JP2023030466A - circulator - Google Patents

Abstract

To provide a circulator capable of efficiently heating air drawn from an outside.SOLUTION: A circulator 1 comprises: a rotating shaft 31 extending in a front-back direction; a blade housing 21 including an intake port 215 and a blowing port 216; multiple blades 32 fixed to the rotating shaft 31 and configured to draw air outside the blade housing 21 into the blade housing 21 through the intake port 215 and push the drawn air out of the blade housing 21 through the blowing port 216; and a heater 4 for heating air drawn into the blade housing 21 through the intake port 215. A position of the heater 4 along an extension direction DN of the rotating shaft 31 is forward of a position of the multiple blades 32 along the extension direction DN of the rotating shaft 31. The heater 4 includes: first and second insulations fixed to the blade housing 21; and first and second heating elements wound about the first and second insulations, respectively.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to a circulator, and more particularly to a circulator with a heating section.

A circulator is known as a home appliance that circulates the air in the space in which it is installed. Circulators are used to ventilate a room, improve the efficiency of cooling or heating, and accelerate the drying of laundry.

Patent Document 1 below discloses a fan-cum-electric stove that heats air drawn from the outside with a heater and blows the heated air to the outside by rotating a plurality of blades around a rotation axis. . This electric fan/electric stove includes a reflector arranged on the front surface of a main body, a fan provided substantially in the center of the reflector with a gap from the reflector, a motor for rotating the fan, It has a heater provided near the outside of the fan, and a control section for controlling forward and reverse rotation of the motor. When the heater is energized, the fan/electric heater draws in outside air from the central portion and emits it from the outer circumference, and when the heater is cut off, draws in outside air from the outer circumference and emits it from the central portion.

JP 2013-209794 A

As a method of further promoting the drying of laundry or a method of using the circulator itself for heating, a method of mounting a heating unit on the circulator is conceivable. However, when the heating part is mounted on the circulator, the air sucked from the outside cannot be efficiently heated by the heating part, and the temperature of the blown air is low.

SUMMARY OF THE INVENTION An object of the present invention is to provide a circulator capable of efficiently heating air sucked from the outside.

A circulator according to one aspect of the present invention includes a rotating shaft extending in the front-rear direction, an intake port provided on a surface on the rear side in the extending direction of the rotating shaft, and a surface on the front side in the extending direction of the rotating shaft. and a plurality of blades fixed to a rotating shaft, wherein the air outside the housing is sucked into the housing through the air inlet, and the sucked air is sucked into the housing through the air blowing outlet. It comprises a plurality of blades that are sent to the outside of the body, and a heating part that heats the air sucked into the housing from the intake port, and the position of the heating part along the extending direction of the rotating shaft is the extending direction of the rotating shaft. The heating part is fixed to the housing and surrounds the rotating shaft when viewed from the extending direction of the rotating shaft. and each of first and second heating elements wound around each of first and second insulating portions.

In the above circulator, the housing preferably blocks inflow of air from outside the housing into the heating section in a direction perpendicular to the extending direction of the rotating shaft of the heating section.

The circulator preferably further includes a support portion fixed to the housing and supporting the first and second insulating portions.

In the above circulator, preferably, each of the first and second heat generating elements is positioned radially inward from each of the first and second insulating portions when viewed from the direction in which the rotating shaft extends. , the portion existing on the outer diameter side is longer than each of the first and second insulating portions.

In the above circulator, preferably, the position of the front end of the intake port along the extending direction of the rotating shaft is on the rear side of the positions of the front ends of the plurality of blades along the extending direction of the rotating shaft.

The above circulator preferably further comprises a straightening section provided at a position forward of the plurality of blades along the extending direction of the rotating shaft and rearward of the heating section, wherein the straightening section is , including a plurality of guard portions for colliding air sent from the plurality of blades, each of the plurality of guard portions having an arc shape when viewed from the extending direction of the rotating shaft.

