JP2011122550A - Electric fan - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric fan capable of controlling the blowing so as to suit needs of many people in compliance with the sultriness. <P>SOLUTION: The electric fan 1 is equipped with a temperature sensor 41 as a temperature detector, a humidity sensor 42 as a humidity detector, and a control part 55 which calculates the discomfort index from the temperature given by the temperature sensor 41 and the humidity given by the humidity sensor 42 so as to control the wind quantity on the basis of the obtained discomfort index. The control part 55 is equipped with a plurality of mode control parts 64-66 and performs the control of wind quantity in several types in accordance with the user's manner of sensing the hotness. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fan provided with a temperature detector.

  As this type of electric fan, for example, Patent Document 1 discloses one in which a control unit controls air blowing based on a temperature detected by a detection body.

JP-A-5-164088

  However, simply controlling the air flow based on temperature cannot cope with an appropriate air flow when a person feels muggy.

  Then, this invention makes it the 1st objective to provide the electric fan corresponding to the heat of heat.

  Moreover, this invention makes it the 2nd objective to provide the electric fan which can control the ventilation adapted to the demand of many people.

  In the electric fan according to the first aspect of the present invention, it is possible to control the ventilation suitable for the sultry heat felt by the person based on the discomfort index in consideration of the temperature and the humidity, instead of simply controlling the ventilation by the temperature.

  In the electric fan according to claim 2 of the present invention, there are various ways of feeling the heat depending on the person, and since one type of air blowing control cannot cope with how many people feel the heat, there are a plurality of air blow control levels. By providing, it becomes possible to control the air flow adapted to the demands of many people who have various needs for heat.

  According to the invention of claim 1, it is possible to provide a fan that can cope with the heat of steam.

  According to invention of Claim 2, the electric fan which can control the ventilation suitable for many people's demands can be provided.

It is a whole side view of the electric fan which shows one example of the present invention. It is a longitudinal cross-sectional view of the principal part same as the above. It is a top view of an attached remote control same as the above. It is a block diagram which shows an electrical structure same as the above. It is explanatory drawing which showed the discomfort index induced | guided | derived from room temperature and humidity same as the above. It is explanatory drawing which shows an example of air volume control same as the above. It is explanatory drawing which shows an example of the air volume control in a modified example same as the above.

  Hereinafter, preferred embodiments of the electric fan according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 to FIG. 6 show an embodiment of the present invention. First, the overall configuration will be described with reference to FIG. 1. A fan 1 equipped with a blower 2 for sending out wind is also provided on the floor surface. A base 3 as a base to be placed and a support column 4 as a support portion standing on the base 3 are provided, and an air blower 2 is provided at the upper end of the support column 4 so as to be able to swing up and down and swing. It has been. A detachable remote controller 5 is provided on the upper surface of the base 3 so as to be positioned in front of the support column 4.

  The support column 4 constitutes an elevating device for moving the blower 2 up and down, and a support column base 6 having a lower end fixed to the base 3 and a slide pipe assembled inside the support column base 6 so as to be vertically slidable. The blower 2 is provided at the upper end portion of the slide pipe 7 projecting upward from the support base 6. Although not shown, the air blower 2 includes a head 11 with a built-in swing mechanism and an electric motor, a fan 12 as a blade that is rotationally driven by the electric motor in the head 11, and a detachable covering the fan 12. It is constituted by a wire mesh guard portion 13. Reference numeral 14 denotes a handle for facilitating carrying of the electric fan 1, which is attached to the upper side of the head 11 supported by the upper end of the support 4.

