KR101090061B1 - Refrigerator - Google Patents

Abstract

The present invention includes a main body cabinet having an outer wound to form an outer appearance and an inner wound formed with a freezing compartment and a refrigerating compartment at intervals filled with a foam material inside the outer wound; A freezer evaporator and a cold room evaporator; A refrigerator having a freezing compartment fan and a refrigerating compartment fan for blowing cold air generated by the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively, and forming a cold air flow path between the refrigerating compartment evaporator and the refrigerating compartment, A refrigeration chamber duct having at least one suction port formed above the refrigerator compartment evaporator and a discharge port formed above the refrigerator compartment evaporator; And a ventilation duct provided in communication with the refrigerating chamber duct and a lower region of the refrigerating chamber, wherein the cold air in the refrigerating chamber is turned into the refrigerating chamber evaporator through the suction port and the ventilation duct when the refrigerating chamber fan is on. When the refrigerator compartment fan is off, cold air generated in the refrigerator compartment evaporator is discharged to the refrigerator compartment through the ventilation duct. As a result, the inside of the refrigerating compartment may have a smooth flow of cold air, thereby improving cooling performance. In addition, it is possible to prevent overcooling or freezing of the surrounding area of the refrigerator compartment evaporator. In addition, during the refrigerator operation cycle, the temperature of the lower part of the refrigerator may be controlled by periodically inhaling and discharging cold air in the lower part of the refrigerator compartment. In addition, it is possible to efficiently cool a relatively high temperature portion of the refrigerating compartment lower region.

Description

Refrigerator {REFRIGERATOR}

1 is a cross-sectional view showing the cold air flow of the refrigerating compartment during operation of the refrigerating compartment during the cooling cycle stage in the conventional refrigerator,

2 is a cross-sectional view showing a freezer compartment of a refrigerator according to the present invention;

3 is a cross-sectional view showing the cold air flow of the refrigerator compartment when the refrigerator compartment operation, that is, the refrigerator compartment fan is on during the cooling cycle stage in the refrigerator according to the present invention,

Figure 4 is an enlarged view showing the cold air flow on the refrigerator compartment evaporator side of Figure 3,

5 is an enlarged view showing the flow of cold air in the refrigerator compartment evaporator when the freezer compartment operation and the refrigerating compartment operation stop, that is, the freezer compartment fan is on and the refrigerator compartment fan is off during the cooling cycle stage according to the present invention. ego,

6 is a front view illustrating a ventilation duct in the refrigerator according to the present invention;

7 is a perspective view showing a ventilation duct in the refrigerator according to the present invention.

Explanation of symbols on the main parts of the drawings

1: refrigerator 10: main cabinet

11: Trauma 12: Foam

13: Inner box 16: Freezer

17: refrigerator compartment 31: freezer chamber evaporator

32: freezer compartment 41: refrigerator compartment evaporator

42: refrigerator compartment fan 45: refrigerator compartment duct

51, 52: vegetable box 60: ventilation duct

61 duct main body 61a inclined portion

62, 63, 64: cold air separator 71: drain tray

The present invention relates to a refrigerator, and more particularly, to a refrigerator capable of smoothly cooling the inside of a refrigerating chamber as a whole and preventing overcooling or freezing of a region surrounding the refrigerating chamber evaporator.

In general, a refrigerator is a device capable of maintaining fresh food stored for a long time by supplying cold air provided through a cooling cycle to a storage compartment and lowering the inside thereof. Recently, in order to efficiently cool the freezer compartment and the refrigerating compartment, an independent cooling type refrigerator having an evaporator installed in each of the freezer compartment and the refrigerating compartment has been released.

Independent cooling refrigerators are provided with a separate cold air supply device behind the freezing compartment and the refrigerating compartment. The cold air supply device includes an evaporator and a blower fan to circulate the inside of the freezer compartment and the refrigerating compartment to inhale and heat the cold air having a high temperature to the evaporator, and to heat the cold air lowered by the heat exchanger to the freezer compartment and the refrigerating compartment. It has a structure for forced air blowing.

1 is a cross-sectional view showing a refrigerating compartment in a conventional independent cooling refrigerator. The conventional refrigerator 101 includes a main cabinet 110 having a freezer compartment (not shown) and a refrigerating chamber 117 formed at each front opening, and a freezer compartment installed at the main cabinet 110 to open and close each front opening (not shown). A refrigerator (not shown) and a refrigerator compartment door 140, a freezer compartment cold air supply unit mounted at a rear region of the freezer compartment to supply cold air to the freezer compartment, and a rear compartment of the refrigerator compartment 117 to supply cold air to the refrigerator compartment 117. Refrigerating chamber cold air supply unit (141, 142).

