JPH03207975A - refrigerator - Google Patents

Abstract

PURPOSE:To ensure shortening of thawing time, and prevention of over-cooling and freezing of foods by providing a thawing heater in the interior of a ceiling part duct of a storage chamber and providing an air refluxing fan on the back surface facing a door of the storage chamber, and further opening a cold air introduction passage on the lower part of the refluxing fan and opening and closing a damper located at the cold air introduction inlet by a temperature sensor. CONSTITUTION:A cold air introduction passage 2 from a freezing chamber is opened to a back surface lower part 3a of a storage chamber 3, and a cold air damper 4 is provided on the introduction passage 2. Upon rapid cooling, the cold air damper 4 is opened, and once a refluxing fan 8 is operated, cold air is forcedly introduced into the storage chamber 3 and further a compressor 11 is forcedly continuously operated. After the rapid cooling operation is completed, the actuation value of an ice temperature chamber temperature sensor 5 is shifted to the temperature in the freezing chamber to keep the temperature in the storage chamber 3 within freezing chamber temperature band. Upon rapid thawing, a thawing heater 7 and the refluxing fan 8 are operated, and power supply to the heater 7 is interrupted by a control circuit 16 and the refluxing fan 8 is operated, whereby the cold air damper 4 is opened to forcedly introduce the cold air into the storage chamber 3.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a refrigerator. [Journey's technology] As described in Japanese Unexamined Patent Publication No. 105879/1983, the conventional device is used to inject high temperature air from the refrigerator compartment into the storage compartment for thawing, and for rapid cooling. The structure was such that cold air was introduced into the storage room through a cold air intake that was connected to the storage room.

[Problem to be solved by the invention]

The above-mentioned conventional technique is used when cold iIl. Defrosting is carried out by introducing high-temperature air from the room into the room, so it takes a long time to defrost, and when the temperature of the refrigerator room changes, the defrosting time fluctuates.

In addition, if you try to maintain humidity in a greenhouse, you usually have to run a fan, and during rapid cooling, the storage of I
There was no control to detect the temperature in room E and open/close the tamper at the inlet, so there was a risk that the food would freeze.

The main purpose of the present invention is to shorten the non-freezing time, reduce fluctuations in the freezing temperature due to temperature changes during freezing, and furthermore, use a fan to maintain the temperature of the storage room as a constantly freezing greenhouse. Unlucky is considered bad.

It also prevents food from overcooling and freezing during rapid cooling. Another object of the present invention is to reduce unevenness in thawing food during rapid thawing, and to prevent a fan from freezing.

[Means to solve hearing problems]

In order to shorten the thawing time and to reduce fluctuations in the thawing time due to temperature changes in the refrigerator compartment, the present invention provides a resolution heater inside the ceiling part of the storage compartment, and a heater installed on the door of the storage compartment E. A cross-flow fan is installed on the facing back side to circulate air between the storage chamber and the thawing heater section, and by operating the cross-flow fan, warm air is circulated into the storage chamber for thawing.

Saving iILi! In order to eliminate the need to operate a fan to maintain the temperature of a normal greenhouse, a cold air introduction passage is opened at the bottom of the once-through fan to introduce cold air from the cold*ii. Additionally, during rapid cooling, the temperature in the storage chamber is detected by a temperature sensor installed at the fan's intake port, and the damper at the cold air intake port is opened and closed to prevent food from freezing. Furthermore, during rapid thawing, after stopping the power supply to the heater depending on the temperature or time set in advance by the temperature sensor, the fan is operated for the preset time, and then the cold air damper is opened to store cold air. ．． By introducing this into the chamber, we were able to reduce uneven thawing on the surface and center of food. [Function] The cold air introduction path that introduces cold air from the freezer compartment can eliminate the need to operate the fan that stores and maintains the cold air.During rapid defrosting, the cold air damper closes and is installed inside the tact chamber on the ceiling of the storage compartment. By heating for thawing and operating a tributary fan installed at the back of the storage room, 1N. Since the child is thawed by blowing hot air into the air, it is cold] 1l! Even if the temperature in the room changes, it is difficult for Solution a [time to fluctuate.

