KR20050061155A - Method for defrosting of the utility room according to the surroundings and room temperature in the kimchi refrigerator - Google Patents

Abstract

The present invention relates to a drawer defrosting method according to the ambient temperature and the internal temperature of the kimchi refrigerator, in consideration of the ambient temperature and the internal temperature of the refrigerator provides a defrosting method according to the defrost cycle and defrosting stop, defrost completion temperature, time limit, etc. The purpose is to

In order to achieve this purpose, the Kimchi refrigerator includes a temperature sensing circuit unit configured with each storage chamber sensor for sensing a temperature of a drawer room and an external temperature sensor for sensing an ambient temperature in the refrigerator, a controller for calculating a defrost cycle and an idle time, Components such as a heater circuit portion for controlling the driving of the heater for defrosting are provided. In addition, by the component, the operation time of supplying the refrigerant to the drawer is integrated to compare the integration time with the defrost cycle according to the ambient temperature, turn off the compressor and operate the heater after a certain time or constant temperature, the rest time A method of eliminating the defrosting is provided by operating the compressor again. Therefore, according to the present invention, it is possible to effectively prevent the frost generated by the cooler piped on the upper end of the drawer room by changing the defrosting period in accordance with the attention temperature and the high internal temperature.

Description

Method for defrosting of the utility room according to the surroundings and room temperature in the kimchi refrigerator}

The present invention relates to a drawer defrosting method according to the ambient temperature and the internal temperature of the kimchi refrigerator, and more specifically, the defrost cycle and sensor temperature and heater according to the operating time of the drawer by sensing the temperature and ambient temperature in the kimchi refrigerator It is a method to remove the frost from the drawer room by the defrost limit time according to the operating time and the idle time to prevent freezing.

Kimchi refrigerator adopts the principle of a general refrigerator, but unlike a general refrigerator, it performs a function of allowing only kimchi to ripen and keep fresh. In other words, kimchi storage is configured to ripen kimchi according to the change of season and user's preference, and then to maintain the proper temperature to preserve the taste of ripe kimchi for a long time.

The general Kimchi refrigerator constructed as described above is equipped with a cooling device and a heating device. When the user selects the system as a fermentation or ripening mode, the heating device is driven to ferment the kimchi contained in the storage container, and then the cooling device is driven. By keeping the internal temperature constant, the taste and freshness of kimchi can be preserved for a long time. For this purpose, the freshness of kimchi is preserved by using a refrigerant. In general, a cooling cycle uses a compressor to make the refrigerant into a high-temperature and high-pressure gas state, and forcibly cools and liquefies the high-temperature and high-pressure refrigerant sent from the compressor by a blower fan. It is made through a condenser, an expansion valve for expanding the liquefied refrigerant, and an evaporator that absorbs and cools the heat of the surrounding air in the process of being evaporated while passing through the expansion valve.

Kimchi refrigerator having the above-mentioned cooling cycle is generally a method of storing kimchi, that is, the upper door type (chest type) and the door in the form of a drawer in which the door is attached to the upper surface by a hinge or the like according to the door opening and closing method of the kimchi refrigerator. It can be divided into a drawer type (composed of a drawer type) and a combination of the upper retractable and drawer type. A conventional kimchi refrigerator showing a double compound type is shown in FIG. 1.

1, the door 30 used to open and close the plurality of kimchi storage chambers is rotatably mounted on the upper portion of the outer case 10 by the hinge 40. The upper part of the outer case 10 is attached to the control panel 80 for setting and controlling the overall operating state of the kimchi refrigerator, the front panel 53 constituting the lower container 51 for easy withdrawal The handle 52 is attached. Of course, no compressor, condenser, evaporator, expansion valve, or the like is shown in this figure.

When the Kimchi refrigerator is configured by the conventional technology, water drops or ice drops due to frost caused by an evaporator (also referred to as a cooler) piped at an upper position appear, and such frost is removed. Due to the above phenomenon during defrosting, discoloration of food and the like stored in a drawer room occurs. In addition, defrost cycle, defrost stop, defrost completion temperature, and limit time were not considered uniformly regardless of ambient temperature and humidity.

The present invention has been made to solve the disadvantages brought about by the prior art, in consideration of the ambient temperature and high temperature of the refrigerator in consideration of the defrost cycle and defrosting stop, defrost completion temperature, time limit, etc. The purpose is to.

The present invention detects the ambient temperature and the temperature inside the high temperature in the combined kimchi refrigerator to prevent it from frost or water drop generated from the cooler piped on the top, compared to the integration time according to the drawer room operation time defrost cycle and defrosting stop Provide defrosting method according to defrost completion temperature, limit time, etc.

