A siphon type self-pressurized flame spraying furnace core and use method

Abstract

The invention discloses a siphon type self-pressurized flame spraying furnace core and a method of using the same, including a mixing chamber and a boosting chamber, a constant pressure boosting chamber, the constant pressure boosting chamber is opened in the boosting chamber; a constant pressure boosting chamber gas inlet, the constant pressure boosting chamber gas inlet is opened in the boosting chamber and is connected to the constant pressure boosting chamber through a pipeline; a gas nozzle, the gas nozzle is connected to the top of the boosting chamber, and there are a number of gas nozzles; a nozzle gas channel, the nozzle gas channel is opened in the gas nozzle, and is connected to the outside and the constant pressure boosting chamber; a gas mixing chamber is opened in the mixing chamber and passes through the mixing chamber, the number of gas mixing chambers corresponds to the number of gas nozzles, and the gas nozzle extends into the gas mixing chamber, and the upper end of the gas mixing chamber is a flame spraying port. When the gas passes through the nozzle gas channel in the gas nozzle, a high-speed gas jet is formed, and the high-speed gas jet drives the air at the siphon type oxygen increase port to enter the gas mixing chamber, so as to increase the oxygen supply in the gas mixing chamber, thereby generating a greater calorific value.

Description

Technical Field

[0001] The invention belongs to the field of gas stoves, and in particular relates to a siphon type self-pressurized flame spraying stove core and a use method thereof. Background Art

[0002] At present, the known household stove core or portable outdoor stove core is composed of connecting pipe, combustible gas mixing mechanism, mixed gas burner, stove nozzle, stove fire cover, flameout protection and other mechanisms, and the structure is very complicated. However, in the actual use process, since the household stove core or portable outdoor stove core adopts zero pressure mixed combustion, the calorific value of the flame during combustion is relatively small, and the wind resistance during combustion is also relatively poor. If there is wind when using indoors or outdoors, the combustion calorific value of the flame will not only be reduced, but also because it is zero pressure mixed combustion, the flame is easily blown out by the wind. Especially when used in high altitude areas, due to the high altitude and low oxygen content in the air, the stove of zero pressure mixed combustion has too low oxygen content in the air, so the calorific value generated by combustion will also be smaller, resulting in excessive waste of combustion gas source. Summary of the invention

[0003] The purpose of the present invention is to provide a siphon type self-pressurized flame spraying furnace core which can provide more oxygen to the furnace core by siphoning and a use method thereof.

[0004] The object of the present invention is achieved by the following technical means: a siphon type self-pressurized flame spraying furnace core, comprising a mixing chamber and a pressurizing chamber,

[0005] A constant pressure boost chamber, which is opened in the boost chamber;

[0006] The gas inlet of the constant pressure boosting chamber is opened in the boosting chamber and is connected with the constant pressure boosting chamber through a pipeline;

[0007] A gas nozzle, which is connected to the top of the boost chamber, and there are several gas nozzles in total;

[0008] Nozzle gas channel, the nozzle gas channel is opened in the gas nozzle, connecting the outside and the constant pressure boosting chamber;

[0009] A gas mixing chamber is opened in the mixing chamber and penetrates the mixing chamber. The number of the gas mixing chambers corresponds to the number of the gas nozzles, and the gas nozzles extend into the gas mixing chamber. The upper end of the gas mixing chamber is a flame nozzle;

[0010] A connecting column, the connecting column is connected to the lower surface of the mixing chamber, and the other end of the connecting column is connected to the upper surface of the boosting chamber;

[0011] The siphon type oxygenation port is the gap between the mixing chamber and the pressurization chamber.

[0012] Furthermore, there are four gas nozzles and four gas mixing chambers.

[0013] Furthermore, the gas mixing chamber has a diameter of 20 mm and a length of 40 mm.

[0014] Furthermore, the diameter of the nozzle gas channel is equal to or less than 0.8 mm.

[0015] Furthermore, a plurality of mounting screw holes are provided on the surface of the mixing chamber.

[0016] Furthermore, the connecting column is 5 mm high and 10 mm in diameter.

[0017] Furthermore, the gas nozzle extends into the gas mixing chamber by 3 mm.

[0018] Furthermore, the diameter of the gas inlet of the constant pressure boosting chamber is 6 mm.

