15results about How to "Reduce exhaust temperature" patented technology

The utility model provides a jet synergy type enhanced vapor injection high-efficiency heat pump, the system is composed of a conventional heat pump module, an enhanced vapor injection module and a jet module, the enhanced vapor injection module comprises a flash tank and a jet electronic expansion valve, and the jet module comprises a jet, an electromagnetic valve and other parts. Refrigerant flashed from the flash tank enters the ejector through the ejection electronic expansion valve and is ejected to a middle pressure cavity of the compressor through the ejector, and the enhanced vapor injection effect is generated. Besides, in order to improve the ejection effect of the ejector and control the working temperature of the compressor, an ejection coil pipe is designed in the gas-liquid separator, high-temperature and high-pressure refrigerants are introduced from the high-pressure side, and heat exchange with return gas refrigerants is achieved in gas separation, so that on one hand, the temperature of the refrigerants in the low-pressure section of a compressor cavity can be increased, and the compressor is prevented from running with liquid; meanwhile, the intermediate cavity temperature and the exhaust temperature of the compressor can be reduced, the whole cavity temperature of the compressor is moderate, and safe and reliable operation of the compressor is guaranteed.

The utility model discloses a double cooling snow making is with sliding vane type air compressor, including mainframe shell, mainframe shell one end installs middle oil cooler, middle oil cooler side surface is connected motor cooling fan, motor cooling fan side surface installs drive motor, drive motor one end is equipped with rear air cooler, middle oil cooler side surface is connected oil gas separator. This double cooling snow making is with sliding vane type air compressor, through installing middle oil cooler in mainframe shell one end, simultaneously in middle oil cooler side surface is connected motor cooling fan, and in motor cooling fan side surface installs drive motor, and the layout is reasonable compact, utilizes motor fan and carries out air cooling, need not for air cooler alone design air duct or installation position, when using, it is more convenient in the snow making site deployment and transportation of limited space, not only reduced manufacturing cost also reduced operating energy consumption, improved the economy and reliability of system.

This utility model discloses a high-efficiency venting structure for die-casting molds, relating to the field of mold technology. It includes: a fixed mold and a moving mold; the fixed mold has a cavity at the top center, and the moving mold has a mold base fixedly installed at the bottom, inserted into the cavity; a venting groove is located at the bottom center of the mold base, and a venting hole penetrating the mold base and the moving mold is located at the top of the venting groove; a venting assembly is located inside the venting groove; and a cooling assembly is fixedly installed at the top of the venting pipe. This utility model achieves automatic venting, preventing molten metal leakage and ensuring venting efficiency. It also extends the flow path of high-temperature gas within the venting stack. Combined with circulating cold water and heat dissipation fins in the water tank, it can quickly absorb gas heat, reduce the venting temperature, prevent direct venting of high-temperature gas from scalding operators, and reduce the impact on the workshop environment temperature.

The embodiment of the utility model provides a kind of water-cooled muffler, relate to silencing device technical field.Water-cooled muffler includes muffler body, inlet pipe, exhaust pipe, inlet pipe and outlet pipe.Water-cooled muffler is provided with sound attenuation chamber and cooling chamber in muffler body.Inlet pipe, exhaust pipe, inlet pipe and outlet pipe are set to the outside of muffler body.Inlet pipe, exhaust pipe and sound attenuation chamber are communicated.Cooling chamber is provided with cooling element.Inlet pipe, outlet pipe are respectively communicated with cooling element.The utility model can cool muffler, reduce exhaust temperature, improve the infrared function of equipment.

This invention relates to the field of multi-split air conditioning system technology, specifically to a disturbance control method for the outer loop electronic expansion valve of an air conditioning system. The problem this invention addresses is how to actively eliminate oil and refrigerant blockage and reduce exhaust temperature during defrosting or oil return processes through forced disturbance control of the outer loop electronic expansion valve. To solve this problem, this invention provides a control method comprising: acquiring the operating status parameters of the air conditioning system; determining whether the air conditioning system has triggered a disturbance program based on the status parameters; correcting the reference setting based on the exhaust temperature, compressor return superheat, and oil separator return oil temperature during the execution of the disturbance mode; determining whether to exit the disturbance program based on the exhaust temperature and the execution duration of the disturbance program during defrosting and oil return modes; and automatically exiting the disturbance program when the air conditioning system exits the defrosting or oil return mode.

