JP3294589B2 - Filter performance measurement device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter performance measuring apparatus capable of automatically measuring the pressure loss, trapping efficiency, etc. of a filter.

[0002]

2. Description of the Related Art Conventionally, a filter is provided at an air supply port of a building, an underground shopping mall, a tunnel or the like to remove dust, oil, fiber dust, and the like contained in the outside air. Examples of this type of filter include, for example, a frame, and a filter material formed of a nonwoven fabric and glass fibers of resin fibers formed with many folds, and provided in a folded state in the frame. There is. These filters are collected and cleaned at regular intervals to remove dust and the like adhering to the filters and are reused. Cleaning of this type of filter has conventionally been performed automatically by a cleaning device. And the filter washed by this filter washing device is shipped as it is,
Alternatively, it is shipped after measuring the performance of the filter such as pressure loss in order to confirm the effect of cleaning.

[0003]

However, since the performance measurement of the filter, such as pressure loss, is performed manually one by one after being measured by the filter cleaning device,
The operation is extremely complicated.

Accordingly, an object of the present invention is to provide a filter performance measuring device capable of automatically measuring the performance of a filter.

[0005]

In order to achieve the above object, the present invention provides an upstream duct, a downstream duct communicating with the upstream duct, and an air duct in the upstream duct and the downstream duct. Air flow means for flowing air, filter conveying means for automatically conveying a filter between the upstream duct and the downstream duct, pressure loss in the upstream duct and the downstream duct, and pressure in the upstream duct. And a measuring means for measuring at least one of the particle amounts in the downstream duct.

As described above, according to the present invention, there is provided a filter transporting means for automatically transporting a filter between the upstream duct and the downstream duct, and the measuring means comprises: When there is a filter between the ducts, it is configured to measure at least one or more of the pressure loss in the upstream duct and the downstream duct and the amount of particles in the upstream duct and the downstream duct. Therefore, the performance of the filter can be automatically measured.

[0007] In the filter performance measuring apparatus according to the present invention, the conveying means conveys the filter to a lower portion between the upstream duct and the downstream duct, and the filter is conveyed by the first conveying device. And a second conveying device that conveys the filter to between the upstream duct and the downstream duct. The second conveying device further includes a filter disposed between the upstream duct and the downstream duct. It is preferable to include a third transport device configured to transport the filter to a lower position and transporting the filter transported to a lower position between the upstream duct and the downstream duct by the second transport device.

[0008] An apparatus for measuring the performance of a filter according to the present invention comprises:
It is preferable that the apparatus further includes a holding means for holding the filter conveyed by the conveying means between the upstream duct and the downstream duct, and is particularly configured to hold the filter in a sealed state by the upstream duct and the downstream duct. Is preferred. By configuring the filter to be sandwiched between the upstream duct and the downstream duct in this manner, the filter can be fixed, so that accurate and stable performance measurement of the filter can be performed. When sandwiched, more accurate and stable performance measurement of the filter can be performed. The holding means in the present invention includes not only a case where the filter is directly held but also a case where the filter is held via a filter frame.

In the present invention, the holding means includes a duct moving means for moving at least one of the upstream duct and the downstream duct, and a filter provided between the upstream duct and the downstream duct by the transfer device. Detecting means for detecting that the filter is conveyed, and wherein the duct moving means moves at least one of the upstream duct and the downstream duct by the duct moving means when the filter detects the conveying means, and clamps the filter. It is preferred that

Further, in the filter performance measuring apparatus according to the present invention, when the filter is a half size,
Further comprising a lid member carried between the upstream duct and the downstream duct, the upstream duct and the downstream duct,
When the filter is a regular size, the filter is sandwiched in a state in which the filter is in close contact with the filter, and when the filter is a half size, the filter is sandwiched in a state in which the filter is in close contact with the filter and the lid member. Is preferred. With such a configuration, the filter performance measuring apparatus according to the present invention is used regardless of whether the filter is of a regular size (for example, W610 × D290 × H610) or a half size (for example, W350 × D290 × H610). be able to.

Further, in the filter performance measuring apparatus according to the present invention, the air flow means is configured to flow air having a rated air flow suitable for each of the filters depending on whether the filter is a regular size or a half size. Preferably, this allows performance measurements appropriate for the size of the filter.

[0012] Still further, the filter performance measuring apparatus according to the present invention preferably further comprises data notation means for writing data measured by the measurement apparatus on the measured filter. ,
In addition to the measurement data, it is preferable that the filter be further configured to indicate the serial number of the filter, the date of measurement, the number of times of cleaning, and the like. By providing the data notation means in this way, the performance of the filter after cleaning can be easily recognized. In the present invention, the data notation means includes a case where a label on which measurement data and a serial number are described is affixed to the filter or the frame of the filter, and a case where the label is directly written on the filter or the frame of the filter.

