KR20000006564U - Refrigerator - Google Patents

Abstract

The present invention relates to a refrigerator, and an object thereof is to improve the cold air supply device and the internal wound of the refrigerating compartment to uniformly cool the refrigerating compartment and to facilitate the evaporator assembly.

The refrigerator according to the present invention is provided with a discharge duct 330 formed in multiple stages of the cold air discharge port 333 symmetrically around the evaporator 310 provided at the center of the rear wall of the refrigerating chamber 120, and the air suction port 343 is formed at the top end thereof. In addition, the suction duct 340 for guiding the refrigerating chamber 120 air to the lower part of the evaporator 310 was also formed symmetrically at both ends of the evaporator 310. Therefore, since the cold air distribution is uniformly formed throughout the refrigerating chamber 120, a temperature deviation does not occur according to the position, and since the air completely exchanged in the refrigerating chamber 120 is introduced into the evaporator 310 through the air inlet 343, the freezing is performed. The heat exchange efficiency of the cycle is improved.

In addition, the rear wall inner wall 121 of the refrigerating chamber 120 is formed with a locking projection 122 protruding to be fitted between the side end portions of the evaporator 310, so that the evaporator 310 is fixed by the locking projection 122 to separate. It can be easily assembled without the tools.

Description

Refrigerator

The present invention relates to a refrigerator, and more particularly, to a refrigerator compartment cold air supply device and an evaporator installation structure which sucks the refrigerator compartment air into a cold compartment and supplies it to the refrigerator compartment again.

The refrigerator is generally configured to supply the cold air generated from the evaporator of the refrigeration cycle to the freezer compartment and the refrigerating compartment to maintain the freshness of various foods for a long time, as shown in FIG. 1, in the cabinet 1 forming the outer body. A freezer compartment (2) for storing frozen foods and a refrigerating compartment (3) for storing refrigerated foods are partitioned by an intermediate partition (9). The freezer compartment (2) and the refrigerating compartment (3) are opened and closed. The doors 4 and 5 are hingedly coupled to the front surface of the cabinet 1.

In the rear of the freezing chamber 2, a separate cooling chamber 6 is formed to generate cold air and to supply the freezing chamber 2 and the refrigerating chamber 3. It includes a circulation fan 6b for introducing air from the evaporator 6a, the freezing chamber 2 and the refrigerating chamber 3 into the evaporator 6a and forcibly blowing the generated cold air. And freezing chamber duct 7 and refrigerating chamber duct 8 in which cold air outlet holes 7a and 8a are arranged to guide the cold air to the freezing chamber 2 and the refrigerating chamber 3 are set up on the rear side, Inside the partition 9, return ducts 9a and 9b are formed, which guide the air from the freezing chamber 2 and the refrigerating chamber 3, which are sucked by the circulation fan 6b, to the evaporator 6a.

In the freezing chamber 2 and the refrigerating chamber 3, shelves 2a and 3a are provided in the horizontal direction so as to accommodate and store food, respectively. Since the internal space is larger than the freezer compartment 1 in the refrigerating compartment 3, the shelf 3a is provided in multiple stages, and a separate vegetable box 3b for storing vegetables and the like containing moisture therein is provided.

When the circulating fan 6b is operated in the refrigerator configured as described above, air in the freezing compartment 2 and the refrigerating compartment 3 flows into the lower part of the evaporator 6a through the return duct 9, which passes through the evaporator 6a. The air is cooled and then forcedly blown into the freezing chamber 2 and the refrigerating chamber 3 through the freezing chamber duct 7 and the refrigerating chamber duct 8. Accordingly, the foods stored in the freezer compartment 2 and the refrigerating compartment 3 are stored in the frozen and refrigerated state, respectively.

However, in the conventional refrigerator, since the cold air is forcedly blown by one evaporator 6a and the circulation fan 6b provided at the rear of the freezer compartment 2, the cold air is not evenly supplied to the refrigerating compartment 3 having a relatively large internal volume. That is, the refrigerating chamber (3) is supplied with cold air through the refrigerating chamber duct (8) installed on the rear wall, there is a disadvantage that the forced blowing force of the circulation fan 6 is not uniformly supplied to the entire refrigerating chamber (3).

