KR200355272Y1 - Cool air circulation system of refrigerator - Google Patents

Abstract

The present invention is a cold air circulation device inside the refrigerator, the cross flow fan is blown to the lower portion installed in the horizontal direction on the upper front of the inside of the refrigerator, the evaporator is installed on the bottom of the cross flow fan, the cross flow fan and the evaporator inside The fixed air inlet grille is formed on the front side of the front side, which is fixedly coupled, and the inflow side of the cross flow fan is formed. It relates to a cold air circulation device of a refrigerator having a fan cover and a working plate having a temperature controller and a fluorescent lamp switch attached to the right side of the cross flow fan.

The present invention has the effect of increasing the cooling efficiency by directly blowing to the evaporator, as well as widening the use area of the inside of the refrigerator and providing antibacterial and deodorizing effect.

Description

Cool air circulation system of refrigerator

The present invention relates to a cold air circulation device of a refrigerator, and more specifically, by directly blowing to an evaporator using a cross flow fan of a zeolite-based inorganic antimicrobial agent to increase cooling efficiency, The present invention relates to a cold air circulation device of a refrigerator that increases the use area of the front surface of the refrigerator and provides antibacterial and deodorizing effects.

In general, a refrigerator (장치, refrigerator) is a device for the purpose of low-temperature storage of food, the refrigerator is from the domestic refrigerator of several tens of liters to hundreds of liters to a commercial refrigerator of several tens of kL. It is different from cold storage in that neither can be seen as a building. There are electric refrigerators, gas refrigerators, ice refrigerators, and electronic refrigerators according to the cooling method. The most popular ones are electric refrigerators.

The speed of cooling in the refrigerator depends on the shape, size, and thickness of the food, but it is generally good to leave it for 3 to 4 hours. Hot foods should be stored before cooling to prevent spoilage of other foods as the temperature rises in the refrigerator. In addition, the inside of the refrigerator is cooled evenly by the convection of air, so if you put a lot of stuff or put something like a tray on the middle shelf, the lower part does not cool well. Because the inside of the refrigerator is low temperature, the vapor pressure is low, so the water contained in the food is taken away, so the food is dried. In addition, the smell is also volatilized with water, so the smell is full and the smell is easy to transfer to other foods. Therefore, things that should not be dried, those with strong odors, etc. should be stored in airtight containers or wrapped in vinyl and refrigerated. Also, if you open and close the refrigerator frequently in the summer, the temperature inside it will rise immediately, so be careful because the door will not recover for a few minutes.

Dual length The principle of electric refrigerators commonly used is that when the refrigerant Freon is evaporated in the evaporator, the heat in the storage compartment is absorbed and cooled by the heat of vaporization, and the outside liquefies and releases the absorbed heat. This action is repeated by the electric motor so that the temperature in the storage chamber is kept at a low temperature.

That is, the refrigerant gas compressed in the 'compressor' at the bottom of the refrigerator is cooled while passing through the 'condenser' at the rear, and again passes through the 'capillary tube' to become low temperature and low pressure liquefied gas. The liquefied gas turns into a gas in an evaporator, which takes away a lot of heat and drastically lowers the temperature inside the refrigerator. The refrigerant gas returns to the compressor again and repeats this operation to keep the temperature of the refrigerator cold. 'Refrigerants', which transfer heat, mainly use freon gas. Freon gas destroys the ozone layer, causing air pollution.

The structure of such a refrigerator is a refrigerator (or a cooler, also called an evaporator), a reservoir, and an operation control device. The refrigerator serves to keep the inside of the refrigerator at a low temperature by compressing and circulating the refrigerant to absorb heat in the refrigerator and dissipate it to the outside. The reservoir is a container in which food is stored, and an insulation material is contained between the inner box and the outer box to block the outside air so that the internal temperature cooled by the freezer does not rise. The operation control device includes a temperature controller and a defroster. The temperature control device is a device for maintaining the inside of the refrigerator at an appropriate temperature. The temperature varies depending on the food to be stored, but is generally 5 to 7 ° C. The defroster attaches to the evaporator as moisture in the outside air invaded by opening and closing of the refrigerator door, water vapor evaporated from food in the refrigerator, and the like as frost. However, if the frost is too high, the cooling power is lowered and should be removed. The defroster is a device for melting frost, and there are automatic, dial, and push button methods.