ADVANTAGE OF THE INVENTION According to this invention, the circulator which can heat the air sucked from the outside efficiently can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS It is a front view which shows typically the structure of the circulator 1 in one embodiment of this invention. It is a rear view which shows typically the structure of the circulator 1 in one embodiment of this invention. 3 is a cross-sectional view showing the internal configuration of the blade housing 21 and the like; FIG. 3 is a cross-sectional perspective view showing the internal configuration of the blade housing 21 and the like; FIG. 4 is a front view schematically showing the configuration of a heating section 4 and a support section 5. FIG. 4 is a front perspective view schematically showing the configuration of the heating unit 4 and the support unit 5. FIG. FIG. 3 is a side view schematically showing the configuration of a heating section 4 and a support section 5; 4 is a front view schematically showing the configuration of a rectifying section 6; FIG. 4 is a front perspective view schematically showing the configuration of the rectifying section 6. FIG. FIG. 4 is a diagram showing the relationship between air flowing from air intake port 215 to air blowing port 216 and heating elements 421 and 422 in one embodiment of the present invention.

An embodiment of the present invention will be described below with reference to the drawings. In the following description, the direction from the air inlet 214 to the air outlet 216 along the extending direction DN of the rotating shaft 31 is forward, and the direction from the air inlet 216 to the air inlet 214 along the extending direction DN of the rotating shaft 31 The direction to go is written as posterior.

1 and 2 are diagrams schematically showing the configuration of a circulator 1 according to one embodiment of the present invention. 1 is a front view and FIG. 2 is a rear view.

1 and 2, a circulator 1 (an example of a circulator) includes a housing 2, a blower section 3, a heating section 4 (an example of a heating section), and a support section 5 (an example of the support section). , a rectifying section 6 (an example of a rectifying section), and a control section 7 . Inside the housing 2, a blower section 3, a heating section 4, a support section 5, a straightening section 6, and a control section 7 are provided.

The housing 2 includes a blade housing 21 (an example of housing), a neck 22 and a stand 23 . Inside the blade housing 21, a blowing section 3, a heating section 4, a supporting section 5, and a rectifying section 6 are provided. Blade housing 21 can swing relative to neck 22 about axis AX1 as indicated by arrow AR1. The blade housing 21 may be rotated around the axis AX1 by electric power supplied from the control unit 7 so as to blow air in an appropriate direction, or may be rotated around the axis AX1 by the user of the circulator 1. may

The neck portion 22 is provided at the lower portion of the blade housing 21 . The neck portion 22 connects the stand 23 and the blade housing 21 . Neck 22 extends upward from stand 23 . The blade housing 21 and the neck portion 22 can swing about the axis AX2 with respect to the stand 23 as indicated by the arrow AR2 by electric power supplied from the control portion 7 . The function of swinging the blade housing 21 and the neck 22 relative to the stand 23 about the axis AX2 as indicated by the arrow AR2 is called a swing function.

A stand 23 is provided below the neck portion 22 . The stand 23 accommodates the controller 7 . An operation unit 231 is provided on the side surface of the stand 23 . The operation unit 231 accepts user's operation of the circulator 1 . The operation unit 231 is, for example, an operation to turn on and off the power of the circulator 1, an operation to adjust the air volume, an operation to switch the operating state of the circulator 1 between the heating mode, the clothes drying mode, and the air blowing mode, and to turn on the power of the circulator 1. It accepts an operation to turn on or set the time until it turns on, an operation to turn on or off the swing function of the blade housing 21, and the like.

The control unit 7 controls the operation of the circulator 1 as a whole based on settings or operations received by the operation unit 231 .

FIG. 3 is a cross-sectional view showing the internal configuration of the blade housing 21 and the like. FIG. 4 is a cross-sectional perspective view showing the internal configuration of the blade housing 21 and the like. 3 and 4 show cross sections along line III-III in FIG.

1 to 4, the blade housing 21 includes an inner case 211, an outer case 212, a connecting portion 213, an air intake port 214, an air intake port 215 (an example of an air intake port), and a blower port 216. (an example of a blower port).

