35results about How to "Guaranteed air supply" patented technology

The invention discloses a gas water heater. The gas water heater comprises a combustion chamber, a fan, a constant-current regulating module and a control module, wherein the fan is used for conveying air to the combustion chamber and discharging the combustion tail gas in the combustion chamber out of the chamber; the constant current regulating module is used for collecting current signals of the fan and regulating the fan to run in constant current according to the current signals and control signals of the fan; and the control module is used for outputting the control signals of the fan to control the fan. The gas water heater has the advantages that when the exhaust is not smooth, the normal air supply in the combustion chamber can be guaranteed to carry out normal combustion and guarantee the safety. The invention also discloses an exhaust controlling method of the gas water heater.

The invention discloses a heat pump system for increasing the air supplementation amount through heat recovery and a control method thereof. The heat pump system comprises a two-stage compressor, an indoor heat exchanger, an outdoor heat exchanger and a flash evaporator. The heat pump system is characterized in that the heat pump system further comprises a heat return air supplementation device; the heat return air supplementation device comprises a heat storage heat exchanger, a first branch circuit and a second branch circuit; the heat storage heat exchanger recycles heat of a two-stage compressor shell; the first branch circuit enables a second end opening of the indoor heat exchanger to be connected with an inlet of the heat storage heat exchanger through a first heat return solenoid valve; the second branch circuit enables a second end opening of the outdoor heat exchanger to be connected with an inlet of the heat storage heat exchanger through a second heat return solenoid valve;and an outlet of the heat storage heat exchanger communicates with the flash evaporator through a pipe. According to the heat pump system, the heat of the two-stage compressor shell is recycled for increasing the air supplementation amount, so that the problem that the air supplementation amount, required in the high-frequency running process, of a low-temperature variable frequency heat pump system is insufficient is solved; and meanwhile, the heating capacity and the refrigerating capacity are increased.

The invention provides a water-cooled biomass boiler anti-coking method and device. A helical blade is welded to a hollow shaft, and the hollow shaft is internally provided with a water inlet pipe; the tail end of the water inlet pipe and the tail end of the hollow shaft form a jacket structure to guarantee that cooling water can be recycled smoothly; water enters the water inlet pipe, passes through the hollow shaft and finally flows out of a water outlet pipe; jacket structures including the water inlet pipe, the hollow shaft, the helical blade and the like are adopted, the helical blade smashes coke blocks in a hearth and sends the coke blocks out of the hearth, normal air feeding at the bottom of the hearth is guaranteed, fuel can be burnt completely, and the coking problem is solved; the heating temperature of steel is lowered through circulating of water, universality of selected materials is guaranteed, a special material resistant to a high temperature is not needed, and only ordinary steel is needed; and an automatic deslagging function is achieved, and ash generated after the fuel is completely burnt is discharged out of a furnace along with the smashed coke blocks through rotation of the helical blade.

The invention relates to an air supplying system and method of an experiment table of a small supercharged boiler. The air supplying system comprises a supercharger and the supercharged boiler, wherein an air outlet of the supercharger is connected with an air inlet of the supercharged boiler by a pipeline. The air supplying system is characterized by comprising a flue-gas turbine and a roots blower, wherein a flue-gas outlet of the supercharged boiler is connected with the flue-gas turbine by a pipeline; the flue-gas turbine is coaxial to the supercharger; an air outlet of the roots blower is connected with the air inlet of the supercharged boiler by a pipeline. The air supplying system has the advantages that the roots blower provides high-pressure air for the supercharged boiler to start the supercharged boiler; the air is compressed into supercharged air by the supercharger, the supercharged air enters the supercharged boiler, high-temperature flue gas exhausted by the supercharged boiler pushes the flue-gas turbine to do work, the flue-gas turbine converts heat of the high-temperature flue gas into kinetic energy and then drive the supercharger.

The invention discloses an underground local ventilator power supply system. One power special supply circuit is additionally added for supplying power for fans and controlled by a spare fan switch on a basis of a power supply system with two fans, two power supplies, three special power supply lines and two closed locks so as to ensure the power special supply circuit supplies power normally when a fan special supply circuit has failure, so that unplanned wind stopping is avoided. Through the underground local ventilator power supply system, safety of power supply for a local ventilator on a coal mine underground tunneling working surface is improved; the situation of unplanned wind stopping on a tunneling head caused due to reasons of circuit failures, manual error operation and the like can be reduced and avoided; and potential safety hazard brought for production due to increase of gas of the tunneling head caused due to the unplanned wind stopping can be eliminated.

