KR100235442B1 - Temperature control method of a refrigerator - Google Patents

Abstract

The present invention relates to a temperature control method of a refrigerator.

The temperature control method according to the present invention includes a first step of sensing a temperature of at least one portion and a freezer compartment including a portion where the temperature is most likely to rise in the refrigerating compartment; A second step of comparing the temperature value sensed in the first step with a reference set temperature; And when at least one of the detected temperature values is higher than a reference set temperature, a third step of supplying cold air, and a portion of the refrigerator compartment that is most likely to rise in temperature is set near the door basket, and the temperature near the door basket. When rising, it is able to supply cold air quickly.

Description

How to control temperature of refrigerator

1 is a front configuration diagram showing the structure of a conventional refrigerator.

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

Figure 3 is a front configuration diagram showing the structure of the refrigerator of the present invention.

Figure 4 is a cross-sectional view showing the structure of the refrigerator of the present invention.

5 is a front view showing the inner configuration of the door of the present invention.

6 is an exemplary view showing the installation position of the cold air conditioner of the present invention.

7 is a flowchart showing the temperature control method of the present invention.

* Explanation of symbols for main parts of the drawings

20: freezer compartment 26: freezer compartment feedback circuit

30: Barrier 40: Refrigerating Room

42: refrigeration chamber duct 50: door

52: door basket 60: branch euro

61: door euro

The present invention relates to a temperature control method of a refrigerator, and more particularly, a plurality of temperature sensors are mounted, including a part which is likely to be the highest temperature inside the refrigerator, and any one of such temperature sensors does not satisfy the reference value. The present invention relates to a temperature control method configured to continuously supply cold air.

First, referring to FIGS. 1 and 2, a structure of a conventional refrigerator and a structure for supplying cold air will be described.

As shown, the inside of the refrigerator is divided into a freezer compartment 2 and a refrigerating compartment 4 by a barrier 5 filled with a heat insulating material therein. Looking at the supply structure of the cold air, a part of the cold air heat exchanged in the evaporator 6 through which the low-temperature low-pressure refrigerant passes inside is supplied to the freezing chamber 2 through the shroud 12 by the blowing fan 8, The remaining part is free-falled through the shroud 12 and supplied to the freezing compartment 4. The supply of cold air to the freezer compartment 4 falls freely through the refrigerating chamber duct 10, and from the rear of the refrigerator toward the front through the plurality of cold air discharge ports 10a formed on the front surface of the refrigerating chamber duct 10. Is configured to be discharged. In addition, the freezing chamber 2 maintains a relatively low temperature than the refrigerating chamber 4 due to the cold air that is bent by the above process.

The cold air supplied to the freezer compartment 2 and the refrigerating compartment 4 through this process becomes relatively high temperature through heat exchange with the food stored therein, and the air having a high temperature is formed inside the barrier 5. The freezer compartment return duct 2a and the refrigerating compartment return duct 4a move to the vicinity of the evaporator 6 again.

The supply of cold air as described above is determined based on the temperature of the freezing chamber 2. That is, whether or not the refrigeration cycle built in the refrigerator, that is, the refrigeration cycle including a compressor (not shown) or the like to perform heat exchange in the evaporator 6 while the refrigerant circulates is determined based on the temperature of the freezing chamber 2. It is. That is, when the temperature of the freezer compartment rises above the reference value by the temperature sensor provided on one side of the freezer compartment, the refrigeration cycle including the compressor is operated, and when the reference value is below the reference value, the refrigeration cycle is stopped.

In the conventional cold air supply structure, since the cold air supply of the refrigerating chamber is supplied only in one direction from the rear to the front, it is pointed out that the overall refrigeration effect cannot be achieved. In addition, since the actual operation of the freezing cycle is based on the temperature of the freezer compartment, it is problematic to keep the temperature of the refrigerator compartment as fresh as required.

In addition, even inside the refrigerating compartment, the door side, which is the position that is most separated from the supply source of the cold air, is not sufficiently supplied with the air and at the same time maintains a significantly higher temperature than the inside of the refrigerating chamber due to the inflow of external air due to frequent opening and closing of the door. There is a lot of tendency. Therefore, food stored in the basket 14 of the refrigerator door has a disadvantage in that it is particularly difficult to maintain freshness.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a temperature control method that can obtain a uniform refrigeration effect as a whole in the refrigerating chamber.

Another object of the present invention is to provide a temperature control method that can supply a sufficient amount of cold air, especially to the door side of the refrigerating chamber.

A temperature control method according to the present invention for achieving the above object, the first step of detecting the temperature of the at least one portion and the freezer compartment including the most likely to increase the temperature in the refrigerator compartment, and the temperature value detected in the first step And a second step of comparing the reference set temperature, and a third step of supplying cold air when at least one of the sensed temperature values is higher than the reference set temperature. According to this method, there exists an advantage that it is possible to supply cold air based on the temperature rise of the part which temperature rises most easily also in the refrigerating compartment.

