KR101328770B1 - A reheating dehumidification system for refrigerator - Google Patents

Abstract

The present invention relates to a reheat dehumidification system of a bottom freezer type refrigerator, and includes a heater on one side of a grill pan of a freezer compartment to convert cold air of low temperature and high humidity into air of high temperature and low humidity and discharge the air into a freezer compartment. The present invention relates to a reheat dehumidification system of a bottom freezer-type refrigerator that removes frost and moisture attached to the surface of food and the internal structure of the refrigerator.

The reheating dehumidification system of the refrigerator according to the present invention includes a freezer compartment provided at a lower side of the refrigerator, a freezer compartment door for selectively shielding the internal space of the freezer compartment, an evaporator provided at the rear side of the freezer compartment, and a cold air generated in the evaporator. A cold air supply duct guided to be supplied to the freezing compartment and a cold air supply duct provided at one side of the cold air supply duct, and a damper selectively blocking the cold air supplied to the cold compartment and a reheating heater provided at one side of the cold air supply duct. The reheating heater is operated whenever the refrigerating chamber door is opened and closed. According to the present invention as described above, there is an advantage that the amount of frost formed on the freezing chamber is reduced.

Refrigerator, freezer, bottom freezer, damper, cold, compressor, evaporator, frost

Description

A reheating dehumidification system for refrigerator}

1 is a front view showing a refrigerator to which a reheat dehumidification system of the refrigerator according to the present invention is applied.

Figure 2 is a side cross-sectional view showing a cold air environment path of the refrigerator shown in FIG.

3a and 3b schematically illustrate a circulation path of cold air by the reheat dehumidification system of the refrigerator according to the present invention.

Figure 4 is a flow chart illustrating a reheat dehumidification process of the refrigerator according to the present invention.

Explanation of symbols on the main parts of the drawings

100 ..... Refrigerator 120 ..... Barrier

140 ..... Compressor 160 ..... Evaporator

170 ..... cold air supply duct 180 ..... cold air return duct

190 ..... Defrost heater 200 ..... Refrigerator

220 ..... Refrigerating chamber door 222 ..... Refrigerating chamber basket

224 ..... Refrigerator Shelf 240 ..... Organic Special Room

260 ..... Multipurpose Wide Room 280 ..... Dispenser

300 ..... Freezer 320 ..... Freezer door

322 ..... Door handle 330 ..... Sub drawer

340 ..... Cooling Fan 360 ..... Grill Fan

362 ..... Cold air outlet 380 ..... Damper

390 ..... reheat heater

The present invention relates to a reheat dehumidification system of a refrigerator. More particularly, a heater is provided on one side of a grill pan of a freezer compartment to convert cold air of low temperature and high humidity into air of high temperature and low humidity and discharge the air into a freezer compartment. The present invention relates to a reheat dehumidification system of a refrigerator that removes frost and moisture adhering to the food stored in the i) and the surface of the internal structure of the refrigerator.

In general, a refrigerator is a device for discharging cold air generated by a refrigeration cycle consisting of a compressor, a condenser, an expansion valve, and an evaporator to control the temperature in the refrigerator to freeze or refrigerate and store food. Top Mount-type with lower compartment, Bottom freezer-type with compartments for freezer and freezer compartment, Side by side with compartment for freezer compartment and freezer compartment -type).

Among the bottom freezer-type refrigerators, the upper side of the inner space partitioned by a barrier is provided to form a refrigerator compartment and at least one refrigerator compartment door rotates in one direction to shield the interior compartment. In addition, the lower side forms a freezing compartment and a freezing compartment door slidably moved forward and backward is provided to selectively shield the inner space.

In addition, the rear wall of the freezing chamber is provided with a cold air outlet for discharging the cold air generated in the evaporator, a drawer for storing food in front of the cold air outlet.

The drawer is formed in a box shape with an upper opening and is provided at the rear side of the freezer compartment door, and is provided in various sizes as necessary to separately store food.

In addition, the drawer for a freezer compartment of the bottom freezer type refrigerator as described above is guided to slide out / rearward in front and rear in association with the freezer compartment door by guide rails installed on both sidewalls of the freezer compartment.

Therefore, when the user keeps food in the freezer compartment, the user pulls forward while holding the handle provided in the freezer compartment door to store the food in the opened upper surface of the drawer drawn out together with the freezer compartment door.

However, the refrigerator according to the prior art as described above has the following problems.

In the refrigerator of the bottom freezer type according to the prior art, the cold air of low temperature and low humidity is discharged into the inside of the air in which the moisture contained in the outside air is standing in the high temperature structure, thereby cooling the inside of the high temperature structure while dehumidifying. Let's go.

However, since the low temperature cold air has a small amount of saturated steam, the moisture contained in the outside air cannot be sufficiently dehumidified, and some of the cold air freezes in a state of being implanted in the internal structure by the cold air.

