JP2002188879A - Refrigerator and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator, in which cool air sent out from a cool-air force-circulation fan exclusively for a plurality of storage chambers is efficiently blown up without resistance, and a sufficient volume of diffused air is ensured. SOLUTION: In the refrigerator, there are provided a cool air forming chamber 10 behind a vegetable chamber 8, a first cooling device 12 exclusively for a refrigeration chamber 7 and the vegetable chamber 8. A first fan 13 for cool air force-circulation is provided above the cooling device 12, so that the cool air formed by the cooling device 12 is supplied through a cool air conduit 11 to the upper chamber 7. The cool air in the chamber 7 is supplied to the vegetable chamber 8 in the center, and returned through a cool-air return duct 14 in the back lower part to the cool air forming chamber 10. The revolution shaft 10 of the fan 13 is placed parallel with the duct 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to an apparatus for improving the cooling capacity of a plurality of storage rooms.

[0002]

2. Description of the Related Art In a refrigerator, for example, as shown in FIG. 4, the inside of a heat insulating box 1 formed by filling a foam heat insulating material 4 between an outer box 2 and an inner box 3 is divided into two upper and lower heat insulating partitions 5, 6. Partitioned by
Refrigerator room 7 at the top, vegetable room 8 at the center, freezer room 9 at the bottom
And a first cooler 12 dedicated to the refrigerating room 7 and the vegetable room 8 in a cool air generating room 10 provided behind the vegetable room 8, and a cool air above the first cooler 12. A first blower 13 for forced circulation is provided, and cool air generated by the first cooler 12 is supplied to the upper refrigerator compartment 7 through a cool air supply duct 11, and the inside of the refrigerator compartment 7 is provided. Is supplied to the vegetable room 8 at the center (middle stage), and the cold air generation chamber 10 is supplied from a cool air return duct 14 at the lower rear of the vegetable room 8.
And a second cooler 15 dedicated to the freezing chamber 9 and a second blower 16 for forced circulation of the cold air are provided in another cold air generating chamber 17 provided behind the freezing chamber 9.
The cool air generated by the second cooler 15 is supplied to the freezing chamber 9 by the second blower 16, and a cool air recirculation passage 18 provided at a lower rear portion of the freezing chamber 9 is provided. It is configured to return to the cooler 15 through the cooling device.

FIG. 2 shows a refrigeration cycle of the refrigerator described above. A compressor 20, a condenser 21, a three-way valve 22 for switching the traveling direction of the refrigerant, and a capillary tube 2 are shown.
3. A first cooler 12 dedicated to the refrigerator compartment 7 and the vegetable compartment 8 and a second cooler 15 dedicated to the freezer compartment 9 are sequentially connected by pipes, and the three-way valve 22 and a dedicated dedicated freezer compartment 9 are connected. Another capillary tube 24 is provided between the second cooler 15 and the inlet side, and when the cool air is supplied to the freezing chamber 9, the refrigerant discharged from the compressor 20 is cooled. The condenser 21, the three-way valve 22, the capillary tube 24, and the second cooler 15 flow in this order, and when supplying cool air to the refrigerator compartment 7 and the vegetable compartment 8, by switching the three-way valve 22, Same three-way valve 2
2 flows through the capillary tube 23, the first cooler 12, and the second cooler 15 in this order.

However, in the above configuration, the first room for forced circulation of the cold air for the refrigerator room 7 and the vegetable room 8 is provided.
The blower 13 has the cool air supply duct 11 side and a rotating shaft attached in a horizontal direction, and the cool air blown out from the first blower 13 is blown forward or backward. In order to blow up to the eleventh side, it was necessary to change the direction of the wind, and there was a problem that the delivered cold air might be weakened.

[0005] In addition, in order to obtain a required amount of air or a fear that the cooling power in the refrigerator compartment 7 and the vegetable compartment 8 is weak with one first blower 13, the first blower 13 having a large air volume is required.
Has to be used, and there is a problem that it may cause noise.

