JP2003083667A - Controller for freezer/refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that the power consumption of the conventional refrigerator increases due to defrosting operation, because a defrosting heater is energized until defrosting is completed immediately after the defrosting operation is started. SOLUTION: A freezer/refrigerator is constituted of at least two or more rooms of a cold storage room, a refrigerating room, etc., and sends cold air cooled by means of a cooler to the rooms through cold air discharging air courses by means of a cold air forcibly circulating blower. In the air courses, motor-driven dampers for temperature adjustment are respectively provided toward the rooms. At the time of performing the defrosting operation, the temperature of the cooler is raised by bringing back the cold air in the cold storage room maintained at a relatively high temperature to the cold air discharging air course by forcibly convecting the cold air from the cold air forcibly circulating blower by opening the first motor-driven damper for the cold storage room in a state where a compressor is stopped before the defrosting heater is energized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator / freezer, and more particularly to a controller for a refrigerator / freezer which controls opening / closing of various devices installed in a cool air discharge air passage of each room.

[0002]

2. Description of the Related Art In recent years, many refrigerating refrigerators having cooling chambers of at least two temperature zones are often provided with an electric damper for adjusting the amount of cool air in the cool air discharge air passage to each compartment. It is generally used.

FIG. 9 is a sectional view showing a conventional refrigerator.
In the figure, reference numeral 1 denotes a heat insulating box of a refrigerator main body, which is composed of a refrigerating room 2 and a freezing room 3, and a cool air discharge air passage 5 having a cooler 4 built therein is provided on the back surface. Reference numeral 6 is a compressor, and 7 is a cool air forced circulation blower, which is arranged above the cooler 4.
Reference numeral 8 denotes a defrosting heater provided below the cooler 4.
Reference numeral 9 is a first temperature control electric damper for a refrigerating compartment, which is provided at the refrigerating compartment inlet of the cold air discharge air passage 5. Reference numeral 10 is a second temperature-adjusting electric damper for the freezer compartment, which is provided at the freezer compartment inlet of the cold air discharge air passage.

The control of the first temperature adjusting electric damper for the refrigerating room and the second temperature adjusting electric damper for the freezing room and the flow of cold air during defrosting of the cooler configured as described above will be described. FIG. 10 is a control time chart, and FIG. 11 is a control flow chart showing the control state during defrosting.

In the control time chart of FIG. 10, at time A, the operation of the compressor 6 and the cold air forced circulation fan 7 is stopped, and at the same time, the defrosting heater 8 is turned on to start energization. At this time, the first temperature adjusting electric damper 9 for the refrigerating compartment and the second temperature adjusting electric damper 10 for the freezing compartment are closed to suppress the temperature rise of the refrigerating compartment 2 and the freezing compartment 3, and the defrosting heater is used. 8 is turned on and defrosting of the cooler 4 is started. Then, at time B, the defrosting heater 8 is turned off, and at the same time, the compressor 6 and the cold air forced circulation blower 7 are started to operate, and the first temperature control electric damper 9 for the refrigerating room and the second temperature controlling second damper for the freezing room are provided.
The temperature adjusting electric damper 10 is also opened.

Next, the control flowchart of FIG. 11 will be described. In the figure, at the same time when the defrosting operation is started in step S00, the compressor 6 is stopped in step S01, the first temperature adjustment electric damper 9 and the second temperature adjustment electric damper 10 are closed in step S02, and the cool air forced circulation blower is used. 7 is also stopped, and energization of the defrosting heater 8 is started,
The defrosting is completed in step S03, and the defrosting operation is finished in step S04.

Therefore, the flow of cold air during defrosting of the cooler is completed by closing the first temperature adjusting electric damper 9 and the second temperature adjusting electric damper 10 so that the cooler defrosting is completed in the cool air discharge air passage. No longer flows.

As another conventional example, a compressor for compressing a gas refrigerant, a condenser for liquefying the compressed gas refrigerant, a decompression device for decompressing the liquefied liquid refrigerant, and a gasification for the decompressed liquid refrigerant. In a refrigerator equipped with a refrigeration cycle configured by using an evaporator and connecting them with piping pipes, and in a refrigerator equipped with a defrosting heater for the evaporator, the compressor is stopped for a predetermined time immediately before the defrosting heater is energized. A technique having a control device is disclosed in Japanese Patent Laid-Open No. 10-314069.

