JPH09303935A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function, high in cost performance, by increasing the effects of an air circulation duct and an air circulating fan, in a forced ventilation type refrigerator provided with a fan for circulating air in the refrigerator except a fan for cooling. SOLUTION: An air circulating fan 29 is provided with a controller, operating the fan during the stopping of a compressor in usual and operating the same continuously for a given period of time upon rapid cooling, whereby temperature distribution in the vertical and lateral directions, in a refrigerating chamber is averaged. Besides, smell constituents are recovered and adsorbed efficiently by a deodorizing means provided in an air circulation duct. Further, refrigerant is conducted to flow through a rapid cooling zone concentrically whereby heat exchange on the surface of foods is improved and the effect of promotion of cooling can be obtained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a forced ventilation system,
The present invention relates to a refrigerator equipped with 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. 4 shows the structure of a conventional forced ventilation type refrigerator in which a blower for air circulation is installed in the 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 in the upper part and a refrigerating compartment 5 in the lower part.

[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

Reference numeral 8 denotes a glass tube type defrosting heater which is provided below the cooler 6 and performs a heating defrosting action, and an adsorption type decomposition 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 blower 7 are operating, the air circulation blower 11 is not energized, and the freezer compartment 4 and the refrigerating compartment 5 are cooled to a predetermined temperature.

During this time, the odor components in the room are adsorbed on the adsorption type pyrolysis catalyst layer of the defrost heater 8. Thereafter, when the operation time of the compressor is integrated for a predetermined time, the defrost heater 8
, The deodorizing action of the cooler 6 is performed, and the adsorption type pyrolysis 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 cooling air circulation to the defrost heater 8 is stopped. However, since the air circulating blower 11 in the refrigerating room 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 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.

[0010]

In this refrigerator, an air circulation duct and an air circulation blower are provided separately from the cooling blower, and the deodorizing means is provided in the circulation air passage to enhance the deodorizing effect. However, the other purpose and effect of providing an air circulation duct and a fan for air circulation were not 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]

In order to solve this problem, the present invention provides an air circulation duct which is vertically provided in a deep center portion of a refrigerating chamber, 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 formed at the lowest stage of the refrigerating chamber facing the air circulation blower, an air discharge port opened to the quenching zone, and communicating with each upper stage A cold air discharge duct for discharging cool air from the blower, which is vertically provided at both inner ends with a predetermined interval from the air intake port and the air circulation duct, the air intake port having a smaller opening area in order from the upper side. The air circulation blower is provided with a control device that is normally operated when the compressor is stopped, and is continuously operated for a fixed time 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 chamber, and the both end portions which are close to the heat insulating wall and have a distributionally higher temperature are preferentially cooled. Then, the temperature distribution in the horizontal direction of each stage of the refrigerator compartment is averaged. In addition, during operation of the air circulation blower, the upper and lower air is exchanged through the air circulation duct due to the stirring action of the air in the refrigerator. At this time, since the opening area of the air intake port is larger toward the upper side, warm air with a small specific gravity is likely to stay, and the upper air located farthest from the air circulation blower is preferentially ensured. It becomes possible to stir, and the temperature distribution in the vertical direction of the refrigerator compartment is also averaged.

The odorous component is efficiently collected and adsorbed by the deodorizing means provided in the air circulation duct.

Further, in the quenching zone facing the lowermost air circulation blower, cold air is naturally liable to settle and the temperature tends to be low. At the same time, when the compressor is stopped, the air is discharged to each upper stage through the open air discharge port. Since the air in the refrigerating chamber is concentratedly sent from the air intake port provided, the heat exchange efficiency of the food surface in the quenching zone is improved, and the cooling is promoted.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention includes a main body and a door made of a heat insulating material, a freezer compartment and a refrigerating compartment formed in the main body, a compressor, a condenser and a cooler. Refrigeration cycle consisting of, etc., a blower for forcedly ventilating the cool air cooled by the cooler into the freezing compartment and the refrigerating compartment, an air circulation duct provided in the vertical direction at the inner center of the refrigerating compartment, and at the bottom. An air circulation blower provided, a quenching zone formed at the lowest stage of the refrigerating chamber facing the air circulation blower, an air discharge port opening to the quenching zone, and communicating with each upper stage and opening sequentially from the top An air intake port provided so as to have a narrow area; and a cool air discharge duct for discharging cool air from the blower, which is provided vertically at both inner ends with a predetermined distance from the air circulation duct. When the compressor is stopped It is configured to operate the air circulation blower.During operation of the compressor and the blower, cool air is discharged from both ends of the inner deep surface of each stage in the refrigerating chamber, and the temperature is distributed in a distributed manner because it is close to the heat insulation wall. Both ends that become higher are preferentially cooled, and the temperature distribution in the left-right direction of each stage of the refrigerating room is averaged. In addition, during operation of the air circulation blower, the upper and lower air is exchanged through the air circulation duct due to the stirring action of the air in the refrigerator.