[0006]

SUMMARY OF THE INVENTION In the present invention, in view of the above problems, the cool air blown out by a plurality of cool air forced circulation blowers dedicated to storage rooms can be efficiently blown upward without resistance and can be sufficiently cooled. An object of the present invention is to provide a refrigerator that ensures a large amount of blowout.

[0007]

According to the present invention, in order to solve the above-mentioned problems, the inside of a heat insulating box formed by filling a foam heat insulating material between an outer box and an inner box is partitioned by two upper and lower heat insulating partitions. A plurality of storage compartments in an upper portion and a freezing compartment in a lower portion, and a first cooler dedicated to the storage compartment in a cool air generation chamber provided behind the storage compartment; And a first blower for forced circulation of cool air is disposed above the first cooler, and the cool air generated by the first cooler is supplied to the upper storage room via a cool air supply duct, and the cool air To the central storage room, and configured to return to the cold air generation chamber from a cool air return duct at the lower rear part of the central storage room, and to another cold air generation chamber provided behind the freezing room. A second cooler dedicated to the freezing room and a second blower for forced air circulation are disposed, In the refrigerator, the cool air generated by the second cooler is supplied to the freezing chamber by a second blower, and is returned to the cooler via a cool air recirculation path provided at a lower rear portion of the freezing chamber. The rotation axis of the first blower is installed in parallel with the cold air supply duct side.

The first blower is configured such that a concave portion is provided in the heat insulating partition forming the cold air supply duct, and the first blower is disposed in the concave portion.

[0009] The inside of a heat insulating box body filled with a foamed heat insulating material between the outer box and the inner box is partitioned by two upper and lower heat insulating partitions,
A plurality of storage chambers are formed in an upper part, and a freezing room is formed in a lower part. A first cooler dedicated to the storage room is provided in a cool air generating chamber provided behind the storage room, and a first cooler is provided above the first cooler. And a first blower for forced circulation of cold air is disposed in the storage chamber, and the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central portion. And the cold air return duct at the rear lower part of the central storage room is returned to the cold air generation chamber, and another cold air generation chamber provided behind the freezing chamber is provided with the freezing chamber. A dedicated second cooler and a second blower for forced air circulation are provided, and the cool air generated by the second cooler is supplied to the freezing room by the second blower. To the cooler via a cool air recirculation passage provided at the lower rear of the The rotation axis of the blower parallel to installation and the cool air supply duct side, the rotational speed of the first fan,
The number of revolutions is reduced to a predetermined value.

[0010] The inside of a heat insulating box formed by filling a foam heat insulating material between the outer box and the inner box is partitioned by two upper and lower heat insulating partitions.
A plurality of storage chambers are formed in an upper part, and a freezing room is formed in a lower part. A first cooler dedicated to the storage room is provided in a cool air generating chamber provided behind the storage room, and a first cooler is provided above the first cooler. And a first blower for forced circulation of cold air is disposed in the storage chamber, and the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central portion. And the cold air return duct at the rear lower part of the central storage room is returned to the cold air generation chamber, and another cold air generation chamber provided behind the freezing chamber is provided with the freezing chamber. A dedicated second cooler and a second blower for forced air circulation are provided, and the cool air generated by the second cooler is supplied to the freezing room by the second blower. Refrigeration that returns to the cooler via a cool air return path provided in the lower rear part of the In, the rear lower portion of the cold air return duct of the central storage compartment has a configuration in which the outlet side is disposed a third blower downwardly of the cold air generation chamber.

[0011] The first blower has a configuration in which the air volume is smaller than that of the second blower.

