Abstract:
A complex home appliance and a method of controlling and installing the same. The complex home appliance includes a single power supply unit shared by two or more component home appliances of the complex home appliance. The two or more component home appliances are controlled by a single control unit of the complex home appliance. The complex home appliance can be operated in a simultaneous operation mode in which the two or more component home appliances are simultaneously operable, and an individual operation mode in which only one of the two or more component home appliances is operable. The complex home appliance includes a mode-setting unit to set the simultaneous or individual operation mode. The complex home appliance includes a power cut-off unit which supplies power to the single power supply unit and cuts off the supply of the power in response to being electrically opened at the time of an electrical overload.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
   This application claims the benefit of Korean Application No. 2002-53360, filed Sep. 5, 2002, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference. 
   BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to home appliances, and more particularly, to a complex home appliance, in which home appliances such as a microwave oven, a toaster, and a coffee maker are integrated into a single system. 
   2. Description of the Related Art 
   Generally, home appliances include kitchen appliances, such as a toaster, a coffee maker and a microwave oven, and audio/video equipment, such as a stereo system, a Video Cassette Recorder (VCR), and a Digital Versatile Disc (DVD) player. The kitchen appliances are home appliances that have similar purposes and are mainly used within a region of a kitchen space. Although the kitchen appliances are used within the region of the kitchen space, the kitchen appliances are independent systems, each having a control unit (for example, a microcomputer) and a power supply unit therein. 
     FIG. 1  shows conventional kitchen appliances including a wall mounted microwave oven  102  having a hood function and placed above an electric/gas oven  104 . A toaster  108  and a coffee maker  110  are stationed, for example, on the right and left sides of the electric/gas oven  104 . 
   As described above, since the home appliances having a similar purpose, that is, to cook food, are placed in several locations of the kitchen space, an increased movement of a user is required to carry out food preparations. Accordingly, the additional movements increase the overall food preparation time and excessively consumes the user&#39;s energy. 
   SUMMARY OF THE INVENTION 
   Accordingly, an aspect of the present invention is to provide a complex home appliance, in which home appliances having similar purposes and are used in a restricted region of a home, are integrated into a single system. 
   Another aspect of the present invention is to provide a complex home appliance which allows a user to use component home appliances thereof simultaneously or individually, thus preventing an electrical overload due to the simultaneous operation of the component home appliances where an insufficient amount of power is supplied. 
   Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. 
   To achieve the above and/or other aspects of the present invention, there is provided a complex home appliance comprising two or more component home appliances which are integrated into the complex home appliance as a single system, and a single power supply unit which is shared by the two or more component home appliances of the complex home appliance. The complex home appliance may further comprise a single control unit which controls the two or more component home appliances. 
   The complex home appliance can simultaneously operate the two or more component appliances in a simultaneous operation mode thereof, and operate only one of the two or more component home appliances in an individual operation mode thereof. 
   The complex home appliance may include a mode-setting unit to set the simultaneous or individual operation mode. 
   The complex home appliance may include a power cut-off unit which cuts off a supply of power to the single power supply unit in response to being electrically opened to prevent an electrical overload. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
     These and other aspects and advantages of the present invention will become apparent and more readily appreciated by describing in detail a preferred embodiment thereof with reference to the accompanying drawings in which: 
       FIG. 1  is a perspective view illustrating a use of conventional kitchen appliances; 
       FIG. 2  is a perspective view of a complex home appliance according to an embodiment of the present invention; 
       FIG. 3  is a block diagram of the complex home appliance shown in  FIG. 2 ; 
       FIG. 4  is a flowchart illustrating a setting of a simultaneous or individual operation mode according to a volume of a rated power of a power cut-off unit in the complex home appliance shown in  FIG. 3 ; and 
       FIG. 5  is a flowchart illustrating a setting of the simultaneous, a partially simultaneous, or the individual operation mode according to the volume of the rated power of the power cut-off unit in the complex home appliance shown in  FIG. 3 . 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present invention by referring to the figures. 
     FIG. 2  shows a perspective view of a complex home appliance  200  according to an embodiment of the present invention. As shown in  FIG. 2 , the complex home appliance  200  of the present invention is placed and used, for example, above an electric or gas oven  204 . The complex home appliance  200  of the present invention is a single system into which component home appliances including a wall mounted microwave oven  202  having a hood function, a toaster  208  and a coffee maker  210  are integrated. In this case, the single system refers to, for example, a system that shares a single power supply unit and is controlled by a single control unit. 
   A ventilation device (not shown) is placed within the wall mounted microwave oven  202  having the hood function to discharge steam, odor and smoke generated by a use of the electric/gas oven  204 . Additionally, a ventilation motor (not shown) is placed within the wall mounted microwave oven  202  having the hood function to drive the ventilation device. The ventilation device shares the single power supply unit of the complex home appliance  200 , and is controlled by the single control unit of the complex home appliance  200 . In addition, the wall-mounted microwave oven  202  is provided with an input unit  212  to input setting conditions required to cook food. Set values input through the input unit  212 , and various cooking information are visually displayed on a display unit  214 . 
