JP6385638B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to a refrigerator.

  Conventionally, the necessity of energy saving has been recognized, and for example, a refrigerator that reduces power consumption by reducing the illuminance of illumination in the refrigerator has been developed. Many of such refrigerators do not control power consumption according to the need for power saving that changes with time. For example, functions with large power consumption, such as defrosting, do not save power every hour. This was performed when certain conditions were met regardless of necessity, for example, when cooling cycles were integrated and operated for a certain period of time.

  On the other hand, a refrigerator that has a built-in clock and has a high start-up probability of the defrosting operation when a preset time zone is reached has been invented (Patent Document 1).

  By the way, in recent years, depending on the season and time zone, such as the summer afternoon time zone, there has been a situation where the power demand can reach the supply capacity. Therefore, the power company issues a warning in advance if the power demand is expected to exceed a certain standard, and if the power usage rate for the supply capacity still does not decrease, it implements a planned power outage. A measure to avoid a planned power outage is to save electricity in each home when a warning is issued.

  In addition, each electric power company has introduced a rate plan in which the electricity charge increases during a specific time period in order to avoid an excessive increase in power demand during the specific time period. Here, the specific time zone is, for example, 3 hours from 1 pm to 4 pm. If a household has subscribed to such a price plan, if the refrigerator is not scheduled to be used during that time, it is desired that the refrigerator be operated with reduced power consumption during that time.

  Therefore, there is a demand for a refrigerator that can be operated with reduced power consumption for a certain period of time when it is necessary to save power, such as when the alarm is issued, or when a user desires to save power.

JP2007-240027

  The problem to be solved by the present invention is to provide a refrigerator that can be operated with reduced power consumption for a certain period of time when it is necessary to save electricity or when a user desires to save electricity.

The refrigerator of the embodiment includes an operation unit used for instructing control of the refrigerator, an evaporator that generates cold air, a defrosting unit that defrosts the evaporator, and a compressor that sends a refrigerant to the evaporator. A refrigerator that performs defrosting when a certain condition is satisfied, and when using the operation means to instruct to perform defrosting start postponement control that does not operate the defrosting means for a certain period of time after instructing, Even if the condition for defrosting is satisfied, the defrosting is not performed until the predetermined time elapses, and the condition for defrosting is satisfied during the defrosting start postponement control regardless of whether the condition for defrosting is satisfied. The drive frequency of the compressor is lowered than before the defrost start postponement control .

Sectional drawing of the refrigerator of embodiment Control block diagram of refrigerator of embodiment Example flow chart

1. Configuration and Basic Function of Refrigerator As shown in FIG. 1, the refrigerator according to the present embodiment includes a heat insulating box body filled with a foam heat insulating material between an outer box that forms an outer shell and an inner box that forms a storage space. The storage space is partitioned into an upper refrigerated space 21 and a lower refrigerated space 22 by a heat insulating partition wall 20. The refrigeration space 21 is a space that is cooled to a refrigeration temperature (for example, 2 to 3 ° C.), and the interior is further partitioned vertically by a partition plate 23, and a refrigeration chamber in which a plurality of mounting shelves are provided in the upper space. 2 and a vegetable compartment 3 in which a drawer-type storage container is disposed in the lower space. The freezing space 22 arranged below the vegetable room 3 is a space cooled to a freezing temperature (for example, −18 to −25 ° C.), and is illustrated with an ice making room 4 provided with a relatively small-volume automatic ice making machine. A small freezer compartment that is not attached is provided on the left and right sides as viewed from the front of the refrigerator, and a freezer compartment 5 is provided below the freezer compartment.

  Here, the freezing space 22 and the refrigerated space 21 are provided with an internal temperature sensor 28, and a control microcomputer 40 described later of the freezing space 22 and the refrigerated space 21 is based on temperature data sent from the internal temperature sensor 28. The cooling cycle and various fans described later are controlled so as to keep the temperature at an appropriate temperature.

  The opening of the refrigerator compartment 2 is closed by a refrigerator compartment door 6 pivotally supported by hinges provided above and below one side of the refrigerator body 1. Openings of the vegetable room 3, the ice making room 4, the small freezer room, and the freezer room 5 are closed by a drawer-type vegetable room door 7, an ice making room door 8, a small freezer room door, and a freezer room door 9, respectively. A storage container is held on the back side of these pull-out doors, and is configured to be pulled out of the cabinet with the opening operation. The refrigerator compartment door 6, the vegetable compartment door 7, the ice making compartment door 8, the small freezer compartment door, and the freezer compartment door 9 are provided with open sensors 24a, 24b, 24c, 24d, and 24e, respectively, for detecting that the doors have been opened. Yes.

