CN219327584U - Nested double-jet injector - Google Patents
Nested double-jet injector Download PDFInfo
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- CN219327584U CN219327584U CN202223594407.0U CN202223594407U CN219327584U CN 219327584 U CN219327584 U CN 219327584U CN 202223594407 U CN202223594407 U CN 202223594407U CN 219327584 U CN219327584 U CN 219327584U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The nested double-jet injector comprises a central injector and an outer ring injector, wherein the central injector is nested in a middle hole of the outer ring injector, and the central injector and the outer ring injector are fixedly connected together in a sealing way; the central injector and the outer ring injector adopt double-liquid injection or mainly liquid injection and secondarily gas injection. The utility model integrates two kinds of injectors, can reduce the occupied space, and is suitable for engine systems with limited space. The utility model can also independently control injection in the central area and the outer ring area of the spray head, and the fuel spray granularity is obviously reduced by using the fuel and gas independent control injection mode, thereby improving the performance of the engine, reducing the oil consumption and the emission, and having wider application fields.
Description
Technical Field
The utility model relates to a solenoid valve type injector for injecting media of multiple types, in particular to a nested double-injector.
Background
In existing engine systems employing dual fuel, dual medium versions, two types of injectors need to be arranged in two locations. However, the two positions need to occupy more engine boundary space, which affects the arrangement of other parts such as spark plugs and air inlets of the engine, and is not suitable for engine systems with limited space.
In addition, in the existing engine system using low pressure injection (100 to 500 kPa), the granularity of the injected fuel spray is difficult to be further optimized due to the limitation of the oil pressure.
Disclosure of Invention
The utility model aims to solve the technical problems that: a nested dual-jet injector is provided that occupies a small space and is suitable for use in engine systems having limited space.
The technical scheme for solving the technical problems is as follows: the nested double-jet injector comprises a central injector and an outer ring injector, wherein the central injector is nested in a middle hole of the outer ring injector, and the central injector and the outer ring injector are fixedly connected together in a sealing way.
The utility model further adopts the technical scheme that: the central injector adopts liquid fuel injection, and the outer ring injector adopts liquid fuel injection or gas injection.
The utility model further adopts the technical scheme that: the outer ring injector comprises an outer ring liquid inlet component, an outer ring magnetic circuit component for generating electromagnetic force, an outer ring flow adjusting component for adjusting and controlling liquid flow characteristics and atomization characteristics, and an outer ring valve component for generating a switching valve action under the action of the electromagnetic force, wherein the outer ring liquid inlet component is arranged at a liquid inlet of the outer ring magnetic circuit component, and the outer ring flow adjusting component and the outer ring valve component are sequentially arranged in the outer ring magnetic circuit component from top to bottom; the central injector is arranged in the middle holes of the outer ring flow adjusting component and the outer ring valve component.
The utility model further adopts the technical scheme that: the outer ring magnetic circuit assembly comprises an outer ring shell, an outer ring electrode, an outer ring magnetic conduction sleeve I, an outer ring magnetic conduction sleeve II, an outer ring coil assembly and an outer ring main shaft; the middle part of the outer ring main shaft is arranged in the outer ring shell, and the upper end of the outer ring main shaft is connected with the outer ring liquid inlet component; the outer ring main shaft is internally provided with the outer ring flow adjusting component and the outer ring valve component in sequence; the outer ring coil assembly is sleeved on the outer ring spindle and is connected with an outer ring electrode arranged in the outer ring shell electric connector jack; the outer ring magnetic conduction sleeve I is arranged between the outer ring coil assembly and the outer ring shell, and the outer ring magnetic conduction sleeve II is inlaid between the outer ring magnetic conduction sleeve I at the top end part of the outer ring coil assembly and the outer ring main shaft.
The utility model further adopts the technical scheme that: the outer ring valve assembly is a liquid valve assembly and comprises a liquid valve core, a liquid valve seat, a liquid sealing insert and a liquid guide vane, wherein the liquid valve core is arranged in a stepped hole at the lower end of the outer ring main shaft, and the liquid sealing insert is arranged at the end part of the bottom end of the liquid valve core; the liquid valve seat is arranged at the bottom end of the outer ring main shaft, the small end of the liquid valve seat is positioned in the liquid valve core, the end face of the top end of the large end of the liquid valve seat is in sealing fit with the liquid sealing insert, the large end of the liquid valve seat is sequentially provided with a liquid flow passage groove, a liquid flow passage hole, a liquid turbulence cavity and a guide vane mounting hole I from top to bottom, and the liquid flow passage hole is used for communicating the liquid flow passage groove with the liquid turbulence cavity; the liquid guide vane is arranged in the guide vane mounting hole I, and is provided with a straight jet hole which is communicated with the liquid turbulence cavity; the central injector is arranged in the middle holes of the liquid valve core and the liquid valve seat.
The utility model further adopts the technical scheme that: the outer ring valve assembly is a gas valve assembly, the gas valve assembly comprises a gas valve core, a gas valve seat, a gas sealing insert and a gas guide vane, the gas valve core is arranged in a stepped hole at the lower end of the outer ring main shaft, and the gas sealing insert is arranged at the end part of the bottom end of the gas valve core; the gas valve seat is arranged at the bottom end of the outer ring main shaft, the small end of the gas valve seat is positioned in the gas valve core, the end face of the top end of the large end of the gas valve seat is in sealing fit with the gas sealing insert, the large end of the gas valve seat is sequentially provided with a gas flow passage groove, a gas flow passage hole, a gas turbulence cavity and a guide vane mounting hole II from top to bottom, the gas flow passage hole is used for communicating the gas flow passage groove with the gas turbulence cavity, and an inward inclined plane is arranged at the inner side of the gas turbulence cavity; the gas guide sheet is arranged in the guide sheet mounting hole II, the middle hole of the gas guide sheet is a reverse taper hole, and a gas jet hole which is obliquely sprayed towards the center is formed between the wall of the reverse taper hole and the inclined plane of the gas turbulence cavity; the central injector is arranged in the middle holes of the gas valve core and the gas valve seat.