In order to solve this problem, recently, an independent cooling refrigerator has been proposed to maintain an optimal state for each food storage type by installing separate evaporators in a freezer compartment and a refrigerator compartment, and FIG. 2 schematically illustrates such a refrigerator structure. It is shown in cross section.

In the independent cooling refrigerators, cold air supply devices 30 and 40 are separately formed at the rear of the freezing compartment 10 and the rear of the refrigerating compartment 20, respectively. The freezer compartment 10 is provided with an evaporator 31 and a blower fan 32 in the cold air supply device 30 to suck the air from the freezer compartment 10 into the evaporator 31 and pass the cold air to the freezer compartment 10. Forced air again. The cold air supply device 40 of the refrigerating chamber 20 is formed on the upper side of the inner phase 22. Here, the evaporator 41 which generates cold air and the blower fan 42 which blows the cold air to the front side are also provided on the upper side of the evaporator 41. Installed in The evaporator 41 is firmly fixed to the upper side of the inner phase 22 of the refrigerating chamber 20 by forcibly coupling the refrigerant pipe 41a to the fixed clamp 23 provided in the rear wall inner image 22 of the refrigerating chamber 20. In addition, the evaporator cover 41b covering the front part of the evaporator 41 has a suction port 43 through which the refrigerating chamber 20 air is sucked and a discharge port 44 through which cold air is discharged, and the cold air is properly applied to the entire refrigerating chamber 20. The cold air distribution duct 45 in which the cold air discharge ports 46 are arranged up and down so as to guide the distribution is installed in the center of the rear wall of the inner wall 22. Inside the cold air distribution duct 45 is a rotary blade 47 is rotated by a separate motor.

When the blowing fan 32 and the rotary blade 47 of the refrigerating compartment 20 are rotated in the independent cooling refrigerator configured as described above, air in the refrigerating compartment 20 is introduced into the lower part of the evaporator 41 through the suction port 43. In addition, the cold air generated while passing is evenly supplied to the refrigerating chamber 20 through the discharge port 44 and the cold air distribution duct 45 by the forced blowing force of the blowing fan 32. That is, some of the cold air is discharged to the upper side of the refrigerating chamber 20 through the discharge port 44, and the cold air is uniformly discharged to the entire refrigerating chamber 20 through the cold air discharge port 46. In particular, by driving the rotary blade 47 built in the cold air distribution duct 45, evenly distributed cold air in every corner of the refrigerating chamber 20, rotates so as not to escape the cold air even if the door 21 is opened to intercept cold air The refrigerating chamber 20 temperature is kept constant.

However, these independent cooling refrigerators have the following problems. First, the cold air supply device 40 of the refrigerating chamber 20 is formed with the discharge port 44 and the suction port 43 adjacent to the front side of the evaporator 41, so that the discharge port immediately flows in the state where the discharged cold air is not heat-exchanged. There is a problem that the case is re-suction to 43 to reduce the heat exchange efficiency of the refrigeration cycle.

In addition, as a separate fixing clamp 23 for fixing the evaporator 41 is required, assemblability is deteriorated and manufacturing cost is increased, it is rotated on the rear wall of the refrigerating chamber 20 for the constant temperature cooling of the refrigerating chamber 20. Power consumption rate is also increased by driving the rotary blade 47 by installing a separate cold air distribution duct 45 with the blade 47 is built.

The present invention is to solve this problem, the main purpose of the present invention is to install a discharge duct formed in multiple stages of the cold air outlet symmetrically around the evaporator provided in the center of the rear wall of the refrigerating chamber, the air inlet is formed at the top of the refrigerating chamber air The suction duct guided to the lower part of the evaporator is also symmetrically formed at both ends of the evaporator, so that the cold air distribution is uniform throughout the refrigerating chamber so that no temperature deviation occurs, and the air completely exchanged in the refrigerating chamber is introduced into the evaporator through the air inlet to freeze. It is to provide a refrigerator to improve the heat exchange efficiency of the cycle.