The main body cabinet 110 has an outer box 111 forming an outer appearance and an inner box 113 in which a freezer compartment and a refrigerating compartment 117 in which food is stored are spaced apart from each other at a filling interval of the foam member 112 inside the outer box 111. ). In the lower rear region of the main cabinet 110, a machine room equipped with a compressor (not shown) for compressing low-temperature low-pressure gas phase refrigerant into high-temperature high-pressure gas phase refrigerant, and a condenser (not shown) for condensing the refrigerant supplied from the compressor with liquid phase refrigerant. 114 is provided. Thus, the refrigerant condensed from the condenser is supplied to the refrigerator compartment evaporator 141 and the freezer compartment evaporator which will be described later, and the refrigerator compartment evaporator 141 and the freezer compartment evaporator absorb the latent heat of the surroundings to cool the surrounding air.

A plurality of shelves 117a, 117b, 117c, and 117d for supporting food or storage containers are mounted in an upper region of the refrigerating chamber 117, and a fruit or vegetable is provided in the lower regions of the shelves 117a, 117b, 117c, and 117d. Vegetable boxes (151, 152) for storing the are provided. In addition, between the shelves 117a, 117b, 117c, and 117d and the vegetable boxes 151 and 152, an isolation cooling chamber 150 that is cooled separately from the refrigerating chamber 117 is provided.

The refrigerator compartment refrigerator supply unit includes a refrigerator compartment evaporator 141 provided in a rear region of the refrigerator compartment 117 to form cold air, and a refrigerator compartment fan 142 for forcibly blowing the cold air formed from the refrigerator compartment evaporator 141 to the refrigerator compartment 117. Is done. At this time, the refrigerator compartment evaporator 141 is connected in series with the freezer compartment evaporator. Accordingly, the refrigerant supplied from the compressor and the condenser forms a closed circuit passing through the refrigerator compartment evaporator 141 to the freezer compartment evaporator and then returning back to the compressor.

A cold air flow path is formed between the refrigerator compartment evaporator 141 and the refrigerator compartment 117 in front of the refrigerator compartment refrigerator supply units 141 and 142, and the cold air outlets 147a and 147b through which cold air is discharged from the refrigerator compartment evaporator 141 to the refrigerator compartment 117. 147c and 147d and the refrigerating chamber duct 145 in which the cold air suction opening 146 for suctioning the cold air which circulated in the refrigerating chamber 117 to the refrigerating chamber evaporator 141 are attached. At this time, the cold air discharge ports 147a, 147b, 147c, and 147d and the cold air suction ports 146 are located above the vegetable boxes 151 and 152.

By this configuration, the cold air formed in the refrigerating chamber evaporator 141 is discharged from the cold air discharge ports 147a, 147b, 147c, and 147d, then circulates through the refrigerating chamber 117, and is cooled by being sucked into the cold air suction port 146 again.

However, in the conventional refrigerator 101, since the cold air outlets 147a, 147b, 147c, and 147d and the cold air intake port 146 are located above the vegetable boxes 151 and 152, the cold air circulation is the vegetable boxes 151 and 152. Mainly at the top of the Therefore, the cold air discharged into the refrigerating chamber 117 by the refrigerating chamber fan 142 is not transmitted to the vegetable box, especially the lower vegetable box 152, so that the temperature of the lower vegetable box 152 is relatively higher than the shelves 117a, 117b, 117c, 117d) shows higher distribution. Thus, there is a problem that the freshness of the food accommodated in the lower vegetable box 152 is lowered.

In particular, since the refrigerator compartment evaporator 141 and the freezer compartment evaporator are connected to each other in series, when the temperature of the refrigerator compartment 117 is satisfied and the refrigerator compartment fan 142 is stopped and the freezer compartment fan is operating, the refrigerant is a refrigerator compartment evaporator for operation of the freezer compartment. Through 141) to the freezer evaporator. Therefore, since cold air is continuously generated on the refrigerating chamber evaporator 141 and the cold air stays, there is a problem in that the surrounding area of the refrigerating chamber evaporator 141 is supercooled and the food accommodated in the refrigerating chamber 117 lower region is frozen or parts are frozen.

Accordingly, an object of the present invention is to provide a refrigerator in which the inside of the refrigerating chamber is smoothly flowed as a whole to improve cooling performance.

In addition, another object of the present invention is to provide a refrigerator capable of preventing overcooling or freezing of the surrounding area of the refrigerator compartment evaporator.

Another object of the present invention is to provide a refrigerator capable of controlling the temperature of the lower part of the refrigerator by periodically inhaling / discharging cold air in the lower part of the refrigerator compartment during a refrigerator operation cycle.

In addition, another object of the present invention is to provide a refrigerator capable of efficiently cooling a relatively hot portion of the lower part of the refrigerating compartment.

