KR102453200B1 - Identification of bearings for blast fans - Google Patents

Abstract

The present invention relates to a bearing identification method for a blowing fan, wherein the blowing fan is mounted on a seating jig provided in a housing, the inlet of the blowing fan is sealed with a sealing cylinder, and the upper outer surface of the blowing fan is pressurized and fixed with the jig cylinder, and lifted and closed Seal the inlet of the blower fan with a cylinder, and while supplying predetermined pressure air into the blower fan through the air supply pipe of the lifting/closing cylinder, measure the air pressure around the air supply pipe with a pressure sensor and deliver it to the discriminating device. By comparing and calculating the first and second reference pressures input to the device and the air pressure measured by the pressure sensor, the bearing type corresponding to the first and second reference pressures is determined.
According to the present invention, the type of bearing corresponding to the first reference pressure or the second reference pressure is determined by comparing and calculating the air pressure around the air supply pipe measured by the pressure sensor with the first reference pressure or the second reference pressure of the discrimination device. By determining the type of bearing, it is easy to check whether the bearing required by the company is installed in the blower fan, and, while measuring the change in air pressure around the air supply pipe in real time, Leakage can be checked, and the air pressure value measured by the pressure sensor can be checked to determine whether the bearing is incorrectly assembled or defective. There is an advantage in that the efficiency is increased and the reliability of the product is improved.

Description

Identification of bearings for blast fans

The present invention relates to a bearing identification method, and more particularly, while supplying air of a predetermined pressure through an air supply pipe into a blower fan sealed by a sealing member of an elevating cylinder, the pressure sensor controls the air pressure around the air supply pipe. It relates to a bearing discrimination method for a blower fan that measures and calculates a pressure value measured by a pressure sensor and a first reference pressure or a second reference pressure input to a determination device to determine the type of bearing installed in the blower fan.

In general, a blower fan is a mechanism for discharging air in a direction perpendicular to or opposite to the inflow direction of the outside air after the blades provided therein are driven by the driving force of the motor to forcibly suck in outside air. .

At this time, such a blower fan is provided with a bearing guiding the rotation of the blade fan of the blower fan therein, and the amount of gas (eg, air, gas, mixed gas) leaking to the outside through the bearing according to the type of the bearing In proportion to , a change occurs in the amount of gas flowing through the blower fan.

Patent Document 1 shows a conventional blower fan leak inspection device. Referring to this, a seating jig for supporting and supporting the edge of the blowing fan, and installed directly above the blowing fan seated on the seating jig, the blowing fan upward direction The airtight cylinder sealing the upper case of the upper case of the blower fan while pressing and pressing the upper edge of the upper case of the blower fan, and a through hole that is fixedly installed on the inner bottom surface of the housing and allows the inflow of air in the center and an air supply jig for supplying air into the upper and lower parts of the blowing fan by allowing the central portion of the bottom surface of the lower case of the blowing fan to be seated.

Here, the sealing cylinder is moved downward from directly above the blowing fan seated on the seating jig, so that the central edge of the upper case of the blowing fan is sealed by the sealing cylinder, and then, the air supply jig is moved upward, Make sure the bottom of the lower case is sealed.

And, when air is forcibly supplied into the blowing fan through the air hose fitted in the through hole of the lower case, air is retained in the upper and lower cases of the blowing fan, and at this time, air is discharged through the rim gaps of the upper and lower cases. Check whether there is a leak through a leak tester, and when leaking air is detected by this leak tester, the blower fan is judged as defective.

However, in Patent Document 1 as described above, by examining only whether the air leaking through the outer edge of the blowing fan with a leak tester is leaked, it is impossible to determine whether air is leaking through the bearing at all, and the amount of air leaking through the bearing The amount of air flowing through the blowing fan is significantly reduced in proportion to this, and the function of the blowing fan is significantly reduced due to the decrease in the air flow of the blowing fan. , In addition, it is not possible to directly check whether the bearings required by the company are installed, and therefore, there is the inconvenience of having to disassemble the inside of the blowing fan to check the bearing type directly. There is a problem in that reliability is reduced at the same time.

