JP2006010626A - Anemometer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely restrain an operation failure caused by freezing. <P>SOLUTION: This anemometer provided with a sensing part provided with a propeller part rotated in response to a wind velocity, and a fixing part for fixing the sensing part in an installation place via a flange part is provided with a hot air generation means 6 arranged inside the flange part 3 to feed hot air obtained by heating outside air introduced from an outside of the flange part 3, toward the sensitive part, and a flow passage of the hot air formed inside the sensing part. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an anemometer.

Conventionally, in order to measure the wind direction and the wind speed, an anemometer including a propeller unit that rotates in accordance with the wind speed has been used. Such an anemometer is devised to reduce the rotational resistance of the propeller portion as much as possible in order to accurately measure the wind speed even in a slight wind.
However, in an anemometer that is arranged in cold regions, etc., even if such an anemometer with reduced rotational resistance is used, the rotational resistance of the propeller part increases due to freezing, and further the propeller part There was a case where it was impossible to rotate. In such a case, naturally, it is impossible to measure an accurate wind direction and wind speed.

For this reason, in the conventional anemometer, when used in a cold region or the like, a hot air generating means is installed outside, and the warm air obtained by this hot air generating means is used as a sensitive part provided with a propeller part. And the inside of the flange portion disposed between the sensing portion and the fixing portion for fixing the sensing portion with respect to the installation location, and the hot air introduced into the inside of the flange portion is caused to flow through a flow path formed in the sensing portion. By doing so, the sensitive part is heated. And the malfunctioning by freezing can be suppressed by heating a sensitive part by warm air in this way.
JP 2001-221809 A Japanese Utility Model Publication No. 6-35182

However, warm air for heating the sensitive part is introduced into the flange part through the introduction hose. Since the introduction hose is connected to the warm air generating means and the flange portion, the arrangement place is in the cold outside air. For this reason, the warm air obtained by the warm air generating means is cooled in the process of flowing through the introduction hose, and the sensitive part may not be sufficiently heated. In such a case, it is difficult to reliably prevent malfunction due to freezing.
On the other hand, when the temperature of the warm air introduced into the flange portion through the introduction hose is sufficiently secured, it is necessary to increase the output of the heater portion provided in the warm air generating means. In addition to this, when hot air is introduced into the flange portion via the introduction hose, the pressure loss is large, so that it is necessary to install a fan with a large output in the hot air generating means. When a heater unit or fan having such a large output is installed, power consumption increases, which is not preferable.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to more reliably suppress malfunctions due to freezing.

  In order to achieve the above object, in the present invention, as a first means, a sensing part having a propeller part that rotates according to the wind speed, and a fixing part that fixes the sensing part to an installation location via a flange part An anemometer including the warm air that is arranged inside the flange portion and blows warm air, which is obtained by heating the outside air introduced from the outside of the flange portion, toward the sensitive portion A configuration is adopted in which the generating means and the warm air flow path formed in the sensing part are provided.

  As a second means, in the first means, the hot air generating means is a heater part for heating the outside air, and the hot air obtained by heating the outside air with the heater part. A structure is provided that includes a fan that blows air toward the part.

  As a third means, in the first or second means, a configuration is adopted in which an outside air introduction port for introducing the outside air into the flange portion is formed on the bottom surface portion of the flange portion.

  As a fourth means, there is an anemometer including a propeller portion that rotates according to wind speed and a bearing that supports a rotation shaft of the propeller portion with respect to the main body portion, between the propeller portion and the bearing. A configuration is adopted in which a cover portion is provided to prevent water from entering.

  As a fifth means, a wind direction anemometer comprising a propeller part that rotates in accordance with wind speed and a main body part that rotatably supports the propeller part, and water that enters between the propeller part and the main body part. A configuration is adopted in which a discharge portion that discharges the air from between the propeller portion and the main body portion is provided.

  As a sixth means, in the fifth means, the discharge part includes a water guide part that discharges the water toward the main body part side.