[0012] The inside of a heat insulating box body filled with a foamed heat insulating material between the outer box and the inner box is partitioned by two upper and lower heat insulating partitions.
A plurality of storage chambers are formed in an upper part, and a freezing room is formed in a lower part. A first cooler dedicated to the storage room is provided in a cool air generating chamber provided behind the storage room, and a first cooler is provided above the first cooler. And a first blower for forced circulation of cold air is disposed in the storage chamber, and the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central portion. And the cold air return duct at the rear lower part of the central storage room is returned to the cold air generation chamber, and another cold air generation chamber provided behind the freezing chamber is provided with the freezing chamber. A dedicated second cooler and a second blower for forced air circulation are provided, and the cool air generated by the second cooler is supplied to the freezing room by the second blower. Return to the cooler through a cool air return path provided at the rear lower part of the The lower rear of the cool air return duct of the chamber, the third air blower disposed, the first fan and the third
Are rotated in the same direction during the rapid cooling operation.

[0013] Only the first blower is rotated during the stable cooling operation.

When the first blower and the third blower are used as the refrigerating room in the central storage room, the first blower and the third blower are alternately rotated in the same direction.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below as examples with reference to the accompanying drawings. The same reference numerals are used for the same parts as in the conventional example. FIG. 1 is a side sectional view (A) of a heat insulating box body and a main part enlarged side sectional view (B) showing a first embodiment of the present invention, and FIG. 2 is a piping connection diagram of a refrigeration cycle according to the present invention. FIG. 3 is a side sectional view (A) of a heat insulating box body and a main part enlarged side sectional view (B) showing a second embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes an insulating box (also referred to as a refrigerator body) including an outer box 2 made of a steel plate, an inner box 3 made of a synthetic resin, a foamed heat insulating material 4, and the like. Is divided by two upper and lower heat insulating partitions 5 and 6, a refrigerator compartment 7 is formed at an upper portion, a vegetable compartment 8 is formed at a center, and a freezing compartment 9 is formed at a lower portion.
Behind the vegetable room 8 in the center (middle), a cold air generation room 10
A first cooler 12 dedicated to the refrigerator compartment 7 and the vegetable compartment 8, and a first blower 13 for forced air circulation above the first cooler 12, The cool air generated by the first cooler 12 is supplied to the upper refrigerator room 7 through the cool air supply duct 11, and the cool air in the refrigerator room 7 is supplied to the vegetable room 8 at the center. 8 is configured to return to the cool air generation chamber 10 from a cool air return duct 14 at a lower rear portion.

Further, another cold air generating chamber 17 provided behind the freezing chamber 9 has a second dedicated cooling chamber 9.
A cooler 15 and a second blower 16 for forced air circulation are provided, and the cool air generated by the second cooler 15 is supplied to the freezing compartment 9 by the second blower 16. It is configured to return to the cooler 15 via a cool air recirculation passage 18 provided at the lower rear part of the freezing compartment 9.

The refrigerating cycle of the refrigerator described above is, as shown in FIG. 2, a compressor 20, a condenser 21, a three-way valve 22 for switching the traveling direction of the refrigerant, a capillary tube 23, the refrigerating room 7 and the vegetable room 8 A dedicated first cooler 12 and a second cooler 15 dedicated to the freezing compartment 9 are sequentially connected by piping, and the three-way valve 22 and the freezing compartment 9 are connected.
Another capillary tube 24 is provided between the inlet of the dedicated second cooler 15, and when the cool air is supplied to the freezing compartment 9, it is discharged from the compressor 20. The refrigerant is the condenser 21, the three-way valve 22,
The refrigerant flows through the capillary tube 24 and the second cooler 15 in this order, and when supplying cool air to the refrigerator compartment 7 and the vegetable compartment 8, the refrigerant passing through the three-way valve 22 is switched by switching the three-way valve 22. The capillary tube 23,
The first cooler 12 and the second cooler 15 flow in this order.

As shown in FIG. 1 (B), the first air blower 13 for forced air circulation for the cold room 7 and the vegetable room 8 is connected to the first air blower 13 by a rotation axis of the cold air supply duct. Since the flow of the cool air sent from the first blower 13 is blown upward from below into the cool air supply duct 11, the force of the sent cool air is weakened. It is possible to eliminate the problem that there is a danger of such a situation.

Further, since the flow of cool air sent from the first blower 13 flows upward from below, the shape of the bell mouth and the shape of the blower can be simplified, so that the cost can be reduced. .

