JP2003262448A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To cool a plurality of containers respectively to the suitable temperatures with a low-cost structure in a refrigerator with a plurality of containers installed therein. <P>SOLUTION: This refrigerator is provided with a storage chamber 1 formed of a heat-insulated box body 13 and a door 2; a plurality of containers 8-10 installed in a vertical direction inside the storage chamber 1; an evaporator 4 installed in an evaporator chamber 3 to form a part of a refrigerating cycle; a blower fan 5 for blowing cooling air in the evaporator chamber 3; ducts 6, 7 for guiding the cooling air that has passed through the evaporator 4, to the plurality of containers 8-10; and a damper 12 for controlling the cooling air supply quantity of the duct 7. The bottom face of the container 8 in an upper stage out of the plurality of containers 8-10 is formed with an opening 11 communicating with the container 9 in a lower stage. The duct 6 forms ventilation flues for guiding the cooling air to the plurality of containers 8-10 independently. The damper 12 is arranged in the ventilation flue for guiding the cooling air to the containers 9, 10 in the lower stage excluding the ventilation flue for guiding the cooling air to the container 8 in the upper stage. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a refrigerator,
In particular, it is suitable for a refrigerator in which a plurality of containers are installed in the storage chamber.

[0002]

2. Description of the Related Art As a refrigerator in which a plurality of containers are installed in a storage chamber of Prior Art 1, there is a technique described in Japanese Patent Laid-Open No. 11-14229. In this prior art 1, a plurality of containers are installed in the up-down direction inside the freezer compartment, a blower fan for supplying cooling air from the rear of the upper container is provided, and the front of the bottom surface of each container is directed rearward. An opening is provided. Thus, the cooling air that has cooled the upper container flows into the lower container through the opening to cool the lower container.

Further, the refrigerator of the prior art 2 has a storage chamber formed by an insulated box and a door, and a plurality of storage chambers for cooling air passing through the evaporator. There is a duct provided with a duct and a plurality of independent dampers for controlling the cooling air supply amount of each ventilation passage.

[0004]

However, in the prior art 1, since it is not possible to adjust the distribution of the cooling air from the rear for each of the containers installed in the vertical direction,
There is a problem that it is difficult to cool the plurality of containers to temperatures suitable for each. In particular, the cooling air supplied to the upper container flows out from the bottom surface of this upper container to the lower container, so the cooling air supplied to the lower container increases, and the upper container becomes relatively undercooled. However, there is a problem that the lower container is likely to be overcooled.

Further, in the prior art 1, since the cooling air is simply supplied to the upper and lower vessels through the space opened from the blower fan, the wind speeds for uniformly cooling the upper and lower vessels, respectively. There is a problem that it is difficult to make the distribution and the upper container cannot be rapidly cooled as a specific container.

On the other hand, in the prior art 2, since the plurality of storage chambers are independently constituted by the box body and the door which are respectively insulated, there is a problem that the structure becomes expensive. Further, in the related art 2, since the dampers are respectively arranged in the ventilation passages that independently guide the cooling air to the plurality of storage chambers, there is a problem that the number of dampers increases and the cost becomes high.

In the prior arts 1 and 2, no consideration has been given to disposing a plurality of containers in each of a plurality of storage chambers and cooling a large number of containers to an appropriate temperature.

A first object of the present invention is to provide a refrigerator having an inexpensive structure and capable of cooling a plurality of containers to temperatures suitable for each.

A second object of the present invention is to provide a refrigerator which has an inexpensive structure and is capable of cooling a plurality of containers to temperatures suitable for the respective containers and capable of uniformly cooling the interiors of the plurality of containers. To do.

A third object of the present invention is to provide a refrigerator which has an inexpensive structure and is capable of cooling a plurality of containers to temperatures suitable for the respective containers and also capable of rapidly cooling a specific container. It is in.

A fourth object of the present invention is to provide a refrigerator capable of cooling a large number of containers, which are respectively installed in a plurality of storage chambers, to temperatures suitable for the containers.

Other objects and advantages of the present invention will become apparent from the following description.