  According to the anemometer of the present invention, the warm air obtained by the warm air generating means disposed in the flange portion is directly blown to the sensitive portion. For this reason, it is not necessary to introduce warm air into the flange portion via the introduction hose as in the conventional anemometer, and the warm air is not cooled in the process of flowing through the introduction hose. Therefore, according to the anemometer of the present invention, it is possible to more reliably suppress malfunction due to freezing.

  Further, according to the anemometer of the present invention, the cover portion prevents water from entering between the propeller portion and the bearing. For this reason, even if it is a case where an anemometer is arrange | positioned at low temperature environments, such as a cold region, it can suppress that a space between a propeller part and a bearing freezes. Therefore, according to the anemometer of the present invention, it is possible to more reliably suppress malfunction due to freezing.

  Further, according to the anemometer of the present invention, the water that has entered between the propeller part and the main body part is discharged to the outside from between the propeller part and the main body part by the discharge part. For this reason, even if it is a case where an anemometer is arrange | positioned in low temperature environments, such as a cold region, it can suppress that a space between a propeller part and a main-body part freezes. Therefore, according to the anemometer of the present invention, it is possible to more reliably suppress malfunction due to freezing.

  Hereinafter, an embodiment of an anemometer according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1 is a perspective view of an anemometer 1 of the present embodiment. As shown in this figure, the anemometer 1 of the present embodiment includes a sensitive part 2, a flange part 3, and a pole 4 (fixed part).

The sensing unit 2 includes a propeller unit 21 that rotates according to the wind speed, a main body unit 22 that rotatably supports the propeller unit 21, and a stand unit 23 that rotatably supports the main body unit 22. It is said. A tail blade 24 is formed in the main body portion 22, and the propeller portion 21 is directed in the wind direction by the tail blade 24.
The pole 4 fixes the sensing part 2 to the installation location via the flange part 3, and in this embodiment, the pole 4 is shaped like a rod.

  Here, the internal structure of the flange part 3 is demonstrated with reference to FIG. 2A is a side sectional view, and FIG. 2B is a plan sectional view. As shown in this figure, the flange portion 3 has a two-tube structure including an outer cylinder 31 and an inner cylinder 32, and the bottom of the inner cylinder 32 is a connecting portion for connecting to the above-described pole 4. 33. A plurality of outside air inlets 31 a for introducing outside air into the flange portion 3 are formed on the bottom surface of the outer cylinder 31. The side surface of the inner cylinder 32 has a plurality of outside air inlets 32 a for introducing outside air introduced into the outer cylinder 31 through the outside air inlet 31 a formed in the outer cylinder 31 into the inner cylinder 32. Is formed. Note that an end 34 of the inner cylinder 32 on the non-connecting portion 33 side is configured as an open end.

The filter 5 and the hot air generator 6 (hot air generator) are arranged inside the inner cylinder 32 of the flange portion 3 configured as described above.
The filter 5 is for removing foreign substances contained in the outside air introduced into the inner cylinder 32 via the outside air introduction ports 31a and 32a, and is disposed in the vicinity of the outside air introduction port 32a. And as shown in FIG. 2, the warm air generation | occurrence | production part 6 is arrange | positioned at the upper part of the filter 5. As shown in FIG.

The warm air generating unit 6 senses the warm air obtained by heating the outside air with the heater unit 61 for heating the outside air introduced through the outside air introduction ports 31a and 32a. And a fan 62 that blows air toward the unit 2.
As shown in FIG. 2 (b), the heater section 61 is disposed on the heater section installation plate 7 disposed in the inner cylinder 32, and four heater sections 61 are disposed so as to surround the central axis of the flange section 3. ing. Moreover, the fan 62 is arrange | positioned at the upper part of the heater part 61, and blows the warm air obtained by the heater part 62 toward the edge part 34 of the inner cylinder 32 comprised as an open end.

