24 toward the impeller 21.
The hot air then flows along the inner surface of the second guide 24 and is heated by the heating element 32 to become hot air, which is then discharged from the discharge port 26 to the outside of the machine. In this case, the air flow becomes a flow as shown by the solid line arrow in FIG. As a result, the airflow that has flowed across the blades 1 and 21 is concentrated near the second guide 24. It becomes flowing. In this case, the heating element 32 kl: is buried densely in the part of the second guide 24 facing the first tongue part 29, that is, in the part where the main flow of the air flow is concentrated due to the vortex flow 37. Therefore, the air flow efficiently receives heat from the heating element 32 and becomes warm air, which is discharged from the discharge port 26. Since the heating element 32 is buried in the second guide 24, there is no heating element 32 in the ventilation path connecting the intake port 25 and the discharge port 26, and as a result, the hot air resistance due to the heating element 32 is reduced. Therefore, the air blowing load caused by the impeller 21 can also be significantly reduced.

Since the airflow flows as shown by the solid arrow in FIG. In the same direction, the discharge flow from L:l 26 is the intake air 1]2
The occurrence of so-called gnats flowing directly to 1.5 is significantly reduced, and the heating efficiency is further improved. The best thing is to let it happen. And then there is the moat, where the wing 21, the first Kaigu 23, and the second Kaigu 24 are integrally connected by a rotary plate 27 and a support plate 28. By doing so, the feather middle 21 and the first Kaigu 23 and the 0th and 2nd
Keeping the positional relationship with the roller 24 constant for 1 hour until 74 inches, the first roller 23 and the second roller 24 are rotated along the outer periphery of the wheel 21. As a result, the air inflow and UL output direction can be changed in any direction around the rotation axis of the impeller 210 without changing the air blowing performance. ,'t 1i-
A plurality of deflection blades 33 are arranged on the output 126 of 111 and 126 for deflecting the air flow in the vertical direction, and the deflection blades 33 rotate in 11 cycles according to the rotation of the rotary plate 27. Since the impeller 2 is configured to be able to move in the vertical direction, the rotation of the rotary plate 270 by one angle downward, the impeller 2 rotates.
Rotation of 1fl'1ll-: In addition to a change in the wind direction of 1, it is possible to cause a change in the wind direction in the vertical and downward directions, and as a result, it is possible to effectively blow hot air into the indoor space. to 1
11 can be issued.

Effects of the Invention As described above, according to the electric hot air heater of the present invention, when the impeller rotates and an airflow is formed, the vortex, which is the center of the airflow formation, The airflow that flows across the impeller is formed near the outer periphery of the impeller on the second side facing the first tongue, and the airflow that flows across the impeller is concentrated near the second side. Since a heating element is embedded in the part of the second guide mite located downstream of the impeller, the airflow can efficiently receive the heat of this heating element, resulting in hot air heating. In addition, since there is no heating element in the ventilation path connecting the inlet 1 and the outlet 1, there is no air blowing resistance due to the heating element, and as a result, the air blowing load caused by the impeller can be significantly reduced. Moreover, since the intake port and the discharge port are located on almost opposite sides, it is possible to significantly reduce the occurrence of so-called short circuits, where the airflow discharged from the discharge port flows directly to the intake port, which is the case with conventional systems. This tube has various excellent features.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view showing a conventional electric hot air heater, Fig. 2 is a top sectional view illustrating the operating principle of the electric hot air heater according to an embodiment of the present invention, and Fig. 3 is the same. It is a perspective view of an electric warm air heater. 21... Impeller, 23... First Kaigu, 24... Second Kaigu, 25...
...Intake port, 26...Discharge port, 27...
・Rotating plate, 28...Support plate, 29...
First tongue portion, 30... Arc surface, 31...
- Second tongue portion, 32... heating element. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 11 Figure 2 Figure 3

Claims (1)

[Claims] A cross-flow type impeller is sandwiched between the first and second
The blades are arranged facing each other, and the -
1 - located on the flow side, the first gas and the second gas will form an intake air (■), and located on the downstream side of the impeller, the first gas and the second gas will form an intake air In order to maintain a constant positional relationship between the impeller, the first gear, and the second gear, a rotary plate provided below the impeller and the blade of the impeller are formed. The first tongue is integrally coupled with support plates provided on two sides, and the first tongue is provided with a first tongue located downstream of the impeller and close to the outer periphery of the impeller, and The second Gai Goo is
A surface facing the first tongue and the impeller is formed into a substantially arc shape, and a second tongue close to the outer periphery of the impeller is formed at one end of the arc surface located upstream of the impeller. is provided, and the arcuate surface extends from one end to the other end with a wing 41.
1! Formed so that the gap with the outer circumference of the car gradually expands,
Furthermore, the electric hot air heater has a heating element buried in the part located downstream of the impeller in the second guide.