KR100220970B1 - Refrigerator discharging cool air from a door - Google Patents

Abstract

The refrigerator according to the present invention includes a door duct installed inside the door and having a plurality of cold air inlets and a plurality of cold air outlets opened on the inner side of the door, and a blower fan installed in the cold air inlet to supply the cold air in the refrigerating chamber into the door duct. do. Cold air in the refrigerating compartment is attracted to the door side by the blowing fan, and thus cold air in the refrigerating compartment is uniformly distributed. In addition, the sucked cold air is supplied to the pocket installed on the inner side of the door through the cold air discharge port, thereby cooling the inside of the pocket effectively.

Description

Refrigerator which discharges cold air from door {REFRIGERATOR DISCHARGING COOL AIR FROM A DOOR}

The present invention relates to a refrigerator for discharging cold air from a door, and more particularly, to a refrigerator capable of sucking and supplying cold air in a refrigerating chamber from a door side.

1 is a side cross-sectional view of a conventional refrigerator. The refrigerator is installed in the cabinet 10 forming the freezing compartment 21 and the refrigerating compartment 22 partitioned by the partition 27, and the freezing compartment 21 and the refrigerating compartment 22, respectively. It has a freezer compartment door 24 and the refrigerating compartment door 25 which open and close the door.

A compressor 23 is provided at the lower rear of the cabinet 10, and an evaporator 29 is installed at the rear of the freezer compartment 21 to generate cold air by evaporating the refrigerant supplied from the compressor 23. In the upper part of the evaporator 29, a cooling fan 19 is provided which blows cold air generated by the evaporator 29 and supplies it to the freezing chamber 21 and the refrigerating chamber 22.

On the rear wall surfaces of the freezing chamber 21 and the freezing chamber 22, a plurality of cooling mechanisms 16 and 18 are formed. In the closed state of the refrigerating chamber door 25, the cold air generated in the evaporator 29 is blown by a cooling fan 19 installed above the evaporator 29, and the freezer compartment 21 and the refrigerating compartment are passed through the respective cooling mechanisms 16 and 18. (22) is supplied, thereby freezing and refrigerating the food contained in the freezer compartment 21 and the refrigerating compartment 22.

However, in such a typical refrigerator, since the cold air is supplied only from the rear of the refrigerator, the cold air distribution of the refrigerating compartment 22 is not uniform, so that the food stored in the refrigerating compartment 22 is supercooled or low-cooled according to the portion of the refrigerating compartment 22. I have a problem. In particular, it is becoming more difficult to keep the temperature in the refrigerating chamber 22 uniform in accordance with the trend of increasing the size of the refrigerator. Accordingly, in addition to the rear wall surface of the refrigerating chamber 22, a refrigerator employing a so-called three-dimensional cooling method for discharging cold air from both sidewall surfaces of the refrigerating chamber 22 has been devised. In such a refrigerator, ducts for supplying cold air extend to the rear wall surface and both sidewall surfaces of the refrigerating chamber 22 to supply cold air from three surfaces. In the three-dimensional cooling system, the ubiquity of cold air can be largely overcome.

However, such a three-dimensional cooling method of the refrigerator has a problem that the cooling near the door is difficult to achieve efficiently. When the refrigerator door is opened and closed, a portion adjacent to the door, in particular, the inside of the food storage pocket installed on the inner side of the door is directly in contact with the outside air, thereby rising to the temperature of the outside air within a short time. However, in the three-dimensional cooling type refrigerator, it is difficult to achieve rapid uniform cooling because the space adjacent to the door and the space inside the pocket are not directly cooled. Accordingly, a refrigerator has been devised in which cold air is also supplied from the door side so that cold air can be discharged from four wall surfaces in the refrigerating chamber.

Figure 2 is a plan sectional view of a conventional four-sided discharge type refrigerator. The refrigerator having a four-sided discharge system includes a refrigerating chamber duct 45 extending to three surfaces in the refrigerating chamber 42 and a door duct 49 for providing a flow path of cold air in the door 47. The door duct 49 and the refrigerating chamber duct 45 are connected by the connecting pipe 50. The refrigerating chamber duct 45 and the door duct 49 have a plurality of cold air discharge ports 53 opened into the refrigerating chamber 42. Cold air from an evaporator (not shown) is supplied to the refrigerating chamber duct 45 and the door duct 49, and the supplied cold air is discharged through the cold air discharge port 53. Accordingly, a four-sided refrigerator is implemented.

