KR0128054B1 - Deordorizer in a refrigerator - Google Patents

Abstract

the cooling means(10) which cools the air in the chamber, the deodorant means(70) that includes the heater for the pyrolysis of the odor element adsorbed in the adsorbent(71), the combining means(20) for combining the deodorant device(70) to the evaporator(10).

Description

Deodorization of the refrigerator

1 is a cross-sectional view of the deodorizing device installation state of the present invention.

2 is a view showing the evaporator fastening state of the present invention (a) is a cross-sectional view, (b) is an axial cross-sectional view.

3 is a perspective view of an evaporator provided with a deodorizer of the present invention.

Figure 4 is an exploded perspective view of the deodorizing device coupling portion of the present invention.

Figure 5 is a side cross-sectional view showing a conventional deodorizer.

* Explanation of symbols for main parts of the drawings

100: refrigerator body 110: partition wall

111: internal space 120: freezer

121: freezer door 122: freezer chamber

123: freezer compartment inlet 130: refrigerating chamber

131: refrigerator compartment door 132: refrigerator compartment

133: cold room inlet 140: blowing fan

200: evaporator 210: cooling pipe

211: evaporator fin 220: heat sink

230: defrost heater 300: deodorizer

310: precious metal catalyst 320: pyrolysis heater

330: catalyst cover 340: fixture

341: hook 342: fixing defect

343: bite

The present invention relates to a deodorizer of a refrigerator, and more particularly, to a deodorizer of a refrigerator equipped with a deodorizer using an adsorption pyrolysis accumulator on a horizontal evaporator.

In general, the cooling system of the refrigerator is a low-temperature, low-pressure gaseous refrigerant is converted into a high-temperature, high-pressure gas state by the compressor and then cooled and condensed in the condenser to become a liquid state.

The liquid refrigerant flows through the capillary tube and is introduced into the evaporator under reduced pressure by the resistance of the capillary tube. In the evaporator, the refrigerant in the liquid state evaporates to a gaseous state and requires vaporization heat so that the external heat is sucked in. At this time, since the inside of the refrigerator absorbs heat in the refrigerator, the air in the refrigerator is cooled, and the cooled air repeats the refrigeration cycle in which cold air is supplied to the freezing compartment and the refrigerating compartment along the duct by a fan motor. . The air in the refrigerator is circulated by the fan motor while the refrigeration cycle is repeated. At this time, odor molecules generated from food stored in the refrigerator are also circulated with the cold air.

As a method for removing odor molecules circulated with cold air, a deodorization method is widely used to remove odor molecules in circulated air by a noble metal catalyst and to remove the odor molecules. As a winry that decomposes the odor molecules adsorbed by it, a high temperature of 200 ^° C. or higher is required to thermally decompose the odor molecules, so that an appropriate space for laying the heater is required.

Referring to the conventional case, as shown in FIG. 5, in the structure of the vertical evaporator in which the evaporator 2 is installed at the rear of the freezer compartment, the deodorization catalyst 3 and the heater 4 are used as the deodorizer for removing the odor. 2) excreted in the lower part.

The refrigerator deodorizer of such a vertical evaporator requires a space above a proper amount in order to protect the air circulation passage of the refrigerator from the heat generated by the heater 4 by installing the heater 4 under the evaporator 2. Prize. It has been recognized that it is not suitable to apply the deodorizer with the heater to a refrigerator of a horizontal evaporator having a low height.

The structure in which a deodorizer is installed in such a vertical evaporator is described in Japanese Patent Laid-Open Nos. Hei 2-52022, Hei 2-97882 and Hei 2-149315.

However, the above devices have been pointed out as a problem of reducing the deodorizing effect because the odor molecules in the circulating air are not completely adsorbed by the deodorizing catalyst because the unit area of the evaporator bottom space is large.

In addition, in a different form or a structure in which an evaporator (hereinafter referred to as a horizontal evaporator) is installed on a wall partitioning the freezer compartment and the refrigerating compartment, a separate deodorization device is installed, and thus a problem such as securing a thermal insulation space occurs. A separate deodorizer, such as an ozone deodorizer, had to be added to the refrigerator. The present invention is to solve the above-mentioned problems, the deodorizing device of the refrigerator to obtain a deodorizing effect and at the same time an efficient defrosting effect by installing a deodorizing device equipped with a noble metal catalyst and pyrolysis heater in the refrigerator of the horizontal evaporator The purpose is to provide.

In order to achieve the above object, the present invention maximizes the deodorizing effect by providing a deodorizing device directly on a part of the evaporator through which the ancient air of the refrigerator is concentrated, without providing a separate space for installing the deodorizing device. At the same time, it is characterized in that the defrost function is achieved by the defrost heater and the pyrolysis heater which is a deodorizing device.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a cross-sectional view of a side cross-sectional view of a refrigerator having a horizontal evaporator 200, the deodorizing device 300 of the present invention is mounted together with the horizontal evaporator 200.