The utility model further adopts the technical scheme that: the outer ring flow adjusting assembly comprises an outer ring limiting pipe and an outer ring return spring, the outer ring limiting pipe is fixedly arranged in the middle of an inner hole of the outer ring main shaft, one end of the outer ring return spring is connected with the bottom end part of the outer ring limiting pipe, and the other end of the outer ring return spring is connected with the top end part of the liquid valve core or the gas valve core; the outer ring liquid inlet assembly comprises an outer ring filter screen and a connecting bent pipe, wherein the bottom end of the connecting bent pipe is arranged at the upper end of the outer ring main shaft, and the outer ring filter screen is arranged at a liquid inlet at the top end of the connecting bent pipe.
The utility model further adopts the technical scheme that: the central sprayer include central feed liquor subassembly, be used for producing the central magnetic circuit subassembly of electromagnetic force, be used for adjusting the central flow adjustment subassembly of control liquid flow characteristic and atomizing characteristic, be used for producing the central valve subassembly of switch valve action under the electromagnetic force effect, central feed liquor subassembly install in the feed liquor mouth department of central magnetic circuit subassembly, central flow adjustment subassembly, central valve subassembly from top to bottom install in proper order in central magnetic circuit subassembly.
The utility model further adopts the technical scheme that: the central magnetic circuit assembly comprises a central shell, a central electrode, a central magnetic conduction sleeve I, a central coil assembly, a central magnetism isolating sleeve, a central magnetic conduction sleeve II and a central spindle; the central main shaft is arranged in the central shell, the upper end of the central main shaft is connected with the central liquid inlet component, the lower end of the central main shaft is fixedly connected with the central magnetism isolating sleeve, the central flow adjusting component is arranged in the central main shaft, and the central valve component is arranged at the bottom end of the central main shaft; the central coil assembly is sleeved on the outer circle of the lower end of the central spindle and the outer circle of the upper end of the central magnetism isolating sleeve, and is connected with a central electrode positioned in the electric connector jack of the central shell; the magnetic shielding device is characterized in that the central magnetic shielding sleeve I is sleeved outside the central magnetic shielding sleeve, the upper end of the central magnetic shielding sleeve I is located in the central shell, the central coil assembly is installed between the central magnetic shielding sleeve I and the central magnetic shielding sleeve, and the central magnetic shielding sleeve II is inlaid between a central spindle at the top end of the central coil assembly and the central magnetic shielding sleeve I.
The utility model further adopts the technical scheme that: the central valve assembly comprises a central valve core, a central valve seat, a steel ball and a central guide vane, wherein the central valve core is arranged in a central magnetism isolating sleeve, the top end of the central valve core is positioned at the bottom of a central main shaft, the bottom end of the central valve core is fixedly connected with the steel ball, the central valve seat is arranged at the bottom end of the central magnetism isolating sleeve, the steel ball is in sealing fit with a valve hole of the central valve seat, the central guide vane is arranged in a multi-step hole at the bottom end of the central valve seat, and a central injection hole is formed in the central guide vane;
the central flow adjusting assembly comprises a central limiting pipe and a central return spring, the central limiting pipe is arranged in the central spindle, one end of the central return spring is connected with the bottom end part of the central limiting pipe, and the other end of the central return spring is connected with the top end part of the central valve core;
the central liquid inlet assembly comprises a central filter screen and a central connecting pipe, the central connecting pipe is arranged at a liquid inlet of the central shell, the bottom end of the central connecting pipe is connected with the top end of the central main shaft, and the central filter screen is arranged in the central connecting pipe.
By adopting the structure, compared with the prior art, the nested double-spray injector has the following beneficial effects: 1. the occupied space is smaller
The utility model comprises a central injector and an outer ring injector, wherein the central injector is nested in a middle hole of the outer ring injector, and the central injector and the outer ring injector are fixedly connected together in a sealing way. The utility model integrates two kinds of ejectors into a whole, has more compact structure, can greatly reduce occupied space, is more convenient to be arranged on an engine, and can be suitable for an engine system with limited space.
2. Good atomization performance
The utility model includes a center injector that uses liquid fuel injection and an outer ring injector that uses liquid fuel injection or gas injection. Therefore, the utility model can realize the simultaneous liquid fuel injection and gas injection at the same position, can further crush fuel spray particles through the high-speed impact and volume expansion effects of the gas, can obviously reduce the spray particles under the condition of low oil pressure, has good atomization performance, can strengthen the fuel-gas mixing effect and evaporation effect, improves the fuel combustion efficiency, and improves the engine performance and reduces the oil consumption and emission.
3. The spray can be independently controlled in the central region and the outer ring region of the spray head
The utility model comprises a central injector and an outer ring injector, wherein the central injector can realize the independent control injection of the central area of the spray head, and the outer ring injector can realize the independent control injection of the outer ring area of the spray head, thereby realizing the independent injection of different liquid fuels or liquid fuels and gases and greatly improving the performance of the engine.