  A machine room 30 at the lower back of the refrigerating space 22 accommodates a compressor 31, a condenser (not shown), and a radiating fan 29 for cooling the compressor 31. The freezer space evaporator chamber 32 on the back of the freezer space 22 has a freezer space evaporator 33, a freezer space circulation fan 34 that sends the cold air generated by the freezer space evaporator 33 to the freezer space, and a defrost that will be described later. A defrosting heater 38 is housed. A refrigerated space evaporator 36, a refrigerated space evaporator 36, a refrigerated space circulating fan 37 that sends chilled air generated in the refrigerated space evaporator 36 to the refrigerated space, and a defrost described later. A defrosting heater 39 for performing the above is housed.

  The condenser is connected to a throttling device (not shown), the throttling device is connected to the refrigeration space evaporator 33 and the refrigeration space evaporator 36, and the refrigeration space evaporator 33 and the refrigeration space evaporator 36 are connected to the compressor 31. To constitute a cooling cycle for generating cold air. The refrigerant that has been pressurized by the compressor 31 and becomes a high-temperature / high-pressure gas dissipates heat and liquefies at a high pressure in the condenser. When the refrigerant passes through the throttle device, the pressure is reduced, the boiling point is lowered, and the refrigerant is vaporized and absorbed by the refrigeration space evaporator 33 and the refrigeration space evaporator 36, so that the periphery of the refrigeration space evaporator 33 and the refrigeration space evaporator 36 Generate cold air.

  The refrigerator of the embodiment has a mist generating device 42. The mist generating device 42 generates a mist of charged fine particles from water in a water supply tank (not shown) provided in a section of the refrigerated space 21 and discharges it into the refrigerated space 21. The mist can provide effects such as suppression of mold in the refrigerated space 21 and deodorization. When the mist is generated, power is consumed to apply a high voltage to water.

  The refrigerator of the embodiment includes an outside air temperature sensor 27 that measures the outside air temperature outside the refrigerator. Further, a defrost timer 26 that measures the elapsed time from the time when the defrosting is completed and a cooling cycle timer 25 that measures the elapsed time from the time when the compressor 31 starts operation are provided inside the refrigerator.

  On the front surface of the refrigerator compartment door 6, there is provided an operation panel 10 provided with operation means 11 such as a defrosting start postponing button 43 and a power saving button 44 described later, and a display means 12 for displaying the operating status of the refrigerator. An operation microcomputer 41 is provided on the back side of the operation panel 10. As shown in FIG. 2, the control microcomputer 40 includes signals input from the operation microcomputer 41, the door opening sensors 24 a to 24 e, the cooling cycle timer 25, the defrost timer 26, the outside air temperature sensor 27, and the inside temperature sensor 28, Based on a control program stored in a memory (not shown), the operations of the compressor 31, the defrosting heaters 38 and 39, the circulation fans 34 and 37, the heat radiating fan 29, and the mist generator 42 are controlled. Further, the control microcomputer 40 drives the display means 12 via the operation microcomputer 41, and causes the display means 12 to display the current operating status. And the control microcomputer 40 is based on the signal sent from the internal temperature sensor 28, and the compressor 31 and the circulation fan 34 which comprise a refrigerating cycle so that the temperature of the freezing space 22 and the refrigerating space 21 may each be kept at predetermined temperature, Various fans such as 37 are controlled.