The partition wall 110 partitioning the inside of the refrigerator body 100 up and down is formed by a heat insulating material, and the inside of the refrigerator body 100 is separated by the separation wall 100 into the upper freezer compartment 120 and the lower refrigerating compartment ( 130).

The freezing compartment 120 and the refrigerating compartment 130 are mounted to be opened and closed independently by the freezing compartment door 121 and the refrigerating compartment door 131, respectively. The horizontal evaporator 200 is installed in a horizontal state in the inner space 111 formed in the partition wall 110 partitioning the freezing chamber 120 and the refrigerating chamber 130.

Separation wall 111 and the freezing chamber 122 to the rear end; The refrigeration chamber 132 is extended downward, and the blower fan 140 is installed in the refrigerator main body 100 at the rear side.

When the blower fan 100 is driven, internal spaces of the freezing compartment 120 and the refrigerating compartment 130 are suctioned by the suction force through the freezing compartment side inlet 123 and the refrigerating compartment side inlet 133, respectively, as indicated by arrows. And then cooled in the freezer compartment 120 to maintain a predetermined freezer compartment temperature (e.g., -25 ^o C), while the refrigerating compartment 130 has a refrigeration temperature (e.g., about 3 ^o C). It is to lure.

The temperature control of the freezing chamber 120 and the refrigerating chamber 130 can be adjusted by discharging the amount of air cooled by the evaporator 200 toward the freezing chamber 120.

Horizontal evaporator 200 for cooling the air in the refrigerator is composed of a cooling pipe 210 in which a plurality of evaporator pins 211 are disposed at appropriate intervals. The evaporator pin 211 coupled to the cooling pipe 210 expands the outer area of the cooling pipe 210 through which cold air flows when cooling the high internal air, thereby giving a lot of contact opportunities with the ancient air to facilitate heat exchange. will be.

The heat sink 220 is installed on the upper side of the horizontal evaporation 200, that is, on the upper surface of the inner space 111, and a defrost heater is disposed on the upper side and the lower side of the evaporator 200 formed of the cooling pipe 210, respectively. 230 is fixedly installed so as to contact the evaporator pin 211 provided in the cooling pipe (210). In the present invention, as shown in Figures 2 and 3, the evaporator fins 211, which are attached to the cooling pipe 210 in the center rear left and right direction of the horizontal evaporator 200 is removed by a suitable interval space To ensure that the deodorizing device 300 is installed.

As a means for fastening the deodorizing device 300, as shown in FIG. 4, a locking ring 341 which is caught on both sides of the cooling pipe 210 and a pyrolysis heater 320 of the deodorizing device are fixed to the center thereof. The deodorizing apparatus 300 is cooled by the fastener 340 having a fixing flaw 342 and a pair of physical protrusions 343 for stably positioning the pyrolysis heater 320 under the fixing flaw 342. (210).

The deodorizing device 300 is composed of a pyrolysis heater 320 protruding at both ends and a plurality of noble metal catalyst 310 and the catalyst cover 330 surrounding the pyrolysis heater 320 on the outside.

Such deodorizing device 300 is fitted to the fixing flaw 342 of the fastener 340 to the pyrolysis heater 320 protruding at both ends during installation, and then the catch ring 341 of the fastener 340 is evaporator 200 Hang on the cooling pipe 210 to fix both ends.

The pyrolysis heater 320 of the deodorizing device 300 is a quartz heater, which is located inside the noble metal catalyst 310 and is energized by heating at the same time as the defrost heater 230, pyrolysis of odor molecules adsorbed to the noble metal catalyst 310. At the same time it is controlled to energize periodically during defrosting.

The catalyst cover 330 installed to cover the pyrolysis heater 320 is formed of heat-resistant and water-resistant materials, for example, aluminum, and the defrost water generated when removing frost formed on the evaporator 200 is pyrolysis heater 320. Prevent it from flowing down.

It looks at the operation and effects of the present invention configured as described above.

During normal operation of the refrigerator, the air in the freezer compartment 120 is sucked through the freezer compartment inlet 123 by the blowing operation of the blower fan 140, and the air in the refrigerator compartment 130 is also sucked through the freezer compartment inlet 133, thereby freezing the compartment. The inner space 111 formed in the dividing wall 110 partitioned vertically into the 120 and the refrigerating chamber 130 is joined.

In addition, the joined air is cooled through the evaporator 200, and part of the air is supplied to the freezer through the freezer compartment 122, while the other part is circulated through the freezer compartment 132 to the freezer compartment so that the freezer compartment 120 has a different storage temperature. To cool.

