JP2527766Y2 - Mounting structure of wind temperature detector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a wind temperature detector mounted on an axial fan or the like for cooling electronic equipment by an air cooling system.

2. Description of the Related Art Since recent electronic devices are often installed in offices, noise suppression is particularly important. For this reason, in the case of an air-cooled device, the rotation speed of the fan is controlled according to the temperature condition in the device. This is because when the rotation speed of the fan increases, the wind noise rises in a sharp curve. The present invention relates to a mounting structure of a wind temperature detector mounted on an axial fan to control a rotation speed of the fan.

[0003]

2. Description of the Related Art FIGS. 2 (a), 2 (b) and 2 (c) are views showing a mounting structure of a conventional wind temperature detector, where (a) is a schematic side sectional view and (b) is a plan view. FIG. 3C is an enlarged perspective view of the “α” portion, and FIG. 3 is a block diagram showing an example of a configuration of a wind temperature control circuit provided in the axial fan.

[0004] This axial flow fan 10 is shown in Figs. 2 (a) and 2 (b).
As shown in (c), a fan case 12 constituting the outer frame portion, a fan section 13 having a plurality of propellers 14, a fan drive section 11 for rotating the fan section 13 and a fan drive section It is constituted by a plurality of drive unit support ribs 15 for mechanically connecting the unit 11 and the fan case 12.

[0005] The side wall surface of the fan drive unit 11 has
The wind temperature detector 1 and its lead wire 3 are arranged so as to be exposed to the outside through the through hole 4 of the temperature sensing portion. The wind temperature detector 1 flows in the direction of arrow U by the rotation of the propeller 14. This is arranged to measure the temperature of the air flow 50 to be generated, and the rotational speed of the propeller 14 is controlled based on the temperature measurement result to reduce noise.

FIG. 3 is a block diagram showing an example of a configuration of a wind temperature control circuit provided in the axial flow fan 10. As shown in FIG. As shown in FIG. 3, the wind temperature control circuit includes a wind temperature detector 1 for detecting the temperature of the air flow 50, and a temperature detection circuit 55 for converting a temperature signal from the wind temperature detector 1 into an electric signal. And a rotation speed control circuit 60 for controlling the rotation speed of the fan unit 13 based on a signal from the temperature detection circuit 55. Among them, the wind temperature detector 1 is arranged so as to be exposed to the outside from the fan drive unit 11, and the wind temperature control unit 80 is housed in the fan drive unit 11.

[0007] The axial fan 10 of the electronic equipment installed in the office has a propeller corresponding to the temperature of the airflow 50.
The reason for having the function of controlling the rotation speed of 14 is based on an attempt to minimize the noise, and most of the recent axial flow fans 10 have this rotation speed control function.

[0008]

[Problems to be Solved by the Invention] As shown in FIGS. 2 (a), 2 (b) and 2 (c), the mounting structure of the conventional wind temperature detector has a structure in which the wind temperature detector 1 and the lead wire 3 are respectively provided. Fan drive
The structure is such that it is exposed to the outside through the temperature sensing portion through hole 4 provided on the side wall surface of the eleventh side. For this reason, dust 40 and moisture (not shown) contained in the air flow 50 adhere to the wind temperature detector 1 and the lead wire 3. If dust 40 or moisture adheres to the wind temperature detector 1 and its lead wires 3, the electrical insulation of each of the lead wires 3 naturally deteriorates, and the temperature detection accuracy of the wind temperature detector 1 deteriorates. This also impedes the flow of the airflow 50 and increases the wind noise.

According to the present invention, the air temperature detector 1 and its lead wire 3 are housed in a drive unit support rib 15 for mechanically connecting the fan drive unit 11 and the fan case 12, and the air flow is brought into direct contact therewith. Therefore, it is intended to realize a mounting structure of the wind temperature detector in which the temperature measurement accuracy and the noise suppression effect of the wind temperature detector 1 are remarkably improved.

[0010]

Means for Solving the Problems The mounting structure of the wind temperature detector according to the present invention, as shown in FIG. 1, the fan drive unit and off
With a drive part support rib that mechanically couples the fan case
The mounting structure of the air temperature detector installed on the axial fan
I, the air temperature detector and leads the thermally conductive
It is configured to be housed in the driving portion support rib made of a good tubular member .

