KR20170083982A

KR20170083982A - Device for preventing over heat of gas burner of gas range

Info

Publication number: KR20170083982A
Application number: KR1020170082783A
Authority: KR
Inventors: 장승훈
Original assignee: 주식회사 스타리온
Priority date: 2017-06-29
Filing date: 2017-06-29
Publication date: 2017-07-19

Abstract

The present invention proposes an apparatus for accurately detecting and preventing overheating of a gas range. The apparatus of the present invention is an apparatus for preventing overheating of a burner comprising a burner body, a burner head provided on the burner body, and a burner cap provided on the burner head. A pair of fastening bosses 32 formed on the upper surface of the burner body and each having a fastening hole 34 formed with a thread; A support bracket 22 coupled to the fastening boss by a pair of fastening bolts; A support portion 20 supported by the support bracket and extending upward; A bimetal switch 14 for sensing the overheat temperature of the heating container and a spring 18 for elastically supporting the bimetal switch upward, And a bimetal casing (C) provided in the bimetal casing. The bimetallic casing (C) is provided through the through-hole of the burner head and the through-hole of the burner cap, and is movable downward by the heating container as it contacts the bottom surface of the heating container.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a device for preventing overheating of a gas range,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas range, and more particularly, to a gas range overheat prevention apparatus configured to stop supply of gas when a heating container heated by a burner of a gas range is overheated.

In the gas range, a device for preventing overheating of the container by the burner is generally provided. For example, Korean Patent No. 10-1003791 also proposes a device for preventing such overheating. However, the bimetallic switch used in this conventional technique is installed to detect the temperature change of the radiant heat generated on the surface of the heating vessel.

Here, the bimetallic switch reacts with the radiant heat generated in the container heated by the burner in the state of containing the food. Here, the bimetallic switch must be installed in the vicinity of the burner of the gas range. Since the bimetallic switch is installed to detect radiant heat in a non-contact manner, there is a certain distance between the mounted position and the container. In addition, various types of containers for heating food are used. If the heating container has various shapes, the distance from the bimetal switch may be different, which may lead to different temperature sensing results.

Also, depending on the heating container of various materials, the emission pattern of the radiant heat differs. In this case, the result of sensing by the bimetal switch may be changed. Thus, depending on the shape or material of the heating vessel, the bimetallic switch may experience a different result, which is expected to ultimately serve as a disadvantage of lowering the reliability.

An object of the present invention is to provide an apparatus for preventing overheating of a gas range which can prevent overheating of a container due to combustion of a burner by sensing the temperature of the container to be heated most accurately.

The object of the present invention is to substantially improve the reliability of overheating prevention, and it is to be understood that this is equivalent to providing a further improved gas range in terms of safety.

The present invention is a burner overheating prevention device comprising a burner body, a burner head installed on the burner body, and a burner cap installed on the burner head; A pair of fastening bosses formed on an upper surface of the burner body and having threaded fastening holes; A support bracket coupled to the fastening boss by a pair of fastening bolts; A support supported by the support bracket and extending upward; A bimetal switch for supporting the bimetal switch in a state where the bottom surface is supported through the support portion and movable upward and downward by a predetermined interval, a bimetal switch for sensing an overheating temperature of the heating container, and a bimetal casing having a spring for elastically supporting the bimetal switch upward .

The bimetallic casing is installed through the through-hole of the burner head and the through-hole of the burner cap. The bimetal casing is movable downward by the heating container as it contacts the bottom surface of the heating container. .

According to another embodiment of the present invention, the connection line of the bimetallic switch is installed so as to pass through the inside of the burner body through the inside of the support portion inside the bimetal casing. The bottom of the bimetallic casing through which the supporting part penetrates is formed with a cylindrical upper and lower guide part of a certain height for guiding the up and down movement of the bimetallic casing.

According to the present invention, by using a bimetallic switch that directly reacts to the set overheat temperature in consideration of the overheated state of the heating container, it is possible to omit the electronic parts such as the microprocessor and to simplify the configuration. Such a bimetallic switch can be expected to have an advantage that it is mounted inside the casing in direct contact with the heating vessel and does not allow an error in the measurement of the overheating temperature. This can substantially ensure the reliability against overheating .

