MXPA99002947A

MXPA99002947A - Microwave oven mounted on the wall and control method for my

Info

Publication number: MXPA99002947A
Application number: MXPA/A/1999/002947A
Authority: MX
Inventors: Hong Kang Jeon
Original assignee: Samsung Electronics Co Ltd
Priority date: 1998-07-27
Filing date: 1999-03-26
Publication date: 2000-08-01

Abstract

A wall-mounted microwave oven and a control method for the same are described, which includes a body that forms a cooking cavity to accommodate food to be cooked, a magnetron to generate electromagnetic waves that are emitted into the interior of the cooking cavity, a box surrounding the body and forming therein a bell duct having an inlet port placed in the lower portion of the box and an outlet port placed in the upper portion thereof, and A hood fan installed in the hood duct, the wall-mounted microwave oven includes a switch to select a low level voltage and a normal voltage supplied to the magnetron and a controller to control the switch so that the low voltage level is supplied to the magnetron when the bell fan operates when the magnetron operates at normal voltage, and simultaneously extends the cooking time a remaining n-speed

Description

M1CROONPAS OVEN MOUNTED ON THE WALL AND METHOD OF CONTROL FOR THE SAME BACKGROUND OF THE INVENTION 1. FIELD OF THE INVENTION The present invention relates to a wall-mounted microwave oven and to a control method for the same, and more particularly, to a wall-mounted microwave oven consisting of a body that forms a cooking cavity therein. to accommodate food to be cooked, a magnetron to generate electromagnetic waves that will be emitted into the cooking cavity, a box that surrounds the body and forms therein a bell duct that has an inlet port placed in the portion bottom of the box and an outlet port placed in the upper portion thereof, and a bell fan installed in the bell duct. 2. DESCRIPTION OF THE RELATED TECHNIQUE As shown in Figure 1, a wall-mounted microwave oven is mounted on a wall above a gas burner 50, and has a function of absorbing steam and fumes generated when the food is cooked in the gas stove. , so that the microwave oven serves as a bell. As shown in figures 1 and 2, the wall-mounted microwave oven consists of a body 3 having a cooking cavity 4 in which the food to be cooked is accommodated, and a box surrounding the body 3. A magnetron 30 supplying high frequency electromagnetic waves within the cooking cavity 4 is mounted in the body 3. The magnetron 30 receives a high voltage current through a high voltage transformer (not shown) and a high voltage capacitor. high voltage (not shown). Meanwhile, the box 6 includes an upper box 6a surrounding the upper portion and both lateral surfaces of the body 3, and a lower case 6b combined with the lower portion of the body 3. The bell conduit 15 as a way for the outlets of steam and smoke is formed in the space between the box 6 and the body 3. To do so, an inlet port 8 for inhaling steam and fumes inside the bell conduit 15 is formed on the lower box 6b and an outlet port 9 it is formed on the upper surface of the upper case 6a. An outlet tube 11 is connected to the outlet port 9. The outlet tube 11 is connected to an outlet path 17 which penetrates the wall and communicates with the air. The bell fan 13 is installed in the upper portion of the body 3 near the outlet port 9, in order to draw the vapor and smoke inhaled into the bell conduit 15 through the inlet port 8 into the air through the exit port 9. Meanwhile, a bell electric light 55 for illuminating the gas burner 50 is installed on the lower part of the lower case 6b. In the event that the magnetron 30 which has a power consumption above 1 KW and the electric bell lamp 55 which has a power consumption of 80W or the magnetron 30 has a power consumption above 1 KW and the bell fan 13 have a power consumption of 150W-200W operate simultaneously, the microwave oven can be overloaded, a fuse in a distribution panel can melt and thus the electric current can be cut off, therefore, the wall-mounted microwave oven adopts the function capable of supplying the magnetron 30 with a voltage lower than a normal voltage in order to avoid overload. When the magnetron 30 operates in conjunction with the bell electric lamp 55 or the bell fan 13, the electric current to be supplied to the magnetron 30 can be changed from the normal voltage to the low level voltage. However, because a predetermined cooking time is not changed even in the event that the electric current supplied to the magnetron 30 is changed to the low level voltage, the cooking can not be performed properly.