4. Wide application scene
(1) The center injector and the outer ring injector of the present utility model may be provided in a dual injection form of methanol fuel, gasoline fuel. The problem of difficult ignition of the methanol fuel at low temperature can be solved by gasoline ignition, and the methanol is used as common fuel after the state of the engine is stable.
(2) The center injector and the outer ring injector of the present utility model may be provided in a dual injection form of liquid fuel, water. The liquid fuel supplies oil to the engine, and after water is sprayed out, the temperature of the air inlet channel can be reduced, so that the high-temperature expansion effect of inlet air is reduced, the inlet air molar mass and the oxygen amount are improved under the same space volume, and the performance of the engine is conveniently improved.
(3) The center injector and the outer ring injector of the present utility model may be provided in a dual injection form of liquid fuel, gas. The fuel spray particles can be further crushed through the high-speed impact and volume expansion effects of the gas, so that the fuel-gas mixing effect and the evaporation effect are enhanced, the fuel combustion efficiency is improved, the engine performance is improved, and the oil consumption and the emission are reduced.
The technical features of the nested dual-jet injector of the present utility model are further described below with reference to the drawings and examples.
Drawings
Fig. 1: example-the nested dual jet injector of the present utility model is shown schematically in its construction,
fig. 2: the first and second embodiments are schematic structural diagrams of the central injector,
fig. 3: embodiment-a schematic structural view of the outer ring injector,
fig. 4: embodiment one of the present utility model is a dual liquid jet head structure schematic diagram and a jet head jet area schematic diagram,
fig. 5: embodiment II the nested dual jet injector of the present utility model is shown schematically,
fig. 6: embodiment two the outer ring injector is a schematic structural diagram,
fig. 7: in the second embodiment, the liquid and gas spraying nozzle structure schematic diagram and the nozzle spraying area schematic diagram are provided;
in the above figures, the reference numerals are as follows:
1-a central injector, which is arranged on the bottom of the injector,
11-a central liquid inlet component, 111-a central filter screen, 112-a central connecting pipe and 113-a central sealing ring;
12-a central magnetic circuit assembly, 121-a central housing, 122-a central electrode, 123-a central magnetic conducting sleeve I,
124-center coil assembly, 125-center magnetism isolating sleeve, 126-center magnetism conducting sleeve II, 127-center main shaft;
13-a central flow adjusting assembly, 131-a central limiting tube, 132-a central return spring;
14-center valve assembly, 141-center valve core, 142-center valve seat, 143-steel ball,
144-a central guide vane, 1441-a central injection hole;
a 2-outer ring injector, which is arranged on the outer ring,
21-an outer ring liquid inlet assembly, 211-an outer ring filter screen, 212-a connecting bent pipe and 213-an outer ring sealing ring;
22-outer ring magnetic circuit components, 221-outer ring shells, 222-outer ring electrodes, 223-outer ring magnetic conduction sleeves I, 224-outer ring magnetic conduction sleeves II, 225-outer ring coil components and 226-outer ring main shafts;
23-an outer ring flow adjusting assembly, 231-an outer ring limiting pipe and 232-an outer ring return spring;
a 24-outer ring valve assembly,
241-liquid valve assembly, 2411-liquid valve cartridge;
2412-a liquid valve seat, 24121-a liquid flow-through groove, 24122-a liquid flow-through hole, 24123-a liquid turbulence chamber,
2413-liquid sealing insert, 2414-liquid deflector, 24141-straight injection orifice, 2415-O-ring i;
242-external ring valve assembly, 2421-gas valve core,
2422-a gas valve seat, 24221-a gas flow channel, 24222-a gas flow channel, 24223-a gas turbulence chamber,
2423-a gas seal insert, 2424-a gas deflector, 2425-O-ring ii;
3-sealing welds at the outer ring injector nozzles,
4-sealing weld joint between central injector and middle part of outer ring injector.
Detailed Description
Example 1
The nested double-jet ejector disclosed in fig. 1 comprises a central ejector 1 and an outer ring ejector 2, wherein the central ejector 1 is nested in a central hole of the outer ring ejector 2, and the central ejector 1 and the outer ring ejector 2 are fixedly connected together through welding and sealing at the middle part, the spray head and the like respectively. The central injector 1 and the outer ring injector 2 are both injected in a double-liquid mode of liquid fuel.
The central injector 1 adopts a conventional electromagnetic valve type injector structure and comprises a central liquid inlet component 11, a central magnetic circuit component 12 for generating electromagnetic force, a central flow adjusting component 13 for adjusting and controlling the liquid flow characteristic and atomization characteristic, and a central valve component 14 (see figure 2) for generating valve opening and closing actions and realizing sealing function under the electromagnetic force, wherein the central liquid inlet component 11 is arranged at a liquid inlet of the central magnetic circuit component 12, and the central flow adjusting component 13 and the central valve component 14 are sequentially arranged in the central magnetic circuit component 12 from top to bottom.
