JPH03267672A - Refrigerator - Google Patents

Abstract

PURPOSE:To suppress temperature rise at the outer periphery of a storage chamber by forcibly operating a compressor during a quick cooling, a quick thawing of a refrigerator and for preset time after the quick thawing. CONSTITUTION:A compressor 11 is forcibly continuously operated at the time of quick cooling to maintain the temperature of chilled gas to be introduced low. At the time of quick thawing, a chilled gas damper 4 is closed by a com mand of a controller 16, the compressor is forcibly continuously operated, and a temperature in a cold storage chamber is lowered to prevent the temperature at the outer periphery of the chamber from abnormally rising. If the quick thawing is advanced, the energization of a thawing heater 7 is stopped at a preset temperature by a temperature sensor 9 set in a suction port 8a of a through fan. When preset time is elapsed after the quick thawing is finished, the compressor is stopped, and the forcibly continuous operation of the compres sor is stopped.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a refrigerator, and in particular to a structure of a refrigerator that combines a rapid storage compartment, a freezing compartment, and a refrigerating compartment, and is provided with a storage compartment that maintains a normal icehouse temperature range. It's about control.

[Conventional technology]

Conventional refrigerators with quick defrosting chambers are, for example,
As described in Publication No. 754, high-temperature air from the refrigerator compartment is introduced into the storage compartment for thawing, and when rapid cooling is performed, cold air is introduced into the storage compartment from a cold air inlet connected to the storage compartment. [Problem to be solved by the invention] The above-mentioned conventional technology introduces high-temperature air from the refrigerator compartment into the storage compartment for thawing, so the outer periphery of the storage compartment (the problem to be solved by the invention) side)
Since the temperature of the refrigerator also increases, if the user touches the outer periphery of the storage compartment during this rapid defrosting, the user will feel uneasy as if the refrigerator compartment is warm.

The present invention has been made in order to solve the above-mentioned problems in the prior art, and is designed to forcefully operate a compressor only for a preset time during and after rapid thawing, thereby suppressing the temperature rise around the outer periphery of the storage chamber. The purpose is to provide a refrigerator with a

[Means for solving the problems] In order to achieve each of the above objects, the basic configuration of the refrigerator according to the present invention includes a freezing compartment and a refrigerating compartment, and a part of the refrigerating compartment has a In a refrigerator equipped with a storage compartment having a refrigerator compartment and a refrigerating compartment, the refrigerator is configured with a control circuit that forcibly operates a compressor for a preset period of time during and after rapid cooling of the storage compartment. be.

Additionally, there is a cross-flow fan located on the back side of the storage chamber, and a first cross-flow fan located below the cross-flow fan and opening at the bottom of the storage chamber.
a second cold air introduction port located at the bottom of the storage chamber and open at the top; a cold air introduction path connecting the freezer compartment and the storage chamber; and a cold air damper provided in the cold air introduction path. and a thawing heater provided on the ceiling of the storage room.

The configuration of the control method is that, in a refrigerator comprising a freezer compartment, a refrigerating compartment, and a storage compartment including a rapid storage compartment, a freezing compartment, and a refrigerating compartment in a part of the refrigerator compartment, a cross-flow fan located at the back of the storage compartment; a first cold air introduction port located at the bottom of the cross-flow fan and opening at the bottom of the storage chamber; a second cold air introduction port located at the bottom of the storage chamber and opening at the top; Equipped with a cold air introduction path that connects the storage room, and a control circuit that forces the compressor to operate when the cold air damper installed in this cold air introduction path is closed, and stops the compressor operation after a preset time has elapsed after rapid defrosting. It is something that

[Effect]

The functions of each of the above technical means are as follows.

A cold air introduction path for introducing cold air from the freezer compartment opens at the lower rear of the storage chamber, a cold air damper is provided in the cold air introduction path, the cold air damper is closed, and a thawing heater is installed on the ceiling of the storage room; A control circuit is configured to operate a once-through fan installed at the back of the storage room to forcibly operate the compressor for a preset time during rapid thawing of the storage room and after the completion of thawing. Therefore, the temperature around the outer periphery of the storage chamber does not become abnormally high during thawing, which prevents the user from feeling uneasy.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

FIG. 1 is a sectional view of a refrigerator according to an embodiment of the present invention, FIG. 2 is a front view showing the inside of the refrigerator of FIG. 1, and FIG. 3 is a flowchart showing a rapid cooling control procedure. FIG. 4 is a flowchart showing the rapid defrosting control procedure.

In Figure 1.2, 1 is a freezer compartment and 12 is a refrigerator compartment. 2 is a cold air introduction path that introduces cold air from the freezer compartment; 3 is a storage room with an HWI installed in the upper part of the refrigerator compartment 12;
4 is a cold air damper provided in the cold air introduction path 2, which has both rapid defrosting and rapid cooling functions as described below.

