TW201700928A - Burning device with controllable output heat source temperature promoting the burning efficiency and directly controlling the temperature of the heat source - Google Patents

Abstract

Disclosed is a burning device with a controllable output heat source temperature, comprising: an igniter made of a material having a high energy density and resisting to high temperature and located in a first burning chamber, a heating unit located outside of the first burning chamber for heating the igniter to make a surface temperature of the igniter higher than an ignition point of atomized fuel , wherein the first burning chamber is further provided, on an outer periphery thereof, with a mixer to provide a second burning chamber at a periphery of a flame exit of the first burning chamber for supplementing air. As such, the atomized fuel contacts the surface of the igniter in the first burning chamber and gets instantly burned, and then enters the second burning chamber to make fuel vaporization more complete to maximize the burning efficiency. The outputted heat source temperature is regulated with the air supplement operation of the mixer.

Description

Output heat source temperature controllable combustion device

The invention relates to a combustion device, in particular to a combustion device for igniting an atomized fuel by using a high energy density igniter, and a mixer having at least a second combustion chamber can be provided, which can make combustion efficiency when supplementing gas Maximize and simultaneously control the temperature of the output heat source.

Combustion devices are commonly used in kitchen stoves or boiler heating equipment in factories. The current practice of improving combustion efficiency can be roughly divided into two types. One is to control the mixing ratio and uniformity of liquefied fuel and air, so that liquefied fuel can Fully burning, another method is to preheat the liquefied fuel to make the liquefied fuel easier to burn. However, either method will make the structure of the combustion device itself more complicated, and it is used to generate sparks for ignition. In addition to increasing the cost of the device, the combustion range is small, and the effect of improving the combustion efficiency is rather limited, resulting in fuel. waste.

In addition, the temperature of the heat source after combustion of the existing combustion device cannot be controlled, which makes the quality control of the process difficult, and the quality of the manufactured product cannot be ensured.

Therefore, the main object of the present invention is to provide a combustion device with controllable heat source temperature control, which can use an igniter to burn atomized fuel and use it with a mixer to enhance Combustion efficiency and direct control of the heat source output temperature.

In order to achieve the above object, the present invention provides a control device for controlling the temperature of an output heat source, comprising an igniter disposed inside a first combustion chamber, the igniter being made of a material resistant to high temperature and high energy density; a unit disposed in the first combustion chamber for preheating the igniter such that a surface temperature of the igniter is higher than a igniting point of the atomized fuel; and a mixer disposed at a periphery of the first combustion chamber, the mixer having a casing The housing has a second combustion chamber communicating with the interior of the housing and the outside, wherein the second combustion chamber can accommodate the first combustion chamber.

Thereby, since the igniter has been preheated, has a high energy density, and directly ignites by using the surface area of the igniter, it has a larger combustion range than the conventional spark ignition, and the atomized fuel will contact the surface of the igniter. After the fire is burned, the heating unit can stop heating the igniter after combustion, which not only has the energy saving and environmental protection effect of maximizing the combustion efficiency, but also has a relatively simple structure and can reduce the equipment cost. In addition, the mixer can liquefy the combustion of the fuel to make the fuel vaporization more complete, and directly control the heat source output temperature while supplementing the gas.

10‧‧‧ burning device

20‧‧‧ combustion chamber

22‧‧‧through hole

30‧‧‧fuel supply

31‧‧‧ fuel nozzle

32‧‧‧ fuel passage

33‧‧‧ gas passage

40‧‧‧Igniter

50‧‧‧heating unit

60‧‧‧ Mixer

61‧‧‧Shell

62‧‧‧second combustion chamber

63‧‧‧through hole

64‧‧‧ gas guiding components

Figure 1 is a schematic view of a combustion apparatus according to a first embodiment of the present invention.

Fig. 2 is a schematic view showing a combustion apparatus of a second embodiment of the present invention.

Figure 3 is a schematic view of a combustion apparatus according to a third embodiment of the present invention.

