10 results about "Cold air intake" patented technology

The invention relates to a heat dissipation air duct of a liquid cooling radiator of a piston engine, which not only meets the low resistance requirement of the aerodynamic configuration of an aircraft, but also meets the heat dissipation power requirement of the engine. Comprising an external fairing and an internal heat dissipation air channel, the external fairing is matched with the appearance of a machine body and completely wraps the internal heat dissipation air channel, the internal heat dissipation air channel is divided into a front cold air inlet area, a middle radiator area and a rear hot air flow guide area, and the front cold air inlet area is connected with the external fairing; a radiator is fixed in the middle radiator area, the rear hot air flow guide area and the outer fairing are of an integrated structure, an air guiding opening is formed in the front portion of the outer fairing, an engine air inlet is formed in the left side of the middle of the outer fairing, and an engine exhaust opening is formed in the right side of the middle of the outer The heat dissipation air channel is provided with the independent internal heat dissipation air channel and the external fairing, so that the heat dissipation efficiency can be ensured, and the external pneumatic appearance can be ensured to be smooth.

The invention relates to the technical field of wall-hanging stoves, and discloses an ignition control method and device of a wall-hanging stove, a controller and the wall-hanging stove.The ignition control method comprises the steps that when ignition of the wall-hanging stove fails, the valve opening current of a gas proportional valve of the wall-hanging stove is detected, and when the valve opening current is smaller than a preset current threshold value, the valve opening current is increased, and the wall-hanging stove is controlled to execute ignition operation again; when the valve opening current is larger than or equal to the preset current threshold value, the fan rotating speed of the wall-hanging stove is detected; and when the rotating speed of the fan is larger than the preset rotating speed threshold value, the rotating speed of the fan is adjusted to the preset rotating speed threshold value, and the wall-hanging stove is controlled to execute re-ignition operation. According to the method, the valve opening current is firstly adjusted when the execution of the ignition operation fails, so that the ignition success rate of the wall-hanging stove is increased by increasing the air inlet pressure, and the rotating speed of the fan is adjusted when the valve opening current is greater than the preset current threshold value, so that the ignition failure caused by flame separation and fire transfer failure is avoided by reducing the air inlet amount of cold air; the ignition success rate of the wall-hanging stove is improved.

The present application relates to a device for simulating and measuring the inlet flow field of a three-duct afterburner test inlet of an aircraft engine. In specific applications, the outer casing, inner casing, inner cone, and rear end of the three-duct air intake casing can be connected to the afterburner test piece, and inner air can be introduced into the inner duct of the afterburner through the inner air intake duct, and outer air can be introduced into the afterburner through the outer air intake duct, thereby simulating the inlet flow field of the afterburner. The temperature, pressure and other measuring points arranged on the outer air intake flow field measurement support rod and the inner air intake flow field measurement support rod can be used to measure the temperature and pressure of the inner air intake duct and the outer air intake duct. In addition, cold air can be introduced into the inner cone interlayer through the outer cold air intake duct through the annular diversion cavity and the inner cold air intake duct. The cold air can be discharged from the air film holes on the inner cone, and can cool the inner casing, the inner air intake duct support plate, and the inner cone along the way.

The utility model relates to the field of semiconductor packaging equipment, and discloses an integrated ZR module, which comprises a base, a linear motion assembly is arranged on the base, a rotary mounting seat is arranged on the linear motion assembly, a rotary motor and a rotary shaft connected with the rotary motor are arranged in the rotary mounting seat, a heating head is connected onto the rotary shaft, and the heating head is connected with the linear motion assembly. A cold air inlet is formed in the rotating mounting seat, an annular cold air channel is arranged between the rotating shaft and the rotating mounting seat, a cold air outlet is formed in the rotating shaft, and a cold air outlet is reserved between the rotating shaft and the heating head; the cold air inlet, the annular cold air channel, the cold air outlet and the cold air outlet are sequentially communicated. The surface of the heating head can be cooled, the temperature of the heating head can be conveniently controlled, and the service life of the heating head is prolonged.

In a cooling cabinet equipped with a cooling chamber that allows for the loading and unloading of carts carrying objects to be cooled, and a differential pressure unit that creates a differential pressure within the cooling chamber, the risk of cleaning water directly contacting the inner surface of the differential pressure unit is eliminated, thereby improving the efficiency of cleaning the cooling chamber. [Solution] The differential pressure unit 6 comprises a hollow differential pressure duct 15 having a cold air intake port 17 and an outlet port 18, a differential pressure fan 16 that forms an airflow from the intake port 17 to the outlet port 18 within the differential pressure duct 15, and a wind direction guide 21 provided on the outer surface side of the intake port 17 of the differential pressure duct 15. This wind direction guide 21 is configured to be displaceable between an open position facing the side of a cart 30 placed in front of the intake port 17 and a closed position that blocks the intake port 17.

