Combustion chamber device of gas heater for transport vehicle

Abstract

The utility model provides a gas heater combustion chamber device for a transport vehicle, which comprises a heat exchanger (1), a mounting platform (2) and a combustion cylinder (3), the mounting platform (2) is arranged at the bottom of the heat exchanger (1), the combustion cylinder (3) is sleeved in a hollow cavity of the heat exchanger (1), an ignition device (4) is sleeved in the combustion cylinder (3), and an air deflector (5) is arranged at the front end of the combustion cylinder (3). The air guide plate (5) is composed of an annular frame (51) located on the upper portion and a concave plate (52) located on the lower portion, a first opening (521) is formed in the center of the concave plate (52), a plurality of first air guide holes (522) are formed in the circumferential side of the concave plate (52), and each first air guide hole (522) is connected with a first air guide piece (523). The gas heater has the function of protecting the combustion fan and the controller after forced outage, and can effectively solve the problems of reverse flow of high-temperature hot gas in a combustion chamber and the like after forced outage in the working process of the gas heater.

Description

Technical Field

[0001] The utility model relates to a combustion chamber device of a gas heater for a transport vehicle. Background Art

[0002] With the emergence of clean energy gas-powered transport vehicles, such as trucks and buses, gas heaters are being used to provide warm air to the interiors of these vehicles in cold environments, further enhancing interior comfort. However, if a forced power outage occurs during normal operation of these widely used gas heaters, atmospheric pressure forces the high-temperature hot air within the combustion chamber to flow backwards into the combustion-supporting blower and controller, potentially damaging the unit or even rendering it unusable. Summary of the Invention

[0003] The purpose of the utility model is to provide a gas heater combustion chamber device for a gas transport vehicle that is integrated and efficient and has a forced power-off protection combustion-supporting fan and controller function during operation. The technical solution of the utility model is: a gas heater combustion chamber device for a transport vehicle, comprising: a heat exchanger (1), a mounting platform (2), and a combustion tube (3), wherein the heat exchanger (1) is provided with a mounting platform (2) at the bottom, the combustion tube (3) is mounted in the hollow cavity of the heat exchanger (1), the ignition device (4) is sleeved in the combustion tube (3), and the front end of the combustion tube (3) is provided with an air guide plate (5); the air guide plate (5) is composed of an annular frame (51) at the upper part and a concave plate (52) at the lower part, wherein the center of the concave plate (52) is provided. A first opening (521) is provided at the concave plate (52), a plurality of first air guide holes (522) are provided on the circumferential side of the concave plate (52), and each first air guide hole (522) is connected to a first air guide plate (523); the ignition device (4) is composed of a gas mixing cover (41), a multi-layer combustion net (42), a combustion cover (43) and a plurality of electrodes (44), wherein the multi-layer combustion net (42) is sleeved in the gas mixing cover (41), the upper end of the combustion cover (43) is sleeved in the gas mixing cover (41), and the combustion cover (43) is composed of a flat plate (431) at the upper end and a The annular plate (432) is composed of a circular ring (433) fixed between the flat plate (431) and the annular plate (432), the upper flat plate (431) is provided with a plurality of annular through holes (310), the circular ring (433) is provided with a plurality of evacuation through holes (330), and a plurality of electrodes (44) are fixed on the annular plate (432); the mixing cover (41) is composed of a convex plate (411) located at the upper part and a conical frame (412) located at the lower part, wherein the center of the convex plate (411) is provided with a second opening (111), and the circumferential side of the convex plate (411) is provided with a plurality of evacuation through holes (330). A plurality of second air guide holes (112) are provided, and each second air guide hole (112) is connected to a second air guide plate (113); a conduit connecting plate (6) is fixed below the mounting platform (2), and a conducting hole (7) and an exhaust gas exhaust pipe (8) are provided below the heat exchanger (1); a lead-out section (91) of a gas conduit (9) fixed to the conduit connecting plate (6) is passed through the conducting hole (7), and a gas outlet end (92) of the gas conduit (9) passes through the first opening (521) and the second opening (111) and is fittedly connected to the ignition device (4).