The object is, according to the present invention, a main body cabinet having an outer wound to form an outer appearance and an inner wound formed with a freezer compartment and a refrigerating compartment at intervals filled with a foam material inside the outer wound; A freezer evaporator and a cold room evaporator; A refrigerator having a freezing compartment fan and a refrigerating compartment fan for blowing cold air generated in the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively, wherein a cold air flow path is formed between the refrigerating compartment evaporator and the refrigerating compartment, A refrigeration chamber duct having at least one suction port formed above the refrigerator compartment evaporator and a discharge port formed above the refrigerator compartment evaporator; And a ventilation duct provided in communication with the refrigerating chamber duct and a lower region of the refrigerating chamber, wherein the cold air in the refrigerating chamber is turned into the refrigerating chamber evaporator through the suction port and the ventilation duct when the refrigerating chamber fan is on. When the refrigerator compartment fan is turned off, the cool air generated in the refrigerator compartment evaporator is discharged to the refrigerator compartment through the ventilation duct.

The vent duct is preferably installed in the foam of the refrigerating compartment.

The ventilation duct preferably includes a duct body and a plurality of cold air separation plates extending in the longitudinal direction of the duct body to separate cold air.

The inner phase has a first through-hole and a second through-hole communicating with the refrigerating chamber duct and the refrigerating compartment lower region, respectively, wherein the duct body extends from the upper end and the upper end corresponding to the first through-hole; It is preferable to include an inclined portion inclined toward the lower region of the refrigerating compartment, and a lower end connected to the inclined portion and correspondingly coupled to the second through hole.

A drain tray is mounted below the refrigerating chamber evaporator, and an upper end of the vent duct is inclined at an angle toward the drain tray.

In the main body cabinet, the freezing compartment and the refrigerating compartment are divided left and right by a partition wall, and the ventilation duct is provided at a lower side of the opposite side of the partition wall.

The freezer compartment evaporator and the refrigerator compartment evaporator may be connected in series.

An evaporator separating partition is provided between the refrigerating chamber duct and the refrigerating chamber evaporator so that the suction port and the lower part of the refrigerating chamber evaporator communicate with each other. During operation of the refrigerating chamber, the cold air introduced through the suction port is connected with the cold air introduced through the ventilation duct. It is preferable to heat exchange in the refrigerator compartment evaporator.

Preferably, the first through hole is provided at a lower portion of the refrigerating chamber evaporator on the side of the refrigerating chamber side wall facing the partition wall, and the duct body extends from the first through hole to be curved toward the partition wall side.

It is preferable that a water tank is disposed in front of the refrigerator compartment evaporator.

The interval between the side of the inclined portion facing the partition and the adjacent cold air separation plate at the upper end of the duct body is formed narrower than the distance between the side of the inclined portion in the position facing the partition and the adjacent cold air separation plate It is desirable to have.

In addition, the object is a main cabinet having an outer wound to form an outer appearance, and an inner wound formed in the freezer compartment and the refrigerating compartment at intervals of filling the foam material inside the outer trauma; A freezer evaporator and a cold room evaporator; A refrigerator having a freezing compartment fan and a refrigerating compartment fan for blowing cold air generated in the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively, wherein a cold air flow path is formed between the refrigerating compartment evaporator and the refrigerating compartment, A refrigerating chamber duct having a suction port through which cold air flows into the refrigerating chamber evaporator, and a discharge port formed at an upper side of the refrigerating chamber evaporator; Ventilation duct installed in the foam material and communicating with the refrigerating chamber duct and the lower region of the refrigerating chamber to enter and exit the cold air, and having at least one cold air separation plate extending in the longitudinal direction of the duct body and the duct body to separate the cold air. The ventilation duct is also achieved by the refrigerator, characterized in that for inhaling cold air toward the refrigerating chamber evaporator during operation of the refrigerating compartment, and discharging cold air from the refrigerating compartment evaporator when the refrigerating compartment is stopped.

It is preferable that the first through hole and the second through hole communicating the refrigerating chamber duct and the lower region of the refrigerating chamber, respectively, are formed in the inner phase.

The duct body includes an upper end corresponding to the first through hole, an inclined portion extending from the upper end and inclined toward the lower region of the refrigerating chamber, and a lower end connected to the inclined portion and corresponding to the second through hole. Preferably, the first through-hole communicating with the upper end is provided on the side opposite side of the partition wall of the refrigerating compartment, and the inclined portion extends inclined from the first through-hole to the partition wall side.
The interval between the side of the inclined portion facing the partition and the adjacent cold air separation plate at the upper end of the duct body is formed narrower than the distance between the side of the inclined portion at the position opposite to the partition and the adjacent cold air separation plate. It is preferable.