Figure 5 is a side cross-sectional view showing a cold air circulation structure of the conventional refrigerator, the cold air circulation structure of the refrigerator is a propeller-type fan (30a) to the motor 31 for the cold air circulation of the evaporator (or cooler, freezer) 20 Is attached to a metal plate (hereinafter referred to as a fan cover) 10a coated with powder and used.

That is, after the motor 31 is combined and attached to the steel bracket, the fan cover 10a is mounted, the drain cock is fixed, the silicone caulking is applied to the joint so that the condensation count does not leak out, and the tape-treated sponge is attached to both sides. After attaching the evaporator 20 to the back of the ceiling inside the refrigerator and attaching the fan cover 10a assembly set previously prepared outside, attaching an assembly plate such as a temperature controller and a fluorescent light switch.

However, the method of assembling by such a process has a large number of parts, which is complicated and takes a long time to assemble, and a leakage current flows through the bracket 32 of the iron fan motor 31 to reduce the rotation speed of the fan 30a. In addition, there is a high possibility that the food stored in the refrigerator is contaminated due to rust generated in the iron fan (30a) motor bracket 32 and the fan cover (10a) during long-term use.

In addition, when the fan motor 31 of the propeller type fixed at an angle is operated, air hitting the ceiling of the refrigerator is pushed down through the evaporator 20 to descend to the rear wall of the refrigerator, so that it is difficult to expect a rapid cooling effect due to vortex generation. In addition, the noise is severe and occupies a lot of space in the upper front of the inside of the refrigerator, which makes it difficult to use the space efficiently.

The present invention is to solve the above problems, by directly blowing the evaporator using a cross flow fan (zeolite-based inorganic anti-bacterial mixed molding) to increase the cooling efficiency as well as to the inside of the refrigerator It is an object of the present invention to provide a cold air circulation device of a refrigerator that increases the use area of the part and provides an antibacterial and deodorizing effect.

1 is a side cross-sectional view showing a cold air circulation of the present invention embodiment,

2 is a front sectional view showing a fan cover of the present invention embodiment;

Figure 3 is an enlarged side cross-sectional view of the main portion of the fan cover according to an embodiment of the present invention,

Figure 4 is an enlarged side cross-sectional view showing the main portion of the insert-type cock is an embodiment of the present invention,

Figure 5 is a side cross-sectional view showing a cold air circulation structure of a conventional refrigerator.

<Explanation of symbols for the main parts of the drawings>

1: refrigerator 10,10a: fan cover

11: circulating air induction grill 12: cold air hole

13: cold air supply hole 14: drain hole

15: guide slope required portion 16: leak prevention protrusion

17: insertion type cock 18: fitting recess

19: drain hose 20: evaporator

30,30a: cross flow fan 31: motor

32: bracket 40: operating plate

41: temperature controller 42: fluorescent light switch

The present invention for achieving the above object is, in the cold air circulation device inside the refrigerator, the crossflow fan is blown to the lower portion installed in the horizontal direction on the upper front of the inside of the refrigerator, the evaporator is installed on the lower end of the crossflow fan, The cross flow fan and the evaporator are fixed inside, and the circulating air induction grill is formed at the upper part of the front side, which is the inflow side of the cross flow fan, and the cold air hole supplying the cool air to the first compartment inside the refrigerator at the center side is a two-row intersection horizontally. And a fan cover which is formed and a cold air supply hole is formed at a lower portion thereof, and a working plate attached to a right side of the cross flow fan and having a temperature controller and a fluorescent light switch.

The cross flow fan has a feature of mixing and molding a zeolite inorganic antimicrobial agent. At this time, the zeolite inorganic antimicrobial agent is obtained by ion-exchanging silver zinc ions using the zeolite as a carrier.

A drain hole is formed at the lower center side of the fan cover and is inclined toward the center on the inner side to flow the condensation recess to guide the condensation water to the drain hole at the time of defrosting; The prevention protrusion has a characteristic of being formed in the drain hole side in the horizontal direction.

The drain hole has a feature of having an insertion type cock having a fitting recess into which an upper end of the drain hose is fitted.

