KR100755271B1 - Air purifying system for food processing factory - Google Patents

Abstract

An air purifying system for a food processing factory is provided to effectively remove fine dusts and floating germs inside the factory, and to prevent germ breeding and contamination of foods due to microorganisms by purifying air contaminated with the dusts and the germs generated in a work place. An air purifying system for a food processing factory comprises a bag filter(15), an inflow blow unit(20), a sterilizing room(30), a constant temperature sterilizing room(40), a dehumidification room(60) and a housing(70). The bag filter is connected to a duct(13) extended from contamination generation source(10), and firstly removes dusts and germs in air. The inflow blow unit suctions air through the bag filter. The sterilizing room includes a plurality of UV lamps so as to firstly sterilize the air. The constant temperature sterilizing room includes a plurality of filters for filtering fine dusts and microorganisms in the air, removing odor and providing purified air. The dehumidification room has freezing dehumidification coils for removing moisture in the purified air, and provides air with proper humidity to a work place(90) through a duct(88). The housing includes space for mounting the bag filter, the inflow blow unit, the sterilizing room, the constant temperature sterilizing room and the dehumidification room in the inside.

Description

Air Purifying System For Food Processing Factory

1 is a block diagram showing an air purification system for a food processing plant according to the present invention;

Figure 2 is a block diagram showing an air purification system for a food processing plant according to the present invention,

       a) a plan view, b) a side view;

Figure 3 is an external perspective view showing a housing provided in the air purification system for a food processing plant according to the present invention;

Figure 4 is a side view showing the arrangement of the components provided in the housing of the air purification system for food processing plants according to the present invention;

5 is a side view showing an inlet blowing means provided in the present invention;

6 is a cross-sectional view showing a sterilization chamber provided in the present invention;

7 is a perspective view showing the filters of the constant temperature sterilization chamber provided in the present invention;

8 is a block diagram showing the refrigeration units connected to the dehumidification chamber and the refrigeration dehumidification coil provided in the present invention;

9 is a table showing item-by-item improvement results of the workplace environment obtained by the present invention.

<Explanation of symbols for main parts of the drawings>

1 ..... Air purification system for food processing plant according to the present invention

10 .... Pollutant Source 13,88 .... Duct

15 .... bag filter 20 .... inlet blowing means

30 ... sterilization chamber 32 ... UV lamp

34 .... Air inlet 37 .... Sterilization chamber projection window

39 .... inspection door 40 .... constant temperature sterilization chamber

42 .... pre-filter 44 .... hepa-filter

46 .... carbon-filter 60 .... dehumidification chamber

62 .... refrigeration dehumidification coil 64 .... compressor

66 .... Condenser 68 .... Fan

70 .. Housing 72 .... Bag filter compartment

74 .... Space for inlet ventilation means 76 .... Sterilization chamber space

78 .... Constant temperature sterilization room space 80 .... Dehumidification room space

82 .. Plumbing 84 .... Drip

86 .... Drain 90 .... Workshop

The present invention relates to a system for purifying air in a food processing plant, and more particularly, by purifying and resupplying air contaminated with dust and bacteria generated in a working room to effectively remove microorganisms and floating bacteria inside the plant to remove microorganisms. The present invention relates to an air purifying system for a food processing plant, which is improved to prevent bacterial propagation and contamination by food, and to create a pleasant working environment to improve work productivity.

In general, bacteria, fungi, and various allergens in indoor air may be generated in various living environments, daily necessities, and food and beverages that are useful at home. These contaminants can cause allergic or respiratory diseases and sometimes act as a carrier for infectious diseases such as pulmonary tuberculosis. For example, Legionnaire's disease associated with air conditioning has been found to be caused by bacteria, particularly where airborne infections of bacteria are reported to be 10-20% of the total infection rate, particularly where they are susceptible to contaminants such as bacteria or viruses. I'm shocked.

In particular, most of the raw materials handled in food processing workshops are carbohydrates and proteins, which are essential for the growth of microorganisms. In addition, heat or moisture (humidity) generated during the food processing process creates an optimal environment for microorganisms to grow in the workplace. Microorganisms can grow rapidly on the walls of the workplace or inside the air conditioning facilities under sufficient nutrients and growth conditions, and can enter the workplace again and pose a risk to worker health.

