JPH0445012Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a refrigerator that includes a freezer compartment, a refrigerator compartment, and a third compartment that independently circulates cold air within the refrigerator compartment.

BACKGROUND OF THE INVENTION In recent years, refrigerators have been required to have a function that allows fresh foods such as fish and meat to be stored for a relatively long period of time without losing their freshness by maintaining their respective optimal storage temperature ranges. In particular, the optimal storage temperature for fish
There is a growing need for a low-temperature container that has a temperature control function from -3 to 0°C, which allows selection of a temperature around 3°C, which is the optimum storage temperature for meat, around 0°C.

A conventional example will be explained with reference to FIG. Reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3, and a foamed heat insulating material 4 filled between these two boxes, and is divided into a freezing compartment 6 at the top and a refrigerating compartment 7 at the bottom by a partition wall 5. . Further, within the partition wall 5, a cooler 8 for a refrigeration cycle and a blower 9 for forced ventilation are arranged. Reference numeral 10 denotes a low-temperature container installed at the top of the refrigerator compartment, and 11 denotes a temperature control device facing the back of the low-temperature container 10. Inside, there is a damper opening/closing device 12 for controlling the amount of cold air to the refrigerator compartment 7, and a damper opening/closing device 12 for controlling the amount of cold air to the refrigerator compartment 7. cold air discharge passage 13,
Discharge port 14 and cold air discharge passage 1 to low temperature container 10
5. The discharge port 16 is integrally provided. 17,19
are a freezer compartment ventilation duct and a refrigerator compartment ventilation duct, respectively, one end of which is opened to the discharge side of the blower 9, and the other end communicated with the freezing compartment 6 and the refrigerator compartment 7, respectively. 1
The freezer compartment suction passages 20 formed in the partition wall 5 are refrigerator compartment suction passages 8 formed by penetrating the heat insulating material 23 of the partition wall 5, and are open facing the coolers 8, respectively. 21 and 22 are a freezer compartment suction port and a refrigerator compartment suction port, respectively.

The operation of the refrigerator configured as described above will be explained below. First, the air cooled by the cooler 8 is transferred to the freezer compartment ventilation duct 1 by the blower 9.
After cooling the freezer compartment 6 that is blown into the freezer compartment 6 through the
is returned to the cooler 8 via. At the same time, on the one hand, the temperature reaches the temperature control device 11 through the refrigerator compartment ventilation duct 19, is controlled to an appropriate level by the damper opening/closing device 12, and is then discharged to the refrigerator compartment 7 via the discharge passage 13 and the discharge port 14. Passage 15, discharge port 16
It is distributed and supplied to the low-temperature vessels 10 via the cooling chambers 10 and cooled respectively. Thereafter, the air that has been circulated and cooled in the refrigerator compartment 7 and the air that has been cooled in the low-temperature container 10 are simultaneously sucked in through the refrigerator compartment suction port 22 and returned to the cooler 8 through the refrigerator compartment suction passage 20, and the same action continues thereafter. Normal cooling is performed.

Problems to be Solved by the Invention However, in the above configuration, the temperatures of the refrigerator compartment 7 and the low-temperature container 10 are controlled simultaneously by one damper opening/closing device provided in the temperature control device 11. Only correlated temperature control can be performed. For example, a cold container 10 for fish storage
If an attempt is made to set the temperature to around -3°C, the temperature of the entire refrigerator compartment 7 will drop, and there is a risk that the interior of the refrigerator compartment will freeze. In addition, a low-temperature container 10 is installed for storing meat.
Even if the temperature is set around ℃, if the damper opening/closing device 12 opens wide and sends in a large amount of cold air due to frequent use of the refrigerator compartment 7 during that time, unnecessary cold air may also flow into the low temperature container 10. There was also a fear that the meat would become overcooled and freeze.

In addition, in terms of structure, the low temperature container 10 is generally made of synthetic resin and is not insulated around it, and is provided with a certain gap from surrounding structures, so it is not in communication with the refrigerator compartment 7. Setting a low-temperature zone below 0°C is inefficient and may cause condensation on the bottom of the low-temperature container 10 due to the large temperature difference with the refrigerator compartment 7, or the refrigerator compartment suction port 22 being sucked in at the same time. A similar problem is likely to occur near the opening. Since the refrigerator compartment suction port 22 is located close to the edge of the door opening, if the door is opened and closed frequently under high temperature and high humidity conditions, the problem will become even more serious, leading to not only condensation but also freezing. Consequently, the refrigerator compartment suction port 22
There was also concern that this would block the airflow and impede air circulation, leading to cooling malfunctions.

