KR100271584B1 - Refrigerator of semi-indirect refrigerating and fast frost removing - Google Patents

Abstract

PURPOSE: A refrigerator is provided to refrigerate a large space through forced convection of cold air and to defrost a refrigerator with external air. CONSTITUTION: A refrigerator(20) consists of: a cold air duct for flowing cold air, having an intake port(29a) at the lower portion and a discharge port(29b) at the upper portion of a refrigeration compartment; an inlet port(30) flowing external air in defrosting of the refrigeration compartment, communicated with outside to perform rapid defrosting and connected to the cold air duct; and a blower fan performing forced convection of air upward from the intake port of the cold air duct and flowing external air toward the intake port from the inlet port. In the refrigerator, cold air of an evaporator(23) flows through the blower fan and the cold air duct with force. Thereby, the cold air is supplied to a large space of the refrigeration compartment regularly.

Description

Semi-cold and rapid defrost refrigerator

The present invention relates to a semi-intercooling and rapid defrost refrigerator, and more particularly, in a direct-cooling refrigerator of a method in which an evaporator is installed in a freezer compartment or a refrigerating compartment, condensing cold air during refrigeration, and introducing rapid air during defrosting. It relates to a semi-intercooler and a rapid defrost refrigerator that can be defrosted into.

Typically, refrigerators are classified into direct cooling and intercooling according to the cooling method. First, direct cooling is a word that reduces direct cooling. Each cooler (evaporator) is installed in the freezer compartment and the refrigerating compartment, and the freezer compartment and the freezer compartment are cooled using natural convection.

On the other hand, intercooling means an indirect cooling method, in which a cooler is installed only in the freezer compartment and a cold air generated through heat exchange is forcedly supplied to the freezer compartment and the refrigerating compartment using a cooling fan. Such inter-cooling is currently being adopted in most refrigerators due to the increased capacity of household refrigerators.

Figure 1 is a side cross-sectional view schematically showing the termination of the refrigerating chamber of the conventional direct-cooling refrigerator.

In the conventional direct-cooling refrigerator, as shown in FIG. 1, the refrigerator compartment is opened and closed by the door 12 and cold air is supplied by the evaporator 13 installed at the rear side of the main body 11 constituting the refrigerator compartment. In the refrigerating chamber, when a plurality of shelves, for example, the storage shelf 14 is supported and installed on the inner bed bit 15 provided on the inner wall of the main body 11, various foods are stored and stored at a low temperature in the storage shelf 14. It is becoming. The refrigerating chamber may be provided with a fresh room 16 or a vegetable room 17 for storing meat or the like separately.

As described above, in the refrigerating chamber divided into the storage shelves 14, the fresh chamber 16, the vegetable chamber 17, and the like, conventionally, the cool air generated by the evaporator 13 is supplied to each point by natural convection. It became. This natural convection phenomenon describes the principle of atmospheric circulation, in which hot air goes up and cold air goes down. This cooler installed on the upper rear side of the refrigerating chamber, that is, the cold air from the evaporator 13 is lowered to cool the refrigerating compartment, and back up to circulate to keep the food cold.

On the other hand, frost is formed around the evaporator 13 as the refrigerator 10 operates, and as the frost is excessively implanted, the efficiency of the evaporator 13 is lowered and the refrigeration efficiency is lowered. In order to prevent such deterioration of the refrigeration efficiency, a defrost heater (not shown) is installed to remove frost formed on the evaporator 13 of the refrigerator 10.

In addition, the defrost heater is operated while the drive of the refrigerant circulation system such as a compressor (not shown) is stopped to remove frost formed around the evaporator 13. After that, when the defrost heater is stopped, a refrigerator that operates so that a refrigerant circulation system such as a compressor is operated again may be performed.

According to the configuration and operation of the conventional direct-cooling refrigerator as described above, as the refrigeration is carried out by the natural convection phenomenon during the refrigerating of the refrigerating chamber, the objects stored around the evaporator may be refrigerated quickly, but the storage accommodated somewhat apart from the evaporator Water causes a problem such as refrigeration relatively late, there is a problem that can not be cooled evenly over a large space, there is a problem that the defrosting time is long when the defrosting by the drive of the defrost heater is long, efficient defrosting is difficult.

Therefore, the present invention has been invented to solve the above-mentioned problems, by forcibly convection cold air in the direct-cooling refrigerator of the method in which the evaporator is installed in the freezer compartment or the refrigerating compartment to effectively refrigerate a large space, the freezer (room) It is an object of the present invention to provide a semi-intercooled and rapid defrost refrigerator so that defrosting can be performed at high speed by introducing extra air during defrosting.

1 is a side cross-sectional view schematically showing the termination of the refrigerating compartment of a conventional direct-cooling refrigerator.

2 is a side cross-sectional view schematically showing the termination of the refrigerating compartment of the semi-intercooling refrigerator according to an embodiment of the present invention.