At this time, since the opening area of the air intake port is larger toward the upper side, warm air having a small specific gravity is likely to stay, and the upper air located farthest from the air circulation blower is preferentially given. Therefore, the temperature distribution in the vertical direction of the refrigerating room can be averaged.

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

Further, in addition to the fact that the quenching zone facing the lowermost air circulation blower is liable to settle cold air from the beginning, the temperature tends to be low, and when the compressor is stopped, the air is discharged to each upper stage through the open air discharge port. The air in the refrigerating chamber is intensively fed from the provided air intake port, so that the heat exchange efficiency of the food surface in the quenching zone is improved and the cooling is promoted.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG. (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 a refrigerator according to an embodiment of the present invention. In FIGS. 1 and 2, reference numeral 13 denotes a main body of a refrigerator constituted by a heat insulating material 14. Partition walls 15 and 16 partition a cooling room 17 in an upper part, a freezing room 18 in a middle part, and a vegetable room 19 in a lower part. 20 is a refrigerating cycle cooler, 21
Is a blower for forcedly passing the cool air cooled by the cooler 20 into each of the chambers, 22 is a compressor provided at the bottom of the main body, and the blower 21 and the compressor 22 are configured to operate in synchronization with each other. Has been done.

Reference numeral 23 denotes a cool air discharge duct for discharging the cool air forcedly ventilated by the blower 21 into the refrigerating compartment 17, which is provided vertically near both ends of the inner surface of the refrigerating 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 is a damper device provided between the cooler 20 and the cool air discharge duct 23, and has the function of controlling the air volume 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.

Reference numeral 28 denotes an air circulation duct provided vertically at the center of the inner surface of the refrigerating chamber 17, and the cold air discharge duct 2 is provided.
3 are arranged at a predetermined interval. Reference numeral 29 denotes an air circulation blower provided at the lowermost part of the air circulation duct 28, which sucks air in the refrigerating room through a plurality of air suction ports 30 opened in the air circulation duct 28 so as to correspond to respective upper stages. The air is discharged from the air discharge port 31 opened on the front surface.

Here, the opening area of the air intake port 30 is maximum at the upper part, and is gradually narrowed downward. Further, 32 is a quenching zone which is formed at the lowest stage of the refrigerating compartment 17 facing the air circulation blower 29. 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 formed 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 to detect 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 39 denotes the refrigerating compartment temperature determining means 2
7, a freezer compartment temperature determination means 36, and 40 are compressor control means for instructing the operation of the compressor based on the output of the freezer compartment temperature determination means 36.

Reference numeral 41 is an air circulation blower control means for instructing the operation of the air circulation blower 29 based on the output of the freezer compartment temperature determination means 36.

The operation of the above arrangement will be described with reference to the flow chart of FIG.

First, the freezing compartment temperature detecting means 35 detects the temperature in the freezing compartment (Step 1). Then, the freezing compartment temperature determination means 36 determines whether the temperature in the freezing compartment is higher or lower than the ON / OFF set temperature (Step 2). 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).
3) Next, the operation of the air circulation blower 29 is stopped by the air circulation blower control means 41 (Step 4).
On the other hand, if the temperature in the freezer compartment is lower than the OFF set temperature, the compressor control means 40 stops the compressor (Step).
5).

Next, the air circulation blower control means 41 operates the air circulation blower 29 (Step).
6). Next, the refrigerating compartment temperature detecting means 26 detects the temperature in the refrigerating compartment 17 (Step 7).

Then, the refrigerating compartment temperature determining means 27 determines whether the temperature in the refrigerating compartment 17 is higher or lower than the open / close set temperature (Step 8).