US 10-2045319 B1

The present invention is to solve the above problems, and an object of the present invention is to seat a blowing fan on a seating jig provided in a housing, and seal the inlet of the blowing fan with a sealing cylinder, but the upper end of the blowing fan with a jig cylinder The outer surface is pressurized and fixed, the inlet of the blower fan is sealed with a lifting sealing cylinder, and air of a predetermined pressure is supplied into the blowing fan through the air supply pipe of the lifting sealing cylinder, and the air pressure around the air supply pipe is measured with a pressure sensor. to the determination device, but by comparing and calculating the first reference pressure or second reference pressure input to the determination device and the air pressure measured by the pressure sensor, the bearing type corresponding to the first reference pressure or the second reference pressure is determined. It is to provide a bearing discrimination method for a blower fan to discriminate.

In order to achieve the object of the present invention as described above, a method for determining a bearing for a blower fan according to the present invention includes a first step of seating the blowing fan on a seating jig installed on a bottom surface of a housing; a second process of horizontally moving the sealing cylinder installed on one side of the housing in the direction of the blowing fan to block the exhaust port of the blowing fan with the sealing cylinder; a third process of horizontally moving a jig cylinder installed on the other side of the housing in the direction of the outer surface of the blowing fan, and pressing and fixing the upper outer surface of the blowing fan with the jig cylinder; a fourth process of moving the lifting sealing cylinder installed on the bottom surface of the housing in the direction of the inlet formed to be perpendicular to the exhaust port of the blowing fan seated on the seating jig, and sealing the inlet with the lifting sealing cylinder; A fifth process of measuring the air pressure around the air supply pipe with a pressure sensor installed at the end of the air supply pipe while supplying air of a predetermined pressure to the inlet of the blowing fan through an air supply pipe installed in the center of the lifting and sealing cylinder ; and transmitting the air pressure measured in the fifth step to a determining device installed outside the housing, and comparing the air pressure measured by the pressure sensor with the determining device and the first and second reference pressures input to the determining device and a sixth process of calculating and determining the bearing type corresponding to the first and second reference pressures.

In the method for determining a bearing for a blowing fan according to the present invention, in the first process, the blowing fan is mounted on the seating jig so that the bearing installed in the blowing fan faces upward with respect to the seating jig.

In the method for determining a bearing for a blower fan according to the present invention, in the third step, the jig cylinder is installed at a different position from the hermetic cylinder, and moves toward the outer surface of the upper end of the blower fan to prevent interference with the hermetic cylinder It is characterized in that it prevents the blowing fan from being pushed upward in the process of sealing the inlet of the blowing fan with the elevating sealing cylinder.

In the method for determining a bearing for a blower fan according to the present invention, in the fifth step, the air supply pipe of the lifting/closing cylinder supplies air at a predetermined pressure into the blowing fan for a predetermined time, and the air supply pipe to the pressure sensor It is characterized in that the ambient pressure is measured for a predetermined time.

In the method for determining a bearing for a blower fan according to the present invention, in the fifth step, the air supply pipe of the lifting/closing cylinder supplies pressure air of 4.2Kpa into the blowing fan through the inlet.

In the method for determining a bearing for a blower fan according to the present invention, in the sixth step, the air pressure measured by the pressure sensor with the determination device is compared and calculated, and the first reference pressure and the second reference pressure are compared to the pressure sensor. When the measured air pressure corresponds to the first reference pressure, it is recognized as a first bearing, and when the air pressure measured by the pressure sensor corresponds to the second reference pressure, it is recognized as a second bearing.

In the method for determining a bearing for a blower fan according to the present invention, the first bearing corresponding to the first reference pressure is a DD bearing, and the second bearing corresponding to the second reference pressure is a ZZ bearing.

In the method for determining a bearing for a blower fan according to the present invention, in the sixth process, the air pressure measured by the pressure sensor and the second reference pressure are compared and calculated with the determination device, and the air pressure measured by the pressure sensor is If it is less than the second reference pressure, it is characterized in that the bearing installed in the blowing fan is determined to be defective.

