KR101429599B1 - Method for controlling of open showcase for both refrigeration and lunchbox - Google Patents

Abstract

Disclosed is an open showcase control apparatus and method for a combined refrigerator / lunch box in which one open showcase is used for refrigeration only, refrigerator / lunch box, and individual shelves can be controlled when a lunch box is used.
A disclosed refrigerator / lunch compartment open showcase control device includes: a refrigerator for generating cold air for refrigeration; Heating means for generating a heat source for a lunch box; A function selecting unit for selecting the refrigerator or refrigerator / lunch box function and selecting a shelf to be operated for individual control of the shelf when the refrigerator / lunch box shelf is used; A compartment shelf detecting unit for detecting a simultaneous use state of the refrigerator and the lunch box; And a control unit for controlling the refrigerator or the refrigerator / lunch box operation by operating the refrigerator and the heating unit according to the selection function of the function selection unit and the detection result of the compartment shelf of the compartment shelf sensing unit.

Description

[0001] The present invention relates to an open showcase control method for a refrigerator /

The present invention relates to an open showcase for both refrigerated and lunch boxes. More particularly, the present invention relates to an open showcase for refrigeration / lunch boxes, and more particularly to a refrigerator / And an open showcase control method.

In general, Open Showcase is installed to store and sell products in department store, large discount store, convenience store, supermarket, etc. in order to display the products freshly. So that the purchaser can increase the desire to purchase the product.

Such an open showcase utilizes a refrigeration cycle in which a refrigerating operation is repeated by continuously repeating changes in state of expansion (endothermic) and compression (heat radiation).

In the case of open showcase, it is divided into various forms according to the purpose. That is, it is roughly divided into flat face type, multistage face type, and open type depending on objects to be displayed such as vegetables, drinks, instant foods such as kimbab and lunch boxes.

In the open showcase, the front of which is opened, a cooling device for performing a refrigeration cycle and a machine room in which various electrical products are installed are provided at the lower part of the main body case opened at the front. A duct for supplying cool air to the wall and the cold air discharge opening is formed while circulating, and a shelf for displaying merchandise is provided inside the case.

Conventional open showcase having such a configuration is disclosed in Korean Utility Model Registration Utility Model Registration No. 20-0441200 (published on July 31, 2008) (design name: apparatus for attaching a price tag for a shelf for a showcase) Lt; / RTI >

The present invention provides a price tag attaching apparatus for a shelf for a showcase which is simple in structure and simple to assemble but firmly fixed in a price tag. It is an object of the present invention to provide a price tag attaching apparatus for a showcase, It is possible to prevent an unnecessary structure other than the price tag from being exposed to the outside, and the appearance of the showcase is further improved.

1. Registration of the Korean Intellectual Property Office Registration No. 20-0441200 (Name of Design: Apparatus for attaching a price tag for shelves for showcase)

However, the above-described prior art has a drawback in that it is suitable for products requiring cold air, and is not suitable for display and storage of products requiring warm storage.

For example, when a kimbap, a lunch box, or a hamburger is displayed on a showcase such as a conventional art, it is inconvenient to use another heating device (microwave oven, etc.) when consuming it.

In addition, in order to store warm beverages and the like, a dedicated warm-ware is generally used. In this case, a dedicated warm-ware for warm beverages and a showcase for storing foods requiring cold are separately installed. There is a disadvantage that the display space of the product to be sold becomes narrow and the economic burden is increased due to the purchase of the two products.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-described problems occurring in the prior art and the related art problems caused by the simultaneous purchase of a showcase and a warm-

SUMMARY OF THE INVENTION It is an object of the present invention to provide an open showcase control method for a refrigerator / lunch box that allows one open showcase to be used for refrigeration only or refrigerator / lunch box.

It is another object of the present invention to provide an open showcase control method for a refrigerator / lunch box that allows each shelf to be individually controlled when a refrigerator / lunch box is used and at the same time saves power.

Another object of the present invention is to provide an open showcase control method for both the refrigerator and the lunch box by displaying the operating state of the open showcase and allowing the user to easily recognize the operating state of the open showcase for the refrigerator only or the refrigerator / .

Another object of the present invention is to provide a refrigerator / lunch compartment open showcase control method that displays a shelf used when using a refrigerator / lunch box open showcase and provides convenience to a user at the time of displaying a product.

