JP2001041521A - Air shower device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and surely remove dust, etc., adhering to clothes, etc., to reduce the frequency of filter exchanges and dust removing by reducing the clogging of a filter as much as possible, to easily and safely carry out the removing work of a toxic substance such as the dioxine, etc., and to surely treat heavy dust, etc., fallen on the floor of an air shower room. SOLUTION: In the main body 1 of an air shower device, a shower room 2 and an air cleaning room 3 which is communicated with the room 2 through an air passage 4 are demarcated, and a bag filter 7 and a high-efficiency filter 11 are provided with a vertical interval in between in the room 3. In addition, a blower 8 is provided between the filters 7 and 11. Dust-containing air circulated to the air cleaning room 3 from the shower room 2 through the passage 4 is successively filtrated by means of the bag filter 7 and high-efficiency filter 11. The clean air from the filter 11 is blown into the shower room 2 from an air nozzle 15 and blows off dust, etc., adhering to clothes, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air shower device which is preferably installed at an entrance to a contaminated environment space such as an incineration facility or an entrance to a clean room.

[0002]

2. Description of the Related Art Dust and various germs attached to clothes of workers are installed at each of the above-mentioned entrances and taken off by an air shower which is blown into a shower room from an air nozzle by a blowing action of a blower. After filtering the dust-containing air stream containing the dusts and the like that have been washed off with a filter,
2. Description of the Related Art An air shower device configured to recirculate and jet air from an air nozzle into a shower chamber again is conventionally known as disclosed in, for example, Japanese Utility Model Laid-Open No. 59-180788.

[0003]

The above-mentioned conventional air shower apparatus is generally configured to be installed at an entrance of a clean mull or the like, and is used in a relatively clean environment. However, the dust removed by the air shower is light in weight and the filter is not so dirty.

[0004] However, when work is performed in an environment where incineration facilities and the like are present, the dust attached to clothes such as work clothes is very dirty, and many harmful substances such as dioxin are also attached. Therefore, if the above conventional air shower device is used in such an environment, the filter will not be able to sufficiently exhibit the dust collecting function, and the filter will be clogged quickly, making it necessary to replace the filter or remove dust. It has to be performed frequently, and handling of harmful substances such as dioxin is very troublesome and dangerous.

[0005] In addition, of the dust that has been blown off clothes and the like by the injection of the air shower, heavy dust is not collected and falls on the floor (bottom surface) of the air shower chamber, and gradually accumulates. There is also a problem that dust that has fallen on the floor surface floats again, re-adheres to clothing, etc., and re-contaminates. Therefore, an immediate solution to these various problems has been desired.

Accordingly, a technical problem of the present invention is to easily and reliably remove dust adhering to clothes even when the work is performed in an environment where an incineration facility or the like exists. It is possible to reduce the number of times of filter replacement and dust removal work by minimizing filter clogging as much as possible, and to easily and safely remove dioxin and other harmful substances. It is an object of the present invention to provide an air shower device that is devised so that heavy dust falling on the floor of an air shower chamber can be reliably processed.

[0007]

Means taken by the present invention to solve the above-mentioned technical problems are as follows.

In the main body, a shower chamber and an air purification chamber communicating with each other through an air flow passage are defined, and air sucked from the shower chamber through the air flow passage into the air purification chamber by a blower is filtered by a filter. An air shower device configured to circulate and send out from the air nozzle into the shower chamber by the blowing action of the blower to remove dust adhering to clothes and the like of the entrant,

(1) A primary filter using a bag filter and a secondary filter using a high-performance filter are provided in the air purification chamber at an interval above and below, and are provided between the primary filter and the secondary filter. After providing a blower, the air sucked from the shower chamber into the air purification chamber through the air flow passage by the suction action of the blower is filtered by a primary filter, and then passed through the secondary filter by the blowing action of the blower, thereby providing a more advanced filter. To be configured to provide filtration. (Claim 1)

(2) The bottom plate of the shower chamber is constituted by a ventilation plate such as a perforated plate or a lattice plate, and a shooter chamber communicating with the air purification chamber through an air flow passage is provided below the ventilation plate. The suction function of the blower provided in the above-mentioned is configured to reach the shooter chamber. (Claim 2)

(3) An opening communicating from the shower chamber to the air passage is an air passage, and an opening communicating from the shooter chamber to the air passage is an air inlet. The opening and closing are alternately opened and closed by an inflow switching valve so that when one opens, the other closes.
(Claim 3)