[0019] The invention discloses a method for using a siphon type self-pressurized flame-spraying furnace core. The method comprises the following steps: connecting the outlet end of a gas pipeline with a control valve to the gas inlet of a constant pressure boosting chamber, fixing the siphon type self-pressurized flame-spraying furnace core to the furnace core position of the original furnace by installing screw holes 3, and transmitting gas to the constant pressure boosting chamber through the gas inlet of the constant pressure boosting chamber at the outlet end of the gas pipeline. When the gas passes through the nozzle gas channel in the gas nozzle, a high-speed gas jet is formed. The high-speed gas jet drives the air at the siphon type oxygenation port to enter the gas mixing chamber, so that the gas is fully mixed with the sucked air in the gas mixing chamber. After being ejected from the gas mixing chamber, the mixed gas burns outside the flame-spraying port. After the mixed gas burns for a period of time, the temperature of the constant pressure boosting chamber rises, and the gas in the constant pressure boosting chamber is subjected to secondary thermal supercharging to further increase the gas pressure. However, the air at the siphon type oxygenation port driven by the high-speed gas jet cools down the nearby furnace body. While oxygenating the gas in the gas mixing chamber, the constant pressure boosting chamber, the gas nozzle, and the main body of the gas mixing chamber are continuously cooled down.

[0020] The beneficial effects of the present invention are: 1. When the gas passes through the nozzle gas channel in the gas nozzle, a high-speed gas jet is formed. The high-speed gas jet drives the air at the siphon-type oxygen increase port into the gas mixing chamber to increase the oxygen supply in the gas mixing chamber, thereby generating a greater calorific value.

[0021] 2. The temperature of the constant pressure boosting chamber rises, and the gas in the constant pressure boosting chamber is subjected to secondary thermal boosting to further increase the gas pressure.

[0022] 3. The air at the siphon-type oxygen-increasing port driven by the high-speed gas jet cools down the nearby furnace body. While adding oxygen to the gas in the gas mixing chamber, it continuously cools down the constant-pressure boosting chamber, the gas nozzle, and the main body of the gas mixing chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A top view of the mixing chamber;

[0024] Figure 2 This is a cross-sectional view of a siphon-type self-pressurized flame-spraying furnace core;

[0025] Figure 3 This is a schematic diagram of the installation screw hole structure;

[0026] In the figure, 1 is the mixing chamber; 2 is the boosting chamber; 2-E is the gas mixing chamber; 2-F is the gas nozzle; 2-G is the siphon type oxygen increase port; 2-H is the nozzle gas channel; 2-I is the constant pressure boosting chamber; 2-J is the constant pressure boosting chamber gas inlet; 3 is the mounting screw hole; 4 is the connecting column; 5 is the flame nozzle.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0028] [Example 1]

[0029] like Figure 1 and Figure 2 As shown, a siphon type self-pressurized flame-spraying furnace core comprises a mixing chamber 1 and a pressurizing chamber 2.

[0030] The constant pressure boosting chamber 2-I is opened in the boosting chamber 2 and is used to contain the gas.

[0031] The constant pressure boosting chamber gas inlet 2-J is opened in the boosting chamber 2 and is connected with the constant pressure boosting chamber 2-I through a pipeline; the constant pressure boosting chamber gas inlet 2-J is connected to the gas pipeline outlet end of the control valve, and the gas is tightened in the constant pressure boosting chamber 2-I.

[0032] Gas nozzle 2-F, gas nozzle 2-F is connected to the top of boost chamber 2, and there are several gas nozzles 2-F;

[0033] Nozzle gas channel 2-H, the nozzle gas channel 2-H is opened in the gas nozzle 2-G, connecting the outside and the constant pressure boosting chamber 2-I;

[0034] The gas in the constant pressure boosting chamber 2-I is ejected upward through the nozzle gas channel 2-H in the gas nozzle 2-F to form a high-speed gas jet.

