JP2011058752A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator capable of informing a user to quickly close a door in the case of a heavy load by changing the time from when the door is opened to when informing the user in response to a condition of a load of a refrigerator. <P>SOLUTION: This refrigerator includes: a plurality of chambers 101-105 to be cooled by a refrigeration cycle including a compressor 4; doors 111-114 respectively provided in the plurality of chambers; door sensors 8a-8e detecting opening/closing of each door; informing means 9, 10 and 15a informing opening of the doors; and a control means 21 receiving a detection signal from the door sensors, and operating and controlling the informing means to inform opening of the door. A load malfunction giving means is provided to separate a load to be given to the refrigerator into a plurality of stages from a light stage to a heavy stage and to give it to the refrigerator. When a load to be given by the load malfunction giving means is heavy, the control means controls the time from when a signal, which detects opening of the door, from the door sensor is received to when operating the informing means so as to be shorter than that of a case wherein a load is light in response to a degree of load. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator, and more particularly, to an alarm device that notifies that a door is opened too much by a warning sound / voice or display when the door is open for a long time.

  Conventional refrigerators are equipped with door opening detection means that detects the opening and closing of the door, and when the door opens for a certain period of time after the door opening detection means detects the opening of the door, it is used as an alarm sound or display The user is warned that the door is open (see, for example, Patent Document 1).

JP 60-42577 A (2nd page, figure)

  However, the conventional refrigerator can only inform the user that the door is open when the door has been opened for a certain period of time, regardless of whether the refrigerator is heavy or light. When the opening time is constant, when the load on the refrigerator is heavy, the cooling performance is adversely affected than when the load is light, but there is a problem that it is difficult to make a notification so as to avoid this.

  The present invention has been made to solve such a problem, and according to the load condition of the refrigerator, the time from opening the door to notification is variable, and when the load is heavy, the user can close the door quickly. The aim is to get a refrigerator that can be prompted.

  The refrigerator according to the present invention reports a plurality of rooms to be cooled by a refrigeration cycle including a compressor, doors provided in the plurality of rooms, door sensors for detecting opening and closing of the doors, and door opening. In a refrigerator provided with a notification means and a control means for receiving a detection signal from the door sensor and controlling the notification means to operate to notify the opening of the door, the load applied to the refrigerator is divided into a plurality of stages from light to heavy. Load control means for giving the load, and when the load given by the load change giving means is heavy, the control means takes a time from when the door sensor door detection signal is received until the notification means is operated. The load is shortened according to the load weight than when the load is light.

  The present invention includes a plurality of rooms cooled by a refrigeration cycle including a compressor, doors provided in each of the plurality of rooms, a door sensor that detects opening and closing of each door, and an informing means for informing the opening of the door. And a control means for controlling to notify the opening of the door by operating the notification means in response to the detection signal of the door sensor, wherein the control means receives the detection signal of the door of the door sensor being opened. When the load given by the load fluctuation applying means giving the load given to the refrigerator in a plurality of stages from light to heavy is long depending on the lightness of the load than when the load is light Because it is shortened, the time from opening the door to notification by the notification means can be changed depending on the operating condition of the refrigerator. When the load applied to the refrigerator is heavy, By shortening the time from when the door is opened to notification to when the user is light, the user can be encouraged to close the door sooner, and by closing the door earlier, the power consumption can be reduced. There is an effect that can be.

The front view of the refrigerator which concerns on embodiment of this invention. The sectional side view of the refrigerator. The front view of the operation panel of the refrigerator. The block diagram of the control apparatus of the refrigerator. The flowchart which shows the operation | movement at the time of the door opening of the refrigerator. The flowchart of the comprehensive load determination of the various loads of the refrigerator. The flowchart of the load determination of the 1st combination of the various loads of the refrigerator. The flowchart of the load determination of the 2nd combination of the various loads of the refrigerator. The flowchart which shows the calculation method of the load level A by the preset temperature of the refrigerator. The flowchart of the calculation method of the load level B by the frequency | count of opening and closing of the door of the refrigerator. The flowchart of the calculation method of the load level B by the open time of the door of the refrigerator. The flowchart of the calculation method of the load level B by the frequency | count of opening and closing of the door of the refrigerator, and opening time. The flowchart of the calculation method of the load level C by the rotation speed of the compressor of the refrigerator. The flowchart of the calculation method of the load level C by the operation time of the compressor of the refrigerator. The flowchart of the calculation method of the load level C by the rotation speed and operating time of the compressor of the refrigerator. The flowchart of the calculation method of the load level D by the external temperature of the refrigerator. The flowchart of the calculation method of the load level D by the two-step outside temperature of the refrigerator. The flowchart of the calculation method of the load level E by the rapid cooling implementation of the refrigerator. The flowchart of the calculation method of the load level F by defrosting implementation of the refrigerator.