And a second object of the present invention is to provide a refrigerator that can facilitate the evaporator assembly without a separate tool by forming a locking step on the inside of the rear wall of the refrigerating chamber to be inserted and coupled between the evaporator side ends.

1 is a side cross-sectional view schematically showing a conventional refrigerator.

Figure 2 is a side cross-sectional view showing the structure of another conventional refrigerator.

Figure 3 is a side cross-sectional view schematically showing the overall structure of the refrigerator according to the present invention.

Figure 4 schematically shows a refrigerator compartment cold air supply device of the refrigerator according to the present invention.

FIG. 5 is an enlarged cross-sectional view illustrating an A part shown in FIG. 4 and shows an evaporator mounting structure.

* Description of the symbols for the main parts of the drawings *

120. Refrigerator 121. Inner box 122. Jamming jaw

310. Evaporator 311. Heat exchange pins 312. Refrigerant pipe

330. Discharge duct 333 Cold discharge 340 Suction duct

The present invention for achieving the above object is in the refrigerator provided with a cold air supply unit with a built-in evaporator and a fan on the center to provide cold air to the refrigerating chamber provided on the rear wall surface of the inside of the refrigerating compartment, the compartment is divided into a freezer compartment and a refrigerating compartment. ,

The cold air supply unit extends upwardly along the side end of the evaporator, and an air inlet is formed at the upper end, and an intake duct for guiding air in the refrigerating chamber to the evaporator, the upper end communicating with the upper part of the evaporator, and the lower end extending symmetrically along both end parts of the evaporator. It is characterized in that it comprises a discharge duct formed in the multi-stage cold air discharge port for uniformly discharging the cold air generated in the evaporator, protruding on the inside of the refrigerating chamber is fitted to the evaporator side end coupled.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a side cross-sectional view showing the overall structure of the independent cooling refrigerator according to the present invention, Figures 4 and 5 is a schematic view showing a front view and an evaporator coupling structure schematically showing the structure of the refrigerator compartment of the present invention.

As the independent cooling refrigerator according to the present invention as shown in these, the freezer compartment 110 for storing the frozen food and the refrigerating chamber 120 for storing the refrigerated food is formed in the cabinet 100 forming the appearance, which is It is provided to be partitioned vertically by the intermediate partition 150. The cabinet 100 is made of a urethane foam liquid between the inner case 111 of the freezing chamber 110 and the inner case 121 of the refrigerating chamber 120 and the outer case 190 of the steel material, and the inner case 111, 121 and the outer case 190 made of a plastic material. It is made of a heat insulating wall 180 formed by injection. The freezer compartment 110 and the refrigerating compartment 120 are provided with a multi-stage shelf 160 in a horizontal direction so that food can be stored and stored, and the vegetable box 170 is provided in a lower side of the refrigerating compartment 120. Doors 130 and 140 are hinged to the front surface of the cabinet 100 to open and close the freezer compartment 110 and the refrigerating compartment 120.

And in the rear of the freezing chamber 110 and the refrigerating chamber 120, the cold air supply device (200,300) for generating and supplying the cold air is configured separately, the detailed structure thereof is as follows.

First, the freezer compartment cold air supply device 200 is installed on the rear wall of the freezer compartment 110, which includes a circulating fan 220 for forced air cooling provided in the upper center of the evaporator 210 and the upper side of the evaporator 210. It consists of a motor 230, an evaporator cover 240 covering them. The evaporator cover 240 has a cold air outlet 241 for discharging cold air into the freezing chamber 110 is formed in the upper portion, the air inlet 242 for guiding the air of the freezing chamber 110 to enter the lower portion of the evaporator 210 is provided. It is formed on the lower side.

