KR930000931B1 - Refrigerator - Google Patents

Abstract

No content.

Description

Refrigerator

The drawings show one embodiment of the invention,

1 is an electric circuit diagram of a main part.

2 is a schematic longitudinal front view of the entire refrigerator.

3 is an enlarged longitudinal side view of FIG.

Figure 4 is a longitudinal side view of the auxiliary fan portion.

5 is a block diagram of a refrigeration cycle.

6 is a diagram showing a control form in each function.

* Explanation of symbols for main parts of the drawings

1: refrigerator body 2: freezer

3: Function switching room 5: Refrigerating room

6: main cooler 7: main fan

10 damper plate 11: damper drive device

12: auxiliary fan 13: subcooler

14: heater 15: compressor

18: solenoid valve 22: freezer compartment function setting switch

24: chilled room function setting switch 26: refrigerator compartment function setting switch

28: quick freezer function setting switch 30: thawing room function setting switch

32: rapid refrigerating chamber function setting switch 33,38: flip-flop circuit

39, 41: timer circuit 45: thawing temperature detection circuit

46: temperature detection circuit in the function switching room 47: damper control circuit

48: relay coil for compressor and main fan 49: relay coil for solenoid valve driving

50: damper motor drive relay coil 51: auxiliary fan drive relay coil

52: relay coil for heater drive

53: output terminal of the freezer compartment temperature detection circuit

The present invention relates to a refrigerator in which multiple functions can be selected in a function switching room.

Conventionally, in the refrigerator, there is an alternative to set the storage temperature according to the type of food as one chamber. In such a refrigerator, a function switching room is installed in addition to the freezer and the refrigerating room. One of the functions of the chilled seal function and the refrigerator compartment was obtained.

In such a refrigerator, when the user sets the freezer function, the function switching room is controlled to maintain the temperature of the freezer function. When the chilled room function is set, the function switching room maintains the temperature state of the chilled function (about 0 ° C.). Control of the refrigerating compartment function by setting the refrigerating compartment function.

However, in recent years, the necessity of freezing foods in a short time, the need to thaw frozen foods, and the need to refrigerate foods in a short time have increased. In addition to the refrigerator compartment function, it is conceivable to obtain a rapid freezer compartment function, a thawing compartment function, and a rapid refrigerator compartment function.

By the way, in the refrigerator, one of the freezer compartment function, the chilled compartment function, and the refrigerating compartment function is usually used for the function switching room. Therefore, any one of the new quick freezer function, the thawing room function, and the rapid freezer function is set. Even when the control of the function is completed, it is conceivable to automatically set one of the freezer compartment function, the chilled compartment function and the rapid freezer compartment function.

However, in this case, when one of the freezing compartment function, the thawing chamber function, and the quick freezing chamber function is controlled and the control is completed, the first rapid, There is a fear that the food is deteriorated when the temperature in any of the following freezer function, chilled seal function and freezer function changes significantly with respect to the temperature condition in any one of the freezer function, the thawing room function and the quick freezer function.

That is, for example, if the chilled room function or the refrigerator compartment function is automatically set while leaving the frozen food out of the function switching room after the control of the quick freezer function is finished, the temperature of the frozen food is increased and deteriorated.

Also, after thawing food such as sashimi that has been frozen in the thawing room function, if the freezer function or the refrigerating room function is automatically set without leaving the food in the same manner, the food is frozen again or the temperature is increased. Brings about.

In addition, if a beverage such as juice at room temperature is rapidly refrigerated with a quick freezer function, and the beverage is left unattended, and the freezer function or chilled seal function is automatically set, the beverage may be excessively frozen or frozen. It may be unsuitable for drinking and deteriorating.

Accordingly, an object of the present invention is to provide a refrigerator that can be diversified in the function switching room so that it is easy to use and can prevent the deterioration of foods while attaining this diversification.

The present invention has a function switching room, by setting any one of a freezer compartment function, a chilled compartment function, a refrigerator compartment function, a quick freezer compartment function, a thawing compartment function, and a quick freezer compartment function to control the interior of the function telephone room to the set function state, When the control of the freezer function is terminated after the quick freezer function is set, the freezer function is automatically set.When the control of the thawing room function is terminated after setting the function of the thawing room function, the chilled room function is automatically set. When the rapid refrigerating chamber function control is finished after setting to have, the control is to automatically set the refrigerating chamber function.

The function is diversified because the function switching chamber is set to any one of the quick freezer compartment function, the thawing compartment function, and the rapid freezer compartment function in addition to the freezer compartment function, the chilled compartment function, and the refrigerating compartment function.

Since the freezer compartment function is automatically set when the control of the quick freezer compartment is finished, the food in the function switching chamber is kept frozen at the temperature after it is rapidly frozen.

When the control of the thawing chamber function is finished, the chilled seal function is automatically set, so that the food is thawed and maintained at the temperature in the function changeover room.

When the control of the quick refrigerating compartment function is finished, the refrigerating compartment function is automatically set, so that the food is rapidly frozen in the function switching room and maintained at that temperature.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

First, in Figs. 2 to 4, ″ 1 ″ is a refrigerator main body, inside which a freezer compartment 2 is located at the top, and a function switching chamber 3 and a chilled chamber 4 are respectively located at the left and right sides of the intermediate part. The refrigerator compartment 5 is comprised in the lower part, respectively.