[0013]

[MEANS FOR SOLVING THE PROBLEMS] A refrigerator according to the present invention for achieving the above-mentioned first object comprises a storage chamber formed by a heat-insulated box and a door, and a plurality of storage chambers vertically arranged in the storage chamber. , An evaporator that is installed in the evaporator chamber and forms a part of a refrigeration cycle, a blower fan that blows the cooling air in the evaporator chamber, and the cooling air that has passed through the evaporator. And a damper for controlling the cooling air supply amount of the duct, the plurality of containers form an opening in the bottom surface of the upper container to communicate with the lower container, and the duct includes the plurality of containers. An air passage for independently guiding the cooling air is formed in the container, and the damper is disposed in the air passage for guiding the cooling air to the lower container except the air passage for guiding the cooling air to the upper container.

A refrigerator according to the present invention for achieving the second object comprises a storage chamber formed by a heat-insulated box and a door, a plurality of containers installed above and below the storage chamber, and an evaporator. An evaporator that is installed in the chamber and forms a part of a refrigeration cycle, a blower fan that blows cooling air for the evaporator chamber, a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, and And a damper for controlling the cooling air supply amount of the duct, the plurality of containers, at the bottom front part of the container of the upper stage, forming an opening that communicates with the container of the lower stage, the duct to the plurality of containers. An air passage for independently guiding the cooling air is formed from the rear side, and the damper is arranged in the air passage for guiding the cooling air to the lower container except the ventilation passage for guiding the cooling air to the upper container. .

In the refrigerator according to the present invention for achieving the third object, a storage chamber formed by an insulated box and a door, a specific container installed in the storage chamber, and a storage chamber in the storage chamber are provided. Another container installed below the specific container, an evaporator installed in the evaporator chamber and forming a part of a refrigeration cycle, a blower fan that blows cooling air in the evaporator chamber, and the evaporation A duct that guides the cooling air that has passed through the container to the specific container and the other container, a damper that controls the cooling air supply amount of the duct, a damper control unit that controls the damper, and a duct inside the specific container. A rapid cooling switch for setting rapid cooling is provided, the specific container forms a bottom opening facing the upper surface opening of the other container located immediately below, and the duct forms the specific container and the other container. To cooling air An independent ventilation passage is formed, the damper is disposed in the ventilation passage that guides the cooling air to the other container except the ventilation passage that guides the cooling air to the specific container, and the damper control means performs the rapid cooling. The configuration has a function of closing the damper based on the setting of quick cooling of the switch.

The refrigerator of the present invention for attaining the fourth object comprises a heat-insulated box body, a storage chamber formed on the left and right by a door and a vertical partition of the box body, and in each of the storage chambers. A large number of containers installed in the upper and lower, and an evaporator installed in the evaporator chamber and forming a part of the refrigeration cycle,
A blower fan that blows cooling air in the evaporator chamber and a duct that guides the cooling air that has passed through the evaporator to the multiple containers are provided, and the duct independently guides the cooling air to the multiple containers. Forming a passage, the plurality of containers in the storage chamber form an opening communicating with a lower container from the upper container on the left and right alternately, and the vertical partition stores left and right storage at a position corresponding to the container opening. The purpose is to form an opening that connects the chambers.

Other means of the present invention will be apparent from the following description.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A plurality of embodiments of the present invention will be described below with reference to the drawings. In the second embodiment, the first
While omitting illustrations and overlapping descriptions of the parts common to the first embodiment, the same or corresponding parts as those of the first embodiment will be described with reference to the reference numerals used in the first embodiment.

A first embodiment of the present invention will be described with reference to FIGS. 1 is a longitudinal sectional view of a main part of a refrigerator according to a first embodiment of the present invention during normal cooling, FIG. 2 is a vertical sectional view of a main part during upper concentrated cooling of the refrigerator, and FIG. 3 is a flow velocity distribution diagram in FIG. 4 is a sectional perspective view of the upper container used in the refrigerator of FIG. 1, and FIG. 5 is a sectional perspective view showing a modified example of the upper container of FIG.