Data measured by the measuring means,
It is preferable to further include a storage unit for storing the serial number of the filter, the date of cleaning, the date of measurement, the number of times of cleaning, the scheduled date of next cleaning, and the like. By storing the information, management according to the performance of each filter can be performed. In the case of the performance test after the second cleaning, it is preferable that the storage unit is configured to be able to store the data of the performance measurement performed this time together with the data of the performance measurement performed previously.

The apparatus for measuring the performance of a filter according to the present invention may further include an approval / disapproval unit for accepting / rejecting whether the data measured by the measurement unit satisfies a specified value, and the notation unit includes an approval / disapproval unit. It is preferable to be configured to display the result obtained. By providing such an approval / rejection means and further displaying the result on the filter, it is possible to easily recognize whether or not the filter after cleaning can be reused. Re-clean or discard the filter as described in.

[0015] Preferably, the air flow means is configured to prevent air from flowing between the upstream duct and the downstream duct when the filter is carried between the upstream duct and the downstream duct. , With such a configuration,
When loading the filter between the upstream duct and the downstream duct, the filter can be loaded in a vertical state without tilting the filter.

Further, the filter is preferably a filter cleaned by a filter cleaning device,
Thus, the performance of the filter cleaned by the filter cleaning device can be automatically measured.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of a filter performance measuring apparatus according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a filter performance measuring device according to the first embodiment. The filter measuring apparatus according to the first embodiment includes an upstream duct 1, a downstream duct 2 communicating with the upstream duct 1, and an air flow pump for flowing air into the upstream duct 1 and the downstream duct 2. 3, a transfer device 5 for automatically transferring the measurement filter 4 between the upstream duct 1 and the downstream duct 2, and a pressure loss for measuring a pressure loss in the upstream duct 1 and the downstream duct 2. A measuring device 6, an upstream particle amount measuring device 7 for measuring the amount of particles in the upstream duct 1, a downstream particle amount measuring device 8 for measuring the amount of particles in the downstream duct 2, and a pressure loss measuring device 6 Measurement data measured by the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8,
A label printer 9 for attaching a label on which the serial number of the measurement filter 4 and the date of measurement are printed to the measurement filter 4, a particle supply device 10 for supplying test particles into the upstream duct 1, and air Flow pump 3,
And a control device 11 for controlling operations of the transport device 5, the label printer 9, the particle supply device 10, and the like. The performance of the measurement filter 4 is measured with the measurement filter 4 attached to the frame.

An air circulation pipe 12 is connected to a base end 1a of the upstream duct 1 and is connected to the base end 1a of the upstream duct 1.
A filter 13 that collects the dust of the flowing air is installed inside a. Further, on the downstream side of the filter 13 inside the upstream duct 1, a tip 14 a of an atmosphere pipe 14 communicating with the atmosphere and a tip 15 a of a particle supply pipe 15 connected to the particle supply device 10 are provided. The pipe 14 is connected to an atmosphere intake flange 17 via a first valve 16. This first valve 1
6 is connected to the control device 11. Further, on the downstream side of the tip 15a of the particle supply pipe 15 inside the upstream duct 1, the tip 18a of the upstream particle amount pipe 18 communicating with the upstream particle amount measuring device 7 and the pressure loss measuring device 6 are connected. An upstream pressure measuring section 19 is provided.
An upstream suction pump 20 is provided in the upstream particle amount measuring device 7 communicating with the upstream particle amount pipe 18. The upstream suction pump 20 is connected to the control device 11. By operating the upstream suction pump 20, a part of the particles contained in the air flowing in the upstream duct 1 is reduced to the upstream particle amount. It can be collected in the upstream particle amount measuring device 7 via the pipe 18. Further, the distal end 1b of the upstream duct 1 is configured to be tightly fitted to the outer edge of the frame of the measurement filter 4 when the frame of the measurement filter 4 is sandwiched between the upstream duct 1 and the downstream duct 2. I have.

An air circulation pipe 12 is connected to the distal end 2 b of the downstream duct 2.
“a” is configured to closely fit to the outer edge of the frame of the measurement filter 4 when the frame of the measurement filter 4 is sandwiched between the upstream duct 1 and the downstream duct 2. A downstream pressure measuring unit connected to the distal end 21 a of the downstream particle amount pipe 21 communicating with the downstream particle amount measuring device 8 and the pressure loss measuring device 6 is provided on the base end side inside the downstream side duct 2. 22 are provided. A downstream suction pump 23 is provided in the downstream particle amount measuring device 8 communicating with the downstream particle amount pipe 21. This downstream suction pump 23 is
By operating the downstream suction pump 23, a part of the particles contained in the air flowing in the downstream duct 2 is measured through the downstream particle amount pipe 21 for the downstream particle amount measurement. It can be collected in the vessel 8.