Further, as another conventional example, by supplying the residual cold air of the evaporator to the refrigerating compartment while the compressor motor is stopped, it is possible to prevent the freshness of the food stored in the refrigerating compartment from being deteriorated. The technology of an operation control device and method for a refrigerator that can be used is disclosed in JP-A-10-89829.

[0010]

In the above-mentioned conventional refrigerator-freezer control device, the defrosting heater is constantly energized from the start of defrosting to the end of defrosting, resulting in an increase in power consumption.

Further, in the above-described conventional control device, since the defrosting is performed only by the heat amount of the defrosting heater, there is a problem that the energization time of the heater becomes long and the temperature rise in the refrigerator increases.

[0012]

A control device for a refrigerator / freezer according to the present invention comprises a plurality of chambers of at least a refrigerating room and a freezing room, and cool air cooled by a cooler is a blower for forced circulation of cold air. At this time, air is blown to the plurality of chambers through the cool air discharge air passage, and temperature-controlled electric dampers are provided in the cool air discharge air passage toward the plurality of chambers respectively, and a defrosting heater energization is performed during defrosting operation. Before the compressor was stopped, the first temperature control electric damper for the refrigerating compartment was opened, and the cool air in the cool air forced circulation blower was forced to convection to bring the cool air in the refrigerating compartment into the cool air discharge air passage. The temperature of the cooler is raised by recalling it.

Further, in the control device for the refrigerator / freezer according to the present invention, with the defrosting heater in the OFF state, the cool air is forcedly convected by the cool air forced circulation fan to raise the cooler temperature to cool the cooler. Defrosting is done.

Further, in the control device for a refrigerator / freezer according to the present invention, the cooler is forcedly convected by the cool air forced circulation fan with the second temperature adjusting electric damper for the freezer compartment closed. This is to defrost the cooler by raising the temperature.

Further, in the control device for a refrigerator / freezer according to the present invention, after the cool air is forced to convection in the refrigerator by the cool air forced circulation fan to raise the cooler temperature, the defrosting heater is turned on.
It heats the cooler to defrost the cooler.

Further, the control device for a refrigerator / freezer according to the present invention comprises at least a plurality of chambers, at least a refrigerating room and a freezing room, and has a deodorizing air duct, and the plurality of chambers or the deodorizing air ducts are provided in the deodorizing air duct. The cool air cooled by the cooler is blown to the plurality of chambers or deodorizing air passages through the cool air discharge air passage by the blower for forced cooling of the cool air, and the plurality of chambers or deodorizing air is provided in the cool air discharge air passage. In addition to providing temperature-controlled electric dampers toward the air passage, a defrost heater is provided below the cooler, and after defrost heater energization is stopped during defrost operation, a cool air forced circulation blower is provided in the deodorizing air passage. Forced convection is generated to defrost the residual frost of the cooler.

Further, in the control device for a refrigerator / freezer according to the present invention, the first temperature adjusting electric damper for the refrigerating room during the defrosting operation is closed, and after the defrosting heater is turned off, the cool air forced circulation fan is used to deodorize. Forced convection is generated in the air passage to defrost the residual frost on the cooler.

Further, according to the control device of the refrigerator / freezer according to the present invention, the second temperature adjusting electric damper for the freezing room during the defrosting operation is closed, and after the defrosting heater is turned off, the cool air forced circulation fan is used to deodorize. Forced convection is generated in the air passage to defrost the residual frost on the cooler.

Further, the control device for a refrigerator / freezer according to the present invention is provided with a first temperature adjusting electric damper for the refrigerating room, a second temperature adjusting electric damper for the freezing room or a third temperature adjusting for deodorizing during the defrosting operation. The defrosting is performed by generating forced convection in the deodorizing air passage by the blower for forced circulation of cold air with the electric damper for use closed.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. Hereinafter, the refrigerator according to the first embodiment of the present invention will be described. 1 is a sectional view showing the structure of a refrigerator according to Embodiment 1 of the present invention. In the figure, reference numeral 1 denotes a heat insulating box of a refrigerator main body, which is composed of a refrigerating room 2 and a freezing room 3, and a cool air discharge air passage 5 having a cooler 4 built therein is provided on the back surface. Reference numeral 6 is a compressor, and 7 is a cool air forced circulation blower, which is arranged above the cooler 4. Reference numeral 8 denotes a defrosting heater provided below the cooler 4. Reference numeral 9 is a first temperature control electric damper for a refrigerating compartment, which is provided at the refrigerating compartment inlet of the cold air discharge air passage 5. Reference numeral 10 denotes a second temperature adjustment electric damper for the freezing compartment, which is provided at the freezing compartment inlet of the cold air discharge air passage 5.

