JPH0526564A - Controlling device for refrigerator - Google Patents

Abstract

PURPOSE:To perform a defrosting operation without influencing any bad effect on a food temperature of the food stored in a refrigerator by a method wherein a defrosting timing is selected in response to a control rule for a predetermined defrosting operation in response to an operating rate of a compressor and a door opening or closing frequency. CONSTITUTION:A controlling method decision means calculates an operating time of a compressor 1 with a compressor operating time calculation means 32 and detects that a door is kept open with a door detection means 33. Concurrently, a door opening or closing frequency for every unit time of calculated by a calculation means 34 according to the calculated door opening or closing count and then kept as it is. In turn, upon reaching a predetermined time with a compressor operation accumulated operating time judgement means 35, a door opening or closing frequency for every unit time is compared by a selecting means 36 for selecting a defrosting unit time so as to determine a unit time block entering the defrosting operation. Then, a defrosting starting timing is selected by a control value decision means 37 for defrosting operation is selected in response to a control rule of the defined defrosting operation and a final defrosting control starting is decided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator control device.

[0002]

2. Description of the Related Art In a conventional refrigerator, when a compressor operates, a timer is energized at the same time, and the timer integrates the operating time of the compressor, and when a certain time is reached, the defrosting operation is performed. Yes (Actually Sho 58-1923)
77 publication).

Another conventional refrigerator shown in FIG. 27 has been proposed (Japanese Utility Model Laid-Open No. 1-186875). In the figure, 101 is a compressor, 102 is a fan,
Reference numeral 105 is a freezing room, 103 is a temperature sensor (hereinafter, freezing room thermistor) for detecting the temperature inside the freezing room 105, 129 is a power supply circuit, 109 is a control board, and 131 is a drive circuit. Control board 1 for freezer thermistor 103
The control circuit 109 controls the drive circuit 131 to operate and stop the compressor 101. At the same time, the fan 102 was also synchronized with the compressor 101.

[0004]

Since the conventional control of the refrigerator is performed as described above, the defrosting operation starts when the compressor is operated for a certain period of time regardless of the usage state of the refrigerator, so that the refrigerator is defrosted. There is a problem in that defrosting may occur even when the food is frequently used, which affects the temperature of the stored food.

In the conventional refrigerator control, the fan rotation speed is constant irrespective of the usage state of the refrigerator, and the rotation speed is always the same even when the usage frequency is relatively low. However, there was a problem in that the capacity was exceeded and the power consumption was affected.

The present invention has been made in order to solve the above-mentioned problems, and affects the food temperature of the food stored in the refrigerator while responding to the change depending on the usage state of the refrigerator. An object of the present invention is to obtain a refrigerator control device capable of performing defrosting without giving.

Another object of the present invention is to provide a control device for a low-noise refrigerator that consumes less power and can control the number of rotations of a fan while responding to changes in the usage state of the refrigerator.

[0008]

[Means for Solving the Problems] Claim 1 according to the present invention
The control device of the refrigerator, forcibly circulates the cool air generated by the cooler of the refrigeration cycle using the compressor with the fan, and in the refrigerator having the door, means for integrating the operating time of the compressor, A means for accumulating the number of door openings and a means for updating the door opening / closing frequency from the accumulated door openings,
Means for selecting the defrosting timing based on the control rule of the defrosting operation of the cooler previously defined from the compressor operating time and the door opening / closing frequency, and the control value of the defrosting operation from the selected defrosting timing. And means for determining.

According to a second aspect of the present invention, there is provided a control device for a refrigerator, wherein a fan forcibly circulates cold air generated by a cooler of a refrigeration cycle using a compressor, and the refrigerator has a door. Means for accumulating the operating time of the compressor, means for updating the operating rate from the operating time of the compressor, means for accumulating the opening number of the door, and updating the door opening / closing frequency from the integrated door opening number. Means, means for selecting a defrosting timing based on a control rule of the defrosting operation of the cooler, which is defined in advance from the compressor operating rate and the door opening / closing frequency, and the defrosting operation of the defrosting operation from the selected defrosting timing. Means for determining a control value.

According to a third aspect of the present invention, there is provided a control device for a refrigerator, wherein a cool air generated by a cooler of a refrigeration cycle using a compressor is forcedly circulated by a fan, and the refrigerator has a door. Means for accumulating the operating time of the compressor, means for calculating the compressor operating rate from the operating time of the compressor, and estimating the defrostable time range from the compressor operating rate based on a pre-defined control rule. Means, means for accumulating the number of opening of the door, means for calculating a door opening / closing frequency from the accumulated number of opening of the door, and means for selecting a unit time for entering the defrosting operation of the cooler. And means for determining the control value of the defrosting operation from the defrosting timing.

According to a fourth aspect of the present invention, there is provided a refrigerator control device in which a cooler of a refrigerating cycle using a compressor forcibly circulates cold air with a fan to provide a refrigerator having a door. Means for accumulating the operating time of the compressor, means for calculating the compressor operating rate from the operating time of the compressor, and estimating the defrostable time range from the compressor operating rate based on a pre-defined control rule. Means, means for accumulating the number of opening of the door, means for calculating a door opening / closing frequency from the integrated door opening number, and unit time for entering the defrosting operation of the cooler is selected from the door opening / closing frequency. Means and means for determining the control value of the defrosting operation from the selected defrosting timing.