In the present invention, the cap constituting the upper end portion of the bimetallic casing having the bimetal switch is configured to have a constant area, so that the cap can sufficiently contact any type of heating container. Therefore, it can be seen that the overheating state of the overheating vessel can be accurately detected and switched.

Also, in the present invention, the bimetallic casing is configured to be movable up and down for a predetermined period, and a supporting portion for supporting the bimetal switch in a vertically movable manner is constructed so that it can be supported simply and firmly with respect to the burner body. Therefore, it is expected that the damage caused by the durability and the external force of the overheat prevention device can be substantially prevented.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view of a burner equipped with an overheating prevention device of the present invention; Fig.
2 is an exploded perspective view of a burner equipped with the overheat prevention device of the present invention.
3 is an exemplary cross-sectional view without a heating vessel;
4 is an exemplary cross-sectional view of a state in which the heating vessel is raised.

Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings. 1 and 2, the burner used in the gas range includes a burner body 30, a burner head 36 mounted on the burner body 30, And a burner cap 38 which is placed on top of the burner cap 38 and forms a flame by combustion therebetween.

The overheating prevention device according to the present invention is installed on the burner body 30. The overheating prevention device is formed in the center of the through hole 37 and the burner cap 38 formed at the center of the burner head 36 And passes through the through hole 39 to maintain a state of protruding upward. The overheat prevention device of the present invention includes a bimetal casing C having a bimetal switch 14 and a container 10 and a cap 12.

A bimetal switch 14 and a bimetal switch (not shown) are provided in a bimetal casing C composed of a container 10 having an open top and an open top and a cap 12 for opening and closing an open upper end of the container 10, 14 are elastically supported upward by a spring 18. It is preferable that an insulating washer 16 is interposed between the bimetal switch 14 and the spring 18.

The casing C is supported so as to be movable in a predetermined section (a range that can be compressed by a spring) in the vertical direction by the support portion 20 which is arranged in the vertical direction and fixed to the burner body 30 in an upright state . When the container is actually placed on the upper portion of the burner, the lower surface of the heating container comes into contact with the upper end of the above-described casing (C), i.e., the cap 12.

Therefore, when a load of the heating container is applied to the bimetallic casing C, the casing C is designed to be downwardly downward for a certain period of time. FIG. 3 shows a state in which the heating container is not placed on the burner. FIG. 4 shows a state in which the heating container is put on the burner and the bimetallic casing C moves downward and the spring 18 is compressed Respectively.

It can be seen that this configuration is a design that allows the bimetallic casing (C) of the present invention to come into contact with the bottom surface of the heating vessel in a stable state at all times. In the present invention, the cap 12 forming the upper part of the bimetal casing C is formed to have a certain area so as to secure sufficient contact with the container.

The upper end of the support portion 20 for supporting the bimetal casing 10 so as to be movable up and down supports the bimetal casing 10 in a state of passing through the lower surface of the bimetal casing 10, Is supported on the burner body 30 in an upright state. The present invention adopts a rigid structure in which the support bracket 22 is fixed to the lower end of the support portion 20 and the support bracket 22 is fixed to the burner body 30 using the pair of fastening bolts 26 .

In the present invention, the fact that the bimetallic casing (C) is movable in the vertical direction at a predetermined interval has an important meaning in terms of stable contact with the heating container and detection of the overheating temperature. In the present invention, the bottom surface of the container 10 constituting the lower part of the bimetal casing C is penetrated by the support part 20. In the present invention, in order to more securely guide the upward and downward movement of the casing C, The upper and lower guide portions 10A are formed on the bottom surface of the support portion 10 so as to be in contact with the support portion 20 within a predetermined range.

The upper and lower guide portions 10A are formed in a tubular shape having a small height, for example, and are configured to have a constant supporting force with respect to the support portion 20 penetrating the inside thereof. The upper and lower guide portions 10A having a predetermined height in the up-and-down direction with respect to the fixed support portion 20 are formed on the bottom surface of the container 10 so that the bimetallic casing C can firmly support the up- will be.

