JP2005156103A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of efficiently carrying out a power saving (energy saving) mode. <P>SOLUTION: The refrigerator is composed by cooling a storage chamber composed in a heat insulation box body to a set temperature, and it is composed such that the power saving mode is carried out by a power saving switch 61, a loaded condition of each storage chamber during the power saving mode is accurately grasped by a refrigeration chamber temperature sensor 55 and a freezing chamber temperature sensor 54, and the power saving mode is canceled when the loaded condition is high. By this, deterioration of food freshness retainment in each storage chamber is suppressed, and an energy saving effect by the power saving mode can be enhanced. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a refrigerator capable of efficiently performing a power saving (energy saving) mode.

  Conventionally, when this type of refrigerator enters a power saving (energy saving) mode, the set temperature of each storage room is raised, and when it is determined that one of the doors of each storage room is opened, the power saving operation is canceled. . (For example, refer to Patent Document 1).

  FIG. 3 is a front view of a conventional refrigerator described in Patent Document 1, and FIG. 4 is a block diagram of a control device of the refrigerator.

  In FIG. 3, the refrigerator 1 is partitioned from the upper part into respective storage rooms of a refrigerator compartment 2, a vegetable compartment 3, a switching room (select room) 4, an ice making room 5, and a freezing room 6. The refrigerator compartment door 7, the drawer-type vegetable compartment door 8, the switching compartment door 9, the ice making compartment door 10, and the freezer compartment door 11 are closed openably and closably.

  In FIG. 4, the control device 12 is constituted by a general-purpose microcomputer 13, which has a freezer temperature sensor 14 for detecting the temperature of the freezer compartment 6 and a refrigerator temperature sensor for detecting the temperature of the refrigerator compartment 2 as inputs. 15, a switching chamber temperature sensor 16 for detecting the temperature of the switching chamber 4, an outside air temperature sensor 17 for detecting the ambient temperature around the refrigerator 1 and an illuminance (brightness) around the refrigerator 1 An optical sensor 18, a refrigerator temperature sensor 19 for detecting the refrigerator temperature of the refrigerator 2, a refrigerator temperature sensor 20 for detecting the refrigerator temperature of the freezer 6, and a setting switch constituting temperature setting means 21, a power saving (energy saving) switch 22 for switching to a power saving (energy saving) mode, a door switch 23 for detecting the open / closed state of each door 7, 8, 9, 10, 11 are connected. The output of the microcomputer 13 is connected to a compressor 24, an opportunity room fan 25, a freezer room fan 26, and a refrigerator room fan 27 through inverter circuits 28, 29, 30, and 31, respectively. A curtain blower 32, a three-way valve (motor) 33, defrosting heaters 34 and 35, an electric heater 36 for temperature compensation, an LED display 37, an electronic sound generator 38, a motor damper 39 and an ice maker 40 are connected. .

  The operation of the above configuration will be described below.

When the energy saving switch 22 is pressed, the microcomputer 13 enters the energy saving mode and raises the set temperature of each room (freezer room 6, refrigerator room 2, etc.) by 1 ° C., for example. In this case, the microcomputer 13 expands the temperature increase range to, for example, 2 ° C. when the illuminance is low and it is determined at night based on the output of the optical sensor 18. Thereby, since the electric power required for the cooling operation is reduced, energy saving and the amount of electricity can be reduced. Further, when the load is expected to lighten at night or the like, the temperature increase range can be automatically expanded to enhance the energy saving effect. If the microcomputer 13 determines that any of the doors 7, 8, 9, and 11 has been opened and closed based on the output of the door switch 23 during execution of the energy saving mode, the microcomputer 13 cancels the energy saving mode. As a result, when the load in each room increases due to the opening and closing of the door, the power saving (energy saving) mode can be automatically canceled, and the power saving (energy saving) mode operation is facilitated.
JP 2001-99536 A

  However, in the conventional configuration, the user of the refrigerator wants to save power (energy saving), and the power saving (energy saving) switch is pressed and the energy saving mode is frequently performed by opening and closing the refrigerator door, which is frequently performed every day. Is frequently cancelled, so there is a problem that the energy saving effect is extremely small.

  This invention solves the said conventional subject, and it aims at providing the refrigerator which can perform a power-saving (energy saving) mode efficiently.

  In order to solve the above conventional problems, the refrigerator of the present invention is formed by cooling each storage room of a freezing room, a refrigerating room, and a switching room configured in a heat insulation box to respective set temperatures, When the temperature of the freezer compartment and the refrigerator compartment is detected by the freezer compartment temperature sensor and the refrigerator compartment temperature sensor, it is equipped with a controller and power saving switch that controls the operation of the refrigerator based on the set temperature, and set based on the operation of the electricity saving switch. While executing the power saving mode for increasing the temperature, the freezer temperature sensor detects that the temperature of the freezer compartment is higher than a predetermined temperature during execution of the power saving mode, or the refrigerator compartment temperature sensor detects that the temperature of the refrigerator compartment is a predetermined temperature. When it is detected that the temperature is higher than the temperature, the power saving mode is canceled.