Embodiment.
1 is a front view of a refrigerator according to an embodiment of the present invention, FIG. 2 is a side sectional view of the refrigerator, FIG. 3 is a front view of an operation panel of the refrigerator, and FIG. 4 is a block diagram of a control device of the refrigerator. is there.
As shown in FIGS. 1 and 2, the refrigerator 100 includes a refrigerator compartment 101 at the top, and the refrigerator compartment 101 has a door 111. Under the refrigerating chamber 101, an ice making chamber 102 is provided on the left side and a switching chamber 105 is provided on the right side. The ice making chamber 102 has a door 112, and the switching chamber 105 has a door (not shown). Yes.
A vegetable room 103 is provided below the ice making room 102 and the switching room 105, and the vegetable room 103 has a door 113. A freezer compartment 104 is provided under the vegetable compartment 103, and the freezer compartment 104 has a door 114.

In the refrigerator compartment 101 to the freezer compartment 104, door sensors 7a to 7e for detecting opening and closing of the doors 111 to 114 are provided. When the refrigerator compartment 101 is opened, an interior lamp (not shown) in the refrigerator compartment 101 is turned on. Moreover, temperature sensors 8a-8e are provided in the refrigerator compartment 101-freezer compartment 104, respectively.
Furthermore, as shown in FIG. 2, a control device 2, a fan 5, a cooler 3, and a compressor 4 are provided on the back side of the refrigerator 101.
Cold air generated by the refrigeration cycle including the cooler 3 and the compressor 4 is circulated through the air path in the refrigerator by the fan 5, and the temperature sensors 8 a to 8 e provided in the refrigerator compartment 101 to the freezer compartment 104, respectively. The temperature is detected, and the control device 2 opens and closes on-off valves (not shown) attached to the air passages of the chambers so that the temperature is set based on the temperatures detected by the temperature sensors 8a to 8e. Control of ON / OFF of the fan 5 and the compressor 4 is performed.

  As shown in FIG. 3, the operation panel 1 provided in the refrigerator compartment door 111 changes a room selection switch 11 for selecting a room to be operated and a set temperature of the room selected by the room selection switch 11. A temperature setting switch 12, a rapid cooling switch 13 for rapidly cooling the selected room, an ice making changeover switch 14 for switching the ice making state, a display unit 15 for displaying a result of the user's selection of these switches 11 to 14, and an outside air temperature Is provided with an outside air temperature sensor (not shown). Furthermore, since the door is open, the display unit 15 of the operation panel 1 is provided with a door opening display unit 15a that performs liquid crystal display of characters for closing the door.

As illustrated in FIG. 4, the control device 2 includes a microcontroller 21 that controls the refrigerator. The microcontroller 21 is connected to a storage means 22 for storing various setting states and operating states, and further connected to door sensors 7a to 7e and temperature sensors 8a to 8e, as well as an operation panel 1, a compressor. 4, a fan 5, an audio means 9 for notifying that the door is open by voice, and an alarm sound means 10 for notifying that the door is open by an alarm sound are connected.
Further, the microcontroller 21 includes a door opening time timer 23 that counts the opening time of the refrigerator 100, an operation time timer 24 that counts the operation time of the compressor 4, and a count that counts the number of times the door is opened. The means 25 and the rotation speed detection means 26 for detecting the rotation speed of the compressor 4 are connected.

Next, the operation of the refrigerator according to the embodiment of the present invention when the door is opened for a long time will be described based on the flowchart of FIG.
First, in step S1, the microcontroller 21 determines whether the door is open from the detection signals of the door sensors 7a to 7e. Here, the door is open means that any one of the doors 111 to 114 of the refrigerator compartment 101 to the freezer compartment 104 is open.
Next, when the door is open, the door open time timer 23 counts up the time during which the door is open (step S2).

  When the microcontroller 21 determines whether the door opening time counted by the door opening time timer 23 has elapsed a predetermined time T seconds (step S3), and the predetermined time T seconds has not elapsed Returns to step S1. If the predetermined time T seconds has elapsed, the process proceeds to step S4, where the microcontroller 21 operates the sound means 9 to generate a sound indicating that the door is open, and the alarm sound means 10 is operated. An alarm sound indicating that the door is open is generated, and the door open display portion 15a is displayed to indicate that the door is closed because the door is open (step S4).