(4) When entry into the shower chamber is detected, the air flow opening of the shower chamber is opened and the air inlet of the shooter chamber is closed, and the air filtered by the filter is injected from the air nozzle by the operation of the blower. On the other hand, when the exit from the shower chamber is detected, the air flow opening of the shower chamber is closed, the air inlet of the shooter chamber is opened, and the suction action of the blower is switched to the shooter chamber. (Claim 4)

(5) A dust filter is provided on a bag filter constituting the primary filter, a dust collection box is provided below the bag filter, and a suction hose of a vacuum cleaner or a dust collector is connected to the dust collection box. The dust collection box is capable of accommodating a neutralizing agent or adsorbent for exhaust gas, and the neutralizing agent or the adsorbing agent is adsorbed on the upper part of the dust collection box. Provide an injection device for compressed air for pre-coating that allows the agent to be blown up freely. (Claim 5)

(6) A hand-held air nozzle is provided inside the shower chamber, and one compressor is provided for the air nozzle, the dust removing device for the bag filter, and the injection device for blowing up the neutralizing agent or the adsorbent. To supply the compressed air by appropriately switching the pressure. (Claim 6)

(7) An activated carbon filter is provided at the next stage of a secondary filter using a high-performance filter. (Claim 7)

According to the first aspect of the present invention, the dust-containing airflow introduced from the shower chamber by the operation of the blower is first filtered by a primary filter using a bag filter, and then the high-performance filter is used. Even if dusts adhere to clothing in an environment where there is an incineration facility, etc., they are easily and reliably filtered after being blown off with an air shower, because they are filtered with a secondary filter using In addition to exhibiting an excellent dust collecting effect, the presence of a bag filter can slow down the clogging of a high-performance filter (secondary filter), thereby reducing the number of filter replacements and dust removal operations. A blower is installed between the primary filter and the secondary filter to provide suction for the primary filter and blow air for the secondary filter. Therefore, it is possible to efficiently use one blower and exhibit an excellent filtering action.

According to the means according to claim 2 described in the above (2), even if heavy dust falls on the floor (bottom surface) of the shower chamber due to the removal of the air shower.
Since this can be sucked into the lower shooter chamber through a ventilation plate such as a perforated plate or a grid plate, heavy dust accumulates on the floor and re-adheres to clothing due to floating (recontamination). To be able to solve.

According to the means according to claim 3 described in the above (3), the suction of dust removed by the air shower and the collection of heavy dust dropped on the floor surface of the shower chamber can be performed by 1 Since the suction force of the two blowers is switched by the inflow switching valve, it is possible to minimize the capacity of the blower and make the most of it.

According to the means according to claim 4 described in the above (4), when the entry of a person into the shower room is detected, the air shower is automatically ejected to dust off the dust adhered to the clothes and the like. When no one is left from the shower chamber, the suction force is switched to the shooter chamber under the floor to collect the dust, so that the capacity of the blower can be effectively used.

According to the means according to claim 5 described in the above (5), the neutralizing agent or the adsorbent is accommodated in the dust collection box, and is blown up by the injection device and adhered to the bag filter of the primary filter. Thereby, the harmful gas can be neutralized or adsorbed by the primary filter, and the dust blown off from the bag filter to the dust collecting box by the dust removing device can be collected as it is in the vacuum cleaner or the dust collector through the hose connection port. Therefore, it is possible to safely collect harmful substances such as dioxin without scattering to the outside.

According to the means according to claim 6 described in the above (6), a hand-held air nozzle is provided in the air nozzle for injecting the filtered air, so that the air can be applied to a highly contaminated portion such as clothing. Intensive jetting of air, and a high-pressure air is supplied from a compressor to this hand-held air nozzle, which further enhances the local air shower effect. It is also possible to use the high-pressure air from the compressor for dust removal of the bag filter and for blowing up the neutralizer or adsorbent. Enables downsizing.

According to the means according to claim 7 described in the above (7), since an activated carbon filter is used in addition to the high performance filter, for example, odorous substances such as ammonia and harmful substances such as dioxin can be adsorbed and collected. In addition, the air after filtration is circulated to the shower chamber as it is, so that it can be used safely.

As described above, the above (1) to
By solving the above technical problem by means of (7),
The problem of the conventional technique can be solved.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an air shower apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating the entirety of the present invention.
The whole shown in is the main body of the air shower device.
And 3 denote a shower chamber and an air purifying chamber defined inside the main body 1, 2 H denotes an inside of the shower chamber 2 configured to allow entry of a person, and 4 denotes air communicating between the two chambers 2 and 3. The flow passages 1H are spaced passages between the shower chamber 2 and the main body 1 provided so as to surround the periphery of the shower chamber 2, and these passages constitute air ducts for clean air.

