KR102511357B1 - Showcase for sterilization and air cleaning - Google Patents

Abstract

The present invention relates to a clean showcase having an air sterilization and purification function, which repeatedly sterilizes and disinfects disease germs contained in the air circulating inside a product display room 112 by a UPI filter 150 of the showcase, and has a strong It relates to a technology that sterilizes putrefying bacteria with oxidative power to purify the air by deodorizing and at the same time maintains an appropriate water activity to prevent the preservation period and deterioration of flavor and texture of food.

Description

Clean showcase with air sterilization and cleaning function {Showcase for sterilization and air cleaning}

The present invention relates to a clean showcase having air sterilization and purification functions, and more particularly, to a clean showcase having air sterilization and purification functions as well as sterilization and disinfection of disease germs and deodorization by sterilizing putrefactive bacteria with strong oxidizing power. .

As is well known, the showcase is mainly used to display and store various food materials or beverages in a branch, and its configuration, as shown in FIG. It is formed of a case body 1, and the product display room 2 has a plurality of shelves 3 installed therein, and the front side opening can be opened and closed by a transparent door 4 having a handle 5. .

Such a showcase is to make the inside of the product display room (2) in a low temperature state by a refrigerant circulation structure by a refrigerating cycle, such as a refrigerator, and among the devices constituting the refrigerating cycle, the evaporator (12) is located at the top of the product display room (2). The rest of the compressor 7, condenser 8, and expansion valve (not shown) are installed inside the machine room 6, and the evaporator 12 and condenser 8 have a circulation fan 10 and heat radiation, respectively. Installed with fan (9).

In the showcase configured as described above, the air inside the product display room 2 passes through the evaporator 12 by the operation of the circulation fan 10 and is changed to cold air through heat exchange, and the cold air moves through the product display room 2 in a convection manner. By circulating, the inside of the product display room 2 is brought to a low-temperature state.

Meanwhile, Coronavirus Infectious Disease-19 (COVID-19) is a respiratory infectious disease caused by SARS-CoV-2, a novel coronavirus that has not been discovered in the past. symptoms may appear. This new virus and disease was first reported in Wuhan, China in December 2019 and is now spreading around the world.

The risk of food caused by viruses, various germs, disease germs, etc. is no exception even in the showcase, so special attention is required for hygiene and cleanliness of the food inside the showcase. However, currently available showcases include viruses such as COVID-19, various spoilage bacteria, food poisoning bacteria, pathogenic Escherichia coli, fungi (fungi), bacteria, salmonella, equipment brio, legionella, SARS, avian flu, and disease bacteria such as 0157. There is a serious problem in hygiene and cleanliness of food because it does not have sterilization, disinfection, deodorization, and air purification functions for food.

Along with this, the food inside the showcase, especially macarons and other baked goods, has excellent texture and extended shelf life when proper water activity (aw) is maintained. Water activity is a term that indicates the solubility of water or moisture. , expressed as the ratio of the water vapor pressure of a solution to that of pure water. Water activity in food is an indicator of the free water available to microorganisms, and most bacteria can reproduce at aw of 0.9 or higher, and fungi can grow at about 0.6.

Therefore, it has been required to develop a technology that prevents deterioration of shelf life and flavor and texture of food by maintaining an appropriate water activity with an air sterilization function and a repeated convection circulation structure inside the product display room of the showcase.

1. Republic of Korea Patent Publication No. 10-2020-0073778 (2020.06.24. Publication.)

Therefore, the present invention was invented to solve the above-mentioned problems of the prior art, and its purpose is to sterilize and disinfect disease germs, completely sterilize putrefactive germs with strong oxidizing power, and deodorize as well as clean the air with sterilization and purification functions. It is to provide a showcase.

In addition, another object of the present invention is to allow cold air containing moisture to be discharged to the central portion of the product display room through the cold air outlet, but to have a gap between the front and left and right glass walls of the product display room and the cold air outlet, so that the product display room It is possible to minimize the dew formation on the glass wall caused by the temperature difference between the inside and outside of the food, and it is located lower than the cold air outlet and allows the cold air containing moisture to stay on the bottom of the floor of the product display room where the front and left and right sides are blocked. It is to provide a clean showcase with air sterilization and purification functions that can optimally maintain water activity.