Under strict hygiene regulations, workers should place a large percentage of their time on frequent workplace cleaning and disinfection. These simple labor, unrelated to production, are sufficient to undermine workers' motivation to produce. In addition, the disinfectant used is a kind of organic compound, which is a cause of occupational health disorders due to direct inhalation of harmful substances generated by prolonged exposure.

Most food processing workplaces are equipped with air conditioners, dehumidifiers, UV lamps, etc., to improve the working environment and to suppress the microbial growth conditions mentioned above, but they are locally limited, and most of them are operated separately for efficiency or performance. Esau is in short supply. These local environmental improvement facilities cause the operating cost of the workplace to be increased compared to the effect actually obtained, and the low improvement efficiency causes the reduction of work efficiency, which leads to the decrease of productivity and the turnover rate of existing workers.

Most domestic food processing companies mainly use local exhaust and whole ventilation facilities, but many workplaces have local exhaust facilities, but they do not show satisfactory effects or meet the control speed as much as the investment cost. .

In addition, although the clean room system is installed in semiconductor and pharmaceutical factories, most domestic food processing SMEs lack the technology and the capital to improve the working conditions and working environment. Food processing companies with relatively low added value are required to improve the work environment with low cost and high efficiency in consideration of installation cost and operating cost.

Food raw materials that can be generated during food processing in food factories are natural extracts made of powder, which can be used as a nutrient source for microorganisms when spread inside the workplace. In addition, the food processing industry works in a closed space that is isolated from the outside for hygiene control.

In addition, the moisture generated during food processing (heating, drying) reaches a relative humidity of about 80 to 90%, causing blurred vision and increasing moisture in workers' skin, causing discomfort. In addition, condensate falls to the floor and the workplace floor is always wet, which is a risk factor such as slipping and overlapping. Where the dehumidification system is not properly installed, the civilian simple dehumidifier is used, but the capacity is small and the heat generated by the warm air may cause the worker's discomfort.

Therefore, during the food processing (grinding, mixing), the powder of the raw material comes out in the workplace, and the powder falls to the floor due to the difference in specific gravity, and the fine powder adheres to the wall or ceiling. In addition, it can be adhered to the interior of the air conditioning or ventilation. Most of the fines in these food ingredients are proteins and carbohydrates, and these are good nutrients essential for the growth of microorganisms.

And the above-mentioned moisture or heat serves to provide a good environment for the growth of microorganisms. The microorganisms propagated here can return to the workplace and contaminate the product, or they can be a threat to the health of workers, such as allergic diseases, respiratory diseases, and sometimes pulmonary tuberculosis.

Therefore, the food processor requires strict hygiene, such as cleaning, cleaning, disinfection. Due to the above reasons, a large proportion of the work time should be spent on such an unproductive work, and such simple repetitive labor will greatly reduce worker productivity. In addition, disinfectants used may adversely affect worker's discomfort or health due to odor or absorption of chemicals in the body after prolonged exposure to the worker.

On the other hand, domestic indoor pollution is significantly higher than that of foreign countries. On the other hand, studies on the problems and solutions of indoor pollution are very partial. Recently, due to the development of air conditioning technology, most of these indoor environments have been forced to use forced ventilation. Therefore, there is an urgent need for the development of functional antibacterial filters and sterilization systems that can remove indoor air pollutants.

Conventionally, local ventilation facilities, domestic air conditioners, dehumidifiers, or UV sterilizers are operated locally to solve such problems, but the cost of deteriorating efficiency and the separate operation also take a large part of the overall production cost. There is no proper solution yet.

The present invention is to solve the conventional problems as described above, the purpose is to purify the air contaminated with dust and bacteria generated in the work room to re-supplied to effectively remove the fine dust and floating bacteria inside the factory, Accordingly, to prevent bacterial propagation and contamination of food by microorganisms, to provide a pleasant working environment to provide an improved air purification system for food processing plants to greatly improve the work productivity.