Reference numeral 2V denotes a floor plate (bottom plate) of the shower chamber 2 made by using a ventilation plate such as a perforated plate or a lattice plate, 2F denotes a shooter room provided below the floor plate 2V, and 2E denotes a bottom surface of the shooter room 2F. A shooter plate provided diagonally at 2X, a communication chamber of the shooter chamber 2F provided below the air flow path 4; 4A, an air flow opening of the shower chamber 2 opened to communicate with the air flow path 4; 4C is also the air flow passage 4
The shooter chamber 2 opened at the bottom so as to communicate with
The air inlets 4B and 4B indicate the air inlets of the air purifying chamber 3 which are also opened to communicate with the air flow passage 4.

Reference numeral 5 designates a switching operation by an operating portion 5T (see FIG. 2) such as a cylinder or a motor, so that the air flow opening 4A and the air flow opening 4C are alternately arranged so that if one opens, the other closes. Reference numeral 6 denotes a check valve which can be opened and closed so that it can be opened and closed at the air inlet 4B.

Next, 3W is a partition plate which divides the inside of the air purification chamber 3 into a lower dust collecting chamber 3A and an upper cleaning chamber 3B, and this partition plate 3W has the dust collecting chamber 3A. A bag filter 7 which constitutes a primary filter is suspended toward the inside, and a dust removal device 9 (blow pipe) which can blow compressed air for dust removal into the bag filter 7 on the side of the clean room 3B. And a blower 8 rotated by a motor 8M, and a filter chamber 3C communicating between the clean room 3B and the air duct 1H.
A secondary filter comprising a high-performance filter 11 and an activated carbon filter 12 is provided, and the blower 8 described above is disposed between the primary filter and the secondary filter.

Reference numeral 13 denotes a dust collection box provided below the dust collection chamber 3A. Above the box 13, a neutralizing agent or adsorbent PC contained in the box 13 is provided.
Is blown upward, so that the neutralizing agent and the adsorbent P
C is provided with a pre-coat compressed air jetting device 10 capable of adhering C to the surface of the bag filter 7.
Further, a hose connection port 1 to which a dust collection hose 34 of the illustrated vacuum cleaner 30 can be connected is provided on a side surface of the box 13.
The 3P is protruded, so that the dust collected in the dust collection box 13 can be safely collected on the cleaner 30 side without scattering to the surroundings.

The inside of the illustrated vacuum cleaner 30 is divided into a clean room 30T and a dust collecting room 30S.
A blower 31 is provided in the OT to be sucked and rotated by a motor 31M, and a filter 32 is provided in the dust collecting chamber 30S. The dust sucked and collected from the dust collecting box 13 is put into a dust pack 33 and taken out to the outside. However, the illustrated vacuum cleaner 30 is an example of an embodiment, and dust may be collected using a cleaner other than the illustrated configuration. Alternatively, a dust collector may be used to collect dust. Alternatively, the selection is optional.

Numerals 15 are air nozzles mounted on the wall surface of the shower chamber 2 so as to face the interior 2H, respectively. These air nozzles 15 are arranged so that air flows from the shower chamber 2 by rotation of the blower 8. 4 to the air purification chamber 3A, and then the primary and secondary filters,
That is, clean air that is filtered and purified through the bag filter 7 and the high-performance filter 11 and further through the activated carbon filter 12 and sent out to the air ducts 1H is vigorously injected into the shower chamber 2 (circulation). Then, dust adhering to the clothes, body, etc., of the person entering the shower room 2 is cleanly wiped off.

Reference numeral 15X denotes a hand-held air blowing nozzle provided in the shower chamber 2.
X has a structure in which compressed air is supplied from the compressor 14 through the air pipes 14T and 14T '. Further, the compressor 14 is also supplied to the above-described dust removing device 9 and the injection device 10 through the air pipe 14S.
Compressed air can be freely supplied from.

Reference numeral 16 denotes an illuminator provided in the shower room 2, and reference numeral 20 denotes a control unit (control panel) for controlling each unit of the present invention.

When the entry of a person into the shower chamber 2 is detected, the air inlet 4A is opened by the operating part 5T and the air inlet 4C is closed, that is, the inlet switching valve 5 described above is closed. In the illustrated state, the shower chamber 2 is directly communicated with the air purification chamber 3 side. When it is detected that a person has left the inside of the shower chamber 2, the air inlet 4C is opened by the operating part 5T. Thus, the air flow opening 4A is closed, that is, the shooter chamber 2F is switched to the air purification chamber 3 in a connected state.