The central magnetic circuit assembly 12 comprises a central shell 121, a central electrode 122, a central magnetic conduction sleeve I123, a central coil assembly 124, a central magnetism isolating sleeve 125, a central magnetic conduction sleeve II 126 and a central main shaft 127; the central spindle 127 is arranged in the central shell 121, the upper end of the central spindle 127 is connected with the central liquid inlet component 11, the lower end of the central spindle 127 is fixedly connected with the central magnetism isolating sleeve 125, the central flow adjusting component 13 is arranged in the central spindle 127, and the bottom end of the central spindle 127 is provided with the central valve component 14; the central coil assembly 124 is sleeved on the lower outer circle of the central spindle 127 and the upper outer circle of the central magnetism isolating sleeve 125, and the central coil assembly 124 is connected with the central electrode 122 positioned in the electric connector jack of the central housing 121; the central magnetic conduction sleeve I123 is sleeved outside the central magnetic isolation sleeve 125, the upper end of the central magnetic conduction sleeve I123 is located in the central housing 121, the central coil assembly 124 is installed between the central magnetic conduction sleeve I123 and the central magnetic isolation sleeve 125, and the central magnetic conduction sleeve II 126 is inlaid between the central spindle 127 at the top end of the central coil assembly 124 and the central magnetic conduction sleeve I123.
The central liquid inlet assembly 11 comprises a central filter screen 111, a central connecting pipe 112 and a central sealing ring 113, wherein the central connecting pipe 112 is arranged at a liquid inlet of the central housing 121, the bottom end of the central connecting pipe 112 is connected with the top end of the central main shaft 127, the central filter screen 111 is arranged in the central connecting pipe 112, and the central sealing ring 113 is sleeved on the outer circle of the top end of the central connecting pipe 112.
The central valve assembly 14 comprises a central valve core 141, a central valve seat 142, a steel ball 143 and a central guide vane 144, wherein the central valve core 141 is installed in a central magnetism isolating sleeve 125, the top end of the central valve core 141 is positioned at the bottom of a central spindle 127, a spring installation hole I is formed in the upper end of the central valve core 141, the bottom end of the central valve core 141 is fixedly connected with the steel ball 143, the central valve seat 142 is installed at the bottom end of the central magnetism isolating sleeve 125, the steel ball 143 is in sealing fit with a valve hole of the central valve seat 142, the central guide vane 144 is installed in a multi-step hole at the bottom end of the central valve seat 142, and a central injection hole 1441 is formed in the central guide vane 144.
The central flow adjusting assembly 13 comprises a central limiting tube 131 and a central return spring 132, wherein the central limiting tube 131 is arranged in the central spindle 127, one end of the central return spring 132 is connected with the bottom end of the central limiting tube 131, and the other end of the central return spring 132 is connected with a spring mounting hole I at the upper end of the central valve core 141.
The outer ring injector 2 comprises an outer ring liquid inlet assembly 21, an outer ring magnetic circuit assembly 22 for generating electromagnetic force, an outer ring flow adjusting assembly 23 for adjusting and controlling the action of liquid flow characteristics and atomization characteristics, and an outer ring valve assembly 24 (see figure 3) for generating the action of opening and closing a valve and realizing a sealing function under the action of electromagnetic force, wherein the outer ring liquid inlet assembly 21 is arranged at a liquid inlet of the outer ring magnetic circuit assembly 22, and the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24 are sequentially arranged in the outer ring magnetic circuit assembly 22 from top to bottom; the central injector 1 is arranged in the middle holes of the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24.
The outer ring magnetic circuit assembly 22 comprises an outer ring shell 221, an outer ring electrode 222, an outer ring magnetic conduction sleeve I223, an outer ring magnetic conduction sleeve II 224, an outer ring coil assembly 225 and an outer ring main shaft 226; the middle part of the outer ring main shaft 226 is arranged in the outer ring shell 221, and the upper end of the outer ring main shaft 226 is connected with the outer ring liquid inlet assembly 21; the outer ring main shaft 226 is internally provided with the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24 in sequence; the outer ring coil assembly 225 is sleeved on the outer ring main shaft 226, and the outer ring coil assembly 225 is connected with the outer ring electrode 222 arranged in the electric connector jack of the outer ring shell 221; the outer ring magnetic conduction sleeve I223 is arranged between the outer ring coil assembly 225 and the outer ring shell 221, and the outer ring magnetic conduction sleeve II 224 is embedded between the outer ring magnetic conduction sleeve I223 at the top end part of the outer ring coil assembly 225 and the outer ring main shaft 226.
The outer ring liquid inlet assembly 21 comprises an outer ring filter screen 211, a connecting bent pipe 212 and an outer ring sealing ring 213, wherein the bottom end of the connecting bent pipe 212 is arranged at the upper end of an outer ring main shaft 226, the outer ring filter screen 211 is arranged at a liquid inlet at the top end of the connecting bent pipe 212, and the outer ring sealing ring 213 is sleeved on the outer circle at the top end of the connecting bent pipe 212.
The outer ring valve assembly 24 is a liquid valve assembly 241, the liquid valve assembly 241 comprises a liquid valve core 2411, a liquid valve seat 2412, a liquid sealing insert 2413 and a liquid deflector 2414, the liquid valve core 2411 is installed in a stepped hole at the lower end of the outer ring main shaft 226, and a spring installation hole II is arranged at the top end of the liquid valve core 2411; the bottom end of the liquid spool 2411 is mounted with a liquid seal insert 2413; the liquid valve seat 2412 is installed at the bottom end of the outer ring main shaft 226, the small end of the liquid valve seat 2412 is located in the liquid valve core 2411, the top end face of the large end of the liquid valve seat 2412 is in sealing fit with the liquid sealing insert 2413, the large end of the liquid valve seat 2412 is sequentially provided with a liquid flow-through groove 24121, a liquid flow-through hole 24122, a liquid turbulence chamber 24123 and a guide vane mounting hole I from top to bottom, and the liquid flow-through hole 24122 communicates the liquid flow-through groove 24121 with the liquid turbulence chamber 24123; the liquid deflector 2414 is installed in the deflector installation hole I, and a straight injection hole 24141 is arranged on the liquid deflector 2414, and the straight injection hole 24141 is communicated with the liquid turbulence chamber 24123; the center injector 1 is mounted in a central bore of a liquid valve core 2411 and a liquid valve seat 2412.
