JPH05321883A - Electric fan - Google Patents

Abstract

PURPOSE:To uniformize room temperature by carrying out driving control of an electric fan according to the sensing of a heating source. CONSTITUTION:A control circuit 6 enclosed in an electric fan receives an operation signal from a switch circuit 7, on the one hand, it receives a heating source signal from an infrared radiation sensor 4. When the heating source signal is equal to or larger than a prescribed value, the control circuit 6 detects the occurrence of a heating source, and blows air by driving an air blowing motor 10 through an air blowing motor driving circuit 8 according to this detected signal, and oscillates the electric fan by driving a laterally oscillating motor 11 through an oscillating motor driving circuit 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan for controlling a blower motor based on a signal from a heating source detecting sensor.

[0002]

2. Description of the Related Art There are various means for heating a room, but a typical heating source is an air conditioner that also functions as a heater or air conditioner called an electric or oil stove. In the heating means as these heating sources, warm air stays near the ceiling due to buoyancy, and the temperature in the room is uneven. In order to solve this, a means for circulating warm air sent from an air conditioner or the like with a fan is adopted.

[0003]

However, it is not necessary for a fan to constantly blow air in spite of the fact that the temperature in the room is not uneven, and it is troublesome for a person to operate or stop the fan depending on the temperature condition in the room. .. In addition, if the fan is blown by swinging the fan within a certain range, if there is a person in that direction, the wind hits the skin and feels cold, which is uncomfortable.

Therefore, an object of the present invention is to provide a fan that drives the fan according to the condition of a heating source in a room and prevents the human body from being blown with air.

[0005]

According to a first aspect of the present invention, a heating source detection sensor and a control means for driving and controlling a blower motor based on a detection signal detected by the heating source detection sensor are provided. Is.

According to a second aspect of the present invention, a heating source detecting sensor for detecting a human body and a heating source, and driving control of a blower motor of the fan head based on a detection signal of the heating source detecting sensor, and the fan head is provided. A control means for driving and controlling a swing motor for swinging the head to the left and right with respect to the base; a calculating means for calculating the human body direction from the human body detected by the heating source detection sensor; and a direction of the fan head. And a control means for moving and controlling the fan head in a direction avoiding the human body direction by the direction of the fan head detected by the detecting means and the calculated human body direction. Is.

[0007]

According to the invention of claim 1, when the heating source is detected by the heating source detecting sensor, the control means drives and controls the blowing motor to blow the air. As a result, the human is free from the trouble of operating or stopping the fan depending on the presence or absence of the heating source.

When the human body and the heating source are detected by the heating source detection sensor, the direction of the human body is calculated from the detected human body. Then, the direction of the human body and the direction of the fan head of the swing motor that swings the blower motor left and right with respect to the base are detected, and the direction of the human body is avoided from the direction of the fan head and the direction of the human body. The head of the fan moves and blows air. As a result, the wind from the fan does not hit the human body, and there is no discomfort.

[0009]

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

FIG. 1 is an explanatory view in which a fan according to the first embodiment of the present invention is arranged indoors. In the figure, a fan 2 is attached with a base 2 for wall hanging, and the base 2 for wall hanging is fixed to an upper wall surface 3 a of a room 3. An infrared sensor 4 is arranged on the front surface of the base 2 for wall mounting. Here, for example, in the right corner 3b of the room 3, the heating means 5a is arranged as a heating source.

The control means of the fan 1 is constructed as shown in FIG. 2, and the switch circuit 7 and the infrared sensor 4 are connected to the control circuit 6, while the blower motor drive circuit 8 and the swing motor drive circuit are connected. 9 is connected. Further, a blower motor 10 is connected to the blower motor drive circuit 8, and a left and right swing motor 11 is connected to the swing motor drive circuit 9.

Here, the processing of the control circuit 6 having the above configuration will be described with reference to FIG.

First, when the switch circuit 7 shown in FIG. 2 is operated for automatic operation, the presence or absence of the heating source 5b is detected by the signal from the infrared sensor 4. That is, the room 3 is
As shown in FIG. 1, when the heating means 5a starts heating and the heating source 5b is generated, the infrared sensor 4 senses the heating source from the heating source 5b in the direction of the broken line in FIG.