[0004] Each first air guide piece (523) is opened to the concave plate (52) in the range of 0 to 90 degrees and the opening direction is consistent. The first air guide holes (522) are arranged on the concave plate (52) at equal intervals. The first air guide pieces (523) connected to each first air guide hole (522) are located at the same position. The angle between each first air guide piece (523) and the concave plate (52) is the same. Each second air guide piece (113) is opened to the convex plate (411) in the range of 0 to 90 degrees and the opening direction is consistent.

[0005] The second air guide holes (112) are arranged at equal intervals on the convex plate (411); the second air guide pieces (113) connected to each second air guide hole (112) are located at the same position; and the angle between each second air guide piece (113) and the convex plate (411) is the same.

[0006] Three electrodes (44) are fixed on an annular plate (432) at the lower end of a combustion hood (43), wherein an arc release distance H is provided between a first electrode (441) and a second electrode (442), and a third electrode (443) is placed opposite the first electrode (441) and the second electrode (442).

[0007] The working principle of this utility model:

[0008] The combustion chamber device of the gas heater of the present invention is a device that releases a high-voltage arc between a first electrode (441) and a second electrode (442). The gas comes from a branch opened in the gas pipeline of a gas transport vehicle itself, passes through a gas pressure reducing valve and a control valve, and then enters an ignition device (4) through a gas conduit (9) to mix with the combustion-supporting air. It is then ignited by the high-voltage arc released between the first electrode (441) and the second electrode (442). The hot gas from the combustion flows through the hollow cavity of the combustion tube (3) and the heat exchanger (1) respectively, and is finally discharged through the exhaust pipe (8); the third electrode (443) can sense the internal temperature of the combustion tube (3) in real time, reflecting the internal combustion state.

[0009] Technical effects of this utility model:

[0010] The utility model has the following beneficial effects:

[0011] 1. The combustion-supporting air required by the combustion chamber device of the gas heater of the present invention first flows through the plurality of first air guide holes (522) and the first air guide blade (523) on the air guide plate (5), so that the combustion-supporting air is more evenly and effectively transported to the combustion tube (3); the gas outlet end (92) of the gas conduit (9) passes through the first opening (521) and the second opening (111) and is connected to the ignition device (4), and the plurality of second air guide holes (112) and the second air guide blade (113) provided on the gas mixing cover (41) are used. The invention can ensure that the mixed gas of the gas and the wind is evenly and effectively transported to the ignition device (4). The mixed gas is accumulated on the multi-layer combustion net (42) before ignition. The effective number of layers of the combustion net can ensure the continuous supply of fuel. The gas conduit (9) is fixed on the conduit connecting plate (6) and then fixed as a whole on the installation platform (2) provided at the bottom of the heat exchanger (1). This makes the installation and removal of the gas conduit (9) more convenient. By optimizing the fixing method of the gas conduit, the overall structure is more compact and easy to install. When the gas heater is forcibly powered off, the air guide plate (5) at the front end of the combustion tube (3) and the air guide plate thereon and the air mixing cover (41) at the upper end of the combustion cover (43) and the air guide plate thereon can effectively block the reverse flow of the high-temperature hot gas generated in the combustion tube (3).

[0012] 2. The utility model utilizes the first air guide holes (522) to be arranged at equal intervals on the concave plate (52), the first air guide pieces (523) connected to each first air guide hole (522) are located at the same position, and the angle between each first air guide piece (523) and the concave plate (52) is the same. This method can make the combustion-supporting air enter the combustion tube (3) more evenly, and the stable and uniform air volume will not cause ignition due to strong wind, making the combustion more stable and uniform.

[0013] 3. The utility model utilizes the second air guide holes (112) to be arranged at equal intervals on the convex plate (411), the second air guide pieces (113) connected to each second air guide hole (112) are located at the same position, and the angle between each second air guide piece (113) and the convex plate (411) is the same. This method can make the gas after the fuel gas and wind are mixed more evenly and effectively transported to the ignition device (4), thereby ensuring the stability of combustion.