That is, if the temperature inside the refrigerating chamber is higher than the open set temperature, the damper device control means 41 opens the damper device (Step 9). On the other hand, if the temperature in the refrigerating compartment is lower than the set temperature for closing, the damper device is closed (Step 10).

As described above, while the compressor 22 is in operation, the blower 21 is also operated at the same time, and the cold air cooled by the cooler 20 is cooled by the cold air discharge duct 23 through the cold air discharge ports 42 to both ends of the refrigerating chamber 17. It is discharged in the vicinity. 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 circulation blower 29 is operated, and the air in the refrigerating room is sucked through the air suction ports 30 provided at each stage of the refrigerating chamber 17 except the lowermost stage, and the inside of the air circulating duct 28 is sucked. Through the deodorizing means 34, and the concentrated air is discharged to the quenching zone from the air outlet 31 that is opened at the lowest stage. For this reason, the efficiency of adsorption to the deodorizing means 34 is enhanced, and deodorization is promoted by the oxidative decomposition action of the low temperature active catalyst, and at the same time, the refrigerating room air is discharged with a small resistance into the quenching zone 32 which is confronted and stored at an arbitrary position. Promotes cooling of foods over a wide area.

Further, in this state, the upper and lower air is exchanged through the air circulation duct 28 by the stirring action of the air in the refrigerator. At this time, since the opening area of the air suction port 30 is larger toward the upper side, warm air having a small specific gravity is likely to stay, and the upper air that is difficult to be sucked in is located because it is located farthest from the air circulation blower. It is possible to preferentially and reliably stir, and the temperatures in the vertical direction between the stages partitioned by the plurality of shelves 43 are averaged.

In this way, the temperature can be averaged over the top, bottom, left, and right in the refrigerating compartment, and the food can be stored at a predetermined temperature in any place in the refrigerator. As a result, the deterioration of quality due to temperature is suppressed, and it is possible to respond quickly to food.
It has the effect of significantly enhancing the practical effects such as being able to be used for preparing food such as rough heat of food.

[0037]

As described above, according to the present invention, during the operation of the compressor and the blower, the cool air is discharged from both end portions of the deep surface of each stage in the refrigerating chamber, and the temperature rises distributively near the heat insulating wall. Both ends are preferentially cooled, and the temperature distribution in the left-right direction in each stage of the refrigerating room is averaged. In addition, during operation of the air circulation blower, the upper and lower air is exchanged through the air circulation duct due to the stirring action of the air in the refrigerator. At this time, since the opening area of the air intake port is larger toward the upper side, warm air with a small specific gravity is likely to stay, and the upper air located farthest from the air circulation blower is reliably prioritized. It becomes possible to stir, and the temperature distribution in the vertical direction of the refrigerator compartment is also averaged.

The odorous 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 is liable to settle and the temperature tends to be low, and when the compressor is stopped, the air is discharged to each upper stage through the open air discharge port. Since the air in the refrigerating chamber is intensively sent from the air intake port provided, the heat exchange efficiency of the food surface in the quenching zone is improved, and the advantageous effect that the cooling is promoted is obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a refrigerator according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view and a control block diagram showing a refrigerator according to an embodiment of the present invention.

FIG. 3 is a control flowchart showing a refrigerator according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional view of a conventional refrigerator.

[Explanation of symbols]

 13 Refrigerator Main Body 14 Heat Insulation Material 17 Refrigerator Room 18 Refrigerator 20 Cooler 21 Blower 22 Compressor 23 Cold Air Discharge Duct 28 Air Circulation Duct 29 Air Circulation Blower 30 Air Intake Port 31 Air Discharge Port 32 Rapid Cooling Zone 34 Deodorizing Means

Claims (1)

[Claims] 1. 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,
A refrigeration cycle including a cooler, a blower for forcedly ventilating the cool air cooled by the cooler into the freezing compartment and the refrigerating compartment, an air circulation duct vertically provided at the inner center of the refrigerating compartment, and a lowermost portion. A blower for air circulation provided in, a quenching zone configured in the lowest stage of the refrigerating chamber facing the air blower for air circulation, an air discharge port opened in the quenching zone, and communicating with each stage upwards in order from the top An air intake port provided so that the opening area is narrowed, and a cool air discharge duct that discharges cool air from the blower vertically provided at both ends at a predetermined distance from the air circulation duct,
A refrigerator configured to operate the air circulation blower when the compressor is stopped.