[0035] The gas mixing chamber 2-E is opened in the mixing chamber 1 and penetrates the mixing chamber 1. The number of the gas mixing chambers 2-E corresponds to the number of the gas nozzles 2-G, and the gas nozzles 2-G extend into the gas mixing chamber 2-E. The upper end of the gas mixing chamber 2-E is a flame nozzle 5;

[0036] The gas mixing chamber 2-E runs through the entire mixing chamber 1 from top to bottom, and the gas mixing chamber 2-E corresponds to the gas nozzle 2-F one by one. There is a gas mixing chamber 2-E above each gas nozzle 2-F, and the gas sprayed by the gas nozzle 2-F enters the gas mixing chamber 2-E. The opening at the upper end of the gas mixing chamber 2-E is a flame spray port 5.

[0037] The connecting column 4 is connected to the lower surface of the mixing chamber 1, and the other end of the connecting column is connected to the upper surface of the boosting chamber 2; the connecting column 4 is used to connect the mixing chamber 1 and the boosting chamber 2, and leaves a gap between the mixing chamber 1 and the boosting chamber 2, and the outflow gap is the siphon type oxygenation port 2-G.

[0038] The siphon type oxygenation port 2 -G is the gap between the mixing chamber 1 and the boosting chamber 2 .

[0039] As the high-speed gas jet is ejected upward, the air near the siphon-type oxygenation port 2-G enters the gas mixing chamber 2-E under the siphon effect.

[0040] The gas and air are fully mixed in the gas mixing chamber 2 -E and finally burn outside the flame outlet 5 .

[0041] [Example 2]

[0042] like Figure 1 and Figure 2 As shown, based on Example 1, the number of the gas nozzles 2-F and the number of the gas mixing chambers 2-E are both four. If the number of the burner ports 5 is too small, the combustion efficiency will be reduced, and the combustion time will also be increased. If the number of the burner ports 5 is too large, the combustion efficiency will be enhanced, but the energy consumption will be increased, causing the gas to be consumed too quickly.

[0043] When tested at an altitude of 4,500 meters, the energy consumption performance is best when four flame nozzles 5 are designed. However, it is not limited to the gas nozzles 2-F and the gas mixing chambers 2-E having four. The number and size of the gas nozzles 2-F and the gas mixing chambers 2-E can be changed according to actual conditions.

[0044] The gas mixing chamber 2-E has a diameter of 20 mm and a length of 40 mm.

[0045] In order to increase the windproof performance, such an installation structure and installation dimensions can ensure that the gas is injected into the gas mixing chamber 2-E at a high speed through the nozzle gas channel 2-H on the gas nozzle 2-F, and the conical mixed gas formed by mixing with the air sucked in through the siphon type oxygen increase port 2-G is always ejected from the upper opening of the gas mixing chamber 2-E in a conical shape, and will not form turbulence with the air sucked in by the siphon type oxygen increase port 2-G in the gas mixing chamber 2-E, causing unstable combustion. Although the mixed gas formed by the gas and the air is always ejected from the upper opening of the gas mixing chamber 2-E in a conical shape and always burns outside the flame vent 5, after testing, the siphon type self-pressurized flame venting furnace core can withstand a maximum of 8.0-10.7m / s of level 5 strong wind.

[0046] The diameter of the nozzle gas channel 2-H is equal to or less than 0.8 mm.

[0047] The diameter of the constant pressure booster bin gas inlet 2-J is 6 mm.

[0048] In terms of safety in use, all known stoves must be equipped with a separate flameout protection device to prevent backfire caused by pressure imbalance or flameout or backfire caused by poor windproof performance of the stove itself. However, the safety of use has been taken into consideration in the design of the stove core at the beginning of its design. The design of the constant pressure boosting chamber 2-I is also to prevent the occurrence of unsafe factors such as backfire in the stove core. First of all, the diameter of the constant pressure boosting chamber gas inlet 2-J on the constant pressure boosting chamber 2-I is 6mm. No matter how much the pressure of the gas entering the constant pressure boosting chamber 2-I through the constant pressure boosting chamber gas inlet 2-J is, the constant pressure boosting chamber 2-I will play a role in safety protection. For example, when butane gas with the lowest filling pressure is used as the fuel gas supply, the filling pressure of the butane gas cylinder is 0.5MPa under normal circumstances. After the butane gas enters the constant pressure boosting chamber 2-I, the temperature of the constant pressure boosting chamber 2-I is about 180°C, which causes the butane gas to produce a thermal expansion effect in the constant pressure boosting chamber 2-I, causing the pressure of the butane gas to further increase. Through testing, the pressure increase value is basically between 0.06MPa∕s and 0.08MPa∕s. Regardless of the pressure of the butane gas entering the constant pressure boosting chamber 2-I or the pressure increased by the butane gas after entering the constant pressure boosting chamber 2-I due to the thermal expansion effect, it will be completely released through the gas nozzle 2-F. After the gas is ejected from the nozzle gas channel 2-H through the gas nozzle 2-F, no matter whether the pressure is stable or not, there will be no flashback phenomenon, and no explosion will occur due to flashback. When the gas in the butane gas cylinder is about to be exhausted, if the pressure of the constant pressure booster chamber 2-I is consistent with the atmospheric pressure, after testing, the flame will automatically extinguish when it returns to the gas nozzle 2-F, because when the flame returns to the gas nozzle 2-F, the diameter of the nozzle gas channel 2-H is 0.8mm or less than 0.8mm, and the flame returning to the gas nozzle 2-F will automatically extinguish due to insufficient oxygen supply, and naturally there will be no flashback phenomenon, let alone explosion due to flashback. Therefore, there is no need to install a separate flameout protection device when using it.