  As a result, the load condition of each storage room is accurately grasped, and when the load condition is high, the power saving mode is canceled, thereby suppressing the deterioration of food preservation in each storage room and enhancing the energy saving effect of the power saving mode. it can.

  The refrigerator of the present invention detects that the temperature of the freezer compartment is higher than a predetermined temperature by the freezer temperature sensor during execution of the energy saving mode, or detects that the temperature of the refrigerator compartment is higher than the predetermined temperature by the refrigerator temperature sensor. In such a case, the power saving mode is canceled to accurately grasp the load state of each storage room, and when the load is high, the power saving mode is canceled to suppress deterioration of food preservation in each storage room. The energy saving effect of the power saving mode can be enhanced, and the efficiency of the power saving (energy saving) mode can be improved.

  According to the first aspect of the present invention, the storage rooms of the freezer compartment, the refrigerator compartment, and the switching compartment configured in the heat insulation box are cooled to their respective set temperatures, and the freezer compartment temperature sensor and the refrigerator compartment are provided. When a temperature sensor detects the temperature of the freezer compartment or the refrigerator compartment, it has a controller and a power saving switch that controls the operation of the cooling device based on the set temperature, and a power saving mode for increasing the set temperature based on the operation of the power saving switch. When the energy-saving mode is executed, the freezer temperature sensor detects that the freezer temperature is higher than a predetermined temperature, or the refrigerator temperature sensor detects that the refrigerator temperature is higher than a predetermined temperature. The power saving mode is canceled to accurately grasp the load condition of each storage room, and when the load condition is high, the power saving mode is canceled to reduce the food freshness in each storage room. The suppressed, it is possible to enhance the energy saving effect of the power-saving mode.

  The invention according to claim 2 is the invention according to claim 1, wherein the temperature difference between the freezer temperature detected by the freezer temperature sensor and the set temperature of the freezer, or the refrigerator compartment detected by the refrigerator temperature sensor. When the temperature difference between the temperature and the set temperature of the refrigerator compartment reaches a certain value, the number of revolutions of the compressor is increased, but during execution of the power saving mode, this constant value is increased from that during normal cooling to increase the compressor's speed. By suppressing the increase in the number of revolutions, the energy saving effect by the power saving mode can be enhanced.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, during execution of the power saving mode, the period for performing the defrosting control of the cooler in the refrigerating room is extended from that during normal cooling, so that the refrigerating room By suppressing the power consumption of the defrost heater of the cooler, the energy saving effect by the power saving mode can be enhanced.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, during the power saving mode, the cycle of performing the defrosting control of the cooler in the freezer compartment is set from that during normal cooling. By extending, the power saving effect by the power saving mode can be enhanced by suppressing the power consumption of the defrost heater of the cooler in the freezer compartment.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects of the present invention, during the power saving mode, the conduction rate of the vegetable room heater, which is a vegetable room temperature compensation heater, is normally set. By suppressing the power consumption of the vegetable room heater by suppressing about 5 to 10% from the time of cooling, the energy saving effect by the power saving mode can be enhanced.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a block diagram of a refrigerator control device according to the embodiment.

  In FIG. 1, the refrigerator 41 is partitioned from the top into storage rooms of a refrigerator room 42, a vegetable room 43, a switching room 44, an ice making room 45, and a freezer room 46, and each storage room is a revolving refrigerator door 47. And a drawer-type vegetable room door 48, a switching room door 49, an ice making room door 50, and a freezing room door 51.

  In FIG. 2, the control device 52 is configured by a microcomputer 53, and inputs are a freezer temperature sensor (FCC) 54 that detects the temperature of the freezer 46, and a refrigerator temperature sensor (FC) that detects the temperature of the refrigerator 42. PCC) 55, a switching chamber temperature sensor (SCC) 56 that detects the temperature of the switching chamber 44, an outside air temperature sensor (ATC) 57 that detects the ambient temperature around the refrigerator 41, and the cooler temperature of the refrigerator compartment 42. Refrigerating room cooler temperature sensor (DPC) 58 to detect, freezer room cooler temperature sensor (DFC) 59 to detect the cooler temperature of freezer room 6, temperature setting and setting switch 60 to set each function, power saving ( A power saving switch 61 for switching to the (energy saving) mode, a refrigerator door 47, a switching chamber door 49, a door switch 62 for detecting the open / closed state of the freezer door 51, and the like are connected. Further, a compressor 63, a machine room blower 64, and a freezer compartment blower 65 are connected to the output of the micro 53 via inverter circuits 66, 67, 68, respectively, and further, a refrigerator refrigerator 69, a three-way valve (motor) ) 70, a defrost heater 71 of a refrigerator for a refrigerator (not shown), a defrost heater 72 of a refrigerator for a freezer (not shown), a switching chamber heater 73 which is a temperature compensation heater of the switching chamber 44, a vegetable room A vegetable room heater 74 that is a heater for temperature compensation 43, a motor damper 75 that adjusts the temperature based on the set temperature of the switching room, an ice maker 76, and the like are connected.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when the power saving switch 61 is operated by pressing or the like, the normal cooling operation is shifted to the power saving mode operation, and the set temperature of the refrigerator compartment 42 and the set temperature of the freezer compartment 46 are increased by about 1 ° C. to 2 ° C., respectively. During the power saving mode operation, the refrigerator compartment door 47, the freezer compartment door 51, etc. are opened and closed several times, or relatively hot food is put into each storage compartment, and the refrigerator compartment temperature sensor 55 detects the refrigerator compartment 42 detected. When the temperature reaches a certain predetermined temperature (for example, 8 ° C. to 12 ° C.) or when the temperature of the freezer compartment 46 detected by the freezer temperature sensor 54 reaches a certain predetermined temperature (for example, −15 ° C. to −10 ° C.). The power saving mode is canceled.