The outer ring flow adjusting assembly 23 comprises an outer ring limiting pipe 231 and an outer ring return spring 232, wherein the outer ring limiting pipe 231 is fixedly arranged in the middle of an inner hole of the outer ring main shaft 226, one end of the outer ring return spring 232 is connected with the end part of the bottom end of the outer ring limiting pipe 231, and the other end of the outer ring return spring 232 is connected with a spring mounting hole II at the top end of the liquid valve core 2411.
The bottom end of the central valve seat 142 and the central guide vane 144 of the central injector 1 form a central injector nozzle, the bottom end of the liquid valve seat 2412 and the liquid guide vane 2414 of the outer ring injector 2 form an outer ring injector nozzle, and the two nozzles form a double liquid injection nozzle, and each nozzle injection area is shown in fig. 4.
The bottom end of the central magnetic conduction sleeve I123 of the central injector 1 is connected with the outer ring main shaft 226 of the outer ring injector 2 in a sealing manner through welding; the outer circle of the bottom end of the central magnetism isolating sleeve 125 of the central injector 1 is connected with the inner wall of the liquid valve seat 2412 of the outer ring injector 2 through welding and sealing.
Example two
Disclosed in fig. 5 is another nested dual-jet injector having a configuration substantially identical to that of the first embodiment, except that: the outer ring valve assembly 24 is a gas valve assembly 242; the outer ring injector 2 adopts gas injection, namely liquid fuel injection is adopted as a main part, and gas injection is adopted as an auxiliary part.
The specific structure of the second nested double-jet injector of the embodiment is as follows:
the central injector 1 adopts a conventional electromagnetic valve type injector structure and comprises a central liquid inlet component 11, a central magnetic circuit component 12 for generating electromagnetic force, a central flow adjusting component 13 for adjusting and controlling the liquid flow characteristic and atomization characteristic, and a central valve component 14 (see figure 2) for generating valve opening and closing actions and realizing sealing function under the electromagnetic force, wherein the central liquid inlet component 11 is arranged at a liquid inlet of the central magnetic circuit component 12, and the central flow adjusting component 13 and the central valve component 14 are sequentially arranged in the central magnetic circuit component 12 from top to bottom.
The central magnetic circuit assembly 12 comprises a central shell 121, a central electrode 122, a central magnetic conduction sleeve I123, a central coil assembly 124, a central magnetism isolating sleeve 125, a central magnetic conduction sleeve II 126 and a central main shaft 127; the central spindle 127 is arranged in the central shell 121, the upper end of the central spindle 127 is connected with the central liquid inlet component 11, the lower end of the central spindle 127 is fixedly connected with the central magnetism isolating sleeve 125, the central flow adjusting component 13 is arranged in the central spindle 127, and the bottom end of the central spindle 127 is provided with the central valve component 14; the central coil assembly 124 is sleeved on the lower outer circle of the central spindle 127 and the upper outer circle of the central magnetism isolating sleeve 125, and the central coil assembly 124 is connected with the central electrode 122 positioned in the electric connector jack of the central housing 121; the central magnetic conduction sleeve I123 is sleeved outside the central magnetic isolation sleeve 125, the upper end of the central magnetic conduction sleeve I123 is located in the central housing 121, the central coil assembly 124 is installed between the central magnetic conduction sleeve I123 and the central magnetic isolation sleeve 125, and the central magnetic conduction sleeve II 126 is inlaid between the central spindle 127 at the top end of the central coil assembly 124 and the central magnetic conduction sleeve I123.
The central liquid inlet assembly 11 comprises a central filter screen 111, a central connecting pipe 112 and a central sealing ring 113, wherein the central connecting pipe 112 is arranged at a liquid inlet of the central housing 121, the bottom end of the central connecting pipe 112 is connected with the top end of the central main shaft 127, the central filter screen 111 is arranged in the central connecting pipe 112, and the central sealing ring 113 is sleeved on the outer circle of the top end of the central connecting pipe 112.
The central valve assembly 14 comprises a central valve core 141, a central valve seat 142, a steel ball 143 and a central guide vane 144, wherein the central valve core 141 is installed in a central magnetism isolating sleeve 125, the top end of the central valve core 141 is positioned at the bottom of a central spindle 127, a spring installation hole I is formed in the upper end of the central valve core 141, the bottom end of the central valve core 141 is fixedly connected with the steel ball 143, the central valve seat 142 is installed at the bottom end of the central magnetism isolating sleeve 125, the steel ball 143 is in sealing fit with a valve hole of the central valve seat 142, the central guide vane 144 is installed in a multi-step hole at the bottom end of the central valve seat 142, and a central injection hole 1441 is formed in the central guide vane 144.
The central flow adjusting assembly 13 comprises a central limiting tube 131 and a central return spring 132, wherein the central limiting tube 131 is arranged in the central spindle 127, one end of the central return spring 132 is connected with the bottom end of the central limiting tube 131, and the other end of the central return spring 132 is connected with a spring mounting hole I at the upper end of the central valve core 141.