The above-described function switching chamber 3 is alternatively set to any one of a freezer compartment function, a chilled compartment function, a refrigerator compartment function, a quick freezer compartment function, a thawing chamber function, and a rapid freezer compartment function.

″ 6 ″ is the main cooler and ″ 7 ″ is the main fan for cold air circulation. These are installed behind the rear partition board 2a of the freezer compartment 2, and this main cooler 6 and the main fan 7 The cold air is supplied to the above-mentioned freezing chamber 2, the function switching chamber 3, the chilled chamber 4, and the refrigerating chamber 5 through the cold air supply duct 8.

In the above-described function switching chamber 3, "9" is a cold air supply port, and the cold air supply port 9 includes a damper drive device 11 having a damper motor (not shown) for the damper plate 10 to open and close it. It is installed together.

"12" is an auxiliary fan for freezing and quick freezing, "13" is an auxiliary cooler for quick freezing, and "14" is a thawing heater.

Next, in FIG. 5 showing the refrigerating cycle, reference numeral 15 denotes an inlet portion of the condenser 16, the capillary tube 17, the flow path control solenoid valve 18 sequentially at its discharge port 15a as a compressor. 18a) and one outlet part 18b, the capillary tube 19, and the above-mentioned main cooler 16 are connected in order, and the outlet width of the main cooler 6 is connected to the inlet 15b of the compressor 15. I'm making it.

The auxiliary cooler 13 and the capillary tube 20 described above are sequentially connected between the other outlet portion 18c of the solenoid valve 18 described above and the inlet portion of the main cooler 6. .

On the other hand, Fig. 1 shows a control circuit relating to the function switching of the above-described function switching chamber 3, in which ″ 21 ″ denotes a freezer compartment formed so that a freezer compartment function setting switch 22 is an automatic return type push switch. Input circuit for function, ″ 23 ″ is likewise the input circuit for child compartment function formed with the chilled seal function setting switch 24 which is an automatic return type push switch, and ″ 25 ″ is likewise the refrigerator compartment function setting which is an automatic return type push switch Input circuit for refrigerator compartment function formed with switch 26, " 27 " is input circuit for quick freezer compartment function formed with quick freezer function setting switch 28, which is an automatic return push switch, " 29 " Input circuit for thawing room function, which is configured to have a thawing room function setting switch 30 as a push switch of the same type, " 31 " A refrigerating chamber function select switch input for rapid refrigerating chamber is formed so that the function (32) circuit.

Each of these input circuits 21, 23, 25, 27, 29, and 31 are each output signals S ₂₁ , S ₂₃ , S ₂₅ , and ( S ₂₇ ), (S ₂₉ ), and (S ₃₁ ) are set to a high level, and when each switch is turned ON, the respective output signal is changed to a low level so that each inverter ( 33a), 34a,... It gives to 38a.

가 고레벨 상태에 있을때에 클럭단자 CK에 각 인버어터(33a),(34b),(35a)에서 고레벨의 신호가 부여되면, 그 동작개시에 따라 셋트 출력단자 Q를 고레벨로 변화시키는 동시에 리셋트 출력단자

를 저 레벨로 변화시키며, 그리고, 리셋트 단자

가 저 레벨로 변화되면, 리셋트되어 셋트 출력단자 Q 및 리셋트 출력단자

의 레벨 상태를 반전시킨다.″ 33 ″ is a flip-flop circuit for maintaining the freezer function setting state, ″ 34 ″ is a flip-flop circuit for maintaining the chilled room function setting state, and ″ 35 ″ is a flip-flop circuit for maintaining the refrigerator compartment function setting state, respectively. Terminals

When the high level signal is applied to each of the inverters 33a, 34b, and 35a when the clock terminal CK is in the high level state, the set output terminal Q is changed to the high level according to the start of operation, and the reset output is performed. Terminals

To low level, and reset terminal

Is changed to the low level, it is reset to set output terminal Q and reset output terminal.

Inverts the level state.

가 고레벨 상태에 있을때에 클럭단자 CK에 각 인버어터(36a),(37a),(38a)에서 고레벨의 신호가 부여되면, 그 동작개시에 따라 셋트 출력단자 Q를 고레벨로 변화시키는 동시에 리셋트 출력단자

를 저레벨로 변화시키며, 그리고 리셋트단자

가 저레벨로 변화되면 리셋트되어 셋트 출력단자 Q 및 리셋트 출력단자

레벨 상태를 반전시킨다.″ 36 ″ is a flip flop circuit for maintaining the quick freezer function setting state, ″ 37 ″ is a flip flop circuit for maintaining the thawing room function setting state, and ″ 38 ″ is a flip flop circuit for maintaining the rapid freezer function setting state. Set terminal

When the high level signal is applied to each of the inverters 36a, 37a, and 38a when the clock terminal CK is in the high level state, the set output terminal Q is changed to the high level according to the operation start, and the reset output is performed. Terminals

Changes to low level, and reset terminal

Is reset to low level, it is reset and set output terminal Q and reset output terminal

Inverts the level state.