In one form of a clean showcase having an air cleaning function according to the present invention for achieving the object of the present invention, a product display room and a machine room are divided up and down by partition walls, and the product display room has a plurality of shelves inside. , a case body in which the product display room is blocked from the outside by transparent glass; circulating air inlets and cool air outlets that pass through the front and rear sides of the bulkhead vertically and downward; An intake circulation fan installed inside the machine room to forcibly suck in and circulate air inside the product display room through the circulating air inlet, and change the air sucked through the intake circulation fan into cold air through heat exchange. In the configuration of the evaporator, a UPI filter is attached to the intake circulation fan to sterilize and disinfect disease bacteria contained in the air circulating inside the product display room by the UPI filter, and sterilize spoilage bacteria with strong oxidizing power to deodorize and It is characterized by purifying the air.

As described above, the present invention attaches a UPI filter to an intake circulation fan that forcibly sucks and circulates air inside a product display room, thereby removing viruses such as coronavirus infection-19 contained in the air, various spoilage bacteria, food poisoning bacteria, pathogenic E. coli, It sterilizes and disinfects disease germs such as mold (fungus), bacteria, salmonella, equipmentbrio, legionella, SARS, bird flu, and 0157, and sterilizes putrefactive bacteria with strong oxidizing power to deodorize and purify the air. As a result, the food inside the product display room can be displayed and stored more hygienically and cleanly.

In addition, the present invention allows cold air containing moisture to be discharged to the central portion of the product display room through the cold air discharge port, but to have a gap between the front and left and right glass walls of the product display room and the cold air outlet so that the inside of the product display room. It minimizes the dew formation on the glass wall caused by the temperature difference between the outside and reduces the activity of moisture in the food by allowing the cold air containing moisture to stay on the lower part of the floor of the product display room, which is located lower than the cold air outlet and is blocked on the front, left and right sides. By maintaining it optimally, it also has the effect of extending the shelf life of food and preserving and displaying the flavor and texture as it is.

1 is a perspective view showing a clean showcase having an air cleaning function according to the present invention.
Figure 2 is a longitudinal sectional view of Figure 1;
Figure 3 is a perspective view showing the intake circulation fan and the evaporator of Figure 2;
Figure 4 is a cross-sectional view showing the internal structure of the UPI filter of Figure 2;
Figure 5 is a longitudinal sectional view showing the overall configuration of a general showcase.

Advantages and characteristics of the embodiments of the present invention, and methods for achieving them will become clear with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms, only the present embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to completely inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Throughout the specification, like reference numerals refer to like elements.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In addition, the terms to be described below are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to the intention or custom of a user or operator, and therefore, the definitions should be made based on the contents throughout this specification.

Hereinafter, the configuration of a clean showcase having air sterilization and cleaning functions according to the present invention will be described in detail according to embodiments with reference to the accompanying drawings.

1 is a perspective view showing a clean showcase having an air cleaning function according to the present invention, and FIG. 2 is a longitudinal sectional view of FIG. It is divided into a product display room 112 and a machine room 113, and a plurality of shelves 114 are installed inside the product display room 112, and the product display room 112 is separated from the outside by a transparent glass 112a. Blocked.

The partition wall 111 has a plurality of circulation air inlets 115 and cool air outlets 116, and the circulation air intakes 115 are elongated holes that penetrate vertically and upward along the longitudinal direction of the front side of the partition wall 111. , and the cool air outlet 116 is formed in the form of a long hole penetrating vertically and downward along the longitudinal direction of the rear side of the partition wall 111 .

And, inside the machine room 113, devices necessary for the refrigeration cycle, such as a compressor (not shown), a condenser (not shown), an expansion valve (not shown), and an evaporator 140 are installed, the evaporator 140 An intake circulation fan 117 is installed on the front side of the. At this time, the air intake circulation fan 117 is supported by a duct 150 as shown in FIG. 3, and the front portion of the duct 150 is formed as an inclined surface 150a, and air intake circulation is formed on the inclined surface 150a. The fan 117 is installed to pass through the inside and outside of the duct 150.

