Ignition device and ignition unit for multi-path ignition

Abstract

The utility model relates to an ignition device and an ignition unit for multi-path ignition. The ignition device comprises a shell, and a center ignition cavity and a plurality of fire transfer channels arranged around the center ignition cavity at intervals are formed in the shell. The front end of the fire transfer channel is communicated with the central ignition cavity; and the igniter is arranged in the central ignition cavity. The tail end ignition parts are arranged at the tail ends of the fire transfer channels in a one-to-one correspondence mode. When the igniter is ignited, flames generated by the igniter can ignite the tail end ignition piece through the fire transfer channel, and flames generated by the tail end ignition piece can be ejected outwards. The device has the beneficial effects that the synchronism is high, a plurality of tail end ignition parts can be ignited at the same time, and the requirement that a plurality of grains on the ignited parts are ignited at the same time is met. The needed energy is small, the size is small, the cost is low, only one igniter needs to be ignited, the needed energy is small, and the space occupied by the igniter and the cost are saved.

Description

Technical Field

[0001] This utility model relates to the field of igniter technology, and in particular to an ignition device and ignition unit for multi-channel ignition. Background Technology

[0002] Currently, ignition devices using semiconductor igniters generally employ short-range dual-circuit redundant design and short-range single-circuit design, both used for igniting a single location. The ignition principle of the aforementioned ignition devices is as follows: the igniter in the ignition device uses an externally generated current signal to heat the thermal bridge wire, igniting the sensitive ignition propellant in contact with it. The ignition propellant ignites the ignition propellant in the main propellant box below, and the flame is output through the ignition channel left at the bottom of the propellant box, igniting the agent to be ignited, thus achieving the ignition function.

[0003] The aforementioned ignition device has a single function, igniting only one point. When applying it to ignite multiple points of a large component that needs to be ignited simultaneously, multiple ignition devices must be installed to ignite them separately. This ignition method has the following problems:

[0004] (a) Poor synchronization: Signal reception from multiple ignition devices is delayed, making it difficult for the igniters to ignite simultaneously, failing to meet the requirement of simultaneous ignition of multiple parts. (b) High energy requirement: Each igniter requires an independent external excitation current signal. If multiple igniters ignite simultaneously, the total energy required is large, and some devices cannot provide sufficient excitation energy. (c) Large size and high cost: Multiple igniters occupy a large overall volume, making it difficult to fit within a space-efficient device. This also sacrifices the volume of fuel used in the device, the device's movement distance, and the energy it can generate. Furthermore, the use of multiple igniters increases the device cost. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides an ignition device and ignition unit for multi-channel ignition, which solves the problems of poor synchronization, large energy requirement, large size and high cost when multiple ignition devices simultaneously ignite multiple parts of a large ignitable component.

[0007] Technical issues.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0010] In a first aspect, embodiments of the present invention provide an ignition device for multi-channel ignition, comprising:

[0011] The housing has a central ignition chamber and a plurality of fire transmission channels arranged at intervals around the central ignition chamber; the front end of each fire transmission channel is connected to the central ignition chamber.

[0012] An igniter is located inside the central ignition chamber;

[0013] Multiple end ignition elements are respectively disposed at the ends of the multiple fire transmission channels;

[0014] When the igniter is ignited, the flame generated by the igniter can ignite the end ignition element through the ignition channel, and the flame generated by the end ignition element can be ejected outward.

[0015] According to this utility model, the housing includes:

[0016] The central part is a vertically oriented cylindrical body, and the central ignition chamber is formed inside it;

[0017] Multiple branches are arranged at intervals around the outer periphery of the central part; each branch is a tube, with its front end extending horizontally to the central part and its end extending vertically, forming the fire transmission channel inside.

[0018] According to this utility model, the end ignition element includes:

[0019] A sleeve is fitted onto the outer periphery of the end of the branch;

[0020] A retaining ring is detachably fixed to the bottom of the sleeve, and an ignition hole is provided in the center of the retaining ring;

[0021] The first gunpowder box is inserted into the space enclosed by the inner circumference of the sleeve, the end of the branch, and the top of the retaining ring;

[0022] The ignition channel, the first gunpowder column in the first gunpowder box, and the ignition hole correspond one-to-one from top to bottom.

[0023] According to this utility model, the retaining ring is threaded onto the sleeve.

[0024] According to this utility model, a metal baffle is fixedly provided at the bottom of the first gunpowder box, and the metal baffle is used to close the bottom of the first gunpowder column.