The inner case 211 has a substantially cylindrical shape and forms a space SP1 inside the blade housing 21 .

The outer case 212 has a substantially cylindrical shape and covers the inner case 211 across a space SP2. Outer case 212 is connected to neck 22 .

The connecting portion 213 connects the inner case 211 and the outer case 212 . The outer case 212 fixes the inner case 211 via the connecting portion 213 .

The intake port 214 is provided on the rear surface of the inner case 211 (the surface on the rear side in the extending direction DN of the rotating shaft 31). The intake port 214 extends forward from the rear surface of the inner case 211 and reaches a part of the side surface of the inner case 211 (a surface that exists in a direction orthogonal to the extending direction DN of the rotating shaft 31). . The intake port 214 is configured by, for example, a plurality of arc-shaped holes.

The intake port 215 is provided on the back surface of the outer case 212 (the surface on the rear side in the extending direction DN of the rotating shaft 31). The intake port 215 extends forward from the rear surface of the outer case 212 and reaches a part of the side surface of the outer case 212 (a surface that exists in a direction orthogonal to the extending direction DN of the rotating shaft 31). . The intake port 215 is configured by, for example, a plurality of arc-shaped holes. The air outside blade housing 21 passes through each of intake ports 215 and 214 in this order and is supplied to the inside of blade housing 21 .

Each of the air intake ports 214 and 215 may be provided only on the rear surface of each of the inner case 211 and the outer case 212, and may not reach a part of the side surface of each of the inner case 211 and the outer case 212. good.

The air outlet 216 is provided on the front surface of the inner case 211 (the surface on the front side in the extending direction DN of the rotating shaft 31). The blower port 216 covers the front end side opening of the inner case 211 . The blower port 216 is composed of, for example, a plurality of arc-shaped holes.

The air outlet 216 is provided on the front surface of the inner case 211 (the surface on the front side in the extending direction DN of the rotating shaft 31). The blower port 216 covers the front end side opening of the inner case 211 . The blower port 216 is composed of, for example, a plurality of arc-shaped holes.

In addition, a filter that prevents dust in the air from entering the heating unit 4 may be detachably provided in the intake port 214 or 215 .

The air blower 3 includes a rotary shaft 31 (an example of a rotary shaft), a plurality of blades 32 (an example of the plurality of blades), a motor 33 , a female screw 34 and a sleeve 35 . The rotating shaft 31 extends in the front-rear direction. A rear end of the rotating shaft 31 is fixed to the motor 33 , and the rotating shaft 31 protrudes forward from the motor 33 .

Each of the multiple blades 32 is integrated with a sleeve 35 and fixed to the rotating shaft 31 . Each of the plurality of vanes 32 extends radially outward from the sleeve 35 . The sleeve 35 is fixed to the rotating shaft 31 , and the blades 32 and the sleeve 35 rotate together with the rotating shaft 31 . The plurality of blades 32 suck the air outside the blade housing 21 into the inside of the blade housing 21 through the intake ports 214 and 215, and the sucked air is passed through the rectifying section 6 and the heating section 4 from the air blowing port 216 to the blade housing. Send to the outside of the body 21 . An arrow AR3 indicates the air flow due to the rotation of the plurality of blades 32. As shown in FIG.

When each of the intake ports 214 and 215 reaches a part of each side surface of the inner case 211 and the outer case 212, the front ends of the intake ports 214 and 215 along the extending direction DN of the rotating shaft 31 The position PO<b>1 exists on the rear side of the position PO<b>2 of the front ends of the plurality of blades 32 along the extending direction DN of the rotating shaft 31 . As a result, while the areas of the intake ports 214 and 215 are increased, the air outside the blade housing 21 flows into the heating unit 4 from the direction orthogonal to the extending direction DN of the rotating shaft 31 (as indicated by the arrow AR4). air inflow) can be suppressed.

The motor 33 rotationally drives the rotating shaft 31 by electric power supplied from the control unit 7 .