Further, the downstream duct 2 is connected to an air cylinder 24, and the air cylinder 24 is connected to the control device 11. This air cylinder 24
Is configured so that the downstream duct 2 can be moved back and forth in the same linear direction as the flow direction of the air in the upstream duct 1 and the downstream duct 2. By moving the measurement filter 4 in the direction, the case of the measurement filter 4 can be held between the upstream duct 1 and the downstream duct 2 to hold the measurement filter 4. At this time, since the distal end 1b of the upstream duct 1 and the proximal end 2a of the downstream duct 2 are configured to be in close contact with the outer edge of the frame of the measurement filter 4, the upstream duct 1, the measurement filter 4 The downstream duct 2 is communicated in a sealed state.

The air flow pump 3 includes an air circulation pipe 12
And the apparatus for measuring the performance of the filter according to the first embodiment is always in operation during operation. Air circulation pipe 12
A flow meter 25 is provided between the air flow pump 3 and the downstream duct 2, and the flow meter 25 is connected to the control device 11. A three-way valve 26 is provided downstream of the flow meter 25 between the air flow pump 3 and the downstream duct 2 of the air circulation pipe 12. This three-way valve 26
Has one end connected to the outside air intake flange 27 and is connected to the control device 11. Further, a second valve 28 is provided between the air flow pump 3 and the upstream duct 1 of the air circulation pipe 12, and the second valve 28 is connected to the control device 11. And
The air flow pump 3 and the second valve 2 of the air circulation pipe 12
8, a branch pipe 29 is connected. The branch pipe 29 is connected to the third valve 30 connected to the control device 11.
And is connected to the air discharge flange 31 via the air outlet.

The transport device 5 includes a first belt conveyor 32
And a lift conveyor 33 provided adjacent to the first belt conveyor 32, and a second belt conveyor 34 connected to the lift conveyor 33. The first belt conveyor 32, the lift conveyor 33, and the second belt conveyor 34 are provided below the upstream duct 1 and the downstream duct 2, and are connected to the control device 11. The lift conveyor 33 is configured to be able to move up and down in the vertical direction, and is configured to be able to carry the measurement filter 4 between the upstream duct 1 and the downstream duct 2 by moving up. A sensor (not shown) connected to the control device 11 is provided between the upstream duct 1 and the downstream duct 2. The sensor includes a measurement filter 4 that is connected to the upstream duct 1 and the downstream duct. It is configured so that it can be recognized whether or not it exists between the ducts 2.

At the upstream end of the first belt conveyor 32, a first filter sensor 35 for detecting whether or not the measurement filter 4 is fully loaded on the first belt conveyor 32 is provided. At the downstream end of the first belt conveyor 32, a second filter sensor 36 for detecting whether or not there is the measurement filter 4 waiting for measurement is provided. Further, at the upstream end of the second belt conveyor 34, a third filter sensor 37 for detecting whether or not the measurement filter 4 whose measurement has been completed is provided, and at the downstream end of the second belt conveyor 34, Is provided with a fourth filter sensor 38 for detecting whether or not the measurement filter 4 is fully loaded on the second belt conveyor 34. These first to fourth filter sensors 35, 36, 3
7 and 38 are connected to the control device 11, and the control device 11 controls the first belt conveyor 32 when the fourth filter sensor 38 is full when the measurement filter 4 mounted on the second belt conveyor 34 is full. Control is performed so that the lift conveyor 33 and the second belt conveyor 34 are not operated.