FIG. 2 is a control time chart showing the control of the refrigerator according to the first embodiment, and FIG. 3 is the control time chart of the first embodiment.
5 is a flowchart showing control by the. In FIG. 2, before the energization of the defrosting heater 8 is started, at the time A, the first temperature control electric damper 9 for the refrigerating compartment is opened and the second temperature control electric damper 10 for the freezing compartment is closed to cool the air. The forced circulation blower 7 is operated to return cold air having a relatively high temperature in the refrigerating compartment 2 from the inlet of the refrigerating compartment to the cold air discharge air passage 5. The cooler 4 temperature is raised by the relatively high temperature cold air in the refrigerating compartment 2, and when the cooler temperature T> T1, the defrost heater 8 is energized at time B and the cold air forced circulation blower 7 is turned off.
The first temperature control electric damper 9 for the refrigerating room is closed to start defrosting, and the defrosting operation is finished at time C. As a result, the time for energizing the defrost heater 8 can be shortened and energy saving of the refrigerator can be realized.

Next, a flow chart showing the control according to the first embodiment shown in FIG. 3 will be described. Step S10
The defrosting operation is started at. Next, in step S11, the compressor is stopped. Then, step S12
In, open the first temperature control electric damper 9 for the cold room,
The blower 7 for forced cold air circulation is turned on, and cold air having a relatively high temperature in the refrigerating compartment 2 is returned from the inlet of the refrigerating compartment back into the cool air discharge air passage 5. Then, in step S13, the cooler temperature is determined in step S13, and the cooler temperature is T> T1.
If so, the process proceeds to step S14, where the cooler temperature is T> T
If not 1, it is determined again whether the cooler temperature is T> T1. In step S14, the first temperature control electric damper 9 for the refrigerating compartment is closed, and at the same time, the defrosting heater 8 is energized to start the defrosting operation of the cooler. Step S1
Defrosting is completed at 5. When the defrosting of the cooler 4 is completed, the process proceeds to step S16, the energization of the defrosting heater 8 is stopped,
The defrosting operation is ended in step S17.

By this control, the effect of cooling the inside of the refrigerator is obtained, the energization of the defrosting heater 8 is shortened, and the defrosting heater 8 is
It is possible to prevent the temperature of the refrigerating room 2 from rising when the power is turned on.

In the first embodiment, the description has been given of the refrigerator consisting of the freezing compartment and the refrigerating compartment. However, at least the refrigerating compartment and the refrigerating compartment are composed of two or more refrigerators, and the cool air cooled by the cooler is used. A blower for forced circulation of cold air blows air through the cold air discharge air passages to the refrigerating room and the freezer compartment, and each of the cold air discharge air passages has a plurality of temperature control motors in the cold air discharge air passages. As long as the refrigerator is provided with a damper and is provided with a defrosting heater for the cooler, the number of the rooms is not limited to this, depending on the number of the rooms.

The first temperature-controlled electric damper 9 for the refrigerating compartment
Opened, but not limited to refrigerating rooms. Any temperature control electric damper for a room in a temperature range higher than the cooler temperature during defrosting may be used.

Embodiment 2. FIG. 4 is a sectional view of the refrigerator according to the second embodiment of the present invention. In the figure, reference numeral 1 denotes a heat insulating box of a refrigerator main body, which is composed of a refrigerating room 2 and a freezing room 3, and a cool air discharge air passage 5 having a cooler 4 built therein is provided on the back surface. Reference numeral 6 is a compressor, and 7 is a cool air forced circulation blower, which is arranged above the cooler 4. Reference numeral 8 denotes a defrosting heater provided below the cooler 4. Reference numeral 9 is a first temperature control electric damper for a refrigerating compartment, which is provided at the refrigerating compartment inlet of the cold air discharge air passage 5. Reference numeral 10 denotes a second temperature adjustment electric damper for the freezing compartment, which is provided at the freezing compartment inlet of the cold air discharge air passage 5. Reference numeral 11 is a deodorizing air passage, and 12 is a third temperature adjusting electric damper for the deodorizing air passage provided at the outlet of the deodorizing air passage.