에 고레벨 신호가 부여되면 그 동작 개시에 의거하여 클럭단자 CK에 부여되는 클럭펄스를 카운트하여 타임 카운트를 개시하며, 그 설정 시간의 타임 업(up)에 의해 출력단자

를 고 레벨 상태에서 저 레벨로 변화시키며, 그리고, 리셋트 단자

가 저레벨로 변화되면, 리셋트되어 출력단자

를 고레벨로 변화시킨다.″ 39 ″ is a timer circuit for controlling the end time of the end of the freezer function setting, ″ 40 ″ is a timer circuit for controlling the end time of the end time of the thawing room function setting, and 41 is a rapid freezer function setting. Is a timer circuit that controls the end time of the timer at a time, and each of the timer circuits 39, 40, and 41 has its reset terminal.

When the high level signal is applied to the clock terminal, the clock pulse applied to the clock terminal CK is counted based on the start of the operation, and the time count is started. The output terminal is output by the time up of the set time.

Changes from high level to low level, and reset terminal

When is changed to low level, it is reset and output terminal

Change to high level.

In this case, the setting time is, for example, "90" minutes.

에서의 출력신호가 도시한 바와 같은 극성(極性)인 다이오드(43a)를 통하여 인버어터(33a)에도 부여되도록 되어 있는 것이다.The above-described timer circuit 39 is connected to the above-described flip-flop circuit 37 via the AND circuit 42 as shown, in this case the characteristic of the output terminal of the timer circuit 39.

Is output to the inverter 33a via the diode 43a having the same polarity as shown.

로부터의 출력 신호가 도시한 바와 같은 극성인 다이오드(43b)를 통하여 인버어터(34a)에도 부여되도록 되어 있는 것이다.In addition, the timer circuit 40 is connected as shown to the flip-flop circuit 37, and in this case, the characteristic is that the output terminal of the timer circuit 40 is also provided.

The output signal from the inverter is also provided to the inverter 34a via the diode 43b having the same polarity as shown.

로부터의 출력신호가 도시한 바와 같은 극성인 다이오드(43)를 통하여 전술한 인버어터(35a)에도 부여되도록 되어 있는 것이다.In addition, the timer circuit 41 is connected to the flip-flop circuit 38 via the AND circuit 44 as shown, and in this case, the characteristic of the output terminal of the timer circuit 41 is also shown.

The output signal from the inverter 35 is supplied to the inverter 35a described above via the diode 43 having the same polarity as shown.

Denoted at 45 is a thawing temperature detection circuit provided with a temperature sensor 45a for detecting the temperature of the thawed food, a comparator 45b, and the like, which is used when the detected temperature exceeds the upper limit of a certain thawing temperature. S ₄₅ ) is set to the low level (heater driving stop circuit), and when the lower limit is lowered, the output signal S ₄₅ is set to the high level (heater driving signal).

″ 46 ″ is a function switching chamber temperature detection circuit formed such that a temperature sensor 46a for detecting the temperature of the function switching chamber 3, a comparator 46b, a transistor 46c, and the like is used. When the detection temperature exceeds the refrigerator compartment function temperature reference value or the chilled seal function temperature reference value as the detection temperature reference value, the refrigerating compartment function reference value and the chilled room function temperature reference value, which is lower than this, are alternatively selected. The output signal S ₄₆ is set at the low level (damper release command signal), and when lower, the output signal S ₄₆ is set at the high level (damper close command signal).

″ 47 ″ is a damper control circuit composed of an exclusive OR circuit, and the input terminal I ₀ has a low level damper open state determination signal S ₁₁ L or a high level damper closed state determination signal S ₁₁ h from the above-described damper drive device 11. Is given.

48, 49, 50, 51 and 52 are relay coils, among which the relay coil 48 is for driving the compressor 15 and the main fan 7 described above, and the relay coil 49 is the solenoid valve 18 described above. For driving, the relay coil 50 drives the damper motor (not shown) in the damper driving device 11 described above, and the relay coil 51 drives the auxiliary fan 10 described above, and the relay coil. Reference numeral 52 is for driving the heater 14 for thawing described above.

In addition, the above-described solenoid valve 18 operates to close one outlet 18b and open the other outlet 18c by driving the relay coil 49 by energization.

In addition, the damper motor described above is of a type that rotates in one direction, so that the damper drive device 11 is configured such that the damper plate 10 is opened from the closed position or closed from the open position by the rotational drive of the damper motor. have.

And it outputs the respective determination already described damper open state signal S ₁₁ ℓ (low level) and a damper closed position determination signal S ₁₁ h (high level) in each of a closed position and an open position of the damper plate 10.