Further, the first blower 13 is provided in the heat insulating partition 5 forming the cold air supply duct 11 by a recess 5a.
The first blower 13 can be attached to the heat-insulating partitioning body 5 in advance by moving the lead wire from the inside of the housing to the near side, and the assembling work can be performed. Can be simplified.

Further, during a stable operation in which the temperature in the refrigerator compartment 7 and the vegetable compartment 8 does not rise so much, it is possible to perform an operation in which the rotation speed of the first blower 13 is reduced to a predetermined rotation speed. The first blower 1
The driving noise of No. 3 can be reduced, noise can be reduced, and energy can be saved.

FIG. 3 shows a second embodiment of the present invention.
In addition, the third cooler 1 with the blower side directed downward of the cold air generation chamber 10 is provided.
The first blower 13 is disposed above the second blower 2, and the third blower 19 is disposed below the second blower. The two blowers are used to improve the cooling power into the refrigerator compartment 7 and the vegetable compartment 8. Therefore, in order to obtain a required air volume with one first blower 13, there is no need to use the first air blower 13 having a large air volume, and it is possible to eliminate a problem that may cause noise. .

By disposing the third blower 19, the first blower 13 can be made smaller with a smaller air volume than the second blower 16, so that the space can be reduced and the operating noise can be reduced. Can be reduced, and energy can be saved.

Further, the first blower 13 and the third blower 19 are turned on during the rapid cooling operation or when the temperature in the refrigerator compartment 7 and the vegetable compartment 8 rises quickly. By rotating in the same direction, circulation of cool air can be promoted. During a stable cooling operation in which the temperature in the refrigerator compartment 7 and the vegetable compartment 8 does not rise so much, the silent operation is performed by rotating only the first blower 13 above the first cooler 12. Do.

When the vegetable compartment 8 is used as the refrigerator compartment 7, the first blower 13 and the third blower 19 are used.
Are rotated alternately in the same direction, ie, forward rotation and reverse rotation, so that the cool air is normally blown out from the cool air return duct 14 to cool the vegetable compartment 8 so that there is no insufficient cooling. Further, by performing such control, the switching chamber, which conventionally used the damper, can be implemented without the damper.

In the above embodiment, the first cooler is arranged behind the vegetable compartment 8; however, the first cooler may be arranged behind the refrigerator compartment 7. (Not shown)

[0028]

As described above, according to the present invention, the cool air blown out from the cool air forced circulation blower dedicated to a plurality of storage rooms can be efficiently blown upward without resistance, and a sufficient blow-out amount can be secured. Refrigerator.

[Brief description of the drawings]

FIG. 1A is a side sectional view of a heat insulating box body showing a first embodiment of the present invention, and FIG.

FIG. 2 is a piping connection diagram of a refrigeration cycle according to the present invention and a conventional example.

FIG. 3 is a side sectional view (A) of a heat insulating box body showing a second embodiment of the present invention, and an enlarged side sectional view (B) of a main part.

FIG. 4 is a side sectional view of a heat insulating box showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulated box 2 Outer box 3 Inner box 4 Foamed heat insulating material 5 Insulated partition 5a recess 6 Insulated partition 7 Refrigerator room 8 Vegetable room 9 Freezer room 10 Cold air generation room 11 Cold air supply duct 12 First cooler 13 First 14 Cooler return duct 15 Second cooler 16 Second blower 17 Cold air generation chamber 18 Cold air recirculation path 19 Third blower 20 Compressor 21 Capacitor 22 Three-way valve 23 Capillary tube 24 Capillary tube

Claims (8)