FIG. 2 is a block diagram illustrating an example of the electrical configuration of the air shower device according to the present invention.
In the figure, reference numerals 21 and 22 denote an entrance sensor and an exit sensor for detecting entry and exit of a person into and out of the shower room 2, respectively.
The motor 8M of the blower 8, the operating part of the compressor 14, the illuminating light 16 and the operating part 5T of the inflow switching valve 5 are connected to these sensors 21 and 22 in addition to the sensors 21 and 22. The mechanism is controlled by the control unit 20.

Further, 14A, 14B and 14C are provided from the compressor 14 to the hand-held air blowing nozzle 15 described above.
In the middle of an air pipe 14T for supplying compressed air to X,
An electromagnetic switching valve provided at each intermediate portion of an air pipe 14S for supplying compressed air to the backwashing injection nozzle 9 'of the dust removal device 9 and the precoating injection nozzle 10' of the injection device 10; Valves 14A, 14B, 14C
Is also connected to the control unit 20 and controlled to open and close as needed.
B and 14C may be manually switched, and the selection is arbitrary.

Next, the operation of the air shower apparatus according to the present invention will be described with reference to the flowchart shown in FIG. The supply of compressed air to the backwashing injection nozzle 9 ′ and the precoating injection nozzle 10 ′ is performed during operation of the air shower device, or at the start of the operation, as necessary. The description is omitted in this flowchart.

When the entrance sensor 21 detects the entry of a person into the shower chamber 2 in the first step S1, the operation proceeds to the next step S2 in which the operating section 5T sets the inflow switching valve 5 to the air circulation port as shown in FIG. 4A is opened and the air inlet 4C is closed, that is, the dust-containing airflow in the shower chamber 2 is set to be sucked into the air purification chamber 3 through the air flow passage 4, and then the process proceeds to step S3. The operation of the blower 8 is started. In a place where the air shower is frequently used, the blower 8 may be operated continuously, and the selection thereof is optional.

When the blower 8 starts operating, air is taken in from the shower chamber 2 into the air purification chamber 3 through the air flow passage 4 and is filtered by the back filter 7.
High-performance filtration and adsorption treatment of various exhaust gases such as high-temperature acid gas are performed through the high-performance filter 11 and the activated carbon filter 12, and then the process proceeds to step S4 where the purified air that has been subjected to the filtration and purification is passed through an air duct. 1
H can be sprayed (circulated) from the air nozzles 15 into the shower chamber 2 through H to remove dust adhering to the clothes, body, etc. of the entrant.

In the next step S5, when the hand-held air blowing nozzle 15X is used in addition to the air injection from each of the air nozzles 15... Proceeding to step S6, the use is enabled, and a more powerful air shower enables local and intensive air cleaning.

The above air nozzles 15... And 15X
Most of the dust blown off by the air shower ejected from the air blower 8 is sucked into the air purification chamber 3 through the air circulation port 4A by the suction action of the blower 8 and rides on the dust-containing airflow. 7 and high-performance filter 1
1 and activated carbon filter 12.

Further, when a neutralizing agent or an adsorbent is pre-coated on the bag filters 7 by air injection by the injection device 10, the harmful gas is neutralized and adsorbed by the pre-coating layer of the neutralizing agent or the adsorbent. be able to.

When the person exits the shower chamber 2 after the cleaning by the air shower, the exit sensor 22 detects the exit in step S7, and proceeds to the next step S8 in which the operating unit 5T operates the inlet switching valve 5. The air flow opening 4A is closed and the air flow inlet 4C is opened, that is, the state where the suction action of the blower 8 is applied to the shooter chamber 2F is switched and set.
The relatively heavy dust falling and accumulating on the floor surface is taken into the shooter chamber 2F through the floor plate 2V made by using a ventilation plate such as a perforated plate or a lattice plate, and the collected dust and the like. Is sucked from the air inlet 4C to the air purification chamber 3 through the air inlet 4B to clean the shooter chamber 2F and the shower chamber 2.

The shooter room 2F in step S9
The cleaning of the shower chamber 2 is performed in the next step S1.
0 until the operation of the blower 8 is stopped,
When the blower 8 is operated continuously as described above, the cleaning operation is continued until the entrance sensor 21 next detects a new occupant.

The heavy dust sucked into the air purification chamber 3 through the shooter chamber 2F is collected by the bag filters 7 in the dust collection chamber 3A, and is collected together with the dust. The exhaust gas sucked into the bag filter 7 is neutralized or adsorbed by the layer of the neutralizing agent or the adsorbent PC pre-coated on the bag filter 7, and the dust is removed from the bag filter 7 to the dust collection box 13 by the dust removing device 9. The dusted-off dust and the neutralizing agent or the adsorbent PC adsorbing the exhaust gas can be suction-collected to the cleaner 30 or the dust collector through the hose connection port 13P without being scattered outside.