According to an aspect of the present invention, there is provided an open showcase controller for a refrigerator /

A refrigerator for generating cold air for refrigeration;

Heating means for generating a heat source for a lunch box;

A function selecting unit for selecting the refrigerator or refrigerator / lunch box function and selecting a shelf to be operated for individual control of the shelf when the refrigerator / lunch box shelf is used;

A compartment shelf detecting unit for detecting a simultaneous use state of the refrigerator and the lunch box;

And a control unit for controlling the refrigerator or the refrigerator / lunch box operation by operating the refrigerator and the heating unit according to the selection function of the function selection unit and the detection result of the compartment shelf of the compartment shelf sensing unit.

In addition, the open showcase controller for both refrigerator /

And a heater driving unit for driving the heating unit under the control of the control unit.

In addition, the open showcase controller for both refrigerator /

A temperature detection unit for detecting a refrigeration temperature during refrigeration and providing the refrigeration temperature to the control unit, detecting a refrigeration and lunch box temperature during refrigeration / lunch box operation and providing the refrigerated and lunch box temperature to the control unit;

And an outside temperature sensing unit for sensing the outside temperature and providing the sensed temperature to the control unit.

In addition, the open showcase controller for both refrigerator /

And a display unit for visually displaying the operation status of the open showcase under the control of the control unit and displaying only the shelves operating during refrigeration / lunch box operation.

In this case,

The refrigerator is driven, and the heating means is driven when the refrigerator / lunch box is selected or the compartment shelf is selected. When the user selects the operation target shelf, only the heater provided on the operation shelf in the heating means is selectively operated.

In this case,

And controls the operation display of the operation target shelf when the user selects the operation target shelf in the display of the refrigerator / lunch box.

In this case,

And the rear heater is controlled according to the outside air temperature sensed by the outside air temperature sensing unit to compensate the temperature of the entire lunch box shelf.

According to another aspect of the present invention, there is provided an open showcase control method for a refrigerator /

(a) searching for a function selected by the user, controlling the display of the refrigeration operation when the refrigeration operation is selected, detecting the refrigeration temperature after driving the refrigeration unit, and controlling the refrigeration temperature by comparing with the set temperature;

(b) determining whether the individual lunch box is selected when the refrigerator / lunch box is selected at the time of the function search of the step (a);

(c) if the individual lunch is not selected as a result of the determination in the step (b), the display of the refrigerator / lunch box operation is controlled and the refrigerator temperature and the outdoor temperature And controlling the refrigerating temperature and the lunch box temperature.

In addition, the open showcase control method for a cold /

(d) if the individual lunch is selected as a result of the determination in the step (c), the display of the operation state of the selected shelf is controlled and only the heating means of the refrigerator and the operation target shelf is driven, And controlling the refrigerating temperature and the lunch box temperature of the individual shelves according to the outdoor air temperature.

In the above step (a)

(a-1) controlling refrigeration display and driving the refrigerator to perform refrigeration;

(a-2) detecting a refrigerating temperature;

(a-3) controlling the refrigerating temperature by comparing the detected refrigerating temperature with the preset refrigerating set temperature, and controlling the solenoid valve to control the flow of the refrigerating based on whether the refrigerating set temperature is large or small.

In the above step (c)

(c-1) controlling refrigeration / lunch display, simultaneously performing a refrigerator and a heating means to perform a refrigerator / lunch box function;

(c-2) detecting refrigeration temperature, lunch temperature, and outdoor temperature;

(c-3) controlling the refrigeration temperature according to the detected refrigeration temperature, and controlling the driving of the heating means and the rear heater according to the detected lunch box temperature and the outside air temperature to control the lunch box temperature.

Wherein the step (d)

(d-1) controlling the refrigeration / lunch box display and displaying the operation state of the selected operation target shelf;

(d-2) driving the refrigerating unit and driving the heating means of the operation subject shelf so as to control only the operation subject shelf with the lunch box function;

(d-3) detecting a refrigeration temperature, a temperature of the operation target shelf, and an outside air temperature;

(d-4) controlling refrigeration according to the detected refrigeration temperature, and controlling the driving of the heating means and the rear heater according to the detected temperature of the shelf and the outside air temperature to control the lunch box temperature .

According to the present invention, there is an advantage that one open showcase can be simultaneously used for refrigeration and refrigerator / lunch box.

In addition, according to the present invention, when a lunch box is used, each shelf can be individually controlled and the power saving function can be performed.

