JPH1026456A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To contrive to upgrade the application effect of an air circulation duct and an air circulating fan by operating the air circulating fan during a routine operation when a compressor comes to a halt and providing a control device which executes operation for a definite time during quenching time. SOLUTION: When a quenching switch 37 is not turned on, a temperature determination means 36 in a freezer compartment determines whether or not the temperature in the freezer compartment 18 is higher or lower to an on/off setting temperature. When the freezer compartment temperature determination means 36 determines that the temperature in the freezer compartment is lower than the off setting temperature, the operation of a compressor 22 is halted with a compressor control means 40. When the compressor is halted, an air circulating fan 29 is operated by an air circulating fan control means 41. On one hand when the quenching switch 37 is turned on, the air circulating fan 29 is operated in continuous mode with the air circulating fan control means 41 irrespective of the operating state of the compressor 22. Therefore, this construction makes it possible to upgrade the application effect of the air circulating duct 28 and the air circulating fan 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a forced-ventilation system and a blower for air circulation in addition to a blower for cooling.

[0002]

2. Description of the Related Art Conventionally, a forced-ventilated refrigerator has been
With respect to a refrigerator provided with a blower for air circulation in addition to a blower for cooling in a refrigerator, a refrigerator described in Japanese Patent Application Laid-Open No. 7-35466 is known. FIG. 5 shows the structure of a conventional forced-ventilation refrigerator in which a blower for air circulation is provided in a refrigerator in addition to a blower for cooling, and 1 is a refrigerator body constituted by a heat insulating material 2. The partition wall 3 defines a freezer compartment 4 at an upper portion and a refrigerator compartment 5 at a lower portion.

[0003] Reference numeral 6 denotes a cooler of a refrigerating cycle, and 7 denotes a blower for forcibly ventilating the cool air cooled by the cooler 6 to the freezing chamber 4 and the refrigerating chamber 5, and is usually a compressor (not shown). ) Is configured to operate in synchronization with

A glass tube type defrost heater 8 is provided below the cooler 6 and performs a heating defrost operation.
An adsorption-type pyrolysis catalyst layer is applied to the surface of the glass tube.

[0005] Reference numeral 9 denotes a cool air discharge duct for passing cool air cooled in the cooler 6 to the refrigerating room 5 by a blower 7. Reference numeral 10 denotes an air circulation duct provided in the refrigerating room 5, which is provided with an air circulation blower 11 at the uppermost portion thereof. Low temperature active catalyst 1
2 is provided. Here, the air circulation blower 1 is used.
1 is configured to operate when the compressor and the blower 7 are stopped.

The operation of the refrigerator configured as described above will be described. While the compressor and the blower 7 are operating, the air circulation blower 11 is not energized, and the freezing room 4 and the refrigerating room 5 are cooled to predetermined temperatures.

During this time, the odor component in the room is adsorbed on the adsorption type pyrolysis catalyst layer of the defrost heater 8. Thereafter, when the operation time of the compressor is accumulated for a predetermined time, the defrost heater 8 is energized to perform the defrosting operation of the cooler 6, and the adsorption type decomposition catalyst layer is heated, so that the adsorbed odor component is thermally decomposed. . The deodorizing action is performed in this way.

On the other hand, while the compressor and the blower 7 are stopped, the deodorizing effect cannot be exerted because the circulation of the cool air to the defrost heater 8 is stopped. However, since the air circulating blower 11 in the refrigerator compartment is operated, the odor component in the room is reduced. Is forcibly circulated and adsorbed to the low-temperature active catalyst 12 in the air circulation duct, and is oxidatively decomposed at a low temperature to perform a deodorizing action.

As described above, since the deodorizing action is performed irrespective of the operation and stoppage of the compressor and the blower, a stable deodorizing effect can be exhibited even when the condition changes such as a change in the outside air temperature.

[0010]

However, in the above configuration, an air circulating duct and an air circulating fan are provided separately from the cooling fan, and the deodorizing means is provided in the circulating air passage to enhance the deodorizing effect. Although it was shown, no other purpose or effect of providing the air circulation duct and the air circulation blower was mentioned.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to enhance the application effects of an air circulation duct and an air circulation blower, and to provide a function with high cost performance.