In addition, in order to achieve the above object, the present invention, the main body cabinet having an outer wound to form an outer appearance, and an inner wound formed with a freezer compartment and a refrigerating compartment at intervals of filling the foam material inside the outer trauma; A freezer evaporator and a cold room evaporator; A refrigerator having a freezing compartment fan and a refrigerating compartment fan which respectively blows cold air generated by the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, comprising: a partition partitioning the refrigerator compartment and the freezer compartment; A refrigerating chamber duct forming a cold air flow path between the refrigerating chamber evaporator and the refrigerating chamber, wherein at least one suction port through which cold air is introduced from the refrigerating chamber, and a discharge port formed at an upper side of the refrigerating chamber evaporator; And a ventilation duct installed in the foam material and communicating with the refrigerating chamber duct and the lower region of the refrigerating chamber to enter and exit the cold room, and to be deflected toward the opposite side of the partition wall, wherein the refrigerating chamber fan is off and the freezing chamber fan is When on (on), the cold air generated in the refrigerator compartment evaporator provides a refrigerator, characterized in that outflow to the refrigerator compartment through the ventilation duct.

It is preferable that an evaporator separating partition is provided between the refrigerating chamber duct and the refrigerating chamber evaporator so that the cold air sucked from the suction port flows below the refrigerating chamber evaporator so that the cold air sucked from the suction duct is heat-exchanged with the refrigerating chamber evaporator.

The ventilation duct includes: a duct body having one end coupled to an inner side of a lower side of the refrigerator compartment evaporator and the other end coupled to an inner side of a lower region of the refrigerator compartment; It is preferable to include at least one cold air separation plate formed in the longitudinal direction in the duct body to separate the cold air.

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

As shown in Figures 2 and 3, the refrigerator 1 according to the present invention is installed in the main cabinet 10 and the main cabinet 10 having a freezer compartment 16 and the refrigerating chamber 17 each front opening is formed. And a freezer compartment door 30 and a refrigerating compartment door 40 to open and close each front opening (not shown), and a freezer compartment cold air supply unit 31 and 32 mounted to a rear region of the freezer compartment 16 to supply cold air to the freezer compartment 16. And a refrigerating chamber cold air supply unit (41, 42) which is mounted in the rear region of the refrigerating chamber (17) and supplies cold air to the refrigerating chamber (17).

The main cabinet 10 is divided into left and right sides of the outer box 11 forming the appearance, and the freezer compartment 16 and the refrigerating compartment 17 in which food is stored at intervals of filling the foam 12 inside the outer box 11. And an internal wound 13. In the lower rear region of the main cabinet 10, a compressor 15 for compressing the low-temperature low-pressure gas phase refrigerant into a high-temperature high-pressure gas phase refrigerant, and a condenser (not shown) for condensing the refrigerant supplied from the compressor 15 into the liquid refrigerant The installed machine room 14 is provided. Thus, the refrigerant condensed from the condenser is supplied to the refrigerator compartment evaporator 41 and the freezer compartment evaporator 31 which will be described later, and each of the evaporators 41 and 31 absorbs the latent heat of the surroundings to cool the surrounding air.

An ice maker 20 is provided in the freezer compartment 16, and the ice generated by the ice maker 20 is taken out by a dispenser 35 provided on the front surface of the freezer compartment 30. Therefore, the user can easily be supplied with ice from the outside without opening the freezer door 30.

The freezer compartment cold air supply unit includes a freezer compartment evaporator 31 provided in the rear region of the freezer compartment 16 to form cold air and a freezer compartment fan 32 for forcibly blowing cold air formed from the freezer compartment evaporator 31 to the freezer compartment 16. .

In front of the freezer compartment cold air supply units 31 and 32, a discharge port (not shown) in which cold air is discharged from the freezer compartment evaporator 31 to the freezer compartment 16 and cold air circulated through the freezer compartment 16 are sucked into the freezer compartment evaporator 31. A freezing chamber duct 34 having a suction port (not shown) is mounted.

A plurality of shelves 17a, 17b, 17c, and 17d for supporting food or storage containers are mounted in an upper region of the refrigerating chamber 17, and a fruit or vegetable is provided in the lower regions of the shelves 17a, 17b, 17c, and 17d. Vegetable boxes (51, 52) for storing the are provided. An isolation cooling chamber 50 that is independently cooled is provided between the shelves 17a, 17b, 17c, and 17d and the vegetable boxes 51 and 52. Here, the refrigerating chamber duct 45 is preferably formed with a discharge port (not shown) through which cold air can be discharged to the isolation cooling chamber 50.

Vegetable box is composed of the upper vegetable box 51 and the lower vegetable box 52, the rear region of the upper vegetable box 51 is equipped with a refrigerator compartment evaporator 41 to be described later. The water tank 35a for the dispenser 35 is provided between the refrigerator compartment evaporator 41 and the upper vegetable box 51.