The control circuit 6 determines whether or not the heating source 5b is detected when the signal value of the infrared sensor 4 is a predetermined value or more (determination 1). In this case, it is determined whether or not the heating source 5b has disappeared or moved within 5 minutes in order to prevent erroneous detection due to a cigarette, a writer, or the like (decision 2).

If the heating source 5b does not disappear within 5 minutes in this determination, the control circuit 6 outputs a drive signal to the blower motor drive circuit 8. As a result, the blower motor 10 rotates at the lowest speed to blow air into the room 3, and the swinging motor driving circuit 9 causes the left and right swinging motors 11 to swing to circulate the air in the room 3.

After that, when the temperature of the room 3 rises and the heating means 5a is stopped, the heating source 5b disappears, the signal of the infrared sensor 4 correspondingly decreases, and the control circuit 6 causes the heating source 5b to disappear. Judgment is made (decision 3). Then, the blower motor drive circuit 8 stops driving the blower motor 10 (process 2).

As described above, since the infrared sensor 4 senses the heating source 5b in the room 3 to rotate the fan of the fan 1, it is not necessary for a person to operate or stop the fan depending on the presence or absence of the heating source 5b in the room 3. Efficient and comfortable temperature can always be maintained.

In the present embodiment, the example using the infrared sensor 4 has been described, but an ultraviolet sensor for detecting ultraviolet rays generated during combustion can be used in the same manner. Further, in the present embodiment, the heating means is arranged on the floor surface of the room, but the same can be applied to the case of a wall-mounted air conditioner or the like.

FIG. 4 is a vertical sectional view of a fan head showing a second embodiment of the present invention, FIG. 5 is a vertical sectional view seen from the other direction of the fan head, and FIG. 6 is a horizontal cross section of the fan head. 7 and 8 are exploded perspective views of the relevant part.

The mechanism of the fan 1 of this embodiment will be described with reference to FIGS. 4 to 7. Reference numeral 15 is a neck piece that is pivotally supported by a forked portion 17 on the upper part of the pillar 16 so as to be freely tilted.
A boss 21 and a bearing portion 20 for rotatably supporting a cylindrical portion 19 of a swing center adjusting body 18, which will be described later, are integrally formed.

Reference numeral 11 denotes a left and right swing motor housed in the neck piece 15, which is composed of a synchronous motor which rotates only in one direction, and is fixed to the boss 21 by screws. Reference numeral 22 denotes a cam plate which is mounted on the output shaft 23 of the left and right swing motor 11 so as not to rotate. An eccentric portion 24 is integrally formed on the lower surface, and a shielding wall 25 is integrally formed on the outer periphery in a semicircular shape upward. ing. Reference numeral 26 is a drive link for loosely fitting a ring portion 27 formed at one end into an eccentric portion 24 of the cam plate 22, and has a shaft hole 29 at the other end for loosely fitting a lower eccentric portion 28 of a swing center adjusting body 18, which will be described later. Is forming.

Reference numeral 18 denotes a swing center adjusting body for supporting a pivot 31 of a fan head 30 which will be described later, and a cylindrical portion 19 which is loosely fitted and supported by the bearing portion 20 of the neck piece 15, and this cylindrical portion 19
A lower eccentric portion 28 protruding downward at an eccentric position and loosely fitted and supporting the shaft hole 29 of the drive link 26, and an upper position protruding above the lower eccentric portion 28.
It has an upper eccentric portion 35 that loosely fits and supports an insertion hole 34 of a swing link 33, which will be described later, and an insertion hole 36 that inserts a power cord (not shown).

When the left / right swing motor 11 is driven, the cam plate 22 rotates, and the rotation of the cam plate 22 causes the drive link 26 to move to the bearing portion 20 of the neck piece 15.
On the other hand, the swing center adjusting body 18 is swung. At this time, since the swing center moving motor 13 built in the fan head 30 described later is connected to the swing center adjusting body 18 via the swing link 33, the swing center moving motor 13 is not driven. The fan head 30 is integrated with the swing center adjuster 18, and the fan head 30 swings left and right as the swing center adjuster 18 moves in the left-right direction.

