JPH0524423B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is of a forced draft type and uses electrical input to adjust the amount of cold air to a refrigerator compartment and a third compartment that is cooled independently of the refrigerator compartment. The present invention relates to a refrigerator equipped with a damper opening/closing device.

Conventional configuration and its problems A conventional example will be explained with reference to FIGS. 8 to 14.

Reference numeral 1 denotes a refrigerator body, which is divided by a partition wall 2 into a freezing compartment 3 at the top and a refrigerating compartment 4 at the bottom. 5
is a substantially airtight third chamber provided at the top of the refrigerator compartment 4 and cooled independently of the refrigerator compartment 4, with the partition wall 2 serving as the top plate, and surrounding by a heat insulating material 6 and a heat insulating door 7. It is constructed as an independent cold room that is mainly maintained at a lower temperature than the refrigerator room 4. 8 is a cooler for the refrigeration cycle, and 9 is a blower for forced ventilation. Reference numeral 10 denotes a control panel provided at the entrance of the refrigerator compartment 4, which includes a damper opening/closing control device 11 (hereinafter referred to as electric damper 11) for the refrigerator compartment that adjusts the amount of cold air flowing into the refrigerator compartment 4 according to electrical input.
and a third chamber damper opening/closing device 12 (hereinafter referred to as electric damper 1) that adjusts the amount of cold air flowing into the third chamber 5.
2), a discharge passage 13 and a discharge port 14 for discharging cold air to the refrigerator compartment 4, and a discharge passage 15 and a discharge port 16 for discharging cold air to the third chamber 5.
It is equipped with 17 is a ventilation duct having one end opened on the discharge side of the blower 9 and the other end communicating with a control panel 10 provided at the entrance of the refrigerator compartment;
It is branched into two directions by a branch port 18, and one side is opened facing the electric damper 11 for the refrigerator compartment,
The other end is configured to open facing the electric damper 12 for the third chamber.

Next, to explain the details of the electric dampers 11 and 12, 19 and 19' are solenoids;
Damper flaps 0 and 20' are operated by the solenoids 19 and 19' to open and close the cold air passage. 21 and 21' are damper cases, with an air passage section 21a at the top and mechanical sections 21b and 21 at the bottom.
forming b′. Reference numerals 22 and 22' denote rods that push up the damper flaps 20 and 20' in the opening direction, and pass through a part of the damper cases 21 and 21' to the air passage parts 21a and 21a' and the mechanical parts 21b and 2.
1b', and its tip is connected to the air passage sections 21a, 21.
The damper flap 2 whose upper end is pivotally supported by a'
It is in contact with a part of the lower surface of 0 and 20'. 23,
A plunger 23' is connected to the rods 22, 22', and is inserted into the inner core of the solenoids 19, 19' housed in the mechanical parts 21b, 21b' to move up and down. Reference numerals 24 and 24' denote springs, which normally bias the plungers 23 and 23' downward. Further, 25 and 25' are springs that bias the damper flaps 20 and 20' in the closing direction.

Reference numerals 26, 27, and 28 are suction ports for the freezing compartment 3, the refrigerator compartment 4, and the third compartment 5, which are opened in the partition wall 2, respectively. suction passage 30 for use, suction passage 31 for refrigerator compartment,
It communicates with the lower end surface of the cooler 8 via a third chamber suction passage 32 . 33, 34, 3
Reference numeral 5 designates temperature detectors such as thermistors for detecting the temperatures in the freezer compartment, refrigerator compartment, and third room, respectively.

With this configuration, the air cooled by the cooler 8 is forced into the freezer compartment 3 by the blower 9, and is also supplied to the refrigerator compartment 4 and the third compartment 5 via the electric dampers 11 and 12. ing.

Next, the control circuit will be explained.

36 is a compressor of the refrigeration cycle, which is connected in parallel with the blower 9 and then connected to the power source via a relay contact 37. Also, electric damper 1 for refrigerator room
The solenoid 19 of No. 1 is connected in series with the relay contact 38 and then connected to the power source, and the solenoid 19' of the electric damper 12 for the third chamber is connected in series with the relay contact 39 and then connected to the power source. has been done.

