WO2011130911A1 - Electric kettle capable of automatically cutting off steam channel - Google Patents

Abstract

An electric kettle capable of automatically cutting off the steam channel comprises a kettle body (1) and a switch button (2) which intercommunicates with the inside of the kettle body (1) via steam channel components. The steam channel components include a steam pipe (3) and a steam box (4). Two ends of the steam pipe (3) connect to the inside of the kettle body (1) and the inside of the steam box (4) respectively. A steam sensing switch (5) whose one side is provided with a bimetal strip (6) and the other side is provided with a movable rob (7) and a pair of electric contacts (8,9), is arranged spanningly in the steam box (4). The movable rob (7) is connected with an end of the switch button (2) whose middle part is hinged on the steam box (4). A piston device (10) is arranged at the connection between the steam pipe (3) and the steam box (4). A connecting rob (11) whose end is hinged on the steam box (4) and middle part is sleeved on the switch button (2), is connected with the piston device (10).

Description

Electric kettle for automatically shutting off steam passage

 Technical field

 The utility model relates to an electric heating device, in particular to an electric heating pot for automatically shutting off a steam passage.

 Background technique

Most of the current electric kettles have a heating automatic shut-off function. When the water or other liquid in the kettle is heated to boiling, the power supply of the electric kettle is automatically turned off, making the electric kettle more convenient when used. Most of the current products use thermal elements such as bimetals or memory alloy components to achieve the above automatic shutdown function.

In products using bimetallic components, the steam channel is used to guide the steam to the position of the bimetal, so that the bimetal can sense the temperature change inside the kettle in time, and ensure that the bimetal can be immediately made when the liquid in the kettle boils. The sensor switch operates to turn off the power. However, the current problem with this product is that when the electric kettle power is automatically disconnected, the steam in the kettle will continue to enter the position where the bimetal is located. The bimetal will continue to sense the high temperature, and the sensor switch resets slowly. The user needs to reheat the liquid in the kettle. In addition, the steam continuously condenses on the steam passage, and the steam condensate will overflow further to the outside of the kettle, causing the user to have the illusion of water leakage and causing troubles in cleaning.

 Utility model content

In order to solve the above problems, the utility model provides an electric heating pot which is convenient to use, has a quick reset of the steam induction switch, and can effectively reduce the steam condensed water to automatically shut off the steam passage.

 The technical solution adopted by the utility model to solve the problem is:

An electric kettle for automatically shutting off a steam passage, comprising a kettle body and a switch button mounted on the kettle body, the switch button communicating with the interior of the kettle body through a steam passage assembly, the steam passage assembly comprising a steam pipe and a steam box The two ends of the steam pipe are respectively communicated with the inside of the kettle body and the inside of the steam box, wherein the steam box is provided with a steam-sensing switch, and the side of the steam-sensing switch and the steam pipe is provided with a bimetal, the steam sensor switch The other side is provided with a movable rod that is linked with the bimetal and a pair of electrical contacts that are actuated by the movable rod, and the movable rod is connected with the end of the switch button, and the middle of the switch button is hinged to the steam box. The connecting portion between the steam pipe and the steam box is provided with a piston device for controlling the passage of the passage. The piston device is connected with a connecting rod. The end of the connecting rod is hinged to the steam box, and the middle portion of the connecting rod is sleeved on the switch button. on.

Wherein, the piston device comprises a piston head for cutting off the passage between the steam pipe and the steam box and an extension arm extending outside the steam box, the end of the extension arm is provided with a through hole, the connecting rod and the through hole The corresponding position has a column that is inserted into the through hole.

Further, the steam box is installed at the bottom of the kettle body, and the steam pipe is an elongated circular pipe, and the steam box is connected to the upper position inside the kettle body through the elongated round pipe.

 Further, one end of the steam pipe communicating with the interior of the kettle body is sleeved with a pipe cover, and an outlet of the pipe cover is disposed at a side position of the pipe cover.

Further, the steam box includes an upper cover, a lower cover and a middle plate, and the upper cover and the lower cover form a steam chamber with a steam sensing switch, the middle plate is fixedly installed in a middle portion of the steam chamber, and the middle plate is away from the steam sensing switch. The side is provided with an opening, and the lower cover is provided with a discharge hole at a position corresponding to the opening.