BRIEF DESCRIPTION OF THE INVENTION In order to solve the above problems, it is an object of the present invention to provide a wall-mounted microwave oven that can alter a voltage level that has to be supplied to a magnetron to prevent the microwave oven from being overloaded, and to itself time to alter the cooking time so that the cooking can be carried out properly in case a voltage level supplied to the magnetron is changed, according to whether or not the hood fan and the rest work, and a method of control for it. To achieve the foregoing object of the present invention, a wall-mounted microwave oven is provided that consists of a body that forms a cooking cavity to accommodate food to be cooked, a magnetron to generate electromagnetic waves that are to be emitted towards the inside of the cooking cavity, a box that surrounds the body and forms therein a bell duct having an inlet port placed in the lower portion of the box and an outlet port placed in the upper portion thereof , and a hood fan installed in the hood duct. Said wall-mounted microwave oven includes: a switch for selecting one of a normal voltage and a low level voltage to be supplied to said magnetron; and a controller for controlling the switch in such a way that the low level voltage is supplied to the magnetron when the bell fan operates during the operation of the magnetron with normal voltage, and simultaneously extending the remaining cooking time by a predetermined speed. Preferably, said controller controls the commutator in such a way that the low level voltage is supplied to the magnetron in the event that the magnetrp is energized during the operation of the fan hood, and simultaneously sets the cooking time longer than in The normal voltage. Furthermore, said controller controls the switch in such a way that the normal voltage is supplied to the magnetron when the bell fan stops during the time when the magnetrp operates at the low level voltage, and shortens the remaining cooking time at a predetermined speed . Said wall-mounted microwave oven additionally consists of a bell electric lamp installed on the bottom of the box, wherein the controller controls the switch so that the low level voltage can be supplied to the magnetron when the bell lamp is on, and simultaneously the remaining cooking time can be extended at a predetermined speed. It is also preferable for said controller to control the switch so that the normal voltage can be supplied to the magnetron when the bell electric lamp is on, and the remaining cooking time can be shortened at a predetermined speed, when the bell electric lamp is off. when the magnetron operates at low level voltage. The object of the present invention can be achieved by a control method for a wall-mounted microwave oven consisting of a body forming a cooking cavity to accommodate food to be cooked, a magnetron to generate electromagnetic waves to be provided within the cooking cavity, a box surrounding the body and forming therein a bell duct having an inlet port placed in the lower portion of the box and an outlet port placed in the upper portion thereof , and a bell fan installed in the hood. Said method of control consists of the steps of: Providing a normal voltage to the magnetron and setting the cooking time in correspondence with the normal voltage; and supplying a low level voltage lower than the normal voltage to the magnetron and simultaneously extending the remaining cooking time by a predetermined speed, if the hood fan operates during the operation of the magnetron. Preferably, said controller controls the switch in such a way that the low level voltage is supplied to the magnetron in the event that the magnetron is supplied with power during the operation of the bell fan, and simultaneously sets the cooking time longer than the of the normal voltage. Normal voltage is supplied to the magnetron when the bell fan stops when the magnetron operates at low level voltage, and simultaneously the remaining cooking time can be shortened by a predetermined speed. The microwave oven additionally consists of a bell electric lamp installed on the bottom of the box, and where the electric current to be supplied to the magnetron is changed from the normal voltage to the low level voltage when the bell lamp is on, and simultaneously the remaining cooking time can be extended by a predetermined speed. The electric current to be supplied to the magnetron is changed from the low level voltage to the normal voltage and simultaneously the remaining cooking time can be extended to a predetermined speed, when the electric hood lamp is turned off during the operation of the magnetron to the low level voltage . Said control method additionally comprises the steps of: confirming whether or not the bell fan operates; and supply the normal voltage to the magnetron if the hood fan is de-energized and the cooking time is set in correspondence to normal voicing and the low-level voltage is supplied to the magnetron if the hood fan is energized and a Low level voltage for the cooking time longer than the normal voltage cooking time. Preferably, the low level voltage is supplied to the magnetron in the event that the bell fan is energized during normal operation of the magnetron, and simultaneously the remaining cooking time is extended by a predetermined speed. Desirably, the normal voltage is supplied to the magnetron when the bell fan is de-energized for as long as the magnetron operates at the low level voltage, and simultaneously the remaining cooking time can be shortened by a predetermined speed.