Figure 4 is a schematic view showing a combustion apparatus (including a mixer) of a fourth embodiment of the present invention

In order to better understand the features of the present invention, a preferred embodiment of the present invention provides a combustion apparatus 10 having an output temperature controllable temperature. Referring to FIG. 1, an igniter 40 is disposed in a first combustion chamber 20. Internally, and a heating unit 50 is provided in the first combustion chamber 20.

The first combustion chamber 20 is formed in a tubular shape, and has an opening at each end thereof. A fuel supply 30 is disposed at one end of the first combustion chamber 20, and the first combustion chamber 20 is disposed at a side opposite to the fuel supply 30. Through holes 22. Further, the fuel supply 30 has a fuel nozzle 31, a fuel passage 32 connected to the fuel nozzle 31, and a gas passage 33 communicating with the middle portion of the fuel passage 32. Thereby, the liquefied fuel flows through the fuel passage 32 and the gas supplied from the gas passage 33 is mixed, and finally the atomized fuel is formed by the fuel nozzle 31, and is injected into the combustion chamber 20.

The igniter 40 is made of a high energy density material such as ceramic or metal and is disposed inside the first combustion chamber 20. The heating unit 50 is also disposed in the first combustion chamber 20. In the present embodiment, a gas heater has a heat passage therein for preheating the igniter 40 so that the surface temperature of the igniter 40 is higher than that of the atomized fuel. Burning point. Since the gas heater is a conventional heating device, it will not be described here.

Therefore, the liquefied fuel is injected into the combustion passage 20 by the fuel nozzle 31 in the form of atomized fuel after being mixed with the gas in advance, and then the atomized fuel contacts the surface of the igniter 40 in the first combustion chamber 20 to be instantly combusted and burned. The generated flame is injected toward the end of the combustion chamber 20 away from the fuel supply 30. At this time, in addition to the opening of the combustion passage 20 itself, a plurality of through holes 22 are also supplemented with secondary air in a timely manner to help the atomized fuel to be fully combusted, to provide combustion efficiency, and to avoid incomplete exhaust gas pollution. At this time, the heating unit 50 stops the heating operation.

It is worth mentioning that the fuel supply 30 may not be provided with the gas passage 33, that is, the liquefied fuel is simply atomized by the fuel nozzle 31 without being mixed with the air in advance, and may still be directly from the first combustion chamber 20. The opening performs the qi-enhancement operation during combustion.

Referring to FIG. 2 again, the combustion apparatus 10 of the second embodiment provided by the present invention has a main structure substantially the same as that of the first embodiment described above, and the main difference is that the igniter 40 is electrically conductive. The metal material is made, and the heating unit 50 is an induction heater, and the igniter 40 can also be preheated to achieve the object of the present invention.

The present invention further provides a third embodiment, wherein the heating unit 50 has an electrically conductive metal 51 embedded in the igniter 40 made of a ceramic material in addition to the induction heater, so that the induction heater can heat the The surface temperature of the igniter 40 is increased after the conductive heat conductive metal 51.

It is to be noted that the heating unit 50 used in the present invention is not limited to the foregoing embodiment, and those skilled in the art may use a heating wire or other conventional heating device, for example, directly embedded in a ceramic material by using a heating wire. The igniter, which can also be energized to heat the igniter, should be considered to be substantially the same design as the present invention.

Referring to FIG. 4 again, the combustion apparatus 1 uses the first combustion chamber 20, the fuel supply 30 and the igniter 40 of the first embodiment described above, and the heating unit 50 can adopt the foregoing embodiment and its equivalent design as needed. Further, a mixer 60 is disposed on the periphery of the flame outlet side of the first combustion chamber 20. The mixer 60 has a casing 61. A second combustion chamber 62 having a diameter larger than the first combustion chamber 20 is connected to the inner space of the casing and the outside. Further, the first combustion chamber 20 (along with the igniter 40) is also provided with its side remote from the fuel supply 30 extending into the interior of the second combustion chamber 62, and the side of the second combustion chamber 62 remote from the fuel supply 30 is also provided A plurality of through holes 63; in the present embodiment, the first combustion chamber 20 and the second combustion chamber 62 are coaxially disposed, and the housing 61 is provided with two rotatable gas guiding members 64.