Reference numeral 37 denotes a lid which covers the upper opening of the neck piece 15 and is equipped with a head position detecting sensor 38 for detecting the direction of the fan head 30 which will be described later. Is composed of an optical sensor including a light emitting element 39 and a light receiving element 40. The head position detecting sensor 38 causes the light emitting element 3 to rotate when the cam plate 22 rotates.
9 and the light receiving element 40 between the shield wall 25 of the cam plate 22.
Is arranged so as to pass therethrough, and the rotational position of the cam plate 22, that is, the direction of the fan head 30 with respect to the base (not shown) is detected by the change in the amount of light received by the light receiving element 40 by the shielding wall 25. There is. That is, when the end of the shielding wall 25 passes between the light emitting element 39 and the light receiving element 40, the fan head 30 is moved to the right or left with respect to the base due to a change in the amount of light received by the light receiving element 40. It is designed to determine whether or not it is located at the swing limit. The light receiving element 40 is arranged inside the shielding wall 25 so that the light receiving element 40 receives the external light as much as possible.

Next, the fan head 30 will be described.
Is a blower motor having a pivot 31 that is inserted into the swing center adjuster 18 and is supported by loose fitting, and a blower fan 42 is detachably attached to the output shaft 41. 43
Is a front cover that covers the front part of the blower motor 10, and a guard 44 surrounding the blower fan 42 is detachably attached.

Reference numeral 45 is a mounting plate mounted on the rear portion of the blower motor 10, and has a bent portion 46 formed at the rear end. Thirteen
Is a swing center moving motor mounted on the upper surface of the mounting plate 45, and is constituted by a reversible synchronous motor that switches between forward and reverse rotation by switching energization. 47 is a swing center movement motor 13
The cam is mounted on the output shaft of the above, and the gear 48 is integrally formed on the upper portion and the eccentric shaft 49 is integrally formed on the lower surface.

Reference numeral 50 denotes a swing center position detecting sensor mounted on the mounting plate 45, which is composed of a variable resistor for varying the output voltage by rotating the shaft, and the shaft meshes with the gear 48 of the cam 47. The gear 51 is attached. The gear 51 is formed in a semicircular shape, and prevents the swing center position detection sensor 50 from being excessively rotated and damaged when the swing center moving motor 13 is rotated in a rotation range or more. It is like this.

Reference numeral 33 is a swinging link in which an insertion hole 52 formed at one end is loosely fitted to an eccentric shaft 49 of the cam 47, and an insertion hole 34 formed at the other end is an upper eccentric portion of the swing center adjusting body 18. It fits loosely in 35.

When the swing center moving motor 13 is driven, the cam 47 rotates, and the rotation of the cam 47 causes the swing link 33 to move the swing center adjusting body 18 to the swing motor 10.
The pivot 31 of the fan is rotated to move the center of swing of the fan head 30. At this time, the swing center adjusting body 18
Is connected to the left and right swing motor 11 via the drive link 26, the swing center adjusting body 18 is the neck piece 15, that is, when the left and right swing motor 11 is stopped.
Since it is integrated with the base, the swing center adjustment body 18 does not move,
The pivot 31 of the fan head 30 rotates in the left-right direction with respect to the swing center adjuster 18, and the swing center of the fan head 30 moves.

Reference numeral 53 is a drive capacitor for the blower motor 10, 54 is a rear cover that covers the blower motor 10, the swing center movement motor 13, the swing center position detection sensor 50, etc., and the front end portion is the front cover 43. , And the rear portion is fixed to the bent portion 46 of the mounting plate 45 by screwing.

The second embodiment using the fan 1 having the above-mentioned mechanism is different from the first embodiment in that, when a human body is present in the air blowing direction of the fan, the air is blown while avoiding the human body direction. .. The fan 1 has the same arrangement as that described with reference to FIG.

FIG. 8 is a block diagram of the control means according to the second embodiment. The difference from the control means of the first embodiment shown in FIG. 2 is that the swing center moving motor drive circuit 12 and the swing center moving motor 1 are different.
3 and 3 are provided.

Next, the processing procedure of the control means will be described with reference to FIG. 9. First, in the control circuit 6 shown in FIG. 8, when an automatic operation signal is input from the switch circuit 7, the infrared sensor 4 outputs the signal. The presence / absence of the heating source 5b is determined.
At this time, as shown in FIG. 1, when the heating source 5b is present and the value of the signal of the infrared sensor 4 is equal to or more than a predetermined value, the control circuit 6 detects the presence of the heating source 5b (decision 1).