As shown in FIGS. 1 and 2, a storage chamber 1 which constitutes a freezing chamber is formed by a door 2 and a box 13 which are respectively filled with a heat insulating material, and together with a refrigerating room, a vegetable room and the like not shown. It constitutes one of the refrigerator storage rooms. The front of the box body 13 is opened, and the door 2 is provided so as to open and close this opening. A plurality of containers 8 to 10 are installed in the storage room 1. As described above, the plurality of containers 8 to 10 are installed in the same storage chamber 1 to form the plurality of cooling chambers, and the plurality of chambers are independently configured by a box body and a door that are respectively insulated. It is a cheaper structure than the ones.

The containers 8-10 for storing and storing articles are
The upper container 8, the middle container 9, and the lower container 10 are sequentially installed in the vertical direction. The upper container 8 is used as a specific container, and the middle container 9 and the lower container 10 are used as different containers. The total volume of the other containers 9 and 10 is twice or more than the volume of the specific container 8. Further, each container 8 to 10 has an opening formed on the upper surface and an opening 11 on the bottom.
Are formed. The open portion is formed by an opening whose upper surface is entirely open. The opening 11 is formed in the front part of the bottom surface. The containers 8 to 10 are heated by the heat that enters from the outside of the freezing room through the door 2 and the box body 13.

An evaporator chamber 3 which is separated from the storage chamber 1 is provided behind the storage chamber 1. An evaporator 4 and a blower fan 5 are installed inside the evaporator chamber 3. The evaporator 4 is connected to form a part of the refrigeration cycle and is cooled to a low temperature (for example, -20 ° C) during the operation of the refrigeration cycle. The blower fan 5 is disposed above the evaporator chamber 3 so as to blow the cooling air in the evaporator chamber 3 and is positioned behind the upper container 8.

An upper blower duct 6 is provided between the blower fan 5 and the upper vessel 8. As a result, the cooling air in the evaporator chamber 3 is supplied from the rear of the upper container 8 into the upper container 8 through the ventilation passage of the upper air duct 6. A middle-lower stage air duct 7 is provided between the blower fan 5 and the middle-stage container 9 and the lower-stage container 10. The upper blower duct 6 and the middle lower blower duct 7 constitute a cooling air supply duct of the blower fan 5, and each ventilation passage is formed independently. The outlet side of the middle-lower stage air duct 7 is branched into a plurality of duct portions 7a and 7b. The middle blower duct portion 7 extends so as to face the rear portion of the upper surface of the middle container 9. As a result, the cooling air in the evaporator chamber 3 is supplied from the rear of the middle stage container 9 into the middle stage container 9 through the ventilation passage of the middle stage ventilation duct 7a. Further, the lower stage air duct 7b extends so as to face the rear portion of the upper surface of the lower stage container 10. As a result, the cooling air in the evaporator chamber 3 is supplied from the rear of the lower container 10 into the lower container 10 through the ventilation passage of the lower air duct 7b.

A damper 12 for controlling the amount of cooling air supplied is provided in the middle and lower stage air duct 7. This damper 12
Is provided on the inlet side of the ventilation passage of the middle and lower air ducts 7, and controls the amount of cooling air supplied to the air passages of the middle air duct 7a and the lower air duct 7b. Further, the damper 12 is configured to be rotatable around one side as an axis, and can block or limit the flow of air between the blower fan 5 and the middle-lower stage blower duct 7.

A return port 14 is formed in the lower portion of the evaporator chamber 3. The return port 14 is located rearward of the lower container 10 and is provided facing downward. Thereby, the cool air mainly discharged from the opening 11 of the lower container 10 is returned to the evaporator chamber 3 through the return port 14.

The storage chamber sensor 16 detects the temperature of the storage chamber 1 (specifically, the temperature of the lower container 10) and is installed on the inner wall surface of the box 13 on the side of the lower container 10. . Since the cooling air supplied into the storage chamber 1 finally collects in the lower container 10, the temperature of the storage chamber 1 can be detected by detecting the temperature of the lower container 10.