[0012]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention is directed to an air circulation duct vertically provided in a deep center portion of a refrigerator compartment, and a deodorizing device provided in a part of the air circulation duct. Means and an air circulation blower provided at the bottom, a quenching zone configured at the lowest stage of a refrigerator compartment facing the air circulation blower, an air discharge port opened to the quenching zone, and provided at each upper stage. An air inlet, a cool air discharge duct that is provided vertically at both ends at a predetermined distance from the air circulation duct, and discharges cool air from the blower, between the cool air discharge duct and the cooler. A damper device for controlling the air flow by opening and closing the provided flap;
The air circulation blower comprises a temperature detecting means for detecting the temperature of the refrigerating compartment and an outside air temperature detecting means for detecting an outside air temperature. It is provided with a control device for performing the control. Further, the damper device is provided with a control device for determining a reduction temperature of the damper "closed" set temperature based on a temperature rise width of the refrigerator compartment during rapid cooling.

In addition, a control device is provided for determining the temperature at which the damper "closed" set temperature is lowered based on the outside air temperature during rapid cooling.

Thus, during operation of the compressor and the blower, cool air is discharged from both end portions of the inner side of each stage in the refrigerating compartment, and both end portions which are close to the heat insulating wall and have a distributionally high temperature are preferentially cooled. Then, the temperature distribution in the horizontal direction of each stage of the refrigerator compartment is averaged. In addition, due to the stirring action of the air circulation blower, the upper and lower air are exchanged through the air circulation duct, and the temperature distribution in the vertical direction of the refrigerator compartment is also averaged.

Further, the odor component is efficiently collected and adsorbed by the deodorizing means provided in the air circulation duct.

Further, the quenching zone facing the lowermost air circulating blower originally has a tendency that cold air tends to stagnate and tends to be at a low temperature. The air in the refrigerator compartment is concentrated and sent from the provided air inlet, and when the compressor is operating, the cool air supplied from the cooler is discharged to the rapid cooling zone through the air circulation duct by the air circulation blower. Cooling is promoted.

Further, at the time of rapid cooling, the damper "closed" set temperature is reduced by the temperature rise width of the refrigerator compartment and the outside air temperature, and the temperature distribution inside the refrigerator is averaged by the air circulation blower. The prevention of freezing by supercooling the food in each stage of the refrigerator compartment and the improvement of the rapid cooling effect of the food in the rapid cooling zone are obtained.

Thus, the effect of applying the air circulation duct and the air circulation blower is enhanced, and a refrigerator having a function with high cost performance can be provided.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention comprises a main body and a door formed of a heat insulating material, a freezing room and a refrigerator room formed in the main body, a compressor, a condenser, and a cooler. A refrigeration cycle comprising: a refrigeration cycle; a blower for forcibly ventilating the cool air cooled by the cooler to the freezing compartment and the refrigeration compartment; an air circulation duct vertically provided in a deep center portion of the refrigeration compartment; and the air circulation. Deodorizing means provided in a part of the duct and an air circulation blower provided at the bottom, a quenching zone formed at the lowest stage of a refrigerating room facing the air circulation blower, and an air outlet opened to the quenching zone An outlet, an air suction port provided at each upper stage, a cold air discharge duct which is provided vertically at both inner rear ends with a predetermined distance from the air circulation duct, and discharges cool air from the blower; Of the discharge duct and the cooler A damper device for controlling the air flow by opening and closing the flap provided in the, and a temperature detecting means for detecting the temperature of the refrigerator compartment, the air circulation blower is normally operated when the compressor is stopped, and The refrigerator is provided with a control device for continuously operating for a certain period of time during rapid cooling, and a control device for determining the temperature at which the "closed" set temperature of the damper device is lowered according to the increase width of the refrigerator compartment temperature during rapid cooling. During operation of the air conditioner and blower, cool air is discharged from both ends of the inner side of each stage in the refrigerator compartment, and both ends where the temperature is distributed higher due to proximity to the heat insulating wall are preferentially cooled. The temperature distribution in the direction is averaged. In addition, due to the stirring action of the air circulation blower, the upper and lower air are exchanged through the air circulation duct, and the temperature distribution in the vertical direction of the refrigerator compartment is also averaged.