Furthermore, above the position where the measurement filter 4 is carried in between the upstream duct 1 and the downstream duct 2, a half-size lid having the same width and depth dimensions as the measurement filter 4. 39 are installed. The half-size lid 39 is provided so as to be able to move up and down in the vertical direction by an elevating device 40. When the half-size cover 39 is lowered, the measurement filter 4 is placed between the upstream duct 1 and the downstream duct 2.
It is configured to be carried in only half the height of. The elevating device 40 is connected to the control device 11 and is controlled to operate when the measurement filter 4 is input to a personal computer 41 described later as having a half size. Therefore, according to the filter performance measuring device according to the first embodiment, even if the measuring filter 4 is half-sized, the measuring filter 4 and the half-sized lid 39 allow the distal end 1b of the upstream duct 1 and the downstream side to be closed. Since the base end 2b of the duct 2 can be filled, performance measurement can be performed regardless of whether the size of the measurement filter 4 is a regular size or a half size. That is, when the upstream filter 1 and the downstream filter 2 sandwich the frame of the filter 4 for measurement, the distal end 1b of the upstream duct 1 and the proximal end 2a of the downstream duct 2 have a regular size. In the case of (1), the frame is tightly fitted to the frame of the measurement filter 4, and when the measurement filter 4 is half size, the frame is tightly fitted to the frame of the measurement filter 4 and the half-size lid 39. Further, depending on whether the measurement filter 4 is of the regular size or the half size, the air flow pump 4 controls the air flowing through the upstream duct 1 and the downstream duct 2 to each size by the control device 11. It is configured to be controlled to an appropriate rated air flow.

The label printer 9 is provided at an end of the second belt conveyor 34 on the side of the lift conveyor 33, at the side or above when the measurement filter 4 is present. The label printer 9 is connected to the personal computer 41 and the control device 11. The personal computer 41 includes a pressure loss measuring device 6,
It is connected to the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8, and a serial number is assigned to the measured measurement filter 4, and these pressure loss measuring device 6, upstream particle amount measuring device 7, The measurement data measured by the downstream particle amount measuring device 8, the cleaning date, the measurement date, the number of cleaning times, the scheduled cleaning date, and the like are stored in association with the serial number. Further, the personal computer 41 calculates the collection rate of the measurement filter 4 from the measurement data measured by the upstream-side particle amount measuring device 7 and the downstream-side particle amount measurement device 8, and calculates the collection ratio.
Is configured to be stored in association with the serial number. Further, the personal computer 41 determines whether or not the calculated trapping rate data and the measurement data measured by the pressure loss measuring device 6 satisfy a specified value. It is configured so that it can be stored in association with the serial number. PC is
If a serial number has already been assigned, the pressure loss, collection rate, result of approval / disapproval of the specified value, cleaning date, measurement date, number of cleanings, scheduled date of the next cleaning, etc. are linked to the serial number. , Stored together with data performed after the previous cleaning. Label printer 9
Is printed with the serial number of the measurement filter 4 stored in the personal computer 41, the pressure loss, the collection rate, the result of approval / disapproval of the specified value, the date of measurement and the number of cleaning times, and a bar code including these information. It is configured such that a label can be created and the label can be attached to the side surface of the frame of the measurement filter 4. A bar code reader 42 is connected to the personal computer 41. The bar code reader 42 reads the bar code printed on the label, and transmits the read information of the measurement filter 4 to the personal computer 41. It is configured as follows.

The particle supply device 10 is connected to a control device 11 and the operation thereof is controlled by the control device 11. The particle supply device is configured to supply standard particles (polydisperse, median diameter: 0.3 μm) into the upstream duct 1 via the particle supply pipe 15. The particle supply pipe 15 is provided with a particle supply valve 55, and a branch pipe 56 is provided to be branched from between the particle supply valve 55 of the particle supply pipe 15 and the particle supply device 10. The branch pipe 56 is connected to an air discharge flange 57 via a discharge valve 58. The particle supply valve 55 and the discharge valve 58 are connected to the control device 11, and the control device 11 is configured to control the opening and closing thereof.

The apparatus for measuring the performance of a filter according to the first embodiment includes a standard particle measurement for measuring the performance of a filter by flowing air containing standard particles and an atmospheric dust measurement for measuring the performance of a filter by flowing air. By switching a switch (not shown) connected to the control device 11, any of standard particle measurement and atmospheric dust measurement can be performed.

Next, the operation of the filter performance measuring apparatus according to the first embodiment will be described with reference to the flowchart shown in FIG. First, the operator selects whether the performance measurement of the filter to be performed this time is the standard particle measurement or the atmospheric dust measurement, and turns on the switch connected to the control device 11 to one of the measurements. Next, the operator removes the measurement filter 4 cleaned by the filter cleaning device from the cleaning case, and inputs the size (regular size or half size) of the measurement filter 4 to the personal computer 41 (S100).
When the measurement filter 4 is washed for the second time or more, that is, when the label is attached to the frame of the measurement filter 4 by the label printer 9, the operator puts the bar code described on the label on the bar. The information about the size of the measurement filter 4 is input to the personal computer 41 by being read by the code reader 42. The measurement filter 4 has a frame on the outer edge of the frame, and the operator mounts the measurement filter 4 on the first belt conveyor 32 with the frame attached (S101). The control device 11 operates the first belt conveyor 32 to transport the boarded measurement filter 4 to the downstream end of the first belt conveyor 32 (S102). When the measurement filter 4 is transported to the downstream end of the first belt conveyor 32, the second filter sensor 36 detects the measurement filter 4 and sends a signal to the control device 11. Control device 11
When receiving a signal from the second filter sensor 36, the first belt conveyor 32 and the lift conveyor 33 are operated, and the transported measurement filter 4 is lifted by the lift conveyor 33.
Of the measurement filter 4 by moving the lift filter 33 up to the center position of the
And between the downstream duct 2 (S103).