″ 53 ″ is an output terminal for outputting a freezer compartment temperature detection signal S ₂ relating to the inside of the freezer compartment ₂ , and the output terminal 53 is provided from a freezer compartment temperature detection circuit for detecting the internal temperature of the freezer compartment 2, although not shown. The freezer compartment temperature detection signal S ₂ is provided to output it, and in this case, the freezer compartment temperature detection signal S ₂ becomes a high level when the detection temperature exceeds the reference temperature and becomes a low level when it is lower. . ″ 54 ″ is a reset circuit formed with a resistor, a capacitor and a diode. The reset circuit 54 resets the flip-flop circuits 33, 34, and 35 described above when the power supply is cut off. It also functions as a reward. 55a, 55b... 55e denotes each of the relay coils 48, 49,... It is an inverter that is a driver for 52.

Here, the above-described input circuits 21, 23, 25, 27, 29, 31, flip-flop circuits 33 to 38, and timer circuits 39 to ( 41, the thawing temperature detection circuit 45, the function switching room temperature detection circuit 46, the damper control circuit 47, the output terminal 53, and the reset circuit 54 will be described later. The inverters 55a, ... described above via a logic element, a diode, and the like. In accordance with 55e, relay coil 48,... It is connected to 52 as shown in FIG.

The operation in the above-described configuration will be described together with the operation of the circuit shown in FIG.

)는 고레벨이다.In the present state of FIG. 1, the respective output signals S ₂₁ , S ₂₃ , and S ₂₅ from the respective input circuits 21, 23, 25, 27, 29, and 31 are illustrated. ), (S ₂₇ ), (S ₂₉ ), and (S ₃₁ ) are each at a high level, and the output signal S ₅₄ from the reset circuit ₅₄ is also at a high level, and each flip-flop circuit 33,. 38 is reset so that each set output terminal Q is at a low level, and each reset output terminal (

) Is high level.

Therefore, each of the AND circuits 42, 44, and 56 has the output signals S ₄₂ , S ₄₄ , and S ₅₆ at the low level.

First, the case where the function switching room 3 is set to the freezer function will be described.

In this case, as shown in FIG. 6, the solenoid valve 18 is stopped (refrigerant flows in the direction of arrow A of FIG. 5), and the compressor 15 and the main fan 7 are outputted. The drive control is performed by the freezer compartment temperature detection signal S ₂ from the terminal 53, and the damper plate 10 is in a fully open state, and the auxiliary fan 12 and the heater 14 are in a driving stop state.

)에 부여되는 동시에 AND회로(59)를 거쳐서 플립플롭회로(35)의 리셋트 단자(

)로 부여된다.That is, in detail, when the freezer compartment function setting switch 22 is set to ON to set the freezer compartment function, the signal S ₂₁ output from the input circuit ₂₁ becomes low level, and the signal S ₂₁ is the inverter. Inverted to a high level by 33a and applied to the clock terminal CK of the flip-flop circuit 33, and the output signal S ₂₁ is passed through the AND circuit 58 in the low level state to the flip-flop circuit 34. Reset terminal of

) And reset terminal of flip-flop circuit 35 via AND circuit 59

) Is given.

)를 저 레벨로 변화시킴으로 이 저레벨 신호에 의해서 냉동실 기능 표시용의 발광 다이오우드(60)가 점등되는 동시에 이 저레벨 신호가 NAND회로(64)에 부여된다.In this case, the flip-flop circuit 33 uses this reset output terminal (

The low level signal is supplied to the NAND circuit 64 while the light emitting diode 60 for displaying the freezer compartment function is turned on by the low level signal.

When the input of the OR circuit 66 of the input type is seen here, since the output signals S ₄₂ and S ₄₄ from the AND circuits 42 and ₄₄ are together at a low level, the output of the OR circuit 66 is output. Depending on the freezer compartment temperature detection signal S ₂ from the terminal 53, the relay coil 44 is energized / disconnected according to the freezer compartment temperature detection signal S ₂ , ie, the compressor 15 and the main fan 7. The drive control is performed in accordance with the temperature of the freezer compartment 2.

In addition, when the input of the inverter 55b is seen, the output signal S ₄₂ of the AND circuit ₄₂ is at a low level, so the output of the inverter 55b is at a high level, and the relay coil 49 is disconnected, that is, the solenoid valve 18. ) Becomes a driving stop state.

As a result, the refrigerant flows in the direction of the arrow of FIG. 5 in the refrigeration cycle (does not flow in the direction of arrow B).

The main cooler 6 therefore contributes to the cooling of the air in the refrigerator.

)로부터 항상 저레벨 신호가 입력되어 있으므로 이 NAND회로(64)에 있어서는 NOR회로(69)의 출력 및 해동온도 검출회로(46)로부터의 출력에 관계없이 고레벨로 된다.Next, when the input / output of the NOR circuit 69, the NAND circuits 64, 65, and the inverter 70 is viewed, the NAND circuit 64 has the reset output terminal of the above-described flip-flop circuit 33 (

Since the low level signal is always input from the NAND circuit 64, the NAND circuit 64 becomes a high level irrespective of the output of the NOR circuit 69 and the output from the thawing temperature detection circuit 46.

The output of the inverter 70 is at a high level because the output of the set output terminal Q of the flip-flop circuit 37 is at a low level, and therefore the output of the NAND circuit 65 is always at a low level.

As a result, the low level signal is always input to the input terminal I ₁ of the damper control circuit 47.