According to the present invention, the type of bearing corresponding to the first reference pressure or the second reference pressure is determined by comparing and calculating the air pressure around the air supply pipe measured by the pressure sensor with the first reference pressure or the second reference pressure of the discrimination device. By determining the type of bearing, it is easy to check whether the bearing required by the company is installed in the blower fan, and, while measuring the change in air pressure around the air supply pipe in real time, Leakage can be checked, and the air pressure value measured by the pressure sensor can be checked to determine whether the bearing is incorrectly assembled or defective. There is an advantage in that the efficiency is increased and the reliability of the product is improved.

1 is a perspective view showing a bearing discrimination device for a blower fan according to the present invention.
Figure 2 is an exploded perspective view of Figure 1;
3 is a side cross-sectional view of a bearing discrimination device for a blower fan according to the present invention.
4 is a graph showing the first reference pressure and the second reference pressure of the bearing discrimination device for a blower fan according to the present invention.
5 is a flowchart showing a method for determining a bearing for a blower fan according to the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

1 to 5 , the housing 100 is formed in a hollow shape with one surface open, and accommodates the blowing fan 10 therein.

The housing 100 accommodates the seating jig 200 , the sealing cylinder 300 , the jig cylinder 400 , and the lifting/closing sealing cylinder 500 therein.

The seating jig 200 is installed on the inner bottom surface of the housing 100 to allow the blowing fan 10 outer rim to be seated on the inner rim.

The seating jig 200 is installed as a pair symmetrically to each other, so that the outer rim of the blowing fan 10 is seated.

The seating jig 200 is formed to protrude to form a stepped structure on the rim on its upper surface, further forming a close contact protrusion 201 that closely supports the outer surface of the rim of the blower fan 10 .

The contact protrusion 201 prevents the outer edge of the blowing fan 10 seated on the seating jig 200 from being pushed out in the lateral direction of the seating jig 200 .

Preferably, the close contact protrusion 201 is formed to protrude to correspond to the shape of the outer edge of the blowing fan 10 .

The seating jig 200 is fixedly installed on the inner bottom surface of the housing 100 .

The seating jig 200 seats the blowing fan 10 so that the bearing 11 installed in the blowing fan 10 faces upward with respect to the seating jig 200 .

The airtight cylinder 300 is installed on one side of the inside of the housing 10, and is horizontally moved in the direction of the blowing fan 10 seated on the seating jig 200, and the exhaust port 12 of the blowing fan 10. seal the

The airtight cylinder 300 is formed to correspond to the shape of the exhaust port 12 , and is in close contact with the exhaust port 12 to seal the exhaust port 12 .

The sealed cylinder 300 is slidably coupled to a first cylinder body 301 installed on one side inside the housing 100 and the first cylinder body 301, and at the end of the blowing fan 10 It is composed of a first rod (302) formed with a sealing plate (302a) for sealing the exhaust port (12).

The first rod 302 is slidably moved along the first cylinder body 301 so that the sealing plate 302a is pressed into close contact with the exhaust port 12 .

The jig cylinder 400 is installed on the other side inside the housing 100 and is horizontally moved in the direction of the blowing fan 10 seated on the seating jig 200 to press and fix the upper outer surface of the blowing fan 10 . do.

The jig cylinder 400 is formed to correspond to the shape of the external surface of the blowing fan 10 , and while pressing and pressing the external surface of the blowing fan 10 , the blowing fan 10 is fixedly supported.

The jig cylinder 400 is slidably coupled to the second cylinder body 401 installed on the other side inside the housing 100 and the second cylinder body 402, and at the distal end of the blowing fan 10, the outer surface Consists of a second rod 402 formed with a pressing jig 402a for pressing and fixing the.

The second rod 402 slides along the second cylinder body 402 so that the pressing jig 402a presses the outer surface of the blowing fan 10 .

