Electric heating – Microwave heating – With control system
Reexamination Certificate
2001-01-05
2002-01-01
Leung, Philip H. (Department: 3742)
Electric heating
Microwave heating
With control system
C219S757000, C374S149000, C126S02100R
Reexamination Certificate
active
06335518
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates in general to microwave ovens, and more particularly, to a microwave oven having a sensor holder in a duct member, holding a temperature sensor.
2. Description of Related Art
The present invention will be described by applying it to a wall-mounted type of microwave oven. Generally, the wall-mounted microwave oven is installed over cookers such as a gas range, is etc., which functions as a hood to draw in smoke and smell generated in the gas range and discharge them.
FIG. 5
is an exploded perspective view of a conventional wall-mounted microwave oven. As shown therein, the conventional wall-mounted microwave oven is comprised of a main casing
101
having a cooking compartment
110
and a component chamber
115
, an outer casing
105
taking a shape of an inverse “U,” surrounding the main casing
101
and defining an outer appearance of the microwave oven, and a lower casing
103
coupled to the lower part of the main casing
101
.
On top of the outer casing
105
is formed an exhaust port
107
, and on the planar surface of the lower casing
103
are formed a pair of suction ports
106
.
The main casing
101
is comprised of a front plate
117
and a rear plate
118
which are coupled to the outer casing
105
, and a cavity casing
165
interposed between the front plate
117
and the rear plate
118
, taking a shape of a rectangular box and forming a cooking compartment
110
inside thereof. On top of the cavity casing
165
is provided a duct member
125
guiding flow of an air.
On the top face of the cavity casing
165
is provided a sensor bracket
127
for installing a temperature sensor
150
therein, sensing a temperature of the cooking compartment
110
. The temperature sensor
150
is comprised of a flange
151
provided at one end of the temperature sensor
150
for coupling with the sensor bracket
127
, and a pair of terminals provided in the other end of the temperature sensor
150
, supplying an external power to the temperature sensor
150
.
The sensor bracket
127
takes a shape of “⊂,” the closed side of which is fixed to the cavity casing
165
by welding, and the open side of which is separated from the top face of the cavity casing
165
with a predetermined space so that the flange
151
of the temperature sensor
150
is inserted thereinto.
Duct member
125
has recess
126
accommodating therein temperature sensor
105
inserted into sensor bracket
127
. An electrical lead (not shown) for power supply is connected to terminals
152
of temperature sensor
150
and is drawn out through recess
126
.
In the conventional microwave oven, to install the temperature sensor
150
on the top face of the cavity casing
165
, one side of the sensor bracket
127
has to be welded, and thereafter, the temperature sensor
150
has to be inserted into the other side of the sensor bracket
127
spaced therefrom, thereby making it cumbersome to prepare the installment of the temperature sensor
150
therein. Additionally, the conventional microwave oven lowers the efficiency of operational processes and increases the cost of production, due to the welding operation of the sensor bracket
127
.
SUMMARY OF THE INVENTION
Accordingly, the present invention has been made in view of the above-described shortcomings, and it is an object of the present invention to provide a microwave oven having a sensor holder in a duct member, holding a temperature sensor.
This and other objects of the present invention may be achieved by a provision of a microwave oven having a cavity casing forming a cooking compartment, comprising a temperature sensor sensing a temperature of the cooking compartment; a duct member installed on the top face of the cavity casing, guiding a flow of air, having an opening toward the cavity casing at one side thereof; and a holder sensor provided on an inner wall of the duct member, holding the temperature sensor.
The sensor holder includes a pair of arms surrounding the outside of the temperature sensor, and a detent disposed between the pair of arms preventing the temperature sensor from being removed therefrom.
The temperature sensor has a flange radially extended from one end thereof, and the pressing means includes a spring disposed between the detent and the flange.
REFERENCES:
patent: 4162381 (1979-07-01), Buck
patent: 4998001 (1991-03-01), Cigarini et al.
patent: 5140120 (1992-08-01), Kasai et al.
patent: 5575943 (1996-11-01), Lee
patent: 5780822 (1998-07-01), Lee
patent: 1-19232 (1989-01-01), None
Bushnell , Esq. Robert E.
Leung Philip H.
Sam-Sung Electronics Co., Ltd.
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