KR20010055301A - Operation method for refrigerator - Google Patents

Abstract

PURPOSE: A refrigerator operating method is provided to improve preservation efficiency of foodstuff by separately operating a freezing compartment and a refrigeration compartment and to reduce power consumption by removing unnecessary operating time of a freezing cycle device. CONSTITUTION: A method for operating a refrigerator comprises the steps of: detecting a temperatures of freezing and refrigeration compartments; comparing the detected temperatures to the predetermined values stored in a control unit; and selecting an operating mode depending on the result of temperature comparison. As the freezing compartment and the refrigeration compartment are kept at uniform temperatures, local super-cooling of the refrigeration compartment is avoided and preservation efficiency of foodstuff is improved. By circulating the cold air returned from the freezing compartment through the refrigeration compartment, operating time of a freezing cycle device is saved. Further, power consumption is reduced.

Description

How to Operate a Refrigerator {OPERATION METHOD FOR REFRIGERATOR}

The present invention relates to a refrigerator, and more particularly, to a method of operating a refrigerator that can be circulated only when needed in a freezer compartment as a freezer cold compartment and a cold compartment cold compartment.

In general, the refrigerator is provided with a freezer compartment for freezing the meat and the like by using cold air and a refrigerating compartment for storing vegetables and the like, and the freezer compartment has a cold air circulation structure of a freezer compartment, while a cold compartment has a cold air circulation structure of a refrigerator compartment. Consists of.

As shown in FIGS. 1A and 1B, the refrigerator has a freezer compartment F at the upper side of the barrier 1 with a barrier 1 partitioning the freezer compartment F and the refrigerating compartment R. As shown in FIGS. And the refrigerator compartment R is formed in the lower side, respectively.

The freezing chamber F is provided with a cooling chamber 2 for generating cold air on the rear wall side thereof, and a shroud 3a for partitioning the freezing chamber F and the cooling chamber 2 on the front side of the cooling chamber 2; The grill pan 3b is installed to be blocked, and a cold air discharge port (unsigned) is formed in the shroud 3a and the grill pan 3b to allow the cold air generated from the cooling chamber 2 to be discharged to the freezing chamber F. have.

The cooling chamber 2 is equipped with a single blower fan 4 which collectively sucks and discharges the cold air of the freezer compartment F and the refrigerating chamber R, and the front side of the blower fan 4 and the shroud 3a and Between the rear side of the grill pan (3b) and the compressor (C) and a condenser (not shown) mounted in the machine room (not shown) forming a refrigeration cycle unit, a single evaporator for generating a cold cool by heat exchange the hot cold (5) ) Is installed.

The refrigerating chamber (R) is in communication with the cooling chamber by a multi-duct (6) provided with a cold air discharge port (unsigned) to guide a part of the cold air to the refrigerating chamber (R).

As shown in FIG. 2, the barrier 1 has a freezer compartment cold air return passage 1a which directs the freezer compartment cold air back to the cooling chamber 2 and a cold compartment side cold air return which guides the refrigerator compartment cold air back to the cooling chamber 2 as shown in FIG. The flow path 1b is formed separately so that they do not overlap with each other.

In the figure, reference numeral (D) denotes a freezer compartment and a refrigerator compartment door, respectively.

The cold air circulation process of the conventional refrigerator as described above is as follows.

That is, the hot coolant sucked by the blowing fan 4 is cooled while passing through the evaporator 5, and a part thereof is cooled through the cold air discharge port (unsigned) of the shroud 3a and the grill pan 3b. And the rest hits the shroud 3a and the grill pan 3b and falls into the multi-duct 6 through a refrigerator compartment guide duct (not shown) while falling naturally. Discharged to R).

At this time, the cold coolant discharged to the freezer compartment (F) is circulated through the freezer compartment (F) and brought into the cooling chamber (2) through the cold air return flow path (1a) for the freezer compartment of the barrier (1), while the cold compartment ( The cold coolant discharged to R) circulates through the refrigerating chamber R, and is brought into the cooling chamber 2 through the cold air return flow path 1b for the refrigerator compartment of the barrier 1, and thus the hot air circulated in the freezing chamber F. A series of hot chillers that circulate the cold air and the refrigerating chamber R are mixed with each other in the cooling chamber 2 and discharged to the evaporator 5 by the blowing fan 4 to be cooled and flowed into the freezing chamber F and the refrigerating chamber R. Was to repeat the process.

However, in the conventional refrigerator as described above, the freezer compartment F and the refrigerating compartment R are controlled together by a single evaporator 5 and a blower fan 4, but this is because of the cold cooler generated in the cooling chamber 2. Although the temperature is usually around -26 ° C, which is suitable for the freezer set point, this cold chiller is supplied to the freezer compartment (F) and the refrigerator compartment (R) at the same time, so that there is a risk of locally supercooling the food stored in the refrigerator compartment (R) in particular. there was.