[0011]

The mounting structure of the wind temperature detector is the same as that of the wind temperature detector 1.
The lead wire 3 is made of a tubular member having good heat conductivity (pipe shape).
Is accommodated in the driving part support rib 15 composed of
These air temperature detectors
1 or lead 3 coming into contact with airflow 50
Wind noise is suppressed. In particular, the implementation of this wind temperature detector
The structure is such that the driving part support rib 15 is a tubular member with good heat conductivity.
Temperature of the air flowing outside
Is accurately transmitted to the wind temperature detector 1 in the drive unit support rib 15.
You. Therefore, the operation reliability of the wind temperature detector 1 is sufficiently ensured.
Is done. Also, when applying the mounting structure of this wind temperature detector,
Since dust 40 and moisture do not adhere to the air temperature detector 1,
There is no risk that the wind temperature detector 1 malfunctions. This wind temperature detection
The mounting structure of the output unit consists of a wind temperature detector 1 and a lead wire 3
Wind noise can be reduced by being accommodated in the support rib 15.
In other words, the drive unit support rib 15 is made of a tubular member having good heat conductivity.
The configuration ensures that the operation reliability of the wind temperature detector 1 is ensured.
It is characterized by the following.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) and 1 (b) are a perspective view of an essential part showing an embodiment of the present invention and an enlarged view of a "β" portion thereof. In these figures, the same portions as those in FIGS. Have the same reference numerals.

As shown in FIGS. 1A and 1B, the mounting structure of the wind temperature detector according to the present invention comprises a wind temperature detector 1 and a lead wire 3.
Are housed in a drive support rib 15 that mechanically couples the fan drive 11 and the fan case 12. Since the driving portion support rib 15 is manufactured using a metal square pipe having good thermal conductivity, it may adversely affect the temperature detection accuracy of the wind temperature detector 1 housed therein. There is nothing.

The lead wire 3 of the wind temperature detector 1 is
As shown in (b), since it is connected to the wind temperature control unit 80 disposed in the fan drive unit 11, the temperature information of the air flow 50 obtained through the wind temperature detector 1 is The rotation speed control information of the fan unit 13 is input to the wind temperature control unit 80.

As shown in FIGS. 1 (a) and 1 (b), the mounting structure of this wind temperature detector is such that the wind temperature detector 1 and the lead wire 3 which are extremely unstable and easily deformable have a structure. Since it is housed in the extremely rigid drive unit support rib 15, it is not deformed or damaged due to the vibration of the device or the influence of the air flow 50, etc. Extremely high reliability.

A temperature detection circuit 55 and a rotation speed control circuit 60 (FIG. 3)
The air temperature control unit 80 having a built-in air temperature control unit is a so-called printed wiring board (printed wiring board).
Reference numeral 80 is incorporated in the fan drive unit 11 together with a drive motor (not shown) for driving the fan unit 13.

According to the wind temperature detector mounting structure, since the wind temperature detector 1 is not exposed at all on the outer surface, there is an advantage that its temperature detecting ability is not affected at all by the external environment. . It should be noted that in which drive unit support rib 15 the wind temperature detector 1 is to be arranged is determined at the design stage and is not specified.

[0018]

As is apparent from the above description, since the mounting structure of the wind temperature detector according to the present invention has a structure in which the wind temperature detector is housed in the driving portion support rib, these components are not provided outside. Since there is no exposure, the operation is extremely stable and the noise is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part showing an embodiment of the present invention and an enlarged view of a “β” portion thereof.

FIG. 2 is a schematic side sectional view and a plan view showing a mounting structure of a conventional wind temperature detector, and an enlarged perspective view of an “α” portion thereof.

FIG. 3 is a block diagram illustrating a configuration example of a wind temperature control circuit provided in the axial fan.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Air temperature detector 3 Lead wire 4 Through hole of temperature sensing part 10 Axial fan 11 Fan drive unit 12 Fan case 13 Fan unit 14 Propeller 15 Drive support rib 40 Dust 50 Air flow 55 Temperature detection circuit 60 Rotation speed control circuit 80 Air temperature controller

Claims (1)

(57) [Scope of request for utility model registration] (1) Mechanically connecting a fan drive unit and a fan case.
The mounting structure of the wind temperature detector installed in the axial flow fan comprising a drive unit supporting rib binding, the air temperature detector and the lead wire, the good thermal conductivity tubular member
Mounting structure of the wind temperature detector, characterized in that so as to accommodate the drive unit supporting the ribs made.