[0049] like Figure 3 As shown, a plurality of mounting screw holes 3 are also provided on the surface of the mixing chamber 1 .

[0050] Used to fix the siphon type self-pressurized flame-spraying furnace core in the furnace core of the original furnace.

[0051] The connecting column 4 is 5 mm high and 10 mm in diameter.

[0052] In order to keep the temperature of the constant pressure boosting chamber 2-I basically constant at about 180℃, after calculation and testing, the height of the siphon type oxygen inlet 2-G between the constant pressure boosting chamber 2-I and the E gas mixing chamber 2-, that is, the height of the connecting column 4 is determined to be 5mm. Such a height of the mixed gas inlet ensures that the large flow of mixed gas will not blow out the flame due to too fast flow rate when entering the gas mixing chamber 2-E, and will not fail to cool down the constant pressure boosting chamber 2-I, the gas nozzle 2-F, and the body of the gas mixing chamber 2-E due to too slow flow rate. In addition, the height of the siphon type oxygen inlet 2-G between the constant pressure boosting chamber 2-I and the gas mixing chamber 2-E is determined to be 5mm, which can ensure that no matter whether a large fire or a small fire is used, the mixed combustion ratio of the combustible gas and air can always be maintained between 3:1 and 2.5:1, which is also the best energy consumption ratio. Under the condition of generating the same heat energy, the consumption of combustible gas is also the smallest, ensuring the best energy consumption performance.

[0053] In order to achieve secondary thermal pressurization of the combustible gas, the constant pressure boosting chamber 2-I is kept at a constant temperature of about 180°C. The pressurized combustible gas is thermally pressurized, which allows the combustible gas to undergo thermal expansion in the constant pressure boosting chamber 2-I when passing through the constant pressure boosting chamber 2-I, thereby further increasing the ejection pressure of the combustible gas. In order to keep the temperature of the constant pressure boosting chamber 2-I at a constant temperature of about 180°C,

[0054] At the same time, the connecting column 4 is 5mm high and 10mm in diameter. After testing, such processing dimensions can not only ensure that after the furnace core is ignited and used for about 1 minute, the temperature of the gas mixing chamber 2-E transmitted to the constant pressure boost chamber 2-I body through the connecting column 4 in the middle of the furnace core will not be too high, but the temperature conduction time will not be too long. Moreover, the temperature will continue to rise to about 180°C, and it can also ensure that the high-speed jet formed by the gas when passing through the nozzle gas channel 2-H drives the air around the siphon type oxygen increase port 2-G to cool the furnace body around the siphon type oxygen increase port 2-G while entering the gas mixing chamber 2-E, so as to make the temperature of the main body of the furnace core constant pressure boost chamber 2-I basically constant at about 180°C.

[0055] The gas nozzle 2-F extends into the gas mixing chamber 2-E by 3 mm.