The upper container sensor 15 detects the temperature of the upper container 8 and is installed on the inner wall surface of the box 13 on the side of the upper container 8. The upper container sensor 15 is a temperature detecting means dedicated to the upper container 8 independent of the storage chamber sensor 16.

The damper control means 22 is an operation control means 23.
And has a function of controlling the damper 12 based on the detection signals of the upper container sensor 15, the storage chamber sensor 16 and the rapid cooling switch 24. The quick cooling switch 24 is installed on the front surface of the refrigerating room door or the like so that the user can set quick cooling. The operation control unit 23 has a function of operating the refrigeration cycle and the blower fan 5 when the storage chamber sensor 16 detects that the storage chamber temperature has risen to a predetermined temperature or higher.

The refrigeration cycle is operated to cool the evaporator 4, and the damper 12 is opened as shown in FIG.
When the blower fan 5 is rotated while the air is allowed to flow between the blower fan 5 and the middle-lower stage blower duct 7, the air in the storage chamber 1 flows into the evaporator chamber 3 from the return port 14. Then, it is cooled through the evaporator 4. The cooled air (referred to as cooling air) passes through the blower fan 5 and passes through the upper blower duct 6 and the middle lower blower duct 7 to the inside of each of the upper container 8, the middle container 9, and the lower container 10 as indicated by solid arrows. Supplied from

The cooling air supplied to the inside of the upper container 8 cools the inside of the upper container 8 and then flows out to the middle container 9 through the opening 11 at the front part of the bottom surface of the upper container 8. Cooling air from the middle-stage air duct 7a and cooling air that has passed through the upper-stage container 8 are supplied to the inside of the middle-stage container 9. These air cools the inside of the middle container 9 while mixing, and then flows out to the lower container 10 through the opening 11 at the front part of the bottom surface of the middle container 9. Cooling air from the lower air duct 7b and cooling air that has passed through the middle vessel 9 are supplied into the lower vessel 10. These air cools the inside of the lower container 10 while mixing, and then flows out through the opening 11 at the front part of the bottom surface of the lower container 10.

Lower container 1 through upper container 8 and middle container 9
The air flowing out from 0 is heated when cooling the inside of each container, returns to the evaporator chamber 3, and is cooled by the evaporator 4.
It is again supplied to each container 8-10.

The cooling state in the storage chamber 1 is shown by the streamline of the cooling air as shown in FIG. As is clear from FIG. 3, the streamline distribution in each of the containers 8 to 10 is uniform in each room.

Then, the damper control means 22 controls the opening angle of the damper 12 based on the detection signal of the storage chamber sensor. Thereby, each container 8-10 can be cooled to the temperature suitable for each.

In this way, when the storage room temperature drops below a predetermined temperature, the storage room sensor 16 detects this,
The operation control means 23 stops the refrigeration cycle and the blower fan 5.

Cooling of the storage chamber 1 with the damper 12 open as described above is called normal cooling.

When the user of the refrigerator uses the upper container 8 for rapid cooling, he presses the rapid cooling switch 24. When the quick cooling switch 24 is pressed, the damper control means 22 closes the damper 12 to close the blower fan 5 as shown in FIG.
The flow of air between the lower and middle lower air duct 7 is blocked. Further, the operation control means 2 is set by setting the quick cooling switch 24.
3 operates the refrigeration cycle to cool the evaporator 4 and rotate the blower fan 5.

At this time, similarly to the above-described normal cooling, the air in the storage chamber 1 flows into the evaporator chamber 3 from the return port 14 and is cooled through the evaporator 4, but the cooling air passes through the blower fan 5. It is supplied only to the inside of the upper container 8 through the upper air duct 6. Since all of the cooling air is supplied to the upper container 8, the upper container 8 is cooled more strongly than during normal cooling.