Therefore, when the intake circulation fan 117 operates, the air inside the product display room 112 is forcibly sucked into the evaporator 140 inside the machine room 113 through the circulation air intake 115 of the partition wall 111, and the duct ( The air sucked into the evaporator 140 by the guidance of 150) is changed into cold air through heat exchange with the evaporator 140, and then discharged into the product display room 112 through the cold air outlet 116 of the partition wall 111. By forming a repeated convection circulation structure, the inside of the product display room 112 is made in a low-temperature state. Since it is directed toward (115), it has the advantage of further increasing the cooling air circulation efficiency.

On the other hand, the characteristics here are viruses such as coronavirus infection-19, various spoilage bacteria, food poisoning bacteria, pathogenic Escherichia coli, fungi (fungi), bacteria, salmonella, equipment brio, legionella, SARS, avian flu, disease bacteria such as 0157 It sterilizes and disinfects, and sterilizes putrefactive bacteria with strong oxidizing power to have deodorization as well as air cleaning functions. To this end, in the present invention, an Ultra Plasma Ion (UPI) filter 150 is installed on the rear surface of the intake circulation fan 117.

The UPI filter 150 uses plasma generated and discharged by continuously introducing a high-voltage current into the (+) pole and (-) of the filter. The plasma decomposes water molecules in the air into hydrogen ions and oxygen ions, , Hydrogen ions and oxygen ions are formed as cluster ions of water molecule aggregates, and cluster ions are quickly attached to the surface of harmful substances (viruses, bacteria, allergies, and various germs) and are changed into OH radicals, and OH radicals are harmful substances It has functions and effects by instantly taking out hydrogen from surface proteins to decompose and remove proteins of harmful substances, and OH radicals are combined with the hydrogen ions taken back to become moisture and return to the air, so they are non-toxic and human body. completely harmless to

As such, the UPI filter creates OH radicals (Hydroxyl Radical) by electrical action, and OH radicals are non-toxic and harmless to the human body. And by removing it, it has a strong sterilization and disinfection, deodorizing function and purification effect on viruses and various bacteria in the air.

4 is a cross-sectional view showing the internal structure of the UPI filter of the present invention. As shown therein, the UPI filter 150 is formed of a filter case 151 having a suction port 151a and a discharge port 151b on one side and the other side, respectively. And, on the substrate 152 inside the filter case 151, an ionizer 153 for generating cluster ions by electrical action is installed.

The cluster ions generated by the ionizer 153 are quickly attached to the air inside the product display room 112 introduced through the suction port 151a by the intake circulation fan 117 and then changed to OH radicals, OH Radicals are involved in germination and disinfection of contaminants contained in the air to chemically decompose and remove them. The air sterilized, disinfected, deodorized, and purified by OH radicals exchanges heat with the evaporator 140 and is discharged back to the inside of the product display room 112 in a low temperature state and circulated in a certain direction, and is repeatedly sterilized so that the food inside the product display room It has the advantage of being able to store and display it more hygienically and cleanly.

On the other hand, the present invention allows cold air containing moisture to be discharged to the center of the product display room through the cold air outlet, but has a gap between the front, left and right glass walls and the cold air outlet, so that the temperature difference between the inside and outside of the product display room is reduced. This is to minimize the dew formation on the glass wall caused by this, and to keep the moisture activity in the food optimally by allowing the cold air containing moisture to stay in the lower upper part where the front and left and right sides are blocked and located lower than the cold air outlet. There is another characteristic.

More specifically, the partition wall 111 has a gap 111a at the front side and left and right sides of the product display room 112 at a distance from each wall and having a height from the bottom of the partition wall 111. An inclined surface 111b toward the center of the product display room 112 is formed between the spacer jaw 111a on the front side and the bottom of the partition wall 111, and a plurality of cold air outlets 116 are formed on the inclined surface 111b. will be.

