JPH0735457A - Refrigerator - Google Patents

Abstract

PURPOSE:To preserve food without lowering its quality in a freezing refrigerator of a forced ventilation type provided with a cooling chamber in one section of a refrigerating chamber and damper devices respectively in the refrigerating chamber and the cooling chamber. CONSTITUTION:A cooling chamber 22 is provided in one section of a refrigerating chamber 21. On the bottom surface of the cooling chamber 22, a heat regenerating material 30 which reaches heat balance at a prescribed temperature and a temperature detecting means 33 which is thermally conductively fixed are arranged. When the temperature detecting means 33 of the cooling chamber 22 detects a temperature higher than the prescribed temperature and a temperature detecting means 32 of the refrigerating chamber 21 detects a temperature lower than the prescribed temperature, a second damper device 29 is closed by a control means. Further, when the temperature detecting means 33 of the cooling chamber 22 detects a temperature lower than the prescribed temperature, or when the temperature detecting means 32 of the refrigerating chamber 21 detects a temperature higher than the prescribed temperature, the closing of the second damper device 29 is released by the control means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forced ventilation type freezer-refrigerator having a cooling chamber in one compartment of a refrigerating chamber and a damper device in each of the refrigerating chamber and the cooling chamber.

[0002]

2. Description of the Related Art An example of a forced ventilation type refrigerator / freezer having a damper device in a refrigerating room is, for example, SAIKAI Sho 58-04.
It is disclosed in Japanese Patent No. 1464, and its configuration will be described below with reference to FIG.

Reference numeral 1 denotes a refrigerator body, which is composed of an outer box 2, an inner box 3, an outer box 2, and a heat insulating material 4 filled between the inner boxes 3. Reference numeral 5 denotes a partition wall that divides the interior of the refrigerator body 1 into upper and lower parts, and is formed by partitioning the freezing compartment 6 at the upper part and the refrigerating compartment 7 at the lower part. Reference numeral 8 denotes a refrigeration cycle compressor housed in the bottom rear portion of the refrigerator body 1. Reference numeral 9 denotes a cooler for the refrigeration cycle housed in the back surface of the freezer compartment 6, and 10 denotes a blower for forcibly ventilating the cool air cooled by the cooler 9 into the freezer compartment 6 and the refrigerating compartment 7. Reference numeral 11 denotes a duct for guiding cold air to the freezer compartment 6 and the refrigerating compartment 7, and 12 denotes a damper device (hereinafter referred to as an electric damper 12) which is provided at an inlet of the refrigerating compartment 7 and adjusts the amount of cold air inflow by an electric input. 13 and 14 are a freezing room 6 and a refrigerating room 7, respectively.
Is a temperature sensor provided in the room.

The operation of the above arrangement will be described below. Normally, the compressor 8 and the blower 10 are turned on / off based on the set value of the temperature sensor 13 provided in the freezer compartment 6.
F, and the cool air cooled by the cooler 9 is blown by the blower 10
And the freezer compartment 6 is blown by a constant temperature (for example, -20
℃) to keep. On the other hand, the cool air is blown by the blower 10 to the refrigerating chamber 7 through the duct 11, and the amount of cold air is adjusted by the electric damper 12.
It is cooled so as to maintain a constant temperature (for example, 4 ° C.).

[0005]

However, in the above configuration, when the door is opened / closed, the cooler 9 is defrosted, and food is stored before cooling, the temperature sensors 13 and 14 are set in the freezer compartment 6 and the refrigerator. The temperature rise in the chamber 7 is detected, the operating time of the compressor 8 and the opening time of the electric damper are extended, and the freezing chamber 6,
When trying to return the refrigerating chamber 7 to a predetermined temperature, when the heat load is large as described above, it cannot catch up even if the compressor 8 and the electric damper 12 are continuously operated or opened, and the temperature of the stored food rises. However, it takes a very long time to return to the original temperature by cooling.

Among these, storing the food before cooling has a great influence on the food around the stored food, but especially in the refrigerating room 7, depending on the storage amount, the effect on the entire room may be small. Depending on the positional relationship with the stored food, the temperature sensor 14 in the refrigerating compartment 7 cannot detect the temperature rise in the refrigerating compartment 7 due to the storage of the food, and the temperature rise of the food around the stored food becomes large, There has been a problem that the change of food ingredients is promoted and the deterioration of food quality is promoted.

In view of the above-mentioned problems, the present invention provides a processing chamber for removing the rough heat of uncooled food stored in the refrigerating chamber, thereby suppressing the heat influence of the stored food in the storing chamber. The purpose is to ensure the temperature condition for suppressing the quality deterioration of existing foods.