The female thread 34 is screwed into a male thread formed at the tip of the rotating shaft 31 . The female screw 34 holds the sleeve 35 between itself and the motor 33 , thereby fixing the positions of the plurality of blades 32 and the sleeve 35 along the rotating shaft 31 .

The heating unit 4 heats the air drawn into the blade housing 21 through the intake ports 214 and 215 . The position of the heating unit 4 is on the front side of the positions of the plurality of blades 32 and the sleeve 35 along the extending direction DN of the rotating shaft 31 .

The support portion 5 is fixed to the blade housing 21 through the straightening portion 6 . The support portion 5 supports the heating portion 4 .

The straightening section 6 straightens the air sent from the plurality of blades 32 and sends the air to the heating section 4 . The straightening section 6 has a substantially circular shape when viewed from the extending direction DN of the rotating shaft 31 , and its outer peripheral end is fixed to the inner case 211 . The rectifying unit 6 is positioned forward of the position PO2 of the front ends of the plurality of blades 32 along the extending direction DN of the rotating shaft 31 and rearward of the position PO3 of the rear end of the heating unit 4. is provided. The straightening unit 6 divides the space SP1 inside the blade housing 21 into a space in which the plurality of blades 32 are provided and a space in which the heating unit 4 is provided. The rectifying portion 6 includes, for example, a plurality of arc-shaped holes for passing air.

The control unit 7 may control the operating state of the circulator 1 as follows according to the set mode.

The heating mode is a mode for blowing a small amount of relatively high temperature air. When the operating state of the circulator 1 is set to the heating mode, the control unit 7 sets the rotational speed of the plurality of blades 32 to the first speed (low speed), thereby reducing the amount of air blown by the air blower 3. Control. The control unit 7 performs heating by the heating unit 4 by supplying electric power to the heating unit 4 . As a result, relatively high temperature and relatively small amount of air is blown from the blower port 216 .

The clothes drying mode is a mode in which a large amount of relatively low-temperature air is blown. When the operating state of the circulator 1 is set to the clothes drying mode, the control unit 7 sets the rotational speed of the plurality of blades 32 to a second speed (high speed) faster than the first speed, thereby blowing air. The amount of air blown from the unit 3 is controlled to a large amount. The control unit 7 performs heating by the heating unit 4 by supplying electric power to the heating unit 4 . In the clothes drying mode, as a result, a relatively large amount of air at a relatively low temperature (higher than room temperature) is blown from the blower port 216 .

A ventilation mode is a mode which ventilates the air of room temperature. When the operating state of the circulator 1 is set to the blowing mode, the control unit 7 controls the blowing amount of the blowing unit 3 to the set amount. The control unit 7 stops power supply to the heating unit 4 . As a result, the room-temperature air sucked from the intake port 215 is blown from the blower port 216 as it is.

5 to 7 are diagrams schematically showing configurations of the heating section 4 and the support section 5. FIG. 5 is a front view, FIG. 6 is a front perspective view, and FIG. 7 is a side view. 5 and 6 omit the illustration of the portions of the heating elements 421 and 422 that are located on the inner diameter side of the insulating portions 411 and 412, respectively.

3 to 7, heating unit 4 includes insulating portions 411 and 412 (examples of first and second insulating portions) and heating elements 421 and 422 (examples of first and second heating elements). ) and

Each of the insulating portions 411 and 412 is made of an insulating material, is supported by the support portion 5 , and is fixed to the blade housing 21 via the support portion 5 . Each of the insulating portions 411 and 412 holds each of the heating elements 421 and 422 insulated from the housing 2 . Each of insulating portions 411 and 412 has, for example, an annular shape when viewed in extending direction DN of rotating shaft 31 and surrounds rotating shaft 31 . The insulating portion 412 surrounds the rotating shaft 31 at a position behind the position of the insulating portion 411 along the extending direction DN of the rotating shaft 31 . The extending direction of each of insulating portions 411 and 412 is orthogonal to extending direction DN of rotating shaft 31 .