The outer ring injector 2 adopts gas injection and comprises an outer ring liquid inlet assembly 21, an outer ring magnetic circuit assembly 22 for generating electromagnetic force, an outer ring flow adjusting assembly 23 for adjusting and controlling the liquid flow characteristic and atomization characteristic action, and an outer ring valve assembly 24 (see figure 6) for generating valve opening and closing actions and realizing sealing function under the electromagnetic force action, wherein the outer ring liquid inlet assembly 21 is arranged at a liquid inlet of the outer ring magnetic circuit assembly 22, and the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24 are sequentially arranged in the outer ring magnetic circuit assembly 22 from top to bottom; the central injector 1 is arranged in the middle holes of the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24.
The outer ring magnetic circuit assembly 22 comprises an outer ring shell 221, an outer ring electrode 222, an outer ring magnetic conduction sleeve I223, an outer ring magnetic conduction sleeve II 224, an outer ring coil assembly 225 and an outer ring main shaft 226; the middle part of the outer ring main shaft 226 is arranged in the outer ring shell 221, and the upper end of the outer ring main shaft 226 is connected with the outer ring liquid inlet assembly 21; the outer ring main shaft 226 is internally provided with the outer ring flow adjusting assembly 23 and the outer ring valve assembly 24 in sequence; the outer ring coil assembly 225 is sleeved on the outer ring main shaft 226, and the outer ring coil assembly 225 is connected with the outer ring electrode 222 arranged in the electric connector jack of the outer ring shell 221; the outer ring magnetic conduction sleeve I223 is arranged between the outer ring coil assembly 225 and the outer ring shell 221, and the outer ring magnetic conduction sleeve II 224 is embedded between the outer ring magnetic conduction sleeve I223 at the top end part of the outer ring coil assembly 225 and the outer ring main shaft 226.
The outer ring liquid inlet assembly 21 comprises an outer ring filter screen 211, a connecting bent pipe 212 and an outer ring sealing ring 213, wherein the bottom end of the connecting bent pipe 212 is arranged at the upper end of an outer ring main shaft 226, the outer ring filter screen 211 is arranged at a liquid inlet at the top end of the connecting bent pipe 212, and the outer ring sealing ring 213 is sleeved on the outer circle at the top end of the connecting bent pipe 212.
The outer ring valve assembly 24 is a gas valve assembly 242, the gas valve assembly 242 comprises a gas valve core 2421, a gas valve seat 2422, a gas sealing insert 2423 and a gas deflector 2424, the gas valve core 2421 is installed in a stepped hole at the lower end of the outer ring main shaft 226, and a spring installation hole II is formed at the top end of the gas valve core 2421; the bottom end of the gas valve core 2421 is provided with the gas sealing insert 2423; the gas valve seat 2422 is installed at the bottom end of the outer ring main shaft 226, the small end of the gas valve seat 2422 is located in the gas valve core 2421, the top end face of the large end of the gas valve seat 2422 is in sealing fit with the gas sealing insert 2423, the large end of the gas valve seat 2422 is sequentially provided with a gas flow passing groove 24221, a gas flow passing hole 24222, a gas turbulence cavity 24223 and a guide vane mounting hole II from top to bottom, the gas flow passing hole 24222 communicates the gas flow passing groove 24221 with the gas turbulence cavity 24223, and an inward inclined plane is arranged at the inner side of the gas turbulence cavity 24223; the gas deflector 2424 is installed in the deflector installation hole II, the middle hole of the gas deflector 2424 is a back taper hole, and a gas injection hole which is obliquely sprayed towards the center is formed between the wall of the back taper hole and the inclined plane of the gas turbulence cavity; the center injector 1 is mounted in a central bore of a gas valve element 2421 and a gas valve seat 2422.
The outer ring flow adjusting assembly 23 comprises an outer ring limiting pipe 231 and an outer ring return spring 232, wherein the outer ring limiting pipe 231 is fixedly arranged in the middle of an inner hole of the outer ring main shaft 226, one end of the outer ring return spring 232 is connected with the end part of the bottom end of the outer ring limiting pipe 231, and the other end of the outer ring return spring 232 is connected with a spring mounting hole II at the top end of the gas valve core 2421.
The bottom end of the central valve seat 142 and the central guide vane 144 of the central injector 1 form a central injector nozzle, the bottom end of the gas valve seat 2422 and the gas guide vane 2424 of the outer ring injector 2 form outer ring injector nozzles, the two nozzles form liquid and gas injection nozzles, and the injection areas of the nozzles are shown in fig. 7.
The bottom end of the central magnetic conduction sleeve I123 of the central injector 1 is connected with the outer ring main shaft 226 of the outer ring injector 2 in a sealing manner through welding; the outer circle of the bottom end of the central magnetism isolating sleeve 125 of the central injector 1 is connected with the inner wall of the gas valve seat 2422 of the outer ring injector 2 through welding and sealing.
The working principle of the nested double-jet injector of the utility model is as follows:
1. the working principle of the central injector:
the central electrode 122 inputs a control signal to the central injector, electric energy is converted into magnetic energy, magnetic force overcomes the pressure of medium in the inner cavity of the injector, damping effect and elasticity of the central return spring 132 to attract the central valve core 141, and the central valve core 141 drives the steel ball 143 to move, so that the valve is opened. With the valve open, the medium flows under input pressure from the central screen 111 into the central connection tube 112 and through the lumen to the central baffle 144 for ejection from the central orifice. When the input of signals to the injector is stopped, the magnetic force is reduced, and the central return spring 132 overcomes the damping effect and pushes the central valve core 141 and the steel ball 143 by the magnetic force to close and seal the valve.