     FIG. 3  shows a block diagram of the complex home appliance  200  shown in  FIG. 2 . As shown in  FIG. 3 , input ports of a control unit  302  that controls the overall operation of the complex home appliance  200  is connected to the input unit  212  and a power supply unit  308 . The input unit  212  includes a mode-setting key  332  which is capable of setting a simultaneous or an individual operation mode of the complex home appliance  200 . An input port of the power supply unit  308  is connected to a power cut-off unit  306  installed, for example, in a home. That is, the power supply unit  308  is supplied with power through the power cut-off unit  306 , transforms the power to a type of power needed for the complex home appliance  200 , such as Alternating Current (AC), Direct Current (DC), or power of a desired voltage level, and provides the transformed power to the component home appliances of the complex home appliance  200 . 
   The output ports of the control unit  302  are connected to a display drive unit  310 , a ventilation motor drive unit  314 , a magnetron drive unit  318 , a tray motor drive unit  322 , a coffee maker drive unit  326  and a toaster drive unit  330  to drive the display unit  214 , the ventilation motor  316 , the magnetron  320 , the tray motor  324 , the coffee maker  210  and the toaster  208 , respectively. The magnetron  320  installed in the microwave oven  202  is used to heat food by generating electromagnetic waves. The tray motor  324  is used to rotate a tray (not shown) of the microwave oven  202 . 
   In the simultaneous operation of the component home appliances of the complex home appliance  200 , where power consumed is greater than a rated power of the power cut-off unit  306 , the power cut-off unit  306  is electrically opened and the supply of the power to the power supply unit  308  is cut-off to prevent an electrical overload. In a home where the rated power of the power cut-off unit  306  is sufficiently great because the amount of the supplied power is sufficiently great, such a problem does not occur even though all of the component home appliances of the complex home appliance  200  are used. However, since the rated power of the power cut-off unit  306  is not great in a home where the amount of the supplied power is not sufficiently great, the power cut-off unit  306  is electrically opened in response to the electrical overload caused by the simultaneous operation of the component home appliances of the complex home appliance  200 . In such a case, the power supply unit  308  is not supplied with power and all of the component home appliances of the complex home appliance  200  are not allowed to be used simultaneously. 
   Accordingly, all of the component home appliances of the complex home appliance  200  are allowed to be simultaneously used in a home where the rated power of the power cut-off unit  306  is sufficiently great. On the other hand, the component home appliances of the complex home appliance  200  are allowed to be, for example, individually used in a home where the rated power of the power cut-off unit  306  is not sufficiently great, so as to utilize the complex home appliance  200  even in the case where the amount of the supplied power is not sufficiently great. 
   To implement the above-described concept, a process of setting a simultaneous or individual operation mode of the complex home appliance  200  according to the rated power of the power cut-off unit  306  is required before an operation of the complex home appliance  200 , and after the installation of the complex home appliance  200 . The setting of the simultaneous or individual operation mode can be directly performed by a manufacturing company of the complex home appliance  200 , after the installation of the complex home appliance  200 . However, the setting of the simultaneous and individual operation mode may be performed by a user of the complex home appliance  200 . 
     FIG. 4  shows a flowchart illustrating a setting of the simultaneous or individual operation mode according to the rated power of the power cut-off unit  306  in the complex home appliance  200  shown in  FIG. 3 . Where the simultaneous or individual operation mode of the complex home appliance  200  of the present invention is set, the rated power of the power cut-off unit  306 , instead of the amount of the supplied power, is used because the supply of the power to the power supply unit  308  is stopped by the power cut-off unit  306  at the time of an electrical overload, and the component home appliances of the complex home appliance  200  are not allowed to be used. 
   Referring to  FIG. 4 , an initial operation mode of the complex home appliance  200  of the present invention is set to the simultaneous operation mode in operation  402 , and all of the component home appliances of the complex home appliance  200  are allowed to be simultaneously operated after the installation of the complex home appliance  200  in operation  404 . Under this condition, a determination is made whether the power cut-off unit  306  is electrically opened in operation  406 . Since all of the component home appliances cannot be simultaneously used where the power cut-off unit  306  is electrically opened, the complex home appliance  200  is turned on and an operation mode of the complex home appliance  200  is changed from the simultaneous operation mode to the individual operation mode in operation  408 . Since the changed operation mode is displayed in the display unit  214 , the user can verify that the changed operation mode is the individual operation mode through the display unit  214  in operation  410 . Where the power cut-off unit  306  is determined not to be electrically opened in the operation  406 , it is determined that the rated power of the power cut-off unit  306  is sufficiently great. In this case, where the complex home appliance  200  is turned on, the currently set simultaneous operation mode is displayed through the display unit  214  in operation  412 . 
   Where a partially simultaneous operation mode is added to the operation modes of the complex home appliance  200 , some of the component home appliances of the complex home appliance  200  are simultaneously used according to the rated power of the power cut-off unit  306 . Accordingly, the efficiency of use of the complex home appliance  200  is further increased. 