[0025] According to this utility model, a second gunpowder box is provided between the front end and the end end of the branch;

[0026] The ignition channel corresponds to both ends of the second gunpowder column inside the second gunpowder box;

[0027] When the igniter is lit, the flame generated by the igniter can ignite the second gunpowder column in the second gunpowder box through the ignition channel, and the flame generated by the second gunpowder column reaches the end ignition element through the ignition channel.

[0028] According to this utility model, the front end and the end end of the branch are disconnected to form two opposing interfaces, and the two ends of the gunpowder shell of the second gunpowder box are threaded to the two interfaces.

[0029] According to this utility model, the igniter is a semiconductor igniter.

[0030] Secondly, this utility model also provides an ignition unit, including the aforementioned ignition device for multi-channel ignition, and also includes an ignited component;

[0031] The ignition device is positioned above the ignited component, and the plurality of terminal ignition elements correspond one-to-one with the plurality of propellant columns on the ignited component.

[0032] (III) Beneficial Effects

[0033] The ignition device and ignition unit for multi-channel ignition provided by this utility model can transmit the flame generated by igniting one igniter through multiple flame transmission channels and ignite multiple terminal igniters, so that the flames emitted by the multiple terminal igniters can simultaneously ignite multiple propellant columns on the ignited component, thereby enabling the ignited component to burn rapidly and achieving the following beneficial effects:

[0034] High synchronization: Multiple terminal ignition elements can be ignited simultaneously, satisfying the requirement that multiple propellant columns on the ignited element be ignited at the same time.

[0035] It requires little energy, is small in size, and is low in cost: it only requires igniting one igniter, which requires less energy and saves space and cost associated with the igniter. Attached Figure Description

[0036] Figure 1 This is a cross-sectional view of the ignition device of this utility model without a second gunpowder box;

[0037] Figure 2 for Figure 1 Top view;

[0038] Figure 3 This is a cross-sectional view of the ignition device with a second gunpowder box according to the present invention.

[0039] Figure 4 for Figure 3 Top view;

[0040] Figure 5 This is a cross-sectional view of the igniter;

[0041] Figure 6 This is a cross-sectional view of the end ignition element.

[0042] [Explanation of Labels in the Attached Image]

[0043] 1: Shell; 11: Central section; 111: Central ignition chamber; 12: Branch section; 121: Ignition channel;

[0044] 2: Igniter; 21: Mounting housing; 22: Metal feet; 23: Thermal bridge wire; 24: Medicine box;

[0045] 3: End ignition element; 31: Sleeve; 32: First powder box; 321: First powder column; 33: Retaining ring; 331: Ignition hole;

[0046] 4: Second gunpowder box; 41: Second gunpowder column. Detailed Implementation

[0047] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. In this document, directional terms such as "upper" and "lower" are used interchangeably with... Figure 1 The orientation is used as a reference.

[0048] See Figures 1-6 The ignition device for multi-channel ignition proposed in this embodiment of the invention is used to simultaneously ignite multiple propellant charges on the ignited component to rapidly ignite the component. This ignition device includes a housing 1, an igniter 2, and multiple end ignition elements 3.

[0049] The housing 1 has a central ignition chamber 111 and a plurality of flame transmission channels 121 arranged at intervals around the central ignition chamber 111. The front end of the flame transmission channel 121 is connected to the central ignition chamber 111. The igniter 2 is located inside the central ignition chamber 111. A plurality of end ignition elements 3 are correspondingly located at the ends of the plurality of flame transmission channels 121.

[0050] When the igniter 2 is ignited, the flame generated by the igniter 2 can ignite the end ignition element 3 through the flame transmission channel 121, and the flame generated by the end ignition element 3 can be ejected outward.

[0051] Therefore, this ignition device can transmit the flame generated by igniting one igniter 2 through multiple ignition channels 121 and ignite multiple end igniters 3, so that the flames emitted by multiple end igniters 3 can simultaneously ignite multiple propellant columns on the ignited component, so that the ignited component can burn rapidly.

[0052] Based on the above settings, this ignition device has the following beneficial effects:

[0053] High synchronization: Multiple end ignition elements 3 can be ignited simultaneously, satisfying the requirement that multiple propellant columns on the ignited element be ignited at the same time.

[0054] It requires little energy, is small in size, and is low in cost: it only requires igniting one igniter, which requires less energy and saves space and cost associated with the igniter.

[0055] Furthermore, the housing 1 includes a central portion 11 and multiple branch portions 12.