6 is a ceiling duct formed in the ceiling of the storage room, 6a is a front intake port thereof, and 7 is a defrosting heater provided in the ceiling duct.

8 is a cross-flow fan located at the back of the storage chamber 3; 8a is a
The inlet of the once-through fan is shown.

3a is located below the cross-flow fan 8 and is connected to the storage chamber 3.
A first cold air introduction port 3b that opens at the bottom of the cross-flow fan is a second cold air introduction port that opens at the top of the storage chamber 3 and is located above the cross-flow fan.

9 is a temperature sensor provided at the inlet 8a of the cross-flow fan.

10 is a freezer compartment cooling fan, which is operated in synchronization with the compressor 11, and the freezer compartment cooling fan 1o circulates cold air to the freezer compartment l and the refrigerator compartment 12. 13 is a temperature control thermostat for the refrigerator compartment, which operates in synchronization with the compressor 11. The cold air damper 4, which detects the temperature of the room and opens and closes the cold air damper, is installed adjacent to the temperature control thermostat 13 for the refrigerator compartment.
The cold air from the refrigerator compartment 12 is connected to the cold air introduction path 2 of the storage compartment 3 via the cold air damper 4.

The cold air damper 4 detects the temperature with an ice room temperature sensor 5 for maintaining the storage room 3 at the temperature of a normal ice room, and opens and closes in response to a command from a control circuit 16.

When the cold air damper 4 opens, the cold air from the freezer compartment 1 is guided by the freezer compartment cooling fan 10 via the cold air introduction path 2 to the first cold air introduction port 3a of the storage compartment 3 to cool the storage compartment 3. When the ice room temperature sensor 5 cools down to a predetermined temperature, the cold air damper 4 closes in response to a command from the control circuit 16.

Moreover, since the cold air introduction path 2 opens to the first cold air introduction port 3a of the storage compartment 3, cold air can be easily caused to flow into the storage compartment 3 by the wind pressure of the freezer compartment cooling fan 10.

Next, the control operations for rapid cooling and rapid defrosting of such a refrigerator will be explained with reference to the flowcharts shown in FIGS. 3 and 4, respectively. In the following explanation, the numbers in parentheses are the step numbers of the flowchart.

In the flowchart, the cold air damper 4 is simply referred to as a damper, the cross-flow fan 8 is simply referred to as a fan, the thawing heater 7 is simply referred to as a heater, and the temperature sensor is simply referred to as a sensor.

First, rapid cooling will be explained. During the rapid cooling operation, the compressor 11 is forced to operate continuously (step 1) to maintain the temperature of the introduced cold air low.

Since the cold air introduction path 2 communicates with the second cold air introduction port 3b at the upper rear side of the storage room 3, that is, the inlet 88 of the cross-flow fan, the cold-air damper 4 opens (step 2) and the cross-flow fan 8 operates (step 2). Step 3) Then, cold air can be forcibly introduced into the storage chamber 3.

As rapid cooling progresses, the temperature of the temperature sensor 9 decreases, and when the preset temperature is reached (step 4)
), the cold air damper 4 is closed (step 5) to prevent the food 15 from freezing.

When the temperature of the temperature sensor 9 rises again and reaches the preset temperature, the cold air damper is opened (step 6) to introduce cold air.

Close the cold air damper 4 (step 7) and turn on the cross-flow fan 8.
(step 8) and the rapid cooling operation is completed (step 9), the operating value of the ice room temperature sensor 5 is shifted to the temperature of the refrigerator compartment 12 for a preset time, and the normal ice room temperature range is maintained. By maintaining the temperature of the storage room 3 within the refrigerator room temperature range (step 10), it is possible to prevent the food 15 from freezing and maintain the temperature at which it is ready to eat and drink.

Next, rapid defrosting will be explained.

In response to a command from the control circuit 16, the cold air damper 4 is closed, the compressor is forced to operate continuously, and the temperature inside the refrigerator compartment is lowered. In other words, this prevents the temperature around the storage chamber from rising abnormally. (Step 11) Heater 7 installed inside the ceiling duct 6 of the storage room 3
Then, the cross-flow fan 8 installed at the back of the storage room is operated.

(Step 12) The air heated by the thawing heater 7 is sucked into the cross-flow fan 8 and discharged into the storage chamber 3, supplying warm air to the food 15, so that the food 15 can be thawed. The air that has heated the food 15 and has been deprived of heat is sucked in through the front intake port 6a of the ceiling duct 6 of the storage room 3 and circulated.