     FIG. 5  shows a flowchart illustrating the setting of the simultaneous, partially simultaneous or individual operation mode according to the rated power of the power cut-off unit  306  in the complex home appliance  200  shown in  FIG. 3 . Here, the amount of power consumed by the component home appliances have the following increasing order with respect to each other: the microwave oven  202 &gt;the ventilation motor  316 &gt;the coffee maker  210 &gt;the toaster  208 . 
   Referring to  FIG. 5 , an initial operation mode of the complex home appliance  200  is set to the simultaneous operation mode in operation  502 , the complex home appliance  200  is installed, for example, in a cooking space in operation  504 , and the microwave oven  202  and the ventilation motor  316  are simultaneously operated in operations  506  and  508 , respectively. In this state, a determination is made whether the power cut-off unit  306  is electrically opened in operation  510 . Where the power cut-off unit is electrically opened, the microwave oven  202  and the ventilation motor  316 , as well as the other component home appliances, cannot be simultaneously used. 
   Accordingly, the complex home appliance  200  is turned on and an operation mode of the complex home appliance  200  is changed from the simultaneous operation mode to the individual operation mode in operation  512 . Two or more of the component home appliances of the complex home appliance  200  cannot be simultaneously used in the individual operation mode, while a single component home appliance may be used. Since the changed operation mode is displayed in the display unit  214 , the user can verify that the changed operation mode is the individual operation mode through the display unit  214  in operation  528 . 
   Where the power cut-off unit  306  is not opened in the operation  510 , the coffee maker  210  is allowed to be operated in operation  514 , and it is determined whether the power cut-off unit  306  is electrically opened in operation  516 . In this case, where the power cut-off unit  306  is electrically opened, the amount of the rated power of the power cut-off unit  306  is restricted to allow only the microwave oven  202  and the ventilation motor  316  to be used. 
   Accordingly, the complex home appliance  200  is turned on and the operation mode of the complex home appliance  200  is changed from the simultaneous operation mode to a partially simultaneous operation mode (for the microwave oven  202  and the ventilation motor  316 ) in operation  518 . Only the microwave oven  202  and the ventilation motor  316  may be simultaneously used in this partially simultaneous operation mode, while the rest of the component home appliances of the complex home appliance  200  may not be simultaneously used with the microwave oven  202  and the ventilation motor  316 . Since the changed operation mode is displayed in the display unit  214 , the user can verify that the changed operation mode is the partially simultaneous operation mode through the display unit  214  in the operation  528 . 
   The rated power of the power cut-off unit  306  is determined to be sufficiently great where the power cut-off unit  306  is not electrically opened in the operation  516 , after the operation of the coffee maker  210 . Accordingly, the toaster  208  is allowed to be operated in operation  520 , and a determination is made whether the power cut-off unit  306  is electrically opened in operation  522 . In this case, where the power cut-off unit  306  is electrically opened, only the microwave oven  202 , the ventilation motor  316  and the coffee maker  210  can be simultaneously operated with the amount of the rated power of the power cut-off unit  306 . Accordingly, the complex home appliance  200  is turned on and the operation mode of the complex home appliance  200  is changed from the simultaneous operation mode to a partially simultaneous operation mode (for the microwave oven  202 , the ventilation motor  316  and the coffee maker  210 ) in operation  524 . Only the microwave oven  202 , the ventilation motor  316  and the coffee maker  210  can be simultaneously used in this partially simultaneous operation mode, while the rest of the component home appliances of the complex home appliance  200 , that is, the toaster  208 , may not be simultaneously used along with the microwave oven  202 , the ventilation motor  316  and the coffee maker  210 . Since the changed operation mode is displayed in the display unit  214 , the user can verify that the changed operation mode is the partially simultaneous operation mode (for the microwave oven  202 , the ventilation motor  316  and the coffee maker  310 ) through the display unit  214  in the operation  528 . 
   The rated power of the power cut-off unit  306  is determined to be sufficiently great to simultaneously operate all of the component home appliances where the power cut-off unit  306  is not electrically opened in the operation  522 , after the operation of the toaster  208 . Accordingly, the complex home appliance  200  is turned on and the operation mode of the complex home appliance  200  is confirmed to be the simultaneous operation mode in operation  526 . In this case, all of the component home appliances of the complex home appliance  200  may be simultaneously used. Since the operation mode is displayed in the display unit  214 , the user can verify that the operation mode is the simultaneous operation mode through the display unit  214  in the operation  528 . 
   As described above, a complex home appliance of the present invention increases a user&#39;s convenience by providing a single system which integrates component home appliances having similar purposes in a region of a home. In addition, the complex home appliance of the present invention solves an electrical overloading problem which occurs due to a simultaneous use of the component home appliances of the complex home appliance. That is, the present complex home appliance allows a user to use the component home appliances simultaneously, partially simultaneously, or individually according to a rated power of a power cut-off unit. 
   Although a few preferred embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.