The refrigerating chamber cold air supply unit includes a refrigerating chamber evaporator 41 provided in the rear region of the refrigerating chamber 17 to form cold air, and a refrigerating chamber fan 42 for forcibly blowing the cool air formed from the refrigerating chamber evaporator 41 to the refrigerating chamber 17. . At this time, the refrigerator compartment evaporator 41 is connected in series with the freezer compartment evaporator 31. Thus, the refrigerant supplied from the compressor 15 and the condenser forms a closed circuit passing through the refrigerator compartment evaporator 41 and into the freezer compartment evaporator 31 and then returning back to the compressor 15. Here, the refrigerant supplied from the compressor 15 and the condenser may flow back into the refrigerator compartment evaporator 41 after passing through the freezer compartment evaporator 31 and then return back to the compressor 15.

The refrigerating chamber fan 42 is attached to the upper side of the refrigerating chamber evaporator 41, and the drain tray 71 for receiving the defrost water is attached to the lower side of the refrigerating chamber evaporator 41.

The drain tray 71 is connected to the machine room 14, and the defrost water received in the drain tray 70 flows out into the machine room 14 and evaporates.

Cold air flow paths between the refrigerator compartment evaporator 41 and the refrigerator compartment 17 are formed in front of the refrigerator compartment air supply units 41 and 42, and discharge ports 47a, 47b, and 47c through which cold air is discharged from the refrigerator compartment evaporator 41 to the refrigerator compartment 17. 47d) and a refrigerating chamber duct 45 having a suction port 46 for suctioning the cold air circulated through the refrigerating chamber 17 into the refrigerating chamber evaporator 41. At this time, the suction port 46 is disposed between the upper side of the refrigerator compartment evaporator 41 and the lower side of the lowermost discharge port 47d.

The evaporator is separated between the refrigerating chamber duct 45 and the refrigerating chamber evaporator 41 by guiding the cold air sucked from the suction port 46 to the lower side of the refrigerating chamber evaporator 41 to secure an area where the cold air can exchange heat with the refrigerating chamber evaporator 41. The partition 48 is provided.

A plurality of discharge ports 47a, 47b, 47c, 47d are provided on the front surface of the refrigerating duct 45 so as to face each shelf 17a, 17b, 17c, 17d, and each shelf 17a, 17b, 17c, 17d. The freshness of the food placed in it can be efficiently maintained.

The suction port 46 is provided to face the isolation cooling chamber 50 under the discharge ports 47a, 47b, 47c, 47d. Thus, the cold air formed in the refrigerating chamber evaporator 41 is discharged from the discharge ports 47a, 47b, 47c, and 47d, circulates through the refrigerating chamber 17, and is sucked into the suction port 46 and cooled again. Here, the ventilation duct 60 is installed in the foam material so as to communicate with the lower region of the refrigerating chamber 17 and the refrigerating chamber duct 45. Accordingly, when the refrigerating compartment 17 is operating, that is, when the refrigerating compartment fan 42 is on, air in the refrigerating compartment 17 is sucked into the refrigerating chamber evaporator 41 through the inlet port 46 and the ventilation duct 60. After cooling by the refrigerating chamber evaporator 41, it is discharged to the refrigerating chamber 17 through the discharge ports 47a, 47b, 47c, 47d. Therefore, the cold air discharged to the discharge ports 47a, 47b, 47c, and 47d can flow smoothly to the middle and lower regions of the refrigerating chamber 17 (see FIG. 4). At this time, if there is no ventilation duct 60, the cold air discharged into the refrigerating chamber 17 by the refrigerating chamber fan 42 is not properly delivered to the lower region of the refrigerating chamber 17, that is, the vegetable boxes 51 and 52, so that the vegetable box ( The temperatures of 51 and 52 are relatively higher than those of the shelves 17a, 17b, 17c, and 17d. In addition, since the lower vegetable box 52 is located at a position adjacent to the machine room 14 and is provided below the refrigerator compartment evaporator 41, it is difficult to maintain freshness of vegetables or fruits because the temperature is higher than that of the upper vegetable box 51. . Therefore, a cold air flow is formed to the vegetable box, in particular the lower vegetable box 52, the ventilation duct 60 is required to maintain the freshness of the lower vegetable box (52).

Ventilation duct 60 is provided on the lower side of the refrigerator compartment evaporator 41, the upper end 61b is coupled to the inner side of the lower side of the refrigerator compartment evaporator 41, and the lower end 61c is coupled to the inner side of the lower vegetable box 52. (See Figure 6). At this time, the first through hole and the second through hole (13a, 13b) are formed in the inner image of the lower side of the refrigerator compartment evaporator 41 and the inner side of the lower vegetable box (52), respectively. Accordingly, when the refrigerating compartment 17 is operated, that is, when the refrigerating compartment fan 42 is on, the air in the refrigerating compartment 17 is moved along the vent duct 60 through the second through hole 13b to allow the first passage. It may be introduced into the refrigerator compartment evaporator 41 through the sphere 13a (see FIG. 4).