The odor components are efficiently collected and adsorbed by the deodorizing means provided in the air circulation duct.

Furthermore, the quenching zone facing the lowermost air circulating blower originally has a tendency that cold air tends to stagnate and tends to be at a low temperature. In addition, when the compressor is stopped, each of the upper tiers is opened via an open air discharge port. The air in the refrigerator compartment is intensively sent from the provided air inlet, and when the compressor is operating, the cool air supplied from the cooler is discharged to the rapid cooling zone via the air circulation duct by the air circulation blower. This has the effect of promoting cooling.

Furthermore, the damper device for controlling the air flow rate determines the temperature at which the damper "closed" temperature is reduced by the temperature rise width of the refrigerator compartment detected by the refrigerator compartment temperature detecting means during rapid cooling, so that only the food in the rapid cooling zone is determined. Can be cooled quickly. In addition, the air circulation blower has the effect of averaging the temperature distribution in the refrigerator, and most of the cool air from the cooler can be discharged directly to the quenching zone via the bypass duct. Has the effect of preventing freezing of food due to overcooling.

According to a second aspect of the present invention, the damper device for controlling the air volume includes a control device for determining the temperature at which the damper "closed" set temperature is lowered based on the outside air temperature detected by the outside air temperature detecting means during rapid cooling. In the refrigerator according to the first aspect, at the time of rapid cooling, only the food in the rapid cooling zone can be rapidly cooled by lowering the damper "closed" set temperature depending on the outside air temperature. In addition, the effect of averaging the temperature distribution in the refrigerator by the air circulation blower and the majority of the cool air from the cooler can be discharged to the quenching zone via the air circulation duct, This has the effect of preventing freezing of food due to overcooling.

(Embodiment 1) FIG. 1 is a front view of a refrigerator according to an embodiment of the present invention, and FIG. 2 is a sectional view of the refrigerator according to an embodiment of the present invention. 1 and 2, reference numeral 13 denotes a heat insulating material.
4. The main body of the refrigerator constituted by 4
6, a refrigerator compartment 17 is formed in the upper part, a freezer compartment 18 is formed in the middle part, and a vegetable compartment 19 is formed in the lower part.

Reference numeral 20 denotes a cooler of the refrigerating cycle, 21 denotes a blower for forcibly blowing the cool air cooled by the cooler 20 to each of the chambers, and 22 denotes a compressor provided at the bottom of the main body. The compressor 22 is configured to operate synchronously.

Reference numeral 23 denotes a cool air discharge duct for discharging cool air forcedly blown by the blower 21 into the refrigerator compartment 17, which is provided vertically above and near both ends of the inner surface of the refrigerator compartment 17. Reference numeral 42 denotes a plurality of cool air discharge ports provided in the cool air discharge duct 23, and the cold room 1 divided by the shelf 43.
Openings are provided so as to correspond to a plurality of steps in the same.

Reference numeral 24 denotes a damper device provided between the cooler 20 and the cool air discharge duct 23, and has an operation of controlling the air flow by opening and closing the flap 25. Reference numeral 26 denotes a refrigerator temperature detecting means provided on the inner surface of the refrigerator compartment 17 for detecting the temperature of the refrigerator compartment 17. Reference numeral 27 denotes a refrigerator compartment temperature determining unit for determining whether the refrigerator compartment temperature detected by the refrigerator compartment temperature detector 26 is within a set temperature range.

Numeral 28 denotes air circulation ducts provided vertically in the center of the back surface inside the refrigerator compartment 17.
3 are arranged at a predetermined interval. Reference numeral 29 denotes an air circulation blower provided at the lowermost portion in the air circulation duct 28, and sucks air in the refrigeration room from a plurality of air suction ports 30 opened in the air circulation duct 28 so as to correspond to each upper stage. Are configured to be discharged from an air discharge port 31 opened on the front surface.