The air flow pump 3 is always operating while the filter performance measuring device according to the first embodiment is operating.
The operation is also performed when the measurement filter 4 is carried in between the upstream duct 1 and the downstream duct 2. At this time, the control device 11 sets the three-way valve 26 to the outside air intake flange 27 and the air flow. Since the state where the pump 3 is connected, the state where the second valve 28 is closed, and the state where the third valve 30 is opened are controlled, the air taken in from the outside air intake flange 27 by the air flow pump 3 is The three-way valve 26 → the air flow pump 3 → the third valve 30 → the air discharge flange 31 and the outside air are circulated. Therefore, since air does not pass between the upstream duct 1 and the downstream duct 2, the measurement filter 4 removes air from the upstream duct 1 and the downstream duct 2 when carrying the air between the upstream duct 1 and the downstream duct 2. The measurement filter 4 is not tilted due to the flow, and the filter 4 for measurement is
And between the downstream duct 2.

When the measuring filter 4 is carried between the upstream duct 1 and the downstream duct 2, the sensor detects that the measuring filter 4 is located between the upstream duct 1 and the downstream duct 2. Sends a signal to the control device 11 (S10
4). Next, the control device 11 recognizes whether the measurement filter 4 is a regular size or a half size from the data of the measurement filter 4 input to the personal computer 41 (S10).
5). When the measurement filter 4 is a half size, the control device 11 operates the elevating device 39 to carry the half size lid 39 between the upstream duct 1 and the downstream duct 2 (S106). When the filter 4 for measurement is of the regular size or when the half-size lid 39 is carried in, the control device 11 operates the air cylinder 24 to move the downstream duct 2 toward the filter 4 for measurement. The end 1b of the upstream duct 1 and the downstream duct 2
The measurement filter 4 is sandwiched and held by the base end 2a (S107).

Next, the controller 11 recognizes whether the switch connected to the controller 11 is in the standard particle measurement or the atmospheric dust measurement (S108). In the case of atmospheric dust measurement, the process proceeds to step 114. In the case of standard particle measurement, first, the control device 11 opened the second valve 28 with the three-way valve 26 connected to the downstream duct 2 and the air flow pump 3, the first valve 16 closed, and the like. In this state, control is performed so that the third valve 30 is closed (S10).
9). Therefore, the air in the circulation system is changed by the air flow pump 3 to the air flow pump 3 → the second valve 28 → the upstream duct 1 → the measurement filter 4 → the downstream duct 2 → the flow meter 2
5 → three-way valve 26 → air flow pump 3 circulates. At this time, the control device 11 controls the air flow pump 3 based on whether the measurement filter 4 is a half size or a regular size, and supplies air having a rated air volume suitable for each to the upstream side duct 1 and It is caused to flow to the downstream duct 2.
Next, when the air circulates as described above, the controller 11
Controls the state in which the particle supply valve 55 is opened and the discharge valve 58 is closed, the particle supply device 10 is operated, and the standard gas is supplied from the particle supply device 10 to the upstream duct 1 through the particle supply pipe 15. Supply particles (S1
10). When the standard particles are supplied from the particle supply device 10, the air containing the standard particles circulates through the upstream duct 1, the measurement filter 4, the downstream duct 2, and the like. Next, the control device 11 operates the upstream suction pump 20 and the downstream suction pump 23 for a predetermined time, for example, 60 seconds, and causes the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8 to output the upstream particle amount. Air containing standard particles circulating through the amount pipe 18 and the downstream particle amount pipe 21 is collected, and the amount of particles in the upstream duct 1 and the amount of particles in the downstream duct 2 are measured. Then, the measurement data is sent to the personal computer 41 (S111). At the same time, the control device 11
Causes the pressure loss measuring device 6 to measure the pressure loss in the upstream duct 1 and the pressure loss in the downstream duct 2, and sends the measurement data to the personal computer 41 (S111). The personal computer 41
The collection rate of the measurement filter 4 is calculated from the measurement data of the amount of particles in the upstream duct 1 and the amount of particles in the downstream duct 2, and the measurement data and the specified value are determined. The number, the measurement data of the pressure loss and the collection rate, and the measurement data and the result of the approval / disapproval of the specified value are stored in association with each other (S112). Here, the filter performance measuring device according to the first embodiment ends the standard particle measurement.