Accordingly, the refrigerator of the bottom freezer type has a problem in that the internal structure, in particular, the drawer increases the load by increasing the amount of freezing in the long-term use, and thus the appearance is not beautiful when the drawer is pulled out.

In addition, the frost on the drawer is not only drawer, but also on food stored in the drawer, thereby increasing the user's emotional discomfort.

In addition, as the amount of freezing in the food and food as described above increases the load of the drawer there is a problem that it is not easy to pull out / inserting the drawer forward and backward.

In addition, as the load applied to the drawer increases as described above, there is a problem that burnout occurs in the product during the withdrawal / intake process of the drawer.

An object of the present invention, which was created to solve the problems of the prior art as described above, reheats the heater on the rear side of the cold air discharge port so that the cold air generated in the evaporator is converted into air of high temperature and low humidity before being discharged into the air and discharged into the air. It is to provide a reheat dehumidification system of the refrigerator provided.

Another object of the present invention is to provide a reheating dehumidification system of a refrigerator which further comprises a separate damper on a path through which the cold air generated in the evaporator is supplied to the refrigerating compartment to operate the reheater and to block the air supplied to the refrigerating compartment. To provide.

The present invention for achieving the above object, the present invention for achieving the above object, the freezer compartment provided in the lower side of the refrigerator; A freezer compartment door selectively shielding an internal space of the freezer compartment; An evaporator provided at the rear side of the freezing compartment; A cold air supply duct guiding the cold air generated by the evaporator to be supplied to the refrigerating chamber and the freezing chamber; A damper provided at one side of the cold air supply duct to selectively block cold air supplied to the refrigerating chamber; A defrost heater provided at one side of the evaporator to remove frost formed on the evaporator; And a reheating heater provided at one side of the cold air supply duct, the reheating heater being operated when the freezing chamber door is opened and closed, wherein the damper closes the flow path of the cold air supply duct for a predetermined time immediately after the freezing chamber door is closed. The heater is operated for a set time to supply high temperature and low humidity air into the freezer compartment.

The damper is shielded at the time of operation of the reheating heater, characterized in that open at the time of normal supply of cold air.

The reheat heater is characterized in that it is mounted to the cold air outlet rear side of the grill pan forming the rear wall of the freezing chamber.

In another aspect, the present invention, a freezer compartment, an evaporator provided on the rear side of the freezer compartment, a cooling fan provided on the upper side of the evaporator, a cold air duct for guiding the cold air generated in the evaporator to the freezer compartment, provided on one side of the cold air duct The reheating heater is characterized in that it is operated for a predetermined time immediately after the shielding of the door shielding the freezer compartment by a timer.

The timer may be reset when the freezer compartment door is opened.
The compressor for compressing the refrigerant is characterized in that it is stopped while the reheat heater is driven.

According to the present invention having such a structure, there is an advantage that the amount of frost formed on the freezer compartment is reduced.

Hereinafter, with reference to the accompanying drawings will be described in detail the reheat dehumidification system of the refrigerator according to the present invention.

1 is a front view showing a refrigerator to which the reheat dehumidification system of the refrigerator according to the present invention is applied, and FIG. 2 is a side cross-sectional view showing a cold air environment path of the refrigerator shown in FIG. 1.

As shown in these drawings, the refrigerator 100 according to the present invention has a bottom freezer-type in which a freezer compartment is formed at a lower portion thereof, and a substantially rectangular storage space is divided up and down by the barrier 120. , The partitioned upper side forms a refrigerating chamber 200 for refrigerating and storing food, and the lower side forms a freezing chamber 300 for freezing and storing food, so that food can be stored separately according to a purpose of use and a storage method.

In addition, the refrigerating chamber 200 has a front surface shielded by the refrigerating chamber door 220 mounted to be rotatable in one direction to prevent the cool air in the inside of the refrigerator from leaking to the outside and the refrigerating chamber door 220. The rear side is provided with a plurality of refrigerating chamber basket 222 for storing food, such as drinks or drinking water, the front of the refrigerating chamber door 220 to extract the ice or drinking water without opening the refrigerating chamber door 220 A dispenser 280 is further provided.

In addition, the internal space of the refrigerating chamber 200 is defined by a plurality of refrigerating chamber shelves 224.

In addition, the refrigerating chamber 200 is configured as a separate space, the organic light special room 240 and the multi-purpose wide room 260 which can be individually controlled temperature is further provided, the organic light special room 240 has a variety of colors A plurality of LEDs are provided to irradiate the light so that the stored food can be stored more freshly by irradiating light of a color suitable for the stored food.

On the other hand, the freezing chamber 300 provided below the refrigerating chamber 200 has an appearance formed by the freezing chamber door 320, the main drawer (not shown) is provided on the rear side of the freezing chamber door 320.