Reference numeral 40 denotes a freezer temperature control device, which includes a temperature detector 33 such as a thermistor, resistors R ₁ , R ₂ , R ₃ , a comparator circuit including a comparator 41, a transistor 42, and a relay coil 37'. The output of is connected to the base of transistor 42. Further, an attraction relay coil 37' for opening and closing the relay contact 37 is connected to the collector of the transistor 42. Reference numeral 43 denotes a damper opening/closing control device for the refrigerator compartment, which includes a temperature detector 34 such as a thermistor for the refrigerator compartment, resistors R ₄ , R ₅ , R ₆ , a comparator 44 and a transistor 45, and a relay coil 38'. The output of 44 is connected to the base of a transistor 45, and the collector of the transistor 45 is connected to the relay contact 3.
A suction relay coil 38' that opens and closes 8 is connected. 46 is a damper opening/closing control device for the third chamber, and a temperature sensor 3 such as a thermistor for the third chamber.
5, resistors R ₇ , R ₈ , R ₉ , a comparator 47, a transistor 48, and a relay coil 39'; the output of the comparator 47 is connected to the base of the transistor 48;
A suction relay coil 39' for opening and closing the relay contact 39 is connected to the collector.

In such a configuration, if the temperature of the freezing compartment 3 is higher than a predetermined value during normal operation, the temperature sensor 3 of the freezing compartment
The resistance value R _TH1 of 3 has become smaller, and this resistance value
The potential at point A, which is determined by R _TH1 and resistor R ₁ , is higher than the potential at point B, which is determined by resistors R ₂ and R ₃ , and the output of comparator 41 becomes "H", so transistor 42 is turned on. Then, the relay coil 37' becomes conductive. Then, the relay contact 37 is closed, and the compressor 36 and the blower 9 are operated to cool the freezer compartment 3, refrigerator compartment 4, and third compartment 5. After that, when the freezer compartment 3 is cooled down to a certain temperature, the resistance value R _TH1 of the temperature sensor 33 of the freezer compartment 3 increases, and the A potential becomes smaller than the B potential, so the comparator 41 generates an "L" signal. do. For this reason, the transistor 42 is turned OFF, the power supply to the relay coil 37' is cut off, and the relay contact 37 is opened to open the compressor 36,
The blower 9 stops.

On the other hand, regarding the temperature control of the refrigerator compartment 4, when the temperature of the refrigerator compartment 4 is higher than a predetermined value, the resistance value R _TH2 of the temperature sensor 34 of the refrigerator compartment 4 becomes smaller.
The potential at point C determined by resistance value R _TH2 and resistance R ₄ is
The voltage becomes higher than the potential at point D determined by the resistors R ₅ and R ₆ , and the output of the comparator 44 becomes "H", so the transistor 45 is turned on. Then, the relay coil 39' becomes conductive, closing the relay contact 39, and the solenoid 19 of the electric damper 11 for the refrigerator compartment becomes conductive, so that the damper flap 20 is opened and the refrigerator compartment 4
Cold air flows inside and is cooled. Then cold room 4
If the temperature of the refrigerator compartment temperature sensor 34 is cooled down to a constant temperature, the resistance value R _TH2 of the temperature sensor 34 in the refrigerator compartment becomes large, and the C potential becomes smaller than the D potential, so the comparator 44
The output of becomes "L", and the transistor 45 becomes "L".
Turn off. Then, conduction to the relay coil 39' is cut off and the relay contact 39 is opened, so that the conduction to the solenoid 19 is also cut off and the damper flap 22 is closed to prevent cold air from flowing into the refrigerator compartment 4. .

Also, during this time, regarding the temperature control of the third chamber 5,
When the temperature of the third chamber 5 is higher than the predetermined value, the resistance value R _TH3 of the temperature sensor 35 in the compartment is becoming smaller, and the point E determined by this resistance value R _TH3 and the resistance R ₇ is lowered. The potential becomes higher than the potential at point F determined by the resistors R ₈ and R ₉ , and the output of the comparator 47 becomes "H", so the transistor 48 is turned on.
Then, the relay coil 40' becomes conductive, closing the relay contact 40, and the solenoid 19' of the electric damper 12 for the third chamber becomes conductive, so that the damper flap 20' is opened and cold air flows into the third chamber 5. It flows in and is cooled. After that, when the temperature of the third chamber 5 is cooled to a certain temperature, the temperature sensor 3 of the third chamber 5
Since the resistance value RTH3 of the _transistor 5 increases and the E potential becomes smaller than the F potential, the output of the comparator 47 becomes "L" and the transistor 48 turns OFF. Then, conduction to the relay coil 40' is cut off and the relay contact 40 is opened, so that the conduction to the solenoid 19' is also cut off, the damper flap 20' is closed, and cold air flows into the third chamber 5. to prevent
After that, this action is repeated until the freezer compartment 3, refrigerator compartment 4,
The third chamber 5 is cooled.