FIG. 5 is a control time chart showing the control of the refrigerator according to the second embodiment, and FIG. 6 is this embodiment.
3 is a control flowchart of 2.

In FIG. 5, before the energization of the defrosting heater 8 is started, at time A, the first temperature control electric damper 9 for the refrigerating room is closed, the second temperature control electric damper 10 for the freezing room is closed, and the deodorization is performed. With the third temperature control electric damper 12 for the air passage open, the defrosting heater 8 is energized to start defrosting. Time B
After the defrosting of the cooler 4 is completed, the energization of the defrosting heater 8 is stopped, and the residual heat of the defrosting heater 8 and the cold air forced circulation blower 7
By using the air around the cooler that has risen due to the operation of, the forced defrosting of the cool air to the deodorizing air passage completes the defrosting of the frost remaining in the cooler 4 until time C. At time C, the compressor is turned on, the first temperature adjustment electric damper 9 for the refrigerating compartment is opened, the second temperature adjustment electric damper 10 for the freezing compartment is opened, and the third temperature adjustment electric damper for the deodorizing air passage is opened. 12 is closed and normal refrigerator operation is started.

Next, a flow chart showing the control according to the second embodiment shown in FIG. 6 will be described. Step S20
The defrosting operation is started at. Next, in step S21, the compressor is stopped. Then, step S22
At, the first temperature control electric damper 9 for the refrigerator compartment is closed,
The second temperature adjusting electric damper 10 for the freezer compartment is closed, the third temperature adjusting electric damper 12 for deodorization is opened, the cool air forced circulation fan 7 is turned on, and the defrosting heater 8 is energized. Then, the process proceeds to step S23 and step S13.
Then, the cooler temperature is determined. If the cooler temperature is T> T1, the process proceeds to step S24. If the cooler temperature is not T> T1, it is determined again whether the cooler temperature is T> T1. In step S24, the energization of the defrosting heater 8 is stopped, and the process proceeds to step S25. In step S25, the cool air forced circulation fan 7 is turned on in the deodorizing air passage 11 to remove the frost remaining in the cooler 4 by forced convection. When the defrosting is completed in step S26, the process proceeds to step S27 to end the defrosting operation.

In the second embodiment, the refrigerator constituted by the freezer compartment and the refrigerator compartment has been described, but the cold air cooled by the cooler is constituted by at least two refrigerator compartments and freezer compartments. A blower for forced circulation of cold air blows air through the cold air discharge air passage to the refrigerating room and the freezer compartment, and each cold air discharge air passage is provided with a plurality of electric dampers in the respective cold air discharge air passages. If the refrigerator is provided with a defrosting heater for the cooler, the number of rooms and the configuration are not limited to this.

In the second embodiment, the forced convection to the deodorizing air passage 11 is used, but it is not limited to this as long as the air passage and the space in which the forced convection is generated can be secured.

Embodiment 3. FIG. 7 is a control time chart showing the control of the refrigerator according to the third embodiment, and FIG. 8 is a control flow chart of the third embodiment.

In the control time chart showing the third embodiment according to FIG. 7, the first temperature control electric damper 9 for the refrigerating room is opened at time A before the energization of the defrosting heater 8 is started.
With the second temperature control electric damper 10 for the freezer compartment closed and the third temperature control electric damper 12 for deodorization open, the cold air forced circulation fan 7 is operated. As a result, cold air having a relatively high temperature in the refrigerating compartment 2 from the inlet of the refrigerating compartment is returned to the cool air discharge air passage 5. The temperature of the cooler 4 is raised by the relatively high temperature cold air in the refrigerating room 2, and when the cooler temperature T> T1, the defrost heater 8 is energized at time B, the cold air forced circulation blower 7 is turned on, and the refrigerating process is performed. First temperature-controlled electric damper 9 for room
Is closed to start defrosting, and the defrosting operation ends at time C. At time C, the defrosting heater 8 is turned off and the residual heat of the defrosting heater 8 and the air around the cooler increased by the operation of the cold air forced circulation fan 7 are used until the time D, and the deodorizing air passage 11
The defrosting of the frost remaining in the cooler 4 until time D is completed by the forced forced convection of cold air to the. At time D, the compressor is turned on, the first temperature adjustment electric damper 9 for the refrigerating compartment is opened, the second temperature adjustment electric damper 10 for the freezing compartment is opened, and the third temperature adjustment electric damper for the deodorizing air passage is opened. 12 is closed and normal refrigerator operation is started. As a result, the time for energizing the defrost heater 5 can be shortened, and energy saving of the refrigerator can be realized.