The jig cylinder 400 is installed in a different position from the sealing cylinder 300, and is moved toward the outer surface of the upper end of the blowing fan 10 to prevent interference with the hermetic cylinder 300, and the lifting sealing cylinder ( 500) to prevent the blowing fan 10 from being pushed upward in the process of sealing the inlet 13 of the blowing fan 10.

The lifting sealing cylinder 500 is installed on the inner bottom surface of the housing 100, is moved up and down to seal the inlet 13 of the blowing fan 10, and is exposed upwardly in the center of the blowing fan. An air supply pipe 501 for supplying air of a predetermined pressure is formed through the inlet 13 of (10), and at the upper end of the air supply pipe 501, the air pressure around the air supply pipe 501 is measured. A sensor 501a is formed.

The lifting sealing cylinder 500 seals the inlet 13 of the blowing fan 10 to prevent the air in the blowing fan 10 from leaking to the outside through the inlet 13 .

The air supply pipe 501a is connected to an external air supply device (not shown) to supply air into the blowing fan 10 .

The pressure sensor 501a measures the air pressure around the air supply pipe 501 and transmits it to the determining device 600 .

The air pressure value around the air supply pipe 501 measured by the pressure sensor 501a is the blower fan 10 at a predetermined air pressure supplied into the blowing fan 10 through the air supply pipe 501 . ), it is desirable that it is the remaining air pressure value after subtracting the amount of air leaking through the bearing (B).

The pressure sensor 501a preferably measures a discharge pressure of the air discharged from the air supply pipe 501 or an internal pressure of the blowing fan 10 .

The air supply pipe 501 of the lifting/closing cylinder 500 supplies air at a predetermined pressure for a predetermined time into the blowing fan 10 .

The air supply pipe 501 supplies air into the blowing fan 10 for a period of time within 6 seconds to 10 seconds.

The pressure sensor 501a measures the pressure around the air supply pipe 501 for a predetermined time, and transmits the measured value to the determination device 600 .

The pressure sensor 501a measures the air pressure around the air supply pipe 501 for a time period of 6 to 10 seconds.

The air supply pipe 501 of the lifting sealing cylinder 500 supplies pressure air of 4.2Kpa into the blowing fan 10 through the inlet 13 .

The determination device 600 is installed on one side of the housing 100, and receives the air pressure around the air supply pipe 501 measured by the pressure sensor 501a, and the air measured by the pressure sensor 501a The pressure and the first reference pressure P1 and the second reference pressure P2 input to the discrimination device 600 are compared and calculated, and the first reference pressure P1 and the second reference pressure P2 are corresponding to the first reference pressure P1 and the second reference pressure P2 Determine the type of bearing (B) to be used.

The determination device 600 compares and calculates the air pressure measured by the pressure sensor 501a with the first reference pressure P1 and the second reference pressure P2, and the air measured by the pressure sensor 501a If the pressure corresponds to the first reference pressure (P1), it is determined as the first bearing (B1), and when the air pressure measured by the pressure sensor (501a) corresponds to the second reference pressure (P2), the second bearing ( B2).

The determination device 600 determines the type of the bearing B installed in the blower fan 10 through an external display (not shown), and displays the bearing (B) in the blower plate 10 with an external display (not shown). ) is denoted by the first bearing (B1) or the second bearing (B2).

The determining device 600 determines that the first bearing B1 corresponding to the first reference pressure P1 is a DD bearing, and the second bearing B2 corresponding to the second reference pressure P2. is judged as a ZZ bearing.

The determination device 600 compares and calculates the air pressure measured by the pressure sensor 501a and the second reference pressure P2 with the determination device 600, and the air pressure measured by the pressure sensor 501a If the second reference pressure (P2) or less, the bearing (B) installed in the blower fan (10) is determined to be defective.

In the determining device 600, the first reference pressure P1 input into the determining device 600 compared with the air pressure measured by the pressure sensor 501a is 3.9 Kpa or more, and the second reference pressure P2 ) is within 3.6Kpa ~ 3.8Kpa.

The determination device 600 receives the air pressure from the pressure sensor 501a and determines that the bearing B in the blower fan 10 is defective when the air pressure is 3.5 Kpa or less.