However, even when the temperature of the refrigerator compartment 4 and the third compartment 5 is controlled independently, both the compressor 36 and the blower 9 are controlled by the freezer compartment temperature control device 40.
Since the operation/stop of the compressor 3 is controlled depending on the temperature behavior of the freezer compartment 3,
6 and blower 9 depending on the operating time pattern
and the pattern of temperature behavior of the third chamber 5 changes. In particular, the third chamber 5 is in a temperature range (-3 to 0°C) lower than the normal refrigeration temperature (3 to 10°C) for the purpose of preserving fresh foods such as fish and meat for a relatively long period of time without losing their freshness.
It is often used as a cold room where the temperature is maintained at a temperature of It is necessary that there be. That is, it is important that the temperature change width between when cold air enters the room and when it stops is small, but even if the temperature control of the third chamber 5 is independently controlled by the electric damper 12 as described above, However, it is not possible to control the temperature change width, and the temperature change width is controlled by the time pattern of operation and stop of the compressor 36 and the blower 9 by the freezing room temperature control device 40. An example of this will be explained with reference to FIG. 14. Both the compressor 36 and the blower 9 are repeatedly operated and stopped at the ON/OFF time of T ₁ /T ₂ , but the temperature sensor 35 in the third room
With respect to the ON/OFF temperature t ₁ /t ₂ , the temperature of the temperature detector 35 increases while the compressor 36 is stopped, and the ON temperature increases.
Even if the electric damper 12 opens when the temperature reaches t ₁ , the compressor 36 and the blower 9 are both stopped, so cold air does not flow into the third chamber 5, and the temperature sensor 35 continues to rise. continue. and compressor 36,
Cool air is supplied into the third chamber 5 for the first time when the blower 9 starts operating, and the cooling effect is performed, and the indoor temperature of the third chamber 5 depends on the ON/OFF time of the electric damper, T ₃ / _T4 is not independently controlled, but the compressor 36 and blower 9 are turned ON/
The temperature range from t3 to t4 is determined based on the OFF time, _T1 / _T2 , and the temperature range from _t3 to _t4 is determined with the indoor average temperature t as the center. There was a problem in that it was not possible to control the width of the container, which hindered the preservation of fresh food stored inside, and the intended purpose of long-term preservation could not be achieved.

OBJECTS OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to perform fine temperature control by reducing the range of temperature change in the third chamber.

Structure of the Invention In order to achieve this object, the present invention opens and closes a damper flap of a damper opening/closing device that controls the amount of cold air to the third chamber at a constant cycle regardless of whether the compressor is running or stopping. By operating the blower in synchronization with this open time, cold air is supplied to the third room in a short cycle regardless of whether the compressor is running or stopping, thereby reducing the range of temperature change.

DESCRIPTION OF EMBODIMENTS FIGS. 1 to 7 show one embodiment of the present invention.
This will be explained according to the diagram. Incidentally, the same components as those in the prior art are given the same reference numerals, and detailed explanation thereof will be omitted.

36 is a compressor of the refrigeration cycle, which is connected in series with a relay contact 49 and then connected to both ends of the power source. Reference numeral 9 denotes a blower for forced ventilation, which is connected in series with the relay contact 50 and then connected to both ends of the power supply. 19 is a solenoid for the electric damper 11 for the refrigerator compartment, which is connected in series with the relay contact 38; and 19' is a solenoid for the electric damper 12 for the third compartment, which is connected in series with the relay contact 39. and are connected to both ends of the power supply respectively. 40' is a freezing room temperature control device, which includes a temperature detector 33 such as a thermistor, resistors R ₁ , R ₂ , R ₃ ,
The comparator circuit includes a comparator 41, a transistor 42, and a relay coil 49', and the output of the comparator 41 is connected to the transistor 42.
is connected to the base of the OR circuit 51, and also connected to one input of the
It is also connected to one input of the circuit 53. An attraction relay coil 49' for opening and closing the relay contact 49 is connected to the collector of the transistor 42.