BRIEF DESCRIPTION OF THE DRAWINGS The above objects and advantages of the present invention will be apparent by describing the structure and operation thereof in detail with reference to the appended drawings in which: Figure 1 is a schematic view showing a configuration of a microwave oven mounted in the wall in accordance with the present invention when it has been installed on a wall; Figure 2 is a partially expanded perspective view showing a wall-mounted microwave oven in accordance with the present invention; Figure 3 is a driving circuit diagram of a wall-mounted microwave oven in accordance with the present invention; and Figure 4 is a flow chart diagram for explaining a method for controlling the wall mounted microwave oven in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. A wall-mounted microwave oven in accordance with the present invention has substantially the same configuration as that shown in Figures 1 and 2, the detailed description of the structure of the present invention will be omitted herein. Figure 3 is a conductor circuit diagram of a wall-mounted micro sling furnace according to the present invention. As illustrated, a conductor circuit for a wall-mounted microwave oven consists of a bell guide portion 20 coupled between the first and second commercial electric power supply lines 1 and 2, and a portion of the oven circuits of microwave 60 connected in parallel with the hood driving portion 20, to control the electric current for a portion of magnetron driver circuit 90 to be supplied through a high voltage transformer 80. The micro-shank oven circuit portion 60 includes a cooking chamber electric light 61 and a cooking chamber switch 62 formed between the first and second commercial electric power supply lines 1 and 2, and a stirrer motor 63 and an electric air blower motor 65 connected in parallel with each other between the first commercial power supply line 1 and an electric power line connecting the electric lamp 61 of the cooking chamber and the switch 62 of the chamber of cooking. Meanwhile, a switch 70 for selecting the voltage level to be supplied to the high voltage transformer 80 for supplying power to the magnetron 30 is connected between the second commercial power supply line 2 and the induction coil of the power transformer 80. high voltage, and is formed of a normal voltage contact 71 which is turned on when the high electrical current is output, and a low level voltage contact 72 which is turned on when the electric current drops. Here, the normal voltage contact 71 is connected to an intermediate cover of the induction coil and the low level voltage contact 72 is connected to one end of the induction coil. Meanwhile, the bell driving portion 20 includes a bell electric lamp 55 connected between the first and second commercial power supply lines 1 and 2 and a bell electric lamp switch 27 for supplying electrical power to the lamp bell 55 or isolate it from it. The bell conductor portion 20 also includes a bell fan motor 45 connected between the first and second commercial power supply lines 1 and 2, connected in parallel with the electric bell lamp 55 and the electric lamp switch 27 and a bell fan switch 22 for supplying electrical power to the bell fan motor 45 or isolating it from it. Figure 4 is a flow chart illustrating a control procedure of the controller 10. If the power is applied to the wall-mounted microwave oven, the controller 10 judges whether the bell fan 13 or the bell electric lamp of 55 operate or not (S10). If the bell fan 13 or the electric bell lamp 55 does not function as a result of the judgment, the controller 10 judges whether a cooking has been started or not (S20). When a firing has started, the normal voltage contact 71 of the switch 70 is turned on, to supply a normal voltage to the magnetron 30 through the high voltage transformer 