At this time, the air passing through the evaporator 200 is in contact with the noble metal catalyst 310 of the deodorizing device 300 disposed in the evaporator 200, the odor component contained in the air is adsorbed on the surface of the noble metal catalyst 310 Removed. Here, in general, the air introduced through the freezer compartment inlet 123 in the freezer compartment 120 is low in temperature and humidity and has a low odor molecular composition, whereas the air introduced through the freezer compartment inlet 133 is in the freezer compartment air. Compared with high temperature and humidity, it contains many odor molecules.

When such air is introduced, it is adsorbed by the deodorizer 300 installed in the evaporator 200. Since most of the air in the refrigerator passes through the inner space 111 of the separation wall 110 in which the evaporator 200 is disposed. Almost all odorous components contained in the high air can be adsorbed quickly.

In addition, if the cooling operation of the refrigerator continues, moisture contained in the air in the refrigerator is formed on the surface of the evaporator 200 to form frost. When the frost accumulates on the evaporator 200, the surface of the evaporator pin 211 of the evaporator is opened. Since the heat exchange cannot be achieved, the cooling effect is reduced.

Next, although not shown in the drawing, when the sum of the operation time of the compressor reaches a predetermined time, the operation of the compressor and the blowing fan 140 is stopped, and power is supplied to the defrost heater 230 disposed above and below the evaporator 200. At the same time, power is also supplied to the pyrolysis heater 320 so that the evaporator 200 is heated by the heat of the defrost heater 230 and the pyrolysis heater 320 to remove frost formed on the surface of the evaporator 200.

At the same time, the heat generated from the pyrolysis heater 320 is transferred to the noble metal catalyst 310 to heat the noble metal catalyst 310.

When the noble metal catalyst 310 is heated, odorous components adsorbed on the catalyst are oxidized and removed.

The precious metal catalyst 310 is heated in this manner so that the adsorption function, that is, the deodorization function, is regenerated.

When the defrost of the evaporator 200 is completed, power is also cut off to the defrost heater 230 and the pyrolysis heater 320.

During the defrosting function, the heat dissipation plate 220 disposed above and below the evaporator 200 in the separating wall 110 serves to spread the heat generated from the defrost heater 230 evenly throughout the evaporator 200. The deodorization apparatus 300 of the present invention installed at the rear end of the balanced evaporator 200 allows the air inside the high-temperature air introduced into the inner space 111 of the separation wall 110 to pass through most of the air, so that the high air is concentrated to maximize the deodorization. Can be achieved.

In addition, since the pyrolysis heater 320 of the deodorizing device 300 is disposed in the evaporator 200, it is possible to perform a pyrolysis function at the same time as defrosting, thereby saving power.

As described above, the deodorizing device of the present invention does not need another installation space for installing the deodorizing device, and since the deodorizing device is disposed at a location where the air inside the refrigerator is concentrated and circulated, most of the odor molecules can be adsorbed and deodorized. It is possible to complete defrosting in a short time, and it is a useful technology to obtain the effect of improving the product quality and saving power.

Claims (3)

In the refrigerator equipped with a horizontal evaporator 200 which is a cooling means for cooling the air in the interior in the internal space 111 formed in the partition wall 110 partitioning the freezer compartment and the refrigerating compartment, the internal space 111 A horizontal evaporator 200 which is a horizontally mounted cooling means; Pyrolysis heater 320 and catalyst cover for pyrolyzing the noble metal catalyst 310 for adsorbing the odor and the odor molecules adsorbed on the noble metal catalyst 310 as deodorizing means for adsorbing and deodorizing the odor component in the circulated air. Deodorizing device 300, consisting of 330 and mounted to a portion of the evaporator 200; A deodorizer (300) mounted on a portion of the evaporator (200) as the horizontal evaporator (200) and the deodorizer (300); The deodorizer of the refrigerator, characterized in that it comprises a fastener (340) is a fastening means for firmly coupling the horizontal evaporator 200 and the deodorizer (300). According to claim 1, The deodorizing device 300 is formed in the space formed by removing the evaporator pin 211 outside the cooling pipe 210 of the rear end of the evaporator 200 is formed with a catch ring 341 and the fixing flaw 342 Refrigerator deodorizing device characterized in that for coupling the cooling pipe 210 of the evaporator 200 and the protruding pyrolysis heater 320 of the deodorizing device 300 by a fixture (340). According to claim 1, wherein the heat sink 220 is installed on the upper portion of the evaporator 200 heat generated from the pyrolysis heater 320 of the defrost heater 230 and the deodorizer 300 of the fraud evaporator 200 Deodorizer of the refrigerator, characterized in that to diffuse uniformly with respect to the evaporator (10).