  By the way, if the cooling cycle is continuously operated for a long time, the refrigeration space evaporator 33 and the refrigerated space evaporator 36 may be frosted. Therefore, when a certain condition is satisfied, for example, when the accumulated operation time of the cooling cycle reaches a certain time, the cooling cycle is stopped, and defrosting is started by operating the defrosting means. In the defrosting of the refrigerator of the embodiment, the defrosting heaters 38 and 39 are energized to heat them, and the refrigeration space evaporator 33 and the refrigerated space evaporator 36 are heated by the heat to melt the frost. Do. At this time, in order to energize the defrosting heater, the refrigerator consumes more power than when the defrosting is not performed. After defrosting is completed, the cooling cycle is restarted. Here, since the cooling cycle during the defrosting is stopped, the temperature in the refrigerated space 21 and the freezing space 22 is increased at the end of the defrosting. Therefore, in order to lower the temperature in the refrigerated space 21 and the refrigerated space 22, the cooling cycle is operated by raising the drive frequency of the compressor 31 than before the defrosting. Then, since the temperature of the compressor 31 rises, in order to cool the compressor 31, it operates by raising the rotation speed of the radiation fan 29 from before defrosting. Further, in order to circulate the cold air generated in the refrigeration space evaporator 33 and the refrigeration space evaporator 36 to the refrigeration space 21 and the refrigeration space 22, the rotation speeds of the refrigeration space circulation fan 34 and the refrigeration space circulation fan 37 are also set. Drive up before defrosting. As a result of performing these operations, a certain amount of time is consumed after defrosting compared to before defrosting.

  Here, the manufacturer or user of the refrigerator presets the integrated operation time of the cooling cycle, which is a condition for starting defrosting. For a general household refrigerator, about 8 hours is appropriate. In addition to the case where the accumulated operating time of the cooling cycle has reached a certain time, defrosting is started when a certain time has elapsed since the previous defrosting or when the amount of frost formation exceeds a certain amount. You may do it. In any case, defrosting may be started when a condition for reducing the efficiency of the cooling cycle due to frost formation on the evaporator or a condition for generating the possibility is satisfied.

  In addition, although the refrigerator of embodiment is provided with two evaporators, the refrigerator provided with only one may be sufficient. In that case, the cold air generated by one evaporator is sent to both the freezing space 22 and the refrigerating space 21.

  The refrigerator of the embodiment can be operated in the power saving mode. The operation in the power saving mode is an operation with reduced power consumption. For example, a part of the refrigerator is turned off, the illuminance of the illumination is lowered, the driving frequency of the compressor 31 is lowered, and the circulation fan 34 for the freezing space In other words, the operation is performed by reducing the rotation speed of the refrigerating space circulation fan 37 and the heat dissipation fan 29. When a power saving button 44, which is one of the operation means 11 provided on the operation panel 10, is pressed, the signal is sent to the control microcomputer 40, and the operation in the power saving mode is started by the control microcomputer 40. During operation in the power saving mode, that effect is displayed on the operation panel 10.

2. Operation with reduced power consumption In the refrigerator of the present embodiment, defrosting start postponement control can be performed. The defrosting start postponement control is a control that does not perform defrosting for a certain period of time after instructing this control, and when the condition for defrosting is satisfied within the certain period of time, after the certain period of time has elapsed This is the control to start defrosting. The operation panel 10 is provided with a defrost start postponement button 43 as one of the operation means 11, and when pressed, an instruction to start defrost start postponement control is transmitted to the control microcomputer 40 via the operation microcomputer 41. Then, defrosting start postponing control is started. Thereby, since defrosting is not performed for a certain period of time from when power saving is required, power consumption due to operation of the defrosting function within this time can be avoided. During the defrosting start postponement control, the fact that the defrosting start postponement control is being performed is displayed on the display means 12 of the operation panel 10 so that the user can understand this.

  Here, the predetermined time may be a time determined in advance by a manufacturer of the refrigerator, or may be a time determined by a user inputting in advance on the operation panel 10. If the predetermined time is, for example, 4 hours, defrosting is not performed for 4 hours after the defrost start postponement button is pressed, and the power consumption of the refrigerator can be suppressed. For this reason, when a warning is issued, such as the possibility of a planned power outage, because the power demand is expected to exceed a certain standard, when the user who knows it presses the defrost start postponement button, Power consumption can be reduced, and it can contribute to avoiding planned power outages. In addition, if a household with a high price plan between 1pm and 4pm presses the defrost start postponement button after 12:00 when the daytime cooking has been completed, Consumption can be reduced and electricity charges can be saved. In this way, the user can save power as needed according to his / her intention.

  In addition, when the timepiece is not built in like the refrigerator of embodiment, the complexity of the design by incorporating a timepiece can be avoided.