Next, a flow chart showing the control according to the third embodiment shown in FIG. 8 will be described. Step S30
The defrosting operation is started at. Next, in step S31, the compressor is stopped. Then, step S32
In, the first temperature control electric damper 9 for the refrigerating room is opened, the second temperature control electric damper 10 for the freezing room is closed, the third temperature controlling electric damper 12 for deodorization is opened, and a blower for forced cooling air circulation. 7 is turned on, and cold air having a relatively high temperature in the refrigerating compartment 2 is returned to the cool air discharge air passage 5 from the inlet of the refrigerating compartment. Then, the process proceeds to step S33, the cooler temperature is determined in step S33, and if the cooler temperature is T> T1, the process proceeds to step S34. If the cooler temperature is not T> T1, the cooler temperature is T again. > Determine if T1. In step S34, the first temperature adjustment electric damper 9 for the refrigerating compartment is closed, and at the same time, the defrosting heater 8 is energized to start the defrosting operation of the cooler 4. After the start, the process proceeds to step S35. In step S35, the cooler temperature is determined. If the cooler temperature is T> T2, the process proceeds to step S36. If the cooler temperature is not T> T2, the cooler temperature is determined again. In step S36, the energization of the defrosting heater 8 is stopped, the process proceeds to step S37, and the residual heat of the heater,
And, the cooler 4 is used by forced convection in the deodorizing air passage 11 by the cool air forced circulation blower 4 by using the increased air around the cooler.
Defrost the remaining frost. When the defrosting is completed in step S38, the process proceeds to step S39 to end the defrosting operation.

As a result, the cooling effect of the refrigerating chamber can be obtained, so that the energizing time of the defrosting heater 8 at the time of defrosting can be shortened,
It is possible to suppress the temperature rise of the refrigerating room 2 and the freezing room 3 during the defrosting operation, which can realize the energy saving of the refrigerator, and improve the food freshness retention in the refrigerator.

In the third embodiment, the refrigerator composed of the freezer compartment and the refrigerating compartment has been described, but at least the refrigerator compartment and the freezer compartment are provided, and the cool air cooled by the cooler is used. A blower for forced circulation of cold air blows air through the cold air discharge air passages to the refrigerating room and the freezer compartment, and each of the cold air discharge air passages has a plurality of electric dampers in the cold air discharge air passages. If the refrigerator is equipped with a defrosting heater for the cooler, the number of rooms and the configuration are not limited to this.

Although the first temperature adjustment electric damper 9 for the refrigerating compartment is opened, it is not limited to the refrigerating compartment 2. Any electric damper for adjusting the temperature of a room in a temperature range higher than the cooler temperature during defrosting may be used.

According to the first, second and third embodiments described above, it is possible to provide a refrigerator in which the temperature rise in the refrigerator during defrosting is suppressed and the food preservability is improved.

Further, according to the first, second and third embodiments described above, it is possible to provide a refrigerator excellent in energy saving by suppressing the temperature rise in the refrigerator during defrosting.

[0040]

The control device for a refrigerator / freezer according to the present invention is composed of a plurality of chambers of at least a refrigerating room and a freezing room, and cools air cooled by a cooler with a blower for forced circulation of cold air. Blows air to multiple chambers through the cool air discharge air passage,
A first temperature control for the refrigerating chamber is provided in the cold air discharge air passage, each of which is provided with an electric damper for temperature control toward the plurality of chambers, and the compressor is stopped before energizing the defrosting heater during defrosting operation. The electric damper for the cold air is forced to open, and the cool air in the blower for forced circulation of the cool air is forced to return the cold air in the relatively high refrigerating chamber into the cold air discharge air passage to raise the cooler temperature. This has the effect of suppressing the temperature rise in the interior refrigerating compartment and providing a refrigerator with high food preservability.