[0056] The central section 11 is a vertically oriented cylindrical body, forming a central ignition chamber 111 inside. Multiple branches 12 are arranged at intervals around the outer periphery of the central section 11. Each branch 12 is a tube, with its front end extending horizontally to the central section 11 and its end extending vertically, forming a flame transmission channel 121 inside. This allows the flame emitted by the igniter 2 located at the center of the housing 1 to extend horizontally a certain distance into the multiple flame transmission channels around it before being transmitted downwards to the end ignition element 3 for ejection, thereby extending the flame transmission length and igniting multiple propellant columns arranged in a ring array on the larger ignited component.

[0057] The length of the horizontal section of the branch 12 is set to match the radius of the ring formed by the multiple propellant columns on the ignited component. The multiple end ignition elements 3 can correspond one-to-one with the multiple propellant columns on the ignited component to ignite the multiple propellant columns at the same time and enable the ignited component to burn rapidly.

[0058] Furthermore, igniter 2 is a semiconductor igniter.

[0059] The specific structure of igniter 2 is as follows:

[0060] The igniter 2 includes a through-hole mounting housing 21, and two metal feet 22, a thermal bridge wire 23, a propellant cartridge 24, and a metal baffle disposed within the mounting housing 21. The upper ends of the two metal feet 22 are used to connect to the power supply, and the lower ends of the two metal feet 22 are connected to the thermal bridge wire 23. The thermal bridge wire 23 is wrapped with sensitive gunpowder, and the propellant cartridge 24 is disposed below the thermal bridge wire 23. The metal baffle is fixed to the bottom of the propellant cartridge 24 to seal the propellant column inside the propellant cartridge 24.

[0061] When the metal foot 22 receives an external excitation current signal that causes the thermal bridge wire 23 to heat up, the thermal bridge wire 23 can ignite the sensitive gunpowder wrapped on it. The flame emitted by the sensitive gunpowder ignites the gunpowder in the gunpowder box 24 below. The flame generated by the burning gunpowder penetrates the metal baffle and is ejected from the bottom opening of the mounting shell 21, and then enters the ignition channel 121 for transmission.

[0062] Specifically, the metal baffle is bonded to or connected to the mounting housing 21 by screws.

[0063] Furthermore, the end ignition component 3 includes a sleeve 31, a retaining ring 33, and a first gunpowder box 32.

[0064] The sleeve 31 is fitted onto the outer periphery of the end of the branch 12. The retaining ring 33 is detachably fixed to the bottom of the sleeve 31, and an ignition hole 331 is formed in the center of the retaining ring 33. The first gunpowder box 32 is inserted into the space enclosed by the inner periphery of the sleeve 31, the end of the branch 12, and the top of the retaining ring 33. The ignition channel 121, the first gunpowder column 321 in the first gunpowder box 32, and the ignition hole 331 correspond one-to-one from top to bottom.

[0065] When the igniter 2 is lit, the flame transmitted through the flame transmission channel 121 can ignite the first gunpowder column 321, and the flame emitted by the first gunpowder column 321 can be ejected outward through the ignition hole 331.

[0066] Specifically, the first powder box 32 is cylindrical, and the first powder box 32 contains the first powder column 321. The end of the branch 12 and the top of the retaining ring 33 respectively press against the upper and lower ends of the first powder box 32 to fix the position of the first powder box 32.

[0067] Specifically, the retaining ring 33 is threaded onto the sleeve 31 for easy installation.

[0068] Specifically, to prevent the first gunpowder column 321 inside the first gunpowder box 32 from detaching, a metal baffle is fixedly installed at the bottom of the first gunpowder box 32. The metal baffle is used to seal the bottom of the first gunpowder column 321.

[0069] When the first gunpowder column 321 is ignited, the flame can burn through the metal baffle and be output through the ignition hole 331.

[0070] Specifically, the metal baffle is bonded or connected to the first powder box 32 by screws.

[0071] See Figure 3 and Figure 4 Furthermore, when the size of the ignited component is large, the radius of the ring formed by the multiple propellant columns arranged on it is also large. Correspondingly, the horizontal section of the branch 12 needs to be longer. At this time, the flame emitted by the igniter 2 is prone to attenuation during the directional transmission within the ignition channel 121. The attenuated flame has insufficient heat and may fail to ignite the terminal igniter 3.

[0072] Therefore, to ensure that the end ignition element 3 can be ignited when the ignition channel 121 is relatively long, this application provides a second powder box 4 between the front end and the end end of the branch 12, and the ignition channel 121 corresponds to the two ends of the second powder column 41 inside the second powder box 4.

[0073] When the igniter 2 is lit, the flame generated by the igniter 2 can ignite the second gunpowder column 41 in the second gunpowder box 4 through the ignition channel 121, and the flame generated by the second gunpowder column 41 reaches the end ignition element 3 through the ignition channel 121.