However, in the conventional four-sided discharge type refrigerator, there is an effect of supplying cold air to a portion adjacent to the door 47 and inside the pocket of the inner side of the door, but sufficient to maintain the cooling strength in the refrigerating chamber 42 uniformly. The disadvantage is that no effect can be obtained. In particular, in the state in which the food is filled in the refrigerating compartment 42, even if the cold air is discharged from the four sides, the flow of cold air is interrupted by the foods to supply the cold air to the central portion of the refrigerating compartment 42 not sufficiently. In addition, since the door 47 is made independently of the cabinet 40, the connector 50 connecting the door 47 and the cabinet 40 is exposed to the outside, and the connector 50 is used for a long time when the refrigerator is used. There is a risk of breakage and cause leakage of cold air.

Accordingly, an object of the present invention, in consideration of the above problems, by supplying cold air from the door side, it is possible to quickly cool the area adjacent to the door in the refrigerating compartment and inside the pocket installed in the door, and even distribution of cold air in the refrigerating compartment It is to provide a refrigerator that can achieve.

1 is a side cross-sectional view of a conventional refrigerator.

Figure 2 is a plan sectional view of a conventional four-sided discharge method refrigerator.

3 is a side sectional view of a refrigerator according to the present invention;

4 is an inner side view of the door of the refrigerator of FIG.

Figure 5 is an enlarged side cross-sectional view showing a flow of cold air in the refrigerator of the present invention.

Figure 6 is a flow chart showing the operating state of the present invention.

* Explanation of symbols for main parts of the drawings

71: freezer 72: refrigerator

74: freezer door 75: cold storage door

80: door duct 81: cold air supply port

83: cold air intake 90: blowing fan

91: push switch 93,95: temperature sensor

According to the present invention, there is provided a refrigerator forming a refrigerating compartment, and a refrigerator provided in the refrigerating compartment to open and close an opening of the refrigerating compartment, and having a plurality of covers, the refrigerator being provided in a central region of the inner side of the door. A cold air suction port configured to suck cold air from the refrigerating compartment; A pair of cold air supply holes provided in upper and lower regions of the inner side of the door to discharge cold air sucked through the cold air suction opening into the cover and the refrigerating chamber; A door duct communicating with the cold air suction port and the cold air supply port to provide a passage of cold air; Door opening and closing detection means for detecting whether the door is opened or closed; And a blower fan which is operated when the door is closed by the door opening / closing detecting means to suck the cold air of the refrigerating compartment into the cold air suction opening and discharge the cold air again through the cold air supply opening.

Here, the door opening and closing detection means for detecting the opening and closing of the door is installed in the refrigerating chamber, the blowing fan is controlled to operate only when the closing of the door is detected by the door opening and closing detection means.

In addition, the refrigerating chamber is provided with a temperature sensing means for detecting the temperature of the portion adjacent to the door in the refrigerating chamber and the spaced apart from the door, the blowing fan is the temperature of the portion adjacent to the door is spaced apart from the door It is preferably controlled to operate when the temperature is higher than the temperature of the portion and when the temperature in the refrigerating chamber is higher than the cooling temperature set by the user.

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

3 is a side cross-sectional view of the refrigerator according to the present invention, FIG. 4 is an inner side view of the door of the refrigerator of FIG. 3, and FIG. 5 is a side cross-sectional view showing a flow of cold air by partially expanding the inside of the refrigerator. The refrigerator according to the present invention, like the conventional refrigerator shown in FIG. 1, has a cabinet 60 forming a freezer compartment 71 and a refrigerator compartment 72 partitioned by a partition wall 77, a freezer compartment 71 and a refrigerator compartment. It is provided in 72, and has the freezing chamber door 74 and the refrigerating chamber door 75 which open and close the freezing chamber 71 and the refrigerating chamber 72, respectively. Each door 74, 75 is hinged to the cabinet 60. The inner surface of the refrigerating chamber door 75 is formed with a pocket 76 for storing food.

The compressor 73 is provided in the lower part of the rear surface of the cabinet 60, and the evaporator 79 which produces the cold air by evaporating the refrigerant | coolant supplied from the compressor 73 is provided in the rear surface of the freezer compartment 71. As shown in FIG. In the upper part of the evaporator 79, a cooling fan 69 is provided which blows cold air generated by the evaporator 79 and supplies it to the freezing chamber 71 and the refrigerating chamber 72.