Each of the heating elements 421 and 421 is a conductive wire, which is spirally wound around each of the insulating portions 411 and 412 . A current flows through each of the heating elements 421 and 422 due to the power supplied by the control unit 7 . Thereby, each of the heating elements 421 and 422 generates heat to heat the air inside the blade housing 21 . Each of heating elements 421 and 422 is made of, for example, a nichrome wire. The heating element 421 is fixed to the insulating portion 411 by sandwiching the insulating portion 411 from the front and rear at a fixing position 423 . The heating element 422 is fixed to the insulating portion 412 by sandwiching the insulating portion 412 from the front and rear at a fixing position 424 .

When viewed from the extending direction DN of rotating shaft 31 , each of fixing positions 423 and 424 is provided on the inner diameter side of the radial center portion of each of heating elements 421 and 422 . In other words, the portions of the heating elements 421 and 422 that are present on the outer diameter side of each of the insulating portions 411 and 412 are greater than the portions of the respective heating elements 421 and 422 that are on the inner diameter side of each of the insulating portions 411 and 412. Each part is longer. As a result, since each of the heating elements 421 and 422 protrudes into the space on the outer diameter side of each of the insulating portions 411 and 412, most of the air flowing from the intake port 214 to the blowing port 216 passes through the heating elements 421 and 422. will come to As a result, the air can be efficiently heated inside the blade housing 21 .

Note that, as shown in FIG. 3, the outer diameter side end of the heating unit 4 (the end in the direction perpendicular to the extending direction DN of the rotating shaft 31) is covered with an inner case 211 and an outer case 212. ing. Holes are not formed in the portions of the inner case 211 and the outer case 212 that cover the outer diameter side end portion of the heating portion 4 . As a result, the inflow of air from the outside of the blade housing 21 into the heating unit 4 from the direction perpendicular to the extending direction DN of the rotating shaft 31 (inflow of air as indicated by arrow AR4) is directed to the inner case 211 and the outer case. 212.

The support portion 5 includes a rear portion 51 , an arm portion 52 and a front portion 53 . The rear portion 51 has a plate shape and is fixed to the straightening portion 6 using screws (not shown) or the like. Thus, the support portion 5 is fixed to the blade housing 21 through the straightening portion 6 . The rear portion 51 is located on the rear side of the heating portion 4 . The rear portion 51 has, for example, a hexagonal shape when viewed from the extending direction DN of the rotating shaft 31 .

There are six arms 52 here. Each of the six arm portions 52 protrudes forward from the rear portion 51 . Each of the six arm portions 52 protrudes parallel to the extending direction DN of the rotating shaft 31 . Each of the six arm portions 52 supports each of the insulating portions 411 and 412 from the inner diameter side of each of the insulating portions 411 and 412 .

The front portion 53 has an annular shape when viewed from the front, and is connected to the front ends of each of the six arms 52 .

8 and 9 are diagrams schematically showing the configuration of the rectifying section 6. FIG. 8 is a front view, and FIG. 9 is a front perspective view.

3, 4, 8, and 9, rectifying portion 6 includes an inner diameter portion 61, a plurality of guard portions 62 (an example of a plurality of guard portions), and an outer diameter portion 63. there is The inner diameter portion 61 is provided at a position overlapping the rotating shaft 31 when viewed from the front. A rear portion 51 of the support portion 5 is fixed to the inner diameter portion 61 .

Each of the plurality of guard portions 62 radially extends from the inner diameter portion 61 and connects the inner diameter portion 61 and the outer diameter portion 63 . Each of the plurality of guard portions 62 has an arc shape when viewed from the extending direction DN of the rotating shaft 31 , and the distance between the adjacent guard portions 62 increases as the distance from the inner diameter portion 61 increases. Each of the plurality of guard portions 62 serves to collide the air sent from the plurality of vanes 32 and forms a plurality of holes 64 for passing the air.