A refrigerator control device according to a fifth aspect of the present invention detects opening / closing of the door in a refrigerator in which a cool air generated by a cooler of a refrigeration cycle using a compressor is forcedly circulated by a fan. Detection means, means for accumulating the door opening / closing frequency from the output of the detecting means, means for updating the door opening / closing frequency, and rotation of the fan based on the fan operation control rule defined in advance from the door opening / closing frequency. And means for determining the number.

[0013]

The control device for a refrigerator according to the first aspect of the present invention does not affect the food temperature in the refrigerator because the defrosting operation of the cooler is performed by selecting the timing at which the door is opened and closed less frequently.

According to a second aspect of the present invention, the control device for a refrigerator has a defrosting operation of the cooler based on a control rule based on the operating rate of the compressor and the opening / closing frequency of the door. Absent.

According to a third aspect of the present invention, in the refrigerator controller, the defrosting operation of the cooler is performed based on the control rule based on the operating rate of the compressor and the opening / closing frequency of the door. Absent.

According to a fourth aspect of the present invention, in the refrigerator control device, the defrosting operation of the cooler is performed based on the control rule based on the operating rate of the compressor and the opening / closing frequency of the door. Absent.

According to the fifth aspect of the present invention, the control device for a refrigerator controls the number of rotations of the fan based on the control frequency based on the opening / closing frequency of the door, so that the power consumption is low and the noise is low.

[0018]

【Example】

Example 1. Embodiment 1 of the present invention will be described below with reference to FIGS. 1 is an overall configuration diagram of a first embodiment of a refrigerator according to the present invention. Reference numeral 1 is a compressor for compressing and circulating a refrigerant, 2 is a cooler for evaporating the refrigerant, 3 is a fan for circulating the cool air cooled by the cooler 2, and 5 is a refrigerating unit for guiding a part of the cool air to a refrigerating chamber 4. Chamber air duct, 6 a damper for opening and closing the air duct 5 to control cold air to the refrigerating compartment 4, 7 a defrosting heater for defrosting the cooler 2, and 9 detecting the temperature of the freezing compartment 8. F thermistor, 10
Is an R thermistor that detects the temperature of the refrigerating room 4, 11 is a door detector that detects the opening and closing of the door, 12 is an outside air thermistor that detects the ambient temperature of the refrigerator, and 13 is the temperature of the cooler 2 for ending defrosting. DEF thermistor to detect, 14
Is a control board for controlling the entire refrigerator, wherein the control board 14 comprises a control means 15 and a control method determination 16.
Next, the contents of the control means 15 will be described with reference to FIG. In FIG. 2, there are a switch (1) 18, a switch (2) 19, and a switch (3) 20 as means for turning on and off the power supply 17 of the electric parts, which respectively include the compressor 1, the fan 3, the damper 6, and the defrosting heater 7. It is a contact that turns on and off. The contacts are driven by a coil (1) 21, a coil (2) 22, and a coil (3) 23, respectively, and energization to these coils is performed by a drive circuit (1) 24, a drive circuit (2) 25, and a drive circuit ( 3) 26 is energized, and which of these is energized is determined by the microcomputer 27.

In the case of defrosting, the drive circuit (3) 26 energizes the coil (3) 23 to turn on the switch (3) 20 to supply electricity from the power source 17 to the defrosting heater 7 (for defrosting). The decision of the entry timing is made by the control decision means 16. As the input of the microcomputer 27,
The thermistors 9, 10, 12, and 13 and the door detector 11. Here, 28 to 31 are thermistors and voltage dividing resistors for dividing the voltage.

Next, the structure of the control determining means 16 for starting defrosting will be described with reference to FIG. Compressor operating time integrating means 32
The operation time of the compressor 1 is integrated by, and the door detection means 33 detects that the door is in the open state and inputs it. At the same time, the door opening / closing frequency for each unit time is calculated and held by the door opening / closing frequency calculation unit 34 from the door opening / closing number integrated for each unit time. On the other hand, the compressor operation integrated time accumulated by the compressor operation time integration means 32 is determined by the compressor operation integrated operation time determination means 35.
When the predetermined time is reached, the unit time selecting unit 36 for defrosting compares the door opening / closing frequencies for each unit time to determine the priority order according to the size and determine the unit time block for defrosting. Based on a predetermined defrosting operation control rule, the defrosting operation control value determining means 37 selects the timing to start defrosting, and determines the final defrosting control start.

Next, the numerical ratio of the door opening / closing frequency and the updating will be described in detail with reference to the flowchart of FIG. In step 38, the door opening / closing number x _i is integrated for each unit time T (Hr) obtained by dividing 24 hours. Every 24 hours, for each door opening / closing number x _i , x _i = − (Si / m) + x _i is converted, and the average of the past m days and the latest one day are added. In step 39, the door opening / closing frequency (S _i ) is updated to a new numerical value with the initial values of S _i = S _i + x _i S _i set to 0 i: 1 to n, n = 24 / T.

A method of determining a unit time block for defrosting from the defrostable unit time range estimated above will be described in detail with reference to FIG. In step 40, the door opening / closing frequency is compared in the entire unit time range, and the block with the lowest frequency is selected in step 41. Finally, the unit time block selected in step 42 is determined as the unit time for defrosting.