In order to achieve the above object, the present invention is connected to a duct extending from the source of pollution, the bag filter to remove the dust and bacteria in the air first; Inlet blowing means for sucking air through the bag filter on a downstream side of the bag filter; A sterilization chamber positioned on the downstream side of the inflow blowing means and having a space where air temporarily stays, and having a plurality of UV lamps to sterilize the air first; A constant temperature sterilization chamber positioned on the downstream side of the sterilization chamber and having a plurality of filters for filtering fine dust and microorganisms in the air and removing odors to provide clean air; A dehumidification chamber positioned on the downstream side of the constant temperature sterilization chamber, having a refrigeration dehumidification coil for condensing and removing moisture in the clean air, and providing a humidified air to a workplace through a duct; And a housing having a space for mounting the bag filter, an inlet blower, a sterilization chamber, a constant temperature sterilization chamber, and a dehumidification chamber therein, for purifying air generated from a pollution source generating fine dust and floating bacteria. In the air purification system for food processing plant,
The housing has a bag filter mounting space formed at one lower side thereof, an inlet blower mounting space disposed at an upper side thereof, a sterilization chamber space disposed at the right side thereof, and a constant temperature sterilization chamber space and a dehumidification chamber disposed at the lower side thereof. Spaces are arranged in sequence;
The sterilization chamber is equipped with a plurality of UV lamps on the upper side of the inner space, an air inlet is formed on one side thereof, and an air outlet connected to the constant temperature sterilization chamber is formed on the lower side thereof, and is at least 10 seconds in the space. Abnormal air stays and is sterilized;
The constant temperature antimicrobial chamber is a pre-filter for removing the dust of the sterilized air coarse particles, a hepa-filter for filtering out fine dust and microorganisms in the air and a carbon filter for filtering microorganisms and odors in the air. fine dust, microorganisms and odors and bacteria are removed through the carbon-filter, while the HEPA filter is attached with an antibacterial filter to prevent contamination by microorganisms and bacteria that can grow inside the filter;
The dehumidification chamber space is inclined drip tray and drain is formed in the lower side so that the water is formed in the freezing dehumidification coil in the lower side, the duct is located on the side of the dehumidification chamber is connected to the workplace, low temperature dehumidification treatment, It provides an air purification system for a food processing plant, characterized in that it is antibacterial, and configured to provide clean air with a low concentration of fine dust and suspended bacteria to the workplace.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

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The air purification system 1 for a food processing plant according to the present invention purifies the air generated from the pollution source 10 that generates fine dust and floating bacteria in the food factory, as shown in FIGS. 1 and 2 as a whole. It is for.

The air purification system 1 for a food processing plant according to the present invention includes a bag filter 15, an inlet blowing means 20, a sterilization chamber 30, a constant temperature sterilization chamber 40 and a dehumidification chamber 60 which will be described later. It is a structure including a housing 70 having a space for mounting them therein integrally.

The housing 70 is made of a structurally strong stainless steel structure, as shown in Figure 3, the lower side is formed with a bag filter mounting space 72, the upper side of the inlet blowing means mounting space 74 This structure is arranged, the sterilization chamber space 76 is disposed on the right side, and the constant temperature sterilization chamber space 78 and the dehumidification chamber space 80 are arranged one after the other.

The air purification system 1 for a food processing plant according to the present invention includes a bag filter 15 at one lower side of the housing 70, which is connected to a duct 13 extending from the pollution source 10. It is the first removal of dust and bacteria in the air.

As shown in FIG. 4, the bag filter 15 is disposed at a lower side of the housing 70, and an inlet 15a is connected to a duct 13 extending from the pollution source 10. The air passing through the bag filter 15 is disposed to flow to the inflow blower 20 on the upper side thereof.

The bag filter 15 is detachably mounted in the bag filter space 72 of the housing 70. When the foreign matter such as dust accumulates therein for a certain period of time, the bag filter 15 is replaced with a new one. It is configured to do that.

The bag filter 15 is primarily used to filter foreign matters such as dust in the air transferred from the pollution source 10, and mostly removes foreign substances of large size from the polluted air. The bag filter 15 has a form of a long bag, and a semicircular plastic support (not shown) is embedded therein to prevent the bag from shrinking.

In addition, the air purification system 1 for a food processing factory according to the present invention includes an inlet blowing means 20 for sucking air through the bag filter 15 on the downstream side of the bag filter 15. .