A plurality of rear side cooling mechanisms 68 are formed on the rear wall surface of the refrigerating chamber 72, and a plurality of side side cooling mechanisms (not shown) are formed on the side wall surface. In the closed state of the refrigerating chamber door 75, the cool air generated in the evaporator 79 is supplied into the refrigerating chamber 72 through the respective cooling mechanisms, thereby cooling the food contained in the refrigerating chamber 72.

A cold air suction port 83, a cold air supply port 81, a door duct 80, a blower fan 90, and a cover 76 are installed inside the refrigerating chamber door 75 of the refrigerating chamber 72.

The cold air suction port 83 is installed in the central region of the inner side of the refrigerating chamber door 75 and communicates with the central portion of the door duct 80 to be described later, and is discharged from the rear cooling mechanism 68 and the side cooling mechanism (not shown). The cold air of the refrigerating compartment 72 is sucked into the door duct 80 by the operation of the blower fan 90 to be described later.

The cold air supply port 81 is installed in the upper and lower regions of the inner side of the refrigerating chamber door 75, communicates with the upper and lower ends of the door duct 80 to be described later, and is operated by the operation of the soong fan 90 which will be described later. The cold air introduced into the suction port 83 is discharged into the cover 76 and the refrigerating chamber 72 so that the cold air is circulated.

The door duct 80 is provided in the up and down direction on the inside of the refrigerating chamber door 75 side and communicates with the cold air suction port 83 and the cold air supply port 81 to become a passage of cold air.

Blowing fan (90) is installed in the cold air intake port (83), the cold air in the refrigerating chamber (72) is introduced into the door duct (80) through the cold air intake port (83) again through the cold air supply port (81) ) To be discharged to the inside, and forced circulation of cold air is made.

The cover 76 is installed at a predetermined interval inside the refrigerating chamber door 75 and is cooled by cold air discharged from the rear side cooling mechanism 68, the side side cooling mechanism (not shown), and the cold air supply port 81. .

The push switch 91 is provided in the front surface of the refrigerating chamber 72. The push switch 91 is pressed by the refrigerating chamber door 75 when the refrigerating chamber door 75 is closed, and is depressed when the refrigerating chamber door 75 is opened. The microcomputer (not shown) installed in the refrigerator detects that the refrigerating chamber door 75 is opened when the push state of the push switch 91 is released. The blowing fan 90 operates when the closing of the refrigerating chamber door 75 is detected through the push switch 91. Therefore, suction of cold air through the cold air suction port 83 and supply of cold air through the cold air supply port 81 are performed only in the closed state of the refrigerating chamber door 72.

In the refrigerating chamber 72, two temperature sensors 93 and 95 are provided. The temperature sensors 93 and 95 are disposed adjacent to the inner side of the refrigerating chamber door 75 to detect a temperature of a portion of the refrigerating chamber 72 adjacent to the refrigerating chamber door 75, and the refrigerating chamber 72. It is disposed adjacent to the rear wall surface of the) is composed of a cooling chamber temperature sensor 95 for sensing the temperature of the refrigerating chamber door 75 and the spaced apart in the refrigerating chamber 72. The temperature sensed by the two temperature sensors 93 and 95 is input to the microcomputer. If the temperature detected by the temperature sensor 93, 95 differs by more than a predetermined temperature, that is, the temperature of the vicinity of the refrigerating chamber door 75 detected by the door temperature sensor 93 is detected by the cooling chamber temperature sensor 95. When the temperature is higher than a predetermined temperature of one rear surface of the refrigerating chamber 72, the blower fan 90 is operated to supply cold air into the door duct 80.

Hereinafter will be described the operation and effect of the refrigerator according to the present invention.

Figure 6 is a flow chart showing the operation of the cooling fan and blowing fan according to whether the opening and closing of the refrigerating chamber door and the temperature sensing of the temperature sensor. In the initial state (S1) step proceeds to the step (S2) of detecting the opening or closing of the refrigerating chamber door (75), when the opening state of the refrigerating chamber door (75) is detected by the push switch 91 in this (S2) step In step (S6), the microcomputer stops driving the blower fan 90 regardless of the temperatures detected by the two temperature sensors 93 and 95.