As described above, according to the first embodiment of the present invention, the change pattern of the number of times of opening and closing the door during the day is kept while constantly refreshing from the accumulated data of the past several days, and the defrosting is performed by the number of times of opening and closing the door. I put it in the least amount of so as to eliminate the bad influence on food. In order to know the usage state of the refrigerator, a detection device that detects the opening and closing of the door is provided, and the detection device counts the number of times the door is opened and closed.
On the other hand, a counter for counting 24 hours of the day by dividing it into blocks of 2 hours is provided, and the number of times the door is opened and closed is counted for each block. (This is the data for one day.) The data for this day is accumulated for several days (for m days: actually for eight days), and the newly counted data for one day is also accumulated. The data and the weighted average are calculated and held as a daily door opening / closing pattern (number of times of opening / closing of each block for 2 hours). From the held opening / closing pattern of the door, it is determined which block has few opening / closing of the door in the day, and the defrosting is performed when it comes to this block. The time required for defrosting is about 30.
It takes about 40 minutes to 40 minutes. As a result, defrosting can be performed during the day when the refrigerator is rarely used.

Example 2. Next, a second embodiment of the present invention will be described with reference to FIGS. First, the configuration of the control determining means 16 for starting defrosting will be described with reference to FIG. The operation time of the compressor 1 is integrated by the compressor operation time integration means 32,
The compressor operating time accumulating means 43 for each unit time accumulates the compressor operating time for each block obtained by dividing 24 hours into a unit time, and the door detecting means 33 detects and inputs the open state of the door. . Further, the operating unit of the compressor operating rate for each unit time calculates and holds the operating rate for each unit time from the compressor operating time accumulated for each unit time. At the same time, the door opening / closing frequency for each unit time is calculated and held by the door opening / closing frequency calculation unit 34 from the door opening / closing number integrated for each unit time. On the other hand, when the compressor operating accumulated time accumulated by the compressor operating time accumulating means 32 reaches a predetermined time by the compressor operating accumulated operating time judging means 35, the defrosting movable range estimating means 45 can perform defrosting predetermined. The unit time range of the accumulated operation time of the compressor is estimated from the operation rate of the compressor per unit time obtained by the compressor operation rate calculation unit 44 for each unit time.
The unit time selection unit 36 for defrosting compares the door opening / closing frequencies for each unit time within the estimated unit time range, determines the priority order based on the size, and determines the unit time block for defrosting. Based on a predetermined defrosting operation control rule, the defrosting operation control value determining means 37 selects the timing to start defrosting, and determines the final defrosting control start.

Next, the numerical ratio of the door opening / closing frequency and updating will be described in detail with reference to the flowchart of FIG. In step 38, the door opening / closing number x _i is integrated for each unit time T (Hr) obtained by dividing 24 hours. Every 24 hours, for each door opening / closing number x _i , x _i = − (Si / m) + x _i is converted, and the average of the past m days and the latest one day are added. In step 39, the door opening / closing frequency (S _i ) is updated to a new numerical value with the initial values of S _i = S _i + x _i S _i set to 0 i: 1 to n, n = 24 / T.

Next, the numerical ratio and update of the operating rate of the compressor will be described in detail with reference to the flowchart of FIG. 2 in step 46
The operating time t _i of the compressor is integrated for each unit time T (Hr) obtained by dividing 4 hours. For each operating time t _i , t _i = − (Ri / m) + t _i is converted every 24 hours, and the average of the past m days and the latest one day are added. In step 47, the operating rate R _i is updated to a new numerical value with the initial values of R _i = R _i + t _i R _i set to 0 i: 1 to n, n = 24 / T.

Next, with reference to FIG. 9, the estimation of the range of the unit time in which defrosting is possible from the above-described digitized operation rate will be described in detail using a flowchart. When the cumulative operation time S of the compressor reaches the predetermined time S ₁ in step 48, the numerically converted operation rate for each unit time is sequentially added from the current unit time in step 49, and added in step 50. Each time, it is determined whether or not it is within the defrosting movable range S ₂ . Step 5
The unit time that reaches the predetermined time in 1 to the unit time that exceeds the defrosting movable range is selected as the defrostable unit time range.

A method for determining a unit time block for defrosting from the defrostable unit time range estimated above will be described in detail with reference to FIG. In step 40, the door opening / closing frequency is compared within the unit time range in which defrosting is possible, and the block with the lowest frequency is selected in step 41. Finally, the unit time block selected in step 42 is determined as the unit time for defrosting.

As described above, according to the second embodiment of the present invention, the change pattern of the number of times of opening and closing of the door during the day is constantly maintained while refreshing the accumulated data of the past several days, and the operation of the compressor is performed. The change in the rate is also retained. When the accumulated operating time of the compressor reaches the specified time 1 (actually 8 hours), it reaches the specified time 2 (actually 16 hours) from the previously held compressor operating rate. Estimate the timing that seems to be so, and from this specified time 1 to specified time 2
In the meantime, defrosting was introduced at the place where the door held earlier had the least number of times to open and close, so as to eliminate adverse effects on food. In addition, the specified time 1 of the operating time of the compressor is the time when defrosting is required, and it is better to perform the defrosting after this time, and the specified time 2 interferes with the cooling performance and the like. This indicates the time that must be taken to ensure that defrosting is caused. In order to know the usage state of the refrigerator, a detection device for detecting the opening / closing of the door is provided, and the number of times the door is opened / closed is counted by this detection device.
A counter for dividing the time into blocks of 2 hours is provided, and the number of times the door is opened and closed is counted for each block. The operation time of the compressor is also counted for each block. (This is the data for one day.) The data for this day is accumulated for several days (for m days: actually for eight days), and the newly counted data for one day is also accumulated. Data and weighted average are taken and stored as a daily door opening / closing pattern (2 hours block opening / closing times) and compressor operating rate pattern (2 hours block operating times). deep. When the compressor operates and the cumulative operating time reaches the specified time 1 (8 hours) (the block at this time is referred to as "block 1"), the operating rate (operation Time) is added up, and the block when this total value reaches the specified time 2 (16 hours) is set as block 2, and the opening / closing pattern of the door held between block 1 and block 2 Between the two blocks, it is determined which block has less opening and closing of the door, and the defrosting is performed when this block is reached. As a result, it is possible to perform defrosting at an optimal defrosting timing even when the operation rate is low and when the refrigerator is rarely used.