The utility model relates to the field of electric control boards, in particular to an electric control board testing tool which comprises a control platform used for installing a control board, a power supply platform used for installing a power supply board, a function display platform, a temperature control module and a fixed base. The control platform used for installing the control panel, the power platform used for installing the power panel, the function display platform and the temperature control module are fixedly arranged on the fixed base, the temperature control module comprises a heating platform and a cooling function platform, and temperature control needle containing holes matched with temperature control needles are formed in the side face of the temperature control module. A cold air control switch is arranged on the fixed base and connected with the cooling function platform through a cold air inlet pipe. The testing device has the advantages of being fast in assembly and convenient to replace the testing control panel and the power panel.

This invention discloses a rotating disk cavity test platform, comprising a main air intake system, a cold air intake system, an exhaust system, a power transmission system, a lubrication system, and a cooling water system. The main air intake system is connected to the test piece and provides the test piece with the required flow rate, temperature, and pressure of the main airflow. The cold air intake system is connected to the test piece and provides the test piece with the required flow rate, temperature, and pressure of the secondary airflow. The exhaust system is used to exhaust gas from the test piece, and the main air intake system and the cold air intake system are respectively connected to the exhaust system. The power transmission system is used to drive the rotation of the test piece. The lubrication system is used to lubricate the test piece and the power transmission system. The cooling water system is connected to the lubrication system and is used to dissipate heat from the lubricating oil in the lubrication system. This test platform introduces modeled main and secondary flows under high-speed rotation conditions to conduct rotating disk cavity flow and heat transfer tests, studying the effects of different engine speeds and variations in secondary flow rate / temperature / pressure parameters on disk cavity flow and heat transfer.

The invention provides a ventilation system, a motorcycle and a ventilation method, and relates to the technical field of motorcycles, in particular to the ventilation system which comprises a power unit and a decoration cover. Wherein the decoration cover is used for being installed on a vehicle body, and the decoration cover is provided with a cold air suction port, a hot air suction port and an exhaust port. Moreover, based on the arrangement that the air inlet of the power unit is selectively communicated with the cold air suction opening or the hot air suction opening, the ventilation system can cope with the temperature problem in different driving environments by organizing airflow around the driver, it is guaranteed that the temperature of the legs of the driver is kept in a comfortable interval, and the comfort of the driver is improved. Therefore, the thermal comfort of the driver in different driving environments is improved.

The utility model discloses an industrial gas temperature control valve belongs to temperature control valve technical field, including the valve body, the valve cover of fixed mounting on the upper end of valve body, set up the valve rod in the valve cover inside, the valve body both ends are equipped with cold gas air inlet and hot gas air inlet respectively, and the exhaust pipe is equipped in the lower extreme of valve body, and the inside of valve body is equipped with temperature control adjusting mechanism and gas mixing mechanism respectively, and temperature control adjusting mechanism includes setting the medium channel of valve body inner wall, the first medium intercepting cylinder of sliding connection in the medium channel inner wall, the blocking ring of fixed mounting in the lower extreme of valve cover, the second medium intercepting cylinder of sliding connection in the valve cover inner wall. The utility model discloses an industrial gas temperature control valve has the following advantages: this industrial gas temperature control valve, by mechanical type proportioning adjusting, need not external sensor or electronic control, reduce cost and eliminate response delay, and the first medium intercepting cylinder and second intercepting cylinder linkage and spiral blade design, solve the problem that traditional valve medium mixes unevenly.

To provide a refrigerator that can prevent the blockage of the cold air intake in the storage compartment. [Solution] The refrigerator comprises a storage compartment, a machine room where a cooling device is located, a cold air inlet for supplying cold air to the storage compartment, a cold air intake provided on the inner wall of the bottom of the storage compartment, and a ventilation cover attached to the storage compartment side of the intake. The ventilation cover has a connecting opening that communicates with the intake, a ventilation opening provided on a surface different from the opening surface of the connecting opening and communicating with the connecting opening, and a spacer that protrudes outward from the opening surface in a part of the periphery of the ventilation opening.