80 (S30). If the normal voltage is supplied to the magnetron 30, the controller 10 sets the cooking time in a normal mode in which a normal voltage is supplied to the magnetron 30 (S40). In this way, if the magnetron 30 operates in a normal mode, the controller 10 judges whether the set cooking time has been fulfilled (S50). If the cooking time has been fulfilled, the program returns to step S10 and then judges whether the bell fan 13 or the bell electric lamp 55 work or not. Meanwhile, if cooking time remains, the controller 10 judges whether the fan 13 or the bell electric lamp 55 has been re-started to operate (S60). If the bell fan 13 or the bell electric lamp 55 does not work, the controller 10 checks whether the cooking time has been fulfilled again (S50). If the bell fan 13 or the bell lamp 55 operates, the low level voltage contact 72 of the switch 70 is turned on to supply the low level voltage to the magentron 30 (S70). Then, the controller 10 extends the cooking time to a predetermined speed by multiplying the remaining cooking time by a constant a (alpha) which is a real number greater than 1 (S80). Then, the controller 10 checks again whether the cooking time has been fulfilled or not (S120). Meanwhile, if the bell fan 13 or the bell electric lamp 55 operates in the initial step S10, the controller 10 judges whether a cooking has been started (S90). If cooking has been started, the controller 10 supplies the low level voltage to the magnetron 30 (S100). After the same manner as in step S80, the remaining cooking time is extended by a predetermined speed (S1 10). In case it is judged whether the cooking time has been fulfilled and that the cooking time has not been fulfilled (S120), it is judged whether the bell fan 13 or the electric bell lamp 55 is stopped or not (S130). In case the bell fan 13 or the bell electric lamp 55 does not stop as a result of the judgment in step S130, the controller 10 checks again whether the time has been fulfilled (S120). Further, in the event that the bell fan 13 or the bell electric lamp 55 stops, the normal voltage contact 71 of the switch 70 is turned on, to supply a standard voltage a magnetron 30 (S140). After controller 10 it shortens the cooking time by a predetermined speed by multiplying the remaining cooking time by a constant ß which is a real number less than 1 (S150). Then, the program returns to step S50, and the controller 10 checks whether the cooking time has been fulfilled or not. As described above, in the present invention, the bell fan 13 or the bell electric lamp 55 operates simultaneously together with the magnetron 30. If a voltage supplied to the magentron 30 is changed to a low level voltage lower than the standard voltage, the cooking time is extended by a predetermined speed. Further, in case the fan 13 or the bell electric lamp 55 stops during the time when the low level voltage is supplied to the magentron 30, the voltage supplied to the magentron 30 returns to the normal voltage and the cooking time is shortens by a predetermined speed. That is, the cooking time can be increased or decreased according to the level of voltage supplied to the magetron 30, therefore performing efficient cooking. As described above, the wall-mounted microwave oven in accordance with the present invention changes the voltage supplied to the magentron to low-level voltage and extends the cooking time, so as to efficiently cook the food, if necessary. the bell fan and the electric bell lamp work simultaneously. Although the present invention has been described in connection with preferred embodiments thereof, it will be appreciated by those skilled in the art that additions, modifications, substitutions and deletions not specifically described can be made without departing from the spirit and scope of the invention as defined. in the appended claims.