Then, it is judged whether the heating source 5b has disappeared or moved within 5 minutes (judgment 2). If the heating source 5b is still present in this determination, the direction of the human body is detected (process 1). This is performed by, for example, pre-storing the signal level of the infrared sensor 4 of the heating source and determining whether the heating source or the human body. Further, the infrared sensor 4 is provided with, for example, a plurality of detection elements, detects infrared rays from a wide-angle direction, and detects the direction of the human body based on the infrared rays.

Next, the direction of the swing center of the fan is detected (process 2). The detection of the swing center direction is detected by the swing center position detection sensor 50 synchronized with the cam 47 of the swing center moving motor 13 (Process 2). As a result, based on the detected swing center direction and the human body direction, the swing center moving motor drive circuit 12 is moved in a direction avoiding the human body direction.
The swing center moving motor 13 moves the swing center direction via (step 3).

When the movement in the swing center direction is completed, the blower motor 10 is driven at the lowest speed, and the left and right swing motors 11 swing left and right (process 4). As a result, the air is blown away from the direction of the human body, and the temperature inside the room is gradually made uniform. When the heating source 5b in the room 3 disappears and the signal from the infrared sensor 4 falls below a predetermined value, the blower motor 10
Is stopped (judgment 3).

In this embodiment, the swing center moving motor 13 is controlled based on the detection of the swing center position detection sensor 50 and the direction of the human body to avoid blowing air toward the human body. Based on the detection of the head position detection sensor 38 and the head position detection sensor 38, it is possible to avoid blowing air toward the human body. Further, the heating source 5b and the human body may be detected not by the same infrared sensor but by individually providing an infrared sensor.

As described above, in the present embodiment, the infrared sensor drives and controls the fan based on the presence / absence of the heating source to circulate the indoor air, while avoiding the direction of the human body and oscillating, so that the human body is directly exposed to the cold wind. The indoor temperature can be made comfortable and uniform.

[0039]

As described above, according to the invention of claim 1, the blower motor is driven and controlled by the control means depending on the presence or absence of the heating source, so that the fan is artificially operated or stopped depending on the presence or absence of the heating source. The trouble can be eliminated.

Further, according to the second aspect of the invention, since the fan head moves away from the direction of the human body, there is no discomfort due to air being blown toward the human body, and the indoor temperature becomes comfortable.

[Brief description of drawings]

FIG. 1 is an explanatory diagram in which a fan according to a first embodiment of the present invention is arranged indoors.

FIG. 2 is a configuration diagram showing a control means of the electric fan of FIG.

FIG. 3 is a flowchart showing a processing procedure of the control means in FIG.

FIG. 4 is a vertical sectional view of a fan head showing a second embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view seen from another direction of the fan head.

FIG. 6 is a cross-sectional view of the head of the fan.

FIG. 7 is an exploded perspective view of the same main part.

FIG. 8 is a configuration diagram of control means of a fan showing a second embodiment of the present invention.

9 is a flowchart showing a processing procedure of the control means in FIG.

[Explanation of symbols]

 1 Fan 2 Wall Mount Base 3 Indoor 4 Infrared Sensor 5b Heating Source 6 Control Circuit 7 Switch Circuit 8 Blower Motor Drive Circuit 9 Swing Motor Drive Circuit 10 Blower Motor 11 Left / Right Swing Motor 12 Swing Center Moving Motor Drive Circuit 13 Swing center movement motor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F04D 25/10 302 K F24F 11/04 G

Claims (2)

[Claims] 1. An electric fan, comprising: a heating source detection sensor; and control means for driving and controlling a blower motor based on a detection signal detected by the heating source detection sensor. 2. A heating source detection sensor for detecting a human body and a heating source, and driving control of a blower motor of the fan head based on a detection signal of the heating source detection sensor, and the fan head with respect to a base. Control means for driving and controlling a swing motor for swinging to the left and right, a calculating means for calculating a human body direction from a human body detected by the heating source detection sensor, and a detecting means for detecting a direction of the fan head. An electric fan comprising: a control unit that controls the movement of the electric fan head in a direction avoiding the human body direction based on the direction of the electric fan head detected by the detection unit and the calculated human body direction.