Reference numeral 32 denotes a quenching zone formed at the lowermost stage of the refrigerating compartment 17 so as to face the air circulation blower 29. Reference numeral 34 denotes a deodorizing means provided in the air circulation duct 28 on the windward side (above) of the air circulation blower 29 and made of a honeycomb-shaped low-temperature active catalyst mainly composed of, for example, manganese oxide or the like.

Reference numeral 35 denotes a freezing room temperature detecting means provided on one surface of the freezing room 18 for detecting the temperature of the freezing room 18. 36 is a freezing room temperature determining means for determining whether the freezing room temperature detected by the freezing room temperature detecting means 35 is within a set temperature range.

Reference numeral 37 denotes a rapid cooling switch for forcibly operating the air circulation blower 29. Reference numeral 38 denotes a control time measuring means for measuring the rapid cooling operation time T1.

Reference numeral 39 denotes the refrigerator compartment temperature judging means 2.
7, freezer compartment temperature determining means 36, control time measuring means 38,
This is a damper device control unit that commands opening and closing of the damper device 24 based on the output of the quenching switch 37. Also, 4
Reference numeral 0 denotes a compressor control unit for instructing operation of the compressor based on the output of the freezing room temperature determination unit 36.

Reference numeral 41 denotes an air circulation blower control means for instructing the operation of the air circulation blower 29 based on the outputs of the freezing room temperature determining means 36, the control time measuring means 38, and the quenching switch 37. Reference numeral 44 denotes a refrigerator interior temperature rise determination unit that determines how many times the temperature inside the refrigerator room detected by the refrigerator room temperature detection unit 26 has increased.

Next, the operation of the above configuration will be described with reference to the flowchart of FIG. 3 and the timing chart of FIG.

First, it is determined whether or not the rapid cooling switch 37 is turned on (Step 1). If the quenching switch 37 is not turned on, the freezing room temperature detecting means 35 detects the temperature in the freezing room (Step 2). Then, the freezing room temperature determining means 36 determines whether the temperature in the freezing room is higher or lower than the ON / OFF set temperature (Step 3).

That is, if the temperature in the freezer compartment is higher than the ON set temperature, the compressor is operated by the compressor control means 40 (Step 4), and then the air circulation blower control means 4 is operated.
1, the operation of the air circulation blower 29 is stopped (Step 5).

On the other hand, if the freezing room temperature is lower than the OFF set temperature, the compressor is stopped by the compressor control means 40 (Step 6). Then, the air circulation blower 29 is operated by the air circulation blower control means 41 (St).
ep7).

Next, the refrigerator compartment temperature detecting means 26 is connected to the refrigerator compartment 1.
7 is detected (Step 8). Then, the refrigerator compartment temperature determining means 27 determines whether the temperature in the refrigerator compartment 17 is higher or lower than the open / close set temperature (Step 9).

That is, if the temperature in the refrigerator compartment is higher than the set open temperature, the damper device control means 41 opens the damper device (Step 10). On the other hand, if the temperature of the refrigerator compartment is lower than the set temperature, the damper device is closed (Step 11).

As described above, while the compressor 22 is operating, the blower 21 is also operated at the same time, and the cool air cooled by the cooler 20 is supplied from the cool air discharge port 42 through the cool air discharge duct 23 to both ends in the refrigerator compartment 17. It is discharged near. For this reason, cooling near the both ends of the room where the poor temperature distribution due to the heat balance with the outside air near the heat insulating wall is a problem is promoted, and the temperature in the left-right direction of each stage partitioned by the plurality of shelves 43 is increased. Averaged.

On the other hand, when the compressor 22 is stopped, the air circulating blower 29 is operated, and the air in the refrigeration chamber is sucked from the air suction ports 30 provided at the respective stages except for the lowermost stage of the refrigeration room 17 so that the air in the air circulation duct 28 Circulates downward, and is repeatedly discharged from the air discharge port 31 opened at the lowest stage through the deodorizing means 34 to concentrate on the rapid cooling zone.

