7results about How to "Improve ejection ability" patented technology

The application belongs to the technical field of combustion engines, and provides a large-size side exhaust pipe of a turboshaft engine, which comprises: a pipe body having an inlet end and an outlet end; an outlet reinforcing structure arranged at the outlet end region of the pipe body; a support structure arranged inside the pipe body; an anti-abrasion connecting structure arranged at the inlet end of the pipe body; and an internal flow passage of the pipe body is configured to guide the gas input from the inlet end to be discharged laterally at the outlet end, the internal flow passage of the pipe body has a preset expansion cone angle θ2, the flow passage center line of the pipe body is a three-dimensional space curve constructed based on a non-uniform rational B-spline curve, and the ratio of the outer diameter size of the inlet end to the center transverse distance between the inlet end and the outlet end satisfies a preset condition. The core aerodynamic problem of "complex internal flow field organization of a large-size side exhaust pipe, non-uniform outlet flow field and small effective aerodynamic area" in the prior art is solved, and the limit performance of the exhaust pipe is excavated without affecting the performance of the engine.

The utility model discloses a fire distributor, a burner and a gas stove. The fire distributor comprises a fire distributor body, a fire distribution groove structure and an injection structure, the fire distribution groove structure comprises an inner ring fire distribution groove, a middle ring fire distribution groove and an outer ring fire distribution groove, the middle ring fire distribution groove is annularly formed in the outer side of the inner ring fire distribution groove, the outer ring fire distribution groove is annularly formed in the outer side of the middle ring fire distribution groove, and the injection structure comprises an inner ring injection pipe, a middle ring injection pipe and an outer ring injection pipe. The outer ring injection pipe is communicated with the outer ring fire distribution groove, the middle ring injection pipe is communicated with the middle ring fire distribution groove, the inner ring injection pipe is communicated with the inner ring fire distribution groove, and a first protrusion protruding outwards is arranged on the outer side wall of the middle ring fire distribution groove, so that a first injection cavity communicated with the middle ring injection pipe is formed in the inner side of the first protrusion; and / or a second protrusion part protruding outwards is arranged on the outer side wall of the inner ring fire distribution groove, so that a second injection cavity communicating with the inner ring injection pipe is formed in the inner side of the second protrusion part.

The utility model relates to kitchen appliance technical field, more particularly, relates to a kind of adjustable primary air damper device.Adjustable primary air damper device, including fan assembly, nozzle assembly and the adjusting plate being set between fan assembly and nozzle assembly;Fan assembly has blast port;Adjusting plate is configured as by adjusting the distance with blast port, to adjust the air quantity from blast port into injection pipe;Adjusting plate has adjusting channel, and the adjusting channel includes the horn mouth towards blast port;Adjusting plate is further provided with guide structure, to enable adjusting plate to always face fan assembly.Such can efficiently and quickly realize primary air regulation.

A cover shell is provided with a drainage inner cavity, and a heat outlet communicated with the drainage inner cavity is formed in the top of the cover shell; the seat body is located in the drainage inner cavity of the housing, and a nozzle is arranged on the seat body; the injection pipe is located in the drainage inner cavity of the housing and arranged above the nozzle on the base body, and a combustion opening is formed in the top end of the injection pipe and faces the heat outlet of the housing. The flamethrower is arranged at a combustion port of the injection pipe, an inner cavity of the flamethrower comprises a diffusion section close to the injection pipe and a contraction section away from the injection pipe, and the diffusion section is gradually reduced from the end close to the injection pipe to the other end away from the injection pipe. And the contraction section is gradually expanded from one end close to the diffusion section to the other end far away from the diffusion section. According to the utility model, the gas flow resistance in the injection pipe is minimized, and the injection effect is enhanced.

The utility model discloses a high efficiency's fierce fire staggered floor combustion system of upper air inlet, include: furnace head subassembly, furnace base, blast box, air blower and fierce fire air outlet structure, blast box and air blower set up in the below of range panel, the blast outlet of fierce fire air outlet structure is located the above of range panel, towards the injection port of injection channel, blast box is equipped with the blast connecting port of connecting fierce fire air outlet structure, and air blower can send air through blast box to the blast outlet of fierce fire air outlet structure, the utility model discloses, break through upper air inlet space limit, realize efficient blast, the core innovation is in the ingenious adoption " blast source lower -positioned, air -supply path up -going, air -out point upper -positioned " split type design. Through special fierce fire air outlet structure, air is accurately delivered to the injection channel injection port near the above of range panel, realizes the core function of forced air supply. This design perfectly adapts the structural characteristics of all upper -positioned of upper air inlet burner injection system.

This application provides an ejector device and a solid oxide fuel cell, relating to the field of solid oxide fuel cell technology. The ejector device includes: a primary flow inlet pipe, a secondary flow intake chamber, a mixing pipe, and a diffuser pipe arranged coaxially and sequentially. The secondary flow intake chamber has a volute structure and is fitted around the outside of the tapered nozzle at the outlet end of the primary flow inlet pipe. The secondary flow intake chamber includes: a main body and an inlet pipe section, the inlet pipe section being connected to the main body, and the junction of the two forming a volute tongue. A flow divider is provided within the secondary flow intake chamber, extending from the inlet pipe section to the main body. The extended contour line of the flow divider and the volute profile of the secondary flow intake chamber and its corresponding portion are aligned. The two outlets of the two spiral flow channels formed by the flow divider have complementary circumferential coverage within the main body.

The distributor comprises a distributor body, a central cavity with an upper opening and a lower opening and a first air cavity with an upward opening, the central cavity is arranged at the central position of the distributor body, and the first air cavity is arranged on the periphery of the central cavity and provided with a first end and a second end which are oppositely arranged; and the first injection pipe is transversely arranged at the bottom of the distributor body, the air inlet end of the first injection pipe is located at the bottom of the first end of the first air cavity, and the air outlet end of the first injection pipe stretches across the bottom of the center cavity and is communicated with the second end of the first air cavity. According to the distributor, the primary air coefficient and the secondary air coefficient can be increased, combustion is more sufficient, the heat efficiency is higher, and CO emission is lower. The utility model further provides an upper air inlet inner flame burner.