Also, according to the present invention, there is an advantage that the user can easily recognize the operating state of the open showcase by displaying the current operating state of the open showcase for both refrigerated and refrigerated / lunch boxes.

Further, according to the present invention, there is also an advantage that a shelf used when using a refrigerator / lunch box is displayed to provide convenience to a user when displaying a product.

1 is a perspective view of a refrigerator / lunch compartment open showcase to which the present invention is applied,
Fig. 2 is a side sectional view of the refrigerator / lunch compartment open showcase of Fig. 1,
FIG. 3 is a block diagram of an open showcase control device for both refrigerator / lunch box according to the present invention,
FIG. 4 is a flowchart illustrating a method of controlling an open showcase for both cold storage and lunch boxes according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a perspective view of a refrigerator / lunch compartment open showcase to which the present invention is applied, and FIG. 2 is a side sectional view of a refrigerator / lunch compartment open showcase of FIG.

As shown in FIGS. 1 and 2, an open showcase 100 to which the present invention for displaying and storing goods is applied includes a body case 110 having a box-like shape, which is open at the front, A refrigerator 120 for supplying cold air with a device for performing a normal refrigeration cycle and a variety of electrical components installed in the lower portion of the main body case 110, A refrigerating shelf 140 of a refrigerating compartment which is detachably connected to both sides of the inside of the main body case 110 by being detached and connected to the main body case 110, A compartment shelf 150 for partially cutting off the passage of the duct 130 to supply only a part of the cold air to the upper part and circulating the remaining cold air to the lower part, It is composed of 160.

Here, the refrigerator shelf 140 and the heating shelf 160 are composed of a plurality of units, and a heating unit is provided in the heating shelf 160, and the heating unit is preferably a hot-wire heater. Particularly, the heating shelf 160 may be constituted by a heating shelf as a whole, or only a part of the shelves as a heating shelf, if necessary.

Preferably, the compartment shelf 150 is provided with a plurality of through holes for circulating the cool air introduced through the ducts between the upper surface and the lower surface into the refrigerating compartment and allowing only a part of the refrigerating air to pass through the upper compartment (lunch compartment).

The refrigerator / lunch compartment open showcase to which the present invention is applied is entirely used for refrigeration (0 to 10 ° C), the lower part is used for refrigeration, and the upper part is used for lunch box shelf (16 ° C to 20 ° C) use.

In addition, when the user operates the lunch box dedicated shelf, when the user selects the operation target shelf, only the heating means provided on the operation target shelf is driven to generate a heat source, .

In addition, when it is used for refrigerated / lunchboxes, it controls the blowing fan (RPM speed control) for discharging the cold air in the refrigerating chamber according to the ambient temperature, thereby preventing cold air loss and energy loss due to excessive air discharge in winter, The amount of the generated food is increased, thereby preventing the article placed on the lunch box from being damaged.

As is well known, the present invention is advantageous in that a refrigerator-dedicated function and a refrigerator / lunchbox function can be simultaneously used in one open showcase.

Hereinafter, the detailed operation of the refrigerator and the refrigerator / lunch box shelf and the partial warming-up of the lunch box shelf (only the selected shelf) will be described in detail below.

FIG. 3 is a block diagram of a refrigerator / lunch compartment open showcase control device according to the present invention, which includes a function selector 101, a memory 102, a power source 103, a controller 104, a refrigerator 120, A temperature sensing unit 106, a display unit 107, a compartment shelf sensing unit 108, an outside temperature sensing unit 109, a heating unit, and the like.

The refrigerating unit 120 serves to generate cold air for refrigeration, and includes an evaporator, a blowing fan, a solenoid valve, and the like for a normal refrigeration cycle.

The heating means serves to generate a heat source for the lunch box function, and it is preferable to use a heat wire heater or other heater.

The function selection unit 101 is a key input device for selecting a function for selecting refrigeration or selecting a refrigerator / lunch box operation and a shelf for selecting a shelf for a lunch box function. The function selection unit 101 includes a selection switch for selecting a refrigerator, a shelf selection key for selecting an individual shelf, a refrigerator / lunch box selection switch for selecting a refrigerator / lunch box function, a temperature setting Keys, and the like.

The power supply unit 103 not only supplies driving power to the control unit 104 but also supplies driving power to the respective components requiring power supply. The memory 102 controls the refrigeration control, the lunch control, the lunch control, and the like And a control program for storing the program.

The heater driving unit 105 drives the heating means under the control of the control unit 104 and drives a rear heater provided in the duct.