For this reason, the adsorption efficiency to the deodorizing means 34 is increased, the deodorization is promoted by the oxidative decomposition action of the low-temperature active catalyst, and at the same time, the refrigeration room air is discharged with a small resistance into the quenching zone 32 which is faced, Promotes cooling of foods stored in a wide area.

Further, since the air circulation operation of the refrigerator 29 by the air circulation blower 29 is mainly performed when the compressor 22 is stopped, the air circulation operation does not hinder the cooling operation performed during the operation of the compressor. The temperature can be averaged over the top, bottom, left and right of the food, and the storage quality of the food can be stably maintained.

On the other hand, if the quenching switch 37 is turned on in Step 1, the control time measuring means 38 starts time measurement irrespective of the operation state of the compressor 22 (Step 12), and determines whether there is a remaining time for the fixed time T1. (Ste
p13).

Then, while there is remaining time, the air circulation blower control means 41 continuously operates the air circulation blower 29 (Step 14).

Next, the refrigerator compartment temperature detecting means 26 detects the temperature in the refrigerator compartment (Step 15).

Then, the refrigerating room temperature rise width judging means 44 determines whether the temperature rise in the refrigerating room is larger or smaller than 2 ° C., for example (Step 16). If the temperature rise width is large, the damper “closed” set temperature of the damper device control means 39 is reduced by, for example, 4 ° C. (Step 1).
7).

On the other hand, if the temperature rise width is smaller than 2 ° C., the damper “closed” set temperature of the damper device control means 39 is lowered by, for example, 2 ° C. (Step 18). Next, the refrigerator compartment temperature judging means 27 decides how much the temperature inside the refrigerator compartment is higher or lower than the set open / closed temperature (Step 19).

That is, if the temperature in the refrigerator compartment is higher than the set open temperature, the damper device control means 39 opens the damper device (Step 20). On the other hand, if the temperature in the refrigerator compartment is lower than the normal closing set temperature set in Step 17 or 18, the damper device is closed (Step 21). Thereafter, the process returns to Step 1 again.

Therefore, during operation of the compressor 22, the cooling device 2
Most of the cold air cooled at 0 is drawn from the air circulation duct 28 to the air circulation blower, and is directly discharged to the quenching zone 32, and cools the food stored in the quenching zone 32 with the cold air. And increase the rapid cooling effect.

At this time, the food stored in each stage other than the quenching zone 32 can be cooled by the remaining cold air not drawn into the air circulation duct 28, so that there is no problem such as an increase in temperature. In addition, freezing due to supercooling of the food in each stage of the refrigerator compartment 17 can be prevented.

During the rapid cooling, the closing of the flap 25 of the damper device 24 is delayed until the temperature of the refrigerator compartment 17 becomes lower than usual.

That is, by changing the set temperature of the damper “closed” of the damper control device 39 according to the magnitude of the temperature rise in the refrigerator, the food having a large amount of heat is introduced into the refrigerator and the temperature in the refrigerator is reduced. When the temperature rises, the amount of cold air ventilated to the refrigerator compartment is increased to increase the rapid cooling zone 3.
2. Improve the rapid cooling effect of the food stored in 2.

When the amount of heat is small, the lowering temperature is reduced to prevent the food from being supercooled. As a result, in addition to suppressing deterioration in quality due to a rise in the temperature of the refrigerator compartment, it has an effect of extremely enhancing practical effects such as being able to respond quickly to foods and using cooking preparations such as removing heat from foods.

(Embodiment 2) The structure of claim 2 of the present invention is the same as that of claim 1 of the present invention, detailed description of the structure is omitted, and the operation is shown in the flowchart of FIG. 5 and the timing chart of FIG. This will be described with reference to FIG.

First, it is determined whether or not the rapid cooling switch 37 is turned on (Step 1). When the quenching switch 37 is not turned on, control is performed in exactly the same manner as in claim 1 of the present invention.