Therefore, the cold air discharged into the product display room 112 is discharged to the center of the product display room 112 by the inclined cold air outlet 116, and the cold air outlet 116 is discharged to each glass wall surface by the spacer jaw 111a. By keeping the distance from the product display room 112, it is possible to minimize contact of the cold air inside the product display room 112 with the glass wall surface, which can significantly reduce the dew formation on the glass wall surface due to the temperature difference between the inside and outside of the glass wall surface. have an advantage

In addition, the present invention is located in the front, left and right sides of the product display room 112, is surrounded by a clearance jaw 111a having a height from the bottom of the partition wall 111, and is located lower than the inclined cold air outlet 116. By constructing the lower part 111c with the upper part of the bottom of 111, after being discharged through the cold air discharge port 116, heat exchange with the air inside the product display room 112 is carried out, and the cold air containing moisture settles down to the lower upper part 111c. It stays, and the cold air containing moisture in the lower upper part 111c affects the water activity in the food, so that the food inside the product display room 112 can be maintained at the optimum water activity.

Water activity (AW) is expressed as the ratio of the water vapor pressure (Po) of water at that temperature to the water vapor pressure (Ps) of food at a certain temperature (AW = Ps/Po). In storage, the water activity has a more important meaning than the water content in determining whether microorganisms are contaminated. In general, when the water activity is lowered, the preservability is excellent, which is advantageous, but when the water activity is too low, the texture and flavor of the product are adversely affected. Therefore, in the present invention, it has a water activity to secure excellent preservation without adversely affecting the texture or flavor of the product.

As described above, the present invention attaches a UPI filter to an air intake circulation fan that forcibly sucks and circulates the air inside the product display room, thereby reducing viruses such as coronavirus infection-19 contained in the air, various spoilage bacteria, food poisoning bacteria, pathogenic Escherichia coli, and fungi (fungi). ), bacteria, salmonella, equipment brio, legionella, SARS, bird flu, 0157, etc., sterilize and disinfect, and sterilize putrefactive bacteria with strong oxidizing power to deodorize and purify the air. As a result, the food inside the product display room can be displayed and stored more hygienically and cleanly.

In addition, the present invention allows cold air containing moisture to be discharged to the central portion of the product display room through the cold air discharge port, but to have a gap between the front and left and right glass walls of the product display room and the cold air outlet so that the inside of the product display room. It minimizes the dew formation on the glass wall caused by the temperature difference between the outside and reduces the activity of moisture in the food by allowing the cold air containing moisture to stay on the lower part of the floor of the product display room, which is located lower than the cold air outlet and is blocked on the front, left and right sides. By maintaining it optimally, it is possible to extend the shelf life of food and to preserve and display the flavor and texture as it is.

In the above, the clean showcase having an air cleaning function according to the present invention has been specifically described, but this is only a description of the most preferred embodiment of the present invention, and the present invention is not limited thereto, and the scope is provided by the appended claims. is determined and limited. In addition, anyone skilled in the art will be able to make various modifications and imitations according to the description of the present invention, but it will be clear that this also does not deviate from the scope of the present invention.

110: case body
111: bulkhead 111a: gap jaw
111b: inclined surface 111c: low top
112: product display room 112a: transparent glass
113: machine room 114: lathe
115: circulation air inlet 116: cold air outlet
117: intake circulation fan
140: evaporator
150: UPI filter
151: filter case 151a: inlet
151b: discharge port 152: substrate
153: lonizer

Claims (3)