If the high level damper closed state determination signal S ₁₁ h (the damper plate 10 is closed) is applied to the input terminal I ₀ of the damper control circuit 47, the output is set to high level. When the high level signal is applied to the inverter 55c, the relay coil 50 is energized and driven to operate the damper drive device 11 to open the damper plate 10.

When the low level damper open state determination signal S ₁₁ L (the damper plate 10 is open) is applied to the input terminal I ₀ of the damper control circuit 47, a low level signal is output. The coil 50 is in a disconnected state, and therefore the damper plate 10 is always in an open state in the freezer function setting state.

On the other hand, when the input / output of the OR circuit 68 is seen, since the inputs are all at low level, the output is at the low level. As a result, the relay coil 51 is in the disconnection state, that is, the auxiliary fan 12 is in the driving stop state. When the input of the inverter 55e is seen, the relay coil 52, that is, the heater 14, is in the driving stop state because the output signal S ₅₆ of the AND circuit 56, which is its input, is at a low level.

Next, the case where the function switching room 3 is set to the chilled room function will be described. In this case, as shown in FIG. 16, the compressor 15 and the main fan 7 are driven and controlled by the freezer compartment temperature detection signal S ₂ from the output terminal 53, and the solenoid valve 18 ) Is stopped (the refrigerant flows in the direction of arrow A in FIG. 5).

)에 저 레벨 신호가 부여되어서 리셋트 된다.The damper plate 10 is controlled to open and close by an output signal S ₄₅ (signal according to the chilled function temperature reference value) from the function switching temperature detection circuit 46, and the auxiliary fan 12 and the heater 14 are driven stop. do. That is, in detail, when the chilled seal function is set by operating the chilled seal function setting switch 24 to ON, the output signal 23 of the input circuit 23 becomes low level by operating this ON so that the flip-flop circuit 34 To the clock terminal CK, is inverted by the inverter 34a, and a level signal is applied to the clock terminal CK. The reset terminal of the flip-flop circuits 33 and 35

) Is given a low level signal and is reset.

)를 저 레벨로 변화시키고 이것으로 칠드실 기능 표시용의 발광 다이오드(61)가 점등된다.Thus, the flip-flop circuit 34 has its reset output terminal (

) Is changed to the low level, and the light emitting diode 61 for the function of the chilled seal is turned on.

Also in this case, the output signals S ₄₂ , S ₄₄ , and S ₅₆ of the AND circuits ₄₂ , ₄₄ , and ₅₆ are together at the low level so that the set output terminal Q of the flip-flop circuit 37 is low. Level, the relay coil 48 is in the disconnected state, that is, the compressor 15 and the main fan 7 are stopped as described above, and the relay coil 49 is also in the disconnected state, that is, the solenoid valve 18 is also driven. In addition, the relay coil 51, that is, the auxiliary fan 12 and the relay coil 52, that is, the heater 52 are also cut off and the driving is stopped.

)의 출력이 고 레벨이므로 NAND회로(64)의 세개의 입력단자 중 두개가 고 레벨로 된다.In addition, when the energization control of the damper motor-driven relay coil 50 is seen, the output signal S _{42 of the} AND circuit ₄₂ and the output signal S ₄₄ of the AND circuit ₄₄ are both low as described above. Level, the output of the NOR circuit 69, the level, and the reset output terminal of the flip-flop circuit # 3.

) Output is high level, two of the three input terminals of the NAND circuit 64 is at a high level.

Therefore, the axial force of the NAND circuit 64 is a function jeonhwansil temperature detection circuit 46 depending on the output signal (S ₄₆₎ from the signal is given to one input terminal of the inverting output to the NAND circuit (65).

At this time, the signal from the set output terminal Q of the flip-flop circuit 37, which is applied to the NAND circuit 65 via the inverter 70 to the input terminal on the other side, has a low level (output of the inverter 70). High level), the output change of this NAND circuit 65 will eventually depend on the output signal S ₄₆ of the function switching room temperature detection circuit 46, so that the damper control circuit 47 has a function switching room temperature detection circuit 46. The signal corresponding to the output signal S ₄₆ of the signal is applied to the inverter 55c which is a driver of the relay coil 50, thereby controlling the relay coil 50, that is, the damper motor, through the current.

)의 출력이 저 레벨이므로 OFF 상태에 있어서 온도 기준 값이 트랜지스터(46c)의 ON의 경우(냉장실 기능의 경우)보다도 낮아지게 된다.In this case, the transistor 46c in the function switching room temperature detection circuit 46 is a reset output terminal of the flip-flop circuit 35 (

), The output is low level, the temperature reference value in the OFF state is lower than when the transistor 46c is ON (in the case of the refrigerator compartment function).

When setting the refrigerator compartment function, the control form at this time is the same as the case of the above-mentioned chilled seal function as FIG. 6 knows.