The lower end of the support portion 20 is integrated with the support bracket 22 by press-fitting and / or welding. A pair of fastening bolts 26 fix the support bracket 20 to the burner body 30 by using a pair of fastening holes 24 formed in the support bracket 22. A pair of fastening bosses 32 having threaded fastening holes 34 are formed in the upper portion of the burner body 30 so that the fastening bolts 26 are screwed .

The bimetallic switch 14 of the present invention is for cutting off the gas supplied to the gas burner in the event of a substantial overheating situation. The gas burner is provided with a magnetic power unit (MPU) for interrupting the gas supplied for combustion. When the bimetallic switch 14 is in the off state, the MPU is in a state in which it can not supply power by the heat power.

The connection line 28 for electrically connecting the bimetallic switch 14 and the MPU in the present invention is also connected to the MPU through the burner body 30 while passing through the inside of the bimetal casing C have. In this way, the connection line 28 is also allowed to communicate with the interior of the bimetal casing C, thereby preventing damage due to external force and maximizing the reliability of signal transmission. And this connection line 28 will be electrically connected to the other part through the connector 29 provided at the end thereof.

When the heating container is put on the burner equipped with the overheat preventing device having the above-described configuration, the state shown in Fig. 3 becomes a state as shown in Fig. That is, the bimetal casing C is pressed downward by the heating container, and accordingly, the spring 18 is compressed. The cap 12 having a constant surface area has a function of contacting all the heating vessels 12, and the spring 18 also maximizes the reliability of contact.

When the burner is ignited and combustion is started, the bimetal switch 14 inside the bimetallic casing C maintains the on state at a temperature lower than the set temperature. Accordingly, the bimetallic switch 14 maintains the ON state at a set temperature (for example, 300 DEG C) that is determined to be overheated, and accordingly the MPU is normally supplied with the power while the gas is supplied normally.

However, when the vessel is heated to the set heating temperature, the bimetallic switch 14 can most accurately read the temperature of the heating vessel in contact with the bimetallic casing C. When the temperature of the vessel reaches the set heating temperature, the bimetallic switch 14 is substantially switched to the OFF state, which results in the power supply to the MPU being turned off, and ultimately the gas supply to the burner is shut off .

As described above, according to the present invention, the temperature of the container to be heated is sensed by direct contact, and when the temperature reaches the set heating temperature, the bimetallic switch is turned off to ultimately stop the supply of gas. Able to know. It will be obvious that other modifications are possible within the scope of the present invention, and the scope of protection is to be interpreted based on the description of the claims.

10 ..... container
12 ..... cap
14 ..... Bimetal switch
18 ..... spring
20 ..... support
22 ..... Support bracket
24 ..... fasteners
30 ..... burner body
36 .... burner head
38 ..... burner cap

Claims

A burner overheating prevention device comprising a burner body, a burner head installed on the burner body, and a burner cap installed on the burner head;
A pair of fastening bosses formed on an upper surface of the burner body and having a pair of fastening holes each formed with threads;
A support bracket coupled to the fastening boss by a pair of fastening bolts;
A support supported by the support bracket and extending upward; And
A bimetal switch for supporting the bimetal switch in a state where the bottom surface thereof is supported through the support part and movable upward and downward by a predetermined interval, a bimetal switch for sensing the overheating temperature of the heating container, and a bimetal casing having a spring for elastically supporting the bimetal switch upward Being;
Wherein the bimetallic casing is installed through the through-hole of the burner head and the through-hole of the burner cap, and is movable downward by the heating container as it contacts the bottom surface of the heating container.

The method according to claim 1,
The connecting line of the bimetal switch is installed to pass through the interior of the bimetal casing and the inside of the burner body through the inside of the support part;
And a tubular upper and lower guide portion (10A) having a predetermined height for guiding upward and downward movement of the bimetallic casing is formed on the bottom surface of the bimetallic casing through which the support portion passes.