The invention relates to a civil air defense project ventilation system comprising a door frame and a door body arranged in the door frame and further comprising a first air inlet pipe. A suction ventilator is connected to the end, located indoors, of the first air inlet pipe. An air outlet pipe is connected to the air outlet end of the suction ventilator. A filtration box and a detection sectionare arranged between the first air inlet pipe and the suction ventilator sequentially. A second air inlet pipe communicates with the first air inlet pipe. A third valve and a purifier are connected between the second air inlet pipe and the suction ventilator sequentially. During use, an external power source is connected, the suction ventilator is driven, at the moment the first air inlet pipe sucks outdoor air to the interior, the sucked-in air passes through the filtration box first and is then detected so as to judge whether the air contains harmful gas, if yes, the air is introduced into the purifier to be purified, and thus the air entering the interior is not liable to injure human bodies. The civil air defense project ventilation system has the effects that when outside air is poorin quality, the quality of the air entering the interior can still be ensured.

The invention discloses a rotary type ladle baker and belongs to the field of ladle baking. According to the technical scheme, the rotary type ladle baker comprises a ladle cover. A fuel gas pipe is fixedly connected to the middle of the ladle cover and penetrates the ladle cover. A nozzle is fixedly connected to the end, penetrating the ladle cover, of the fuel gas pipe. An air inlet pipe is fixedly connected to the circumferential face of the ladle cover. A spiral type air channel is formed in the position, corresponding to the air inlet pipe, inside the ladle cover. The air inlet pipe communicates with the air channel. An air supply pipe is arranged at the end, close to the fuel gas pipe, of the air channel in a communicating manner. One end of the air supply pipe is fixedly connected to the ladle cover, and the other end of the air supply pipe is fixedly connected to the fuel gas pipe. An air distribution pipe is fixedly connected to the air supply pipe, and a spray nozzle is fixedly connected to the other end of the air distribution pipe. The spray nozzle is fixedly connected to the ladle cover and penetrates the ladle cover. The spray nozzle obliquely extends to the nozzle and penetrates one end of the ladle cover. By means of the rotary type ladle baker, the problems that a ladle baker is long in heating time, and the consumption of fuel gas is large are solved; and theeffects that the heating time of the ladle baker is shortened, and the consumption of the fuel gas is lowered are achieved.

The invention discloses a defrosting method of a dehumidifier. The defrosting method of the dehumidifier comprises the following steps that the temperature condition of a first heat exchanger in a previous period of time is detected in real time and is compared with a preset temperature; then the average temperature of a first heat exchanger before v minutes and the average temperature of the first heat exchanger before w minutes are compared with the average temperature Tna obtained in real time twice, a state that defrosting state is needed is judged as long as one temperature comparison meets a preset requirement, and then defrosting is started, meanwhile, in the defrosting process, a fan is not stopped firstly, and it is guaranteed that the effect that the fan continues supplying air and then the dehumidification is conducted through a second heat exchanger so that the dehumidification effect can be further achieved in the initial defrosting stage.

The invention discloses a locomotive mutual backup power supply system, and the power supply system comprises a standby cabinet and an inverter cabinet. The standby cabinet is a DC600V direct power supply device, is connected with two power conversion knife switches, and carries out the switching of a main loop input power supply and a main loop output filter reactor of the DC600V direct power supply device. The two power conversion knife switches are three-pole and double-throw switches, have an interlocking function, and prevent the electric crosstalk of a rectification loop. The DC600V direct power supply device is a three-phase full-bridge half-control silicon controlled rectifier phase control rectification device. The interior of the inverter cabinet is provided with an inversion power supply, and the inversion power supply is an IGBT three-phase full-bridge inversion device. When an inverter detects that the air pressure of a main air reservoir is not sufficient, the inverter outputs a 3AC380V alternating current to a compressor. When the inverter detects that the air pressure of the main air reservoir is sufficient, the power supply is stopped, so as to guarantee that the air pressure of the main air reservoir is sufficient. When an original locomotive has a power fault, the power can be switched to the standby power supply, so as to guarantee the normal operation of the locomotive.