  Here, when the condition for starting the defrosting is satisfied during the defrosting start postponement control, it is desirable that the drive frequency of the compressor 31 is lowered by the control by the control microcomputer 40. This is because when the compressor 31 is continuously driven at a normal frequency without performing the defrosting even though the conditions for starting the defrosting are complete, frosting on the evaporator may be promoted. is there. Further, a power saving effect can be obtained by lowering the driving frequency of the compressor 31.

  Moreover, when the drive frequency of the compressor 31 falls, the calorific value of the compressor 31 decreases. When the amount of heat generated by the compressor 31 is small, it is not necessary to rotate the radiating fan 29 at high speed. Therefore, when the drive frequency of the compressor 31 is lowered because the conditions for starting the defrosting are met during the defrosting start postponement control, the rotational speed of the radiating fan 29 is also automatically controlled by the control microcomputer 40. It is desirable to lower. In this way, a power saving effect can be further obtained. If the rotational speed of the heat dissipation fan 29 is lowered and the rotational speed of the refrigerating space circulation fan 34 and the refrigerating space circulation fan 37 is also lowered by the control of the control microcomputer 40, further power saving effect can be obtained.

  However, when the outside air temperature is equal to or higher than a certain temperature, if the drive frequency of the compressor 31 is lowered, the temperature rise effect due to the temperature transfer from the outside air becomes larger than the temperature drop effect due to the cold air from the cooling cycle, and the refrigerated space 21. In addition, there is a risk that the low temperature of the frozen space 22 cannot be maintained. Therefore, when the conditions for starting defrosting are complete during the defrosting avoidance control, in principle, the drive frequency of the compressor 31 is automatically lowered, and when the outside air is at a certain temperature or higher, for example, 35 degrees or higher. It is desirable that the compressor 31 is configured such that the drive frequency does not decrease. Specifically, the outside air temperature data is transmitted from the outside air temperature sensor 27 to the control microcomputer 40. When the outside air temperature is equal to or higher than a certain temperature, the control microcomputer 40 does not lower the drive frequency of the compressor 31 even if the condition for starting the defrosting is satisfied during the defrosting start delay control. The constant temperature used as the reference | standard of this function should just predetermine the manufacturer and user of a refrigerator.

  In addition, when the defrosting start delay control is started, the drive frequency of the compressor 31 and the rotation of the refrigerating space circulation fan 34 are controlled by the control microcomputer 40 regardless of whether the conditions for starting the defrosting are met. At least one of the number, the rotational speed of the refrigerating space circulation fan 37, and the rotational speed of the heat dissipation fan 29 may be decreased. As a result, a power saving effect can be obtained. However, similarly to the above, when the outside air temperature is equal to or higher than a certain temperature, if the driving frequency of the compressor 31 is lowered, the low temperature of the refrigerated space 21 and the freezing space 22 may not be maintained. It is desirable not to lower.

  Further, when the defrosting start postponement control is started, it is desirable to reduce the operating rate of the mist generating device 42 by the control by the control microcomputer 40. Specifically, for example, the mist generator 42 is operated intermittently, and the stop time of the intermittent operation is lengthened to reduce the accumulated operation time. Since mist generation is an incidental function of the refrigerator, even if the operating rate of the mist generation device 42 is lowered, no serious problem occurs in storing food. By carrying out like this, electric power consumption can be reduced during defrost start delay control.

  In addition, when the time measured by the defrost timer is a long time, that is, when a long time has passed since the last defrost was performed, the defrost start postponement button is pressed under the control of the control microcomputer 40. You may comprise so that defrost start postponement control may not be started. Here, the long time is a time predetermined by the manufacturer or user of the refrigerator, for example, 50 hours. If a long time has passed since the last defrosting, frosting may have started, and the timing to start the next defrosting may be close, so start defrosting. This is because it is desirable not to perform postponement control.

  Here, the operation in the power saving mode may be performed in parallel with the above operation. By performing the operation in the power saving mode and the defrosting start postponement control in parallel, the power consumption during the defrosting start postponement control can be significantly suppressed. In addition, when the drive frequency of the compressor 31 and the rotation speed of the refrigerating space circulation fan 34, the refrigerating space circulation fan 37, and the heat dissipation fan 29 are sufficiently reduced by the power saving mode, the defrosting start delay control is performed. Therefore, it is not necessary to further reduce these.