In view of the above points, the present invention provides a low temperature chamber that can independently maintain a stable low temperature zone and eliminate quality problems such as dew condensation and freezing.

Means for Solving the Problems As a means of the present invention to achieve the above object, there is provided a first damper opening/closing device that adjusts the amount of cold air discharged to the refrigerator compartment, and a third chamber used as a cold room. It is equipped with a temperature control device in which a second damper opening/closing device for adjusting the amount of cold air is housed and a cold air discharge passage is formed in one body, and a cold air intake port and a cold air intake port for the refrigerator compartment and the third compartment are provided in the partition wall that separates the freezer compartment and the refrigerator compartment. A third case frame is provided with an air passage leading to the cooler, and has a plurality of cold air suction holes whose opening area becomes smaller as it approaches the third chamber suction port, and forms a suction duct communicating with the cold room suction port. It was installed around the front of the room.

Effects The present invention, with the above-described configuration, makes it possible to independently and stably control the temperature of the cold room, eliminates quality problems such as dew condensation and freezing due to communication with the refrigerator compartment, and the adjacency, and also solves the problem of quality problems such as dew condensation and freezing in the cold room as a whole. It is possible to reduce temperature unevenness.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In addition, the same reference numerals are given to the same configuration as the conventional one, and detailed explanation thereof will be omitted.

In the figure, 10a is a third chamber (hereinafter referred to as the cold room 10a) provided at the top of the refrigerator compartment 7, with a heat insulating plate 10b at the bottom, a case frame 10d around the front, and a heat insulating door facing the case frame 10d at the front. 10c, and the top, side, and back surfaces are the insulation structures of the partition wall 5, inner box 3, and temperature control device 11a, respectively, to form the refrigerator compartment 7.
It is divided into semi-enclosed sections. Temperature control device 1
1a has a first damper opening/closing device 1 for the refrigerator compartment inside.
2a, a second damper opening/closing device 12b of the cold room, a cold air discharge passage 13a to the refrigerator compartment 7, a discharge port 14a, a cold air discharge passage 15a to the cold room 10a, and a discharge port 16a are integrally provided. Reference numeral 19a denotes a ventilation duct, one end of which is provided on the discharge side of the blower 9, and the other end of which is branched into two directions through a branch port 24, with one opening facing the second damper opening/closing device 12b for the refrigerator compartment. 25 is a cold room suction passage formed in the heat insulating material 23 of the partition wall 5, and 26 is a cold room suction port.

The upper part of the case frame 10d has a plurality of cold air suction holes 27 and a communication port 29, and the communication port 29 forms a suction duct 28 communicating with the cold room suction port 26. Note that the opening area of the cold air suction hole 27 becomes smaller as it approaches the cold room suction port 26.

In this configuration, the air cooled by the cooler 8 is passed through the ventilation duct 19a by the blower 9 to the first damper opening/closing device 12a for the refrigerator compartment.
reaches the cold air discharge passage 13 and is controlled to an appropriate amount.
a. It is supplied to the refrigerator compartment 7 through the discharge port 14a and is cooled. On the other hand, the second damper opening/closing device 12 for the cold room is connected via the branch port 24 of the ventilation duct 19a.
b, and the amount of cold air is controlled to an appropriate amount so that the desired low temperature range is reached, and the cold air discharge passage 15a and the discharge port 1 are
6a into the cold room 10a,
A is independently and stably controlled at a low temperature of -3 to 0°C. At this time, the cold room 10a is a semi-closed room surrounded by a heat insulating board 10b, a heat insulating door 10c on the front side, and a heat insulating structure on the other side, so there is almost no communication with the refrigerator compartment 7, and the temperature of the refrigerator compartment is relatively high. Cooling efficiency is good with little influence of Moreover, at the same time, problems such as condensation on the bottom of the cold room and the surrounding area do not occur.