When the standard particle measurement is completed, the control unit 11
First, the standard particles are discharged from the discharge flange 57 by controlling the state in which the particle supply valve 55 is closed and the discharge valve 58 is opened. At this time, the control device 11
Operates the particle supply device 10 continuously. Next, the control device 11 operates the label printer 9 to measure the serial number of the measurement filter 4 stored in the personal computer 41, the measurement data of the pressure loss and the collection rate of the standard particle measurement and the atmospheric dust measurement, and the regulation. The data label is created based on the result of the approval or disapproval of the value (S113), and the process proceeds to step 117. When the switch connected to the control device is in the atmospheric dust measurement, the control device 11
6 is connected to the downstream duct 2 and the air flow pump 3, and the second valve 28 is opened to the state where the first valve 16 is opened.
Is closed and the third valve 30 is opened (S114). Therefore, the air sucked by the air flow pump 3 is supplied to the outside air intake flange 17 → the first valve 16 → the upstream duct 1 → the measurement filter 4 → the downstream duct 2 → the flow meter 25 three-way valve 26 → the air flow. Pump 3 →
Third valve 30 → air discharge flange 31 and air flow. Next, the controller 11 controls the upstream suction pump 20
By operating the downstream suction pump 23 for a predetermined time period, for example, 60 seconds, the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8 are connected via the upstream particle amount pipe 18 and the downstream particle amount pipe 21. By collecting the flowing air, the amount of particles in the upstream duct 1 and the amount of particles in the downstream duct 2 are measured, and the measured data is sent to the personal computer 4.
1 (S115). At the same time, the control device 1
1 causes the pressure loss measuring device 6 to measure the pressure loss in the upstream duct 1 and the pressure loss in the downstream duct 2, and sends the measurement data to the personal computer 41 (S115). PC 41
Calculates the trapping rate of the measurement filter 4 from the measurement data of the amount of particles in the upstream duct 1 and the amount of particles in the downstream duct 2, determines whether or not the measurement data and the specified value are acceptable, And the measurement data of the pressure loss and trapping rate, and the measurement data and the result of approval / disapproval of the specified value are stored in association with each other (S116). Here, the first
Atmospheric dust measurement by the filter performance measuring apparatus according to the embodiment ends.

Whether a data label is created (S11)
3) Or, when the atmospheric dust measurement is completed (S116), the control device 11 closes the second valve 28 with the three-way valve 26 connected to the outside air intake flange 27 and the air flow pump 3. Next, control is performed so that the third valve 30 is opened (S117). Therefore, the outside air sucked by the air flow pump 3 is supplied to the outside air intake flange 27 → the three-way valve 26.
→ The air flow pump 3 → the third valve 30 → the air discharge flange 31 circulates. Next, the control device 11 operates the air cylinder 24 to move the downstream duct 2 in a direction away from the measurement filter 4 so that the upstream duct 1 and the downstream duct 2 sandwich the measurement filter 4. It is released (S118). Next, the control device 11 lowers the lift conveyor 33 and sets the measurement filter 4 to the second position.
The sheet is conveyed to the belt conveyor 34 (S119). When the measurement filter 4 is transported to the second belt conveyor 34,
The third filter sensor 37 recognizes that the measurement filter 4 exists at the end of the second belt conveyor 34 on the side of the lift conveyor 33, and transmits a signal to the control device 11. When the control device 11 receives the signal from the third filter sensor 37 in the case of the standard particle measurement, the control device 11 operates the label printer 9 to copy the data label created in step 113 from the side or above the measurement filter 4. Paste (S1
20). In the case of atmospheric dust measurement, the process proceeds to step 121 without performing step 120. Next, the second belt conveyor 34 is operated to convey the measurement filter 4 (S121).

Next, the control device 11 causes the second filter sensor 36 to detect whether or not the measurement filter 4 exists at the downstream end of the first belt conveyor 32 (S 2).
122) If present, return to step 103,
The performance of the measurement filter 4 in the waiting state is measured. In this case, since the particle supply device 10 is continuously operating, the control device 11 only needs to control the opening and closing of the particle supply valve 55 and the discharge valve 58 in step 110. If the measurement filter 4 does not exist, the operator inputs to the control device 11 whether or not to continue the measurement (S
123) If the measurement is not continued, the particle supply device 11 is stopped (S124), and the operation of the filter performance measuring device according to the first embodiment is stopped. If the measurement is to be continued, the process returns to step 100, where the mounting of the measurement filter 4 and the performance measurement are performed again.