4 and 5, the inlet blower (20) is made of an induced blower (Induced Blower), the inlet is arranged in the lower side toward the bag filter space 72, the outlet is a side It is configured to face toward the sterilization chamber space 76.

When the inlet blower means 20 operates, the bag filter 15 sucks air from the pollution source 10 of the workshop 90, for example, a mixer.

Therefore, the polluted air may be introduced into the air purification system 1 for the food processing plant according to the present invention, and may be cleaned.

And the present invention is located on the downstream side of the inlet blowing means 20 has a space where the air temporarily stays, provided with a plurality of UV lamps 32 is provided with a sterilization chamber 30 for the first sterilization treatment of air do.

As shown in FIG. 6, the sterilization chamber 30 is equipped with a plurality of UV lamps 32, for example, eight 20W UV lamps 32 in the present invention, on the upper side of the inner space thereof. An air inlet 34 is formed at one side thereof, and air is introduced from the inlet blowing means 20, and at the lower side thereof, the air inlet 34 is connected to the constant temperature sterilization chamber 40 to allow air to flow.

Such sterilization chamber 30 has a structure in which sterilization treatment is performed while the air stays in the inner space for at least 10 seconds. In this case, when air is introduced into the sterilization chamber 30, the air must pass through the constant temperature sterilization chamber 40, which will be described later, and the air is provided with a plurality of filters provided in the constant temperature sterilization chamber 40. The resistance is caused by the flow, so that the air does not pass directly through the space of the sterilization chamber 30 and is stagnated for a certain time, the retention time is at least 10 seconds.

In addition, the air purification system 1 for a food processing plant according to the present invention is located on the downstream side of the sterilization chamber 30 to filter out fine dust and microorganisms in the air, and remove odors to provide a plurality of filters to provide clean air. And a constant temperature sterilization chamber 40 provided.

The constant temperature sterilization chamber 40 is formed directly under the sterilization chamber 30, and as shown in FIG. 7, the constant temperature sterilization chamber 40 removes dust from coarse particles. (42), on the lower side, a hepa-filter (44) for filtering fine dust and microorganisms in the air, and a carbon-filter (46) for filtering microorganisms and odors in the air, in turn, are laminated. Doing.

The constant temperature sterilization chamber 40 is detachably mounted inside the housing 70 in a drawer type manner, and the prefilter 42 includes foreign substances having a relatively large particle size in the air flowing from the sterilization chamber 30. The inflow to the HEPA filter 44 and the carbon filter 46 side is prevented.

The hepa filter 44 filters fine dust, microorganisms and bacteria in the air, and removes, for example, particles of 0.3 μm or more from the air.

In addition, the carbon filter 46 filters microorganisms and odors, and air is adsorbed while passing through a plurality of fine holes provided in the carbon filter 46 to remove microorganisms and odors.

And a dehumidification chamber 60 is located on the downstream side of the constant temperature sterilization chamber 40, which is provided with a refrigeration dehumidification coil 62 for condensing and removing moisture in the clean air, and supplies air of a suitable humidity to the workplace through the duct 88. It is a structure provided by 90.

The refrigeration dehumidification coil 62 serves as an evaporator, the ambient air of the refrigeration dehumidification coil 62 is lowered in temperature and the relative humidity rises to form moisture. As a result, dehumidification occurs and the incoming air is replaced with cold, dry air.

As shown in FIG. 8, the dehumidification chamber 60 provided with the freeze dehumidification coil 62 includes a compressor 64 connected to the freeze dehumidification coil 62 to condense and remove moisture in clean air. 64 converts the low temperature low pressure gas refrigerant introduced from the refrigeration dehumidification coil 62 into the high temperature high pressure gas refrigerant.

And a condenser 66 connected to the compressor 64 to convert a gas refrigerant having a high temperature and high pressure into a liquid refrigerant having a medium temperature and high pressure. A fan 68 is positioned at the condenser 66, It is to lower the temperature of the gaseous refrigerant into a medium temperature and high pressure liquid refrigerant.

In addition, the condenser 66 is connected to the expansion valve 70 for converting the medium-temperature high-pressure liquid refrigerant introduced therefrom into a low-temperature low-pressure liquid refrigerant, the low-temperature low-pressure liquid refrigerant from the expansion valve 70 And a refrigeration dehumidification coil 62 which is converted into a gas refrigerant having a high temperature and low pressure.