The utility model discloses a kind of heating furnace shell structures with high-efficiency heat insulation interlayer, including radiation chamber, the top of the radiation chamber is provided with convection chamber, the top of the convection chamber is provided with flue gas pipe, the inside of the radiation chamber is provided with waste heat insulation component, vacuum heat insulation component is arranged between the radiation chamber and waste heat insulation component, the inside of the waste heat insulation component is provided with burner;The utility model passes through the interoperation between heat insulation lining, flow-through cavity, fan, heat exchange tube, flow guide pipe and exhaust pipe, so that device can extract airflow and exhaust heat exchange when using, reduce exhaust temperature, exhaust waste heat can be effectively utilized simultaneously, hot gas can pass through flow-through cavity after heat exchange, hot gas can form insulation layer outside combustion chamber at this time, to prevent heat loss, improve the heat insulation performance of device.

The application relates to a fresh air dehumidification heat pump system based on a new compressor series-parallel transformation step suction and exhaust, a refrigerant circulation flow path comprising a first air inlet coil, a first throttling device, a supply air coil, a first check valve, a return air coil, an exhaust air coil, a first four-way reversing valve and a first compressor which are sequentially connected; further comprising a second four-way reversing valve, a second compressor, a second air inlet coil and a second throttling device which are sequentially connected; further comprising a second check valve which is connected in parallel to the two ends of the supply air coil and the first check valve; the transformation of the series-parallel relationship of the compressors in the cold / heat mode is realized through the first four-way reversing valve and the second four-way reversing valve, so that the step suction / step exhaust forms correspondingly. Compared with the prior art, the two four-way reversing valves are switched skillfully, the switching of the two compressors in series and parallel is completed in the refrigeration and heating modes, and the switching of the step suction and the step exhaust is further realized, so that the unit performance is improved.

The utility model provides a sectional type big temperature difference water source heat pump unit relates to heat pump unit technical field, including heat pump module, heat pump module includes first stage heat pump unit and second stage heat pump unit, and each stage heat pump module is equipped with cold water inlet and hot water inlet, and cold water inlet and hot water inlet all are connected to external water source pipeline through mechanical valve group, and mechanical valve group contains series connection mode interface and parallel mode interface, and through manual operation switches waterway series connection topology structure. The utility model has realized through the cold water inlet, hot water inlet of each stage heat pump module through mechanical valve group connection, and contains series connection and parallel interface and switches waterway through valve handle operation, and when series connection, low temperature water source flows through multistage evaporator and gradually reduces temperature, and when parallel, high temperature water source shunts to each stage evaporator, adapts small temperature difference demand, reaches the effect of improving application range, increases energy efficiency.

The utility model provides a kind of compressor screw rod and screw rod compressor, air conditioner, wherein compressor screw rod includes stem and the rotor of being located stem, rotor inside is equipped with between its suction end and the liquid supply passage extending of exhaust end, and several through the liquid injection passage of tooth groove surface and liquid supply passage, liquid injection passage includes the liquid outlet section and liquid inlet section of connecting tooth groove surface and liquid supply passage respectively and the variable diameter section of connecting liquid outlet section and liquid inlet section;Compressor screw rod further includes movable stop block, is located in variable diameter section and is connected in liquid injection passage interior by reset piece, movable stop block size is greater than the size of liquid outlet section and variable diameter section junction and liquid inlet section and variable diameter section junction;In the process that tooth groove rotates cyclically with rotor and inhales and exhausts, movable stop block reciprocates between liquid outlet section and liquid inlet section to open and close liquid injection passage under the differential pressure change of liquid outlet section and liquid inlet section and the action of reset piece, realize that the volume between rotor teeth from suction to the end process of internal compression is uninterrupted, and liquid injection is adaptively changed with the differential pressure of two sides.

This invention belongs to the field of refrigerant technology and discloses a mixed refrigerant and its application. The mixed refrigerant is composed of two or three of ethane, propane, propylene, and difluoroethane. When ethane is included, its mass percentage in the mixed refrigerant does not exceed 10%, or is between 21% and 50%. When difluoroethane is included, its mass percentage is between 65% and 85%. This invention, by improving the composition and proportion of each component of the mixed refrigerant, solves the technical problems of high GWP values, low energy efficiency, low volumetric refrigeration capacity, and poor refrigeration performance associated with existing refrigerants. It can be used to replace R32 or R290, has a low exhaust temperature, high volumetric refrigeration capacity, and requires less refrigerant charge, and can be used to replace high GWP refrigerants such as R32 and R410A.