The cold air supply device 300 for the refrigerating compartment is configured to uniformly discharge cold air over the refrigerating compartment 120 exclusively. For this purpose, a rectangular evaporator 310 is installed on the center of the rear wall of the inner box 121 of the refrigerating compartment 120. It is covered by a heat insulating material 351 and the evaporator cover 350. On both sides of the evaporator 310, discharge ducts 330 for guiding the generated cold air to the refrigerating chamber 120 and suction ducts 340 for guiding the air of the refrigerating chamber 120 to the evaporator 310 are provided symmetrically. In addition, a fan 320 which sucks air from the refrigerating chamber 120 into the evaporator 310 through the suction duct 340 at the upper center of the evaporator 310 and forcibly blows the generated cold air back into the refrigerating chamber 120 through the fan 320. And a motor 321 are provided.

The structure of the suction duct 340 and the discharge duct 330 for guiding the cold air circulation in detail will be described below.

First, the suction duct 340 has a lower end 342 communicating with a lower portion of the evaporator 310, and an upper end 341 of the suction duct symmetrically extends to the upper side of the rear wall of the refrigerating chamber 120, and a suction port for suctioning the refrigerating chamber air at the top end thereof. 343 is formed. Accordingly, the air that has completed the heat exchange operation and rises above the refrigerating chamber 120 is introduced into the lower portion of the evaporator 310 through the air suction port 343 and the suction duct 340 by the driving of the fan 320.

The discharge duct 330 has an upper end portion 331 communicating with an installation space of the fan 320 and the motor 321, that is, the upper portion of the evaporator 310, and the lower end portion thereof is bent downward along the side end portion of the evaporator 310. It is extended, the cold air outlet 333 of the multi-stage is provided to be spaced apart at regular intervals so that the cold air is evenly discharged throughout the refrigerating chamber (120). Accordingly, the discharge duct 330 and the suction duct 340 are symmetrically arranged in parallel on both side surfaces of the evaporator 310.

On the other hand, the locking jaw 122 is protruded to the inner wall 121 of the rear wall surface 121 of the refrigerating chamber 120 in which the evaporator 310 is installed, and the evaporator 310 is fixed without a separate tool. The detailed structure thereof is as follows.

First, the evaporator 310 is composed of a plurality of heat exchange fins 311 are arranged in parallel, the refrigerant pipe 312 bent to penetrate several times. In addition, the locking jaw 122 protrudes between the both ends of the evaporator 310 and the inner phase 121 of the refrigerating chamber 120 adjacent to each other so as to be fitted between the bending portions of the refrigerant pipe 312 which is exposed to the outside of the heat exchange fin 311 and is bent. Although provided to be, the locking step 122 is formed in multiple stages spaced apart a predetermined interval.

Therefore, after the evaporator 310 is temporarily assembled to the inner wall 121 of the rear wall of the refrigerating chamber 120 so that the locking jaw 122 is inserted between the bending portions of the refrigerant pipe 312, the heat insulating material 351 and the evaporator cover 350 are assembled. Covering the evaporator 310 is firmly fixed without a separate tool. In addition, the air flowing between the left and right side end portions of the evaporator 310 and the inner phase 121 is prevented from rising upward by the catching jaw 122, and most of the air passes around the heat exchange fins 311, thereby improving heat exchange efficiency. Is improved.

Next will be described the operation and the effects of the refrigerator according to the present invention configured as described above.

First, when the circulation fan 220 of the freezer compartment cold air supply device 200 rotates, the air in the freezer compartment 110 flows into the lower portion of the evaporator 210 through the air inlet 242, and passes through the evaporator 210. Changes to. Subsequently, the cold air is discharged to the freezing chamber 110 by the forced blowing force of the circulation fan 220 to freeze and store the stored food, and the air which has completed the heat exchange operation is introduced into the evaporator 210 through the air inlet 242 again. .

When the fan 320 of the refrigerating compartment cold air supply device 300 is rotated by the motor 321, the air located above the refrigerating compartment 120 is sucked into the suction duct 340 through the suction port 343. As it flows along, it is introduced into the lower portion of the evaporator 310. In addition, the introduced air changes into cold while passing through the evaporator 310 by the suction blowing force of the fan 320, which is forcibly blown toward the upper end 331 of the discharge duct 330. The cold air flows along the discharge duct 330 and is discharged to the refrigerating chamber 120 through the cold air discharge port 333.

