14results about How to "Improve ejection ability" patented technology

The invention provides an experiment control device for researching an ejection system. The experiment control device comprises a high-pressure power source pipeline, a multi-stage ejector pipeline and a control and data acquisition system, the high-pressure power source pipeline is used for providing high-pressure gas for the multi-stage ejector pipeline, so that each stage of ejector in the multi-stage ejector pipeline can work normally; the multi-stage ejector pipeline comprises a first-stage ejector pipeline to an nth-stage ejector pipeline, and all the stages of ejector pipelines are sequentially connected in a cascade form; and the control and data acquisition system is used for controlling the multi-stage ejector pipeline and acquiring data. According to the experimental control device for studying the injection system, the performance of various ejector systems can be studied, so that the ejector systems meet the design target and adapt to various variable working conditions, and the injection performance is improved.

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 provides a straight inserting valve and a gas stove including the same, the straight inserting valve comprises a valve body and a valve core, the valve body comprises an outer ring gas channel and an inner ring gas channel, the valve core is rotatably arranged in the valve body, the outer circumferential wall of the valve core is provided with an outer ring vent hole group and an inner ring vent hole group, and the outer ring vent hole group and the inner ring vent hole group are communicated with each other. The outer ring vent hole set comprises an annular gradually-shrinking groove formed in the circumferential direction of the valve element, the groove extending direction of the annular gradually-shrinking groove is consistent with the circumferential direction of the valve element, and the groove width of the annular gradually-shrinking groove is gradually reduced in the groove extending direction of the annular gradually-shrinking groove. The outer ring strip-shaped groove is formed in the circumferential direction of the valve element, a round hole penetrating into the valve element inwards is formed in the groove bottom of the outer ring strip-shaped groove, and the outer ring strip-shaped groove and the annular reducing groove are formed in parallel in the axis direction of the valve element. According to the structural arrangement scheme, the probability of accidental flameout or detonation caused by insufficient airflow in the fire adjusting process of a user can be smaller.

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.

The utility model discloses a firepower enhancement type upper air inlet burner which comprises a base and a support arranged on the base, a first air inlet nozzle and a second air inlet nozzle are arranged on the base, and a first injection pipe corresponding to the first air inlet nozzle and a second injection pipe corresponding to the second air inlet nozzle are arranged on the support. The first injection pipe and the second injection pipe each comprise a horn mouth section, a transition section and an inner diameter expanding bent pipe section, each transition section comprises a straight barrel section and an inner diameter expanding conical pipe section, and reinforcing ribs are arranged along the junctions of the outer walls of the first injection pipe and the second injection pipe and the support. Through the arrangement of the horn mouth section, the transition section and the inner diameter expanding bent pipe section, the primary air injection capacity and the mixing capacity are improved, and the combustion performance of the combustor is met. By means of the arrangement of the reinforcing ribs, the strength of the first injection pipe and the strength of the second injection pipe are enhanced, the deformation of the first injection pipe and the deformation of the second injection pipe are reduced, the combustion effect of the combustor is improved, and meanwhile the service life of the combustor is prolonged.

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.

The utility model provides an upper air inlet burner which comprises an outer ring injection pipe and a flow guide wall structure, and the flow guide wall structure is arranged on the side of an air inlet of the outer ring injection pipe and located on the side, away from the axis of the upper air inlet burner, of the outer ring injection pipe. And an included angle formed by the flow guide surface of the flow guide wall structure and the pipeline extension direction of the outer ring injection pipe is greater than or equal to 90 degrees. When the airflow direction near the pipe orifice of the outer ring injection pipe is opposite to the injection direction, the flow guide wall structure guides the airflow to deviate from the pipe orifice of the outer ring injection pipe, the situation that the amount of air injected into the outer ring injection pipe is too small is avoided, and the adverse effect of the airflow on the outer ring injection pipe is reduced; when the airflow direction is the same as the injection direction, the airflow is guided and gathered to the pipe opening of the outer ring injection pipe through the flow guide wall structure, the amount of air injected into the outer ring injection pipe is increased, the injection effect of the outer ring injection pipe is enhanced, and through the guiding effect of the flow guide wall structure on the airflow, insufficient combustion of fuel gas is avoided, and the energy efficiency of the upper air inlet combustor is improved.

The utility model discloses an improved upper air inlet burner which comprises a base and a support arranged on the base, a primary air inlet space is formed between the base and the support, and a first air inlet nozzle and a second air inlet nozzle are arranged on the base. A first injection pipe corresponding to the first air inlet nozzle and a second injection pipe corresponding to the second air inlet nozzle are arranged on the support, and the first injection pipe comprises a first injection pipe downward-concave part integrally formed on the support and a first injection pipe cover matched with the first injection pipe downward-concave part. The second injection pipe comprises a second injection pipe downward-concave part integrally formed on the support and a second injection pipe cover matched with the second injection pipe downward-concave part, and the inner-layer annular groove is arranged in a slope mode, wherein the end, close to the center injection pipe, of the inner-layer annular groove is low, and the end, away from the center injection pipe, of the inner-layer annular groove is high. Due to the fact that the first injection pipe cover and the second injection pipe cover are detachably arranged, the combustor is simple in structure and convenient to manufacture and assemble. Through the arrangement of the slope, the injection performance of the inner-layer annular groove of the combustor and the heat efficiency of the whole machine are improved.

The present invention discloses an ejection refrigeration system and a refrigeration device, wherein the ejection refrigeration system comprises a compressor, a condenser, an ejector, a first throttling device, a second throttling device, a first evaporator, a second evaporator, a gas-liquid separator and a circuit switching unit. The condenser is connected to the inlet of the ejector, the outlet of the ejector is connected to the inlet of the gas-liquid separator, and the gas phase outlet of the gas-liquid separator is connected to the inlet of the compressor; the liquid phase outlet of the gas-liquid separator is connected in series with the first throttling device, the first evaporator and the ejection inlet of the ejector to form a first ejection circuit; the liquid phase outlet is connected in series with the second throttling device, the second evaporator and the ejection inlet to form a second ejection circuit. The present invention can avoid the limitation on the size requirement of the ejector nozzle caused by the small flow rate entering the ejection inlet in the prior art, thereby conveniently realizing the processing of the nozzle and reducing the production and manufacturing cost of the ejector.

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.

The present invention relates to a gas burner with strong ejection force, characterized in that it comprises an annular outer ring gas mixing chamber, which is divided into at least two gas mixing sub-chambers along the circumferential direction, and each gas mixing sub-chamber is respectively connected to an outer ring ejection tube; and also relates to a gas stove. In the present invention, the outer ring gas mixing chamber is divided into at least two gas mixing sub-chambers along the circumferential direction, and each gas mixing sub-chamber is respectively connected to an outer ring ejection tube, that is, each gas mixing sub-chamber ejects airflow through an independent outer ring ejection tube, thereby enhancing the ejection capacity of the outer ring in the gas burner. In the gas stove of the present invention, the burner is positioned on the liquid receiving tray by inserting the gas connector into the mounting hole, and is supported on the liquid receiving tray by supporting feet. In addition, the ignition needle and the thermocouple are penetrated on the burner, so that the burner can be removed from the liquid receiving tray as a whole, and at this time, only the ignition needle and the thermocouple are left on the liquid receiving tray, which is convenient for cleaning.