In addition, the cold air returned from the freezer compartment (F) and the cold air returned from the refrigerating compartment (R) are mixed at the inlet side of the cooling compartment (2) to pass through the evaporator (5), but the relatively low temperature freezer compartment return cooler As the temperature is increased by the relatively high temperature of the refrigerating chamber side return chiller, there is a problem that the power consumption increases as the operation time of the refrigeration cycle apparatus is increased.

The present invention has been made in view of the problems of the conventional refrigerator as described above, while cooling the freezer compartment and the refrigerating compartment collectively with one evaporator, so that the freezer compartment and the refrigerating compartment are suitable for each room to improve the storage of food. Its purpose is to provide a method of operating a refrigerator.

Another object of the present invention is to provide an operation method of a refrigerator having high power consumption efficiency by eliminating unnecessary operating time of the refrigeration cycle apparatus by allowing the cold air returned from the freezer compartment and the cold air returned from the freezer compartment to be independently circulated.

1A and 1B are a front view and a longitudinal cross-sectional view of a conventional refrigerator.

Figure 2 is a cross-sectional view showing a freezer return side of the freezer compartment and the refrigerating compartment side in the conventional refrigerator.

Figures 3a and 3b are longitudinal sectional views in front and side views of the present invention refrigerator.

Figure 4 is a cross-sectional view showing a freezer return side of the freezer compartment and the refrigerating compartment side of the refrigerator in the present invention.

FIG. 5 is a detailed view of part “A” of FIG. 3B; FIG.

6a and 6b are longitudinal cross-sectional view showing the operation of the damper during the freezer compartment operation and the refrigerator compartment operation of the present invention refrigerator.

7 is a flowchart illustrating a method of operating the refrigerator of the present invention.

** Explanation of symbols for main parts of drawings **

2: evaporator 3a: grill pan

5: evaporator 10: barrier

11: cold air return flow path for the freezer side and the refrigerating compartment side

11a: cold air return flow path in the freezer compartment 11b: cold air return flow path in the freezer compartment

21: freezing chamber side blowing fan 22: cold compartment side blowing fan

30: damper 31: hinge protrusion

32: shielding plate S1: cold air flow path on the freezer side of the grill pan

S2: Cold air flow path in the fridge side of the grill pan

In order to achieve the object of the present invention, the internal temperature detection step of detecting the temperature of the freezer / refrigerator compartment by the freezer compartment and the refrigerator compartment temperature sensor installed in the freezer compartment and the refrigerator compartment, respectively;

An internal temperature comparison step of comparing the detected internal temperature of the freezer compartment and the internal temperature of the refrigerating compartment with a set temperature of the refrigerating / freezing compartment stored in the controller;

According to the high temperature comparison result, there is provided a operation method of a refrigerator, characterized in that the operation is performed in the operation mode determination step of selecting and operating a normal load operation mode, a compressor stop mode, or a freezer compartment load operation mode.

To this end, in the operation mode determination step, if the detected freezer compartment high temperature and the refrigerating compartment high temperature are both within the set temperature range, the normal load operation mode is selected.

When the detected freezer compartment high temperature and the refrigerating compartment high temperature are both lower than the minimum temperature of the set temperature range, the compressor stop mode is selected.

When the detected freezer compartment high temperature is higher than the maximum temperature of the set temperature range of the freezer compartment, the freezer load operation mode is selected,

When the detected refrigerator compartment high temperature is higher than the maximum temperature of the set temperature range of the refrigerator compartment, the refrigerator compartment load operation mode is selected.

Hereinafter, the refrigerator according to the present invention will be described in detail based on the embodiment shown in the accompanying drawings.

Figure 3a and Figure 3b is a longitudinal sectional view in front and side view of the refrigerator of the present invention, Figure 4 is a cross-sectional view showing a freezer compartment and the refrigerating compartment side return flow path in the barrier of the present invention refrigerator, Figure 5 is part "A" of Figure 3b 6A and 6B are schematic views illustrating a cold air return flow path during a freezer compartment operation and a refrigerating compartment operation of the refrigerator of the present invention, and FIG. 7 is a flowchart illustrating a method of operating the refrigerator of the present invention.