In the first embodiment, since the personal computer 41 stores the serial number, pressure loss, collection rate, and the like of each of the measurement filters 4, the history of each of the measurement filters 4 can be managed. It is possible to manage the number of times of cleaning and the time of next cleaning. In the filter performance measuring device according to the first embodiment, the measurement data and the specified value are approved or rejected, and a label on which the result is printed is affixed to the measurement filter 4. It can be easily recognized whether the measurement filter 4 after cleaning can be reused. If the measurement filter 4 cannot be reused, the measurement filter 4 can be re-cleaned with reference to the number of times of cleaning. Or discard the measurement filter.

Next, a second embodiment of the filter performance measuring apparatus according to the present invention will be described with reference to the drawings. Second
The filter performance measuring device according to the first embodiment is different from the first embodiment in that an air supply device 43 is provided as a device for flowing air into the upstream duct 1 and the downstream duct 2 as shown in FIG. And different. The air supply device 43 is formed in a box shape, and has a housing 44 communicating with the base end 1a of the upstream duct 1, an air supply pump 45 for feeding air into the upstream duct 1, and an opening 46 at the center. A filter 47 is provided between the air supply pump 45 and the upstream duct 1 over the entire surface of the housing 44, an opening / closing door 48 for opening and closing the opening 46 of the filter 47, and provided outside the housing 44. An outside air intake flange 49; an air intake pipe 50 communicating the outside air intake flange 49 with the air supply pump 45; an opening 46 of the air supply pump 45 and the filter 47;
An air supply pipe 51 that communicates with the
Air circulation pipe 52 that communicates with the air supply pipe 51
An air supply valve 53 provided downstream of a branch point of the air supply pipe 51 with the air circulation pipe 52, an air circulation valve 54 provided on the air circulation pipe 52,
It has. Then, the air supply pump 45, the door 4
8. The air supply valve 53 and the air circulation valve 54 are connected to the control device 11, and their operation and operation are controlled.

In the second embodiment, the tip 15a of the particle supply pipe 15 of the particle supply
The particle supply pipe 15 is provided with a particle supply valve 55. Further, a branch pipe 56 branches from the particle supply valve 55 of the particle supply pipe 15 and the particle supply device 10, and the branch pipe 56 communicates with an air discharge flange 57. The branch pipe 56 is provided with a discharge valve 58. Particle supply valve 55 and discharge valve 58
Are connected to the control device 11, and are configured such that their opening and closing are controlled by the control device 11.

In the second embodiment, the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8 have a built-in pump for sucking particles in the upstream duct 1 or the downstream duct 2. I have. Further, the upstream side duct 1 and the downstream side duct 2 of the second embodiment are provided with an upstream side filter paper holder 59 and a downstream side filter paper holder 60 capable of holding the filter paper therein, respectively. The holder 59 and the downstream filter paper holder 60 are configured to be detachable from the upstream duct 1 and the downstream duct 2, and are configured to be able to exchange the filter paper held respectively. Furthermore, at the tip 2b of the downstream duct 2,
An air discharge flange 61 is provided via the flow meter 25.

Next, the operation of the filter performance measuring apparatus according to the second embodiment will be described. First, when loading or unloading the filter 4 between the upstream duct 1 and the downstream duct 2, the control device 11 controls to close the air supply valve 53 and open the air circulation valve 54. Therefore, the air taken in from the outside air intake flange 49 is circulated through the air circulation pipe 52 by the air supply pump 45.

Next, when performing standard particle measurement, the control device 11 opens the air supply valve 53 and sets the air circulation valve 5
4, the particle supply valve 55 is opened, and the discharge valve 58 is opened.
Is controlled, and the opening / closing door 48 is closed. Therefore, the air taken in from the outside air intake flange 49 is
Air supply pump 45 → air supply valve 53 → filter 4
7, the particles are supplied from the particle supply device 10, and flow from the upstream duct 1 → the measurement filter 4 → the downstream duct 2 → the air discharge flange 61.

When measuring the atmospheric dust, the control device 11 opens the air supply valve 53 and sets the air circulation valve 5.
4, the particle supply valve 55 is closed, and the discharge valve 58 is closed.
And control is performed to open the opening / closing door 48 or to stop the operation of the particle supply device 10 itself. Therefore, in the atmospheric dust measurement, the particle supply device 1
From 0, the particles are not supplied to the air supply device 43 and are discharged from the air discharge flange 57 or the generation itself stops. Further, in the second embodiment, the trapping rate of the measurement filter 4 for the measurement of atmospheric dust is determined by using the upstream filter paper holder 59 and the upstream filter paper holder 59 without using the upstream particle amount measuring device 7 and the downstream particle amount measuring device 8. This is performed by holding the filter holder 60 on the downstream side, observing a difference in color from the standard color sample, and employing the collection rate described in the standard color sample.