The bearing identification method for a blower fan according to the present invention configured as described above is used as follows.

First, the outer edge of the blowing fan 10 is seated (S100) on the seating jig 200 installed on the bottom surface of the housing 100, and the outer edge of the blowing fan 10 is attached to the seating jig 200. (201) is closely supported.

At this time, the close contact protrusion 201 is formed to protrude from the rim of the seating jig 200 to correspond to the shape of the outer rim of the blowing fan 10 , and support the outer rim of the blowing fan 10 .

Then, the first rod 302 is horizontally moved based on the first cylinder body 301 of the hermetically sealed cylinder 300 installed in the housing 100, and the hermetic plate 302a installed on the first rod 302 is moved horizontally. ) to be in close contact with the exhaust port 12 of the blowing fan 10 (S200).

Then, by sealing the exhaust port 12 while the sealing plate 302a is in close contact with the exhaust port 12 , the air in the blowing fan 10 is prevented from leaking to the outside through the exhaust port 12 .

Thereafter, the second rod 402 is mounted on the seating jig 200 based on the second cylinder body 401 of the jig cylinder 400 installed inside the housing 100, and the blowing fan 10 is seated on the mounting jig 200. The upper outer surface is moved horizontally in the direction of the upper end, and the upper outer surface of the blower fan 10 is pressed with a press jig 402a formed at the end of the second rod 402 (S300).

At this time, the pressure jig 402a is formed to correspond to the shape of the upper outer surface of the blowing fan 10, and by pressing and fixing the upper outer surface of the blowing fan 10, the blowing fan 10 is seated in the jig 200 Lifting upwards from the top is prevented.

In particular, the jig cylinder 400 is installed on one side and the other side of the housing 100, respectively, to prevent interference with the sealed cylinder 300, the jig cylinder 400 or the sealed cylinder 300. The first rod 302a and the second rod 402a are prevented from interfering with each other while horizontally moving.

Next, by moving the lifting sealing cylinder 500 installed on the bottom surface of the housing 100 upward, the inlet 13 of the blowing fan 10 seated on the seating jig 200 with the lifting sealing cylinder 500 . ) is sealed (S400).

Here, the lifting sealing cylinder 500 forms an air supply pipe 501 that penetrates upwardly in its central part, and the air supply pipe 501 is located at the inlet 13 side, and the air supply pipe ( 501) to supply air at a predetermined pressure to the inlet 13 of the blowing fan 10 so that the air stays in the blowing fan 10, and at the same time, the pressure formed at the top of the air supply pipe 501 The air pressure around the air supply pipe 501 is measured with the sensor 501a (S500).

At this time, the air supply pipe 501 of the lifting sealing cylinder 500 supplies air at a predetermined pressure for a predetermined time into the blowing fan 10, and the air supply pipe 501 around the pressure sensor 501a. Measure the air pressure of the

That is, the air supply pipe 501 supplies 4.2Kpa of pressure air into the blowing fan 10 for a time period of 6 to 10 seconds, and while supplying this 4.2Kpa of pressure air, the pressure sensor 501a) As a result, the air pressure around the air supply pipe 501 is measured for a period of 6 seconds to 10 seconds.

Then, the air pressure value measured by the pressure sensor 501a is transmitted to the determination device 600 installed outside the housing 100, and at this time, the air pressure value measured by the pressure sensor 501a in the determination device 600 is transmitted. The air pressure and the first reference pressure (P1) and the second reference pressure (P2) input to the discriminating device (600) are compared and calculated, and the first reference pressure (P1) and the second reference pressure (P2) are It determines the type of the corresponding bearing (B) (S600).

Here, the determining device 600 compares and calculates the air pressure measured by the pressure sensor 501a with the first reference pressure P1 and the second reference pressure P2, and measures the pressure sensor 501a. If the applied air pressure corresponds to the first reference pressure (P1), it is determined as the first bearing (B1), and when the air pressure measured by the pressure sensor (501a) corresponds to the second reference pressure (P2), the second It is judged by the bearing (B2).

