JPH1026458A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator, increasing the applying effect of an air circulating duct as well as an air circulating fan and provided with a function high in cost performance, in the refrigerator provided with the air circulating duct and the air circulating fan different from a fan for cooling. SOLUTION: A damper device 24 is provided with a control means, delaying the closing of a flap 25 upon quick cooling operation by a time wherein the temperature of a refrigerating chamber becomes lower than that upon usual time, and another control means, returning the closing temperature of the flap 25 after a given period of time has elapsed or by the output of the temperature detecting means 26 of the refrigerating chamber to switch the temperature of the refrigerating chamber to a usual setting, is added thereto. According to this method, deodorizing effect is increased, a temperature distribution in the chamber is averaged and the cooling of foods in a quick cooling zone can be promoted without cooling the existing foods in the chamber excessively.

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 An example of a forced-ventilated refrigerator in which a blower for air circulation is provided in a refrigerator in addition to a blower for cooling is disclosed in, for example, JP-A-7-35466. Hereinafter, description will be made with reference to FIG.

[0003] Reference numeral 1 denotes a refrigerator body composed of a heat insulating material 2.
Are formed. 6 is a refrigeration cycle cooler, 7
Is a blower for forcibly ventilating the cool air cooled by the cooler 6 to the freezer compartment 4 and the refrigerating compartment 5, and is configured to operate in synchronization with a compressor (not shown) of a normal refrigerating cycle. I have.

A glass tube type defrosting heater 8 is provided below the cooler 6 and performs a heating defrosting 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 11 is configured to operate while the compressor and the blower 7 are stopped.

The operation of the refrigerator constructed 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 refrigeration room 5 are not energized.
Is cooled to a predetermined temperature.

During this time, the odor component in the room is adsorbed on the adsorption type pyrolysis catalyst layer of the defrost heater 8.

After that, when the operation time of the compressor is integrated for a predetermined time, the defrost heater 8 is energized to perform the defrosting operation of the cooler 6, and the adsorption type pyrolysis catalyst layer is heated to adsorb the odor component. Is thermally decomposed. The deodorizing action is performed in this way.

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

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

[0012]

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.

The present invention has been made in consideration of the above problems, and has as its object to enhance the application effects of an air circulation duct and an air circulation blower, and to provide a function with high cost performance.

[0014]

In order to solve the above-mentioned problems, a refrigerator according to the present invention comprises an air circulation duct vertically provided in a deep center part of the refrigerator compartment, and a part of the air circulation duct. Deodorizing means provided, 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, An air intake port provided at each 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, the cold air discharge duct, A damper device that controls the air volume by opening and closing a flap provided between the coolers, a temperature detection unit that detects the temperature of the refrigerator compartment, and the air circulation blower that is normally operated when the compressor is stopped, and Control means for continuously operating for a fixed time during quenching, delaying the closing of the flap until the temperature of the refrigerator becomes lower than usual during quenching of the damper device, and after a lapse of a certain time, or for detecting the temperature of the refrigerator. Control means for switching to control for closing the flap so as to return to the normal refrigerator compartment temperature by the output.

Thus, during operation of the compressor and the blower, cool air is discharged from both ends of the inner side of each stage in the refrigerating compartment, and both ends, which are close to the heat insulating wall and have a distributionally high temperature, are accelerated to cool. The temperature distribution in the left-right direction is averaged. In addition, due to the stirring action of the air circulation blower, the upper and lower air is exchanged through the air circulation duct, and the temperature distribution in the vertical direction of the room is also averaged.

Further, 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 stages through the open air discharge port is opened. The air in the refrigerating compartment is concentrated and sent from the air inlet provided in the refrigeration compartment, and when the compressor is operating, the cool air supplied from the cooler is sent to the quenching zone via the air circulation duct by the air circulation blower. Since it can be discharged, cooling is promoted.

Further, during the rapid cooling, the closing of the flap is delayed until the temperature of the refrigerator becomes lower than usual, thereby increasing the amount of cold air flowing into the rapid cooling zone to further promote the cooling of the food. At this time, the flap closing temperature is returned to the normal control after a lapse of a certain period of time or by the output of the temperature detection means of the refrigerator compartment, and together with the efficiency of averaging the temperature distribution in the refrigerator by the air circulation blower, the rapid cooling zone is set. It is possible to prevent overcooling of the food in each stage of the refrigerator compartment other than the above.