The temperature sensing unit 106 detects the refrigeration temperature of the refrigerating compartment, the shelf temperature of the lunch compartment room during the lunch compartment function, and provides the detected temperature to the control unit 104. The temperature sensing unit 106 preferably uses a temperature sensor for temperature sensing and is preferably installed at a position where the refrigerator temperature or the lunch temperature can be detected optimally. In addition, it is desirable to provide a temperature sensor on each shelf in order to detect the temperature of each shelf and the surrounding space when controlling individual shelves.

The outside temperature sensing unit 109 detects the outside air temperature and provides the detected outside temperature to the control unit 104. The control unit 104 controls the driving of the rear heater provided in the duct according to the outside air temperature, And serves to control temperature compensation so that the temperature is maintained at a desired temperature. The outdoor temperature is also used to control the amount of cold air in summer when refrigerated / lunchbox is used.

The display unit 107 visually displays the operation status of the refrigerator-dedicated refrigerator / lunch compartment open showcase under the control of the control unit 104, and displays only the shelves operating during the lunch box operation. The display unit 107 preferably includes a light emitting diode. The display unit 107 is provided near an indicator for distinguishing refrigeration from refrigerator / lunch box and lunch box shelf, and displays refrigeration, refrigerator / lunch box operation status, It is preferable to indicate the shelf which operates at the time.

The controller 104 selectively operates the refrigerating unit 120, the heating unit, and the rear heater according to the functions of the refrigerator, the refrigerator, and the lunch box selected by the function selecting unit 101. The controller 104 may be a microcomputer, A controller, and a central processing unit.

The controller 104 drives the refrigerator 120 to refrigerate the refrigerator, drives the heating unit and the rear heater for the lunch function, and when the user selects the operation target shelf in the lunch box function, So that the partial warming is performed.

In addition, the control unit 104 controls the display of the refrigeration operation during the refrigerating operation, the display of the refrigeration / lunchbox operation during the refrigeration / lunchbox operation, and the operation display of the operation shelf when the user selects the operation shelf.

In the refrigerator / lunch compartment open showcase control apparatus according to the present invention, when the user selects the refrigerator / lunch compartment open showcase for refrigeration only, the control unit 104 controls the refrigerator / lunch compartment open showcase by refrigeration.

For example, the control unit 104 lights the light emitting diodes indicating the refrigeration operation through the display unit 107 so that the user can recognize that the current refrigerator / lunch compartment open showcase is operating in a refrigerated state, and simultaneously the heating means is turned off Only the cold storage unit 120 is activated to generate cold air.

When the refrigerator 120 starts to generate cool air, the temperature sensor of the temperature sensor 106 detects the refrigerator temperature and transmits the detected temperature to the controller 104. The controller 104 controls the temperature And the user compares the set temperature at the time of refrigeration set by the user through the function selection unit 101, and controls the refrigerating operation by on / off controlling the solenoid valve for controlling the flow of the refrigerant according to whether the temperature is large or small. Here, the method of controlling the refrigeration operation by comparing the detected temperature and the set temperature is the same as the method of controlling the temperature appropriately in a general open showcase, and therefore, a detailed description thereof will be omitted.

As is well known, when the open showcase for both refrigerated and packed lunches is operated by refrigeration, the user can always recognize the operation mode of the open showcase for refrigerated / lunch boxes through the display unit 107, It is possible to prevent mistakes in displaying merchandise.

On the other hand, when the user inserts the partition shelf 150 in a predetermined position in order to use the refrigerator / lunch compartment open showcase as a refrigerator / lunch box, the compartment shelf sensing unit 108 senses this and transmits the sensed result to the control unit 104. Here, the partitioning shelf sensing unit 108 may use various sensors capable of sensing the compartment shelf 150, such as a proximity sensor and a touch sensor.

When the insertion of the compartment shelf 150 is detected by the compartment shelf sensing unit 108, the control unit 104 recognizes the open showcase serving as both the refrigerator / lunch box and the lunch box simultaneously as the refrigerated / The light emitting diodes indicating the lunch box operation are turned on to notify the user that the current open / close lunch box combination is being operated in the state of simultaneous operation of refrigerated / At this time, the user can select only the shelf to be used among the shelves used as lunch boxes through the function selection unit 101. [

In the case of a lunch box, if the shelf to be used is not selected, the heater driving unit 105 is driven so that the heater of all the heating means is operated All are driven. Each of the shelves is provided with a heating wire heater as a heating means.