[0056] In order to ensure that the gas is injected into the gas mixing chamber 2-E at high speed through the nozzle gas channel 2-H on the gas nozzle 2-F, mixed with the air sucked in through the siphon type oxygen increase port 2-G and formed into a cone shape, ejected from the upper port of the gas mixing chamber 2-E, and burned outside the flame outlet 5. After calculation and testing, the installation size of the new gas nozzle 2-F is that after installation, the top will leave 3mm at the bottom of the gas mixing chamber 2-E, through Figure 2It can be seen from the cross section that such a design structure and size is to ensure that the top part of the gas nozzle 2-F is hidden in the bottom end of the gas mixing chamber 2-E, and to ensure that the gas is injected into the gas mixing chamber 2-E at a high speed through the nozzle gas channel 2-H on the gas nozzle 2-F and mixed with the air sucked in through the siphon type oxygen increase port 2-G to form a conical mixed gas that is always ejected from the upper port of the gas mixing chamber 2-E in a conical shape and burns outside the flame nozzle 5. The air sucked in through the siphon type oxygen increase port 2-G will not form turbulence in the gas mixing chamber 2-E, thereby affecting the gas form injected into the gas mixing chamber 2-E by the gas nozzle 2-F. The diameter of the gas mixing chamber 2-E is determined to be 20 mm and the length is determined to be 40 mm, so as to ensure that the conical mixed gas formed by the gas being sprayed into the gas mixing chamber 2-E at high speed through the nozzle gas channel 2-H on the gas nozzle 2-F and mixed with the air sucked in through the siphon type oxygen increase port 2-G is always sprayed out from the upper port of the gas mixing chamber 2-E in a conical shape and burns outside the flame nozzle 5.

[0057] All materials in the siphon type self-pressurized flame-spraying furnace core are made of metal materials such as stainless steel, copper or carbon steel, which can withstand a flame temperature of up to 2000°C. After calculation and testing, after the gas is sprayed into the gas mixing chamber 2-E at a high speed through the nozzle gas channel 2-H on the gas nozzle 2-F, it is mixed with the air sucked in through the siphon type oxygen increase port 2-G to form a cone shape and spray out from the upper mouth of the gas mixing chamber 2-E, and burn outside the 1 flame-spraying port 5. Regardless of the size of the flame, the burning flame will not enter the gas mixing chamber 2-E, so the burning flame will not directly burn the siphon type self-pressurized flame-spraying furnace core. When the air around the siphon type oxygen increase port 2-G enters the gas mixing chamber 2-E and cools the furnace body around the siphon type oxygen increase port 2-G, the siphon type self-pressurized flame-spraying furnace core can withstand the high temperature of the sprayed flame of up to 2000°C, whether it is made of stainless steel, copper, carbon steel or other metal materials.

[0058] [Example 3]

[0059] like Figure 1 to Figure 2As shown, on the basis of Example 2, a method for using a siphon type self-pressurized flame-spraying furnace core is provided. The outlet end of the gas pipeline with a control valve is connected to the gas inlet 2-J of the constant pressure boosting chamber, and the siphon type self-pressurized flame-spraying furnace core is fixed to the furnace core position of the original furnace by installing screw holes 3. The outlet end of the gas pipeline transports gas to the constant pressure boosting chamber 2-I through the gas inlet 2-J of the constant pressure boosting chamber. When the gas passes through the nozzle gas channel 2-H in the gas nozzle 2-F, a high-speed gas jet is formed. The high-speed gas jet drives the air at the siphon type oxygen increase port 2-G to enter the gas mixing chamber 2-E, so that The gas is fully mixed with the sucked air in the gas mixing chamber 2-E, and the mixed gas burns outside the flame vent 5 after being ejected from the gas mixing chamber 2-E. After the mixed gas burns for a period of time, the temperature of the constant pressure boost chamber 2-I rises, and the gas in the constant pressure boost chamber 2-I is subjected to secondary thermal boosting, further increasing the gas pressure. However, the air at the siphon-type oxygenation port 2-G driven by the high-speed gas jet cools the nearby furnace body. While oxygenating the gas in the gas mixing chamber 2-E, the constant pressure boost chamber 2-I, the gas nozzle 2-F, and the main body of the gas mixing chamber 2-E are continuously cooled. This makes the temperature of some parts of the constant pressure boost chamber 2-I around 1800°C.

