JPS6314197Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a gas appliance in which a thermocouple is installed on the outside of a burner equipped with surrounding flame holes to detect the flame and take safety measures in the event of a burner misfire. .

When this type of thermocouple is exposed to the inner flame of a combustion flame, it is likely to suffer corrosion due to a reduction reaction, and since the temperature of the inner flame is low, it takes time to preheat at the time of ignition.

In order to eliminate this inconvenience, a constriction part e is formed in the communication part between the burner port b facing the thermocouple a and the gas chamber d of the burner c to reduce the gas amount and flow rate of the gas ejected from the burner port b. It is known that the thermocouple is prevented from coming into contact with the inner flame by forming a small flame that spreads laterally. However, since the burner cap f equipped with the flame port b is rotatable with respect to the burner body g, the flame port b and the thermocouple a may not necessarily face each other correctly, and this may cause the flame to hit the thermocouple a. There are inconveniences such as the generated voltage changing due to different conditions, or contact with the inner flame of the adjacent flame, and this is not necessarily a sufficient countermeasure. The present invention was developed in view of the current situation, and a large number of flame ports 3 are arranged on the circumferential surface 2 of the burner 1.
In a type in which a thermocouple 4 is provided on the outside facing the circumferential surface, the thermocouple 4 faces the side surface of the burner 1 from the lower side of the burner 1, and the heat-sensitive portion 5 of the thermocouple 4 is bent along the arrangement direction of the burner ports 3 at the position where the lower end of the flame of the burner port 3 contacts, and the burner 1 has an annular burner body 1b with a groove forming a gas chamber 1a. It consists of a burner cap 1c which is removably placed on the upper surface of the burner cap.

In the illustrated example, a built-up part 6 is provided on the side surface of the burner body 1b, the base part 7 of the thermocouple 4 is vertically supported by this part, and the heat-sensitive part at the upper end is bent at a substantially right angle to arrange the burner ports 3. along the direction.

According to the present invention, since the thermocouple 4 faces the side surface of the burner 1 from the lower side of the burner 1, the thermocouple does not particularly interfere with combustion, and the heat-sensitive portion of the thermocouple 4 is bent along the arrangement direction of the flame ports 3 at the position where the lower end of the flame from the flame port 3 contacts, so that the heat-sensitive portion 5 does not come into contact with the inner flame of the flame from the flame port 3. Therefore, there is no corrosion due to this, and the heat sensitive part 5 has multiple flame ports 3.
Since it comes into contact with the flame from above, the temperature of the part can be raised as quickly as possible, and there is no need to consider the lateral positional relationship between the flame port 3 and the thermocouple 4 during assembly as described above. Therefore, there are effects such as ease of assembly.

[Brief explanation of the drawing]

In the drawings, Fig. 1 is a cutaway side view showing a conventional example, and Fig. 2 is a cutaway side view showing a conventional example.
The figure is a cross-sectional view of the same, Figure 3 is a side view of one example of implementing the present invention, Figure 4 is a perspective view of a part of it, and Figure 5
The figure is an explanatory diagram showing the relationship between a flame and a thermocouple. 1...burner, 2...periphery, 3...flame mouth, 4...
...Thermocouple, 5...Heat-sensitive part.

Claims (1)

[Scope of utility model registration request] A large number of flame ports 3 are arranged on the peripheral surface 2 of the burner 1,
In a type in which a thermocouple 4 is provided on the outside facing the circumferential surface, the thermocouple 4 faces the side surface of the burner 1 from the side lower part of the burner 1, and the heat sensitive part 5 of the thermocouple 4 is bent along the arrangement direction of the flame ports 3 at a position where the lower end of the flame of the flame ports 3 contacts.