To this end, in the Kimchi refrigerator, the Kimchi refrigerator of the combined direct cooling method having at least one kimchi storage room and a drawer room, is installed at a specific position of the temperature sensor and the kimchi refrigerator to detect the temperature of the storage room to detect the ambient temperature A temperature sensing circuit unit including an external temperature sensor for transmitting the sensed temperature information to a controller; A compressor control circuit unit controlling a compressor to provide refrigerant to the kimchi storage chamber and a drawer room, and a heater circuit unit controlling a heater for generating heat during defrosting and removing frost generated on the cooler surface according to a command of the controller; The first time that is the defrosting execution cycle and the second time that sets the operating limit of the heater by the external temperature sensor and the temperature sensor of the storage compartment, the defrosting time for turning off the heater and restarting the compressor after a certain time and the temperature of the drawer room. When a constant temperature is reached, a control unit for determining a set temperature for turning off the heater is provided.

In the drawer room defrosting method according to the ambient temperature and the internal temperature of the kimchi refrigerator using the kimchi refrigerator having such components, the control unit receives information of the ambient temperature and humidity detected from an external temperature sensor installed at a specific location inside the refrigerator. Calculating and setting the first time, the second time, the set temperature, and the defrost time, and integrating the operating time of the drawer room by driving the compressor; Comparing the integration time with a first time set for operation of the refrigerator as the operation time is accumulated; If the integration time does not reach the first time set in the comparison step, the control unit continues to operate the drawer room, and if the integration time reaches the first time, the control unit turns off the compressor and commands the heater circuit unit to operate the heater. Steps; The control unit detects the temperature of the drawer room through a temperature sensor provided in the drawer room and determines whether the set temperature set for maintaining the temperature of the drawer room is reached or whether the second time limiting the operating time of the heater is reached; If one of the set temperature or the second time is reached first, the control unit comprises the step of turning off the heater and restarting the compressor after a certain defrost stop time has elapsed.

Therefore, by this method, it is possible to effectively prevent the frost generated by the cooler piped on the upper end of the drawer room by changing the defrosting period in accordance with the attention temperature and high internal temperature.

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

Figure 2 is a circuit block diagram for removing frost generated in the drawer room according to the present invention, the control block 200, temperature sensing circuit unit 210, step motor drive circuit unit 220, compressor control Components such as the circuit unit 230 and the heater circuit unit 260 is provided. Referring to the functions and roles of the components of the block circuit diagram having such a structure as follows.

The control unit 200 includes a microcomputer to perform the function required in the Kimchi refrigerator and is connected to the other components mentioned above to transmit a command or receive information to process it. That is, the state of temperature change is detected by each of the detection sensors 211, 212, 213 provided in the temperature sensing circuit unit 210, in order to sense the temperature of the left, right, and drawer rooms. In addition, the external temperature sensor 214 is provided to implement the present invention, which is installed on the upper portion of the Kimchi refrigerator and detects the external temperature and humidity and transmits it to the controller 200. Therefore, the defrost cycle (first time), defrost stop, defrost completion temperature (set temperature), limit time (second time), etc. are calculated by comparing the temperature of the drawer room, the inside of the Kimchi refrigerator, with the sensed outside temperature.

Therefore, the control unit 200 performs a command to turn off the compressor 250 and operate the heater 261 for a predetermined time according to the defrost cycle, the defrost stop, the defrost completion temperature, the limit time set according to the ambient temperature.

The temperature sensing circuit unit 210 includes an L sensor 211 for sensing the temperature of the left side, an R sensor 212 for sensing the temperature of the right side, and a U sensor 213 for sensing the temperature of the drawer, and sensing It serves to transmit the temperature information to the control unit 200. In addition, an external temperature sensor 214 for detecting an external temperature is provided on the upper surface of the kimchi refrigerator.

The step motor driving circuit unit 220 drives the step motor 240 according to the signal received from the controller to move to the corresponding step. Therefore, the coolant generated from the compressor 250 flows into the corresponding room (left side, right side, drawer room) and cooling is performed. Of course, the present invention is to be applied to the step motor for easy understanding, but also applicable to the solenoid valve to perform the same function.

The compressor control circuit unit 230 controls the compressor 250 to provide a refrigerant to the left chamber 241, the right chamber 242, and the drawer chamber 243.

The heater circuit unit 260 controls the heater 261 according to the command of the controller 200 to generate heat at the time of defrosting and to remove frost generated on the cooler surface. In addition, the heater circuit unit 260 is provided with a defrost timer (not shown) for automatically performing defrost using a heater. The defrost timer may be provided in the control unit 200, and may be performed by receiving a command from the control unit 200 by leaving only the defrost timer and performing a function of integrating the operation time of the compressor 250.

Figure 3 is a flow chart showing a process of removing the frost generated in the drawer room according to the ambient temperature in accordance with the present invention, the external temperature sensor 214 and the sensor of the drawer room 243 for detecting the ambient temperature and high temperature inside By the first time (defrost cycle) which is the defrost execution cycle according to the difference between the external temperature and the high temperature inside, the second time (limit time) for setting the operating limit of the heater 261, the heater is turned off and after a predetermined time passes the compressor 250 After the defrosting stop time (defrost stop) and the temperature of the drawer room 243 reaches a certain temperature, the set temperature (defrost completion temperature) for turning off the heater is determined. It is the process of eliminating the defrosting phenomenon by allowing the compressor to operate again at a certain time or a certain temperature. The process of eliminating this defrost is as follows.