3. End of operation with reduced power consumption The defrosting start postponement control is automatically terminated after a predetermined time has elapsed since the operation panel 10 was instructed to perform the control. If the conditions for defrosting are satisfied during the defrosting start postponement control, defrosting is started after the defrosting start postponement control ends.

  In addition, when the driving frequency of the refrigeration space circulation fan 34, the refrigeration space circulation fan 37, and the heat dissipation fan 29 is lowered or the operation rate of the mist generating device 42 is lowered along with the start of the defrosting start delay control. Then, after the defrosting start postponement control ends, these are restored to the state before the defrosting start postponement control. However, when the drive frequency of the compressor 31 has been lowered, it is restored to the state before the defrost start postponement control after the defrost is completed. This is because if the drive frequency of the compressor 31 is restored to the state before the defrosting start postponement control before the defrosting is completed, the evaporator may be frosted. The operation in the power saving mode is preferably continued unless the user cancels the operation with the operation panel 10.

  By the way, during the defrosting start postponement control, it may be unnecessary to perform the defrosting start postponement control depending on the situation, or it may be necessary to stop the defrosting start postponement control. Therefore, it is desirable that the refrigerator of the present embodiment is configured to be able to end the defrosting start postponement control by any one or more of the following methods. And when the conditions which should implement defrost are satisfy | filled during defrost start postponement control, defrost is started after completion | finish of defrost start postponement control. Here, during the defrosting start postponement control, the drive frequency of the compressor 31, the refrigerating space circulation fan 34, the refrigerating space circulation fan 37, the number of rotations of the heat radiation fan, and the operating rate of the mist generator 42 were reduced. In this case, when the defrosting start postponement control is terminated by any one of the following methods, it is desirable to restore these to the state before the defrosting start postponement control. However, the recovery of the drive frequency of the compressor 31 is performed after the completion of the defrosting after the completion of the defrosting start postponement control. Further, it is desirable that the operation in the power saving mode is continued unless the user cancels the operation with the operation means 11.

(1) A defrosting start postponing control end button 45 is provided on the operation panel 10 as one of the operation means 11. When the defrosting start postponement control end button 45 is pressed, an instruction to end the defrosting start postponement control is transmitted from the operation microcomputer 41 that has detected it to the control microcomputer 40, and the defrosting start postponement control is terminated. As a result, it is no longer necessary to carry out the defrosting start postponement control during the defrosting start postponement control, for example, or the user has mistakenly pressed the defrosting start postponement button 43. In this case, the defrosting start postponing control can be ended by the user's intention.

(2) When one of the refrigerator compartment door 6, the vegetable compartment door 7, the ice making compartment door 8, the small freezer compartment door, and the freezer compartment door 9 is opened, one of the corresponding sensors among the open sensors 24a to 24e is the door. Detect that has opened. The signal is transmitted to the control microcomputer 40, and the defrosting start postponing control ends. When the door of the refrigerator is opened during the defrosting start postponement control, the warm air containing moisture rather than the air in the refrigerator passes through the freezing space 22 and the refrigerating space 21 and the refrigerating space evaporator chamber 32 and the refrigerating space evaporator. Since it enters the chamber 35, the refrigeration space evaporator 33 and the refrigerated space evaporator 36 are likely to be frosted. However, by ending the defrosting start postponing control, frost formation can be prevented, or defrosting can be performed immediately after frost formation. Since the possibility of frost formation is not high just by opening the door once, the defrosting start postponing control may be automatically terminated when the door is opened a predetermined number of times. The predetermined number of times is the number of times that the possibility of frost formation increases when the door is opened that many times, the number of times frost formation proceeds, and the like, which is set in advance by the refrigerator manufacturer or user. .

(3) When the outside air temperature detected by the outside air temperature sensor 27 during the defrosting start postponement control becomes equal to or higher than a predetermined temperature, the information is transmitted to the control microcomputer 40, and the control microcomputer 40 performs the defrosting start postponement control. Exit. When the outside air temperature is high, the temperature in the refrigerator easily rises, so the cooling cycle operates at a high operating rate. As a result, the evaporator may be frosted. Therefore, when the outside air temperature is equal to or higher than a predetermined temperature, frost formation is prevented by ending the defrosting start postponing control.