[0014] 4. The utility model uses three electrodes fixed on the annular plate (432) located at the lower part of the combustion cover (43), wherein the arc release distance H is always maintained between the first electrode (441) and the second electrode (442), thereby preventing arcing between the electrodes and the inner wall of the combustion tube (3), ensuring combustion reliability and safety, and improving combustion efficiency. The third electrode (443) placed opposite the first electrode (441) and the second electrode (442) can sense the internal temperature of the combustion chamber in real time and reflect the internal combustion status. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall cross-sectional structure of an embodiment of the utility model;

[0016] Figure 2 This is a schematic cross-sectional view of the gas mixing cover 41 in the embodiment of the present utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the air guide plate 5 in the embodiment of the present utility model;

[0018] Figure 4 This is a structural diagram of the ignition device 4 in the embodiment of the present utility model. DETAILED DESCRIPTION

[0019] Figure 1 As shown, the embodiment of the present invention provides a combustion chamber device for a gas heater for a transport vehicle, comprising: a heat exchanger 1, a mounting platform 2, and a combustion tube 3, wherein the heat exchanger 1 is provided with a mounting platform 2 at the bottom, the combustion tube 3 is sleeved in the hollow cavity of the heat exchanger 1, the ignition device 4 is sleeved in the combustion tube 3, and the front end of the combustion tube 3 is provided with an air guide plate 5; the air guide plate 5 is composed of an annular frame 51 located at the upper part and a concave plate 52 located at the lower part; the ignition device 4 is composed of a gas mixing cover 41, a multi-layer combustion net 42, a combustion cover 43 and a plurality of electrodes 44, wherein the multi-layer combustion net 42 is sleeved in the gas mixing cover 41, and the upper end of the combustion cover 43 is sleeved. It is connected to the mixing cover 41, and the combustion cover 43 is composed of a flat plate 431 at the upper end and an annular plate 432 at the lower end, and the ring 433 is fixed between the flat plate 431 and the annular plate 432; the mixing cover 41 is composed of a convex plate 411 at the upper part and a conical frame 412 at the lower part; the conduit connecting plate 6 is fixed under the mounting platform 2, and a conducting hole 7 and an exhaust pipe 8 are provided under the heat exchanger 1; the lead-out section 91 of the gas conduit 9 fixed on the conduit connecting plate 6 is passed through the conducting hole 7, and the gas outlet end 92 of the gas conduit 9 passes through the first opening 521 and the second opening 111 and is connected in a sleeve manner in the ignition device 4.

[0020] Example 1: In this embodiment, the gas conduit 9 is preferably fixed to the conduit connecting plate 6 by welding or riveting, and then the whole is fixed to the mounting platform 2, which facilitates the installation and removal of the gas conduit 9.

[0021] In this embodiment, the combustion tube 3, the gas mixing cover 41, the multi-layer combustion net 42, the combustion cover 43, and the plurality of electrodes 44 are all made of stainless steel that can be burned for a long time and is resistant to high temperatures.

[0022] Figure 2As shown, the air mixing hood 41 is composed of a convex plate 411 located at the upper part and a conical frame 412 located at the lower part, wherein a second opening 111 is provided at the center of the convex plate 411, and a plurality of second air guide holes 112 are provided on the circumferential side of the convex plate 411, each of the second air guide holes 112 is connected to a second air guide vane 113, and each second air guide vane 113 is opened with respect to the convex plate 411 in the range of zero to ninety degrees and the opening direction is consistent.

[0023] Example 2: In order to ensure uniform mixing of the gas in the mixing hood 41, in a preferred embodiment, the second air guide holes 112 are arranged at equal intervals on the convex plate 411; the second air guide plates 113 connected to each second air guide hole 112 are located at the same position; and the angle between each second air guide plate 113 and the convex plate 411 is the same.

[0024] Another function of the gas mixing hood 41 is that when the heater is forcibly powered off, the gas mixing hood 41 can serve as the first barrier to the backflow of the high-temperature hot air flow in the combustion tube.

[0025] Figure 3 As shown, the air guide plate 5 is composed of a ring frame 51 located at the upper part and a concave plate 52 located at the lower part, wherein a first opening 521 is provided at the center of the concave plate 52, and a plurality of first air guide holes 522 are provided on the circumferential side of the concave plate 52, each first air guide hole 522 is connected to a first air guide piece 523, and each first air guide piece 523 is opened with respect to the concave plate 52 in the range of zero to ninety degrees and the opening direction is consistent.

[0026] Example 3: In order to allow the combustion air to enter the ignition device 4 evenly, in a preferred embodiment, the first air guide holes 522 are arranged at equal intervals on the concave plate 52; the first air guide plates 523 connected to each first air guide hole 522 are located at the same position; and the angle between each first air guide plate 523 and the concave plate 52 is the same.