The heating means operates to generate a heat source, and the product displayed on the shelf is maintained in a warm state by the generated heat source.

When the heat source of the heating means is driven to generate a heat source, the temperature sensor of the temperature sensing unit 106 detects the temperature of the lunch box room and transmits the detected temperature to the control unit 104. The control unit 104 controls the temperature The user compares the lunch box set temperature set through the function selection unit 101 and controls the heating unit to be turned on or off according to whether the lunch box set temperature is large or small to control the lunch box operation. Here, the method of controlling the lunch box operation by comparing the detected temperature and the set temperature is generally the same as the temperature control method applied to the heating apparatus that controls the heater driving according to the temperature, and thus a detailed description thereof will be omitted.

In this case, when the lunch control is performed using only the heating means provided on the shelf, only the surface of the shelf with the built-in hot-wire heater may rise in temperature, and it is difficult to control the temperature of the lunch temperature . Accordingly, in order to prevent the disadvantages described above and reduce the influence of the outside air, the present invention detects the outside air temperature through the outside air temperature sensing unit 109 in order to maintain the temperature of the lunch box shelf as a whole.

Then, the controller controls the driving of the rear heater provided on the duct 130 to be on or off according to the sensed temperature of the outside air, thereby maintaining the temperature of the lunch box shelf as a whole.

In addition, such outdoor air temperature is also used to prevent a case where the outdoor air temperature is too high due to an increase in the amount of generated cold air (increase in the RPM of the blowing fan) during a cold /

As is well known, when the open showcase for both refrigerated and lunch boxes is operated in combination with the refrigerator / lunch box, the user can always recognize the operation mode of the open showcase for both refrigerated and lunch boxes through the display unit 107, It is possible to prevent a mistake in displaying the merchandise on the shelf of the shelf.

In addition, when the refrigerator / lunch compartment open showcase is simultaneously operated with the refrigerator / lunch box function, the user can select a shelf to be driven among the lunch box shelves through the function selection unit 101 as is well known. If the shelf to be driven by the lunch box shelf is selected through the function selection unit 101, the control unit 104 lights the light emitting diode indicating the operation status of the shelf selected by the user through the display unit 107, So that the user can easily recognize which one of the lunch racks is operating. For example, when a user selects a shelf to be driven, the light emitting diode is used to inform the operation target shelf.

Thereafter, the control unit 104 drives the heater driving unit 105 to drive only the hot wire heater included in the heating means of the operation target shelf. Each shelf is provided with a heating wire heater as heating means. Here, it is assumed that the control unit 104 can distinguish the operation target shelves based on the operation target classification information stored in the memory 102. [

According to the control of the control unit 104, the heating means provided on the operation target shelf operates to generate a heat source, and the product displayed on the operation target shelf is kept warm by the generated heat source.

When the heating means of the operation target shelf is driven to generate a heat source, the temperature sensor provided on the operation target shelf detects the temperature of the corresponding shelf and transmits the detected temperature to the control unit 104. The control unit 104, The user compares the temperature with the set temperature set by the user through the function selection unit 101 and controls the driving of the heating means of the operation subject shelf to be on or off individually according to whether the temperature is set or not.

At this time, even if the heating means of the operation target shelf is driven at the same value at the same time, the influence of the outside air is differently applied depending on the amount of goods displayed on the shelf or the position of the shelf so that the temperature of each operation target shelf may be different . Therefore, the control unit 104 compares the detected temperatures of the operation target shelves one by one, one by one, based on the control program stored in the memory 102, and individually controls the heating means provided on the operation target shelf .

Here, the method for controlling the lunch box operation by comparing the detected temperature with the lunch box setting temperature is performed in the same manner as the temperature control method applied to the heating device for controlling the heater driving according to the temperature. .

When the lunch box is controlled by using only the heating means provided in the shelf during the lunch box operation, the temperature of the shelf with the hot wire heater can be raised. In addition, The temperature may not be maintained. Accordingly, in order to prevent the disadvantages described above and reduce the influence of the outside air, the present invention detects the outside air temperature through the outside air temperature sensing unit 109 in order to maintain the temperature of the lunch box shelf as a whole.

Then, the controller controls the driving of the rear heater provided on the duct 130 to be on or off according to the sensed temperature of the outside air, thereby maintaining the temperature of the lunch box shelf as a whole.