(4) The internal temperature sensor 28 and the cooling cycle timer 25 are connected to the control microcomputer 40 and transmit information to the control microcomputer 40. When the compressor 31 starts operating in order to generate cold air during the defrosting start postponement control, the cooling cycle timer 25 starts measuring the time from the start of operation. When the temperature in the refrigerated space 22 or the refrigerated space 21 does not drop to a predetermined temperature within a certain time after the operation of the compressor 31 is started, the control microcomputer 40 ends the defrosting start postponing control. For example, if the temperature of the refrigerated space does not drop to 3 ° C. and the temperature of the refrigerated space does not drop to −20 ° C. within 60 minutes after the start of operation of the compressor 31, the defrosting start postponing control is terminated. Thus, when the temperature in the refrigerator does not decrease, the evaporator may be frosted and the efficiency of the cooling cycle may be deteriorated, and it is desirable to perform defrosting.

(5) When the temperature detected by the internal temperature sensor of the refrigerated space 22 or the refrigerated space 21 becomes high during execution of the defrost start postponement control, the control microcomputer ends the defrost start postponement control. Here, the high temperature means a temperature that is relatively high with respect to the set temperature of the freezing space or the refrigerated space, and is determined in advance by the manufacturer or user of the refrigerator. In such a case, it is necessary to operate the cooling cycle at a high operation rate, and accordingly, the evaporator may be frosted. Moreover, it is because it is desirable that frost formation may be the cause of insufficient cooling, and in that case defrosting is implemented.

4). Modification Example In the above refrigerator, the embodiment shown in the flowchart of FIG. 3 may be adopted. The operation panel 10 of the refrigerator of this embodiment is provided with two buttons, a day button and a night button, as defrosting start postponement buttons. If it is desired to perform defrosting start postponement control during normal operation (S2), the day button is pressed during the day time, and the night button is pressed during the night time (S3). . When the day button is pressed, the defrost start extension control is executed (S4), and the defrost start extension control ends after 12 hours from the start of the defrost start extension control (S5, 6). Thereby, defrosting start extension control is generally performed during the daytime when power demand is high, and power consumption can be suppressed. On the other hand, when the night button is pressed and 8 hours or more have not elapsed since the previous defrosting (No in S9), the defrosting start extension control is executed (S10), and the defrosting start extension control is performed. The defrosting start extension control ends after 24 hours from the start (S11, 6). Thereby, the defrosting start extension control is executed not only at night but also in the daytime of the next day, and power consumption can be suppressed. In addition, when the night button is pressed and 8 hours or more have passed since the previous defrosting (Yes in S9), the timing of the next defrosting is considered to be close, so the defrosting start postponement Do not control. When the defrosting start extension control is performed and the conditions for starting the defrosting are satisfied during the defrosting start extension control (Yes in S7), the defrosting start extension control is finished, and then the removal is performed. Frost is implemented (S8).

  In the operation panel 10 of the above embodiment, buttons named 12 hours postponed button, 24 hours postponed button, etc. may be provided instead of the day button or night button. Moreover, the time to postpone the start of defrosting is not limited to 12 hours or 24 hours, and the manufacturer or user of the refrigerator may set an appropriate time. Moreover, the time to postpone the start of defrosting is not limited to two types of 12 hours and 24 hours as in the above-described embodiment, but three or more types may be determined and buttons for each time may be provided. The elapsed time after the last defrost, which is a criterion for determining whether or not to perform defrosting start delay control when the night button is pressed, is not limited to 8 hours as in the above embodiment. The user may set an appropriate time.

  The above embodiment is an illustration and the scope of the invention is not limited to this. The above embodiments can be implemented in various other forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. The above embodiments and modifications thereof are included in the inventions described in the claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body, 2 ... Cold room, 3 ... Vegetable room, 4 ... Ice making room, 5 ... Freezer room, 6 ... Cold room door, 7 ... Vegetable room door , 8 ... Ice making room door, 9 ... Freezing room door, 10 ... Operation panel, 11 ... Operation means, 12 ... Display means, 20 ... Thermal insulation partition wall, 21 ... Refrigerated space, 22 ... Freezing space, 23 ... Partition plate, 24 ... Opening sensor, 25 ... Cooling cycle timer, 26 ... Defrost timer, 27 ... Outside air temperature sensor, 28・ ・ ・ Cooling temperature sensor, 29 ・ ・ ・ Heat radiating fan, 30 ・ ・ ・ Machine room, 31 ・ ・ ・ Compressor, 32 ・ ・ ・ Evaporator room for refrigeration space, 33 ・ ・ ・ Evaporator for refrigeration space, 34 ... Refrigeration space circulation fan, 35 ... Refrigeration space evaporator chamber, 36 ... Refrigeration space evaporator, 37 ... Refrigeration space circulation fan, 38 Defroster heater, 39 ... Defroster heater, 40 ... Control microcomputer, 41 ... Operation microcomputer, 42 ... Mist generator, 43 ... Defrost start postponement button, 44 ... -Power saving button, 45 ... Defrost start postponement control end button