The invention provides the technical scheme of a security air system for preventing the slag from entering blast furnaces. The security air system comprises three 1750m<3> blast furnace air supply pipelines, one 3200m<3> blast furnace air supply pipeline and a ventilation pipeline, wherein the ventilation pipeline is communicated with the 1750m<3> blast furnace air supply pipelines respectively and is also communicated with the 3200m<3> blast furnace air supply pipeline, all the 1750m<3> blast furnace air supply pipelines are provided with pressure transmitters, pipeline butterfly valves and electronic quick-opening valves, the ventilation pipeline is provided with a pressure transmitter, the 3200m<3> blast furnace air supply pipeline is communicated with the ventilation pipeline through a first passage and a second passage respectively, each of the first passage and the second passage is provided with an air supply butterfly valve, a first pipeline is further provided with a check valve and a pneumatic quick-opening valve, and the second passage is further provided with a regulating valve. According to the technical scheme, the automatic introduction of the security air among a plurality of blast furnaces can be achieved according to the variation condition of the air pressure without the need of arranging fan equipment independently, and the phenomenon that slag enters the blast furnaces due to abnormal stop of the blast furnaces is effectively prevented.

The invention relates to a speed boat. The speed boat comprises a boat body and an engine room ventilation system; the engine room ventilation system comprises two ventilation units which are symmetrically arranged on two sides of the boat body; each ventilation unit sequentially comprises an inlet, a moisture separating device and an outlet along a fluid advancing direction; the inlets are formed in an engine room deck; openings of the inlets are towards a boat bow; the length direction of the moisture separating device is arranged along the length direction of the boat body; each ventilation unit also comprises a drainage device and a settling device which is arranged at the upstream of the corresponding moisture separating device; each drainage device comprises a collector and a drainage opening which is communicated with the collector; each collector comprises a bottom surface of a fluid channel of the moisture separating device and a bottom surface of a chamber; each drainage opening is formed in the external lateral side of a board side; the outlets comprise air outlets of the fluid channels and the drainage openings of the drainage devices. Compared with the existing speed boat, air resistance generated by the engine room ventilation system of the speed boat to the boat body is relative small and improvement of the navigational speed of the speed boar is facilitated.

The invention discloses a constant-pressure wind supply electric control system of an air blower and an electric control method of the constant-pressure wind supply electric control system. The electric control system comprises a wind pressure transmitter, an SFD (Single Frequency Dialing) signal isolator, an intelligent PID (Proportion Integration Differentiation) adjuster, a switching power supply device, a change-over switch, an electromagnetic relay and a variable frequency starting switch; the wind pressure transmitter is mounted in a wind supply pipe of the air blower; the SFD signal isolator, the intelligent PID adjuster, the switching power supply device, the change-over switch and the electromagnetic relay are integrated and mounted in a distribution box through an electric control circuit. According to the constant-pressure wind supply electric control system of the air blower, after online intelligent initiative sensing, automatic analysis and rapid processing are carried out according to the size of wind quantity, a signal is transmitted to a Roots air blower frequency converter; the frequency converter is used for adjusting the level of frequency according to the intensity of an input signal and the system is used for supplying wind under a constant-pressure state.

The invention belongs to the technical field of refrigeration, and discloses a condensing unit, refrigeration equipment and a refrigerator car, the condensing unit comprises a box body, a condenser and a condensing fan, a first opening is formed in the top of the box body, a second opening is formed in the bottom of the box body, the condenser is obliquely installed at the first opening in the box body, the condensing fan is installed at the first opening in the box body, and the second opening is formed in the bottom of the box body. The condenser is located on the air inlet side of the condensation fan, the air outlet side of the condensation fan is arranged towards the first opening, and the condenser still has high heat exchange efficiency under the working condition that the installation space of the condensing unit is narrow. The refrigerating unit is adopted in the refrigerating equipment and the refrigerator car, when the installation space of the condensing unit is small, the refrigerating equipment still has high refrigerating efficiency, and the cooling capacity of the refrigerator car can still be powerfully guaranteed.