As described above, after the alarm sound / sound or display is generated, the timer is reset once (step S5), and when the door continues to open by returning to step S1 again, the alarm sound / Generate sound and display. If the door is closed on the way, the timer is reset (step S6), and the process when the door is open is terminated.
In the flowchart of FIG. 5, the user is informed that the door is open by the generation of an alarm sound / sound or a display. However, any one of these notifications may be used. Alternatively, the notification may be made by lighting or blinking the display of an image or the like.

Next, a method of determining time: T seconds until alarm sound / voice and display are generated will be described based on the flowchart of FIG.
First, in step S11, the load level A is calculated from the set temperature of each room set by the user on the operation panel 1.
Next, the load level B is calculated by opening and closing the door (step S12). Subsequently, the load level C (step S13) depending on the operating state of the compressor, the load level D due to the outside air temperature (step S14), the load level E due to execution / non-execution of rapid cooling (step S15), the load level due to execution / non-execution of defrosting F (step S16) is calculated.
After calculating the load level due to each factor, the total of the load levels A to F is set as the load level α of the refrigerator 100 (step S17).

When the load level α of the refrigerator 100 is less than a predetermined value (for example, −3) (step S18), it is determined that the load is “minimum”, and T = 90 seconds (step S19). If the load level α is −3 or more, it is determined whether it is smaller than the next predetermined value (for example, 0) (step S20). If it is less than 0, it is determined that the load is “low” and T is 90 seconds or more. A short time (for example, 60 seconds) is set (step S21).
If it is 0 or more, it is determined whether it is smaller than the next predetermined value (for example, 3) (step S22). If it is less than 3, it is determined that the load is “medium”, and T is shorter than 60 seconds (for example, 40). Seconds) (step S23). If it is 3 or more, it is determined that the load is “large”, and T is set to a time shorter than 40 seconds (for example, 20 seconds) (step S24).

In FIG. 5, all the six factors of the load levels A to F are used as determination materials for the load level α of the refrigerator. However, the present invention is not limited to this, and for example, as shown in FIG. You may calculate the load level (alpha) of the refrigerator 100 from the specific factor of the load level B by a door.
In this case, the sum of the load levels A and B is taken as the load level α of the refrigerator 100 from Steps S11 and S12 (Step 17), and thereafter, Steps S18 to S26 are reached.
That is, when the load level α of the refrigerator 100 is less than a predetermined value (for example, −3) (step S18), it is determined that the load is “minimum”, and T = 120 seconds (step S19). If the load level α is −3 or more, it is determined whether it is smaller than the next predetermined value (for example, 0) (step S20). If it is less than 0, it is determined that the load is “low”, and T is 120 seconds or more. A short time (for example, 90 seconds) is set (step S21).

If it is 0 or more, it is determined whether it is smaller than the next predetermined value (for example, 3) (step S22). If it is less than 3, it is determined that the load is “medium”, and T is shorter than 90 seconds (for example, 60). Seconds) (step S23). If it is 3 or more, it is determined whether it is smaller than the next predetermined value (for example, 6) (step S24). If it is less than 6, it is determined that the load is “large”, and T is shorter than 60 seconds (for example, 40 seconds). (Step S25). In the case of 6 or more, it is determined that the load is “large”, and T is set to a time shorter than 40 seconds (for example, 20 seconds) (step S26).
In FIG. 7, the load level determination stage is distinguished into four stages. However, the present invention is not limited to this and may be distinguished at any stage.

In FIG. 6, the calculation is performed in the order of the load levels A, B, C, D, and E. However, the calculation is not limited to this, and the calculation order of the load level due to each factor may be an arbitrary order. As shown in FIG. 8, for example, the load level α of the refrigerator 100 may be calculated from specific factors of the load level D due to the outside air temperature, the load level E due to the rapid cooling, and the load level B due to the door.
In this case, the sum of the load levels D, E, and B is set to the load level α of the refrigerator 100 from Steps S11, S12, and S17 (Step S17), and thereafter, Steps S18 to S24 are performed as in FIG.

  In order to clearly notify the influence on the cooling of the refrigerator, it is still more effective to change the alarm sound pattern and tone according to the determined load level. Changing the content or pattern is still effective.