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.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION
A heat insulation box made of a heat insulating material, a freezing room formed in the main body, a refrigerator room, a compressor, a condenser, a refrigeration cycle including a cooler, and the like, A blower for forcibly blowing air into the refrigerator compartment, an air circulation duct provided vertically in the center of the interior of the refrigerator compartment, a deodorizing means provided in a part of the air circulation duct, and an air circulation A blower, a quenching zone configured at the lowermost stage of the refrigerator compartment facing the air circulation blower, an air discharge port opened to the quenching zone, an air intake port provided at each upper stage, and the air circulation duct. A cool air discharge duct that is provided vertically at both ends at predetermined intervals and discharges cool air from the blower, and controls an air volume by opening and closing a flap provided between the cool air discharge duct and the cooler Damper equipment Temperature control means for detecting the temperature of the refrigerating compartment, and a control device for operating the air circulation blower when the compressor is stopped in a normal state, and for a constant time during rapid cooling, and a control device for controlling the air volume. During rapid cooling, the damper device delays closing the flap until the temperature of the refrigerator becomes lower than normal based on the output of the temperature detection means of the refrigerator, and switches to control to close the flap at the normal set temperature after a certain period of time. During the operation of the compressor and the blower, cool air is discharged from both ends at the back of each stage in the refrigerating chamber, and both ends where the temperature is distributed high because of proximity to the heat insulating wall are preferentially cooled. The temperature distribution in the left-right direction of each stage of the refrigerator compartment is averaged.

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

The quenching zone facing the lowermost air circulating blower has the advantage that the cold air tends to stagnate and tends to cool down. The air inside the refrigerator compartment is concentrated and sent in from the provided air inlet, and when the compressor is running, the cool air supplied from the cooler is discharged to the rapid cooling zone via the air circulation duct by the air circulation blower. Cooling is promoted.

Further, in the case of rapid cooling, by delaying the closing of the flap until the temperature of the refrigerator becomes lower than usual, the amount of cold air flowing into the rapid cooling zone is increased, and the cooling of food is further promoted. At this time, the flap closing temperature switches to the normal closing set temperature after a certain period of time, so during rapid cooling,
It has the effect of preventing overcooling of the food in each stage of the refrigerator compartment other than the rapid cooling zone.

According to a second aspect of the present invention, the damper device for controlling the air flow delays closing the flap until the temperature of the refrigerator becomes lower than usual based on the output of the temperature detecting means of the refrigerator during rapid cooling, 2. The refrigerator according to claim 1, further comprising control means for switching to control for closing the flap at a normal set temperature based on the output of the temperature detection means of the refrigerator compartment, wherein the temperature of the refrigerator compartment becomes lower than usual during rapid cooling. By delaying the closing of the flap, the cold air inflow into the quenching zone is increased, further promoting cooling of the food product. At this time, the closing temperature of the flap is switched to the normal closing temperature when the temperature of the refrigerating compartment is determined to be extremely low by the refrigerating compartment temperature determining means based on the output of the refrigerating compartment temperature detecting means. As in the item 1, during rapid cooling, it has an effect of preventing overcooling of food in each stage of the refrigerator compartment other than the rapid cooling zone.

(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 a 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. And the compressor 22 are configured to operate in synchronization.

Numeral 23 denotes a cool air discharge duct for discharging cool air forced to be 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 in 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 rapid cooling zone which is formed at the lowermost stage of the refrigerator compartment 17 and faces 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 in one section 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. And 3
Reference numeral 9 denotes a damper device control unit that instructs the opening and closing of the damper device 24 based on the outputs of the refrigerator compartment temperature determination unit 27, the freezer compartment temperature determination unit 36, the control time measurement unit 38, and the quenching switch 37.

The reference numeral 40 designates the freezer compartment temperature judging means 36.
Compressor control means for instructing operation of the compressor based on the output of the compressor. Reference numeral 41 denotes an air circulation blower control unit that commands the operation of the air circulation blower 29 based on the outputs of the freezing room temperature determination unit 36, the control time measurement unit 38, and the quenching switch 37.

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 29 is operated by the air circulation blower control means 41. 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 determination means 27 determines whether the temperature in the refrigerator compartment 17 is higher or lower than the open / close set temperature of the damper device 24 (Step 9).

That is, the temperature in the refrigerator compartment is controlled by the damper device 24.
If the temperature is higher than the open set temperature of the damper device control means 41
To open the damper device 24 (Step
10). On the other hand, if the refrigerator compartment temperature is lower than the set temperature of the damper device 24, the damper device 24 is closed (Step 11).