2. The working principle of the outer ring injector:
the outer ring electrode 222 inputs a control signal to the outer ring injector, the electric energy is converted into magnetic energy, the magnetic force overcomes the pressure of medium in the inner cavity of the injector, the damping effect and the elasticity of the outer ring return spring 232 to attract the liquid valve core 2411 or the gas valve core 2421, and the liquid valve core 2411 or the gas valve core 2421 drives the liquid sealing insert 2413 or the gas sealing insert 2423 to move, so that the valve is opened. When the valve is opened, the medium flows from the outer ring filter 211 into the connecting elbow 212 under the action of the input pressure, and reaches the liquid deflector 2414 through the inner cavity to be ejected from the straight jet hole or the inclined jet hole. When the input signal to the injector is stopped, the magnetic force decreases and the outer ring return spring 232 pushes the liquid valve element 2411 or the gas valve element 2421, the liquid seal insert 2413 or the gas seal insert 2423 against the damping effect, magnetically, causing the valve to close and seal.
Claims (10)
1. A nested dual spray injector, characterized by: the device comprises a central injector (1) and an outer ring injector (2), wherein the central injector (1) is nested in a middle hole of the outer ring injector (2), and the central injector (1) and the outer ring injector (2) are fixedly connected together in a sealing way.
2. The nested dual-jet injector of claim 1, wherein: the central injector (1) adopts liquid fuel injection, and the outer ring injector (2) adopts liquid fuel injection or gas injection.
3. The nested dual-jet injector of claim 2, wherein: the outer ring injector (2) comprises an outer ring liquid inlet assembly (21), an outer ring magnetic circuit assembly (22) for generating electromagnetic force, an outer ring flow adjusting assembly (23) for adjusting and controlling liquid flow characteristics and atomization characteristics, and an outer ring valve assembly (24) for generating a switching valve action under the action of the electromagnetic force, wherein the outer ring liquid inlet assembly (21) is arranged at a liquid inlet of the outer ring magnetic circuit assembly (22), and the outer ring flow adjusting assembly (23) and the outer ring valve assembly (24) are sequentially arranged in the outer ring magnetic circuit assembly (22) from top to bottom; the central injector (1) is arranged in the middle holes of the outer ring flow adjusting component (23) and the outer ring valve component (24).
4. A nested dual-jet injector as set forth in claim 3 wherein: the outer ring magnetic circuit assembly (22) comprises an outer ring shell (221), an outer ring electrode (222), an outer ring magnetic conduction sleeve I (223), an outer ring magnetic conduction sleeve II (224), an outer ring coil assembly (225) and an outer ring main shaft (226); the middle part of the outer ring main shaft (226) is arranged in the outer ring shell (221), and the upper end of the outer ring main shaft (226) is connected with the outer ring liquid inlet component (21); the outer ring main shaft (226) is internally provided with the outer ring flow adjusting component (23) and the outer ring valve component (24) in sequence; the outer ring coil assembly (225) is sleeved on the outer ring main shaft (226), and the outer ring coil assembly (225) is connected with an outer ring electrode (222) arranged in an electric connector jack of the outer ring shell (221); the outer ring magnetic conduction sleeve I (223) is arranged between the outer ring coil assembly (225) and the outer ring shell (221), and the outer ring magnetic conduction sleeve II (224) is inlaid between the outer ring magnetic conduction sleeve I (223) and the outer ring main shaft (226) at the top end part of the outer ring coil assembly (225).
5. The nested dual-jet injector of claim 4, wherein: the outer ring valve assembly (24) is a liquid valve assembly (241), the liquid valve assembly (241) comprises a liquid valve core (2411), a liquid valve seat (2412), a liquid sealing insert (2413) and a liquid deflector (2414), the liquid valve core (2411) is arranged in a lower end stepped hole of the outer ring main shaft (226), and the liquid sealing insert (2413) is arranged at the bottom end part of the liquid valve core (2411); the liquid valve seat (2412) is arranged at the bottom end of the outer ring main shaft (226), the small end of the liquid valve seat (2412) is positioned in the liquid valve core (2411), the top end face of the large end of the liquid valve seat (2412) is in sealing fit with the liquid sealing insert (2413), the large end of the liquid valve seat (2412) is sequentially provided with a liquid overflow groove (24121), a liquid overflow hole (24122), a liquid turbulence cavity (24123) and a deflector mounting hole I from top to bottom, and the liquid overflow hole (24122) communicates the liquid overflow groove (24121) with the liquid turbulence cavity (24123); the liquid guide plate (2414) is arranged in the guide plate mounting hole I, the liquid guide plate (2414) is provided with a straight injection hole (24141), and the straight injection hole (24141) is communicated with the liquid turbulence cavity (24123); the central injector (1) is arranged in a middle hole of the liquid valve core (2411) and the liquid valve seat (2412).