In the refrigerating chamber, the temperature at which the temperature is most likely to be set is set near the door basket, so that the supply of cold air at the time of temperature rise is rapidly performed by frequent opening and closing of the door.

Next, the present invention will be described in more detail with reference to the embodiments of the present invention shown in the drawings.

First, the structure according to the present invention will be described with reference to FIGS. 3 to 6, and the temperature control method according to the present invention will be described.

The present invention is characterized by having a cold air passage through which cold air can be directly supplied to the door 50 side of the refrigerator, so that cold air can be supplied from front and rear of the refrigerating chamber. That is, by forming the branch flow path 60 in the freezer compartment return duct 26, it is possible to supply the cold air directly to the door 50 side of the refrigerator.

More specifically, the configuration of the present invention will be described. The cold air heat-exchanged in the evaporator 22 is partially supplied to the freezing chamber 20 by the blower fan 24, and the other part is free-falled and supplied to the refrigerating chamber 40. The supply of cold air to the refrigerating chamber 40 will be supplied forward through the refrigerating chamber duct 42 formed behind the refrigerating chamber 40. According to the present invention, the freezing chamber 20 becomes relatively high by heat exchange, and branches the branch flow path 60 in the freezing chamber return duct 26 which returns to the evaporator 22 side, which is branched to the refrigerator door 50 side. Induce. That is, as shown by the dotted line in FIG. 4, the branch flow path 60 branched from the freezer compartment return duct 26 inside the barrier 30 has a front surface of the refrigerator compartment adjacent to the door 50 along the wall surface of the barrier 30. Is induced until.

And, as shown in FIG. 5, the outlet of the branch passage 60 guided to the front side of the refrigerating chamber is connected to the door passage 61 formed in the door 50 to be supplied to the inside of the door 50. To make it possible. That is, the door passage 61 of the door 50 is formed to be in communication with the branch passage 60 when the door 50 is closed to the main body of the refrigerator, and receives cold air from the freezing chamber return duct 60. It is supplied to the inside of the door 50. The door passage 61 is connected to the vertical passage 62 and the vertical passage 62 formed in the vertical direction in the interior of the door, and vertical passage 64 connected in the horizontal direction to the lower portion of the door basket 52. It consists of. In the vertical passage 64, a plurality of cold air discharge holes 66 through which cold air is discharged are formed.

In the present embodiment, the discharge hole 66 is illustrated and described as being molded at the lower end of the door basket 52, but is not limited thereto, and may supply cold air toward the rear of the refrigerator from the inside of the door 50. If so, it is not limited by the molding position. In the present embodiment, the discharge hole 66 is molded along the lower end of the door basket 52, so that the cold air discharged through it can be directly supplied to the specimen stored in the door basket 52, the door basket The food stored in (52) can be kept fresher. As described above, according to the present invention, part of the cold air of the freezer compartment return duct 26 returned from the freezer compartment 20 to the evaporator 22 side is used again for supplying the cold air to the refrigerator door basket 52 side. As described above, the cold air that is heat-exchanged for cooling in the freezing compartment 20 flows inside the freezing compartment return duct 26, but the internal temperature of the freezing compartment 20 is relatively lower than that of the refrigerating compartment 40. Since it is holding | maintaining, it turns out that supplying to the part of the door basket 52 is fully cooled.

As shown in FIG. 6, inside the branch flow path 60, a cold air blocking device 70 capable of intermittent supply of cold air is provided. The cold air cutoff device 70 may control the supply of cold air to the basket 52 part according to the temperature of the door basket 52 part (or the temperature inside the refrigerating chamber which may indicate the temperature of the door basket part). . That is, the cold air cutoff device 70 is to control the cold air according to the temperature measured by the temperature sensor 72b.

Next, a temperature sensor for supplying cold air to the refrigerating chamber 40 according to the present invention will be described.

According to the present invention, as shown in FIG. 3, a plurality of temperature sensors 72a and 72b are provided inside the refrigerating chamber. The temperature value detected by the temperature sensors 72a and 72b is transmitted to a microprocessor (not shown) of the refrigerator itself. Of course, although not shown, the freezer compartment temperature sensor is installed in the freezer compartment 20 in the same manner as the conventional art, and the temperature value detected by the freezer compartment sensor may be transmitted to the microprocessor of the refrigerator.

The plurality of temperature sensors 72a and 72b provided in the refrigerating chamber 40 are provided in the most severe temperature variation even inside the refrigerating chamber. For example, it is provided in the part adjacent to the refrigerating chamber duct 42 of the back of a refrigerator, and the part closest to a door. For example, in the conventional refrigerating chamber, at least the portion adjacent to the door basket 52 which is the highest temperature portion should be installed. In FIG. 3, it is assumed that the temperature sensor 72b is installed in the closest part to the door basket 52 as described above, so that the temperature of the door side can be sensed.