A power line (not shown) is connected to the heater unit 61 and the fan 62, and power is supplied to the heater unit 61 and the fan 62 through the power line.
As shown in FIG. 2, a control board 8 that controls the heater unit 61 and the fan 62 is disposed between the outer cylinder 31 and the inner cylinder 32. A sensor (not shown) for measuring the external temperature and a sensor (not shown) for measuring the internal temperature of the inner cylinder 32 are connected to the control board 8. The heater unit 61 and the fan 62 are controlled based on a signal input from the sensor so that the outside air is heated optimally.

Next, with reference to FIG. 3, the internal structure of the sensing part 2 will be described. FIG. 3 is a schematic cross-sectional view showing a side cross-section of the sensitive part 2.
As shown in this figure, the main body portion 22 and the stand portion 23 are formed in a hollow shape, and the stand portion 23 is fixed on the flange portion 3 described above. The stand portion 23 is formed in a substantially cylindrical shape having upper and lower ends as open ends, and a rotary encoder 41 and a signal processing board 42 are disposed therein. The main body part 22 is formed with a connecting part 51 extending downward so as to surround the turning axis of the main body part 22, and the connecting part 51 can be freely turned by the stand part 23 via bearings 43 and 44. As a result, the main body 22 is pivotably supported. A plate 45 for fixing the bearing 43 to the stand part 23 is installed inside the stand part 23. The plate 45 has a substantially triangular shape in plan view. Since the plate 45 is formed in a substantially triangular shape in this way, a gap a is partially formed between the stand portion 23 and the plate 45 which are set in a substantially cylindrical shape. It is possible to secure a flow path of warm air that passes through the top.
In addition, a plurality of communication ports 46 are formed in the upper portion of the stand portion 23, and a flow path for hot air to escape from the inside of the stand portion 23 to the inside of the main body portion 22 is secured by the communication ports 46. Yes.

  The optical pickup 9 for detecting the rotation of the propeller unit 21 is inserted into the connecting part 51 of the main body part 22, and the optical pickup 9 is connected to the signal processing board 42. That is, the optical pickup 9 is disposed along the turning axis of the main body 22. The optical pickup 9 is supported by a block 52 disposed inside the main body 22 via a bearing 53. The block 52 also has a substantially triangular shape in plan view like the plate 45. Since the block 52 is formed in a substantially triangular shape in this manner, a gap b is partially formed between the lower portion of the main body portion 22 which is set in a substantially cylindrical shape and the block 52. It is possible to secure a hot air flow path from the lower part to the upper part.

  A propeller portion 21 is rotatably supported on the upper portion of the main body portion 22. Specifically, the propeller unit 21 is rotatably supported by supporting the rotating shaft 21 a of the propeller unit 21 by the bearings 54 and 55 supported by the main body unit 22 via the stay 53. An encoder 21b is installed at the end of the rotating shaft 21a so as to be positioned above the optical pickup 9 described above. Then, the encoder 21 b rotates as the propeller unit 21 rotates according to the wind speed, and this rotation is detected by the optical pickup 9. The detection result of the optical pickup 9 is input to the signal processing board 42, and the wind speed is calculated based on the detection result. Further, the wind direction is calculated based on the detection result of the rotation of the main body portion 22 detected by the rotary encoder 41 via the connecting portion 51.

Note that a plurality of communication ports 56 are formed in the stay 53, and a flow path for warm air to escape from the right side of the main body 22 to the left side of the main body 22 is secured by the communication ports 56.
In addition, a plurality of communication ports 57 are formed at the end of the main body portion 22 on the propeller portion 21 side, and the flow for allowing warm air to escape from the inside of the main body portion 22 to the outside of the main body portion 22 through the communication ports 57. Road is secured.