6. The nested dual-jet injector of claim 4, wherein: the outer ring valve assembly (24) is a gas valve assembly (242), the gas valve assembly (242) comprises a gas valve core (2421), a gas valve seat (2422), a gas sealing insert (2423) and a gas deflector (2424), the gas valve core (2421) is arranged in a lower end step hole of the outer ring main shaft (226), and the gas sealing insert (2423) is arranged at the bottom end part of the gas valve core (2421); the gas valve seat (2422) is arranged at the bottom end of the outer ring main shaft (226), the small end of the gas valve seat (2422) is positioned in the gas valve core (2421), the top end face of the large end of the gas valve seat (2422) is in sealing fit with the gas sealing insert (2423), the large end of the gas valve seat (2422) is sequentially provided with a gas flow through groove (24221), a gas flow through hole (24222), a gas turbulence cavity (24223) and a deflector mounting hole II from top to bottom, the gas flow through hole (24222) communicates the gas flow through groove (24221) with the gas turbulence cavity (24223), and the inner side of the gas turbulence cavity (24223) is provided with an inward inclined plane; the gas deflector (2424) is arranged in the deflector mounting hole II, the middle hole of the gas deflector (2424) is a back taper hole, and a gas jet hole which is obliquely sprayed towards the center is formed between the wall of the back taper hole and the inclined plane of the gas turbulence cavity; the central injector (1) is arranged in the middle holes of the gas valve core (2421) and the gas valve seat (2422).
7. The nested dual-jet injector of claim 5 or 6, wherein: the outer ring flow adjusting assembly (23) comprises an outer ring limiting pipe (231) and an outer ring return spring (232), the outer ring limiting pipe (231) is fixedly arranged in the middle of an inner hole of the outer ring main shaft (226), one end of the outer ring return spring (232) is connected with the bottom end part of the outer ring limiting pipe (231), and the other end of the outer ring return spring (232) is connected with the top end part of the liquid valve core (2411) or the gas valve core (2421); the outer ring liquid inlet assembly (21) comprises an outer ring filter screen (211) and a connecting bent pipe (212), wherein the bottom end of the connecting bent pipe (212) is arranged at the upper end of an outer ring main shaft (226), and the outer ring filter screen (211) is arranged at a liquid inlet at the top end of the connecting bent pipe (212).
8. The nested dual-jet injector of claim 1, wherein: the central injector (1) comprises a central liquid inlet component (11), a central magnetic circuit component (12) for generating electromagnetic force, a central flow adjusting component (13) for adjusting and controlling liquid flow characteristics and atomization characteristics, and a central valve component (14) for generating a switching valve action under the action of the electromagnetic force, wherein the central liquid inlet component (11) is arranged at a liquid inlet of the central magnetic circuit component (12), and the central flow adjusting component (13) and the central valve component (14) are sequentially arranged in the central magnetic circuit component (12) from top to bottom.
9. The nested dual-jet injector of claim 8, wherein: the central magnetic circuit assembly (12) comprises a central shell (121), a central electrode (122), a central magnetic conduction sleeve I (123), a central coil assembly (124), a central magnetism isolating sleeve (125), a central magnetic conduction sleeve II (126) and a central main shaft (127); the central spindle (127) is arranged in the central shell (121), the upper end of the central spindle (127) is connected with the central liquid inlet component (11), the lower end of the central spindle (127) is fixedly connected with the central magnetism isolating sleeve (125), the central flow adjusting component (13) is arranged in the central spindle (127), and the central valve component (14) is arranged at the bottom end of the central spindle (127); the central coil assembly (124) is sleeved on the outer circle of the lower end of the central spindle (127) and the outer circle of the upper end of the central magnetism isolating sleeve (125), and the central coil assembly (124) is connected with the central electrode (122) in the electric connector jack of the central shell (121); the magnetic shielding device is characterized in that the central magnetic shielding sleeve I (123) is sleeved outside the central magnetic shielding sleeve (125), the upper end of the central magnetic shielding sleeve I (123) is located in the central housing (121), the central coil assembly (124) is installed between the central magnetic shielding sleeve I (123) and the central magnetic shielding sleeve (125), and the central magnetic shielding sleeve II (126) is inlaid between a central spindle (127) at the top end of the central coil assembly (124) and the central magnetic shielding sleeve I (123).
10. The nested dual-jet injector of claim 9, wherein: the central valve assembly (14) comprises a central valve core (141), a central valve seat (142), a steel ball (143) and a central guide vane (144), wherein the central valve core (141) is arranged in a central magnetism isolating sleeve (125), the top end of the central valve core (141) is positioned at the bottom of a central main shaft (127), the bottom end of the central valve core (141) is fixedly connected with the steel ball (143), the central valve seat (142) is arranged at the bottom end of the central magnetism isolating sleeve (125), the steel ball (143) is in sealing fit with a valve hole of the central valve seat (142), the central guide vane (144) is arranged in a multi-step hole at the bottom end of the central valve seat (142), and a central injection hole (1441) is arranged on the central guide vane (144);
the central flow adjusting assembly (13) comprises a central limiting pipe (131) and a central return spring (132), the central limiting pipe (131) is arranged in the central spindle (127), one end of the central return spring (132) is connected with the bottom end part of the central limiting pipe (131), and the other end of the central return spring (132) is connected with the top end part of the central valve core (141);
the central liquid inlet assembly (11) comprises a central filter screen (111) and a central connecting pipe (112), wherein the central connecting pipe (112) is arranged at a liquid inlet of the central shell (121), the bottom end of the central connecting pipe (112) is connected with the top end of a central main shaft (127), and the central filter screen (111) is arranged in the central connecting pipe (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223594407.0U CN219327584U (en) | 2022-12-29 | 2022-12-29 | Nested double-jet injector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223594407.0U CN219327584U (en) | 2022-12-29 | 2022-12-29 | Nested double-jet injector |
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| Publication Number | Publication Date |
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| CN219327584U true CN219327584U (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223594407.0U Active CN219327584U (en) | 2022-12-29 | 2022-12-29 | Nested double-jet injector |
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| Country | Link |
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| CN (1) | CN219327584U (en) |
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