If the heater is turned off depending on the temperature or time set in advance by the temperature sensor installed at the intake port of the airflow fan, the fan will be operated for the preset time, and then the cold air damper will be opened. By introducing cold air into the storage chamber, the difference in softness between the surface and center of the food can be reduced and uneven thawing can be reduced. After opening the cold air damper and starting rapid cooling by operating the inflow fan, the temperature sensor detects the temperature in the room E and opens and closes the cold air inlet damper, so the food does not freeze. .

In addition, in synchronization with the defrosting of the refrigerator cooler, the once-through fan alone or the once-through fan and heater are energized for a preset period of time to raise the temperature around the once-through fan and remove boxes attached to the once-through fan. Therefore, freezing of the cross-flow fan can be prevented. The introduction path opens at the lower rear surface 56 of the storage chamber 5, and a cold air damper 4 is provided in the cold air field path 2.

What about 10? The freezing cooling fan operates in synchronization with the compressor 11, and the freezing compartment cooling fan 10 blows cold air into the cold compartment 1 and the refrigerator compartment 12. 13 is the cold R room temperature [111] Thermostact detects the temperature of the refrigerator room and opens and closes with a damper. The cold air damper 4 is
Refrigerator room 11, [It is installed adjacent to the thermostact 13, and freezes! The cold air from the refrigerator compartment 12 is connected to the cold air introduction path 2 of the storage compartment 5 via the cold air damper 4.

The cold air damper 4 detects the temperature with a water chamber temperature sensor 5 for maintaining the storage chamber 3 at the temperature of a normal ice chamber, and opens and closes in response to commands from a control circuit 16. When the cold air damper 4 opens, the cold air from the freezer compartment 1 is guided by the freezing fan 10 through the cold air introduction path 2 to the lower back 5a of the storage room 3 to cool the storage room 3. When the temperature sensor 5 cools down to a predetermined temperature, the cold air damper 4 is closed by a command from the control circuit 11. Since the cold air introduction path 2 opens at the lower rear surface 3a of the storage chamber 3, the storage chamber 5 can be easily filled with the wind pressure of the freezer compartment cooling fan 1o.
can flow into the country.

During rapid cooling, the cold air introduction path 2 opens at the upper rear surface sh,-1 of the storage chamber 3, that is, at the suction port 84 of the tributary fan, so the cold air damper 4 opens and the cross-flow 7 and 8 open. During operation, cold air can be forcefully introduced into the storage chamber 3. Further, during rapid cooling operation, the compression unit 1111 is forced to operate continuously to maintain the temperature of the introduced cold air in a low state.

As rapid cooling progresses, the temperature of the temperature sensor 9 decreases, and when it reaches the preset temperature, the cold air damper 4
By closing, food 15 is prevented from freezing. When the temperature of the temperature sensor 9 rises again and reaches the preset temperature, the cold air damper 4 is opened to introduce cold air. When the rapid cooling operation is completed, the operating value of the ice temperature sensor 5 is shifted to the temperature water of the refrigerated water at a preset time, and the storage R'M, which is normally set in the ice temperature range, is
Maintaining the temperature of S in the refrigerator room temperature range, food 15? ll
It prevents lfi and maintains the perfect temperature for eating and drinking. During rapid defrosting, the control circuit 160 commands the cold air damper 4.
The heater 7 installed inside the ceiling duct 6 of the storage room 1!13 and the page flow fan 8 installed at the back of the storage room are turned on.

The air heated by the defrosting heater 7 is passed through the cross-flow fan 8
The food 15 is sucked in and discharged into the storage chamber 5, and warm air is supplied to the food 15, so that the food 15 can be thawed. Food 1
The air from which heat has been removed by heating the storage room 5 is sucked in through the front intake port 6α of the ceiling duct 6 of the storage room 5 and circulated. As rapid thawing progresses, the power supply to the scale freezing heater 7 is stopped at a temperature preset by a temperature sensor 9 installed at the suction port 8α of the cross-flow fan.