As described above, while the compressor 22 is operating, the blower 21 is operated at the same time, and the cool air cooled by the cooler 20 is discharged from the cool air discharge 42 through the cool air discharge duct 23 to the vicinity of both ends in the refrigerator compartment 17. Is discharged. 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 room is sucked from the air suction ports 30 provided at the respective stages except 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.

Therefore, the efficiency of adsorption to the deodorizing means 34 is increased, and the deodorizing is promoted by the oxidative decomposition action of the low-temperature active catalyst. Cool the food stored in a large 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 does not hinder the cooling performed during the operation of the compressor. The temperature can be averaged up, down, left, and right, and the preservation 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 regardless of the operation state of the compressor 22 (Step 12). Subsequently, the open / close set temperature switching time measuring means 44 of the refrigerator compartment
Starts time measurement (Step 13).

Next, at step 14, the control time measuring means 38
To determine whether there is a remaining time for the fixed time T1,
As long as there is a remaining time, the air circulation blower control means 41 continuously operates the air circulation blower 29 (Step
15) The presence / absence of a remaining time for the fixed time T2 is determined by the open / closed set temperature switching time measuring means 44 of the refrigerator compartment (Step 17), and the closed set temperature of the damper device 24 is set in advance during the remaining time. t lower than t1 ° C
Switch to 2 ° C. (Step 18).

At this time, the temperature in the refrigerator compartment is set lower than usual. On the other hand, when there is no remaining time of T2, the closing set temperature of the damper device 24 is set to the normal t1 ° C. (S
Step 19), the temperature in the refrigerator compartment becomes the normal set temperature.

Next, in Step 20, based on the output of the refrigerator temperature detecting means 26, the refrigerator interior temperature determining means 27 determines how high or lower the temperature of the refrigerator is with respect to the set opening / closing temperature of the damper device 24. If it is determined that the temperature in the refrigerator compartment is higher than the set temperature, the damper device control means 39 opens the damper device 24 (Step 2).
1).

On the other hand, if the refrigerator compartment temperature is lower than the set set temperature (t1 ° C. or t2 ° C.) of the damper device 24, the damper device 24 is closed (Step 2).
2). Thereafter, the process returns to Step 1 again.

Therefore, during operation of the compressor 22, the cooling device 2
Most of the cool air cooled at 0 is drawn from the air suction port 30 to the air circulation blower and is directly discharged to the quenching zone 32, and is stored in the quenching zone 32 with cold cool air to cool the food, Improve the rapid cooling effect.

At this time, since 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 suction port 30, there is no problem such as an increase in temperature.

As a result, in addition to suppressing quality deterioration due to temperature, practical effects such as being able to respond quickly to food and being able to be used for preparation of cooking such as heat removal of food are extremely enhanced.

Further, by closing the flap 25 of the damper device 24 until the temperature of the refrigerator compartment 17 becomes lower than usual during rapid cooling, the amount of cold air passed through the refrigerator compartment can be increased, so that the foodstuff Cooling is promoted. At this time, after a certain period of time, the closing temperature of the flap 25 returns to normal, and the temperature of the refrigerator compartment 17 is set to the normal setting, which has the effect of preventing freezing of food in each stage of the refrigerator compartment due to overcooling.

(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. 4 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 operation state of the compressor 22, and the predetermined time T1
(Step 13).

During the remaining time, the temperature of the refrigerator compartment is set to a temperature t2 ° C. lower than the preset normal closing temperature of the damper device, and the temperature of the refrigerator compartment is reduced to a temperature lower than normal. Be replaced.

Next, the refrigerator compartment temperature detecting means 26 detects the temperature in the refrigerator compartment (Step 15). Then, the refrigerator compartment temperature determining means 27 determines whether the temperature in the refrigerator compartment is higher or lower than the set temperature of the opening / closing of the damper device 24 (Step 16).

That is, if the temperature of the refrigerator compartment is higher than the set temperature of the damper device, the damper device control means 39 opens the damper device 24 (Step 1).
7).

On the other hand, when the temperature in the refrigerator compartment is lower than t2 ° C.
When it is determined that the temperature is ° C, the damper device 24 is closed (Step 18), the closed set temperature of the damper device 24 is switched to the normal t1 ° C, and the refrigerator compartment temperature becomes the normal set temperature (Step 19).

In Step 20, the air circulation blower 29 is continuously operated by the air circulation blower control means 41 regardless of the set temperature of the damper device 24. Thereafter, the process returns to Step 1 again.