In addition, when the temperature of the refrigerating compartment 17 is satisfied and the refrigerating compartment fan 42 is off and the freezing compartment fan 32 is on, the refrigerant is supplied through the refrigerating compartment evaporator 41 to operate the freezer compartment 16. It flows to the freezer compartment evaporator (31). Here, when there is no ventilation duct 60, the cold air generated in the refrigerator compartment evaporator 41 is not discharged to the refrigerator compartment 17 through the discharge ports 47a, 47b, 47c, 47d formed on the upper side of the refrigerator compartment evaporator 41. The cooling is continued on the evaporator 41 side and stagnated in the lower part of the refrigerator compartment evaporator 41. Therefore, there may be a problem that the upper vegetable box 51 provided in front of the refrigerator compartment evaporator 41 is supercooled or the water tank 35a freezes. Therefore, the ventilation duct 60 which guides the cold air of the refrigerator compartment evaporator 41 side to the lower region of the refrigerator compartment 17 without staying under the refrigerator compartment evaporator 41 (refer FIG. 5). Therefore, during the predetermined operation step, the cold air on the refrigerator compartment evaporator 41 side is supplied to the lower side of the refrigerator compartment 17, thereby preventing overcooling of the upper vegetable box 51 and freezing of the water tank 35a.

Here, the ventilation duct 60 is preferably provided in the lower right region of the refrigerating chamber 17, as shown in FIG. The reason is that the lower left region of the refrigerating chamber 17 maintains a low temperature due to the cold air effect of the freezing chamber 16, but the right region is relatively hotter than the left region due to the influence of outside air. In other words, the portion of the refrigerator compartment facing the partition 18 partitioning the refrigerator compartment and the freezer compartment becomes a relatively high temperature state.

As shown in FIG. 7, the ventilation duct 60 is installed in the rear foam member 12 of the lower vegetable box 52, and is formed in the duct main body 61 and the duct main body 61 in the longitudinal direction to cool the air. And a plurality of cold air separation plates 62, 63, and 64 for separating.

The duct body 61 has an upper end portion 61b corresponding to the first through hole 13a so as to communicate with the refrigerator compartment evaporator 41, an inclined portion 61a inclined downward from the upper end portion 61b, and an inclined portion. It is connected to (61a) and comprises a lower end portion (61c) correspondingly coupled with the second through-hole (13b) to communicate with the lower vegetable box 52 located adjacent to the bottom of the refrigerating chamber (17). Thus, the cold air generated from the refrigerator compartment evaporator 41 flows into the upper end portion 61b, flows through the inclined portion 61a, and is discharged to the lower vegetable box 52 through the lower portion 61c. At this time, the cold air can easily flow to the lower vegetable box 52 by the inclined portion 61a of the duct body 61.

The first through hole (13a) is disposed in the lower right region of the refrigerator compartment evaporator (41), the inclined portion (61a) is the cold air introduced into the duct body 61 from the refrigerator compartment evaporator (41) at once in the refrigerator compartment (17) In order to prevent the outflow to the first through port 13a is formed in a curved toward the partition 18. In addition, due to the flow of cold air, the cold air separation plate (62, 63, 64) to prevent the phenomenon that most of the cold air flows along the side of the inclined portion (61a) toward the partition wall 18 to concentrate in a specific portion Install. In order to appropriately adjust the amount of cold air flowing to the side of the inclined portion 61a facing the partition 18, the side of the inclined portion 61a facing the partition and the cold air separating plate adjacent thereto at the upper end 61b of the duct body 61. The interval between the 62 is formed to be narrower than the interval between the side surface of the inclined portion 61a at the position opposite to the partition wall 18 and the cold air separation plate 61 adjacent thereto.

Therefore, the cold air separators 62, 63, and 64 can separate the cold air introduced from the upper end portion 61b of the duct body 61 and evenly discharge the cold air. Thus, the cold air is prevented from being concentrated only on one side of the lower vegetable box 52, so that the freshness of the vegetables or fruits can be more efficiently maintained.

The upper end 61b of the duct body 61 is preferably provided to be inclined at a predetermined angle toward the drain tray 71. Thus, defrost water by the refrigerator compartment evaporator 41 can be prevented from flowing into the ventilation duct 60.

4 and 5, the cold air flow of the refrigerating chamber 17 will be briefly described as follows.

First, when the operation of the refrigerating compartment 17, that is, the compressor 15 driving and the refrigerating compartment fan 42 is on (on), as shown in FIG. It is sucked through the two through holes (13b) is introduced into the first through holes (13a) along the vent duct (60) and cooled by the refrigerator compartment evaporator (41). The cold air generated by the refrigerating chamber evaporator 41 is discharged to the refrigerating chamber 17 through each of the discharge ports 47a, 47b, 47c, and 47d formed in the refrigerating chamber duct 45. Therefore, since the air in the refrigerating chamber 17 flows smoothly to the middle and lower regions of the refrigerating chamber 17, the cooling performance can be improved.