  The structure of the column 4 will be further described with reference to FIG. 2. The column base 6 is pipe-shaped and has a base mounting portion 21 fixed to the base 3 at the lower end. On the other hand, a cylindrical cap 22 is fitted and fixed to the upper end portion of the support base 6. The cap 22 is made of a material such as plastic having elasticity. A flange 23 is provided at the lower end of the slide pipe 7 which is located in the column base 6 and is movable up and down. On the other hand, on the upper part of the inner peripheral surface of the column base 6, the flange 23 is located below. A stopper projection 24 is formed so as to project from the projection. Thereby, the slide pipe 7 is prevented from coming off from the support base 6. Further, a spring-shaped spring body 26 is provided at the lower end portion of the slide pipe 7. Thereby, the slide pipe 7 is urged upward with respect to the support base 6 by an urging force balanced with the weight including the blower 2.

  Further, a concave groove 31 is formed on the outer peripheral surface of the slide pipe 7 along the vertical direction which is the longitudinal direction thereof. Then, on the inner surface in the groove 31, there are formed engaging recesses 32 as a plurality of engaging receiving portions arranged in the vertical direction. On the other hand, the cap 22 has, on one side, a lock button assembly portion 34 for assembling a lock button 33 that forms a locking means operated by a user. The lock button assembly portion 34 is formed in a substantially concave groove shape, and the lock button 33 is fitted so as to be slidable up and down within a predetermined range. Further, a through hole 36 is formed in the outer wall portion 35 of the lock button assembling portion 34, and a finger hook portion 37 formed by protruding upward on the lock button 33 to the side passes through the through hole 36. It protrudes outward. An elastic piece 38 is integrally formed on the cap 22 at a position inside the lock button assembly 34 so as to hang downward from its upper end. The elastic piece 38 faces the outer wall 35 and is elastically deformed in a direction toward and away from the outer wall 35 and is slidably fitted in the groove 31 of the slide pipe 7. To match. The lock button 33 is sandwiched between the outer wall portion 35 and the elastic piece portion 38. Further, an engaging portion 39 made of a protrusion is integrally formed on the surface of the lower end portion of the elastic piece portion 38 on the side opposite to the lock button 33. The engaging portion 39 is elastically engaged with the engaging recesses 32 of the slide pipe 7 in an elastic manner as the elastic piece portion 38 is elastically deformed. Further, as shown in FIG. 2, the lock button 33 is positioned so as to be sandwiched between the back side of the engaging portion 39 of the elastic piece portion 38 and the outer wall portion 35 while being lowered with respect to the cap 22. As a result, the elastic piece portion 38 cannot be elastically deformed, and the engagement portion 39 is kept engaged with the engagement recess 32 of the slide pipe 7. On the other hand, although not shown, when the lock button 33 is raised with respect to the cap 22, the lock button 33 is disengaged from the position behind the engaging portion 39 in the elastic piece portion 38, and the elastic piece portion 38 is elastically deformed. As a result, the engaging portion 39 can be disengaged from the engaging recess 32.

  A temperature sensor 41 as a temperature detection body and a humidity sensor 42 as a humidity detection body are disposed on the upper front portion of the support base 6 while being covered with a common outer shell 43. The temperature sensor 41 detects the temperature around the fan 1 and outputs an electrical temperature detection signal. The humidity sensor 42 detects the humidity around the fan 1 and outputs an electrical humidity detection signal. However, in order to suppress the influence of the wind generated when the fan 12 rotates, it is provided at a position away from the fan 12 so that the temperature and humidity in the room can be detected instead of the floor surface. It is arranged at a predetermined height from the floor surface.

  FIG. 3 is a diagram showing the remote controller 5. The remote controller 5 has an operation panel 47 having a plurality of operation keys 46A to 46F on the upper surface of a main body 45 having a flat shape, and by pressing each operation key 46A to 46F, an operation signal corresponding thereto. Is transmitted wirelessly from a transmitter 48 such as an infrared light emitting element provided in front of the main body 45. Here, a driving operation key 46A that is operated to start or stop the operation of the electric fan 1, a timer operation key 46B that is operated during a timer operation, and a swing that is operated to cause the operating body 2 to swing. In addition to the operation key 46C, a hot operation key 46D operated when a person who feels hotter than usual selects a hot mode, and a cold operated by a person who feels colder than normal operates when selecting a cold mode. A garment operation key 46E and a normal operation key 46F that are operated when a normal heat sensation person selects the normal mode are individually provided.

