JP4479000B2 - Clean air supply device - Google Patents

Description

  The present invention relates to a clean air supply device that supplies clean air to an environment covering work equipment.

  In food filling factories, semiconductor factories, pharmaceutical factories, etc., in order to eliminate the adverse effects of dust and microorganisms on products in the work environment, a machine cover is placed in a clean room or general room, and work equipment is placed in the machine cover. Then work is done.

  In order to maintain the inside of the machine cover in a clean environment, air is taken into the duct from a clean room or a general room, the air is cleaned by a filter, and clean air is supplied into the machine cover.

JP 2003-126638 A JP 54-162841 JP 51-109143 A

  However, in food filling factories, the cleaning technology employed in semiconductor factories and the like is used as it is, but this is insufficient. That is, in a food filling factory, the food itself to be handled is always a source of contamination that releases fine particles and microorganisms, so it is necessary to always blow clean air into the machine cover. Moreover, it is necessary to clean the inside of the machine cover with chemicals or water periodically or as needed. In order to make full use of the performance of the filter to clean the air, especially high-performance filters are provided in the immediate vicinity of the machine cover. May deteriorate.

  The present invention has been made in view of the above circumstances, and can supply high-purity clean air to the machine cover, eliminate the influence of cleaning chemicals and water, and maintain the performance of the filter. An object of the present invention is to provide a clean air supply device capable of performing

  Corresponding to this object, the clean air supply device of the present invention is a clean air supply device for supplying clean air to an environment covering work equipment, and has an air inlet and an air outlet, and the air supply device. An air duct having an outlet connected to the clean air inlet of the environment, and having high prefilter, blower, antibacterial and / or bactericidal properties in order from the air inlet to the air outlet of the air duct A performance filter, a heater that controls the temperature of the air flow, and an ultra-high performance filter are provided, the surface of the ultra-high performance filter that faces the environment is covered with a ventilation member, and the air that has passed through the ultra-high performance filter passes through the ventilation member and the environment. And the ventilation member has an inner part and a peripheral part rising obliquely from the peripheral part of the inner part, and the inner part is A plurality of perforated plates having a number of ventilation slits are arranged in layers at intervals, and the peripheral portion is one of the perforated plates having a large number of ventilation slits or intervals. It is composed of a plurality of layers arranged in layers, and the inner portion is configured such that ventilation slits do not overlap in the direction of the center line of the ventilation slit between adjacent perforated plates, and the extension of the center line of the ventilation slit is super The high-performance filter is configured not to cross the surface.

  Since the clean air supply apparatus of the present invention uses an ultra-high performance filter, for example, 99.99999% or more of fine particles having a particle diameter of 0.3 μm or more can be captured, and clean air equivalent to class 100 or more is used as a machine cover. It can be supplied to keep the inside of the machine cover clean and sterile. By providing a high-performance filter with antibacterial and / or bactericidal properties upstream of the heater in the air duct, it is possible to suppress the growth or bactericidal effect of the collected bacteria and prevent secondary contamination after the high-performance filter. It becomes possible. Further, by disposing a pre-filter at the inlet of the air duct, dust having a large particle size is removed from the air entering the duct, so that clogging of the ultra-high performance filter can be avoided and the performance of the filter can be maintained.

  Also, by installing a heater upstream of the ultra-high performance filter in the ventilation duct, the temperature and humidity of the air reaching the ultra-high performance filter can be matched to the characteristics of the ultra-high performance filter. The performance can be maintained.

  The ultra-high performance filter as viewed from the machine cover is covered with a ventilation member in which a large number of ventilation slits are formed, and the inner part of the ventilation member has a multilayer structure, and the positions of the ventilation slits are staggered and formed. In addition, ventilation slits are formed upward in the surrounding area, and since the spray of chemicals and water when the inside of the machine cover is cleaned is blocked by the ventilation member, the ultra-high performance filter may get wet by those splashes. In addition, the performance of the ultra-high performance filter can be maintained.

  Furthermore, by configuring the air duct and the ventilation member with an antibacterial stainless material, it is possible to obtain bacterial growth suppression or bactericidal effects in the apparatus.

  Hereinafter, details of the present invention will be described with reference to the drawings showing an embodiment.

  FIG. 1 shows a beverage filling device. The filling device 1 includes a bottle supply device 2, a sterilizer 3, a rinser 4, a filler 5, a capper 6, and a bottle discharge device 7.

  A bottle containing a beverage enters a filling device 1 from a bottle supply device 2, is sterilized by a sterilizer 3, is rinsed by a rinser 4, is filled with a beverage by a filler 5, and is capped by a capper 6. Then, the filling process is finished, and the bottle is discharged from the bottle discharging device 7.