* Explanation of symbols on main parts of the drawings

10, 20: refrigerator 11, 21: main body

12, 22: door 13, 23: evaporator

14, 24: storage shelf 15, 25: inner beads

16, 26: fresh room 17, 27: vegetable room

28: blower fan 29: cold air duct

29a: suction port 29b: discharge port

30: inlet port 30a: damper

A, B: driving direction of blower fan

Semi-cold and rapid defrost refrigerator according to the present invention for achieving the above object is a refrigerator provided with an evaporator in the rear of the refrigerator compartment, the storage space is partitioned into a plurality of storage shelves and the like; A cold air duct installed at a front surface of the evaporator to become a passage through which cold air flows up and down, a suction port is formed at a lower side of the refrigerating chamber, and a discharge port is formed at the upper side of the refrigerating chamber; An inlet that is opened during defrosting of the refrigerating compartment to allow external air to flow in, and to be opened at a predetermined portion of the refrigerating compartment to communicate with the cold air duct so that rapid defrosting is performed; And a blowing fan installed in the cold air duct and operating to suck air to the inlet side of the cold air duct and to force upward convection to the upper side when defrosting, and to introduce external air from the inlet to flow to the inlet side of the cold air duct. Characterized in that comprises a.

In addition, the blower fan is connected to the three-point switch, and the forward rotation is in contact with the drive of the compressor at the time of refrigeration of the refrigerator, the reverse rotation is applied when the power supply is applied when the defrost heater operating during defrosting, When the compressor and the defrost heater is stopped, the driving of the blower fan may be stopped.

In addition, a damper may be formed inside the inlet, and the damper is connected to the defrost heater operated during defrosting of the refrigerator, so that the inlet is opened at the same time as the defrost heater is operated, and the defrost heater is stopped. It can be configured to be sealed at the time.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a side cross-sectional view schematically showing the termination of the refrigerator compartment of the semi-intercooled and rapid defrost refrigerator according to an embodiment of the present invention.

The semi-cold and rapid defrost refrigerator of the present invention has a feature that a cold air supply device of a forced convection type and an inlet for introducing external air are installed in a conventional direct-cooling refrigerator. As shown in FIG. 2, the semi-intercooled and rapid defrost refrigerator is installed in a direct-cooling refrigerator 20 in which an evaporator 23 is installed at the rear side of the refrigerating chamber, and its storage space is partitioned by a plurality of storage shelves 24 and the like. In; It is configured to include a cold air duct 29, the inlet port 30 and the blowing fan (28).

The cold air duct 29 is a passage through which cold cold air generated in the evaporator 23 flows, and is installed in the front of the evaporator 23 in the rear side of the refrigerating chamber, and is formed to allow cold air to flow from the lower side to the upper side. To this end, a suction port 29a is formed at the bottom of the refrigerating compartment, and is a space partitioned by the respective storage shelves 24, the fresh chambers 26, and the vegetable chambers 27 supported by the inner box beads 25. The discharge port 29b is formed in the uppermost part of the refrigerating chamber.

The inlet 30 may be formed to be deformed at a predetermined portion of the refrigerating compartment and formed to be rapidly defrosted by inflow of external air during defrosting of the refrigerating compartment.

At this time, a damper (30a) interlocked with the defrost heater operating during the defrosting of the refrigerator is installed inside the inlet (30), the inlet (30) is sealed when refrigerated by the damper (30a), when defrosting It may be configured to be open.

The blower fan 28 is installed in the cold air duct 29, and in particular, the blower fan 28 is preferably installed near the discharge port 29b on the upper side.

In addition, the blower fan 28 is connected to the three-point switch, the power is applied to the forward rotation (A) at the same time as the operation of the compressor operated during the refrigeration of the refrigerator, the compressor is stopped, and the operation of the defrost heater At the same time, when the power supply is crossed and applied, reverse rotation (B), and when the compressor and the defrost heater is stopped, the blower fan 28 may be configured to be a direct current fan motor.

Accordingly, when the refrigerator 20 is refrigerated, the compressor is operated and the blowing fan 28 is forwardly rotated (A) while being applied to the power supply to the blowing fan 28. Therefore, the air in the refrigerating compartment may be forced into the cold air duct 29 by the operation of the blower fan 28 through the suction port 29a of the lower side.

In addition, the air introduced into the cold air duct 29 is cooled by cold air generated around the evaporator 23, and then the uppermost storage shelf where food and the like are stored through the discharge port 29b on the upper side. 24 may be supplied to the top.

In addition, the cold air supplied into the refrigerating chamber flows downward through the foods stored in the storage shelves 24 to cool the foods. Thereafter, the cold air reached to the bottom of the refrigerating chamber is introduced into the cold air duct 29 through the suction port 29a, and then circulates the above process.