Example 3. Next, a third embodiment of the present invention will be described with reference to FIGS. First, the configuration of the control determining means 16 for starting defrosting will be described with reference to FIG. The operating time of the compressor 1 is integrated by the compressor operating time integrating means 32, and the operating time of the compressor is integrated for each block obtained by dividing the 24 hours into unit time by the compressor operating time integrating means 43 for each unit time. The door detection means 33 detects that the door is in the open state and inputs it. Further, the operating unit of the compressor operating rate for each unit time calculates and holds the operating rate for each unit time from the compressor operating time accumulated for each unit time. At the same time, the door opening / closing frequency for each unit time is calculated and held by the door opening / closing frequency calculation unit 34 from the door opening / closing number integrated for each unit time.
On the other hand, when the compressor operating accumulated time accumulated by the compressor operating time accumulating means 32 reaches a predetermined time by the compressor operating accumulated operating time judging means 35, the defrosting movable range estimating means 45 can perform defrosting predetermined. A unit 44 for calculating the operating rate of the compressor per unit time within the unit time range of the integrated operation time of the compressor
It is estimated from the operating rate of the compressor per unit time obtained in. The unit time selection unit 36 for defrosting compares the door opening / closing frequencies for each unit time within the estimated unit time range, determines the priority order based on the size, and determines the unit time block for defrosting. Based on a predetermined defrosting operation control rule, the defrosting operation control value determining means 37 selects the timing to start defrosting, and determines the final defrosting control start.

Next, the numerical ratio of the door opening / closing frequency and updating will be described in detail with reference to FIG. 24 in step 38
The number of doors opened / closed x _{i for} each unit time T (Hr) obtained by dividing the time
Is added. Every 24 hours, for each door opening / closing number x _i , x _i = − (Si / m) + x _i is converted, and the average of the past m days and the latest one day are added. In step 39, the door opening / closing frequency (S _i ) is updated to a new numerical value with the initial values of S _i = S _i + x _i S _i set to 0 i: 1 to n, n = 24 / T.

Next, the numerical ratio and update of the operating rate of the compressor will be described in detail with reference to the flowchart of FIG. In step 46, the operating time t _i of the compressor is integrated for each unit time T (Hr) obtained by dividing 24 hours. For each operating time t _i , t _i = − (Ri / m) + t _i is converted every 24 hours, and the average of the past m days and the latest one day are added. In step 47, the operating rate R _i is updated to a new numerical value with the initial values of R _i = R _i + t _i R _i set to 0 i: 1 to n, n = 24 / T.

Next, referring to FIG. 14, the estimation of the range of the unit time in which defrosting is possible from the above-described digitized operating rate will be described in detail. When the cumulative operation time S of the compressor reaches the predetermined time S ₁ in step 48, the numerically converted operation rate for each unit time is sequentially added from the current unit time in step 49, and added in step 50. Each time, it is determined whether or not it is within the defrosting movable range S ₂ . In step 51, the unit time that reaches the predetermined time to the unit time that exceeds the defrostable range is selected as the defrostable unit time range.

A method for determining a unit time block for defrosting from the defrostable unit time range estimated above will be described in detail with reference to FIG. In step 40, the door opening / closing frequency is compared within the unit time range in which defrosting is possible, and the block with the lowest frequency is selected in step 41. Next, in step 43, it is determined whether the block next to the selected block has the maximum door opening / closing frequency among all the blocks, and if it has the maximum door opening / closing frequency, the block selected in step 44 is selected. Select the previous block of. Finally, the unit time block selected in step 42 is determined as the unit time for defrosting.

As described above, in the third embodiment of the present invention, the change pattern of the number of times of opening and closing of the door during the day is always retained while refreshing from the accumulated data of the past several days, and the operation of the compressor is performed. The change in the rate is also retained. When the accumulated operating time of the compressor reaches the specified time 1 (actually 8 hours), it reaches the specified time 2 (actually 16 hours) from the previously held compressor operating rate. Estimate the timing that seems to be so, and from this specified time 1 to specified time 2
In the meantime, defrost is put in the place where the number of times of opening and closing of the door saved earlier is the smallest, and if the time immediately after that, the number of times of opening and closing the door is the largest. In such a case, avoiding that timing and performing defrosting at an earlier timing, the adverse effect on food was eliminated. In order to know the usage state of the refrigerator, a detection device that detects the opening and closing of the door is provided, and the detection device counts the number of times the door is opened and closed. On the other hand, 2 of the day
A counter for counting 4 hours into 2 hour blocks is provided, and the number of times the door is opened and closed is counted for each block. The operation time of the compressor is also counted for each block. (This is the data for one day.) The data for this day is accumulated for several days (for m days: actually for eight days), and the newly counted data for one day is also accumulated. Data and weighted average are taken and stored as a daily door opening / closing pattern (2 hours block opening / closing times) and compressor operating rate pattern (2 hours block operating times). deep. At the time when the compressor operates and the cumulative operating time reaches the specified time 1 (8 hours) (the block at this time is referred to as "block 1"),
The operating rates (operating hours) for each block after that are summed up, and the block when this total value reaches the specified time 2 (16 hours) is set as block 2, and between this block 1 and block 2 , It is possible to judge which block has less opening and closing between two blocks based on the pattern of opening and closing the held door, and at the same time, determine the number of times of opening and closing the door of the block next to the block with few opening and closing of doors. Look up,
If the block has the largest number of times of opening and closing the door among all the blocks, defrosting is performed when the block immediately before the block having the least number of times of opening and closing the door is reached. As a result, it is possible to perform defrosting at an optimal defrosting timing even when the operation rate is low and when the refrigerator is rarely used. Moreover, when the refrigerator is used frequently, the defrosting does not adversely affect the heat.