  The work equipment of the rinser 4, the filler 5 and the capper 6 is installed in the machine covers 8, 11 and 12, and the machine covers 8, 11 and 12 are installed in the clean room or the general room 13. The atmospheric pressure of each of the machine covers 8, 11, 12 is maintained at a positive pressure, of which the machine cover 11 provided with the filler 5 is the highest, and becomes lower as it goes to the machine covers 8, 12 of the terminal, and the exhaust is indicated by an arrow 14. The positive pressure is maintained so that the machine cover 11 is upstream as shown in FIG.

  Of the machine covers 8, 11 and 12, the machine cover 11 of the filler 5 will be described as a representative example. In the machine cover 11, as shown in FIG. 2, work equipment (in this embodiment, a filler 5) and cleaning and sterilizing devices 15a and 15b are installed, and a clean air supply device 16 is attached.

  The filler 5 is a device that fills a bottle with a beverage, and the cleaning and sterilizing devices 15a and 15b are devices that clean and sterilize the inside of the machine cover 11 with a drug and heated or room temperature sterile water.

  The clean air supply device 16 is a device that supplies clean air to the machine cover 11, and has an air duct 17 as shown in FIG. 3, and the air outlet 21 of the air duct 17 is connected to the clean air inlet 22 of the machine cover 11. Connected. A pre-filter 23 is disposed at the air inlet 18 of the air duct 17, a blower 24 is disposed downstream thereof, and a high-performance filter 25 having antibacterial and / or bactericidal properties is disposed downstream thereof. A heater 26 is disposed on the downstream side.

  The prefilter 23 removes dust having a large particle diameter from the air entering the air duct 17. The blower 24 feeds air. The high-performance filter 25 having antibacterial and / or bactericidal properties can capture, for example, 99.97% or more of fine particles having a particle size of 0.3 μm or more, and can suppress the growth of the captured bacteria or provide a bactericidal effect. It prevents secondary contamination after the performance filter. The heater 26 adjusts the temperature or humidity of the air toward the ultra-high performance filter 27.

  An ultra-high performance filter 27 is disposed at the air outlet 21 of the air duct 17. The ultra-high performance filter 27 is, for example, a filter that captures fine particles having a small particle diameter that can capture 99.9999% or more of fine particles having a particle diameter of 0.3 μm or more. The ultra-high performance filter 27 is preferably composed of a water repellent filter imparted with chemical resistance. A ventilation member 28 is disposed downstream of the ultra-high performance filter 27, and the clean air from the ultra-high performance filter 27 is configured to enter the machine cover 11 through the ventilation slit of the ventilation member 28.

  As shown in FIG. 4, the ventilation member 28 has a cross-sectional shape in which the trapezoidal shape is reversed upside down and the upper side is removed. That is, the ventilation member 28 has a central portion 31 and a peripheral portion 32. Stands diagonally from the periphery. Both the central portion 31 and the peripheral portion 32 are constituted by punching metals 37 and 38 having a large number of slits 33 and 34 opened. The slits 33 and 34 function as ventilation slits 35 and 36 through which air passes.

  In the central portion 31, a plurality of (in this embodiment, two) punching metals 37a and 37b are layered at intervals, but the ventilation slit 35 of the punching metal 37a and the ventilation slit 35 of the punching metal 37b are open. , That is, the direction of the center line 41 is directed to the ultra-high performance filter 27, but the ventilation slits 35 are not concentric in the two punching metals 37 a and 37 b, and are shifted alternately from the machine cover 11. The super-high performance filter 27 is arranged so that it cannot be seen, and the size and pitch of the ventilation slit 35 are selected so that the ventilation slit 35 does not overlap in the direction of the center line 41 in the two punching metals 37a and 37b. Has been. On the other hand, the punching metal 38 in the peripheral portion 32 is formed so that the ventilation slit 36 is formed upward, and the extension of the center line 42 of the ventilation slit 36 does not intersect with the ultra-high performance filter 27.

  The clean air supply device 16 configured as described above takes air from the clean room or the general room 13 and supplies it into the machine cover 11. Air taken from the clean room or general room 13 by the operation of the blower 24 is used to remove dust having a large particle size by the pre-filter 23, sterilize the bacteria collected by the high-performance filter 25, and fine by the ultra-high performance filter 27. Particle removal is performed. In addition, the performance of the ultra-high performance filter can be maintained by adjusting the temperature with the heater 26 and drying the ultra-high performance filter 27, and very clean air can be supplied into the machine cover 11. In addition, you may make it arrange | position the medium performance filter which can capture | acquire the microparticles | fine-particles with a particle size of 1-2 micrometers or more after a pre filter as needed, for example.

  On the other hand, the inside of the machine cover 11 is cleaned by spraying chemicals or water regularly or at any time by the cleaning sterilizers 15 a and 15 b installed in the machine cover 11. Of the spray of the medicine or water at this time, the portion toward the ultra-high performance filter 27 is blocked by the ventilation member 28. The ventilation slits 35 in the punching metal 37 of the ventilation member 28 are formed by alternately shifting the positions of the two punching metals 37a and 37b, and the ventilation slit 36 in the punching metal 38 of the peripheral portion 32 is formed with the blowing port facing upward. , Each of the splashes are blocked and the ultra-high performance filter 27 is not directly applied.