  In this embodiment, the operation panel 47 is provided on the remote-controllable remote controller 5 in consideration of the user's convenience. However, for example, the operation panel 47 may be provided on the upper surface of the base 3. Also, the arrangement of the operation keys 46A to 46F shown in FIG. 3 is merely an example. For example, the operation keys 46A to 46F are hot and cold, and normal operation keys are combined into one. You may comprise so that each normal mode may switch.

  FIG. 4 is a diagram showing an electrical configuration. In the figure, 46 is an operation unit constituting the operation keys 46A to 46F, and 51 is a receiving unit provided on the base 3 for receiving an operation signal radiated from the transmission unit 48 of the remote controller 5. In addition to the temperature sensor 41 and the humidity sensor 42 described above, the base 3 receives the operation signal received by the receiving unit 51, the temperature detection signal from the temperature sensor 41, and the humidity detection signal from the humidity sensor 42, A drive signal is sent to a fan rotation motor 52 that is an electric motor provided in the blower body 2 and a swing mechanism portion 53 that swings the blower body 2 with respect to the support column 4, and the fan rotation motor 52 and the swing mechanism portion. A control unit 55 for controlling 53 is incorporated.

  In particular, in this embodiment, as a functional configuration of the control unit 55, a discomfort index calculation unit that calculates a discomfort index around the electric fan 1 by inputting a temperature detection signal from the temperature sensor 41 and a humidity detection signal from the humidity sensor 42. 61 and the discomfort index calculated by the discomfort index calculation unit 61 determine operations such as the rotational speed of the fan rotation motor 52, operation time and stop time, and finally control the air volume from the blower 2 An air volume control unit 62. Further, the air volume control unit 62 here includes a first mode control unit 64 that controls the air volume from the blower 2 when the first heat mode is selected by an operation signal from the remote controller 5, and a second mode control unit 64. A second mode control unit 65 that controls the air volume from the blower 2 when the cold mode is selected, and a third mode control that controls the air volume from the blower 2 when the third normal mode is selected. The air volume control unit 62 includes any one of the first mode control unit 64, the second mode control unit 65, and the third mode control unit 66 based on the discomfort index calculated by the discomfort index calculation unit 61. Is configured to run.

  Here, the three mode control units 64 to 66 correspond to normal, hot, and cold modes, but the number of mode control units 64 to 66 may be more or less than this. I do not care.

  Next, the effect | action is demonstrated about the said structure. In order to start the operation as the electric fan 1, when the operation key 46A of the remote controller 5 is pushed and an operation signal indicating that is transmitted from the transmitter 48 of the remote controller 5 to the receiver 51 of the base 3, The discomfort index calculation part 61 of the part 55 takes in the temperature detection signal from the temperature sensor 41 and the humidity detection signal from the humidity sensor 42, respectively, and calculates the discomfort index around the electric fan 1. Here, assuming that the temperature obtained from the temperature detection signal is T (° C.) and the humidity obtained from the humidity detection signal is H (%), the discomfort index calculation unit 61 calculates the discomfort index DI by the following equation.

  When the discomfort index calculating unit 61 calculates the discomfort index DI, the air volume control unit 62 increases the rotational speed of the fan rotation motor 52 as the discomfort index DI increases, so that the air volume from the blower unit 2 increases. The rotary motor 52 is controlled. On the contrary, the air volume control unit 62 controls the fan rotation motor 52 so that the air volume from the blower unit 2 is decreased by decreasing the rotational speed of the fan rotation motor 52 as the discomfort index DI is lower.