The cooling air supplied to the inside of the upper container 8 cools the inside of the upper container 8, and then flows out to the middle container 9 through the opening 11 at the front part of the bottom surface of the upper container 8. Although the cooling air from the middle air duct 7a is not supplied to the inside of the middle container 9, the cooling air that has passed through the upper container 8 is supplied and the inside of the middle container 9 is cooled. The air that has cooled the inside of the middle container 9 flows out to the lower container 10 through the opening 11 at the front part of the bottom surface of the middle container 9. Although the cooling air from the lower air duct 7b is not supplied to the inside of the lower container 10, the cooling air that has passed through the middle container 9 is supplied and the inside of the lower container 10 is cooled. The air that has cooled the inside of the lower container 10 flows out through the opening 11 in the front portion of the bottom surface of the lower container 10.

The air flowing out from the lower vessel 10 is returned to the evaporator chamber 3, cooled by the evaporator 4, and then supplied again to the upper vessel 8. The cooling of the storage chamber 1 with the damper 12 closed as described above is called upper central cooling.

When the upper container sensor 15 detects that the temperature inside the upper container has dropped to a predetermined temperature or lower and the storage chamber sensor 16 detects that the temperature inside the storage chamber has dropped to a predetermined temperature or lower, the operation is started. The control means 23 stops the refrigeration cycle and the blower fan 5.

The damper control means 22 opens and closes the damper 12 so that the difference between the temperature detected by the upper container sensor 15 and the temperature detected by the storage chamber sensor 16 falls within a predetermined range during operation of the refrigeration cycle. For example, when the temperature detected by the upper container sensor 15 is higher than the temperature detected by the storage chamber sensor 16 by a predetermined temperature range or more when the damper 12 is opened for normal cooling, the damper control means Reference numeral 22 closes the damper 12 to increase the supply of cooling air to the upper container, thereby performing the upper concentrated cooling.

Also, when the upper container 8 is cooled by the upper concentrated cooling and the temperature detected by the upper container sensor 15 is lower than the temperature detected by the storage chamber sensor 16 by less than a predetermined temperature range, the damper control means 22 is provided. Opens the damper 12 and increases the cooling air supply to the other vessels 9, 10.

Further, not only the damper 12 is simply opened and closed, but also the angle of the damper 12 is continuously changed to adjust the cooling air supply amount to perform more detailed cooling. You can

As described above, by controlling the damper 12 so that the difference between the temperature detected by the upper container sensor 15 and the temperature detected by the storage chamber sensor 16 is within a predetermined range, the cooling of each container 8-10 is performed. The excess and deficiency can be resolved.
In other words, by prioritizing the temperature of the upper container 8 detected by the upper container sensor 15 over the temperature of the storage chamber 1 detected by the storage chamber sensor, the stored material in the upper container 8 is preferentially and surely cooled. In addition to the above, when a new stored item is introduced into the upper container 8, it can be rapidly cooled.

As shown in FIG. 4, the upper container 8 is provided with an opening 11 at the front part of the bottom surface. The reason for this is as follows. When the openings are provided dispersedly over the entire bottom surface of the upper container 8 or when the openings are provided at the rear portion of the bottom surface, the cooling air does not spread to the front portion of the upper container 8 directly from these openings. There is a problem in that the entire inside of the upper container 8 cannot be cooled evenly due to the outflow. When an opening is provided on the wall surface facing the door of the upper container 8,
Although the cooling air spreads to the front of the upper container 8, it flows out into the space between the door 2 and the upper container 8 and there is a problem that the middle container 9 cannot be cooled by using this outflowing cooling air. On the other hand, by providing the opening 11 at the bottom front part of the upper container 8, the cooling air supplied from the rear of the upper container 8 spreads to the front part of the upper container 8 to uniformly cool the inside of the upper container 8. At the same time, the middle stage container 9 can be cooled by utilizing the cooling air flowing out from the upper stage container 8. For the same reason, the openings 11 are also provided in the front portions of the bottom surfaces of the other containers 9 and 10.

When the door 2 is not a drawer door but a revolving door, and when the door 2 is opened and there is an opening on the wall surface facing the doors of the containers 8 to 10, the opening can be seen from the front to give a beautiful appearance. There is a risk of damage. For this reason, the opening is the container 8 ~
It is preferably provided on the front part of the bottom surface of 10.

