KR20020010780A - Apparatus for sensing water level of pressure rice cooker - Google Patents

Abstract

PURPOSE: A water level sensing device of a pressure cooker is provided to avoid the damage on a coil and a pressure cooker by sensing the water level and restraining boiling without water. CONSTITUTION: A sensor(70) is installed at a tank(63) on coils(65). The sensor is conducted only in the water. Conduction and non-conduction signals are transmitted to a float switch. Thus, the level of water in an inner container(61) is sensed. If the water level is decreased, the sensor transmits a non-conduction signal to the float switch. The float switch operates a buzzer and a lamp. Then, a user cuts off power supply and supplies water. Therefore, damage on a pressure cooker or the coil is prevented.

Description

Water level detector for pressure cooker {APPARATUS FOR SENSING WATER LEVEL OF PRESSURE RICE COOKER}

The present invention relates to a water level sensor for a pressure cooker, and more particularly, to a water level sensor for a pressure cooker for detecting the water level of the water heated by the coil.

A conventional pressure cooker installed and used in a ship such as a cargo ship, a merchant ship and a patrol boat will be described with reference to FIG. 1. 1 is a view showing the configuration of a conventional pressure cooker.

As shown, the main body 10 is provided with an open upper surface. A lid 10a is installed on the upper surface of the main body 10, and a tank 13 for storing cooking water is installed therein. In addition, an inner cylinder 11 in which cooking objects such as rice are stored is installed in contact with the tank 13 in the main body 10.

The tank 13 is provided with a coil 15 for heating cooking water into steam, and the rice in the inner cylinder 11 is cooked by the heat and pressure of the steam. Reference numeral 17 is a water supply cap in communication with the tank 13, 17a is an on-off valve, 19 is a safety valve for controlling the discharge of steam.

The conventional pressure cooker as described above is not provided with any means for detecting the water level of the cooking water stored in the tank (13). Due to this, the water stored in the tank 13 has been consumed, but the current is often supplied to the coil 15, so that the coil 15 is burned out.

In order to solve the above disadvantages, a method of manufacturing a larger capacity of the tank 13 has been proposed, but this has the disadvantage that the volume of the pressure cooker itself is large and costly.

The present invention was created to solve the above problems, an object of the present invention is to provide a water level detection device of a pressure cooker that can prevent damage to the product by providing a detection device for detecting the water level of the cooking water.

1 is a view showing the configuration of a conventional pressure cooker.

Figure 2 is a view showing the configuration of the pressure cooker according to an embodiment of the present invention.

3 is a circuit diagram illustrating a sensing device according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

50: support 60: main body

60a: lid 61: inner cylinder

65: coil 67: safety valve

69: water supply cap 69a: on-off valve

70: sensor

Water level detection device of the pressure cooker according to the present invention for achieving the above object, the upper surface is open cylindrical body; A lid for opening and closing the opening surface of the main body; A tank installed inside the main body and storing water for cooking; An inner cylinder installed inside the main body to come into contact with the tank and containing cooking objects; A coil installed in the tank to heat cooking water stored in the tank; A water supply cap installed at one side of an upper end side of the main body so as to communicate with the tank and having an opening / closing valve supplied with cooking water; A safety valve installed at the other end of the upper end side of the main body so as to communicate with the tank, and for discharging steam when the pressure of the tank becomes higher than a predetermined value; A conductor sensor installed in the tank of the upper portion of the coil and energized when the water is submerged in the cooking water and not energized when the water is submerged in the cooking water; Prote switch receiving a signal from the sensor; It is provided with a buzzer and a lamp for generating an alarm signal by the signal transmitted from the prot switch.

Hereinafter, with reference to the accompanying drawings will be described in detail the water level detection device of the pressure cooker according to an embodiment of the present invention.

2 is a view showing the configuration of a pressure cooker according to an embodiment of the present invention. As shown, the main body 60 is provided with the upper surface supported by the support 50. A lid 60a is provided on an upper surface of the main body 60, and a tank 63 in which cooking water is stored is provided inside. Inside the tank 63, a coil 65 for heating the cooking water to steam. In addition, an inner cylinder 61 in which cooking objects, such as rice, is placed inside the main body 60 is installed in contact with the tank 63.

On the left and right sides of the upper end of the sieve 60, a water supply cap 69 having a safety valve 67 and an opening / closing valve 69a communicating with the tank 63 is provided. The cooking water introduced through the water supply cap 69 is heated by the coil 65 to be steam, and the cooking water is cooked by the heat and pressure of the steam. At this time, when the pressure of the steam is more than the predetermined pressure, the steam is discharged through the safety valve (67).

Pressure cooker according to this embodiment is provided with a sensing device for detecting the water level of cooking water. In detail, the conductor sensor 70 is installed in the part of the tank 63 located above the coil 65. The sensor 70 is energized when it is submerged in the cooking water, and is not energized when the water level of the water is reduced and the sensor 70 is not submerged in the cooking water. The power switch 85 (see FIG. 3) receives the energized and non-energized signals of the power supply to sense the water level of the cooking water.

3 is a diagram illustrating a circuit configuration of a sensing device according to an embodiment of the present invention.

When the on / off switch 81 is turned on, power is supplied to the front switch 85 through the terminal 83, and the sensor 70 installed in the main body 60 detects the water level. That is, when the sensor 70 is locked to the water supplied into the tank 63 through the water supply cap 69, the energization signal is sent to the prot switch 85. Then, when the cooking water is evaporated and the water level is reduced, the sensor 70 is not submerged. Then, the sensor 70 sends a non-energized signal to the prot switch 85, whereby the prot switch 85 causes the buzzer 87 to ring and the lamp 89 to light up at the same time. Occurs. Then, the user cuts off the power supply and opens the on / off valve 69a, injects the cooking water into the water supply cap 69, and then operates the pressure cooker again.

The front switch 85 according to the present embodiment is preferably provided for the low sensitivity. This is because if the switch 85 is for high sensitivity it can detect the steam to send an energization signal.

As described above, the pressure cooker according to the present invention can detect the current amount of water, the water level during cooking. Therefore, it is possible to prevent cooking in the absence of water, thereby preventing damage to the coil and the product.

In the above, the present invention has been described in accordance with one embodiment of the present invention, but those skilled in the art to which the present invention pertains have been changed and modified without departing from the spirit of the present invention. Of course.

Claims (1)

A cylindrical body with an upper surface open; A lid for opening and closing the opening surface of the main body; A tank installed inside the main body and storing water for cooking; An inner cylinder installed inside the main body to come into contact with the tank and containing cooking objects; A coil installed in the tank to heat cooking water stored in the tank; A water supply cap installed at one side of an upper end side of the main body so as to communicate with the tank and having an opening / closing valve supplied with cooking water; A safety valve installed at the other end of the upper end side of the main body so as to communicate with the tank, and for discharging steam when the pressure of the tank becomes higher than a predetermined value; A conductor sensor installed in the tank of the upper portion of the coil and energized when the water is submerged in the cooking water and not energized when the water is submerged in the cooking water; Prote switch receiving a signal from the sensor; And a buzzer and a lamp for generating an alarm signal by the signal transmitted from the prot switch.