In addition, a sub drawer 330 is provided above the main drawer (not shown), and an ice making chamber 400 is provided above the sub drawer 330 to generate ice. The freezer compartment drawer 270 is further provided to the right side of 400.

In addition, although not shown in the drawings, sliding guides are formed on both inner walls of the freezing compartment 300 along the front and rear longitudinal directions of the freezing compartment 300 so that the rolling members to be described below are inserted, and the sub-drawers ( Both side surfaces of the 330 is provided with a rolling member that allows the user to easily withdraw / retract the sub drawer 330 in front and rear to store food.

On the other hand, the rear side of the freezing chamber 300 is further provided with a compressor 140 for compressing the refrigerant at high temperature and high pressure and an evaporator 160 for evaporating the refrigerant generated by the compressor 140 to exchange heat with the air introduced into the refrigerator. The cold air generated by the evaporator 160 is guided through the cold air supply duct 170 to the refrigerating chamber 200 and the freezing chamber 300.

In more detail, the cold air supply duct 170 has the evaporator 160 accommodated therein as shown in FIG. 2, and a cooling fan 340 is provided above the evaporator 160.

In addition, a cold air outlet 362 is formed in the grill pan 360 forming the rear wall of the freezer compartment 300, and cold air is supplied to the freezer compartment 300 through the cold air outlet 362.

In addition, a portion of the cold air supply duct 170 is branched to supply the cold air generated in the evaporator 160 to the refrigerating chamber 200 on the upper side of the cold air discharge port 362.

On the other hand, the rear side of the cold air discharge port 362 is provided with a reheat heater (390).

The reheating heater 390 is for converting the cold air supplied to the freezing chamber 300 into high temperature and low humidity air, and although not shown in the drawing, is connected to a timer to operate only for a predetermined time, and the grill pan 360 ) Is further provided with an adapter (not shown) to allow the reheat heater 390 to be located at the rear side of the cold air discharge port 362.

The timer (not shown) is reset at the time when the freezer door 320 is opened, and is counted from the moment when the freezer door 320 is shielded to adjust the operation time of the reheat heater 390.

When the reheating heater 390 controlled as described above is operated, the heated air may flow into the refrigerating chamber 200 through the cold air supply duct 170, so that the damper 380 for blocking the barrier 120 is blocked. 2, that is, the damper 380 is provided at an inlet portion in which cold air flows into the freezing compartment 300 and the refrigerating chamber 200, and the cold air flows into the refrigerating chamber 200.

The damper 380 is selectively operated to block cold air supplied to the refrigerating chamber 200, and a description of the operation of the damper 380 will be described with reference to the accompanying drawings.

On the other hand, the cold air supplied to the refrigerating chamber 200 is circulated inside the refrigerating chamber 200, the heat exchange with the bet and then returned to the evaporator 160 through the cold air return duct 180, thereby to the evaporator 160 Moisture contained in the heat-exchanged air is frozen.

Therefore, a defrost heater 190 is provided below the evaporator 160 in order to remove water frozen in the evaporator 160, that is, frost, and the defrost heater 190 operates only during defrosting operation. Detailed description of the defrosting operation is a known technique and will be omitted.

Hereinafter will be described with reference to the accompanying drawings for the operation of the present invention having the configuration as described above.

3A and 3B are views schematically illustrating a circulation path of cold air by the reheat dehumidification system of the refrigerator according to the present invention, and FIG. 4 is a flowchart illustrating a reheat dehumidification process of the refrigerator according to the present invention.

As shown in these drawings, first, the user grips the door handle 322 provided in the freezer compartment 320 and pulls it forward in order to store the food in the freezer compartment 300 or withdraw the stored food. .

When the door handle 322 is pulled as described above, the main drawer (not shown) is drawn out together with the freezing chamber door 320 and the front of the sub drawer 330 is exposed to the outside.

In the state as described above, the user stores the food or draws out the food stored in accordance with the purpose of use. At this time, outside air flows into the freezing compartment 300 and the structure of the inside of the freezing compartment 300, in particular, the sub Water droplets are implanted in the front portion of the drawer (330).

In addition, when the freezing chamber door 320 is opened, the compressor 140 and the cooling fan 340 are continuously checked when the inside temperature of the freezing chamber 300 exceeds the set reference temperature. In operation, the cold air is supplied to the inside of the refrigerator, and the compressor 140 and the cooling fan 340 are stopped when the inside temperature is maintained below the reference temperature.

On the other hand, when the user is finished using the freezer compartment 300, the freezer compartment 320 is pushed backward to shield the inside of the refrigerator again, wherein the damper 380 to the refrigerating compartment 200 The reheating heater 390 is operated while shielding the circulation path of the incoming cold air.