  As described above, in the present embodiment, the load state of each storage room during the power saving mode is accurately grasped by the refrigerator temperature sensor 55 and the freezer temperature sensor 54, and when the load state is high, the power saving mode is set. By canceling, deterioration of food preservation in each storage room can be suppressed, and the energy saving effect by the power saving mode can be enhanced.

  In the present embodiment, the temperature difference between the freezer temperature detected by the freezer temperature sensor 54 and the set temperature of the freezer, or the temperature of the refrigerating room detected by the refrigerator temperature sensor 55 and the set temperature of the refrigerating room. When the temperature difference reaches a certain value (for example, 1K to 5K during normal cooling), the number of rotations of the compressor 63 is increased. During execution of the power saving mode, this constant value is further increased by about 1K to 3K, respectively. By enlarging, it is possible to enhance the energy saving effect by the power saving mode by suppressing an increase in the rotational speed of the compressor 63.

  In the present embodiment, during execution of the power saving mode, the defrosting control of the cooler in the refrigerator compartment 42 is extended by the defrost heater 72 from that during normal cooling, thereby defrosting the cooler in the refrigerator compartment. By suppressing the power consumption of the heater, the energy saving effect by the power saving mode can be enhanced.

  In this embodiment, during execution of the power saving mode, the defrost heater 71 defrosts the freezer compartment 42 by extending the cycle for performing the defrost control of the cooler in the freezer compartment 42 from the normal cooling time. By suppressing the power consumption of the heater, the energy saving effect by the power saving mode can be enhanced.

  In the present embodiment, during execution of the power saving mode, consumption of the vegetable room heater 74 is reduced by suppressing the energization rate of the vegetable room heater 74, which is a temperature compensation heater for the vegetable room, by about 5 to 10% from that during normal cooling. By suppressing the power, the energy saving effect by the power saving mode can be enhanced.

  As described above, since the refrigerator according to the present invention can enhance the energy saving effect by the power saving (energy saving) mode, it can be applied to uses such as an air conditioning apparatus.

Front view of the refrigerator in Embodiment 1 of the present invention Block diagram of the refrigerator control device of the embodiment Front view of a conventional refrigerator Block diagram of a conventional refrigerator control device

Explanation of symbols

41 Refrigerator 42 Refrigeration room 43 Vegetable room 44 Switching room 46 Freezer room 52 Control device 54 Temperature sensor for freezer room 55 Temperature sensor for cold room 61 Power saving switch 63 Compressor 74 Vegetable room heater

Claims (5)

Each storage room of the freezer compartment, the refrigeration compartment, and the switching compartment configured in the heat insulation box is cooled to the set temperature, and the freezer compartment temperature sensor and the refrigerator compartment temperature sensor are used to store the freezer compartment and the refrigerator compartment. When a temperature is detected, it has a control device that controls the operation of the cooling device based on each set temperature and a power saving switch. Based on the operation of the power saving switch, the power saving mode for increasing the set temperature is executed, and while the power saving mode is being executed. When the freezer temperature sensor detects that the freezer temperature is higher than a predetermined temperature, or when the freezer temperature sensor detects that the refrigerator temperature is higher than a predetermined temperature, the power saving mode is canceled. A refrigerator characterized by that. When the temperature difference between the freezer temperature detected by the freezer temperature sensor and the set temperature of the freezer, or the temperature difference between the refrigerator temperature detected by the refrigerator temperature sensor and the set temperature of the refrigerator reaches a certain value, respectively. 2. The refrigerator according to claim 1, wherein the number of rotations of the compressor is increased, and the constant value is increased from that during normal cooling during execution of the power saving mode. 3. The refrigerator according to claim 1, wherein, during execution of the power saving mode, a cycle for performing defrosting control of the cooler in the refrigerator compartment is extended from that during normal cooling. The refrigerator according to any one of claims 1 to 3, wherein a period during which the defrosting control of the cooler in the freezer compartment is performed is extended from that during normal cooling during execution of the power saving mode. 5. During the power saving mode, the energization rate of the vegetable room heater, which is a temperature compensation heater for the vegetable room, is suppressed by about 5 to 10% from that during normal cooling. The refrigerator according to one item.

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