On the other hand, when the refrigerating (chamber) chamber obtains the desired refrigerating (chapter) effect by driving the refrigerant circulation system as described above, frost is formed around the evaporator 23. At this time, when excessive frosting is detected around the evaporator 23, the operation of the refrigerant circulation system such as the compressor is stopped and the defrost heater is operated to dissolve the frost formed on the evaporator 23.

At this time, the inlet port 30 is opened by a damper 30a formed to be linked with the defrost heater while the defrost heater is operated, and the power is applied to the blower fan 28 at the same time as the defrost heater is operated. The blowing fan 28 is reversely rotated (B).

Accordingly, as the blower fan 28 is reversely rotated (B), relatively warm external air is introduced through the inlet port 30, and the external air introduced through the inlet port 30 passes through the cold air duct 29. It flows through the suction port 29a side. In this case, as the cold air duct 29 is installed on the front of the evaporator 23, relatively warm external air passes through the front of the evaporator 23, and frost formed around the defrost is rapidly defrosted.

When the defrost is completed by the operation of the defrost heater as described above, the operation of the defrost heater is completed, the damper (30a) is also returned to its original position, the inlet 30 is sealed, crosses the blower fan 28 Then, the applied power is turned off and the driving of the blower fan 28 is also stopped.

On the other hand, when the defrost is completed as described above, the refrigerant circulating system is operated again, the compressor is operated, the power is applied to the blower fan 28 as the compressor is operated and the forward rotation (A) as described above in the refrigerator compartment By forcibly circulating the refrigerant inside, a large space can be efficiently refrigerated.

As described above, according to the semi-intercooled and rapid defrost refrigerator according to the preferred embodiment of the present invention, unlike the direct-cooling refrigerator, which is dependent on the conventional natural convection method, the cold air generated from the evaporator 23 is blown fan 28 and cold air. By forced convection through the duct 29 can be uniformly supplied to a large space of the refrigerator compartment. That is, cold cold air flows into the refrigerating chamber from the discharge port 29b installed above the cold air duct 29, and the cold air continues to flow between the plurality of storage spaces partitioned by the respective storage shelves 24. While flowing down.

The cold air flowing down to the lower portion is forcibly lowered by the suction force of the blower fan 28, so that the cold air flows smoothly without stagnation between foods stored in each storage shelf 24, and as a result, the corner of the refrigerator compartment. It has the advantage of being able to supply cold air evenly to the corners.

In addition, when defrosting the refrigerating chamber, the inlet 30 is opened, and the power supply is applied to the blower fan 28 so that the blower fan 28 is reversely rotated (B) and thus flows in through the inlet hole 30. Relatively warm external air flows into the inlet port 29a, whereby frost formed around the evaporator 23 can be defrosted rapidly.

According to the configuration and operation of the semi-intercooled and rapid defrost refrigerator according to the embodiment of the present invention described above, by convection the cold air in the direct-cooling refrigerator by cooling the wide space evenly, the cooling efficiency is maximized, the outside of the refrigerator when defrosting There is an effect such that defrost is made at high speed by introducing air.

One embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and the present invention is not limited to the scope of the present invention provided in the following claims. It will be readily apparent to one of ordinary skill in the art that various modifications and variations can be made.

Claims (3)

In the refrigerator 20 in which the evaporator 23 is installed on the rear side of the refrigerating chamber and the storage space is divided into a plurality of storage shelves 24, etc .: A passage in which cold air flows up and down by being installed in front of the evaporator 23. A cold air duct 29 in which a suction port 29a is formed at the lower side of the refrigerating chamber, and a discharge port 29b is formed at the upper side of the refrigerating chamber; An inlet 30 which is opened during defrosting of the refrigerating compartment and opens with outside air at a predetermined portion of the refrigerating compartment so as to allow rapid defrosting, and communicates with the cold air duct; And installed in the cold air duct 29 and forcibly convection air to the upper side of the inlet port 29a of the cold air duct 29 when refrigerated, and inflowing external air from the inlet port 30 when defrosting the cold air. Semi-intercooled and rapid defrost refrigerator comprising a blower fan (28) which operates to flow to the inlet (29a) side of the duct (29). The blower fan 28 is connected to a three-point switch, the contact of the compressor at the time of refrigeration of the refrigerator 20 is in contact with the forward rotation (A), the operation of the defrost heater operating during defrosting When the power supply is crossed and applied, the reverse rotation (B), the driving of the blower fan 28 is stopped when the compressor and the defrost heater is stopped, semi-intercooled and rapid defrost refrigerator. The method of claim 1, wherein the damper (30a) may be formed inside the inlet 30, wherein the damper (30a) is connected in conjunction with the defrost heater operating during the defrosting of the refrigerator 20 Semi-intercooling and rapid defrost refrigerator, characterized in that the inlet 30 is open at the same time as the operation of the defrost heater is configured to be sealed when the defrost heater is stopped.

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