That is, while supplying air at a pressure of 4.3 Kpa into the blowing fan 10 through the air supply pipe 501, the pressure sensor 501a measures the air pressure around the air supply pipe 501, If the air pressure measured by the pressure sensor 501a is 3.9Kpa or more, which is the first reference pressure P, it is determined that the bearing B in the blower fan 10 is the first bearing B1, and the If the air pressure measured by the pressure sensor 501a is within 3.6Kpa to 3.8Kpa, which is the second reference pressure P2, it is determined that the bearing (B) in the blower fan 10 is the second bearing (B2). , to determine the type of the bearing (B).

At this time, the pressure sensor (501a) measures the air pressure discharged through the air supply pipe (501) or the air pressure in the blowing fan (10) around the air supply pipe (501), the determination device (600) to be transmitted to

Here, the air pressure value around the air supply pipe 501 measured by the pressure sensor 501a is the blower fan at a predetermined air pressure supplied into the blowing fan 10 through the air supply pipe 501 . (10) It is the remaining air pressure value after subtracting the amount of air leaking through the bearing (B).

At this time, the remaining air pressure value minus the amount of leaked air from the predetermined air pressure is the air supply pressure supplied into the blowing fan 10 through the air supply pipe 501 or the pressure staying inside the blowing fan 10. it is preferable

Meanwhile, while supplying air at a pressure of 4.3Kpa into the blowing fan 10 through the air supply pipe 501, the pressure sensor 501a measures the air pressure around the air supply pipe 501, If the air pressure measured by the pressure sensor 501a is 3.6Kpa or less, which is the second reference pressure P of the determining device 600, it is determined that the bearing B in the blower fan 10 is defective, and an external display (not shown) indicates whether there is a defect.

Here, the first bearing B1 corresponding to the first reference pressure P1 input to the discrimination device 600 is a DD bearing, and the second bearing corresponding to the second reference pressure P2 (B) is a ZZ bearing, and it is determined whether the air pressure measured by the pressure sensor 501a corresponds to either the first reference pressure P1 or the second reference pressure P2, and the first , the type of the bearing (B) is determined based on the values of the second reference pressures (P1 and P2).

In the above, the pressure of the air supplied into the blowing fan 10 through the air supply pipe 501 is 4.2Kpa, and this supply time is 6 seconds to 10 seconds, and the pressure sensor 501a. The time for measuring the air pressure around the furnace air supply pipe 501 is 6 seconds to 10 seconds, the first reference pressure P1 input to the discrimination device 600 is 3.9Kpa or more, and the second reference It has been described as an example that the pressure P2 is formed within 3.6Kpa ~ 3.8Kpa, but this time and pressure value can be adjusted by the user's setting.

As described above, while supplying air of a predetermined pressure into the blowing fan 10 through the air supply pipe 501 of the lifting sealing cylinder 500, the pressure sensor 501a measures the air pressure around the air supply pipe 501, The method of determining the type of bearing B by comparing and calculating the air pressure measured by the pressure sensor 501a and the first reference pressure P1 and the second reference pressure P2 input to the discrimination device 600 is , by comparing the air pressure around the air supply pipe 501 measured by the pressure sensor 501a with the first reference pressure P1 or the second reference pressure P2 of the determining device 600, and calculating the first reference pressure It is possible to determine the type of bearing (B) corresponding to (P1) or the second reference pressure (P2). In addition, while measuring the change value of the air pressure around the air supply pipe 501 in real time, the amount of gas leakage through the bearing B can be checked, and the air pressure value measured by the pressure sensor 501a can be checked easily. By checking, it is possible to determine whether the bearing (B) is incorrectly assembled or defective.

The method for determining a bearing for a blower fan according to the present invention described above is not limited to the above embodiment, and anyone with ordinary knowledge in the field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. It has its technical spirit to the extent that it can be implemented with various changes.