  FIG. 5 shows the discomfort index derived from the room temperature and humidity, which are the temperatures around the electric fan 1, and shows that even the same room temperature feels hot and uncomfortable as the humidity increases. Here, when the discomfort index exceeds 85, it feels "I'm hot" and when the discomfort index exceeds 85 when it is less than 85, it feels "hot and sweats", and when the discomfort index is 80 or less, it is 75. When it exceeds, it feels “slightly hot”, when the discomfort index is 75 or less and exceeds 70, it feels “not hot”, when the discomfort index is 70 or less and exceeds 65, it feels “pleasant”, and the discomfort index Is 65 or less and feels "I don't feel anything". Therefore, the air volume control unit 62 is provided in the air blowing unit 2 so as to increase the air volume from the air blowing unit 2 when the discomfort index is high, while decreasing the air volume from the air blowing unit 2 when the discomfort index is low. The operation of the fan rotation motor 52 thus controlled can be controlled to make the air volume more suitable for the steaming heat felt by people.

  FIG. 6 is an explanatory diagram showing an example of air volume control of the electric fan 1 based on the discomfort index. As described above, the air volume control unit 62 according to the present embodiment includes the first mode control unit 64, the second mode control unit 65, and the third mode control unit 66 that are different in control of the fan rotation motor 52. Here, when the hot mode key 46D of the remote controller 5 is pressed to select the hot mode, the first mode control unit 64 controls the hot mode. Specifically, when the discomfort index calculated by the discomfort index calculation unit 61 exceeds 85 and it is felt that it is “hot and unbearable”, the first control unit 64 operates in the “strong” operation mode and the fan rotation motor. 52, when the discomfort index is 85 or less and exceeds 80 and feels "hot and sweaty", the first control unit 64 controls the fan rotation motor 52 in the "medium" operation mode, and the discomfort index Is 80 or less and exceeds 75 and feels “slightly hot”, the first control unit 64 controls the fan rotation motor 52 in the operation mode of “medium rhythm”, the discomfort index is 75 or less and exceeds 70, When the first control unit 64 controls the fan rotation motor 52 in the “weak rhythm” operation mode when feeling “not hot”, and when the discomfort index is 70 or less and exceeds 65, it feels “pleasant”. The first controller 64 operates “slowly” And it controls the fan rotation motor 52 over de, if the discomfort index feel "not feel anything" in 65 or less, the first control unit 64 controls the fan rotation motor 52 in the operation mode "stop".

  Further, when the normal mode is selected by pressing the heat operation key 46F of the remote controller 5, the normal control by the third mode control unit 66 is performed. Specifically, when the discomfort index exceeds 85 and it is felt that it is “hot and unbearable”, the third controller 66 controls the fan rotation motor 52 in the “medium” operation mode, and the discomfort index is 85. The third control unit 66 controls the fan rotation motor 52 in the operation mode of “medium rhythm” when the temperature exceeds 80 below and “feels hot and sweaty”, the discomfort index is 80 or less and exceeds 75, When the third control unit 66 controls the fan rotation motor 52 in the “weak” operation mode when it feels “slightly hot”, the discomfort index is 75 or less and exceeds 70, and when it feels “not hot”, When the third control unit 66 controls the fan rotation motor 52 in the “slow” operation mode and the discomfort index is 70 or less and exceeds 65, and the “discomfort index” is 65 or less, “nothing is felt” The third control unit 6 There controlling the fan rotation motor 52 in the operation mode "stop".

  Furthermore, when the hot operation key 46E of the remote controller 5 is pushed to select the cold mode, normal control by the second mode control unit 65 is performed. Specifically, when the discomfort index exceeds 85 and it is felt that it is “hot and unbearable”, the second control unit 65 controls the fan rotation motor 52 in the “weak” operation mode, and the discomfort index is 85. The second control unit 65 controls the fan rotation motor 52 in the “weak rhythm” operation mode when the temperature exceeds 80 and feels “hot and sweaty”, and the discomfort index is 80 or less and exceeds 75. When feeling “slightly hot”, the second control unit 65 controls the fan rotation motor 52 in the “slow” operation mode, the discomfort index is 75 or less and exceeds 70, and it feels “not hot” When the discomfort index is 70 or less and exceeds 65 and feels “pleasant”, or when the discomfort index is 65 or less and “feels nothing”, the second control unit 65 operates in the “stop” operation mode. The rotary motor 52 is controlled.

