KR20050060612A - Method for controlling refrigerant distribution in the kimchi refrigerator - Google Patents

Abstract

The present invention relates to a method for controlling the refrigerant distribution of a kimchi refrigerator, and its object is to provide a method for minimizing the difference in cooling capacity for each room when two or more rooms are operated at the same time.

In order to achieve this purpose, the Kimchi refrigerator has a control unit that controls the function of the Kimchi refrigerator, sets the operation time and operation sequence for each room, an angle sensor for detecting the temperature of each room, and an external temperature sensing for detecting the ambient temperature in the room. A temperature sensing circuit portion configured with a sensor and a step motor driving circuit portion for controlling a refrigerant supply by turning on and off a valve of a corresponding room are provided. In addition, when two or more rooms are operated at the same time by the above components, it compares the externally sensed temperature with the internal temperature and sets the operation order and the period of operation time of each room. By alternately supplying refrigerant, a method of minimizing the cooling temperature deviation of each room is provided.

 Therefore, according to this method, when a plurality of rooms are operating at the same time, the refrigerant is circulated alternately at a constant rate according to the operation order and the operating time of each room, thereby minimizing the temperature deviation for each room.

Description

Refrigerant distribution control method of Kimchi refrigerator {Method for controlling refrigerant distribution in the kimchi refrigerator}

The present invention relates to a method for controlling the distribution of refrigerant in a kimchi refrigerator, and more particularly, in order to reduce the difference in refrigerant circulation when operating a plurality of rooms simultaneously in a step valve of a kimchi refrigerator having at least two rooms. It alternately warms (hereinafter referred to as stirring) to a method of distributing a constant proportion of the refrigerant.

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 refrigerator is configured to ripen kimchi according to the change of season and user's preference, and then 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 a plurality of kimchi storage rooms (or represented by rooms) is rotatably mounted on the upper case 10 by the hinge 40. have. 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. In addition, the step valve for distributing the low-temperature, high-pressure refrigerant passing through the condenser to the evaporator piped to each storage chamber is not shown, but those skilled in the art can easily grasp the conventional structure will not need any further technology.

When the kimchi refrigerator is configured by the conventional technology, a difference in refrigerant circulation occurs due to the pressure difference between the two rooms when the two or more rooms are open at the same time. In this case, the cooling degree of each room is also different so that efficient cooling is not achieved.

SUMMARY OF THE INVENTION The present invention has been made to solve the disadvantages posed by the prior art, and has as its object to provide a method for minimizing the difference in cooling capacity for each room when two or more rooms are operated simultaneously open. have.

The present invention alternates at a constant rate in order to minimize the difference in refrigerant circulation generated when two or more rooms are operated in an open state at the same time in a kimchi refrigerator equipped with a plurality of kimchi storage room (hereinafter referred to as a room) It provides a method of controlling the distribution of refrigerant by opening.

To this end, the Kimchi refrigerator includes a sensor for detecting at least two room temperatures and an external temperature sensor installed at a specific location in the chamber to detect ambient temperature, and a temperature sensing circuit unit for transmitting the detected temperature information to the controller. Wow; A control unit which receives temperature information from the external temperature sensor and sets an operation order and an operation time for each room according to the cooling capacity of each room by comparing with the room temperature in the refrigerator; Step motor driving circuit unit for driving the step motor according to the signal received from the control unit to control the refrigerant supply by turning on and off the valve of the room.

Refrigerant distribution control method of the kimchi refrigerator using the kimchi refrigerator having such a component, the control unit receives the ambient temperature and room temperature from the sensor for sensing the ambient temperature and the room temperature sensor for sensing the ambient temperature in the interior Wow; As the information of the ambient temperature and the temperature of each room is determined, a control unit comparing the temperature information to set room-specific operation order and operation time according to the cooling capacity of each room; When the operation sequence and the operation time are set, the controller is in the stirring action inrush mode in which the refrigerant is circulated by alternately turning on the step valve of the room when the controller corresponds to the stirring action entering condition; As the room corresponds to the stirring action inrush condition in the stirring action inrush mode, the control unit includes a step of alternating each room at a constant rate in accordance with the operation sequence and the operating time to supply a refrigerant by opening a step valve.

Accordingly, when a plurality of rooms are operated simultaneously by this method, the refrigerant is circulated in alternating ratios according to the operation order and the operation time of each room, thereby minimizing the temperature deviation for each room.

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

2 is a circuit block diagram for alternately controlling refrigerant distribution in a predetermined ratio in each room by using a stepping motor according to the present invention. The circuit block diagram includes a control unit 200, a temperature sensing circuit unit 210, and a step motor driving. Components such as the circuit unit 220 and the comp control circuit unit 230 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 detects the state of temperature change by each of the sensing sensors 211, 212, and 213 provided in the temperature sensing circuit unit 210, and controls the step motor driving circuit unit 220 and the comp control circuit unit 230. Send the command. That is, after the initial power is applied, the temperature of each room is read after a predetermined time has elapsed, and the step position of the stepping motor is adjusted according to the on / off conditions of each room. In addition, the temperature information is received from the external temperature sensor 214 for detecting the ambient temperature in the refrigerator and compared with the room temperature in the refrigerator to set the operation order and operating time of each room.