Example 4. A fourth embodiment of the present invention will be described with reference to FIG. In step 40, the size of the door opening / closing frequency is compared within the unit time range in which defrosting is possible, the block with the lowest frequency is selected in step 41, and the block with the next least door opening / closing frequency is selected as the second candidate in step 45. To do. Next, in step 43, it is determined whether the block next to the selected block has the maximum door opening / closing frequency among all the blocks. If the block has the maximum door opening / closing frequency, in step 46, in step 45. Select the selected second candidate block. Finally, step 4
The unit time block selected in 2 is determined as the unit time for including defrost.

As described above, according to the fourth embodiment of the present invention, the change pattern of the number of times the door is opened and closed during the day is always retained while refreshing from the accumulated data of the past several days, and the operation of the compressor is performed. The change in the rate is also retained. When the accumulated operating time of the compressor reaches the specified time 1 (actually 8 hours), it reaches the specified time 2 (actually 16 hours) from the previously held compressor operating rate. Estimate the timing that seems to be so, and from this specified time 1 to specified time 2
In addition, the defroster should be put in at the point where the number of doors held earlier is the smallest, and if the time immediately after that, the number of doors opened and closed is the largest. In such a case, avoiding that timing, the defrosting is performed at the timing when the door is opened / closed second, so that the food is not adversely affected. In order to know the usage state of the refrigerator, a detection device that detects the opening and closing of the door is provided, and the detection device counts the number of times the door is opened and closed. On the other hand, a counter for counting 24 hours of the day by dividing it into blocks of 2 hours is provided, and the number of times the door is opened and closed is counted for each block. The operation time of the compressor is also counted for each block.
(This is the data for one day.) The data for this day is accumulated for several days (for m days: actually for eight days), and the newly counted data for one day is also accumulated. Data and weighted average are taken and stored as a daily door opening / closing pattern (2 hours block opening / closing times) and compressor operating rate pattern (2 hours block operating times). deep. When the compressor operates and the cumulative operating time reaches the specified time 1 (8 hours) (the block at this time is referred to as "block 1"), the operating rate (operation Block) when the total value reaches the specified time 2 (16 hours).
From the block opening and closing patterns that are held between block 1 and block 2, it is determined which block has less opening and closing between the two blocks, and at the same time the number of times the door is opened and closed. Check the number of times of opening and closing the door of the block next to the block with the least number of blocks, and if it is the block with the largest number of times of opening and closing the door, defrost when it comes to the block with the second number of times of opening and closing the door. To do. As a result, it is possible to perform defrosting at an optimal defrosting timing even when the operation rate is low and when the refrigerator is rarely used. Moreover, when the refrigerator is used frequently, the defrosting does not adversely affect the heat.

Example 5. The fifth embodiment of the present invention will be described below. FIG. 17 is an overall configuration diagram of a refrigerator according to the fifth embodiment of the present invention. A cooler 2 that circulates the refrigerant by a compressor 1 that compresses and circulates the refrigerant to evaporate the refrigerant, a fan 3 that circulates the cool air cooled by the cooler 2, and a freezer compartment thermistor 9 that detects the temperature of the freezer compartment 8. There is a control board 14 for controlling the entire refrigerator, in which the control board 14 includes a control means 15 and a control method determination means 16.
The contents of the control means 15 will be described below with reference to FIG.

In FIG. 18, a switch (1) 18 and a switch (2) 19 are provided as means for turning on and off the power supply 17 of the electric component.
There is ON / O of the compressor 1 and the fan 3 respectively.
It is a contact for FF, and these contacts are the coil 21 and
Driven by the coils 22, the energization of these coils is
The drive circuit (1) 24 and the drive circuit (3) 26 of 19 are energized.

Further, there is a photocoupler 47 and capacitors 48 and 49 for controlling the rotation speed of the fan 3,
The photocoupler 47 is energized by 20 drive circuits (2) 25. Which of these drive circuits (1) 24, drive circuit (2) 25, and drive circuit (3) 26 is energized? It is determined by the microcomputer 27. This decision
By the control method determining means 16. The inputs of the microcomputer 27 are the thermistor 9 and the door detector 11. Reference numeral 29 is a thermistor and a voltage dividing resistor for dividing the voltage.

The contents of the rotational speed control determining means 16 of the fan 3 will be described with reference to FIG. 19 with reference to a control block diagram. The door input means 50 detects that the door is in an open state, the door open signal input by the door open / close frequency integration means 51 is used as an input, and the door open number per unit time is added up to update the door open / close frequency. A new door opening number is always held at 52, and the fan rotation number determining means 53 determines the predetermined rotation number of the fan 3 from the door opening / closing frequency.