Hereinafter, the present invention in more detail by the accompanying drawings as follows.

1 is a side cross-sectional view showing a cold air circulation of the present invention embodiment, Figure 2 is a front sectional view showing a fan cover of the present invention embodiment, Figure 3 is an enlarged side cross-sectional view of the main portion of the fan cover of the present invention embodiment, Figure 4 Is an enlarged side cross-sectional view showing the main portion of the insert-type cock is an embodiment of the present invention.

Referring to the use state of the present invention as follows.

The cold air circulation structure of the refrigerator according to the present invention includes a cross flow fan 30 which is blown to a lower portion installed horizontally on the upper front of the inside of the refrigerator 1, an evaporator 20 installed at a lower end of the cross flow fan 30, and The cross flow fan 30 and the evaporator 20 are fixedly coupled therein, and the circulating air induction grill 11 is formed in the upper part of the front side, which is the inflow side of the cross flow fan 30, and the refrigerator 1 is formed at the center side. The cold air hole 12 for supplying cold air to the upper first space inside the fan cover 10 is formed in two rows crosswise horizontally and the cold air supply hole 13 is formed at the bottom, and is attached to the right side of the cross flow fan 30. It consists of a working plate 40 having a thermostat 41 and a fluorescent light switch 42.

That is, the cross flow fan 30 mixed with the zeolite inorganic antimicrobial agent is installed at the top of the wall behind the inside of the refrigerator 1, the evaporator 20 is installed at the bottom thereof, and the circulating air induction grill 11 is molded. In consideration of the cooling of the upper compartment of the upper part of the refrigerator 1, the cold air hole 12 having a width of 5 mm and a length of 5 cm is cross-molded in two rows horizontally, forming an angle of 130 degrees and tilted toward the center to induce condensation during defrosting. The recessed part 15 and the leak prevention protrusion part 16 are formed in several lower parts, respectively, and attach the fan cover 10 which shape | molded the insertion type cock 17 which can fit the drain hose 19, and a cross flow fan 30 is made by attaching a working plate 40 having a temperature controller 41 and a fluorescent lamp switch 42 to the right side.

The cross flow fan 30 is preferably mixed with a zeolite inorganic antimicrobial agent.

Drain hole 14 is formed in the lower center side of the fan cover 10 and inclined toward the center on the inner surface flow inclined recess portion 15 to guide the condensation water to the drain hole 14 during defrosting, and the flow inclined portion A leakage preventing protrusion 16 protruding upward is formed at the inner lower end of the fan cover 10, which is a lower side of the fan cover 10, toward the drain hole 14 in the horizontal direction.

The drain hole 14 is formed with an insertion type cock 17 having a fitting portion 18 into which the upper end of the drain hose 19 is fitted.

As shown in FIG. 2, the fan cover 10 of the present invention forms a circulating air induction grill 11 at intervals of 10 mm in consideration of smooth inflow of the circulating air, protection of the cross flow fan 30, and user safety. On the right side, a hole for mounting the operation plate 40 having the temperature controller 41 and the fluorescent lamp switch 42 is formed, and in the lower end of the middle, a horizontal groove is formed to provide a cold air supply hole to the cold air outlet of the upper end of the refrigerator 1. (13) is formed.

The lower part of the fan cover 10 is configured to be folded 45 degrees so that the condensation water in the evaporator 20 when the condensation water falls into the center to be discharged into the drain hole 14, the inclined groove 15 is a concave groove of the bush chattery pattern (15) To form.

At the bottom of the fan cover 10, two rows of low oval convex rib leakage leak prevention protrusions 16 are formed to prevent the dew condensation from falling back by being pushed by the cross flow fan 30 and prevented when cold air goes out. Minimize the phenomenon and obtain the effect of increasing the strength of the fan cover (10).

At the center end of the bottom of the fan cover 10, a drain hole 14 is formed to discharge condensed water. At the end of the drain hole 14, a fitting recess 18 is formed at the inner end thereof so that the drain hose 19 can be inserted. There is no stalk in the tube, so there is no risk of damage and the appearance is clean.

In addition, by forming and mixing the zeolite-based inorganic antimicrobial agent when forming the fan cover 10 can be obtained semi-permanently antibacterial deodorizing effect.