Claims

NOVELTY OF THE INVENTION CLAIMS

1. - A wall-mounted microwave oven consisting of a body forming therein a cooking cavity to accommodate food to be cooked, a magnetron to generate electromagnetic waves that will be emitted into the cooking cavity, a box that surrounds the body and forms therein a bell duct that has an inlet port placed in the lower portion of the box and an outlet port placed in the upper portion thereof, and a bell fan installed in the bell duct, the wall-mounted microwave oven consists of: a switch for selecting a normal voltage and a low level voltage to be supplied to said magnetron; and a controller for controlling the switch so that the low level voltage is supplied to the magnetron when the bell fan operates when the magnetron is operating at the normal voltage, and simultaneously extending the remaining cooking time by a predetermined speed.

2. The wall-mounted microwave oven according to claim 1, further characterized in that said controller controls the commutator in such a way that the low level voltage is supplied to the magnetron in case the magnetron is energized during the operation of the hood fan, and simultaneously sets the cooking time longer than that of the normal voltage.

3. The wall-mounted microwave oven according to claim 2, further characterized in that said controller controls the switch in such a way that the normal voltage is supplied to the magnetron when the bell fan stops when the magnetron operates at the voltage low level, and shortens the remaining cooking time by a predetermined speed.

4. The wall-mounted microwave oven according to claim 1, further comprising an electric hood lamp installed on the bottom of the box, wherein the controller controls the switch so that the low voltage Level can be supplied to the magnetron when the electric hood lamp is on, and simultaneously the remaining cooking time can be extended by a predetermined speed.

5. The wall-mounted microwave oven according to claim 4, further characterized in that said controller controls the switch so that the normal voltage can be supplied to the magnetron when the bell electric lamp is on, and the time of Remaining cooking can be shortened by a predetermined speed, when the electric hood lamp is turned off during the operation of the magnetron at low level voltage.

6. - A control method for controlling a wall-mounted microwave oven consisting of a body forming therein a cooking cavity for accommodating food to be cooked, a magnetron for generating electromagnetic waves to be provided within the cavity of cooking, a box that surrounds the body and forms in the same a bell duct that has an entrance port placed in the lower portion of the box and an outlet port placed in the upper portion thereof, and a bell fan installed in the hood duct, the control method of the wall-mounted microwave oven consists of the steps of: supplying a normal voltage to the magnetron and setting the cooking time corresponding to the normal voltage; and supplying a voltage lower than that of the normal voltage to the magnetron and simultaneously extending the remaining cooking time by a predetermined speed, if the bell fan operates during the operation of the magnetron.

7. The control method according to claim 6, further characterized in that the controller controls the switch in such a way that the low level voltage is supplied to the magnetron in case the magnetron is energized during the operation of the bell fan, and simultaneously sets the cooking time longer than that of the normal voltage.

8. The control method according to claim 7, further characterized in that the normal voltage is supplied to the magnetron when the bell fan stops when the magnetron operates at low level voltage, and simultaneously the remaining cooking time can be shortened by a predetermined speed.

9. The control method according to claim 6, further characterized in that the microwave oven additionally consists of a bell electric lamp installed on the bottom of the box and where the electric current to be supplied to the magnetron is changed from the normal voltage to a low level voltage when the electric hood lamp is turned on, and simultaneously the remaining cooking time can be extended by a predetermined speed.

10. The control method according to claim 9, further characterized in that the electric current to be supplied to the magnetron is changed from low level voltage to normal voltage and simultaneously the remaining cooking time can be extended by a predetermined speed, when The bell lamp shuts off for as long as the magnetron operates at low voltage.

11. A control method for controlling a wall-mounted microwave oven consisting of a body that forms therein a cooking cavity to accommodate food to be cooked, a magnetron to generate electromagnetic waves to be supplied within the cooking cavity, and a box that surrounds the body and forms therein a bell duct having an inlet port placed in the lower portion of the box and an outlet port placed in the upper portion thereof, and a bell fan installed in the hood duct, the method of controlling the wall-mounted microwave oven consists of the steps of: confirming whether the bell fan works or not; and supplying a normal voltage to the magnetron if the bell fan is without power and setting the cooking time in correspondence to the normal voltage and supplying a voltage lower than the normal voltage to the magnetron if the bell fan is powered and simultaneously set a time Low-voltage cooking time longer than the normal voltage cooking time. 12.- The method of control in accordance with the claim 11, further characterized in that the low level voltage is supplied to the magnetron in case the bell fan is energized during normal operation of the magnetron, and simultaneously the remaining cooking time is extended by a predetermined speed. 13.- The method of control in accordance with the claim 12, further characterized in that the normal voltage is supplied to the magnetron when the bell fan is de-energized during operation of the magnetron at low level voltage, and simultaneously the remaining cooking time can be shortened by a predetermined speed.