The utility model discloses a refrigeration system and refrigeration equipment, and belongs to the field of refrigeration. The refrigerating system comprises a compressor and a heat exchanger. The heat exchanger comprises a first heat exchange pipe and a second heat exchange pipe, an inlet of the first heat exchange pipe is connected with an exhaust port of the compressor, the second heat exchange pipe comprises a first pipe part and a second pipe part which are located on different side faces of the box body, an outlet of the first pipe part is connected with an inlet of the second pipe part, and an outlet of the second pipe part is connected with an outlet of the compressor. An outlet of the second pipe part is connected with an air suction port of the compressor, at least part of the first pipe part and at least part of the first heat exchange pipe are located on the same side face of the box body, and at least part of the first pipe part is arranged on one side of the first heat exchange pipe so as to exchange heat with the first heat exchange pipe. The temperature of the refrigerant entering the inlet of the compressor can be reduced, so that the exhaust pressure of the refrigeration system in a steady state is reduced, and noise is reduced.

The invention relates to the technical field of heat pump systems, in particular to a whole vehicle heat management method based on an injection type air supply enthalpy increasing heat pump. A traditional air-supplementing enthalpy-increasing heat pump system is complex in structure and cannot carry out effective and controllable heat exchange with various vehicle-mounted functional parts in a whole vehicle heat management system. In order to solve the problem, the invention provides the whole vehicle thermal management method based on the injection type air supply and enthalpy increase heat pump, and a stable air supply and enthalpy increase loop is constructed in a heat pump system. And the medium-pressure gaseous refrigerant in the gas-liquid separator continuously performs enthalpy increasing and gas supplementing on the compressor. Meanwhile, a heat pump system is deeply coupled with a whole vehicle heat management system, the temperature states of vehicle-mounted functional components such as an electric drive module, a battery module and a cabin module can be collected in real time through a central integration module formed by a heat management controller and a temperature sensor, and heat is dynamically distributed according to actual requirements.

The application belongs to the technical field of air supercharging and provides a machine head of a piston type full-oil-free supercharger, which comprises a body and at least one cylinder arranged along the radial direction of the body, the body and the cylinder are arranged as a hollow chamber structure surrounded by a side wall, the cylinder comprises a first cylinder, a second cylinder, a third cylinder, a fourth cylinder, a fifth cylinder and a sixth cylinder, wherein the first cylinder, the second cylinder, the third cylinder and the fourth cylinder, the fifth cylinder and the sixth cylinder are arranged to be uniformly distributed along the radial central axis of the body, and the axes of the first cylinder and the fifth cylinder coincide as a straight line, and the axes of the second cylinder and the sixth cylinder coincide as a straight line. The application adopts a six-cylinder design, has strong power balance, low vibration, large heat dissipation area, high exhaust volume and efficiency, and can easily realize a multi-stage compression structure to provide high supercharged gas.

The application relates to a valve timing system of a V-type two-cylinder four-valve engine. The application comprises cylinder blocks arranged in a V type, cylinder heads arranged on two sides of the cylinder blocks respectively, two intake valves and two exhaust valves arranged on each cylinder head respectively, a combustion chamber of the cylinder head being a pinnacled combustion chamber, an air inlet of the cylinder head being arranged at the front end of the engine, an exhaust port of the cylinder head being arranged at the rear end of the engine, and a space for accommodating a valve timing system being formed in the middle of the engine; the valve timing system comprises a camshaft arranged in the middle of the cylinder block and driven to rotate by a crankshaft, four cams arranged on the camshaft in the axial direction, four tappets, four push rods, one end of each push rod being movably connected with a corresponding tappet, and a rocker arm mechanism comprising two rocker arm seats oppositely arranged on each cylinder head and intake rocker arms and exhaust rocker arms rotatably arranged on each rocker arm seat. Under the premise of meeting various requirements of the vehicle level, high performance, small size and low cost of the engine are realized.

The invention discloses an integrated and high-reliability engine cooling system arrangement structure, and belongs to the technical field of engine cooling systems. The problems that a traditional engine cooling system is extensive in heat management, slow in engine warming, high in energy consumption, poor in operation condition adaptability, high in accessory power consumption and insufficient in cooling reliability of high-heat-load components are solved. Comprising a large cycle, an oil cooler small cycle, a warm air small cycle, a supercharger small cycle, an EGR small cycle, a cylinder body and cylinder cover small cycle and a degassing small cycle. An EGR cooler in the EGR small cycle is arranged above an engine cylinder cover, high-point gas of a cylinder cover water jacket enters the EGR cooler through an EGR cooler water inlet pipe and then enters a whole vehicle expansion kettle through an engine degassing connecting pipe nozzle integrated on an EGR cooler water outlet pipe, and degassing is completed. According to the invention, rapid warming-up, accurate cooling as required and parasitic power consumption reduction can be realized, and the problem of gas management in a complex loop is fundamentally solved, so that the harsh requirements of a next-generation high-performance and low-emission engine are met.