[0027] Another function of the air guide plate 5 is that when the heater is forcibly powered off, the air guide plate 5 can act as a second barrier to the reverse flow of the high-temperature hot air flow in the combustion tube.

[0028] Figure 4 As shown, the combustion cover 43 is composed of a flat plate 431 at the upper end and an annular plate 432 at the lower end. The annular ring 433 is fixed between the flat plate 431 and the annular plate 432. The flat plate 431 at the upper end is provided with multiple circles of annular through holes 310, and the annular ring 433 is provided with multiple evacuation through holes 330. Multiple electrodes 44 are fixed on the annular plate 432.

[0029] Example 4: Further optimization is that the number of multiple electrodes 44 fixed on the annular plate 432 at the lower end of the combustion cover 43 is three, wherein an arc release distance H is set between the first electrode 441 and the second electrode 442, and the third electrode 443 is placed opposite the first electrode 441 and the second electrode 442.

Claims

1. A gas heater combustion chamber device for a transport vehicle, characterized by: include: A heat exchanger (1), a mounting platform (2), and a combustion tube (3), wherein the bottom of the heat exchanger (1) is provided with a mounting platform (2), the combustion tube (3) is sleeved in the hollow cavity of the heat exchanger (1), the ignition device (4) is sleeved in the combustion tube (3), and the front end of the combustion tube (3) is provided with an air guide plate (5); the air guide plate (5) is composed of an annular frame (51) located at the upper part and a concave plate (52) located at the lower part, wherein the concave plate (52) is provided with a first opening (521) at the center, and the concave plate (52) is provided with a plurality of air guide plates on the circumferential side. The first air guide holes (522) are connected to each first air guide hole (522); the ignition device (4) is composed of a gas mixing cover (41), a multi-layer combustion net (42), a combustion cover (43) and a plurality of electrodes (44); wherein the multi-layer combustion net (42) is sleeved in the gas mixing cover (41); the upper end of the combustion cover (43) is sleeved in the gas mixing cover (41); the combustion cover (43) is composed of a flat plate (431) at the upper end and an annular plate (432) at the lower end; the annular plate (43) is provided at the lower end. 3) is fixed between the flat plate (431) and the annular plate (432), the upper flat plate (431) is provided with a plurality of annular through holes (310), the annular ring (433) is provided with a plurality of evacuation through holes (330), and a plurality of electrodes (44) are fixed on the annular plate (432); the mixing cover (41) is composed of a convex plate (411) located at the upper part and a conical frame (412) located at the lower part, wherein the center of the convex plate (411) is provided with a second opening (111), and the circumferential side of the convex plate (411) is provided with a plurality of second air guides A second air guide plate (113) is connected to each second air guide hole (112); a conduit connecting plate (6) is fixed below the mounting platform (2); a conducting hole (7) and an exhaust gas exhaust pipe (8) are provided below the heat exchanger (1); a gas conduit (9) lead-out section (91) fixed to the conduit connecting plate (6) is passed through the conducting hole (7), and a gas outlet end (92) of the gas conduit (9) passes through the first opening (521) and the second opening (111) and is connected to the ignition device (4).

2. The combustion chamber device of the gas heater for transport vehicles according to claim 1, characterized in that: Each first air guide piece (523) is opened to the concave plate (52) in the range of 0 to 90 degrees and the opening direction is consistent. The first air guide holes (522) are arranged on the concave plate (52) at equal intervals. The first air guide pieces (523) connected to each first air guide hole (522) are located at the same position. The angle between each first air guide piece (523) and the concave plate (52) is the same. Each second air guide piece (113) is opened to the convex plate (411) in the range of 0 to 90 degrees and the opening direction is consistent.

3. The combustion chamber device of the gas heater for a transport vehicle according to claim 1, characterized in that: The second air guide holes (112) are arranged at equal intervals on the convex plate (411); the second air guide pieces (113) connected to each second air guide hole (112) are located at the same position; and the angle between each second air guide piece (113) and the convex plate (411) is the same.

4. The combustion chamber device of the gas heater for a transport vehicle according to claim 1, characterized in that: Three electrodes (44) are fixed on an annular plate (432) at the lower end of a combustion hood (43), wherein an arc release distance H is provided between a first electrode (441) and a second electrode (442), and a third electrode (443) is placed opposite the first electrode (441) and the second electrode (442).

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