JPH0620063Y2 - refrigerator - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cold air forced circulation type refrigerator having a freezing compartment, a refrigerating compartment, and a third compartment.

Conventional Technology A conventional example will be described with reference to FIG. 1 is the refrigerator body, 2
Is a refrigerating compartment, 3 is a refrigerating compartment, and the freezing compartment 2 and the refrigerating compartment 3 are vertically partitioned by a partition wall 5. Further, the partition wall 5 forms a ceiling surface 6 of a third chamber 4 arranged above the refrigerating chamber 3, and a main duct 7 for introducing cold air into the third chamber 4 and a refrigerating chamber 6 inside the partition wall 5. A return duct 8 for inhaling the return cool air of the chamber 3 and the third chamber 4 is buried. Reference numeral 9 denotes a refrigerating compartment 3, which is a temperature adjusting device provided in the inner part of the third compartment 4, and is composed of a front heat insulating case 9a, a rear heat insulating case 9b, and a cover 9c. A damper opening / closing device (not shown) for adjusting the cold air discharge amount and a damper opening / closing device 10 for adjusting the cold air discharge amount to the third chamber 4 are housed. Further, 10a is a temperature-sensitive cylinder that detects the temperature inside the third chamber 4 and controls the opening degree of the damper opening / closing device 10, and is installed on the inner surface of the third chamber 4. Reference numeral 11 denotes a dial that adjusts the opening characteristic of the damper opening / closing device 10 to change the set temperature of the third chamber 4, and is provided at the back of the refrigerating chamber 3 and below the third chamber 4. Reference numeral 12 denotes a cool air discharge passage provided in the temperature control device 9, which is the main duct 7 of the partition wall 5.
Connected with. Further, 13 is a door of the third chamber 4, which together with the bottom plate 14 defines the third chamber 4. 15
Is a cooler provided on the inner surface of the freezer compartment 2, and a blower (not shown) is arranged above it. Reference numeral 16 is a blower duct for guiding the cool air discharged from the blower to the temperature control device 9.

In this configuration, the air cooled by the cooler 15 is
A blower (not shown) forcibly circulates in the freezer compartment 2 and reaches the temperature control device 9 via the blower duct 16, respectively for a refrigerator compartment damper opening / closing device (not shown) and a third chamber damper opening / closing. The discharge amount is controlled by the device 10 so that each chamber has a predetermined temperature.
To the refrigerating chamber discharge passage (not shown), and to the third chamber 4 are returned from the cool air discharge air passage 12 to the cooler 15 via the main duct 7 and the suction duct 8, and thereafter the same operation is performed. Cooling continues.

It should be noted that the third chamber 4 has a chilled temperature (about 0 ° C.) and an ice temperature (about -1 ° C.) lower than the normal refrigerating chamber temperature (3 to 5 ° C.) and higher than the freezing chamber in recent years. , It is required to switch to a temperature suitable for fresh preservation of each food such as partial freezing (about -3 ° C). For this reason, in order to change the opening characteristic of the damper opening / closing device 10, the dial 11
Is provided.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a configuration, when the set temperature of the third chamber 4 is switched, the dial 11 of the temperature control device 9 arranged at the bottom of the bottom plate 14 of the third chamber 4 is used. If you have to operate a lot of food in the refrigerator 3,
Since the operation is difficult and the dial 11 is at the back, it has a drawback that it is difficult to make accurate adjustment.
In order to solve this problem, in order to operate the dial 11 of the damper opening / closing device of the third chamber 4 in the front of the refrigerator, a conversion mechanism is usually provided between the lever in the front of the refrigerator and the dial 11. However, the structure is complicated, the cost is increased, and the adjustment accuracy is lowered due to the mechanical tolerances.

In view of the problems of the above-mentioned conventional example, the present invention is capable of accurately adjusting the temperature without lowering the complexity of the mechanism while providing the third chamber temperature switching lever at the front part of the interior of the refrigerator, and at a low cost. An object is to provide a refrigerator provided with a temperature switching device.

Means for Solving the Problems In order to solve the above problems, a refrigerator according to the present invention comprises a freezing room partitioned by partition walls, a refrigerating room, and a ceiling surface using at least a part of the partition walls. And a third chamber for
Damper opening / closing device for adjusting the discharge amount of cold air to the chamber, a blower duct for sending cold air to the third chamber through the damper opening / closing device, and a cold air returning device provided with an opening in the front surface of the third chamber. A duct, a temperature sensitive tube of the damper opening / closing device arranged at the opening of the cold air return duct, and a shutter for adjusting the amount of cold air introduced into the temperature sensitive tube are provided.