A rib 17 is provided around the opening 11 of the upper container 8 for maintaining strength and preventing blockage. The openings 11 are provided on the left and right. An uneven portion 18 is provided on the entire bottom surface of the upper container 8 for the purpose of maintaining strength and preventing blockage. The concave-convex portion 18 is formed with a concave groove portion 19 that continuously extends to the rear surface side, both side surfaces, and the front surface side by slightly projecting the central portion of the bottom surface upward. The opening 11 and the rib 17 are formed at the bottom of the groove 19 on the front side. With this, even when the stored items are stored in the upper container 8, the ribs 17 and the concave groove portions 19 of the concave-convex portions 18 ensure the passage of the cool air, and the cooling air can flow downward through the openings. The other containers 9 and 10 are similarly formed.

The upper container 8 may be formed as shown in FIG. That is, the bottom surface of the upper container 8 is provided with the uneven portion 18 extending from the rear side to the front side, and the opening 11 is provided at a position of the concave groove portion 19 near the door. The containers 9 and 10 of the other stages may be configured similarly to the upper container 8.

In this modified example, when a stored item is stored in the upper container 8, the concave groove portion 19 of the uneven portion 18 when viewed from the inside of the upper container 8 serves as a passage for cool air. Upper container 8
When the cooling air inside the container reaches the bottom surface, it flows forward along the concave groove portion 19 when viewed from the inside of the container of the uneven portion 18,
It flows downward through the opening 11 provided on the door side of the groove.
The cooling air flows in the other containers 9 and 11 in the same manner.

In the case of the lower container 10, in addition to preventing clogging inside the container, it is possible to prevent clogging of the cold air passage outside the container. That is, when the bottom surface of the lower container 10 faces the bottom surface of the storage chamber 1 and the concave portion of the uneven portion 18 of the lower container 10 when viewed from the outside of the container causes the air after returning from the lower container to return to the evaporator chamber 3. It becomes the flow path. For example, even if the bottom surface of the box body 13 swells when the heat-insulating box body is foamed and the distance between the bottom surface of the storage chamber 1 and the bottom surface of the lower container 10 is reduced, the concave portion of the uneven portion 18 when viewed from the outside of the container is The passage can be secured and the blockage can be prevented.

Next, a second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a front view in which a main part of the refrigerator according to the second embodiment of the present invention is sectioned.

In the present embodiment, the storage compartment constituting the freezer compartment is formed by the left storage compartment 1A and the right storage compartment 1B which are partitioned by the vertical partition 20 into the left and right. A plurality of containers 8A to 9A are vertically installed in the left storage chamber 1A, and specifically, from the top, the upper left container 8A, the left middle container 9A, and the lower left container 10A.
Are installed in order. The right storage room 1B has a plurality of containers 8
B to 10B are installed vertically, and specifically, from the top, an upper right container 8B, a right middle container 9B, and a lower right container 10B are installed in this order.

In the storage chambers 1A and 1B, the upper left container 8A, the right middle container 9B, and the lower left container 10A having no bottom openings are provided.
And an upper right container 8B having an opening 11 on the bottom surface, a left middle container 9A, and a lower right container 10B are installed together. Further, the vertical partition 20 is provided with a vertical partition opening 21 that allows air in the left and right storage chambers 1A and 1B to communicate with each other. This opening 21 is formed in a portion corresponding to the upper and lower sides of each container,
It is formed corresponding to each opening 11.

The evaporator chamber, the evaporator and the blower fan are arranged behind the storage chambers 1A and 1B. The duct that guides the cooling air to each container by the blower fan is an upper duct that guides the cooling air to the upper containers 8A and 8B.
It is composed of a middle duct that guides the cooling air to the middle containers 9A and 9B, and a lower duct that guides the cooling air to the lower containers 10A and 10B. The upper duct is branched into upper ducts 6A and 6B, and the ventilation paths of the upper ducts 6A and 6B are opened behind the upper containers 8A and 8B. The middle duct is branched into middle ducts 7aA and 7aB, and the ventilation passages of the middle ducts 7aA and 7aB are opened to the rear of the middle containers 9A and 9B. The lower duct is the lower duct 7b
A, 7bB is branched, and the ventilation paths of the lower ducts 7bA, 7bB are opened to the rear of the lower vessels 10A, 10B. A damper is installed on the entrance side of the middle and lower ducts.