In this case, as described above, the discharge duct 330 is symmetrically configured at both end portions of the evaporator 310, and since the cold air discharge ports 333 are arranged up and down to be spaced apart at a predetermined interval, the refrigerating chamber 120 is provided. The compartments are supplied to the inside and the shelf 160 to cool the food evenly.

In addition, the air that has completed the heat exchange in the refrigerating compartment 120 rises to the upper space of the refrigerating compartment 120 by a natural convection phenomenon, and the air flows back into the evaporator 310 through the suction port 343 and the suction duct 340 to be cooled. Is converted into a continuous cycle. On the other hand, since the engaging jaw 122 protruding from the internal chamber 121 of the refrigerating chamber 120 is fitted to both side ends of the evaporator 310, the gap between the evaporator 310 side end and the internal chamber 121 of the refrigerating chamber 120 is combined. The air flow is prevented and all the incoming air passes through the heat exchange fins 311. That is, most of the air introduced from the lower part of the evaporator 310 passes through the heat exchange fins 311 and becomes cold, thereby improving its heat exchange efficiency.

As a result, the cold air supply device 300 for a refrigerating compartment according to the present invention is evenly distributed and discharged cold air throughout the refrigerating compartment 120 through the cold air outlet 333 of the multi-stage, without causing a temperature deviation according to the location of the refrigerating compartment 120. The food stored therein is uniformly cooled, and since most of the air flowing back into the evaporator 310 passes through the heat exchange fins 311, the heat exchange efficiency of the refrigeration cycle is improved. In addition, the installation of the evaporator 310 is facilitated by the locking step 122 that is integrally provided in the inner box 121 of the refrigerating chamber 120, thereby improving assembly performance and reducing manufacturing cost.

As described above in detail, the refrigerator according to the present invention is provided with a discharge duct formed in multiple stages of the cold air discharge port symmetrically around the evaporator provided in the center of the rear wall of the refrigerating chamber, and the air inlet is formed at the top to guide the refrigerator room air to the lower part of the evaporator. The suction duct is also formed symmetrically on both ends of the evaporator. Therefore, since the distribution of cold air is uniformly made throughout the refrigerating chamber, temperature deviation does not occur, and heat exchange efficiency of the refrigeration cycle is improved.

In addition, the inside of the rear wall of the refrigerating chamber is formed with a locking projection protruding to be coupled between the evaporator side end portion, the evaporator is fixed by the locking jaw can be easily assembled without a separate tool.

Claims (2)

The cabinet 100 having the freezing compartment 110 and the refrigerating compartment 120 partitioned therein is provided on the rear wall surface of the inner box 121 of the refrigerating compartment 120, and the evaporator 310 is provided on the center to supply cold air to the refrigerating compartment 120. In the refrigerator with a cold air supply unit 300, the fan 320 is built in, The cold air supply device 300 extends upwardly along the side end of the evaporator 310, and an air inlet 343 is formed at an upper end 341 to guide the air of the refrigerating chamber 120 to the evaporator. The duct 340, the upper end 331 is in communication with the upper part of the evaporator 310 and the lower end 332 is symmetrically extended along the both ends of the evaporator 310 is configured to cool the cold air generated in the evaporator (310) A discharge duct 330 having multiple stages of cold air discharge holes 333 uniformly discharged to the 120 and protruding from the inner phase 121 of the refrigerating chamber 120 is fitted to the side end of the evaporator 310 to be coupled to the engaging jaw ( 122). The method of claim 1, The evaporator 310 includes a plurality of heat exchange fins 311 arranged in parallel, and a refrigerant pipe 312 bent to penetrate the heat exchange fins 311 several times. The catching jaw 122 is inserted into and coupled between the bending portions of the refrigerant pipe 312 which protrudes and bends outside of the heat exchange fin 311 so that both ends of the evaporator 310 and the inner chamber 121 of the refrigerating chamber 120 are formed. Refrigerator, characterized in that the air flowing through the guide to pass around the heat exchange fins (311).