The contents of the rotational speed control determining means 16 of the fan 3 will be described below with reference to FIG. In step 54, the fact that the door is in the open state is detected and input. Next, in step 55, the door open signal input in step 54 is input, 24 hours is divided into unit times, and the number of door openings for each unit time is integrated. Step 56
Then, the number of doors opened per unit time is calculated for a certain period, and the number of doors opened for a new constant period is always held as data. Then, in step 57, the predetermined rotation number of the fan 3 is determined from the door opening / closing frequency per unit time.

Next, the numerical ratio of the door opening / closing frequency and updating will be described in detail with reference to FIG. 24 in step 58
The number of doors opened / closed x _{i for} each unit time T (Hr) obtained by dividing the time
Is added. Every 24 hours, in step 58, for each door opening / closing number x _i , x _i = − (Si / m) + x _i is converted, and the average of the past m days and the latest one day are added. In step 59, the door opening / closing frequency S _i is updated to a new value with the initial values of S _i = S _i + x _i S _i set to 0 i: 1 to n, n = 24 / T. Therefore, according to the priority of the door opening / closing frequency obtained in step 59, when the priority is high, the rotation speed of the fan is increased, and when the priority is low, the rotation speed is decreased.

Example 6. Next, a sixth embodiment of the present invention will be described with reference to FIGS. The method of selecting the defrosting timing from the numerically opened and closed door opening frequency and the defrostable range will be described in detail with reference to FIG. In step 60, the magnitude of the door opening / closing frequency for each unit time is compared, and step 61
Then, the ranking from "0" to "11" is performed. In step 62, the defrostable range is combined with the ranked data. Here, the data is synthesized by forcibly setting the order of the blocks that cannot be defrosted, that is, the blocks that should not be defrosted to "12". Step 63
Then, M ₁ = F (I ₁ , I ₂ , ..., I ₁ , ..., I ₁₂ ) F (I ₁ , I ₂ , ..., I ₁ , ..., I ₁₂ ) is I _{1 to} I
_Twelve functions, I _{1 to} I _12, are the combined data,
The door opening / closing frequency rank for each unit time is calculated using optimum preset parameters. Further, in step 64, O ₁ = F (M ₁ , M ₂ , ..., M ₁ , ..., M ₁₂ ) G (M ₁ , M ₂ , ..., M ₁ , ..., M ₁₂ ) is M _{1 to} M
_{As the 12} functions, the data obtained in step 63 is calculated by using optimum preset parameters to obtain data for each unit time. In step 65, a block to be defrosted is selected from the results obtained by the above calculation.
The contents of the calculation will be described with reference to FIG. The operation consists of hierarchical steps (intermediate layer and output layer). First, the operations of the intermediate layer are data I _{1 to} I ranked in step 62.
_The following operations are performed using ₁₂ as an input. M ₁ = 1 / (1 + EXP (I ₁ · W _{2 (1,1)} + I ₂ · W _{2 (1,2)} + ・ ・ ・ + I ₁₁ · W _{2 (1,11)} + I ₁₂ · W _{2 (1, 12)} )) M ₂ = 1 / (1 + EXP (I ₁ · W _{2 (2,1)} + I ₂ · W _{2 (2,2)} + ・ ・ ・ + I ₁₁ · W _{2 (2,11)} + I ₁₂ · W _{2 (2,12)} )) _··· M ₁₁ = 1 / (1 + EXP (I ₁ · W _{2 (11,1)} + I ₂ · W _{2 (11,2)} + ・ ・ ・ + I M ₁₂ = 1 / ( 1 + EXP (I ₁ · W _{2 (12,1)} + I ₂ · W _{2 (12,2)} + ・ ・ ・ + I ₁₁ · W _{2 (12,11)} + I ₁₂ · W _{2 (12,12)} )) The calculation of the output layer is performed as follows with the data of the intermediate layer as input: O ₁ = M ₁ · W _{1 (1,1)} + M ₂ · W _{1 (1,2)} + ... + M ₁₁・ W _{1 (1,11)} + M ₁₂・ W _{1 (1,12)} O ₂ = M ₁・ W _{1 (1,1)} + M ₂・ W _{1 (1,2)} + ・ ・ ・ + M ₁₁・W _{1 (1, 11)} + M ₁₂ · W _{1 (1, 12)} · · · O ₁₁ = M ₁ · W _{1 (11, 1 )} + M ₂ · W _{1 (11, 2 )} + ・ ・ ・ + M ₁₁・ W _{1 (11,11)} + M ₁₂・ W _{1 (11,12)} O ₁₂ = M ₁・ W _{1 (12,1)} + M ₂・ W _{1 (12,2)} + ・ _{·· + M 11 · W 1 (} 12,11) + M 12 · W 1 (12,12) block the final positive value at the output comes is selected as a block to perform defrosting. the decision step 65 It is carried out in. _{here, W 1 (1 ~ 12,} 1 ~ 12) and W _{2 (1} ~
₁₂ , ₁ to ₁₂ ) are the optimum parameters that relate the input and output, and this parameter is a preset value. (Data pre-tuned so as to finally select the optimum block) In the example shown here, the middle layer is a model with 12 units in it, but the middle layer is There may be any number of layers, and any number of units may be included.