When the closed state of the refrigerating chamber door 75 is detected by the push switch 91 in the step S2, the microcomputer cools the blower fan 90 and the cooling unit based on the temperatures detected by the two temperature sensors 93 and 95. Operate the fan 69. That is, the temperature in the refrigerating chamber 72 detected by the two temperature sensors 93 and 95 in step S3 is higher than the cooling temperature set by the user, and the temperature detected by the door temperature sensor 93 in step S4. If the predetermined temperature is higher than a predetermined temperature compared to the temperature inside the refrigerating chamber 72 detected by the cooling chamber temperature sensor 95, the microcomputer operates the blower fan 90 and the cooling fan 69 in step (S5). At this time, the cold air is discharged from the wall surface of the refrigerating chamber 72 through the rear cooling mechanism 68 and the side cooling mechanism in the refrigerating chamber 72, and the cold air sucked into the door duct 80 according to the operation of the blower fan 90. Is discharged from the inner surface of the refrigerating chamber door (75) through the cold air supply port (81) of the door duct (80). Accordingly, the cold air is supplied to the refrigerating chamber 72 from four surfaces, such as the rear wall surface and both sidewall surfaces of the refrigerating chamber 72, and the inner surface of the refrigerating chamber door 75.

In operation S3, the temperature of the temperature detection sensors 93 and 95 is lower than the temperature set by the user. In operation S4, the measurement temperature of the door temperature sensor 93 is the measurement temperature of the cooling chamber temperature sensor 95. If the temperature is not higher than a predetermined temperature, the microcomputer stops the operation of the cooling fan 69 and the blowing fan 90 in step S6.

In this way, since the blower fan 90 sucks cold air in the refrigerating chamber 72, the cold air discharged from the inner surfaces of the refrigerating chamber 72 is attracted toward the refrigerating chamber door 75, and thus the cold air is introduced into the refrigerating chamber 72. Evenly distributed. In addition, cooling of the food contained in the pocket 76 is performed so that the cool air is also supplied into the pocket 76 of the refrigerating chamber door 45 by the cold air discharged through the cold air supply port 81.

As described above, according to the present invention, the cool air is supplied from the door side to enable rapid cooling of the area adjacent to the door in the refrigerating compartment and the pocket installed in the door, and provides a refrigerator capable of achieving a uniform distribution of the cold air in the refrigerating compartment. do. In addition, since there is no need to install a separate connector for supplying cold air inside the door, there is no problem such as leakage of cold air due to damage of the connector.

While the invention has been shown and described with respect to certain preferred embodiments, the invention is not limited to the embodiments described above, but the subject matter belongs without departing from the spirit of the invention as claimed in the claims. Anyone of ordinary skill in the art would be able to make various variations.

Claims (2)

In the refrigerator provided with the cabinet 60 which forms the refrigerator compartment 72, and the door 75 provided in the said refrigerator compartment 72, opening and closing the opening of the refrigerator compartment 72, and having the several cover 76 provided, A cold air suction port 83 installed at a central area of the inner side of the door 75 to suck cold air from the refrigerating chamber 72; A pair of cold air supply holes 81 provided in upper and lower regions of the inner side of the door 75 to discharge cold air sucked through the cold air suction opening 83 into the cover 76 and the refrigerating chamber 72. ; A door duct 80 communicating with the cold air suction port 83 and the cold air supply port 81 to provide a passage of cold air; A door opening / closing detecting means configured to detect whether the door 75 is opened or closed, and a push switch 91 that is pressed and released when the door 75 is opened or closed; And Blowing fan which is operated when the door 75 is closed by the door opening and closing detection means to suck the cold air of the refrigerating compartment 72 into the cold air suction port 83 to be discharged again through the cold air supply port 81. A refrigerator for discharging cold air from the door, characterized by including (90). The method of claim 1, Temperature sensing consisting of a door temperature sensor 93 disposed adjacent to the door 75 in the refrigerating chamber 72 and a refrigerating chamber temperature sensor 95 disposed on a side opposite to the door 75 in the refrigerating chamber 72. Further comprising means, The blower fan 90 is a portion in which the temperature in the refrigerating chamber 72 is higher than the cooling temperature set by the user as a result of the sensing by the temperature sensing means, and the temperature of the portion adjacent to the door 75 is spaced apart from the door. The refrigerator for discharging cold air from the door, characterized in that controlled to operate when the temperature is higher than.

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