When the combustion apparatus 10 of the fourth embodiment is actually used, the fuel supplied from the fuel supply unit 30 is injected into the combustion chamber 20, and is ignited and burned at the moment of contacting the igniter 40, and the flame generated by the combustion and the unvaporized complete fuel It will advance toward the second combustion chamber 62. At this time, the outer space The gas enters the second combustion chamber 62 through the space between the second combustion chamber 62 and the combustion chamber 20, helping the fully vaporized fuel to be completely vaporized, further improving combustion efficiency to achieve complete combustion.

It should be noted that, in the present invention, while the combustion of the first combustion chamber 20 is supplemented by the mixer 60, the internal pressure of the mixer 60 can also be adjusted through the air guiding member 64 (for example, adjusting the intake air of the air guiding element). Angle, adjust the amount of intake air or pressure) to adjust the flow rate of the make-up gas, and directly adjust the temperature of the hot gas (ie, the heat source output temperature). Since the supplied gas passes through the space between the second combustion chamber 62 and the first combustion chamber 20, the internal temperature of the first combustion chamber 20 is not lowered, contributing to an improvement in the overall combustion efficiency.

Finally, it should be noted that the constituent elements disclosed in the foregoing embodiments are merely illustrative and are not intended to limit the scope of the present invention. For example, the mixer of the fourth embodiment can also be used in combination with the combustion chamber, the fuel supply and the igniter of other embodiments, and the number of the second combustion chamber inside the mixer is not limited to one, and the number of air ports can also be used. Reduce to a structure that is either fixed or fixed. Any other structural changes that are easy to think about, or alternative changes with other equivalent components, should also be covered by the scope of the patent application in this case.

10‧‧‧ burning device

20‧‧‧First combustion chamber

22‧‧‧through hole

30‧‧‧fuel supply

31‧‧‧ fuel nozzle

32‧‧‧ fuel passage

33‧‧‧ gas passage

40‧‧‧Igniter

60‧‧‧ Mixer

61‧‧‧Shell

62‧‧‧second combustion chamber

63‧‧‧through hole

64‧‧‧ gas guiding components

Claims (10)

A point combustion device with controllable heat source temperature control, comprising: a first combustion chamber; an igniter disposed inside the first combustion chamber, the igniter being made of a material resistant to high temperature and having high energy density; a heating unit disposed in the combustion chamber for preheating the igniter such that a surface temperature of the igniter is higher than a igniting point of the atomized fuel; and a mixer disposed at a periphery of the first combustion chamber, the mixing The device has a casing, and a second combustion chamber is disposed on the casing to communicate the inside of the casing with the outside, and the second combustion chamber can accommodate the first combustion chamber. The point combustion apparatus of claim 1, wherein the first combustion chamber is tubular and has two openings at both ends, and a fuel supply is disposed at one end of the first combustion chamber and has a A fuel nozzle to provide the atomized fuel. The output heat source temperature controllable combustion apparatus of claim 2, wherein the first combustion chamber is provided with a plurality of through holes away from a side of the fuel supply. The output heat source temperature controllable combustion apparatus of claim 2, wherein the fuel supply further has a fuel passage connected to the fuel nozzle, and a middle of the fuel passage is connected to a gas passage. The point burner of the output heat source temperature controllable according to claim 1, wherein the igniter is made of a ceramic material or a metal material, and the heating unit is a gas heater. The heat source temperature controllable combustion apparatus according to claim 1, wherein the igniter is made of a conductive metal material, and the heating unit is an induction heater. The heat source temperature controllable combustion apparatus according to claim 1, wherein the igniter is made of a ceramic material, the heating unit has an electrically and thermally conductive metal embedded in the igniter, and an induction heater is used for the electrically conductive The heat conductive metal is heated. The heat source temperature controllable combustion apparatus according to claim 1, wherein the igniter is made of a ceramic material, and the heating unit is a heating wire and embedded in the igniter. The output heat source temperature controllable combustion apparatus according to any one of claims 1 to 8, wherein the second combustion chamber is provided with a plurality of through holes, and the housing is further provided with at least one gas guiding element. The output heat source temperature controllable combustion apparatus of claim 9, wherein the gas guiding element is movably disposed in the housing.