43' is a refrigerator temperature control device, which includes a comparison circuit including a temperature detector 34 such as a thermistor, resistors R ₄ , R ₅ , R ₆ and a comparator 44, and a transistor 4.
The output of the comparator 44 is connected to one input of the AND circuit 54, and the output of the AND circuit 54 is connected to the base of the transistor 45. Further, the collector of the transistor 45 is provided with a suction relay coil 38' that opens and closes the relay contact 38.
is connected.

46' is a third room temperature control device, which includes a temperature detector 35 such as a thermistor, resistors R ₇ , R ₈ , R ₉ , a comparator circuit including a comparator 47, and a transistor 4.
8. It is composed of a relay coil 39', the OR circuit 51, a transistor 55, a relay coil 50', and a pulse generator 56, and the output of the comparator 47 is connected to the input of the pulse generator 56, and the AND circuit 53, and the output of the AND circuit 53 is connected to one input of the inverter 57.
It is connected to one input of the AND circuit 54 via. The output of the pulse generator 56 is connected to the base of a transistor 48, and the collector of the transistor 48 is connected to a suction relay coil 39' for opening and closing the relay contact 39. or,
The output of the pulse generator 56 is also connected to one input of the OR circuit 51 on the other hand.
The output of is connected to the base of transistor 55. A suction relay coil 50' for opening and closing the relay contact 50 is connected to the collector of the transistor 55.

Next, the pulse generator 56 will be explained. The output of the pulse generator 56 is, for example, the time of the "H" signal is a fixed time T, the time of the "L" signal is arbitrarily changed according to the input signal, and each A pulse with a constant ON/OFF time cycle is generated as an output depending on the input signal. For example, if the third chamber 5 is not yet sufficiently cooled and needs to be cooled, the output of the comparator 47 continues to output an "H" signal, but at this time the pulse generator 56 outputs an "H" signal. At time T, a constant cycle pulse with a short "L" time is generated, and when the desired temperature range is reached and the comparator 47 is switched to "L" output, the "L" time is lengthened by one step. Then, the output is switched to a constant cycle pulse. If the temperature is still being cooled to a lower temperature even after this, the output is switched to a constant period pulse with a longer "L" time. In this way, the "L" time is adjusted in stages until cooling stops below the desired temperature range.
Conversely, for some reason, the indoor temperature tends to rise above the desired temperature range, and the comparator 47
When the signal is converted to an "H" signal, the "L" time is switched to a constant pulse period that gradually shortens the "L" time, and the "L" time is similarly adjusted until the pulse period is stabilized at the optimum pulse period. In this way, the optimum pulse period corresponding to the desired temperature range is always generated.

In this configuration, when the temperature of the freezing compartment 3 during normal operation is higher than a predetermined value, the temperature sensor 3 of the freezing compartment
The resistance value R _TH1 of 3 has become smaller, and this resistance value
The potential at point A determined by R _TH1 and resistor R ₁ becomes higher than the potential at point B determined by resistors R ₂ and R ₃ ,
Since the output of the comparator 41 becomes "H", the transistor 42 turns on and the relay coil 49' becomes conductive. Then, the relay contact 49 is closed, the compressor 36 starts operating, and the cooler 8 performs a cooling action. At the same time, one input of the OR circuit 51 becomes "H", so the output also becomes "H", turning on the transistor 55 and making the relay coil 50' conductive.
Then, the relay contact 50 is closed, the blower 9 is operated, and the air cooled by the cooler 8 is supplied to the freezer compartment 3, the refrigerator compartment 4, and the third compartment 5 for cooling.

At this time, regarding the temperature control of the refrigerator compartment 4, if the temperature of the refrigerator compartment 4 is higher than a predetermined value, the resistance value R _TH2 of the temperature sensor 34 of the refrigerator compartment 4 becomes small, and this resistance value R _TH2 and C determined by resistance R ₄
The potential at the point becomes higher than the potential at point D determined by the resistors R ₅ and R ₆ , the output of the comparator 44 becomes "H", and one input of the AND circuit 54 becomes "H".
becomes. On the other hand, at this time, the temperature of the freezer compartment 3 is higher than the predetermined temperature, and the comparator 41 of the freezer compartment temperature controller 40'
When the output of is "H", one input of the AND circuit 53 converted by the inverter 52 becomes "L", so the output of the AND circuit 53 becomes "L" regardless of the other input; Since the other input of the AND circuit 54 also becomes "H", the output of the AND circuit 54 becomes "H" and the transistor 45 turns on.
Then, the relay coil 38' becomes conductive, the relay contact 38 closes, and the solenoid 19 of the electric damper 11 for the refrigerator compartment is energized. When the solenoid 19 is energized, the plunger 23 inserted inside the solenoid is pushed upward by electromagnetic action, compressing the spring 24 and pushing up the rod 22, opening the damper flap 20 in contact with it and releasing cold air. An air passage section 21a is formed, whereby air cooled by the cooler 8 is supplied to the inside of the refrigerator compartment 4 by a forced ventilation blower 9 for cooling.