Here, the refrigeration dehumidification coil 62 acts as an evaporator, the refrigeration dehumidification coil 62 is located in the dehumidification chamber 60, the remaining compressor 64, the condenser 66, the fan 68 and the expansion valve ( 70 and the like are located outside the dehumidification chamber 60, respectively, and are connected to each other via a pipe 82.

As described above, the refrigeration unit 200 includes a refrigeration dehumidification coil 62, a compressor 64, a condenser 66, an expansion valve 70, and a fan 68, thereby compressing the compressor 64 and condenser ( A series of refrigeration cycles may be performed through the condensation process of 66, the expansion process of the expansion valve 70, and the evaporation process of the freeze dehumidification coil 62.

Meanwhile, the dehumidification chamber 60 has an inclined drip tray 84 formed at a lower surface thereof to drain water formed in the freeze dehumidifying coil 62, and a drain hole 86 is installed at the drip tray 84.

Reference numeral 37 is a sterilization chamber projection window, and 39 is an inspection door.

Air purification system 1 for a food processing plant according to the present invention configured as described above as shown in Figures 1 and 2 as a whole, air from the pollution source 10 for generating fine dust and floating bacteria in the food factory It is a system that aspirates and cleanses it.

In the air purification system 1 for a food processing plant according to the present invention, when suction power is generated inside the housing 70 by the action of the inflow blowing means 20, the suction force is the duct 13 and the bag filter 15. Air is sucked from the pollution source 10, for example, a mixer, and the bag filter 15 first removes dust and bacteria from the air.

The bag filter 15 filters and removes foreign matter having a large size contained in the air, and passes small dust and microorganisms and bacteria. Such a bag filter 15 has a form of a long bag and can be replaced with a new one when a foreign substance is filled inside.

The air passing through the bag filter 15 and the inlet blowing means 20 flows into the sterilization chamber 30 and is sterilized by receiving ultraviolet (ultra-violet ray) inside the sterilization chamber 30.

The sterilization chamber 30 is equipped with a plurality of UV lamps 32 having a capacity of 20W to sterilize the air flowing from the inlet blowing means 20 and staying in the sterilization chamber 30 by irradiating ultraviolet rays.

Air sterilized through the sterilization chamber 30 as described above flows into the constant temperature sterilization chamber 40 on the lower side thereof. While passing through the constant temperature sterilization chamber 40, foreign particles having a relatively large particle size in the air are first removed through the pre-filter 42, and then fine dust, microorganisms, and bacteria in air of 0.3 μm or more while passing through the HEPA filter 44. To remove it. In addition, the carbon filter 46 is adsorbed and removed microorganisms and odors.

And the air that has passed through the constant temperature sterilization chamber 40 passes through the dehumidification chamber 60 of the lower side, and is cooled while passing through the freeze dehumidification coil 62 provided in the dehumidification chamber 60, the temperature is lowered, Relative humidity rises to form moisture in the freezing dehumidification coil 62. As a result, dehumidification occurs and the introduced air is replaced with low temperature dry air.

As such, the air passing through the dehumidification chamber 60 passes through the duct 88 and is resupplied to the workplace 90 such as the mixing chamber, and thus, the cold dry air supplied to the workshop 90 naturally flows into the interior of the factory. It spreads and flows. Thus, according to the present invention, contaminated air can be purified by clean air of low temperature drying.

In particular, when the antimicrobial filter (not shown) is attached to the HEPA filter 44, the probability of contamination by microorganisms that can grow inside the filter can be further reduced.

In addition, by using the UV sterilization lamp 32 to first sterilize the microorganisms suspended in the air that can be sucked into the filter can be removed in advance to the microorganisms that can enter the interior of the workplace (90). In addition, in the case of the filters 42, 44 and 46 included in the constant temperature sterilization chamber 40 or the UV sterilization lamps 32 provided in the sterilization chamber 30, the saturation phenomenon by fine dust or harmful gas is further increased. It is installed in a removable structure for easy replacement, in case it cannot be used or when the lamp 32 needs to be replaced due to the end of life of the lamp.