In this embodiment, the vertical partition opening 21 described above is used.
Since, for example, the cooling air flowing out from the bottom surface of the upper right container 8B flows into the right middle container 9B, it passes through the upper vertical partition opening 21 instead of flowing out from the bottom surface of the right middle container 9B. And flows into the left middle container 9A. Furthermore, the cooling air flowing out from the bottom surface of the left middle container 9A flows into the lower left container 10A, and instead of flowing out from the bottom surface of the lower left container 10A, it passes through the lower vertical partition opening 21 and passes to the lower right container 10B. Flows in. Further, the cooling air that has flowed into the lower right container 10B flows out from the opening 11 on the bottom surface and is returned to the evaporator chamber.

As described above, by installing the vertical partition opening 21, even if the storage chamber is divided into left and right parts and a container having no opening on the bottom surface is installed in the middle, cooling air is passed through the vertical partition opening 21. Can be lowered,
Excess or deficiency of cooling for each container can be suppressed.

[0057]

As is apparent from the above description, according to the present invention, it is possible to provide a refrigerator having an inexpensive structure and capable of cooling a plurality of containers to temperatures suitable for each.

Further, according to the present invention, it is possible to provide a refrigerator having an inexpensive structure, capable of cooling a plurality of containers to temperatures suitable for the respective containers, and uniformly cooling the insides of the plurality of containers. be able to.

Further, according to the present invention, it is possible to provide a refrigerator which has an inexpensive structure and can cool a plurality of containers to a temperature suitable for each, and at the same time, can cool a specific container rapidly. it can.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of essential parts of a refrigerator according to a first embodiment of the present invention during normal cooling.

FIG. 2 is a vertical cross-sectional view of a main part of the refrigerator at the time of concentrated cooling in the upper stage.

FIG. 3 is a flow velocity distribution diagram in FIG.

4 is a cross-sectional perspective view of an upper container used in the refrigerator of FIG.

5 is a cross-sectional perspective view showing a modified example of the upper container of FIG.

FIG. 6 is a front view in which a main part of a refrigerator according to a second embodiment of the present invention is sectioned.

[Explanation of symbols]

1 ... storage room (freezing room), 1A ... left storage room, 1B ... right storage room, 2 ... door, 3 ... evaporator room, 4 ... evaporator, 5 ... fan, 6 ... upper air duct, 7 ... middle Lower air duct, 7a
... middle stage air duct, 7b ... lower stage air duct, 8 ... upper stage container, 8A ... upper left stage container, 8B ... upper right stage container, 9 ... middle stage container, 9A ... left middle stage container, 9B right middle stage container, 10 ... lower stage container, 10A ... lower left container, 10B ... lower right container, 11 ...
Opening, 12 ... Damper, 13 ... Box, 14 ... Return port, 15
… Upper container sensor, 16… Storage room sensor, 17… Rib,
18 ... Uneven portion, 19 ... Recessed groove portion, 20 ... Vertical partition, 21 ...
Vertical partition opening, 22 ... Damper control means, 23 ... Operation control means, 24 ... Sudden cooling switch.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Nobuaki Kuriyama             800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi             Hitachi Tochigi Technology Co., Ltd. (72) Inventor Toshihiko Nagamori             800 Tomita, Ohira-cho, Shimotsuga-gun, Tochigi             Hitachi Tochigi Technology Co., Ltd.