Claims (13)

Control means for controlling the refrigerator, operating means for giving instructions to the control means, an evaporator for generating cold air, a defrosting means for defrosting the evaporator, and a compressor for sending refrigerant to the evaporator A defroster that performs defrosting when a certain condition is satisfied, wherein the control means receives an instruction to perform defrosting start postponement control from the operation means, and receives a predetermined time after receiving the instruction among the stomach line defrosting start postponed control is not performed defrosting to be filled condition to perform defrosting elapsed the predetermined time, wherein the defrosting start postponed control satisfy the condition to be defrosted Regardless of whether or not it has been done, the drive frequency of the compressor is lowered than before the defrost start postponement control . A radiator fan for cooling the pre-Symbol compressors, the cold air generated by the evaporator to a refrigerator comprising a circulation fan for circulating in the refrigerator, the control means performs the defrosting start postponed control from the operating unit to instruct the predetermined time after receiving a refrigerator according to claim 1, characterized in that lowering at least one of a rotational speed of the rotational speed and the circulation fan before Symbol cooling fan. An outside air temperature sensor for measuring an outside air temperature is provided, and the control means receives an instruction to perform the defrosting start postponement control from the operation means, and the outside air temperature measured by the outside air temperature sensor is higher than a certain temperature. Refrigerator according to claim 1 or 2, characterized in that without lowering the driving frequency of the compressor case. A mist generating device for generating charged mist in the refrigerator, and when the control means receives an instruction to perform the defrosting start postponement control from the operating means, the mist generating device for a predetermined time after receiving the instruction The refrigerator of any one of Claims 1-3 characterized by weakening driving | operation of. The refrigerator according to any one of claims 1 to 4 , wherein the control means performs an operation in a power saving mode with reduced power consumption in response to an instruction from the operation means. The refrigerator according to any one of claims 1 to 5 , further comprising display means for displaying control of the refrigerator, wherein the display means displays the defrost start delay control. During the implementation of the defrosting start postponed control, either from the operation means receives an instruction to end the defrosting start postponed control, according to claim 1-6, characterized by terminating the defrosting start postponed Control The refrigerator of item 1. The refrigerator according to any one of claims 1 to 7 , wherein when the door of the refrigerator is opened during the execution of the defrosting start postponement control, the defrosting start postponement control is terminated. The refrigerator according to any one of claims 1 to 8 , wherein when the door of the refrigerator is opened a predetermined number of times during the execution of the defrosting start postponement control, the defrosting start postponement control is terminated. An outside air temperature sensor for measuring outside air temperature is provided, and when the outside air temperature measured by the outside air temperature sensor exceeds a certain temperature during the execution of the defrosting start delay control, the defrost start delay control is terminated. Refrigerator according to any one of claim 1 to 9, characterized. An internal temperature sensor for measuring the temperature in the refrigerator, and a timer for measuring the time after the start of operation of the compressor after the start of the defrost start postponement control, the time measured by the timer is predetermined. when was the time, when the temperature where the in-compartment temperature sensor measures has not dropped to a predetermined temperature, any one of the claims 1-10, characterized by terminating the defrosting start postponed control 1 refrigerator. An internal temperature sensor for measuring the temperature in the refrigerator is provided, and when the temperature in the refrigerator measured by the internal temperature sensor is equal to or higher than a predetermined temperature during the execution of the defrosting start delay control, the defrosting starts. The refrigerator according to any one of claims 1 to 11 , wherein the postponement control is terminated. The said control means does not perform the said defrost start postponement control, if the instruction | indication which should perform the said defrost start postponement control is carried out after progress for the predetermined time after completion of the last defrost. any one refrigerator of 1-12.

Images