JPH01310285A - Deodorizing control device for refrigerator - Google Patents

Abstract

PURPOSE:To increase the operating rate of a deodorizer when the opening and closing frequency of a door is high and eliminate the provision of dislike feeling due to smell in a refrigerator when the door is opened by controlling the operation of the deodorizer by the opening and closing frequency of the door of the refrigerator and a timer. CONSTITUTION:Three kinds of modes of effecting an intermittent operation in accordance with preset operating time limit and the stopping time limit of a deodorizer 2 are stored in a microcomputer 3. During a period of time wherein the door of a refrigerator is not opened, the intermittent operation is effected through 'mode 1 routine', 'mode 2 routine' and 'mode 3 routine' and, thereafter, 'mode 3 routine' is repeated. When the door is opened during the operation of respective modes, the operation of the deodorator 2 is stopped and the operation is returned again to the initial 'mode 1 routine' when the door is closed. The intermittent operation of 'mode 3 routine' is effected through the 'mode 1 routine' and the 'mode 2 routine' again and, thereafter, the intermittent operation of the 'mode 3 routine' is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deodorizing control device for a refrigerator that controls a deodorizing device built into the refrigerator.

[Prior art] As a conventional deodorizing control device for refrigerators of this type,
The technique disclosed in Japanese Patent No. 1-104182 can be mentioned.

Figure 12 is a control circuit diagram of a conventional deodorizing control device for a refrigerator.
FIG. 13 shows the electron f! shown in FIG. 12! FIG. 3 is a control circuit diagram showing an i control circuit.

In the figure, (12) is the compressor of the refrigerator, (20) is the thermostat that controls the operation of the compressor (12) depending on the temperature inside the refrigerator, and (13) is the compressor (12) and thermostat 1-(20). (15) is the door switch that is switched by opening and closing the refrigerator door, (15a) is the fixed contact of the door switch (15), (15b) is the fixed contact of the door switch (15) , (15
c) is the movable contact of the door switch (15); when the door is closed, the movable contact (15G) and the fixed contact (15a) close;
When the door is open, the movable contact (15G) and fixed contact (15G)
b) closes. (14) is an electric blower for blowing cold air from the evaporator into the refrigerator, and it is connected to the fixed contact (15a> of the door switch (15>), and this series circuit connects the compressor (12) and thermostat ( It is connected in parallel to the series circuit of 20). (16) is an interior light inside the refrigerator and is connected to the fixed contact (15b) of the door switch (15), '12) is connected in parallel to the series circuit of thermostat 1-(20). (11) is a deodorizing device connected in parallel with the electric blower (14), and (17) is a deodorizing device (11) connected in parallel with the electric blower (14). ), a relay contact (10) is used to operate or stop the relay contact (10).
7) a relay coil that opens and closes; (18) an electronic control circuit that controls power supplied to the relay coil (10);
9) is a timer built into the electronic control circuit (1B).

The conventional refrigerator deodorization control device configured as described above operates as follows.

When the refrigerator is operating in a normal refrigeration cycle, the compressor (12) is repeatedly operated and stopped by turning on and off the thermostat (20), and the temperature inside the refrigerator is maintained at a constant temperature. At this time, the refrigerator door is closed.
The fixed contact (15a> and the movable contact (15a) of the door switch (15)
15c) is closed and the electric blower (14) is in operation.

A deodorizing device (11) connected in parallel with an electric blower (14)
) is closed, and the deodorizing device (11) is also in operation.

When the refrigerator door is opened, the fixed contact (15a) and movable contact (15C) of the door switch (15) open, and the fixed contact (
15b) and the movable contact (15c) are closed. Therefore, the interior light (16) connected to the fixed contact (15b) lights up and illuminates the interior of the refrigerator, the electric blower (14) stops, the timer (19) is reset, and the relay coil (10) )
is energized, the relay contact (17) opens, and the deodorizing device (
11) is stopped.

When the refrigerator door is closed, the timer (19
) integrates the time limit, and when a predetermined time limit has elapsed, the energization to the relay coil (10) is cut off, and the relay contact (17)
is closed and the deodorizing device (11) operates.

[Problems to be Solved by the Invention] Since the conventional deodorizing control device for a refrigerator is configured as described above, the deodorizing bag @ (11) can be used for a predetermined period of time when the refrigerator door is open and after the door is closed. Since the device only stops during the middle of the day and operates continuously at other times, it may continue to operate even when the eyes are not opened or closed for a long time, such as at night, resulting in unnecessary power consumption.

Also, if the door is opened and the predetermined time period has not passed, the deodorizing bag @ (
11) is not operated, so if the door is opened and closed intermittently, the deodorizing device (11) remains stopped and no deodorizing action is performed.

SUMMARY OF THE INVENTION An object of the present invention is to provide a deodorizing control device for a refrigerator that can change the operating time of the deodorizing device depending on the opening/closing slope of the refrigerator door and can perform efficient deodorization.

[Means for Solving the Problems] The deodorizing control device for a refrigerator according to the present invention detects the opening and closing of the refrigerator door with a door opening/closing detection sensor that detects opening and closing of the refrigerator door, and controls the operation of the deodorizing device with a control circuit. It is controlled by a timer that integrates the operating time or stop time of the deodorizing device based on the frequency of opening and closing of the refrigerator door and the opening and closing of the refrigerator door.

[Operation] In the present invention, when the door of the refrigerator is opened, the door opening/closing sensor detects that the door is opened, thereby stopping the deodorizing device, and when the refrigerator door is closed, the door opening/closing sensor detects this. The deodorizing device is operated intermittently by repeatedly starting and stopping, and the operating time and stop time are adjusted according to the elapsed time after the door is closed.If the eyes are not opened or closed for a long time, such as at night, the operating time is reduced. When the door is opened and closed intermittently, the operating time of the deodorizing device is increased, so there is no wasted power consumption, and even when the door is opened and closed intermittently, deodorization can be performed with good response. .

[Example] The present invention will be explained in detail below.

FIG. 1 is a block diagram showing a deodorizing control device for a refrigerator according to a first embodiment of the present invention, and FIG. 2 shows an operating mode in which the deodorizing control device for a refrigerator of the present embodiment shown in FIG. 1 drives the deodorizing device. This is an explanatory diagram. Moreover, FIGS. 3 to 6 are flowcharts of a program for controlling the deodorizing control device for a refrigerator according to this embodiment.

In the figure, (1) is a door opening/closing sensor that detects the opening and closing of the refrigerator door, (2) is a known deodorizing device that generates ozone by silent discharge and decomposes malodorous components using this ozone and an ozone decomposition catalyst, and (3) is a A microcomputer that controls the operation of the deodorizing device (2), (4) is a timer built into the microcomputer (3), and (6) is a deodorizing device (2).
(6b) is the contact of relay (6), (6a) is the contact (6b) of relay (6).
) is a relay coil for opening and closing, and (5) is a driver that operates the relay (6) by a signal from the microcomputer (3).

The microcomputer (3) stores three types of modes in which the deodorizing device (2) is operated intermittently at predetermined operating and stopping time limits.

The operation of the refrigerator deodorization control device of this embodiment configured as described above will be explained using FIG. 2 and FIGS. 3 to 6.

First, before executing this program, it is assumed that the RAM and the board used for executing this program are initialized, and that a free-run timer is used as the timer for setting the time limit.

First, in step S1, the deodorizing device (2)
In order to determine the driving method, the flag is set to ``1''. When F=1 is confirmed in step S2, step 51
Select "Mode 1 Routine" with 00. Further, when F=2 is confirmed in step S3, "mode 2 routine" is selected in step 3200. Also, in step S3, F=
If F=2 is not determined, step 330
0 selects "Mode 3 Routine". That is, in a state other than the initial state, the mode is selected by the flag F set in another process.

In step S5 of the "mode 1 routine", a signal is output from the microcomputer (3) to the driver (5), and the driver (5) excites the relay (6) to operate the deodorizing device (2). In step S6, the opening/closing of the refrigerated dust door is detected by the door opening/closing sensor (1), and when the store is closed, the deodorizing device (2) is activated by the timer (4) built in the microcomputer (3) in step S7. It is determined whether or not the set time limit lower after the start of operation has reached a preset time limit ↑1a, and if the time limit t1a has not been reached, the process returns to step S6, and steps S6 and 2 until the time limit tla is reached.
Step 87 is executed. During this time, the deodorizing device (2) continues to operate. If the door is opened while the deodorizing device (2) is operating during this time, it is determined in step S6, and the microcomputer (3) is activated by the relay (6) in step S4. ) is de-energized, the energizing circuit to the deodorizing device (2) is opened, the deodorizing device (2) is stopped, and the process returns to step S1.

When the set time limit T reaches the time limit tla in step S7, the deodorizing device (2) is stopped in step S8, and step S9
It is determined whether the door is open or not, and if the door is open, in step 310, the timer (4) built in the microcomputer (3) is used to set the time limit after the deodorizing device (2) stops. It is determined whether or not has reached a preset time limit ↑1b, and if the time limit tll) has not been reached, the process returns to step S9 and continues in step S until the time limit t1b is reached.
9. Execute step 310. During this time, the deodorizing device (
2) continues the stopped state. However, this deodorizing device (
2) If the door is opened while the machine is stopped, this is determined in step S9 and the process returns to step S1.

When the lower set time limit reaches time limit ↑1b in step S10,
At step 311, flag F is set to "2", and the "mode 1 routine" at step 3100 is ended. and,
If it is determined in step S2 that F=1 is not determined, and furthermore, F=2 is determined in step S3, step 5
At step 200, the "MOU 2 routine" is selected.

In the "mode 2 routine", first, the deodorizing device (2) is operated in step S12. In step S13, the door opening/closing sensor (1) detects the opening/closing of the door, and if the door is closed, the deodorizing device (2) is activated by the timer (4) built in the microcomputer (3) in step S14. It is determined whether the set time limit T after starting has reached the preset time limit t2a, and if the time limit ↑2a has not been reached, the process returns to step 313 and executes steps 313 and 314 until the time limit t2a is reached. do. During this time, the deodorizing device (2) continues to operate. However, if the door is opened during this time, it is determined in step 313, the deodorizing device (2) is stopped in step $4, and the process returns to step S1.

When the set time limit T reaches the time limit t2a in step 514,
In step S'15, the deodorizing device (2) is stopped, and in step 316, it is determined whether the door is open. When the door is closed, the microcomputer (
The built-in timer (4) in step 3) determines whether the set time T after the deodorizing device (2) stops has reached time t2b, and if it has not reached time t2b, step 3
16, and step 316 until the time limit t2b is reached;
Step 317 is executed. During this time, the deodorizing equipment (2)
continues to be stopped. However, if the door is opened during this time, the process returns from step 316 to step S1. Also,
When the set time limit lower reaches the time limit ↑2b as determined in step 317, the microcomputer (3
) in step 3200.
"Mode 2 Routine" ends.

F=1 is denied at step $2, and further, step S3
If F=2 is denied in step 3300, "Mode 3" is selected.
Call "Routine".

In the "mode 3 routine", the deodorizing device (2) is operated in step S19, and the opening/closing of the door is detected by the door opening/closing sensor (1) in step S20. When the door is closed, it is determined in step 321 whether the set time period T after the deodorizing device (2) starts operating has reached the preset time period t3a, and if the time period t3a has not been reached, Return to step 320 and continue to step 32 until time limit t3a is reached.
0 and step 321 are executed. During this time, the deodorizing device (
2) continues operation. However, if the door is opened during this time, it is determined in step S20, the deodorizing device (2) is stopped in step S4, and the process returns to step S1.

When it is determined in step 321 that the set time limit T has reached the time limit t3a, the deodorizing device (2) is stopped in step S22, and in step 323 it is determined whether the door is open. The set time period T after the deodorizing device 2 stops in step 324 is the preset time period t3b.
If the time limit tab has not been reached, the process returns to step 323 and executes steps S23 and 324 until the time limit t3b is reached. During this time, the deodorizing device (2) remains in a stopped state. However, if the door is opened during this time, it is determined in step 323,
Return to step S1. When the set time limit T reaches the time limit tab in step S24, the process returns to step S2, passes through step S3, and then enters the "mode 3 routine" process of step 3300 again.

As mentioned above, the refrigerator deodorization control device of this embodiment performs the "Mode 1 routine", the "Mode 2 routine", and the "Mode 3 routine" while the refrigerator door is not opened.
Then, intermittent operation is performed in each mode, and then the "mode 3 routine" is repeatedly executed. However, if the door is opened during operation in each mode, the deodorizing device (2) will stop operating, and when the door is closed, it will return to the first mode 1.
After returning to the "Mode 1 Routine", intermittent operation in each mode is performed again through the "Mode 1 Routine", the "Mode 2 Routine", and the "Mode 3 Routine", and then the "Mode 3 Routine" is repeatedly executed.

Hey, the preset time limit is t la>↑2a> t
3a, which means that the operating time of the deodorizing device (2) is the longest in the "Mode 1 routine" and becomes shorter as it progresses to the "Mode 2 routine" and the "Mode 3 routine". In addition, the different preset time periods in each mode have the relationship t lb < t 2b < t 3b, which means that the deodorizing device stop time is the shortest in the "mode 1 routine" and the shortest in the "mode 2 routine". , which becomes longer as it progresses to the "mode 3 routine".

In this embodiment, the operation time limit and the stop time limit are repeated once in the same mode, but when implementing the present invention, a counter is used to count the repetition of this multiple times, and when it is repeated a predetermined number of times, the mode is changed. A change judgment may be made.

In this way, this deodorizing control device for a refrigerator controls the deodorizing device (2), so the microcomputer (3) determines the open/closed state of the door based on the signal from the door open/close sensor (1), and when the door is opened, The deodorizing device (2) is stopped, and when the door is closed, the deodorizing device (2) is repeatedly operated and stopped, and its operation time is gradually shortened, and the stop time is gradually lengthened to increase the operation rate of the deodorizing device (2). It is a lower value. For this reason, when the door is closed for a long time, for example at night, the deodorizing device (
2) It is possible to lower the operating rate and suppress wasteful power consumption. On the other hand, when the door is opened and closed frequently, for example during the daytime, the deodorizing device (2) increases its operating rate, so when the door is opened, the person opening the door is exposed to the odor inside the refrigerator. It doesn't give off any disgust.

FIG. 7 is a block diagram showing a refrigerator deodorization control device according to a second embodiment of the present invention, and FIGS. 8 to 11 are flowcharts of a program for controlling the refrigerator deodorization control device according to the second embodiment. Note that in the drawings, (1) to (6) indicate the same or corresponding parts as in the first embodiment, so redundant explanation will be omitted here. However, the program in the microcomputer (3) is different from that of the first embodiment. Further, in FIG. 7, (7) is a light sensor that detects the intensity of light outside the refrigerator.

Next, the operation of the refrigerator deodorization control device of this embodiment configured as described above will be explained. In this embodiment, only the differences from the first embodiment will be explained.

In the first embodiment, the deodorizing device (2) was operated intermittently in each mode according to the set time limit after the door was closed, but in this second embodiment, the light sensor (7) detects the intensity of light outside the refrigerator. is detected, and each mode of the deodorizing device (2) is selected depending on the intensity of this light, and the deodorizing device (2) is operated intermittently.

In step 330, the optical sensor (7) detects light outside the refrigerator, and inputs the signal to the microcomputer (3) to determine the strength of the light. Then, in step 331, the microcomputer (3) changes the intensity of the light to "strong" or "medium".
- Divide into three levels of "weak" and set the flag F as F=1 for "strong", F=2 for "medium", and F=3 for "weak".

When F=1 in step 332, in step 5400
``Mode 1 Routine'' is called, and ``Mode 1 Routine'' is called.
Steps 335 to S41 correspond to steps S5 to 31 in the flowchart of FIG. 4 of the first embodiment.
Performs the same operation as 1.

When the door is opened during the processing of the "mode 1 routine", the deodorizing device (2) is stopped in step 334, and the strength of the light outside the refrigerator is detected again in step S30,
Based on this, the flag Ftfil is set in step S31, and when F=1 in step S32, the "mode 1 routine" is repeatedly executed.

Then, if the flag F is not F="l", step 33
At step 3, it is determined whether F=2, and if it is determined that F=2, the "mode 2 routine" is called at step 5500. In this "mode 2 routine" as well, steps 342 to 348 perform the same operations as steps 312 to 318 in FIG. 5 of the first embodiment.

Further, if the flag FtfiF is not 2, step 36
00 calls the "mode 3 routine".

Steps 349 to 354 of this "mode 3 routine" perform the same operations as steps 319 to 324 in the flowchart of FIG. 6 of the first embodiment.

When the "mode 3 routine" is finished in step S54,
■Once again, the "mode 3 routine" is called at step 3600 via steps 332 and 333, and the "mode 3 routine" is called repeatedly.
``Mode 3 Routine'' is executed until the door can be opened.

By the way, in this embodiment, the "mode 3 routine" is repeatedly executed until the door is opened, but when implementing the present invention, the "mode 3 routine" is executed at predetermined intervals with a timer or with a counter. After executing this "Mode 2 Routine" or "Mode 3 Routine" a number of times, the processing of the routine from step 530 may be started;
The routine processing from step 330 may be started without setting the 7-lag F in steps 341 and 348.

In this way, the refrigerator deodorization control device of this embodiment uses the door opening/closing sensor (1) to control the deodorization device (2).
The microcomputer (3) determines whether the door is open or closed based on the signal from the refrigerator. When the door is open, the deodorizing device (2) is stopped, and when the door is closed, the light sensor (7) detects the strength of the light outside the refrigerator. Based on the signal, the microcomputer (3) selects the operation mode of the deodorizing device (2) depending on the strength of the light.
) can be operated and stopped repeatedly. Therefore, when the outside of the refrigerator is dark, for example at night, the operating rate of the deodorizing device (2) can be reduced and power consumption can be reduced.On the other hand, when the outside of the refrigerator is bright, for example during the day, the deodorizing device The operating rate of the device (2) is increased, and the odor inside the refrigerator does not make the person who opens the door feel disgusted when the door is opened.

In each of the above embodiments, the deodorizing device (2) has three operating modes, but it goes without saying that by increasing the number of operating modes, the deodorizing device (2) can be controlled more precisely.

In addition, in the example, the operation time and stop time of the deodorizing device (2) are varied depending on the mode, but the operation time is fixed and only the stop time is changed, or the stop time is constant and only the operation time is changed. There is an effect.

[Effects of the Invention] As described above, the deodorizing control device for a refrigerator of the present invention includes a door opening/closing sensor that detects opening/closing of a refrigerator door, a deodorizing device disposed inside the refrigerator, and a deodorizing control device for detecting opening/closing of the refrigerator door. a timer for accumulating the operation time or stop time of the deodorizing device, and a control circuit that detects opening and closing of the refrigerator door with the door opening/closing sensor and controls the operation of the deodorizing device based on the frequency of opening and closing of the refrigerator door and the timer. It consists of

Therefore, the open/closed state of the door is determined based on the signal from the m open/close sensor, the deodorizing device is stopped when the door is opened, and the deodorizing device is repeatedly operated and stopped when the door is closed, and the operation time limit is gradually set. Since the operating rate of the deodorizing device can be lowered by making the stop time shorter and gradually lengthening the stop time, when the door is closed for a long time, the operating rate of the deodorizing device can be lowered and power consumption can be reduced.

Furthermore, when the door is opened and closed frequently, the operating rate of the deodorizing device is increased, and when the door is opened, the person who opens the door is not made to feel disgusted by the odor inside the refrigerator.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a deodorizing control device for a refrigerator according to a first embodiment of the present invention, and FIG. 2 shows an operating mode in which the deodorizing control device for a refrigerator of the present embodiment shown in FIG. 1 drives the deodorizing device. Explanatory drawings, FIGS. 3 to 6 are flowcharts of a program for controlling the refrigerator deodorization control device of the first embodiment, and FIGS.
The figure is a block diagram showing a refrigerator deodorizing control device according to a second embodiment of the present invention, FIGS. 8 to 11 are flowcharts of a program for controlling the refrigerator deodorizing control device according to the second embodiment, and FIG. 12 is a conventional FIG. 13 is a control circuit diagram showing the electronic control circuit shown in FIG. 12. In the figure, 1: door opening/closing sensor, 2: deodorizing device, 32 microcomputer, 4: timer. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts. Agent: Patent attorney Daikichi Masuketsu and two others volunteered to write amendments to Figure 11 procedures)

Claims (1)

[Scope of Claims] A door opening/closing sensor that detects opening/closing of a refrigerator door, a deodorizing device disposed in the refrigerator, and a timer that integrates an operation time or a stop time of the deodorizing device from the opening/closing of the refrigerator door. and a control circuit that detects opening/closing of the refrigerator door using the door opening/closing sensor and controls the operation of the deodorizing device based on the frequency of opening/closing the refrigerator door and the timer. Deodorization control device.