Claims (8)

[Claims] 1. A storage chamber formed by a heat-insulated box and a door, a plurality of containers installed up and down in the storage chamber, and an evaporator installed in the evaporator chamber and forming a part of a refrigeration cycle. An air conditioner, a blower fan that blows cooling air in the evaporator chamber, a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, and a damper that controls a cooling air supply amount of the duct. The plurality of containers form an opening in the bottom surface of the upper container communicating with the lower container, the duct forms an air passage for independently guiding cooling air to the plurality of containers, and the damper is the upper container. Refrigerator characterized by being arranged in an air passage for introducing cooling air to the lower container, except for an air passage for introducing cooling air to the container. 2. A storage chamber formed by a heat-insulated box body and a door, a plurality of containers installed vertically in the storage chamber, and an evaporation device installed in the evaporator chamber and forming a part of a refrigeration cycle. An air conditioner, a blower fan that blows cooling air in the evaporator chamber, a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, and a damper that controls a cooling air supply amount of the duct. The plurality of containers form an opening in the front part of the bottom surface of the upper container, which communicates with the lower container, and the duct forms a ventilation path that independently guides cooling air from the rear to the plurality of containers. The refrigerator is characterized in that the damper is disposed in an air passage for introducing cooling air to the lower container except for an air passage for introducing cooling air to the upper container. 3. The refrigerator according to claim 1 or 2, wherein the lower container is composed of a plurality of containers and has a volume which is at least twice as large as that of the upper container. 4. The refrigerator according to claim 2, wherein the upper container is made of synthetic resin and has a recessed groove portion extending in the front-rear direction on the bottom surface. 5. A storage chamber formed by a heat-insulated box body and a door, a plurality of containers made up of a specific container and other containers installed above and below the storage chamber, and installed in the evaporator chamber, An evaporator that forms a part of a refrigeration cycle, a blower fan that blows cooling air for the evaporator chamber, a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, and a cooling air supply for the duct. A damper that controls the amount; a damper control unit that controls the damper; a first sensor that detects the temperature of the specific container; and a second sensor that detects the temperature of the other container. The container of which forms a bottom opening facing the upper surface opening portion of the other container located immediately below, the duct forms an air passage for independently guiding cooling air to the specific container and the other container, The damper is in front The damper control unit is arranged in an air passage for introducing cooling air to the other container except for an air passage for introducing cooling air to a specific container, and the damper control unit is configured to perform the operation based on the detection signals of the first sensor and the second sensor. A refrigerator having a function of controlling an opening angle of a damper. 6. The damper control means according to claim 5, wherein the damper control means has a function of prioritizing a detection signal of the second sensor over a detection signal of the first sensor to control an opening angle of the damper. Refrigerator to do. 7. A storage chamber formed by a heat-insulated box body and a door, a plurality of containers made up of a specific container and other containers installed above and below the storage chamber, and installed in the evaporator chamber. An evaporator that forms a part of a refrigeration cycle, a blower fan that blows cooling air for the evaporator chamber, a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, and a cooling air supply for the duct. A damper for controlling the amount, a damper control means for controlling the damper, and a rapid cooling switch for setting rapid cooling in the specific container are provided, and the specific container is provided in the other container immediately below. A bottom surface opening is formed facing the upper surface open portion, the duct forms a ventilation path that independently guides cooling air to the specific container and the other container, and the damper guides cooling air to the specific container. Down the road Except for the above, the refrigerator is arranged in a ventilation path for guiding cooling air to the other container, and the damper control means has a function of closing the damper based on the rapid cooling setting of the rapid cooling switch. 8. A heat-insulated box, a storage chamber formed by doors and two vertical partitions of the box, left and right storage chambers, a plurality of containers installed vertically in each of the storage chambers, and an evaporator chamber. An evaporator that is installed in and forms a part of a refrigeration cycle, a blower fan that blows cooling air in the evaporator chamber, and a duct that guides the cooling air that has passed through the evaporator to the plurality of containers, The duct forms a ventilation path that independently guides cooling air to the plurality of containers, and the plurality of containers in the storage chamber form an opening that communicates with the lower container from the upper container on the left and right sides alternately, The refrigerator characterized in that the vertical partition has an opening communicating with the left and right storage chambers at a position corresponding to the opening of the container.