Next, a method for calculating the load level due to each factor will be described.
First, the details of step S11, which is the calculation of the load level based on the set temperature of each room, will be described based on the flowchart of FIG.
The set temperature of the refrigerator compartment 101 can be selected in several steps (for example, three steps) from weak (high temperature) to strong (low temperature), and whether the set temperature selected by the user is lower than the middle (middle setting). Is determined by the microcontroller 21 (step S11-1). If it is low, the refrigerator compartment must be cooled to a lower temperature, so the load level A is incremented by 1 (step S11-2). If not, it is determined whether or not the selected set temperature is higher than medium (step S11-3). If it is high, the refrigerator compartment need not be cooled much, so the load level A is decremented by 1 (step S11-4). If it is not high, the medium is selected, so the load level is left as it is.

  Next, the determination by the setting of the switching chamber 105 is performed. The switching chamber 105 has a “freezing” setting of about −18 ° C., a “soft freezing” setting of about −7 ° C., a “chilled” setting of about −1 ° C., and a “refrigeration” setting of about 3 ° C. It is possible to switch to several stages (for example, four stages), and determine whether the setting of the switching chamber 105 selected by the user is lower than “soft freezing” (step S11-5). If it is low (in the case of “freezing”), the switching chamber 105 must be cooled to a lower temperature, so the load level A is incremented by 1 (step S11-6). If not, it is determined whether the selected setting is higher than “soft freezing” (step S11-7). If it is higher, the load level A is decremented by -1 (step S11-8) because the cooling of the switching chamber 105 does not take much load. If it is not high, “soft refrigeration” is selected, and the load level is left as it is. Although “soft refrigeration” is used as a reference in FIG. 9, the present invention is not limited to this, and another set temperature may be used as a reference.

Next, the set temperatures of the vegetable compartment 103 and the freezer compartment 104 are determined. Since the determination of the vegetable compartment 103 and the freezer compartment 104 is the same as the determination of the set temperature of the refrigerator compartment 101, steps S11-9 to S11- 16 is clearly shown in FIG.
The total load level calculated based on the set temperature of each room is defined as a load level A based on the set temperature. For example, when the cold room “weak”, the switching room “refrigerated”, the vegetable room “strong”, and the freezer room “medium” are set, the load level A according to the set temperature is −1 (= −1−1 + 1 + 0).

In FIG. 9, the set temperature conditions of all the rooms are used as determination materials for the load level A based on the set temperature. However, the present invention is not limited to this, and only set temperature conditions of specific rooms such as the refrigerator room 101 and the freezer room 104 are used. It is good also as a judgment material.
Moreover, although the load level A is set to ± 1 with respect to the set temperature of any room, the present invention is not limited to this. For example, when the set temperature of the refrigerator compartment 100 is changed, ± 2 and when the set temperature of the freezer compartment 104 is changed. The load level may be weighted for each room, such as ± 3.

Next, the calculation method of the load level B by a door is demonstrated based on the flowchart of FIG.
First, if calculation of the load level B by a door is started, it will be determined by the microcontroller 21 whether defrosting was started (step S12-1). When defrosting is started, the door opening / closing frequency is reset to 0 (step 12-2). When defrosting is not started, the process proceeds to the next step. Defrosting is performed about once a day, and by counting the number of times the door is opened and closed from the start of defrosting to the start of the next defrosting, it is possible to count the number of times the door is opened and closed for about one day.

  In the next step, the microcontroller 21 determines whether or not the door opening / closing frequency has exceeded a predetermined number (for example, 20 times) from the number of times counted by the counting means 25 (step S12-3). If it has exceeded, it is determined that the load caused by opening and closing the door is large, and the load level B by the door is incremented by one. When it does not exceed, the load level determination by the door is finished as it is.

In FIG. 10, the load level B is determined based on the number of times the door is opened and closed. However, the determination is not limited thereto, and the determination may be performed based on the door opening time as illustrated in the flowchart of FIG. 11.
First, if calculation of the load level B by a door is started, it will be determined whether defrosting was started (step S12-1). When defrosting is started, it is determined whether or not the opening time of one door exceeds a predetermined time (for example, 20 seconds) (steps S12-5, 6). Is incremented by 1 (step S12-7).

  In FIG. 11, the determination is made based on the opening time of one door. For example, the cumulative door opening time from the start of defrosting to the start of the next defrosting is counted, and the cumulative door opening time is a predetermined time (for example, If it exceeds 20 minutes), the load level B by the door may be incremented by one. Further, as shown in the flowchart of FIG. 12, both the door opening time and the number of times of opening and closing may be used as the determination material for the load level B. In this case, steps S12-1, S12-2, S12-5, S12-3, S12-4, S12-6, and S12-7 are clearly shown in FIG.