Further, when it is judged that the sensed outside air temperature is in the summer, more cold air is introduced into the lunch box room by increasing the amount of cold air generated in the refrigerator section (blowing fan RPM is increased) .

The present invention can simultaneously control a refrigerator / lunch companion open showcase with a refrigerator / lunch box function and select only a part of shelves of a lunch box shelf so that individual control can be performed. And unnecessary power consumption can be prevented.

FIG. 4 is a flowchart illustrating a method of controlling an open showcase for both cold storage and lunch boxes according to the present invention, wherein S represents a step, and the control unit 104 of FIG. 3 controls the open showcase for both refrigerator / .

As shown in FIG. 4, the refrigerator / lunch compartment open showcase control method according to the present invention includes the steps of (a) searching for a function selected by a user, controlling the display of the refrigeration operation when the refrigeration operation is selected, (S101 to S105) for controlling the refrigerating temperature by comparing the detected temperature with the set temperature by detecting the refrigerating temperature after the driving; (b) determining whether the individual lunch box is selected in the case of the refrigerator / lunch box selection in the step (a); (c) if the individual lunch is not selected as a result of the determination in the step (b), the display of the refrigerator / lunch box operation is controlled and the refrigerator temperature and the outdoor temperature (S107 to S111) of controlling the refrigerating temperature and the lunch box temperature; (d) if the individual lunch is selected as a result of the determination in the step (c), the display of the operation state of the selected shelf is controlled and only the heating means of the refrigerator and the operation target shelf is driven, (S107, S112 to S115) of controlling the refrigeration temperature and the lunch box temperature of the individual shelves according to the ambient temperature.

If the user selects the refrigeration operation in step S101, the control proceeds to step S102 to control the display unit 107 so that the light emitting diode for indicating the refrigeration operation is turned on And displays the refrigerating operation status.

In the refrigerating operation state, the flow advances to step S103 to drive the refrigeration unit 120 to perform refrigeration. In step S104, the refrigeration temperature is detected. The refrigeration temperature detected in step S105 is compared with the refrigeration setting temperature set by the user, A solenoid valve for controlling the flow of the refrigerant is controlled to suitably control the refrigerating temperature to perform the refrigerating operation.

On the other hand, if it is determined in step S101 that the user has not selected refrigeration, the flow advances to step S106 to check whether the user has selected refrigeration / lunch box operation. Here, the selection of the refrigeration / lunch box operation is made by inserting the partition shelf 150. For example, when the compartment shelf 150 is inserted at a predetermined position, the operation is controlled by both refrigerating and lunch. Here, the user can again select only the lunch box shelves of all the lunch box shelves using the compartment shelf 150.

If the refrigerator / lunch box operation is selected, the flow advances to step S107 to check whether the individual lunch box is selected. For example, it is confirmed whether or not the user has selected the operation target shelf separately.

If the user does not select a particular shelf, the control unit 10 proceeds to step S108 to control the display unit 107 to display the refrigerator / lunch box operation state so as to operate the refrigerator / lunch box function. And drives the heating means provided in all the lunch box shelves to perform the lunch box function.

Thereafter, the flow advances to step S110 to detect the temperature of the refrigerator and the lunch box shelf, compares the detected refrigerator temperature with the predetermined refrigerator setting temperature in step S111, compares the detected lunch box temperature with the preset lunch box setting temperature, So that the refrigeration / lunch box operation can be appropriately controlled by controlling the driving of the refrigerator and the heating means.

In this case, when the lunch box operation is controlled using only the heating means provided in the shelf during the lunch box operation, the temperature of the shelf with the built-in hot plate heater may be raised. The temperature may not be maintained. Accordingly, in order to prevent the above-described disadvantages and reduce the influence of the outside air, the present invention detects the outside air temperature through the outside air temperature sensing unit 109 so that the temperature of the lunch box shelf is maintained at the lunch box temperature.

Then, the controller controls the driving of the rear heater provided on the duct 130 to be on or off according to the sensed temperature of the outside air, thereby maintaining the temperature of the lunch box shelf as a whole. For example, the temperature around the displayed merchandise is uniformly controlled as a whole.

Also, the amount of generated cold air in the refrigerating unit is adjusted according to the sensed outside air temperature (blowing fan RPM control) to prevent the products displayed on the lunch box shelf from being damaged.