  In the above description, the air volume of the air blower 2 decreases in the order of “strong” → “medium” → “medium rhythm” → “weak” → “weak rhythm” → “slow” → “stop”. “High”, “medium”, “weak”, and “slow” are all modes in which the fan rotation motor 52 is continuously operated, and “strong” is a mode in which the fan rotation motor 52 is continuously operated at a rotation speed of 1120 rpm. "" Causes the fan rotation motor 52 to continuously operate at a rotation speed of 960 rpm, "weak" causes the fan rotation motor 52 to continuously operate at a rotation speed of 600 rpm, and "slow" continuously operates the fan rotation motor 52 at a rotation speed of 400 rpm. Let Also, “medium rhythm” and “weak rhythm” are modes in which the fan rotation motor 52 is periodically switched to perform rhythm operation, and “medium rhythm” is the rotation speed of the “medium”. The operation is performed for 4 seconds, and the operation of operating the fan rotation motor 52 for 1 second at the “weak” rotation number is repeated. The “weak rhythm” is the operation of the fan rotation motor 52 for 1 second at the “medium” rotation number, The fan rotation motor 52 is operated for 3 seconds at the “weak” rotation speed, and the operation of stopping the rotation motor 52 for 3 seconds is repeated. Further, “stop” is a mode in which the operation of the fan rotation motor 52 is stopped.

  In this way, based on the discomfort index calculated by the discomfort index calculation unit 61, the air volume control unit 62 performs control corresponding to each of heat, normal, and cold, instead of a single type of control, so It becomes possible to provide an air volume that considers people and hot people.

  As described above, the electric fan 1 according to the present embodiment includes the temperature sensor 41 as the temperature detection body and the humidity sensor 42 as the humidity detection body, and the temperature detected by the temperature sensor 41 and the humidity sensor 42 are detected. A control unit 55 is provided that calculates a discomfort index from the humidity and controls the air flow, that is, the air volume based on the discomfort index.

  Accordingly, it is possible to control the air volume suitable for the heat and heat felt by a person based on the discomfort index in consideration of temperature and humidity, rather than simply controlling the air volume based on temperature.

  Moreover, the control part 55 of a present Example is provided with several mode control parts 64-66, and provided with multiple types of control of the air volume according to how a user feels the heat.

  There are various ways of feeling heat depending on the person, and since one type of airflow control cannot cope with how many people feel the heat, the control unit 11 provides multiple types of airflow control levels, so This makes it possible to control the air flow adapted to the demands of many people who have various needs especially for mitigation.

  Next, another modification will be described with reference to FIG. In this modification, in order to consider not only the room temperature, which is the temperature around the electric fan 1, but also the individual heat interval of the electric fan 1, as a means for controlling the air volume, different configurations from the above-described embodiment are as follows. Have

  The operation unit 46 of the remote controller 5 is provided with an air volume switching key for switching an air volume suitable for the user. The operation unit 46 may be provided on the base 3.

  The air volume control unit 62 includes a storage unit that takes in the temperature detection signal from the temperature sensor 41 and stores the temperature at the time when the operation of the electric fan 1 is started as an initial room temperature, and stores this in the storage unit. When the actual temperature obtained by taking the temperature detection signal of the temperature sensor 41 rises above a certain value with the initial room temperature as a reference, the operation of the fan rotation motor 52 is controlled so as to increase the air volume more than before. When the actual temperature drops below a certain value, the function of controlling the operation of the fan rotation motor 52 is provided so as to reduce the air volume than before.