That is, the damper 380 operates at the time when the freezing chamber door 320 is shielded to shield the cold air supply duct 170, and the reheating heater 390 is operated for the timer setting time. In this case, since the operation of the compressor 140 is stopped and the refrigerant for generating cold air is not supplied, only air circulation occurs during the operation of the reheating heater 390.

When the reheating heater 390 is operated during the timer setting time as described above, the low temperature low humidity cold air passing through the evaporator 160 is changed to high temperature low humidity air, and the high temperature low humidity air is the cooling fan 340. Forced circulation to the freezing chamber 300 by the).

That is, the cold air heated by the reheating heater 390 is changed to high temperature and low humidity air. The high temperature and low humidity air has a saturated steam content more than the cold air at low temperature.

Therefore, when the high temperature and low humidity air is forcedly circulated into the freezing compartment 300 as described above, after the opening and closing of the freezing compartment door 320, the water droplets formed on the front surface of the high drawer structure, in particular, the sub drawer 330. It is dehumidified by the high temperature and low humidity air supplied.

On the other hand, the dehumidification process as described above is made only the operating time of the reheating heater 390, that is, the timer set time.

When the operation time of the reheating heater 390 is completed, the compressor 140 is restarted to generate a refrigerant, and the refrigerant generates cold air having low temperature and low humidity through the evaporator 160 to cool the fan 340. Forced circulation to

When the cool air is circulated for a predetermined time by the cooling fan 340 as described above, the internal temperature of the cold air supply duct 170 is below the reference temperature, that is, the same state as in normal operation, and the damper thermo (not shown) Detected by the damper 380 will be opened.

And, as described above, after the damper 380 is opened, the refrigerator 100 performs normal operation, and the freezer door to allow the user to store or withdraw food into or inside the door of the freezer compartment 300 during normal operation. When the 320 is opened, the above process is repeated.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications may be made by those skilled in the art to which the present invention pertains.

For example, it may be possible to mount the damper anywhere within the section before the cold air is discharged from the inside of the cold air supply duct to the refrigerating chamber, but it will be obvious that the damper is included in the technical spirit of the present invention.

The present invention prevents the inflow of air into the refrigerating compartment by shielding one side of the cold air supply duct for guiding the supply of cold air whenever the freezer door opening and closing of the bottom freezer type refrigerator is made. By converting the supplied cold air into high temperature and low humidity air, there is an advantage that can effectively dehumidify the moisture formed on the internal structure of the freezer compartment.

In addition, by effectively dehumidifying the moisture implanted in the internal structure of the freezer compartment as described above, there is an advantage in that moisture accumulated on the structure is reduced by freezing, thereby reducing the amount of frost in the freezer compartment.

In addition, as the amount of frost on the inside of the freezer compartment is reduced as described above, there is an advantage that the inside of the freezer compartment looks more clean when the freezer compartment door is opened.

In addition, as described above, since the amount of defrosting in the freezer compartment is reduced and the interior of the refrigerator is clean, the user of the product feels the satisfaction of the product, thereby increasing the reliability of the product. .

Claims (6)

A freezer compartment provided below the refrigerator; A freezer compartment door selectively shielding an internal space of the freezer compartment; An evaporator provided at the rear side of the freezing compartment; A cold air supply duct guiding the cold air generated by the evaporator to be supplied to the refrigerating chamber and the freezing chamber; A damper provided at one side of the cold air supply duct to selectively block cold air supplied to the refrigerating chamber; A defrost heater provided at one side of the evaporator to remove frost formed on the evaporator; And It is provided on one side of the cold air supply duct, and includes a reheat heater that is operated when opening and closing the freezer compartment door, The damper closes the flow path of the cold air supply duct for a set time immediately after the freezing chamber door is closed, and at the same time, the reheating heater operates for a set time to supply high temperature and low humidity air into the freezer compartment. Dehumidification system. The method of claim 1, wherein the damper, The reheat dehumidification system of the refrigerator, characterized in that the shield is closed at the time of operation of the reheater heater, and is opened at the time of normal supply of cold air. The method of claim 1, wherein the reheat heater, Reheating and dehumidifying system of the refrigerator, characterized in that mounted on the rear side of the cold air discharge port of the grill pan forming the rear wall of the freezer. Freezer, An evaporator provided at the rear side of the freezer compartment, Cooling fan provided on the upper side of the evaporator, Cold air duct to guide the cold air generated in the evaporator to the freezer, Has a configuration including a reheat heater provided on one side of the cold air duct, The reheat heater is a reheat dehumidification system of the refrigerator, characterized in that the operation for a predetermined time immediately after shielding the door shielding the freezer compartment by a timer. The method of claim 4, wherein the timer, Reheating and dehumidifying system of the refrigerator, characterized in that reset when the freezer door is opened. The method according to claim 1 or 4, The compressor for compressing the refrigerant is a reheat dehumidification system of the refrigerator, characterized in that stopped while the reheat heater is driven.

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