The result of purifying the air in the workplace 90 through the air purification system 1 for the food processing plant according to the present invention is shown in FIG.

As a result of applying the air purification system (1) for a food processing plant of the present invention, the fine dust, which was conventionally 4,500 µg / m 3 (laboratory) and 267 µg / m 3, was 110 µg / m 3 and 97.3 µg / m, respectively in a mixed packaging chamber and a grinding chamber, respectively. Could be maintained at m 3.

 And the temperature and humidity in the workplace 90, the field analysis results, the measurement results of the temperature of 23.3 ℃ and 57.4% of the humidity was obtained, they were able to maintain below the acceptance criteria.

In addition, the floating bacteria in the workplace 90 significantly affect the productivity of workers due to worker's health and contamination of the product, and the concentration of the floating bacteria in the workplace 90 is 283 CFU / m 3, which is about one third of the acceptance criteria. Was as low as.

As described above, according to the present invention, improved measurement results were obtained in all items of temperature, humidity, fine dust, and suspended bacteria in the workplace 90.

Although the present invention has been described in detail with reference to the accompanying drawings, the present invention is not limited to such a specific structure. Those skilled in the art may variously modify or change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. For example, depending on the size of the workplace, the capacity of the various components may be applied differently, and may be replaced with other components having the same function. Nevertheless, it is intended that it be clear in advance that modifications such as modifications of simple structure or specification changes of parts are all clearly within the scope of the present invention.

According to the present invention as described above it is possible to effectively remove the fine dust and floating bacteria inside the factory by purifying and re-supplied air contaminated with dust and bacteria generated in the working room, according to the bacteria propagation and contamination of food by microorganisms Can be prevented.

In addition, by creating a pleasant working environment according to the appropriate temperature and humidity control, an improved effect can be obtained to greatly improve the work productivity of the food processing plant.

Claims (4)

A bag filter connected to a duct extending from a source of pollution to first remove dust and bacteria in the air; Inlet blowing means for sucking air through the bag filter on a downstream side of the bag filter; A sterilization chamber positioned on the downstream side of the inflow blowing means and having a space where air temporarily stays, and having a plurality of UV lamps to sterilize the air first; A constant temperature sterilization chamber positioned on the downstream side of the sterilization chamber and having a plurality of filters for filtering fine dust and microorganisms in the air and removing odors to provide clean air; A dehumidification chamber positioned on the downstream side of the constant temperature sterilization chamber, having a refrigeration dehumidification coil for condensing and removing moisture in the clean air, and providing a humidified air to a workplace through a duct; And Food for purifying the air generated from the pollution source that generates fine dust and suspended bacteria, including a housing having a space for mounting the bag filter, the inlet blowing means, sterilization chamber, constant temperature sterilization chamber and dehumidification chamber therein In the air purification system for processing plants, The housing has a bag filter mounting space formed at one lower side thereof, an inlet blower mounting space disposed at an upper side thereof, a sterilization chamber space disposed at the right side thereof, and a constant temperature sterilization chamber space and a dehumidification chamber disposed at the lower side thereof. Spaces are arranged in sequence; The sterilization chamber is equipped with a plurality of UV lamps on the upper side of the inner space, an air inlet is formed on one side thereof, and an air outlet connected to the constant temperature sterilization chamber is formed on the lower side thereof, and is at least 10 seconds in the space. Abnormal air stays and is sterilized; The constant temperature antimicrobial chamber is a pre-filter for removing the dust of the sterilized air coarse particles, a hepa-filter for filtering out fine dust and microorganisms in the air and a carbon filter for filtering microorganisms and odors in the air. fine dust, microorganisms and odors and bacteria are removed through the carbon-filter, while the HEPA filter is attached with an antibacterial filter to prevent contamination by microorganisms and bacteria that can grow inside the filter; The dehumidification chamber space is inclined drip tray and drain is formed in the lower side so that the water is formed in the freezing dehumidification coil in the lower side, the duct is located on the side of the dehumidification chamber is connected to the workplace, low temperature dehumidification treatment, An air purification system for a food processing plant, characterized in that it is antibacterial and configured to provide clean air with low concentrations of fine dust and suspended bacteria to the workplace. delete delete delete

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