  The electric fan 1 measures the room temperature using the temperature sensor 41 during operation. At that time, the user selects the air volume suitable for himself by pressing the air volume switching key in consideration of the distance to the fan 1 and the like. The air volume control unit 62 performs steps in the order of, for example, weak, medium, strong, weak,..., Every time the receiving unit 51 receives an operation signal generated by pressing the air volume switching key. The fan rotation motor 52 is controlled so as to be switched automatically. However, since the temperature in the room where the electric fan 1 is used rises and falls over time, it is necessary to increase the air volume when the room temperature rises and decrease the air volume when the room temperature decreases.

  In this regard, the conventional electric fan is a control recorded in advance in a microcomputer that is a control unit of the electric fan, such as a low air flow rate at a room temperature of 25 ° C. and a medium air flow rate at a room temperature of 30 ° C. The way of feeling was not considered. In addition, the distance between the user and the fan is not taken into consideration, and it cannot be said that the air flow is controlled to an appropriate air volume in the original sense, and there is a need for a fan that enables air volume control corresponding to the heat that is individually felt. It was done.

  However, in this modification, the initial room temperature at the time of starting the operation of the electric fan 1 is stored, and the actual temperature obtained from the temperature detection signal of the temperature sensor 41 rises above a certain value with respect to the initial room temperature. In this case, the operation of the fan rotation motor 52 is controlled so as to increase the air volume more than before, and when the actual temperature falls below a certain value, the fan rotation motor is configured so as to reduce the air volume more than before. 52 operations can be controlled.

  FIG. 7 shows an example of such air volume control. Here, it is assumed that the initial room temperature at the start of the operation of the electric fan 1 is 30 ° C. when the user selects the “medium” air volume with the air volume switching key. When the actual temperature rises to 3 ° C. or more with respect to the initial room temperature based on the initial room temperature of 30 ° C., the air volume control unit 62 increases the air volume of the blower 2 to a “strong” air volume, and conversely, When the temperature falls below 3 ° C. with respect to the initial room temperature, the operation of the fan rotation motor 52 is controlled so that the air volume of the blower 2 is lowered to a “weak” air volume. When the temperature falls below 6 ° C. with respect to the initial room temperature, the air volume of the blower 2 is further lowered to “stop” the operation of the fan rotation motor 52.

  Thus, in this modification, the electric fan 1 is provided with the temperature sensor 41 as a temperature detection body, and the temperature sensor 41 measures the initial room temperature (initial temperature) measured at the start of operation, and the operation mode operated at that time. Is used as a reference, and an air volume control unit 62 that controls the air volume of the blower 2 by the actual temperature rise and fall is provided.

  With such a configuration, the air flow control unit 62 controls the air flow to an appropriate air flow without making troublesome settings in consideration of the heat felt by the individual and the distance from the electric fan, as well as control based on the absolute value of the room temperature. It is possible to realize air volume control corresponding to various needs for heat mitigation.

  In addition, when the actual temperature falls below a predetermined value, the air volume control unit 62 is configured to automatically stop the air blowing operation from the air blower 2, so that the effect on health due to overcooling is configured. In addition, it is possible to provide the electric fan 1 effective for energy saving without performing unnecessary operation.

  In addition, this invention is not limited to the said Example, It can change in the range which does not deviate from the meaning of this invention. In the above description, the numerical values of temperature, humidity, discomfort index, rotation speed, and time are merely examples of predetermined values, and may be changed as appropriate according to the specifications of the electric fan. Also, modes relating to control and operation are not limited to those described in the embodiments.

41 Temperature sensor (temperature detector)
42 Humidity sensor (humidity detector)
55 Control unit

Claims (2)

It has a temperature detector and a humidity detector,
An electric fan comprising a controller that calculates a discomfort index from the temperature detected by the temperature detector and the humidity detected by the humidity detector, and controls air flow based on the discomfort index. The electric fan according to claim 1, wherein the control unit is provided with a plurality of types of control of the air blowing.

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