The outer diameter portion 63 has an annular shape and surrounds the outer circumference of the inner diameter portion 61 . The outer diameter portion 63 constitutes the outer diameter side end portion of the straightening portion 6 and is fixed to the blade housing 21 .

Since the air sent from the plurality of blades 32 is rotating, it tends to diffuse in the outer diameter direction (direction away from the position of the rotating shaft 31 when viewed from the front) due to centrifugal force. By providing the rectifying portion 6 including the plurality of guard portions 62 having an arc shape when viewed from the extending direction DN of the rotating shaft 31, the air sent from the plurality of blades 32 collides with each of the guard portions 62. , stay in the vicinity of the position of the rotating shaft 31 when viewed from the front in a swirling manner. Diffusion of the air sent from the plurality of blades 32 in the outer diameter direction is suppressed. As a result, the air sent from the plurality of blades 32 to the heating unit 4 concentrates near the center (near the rotating shaft 31 when viewed from the front) and easily passes through the heating unit 4, effectively sucking air from the outside. Can be heated.

[Effects of Embodiment]

FIG. 10 is a diagram showing the relationship between air flowing from inlet 215 to blower 216 and heating elements 421 and 422 in one embodiment of the present invention.

Referring to FIG. 10, in the present embodiment, as indicated by arrow AR3, the air outside blade housing 21 flows out of blade housing 21 through intake ports 215 and 214 due to the rotation of blades 32. The air is sucked inside, passes through the blades 32 , the rectifying section 6 , and the heating section 4 in this order, and is sent to the outside of the blade housing 21 through the air blowing port 216 . The air sent from the plurality of blades 32 is straightened when passing through the straightening section 6 and heated when passing through the heating section 4 . The heated air is immediately sent to the outside of the blade housing 21 through the blower port 216 . As a result, it is possible to avoid a situation in which the heat of the high-temperature air that has passed through the heating section 4 is taken away by the plurality of blades 32, and it is possible to efficiently heat the air sucked from the outside.

In addition, in the present embodiment, each of the two heating elements 421 and 422 arranged in the extending direction of the rotating shaft 31 is wound around each of the insulating portions 411 and 412 surrounding the periphery of the rotating shaft 31. ing. As a result, most of the air flowing from inlet 215 to blower 216 (air flowing in the direction indicated by arrow AR3) passes through four heating elements 422a, 422b, 421a, and 421b in this order. As a result, the air sucked from the outside can be efficiently heated.

[others]

The heating part may be fixed to the housing and include only one insulating part surrounding the rotating shaft and only one heating element wound around the insulating part. The rectifying section may be omitted.

The above-described embodiments and modifications should be considered illustrative in all respects and not restrictive. The scope of the present invention is indicated by the scope of the claims rather than the above description, and is intended to include all modifications within the meaning and range of equivalents of the scope of the claims.

1 Circulator (an example of a circulator)
2 housing 3 air blower 4 heating unit (an example of a heating unit)
5 Supporting part (an example of supporting part)
6 rectification section (an example of rectification section)
7 control unit 21 blade housing of housing (an example of housing)
22 Neck of housing 23 Stand of housing 31 Rotation shaft of air blower (an example of rotation shaft)
32 blades of blower (an example of a plurality of blades)
33 Motor of blower section 34 Female screw of blower section 35 Sleeve of blower section 51 Rear part of support section 52 Arm section of support section 53 Front section of support section 61 Inner diameter section of straightening section 62 Guard section of straightening section One case)
63 Outer diameter portion of rectifying portion 64 Hole of rectifying portion 211 Inner case of blade housing 212 Outer case of blade housing 213 Connecting portion of blade housing 214, 215 Air intake port of blade housing (an example of an air intake port)
216 blower port (an example of a blower port)
231 Operation unit of stand 411, 412 Insulation unit of heating unit (an example of first and second insulation units)
421, 422, 421a, 421b, 422a, 422b heating element of heating unit (an example of first and second heating elements)
423, 424 Fixed position of heating element SP1, SP2 Space