Further, the control device of the refrigerator / freezer of the present invention is such that the defrosting heater is in the OFF state, and the cool air is forced to convection in the chamber by the cool air forced circulation blower to raise the cooler temperature and cool the cooler. Since it is configured to perform defrosting, there is an effect that the energization time of the defrosting heater can be shortened and the refrigerator energy can be saved.

Further, the control device for the refrigerator / freezer of the present invention is such that the second temperature adjusting electric damper for the freezer compartment is closed to force convection of the cool air by the cool air forced circulation blower to cool the refrigerator. Since the configuration is such that the temperature is raised to defrost the cooler, it is possible to suppress the temperature rise in the refrigerating chamber during defrosting, and it is possible to provide a refrigerator with high shelf life for food.

Further, in the control device for a refrigerator / freezer of the present invention, the cool air is forcibly convected in the refrigerator by the blower for forced circulation of the cool air to raise the cooler temperature, and then the defrosting heater is turned on to turn on the cooler. Since it is configured to heat and defrost the cooler,
It has the effect of providing a refrigerator with high storage stability of food.

Further, the control device for a refrigerator / freezer of the present invention is composed of a plurality of chambers of at least a refrigerating room and a freezing room, and has a deodorizing air passage, and the plurality of the chambers or the deodorizing air passages are provided. The cool air cooled by the cooler is blown to the plurality of chambers or deodorizing air passages through the cool air discharge air passage by the blower for forced cooling of the cool air, and the plurality of chambers or deodorizing air is provided in the cool air discharge air passage. In addition to providing temperature-controlled electric dampers toward the air passage, a defrost heater is provided below the cooler, and after defrost heater energization is stopped during defrost operation, a cool air forced circulation blower is provided in the deodorizing air passage. Since forced convection is generated and the defrosting of the remaining frost of the cooler is performed, the energization time of the defrosting heater can be shortened and the temperature rise in the refrigerating chamber during defrosting can be suppressed. Providing a refrigerator that can store food Has the effect that can be served.

Further, in the control device for a refrigerator / freezer of the present invention, the deodorizer is deodorized by the cool air forced circulation fan after the defrost heater is turned off while the first temperature adjusting electric damper for the refrigerating room is closed during the defrosting operation. Since forced convection is generated in the air passage to defrost the remaining frost of the cooler, the energizing time of the defrosting heater can be shortened and the temperature rise in the refrigerating room during defrosting can be prevented. This has the effect of suppressing the energy consumption of the refrigerator.

Further, the control device for the refrigerator / freezer of the present invention is such that the second temperature adjusting electric damper for the freezing chamber during the defrosting operation is closed, and after the defrosting heater is turned off, it is deodorized by the cool air forced circulation fan. Since forced convection is generated in the air passage to defrost the residual frost of the cooler, it is possible to suppress the temperature rise in the refrigerating room during defrosting, and the food is highly storable. Has the effect of providing a refrigerator that can be used with confidence.

Further, the control device for the refrigerator / freezer according to the present invention comprises a first temperature adjusting electric damper for the refrigerating room during defrosting operation,
Second temperature control electric damper for freezer or third for deodorization
With the electric damper for temperature control closed, the cooler forced circulation fan creates forced convection in the deodorizing air passage to perform defrosting, so the energizing time of the defrosting heater should be shortened. It is possible to suppress the temperature rise in the refrigerating chamber during defrosting and to contribute to the reduction of power consumption.

[Brief description of drawings]

FIG. 1 is a sectional view showing a control device for a refrigerator-freezer according to Embodiment 1 of the present invention.

FIG. 2 is a control time chart diagram showing the control device for the refrigerator-freezer according to Embodiment 1 of the present invention.

FIG. 3 is a control flowchart showing the control device for the refrigerator-freezer according to Embodiment 1 of the present invention.

FIG. 4 is a sectional view showing a control device for a refrigerator-freezer according to Embodiment 2 of the present invention.

FIG. 5 is a control time chart showing a control device for a refrigerator-freezer according to Embodiment 2 of the present invention.

FIG. 6 is a control flowchart showing a control device for a refrigerator-freezer according to Embodiment 2 of the present invention.

FIG. 7 is a control time chart diagram showing a control device for a refrigerator / freezer according to a third embodiment of the present invention.