As described above, the closing of the flap 25 of the damper device 24 during the rapid cooling is delayed until the temperature of the refrigerator compartment 17 becomes lower than usual, so that the cool air flowing through the refrigerator compartment is reduced. The amount can be increased,
Food cooling is promoted. At this time, when the temperature of the refrigerator becomes lower than the set temperature due to the output of the temperature detector of the refrigerator, the flap 25 of the damper device 24 returns to the normal control, and the temperature of the refrigerator becomes the normal temperature. Room 1
7 has the effect that freezing due to supercooling of the food in each stage can be prevented.

[0062]

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 deep side of each stage in the refrigerator compartment, and is close to the heat insulating wall. Both ends are preferentially cooled, and the temperature distribution in the left-right direction of the refrigerating 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 deodorizing means provided in the air circulation duct efficiently collects and adsorbs the intake air component.

Further, the quenching zone facing the lowermost air circulation blower is naturally provided with a tendency that cold air tends to stagnate and become low temperature, and when the compressor is stopped, it is provided at a much higher position through an open air discharge port. The air in the refrigerating room is concentrated and sent from the air intake port, and when the compressor is operating, the cool air supplied from the cooler is directly discharged to the rapid cooling zone via the air circulation duct by the air circulation blower. Cooling is facilitated.

Further, during the rapid cooling, the closing of the flap of the damper device is delayed until the temperature of the refrigerator compartment becomes lower than usual, thereby facilitating the cooling of the food in the rapid cooling zone. At this time, after a lapse of a predetermined time, or when it is determined that the temperature of the refrigerator compartment is low by the refrigerator temperature determining means, the closing temperature of the flap of the damper device returns to normal, and the temperature setting of the refrigerator compartment becomes the normal setting. Because of the switching, it is possible to prevent freezing due to overcooling of the food in each stage of the refrigerator compartment other than the rapid cooling zone.

As a result, the deterioration of the quality of the food due to the temperature is suppressed, and the practical effects such as being able to respond quickly to the food and being used for preparing the food such as removing the heat of the food are extremely enhanced. 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 control flowchart of a refrigerator according to a second embodiment of the present invention.

FIG. 5 is a timing chart of a refrigerator showing one embodiment of the present invention.

FIG. 6 is a longitudinal sectional view of a conventional refrigerator.

[Explanation of symbols]

 13 Refrigerator body 17 Refrigerator room 18 Freezer room 20 Cooler 21 Blower 23 Cold air discharge duct 24 Damper device 25 Flap 26 Refrigerator room temperature detecting means 27 Refrigerator room temperature judging means 28 Air circulation duct 29 Air circulation blower 30 Air inlet 31 Air Discharge port 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 blowing air to the freezing room and the refrigerator room,
An air circulation duct vertically provided at a central rear portion inside the refrigerator compartment, a deodorizing means provided in a part of the air circulation duct, an air circulation blower provided at a lowermost portion, and facing the air circulation blower. A quenching zone configured at the lowermost stage of the refrigerator compartment, an air discharge port opened to the quenching zone, an air intake port provided at each upper stage, and at both ends at a predetermined distance from the air circulation duct. A cool air discharge duct that is provided in a vertical direction and discharges cool air from the blower, a damper device that controls a flow rate by opening and closing a flap provided between the cool air discharge duct and the cooler, and a temperature of the refrigerator compartment. A temperature detecting means for detecting, and a control device for operating the air circulation blower in a normal state when the compressor is stopped and for continuously operating for a fixed time during rapid cooling. Based on the output of the temperature detecting means of the refrigerating compartment to delay the closing the flap to a temperature of the refrigerating compartment than usual is low, becomes switched constant after time, the flap closes control at normal set 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 blowing air to the freezing room and the refrigerator room,
An air circulation duct vertically provided at a central rear portion inside the refrigerator compartment, a deodorizing means provided in a part of the air circulation duct, an air circulation blower provided at a lowermost portion, and facing the air circulation blower. A quenching zone configured at the lowermost stage of the refrigerator compartment, an air discharge port opened to the quenching zone, an air intake port provided at each upper stage, and at both ends at a predetermined distance from the air circulation duct. A cool air discharge duct that is provided in a vertical direction and discharges cool air from the blower, a damper device that controls a flow rate by opening and closing a flap provided between the cool air discharge duct and the cooler, and a temperature of the refrigerator compartment. A temperature detecting means for detecting, and a control device for operating the air circulation blower in a normal state when the compressor is stopped and for continuously operating for a fixed time during rapid cooling. The delay in closing the flap until the temperature of the refrigerator is lower than normal based on the output of the temperature detection means of the refrigerator, and the control of closing the flap at the normal set temperature based on the output of the temperature detection means of the refrigerator Refrigerator that is switched to.