In the anemometer 1 of the present embodiment having such a configuration, the warm air obtained by the warm air generator 6 disposed inside the flange portion 3 is blown into the inside of the sensing portion 2. And this warm air is discharged | emitted outside the sensing part 2 through the flow path comprised by the clearance gaps a and b, the communicating ports 46, 56, and 57 and the clearance gap between each member in the sensing part 2. FIG.
Therefore, according to the anemometer 1 of the present embodiment, it is not necessary to introduce hot air into the flange portion via the introduction hose as in the conventional anemometer, and cooling is performed in the process in which the warm air flows through the introduction hose. It will not be done. For this reason, according to the anemometer 1 of this embodiment, it becomes possible to suppress the malfunctioning by freezing more reliably.
The amount of heat generated in the heater unit 61 not only heats the outside air, but part of the heat is transferred to the sensing unit 2 via the flange unit 3. For this reason, since the sensitive part 2 itself can be heated by the heater part 3, it becomes possible to suppress the malfunction by freezing more efficiently. Such an effect cannot be expected in a conventional anemometer in which the hot air generating part is arranged outside the flange part 3.

  Moreover, in the anemometer 1 of this embodiment, since it becomes unnecessary to install an introduction hose like the conventional anemometer, the flow path of a warm air becomes short. For this reason, the fan 62 provided in the anemometer 1 of the present embodiment can be made smaller than the fan provided in the conventional anemometer. Therefore, power consumption can be reduced compared with the conventional anemometer, and the running cost of the anemometer can be reduced.

  Moreover, in the anemometer 1 of this embodiment, the warm air generation | occurrence | production part 6 is accommodated in the inside of the flange part 3. FIG. For this reason, the handleability is improved as compared with a conventional anemometer in which a warm air generator is installed outside.

  Further, as in the anemometer 1 of the present embodiment, the friction part of the lubricating oil in the bearings 43, 44, 53 to 55 is reduced by warming the sensing part 2 by warm air and heat transfer. The responsiveness with respect to the wind speed of the propeller part 21 is improved.

  Moreover, in the anemometer 1 of this embodiment, in the flange part 3, since the external air inlet 31a is formed in the bottom face part of the outer cylinder 31, ie, the bottom face part of the flange part 3, water is supplied to the external air inlet 31. Can be prevented from adhering. Therefore, it is possible to prevent the outside air introduction port 31a from freezing and stopping the introduction of outside air to the flange portion 3.

  FIG. 4 is an enlarged cross-sectional view in which the vicinity of the propeller portion 21 in the anemometer 1 of the present embodiment is enlarged. As shown in this figure, in the anemometer 1 of the present embodiment, a gap d (discharge portion) is formed between the propeller portion 21 and the main body portion 22. The gap d has such a width that water is not held between the propeller portion 21 and the main body portion 22 due to surface tension. For this reason, the water that has entered between the propeller portion 21 and the main body portion 22 is discharged to the outside through the gap d. By forming such a gap d, it is possible to prevent water from being held between the propeller portion 21 and the main body portion 22, so that the space between the propeller portion 21 and the main body portion 22 is frozen. Can be suppressed. In addition, it can suppress more reliably that water is hold | maintained at the clearance gap d by setting the width | variety of the clearance gap 3 to 3 mm or more.

  In addition, a fillet 22a (water guide part) and a V groove 22b (water guide part) are formed in the center part of the main body part 22 located below the gap d. By forming such fillets 22a and V-grooves 22b, the water that has entered the gap d is discharged toward the main body 22 side. For this reason, it can suppress that water adheres to the propeller part 21, and the malfunctioning by freezing of the propeller part 21 can be suppressed.

  FIG. 5 is an enlarged view of an A portion in FIG. As shown in this figure, in the anemometer 1 of the present embodiment, water enters the gap e between the bearing 55 and the propeller portion 21 that support the rotating shaft 21a of the propeller portion 21 with respect to the main body portion 22. The cover part 60 which suppresses is provided.

FIG. 6 is a perspective view of the cover unit 60. As shown in FIGS. 5 and 6, the cover 60 includes a water shielding part 61 that covers the gap e so as to prevent water from entering the gap e, and a volume reducing part 62 that reduces the spatial volume of the gap e. And a fixing part 63 that fixes the water shielding part 61 and the volume reducing part 62 to the stay 53.
By providing such a cover part 60, since the water-impervious part 61 prevents water from entering the gap e, the bearing 55 and the propeller part 21 can be prevented from freezing. Even if water enters the gap e, since the space volume of the gap e between the bearing 55 and the propeller portion 21 is reduced by the volume reducing portion 62, only a very small amount of water is present in the gap e. Can not infiltrate. In such a case, for example, even when the space between the bearing 55 and the propeller unit 21 is frozen, the amount of ice is small, so that the propeller unit 21 rotates even in a relatively weak wind. Can do. And after the propeller part 21 rotates once, since ice peels off, it becomes possible to measure a wind speed.