Moreover, when the temperature of the refrigerator compartment 4 is cooled to a certain temperature, the resistance value R _TH2 of the temperature detector 34 increases and the C potential becomes smaller than the D potential, so the output of the comparator 44 becomes "L" and the AND When one input of the circuit 54 becomes "L", the output of the AND circuit 54 becomes "L" regardless of the other input.
Therefore, the transistor 45 is turned off. Then, the conduction of the relay coil 38' is cut off, the relay contact 38 is opened, and the energization to the solenoid 19 of the electric damper 11 for the refrigerator compartment is also stopped. When the energization to the solenoid 19 is stopped, the force pushing the plunger 23 upward is eliminated, and the plunger 2
3 falls downward together with the restoring action of the spring 24, and the rod 22 is also pulled down. Rod 22
When the pressure is no longer pushed up, the damper flap 20 is pulled down together with the tensile action of the spring 25, the cold air passage 21a is closed, and cooling of the refrigerator compartment 4 is stopped.

On the other hand, regarding the temperature control of the third chamber 5,
When the temperature of the third chamber 5 is higher than the predetermined value, the resistance value R _TH3 of the temperature sensor 35 of the third chamber 5 has become smaller, and the temperature of the E point determined by the resistance value R _TH3 and the resistance R ₇ has decreased. The potential becomes higher than the potential at point F determined by resistors R ₈ and R ₉ , and the output of comparator 47 becomes “H” and is input to pulse generator 56 .
In the pulse generator 56, the "L" time of the pulse generation cycle at that point is shortened and a pulse with a high cycle of "H" generation is output. Therefore, the transistor 48 that receives this pulse period turns on/off accordingly.
By repeating OFF, turning on and off the relay coil 39', and opening and closing the relay contact 39, the solenoid 19' of the electric damper 12 for the third chamber is turned on and off in the same cycle, and the damper flap is turned on and off. 2
0' opens and closes. As a result, cool air is supplied into the third chamber 5 by the blower 9 at regular intervals, and cooling can be performed while keeping the temperature change range small.

In addition, when the temperature of the third chamber 5 becomes lower than a predetermined temperature, the resistance value R _TH3 of the temperature detector 35
increases, the potential at point E becomes smaller than the potential at point F, and the output of comparator 47 becomes "L", which is input to pulse generator 56. In the pulse generator 56, the "L" time of the current pulse generation cycle is extended by one step, and a pulse with a cycle one step lower than the "H" generation rate is output. For this reason, the transistor 48 that receives this pulse cycle is turned on and off according to this cycle, and the damper flap 20' of the electric damper 12 is opened and closed to adjust the amount of cooling, but if it is still overcooled, an additional The "H" generation rate is lowered by extending the "L" time of the pulse generation period step by step, and this action is repeated until the pulse generation period stabilizes within a predetermined temperature range. As a result, the cooling action is not stopped for a long period of time, and cooling and stopping are always repeated at constant short intervals, thereby making it possible to suppress the range of temperature change in the room to a small extent.

Next, if the freezing compartment 3 is subsequently cooled to a certain temperature, the resistance value R _TH1 of the temperature sensor 33 of the freezing compartment will increase, and the A potential will become smaller than the B potential, so
Comparator 41 generates an "L" signal. For this reason, the transistor 42 is turned off and the relay coil 4
9' is cut off, relay contact 49 is opened, and compressor 36 is stopped. At the same time, "L" is also input to one input of the OR circuit 51.