[0008]

In order to solve the above-mentioned problems, a refrigerator according to the present invention comprises a refrigerating compartment, temperature detecting means for detecting the temperature of the refrigerating compartment, and cooling provided in one part of the refrigerating compartment. Chamber, a cold storage material having a composition that reaches thermal equilibrium at a predetermined temperature installed on the bottom surface of the cooling chamber, temperature detecting means fixed to the bottom surface of the cooling chamber in a heat conductive manner, and provided at the inlet of the refrigeration room A first damper device for adjusting the inflow amount of cold air and a second damper device for adjusting the inflow amount of cold air provided at the inlet of the cooling chamber, and the temperature detecting means on the bottom surface of the cooling chamber has a temperature equal to or higher than a predetermined temperature. When the temperature detecting means of the refrigerating chamber detects a temperature equal to or lower than the predetermined temperature, the second damper device provided in the duct is closed, and the temperature detecting means on the bottom surface of the cooling chamber detects the temperature equal to or lower than the predetermined temperature, or the refrigerating chamber. Temperature detection means is above a certain temperature When detecting is for adding a control means for releasing the closure of the second damper device.

[0009]

According to the present invention, since the cold storage material installed on the bottom surface of the cooling chamber has a composition in thermal equilibrium at a predetermined temperature, the cooling treatment of the stored food is performed mainly by the latent heat change of the cold storage material. Therefore, the thermal effect on the refrigerating room is suppressed. Further, when the temperature of the cooling chamber rises due to the storage of food or the like before cooling, and the temperature detecting means on the bottom surface of the cooling chamber is higher than or equal to a predetermined temperature and the temperature detecting means in the refrigerating chamber is lower than or equal to the predetermined temperature, the cooling chamber first By closing the 2 damper device, the amount of air blown into the cooling chamber is increased, the cooling capacity of the stored food is increased, and the time until the stored food is cooled to a predetermined temperature is shortened. Then, when the temperature detecting means on the bottom surface of the cooling chamber drops below a predetermined temperature or the temperature detecting means in the refrigerating room rises above a predetermined temperature, the blockage of the second damper device is released.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

Reference numeral 15 is a refrigerator main body, which is composed of an outer box 16, an inner box 17, and an insulating material 18 filled between the outer box 16 and the inner box 17. Reference numeral 19 denotes a partition wall that partitions the inside of the refrigerator main body 15 into upper and lower parts, and is formed by partitioning the freezing chamber 20 in the upper part and the refrigerating chamber 21 in the lower part. Reference numeral 22 is a cooling chamber provided in one portion of the refrigerating chamber 21. Reference numeral 23 is a refrigeration cycle compressor housed in the bottom rear part of the refrigerator body 15. Reference numeral 24 is a cooler of the refrigeration cycle housed in the lower rear surface of the refrigerator main body 15, and 25 is cold air cooled by the cooler 24.
0 is a blower for forcedly ventilating the refrigerating room 21 and the cooling room 22.

Numerals 26 and 27 are ducts for guiding cold air to the freezing compartment 20, the refrigerating compartment 21 and the cooling compartment 22, respectively. Two
Reference numeral 8 is a first damper device (hereinafter referred to as a first electric damper 28) which is provided at the inlet of the refrigerating chamber 21 to adjust the amount of cold air inflow by electrical input, and 29 is provided at the inlet of the cooling chamber 22 and is electrically input. A second damper device (hereinafter referred to as the second damper device) for adjusting the cold air inflow amount.
It is an electric damper 29).

Reference numeral 30 denotes a cold storage substance which is installed on the bottom surface of the cooling chamber 22 and has a composition that reaches thermal equilibrium at a predetermined temperature (for example, 3 ° C.). Reference numerals 31 and 32 are temperature sensors provided so as to detect the air temperature of the freezer compartment 20 and the refrigerator compartment 21, respectively. A temperature sensor 33 is fixed to the bottom surface of the cooling chamber 22 in a heat conductive manner.

Next, the control relationship will be described. Reference numeral 34 is a control unit (hereinafter referred to as a microcomputer 34) including a microcomputer or the like. Temperature detecting means 3 having the temperature sensor 31 of the freezer compartment 20 at the input terminal of the microcomputer 34.
5. Temperature detecting means 3 equipped with a temperature sensor 32 for the refrigerating room
6, temperature detection means 37 having a temperature sensor 33 on the bottom surface of the cooling chamber 22 is connected, and the output terminal is provided with the compressor 23,
Drive means 38, 39, 40, 41 such as an electromagnetic relay for driving the blower 25, the first electric damper 28 of the refrigerating compartment 21, and the second electric damper 29 of the cooling compartment 22 are connected.

In such a configuration, normally, the compressor 23 and the blower 25 are turned on by the temperature detecting means 35 based on the temperature of the temperature sensor 31 of the freezer compartment 20, for example.
The intermittent operation of OFF is performed, and the freezer compartment 20 is cooled and maintained at a predetermined temperature (for example, -20 ° C). On the other hand, refrigerator room 2
Temperature detecting means 3 based on the temperature of the temperature sensor 32 of No. 1
The first electric damper 28 is controlled to be opened and closed by 6 to adjust the inflow amount of cold air, and the refrigerating chamber 21 is cooled to a predetermined temperature (for example, 4
C.) is kept cooling.