[0060] If the siphon type self-pressurized flame-spraying stove core is used to manufacture commercial stoves or outdoor portable stoves, it is only necessary to install the siphon type self-pressurized flame-spraying stove core on the stove core bracket of the commercial stove or the bracket of the outdoor stove through the mounting screw holes 3 on the stove core and connect the gas pipeline with a control valve for normal use.

Claims

1. A siphon type self-pressurized flame spraying furnace core, characterized in that: It comprises a mixing chamber (1) and a pressurizing chamber (2), A constant pressure boosting chamber (2-I), the constant pressure boosting chamber (2-I) is opened in the boosting chamber (2); A constant pressure boosting chamber gas inlet (2-J), the constant pressure boosting chamber gas inlet (2-J) is opened in the boosting chamber (2) and is connected to the constant pressure boosting chamber (2-I) through a pipeline; A gas nozzle (2-F), the gas nozzle (2-F) is connected to the top of the boost chamber (2), and there are a plurality of gas nozzles (2-F); A nozzle gas channel (2-H), the nozzle gas channel (2-H) is opened in the gas nozzle (2-F) and communicates with the outside and the constant pressure boosting chamber (2-I); A gas mixing chamber (2-E), the gas mixing chamber (2-E) is opened in the mixing chamber (1) and penetrates the mixing chamber (1), the number of the gas mixing chambers (2-E) corresponds to the number of the gas nozzles (2-F), and the gas nozzles (2-F) extend into the gas mixing chamber (2-E), and the upper end of the gas mixing chamber (2-E) is a flame nozzle (5); A connecting column (4), the connecting column (4) is connected to the lower surface of the mixing chamber (1), and the other end of the connecting column is connected to the upper surface of the boosting chamber (2); A siphon-type oxygenation port (2-G), wherein the siphon-type oxygenation port (2-G) is a gap between the mixing chamber (1) and the pressure-increasing chamber (2); There are four gas nozzles (2-F) and four gas mixing chambers (2-E); The diameter of the gas mixing chamber (2-E) is 20 mm and the length is 40 mm; the gas nozzle (2-F) extends 3 mm into the gas mixing chamber (2-E); and the height of the siphon type oxygen increase port inlet (2-G) is 5 mm.

2. A siphon type self-pressurized flame spraying furnace core according to claim 1, characterized in that: The diameter of the nozzle gas channel (2-H) is equal to or less than 0.8 mm.

3. The siphon type self-pressurized flame spraying furnace core according to claim 1, characterized in that: The surface of the mixing chamber (1) is also provided with a plurality of mounting screw holes (3).

4. The siphon type self-pressurized flame spraying furnace core according to claim 1, characterized in that: The connecting column (4) is 5 mm high and 10 mm in diameter.

5. The siphon type self-pressurized flame spraying furnace core according to claim 1, characterized in that: The diameter of the constant pressure booster bin gas inlet (2-J) is 6 mm.

6. A method for using a siphon type self-pressurized flame spraying furnace core according to any one of claims 1 to 5, characterized in that: The outlet end of the gas pipeline with a control valve is connected to the gas inlet (2-J) of the constant pressure boosting chamber, and the siphon type self-pressurized flame spraying furnace core is fixed to the furnace core position of the original furnace through the mounting screw hole (3). The outlet end of the gas pipeline transports gas to the constant pressure boosting chamber (2-I) through the gas inlet (2-J) of the constant pressure boosting chamber. When the gas passes through the nozzle gas channel (2-H) in the gas nozzle (2-F), a high-speed gas jet is formed. The high-speed gas jet drives the air at the siphon type oxygen increase port (2-G) to enter the gas mixing chamber (2-E), so that the gas is sucked into the gas mixing chamber (2-E) and the gas mixing chamber (2-E). The mixed gas is fully mixed with the air, and after being ejected from the gas mixing chamber (2-E), it burns outside the flame outlet (5). After the mixed gas burns for a period of time, the temperature of the constant pressure boosting chamber (2-I) rises, and the gas in the constant pressure boosting chamber (2-I) is subjected to secondary thermal boosting, further increasing the gas pressure. However, the air at the siphon type oxygen increase port (2-G) driven by the high-speed gas jet cools down the nearby furnace body. While oxygenating the gas in the gas mixing chamber (2-E), the constant pressure boosting chamber (2-I), the gas nozzle (2-F) and the main body of the gas mixing chamber (2-E) are continuously cooled.

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