The steam induction switch of the utility model communicates with the interior of the kettle body through a steam passage formed by the steam pipe and the steam box. When the user presses the switch button to perform heating, the electrical contact on the steam induction switch is turned on, and the heating circuit is energized, and at the same time The piston device at the junction between the steam pipe and the steam box operates under the leverage of the connecting rod, so that the steam passage is in a clear state, and when the liquid inside the kettle body is heated to boiling, the steam generated by the steam is transmitted to the steam through the steam passage. On the side of the bimetal of the sensor switch, the deformation of the bimetal causes the action bar to move on the other side of the switch, the two electrical contacts are disconnected, the heating circuit is disconnected, and the movable lever drives the switch button to act, and the switch button replies In the normal position, the switch button will drive the link during the recovery process, and the lever acts to activate the connecting rod together with the piston device. The piston device blocks the steam passage, and the excess steam cannot continue to pass. The above working process can be used to simultaneously power off. And the effect of shutting off the steam passage, the steam passage is cut after the heating is completed The temperature at which the bimetal is located will drop rapidly, and it will return to the normal position in a short period of time. Therefore, the steam sensing switch has a fast reset speed. In addition, after the steam passage is turned off, the steam pipe and Only steam will remain inside the steam box. After condensation, only a small amount of condensed water will overflow, which will not cause the user to have the illusion of water leakage. It is easy to use and clean.

 DRAWINGS

 The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

 Figure 1 is a schematic cross-sectional view showing the entire structure of the present invention;

 Figure 2 is a schematic structural view of a steam passage assembly;

 Figure 3 is a schematic exploded view of the steam passage assembly;

 Figure 4 is a schematic view of the internal decomposition structure of the steam box;

 Figure 5 is a schematic diagram of the internal decomposition structure of another angle of the steam box;

 Figure 6 is a bottom view of the exploded structure of the steam box.

 detailed description

 Referring to FIG. 1 to FIG. 6 , an electric kettle for automatically shutting off a steam passage provided by the utility model comprises a kettle body 1 and is mounted on the kettle body 1 The upper switch button 2, in order to enable the automatic shut-off function according to the temperature inside the kettle body 1, the switch button 2 communicates with the interior of the kettle body 1 through a steam passage assembly, which includes a steam pipe 3 and steam box 4, the two ends of the steam pipe 3 are respectively connected with the inside of the kettle body 1 and the inside of the steam box 4, the steam pipe 3 and the steam box 4 When the internal communication is connected, the direct connection can be used or the auxiliary member 23 can be used for the transfer. The steam box 4 is installed with a steam sensing switch 5 and a steam sensing switch 5 . The side connected to the steam pipe is provided with a bimetal 6 , and the other side of the steam sensing switch 5 is provided with a movable rod 7 interlocked with the bimetal 6 and a pair of electrical contacts that are actuated by the movable rod 7 to open and close. 8, 9 The movable rod 7 is connected to the end of the switch button 2, and the switch button 2 is provided with a fulcrum 22 on both sides thereof, and the switch button 2 is hinged to the steam box 4 through the fulcrum 22, the steam tube 3 A piston device 10 for controlling the passage of the passage is provided at a joint with the steam box 4, and a connecting rod 11 is attached to the piston device 10, and the end of the connecting rod 11 is hinged to the steam box 4, and the connecting rod 11 The middle portion is sleeved on the switch button 2.

 In the actual product, the switch button 2 extends out of the kettle 1 The outer part is used as a common operation end for controlling the on/off of the electric heating pot. The electric contact 8 and the electric contact 9 on the steam induction switch 5 are connected in series to the heating circuit of the electric heating pot, when the electric contact 8 And 9 When connected, the heating circuit works. When the electrical contact 8 and the electrical contact 9 are disconnected, the heating furnace stops working, and the opening and closing between the electrical contact 8 and the electrical contact 9 is controlled by the movable rod 7, and the movable rod 7 It can be controlled by the switch button and can be controlled by the bimetal 6 that is linked with it. When the user presses the switch button 2 to heat, the electrical contact 8 and the electrical contact 9 Turn on, the heating circuit is energized, and the piston device 10 at the junction between the steam pipe 3 and the steam box 4 is at the connecting rod 11 Under the action of the lever, the steam passage is in a clear state. When the liquid inside the kettle body is heated to boiling, the generated steam is transmitted to the bimetal 6 side of the steam sensing switch 5 through the steam passage, and the bimetal 6 The deformation generates a force to move the movable rod 7 on the other side of the switch, the two electrical contacts 8 and 9 are disconnected, the heating circuit is disconnected, and the movable rod 7 drives the switch button 2 to operate, and the switch button 2 Returning to the normal position, the switch button 2 will drive the connecting rod 11 during the recovery process, and the lever 11 is actuated together with the piston device 10 by the lever action, and the piston device 10 By blocking the steam passage, the excess steam cannot continue to pass, and the above-mentioned working process can achieve the effect of simultaneously powering off and turning off the steam passage. Since the steam passage is cut off after the heating is completed, the temperature at the position where the bimetal is located is rapidly lowered, and it can be returned to the normal position in a short time, so the steam sensing switch has a fast reset speed, and in addition, the steam passage After being shut off, only steam will remain inside the steam pipe and steam box. After condensation, only a small amount of condensed water will overflow, which will not cause the user to have the illusion of water leakage. It is easy to use and clean.