Next, the operation when the temperature of the cooling chamber 22 rises will be described with reference to the flowchart of FIG. When the temperature of the cooling chamber 22 rises due to, for example, the storage of food before cooling, the temperature of the temperature sensor 33 fixed to the bottom surface of the cooling chamber 22 by heat conduction rises rapidly. And STEP
1, the temperature of the temperature sensor 33 on the bottom surface of the cooling chamber 22 is a predetermined value t
_It is determined whether the temperature is higher or lower than ₁ ° C. (for example, 3 ° C.). When it is determined in STEP 1 that the temperature is high, subsequently in STEP 2, it is determined whether the temperature of the temperature sensor 32 in the refrigerating chamber 21 is higher or lower than a predetermined value t ₂ ° C (for example, 4 ° C).
Wait until it gets low at 2. When it is determined in STEP 2 that the temperature is low, in STEP 3, the second electric damper 29 of the cooling chamber 22 is closed and controlled.

Next, in STEP 4, it is judged whether the temperature of the temperature sensor 33 in the cooling chamber 22 is higher or lower than a predetermined value t ₃ ° C (for example, 3 ° C). STEP4
When it is determined that the temperature is low, the process bypasses STEP 5 and proceeds to STEP 6. In STEP 5, it is determined whether the temperature of the temperature sensor 32 of the refrigerating compartment 21 is higher or lower than a predetermined value t ₄ ° C (for example, 5 ° C), and if it is lower, the operation returns to STEP 3 to repeat the operation. If the temperature is judged to be high in STEP 5, ST
Proceed to EP6. In STEP 6, the closed state of the electric damper 29 of the cooling chamber 22 is released, and the normal control is restored.

In this way, the second electric damper 2 of the cooling chamber 22
When 9 is closed, the amount of air blown into the cooling chamber 22 is correspondingly increased, the heat effect due to the storage of the food before cooling is suppressed, the cooling capacity of the stored food is increased, and the food stored in the cooling chamber is increased. The time taken to cool the to a predetermined temperature (for example, 3 ° C.) is shortened.

[0019]

As described above, according to the refrigerator of the present invention, the following effects can be obtained. (1) Since the cold storage substance installed on the bottom of the processing chamber has a composition that reaches thermal equilibrium at a predetermined temperature, the cooling process of the stored food is performed by the latent heat change of the cold storage substance, and the thermal effect on the refrigeration chamber is suppressed. To be done. (2) By closing the damper device at the inlet of the cooling chamber according to the heat load state of the cooling chamber and the refrigerating chamber and centrally cooling only the cooling chamber, the cooling capacity of the food stored in the cooling chamber is increased,
The time until the stored food is cooled to a predetermined temperature is shortened.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a refrigerator showing an embodiment of the present invention.

FIG. 2 is a control block diagram of the refrigerator shown in FIG.

FIG. 3 is a flowchart of control of the refrigerator in FIG.

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

[Explanation of symbols]

 21 Refrigerating Room 22 Cooling Room 23 Compressor 24 Cooler 25 Blower 28 Refrigerating Room Damper Device (Electric Damper) 29 Cooling Room Damper Device (Electric Damper) 30 Cold Storage Material 32 Cold Room Temperature Sensor 33 Cooling Room Temperature Sensor 34 Microcomputer (control means) 36 Refrigerating room temperature detecting means 37 Cooling room temperature detecting means

Claims (1)

[Claims] 1. A compressor that constitutes a refrigeration cycle, a cooler, a freezing compartment, a temperature detecting means for detecting a temperature inside the freezing compartment, a refrigerating compartment, and a temperature detecting means for detecting a temperature inside the refrigerating compartment. A cooling chamber provided in one part of the refrigerating chamber, a cold storage substance having a composition that reaches thermal equilibrium at a predetermined temperature and is thermally conductively fixed to the bottom face of the cooling chamber. Temperature detecting means, a blower for forcedly blowing the cool air cooled by the cooler to the freezing compartment, the refrigerating compartment, and the cooling compartment, and a first damper device provided at the inlet of the refrigerating compartment to adjust the cold air inflow amount. A second damper device provided at the inlet of the cooling chamber for adjusting the amount of cold air flowing in, and a temperature detecting means on the bottom surface of the cooling chamber detecting a predetermined temperature or higher and a temperature detecting means in the refrigerating room detecting a predetermined temperature or lower. To close the second damper device And a control means for releasing the blockage of the second damper device when the temperature detecting means on the bottom surface of the cooling chamber detects a predetermined temperature or lower, or when the temperature detecting means in the refrigerating chamber detects a predetermined temperature or higher. Refrigerator consisting of.