Example 7. Next, a seventh embodiment of the present invention will be described with reference to FIG. A method of selecting a timing for reducing the rotation speed of the fan from the numerically represented door opening / closing frequency will be described in detail with reference to FIG. In step 71, the size of the door opening / closing frequency for each unit time is compared, and in step 72, ranking (I ₁ ) from “0” to “11” is performed. Step 7
3, M ₁ = F (I ₁ , I ₂ , ..., I ₁ , ..., I ₁₂ ) F (I ₁ , I ₂ , ..., I ₁ , ..., I ₁₂ ) is I ₁ to I
_{As the 12} functions, the door opening / closing frequency rank for each unit time is calculated by using optimum preset parameters. Further, in step 74, O ₁ = F (M ₁ , M ₂ , ..., M ₁ , ..., M ₁₂ ) G (M ₁ , M ₂ , ..., M ₁ , ..., M ₁₂ ) is M _{1 to} M
_{As the 12} functions, the data obtained in step 73 is calculated by using optimum preset parameters to obtain data for each unit time. In step 75, a block that reduces the rotation speed of the fan is selected from the results obtained by the above calculation. The contents of the calculation are the same as in the sixth embodiment.

Example 8. Next, an eighth embodiment of the invention will be described with reference to FIGS. The method for determining the unit time block for supercooling the freezer will be described in detail with reference to FIG. In step 80, the door opening / closing frequency is compared, and the block with the highest frequency is selected in step 81. Finally, in step 82, a block before the block selected in step 81 is determined as a unit time block to be supercooled. As a method of supercooling, as shown in FIG. 26, in the selected block, the temperature at which the compressor 1 and the fan 3 are turned off is made lower than that in the normal time to lower the temperature in the refrigerator and raise the food temperature. Is to suppress. Also, the same supercooling operation can be performed by operating the compressor 1 and the fan 3 for a certain period of time.

[0047]

The present invention has the following effects.
The control device for a refrigerator according to claim 1, wherein the cool air generated by the cooler of the refrigeration cycle using the compressor is forcibly circulated by the fan, and the operating time of the compressor is integrated in the refrigerator having the door. A means for accumulating the number of opening of the door, a means for updating the door opening / closing frequency from the accumulated door opening number, and a defrosting operation of the cooler pre-specified from the compressor operating time and the door opening / closing frequency. Means for selecting the defrosting timing based on the control rule, and means for determining the control value of the defrosting operation from the selected defrosting timing, so that the timing of the door opening / closing frequency is low. Since the defrosting operation of the cooler is performed by selecting it, it does not affect the food temperature in the refrigerator.

A refrigerator control device according to a second aspect of the present invention is a refrigerator having a door in which a cool air generated by a cooler of a refrigeration cycle using a compressor is forcibly circulated by a fan, and which has a door,
A means for accumulating the operating time of the compressor, a means for updating the operating rate from the operating time of the compressor, a means for accumulating the opening number of the door, and a door opening / closing frequency from the integrated opening number of the door. A means for updating, a means for selecting a defrosting timing based on a control rule of the defrosting operation of the cooler, which is defined in advance from the compressor operating rate and a door opening / closing frequency, and the timing from the selected defrosting Since it is configured to have a means for determining the control value of the defrosting operation, the defrosting operation of the cooler is performed based on the control rule from the operating rate of the compressor and the opening / closing frequency of the door, which affects the food temperature in the refrigerator. Don't give.

In a refrigerator having a door, the controller for a refrigerator according to claim 3 forcibly circulates the cool air generated by the cooler of the refrigeration cycle using the compressor with the fan, and has a door.
A means for accumulating the operating time of the compressor, a means for calculating the compressor operating rate from the operating time of the compressor, and a time range in which defrosting is possible based on a control rule previously defined from the compressor operating rate. A means for estimating, a means for accumulating the number of opening of the door, a means for calculating a door opening / closing frequency from the integrated number of opening of the door, a means for selecting a unit time for entering the defrosting operation of the cooler, Since the configuration is provided with means for determining the control value of the defrosting operation from the selected defrosting timing, the defrosting operation of the cooler is performed based on the control rule from the operating rate of the compressor and the opening / closing frequency of the door. Therefore, it does not affect the food temperature in the refrigerator.

In a refrigerator having a door, the controller for a refrigerator according to claim 4 forcibly circulates the cool air generated by the cooler of the refrigeration cycle using the compressor with a fan, and has a door.
A means for accumulating the operating time of the compressor, a means for calculating the compressor operating rate from the operating time of the compressor, and a time range in which defrosting is possible based on a control rule previously defined from the compressor operating rate. From the door opening / closing frequency, a means for calculating the door opening number, a means for calculating the door opening / closing frequency from the integrated door opening number, and a unit time for entering the defrosting operation of the cooler from the door opening / closing frequency. Since the configuration is provided with means for selecting and means for determining the control value of the defrosting operation from the selected defrosting timing, cooling is performed based on the control rule from the operating rate of the compressor and the opening / closing frequency of the door. The defrosting operation of the container does not affect the food temperature in the refrigerator.

A refrigerator control device according to a fifth aspect of the present invention is a refrigerator in which cold air generated by a cooler of a refrigeration cycle using a compressor is forcibly circulated by a fan, and a detection means for detecting opening / closing of the door, A means for accumulating the door opening / closing frequency from the output of the detecting means, a means for updating the door opening / closing frequency, and a fan rotation speed are determined based on the fan operation control rule defined in advance from the door opening / closing frequency. Since the configuration is provided with the means, the rotation speed of the fan is controlled based on the control rule based on the opening / closing frequency of the door, so that the power consumption is low and the noise is low.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a control device for a refrigerator according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram of a refrigerator control device according to Embodiment 1 of the present invention.

FIG. 3 is a block diagram of a control device for a refrigerator according to the first embodiment of the present invention.