10: blowing fan 12: exhaust port
13: inlet 100: housing
200: seating jig 201: close contact
300: sealed cylinder 301: first cylinder body
302: first rod 302a: sealing plate
400: jig cylinder 401: second cylinder body
402: second rod 402a: pressure jig
500: lifting sealing cylinder 501: air supply pipe
501a: pressure sensor 600: discrimination device
B : Bearing B1 : 1st bearing
B2: 2nd bearing P1: 1st reference pressure
P2: second reference pressure

Claims (8)

a first process (S100) of seating the blower fan 10 on a seating jig 200 installed on the bottom surface of the housing 100;
A second to block the exhaust port 12 of the blowing fan 10 with the sealed cylinder 300 by horizontally moving the sealing cylinder 300 installed on one side inside the housing 100 in the direction of the blowing fan 10 . process (S200);
A third that horizontally moves the jig cylinder 400 installed on the other side inside the housing 100 in the direction of the outer surface of the blowing fan 10, and presses and fixes the upper outer surface of the blowing fan 10 with the jig cylinder 400 process (S300);
The lifting sealing cylinder 500 installed on the bottom surface of the housing 100 is moved in the direction of the inlet 13 formed to be perpendicular to the exhaust port 12 of the blower fan 10 seated on the seating jig 200. , a fourth process (S400) of sealing the inlet (13) with the lifting sealing cylinder (500);
A pressure sensor installed at the end of the air supply pipe 501 while supplying air of a predetermined pressure to the inlet 13 of the blower fan 10 through the air supply pipe 501 installed in the center of the lifting sealing cylinder 500 a fifth process (S500) of measuring the air pressure around the air supply pipe to (501a); and
The air pressure measured in the fifth process (S500) is transmitted to the determination device 600 installed outside the housing 100, and the air pressure measured by the pressure sensor 501a by the determination device 600 and the A sixth process ( S600);
A bearing identification method for a blower fan, characterized in that it consists of. The method of claim 1,
In the first process (S100),
Determination of a bearing for a blower fan, characterized in that the blowing fan (10) is mounted on the seating jig (200) so that the bearing (11) installed in the blowing fan (10) faces upward with respect to the seating jig (200) Way. The method of claim 1,
In the third process (S300),
The jig cylinder 400 is installed in a different position from the sealing cylinder 300, and is moved toward the outer surface of the upper end of the blowing fan 10 to prevent interference with the hermetic cylinder 300, and the lifting sealing cylinder ( 500) to prevent the blowing fan (10) from being pushed upward in the process of sealing the inlet (13) of the blowing fan (10). The method of claim 1,
In the fifth process (S500),
The air supply pipe 501 of the lifting sealing cylinder 500 supplies air at a predetermined pressure for a predetermined time into the blowing fan 10, and the pressure around the air supply pipe 501 to the pressure sensor 501a. A method for determining a bearing for a blower fan, characterized in that it is measured for a predetermined time. 5. The method of claim 4,
In the fifth process (S500),
The air supply pipe (501) of the elevating sealing cylinder (500) supplies 4.2Kpa of pressure air into the blowing fan (10) through the inlet (13). The method of claim 1,
In the sixth process (S600),
By comparing and calculating the air pressure measured by the pressure sensor 501a with the determination device 600 and the first reference pressure P1 and the second reference pressure P2,
If the air pressure measured by the pressure sensor 501a corresponds to the first reference pressure P1, it is recognized as the first bearing B1,
If the air pressure measured by the pressure sensor (501a) corresponds to the second reference pressure (P2), it is recognized as a second bearing (B2). 7. The method of claim 6,
The first bearing (B1) corresponding to the first reference pressure (P1) is a DD bearing,
The second bearing (B2) corresponding to the second reference pressure (P2) is a bearing identification method for a blower fan, characterized in that the ZZ bearing. 7. The method of claim 6,
In the sixth process (S600),
The air pressure measured by the pressure sensor 501a and the second reference pressure P2 are compared and calculated by the determining device 600, and the air pressure measured by the pressure sensor 501a is the second reference pressure ( P2) or less, the bearing determination method for a blower fan, characterized in that it is determined that the bearing (B) installed in the blower fan (10) is defective.

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