The control unit 200 receives information of the ambient temperature and humidity detected from the external temperature sensor 214 installed at a specific location in the store (step S300).

When the ambient temperature information is transmitted, the control unit 200 determines the first time, the second time, the set temperature, the defrost stop time, and transmits the corresponding command to each component (step S310). Therefore, the compressor control circuit unit 230 drives the compressor 250 to provide the refrigerant to the drawer room 243.

As the refrigerant is supplied to the cooler piped in the drawer room 243, the control unit 200 starts the operation time of the drawer room 243 (that is, the refrigerant flow path of the drawer room is opened and the compressor 250 is driven from the point of supply). State) is integrated (step S320).

As the operation time is accumulated, the controller 200 compares the first time (that is, the time for providing the coolant to the drawer room 243) determined according to the ambient temperature (step S330).

If the integration time does not reach the first time set in the comparison step, the control unit 200 continues to operate the drawer room 243, and if the integration time reaches the set time (first time), the control unit 200 The compressor 250 is turned off and the heater circuit unit 260 is instructed to operate the heater 261 (step S340).

Heat is released when the heater 261 is operated, so that the frost generated in the cooler of the drawer room 243 is evaporated and removed. Therefore, in order to ensure that the heater 261 is performed at an appropriate temperature, a limit time of defrosting operation is provided. That is, it is set how long the heater 261 will operate, which is called a second time.

The control unit 200 detects the temperature of the drawer room 243 through the U sensor 213 provided in the drawer room 243 to determine whether the set temperature is reached (step S350. Since the heater 261 needs to continue to operate, it may be determined that the second time reaching the operating time of the heater 261 is limited.

Therefore, when the dual set temperature or the second time reaches first, the control unit 200 turns off the heater 261 and gives a constant defrosting stop time to restart the compressor 250 after the defrosting stop time has elapsed (step S360). ).

That is, residual water (which may freeze when the compressor is started) and debris (residue) of ice may be removed by using the heat remaining in the heater 261 after the heater 261 is turned off. Therefore, the compressor 250 is restarted after the defrosting time has elapsed. Of course, as described above, the defrosting stop time is a value determined by the controller 200 according to the ambient temperature and the internal temperature of the refrigerator.

As mentioned above, the present invention has been described in detail with reference to the accompanying embodiments and drawings, but the present invention is not limited to the specific embodiments, and those skilled in the art or acquiring general knowledge are provided with the contents of the present invention. It will be understood that numerous modifications and variations are possible without departing from the scope of the invention. Accordingly, the protection scope of the present invention should be defined based on the appended claims.

According to the present invention, it is possible to prevent the frost generated by the cooler piped on the upper end of the drawer room by changing the defrosting period in accordance with the attention temperature and high internal temperature.

1 is a cross-sectional view showing a partial cross-sectional view of a conventional kimchi refrigerator having a conventional drawer room and a plurality of kimchi storage room.

2 is a circuit block diagram for removing frost generated in the drawer room according to the ambient temperature according to the present invention.

Figure 3 is a flow chart showing a process of removing the frost generated in the drawer room according to the ambient temperature according to the present invention.

Claims (1)

A temperature sensor for detecting the temperature of the storage compartment and an external temperature sensor installed at a specific position of the kimchi refrigerator to detect the ambient temperature, and a temperature sensing circuit unit for transmitting the detected temperature information to the controller; A compressor control circuit unit controlling a compressor to provide refrigerant to the kimchi storage compartment and a drawer room, a heater circuit unit controlling a heater for generating heat during defrosting and removing frost generated on the surface of the cooler according to a command of the controller; By the external temperature sensor and the temperature sensor of the storage compartment, the first time that is the defrost execution cycle, the second time that sets the operating limit of the heater, the defrost pause time when the heater is turned off and the compressor is restarted after a certain time, and the temperature of the drawer room are In the kimchi refrigerator of the combined direct cooling method having a control unit for setting a set temperature for turning off the heater when a certain temperature is reached, at least one kimchi storage compartment and a drawer room, The control unit receives the information of the ambient temperature and humidity detected from the external temperature sensor installed at a specific location in the room, calculates the first time, the second time, the set temperature, the defrost stop time, and operates the compressor to operate the drawer room. Integrating time, As the operation time is integrated, the control unit compares the integration time with the first time set for the operation of the refrigerator, If the integration time does not reach the first time set in the comparison step, the control unit continues to operate the drawer room, and if the integration time reaches the first time, the control unit turns off the compressor and commands the heater circuit unit to operate the heater. step, The control unit detects the temperature of the drawer room through a temperature sensor provided in the drawer room and determines whether the set temperature set for maintaining the temperature of the drawer room has reached or the second time limiting the operating time of the heater, If one of the set temperature or the second time reaches first, the control unit turns off the heater and restarts the compressor after a certain defrosting idle time has elapsed. Drawer room defrosting method according to the ambient temperature and high temperature of the kimchi refrigerator comprising a.