  Install a machine cover in the clean room and supply clean air from the clean room into the machine cover using the clean air supply device.

The clean air supply device has a pre-filter, blower, antibacterial high-performance filter, heater, and water-repellent ultra-high performance filter in order from the inlet side of the air duct to the blow-out part. It supplied in the machine cover through the ventilation member. The air duct and the ventilation member were made of antibacterial stainless material.
High-performance filter Super-high-performance filter manufactured by Japan Cambridge Co., Ltd.

Air duct and ventilation member Material Made by Kawasaki Steel Co., Ltd. Silver-added antibacterial stainless steel In the inner part, the slits of two layers of punching metal were shifted sideways, and in the peripheral part, the slits were formed upward.

  With the above configuration, the cleanliness in the machine cover can be kept at class 100 or higher. Also, the water that was washed inside the machine cover and the splash of the plug did not reach the ultra-high performance filter, and the performance was not deteriorated.

  As described above, since the ultra-high performance filter is used in the present invention, for example, 99.99999% or more of fine particles having a particle diameter of 0.3 μm or more can be captured, and clean air is supplied into the machine cover. The inside can be kept clean and sterile. The performance of an ultra-high performance filter usually decreases when wet. In this invention, the ultra-high performance filter is configured as a water-repellent filter to increase water resistance, and a heater is provided to dry the ultra-high performance filter. This makes it possible to prevent the deterioration of the performance due to the wetting of the ultra-high performance filter, and, more particularly, prevents the adhesion of water and chemical droplets. In other words, the ultra-high performance filter as viewed from the machine cover is covered with a ventilation member in which a large number of ventilation slits are formed, and the inner part of the ventilation member has a multilayer structure, and the positions of the ventilation slits are staggered and formed. In addition, clean air blowing slits are formed upward in the surrounding area, and the spray of chemicals and water when the inside of the machine cover is cleaned is blocked by the ventilation member. The filter does not get wet and the performance of the ultra-high performance filter can be maintained.

  As is apparent from the above description, according to the present invention, high-purity clean air can be supplied to the machine cover, and the filter performance can be maintained without the influence of cleaning chemicals and water. An air supply device can be obtained.

Explanatory drawing which shows the structure of a filling apparatus. Explanatory drawing which shows the structure of a machine cover. Explanatory drawing which shows the structure of a clean air supply apparatus. Explanatory drawing which shows the structure of a ventilation member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Filling apparatus 2 Bottle supply apparatus 3 Sterilizer 4 Rincer 5 Filler 6 Capper 7 Bottle discharge apparatus 8 Machine cover 11 Machine cover 12 Machine cover 13 Clean room or general room 14 Arrow 15 Cleaning sterilization apparatus 16 Clean air supply apparatus 17 Air duct 21 Air Outlet 22 Clean air inlet 23 Prefilter 24 Blower 25 High performance filter 26 Heater 27 Super high performance filter 28 Ventilation member 31 Center portion 32 Peripheral portion 33 Slit 34 Slit 35 Ventilation slit 36 Ventilation slit 37 Punching metal 38 Punching metal 41 Center line 42 Centerline

Claims (4)

A clean air supply device that supplies clean air to an environment that covers work equipment, the air duct having an air inlet and an air outlet, the air outlet being connected to the clean air inlet of the environment A pre-filter, a blower, an antibacterial and / or sterilizing high-performance filter, a heater that controls the temperature of the air flow, and an ultra-high-performance filter in order from the air inlet to the air outlet of the air duct. A surface of the ultra-high performance filter that faces the environment is covered with a ventilation member, and air that has passed through the ultra-high performance filter is sent to the environment through the ventilation member , and the ventilation member has an inner portion and the A peripheral portion rising obliquely from the peripheral portion of the inner portion, and the inner portion includes a plurality of perforated plates having a large number of ventilation slits open. The peripheral portion is composed of one perforated plate having a large number of ventilation slits or a plurality of layers disposed at intervals, and the inner portions are adjacent to each other. The ventilation slit is configured not to overlap the center line direction of the ventilation slit between the perforated plates, and the extension of the center line of the ventilation slit is configured not to intersect the surface of the ultra-high performance filter in the peripheral portion. A clean air supply device.   The clean air supply device according to claim 1, wherein a medium performance filter is provided between the pre-filter and the blower.   The clean air supply device according to any one of claims 1 to 2, wherein the ultra-high performance filter is constituted by a water repellent filter.   The clean air supply device according to any one of claims 1 to 3, wherein one or both of the air duct and the ventilation member are made of an antibacterial stainless material.

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