)의 출력이 저 레벨로 되므로 냉장실 기능 표시용의 발광 다이오드(62)가 점등되며 또한 트랜지스터(46c)가 ON으로 되어 기능 전환실 온도 제어회로(46)에 있어서의 온도 기준값이 칠드실 기능의 경우보다 약간 높아진다.However, the low level of the output of the set output terminal Q of the flip-flop circuit 35 and the reset output terminal (

Since the light output diode 62 for the display of the refrigerator compartment function is turned on and the transistor 46c is turned on, the temperature reference value in the function switching chamber temperature control circuit 46 is lower than that of the chilled chamber function. Slightly higher

Next, the case where the function switching chamber 3 is set to the rapid freezing chamber function will be described.

In this case, as shown in Fig. 6, the compressor 15 and the main fan 7 are always driven so that the solenoid valve 18 is driven (the refrigerant flows in the direction of arrow B in Fig. 5) and the damper plate 10 ) Is fully open so that the auxiliary fan 12 and the heater 14 are driven off.

)가 저 레벨로 된다.That is, in detail, when the quick freezer compartment function setting switch 28 is set to ON and the quick freezer compartment function is set, the output signal S ₂₇ from the input circuit ₂₇ becomes low level and passes through the inverter 36a. The high level signal is applied to the clock terminal CK of the flip-flop circuit 36, the set output terminal Q is brought to the high level, and the reset output terminal (

) Becomes low level.

)로 부여되고 이것으로서 타이머 회로(39)는 그 클럭단자(CK)로 부여되는 주파수 펄스에 따라서 타임 카운트를 개시한다.As a result, the output signal S ₄₂ of the AND circuit 42 becomes high level, and the high level output signal S ₄₂ is reset to the timer circuit 39.

In this way, the timer circuit 39 starts the time count in accordance with the frequency pulse applied to the clock terminal CK.

The high-level output signal S ₄₂ of this AND circuit _{42 is} supplied to the NOR circuit 69 and is also provided to the inverter 55b which is a driver for the relay coil 49, and also to the NOR circuit 66. Is given.

Thus, the high level output signal S ₄₂ is applied to the NOR circuit 69 so that the output of the NOR circuit 69 is always at a low level, so that the output of the NAND circuit 64 is always at a high level, and thus the NAND circuit ( One input terminal of 65) is always at a high level.

In this case, since the output of the inverter 70 applied to the other input terminal of the NAND circuit 65 is high level under the condition that the thawing room function is not set, the NAND circuit 65 always outputs a low level signal. Thus, the damper control circuit 47 always outputs a low level signal after the damper plate 10 is opened to cut off the relay coil 50, that is, the damper motor, thereby maintaining the damper plate 10 in an open state. .

In addition, the output of the OR circuit 66 is always at a high level because the above-described output signal S ₄₂ input to it is at a high level. Therefore, the relay coil 48 is always energized regardless of the freezer compartment temperature detection signal S ₂ . That is, the compressor 15 and the main fan 7 are always driven.

Furthermore, since the high level output signal S ₄₂ is also applied to the inverter 55b which is the driver of the relay coil 49, the relay coil 49 is energized, that is, the solenoid valve 18 is driven. As a result, the function switching chamber 3 is cooled by the cooling action of the main cooler 6 and the subcooler 13.

In addition, since the output of the OR circuit 68 is at a low level, the auxiliary fan 12 is stopped from driving, and since the output signal S ₅₆ of the AND circuit ₅₆ is at a low level, the heater 14 is disconnected from the drive and is stopped. .

)를 저 레벨로 변화시킨다. 이 저 레벨 신호는 플립플롭 회로(36)의 리셋트 단자(

)로 부여되는 동시에 다이오드(43a) 및 인버어터(33a)를 거쳐서 플립플롭 회로(33)의 클럭단자(CK)로 부여된다.Then, when the timer circuit 39 is timed at the set time (in this case, "90 minutes"), its output terminal (

To low level. This low level signal is connected to a reset terminal of the flip-flop circuit 36 (

Is applied to the clock terminal CK of the flip-flop circuit 33 via the diode 43a and the inverter 33a.

Thus, since the high level signal is applied via the inverter 33a as the input of the flip-flop circuit 33, the flip-flop circuit 33 is operated and flip-flop as in the case where the freezer function setting switch 22 is operated to ON. Since 36 is reset, the output signal S ₄₂ of the AND circuit 42 goes low and the timer circuit 39 is reset by the output signal S ₆₄ . As a result, the input / output state of each part is the same as in the case of setting the freezer compartment function.

As a result, the freezer compartment function is automatically set when the quick freezer compartment control is terminated.

Next, the case where the function switching chamber 3 is set to the thawing chamber function will be described. In this case, as shown in FIG. 6, the driving of the compressor 15 and the main fan 7 is performed by the freezer compartment temperature detection signal S _2. Control of the solenoid valve 18, the damper plate 10 is completely closed, the auxiliary fan 12 is driven, and the driving of the heater 14 is controlled by the thawing temperature detection signal S ₄₅ . do.

That is, in detail, when the freezer compartment function is set by operating the thawing compartment function setting switch 30 to ON, the output signal S ₂₉ of the input circuit ₂₉ becomes the low level, so that the high level is passed through the inverter 37a. A signal is applied to the clock terminal CK of the flip-flop circuit 37, whereby the flip-flop circuit 37 changes the output from its set output terminal Q to a high level.