In addition, when the set temperature inside the refrigerating compartment 17 is satisfied and the refrigerating compartment fan 42 is off and the freezing compartment fan 32 is on, the refrigerant is a refrigerating compartment evaporator 41 for the operation of the freezer compartment 16. Through the freezer compartment evaporator 31 is introduced. At this time, the cold air continuously cooled in the refrigerating chamber evaporator 41 flows out through the first through hole 13a by its own weight, as shown in FIG. 5, along the second through hole 13b along the vent duct 60. To be discharged. Thus, the cold air flows out into the lower region of the refrigerating chamber 17 through the ventilation duct 60, thereby preventing the upper vegetable box 51 from being supercooled or freezing of the water tank 35a. In addition, by supplying cool air to the lower region of the refrigerating chamber 17, the temperature of the lower region of the refrigerating chamber 17 can be properly maintained.

In the above-described embodiment, it is preferable that the second through-hole is provided at such a size that air in the refrigerating compartment can be sucked into the ventilation duct smoothly during the operation of the refrigerating compartment. In addition, the second through hole is preferably provided such that the food contained in the lower region of the refrigerating compartment is not overcooled when the cold air on the refrigerating chamber evaporator is discharged to the lower region of the refrigerating compartment during the freezer compartment operation and the refrigeration compartment operation stop step.

In addition, when looking at the temperature distribution in the lower part of the refrigerating compartment, the temperature of the portion away from the freezing compartment is relatively higher than the temperature of the portion adjacent to the freezing compartment. To solve this problem, the cold air separator provided in the ventilation duct is inclined downward with respect to the partition wall so that the cold air flows toward the opposite side of the partition wall.

In short, the present invention, by the inlet and outlet of the cold air periodically through the ventilation duct provided in the lower part of the refrigerator compartment during the operation cycle of the refrigerator, it is possible to properly control the temperature as well as to prevent overcooling of the lower part of the refrigerator compartment.

As described above, according to the present invention, there is provided a refrigerator in which the inside of the refrigerating chamber is smoothly flowed to improve the cooling performance.

In addition, the refrigerator operation stop step, that is, when the refrigerator compartment fan is off and the freezer compartment fan is on, the cold air cooled by the refrigerator compartment evaporator is discharged to the lower compartment compartment, thereby providing a refrigerator that can prevent overcooling or freezing of the surrounding region of the refrigerator compartment evaporator.

During the refrigerator operation cycle, a refrigerator is provided that can control the temperature of the lower portion of the refrigerator by periodically inhaling and discharging cold air under the refrigerator compartment.

In addition, another object of the present invention is to provide a refrigerator capable of efficiently cooling a relatively high temperature portion of the refrigerating compartment lower region.

Claims (19)