The temperature sensing circuit unit 210 senses an L sensor 211 for sensing a temperature of the first room 241, an R sensor 212 for detecting a temperature of the second room 242, and a temperature of a third room. And a U sensor 213 for transmitting the sensed temperature information to the control unit 200. Of course, in the case of the combined refrigerator, it is conceivable to configure the first room 241 and the second room 242 as a kimchi storage room, and the third room 243 as a drawer room for storing vegetables or fruits. In addition, an external temperature sensor 214 for detecting an external temperature is provided at a specific portion of the kimchi refrigerator.

The step motor driving circuit unit 220 drives the step motor 240 according to a signal received from the controller to turn on / off the valve of the room to control the supply of refrigerant to the evaporator piped to the room. Therefore, the cooling of the room is achieved by circulating the refrigerant in the evaporator.

The comp control circuit unit 230 controls the compressor 250 to provide a refrigerant to the first room 241, the second room 242, and the third room 243.

Figure 3 is a flow chart showing a process of controlling the refrigerant distribution alternately at a constant rate in each room by using a stepping motor according to the present invention, when the two or more rooms are operated at the same time by comparing the temperature sensed from the outside with the internal temperature It is the process of minimizing the cooling temperature deviation of each room by setting the operation sequence of the room and the period of the operation time and performing the stirring action alternately according to the operation sequence and the period of the operation time. The agitation process is described as follows.

The control unit 200 is the ambient temperature detected from the temperature sensor (211, 212, 213) installed in the external temperature sensor 214 and the rooms (241, 242, 243) installed in a specific location in the interior of the room information Received (step S300).

As the information of the ambient temperature and the temperature of each room is grasped, the control unit 200 compares the temperature information and sets the operation order and operation time for each room according to the cooling capacity of each room (step S310).

As the operation sequence and operation time are set, the control unit 200 is in the stirring operation intrusion mode (step 320). That is, when the following conditions occur, the control unit 200 enters into the stirring action.

1) When two rooms with different capacity are turned on at the same time

2) When two rooms with the same capacity zone and one or more rooms with different capacity zones are turned on at the same time

3) All rooms in the room are turned on at the same time

4) Applicable when the other room is on condition while the room is operating under the above conditions.

5) When the room temperature is at room temperature similar to the ambient temperature when the initial power is turned on.

As the room corresponds to the stirring action inrush condition in the stirring action inrush mode, the control unit 200 alternately opens the step valves at a constant rate according to the operation sequence and the operation time to supply the refrigerant (step S340). .

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, when a plurality of rooms operate simultaneously, the refrigerant is circulated alternately at a constant rate according to the operation order and the operation time of each room, thereby minimizing the temperature deviation for each room.

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 controlling refrigerant distribution alternately at a constant rate in each room by using a stepping motor according to the present invention.

Figure 3 is a flow chart showing a process of controlling the refrigerant distribution alternately at a constant rate in each room using a stepping motor according to the present invention.

Claims (2)

A temperature sensing circuit unit having a sensor for sensing at least two or more room temperatures and an external temperature sensor installed at a specific location in the chamber for sensing an ambient temperature, and transmitting the sensed temperature information to a controller; A control unit which receives the temperature information from the external temperature sensor and sets an operation order and an operation time for each room according to the cooling capacity of each room by comparing with the room temperature in the refrigerator; In the Kimchi refrigerator having a step motor drive circuit unit for controlling the refrigerant supply by driving the step motor in accordance with the signal received from the control unit to turn on and off the valve of the room, the control unit detects the ambient temperature in the interior and the external temperature sensor Receiving the ambient temperature and room temperature from the sensor for detecting the room temperature, As the information of the ambient temperature and the temperature of each room is grasped, the control unit compares the temperature information to set the operation order and operating time for each room according to the cooling capacity of each room, As the operation sequence and the operation time are set, if the controller corresponds to the stirring action entry conditions, the step in the stirring action inrush mode to alternately turn on the step valve of the room to circulate the refrigerant, As the room corresponds to the stirring action inrush condition in the stirring action inrush mode, the control unit alternately supplies each room at a constant rate according to the operation sequence and the operation time to supply a refrigerant by opening a step valve Refrigerant distribution control method of the kimchi refrigerator comprising a. The method of claim 1, In the stirring action intrusion mode, the stirring action entry conditions, 1) when two rooms with different capacity are turned on at the same time, 2) when two rooms with the same capacity zone and one or more rooms with different capacity zones are turned on at the same time, 3) All rooms in the room are turned on at the same time, 4) If the other room is on condition while the room is operating under the above conditions, 5) When the room temperature is at room temperature similar to the ambient temperature when the initial power is turned on. Refrigerant distribution control method of the kimchi refrigerator.