)로 부여되는 동시에 AND회로(56)의 한쪽의 입력단자 및 인버어터(70) 및 OR회로(68)로 부여된다.This high level output signal is provided with a reset terminal (

), And to one input terminal of the AND circuit 56 and the inverter 70 and the OR circuit 68.

)는 고 레벨) 또 인버터(70)의 출력이 저 레벨로 변화되므로 NAND회로(65)의 출력은 항상 고 레벨로 되며 따라서 댐퍼판(10)이 폐쇄상태에 있을 때에는 댐퍼 제어회로(47)로 부터 저 레벨 신호가 출력되고 개방상태에 있을 때에는 고 레벨 신호를 출력해서 그 댐퍼판(1)의 폐쇄동작에 의해서 저 레벨 신호를 출력함으로써 댐퍼판(10)을 항상 완전히 폐쇄하는 상태로 한다.The timer circuit 40 then starts the time count (output terminal (

High level) and the output of the inverter 70 changes to a low level, so that the output of the NAND circuit 65 is always at a high level, and therefore, when the damper plate 10 is in the closed state, the damper control circuit 47 When the low level signal is outputted and is in the open state, the high level signal is output and the low level signal is output by the closing operation of the damper plate 1 so that the damper plate 10 is always completely closed.

In addition, since the output of the OR circuit 68 is always at a high level, the relay coil 51, that is, the auxiliary fan 12 is energized.

In addition, since the output of the AND circuit 56 depends on the output signal S ₄₅ from the thawing temperature detection circuit 45, the relay coil 52, that is, the heater 14, outputs the thawing temperature detection circuit 45. Therefore, the signal (S ₄₅₎ is cylindrical unit cell control.

In this case, since the output signal S ₄₂ from the circuit ₄₂ and the output signal S ₄₄ of the AND circuit ₄₄ are at a low level, the output of the OR circuit 66 is output from the output terminal 53. Depending on the freezer compartment temperature detection signal S ₂ , the relay coil 48, that is, the compressor 15 and the main fan 7, is controlled before and after the freezer compartment temperature detection signal S ₂ .

In addition, the relay coil 49 is disconnected because the output signal S ₄₄ of the AND circuit ₄₄ is at a low level, that is, the solenoid valve 18 is brought into a driving stop state.

Due to such control, the function switching room 3 becomes the thawing room function.

)를 저 레벨로 변화시키고 이 저 레벨 신호에 의해서 플립플롭 회로(37)가 리셋트되고 이것으로 인해서 타이머 회로(40)가 리셋트된다.When the timer circuit 40 is timered, its output terminal (

) Is changed to the low level and the flip-flop circuit 37 is reset by this low level signal, which causes the timer circuit 40 to be reset.

)로 부터의 저 레벨 신호가 다이오드(43b) 및 인버어터(33a)를 거치고 고 레벨 신호로써 플립플롭 회로(34)의 클럭단자(CK)로 보여되며 이 플립플롭 회로(34)의 리셋트 출력단자(

)가 저 레벨로 변화한다. 이것으로써 이 플립플롭 회로(34)는 칠드실 기능이 설정되었을 경우와 동일하게 동작한다.In addition, the output terminal of the timer circuit 40 (

The low level signal from XV is passed through the diode 43b and the inverter 33a and is shown as the clock terminal CK of the flip-flop circuit 34 as the high level signal and the reset output of the flip-flop circuit 34 is obtained. Terminals(

) Changes to the lower level. As a result, this flip-flop circuit 34 operates in the same manner as when the chilled seal function is set.

In addition, the output terminal Q changes to the low level by the reset of the flip-flop circuit 37, and accordingly, the output of the AND circuit 56 becomes low level. As a result, the input / output states of the respective parts are the same as in the case of the chilled seal function setting. As can be seen from this fact, when the thawing room function control is completed, the chilled room function is automatically set.

Next, the case where the function switching chamber 3 is rapidly set to the refrigerator compartment function will be described. In this case, as shown in FIG. 6, the compressor 15 and the main fan 7 are driven, the solenoid valve 18 is stopped and the damper plate 10 is fully open, and the auxiliary fan ( 12 is driven and heater 14 is driven off.

)의 출력을 저 레벨로 변화시킨다.That is, in detail, when the rapid refrigerating chamber setting switch 32 is operated to ON, the output signal S ₃₁ of the input circuit ₃₁ becomes the low level, so that the high level signal passes through the inverter 38a to the flip-flop circuit ( 38 is supplied to the clock terminal CK, whereby the flip-flop circuit 38 changes the output of the set output terminal Q to a high level and at the same time the reset output terminal (

Change the output of) to low level.

)로 부여되는 동시에 NOR회로(69) 및 OR회로 (68) 및 OR회로(66)으로 부여된다.As a result, the output signal S ₄₄ of the AND circuit 44 becomes high level (the output signal S ₄₂ of the AND circuit ₄₂ remains in the low level state), and this high level output signal S ₄₄ becomes high. Is the reset terminal of the timer circuit 41 (

And NOR circuit 69 and OR circuit 68 and OR circuit 66.