As shown in the drawing, the refrigerator according to the present invention includes a cooling chamber in which a refrigerator main body is divided into a freezer compartment F and a refrigerator compartment R by a barrier 10, and cold air is generated on the rear wall side of the freezer compartment R. 2) is formed, the cooling chamber (2) is provided with a single evaporator (5) forming a refrigeration cycle device together with a compressor (C) and a condenser (not shown), one side of the evaporator (5) freezer compartment side A blowing fan 21 and a refrigerating chamber side blowing fan 22 are installed one by one, and the shroud 3a and grill pan 3b separating the freezing chamber F and the cooling chamber 2 are freezer compartment cold air outlets (unsigned). Is formed, and the multi duct 6 communicating the cooling chamber 2 and the refrigerating chamber R is formed with a refrigerating chamber side cold air discharge port (unsigned), and the freezer compartment F and the inside of the barrier 10. The cold freezer flow path 11 combined with a single freezer compartment and the cold compartment that guides the cold air circulated in the refrigerating chamber R back to the cooling chamber 2 is provided. The damper 30 is provided at the inlet side of the cold air return passage 11 to block the freezer compartment F and the cooling chamber 2 or to block the freezer compartment R and the cooling chamber 2 from each other. .

In consideration of the fact that the freezing chamber side blower fan 21 and the refrigerating compartment side blower fan 22 are separately installed, the grill pan 3b has a diaphragm (not shown) in the freezer compartment side cold air passage S1 and the refrigerating compartment side cold air passage S2. When the grill pan (3a) is mounted in the freezer compartment (F), the freezer compartment side cold air discharge port (unsigned) is formed in the freezer compartment side cold air passage (S1). In addition, the refrigerating chamber side cold air flow path (S2) is in communication with the multi-duct (6) to guide the cold chiller to the refrigerating chamber.

The barrier 10 has the above-mentioned freezing chamber side and the refrigerating chamber side combined cold air return passage 11 formed therein, and the freezer compartment side cold air suction opening 11a is formed at the upper end of the inlet side of the cold air return passage 11. The refrigerating chamber side cold air inlet 11b is formed at the lower end, and the outlet side of the cold air return passage 11 is in communication with the cooling chamber 2. In addition, the cold air return passage 11 is formed to gradually decrease in width from the inlet side to the inside to lower the pressure of the returning cold air as shown in FIG. desirable.

The damper 30 is hinge rod 31 protrudingly installed on the freezer compartment side and the refrigerating compartment side combined cold air return passage 11 of the barrier 10, and the hinge rod 31 is hinged to the freezer compartment side cold air intake 11a. ) And a shield plate 32 rotatably provided between the refrigerator compartment side cold air intake port 11b, and between the inner end of the shield plate 32 and the inner surface of the barrier 10. It consists of a synchronous motor (not shown) which rotates at right angles.

In the drawings, the same reference numerals are given to the same parts as in the prior art.

In the drawings, reference numeral D denotes a door.

The operation process of the refrigerator of the present invention configured as described above is as follows.

That is, as shown in Figure 7, the temperature sensor (not shown) installed in each of the freezer compartment (F) and the refrigerating chamber (R) by detecting the temperature of each chamber, whether the normal load conditions or freezer load conditions or cold room load conditions It determines the recognition and performs the operation for each condition.

First, in the case where the refrigerator of the present invention operates in a general load condition without opening and closing of a door (that is, the freezer compartment is -19 ° C to -17 ° C and the refrigerating compartment is 2 ° C to 4 ° C), the refrigeration cycle apparatus is basically a freezer compartment. In addition to operating in accordance with the operating conditions of (F), the freezer compartment side blowing fan 21 is operated to supply cold cool air generated in the evaporator 5 to the freezer compartment (F). At this time, as shown in Figure 6a the cooling plate 2 in a state in which the shield plate 32 of the damper 30 mounted on the cold air return passage 11 blocked the cooling chamber (2) and the refrigerating chamber (R). By only communicating with the freezer compartment (F), the cold air in the refrigerating compartment (R) maintains the current state while circulating only the cold air in the freezer compartment (F).

Then, when the temperature of the freezer compartment (F) reaches the set temperature, the operation of the refrigeration cycle apparatus is stopped and the freezer compartment side blowing fan 21 is stopped while the refrigerating compartment side blower fan 22 is operated to freeze cycle apparatus The cold air generated during the stop of the supply to the refrigerating chamber (R). In this case, as shown in FIG. 6B, the shielding plate 32 of the damper 30 blocks the freezing chamber F from the cooling chamber 2, while the refrigerating chamber R communicates with the cooling chamber 2 so as to communicate with the refrigerating chamber ( The cold air of R) is circulated.

Even in this case, since the proper temperature of the freezer compartment (F) is -18 ° C, while the proper temperature of the refrigerator compartment (R) is 3 ° C, the freezer compartment (R) is circulated even with the remaining cold under normal load conditions. It can fully cool to an appropriate temperature.

On the other hand, the refrigerator of the present invention is operated as follows under the freezer load condition (that is, when the temperature of the freezer compartment is -17 ° C or more).