[0074] In actual setup, the placement of the second powder box 4 on the ignition pipe 121 can be determined by the attenuation of the flame intensity generated by the amount of powder in the igniter 2 within a certain length of the ignition channel 121 and the flame intensity required to ignite the second powder box 4.

[0075] Specifically, to facilitate the connection between the second powder box 4 and the branch 12, the front end and the end end of the branch 12 are disconnected to form two opposing interfaces, and the two ends of the second powder box 4 are threaded to the two interfaces.

[0076] The second gunpowder box 4 is cylindrical and contains the second gunpowder column 41.

[0077] Preferably, both the first gunpowder column 321 and the second gunpowder column 41 are sensitive gunpowders for rapid combustion.

[0078] Example 2

[0079] Based on Embodiment 1, this embodiment also provides an ignition unit, including the ignition device and the ignited component as described in Embodiment 1.

[0080] The ignition device is located above the part to be ignited, and multiple end ignition elements 3 correspond one-to-one with multiple propellant columns on the part to be ignited.

[0081] When the igniter 2 is ignited, the flame generated by the igniter 2 can ignite the end igniter 3 through the ignition channel 121. The flame generated by the end igniter 3 can ignite the corresponding propellant on the ignited part, so that multiple propellant on the ignited part can be ignited at the same time, and the ignited part can burn rapidly.

[0082] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An ignition device for multi-channel ignition, characterized in that, include: The housing (1) has a central ignition cavity (111) and a plurality of fire transmission channels (121) arranged at intervals around the central ignition cavity (111); the front end of the fire transmission channel (121) is connected to the central ignition cavity (111). Igniter (2) is located inside the central ignition chamber (111); Multiple end ignition elements (3) are respectively disposed at the ends of multiple fire transmission channels (121); When the igniter (2) is ignited, the flame generated by the igniter (2) can ignite the end ignition element (3) through the fire transmission channel (121), and the flame generated by the end ignition element (3) can be ejected outward.

2. The ignition device for multi-channel ignition as described in claim 1, characterized in that, The housing (1) includes: The central part (11) is a vertically oriented cylinder, and the central ignition chamber (111) is formed inside it; Multiple branches (12) are arranged at intervals around the outer periphery of the central part (11); each branch (12) is a tube, with its front end extending horizontally to the central part (11) and its end extending vertically, forming the fire transmission channel (121) inside.

3. The ignition device for multi-channel ignition as described in claim 2, characterized in that, The terminal ignition element (3) includes: A sleeve (31) is fitted onto the outer periphery of the end of the branch (12); A retaining ring (33) is detachably fixed to the bottom of the sleeve (31), and an ignition hole (331) is opened in the center of the retaining ring (33); The first gunpowder box (32) is inserted into the space enclosed by the inner circumference of the sleeve (31), the end of the branch (12) and the top of the retaining ring (33); The fire transmission channel (121), the first gunpowder column (321) in the first gunpowder box (32) and the ignition hole (331) correspond one-to-one from top to bottom.

4. The ignition device for multi-channel ignition as described in claim 3, characterized in that, The retaining ring (33) is threaded onto the sleeve (31).

5. The ignition device for multi-channel ignition as described in claim 3, characterized in that, A metal baffle is fixedly provided at the bottom of the first gunpowder box (32), and the metal baffle is used to close the bottom of the first gunpowder column (321).

6. The ignition device for multi-channel ignition as described in claim 3, characterized in that, A second gunpowder box (4) is provided between the front end and the end end of the branch (12); The ignition channel (121) corresponds to both ends of the second gunpowder column (41) inside the second gunpowder box (4); When the igniter (2) is ignited, the flame generated by the igniter (2) can ignite the second gunpowder column (41) in the second gunpowder box (4) through the fire transmission channel (121), and the flame generated by the second gunpowder column (41) reaches the end ignition element (3) through the fire transmission channel (121).

7. The ignition device for multi-channel ignition as described in claim 6, characterized in that, The front end and the end end of the branch (12) are disconnected to form two opposing interfaces, and the two ends of the gunpowder shell of the second gunpowder box (4) are threaded to the two interfaces.

8. The ignition device for multi-channel ignition as described in any one of claims 1-7, characterized in that, The igniter (2) is a semiconductor igniter.

9. An ignition unit, comprising the ignition device for multi-channel ignition as described in any one of claims 1-8, characterized in that, It also includes the ignited parts; The ignition device is disposed above the ignited component, and the plurality of terminal ignition components (3) correspond one-to-one with the plurality of propellant columns on the ignited component.

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