The timer circuit 41 starts time counting (output terminal Q remains at a high level).

Since the OR circuit 66 is always provided with the above-described high level output signal S ₄₄ , the compressor 15 and the main fan 7 always output the high level signal regardless of the freezer compartment temperature detection signal S ₂ . Driven.

Since the OR circuit 68 is also provided with this high level output signal S ₄₄ , the OR circuit 68 always outputs a high level signal so that the auxiliary fan 12 is driven. Since the output signal S ₄₂ of the AND circuit ₄₂ is at a low level, the solenoid valve 18 is stopped.

Since the output signal S ₅₆ of the AND circuit ₅₆ is also at a low level, the heater 14 is also driven to stop.

In addition, since the output of the NAND circuit 64 is always at a high level, and the output of the inverter 70 is also at a high level in a condition in which the thawing room function is not set, the NAND circuit 65 always outputs a low level signal, thereby damping the damper plate 10. Always remains fully open.

By such control, the function switching chamber 3 is cooled rapidly.

)를 저 레벨로 변화시키므로 그 저 레벨 신호에 의해서 플립플롭 회로(38)가 리셋트되어서 AND회로(44)의 출력이 저 레벨로 되며 타이머 회로(41)가 리셋트된다.Then, when the timer circuit 41 has a timer, its output terminal (

) Is changed to the low level, the flip-flop circuit 38 is reset by the low level signal, the output of the AND circuit 44 is brought to the low level, and the timer circuit 41 is reset.

)로 부터 저 레벨 신호가 출력됨으로써 다이오드(43c) 및 인버터 (35a)를 거쳐서 플립플롭 회로(35)의 클럭단자(CK)에 고 레벨 신호가 부여된다.Output terminal of the above-described timer circuit 41 (

By outputting the low level signal from the high level signal, the high level signal is applied to the clock terminal CK of the flip-flop circuit 35 via the diode 43c and the inverter 35a.

)를 고 레벨로 변화시킨다.As a result, the flip-flop circuit 35 changes its set output terminal Q to a high level and at the same time reset output terminal (

) To a higher level.

In other words, the refrigerating chamber function is set.

As can be seen from this fact, when this rapid refrigerating chamber function control is finished, the refrigerating chamber function is automatically set.

Thus, according to this embodiment, in addition to the freezer compartment function, the chilled compartment function, and the refrigerating compartment function, the function switching chamber 3 is set to any one function of the rapid freezer compartment function, the thawing chamber function, and the rapid freezer compartment function, and the set function is set to the compressor 15. And by the drive control of the main fan 7, the solenoid valve 18, the damper plate 10, the auxiliary fan 12, and the heater 14, diversification of the function switching chamber can be achieved. Due to this, the food can be cooled in a short time, and the frozen food can be thawed sufficiently, and also the rapid refrigeration of beverages, etc. can be very convenient in terms of function.

In addition, when the freezer function is completed after the quick freezer function is set, the freezer function can be automatically set. Therefore, the frozen food can be kept at the proper temperature after the freezer function is finished. It is possible to eliminate the possibility of food being deteriorated, unlike when the food is stored in the chilled room function or the refrigerator function.

In addition, when the control of the thawing room function is completed after setting to the thawing room function, the chilled room is automatically set so that the food after thawing can be maintained at a temperature suitable for the food after thawing, so that the freezing room function or the refrigerating room function after thawing Unlike this case, the risk of deterioration of food can be eliminated.

In addition, when the control of the rapid refrigerating chamber function is completed after the rapid refrigerating chamber function is set, the refrigerating chamber function is automatically set so that the frozen food (drinks, etc.) can be kept at a suitable temperature. Unlike the case where the function or the chilled seal function is set, it is possible to eliminate the risk of deterioration of food and drink.

Moreover, in the above-described examples, the end circuits of the quick freezer function, the thawing room function, and the quick freezer function are controlled by a timer circuit, respectively, but this time the temperature of the food is detected by, for example, an infrared sensor or the like. You may control it.

The thawing chamber function control is not thawed by a heater but may be thawed by a high frequency.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

As is apparent from the above description, the present invention can diversify functions by selecting functions such as a freezer compartment function, a chilled compartment function, and a refrigerator compartment function in addition to the freezer compartment function, the chilled compartment function, and the refrigerating compartment function. It can be done very conveniently, and at the same time, it is possible to achieve such diversification while preventing the deterioration of food.

Claims (1)

In the refrigerator which can set the function switching room to any of the freezer function, the chilled room function, and the refrigerating chamber function, and controls the above-mentioned function switching room temperature to the set function, the refrigerator also controls the above-mentioned function switching room in the quick freezer function and the thawing room. When the above-mentioned quick freezer function is set by the setting switches 28, 30 and 32 which can set one of the function and the quick freezer function, and the control of the quick freezer function is completed, the freezer function is executed. A control circuit for automatically setting the chilled room function when the above-mentioned thawing room function is set and the control of the thawing room function is completed, and the refrigerator compartment function automatically when the above-mentioned rapid freezer function is set and the control of the quick freezer function is completed. Refrigerator comprising a.

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