When food having a large load is stored in the freezer compartment F, the internal temperature of the freezer compartment F is much higher than an appropriate temperature, so that the shield plate 32 of the damper 30 opens the freezer compartment F. In the state, the refrigerating cycle apparatus operates the refrigerating cycle apparatus and the freezing compartment side blowing fan 21 until the temperature of the freezing compartment f reaches the set temperature so that cold air is supplied to the freezing compartment F.

In this way, when the actual temperature of the freezer compartment F reaches the set temperature, the freezer compartment blower fan 21 stops, and the shield plate 32 of the damper 30 also has a freezer compartment (see FIG. 6B). F) is blocked and the refrigerating chamber (R) is opened. In addition, when the actual temperature of the refrigerating compartment (F) is sensed and the temperature of the refrigerating compartment (R) does not reach an appropriate temperature, the refrigeration cycle apparatus and the refrigerating compartment side blower fan 22 are operated or the refrigerating cycle apparatus is stopped. By operating only the refrigerator side blower fan 22 to supply the cold air so that the actual temperature of the refrigerator compartment R reaches the set temperature.

On the other hand, the refrigerator of the present invention is operated as follows in the refrigerator compartment load conditions (that is, when the temperature of the refrigerator compartment is 5 ° C or more).

That is, when food having a large load is stored in the refrigerating chamber R, since the internal temperature of the refrigerating chamber R is much higher than an appropriate temperature, the shielding plate 32 of the damper 30 is shown in FIG. 6B. As described above, in the state where the refrigerating chamber R is opened, the refrigerating cycle apparatus operates the refrigerating cycle apparatus and the freezing compartment side blower fan 21 until the temperature of the freezing compartment F reaches the set temperature so that the cold air is stored in the refrigerating compartment R. To be supplied.

In this way, when the actual temperature of the refrigerating compartment (R) reaches the set temperature, the refrigeration chamber side blowing fan 22 is stopped, as well as the damper 30 also blocks the refrigerating compartment (R) as shown in Figure 6a and the freezer compartment (F) is opened. In addition, when the actual temperature of the freezing compartment (F) is sensed and the temperature of the freezing compartment (F) does not reach the proper temperature, the freezing cycle apparatus and the freezing compartment side blower fan (21) are operated so that the actual temperature of the freezing compartment is set to the set temperature. It will supply cold air to reach.

As a result, the freezer compartment and the refrigerating compartment are collectively cooled using a single evaporator while the freezer compartment and the refrigerating compartment are separated from each other so as to suit the atmosphere of each chamber, thereby improving the storage properties of the food, and returning from the freezer compartment. Cooling and returning cold air from the refrigerating chamber are independently circulated to reduce the operating time of the unnecessary refrigeration cycle device to improve the power consumption efficiency.

The operating method of the refrigerator according to the present invention includes: a high temperature detection step of detecting a temperature of the freezer / refrigerator compartment by a freezer compartment and a refrigerating compartment temperature sensor installed in the freezer compartment and the refrigerating compartment, respectively; An internal temperature comparison step of comparing the detected internal temperature of the freezer compartment and the internal temperature of the refrigerating compartment with a set temperature of the refrigerating / freezing compartment stored in the controller; By performing the operation mode decision step of selecting and operating the normal load operation mode, the compressor stop mode or the freezer load operation mode according to the high temperature comparison result, the freezer compartment and the cooling compartment maintain the appropriate temperature, in particular the local supercooling of the refrigerating compartment It is possible to improve the storage of food by circulating the refrigerating chamber by using the cold air returned from the freezer compartment, thereby reducing the operating time of the refrigeration cycle apparatus to improve the power consumption efficiency.

Claims (2)

A high temperature detection step of detecting a temperature of the freezing / freezing compartment, respectively, by a freezing compartment and a refrigerating compartment temperature sensor installed in the freezing compartment and the refrigerating compartment; An internal temperature comparison step of comparing the detected internal temperature of the freezer compartment and the internal temperature of the refrigerating compartment with a set temperature of the refrigerating / freezing compartment stored in the controller; The operation method of the refrigerator, characterized in that for performing the operation mode determination step of operating by selecting the normal load operation mode, the compressor stop mode or the freezer load operation mode according to the high temperature comparison result. The method of claim 1, wherein in the operation mode determining step, when the detected freezer compartment inside temperature and the refrigerator compartment inside temperature are both within a set temperature range, the normal load operation mode is selected. When the detected freezer compartment high temperature and the refrigerating compartment high temperature are both lower than the minimum temperature of the set temperature range, the compressor stop mode is selected. If the detected freezer compartment high temperature is higher than the maximum temperature of the set temperature range of the freezer compartment, the freezer load operation mode is selected, And if the detected refrigerator compartment high temperature is higher than a maximum temperature of the set temperature range of the refrigerator compartment, selecting the refrigerator compartment load operation mode.