[0042]

As described above, according to the present invention, there is provided a filter transporting means for automatically transporting a filter between the upstream duct and the downstream duct, and the measuring means is provided with a filter provided between the upstream duct and the downstream duct. When a filter is present between the downstream ducts, it is configured to measure at least one of a pressure loss in the upstream duct and the downstream duct and a particle amount in the upstream duct and the downstream duct. Therefore, it is possible to provide a filter performance measuring device capable of automatically performing a filter performance test.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing a first embodiment of a filter performance measuring apparatus according to the present invention.

FIG. 2 is a flowchart showing an operation of the filter performance measuring device according to the first embodiment.

FIG. 3 is a conceptual diagram showing a second embodiment of the filter performance measuring device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upstream duct 2 Downstream duct 3 Air flow pump 4 Measurement filter 5 Conveyor belt 6 Pressure loss measuring device 7 Upstream particle amount measuring device 8 Downstream particle amount measuring device

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Osamu Minamino 2-254-2 Yoshinohara, Omiya-shi, Saitama Japan Cleantech Co., Ltd. (58) Field surveyed (Int. Cl. ⁷ , DB name) G01N 15 / 08 B01D 29/00

Claims (12)

(57) [Claims] An upstream duct, a downstream duct communicating with the upstream duct, air flow means for flowing air into the upstream duct and the downstream duct, and Filter transporting means for automatically transporting the filter to the space between the upstream duct and the downstream duct, when a filter is present between the upstream duct and the downstream duct, the pressure loss in the upstream duct and the downstream duct and the upstream duct And a measuring means for measuring at least one of the amount of particles in the downstream duct. 2. The apparatus according to claim 1, wherein said transport means comprises: a first transport device for transporting the filter to a lower portion between the upstream duct and the downstream duct; and an upstream duct and a downstream duct for transporting the filter transported by the first transport device. 2. The filter performance measuring device according to claim 1, further comprising: a second transport device that transports the filter to a position between the first and second filters. 3. The apparatus according to claim 1, further comprising a holding means for holding the filter carried by said carrying means between said upstream duct and said downstream duct.
Or the performance measuring device for a filter according to 2. 4. The holding means comprises: duct moving means for moving at least one of the upstream duct and the downstream duct; and a filter for conveying the filter between the upstream duct and the downstream duct by the conveying device. Detecting means for detecting that the filter has been detected, and when the filter is detected by the detecting means, at least one of the upstream duct and the downstream duct is operated by the duct moving means to sandwich the filter. 4. The apparatus for measuring the performance of a filter according to claim 3, wherein: 5. The apparatus according to claim 5, further comprising a cover member carried between said upstream duct and said downstream duct when said filter is half-size, wherein said upstream duct and said downstream duct have a filter of a regular size. In this case, the filter is sandwiched in a state in which the filter is in close contact with the filter, and in a case where the filter is half size, the filter is sandwiched in a state in which the filter is in close contact with the filter and the lid member. Item 4. A filter performance measuring device according to Item 3. 6. The air flow means according to claim 1, wherein the air flow means is configured to flow air having a rated air volume suitable for each filter depending on whether the size of the filter is a regular size or a half size. Filter performance measuring device. 7. The filter performance measuring apparatus according to claim 1, further comprising a data notifying means for writing data measured by said measuring means on the measured filter. 8. The filter performance measuring apparatus according to claim 7, wherein said data notation means causes the filter to further indicate the serial number of the filter. 9. The filter performance measuring apparatus according to claim 8, further comprising storage means for storing data measured by said measuring means and a serial number of said filter. 10. An apparatus according to claim 1, further comprising: an approval / rejection unit for accepting / rejecting whether the data measured by said measurement unit satisfies a prescribed value, wherein said notation unit causes a result of the approval / disapproval by said notation unit to be indicated. An apparatus for measuring the performance of a filter according to claim 7. 11. The air flow means is configured to prevent air from flowing between the upstream duct and the downstream duct when the filter is carried in between the upstream duct and the downstream duct. The filter performance measuring device according to any one of claims 1 to 10. 12. The filter performance measuring device according to claim 1, wherein said filter is a filter cleaned by a filter cleaning device.