On the other hand, at this time, the pulse generator 56
Regardless of whether it is running or stopping, it always generates a pulse signal with a certain period, so the transistor 48 turns on/off in synchronization with the time period of this pulse signal.
Repeat OFF. When the transistor 48 is turned ON/OFF, the relay coil 39' is turned ON/OFF, the relay contact 39 is opened/closed, the solenoid 19' of the electric damper 12 for the third chamber is turned ON/OFF, and the damper flap 20 is turned ON/OFF in the same period. ′ opens and closes. At the same time, the "H" signal is also input to the OR circuit 51 at a constant cycle, so the transistor 55 connected to it also turns on and off at the same cycle, turning the relay coil 50' on and off, and the relay contact 50 opens and closes, and the blower 9 starts operating and stopping in the same cycle. As a result, during the period when the output of the pulse generator 56 is "H", the blower 9 is used to cool the cooler 8 in synchronization with the opening of the damper flap 20' of the electric damper 12.
Since the cold air accumulated in the surrounding area is supplied to the third chamber 5, even when the compressor 36 is stopped, the third chamber continues to be cooled in a short cycle while keeping the temperature change range small. Ru. Looking at this state in FIG. 7, for the ON/OFF time T ₁ /T ₂ of the compressor 36, the third
The electric damper 12 for the room is turned ON/OFF at a cycle of T ₃ ′/T ₄ ′ adjusted by the pulse generator 56, and the blower 9 is turned ON/OFF during the operation of the compressor 36. When _the compressor 36 _is stopped, the electric damper 12 is turned ON/OFF in synchronization with Controlled within a very small temperature range.

Effects of the Invention As is clear from the above explanation, the present invention uses a forced ventilation system, and includes a freezer compartment, a refrigerator compartment, a third compartment that is cooled independently of both compartments, and a third compartment that is cooled independently of the refrigerator compartment and the third compartment. Two damper opening/closing devices are provided at the entrance of the chamber to adjust the amount of cold air inflow by electrical input, and the damper flap of the damper opening/closing device of the third chamber can be opened or closed regardless of whether the compressor is running or stopping. In addition, the forced draft blower is operated in synchronization with the opening of the damper flap even when the compressor is stopped, so it is repeated at a certain short cycle regardless of whether the compressor is running or stopping. Since cold air is continuously supplied to the third room by the blower, the range of temperature changes in the third room is extremely small, making it possible to perform fine temperature control. (3 to 10 degrees Celsius), and maintain the temperature in a lower temperature range (for example, -3 to 0 degrees Celsius) to preserve fresh foods such as fish and meat for a relatively long period of time without losing their freshness. Since the target is fresh food whose quality is easily affected by the magnitude of temperature change, the temperature control method of the present invention with minute temperature changes is extremely practical and useful.

[Brief explanation of drawings]

FIG. 1 is a control circuit diagram of a refrigerator showing an embodiment of the present invention, FIG. 2 is a sectional view of a damper opening/closing device for a refrigerator compartment, and FIG. 3 is a sectional view of a damper opening/closing device for a third compartment. FIG. 4 is a plan sectional view of the third chamber of the refrigerator, FIG. 5 is an overall sectional view of the refrigerator, FIG. 6 is a partial sectional view of the refrigerator, and FIG. 7 is a plan sectional view of the third chamber of the refrigerator. A temperature characteristic diagram of the chamber, FIG. 8 is a control circuit diagram of a refrigerator showing a conventional example, FIG. 9 is a cross-sectional view of a damper opening/closing device for the refrigerator compartment, and FIG. 10 is a cross-sectional view of a damper opening/closing device for the third chamber. 11 is a plan sectional view of the third chamber of the refrigerator, FIG. 12 is an overall sectional view of the refrigerator, FIG. 13 is a partial sectional view of the refrigerator, and FIG. 14 is a plan view of the third chamber in the conventional example. It is a temperature characteristic diagram. 5...Third chamber, 9...Blower, 12...Third
Damper opening/closing device for the third chamber, 20'... Damper flap of the damper opening/closing device for the third chamber, 36
...Compressor, 46'...Third room temperature control device.

Claims (1)

[Claims] 1. A freezer/refrigerator compartment formed in two compartments on a partition wall, a third compartment that is cooled independently of these two compartments, and a compressor whose operation/stop is controlled depending on the temperature of the freezer compartment. a blower that is operated in synchronization with the compressor to circulate air cooled by the cooler to the freezer/refrigerator compartment and the third compartment; Two damper opening/closing devices that individually adjust the amount of cold air and a damper flap of the damper opening/closing device of the third chamber are repeatedly opened and closed in a certain cycle regardless of whether the compressor is running or stopping, and the blower is A refrigerator comprising a temperature control device that operates the compressor in synchronization with the opening of the damper flap even when the compressor is stopped.