Thereafter, the air that has been circulated and cooled in the refrigerator compartment 7 is passed through the refrigerator compartment suction port 22 and the refrigerator compartment suction passage 20 to the cooler 8.
will be returned to. On the other hand, the air that has cooled the inside of the cold room 10a flows into the suction duct 28 from the cold air suction hole 27 at the top of the case frame 10d, and is returned to the cooler 8 through the communication port 29, the cold room suction port 26, and the cold room suction passage 25. Therefore, the low-temperature intake air of the cold room 10a does not pass through the refrigerator compartment suction port 22, and the influence of dew condensation and freezing caused by joining with the refrigerator compartment air near the refrigerator compartment suction port 22 and the opening and closing of the door can be eliminated. Also, cold room 10a
The cold air is sucked in through a plurality of cold air suction holes 27, and the closer the cold air suction port 27 is to the cold room suction port 26, the smaller the opening area and the higher the temperature. By actively introducing air from a place near the heat insulating door 10c and far from the cold room suction port 26, the cold air convection in the cold room 10a is less uneven, and the temperature is also less uneven.

Effects of the invention As is clear from the above explanation, the present invention has a freezer compartment, a refrigerator compartment, and a third chamber provided in the refrigerator compartment, which are divided by partition walls, and a connection between the refrigerator compartment and the third compartment. The third damper is equipped with two damper opening/closing devices for adjusting the amount of cold air discharged, and a temperature regulating device housing the damper opening/closing devices and integrally forming a cold air discharge passage to the refrigerator compartment and a third compartment. The chamber has a bottom surface formed by a heat insulating board, a case frame surrounding the front surface, and a heat insulating door facing the case frame at the front surface, and a top surface formed by the partition wall,
The side wall of the refrigerator compartment is partitioned into a semi-hermetic state by the temperature control device at the rear, and the cold air intake hole of the third chamber is provided in the partition wall independently of the cold air intake port of the refrigerator compartment. , the upper part of the case frame is in communication with the third indoor cold air suction port, and has a plurality of cold air suction ports whose opening area becomes smaller as it approaches the third indoor cool air suction port. Since it is formed, the following effects can be obtained.

(1) Especially in recent years, the third chamber has been designed to function as a cold room where fish and meat are maintained at a low temperature range (-3 to 0°C) that matches the optimal storage temperature.
By providing a damper opening/closing device exclusively for the third compartment, stable temperature control with little temperature variation can be performed independently of the refrigerating compartment.

(2) The problem of condensation and icing quality near the refrigerator compartment suction port, which is susceptible to the effects of opening and closing of the door because the air sucked into the third room does not pass through the refrigerator compartment suction port, can be solved.

The implementation effects are extremely high.

[Brief explanation of the drawing]

Figure 1 shows the third embodiment of a refrigerator showing an embodiment of the present invention.
Figure 2 is a cross-sectional view of the refrigerator with the third chamber, Figure 3 is a cross-sectional view of the main parts of the refrigerator in Figure 2, and Figure 4 is the case frame in Figure 2. FIG. 5 is a perspective view showing a heat insulating plate, and FIG. 5 is a sectional view of a conventional refrigerator. 5...Division wall, 6...Freezing room, 7...Refrigerating room,
10a...Third chamber (cold room), 10b...Insulation board, 10c...Insulation door, 10d...Case frame, 1
1a...Temperature adjustment device, 12a...Damper opening/closing device for the refrigerator compartment, 12b...Damper opening/closing device for the third compartment, 22...Cold air suction port for the refrigerator compartment, 26
... Cold air suction port of the third chamber, 27 ... Cold air suction hole, 28 ... Suction duct.

Claims (1)

[Scope of utility model registration request] A freezer compartment, a refrigerator compartment, and a partition wall that separates these compartments,
a cooler in the partition wall; a third chamber in the refrigerator compartment whose temperature can be adjusted independently of the refrigerator compartment; a first damper opening/closing device that adjusts the amount of cold air discharged to the refrigerator compartment; a second damper opening/closing device that adjusts the amount of cold air discharged into the room; and a temperature regulating device that houses the first and second damper opening/closing devices and integrally forms a cold air discharge passageway to the refrigerator compartment and the third chamber. The third chamber has a bottom surface formed by a heat insulating plate, a front periphery formed by a case frame, a front surface formed by a heat insulating door facing the case frame, and a top surface formed by the partition wall, a side surface formed by the refrigerator compartment side wall, and a rear surface formed by a heat insulating plate. is semi-hermetically divided by the temperature control device, and an air passage leading to the cold air inlet of the refrigerator compartment and the third compartment and the cooler is provided in the partition wall, and the A refrigerator comprising a cold air suction duct that communicates with a third room cool air suction port and has a plurality of cold air suction holes whose opening area becomes smaller as it approaches the third room cool air suction port.