A main cabinet having an outer wound to form an outer appearance and an inner wound formed with a freezing compartment and a refrigerating compartment at intervals filled with a foam material inside the outer wound; A freezer evaporator and a cold room evaporator; A refrigerator provided with a freezer compartment fan and a refrigerating compartment fan for blowing cold air generated by the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively. A refrigerating chamber duct forming a cold air flow path between the refrigerating chamber evaporator and the refrigerating chamber, the refrigerating chamber duct having at least one suction port formed at an upper side of the refrigerating chamber evaporator, and a discharge port formed at an upper side of the refrigerating chamber evaporator; A ventilation duct provided to communicate with the refrigerating chamber duct and a lower region of the refrigerating chamber; When the refrigerator compartment fan is on, cold air in the refrigerator compartment is sucked into the refrigerator compartment evaporator through the suction port and the ventilation duct, and when the refrigerator compartment fan is off, the cold air generated in the refrigerator compartment evaporator is vented. Refrigerator, characterized in that the outflow to the refrigerating chamber through a duct. The method of claim 1, The ventilation duct is installed in the foam of the refrigerator compartment. The method of claim 1, The vent duct includes a duct body and a plurality of cold air separators extending in the longitudinal direction of the duct body to separate cold air. The method of claim 3, The inner phase has a first through hole and a second through hole for communicating the refrigerating chamber duct and the refrigerating chamber lower region, respectively, The duct body includes an upper end corresponding to the first through hole, an inclined portion extending from the upper end and inclined toward the lower compartment of the refrigerating chamber, and a lower end connected to the inclined portion and corresponding to the second through hole. Refrigerator, characterized in that. 5. The method of claim 4, A drain tray is mounted below the refrigerating chamber evaporator, and the upper end of the ventilation duct is inclined at a predetermined angle toward the drain tray. The method of claim 5, The freezing compartment and the refrigerating compartment are divided into left and right by partition walls in the main cabinet. The ventilation duct is provided in the lower side of the opposite side of the partition wall. The method of claim 1, The freezer compartment evaporator and the refrigerator compartment evaporator, characterized in that connected in series. The method of claim 1, An evaporator separating partition is provided between the refrigerator compartment duct and the refrigerator compartment evaporator so that the suction port and the lower portion of the refrigerator compartment evaporator communicate with each other. When the refrigerator compartment is operating, the cold air introduced through the suction port is heat exchanged in the refrigerator compartment evaporator together with the cold air introduced through the ventilation duct. The method of claim 6, And the first through hole is provided at a lower portion of the refrigerating chamber evaporator on the side of the refrigerating chamber side wall facing the partition wall, and the duct body extends from the first through hole to the partition wall side. The method of claim 1, And a water tank is disposed in front of the refrigerator compartment evaporator. The method of claim 6, The interval between the side of the inclined portion facing the partition and the adjacent cold air separation plate at the upper end of the duct body is formed narrower than the distance between the side of the inclined portion in the position facing the partition and the adjacent cold air separation plate There is a refrigerator characterized by. A main cabinet having an outer wound to form an outer appearance and an inner wound formed with a freezing compartment and a refrigerating compartment at intervals filled with a foam material inside the outer wound; A freezer evaporator and a cold room evaporator; A refrigerator provided with a freezer compartment fan and a refrigerating compartment fan for blowing cold air generated by the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively. A refrigerating chamber duct forming a cold air flow path between the refrigerating chamber evaporator and the refrigerating chamber, the inlet through which cold air flows into the refrigerating chamber evaporator, and a discharge port formed at an upper side of the refrigerating chamber evaporator; Ventilation duct installed in the foam material and communicating with the refrigerating chamber duct and the lower region of the refrigerating chamber to enter and exit the cold air, and having at least one cold air separation plate extending in the longitudinal direction of the duct body and the duct body to separate the cold air. Including; The ventilation duct sucks cold air toward the refrigerator compartment evaporator during the operation of the refrigerator compartment, and discharges cold air from the refrigerator compartment evaporator when the refrigerator compartment is stopped. The method of claim 12, And a first through hole and a second through hole communicating with the refrigerating chamber duct and the lower region of the refrigerating chamber, respectively. The method of claim 13, The duct body includes an upper end corresponding to the first through hole, an inclined portion extending from the upper end and inclined toward the lower region of the refrigerating chamber, and a lower end connected to the inclined portion and corresponding to the second through hole. , And the first through hole communicating with the upper end is provided on an opposite side surface of the partition wall of the refrigerating compartment, and the inclined portion extends inclined toward the partition wall from the first through hole. The method of claim 14, The interval between the side of the inclined portion facing the partition and the adjacent cold air separation plate at the upper end of the duct body is formed narrower than the distance between the side of the inclined portion in the position facing the partition and the adjacent cold air separation plate There is a refrigerator characterized by. A main cabinet having an outer wound to form an outer appearance and an inner wound formed with a freezing compartment and a refrigerating compartment at intervals filled with a foam material inside the outer wound; A freezer evaporator and a cold room evaporator; A refrigerator provided with a freezer compartment fan and a refrigerating compartment fan for blowing cold air generated by the freezer compartment evaporator and the refrigerating compartment evaporator toward the freezer compartment and the refrigerating compartment, respectively. A partition wall partitioning the refrigerating compartment and the freezing compartment; A refrigerating chamber duct forming a cold air flow path between the refrigerating chamber evaporator and the refrigerating chamber, wherein at least one suction port through which cold air is introduced from the refrigerating chamber, and a discharge port formed at an upper side of the refrigerating chamber evaporator; And a ventilation duct installed in the foam material and communicating with the refrigerating chamber duct and the lower region of the refrigerating chamber, in which cold air enters and is deflected toward the opposite side of the partition wall. And when the refrigerating compartment fan is off and the freezer compartment fan is on, cold air generated in the refrigerating compartment evaporator flows out into the refrigerating compartment through the ventilation duct. The method of claim 16, The refrigerator characterized in that the evaporator separating partition is provided between the refrigerating chamber duct and the refrigerating chamber evaporator so that the cold air sucked from the suction port flows below the refrigerating chamber evaporator, so that the cold air sucked in the suction duct together with the heat exchange in the refrigerating chamber evaporator. . The method of claim 16, The ventilation duct includes: a duct body having one end coupled to an inner side of a lower side of the refrigerator compartment evaporator and the other end coupled to an inner side of a lower region of the refrigerator compartment; Refrigerator, characterized in that formed in the longitudinal direction in the duct body at least one cold air separation plate for separating the cold air. delete

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