The case body 110 is partitioned up and down by partition walls 111 and divided into a product display room 112 and a machine room 113, a plurality of shelves 114 are installed inside the product display room 112, The display room 112 is blocked from the outside by a transparent glass 112a,
The partition wall 111 has a plurality of circulation air intake ports 115 and cool air outlets 116, and the circulation air intake ports 115 are elongated holes penetrating vertically and upward along the longitudinal direction of the front side of the partition wall 111. The cold air outlet 116 is formed in the form of a long hole penetrating up and down along the longitudinal direction of the rear side of the partition wall 111,
Inside the machine room 113, a compressor, a condenser, an expansion valve, and an evaporator 140 are installed as devices necessary for the refrigeration cycle, and an intake circulation fan 117 is installed on the front side of the evaporator 140, and an intake circulation fan ( 117) is supported by a duct 150b, and the front portion of the duct 150b is formed as an inclined surface 150a, and an intake circulation fan 117 is installed on the inclined surface 150a to the inside and outside of the duct 150b. It is installed through the
When the intake circulation fan 117 operates, the air inside the product display room 112 is forcibly sucked into the evaporator 140 inside the machine room 113 through the circulation air intake 115 of the partition wall 111, and the duct 150b The air sucked into the evaporator 140 by the guide is changed to cold air through heat exchange with the evaporator 140, and then discharged into the product display room 112 through the cold air outlet 116 of the partition wall 111. Repeatedly By forming a convection circulation structure, the inside of the product display room 112 is made in a low temperature state, and the intake circulation fan 117 moves through the circulation air intake 115 of the partition wall 111 by the inclined surface 150a of the duct 150b. Since it is directed toward, it increases the efficiency of cold air circulation,
An Ultra Plasma Ion (hereinafter referred to as UPI) filter 150 is installed on the back of the intake circulation fan 117, and the UPI filter 150 continuously raises the voltage between the (+) pole and (-) of the filter. Plasma is generated and discharged by introducing an electric current, and the plasma decomposes water molecules in the air into hydrogen ions and oxygen ions, and the hydrogen ions and oxygen ions are formed as cluster ions of water molecule aggregates, and the cluster ions are harmful. It is quickly attached to the surface of a substance (including any one or more of viruses, bacteria, allergies, and various bacteria) and is changed into OH radicals. OH radicals instantly extract hydrogen from the surface proteins of harmful substances to decompose and It has the function and effect of decomposition and removal of protein by removing it, and the OH radical is combined with the hydrogen ion taken back to become moisture and returns to the air, so it is non-toxic and completely harmless to the human body.
The UPI filter creates OH radical (Hydroxyl Radical) by electrical action, and OH radical is a natural substance that is non-toxic and harmless to the human body. By removing it, it provides strong sterilization and disinfection, deodorization and purification functions for viruses and various bacteria in the air.
The UPI filter 150 is formed of a filter case 151 having a suction port 151a and a discharge port 151b on one side and the other side, respectively, and a cluster is formed on the substrate 152 inside the filter case 151 by an electrical action. An ionizer 153 for generating ions is installed,
The cluster ions generated by the ionizer 153 are quickly attached to the air inside the product display room 112 introduced through the suction port 151a by the intake circulation fan 117 and then changed to OH radicals, OH radicals is chemically decomposed and removed by being involved in germination and disinfection of contaminants contained in the air, and the air sterilized, disinfected, deodorized, and purified by OH radicals exchanges heat with the evaporator 140 to return to the product display room at a low temperature. (112) is discharged and circulated in a certain direction and repeatedly sterilized,
At the front side of the product display room 112, and on the left and right sides, there is a spacer jaw 111a having a height from the bottom of the partition wall 111 at a distance from each wall, and the spacer jaw 111a and the partition wall 111 on the front side An inclined surface 111b toward the center of the product display room 112 is formed between the floors of ), and a plurality of cold air outlets 116 are formed on the inclined surface 111b.
The cold air discharged into the product display room 112 is discharged to the center of the product display room 112 by the inclined cool air outlet 116, and the cool air outlet 116 is separated from each glass wall surface by the spacer jaw 111a. By placing a, the cold air inside the product display room 112 is minimized to contact the glass wall surface, thereby reducing the dew formation on the glass wall surface due to the temperature difference between the inside and outside of the glass wall surface.
The bottom of the partition wall 111 is located at the front, left and right sides of the product display room 112, is surrounded by a clearance jaw 111a having a height from the bottom of the partition wall 111, and is located lower than the inclined cold air outlet 116. By configuring the lower upper part 111c as the upper part, after being discharged through the cold air discharge port 116, heat exchange is performed with the air inside the product display room 112, so that the cold air containing moisture sinks and stays in the lower upper part 111c, A clean showcase with air sterilization and cleaning functions, characterized in that the cold air containing moisture in (111c) affects the water activity in the food to maintain the food inside the product display room (112) at water activity.
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