FIG. 8 is a control flowchart showing a control device for a refrigerator / freezer according to a third embodiment of the present invention.

FIG. 9 is a cross-sectional view showing a conventional refrigerator-freezer control device.

FIG. 10 is a control time chart showing a conventional controller for a refrigerator-freezer.

FIG. 11 is a flowchart showing control of a conventional refrigerator-freezer control device.

[Explanation of symbols]

1 refrigerator body, 2 refrigerating room, 3 freezing room, 4 cooler, 5 cool air discharge air passage, 6 compressor, 7 cold air forced circulation blower, 8 defrost heater, 9 first refrigeration room electric damper for temperature control 10, 2nd temperature control electric damper for freezer, 11 Deodorizing air duct, 12 3rd temperature control electric damper for deodorizing.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F25D 21/10 F25D 21/10 A (72) Inventor Koichi Hashimoto 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Sanryu Electric Co., Ltd. F term (reference) 3L045 AA02 BA01 CA02 DA02 EA01 GA04 LA14 MA04 MA12 NA07 NA22 PA02 PA03 PA04 3L046 AA02 BA01 CA06 CA11 JA05 JA16 KA04 LA02 LA08 MA03 MA04

Claims (8)

[Claims] 1. A plurality of chambers including at least a refrigerating chamber and a freezing chamber, wherein cool air cooled by a cooler is blown to the plurality of chambers by a cool air forced circulation blower. In the cold air discharge air passage, each of the plurality of chambers is equipped with a temperature-adjusting electric damper, and when the defrosting heater is energized, the compressor is stopped before the defrosting heater is energized. The first temperature adjustment electric damper is opened, and the cool air in the cool air forced circulation fan is forced to convection to return the cool air in the refrigerating chamber, which is relatively high, into the cool air discharge air passage, thereby increasing the cooler temperature. Control device for a refrigerator-freezer. 2. The defrosting of the cooler is performed by forcibly convection the cool air in the chamber with the blower for forced circulation of the cool air to raise the cooler temperature while the defrosting heater is off. The control device for the refrigerator-freezer according to claim 1. 3. Defrosting the cooler by raising the cooler temperature by forcibly convecting the cool air in the refrigerator with the blower for forced circulation of the cool air with the second temperature control electric damper for the freezer compartment closed. The control device for the refrigerator / freezer according to claim 1 or 2, wherein 4. After the forced convection of cool air by the blower for forced circulation of cool air in the chamber to raise the cooler temperature, the defrost heater is turned on to heat the cooler to defrost the cooler. The control device for the refrigerator / freezer according to claim 1, 2 or 3. 5. A cold air forced to be cooled by a cooler in the plurality of chambers or deodorizing air passages and having a plurality of at least refrigerating and freezing compartments With a blower for circulation, in the plurality of rooms or the deodorizing air passage,
Air is blown through the cool air discharge air passage, and an electric damper for temperature adjustment is provided in the cold air discharge air passage toward the plurality of chambers or the deodorizing air passage, and a defrosting heater is provided below the cooler. , Control of a refrigerator / freezer characterized by performing defrosting of residual frost of the cooler by generating forced convection in the deodorizing air passage with a blower for cold air forced circulation after defrosting heater energization during defrosting operation apparatus. 6. A forced air convection is generated in the deodorizing air passage by a cool air forced circulation blower after the defrost heater is turned off while the first temperature adjustment electric damper for the refrigerating compartment during the defrosting operation is closed.
The control device for a refrigerator-freezer according to claim 5, wherein defrosting of residual frost of the cooler is performed. 7. Forced convection is generated in the deodorizing air passage by a cool air forced circulation blower after the defrost heater is turned off while the second temperature adjusting electric damper for the freezing compartment during the defrosting operation is closed.
The control device for a refrigerator-freezer according to claim 5 or 6, wherein defrosting of residual frost of the cooler is performed. 8. In the defrosting operation, the first temperature adjusting electric damper for the refrigerating compartment, the second temperature adjusting electric damper for the freezing compartment or the third temperature adjusting electric damper for deodorizing is closed, The controller for a refrigerator / freezer according to claim 5 or 6, wherein forced air convection is generated in the deodorizing air passage by a blower for forced circulation of cold air to perform defrosting.