FIG. 4 is a flowchart of the control device for the refrigerator according to the first embodiment of the present invention.

FIG. 5 is a flowchart of the control device for the refrigerator according to the first embodiment of the present invention.

FIG. 6 is a block diagram of a control device for a refrigerator according to a second embodiment of the present invention.

FIG. 7 is a flowchart of a control device for a refrigerator according to a second embodiment of the present invention.

FIG. 8 is a flowchart of a control device for a refrigerator according to a second embodiment of the present invention.

FIG. 9 is a flowchart of the control device for the refrigerator according to the second embodiment of the present invention.

FIG. 10 is a flowchart of the control device for the refrigerator according to the second embodiment of the present invention.

FIG. 11 is a block diagram of a control device for a refrigerator according to a third embodiment of the present invention.

FIG. 12 is a flowchart of a refrigerator control device according to a third embodiment of the present invention.

FIG. 13 is a flowchart of a refrigerator control device according to a third embodiment of the present invention.

FIG. 14 is a flowchart of a refrigerator control device according to a third embodiment of the present invention.

FIG. 15 is a flowchart of a refrigerator control device according to a third embodiment of the present invention.

FIG. 16 is a flowchart of the control device for the refrigerator according to the fourth embodiment of the present invention.

FIG. 17 is an overall configuration diagram of a control device for a refrigerator according to a fifth embodiment of the present invention.

FIG. 18 is a circuit diagram of a control device for a refrigerator according to a fifth embodiment of the present invention.

FIG. 19 is a block diagram of a control device for a refrigerator according to a fifth embodiment of the present invention.

FIG. 20 is a flowchart of the control device for the refrigerator according to the fifth embodiment of the present invention.

FIG. 21 is a flowchart of a refrigerator control device according to a fifth embodiment of the present invention.

FIG. 22 is a flowchart of the control device for the refrigerator according to the sixth embodiment of the present invention.

FIG. 23 is a diagram showing a calculation method of specified calculation in the control device for the refrigerator according to the sixth embodiment of the present invention.

FIG. 24 is a flowchart of the control device for the refrigerator according to the seventh embodiment of the present invention.

FIG. 25 is a flowchart of the control device for the refrigerator according to the eighth embodiment of the present invention.

FIG. 26 is a time chart diagram for explaining supercooling of the control device for the refrigerator according to the eighth embodiment of the present invention.

FIG. 27 is an overall configuration diagram of a conventional refrigerator control device.

[Explanation of symbols]

1 compressor 2 cooler 3 fans 15 Control means 16 Control method determining means 49 Compressor operating time integrating means 53 Compressor operating rate calculation means 54 Door open / close frequency calculation means 55 Defrosting time range estimation means 56 Means for selecting the unit time for defrosting 57 Defrosting control value determination means 79 Fan rotation speed determination means

Claims (5)

[Claims] 1. In a refrigerator having a door, the cool air generated by a cooler of a refrigeration cycle using a compressor is forcibly circulated by a fan, and means for integrating the operating time of the compressor; Based on the control rule for the defrosting operation of the cooler, which is defined in advance from the compressor operating time and the door opening / closing frequency, means for integrating the opening number, means for updating the door opening / closing frequency from the integrated door opening number And a means for selecting a defrosting timing and a means for determining a control value for the defrosting operation from the selected defrosting timing. 2. A unit for forcibly circulating the cool air generated by a cooler of a refrigeration cycle using a compressor with a fan to integrate the operating time of the compressor in a refrigerator having a door, and the compressor. Means for updating the operating rate from the operating time, means for accumulating the number of opened doors, means for updating the door opening / closing frequency from the accumulated door opening number, the compressor operating rate and the door opening / closing frequency From a refrigerator provided with means for selecting a defrosting timing based on a control rule of the defrosting operation of the cooler previously defined from the above, and means for determining a control value for the defrosting operation from the selected defrosting timing. Control device. 3. A unit for forcibly circulating the cool air generated by a cooler of a refrigeration cycle using a compressor with a fan to integrate the operating time of the compressor in a refrigerator having a door, and this compressor. Means for calculating the compressor operating rate from the operating time, means for estimating the defrostable time range from the compressor operating rate based on a predetermined control rule, and means for accumulating the opening number of the door A means for calculating the door opening / closing frequency from the accumulated number of doors, a unit time selecting means for entering the defrosting operation of the cooler, and a control value for the defrosting operation from the selected defrosting timing. A control device for a refrigerator provided with a means for determining. 4. A unit for forcibly circulating a cool air generated by a cooler of a refrigeration cycle using a compressor with a fan to integrate the operating time of the compressor in a refrigerator having a door, and the compressor. Means for calculating the compressor operating rate from the operating time, means for estimating the defrostable time range from the compressor operating rate based on a predetermined control rule, and means for accumulating the opening number of the door A means for calculating the door opening / closing frequency from the integrated number of doors opened, a means for selecting a unit time for entering the defrosting operation of the cooler from the door opening / closing frequency, and a timing for selecting the defrosting cycle. A control device for a refrigerator, comprising: a means for determining a control value for a defrosting operation. 5. A refrigerator in which cold air generated by a cooler of a refrigeration cycle using a compressor is forcibly circulated by a fan, and a detection means for detecting opening / closing of the door, and a door opening / closing based on an output of the detecting means. Control of a refrigerator provided with means for accumulating frequencies, means for updating this door opening / closing frequency, and means for determining the number of rotations of the fan based on the control rule of the fan operation defined in advance from the door opening / closing frequency apparatus.