As described above, the present invention can obtain the antibacterial deodorizing effect semi-permanently in the refrigerator 1 by using the cross flow fan 30 mixed with the zeolite inorganic antibacterial agent for cold air circulation, and the cross flow fan 30. And by attaching the evaporator 20 to the rear wall and the fan cover 10, it is possible to refrigerate the temperature of the internal storage of the refrigerator 1 evenly faster than the method of installing the fan and the evaporator on the existing ceiling.

Looking at the internal temperature change of the refrigerator after installation of the present invention is as follows (Table 1).

Table 1

(Existing / improvement) Temperature measurement record table for each commercial refrigerator operation time (30 minutes interval)

(Temperature ℃)

back side Front thermometer One 2 3 4 5 6 7 8 9 10 existing Improving existing Improving existing Improving existing Improving existing Improving existing Improving existing Improving existing Improving existing Improving existing Improving 32 32 32 32 31 32 31 31 33 32 32 32 32 31 32 34 32 32 30 31 21 19 23 22 22 23 21 23 26 22 26 22 24 23 19 15 27 20 21 22 15 14 19 18 18 18 17 19 21 19 22 19 19 18 15 12 22 18 20 19 13 9 16 12 15 13 14 13 19 15 20 14 15 12 12 8 19 14 16 14 10 7 13 10 12 10 11 10 16 13 17 11 12 9 11 7 17 12 14 12 8 5 11 8 10 8 9 8 14 11 15 9 10 7 9 6 14 10 11 9 7 4 10 6 9 6 8 6 12 8 13 7 7 4 8 5 12 7 10 7 6 4 8 5 7 5 6 5 11 7 12 5 6 3 7 4 10 3 8 3 6 3 7 4 7 4 6 4 9 5 10 4 5 2 6 4 9 3 7 3 5 3 6 4 5 4 5 4 8 5 9 3 4 2 6 4 8 4 5 3 4 5 4 4 7 7 3 5 7 4 3 4 3 2 5 6 One 4 5 3 2 3 2 One 4 5 One 3 4 2 2 2 2 One 4 4 0 3 3 One

(※ underscore indicates the case where the improvement method is lower than the existing method)

In this way, the present invention is blown directly to the evaporator to increase the cooling efficiency, as well as to widen the use area of the inside of the refrigerator and provide an antibacterial and deodorizing effect.

The present invention is not limited to the above-described specific preferred embodiment, and any person having ordinary skill in the art to which the present invention pertains may make various modifications without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (4)

In the cold air circulation device inside the refrigerator; A cross flow fan 30 which is blown to the lower part installed in the horizontal direction at the upper front of the inside of the refrigerator 1; An evaporator 20 installed at a lower end of the cross flow fan 30; The cross flow fan 30 and the evaporator 20 are fixedly coupled therein, and the circulating air induction grill 11 is formed in the upper part of the front side, which is the inflow side of the cross flow fan 30, and inside the refrigerator 1 at the center side. A fan cover 10 in which cold air holes 12 for supplying cold air to the upper first space are formed in two rows in a horizontal direction and cold air supply holes 13 are formed at a lower portion thereof; It is attached to the right side of the cross flow fan 30 is a cold air circulation device of the refrigerator, characterized in that it comprises a working plate (40) having a temperature controller (41) and a fluorescent lamp switch (42). The method of claim 1; The cross flow fan (30) is a cold air circulation system of the refrigerator, characterized in that the mixed molding of the inorganic antimicrobial agent by ion-exchange zinc with zeolite as a carrier. The method of claim 1; A drain inclination portion 15 formed at a lower center side of the fan cover 10 and inclined toward the center at an inner side to guide condensation water to the drain hole 14 during defrosting; Refrigerator air circulation system of the refrigerator, characterized in that the leakage preventing protrusions 16 protruding upwardly formed in the drain hole 14 side in the inner lower end of the fan cover 10, which is the lower side of the flow inclined recess (15). The method of claim 3; The drain hole 14 has a cold air circulation apparatus of the refrigerator, characterized in that it has an insertion type cock (17) having a fitting portion 18, the upper end of the drain hose 19 is fitted in the lower end.