Next, a calculation method of the load level C by the compressor 4 will be described based on the flowchart of FIG.
First, the microcontroller 21 determines whether or not the compressor 4 exceeds a predetermined rotational speed (for example, 70 rps) based on the detection signal of the rotational speed detection means 26 for the rotational speed of the compressor 4 (step S13-1). ). If it exceeds 70 rps, it is operating at high speed, so it is determined that the load is large, and the load level C by the compressor 4 is incremented by 1 (step S13-2). If it does not exceed 70 rps, the calculation of the load level C of the compressor 4 is terminated as it is.

  In the flowchart of FIG. 13, the load level C is determined based on the rotation speed of the compressor 4, but not limited thereto, as shown in the flowchart of FIG. The load level C may be determined. The microcontroller 21 determines whether or not the continuous operation time of the compressor 4 counted by the operation time timer 24 has exceeded a predetermined time (for example, 3 hours) (step S13-3). 4 is incremented by 1 (step S13-4). If not, it is determined that the load is small, and the calculation of the load level C of the compressor 4 is terminated as it is. Further, as shown in FIG. 15, both the rotational speed of the compressor 4 and the continuous operation time may be used as the determination material for the load level C. In this case, steps S13-1 to S13-4 are clearly shown in FIG.

Next, a method for calculating the load level D based on the outside air temperature will be described based on the flowchart of FIG.
First, the microcontroller 21 determines whether or not the outside temperature detected by the outside temperature sensor (not shown) exceeds a predetermined temperature (for example, 30 ° C.) (step S14-1). If it has exceeded, it is determined that the load due to the outside air is large, and the load D due to the outside air is set to +1 (step S14-2). If not, it is determined that the load due to the outside air is small, and the calculation of the load level D based on the outside air temperature is terminated as it is.

  In the flowchart of FIG. 16, only one outside air temperature determination value is provided. However, the present invention is not limited to this. As shown in the flowchart in FIG. 17, two outside air temperature determination values (or two or more) are provided. Also good. First, it is determined whether or not the outside air temperature exceeds 15 ° C. (step S14-3), and when it exceeds 15 ° C., the load level D due to the outside air temperature is incremented by 1 (step S14-4). If the temperature does not exceed 15 ° C., the calculation of the load level D based on the outside air temperature is finished as it is. If it exceeds 15 ° C, it is next determined whether or not the outside air temperature exceeds 30 ° C (step S14-5). If it exceeds 30 ° C, the load level D due to the outside air temperature is further incremented by +1. (Step S14-6).

Next, a method for calculating the load level E by the rapid cooling will be described based on the flowchart of FIG.
First, it is determined whether or not the refrigerator 21 is rapidly cooled by the microcontroller 21 (step S15-1). This is determined by whether the room selection switch 11 selects the refrigerator compartment 101 and the rapid cooling switch 13 selects rapid cooling.
If rapid cooling is being performed, the load level E is incremented by 1 (step S15-2). Next, it is determined whether or not the ice making room 102, the switching room 105, the vegetable room 103, and the freezing room 104 are rapidly cooled, and if so, the load level E is set for each room. +1 (steps S15-3 to S15-11).
The total load level calculated from the rapid cooling implementation status of each room is defined as a load level E due to rapid cooling. For example, when the refrigerator room 101, the switching room 105, and the vegetable room 103 are rapidly cooled, the load level E due to the rapid cooling is 3 (= 1 + 1 + 1) (S15-12).

  In the flowchart of FIG. 18, the rapid cooling state of all the rooms is used as a material for determining the load level E by rapid cooling. However, the present invention is not limited to this, and only the rapid cooling state of a specific room such as the refrigerator room 101 and the freezer room 104 is used. It is good also as a judgment material. In addition, the load level E is incremented by +1 regardless of which room is rapidly cooled. For example, +2 is obtained when the refrigerator compartment 101 is rapidly cooled, and +3 when the refrigerator room 104 is rapidly cooled. The load level may be weighted for each room.

Next, the calculation method of the load level F by defrosting implementation is demonstrated based on the flowchart of FIG.
First, it is determined by the microcontroller 21 whether or not defrosting is being performed (step S16-1). When defrosting is performed, the load level F by defrosting is incremented by 1 (step S16-2). When defrosting is not performed, it is determined that the load is small, and the calculation of the load level F by performing defrosting is terminated.

  As described above, in the present embodiment, the refrigerator temperature is comprehensively determined by the set temperature of each room, the open / closed state of the door, the operating state of the compressor 4, the outside air temperature, the rapid cooling is performed / not performed, and the defrosting is performed / not performed. By determining the load level and changing the time T from when the door is opened until the alarm sound / voice or display is generated according to the load, the door is faster when the load is heavy than when the load is light. Can be prompted to close. Moreover, power consumption can be reduced by closing a door early.

  1 operation panel, 2 control device, 3 cooler, 4 compressor, 5 fan, 6 ice machine, 7a-7e door sensor, 8a-8e temperature sensor, 9 sound means, 10 alarm sound means, 11 room selection switch, 12 Temperature setting switch, 13 Rapid cooling switch, 14 Ice making changeover switch, 15 Display section, 15a Door opening display section, 21 Microcontroller, 22 Storage means, 23 Door opening time timer, 24 Compressor operating time timer, 25 Door counting means , 100 Refrigerator, 101 Refrigeration room, 102 Ice making room, 103 Vegetable room, 104 Freezing room, 105 Switching room, 111 Refrigeration room door, 112 Ice making room door, 113 Vegetable room door, 114 Freezing room door.

Claims (5)

A plurality of rooms cooled by a refrigeration cycle including a compressor, doors provided in each of the plurality of rooms, a door sensor for detecting the opening and closing of each door, an informing means for informing the opening of the door, and a door sensor In a refrigerator comprising control means for receiving a detection signal and operating the notifying means to notify the opening of the door,
Load fluctuation giving means that gives the load given to the refrigerator in multiple stages from light to heavy,
When the load given by the load variation applying means is heavy, the control means makes the load lighter than when the load is light when the door sensor door opening detection signal is received and the notification means is operated. A refrigerator characterized by being shortened accordingly.   The refrigerator according to claim 1, wherein the notification means is at least one of a sound means, an alarm sound means, and a door opening display means.   The load fluctuation applying means receives temperature detection means for setting a set temperature of each room in a plurality of stages from weak to strong, rapid cooling setting means for setting each room to heavy quenching with heavy load, and a detection signal of the door sensor. The door opening number determination means for determining that the door opening number counted by the counting means has reached a predetermined number of times, the door opening time counted by the door opening time timer in response to the detection signal of the door sensor is a predetermined opening time Door opening time determining means for determining that the rotation speed has been exceeded, rotation speed determination means for determining that the rotation speed detected by the rotation speed detection means for detecting the rotation speed of the compressor has exceeded a predetermined rotation speed, and the compression Operating time determination means for determining that the compressor operating time counted by the operating time timer exceeds a predetermined operating time, and the temperature detected by the outside air temperature sensor is the predetermined temperature. Outside air temperature determination means for determining that exceeded is either defrost setting means to perform defrosting operation in the refrigerator, the refrigerator according to claim 1 or 2, wherein severity of each load are different from each other.   Temperature setting means for setting the temperature of each room in a plurality of stages from weak to strong, rapid cooling setting means for setting each room to rapid cooling with heavy load, and a door counted by the counting means in response to a detection signal of the door sensor Door opening number determination means for determining that the number of times of opening has reached a predetermined number of times, determining that the door opening time counted by the door opening time timer in response to the detection signal of the door sensor has exceeded a predetermined opening time 4. The refrigerator according to claim 3, wherein any one of the door opening time determination means has different load weights for each room.   The weight of the load given by the load variation applying means includes temperature setting means for setting the setting temperature of each room in a plurality of stages from weak to strong, rapid setting means for setting each room to rapid cooling with a heavy load, and the door sensor. The door opening time determination means for determining that the number of door opening times counted by the counting means upon receipt of the detection signal has reached a predetermined number of times, and the door opening time counted by the door opening time timer upon receiving the detection signal of the door sensor The door opening time determining means for determining that the engine has exceeded a predetermined opening time, and the rotational speed for determining that the rotational speed detected by the rotational speed detecting means for detecting the rotational speed of the compressor exceeds the predetermined rotational speed. Determining means, operating time determining means for determining that the compressor operating time counted by the operating time timer for counting the operating time of the compressor has exceeded a predetermined operating time, and the outside temperature sensor detects The outside air temperature determining means for determining that the temperature has exceeded a predetermined temperature and the defrosting setting means for causing the refrigerator to perform a defrosting operation are different depending on a combination of two or more arbitrary combinations. Item 5. The refrigerator according to any one of Items 3 to 4.

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