As rapid thawing progresses, the energization of the thawing heater 7 is stopped at a temperature preset by a temperature sensor 9 installed at the inlet 8a of the cross-flow fan. (Step 13) At this time, in the present invention, since the compressor is forcibly operated, the ambient temperature of the storage chamber 3 becomes low, and the temperature sensor 9 does not reach the preset temperature. Then, thawing progresses, but the energization time of the thawing heater 7 becomes longer, and only the temperature of the food 15 increases. When the ambient temperature of the storage room 3 fluctuates in this manner, the energization of the defrosting heater 7 is stopped according to the defrosting time set by the control circuit 16 (step 14). (Step 15) After the power supply to the defrosting heater 7 is stopped, the cross-flow fan 8 is operated for a preset time 1, and when the temperature in the storage room 3 has cooled sufficiently, the cold air damper 4 is opened (Step 16) to blow the cold air. After the food is forcibly introduced into the storage chamber 3 to reduce the temperature difference between the surface and center of the food 15 and to reduce uneven thawing, the 1 cross-flow fan 8
(step 17), and the decompression is completed. (Step 18) Also, in synchronization with the defrosting of the cooler 14 of the refrigerator, the temperature around the cross-flow fan 8 is increased by energizing only the cross-flow fan 8 or the cross-flow fan 8 and the defrosting heater 7 for a preset time. to remove frost adhering to the cross-flow fan 8.

Furthermore, after the rapid defrosting is completed in step 18, the compressor is stopped in step 19 when a preset time has elapsed, and the forced continuous operation of the compressor is stopped.

According to this embodiment, when the storage room is used as a rapid thawing room, the compressor is forced into operation at the same time as the cold air damper that supplies cold air to the storage room is closed, and thawing is completed and a preset time has elapsed. Since the forced operation of the compressor is continued until the storage temperature is reached, the temperature at the outer periphery of the storage chamber does not increase and the user does not feel uneasy.

〔Effect of the invention〕

As described above, according to the present invention, even though a heater is used inside the storage chamber during rapid defrosting, the temperature of the outer peripheral wall of the storage chamber does not rise abnormally, making the user feel uneasy. It is something that cannot be given.

During rapid cooling, when the temperature sensor reaches a preset temperature, the cold air damper closes, thereby preventing the food from freezing.

After the rapid cooling operation is completed, the temperature of the storage compartment is maintained within the refrigerator compartment temperature range, which has the effect of preventing food from freezing and maintaining the temperature at which it is ready to eat and drink.

Furthermore, since the frost adhering to the cross-flow fan is removed in synchronization with the defrosting of the cooler of the refrigerator, it is effective in preventing the cross-flow fan from freezing.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a refrigerator according to an embodiment of the present invention, FIG. 2 is a front view showing the inside of the refrigerator of FIG. 1, and FIG. 3 is a flowchart showing a rapid cooling control procedure. FIG. 4 is a flowchart showing the rapid defrosting control procedure. 1... Freezer room, 2... Cold air introduction path, 3... Storage room, 3a... First cold air introduction port, 3b... Second cold air introduction port, 4... Cold air damper , 5... Ice room temperature sensor 6... Ceiling duct, 6a... Front intake port,
7... Thawing heater, 8... Cross-flow fan, 8
a... Once-through fan inlet, 9... Temperature sensor,
10... Freezer room cooling fan, 11... Compressor, 12
...Refrigerating room, 13... Temperature control thermostat for refrigerating room, 14... Cooler, 15... Food, 16...
control circuit. Figure 1 Horse (2) 0...=Vn power "to') □6shi'5Pfushishi17)・
・Rokumomi P Kitao Imakuchi

Claims (1)

[Scope of Claims] 1. A refrigerator comprising a freezer compartment, a refrigerator compartment, and a storage compartment having both rapid thawing and rapid cooling functions in a part of the refrigerator compartment, in which the storage compartment is rapidly cooled and thawed. A refrigerator comprising a control circuit that forcibly operates a compressor for a preset period of time after medium and rapid defrosting. 2. A refrigerator comprising a freezer compartment, a refrigerator compartment, and a storage compartment having both rapid defrosting and rapid cooling functions in a part of the refrigerator compartment, a cross-flow fan located at the back of the storage compartment, and this cross-flow fan. a first cold air introduction port located at the bottom of the cross-flow fan and opening at the bottom of the storage chamber; a second cold air introduction port located at the top of the cross-flow fan and opening at the top; Claim 1 characterized in that a cold air introduction path to be connected, a cold air damper provided on the cold air introduction path, and a thawing heater provided on the ceiling of the storage room are provided.
Refrigerator as described in section. 3. In a refrigerator comprising a freezer compartment, a refrigerator compartment, and a storage compartment having both rapid defrosting and rapid cooling functions in a part of the refrigerator compartment, a cross-flow fan located at the back of the storage compartment, and this cross-flow fan. a first cold air introduction port located at the bottom of the cross-flow fan and opening at the bottom of the storage chamber; a second cold air introduction port located at the top of the cross-flow fan and opening at the top; A control circuit is configured to forcibly operate the compressor when the cold air damper connected to the cold air introduction path is closed, and to stop the operation of the compressor after a preset time has elapsed after rapid defrosting. A refrigerator according to claim 1, characterized in that: