KR100382298B1 - Control method of bad smell removal device in refrigerator - Google Patents

Abstract

The present invention relates to an ozone control method of an odor removing device (ozone generator) in a refrigerator made of ozone generation and reduction means, and in particular, a human body detecting means and door opening / closing for detecting a user's door opening request on a handle of a refrigerator door. In the state provided with the sensing means, the operation time of the ozone generating means and the ozone reducing means and the deodorizing time and the normal refrigerator operating time within a predetermined time unit and set the operating time of the ozone generator means If the user decides to open the door through the means, the ozone generated is rapidly reduced, and the odor in the refrigerator stops the operation of the ozone reduction means when the refrigerator door is opened through the door open / close detection means during the operation of the ozone reduction means. Providing a control method of the removal device to open and close the refrigerator door and There is an effect that can respond to changes in behavior, such as refrigerators time.

Description

Control method of bad smell removal device in refrigerator}

The present invention relates to a control method of an ozone generator provided in a refrigerator to remove odors in the refrigerator. In particular, the control of the ozone generator corresponding to a change in the operation of the refrigerator such as opening and closing of a refrigerator door and operating time of the refrigerator, etc. It is about a method.

In general, the refrigerator is for long-term storage of food and the user puts foods already cooked in an arbitrary container and stores them in a refrigerator or freezer of a refrigerator.

Therefore, no matter how well the user closes the lid of the food container, the smell of each food remains in the refrigerator. In addition, various types of food odors are often mixed into the refrigerator to create an unknown odor.

Accordingly, users leave a deodorant to remove the odor in the refrigerator of the refrigerator, the deodorant effect is deteriorated after a certain period of time due to the nature of the deodorant, the user should check or replace the deodorant with a new one every time This is a cumbersome problem.

The prior art proposed to solve this problem is a technique for removing odors in a refrigerator using an ozone generator as shown in FIG. 1.

The attached technique of FIG. 1 is an embodiment of a deodorizer in a refrigerator, and includes an evaporator 3 that cools surrounding air by a circulation process of a refrigerant, and a freezer compartment by blowing air cooled in the evaporator 3. 1) and the fan (2) forcibly circulating to the refrigerating chamber (6, 7), and the inside of the rear of the refrigerating chamber (6, 7) to deliver the cooling air forced by the fan (2) to the refrigerating chamber (6, 7) side Cold air circulation duct 10 is formed in the, and the cold air is formed for the air circulation of the inside of the refrigerating chamber (6, 7) and the cold air circulation duct 10 and is transmitted through the cold air circulation duct (10). A cold air discharge port 5 for blowing air into the refrigerating chambers 6 and 7, a humidifier (not shown) provided at a predetermined position of the refrigerating chambers 6 and 7, and generating a mist, and the cold air circulation duct ( Apart from 10), the refrigerating compartment (6, 7) is connected to both sides of the housing and inside the rear Humidification duct 11 formed in the texture, a humidification fan (9) formed in the humidifying duct 11 for forcibly circulating mist generated in the humidifier to each part of the refrigerating chamber, and the refrigerating chamber (6, 7) Humidification air is formed on the one side of the housing for the air circulation of the inside of the refrigerating chamber (6, 7) and the humidifying duct 11, the inside of the refrigerating chamber (6, 7) The humidifying circulation discharge port 5B and the humidifying circulation discharge port 5B are formed in one side of a housing inside the refrigerator compartment 6 and 7 in which the humidification circulation discharge port 5B is not formed. 11) a humidification circulation inlet port 5C for performing air circulation to the humidification circulation inlet port 5B, and located in the vicinity of the humidification fan 9 toward the humidification circulation outlet port 5B for converting oxygen in the air into ozone by an input driving voltage. Infrared rays of specific wavelength (184.9 nm) Located in the vicinity of the humidification fan 9 toward the ozone generator 100A and the humidification circulation inlet port 5C to generate the infrared rays having a specific wavelength (253.7 nm) for converting ozone into oxygen by an input driving voltage. It consists of the ozone reduction machine 100B which generate | occur | produces.

In addition, although not shown, a microcomputer is provided for controlling the operation of the ozone generator 100A and the ozone reducer 100B and the overall operation of the refrigerator. The connection between the microcomputer and the ozone generator 100A and the ozone reducer 100B is provided. Referring to Figure 2 attached to the configuration as follows.

FIG. 2 is an exemplary diagram of an electronic control configuration for controlling the ozone generating and reducing device in FIG. 1, in order to convert oxygen existing in cold air circulated through the humidifying duct by the humidification fan 9 to ozone when a voltage is input. An ozone generator 100A for generating infrared rays with a wavelength of 184.9 nm, a first inverter INV1 for inverting and outputting an input square wave control signal, and an ON operation when the output signal of the first inverter INV1 is low And ozone present in the cold air circulated through the humidification duct by the humidification fan 9 when the voltage is input, and the first relay element RLY1 connecting a path through which commercial power is supplied to the ozone generator 100A. The ozone reducer 100B generating infrared rays having a wavelength of 253.7 nm for reduction, the second inverter INV2 for inverting and outputting the square wave control signal input, and the output signal of the second inverter INV2 are low. Work The second relay element RLY2 which connects a path for supplying commercial power to the ozone reducer 100B by being operated on, and a square wave inverted to each other at a specific cycle in the first inverter INV1 and the second inverter INV2 It is composed of a microcomputer 200 for input.

Referring to the operation of the odor removing device in the refrigerator according to the present invention configured as described above, the cold air generated in the evaporator (3) and discharged by the fan (2) is a cold air circulation duct installed in the refrigerating chamber (6, 7) ( 10 is delivered to the refrigerating chambers 6 and 7 and discharged into the refrigerating chambers 6 and 7 in the direction of the arrow through the discharge port 5 formed in the cold air circulation duct 10.

Therefore, the cold air discharged through the discharge port 5 is piggybacked in the circulating air circulated through the humidifying circulation discharge port 5B and the humidifying circulation suction port 5C along the humidifying duct 11 as the humidifying fan 9 is driven. By lowering the temperature of each part of the refrigerator compartment (6, 7).

When the microcomputer 200 determines that the humidity of the refrigerating chamber has dropped below a predetermined level in the process of performing the above-described process, the humidifier 130 performs a humidification operation when it outputs a high state signal through the third port p3. do.

In addition, at any point in time to remove the odor of the refrigerating chamber (for example, for a period of three hours), a high state signal is applied to the first inverter INV1 to generate ozone. Accordingly, the first relay RLY1 is turned on and the ozone generator 100A emits infrared rays of 184.9 nm wavelength.

Oxygen present in the cold air circulated through the humidification duct by the humidification fan 9 by infrared rays of 184.9 nm wavelength emitted from the ozone generator 100A is converted into ozone and discharged through the humidifying circulation discharge port 5B. It is supplied to each part of the refrigerating chambers 6 and 7 by piggybacking on the circulating air which flows in through the humidification circulation inlet 5C.

Therefore, to remove the odor present in the refrigerating chamber and perform functions such as food sterilization.

Thereafter, driving of the ozone generator 100A is stopped to prevent the concentration of ozone in the cold air in the refrigerator being excessively increased due to the operation of the ozone generator 100A for a predetermined time (for example, about 30 minutes). For example, the high state signal applied to the first inverter INV1 is switched to the low state so that the first relay RLY1 is turned off.

When the ozone generator 100A stops operating as the first relay RLY1 is turned off, the microcomputer 200 sends a high signal to the second inverter INV2 through the second port p2. Walked. Accordingly, the second relay RLY2 is turned on and the ozone reducer 100B emits infrared rays having a wavelength of 253.7 nm.

Ozone present in the cold air circulated through the humidification duct by the humidification fan 9 by the infrared ray of 253.7 nm wavelength emitted from the ozone reducer 100B is converted into oxygen and discharged through the humidifying circulation discharge port 5B. .

The operation of the ozone reducer 100B as described above also ends after a certain period of time (for example, about 30 minutes) like the ozone generator 100A.

In the above-described embodiment, an ozone reducer 100B that emits infrared rays having a wavelength of 253.7 nm is used for the reduction of ozone. However, as another embodiment, an anion generator may be used.

However, the refrigerator having the conventional odor removing function operating as described above is open state of the refrigerator door because the method of controlling the operation of the ozone generator repeatedly performs the operation of generating and removing ozone at a certain time period. B. It ignores various control variables such as the rate of change of the driving state of the cooling fan, so when ozone is generated, the door is opened and ozone is released to the outside, or when the air is inflowed due to the opening of the door, the internal ozone concentration is reduced. Problems such as inability to properly perform such a role increases.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a refrigerator with an odor removal device to remove odors by adding ozone (O ₃ ) to the cold air circulation process in order to remove odors generated in the refrigerating chamber. The present invention provides a method of controlling an ozone generator that responds to changes in the operation of a refrigerator such as opening and closing of a refrigerator door and operating time of the refrigerator.

1 is a schematic illustration for explaining a refrigerator having an ozone generating and reducing device and the resulting duct structure

2 is an exemplary view of an electronic control configuration for controlling the ozone generating and reducing device in FIG.

Figure 3 is an illustration of an electronic control configuration for controlling the ozone generating and reducing device according to the present invention

4 is an operation flowchart showing a control process of the odor removing apparatus in the refrigerator according to the present invention.

<Description of the symbols for the main parts of the drawings>

5: cold air discharge port 5A: cold air circulation cylinder

5B: humidification circulation inlet 5C: humidification circulation inlet

6: vegetable room 7: food room

8: taste cold room 9: humidification fan

100A: ozone generator 100B: ozone reducer

INV1, 2: Inverter RLY1, 2: Relay element

200: microcomputer 300: door open detection unit

400: cooling fan motion detection unit

A feature of the present invention for achieving the above object is, in the ozone control method of the odor removing device in the refrigerator consisting of means for ozone generation and reduction, the human body detecting means for detecting the user's door open request to the handle of the refrigerator door And a door opening / closing detecting means, the first step of setting an operating time and a deodorizing time of a ozone generating means and an ozone reducing means and a normal refrigerator operating time within a predetermined time unit in a predetermined time unit; A second step of rapidly reducing the ozone generated through the human body detecting means during the operation time of the ozone generating means, and the operation time of the ozone reducing means set in the first step or Ozone when the refrigerator door is opened through the door open / close detection means during the second step There to a third step of stopping the operation of the source means.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

3 is an illustration of an electronic control configuration for controlling the ozone generating and reducing device according to the present invention according to the present invention, the oxygen present in the cold air circulated through the humidification duct by the humidification fan (9) during voltage input The ozone generator 100A which generates infrared rays of 184.9 nm wavelength to convert to ozone, the first inverter INV1 for inverting and outputting the input square wave control signal, and the output signal of the first inverter INV1 are low. In the cold state circulated through the humidification duct by the humidification fan 9 when the voltage is input and the first relay element RLY1 connecting the path for supplying commercial power to the ozone generator 100A. In order to reduce the ozone to oxygen, the ozone reducer 100B generating infrared rays having a wavelength of 253.7 nm, the second inverter INV2 for inverting and outputting an input square wave control signal, and the second inverter INV2 Exodus When the signal is in a low state, it operates on to the second relay element RLY2 and the first inverter INV1 and the second inverter INV2 that connect the paths through which commercial power is supplied to the ozone reducer 100B. It consists of a microcomputer 200 for inputting the opposite square wave as a specific period.

Such a configuration is the same as that of a refrigerator having a conventional ozone generator, but a means for detecting and transmitting an operating state of the refrigerator to the microcomputer 200 recognizes an open state of a refrigerator door and a user's door open request. The door open detector 300 and a cooling fan motion detector 400 for detecting the driving of the refrigerator cooling fan are further provided.

Referring to Figure 4 attached to the operation according to the operation method of the microcomputer in the refrigerator having the ozone generator according to the present invention configured as described above, in step S101 the microcomputer 200 is currently the ozone generator (generator) It is judged whether or not 100A is being driven.

At this time, if it is determined that the ozone generator (generator) 100A is driven in step S101, the process proceeds to step S102 to determine whether a door open request exists from the user through the door open detector 300. That is, it is to determine whether the user grabbed the handle of the refrigerator by providing a body temperature sensor such as a refrigerator door.

If it is determined in step S102 that the user has grasped the handle of the refrigerator door, the process proceeds to step S103. In step S103, the operation of the ozone generator 100A is stopped to prevent the outflow of ozone and the ozone reducer 100B. ) And the operation of the cold air circulation fan in the refrigerator at high speed through the process of step S104.

While performing the processes of steps S103 and S104, the microcomputer 200 determines in step S105 whether the door is open through the door open detection unit 300, and if it is determined that the door is not open, step S102. Proceed again to determine if the user is still holding the handle of the refrigerator door.

If it is determined in step S105 that the door is open, the process proceeds to step S106 to stop the operation of the ozone reducer 100B operated in step S103 and determines whether the refrigerator door is closed through the process of step S107.

If it is determined in step S107 that the refrigerator door is not in the closed state, the operation of the door open state is performed in the normal refrigerator, and the process returns to the process of step S106.

On the other hand, if it is determined in step S102 that there is no door open request signal, the operation of the ozone generator 100A is normally performed, and the flow proceeds to step S108. In step S108, it is determined whether the operation threshold time (for example, 21 seconds) of the ozone generator 100A has elapsed.

At this time, if it is determined in step S108 that the operation threshold time of the ozone generator 100A has not elapsed, the process returns to step S101 to perform the operation of the ozone generator 100A as it is, and if it is determined that the operation threshold time has elapsed. The flow proceeds to step S109 to end the operation of the ozone generator 100A.

Thereafter, the ozone generator operation off time was set to perform deodorization operation by the remaining ozone in the ozone generated so far, and whether the threshold time (for example, 30 minutes) of such ozone generator operation off time has elapsed is determined. Judged in S110. At this time, if it is determined in step S110 that the off threshold time of the ozone generator 100A has not elapsed, the process proceeds to step S102 to determine whether there is a door opening request by the user.

If it is determined in step S110 that the off threshold time of the ozone generator 100A has elapsed, the flow proceeds to step S111 to operate the ozone reducer 100B to prevent foods from being discolored or changed by the remaining ozone. .

Thereafter, the flow proceeds to step S112 to determine whether there is a door open request from the user through the door open detection unit 300. That is, it is to determine whether the user grasps the handle of the refrigerator by providing a body temperature sensor on the handle of the refrigerator.

If it is determined in step S112 that the user has grasped the handle of the refrigerator door, the process proceeds to step S113. In step S113, it is determined whether the door of the refrigerator is open. At this time, if it is determined in step S113 that the refrigerator door is open, the process proceeds to step S114 to stop the operation of the ozone reducer 100B. This is to prevent the radiation of 253.7nm wavelength infrared rays according to the operation of the ozone reducer (100B).

The process of step S114 continues until it is determined that the door is closed by the process of step S115. If it is determined that the door is closed in step S115, the process proceeds to step S101 to determine again whether the ozone generator is in operation. If it is determined in step S101 that the ozone generator is not operating, the process proceeds to step S110.

If it is determined in step S112 that the door open request does not exist while the ozone reducer is in operation, the flow proceeds to step S116. In step S116, it is determined whether the ozone reducer operation threshold time has elapsed.

Therefore, if it is determined in step S116 that the ozone reducer operation threshold time has elapsed, the flow proceeds to step S117 to turn off the ozone reducer, and proceeds to step S118 to determine whether the operation threshold time has elapsed while performing the normal refrigerator refrigerating operation. Done. In other words, it is determined whether it is time to drive the ozone generator.

If it is determined that the cloud point threshold time has elapsed through the process of step S118, the flow advances to step S119 to drive the ozone generator and proceeds to the step S101 again.

In addition to the operation operation according to the present invention as described above, in the present invention, although not shown in the flowchart, a step for compensating for the door is provided while the operation of the ozone generator is performed.

In addition, the operation time of the ozone generator and the reducer is varied according to the driving ratio of the cooling fan.

For example, the above process is charted for each critical time as follows.

Provided is a control method of the odor removing device in the refrigerator according to the present invention operating as described above to remove the odor by adding ozone (O ₃ ) to the cold air circulation process to remove the odor generated in the refrigerator compartment. In a refrigerator provided with an odor removing device, there is an effect that the refrigerator can cope with changes in the operation of the refrigerator such as opening and closing of the refrigerator door and operating time of the refrigerator.

Claims (2)

In the control method of the odor removing device in the refrigerator comprising means for ozone generation and reduction, The handle of the refrigerator door is provided with a human body detecting means and a door opening and closing detecting means for detecting a user's door opening request, A first step of setting an operating time and a deodorizing time of a ozone generating means and an ozone reducing means and a normal refrigerator operating time within a predetermined time unit; A second step of rapidly reducing the generated ozone if it is determined that the user desires to open the door through the human body detecting means during the operation time of the ozone generating means set in the first step; And And a third step of stopping the operation of the ozone reduction means when the refrigerator door is opened through the door open / close detection means during the operation time of the ozone reduction means set in the first step or during the second step. A control method of an odor removing device in a refrigerator. The method of claim 1, When the user opens the door during the operation time of the ozone generating means through the second step, confirms the closed operation of the door and restarts the ozone generating means during the operation time of the preset ozone generating means through the first step. Control method of the odor removing device in the refrigerator characterized in that it further comprises a re-operation step.