However, if the refrigerator is in quick-freeze mode at the same time, the stored il. If the circumference of chamber 3 is t < fL, the preset temperature is 111 degrees sensor 9'A! L is gone. Then, the thawing progresses or the heating time of the S freezing heater 7 becomes longer, the temperature of the food 15 rises, and the drippings occur. If the ambient temperature of the storage JE chamber 5 fluctuates in this way, the power supply to the non-operating heater 70 is stopped for the time set in the control 11 control 16. After the thawing heater 70 is de-energized, the cross-flow fan 8 is operated for a preset time, and when the storage i1'il5 has cooled down sufficiently, the cold air damper 4 is opened to force cold air into the storage chamber 5. After introducing this, the temperature difference between the surface and the center of the food 150 is reduced, and the unevenness of melting is reduced, and then Solution *V is completed. In addition, in synchronization with the defrosting of the cooler 14 of the cold storage, only the cross-flow fan 8 or the cross-flow fan 8 and the defrosting heater 7 are activated.
is energized for a preset period of time to raise the temperature around the cross-flow fan 8 and remove the crows attached to the cross-flow fan 8. [Effects of the Invention] According to the present invention, when the IL storage room is used as a main greenhouse, there is no need to operate a storage fan, and low &IIf. It has the effect of whispering electricity.

During rapid cooling, when the temperature sensor reaches a preset temperature, the cold air damper closes, allowing the food to cool down to 11 [M].
It has the effect of preventing After the rapid cooling operation is completed, the temperature in the storage room is maintained within the cold room temperature range, which is effective in preventing food from freezing and maintaining the temperature at which it is ready to eat and drink. Rapid defrosting can be done in a short time, and the thawing heater is de-energized based on the temperature sensor or a preset time, so even if the ambient temperature in the storage room fluctuates, the defrosting WL time can be shortened. You can study well without leaking Kaharatsu\・tari or dorikubu.

Furthermore, after the power supply to the thawing heater is stopped, the once-through fan is operated at a preset time, and the cold air damper is opened when the temperature of the storage chamber has cooled sufficiently to force cold air into the storage chamber. This reduces the temperature difference between the surface and center of the Ps frozen food, which has the effect of reducing uneven freezing of the scales.

In addition, since the box attached to the cross-flow fan is removed at the same time as the box of the refrigerator cooler is removed, it has the effect of preventing the cross-flow fan from becoming connected.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of an embodiment of the present invention, Fig. 2 is a front view of a refrigerator according to an embodiment of the present invention, and Fig. 5 is a flowchart of each operation. 1: Refrigeration fi 2; Cold air inlet 3 Storage room 5a; Cold air inlet 3b Cold air inlet 4; Cold air chamber ice 5 Ice greenhouse temperature sensor 6; Ceiling duct 6α゜front inlet 7 Disconnection heater 8: Cross-flow fan 8a Cross-flow fan inlet 9: Temperature sensor 10 Freezer compartment cooling fan 11: Compressor 12 Cold mouse compartment

Claims (1)

[Claims] 1. The upper part of the refrigerator room is equipped with both rapid thawing and rapid cooling functions, and maintains the temperature as an ice room during normal and after rapid thawing, and after rapid cooling for a preset time. A refrigerator characterized by having a storage chamber for maintaining the temperature of the refrigerator. 2. A cross-flow fan for rapid thawing and rapid cooling is provided on the back side facing the door of the storage room, and a cold air introduction path is opened at the bottom of the cross-flow fan for turning the storage room into the ice room. 2. The refrigerator according to claim 1, wherein a cold air introduction path is opened in the fan suction section above the cross-flow fan. 3. A cold air introduction path is connected to the storage chamber, a cold air damper is provided in the cold air introduction path, and when the storage chamber is used as a rapid cooling room, the cold air damper is opened and a cross-flow fan is operated;
When using the storage chamber, in which the compressor is forced to operate continuously during rapid cooling operation, as a rapid thawing chamber, the cold air damper is closed, a heater is provided inside the ceiling duct of the storage chamber, and the compressor is operated continuously. The refrigerator according to claim 1, wherein the refrigerator is thawed by operating the once-through fan. 4. A temperature sensor is provided in the suction section at the top of the once-through fan, and in the case of rapid thawing, the power supply to the heater is stopped at a temperature or time set in advance by the temperature sensor, and
In the case of rapid cooling, the temperature sensor detects a freezing prevention temperature and controls a cold air damper.
Refrigerator as described in. 5. When performing rapid defrosting in the storage room, the heater is de-energized at a temperature or time set in advance by the temperature sensor, the once-through fan is operated for the preset time, and then the cold air damper is opened to release cold air. The refrigerator according to claim 1, wherein a refrigerator is introduced into the storage compartment. 6. The refrigerator according to claim 1, wherein, in synchronization with defrosting of the cooler of the refrigerator, only the once-through fan or the once-through fan and the heater are energized for a preset time to remove frost attached to the once-through fan. .