A circulator according to one aspect of the present invention includes a rotating shaft extending in the front-rear direction, an intake port provided on a surface on the rear side in the extending direction of the rotating shaft, and a surface on the front side in the extending direction of the rotating shaft. and a plurality of blades fixed to a rotating shaft, wherein the air outside the housing is sucked into the housing through the air inlet, and the sucked air is sucked into the housing through the air blowing outlet. It comprises a plurality of blades that are sent to the outside of the body, and a heating part that heats the air sucked into the housing from the intake port, and the position of the heating part along the extending direction of the rotating shaft is the extending direction of the rotating shaft. The heating part is fixed to the housing and surrounds the rotating shaft when viewed from the extending direction of the rotating shaft. and each of the first and second heating elements wound around the first and second insulating parts, the first heating element being radially inner than the first insulating part and a portion existing on the outer diameter side of the first insulating portion, and the second heating element includes a portion existing on the inner diameter side of the second insulating portion and the second insulating portion. and a portion existing on the outer diameter side of the portion .
A circulator according to another aspect of the present invention includes a rotating shaft extending in the front-rear direction, an intake port provided on a surface on the rear side in the extending direction of the rotating shaft, and a surface on the front side in the extending direction of the rotating shaft. and a plurality of blades fixed to a rotating shaft, wherein the air outside the housing is sucked into the housing through the air inlet, and the sucked air is sucked into the housing through the air blowing outlet. It comprises a plurality of blades that are sent to the outside of the body, and a heating part that heats the air sucked into the housing from the intake port, and the position of the heating part along the extending direction of the rotating shaft is the extending direction of the rotating shaft. The heating part is fixed to the housing and surrounds the rotating shaft when viewed from the extending direction of the rotating shaft. and each of the first and second heating elements wound around the first and second insulating portions, respectively, when viewed from the extending direction of the rotating shaft, the first and second Each of the heating elements has a portion located radially outward from each of the first and second insulating portions more than a portion located radially inward from each of the first and second insulating portions. long.

Claims (6)

is a circulator,
a rotating shaft extending in the front-rear direction;
a housing including an intake port provided on a rear side surface in the extending direction of the rotating shaft and an air blowing port provided on a front side surface in the extending direction of the rotating shaft;
A plurality of blades fixed to the rotating shaft, wherein the air outside the housing is sucked into the housing through the intake port, and the sucked air is sent to the outside of the housing through the air blowing port. with the feathers of
a heating unit that heats the air sucked into the housing from the intake port,
The position of the heating unit along the extending direction of the rotating shaft is on the front side of the positions of the plurality of blades along the extending direction of the rotating shaft,
The heating unit
each of first and second insulating portions fixed to the housing and surrounding the rotation shaft when viewed from the extending direction of the rotation shaft;
and each of first and second heating elements wound around each of said first and second insulating portions. 2. The circulator according to claim 1, wherein said housing blocks inflow of air from the outside of said housing into said heating section from a direction orthogonal to an extending direction of said rotating shaft of said heating section. 3. The circulator according to claim 1, further comprising a supporting portion fixed to said housing and supporting said first and second insulating portions. When viewed from the direction in which the rotating shaft extends, each of the first and second heat generating elements is located closer to the inner diameter side than each of the first and second insulating portions. 4. The circulator according to any one of claims 1 to 3, wherein the portion existing on the outer diameter side is longer than each of the first and second insulating portions. Claims 1 to 3, wherein the position of the front end of the air inlet along the extending direction of the rotating shaft is on the rear side of the positions of the front ends of the plurality of blades along the extending direction of the rotating shaft. 5. The circulator according to any one of 4. further comprising a rectifying section provided at a position on the front side of the positions of the plurality of blades along the extending direction of the rotating shaft and at a position on the rear side of the heating section,
the rectifying section includes a plurality of guard sections for colliding the air sent from the plurality of blades,
6. The circulator according to any one of claims 1 to 5, wherein each of said plurality of guard portions has an arc shape when viewed from the extending direction of said rotating shaft.

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