JPS61128018A - Energy saving type gas appliance - Google Patents

Abstract

PURPOSE:To improve a heating efficiency of a domestic-use gas appliance by a method wherein a rotary knob and an air volume controlling damper are operated in conjunction to each other and an air volume variable burner capable of varying a primary air volume as a volume of fuel gas is varied is provided. CONSTITUTION:Either a fuel gas adjusting plug or lever 3 of a gas appliance and a primary air damper 2 are connected by a link mechanism 4 and a ratio of primary air is varied in respect to the volume of gas. This air volume control unit is assembled in the gas appliance, thereby a burner 1 having an increased ratio of primary air is provided and then a thermal efficiency can be improved. A secondary air damper is arranged so as to enable an entire air volume to be controlled and the combustion can be performed with a low rate of excessive air volume for each of the loads. Adding of the secondary air control enables a more energy saving.

Description

Detailed Description of the Invention] Claim 2 states that: (1) the mixing burner has a feature that the combustion speed can be changed arbitrarily (the upper limit is determined by the type of gas) by changing the primary air ratio; Taking advantage of this feature, when the burner is performing high combustion, the primary air ratio can be increased to accelerate the combustion rate, which in turn increases the ejected gas velocity and improves the heat transfer coefficient.

In addition, in order to achieve stable simmering combustion at low combustion times,
Lowering the primary air ratio lowers the combustion rate and prevents flashback.

In the third term, in addition to the primary air ratio control to improve the combustion speed in the second term, a secondary air damper is provided to control the total air amount, so that combustion can be performed at a low excess air rate at each load. It is a burner made of

When the air amount control of the present invention is performed, the thermal efficiency can be improved by several tens of percent by improving the heat transfer rate by increasing the fuel injection speed and by improving the flame temperature by operating at a low excess air rate.

[Brief explanation of drawings]

Figure 1 is a structural diagram showing an application example of link type primary air flow control. 1...Burner body 2...Primary air damper 3...Fuel gas adjustment knob 4...Each link

Claims (1)

[Claims] 1. An air system that connects a fuel gas amount adjustment device (knob, lever, etc.) and a damper using a link type, mechanical type, or electric control type, and allows the amount of air and gas to be changed arbitrarily. 2. A burner according to claim 1, in which the variable amount burner 2, the fuel gas amount adjuster and the primary air damper are connected to make the gas amount and the primary air amount variable. 3. The burner according to claim 1, in which the fuel gas amount adjustment valve is connected to a primary air damper and a secondary air damper, so that the gas amount, primary air amount, and secondary air amount are variable.