On the other hand, when the quenching switch 37 is turned on in Step 1, the control time measuring means 38 starts time measurement regardless of the operating state of the compressor 22 (Step 1).
2) It is determined whether or not there is a remaining time for the certain time T1 (Step 13).

Then, while there is remaining time, the air circulation blower control means 41 continuously operates the air circulation blower 29 (Step 14). Next, the outside air temperature detecting means 45 detects the outside air temperature (Step 22). Then, the outside air temperature determining means 46 determines whether the outside air temperature is higher or lower than, for example, 20 ° C. (Step 23).

That is, if the outside air temperature is higher than 20 ° C., the damper “closed” set temperature of the damper device control means 39 is reduced by, for example, 3 ° C. (Step 24).

On the other hand, if the outside air temperature is lower than 20 ° C., the damper “closed” set temperature of the damper device control means 39 is reduced by, for example, 1 ° C. (Step 25). Next, the refrigerator compartment temperature judging means 27 decides how much the temperature inside the refrigerator compartment is higher or lower than the set open / close temperature (Step 26).

That is, if the temperature in the refrigerator compartment is higher than the set open temperature, the damper device control means 39 opens the damper device 24 (Step 27). On the other hand, if the temperature in the refrigerator compartment is lower than a temperature lower than the normal closed set temperature set in Step 24 or Step 25, the damper device is closed (Step 28). Thereafter, the process returns to Step 1 again.

As described above, at the time of rapid cooling, the set temperature at which the flap 25 of the damper device 24 closes is delayed until the temperature of the refrigerator compartment 17 becomes lower than usual, depending on the outside air temperature. That is, when the outside air temperature is high and the amount of heat is large, the reduction temperature of the “closed” set temperature of the damper device control means 39 is increased,
Increase the amount of cold air that passes through the refrigerator compartment,
The quick cooling effect of the food stored in the can be enhanced.

When the outside air temperature is low and the amount of heat is small, the reduction temperature of the "closed" set temperature of the damper device control means 39 is reduced, and the amount of cool air passed through the refrigerator compartment is adjusted in accordance with the amount of heat to rapidly cool. It is possible to prevent freezing of the food stored in the zone 32 due to supercooling.

In addition, the effect of averaging the temperature distribution in the refrigerator by the air circulation blower 29 and the majority of the cool air from the cooler 20 are discharged directly to the rapid cooling zone 32 via the air circulation duct 28. Therefore, it is possible to prevent freezing due to overcooling of the food in each stage of the refrigerator compartment 17 other than the rapid cooling zone 32.

[0065]

As described above, according to the present invention, during the operation of the compressor and the blower, cool air is discharged from both ends of the inner side of each stage in the refrigerator compartment, and is close to the heat insulating wall. The higher end portions are preferentially cooled, and the temperature distribution in the left-right direction of each stage of the refrigerator compartment is averaged. In addition, due to the stirring action of the air circulation blower, the upper and lower air are exchanged through the air circulation duct, and the temperature distribution in the vertical direction of the refrigerator compartment is also averaged.

The odor components are efficiently collected and adsorbed by the deodorizing means provided in the air circulation duct.

Further, the quenching zone facing the lowermost air circulation blower originally has a tendency that cold air tends to stagnate and tends to become low temperature. In addition, when the compressor is stopped, each of the upper stages through the open air discharge port is opened. The air in the refrigerator compartment is concentrated and sent from the provided air inlet, and when the compressor is operating, the cool air supplied from the cooler is directly discharged to the rapid cooling zone via the bypass duct by the air circulation blower. Cooling is promoted.

In the case of rapid cooling, the reduction temperature of the set temperature of the "closed" of the damper device is adjusted according to the temperature rise width in the refrigerator compartment or the outside air temperature, and the flap of the damper device is lowered until the temperature of the refrigerator compartment becomes lower than usual. By delaying the closing, it is possible to rapidly cool only the food in the quenching zone and to prevent freezing due to overcooling of the food. In addition, the air circulation blower has the effect of averaging the temperature distribution inside the refrigerator, and most of the cool air from the cooler can be discharged directly to the quenching zone via the air circulation duct. It is possible to prevent freezing due to supercooling of the food in each stage of the refrigerator compartment other than the above.