[Claims] 1. An interior of an insulating box body filled with a foamed insulating material between an outer box and an inner box is partitioned by two upper and lower heat insulating partitions, and a plurality of storage rooms are formed in an upper part and a freezing room is formed in a lower part. And a first cooler dedicated to the storage room and a first blower for forced air circulation above the first cooler in the cool air generation room provided behind the storage room. Then, the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central storage room. A second cooler dedicated to the freezing room and a second cooler for forced air circulation are provided in another cool air generating room provided behind the freezing room, while being configured to return to the cold air generating room from the lower cool air return duct. And a second blower, and cool air generated by the second cooler is forwarded by the second blower. A refrigerator configured to supply to the freezer compartment and return to the cooler through a cool air recirculation passage provided at a lower rear portion of the freezer compartment, wherein a rotating shaft of the first blower is connected to the cold air supply duct side. Refrigerator characterized by being installed in parallel with. 2. The refrigerator according to claim 1, wherein the first blower is provided with a recess in the heat insulating partition forming the cold air supply duct, and is disposed in the recess. 3. A heat insulating box body filled with foamed heat insulating material between an outer box and an inner box is partitioned by two upper and lower heat insulating partitions, and a plurality of storage rooms are formed in an upper part and a freezing room is formed in a lower part. And a first cooler dedicated to the storage room and a first blower for forced air circulation above the first cooler in the cool air generation room provided behind the storage room. Then, the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central storage room. A second cooler dedicated to the freezing room and a second cooler for forced air circulation are provided in another cool air generating room provided behind the freezing room, while being configured to return to the cold air generating room from the lower cool air return duct. And a second blower, and cool air generated by the second cooler is forwarded by the second blower. The cooling air is supplied to the freezing compartment, and returned to the cooler through a cool air recirculation passage provided at a lower rear portion of the freezing compartment. The rotation axis of the first blower is set in parallel with the cold air supply duct side. A method of controlling the refrigerator, wherein the rotation speed of the first blower is reduced to a predetermined rotation speed. 4. The inside of an insulating box body filled with foamed insulating material between an outer box and an inner box is partitioned by two upper and lower heat insulating partitions, and a plurality of storage rooms are formed in an upper part and a freezing room is formed in a lower part. And a first cooler dedicated to the storage room and a first blower for forced air circulation above the first cooler in the cool air generation room provided behind the storage room. Then, the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central storage room. A second cooler dedicated to the freezing room and a second cooler for forced air circulation are provided in another cool air generating room provided behind the freezing room, while being configured to return to the cold air generating room from the lower cool air return duct. And a second blower, and cool air generated by the second cooler is forwarded by the second blower. In the refrigerator, which is supplied to the freezer compartment and returned to the cooler through a cool air recirculation passage provided at the lower rear portion of the freezer compartment, the air is blown out to a cool air return duct at the lower rear portion of the central storage compartment. A refrigerator provided with a third blower whose side is directed downward of the cold air generation chamber. 5. The refrigerator according to claim 4, wherein the first blower has a smaller air volume than the second blower. 6. An insulating box body filled with a foamed insulating material between an outer box and an inner box is partitioned by two upper and lower heat insulating partitions, and a plurality of storage rooms are formed at an upper part and a freezing room is formed at a lower part. And a first cooler dedicated to the storage room and a first blower for forced air circulation above the first cooler in the cool air generation room provided behind the storage room. Then, the cool air generated by the first cooler is supplied to the upper storage room through a cool air supply duct, and the cool air in the storage room is supplied to the central storage room. A second cooler dedicated to the freezing room and a second cooler for forced air circulation are provided in another cool air generating room provided behind the freezing room, while being configured to return to the cold air generating room from the lower cool air return duct. And a second blower, and cool air generated by the second cooler is forwarded by the second blower. The cooler is supplied to the freezer compartment, and returned to the cooler through a cool air recirculation passage provided at a lower rear portion of the freezer compartment. A third blower is provided to a cool air return duct at the lower rear portion of the central storage compartment. A method of controlling a refrigerator, comprising: disposing the first and third blowers in the same direction during a rapid cooling operation. 7. The system according to claim 6, wherein only the first blower is rotated during the stable cooling operation.
A method for controlling a refrigerator as described in the above. 8. The method according to claim 1, wherein the first and third blowers are rotated alternately in the same direction when the central storage room is used as a refrigerator. The method for controlling a refrigerator according to claim 6.