CN2346354Y - Float lifting automatic device for preventing burning dry - Google Patents

Abstract

The utility model relates to a device for controlling the circuit on-off of liquid heaters through the rise and fall of a float. In the device, a float chamber is installed on the lower part of the inner side wall of the container, a gateway is arranged on the float chamber wall, and a control chamber is installed on the external wall of the container corresponding to the float chamber. A left and a right reeds connected with an electric heating device are installed in the control chamber, and the upper end of one of the reeds is connected with a magnetic block which can attract the float to make the contact points of the left and the right reeds contact with each other.

Description

The automatic anti-dry burning device of float lift

The utility model is the device that connecting and disconnecting of the circuit in the liquid heater is controlled in a kind of lifting that utilizes float.

Existing electric kettle does not have controller mostly, in case the situation that water-in-kettle is dryouied takes place, very easily causes accidents such as heater is burnt.Once there was the people that a lever floating ball device is set on the heater of insulating pot for this reason, and utilized the lifting of this ball float to float the closure and the disconnection that come the control electrode contact by lever.Its shortcoming is for electric kettle, and its structure is huger and complicated.

The purpose of this utility model is good, simple in structure, the easy to use automatic anti-dry burning device of float lift of a kind of result of use of design.

Its main technical schemes is in the side inner walls bottom of container float chamber to be installed, in float chamber, place the float of magnetic conduction, on the wall of float chamber, the gateway is arranged, at container outer wall the control room is installed corresponding to float chamber, the left and right sides reed that is connected with electric calorifie installation is installed in the control room, the magnetic block that after a reed upper end connection therein can hold mutually with float the contact on the reed of the left and right sides is in contact with one another, used float is shaped as the sealed spheroid or the box body of hollow.

The utility model has the advantages that simple in structurely, compare with other anti-dry burning devices that this structure is positioned at the float chamber part shape of kettle as a less box body with holes, float fluctuates in this capsule, and is relatively more succinct, is easy to be accepted by the user.The reed of contact-carrying is set in the control room corresponding with float chamber, and the upper end of a reed connects magnetic block therein, and when the float of magnetic conduction rose to the magnetic block position, float and magnetic block held mutually, make the reed that connects magnetic block contact the circuit connection with contact on another reed.Therefore, the disconnection of its contact and closed reliable and safety.

Fig. 1 is a structure chart of the present utility model

As shown in the figure: container 1 is by high temperature resistant, corrosion resistant nonmagnetic substance manufacturing, utilize socket 10 that is positioned at the wall inboard and the fixed head 11 that is positioned at the wall outside that the electric calorifie installation 13 of the liquid 14 of heating container inner chamber 15 is installed in the inwall lower end of container 1, container inner wall on electric calorifie installation is installed float chamber 3, placing in float chamber can be with the float 4 of liquid free lifting, the gateway 2 that can allow liquid pass in and out is set on the wall of float chamber, 12, at container outer wall control room 6 is installed corresponding to float chamber, the left and right sides reed 8 that is connected with the lead of electric calorifie installation is installed in the control room, 9, the contact 7 that can be in contact with one another is arranged respectively on reed top, connect the magnetic block 5 that can hold float in the upper end of right reed 9.

When if this device only is used for anti-dry, the last plane of float chamber can be arranged on the position of magnetic block, make float distance of run on be limited to the magnetic block place, so that the attraction of magnetic block if want this device is used to control the outage automatically of water boiling back simultaneously, can be located at magnetic block top certain altitude to the last plane of float chamber, so that after the bubble of generation enters float chamber after the water boiling, float is lifted, make float break away from magnetic block, the contact is disconnected and cut off the power supply.

Its operation principle is: when anhydrous in the insulating pot or the water yield seldom the time, float is positioned at the float chamber bottom, and after the water filling, float is at buoyancy of water effect float downward.When the float of magnetic conduction rises to the pairing height of magnetic block in the control room, because attracting each other of magnetic and iron holds magnetic block and float mutually, thereby the contact on the reed is contacted tightly, circuit turn-on, electric calorifie installation is started working, and water is heated.

When the water level in the kettle drops to height below the magnetic block, the float loss of buoyance that is held by magnetic block, under himself weight effect, overcome magnetic attraction and fall, at this moment, magnetic block disconnects power supply owing to lose the homing with the attraction of float, thereby the electric calorifie installation of guaranteeing to be arranged in container bottom only could energising work when being immersed in water, reaches the purpose that prevents dry combustion method.

Claims (2)

1, the automatic anti-dry burning device of float lift, it is characterized in that float chamber (3) being installed in the side inner walls bottom of container (1), in float chamber, place the float (4) of magnetic conduction, on the wall of float chamber, the gateway is arranged, at container (1) outer wall control room (6) is installed corresponding to float chamber, left and right sides reed (8), (9) that are connected with electric calorifie installation (13) are installed, the magnetic block (5) that after a reed upper end connection therein can hold mutually with float the contact (7) on the reed of the left and right sides is in contact with one another in the control room.

2, according to the described anti-dry burning device of claim 1, feature is the sealed spheroid that is shaped as hollow or the box body of float (4).

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