As a result, the deterioration of the quality of the food due to the temperature is suppressed, and it is possible to quickly respond to edible use, and it is possible to greatly enhance the practical effects such as being able to use it for preparing cooking such as removing the heat of the food. An advantageous effect is obtained in that the effect of applying the air circulation duct and the air circulation blower is enhanced, and a refrigerator having a function with high cost performance can be provided.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator showing one embodiment of the present invention.

FIG. 2 is a longitudinal sectional view and a control block diagram of a refrigerator showing one embodiment of the present invention.

FIG. 3 is a control flowchart of the refrigerator according to the first embodiment of the present invention;

FIG. 4 is a timing chart of a refrigerator showing one embodiment of the present invention.

FIG. 5 is a longitudinal sectional view and a control block diagram of a refrigerator according to a second embodiment of the present invention.

FIG. 6 is a control flowchart of a refrigerator according to a second embodiment of the present invention.

FIG. 7 is a timing chart of a refrigerator showing one embodiment of the second embodiment of the present invention.

FIG. 8 is a longitudinal sectional view of a conventional refrigerator.

[Explanation of symbols]

 13 Refrigerator body 14 Insulation material 17 Cold room 18 Freezer room 20 Cooler 21 Blower 22 Compressor 23 Cold air discharge duct 24 Damper device 26 Cold room temperature detecting means 28 Air circulation duct 29 Air circulation blower 30 Air inlet 31 Air outlet 32 Rapid cooling zone 34 Deodorizing means

Claims (2)

[Claims] An insulated box made of a heat insulating material, a freezing room and a refrigerating room formed in the main body, a refrigerating cycle including a compressor, a condenser, a cooler, and the like, and cold air cooled by the cooler. A blower for forcibly ventilating the freezer compartment and the refrigerator compartment, an air circulation duct provided vertically in a deep center portion of the refrigerator compartment, a deodorizing means provided in a part of the air circulation duct, and a lowermost portion. An air circulation blower provided in, a quenching zone configured at the lowest stage of the refrigerator compartment facing the air circulation blower, and an air discharge port opened to the quenching zone,
An air intake port provided at each upper stage, a cool air discharge duct that is provided vertically at both ends at a predetermined distance from the air circulation duct, and discharges cool air from the blower, and the cool air discharge duct. It is composed of a damper device that controls the air volume by opening and closing a flap provided between the coolers, and a temperature detection unit that detects the temperature of the refrigerator compartment, and the air circulation blower normally stops the compressor at normal times. And a control device for continuously operating for a certain period of time during quenching, and a control device for determining a temperature at which the set temperature of the "closed" of the damper device is lowered according to a rise width of the refrigerator compartment temperature. refrigerator. 2. A refrigeration cycle including a heat insulating box made of a heat insulating material, a freezing room and a refrigerator formed in the main body, a compressor, a condenser, a cooler, and the like, and cold air cooled by the cooler. A blower for forcibly ventilating the freezer compartment and the refrigerator compartment, an air circulation duct provided vertically in a deep center portion of the refrigerator compartment, a deodorizing means provided in a part of the air circulation duct, and a lowermost portion. An air circulation blower provided in, a quenching zone configured at the lowest stage of the refrigerator compartment facing the air circulation blower, and an air discharge port opened to the quenching zone,
An air intake port provided at each upper stage, a cool air discharge duct that is provided vertically at both ends at a predetermined distance from the air circulation duct, and discharges cool air from the blower, and the cool air discharge duct. It is composed of a damper device that controls the air volume by opening and closing a flap provided between the coolers, and a temperature detection unit that detects the temperature of the refrigerator compartment, and the air circulation blower normally stops the compressor at normal times. A refrigerator comprising: a control device which is operated at the time of cooling and which lowers a set temperature of "closed" of the damper device at the time of rapid cooling according to an outside air temperature.