 As a preferred embodiment, the piston device 10 includes a piston head for intercepting the passage between the steam tube 3 and the steam box 4. And an extension arm 13 extending from the outside of the steam box 4, the extension arm 13 is provided with a through hole 14 at the end thereof, and the column 11 is inserted into the through hole 14 at a position corresponding to the through hole 14 15 . With the above structure, the piston head 12 portion of the piston device 10 can be moved inside the steam box 4, and the extension arm 13 is disposed outside the steam box for facilitating connection with the connecting rod 11 The connection is made and the piston head 12 is limited to a certain range of motion. In the present embodiment, when the piston head 12 moves upward with the connecting rod 11, the steam passage is closed, when the piston head 12 When moving down, the steam passage opens.

 Further, as a further preferred embodiment, the steam box 4 is mounted to the bottom of the kettle body 1, the steam pipe 3 In the case of an elongated circular tube, the steam box 4 is connected to the upper position of the inside of the kettle body 1 through an elongated circular tube. With this structure, the steam inside the kettle body 1 does not flow into the steam box 4 in a large amount, and the steam tube 3 only Pot body 1 A small portion of the high temperature steam inside the interior is introduced into the steam box 4. As a still further preferred embodiment, the end of the steam pipe 3 communicating with the inside of the kettle body is sleeved with a pipe cover 16 , and the outlet of the pipe cover 16 is disposed on the pipe cover In the side position of the 16 tube, the steam tube 3 is provided with the tube cover 16 to prevent the condensation water droplets formed on the lid of the electric kettle from dripping, and the amount of condensed water in the steam passage is kept to a minimum.

 Preferably, the steam box 4 includes an upper cover 17, a lower cover 18 and a middle plate 19, and the upper cover 17 and the lower cover 18 Forming a steam chamber with the steam sensing switch 5, the middle plate 19 is fixedly mounted in the middle of the steam chamber, and the side of the middle plate 19 away from the steam sensing switch 5 is provided with an opening 20, the lower cover 18 and the opening 21 The corresponding position is provided with a discharge hole 21 which is provided to guide the steam, and the discharge hole 21 provided in the lower cover 18 can discharge the condensed water formed in the steam box 5.

As can be seen from the above description of the structure of the present invention, the steam passage assembly is a unitary structure that is relatively independent of the other components of the electric kettle, and can be easily operated when it is required to be disassembled or repaired.

Claims (5)

1. An electric kettle for automatically shutting off a steam passage, comprising a kettle body (1) and a switch button (2) mounted on the kettle body (1), the switch button (2) passing through the steam passage assembly and the kettle body (1) Internal communication, characterized in that the steam passage assembly comprises a steam pipe (3) and a steam box (4), and two ends of the steam pipe (3) are respectively communicated with the inside of the kettle body (1) and the inside of the steam box (4). The steam box (4) is provided with a steam sensing switch (5), a side of the steam sensing switch (5) communicating with the steam tube is provided with a bimetal (6), and the steam sensing switch (5) is another The side is provided with a movable rod (7) which is linked with the bimetal (6), and a pair of electrical contacts (8, 9) which are actuated by the movable rod (7), the movable rod (7) and the switch button ( 2) end connection, the middle of the switch button (2) is hinged to the steam box (4), and the connection between the steam tube (3) and the steam box (4) is provided for controlling the passage of the passage Piston device (10), connecting rod (11) to piston device (10), connecting rod Terminal 11) is hinged to the steam box (4), the central rod (11) is sleeved on the switch button (2).
2. An electric kettle for automatically shutting off a steam passage according to claim 1, wherein said piston means (10) comprises a piston head for intercepting a passage between the steam pipe (3) and the steam box (4) (12) and an extension arm (13) extending outside the steam box (4), the end of the extension arm (13) is provided with a through hole (14), and the connecting rod (11) corresponds to the through hole (14) The position has a column (15) that is inserted into the through hole (14).
3. An electric kettle for automatically shutting off a steam passage according to claim 1, wherein said steam box (4) is mounted to the bottom of the kettle body (1), and said steam tube (3) is an elongated circle. The tube, the steam box (4) is connected to the upper position inside the body (1) by a long round tube.
4. The electric kettle for automatically shutting off the steam passage according to claim 1 or 3, characterized in that the end of the steam pipe (3) communicating with the inside of the kettle body is sleeved with a pipe cover (16) and a pipe cover (16). The outlet of the ) is placed at the side position of the tube cover (16).
5. An electric kettle for automatically shutting off a steam passage according to claim 1, wherein said steam box (4) comprises an upper cover (17), a lower cover (18) and a middle plate (19), said upper The cover (17), the lower cover (18) and the steam sensing switch (5) form a steam chamber, the middle plate (19) is fixedly mounted in the middle of the steam chamber, and the middle plate (19) is away from the side of the steam sensing switch (5) An opening (20) is provided, and the lower cover (18) is provided with a discharge hole (21) at a position corresponding to the opening (21).

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