Effect The present invention has the above-described configuration, whereby the amount of cold air to the temperature sensitive cylinder of the damper opening / closing device can be easily changed by opening / closing the shutter, and the set temperature can be switched. Further, the shutter can be easily installed in front of the third chamber, and the lever integrated with the shutter can be easily operated from the front of the inside of the refrigerator.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. It should be noted that the same components as those of the related art are denoted by the same reference numerals, detailed description thereof will be omitted, and only different portions will be described.

In the figure, the third chamber 4 is shown on the back side in the cold air discharge passage 1
It communicates with 2. Reference numeral 18 is a return duct provided in the partition wall 5 that guides the cool air in the third chamber 4 to the leeward side of the cooler 15, and the opening 19 serving as an intake port is located near the door 14 of the third chamber 4. It is located on the top surface of the wall 5. The opening 19 is continuous with a pair of ventilation holes 21a and 21b formed of a plurality of holes 20 elongated in the width direction. And the ventilation port 2
A partition wall 5a is provided between 1a and 21b so as to partially project from the partition wall 5 to prevent backflow.

The temperature-sensitive cylinder 10a is arranged so as to face the ventilation port 21a on the side away from the opening 19.

A shutter 22 is provided with a hole 24 so as to move to the pair of ventilation holes 21a and the other ventilation hole 21b and communicate with the hole 20 of the ventilation hole 21a.

That is, the shutter 22 serves as the ventilation port 21a having the temperature sensitive tube 10a and alternately opens and closes the ventilation port 21b.

Further, the shutter 22 is provided with an operation lever 23.

In such a configuration, when the operation lever 23 is moved in the direction a in the figure, the shutter 22 is moved in the direction a, and the temperature sensitive tube 10 is moved.
The hole 20a facing a is open. Therefore, the temperature of the temperature sensitive tube 10a decreases, the opening degree of the damper opening / closing device 10 decreases, and the set temperature of the third chamber 4 increases. On the contrary, when the operation lever 23 is moved in the direction b in the figure, the hole 20a facing the temperature sensitive cylinder 10a is closed by the shutter 22. Therefore, the temperature of the temperature sensitive cylinder 10a rises,
The opening degree of the damper opening / closing device increases, and the set temperature of the third chamber 4 decreases.

As described above, according to this embodiment, the set temperature of the third chamber 4 can be easily switched by operating the shutter 22 in front of the third chamber. Therefore, in the present embodiment, the setting temperature is switched in the front part of the inside of the refrigerator, so that the temperature can be easily switched even if a large amount of food is stored in the inside of the refrigerator. Also, the mechanism is simple, only with the shutter, and the cost is low.

As described above, the present invention does not set the temperature characteristics of the damper opening / closing device itself by adjusting the internal mechanism by providing the shutter mechanism for adjusting the amount of cold air introduced into the temperature sensitive cylinder of the damper opening / closing device. The damper opening / closing device does not require an extra switching mechanism, and thus a low-cost damper opening / closing device can be adopted. Further, since the set temperature of the third chamber can be easily switched in front of the third chamber, it is not necessary to remove the food in the refrigerator and adjust the dial as in the conventional case.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the vicinity of a third chamber of a refrigerator showing an embodiment of the present invention, FIG. 2 is a cross-sectional view of a return duct as seen from the front, and FIG. Plan view, FIG. 4 is third
FIG. 5 is a plan view of the return duct portion of the chamber of FIG. 5, and FIG. 5 is a sectional view of the vicinity of the third chamber of the conventional example. 2 ... Freezer room, 3 ... Refrigerator room, 4 ... Third room, 5 ...
Partition wall, 6 ... Ceiling surface, 8 ... Refrigerator return duct, 9
...... Temperature control device, 10 ... Damper opening / closing device, 10a ...
... Temperature sensitive tube, 12 ... Cold air discharge passage, 18 ... Third chamber return duct, 19 ... Opening, 20 ... Hole, 21a, 2
1b ... Ventilation port, 22 ... Shutter.

Claims (1)

[Scope of utility model registration request] 1. A freezing chamber partitioned by a partition wall, a refrigerating chamber, a third chamber that constitutes a ceiling surface by using at least a part of the partition wall, and cold air discharge to the third chamber. A damper opening / closing device for adjusting the amount, a blower duct for sending cool air to the third chamber via the damper opening / closing device, a cool air returning duct having an opening in the front surface of the third chamber, and this cold air returning duct. A refrigerator provided with a temperature-sensitive cylinder of the damper opening / closing device arranged in an opening of a duct and a shutter for adjusting the amount of cold air introduced into the temperature-sensitive cylinder.