In general, in the anemometer, a low-viscosity lubricating oil is used for the bearing in order to improve the responsiveness of the propeller portion 21 to the wind speed. Such low-viscosity lubricating oil may flow out of the bearing depending on the usage environment and age.
Here, the anemometer 1 of the present embodiment is provided with a cover portion 60 that prevents water from entering the gap e between the bearing 55 and the propeller portion 21 from the outside. And this cover part 60 can suppress that lubricating oil flows out toward the exterior from the inner side (bearing 55) conversely. Specifically, by installing the cover portion 60, the lubricating oil that has flowed out of the bearing 55 is confined in the gap e, whereby the further outflow of lubricating oil can be delayed. For this reason, the life of the anemometer 1 can be extended by the cover part 60.
In addition, since the lubricating oil flowing out from the bearing 55 is confined in the gap e, water can be further prevented from entering the gap e, and corrosion of the rotating shaft 21a in the gap e can also be suppressed. In addition, a cover portion may be disposed corresponding to the bearings 43, 44, 53, and 54 for the purpose of suppressing the outflow and corrosion of the lubricating oil.

  As mentioned above, although preferred embodiment of the anemometer which concerns on this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

It is a perspective view of the anemometer 1 which is one Embodiment of this invention. FIG. 4 is a cross-sectional view for explaining the internal structure of the flange portion 3. 4 is a schematic cross-sectional view for explaining an internal structure of the sensing part 2. FIG. It is the expanded sectional view which expanded the propeller part 21 vicinity. It is the enlarged view to which the A section in FIG. 4 was expanded. 4 is a perspective view of a cover part 60. FIG.

Explanation of symbols

1 …… Wind direction anemometer 2 …… Sensing part 21 …… Propeller part 21a …… Rotating shaft 22 …… Body part 3 …… Flange part 31a …… Outside air inlet 4 …… Pole (fixed part)
55 …… Bearing 6 …… Hot air generator (hot air generator)
61 …… Heater part 62 …… Fan 60 …… Cover part 22a …… Fillet (water guide part)
46, 56, 57 ... Communication port (flow path)
a …… Gap (flow path)
b: Clearance (flow path)
d: Clearance (discharge section)

Claims (6)

An anemometer comprising a sensing unit including a propeller unit that rotates according to wind speed, and a fixing unit that fixes the sensing unit to an installation location via a flange unit,
Hot air generating means that is arranged inside the flange portion and blows hot air obtained by heating the outside air introduced from the outside of the flange portion toward the sensitive portion;
An airflow anemometer, comprising: the warm air flow path formed in the sensing part. The warm air generating means includes a heater unit that warms the outside air, and a fan that blows the warm air obtained by warming the outside air toward the sensing unit. The anemometer of the wind direction according to claim 1. The wind direction anemometer according to claim 1 or 2, wherein an outside air introduction port for introducing the outside air into the flange portion is formed in a bottom surface portion of the flange portion. An anemometer comprising a propeller unit that rotates according to wind speed, and a bearing that supports a rotation shaft of the propeller unit with respect to the main body,
An anemometer comprising a cover portion that prevents water from entering between the propeller portion and the bearing. An anemometer comprising a propeller portion that rotates according to wind speed and a main body portion that rotatably supports the propeller portion,
An anemometer comprising a discharge unit that discharges water that enters between the propeller unit and the main body unit from between the propeller unit and the main unit unit. The wind direction anemometer according to claim 5, wherein the discharge unit includes a water guide unit that discharges the water toward the main body.

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