For example, the outside air temperature is used to increase the amount of cold air generated during the summer, to reduce the amount of cold air generated during the winter, and to control the temperature of the entire space of the refrigerator / lunchbox uniformly by utilizing a rear heater.

If the user selects the individual lunch box, that is, if the user selects the operation target shelf, the flow advances to step S112 to display the refrigerator / lunch box operation through the display unit 107, So that the user can easily recognize the shelf operating as the lunch box shelf. In this case, the user can easily recognize the operation target shelf by turning on the light emitting diodes provided on the respective shelves, thereby making it possible to prevent a mistake when displaying the product later. For example, it is possible to prevent the merchandise from being displayed on the shelf where the heater does not operate.

Thereafter, in step S113, the refrigerator is driven, and only the heating means of the operation target shelf is driven to control only the operation subject shelf with the lunch box function. In step S114, the refrigerator compartment temperature and the temperature of the operation subject shelf are detected. And compares the detected temperature of the lunch box shelf with the preset lunch box setting temperature and controls the refrigerator and heating means to control the refrigerator / .

In this case, when the lunch box operation is controlled using only the heating means provided in the shelf during the lunch box operation, the temperature of the shelf with the built-in hot plate heater may be increased. Also, The temperature may not be maintained. Accordingly, in order to prevent the above-described disadvantages and reduce the influence of the outside air, the present invention detects the outside air temperature through the outside air temperature sensing unit 109 so that the temperature of the lunch box shelf is maintained at the lunch box temperature.

Then, the controller controls the driving of the rear heater provided on the duct 130 to be on or off according to the sensed temperature of the outside air, thereby maintaining the temperature of the lunch box shelf as a whole.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

110 ... Body case
120 ... Refrigerator
140 ... shelf
150 ... Compartment shelf
101 ... Function selection unit
102 ... Memory
103 ... Power supply
104 ... The control unit
105 ... Heater driver
106 ... The temperature sensing unit
107 ... Display portion
108 ... Compartment shelf sensing unit
109 ... The outside temperature sensing unit

Claims (12)

delete delete delete delete delete delete delete (a) searching for a function selected by the user, controlling the display of the refrigeration operation when the refrigeration operation is selected, detecting the refrigeration temperature after driving the refrigeration unit, and controlling the refrigeration temperature by comparing with the set temperature;
(b) determining whether the individual lunch box is selected when the refrigerator / lunch box is selected at the time of the function search of the step (a);
(c) if the individual lunch is not selected as a result of the determination in the step (b), the display of the refrigerator / lunch box operation is controlled and the refrigerator temperature and the outdoor temperature Controlling refrigeration temperature and lunch temperature;
The step (a)
(a-1) controlling refrigeration display and driving the refrigerator to perform refrigeration;
(a-2) detecting a refrigerating temperature;
(a-3) controlling the refrigeration temperature by comparing the detected refrigeration temperature with a predetermined refrigeration set temperature, and controlling the solenoid valve to control the flow of the refrigerant based on whether the refrigeration temperature is large or small. Common open showcase control method.
The method of claim 8,
(d) if the individual lunch is selected as a result of the determination in the step (c), the display of the operation state of the selected shelf is controlled and only the heating means of the refrigerator and the operation target shelf is driven, And controlling the refrigerator temperature and the lunch box temperature of the individual shelves according to the outdoor air temperature.
delete The method of claim 8, wherein the step (c)
(c-1) controlling refrigeration / lunch display, simultaneously performing a refrigerator and a heating means to perform a refrigerator / lunch box function;
(c-2) detecting refrigeration temperature, lunch temperature, and outdoor temperature;
(c-3) controlling the refrigerating temperature in accordance with the detected refrigeration temperature, and controlling the driving of the heating means and the rear heater according to the detected lunch box temperature and outside air temperature to control the lunch box temperature How to control open showcase for both lunch and lunch.
[12] The method of claim 9, wherein step (d)
(d-1) controlling the refrigeration / lunch box display and displaying the operation state of the selected operation target shelf;
(d-2) driving the refrigerating unit and driving the heating means of the operation subject shelf so as to control only the operation subject shelf with the lunch box function;
(d-3) detecting a refrigeration temperature, a temperature of the operation target shelf, and an outside air temperature;
(d-4) controlling the refrigeration according to the detected refrigeration temperature, and controlling the driving of the heating means and the rear heater according to the detected temperature of the shelf and the outside air temperature, thereby controlling the lunch box temperature How to control open showcase for both cold and lunch.

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