RU16441U1 - DEVICE FOR WATER BOILING - Google Patents

Abstract

1. A device for boiling water, containing a vessel, a heating element and a temperature-sensitive controller with bimetallic actuators breaking the power supply circuit of the electric heating element when steam is generated and there is no water, characterized in that it further comprises a safety switch, comprising a coil spring with a 90 bent end its axis installed in the socket of the regulator housing and held in normal use by the device in a compressed state a forming retaining element in the form of a rod installed with the possibility of sliding in the direction of its axis within the channel in the regulator body, the free end of the rod is in thermal contact with part of the heater or directly with the device body, said rod being able to deform when the device is heated above a certain critical temperature, the bent end of the spring is placed with the possibility of coupling it with a leaf spring with a normally closed electrical contact m elektronagrevatelya.2 supply circuit. The device according to claim 1, characterized in that at the free end of the rod an annular groove is made having a reduced cross section. The device according to claim 2, characterized in that the pushing rod is made of reinforced fiberglass with a melting point of approximately ≥260 ° C. The device according to claim 1 or 2, characterized in that the rod is made of polyamide fiber, for example, nylon.

Description

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DEVICE FOR BOILING WATER

The utility model relates to household appliances, namely to electric vessels for boiling water, in particular, to dummies.

A device for boiling water containing a heating element and a thermosensitive electric retractor in the form of a block containing a thermosensitive switching element that can interrupt the supply of electric power to the heater in case of overheating of the heating element and repeatedly restore the power supply when TeMnepaiypa becomes lower than critical 1071206, class A47 J 27/21, publ. 01/30/84, bull. Number 4.

In the known device, a bimetallic plate in contact with the cold end of the heating element is used as a heat-sensitive controller. However, the potential sticking of a heated high-current contact or the resulting mechanical fatigue of bimetal makes such a thermostat insufficiently protective against accident for household electrical appliances of widespread use.

The utility model solves the problem of increasing the reliability and safety of the device.

The problem is solved in that the device for boiling water containing a vessel, a heating element and a heat-sensitive controller with bimetallic actuators breaking the power supply circuit of the electric heating element when steam is generated and in the absence of water, additionally contains a safety switch that includes a coil spring with an end bent 90 k its axis, mounted in the socket of the regulator housing and held at normal

MKI: A47J27 / 21 using the device in a compressed state by means of thermo-deformable

a retaining element in the form of a rod installed with the possibility of sliding in the direction of its axis within the channel in the regulator body, the free end of the rod is in thermal contact with the heater part or directly with the device body, said rod being able to deform when the device is heated above a certain critical temperature, the bent end of the spring is placed with the possibility of coupling it with a leaf spring with a normally closed electrical contact in the power circuit I have an electric heater.

The problem is also solved by the fact that at the free end of the rod is made annular vpochka having a reduced cross section.

The rod may be made of polyamide fiber, for example, nylon or fiberglass reinforced.

The essence of the utility model is illustrated in FIG. 1,2 and 3.

Figure 1 shows a General view of the proposed device, where 1 is a vessel, 2 is an electric heating element, 3 is a thermostat with a safety switch.

In FIG. Figures 2 and 3 show a temperature regulator with a safety switch in two positions, where 4 is a coil spring with a bent end 5, 6 is a socket, 7 is a slotted slot, 8 is a holding element in the form of a rod, 9 is a channel, 10 is a leaf spring, 11 - electrical contact.

The device (figure 1) contains a vessel 1, an electric heating element 2 and a temperature regulator 3 with a safety temperature regulator.

The safety switch device is shown in more detail in FIG. 2 and 3: it includes a coil spring 4 installed in the socket 6 of the temperature controller 3 with a slotted slot 7 in its wall. The bent end 5 of the spring 4 forms a normally closed voltage that could have been supplied to the heating element. Spring 4 at normal

the operating mode of the device is held in a compressed state with the help of a holding element in the form of a rod 8, mounted with the possibility of sliding in the direction of its axis within the channel 9 in the body of the temperature controller 3 and zashirivaemy free end into the head of the electric heating element 2 of the device. The bent end 5 of the spring 4 is placed with the possibility of coupling it with a leaf spring 10 with an electrical contact 11. The main bimetallic actuator (not shown in the figure) reacts to overheating of the vessel due to the inclusion of the device without water or in boiling it off.

The device operates as follows.

In normal operation, when the coil spring 4 is compressed by the rod 8, a gap remains between the bent end 5 of the spring 4, which actuates the leaf spring 10, and the leaf spring 10. Under these conditions, the electrical contact 11 is usually freely opened and closed in response to the action of the bimetallic actuator, which responds to the boiling of a liquid in the vessel and breaks the power supply circuit of the electric heating element 2.

However, in the event of a failure (accident) in the operation of the main bimetallic actuator of the open circuit of the power supply of the electric heating element 2 and its overheating or overheating directly of the vessel body 1 above a critical temperature, the free end of the rod 8 is deformed, as a result of which the spring 4 is unclenched to such an extent that it gives the ability to bend the end 5 of the spring 4 to actuate the leaf spring 10 and open the contact 11, that is, turn off the power to the device 1.

Claims (4)

1. A device for boiling water, containing a vessel, a heating element and a temperature-sensitive controller with bimetallic actuators breaking the power supply circuit of the electric heating element when steam is generated and there is no water, characterized in that it further comprises a safety switch, comprising a coil spring with an end bent 90 ^o to its axis, installed in the socket of the regulator housing and held in normal use by the device in a compressed state by means of thermo a deformable retaining element in the form of a rod installed with the possibility of sliding in the direction of its axis within the channel in the regulator body, the free end of the rod is in thermal contact with a part of the heater or directly with the device body, said rod being able to deform when the device is heated above a certain critical temperature, the bent end of the spring is placed with the possibility of coupling it with a leaf spring with a normally closed electrical contact volume in the power supply circuit of the heater.  2. The device according to claim 1, characterized in that at the free end of the rod an annular groove is made having a reduced cross section. 3. The device according to claim 2, characterized in that the pushing rod is made of reinforced fiberglass with a melting point of approximately ≥260 ^o C. 4. The device according to p. 1 or 2, characterized in that the rod is made of polyamide fiber, for example, nylon.