7 is a flowchart showing the temperature control method according to the present invention, and shows only a process relating to whether or not the compressor for driving the refrigeration cycle is driven.

That is, when it is determined that the supply of cold air is required under the conditions described below, the refrigeration cycle is operated by driving the compressor to supply cold air.

As shown, according to the present invention, the temperature is checked by a plurality of temperature sensors installed in the freezer compartment and the refrigerating compartment inside the refrigerator during operation of the refrigerator (apart from whether the refrigeration cycle is operated), and the reference value is either one of the reference values. The refrigeration cycle is driven below. In more detail, during operation of the refrigerator, it is first determined whether the current temperature Rf of the freezer compartment is lower than or higher than the reference temperature (step 112). If the temperature is higher than the reference temperature, the flow returns to step 110 to drive the freezing cycle. To supply cold air. When the present temperature Rf of the freezer compartment satisfies the reference set value, it is next determined whether the present temperature Rr of the refrigerating compartment is lower than the reference temperature set (step 114). Here, the present temperature Rr of the refrigerating compartment refers to an arbitrary temperature inside the refrigerating compartment. For example, referring to a temperature sensed by the temperature sensor 72a in FIG. 3, the temperature inside the refrigerator is sensed. If the temperature is higher than the reference set temperature, the flow returns to step 110 to operate the refrigeration cycle to supply cold air. When it is determined that the temperature sensed by the temperature sensor 72a is lower than the reference set temperature, in step 116, the temperature near the door basket 52 compares the current temperature Rb with the reference set temperature. Here, the temperature of the door basket 52 is an exemplary part representing the temperature of the part which tends to become the highest temperature in a refrigerator compartment actually. If the temperature of the door basket 52 is higher than the reference set temperature, go to step 110, the refrigeration cycle is operated, if it is lower than the set temperature, go to step 118 to stop the driving of the refrigeration cycle. And even in this stopped state, while always detecting the temperature installed in a number of places inside the freezer compartment and the refrigerating compartment, if any one temperature rises above the reference value, the refrigeration cycle is driven to supply cold air.

In addition, the driving of the cold air shutoff device 70 installed in the branch passage 60 described above includes a sensor 72b (see FIG. 3) capable of detecting a temperature of a portion of the door basket 52 in the refrigerating chamber 40. Is determined by The temperature sensor 72b is attached to a portion closest to the door basket 52 in the refrigerating chamber 40, or is directly attached to the door basket 52. Therefore, based on the temperature sensed by the sensor 72b, it is determined whether to supply cool air to the part of the door basket 52.

And, the internal configuration of the cold air blocking device 70 will be able to use a known one. That is, it can also be configured as a conventional one to manually block the supply of cold air, it is also possible to use a conventional technique that automatically opens and closes based on the temperature sensed by the sensor (72b). For example, the opening and closing plate 74 of the cold air cutoff device 70 opens and closes the passage of the branch passage 60, but the movement of the opening and closing plate 74 may use a motor. It is also possible to use a gas bellows-type damper that operates to open and close the branch passage 60 directly based on the temperature near the basket 52.

As described above, according to the present invention, the present temperature is always monitored by a plurality of temperature sensors installed in the freezer compartment or the refrigerating compartment, and when any one of the temperatures falls below the reference set value, the cold cycle is driven by driving the refrigeration cycle. It is configured to supply. Therefore, when the supply of cold air is controlled in this way, it can be seen that the supply of cold air rapidly proceeds to the refrigerating compartment, especially by the temperature rise of the refrigerating compartment.

In addition, in the present invention, by providing a temperature sensor at a portion where the temperature is most likely to rise even in the refrigerating chamber, the refrigerating chamber can always maintain a temperature below a predetermined temperature.

And even in such a configuration, especially the door basket portion can always be kept at a fresh temperature by the configuration of the branch flow path for branching and supplying the cold air to the door basket and the configuration of the cold air cut-off device for controlling the passage of the branch flow path. At the same time, the overcooling of the part has the advantage of stopping the supply of cold air to the part.

According to the present invention described above, the temperature of the refrigerating compartment can always be maintained at a temperature below a predetermined value, thereby maintaining the freshness of the food to be stored and at the same time the door basket portion of the refrigerating compartment where the temperature is easy to rise, especially in the refrigerating compartment. It is expected that the supply of cold air can be selectively provided.

Claims (3)

A first step of sensing a temperature around the door basket of the refrigerating compartment and around the inner wall of the refrigerating compartment; A second step of comparing each of the temperature values sensed in the first step with a reference set temperature; And supplying cold air to a refrigerating compartment when at least one of the detected temperature values is higher than a reference set temperature. The method of claim 1, wherein the third step comprises supplying cold air from the door basket to the refrigerating compartment. The method of claim 2, wherein the third step includes inducing cold air circulated in the freezer compartment to the door basket and supplying the cold air to the refrigerator compartment.

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