Therefore, even if harmful substances such as dioxin are adhered to clothes (work clothes, etc.) as a result of working in an environment such as an incineration facility, these harmful substances are transferred to the shower room 2. After it is blown off using an air shower and collected in the bag filter 7, it can be safely collected in the vacuum cleaner 30 or the dust collector without being blown out to the dust collection box 13 and scattered around. .

[0046]

As described above, according to the air shower device according to the present invention, dust adhered to clothes and the like is heavily stained, and many harmful substances such as dioxin are adhered. Even in such a case, the dust and harmful substances can be reliably removed by air shower, and the clogging of the filter can be reduced to reduce the amount of time spent for replacing the filter and removing dust. In addition to reducing the time required as much as possible and efficiently using a single blower to make the entire device compact and low-cost, especially heavy dust and It is suitable for use in environments where many harmful substances are attached.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating an entire air shower device according to the present invention.

FIG. 2 is a block diagram illustrating an electrical configuration of the present invention.

FIG. 3 is a flowchart illustrating a processing operation of the present invention.

[Explanation of symbols]

Reference Signs List 1 main body of air shower device 1H air duct 2 shower chamber 2V floor plate made of ventilation plate 2F shooter room 3 air purification chamber 4 air flow passage 4A air flow opening 4C air flow inlet 5 flow switching valve 5T operating section 7 bag filter ( Primary filter) 8 Blower 9 Dust remover 10 Injection device for pre-coating 11 High performance filter (Secondary filter) 12 Activated carbon filter 13 Dust collection box 13P Hose connection port PC Neutralizer or adsorbent 14 Compressor 15 Air nozzle 15X Hand-held air blowing Nozzle 30 Vacuum cleaner 34 Suction hose

Claims (7)

[Claims] 1. A shower chamber and an air purification chamber communicating with each other through an air flow passage are formed in a main body, and air sucked from the shower chamber into the air purification chamber through the air flow passage by a blower is filtered by a filter. An air shower device configured to circulate and send out the blown air from the air nozzle into the shower room by an air blowing action of the blower, thereby removing dust adhering to clothes and the like of a room entrant. A primary filter using a bag filter and a secondary filter using a high-performance filter are provided at intervals above and below, and a blower is provided between the primary filter and the secondary filter, and suction of the blower is performed. After the air sucked from the shower chamber into the air purification chamber through the air flow passage by the action is filtered by the primary filter Eashiyawa apparatus characterized by being configured to perform a more advanced filtration by passing the secondary filter by the blowing action of the blower. 2. A bottom plate of the shower chamber is formed of a ventilation plate such as a perforated plate or a lattice, and a shooter chamber is provided below the ventilation plate through an air flow passage to communicate with the air purification chamber. 2. The air shower apparatus according to claim 1, wherein the suction action of the blower extends to the shooter chamber. 3. An air passage opening from the shower chamber to the air passage is an air passage, and an air passage from the shooter chamber to the air passage is an air inlet. 3. The air shower device according to claim 2, wherein the opening and closing are alternately opened and closed by an inflow switching valve so that one is opened and the other is closed. 4. When the entrance to the shower chamber is detected, the air circulation port of the shower chamber opens, the air inlet of the shooter chamber closes, and the air filtered by the filter is injected from the air nozzle by the operation of the blower. While
When the exit from the shower chamber is detected, the air flow opening of the shower chamber is closed, the air inlet of the shooter chamber is opened, and the suction action of the blower is switched to the shooter chamber. Item 3. The air shower device according to item 3. 5. A dust filter is provided on a bag filter constituting a primary filter, a dust collection box is provided below the bag filter, and a suction hose of a vacuum cleaner or a dust collector is connected to the dust collection box. A dust connection box capable of containing a neutralizing agent or an adsorbent for exhaust gas in the dust collection box, and the neutralizing agent or the adsorbent described above is provided in an upper portion of the dust collection box. 2. An air shower device according to claim 1, further comprising a pre-coating compressed air injection device for blowing up the air. 6. A hand-held air nozzle is provided in the interior of the shower chamber, and the air nozzle, the dust removing device for the bag filter, and the injection device for blowing up the neutralizing agent or the adsorbent are supplied from one compressor. 6. The air shower device according to claim 1, wherein the compressed air is selectively switched and supplied. 7. The air shower device according to claim 1, wherein an activated carbon filter is provided at a next stage of a secondary filter using a high-performance filter.