3684results about How to "To achieve the purpose of energy saving" patented technology

The invention relates to an air-powered engine assembly, which comprises an air tank, an air valve, an air distributor, an intake pipe, camshafts, an intake duct, an exhaust control device, air cylinders, pistons, crankshafts, couplers, clutches, automatic gearboxes and differentials connected with the outside. The assembly is characterized in that the air valve, a constant pressure chamber and a pressure controller are arranged between the air tank and the air distributor; the air distributor is connected with a plurality of air cylinders on an air cylinder gasket; each air cylinder is connected with an exhaust chamber through an exhaust manifold; the exhaust chamber is provided with a turbine generator which is connected with a storage batter; the air cylinders are provided with the camshafts for controlling the air intake and exhaust of the air cylinders; the air cylinders are provided inside with the pistons for driving the crankshafts to rotate; the camshafts and the crankshafts are connected by chains; and the crankshafts are connected with the differentials through the couplers, the clutches and the gearboxes in turn. Therefore, doing work through air compression rather than fuel, the air-powered engine assembly has the advantages of avoiding waste gas discharge and air pollution, along with reliable operation, convenient operation, economical efficiency, practicality and so on. In addition, due to recycle of the waste gas for power generation, the air-powered engine assembly saves energy and reduces costs.

The invention relates to a system level virtualization technology and an energy-saving technology in the field of the structure of a computer system, and discloses an energy-saving method of a cloud data center based on virtual machine migration and load perception integration. The method comprises the steps: dynamically completing the migration and the reintegration of the load of a virtual machine in the cloud data center by monitoring the resource utilization rate of a physical machine and the virtual machine and the resource use condition of current each physical server under the uniform coordination and control of an optimized integration strategy management module of the load perception and an on-line migration control module of the virtual machine, and tuning off the physical servers which run without the load, so that the total use ratio of the server resource is improved, and the aim of energy saving is achieved. The energy-saving method of the cloud data center based on the virtual machine on-line migration and the load perception integration technology is effectively realized, the amount of the physical servers which are actually demanded by the cloud data center is reduced, and the green energy saving is realized.

The present invention provides energy-saving interior lighting wireless intelligent control system based on ZigBee wireless communication technology and the control method. The control method is comprises of ZigBee communication network composed of a plurality of wireless network nodes and PC machine; the wireless network node comprises coordinator node, route node and terminal node; the coordinator node is connected with the PC machine to compose lighting control center; the unique coordinator node and all the route nodes compose the two-level network; the route node and the terminal node in the room compose the lighting sub-system for controlling the lighting mode of each room; the lighting control center controls the state of each node of the lighting sub-system and the preset lighting mode; the lighting sub-system automatically controls the lighting mode in the current room according to the collected environmental information. The present invention causes the lighting control to be intelligent, ensures the illuminance consistency; and the luminaires have long life, convenient management, low maintenance cost and are energy conservation and environmental protection.

The invention discloses a baking microwave oven. The baking microwave oven comprises a heating chamber, baking pipes and a baking pipe reflector, wherein the baking pipes are fixedly arranged on the top of the heating chamber; the reflector comprises a top cover, a left reflecting plate and a right reflecting plate which are rotatably arranged in the top cover and divide the top cover into three parts; the left reflecting plate and the right reflecting plate stretch along the arranging direction of the baking pipes; the rotating shafts of the left reflecting plate and the right reflecting plate stretch out of the top cover; the end parts of the rotating shafts are fixedly connected with a driving device; and the three baking pipes are fixedly arranged in the top cover and separated at intervals by the left reflecting plate and the right reflecting plate. The invention also discloses a control method of the baking microwave oven. The control method comprises the following steps that: (1) a user selects a proper baking working mode; (2) a main control chip switches on a corresponding baking pipe and drives a synchronous motor to make the left reflecting plate and the right reflecting plate reach set positions; and (3) the baking pipes work until the baking is finished. A baking radiation area is changed by controlling the working number of the baking pipes and adjusting the angles of the left reflecting plate and the right reflecting plate, a baking effect is improved, and the aim of saving energy is fulfilled.

The invention provides a method for intelligently controlling brightness of a flash of a camera. The method comprises the following steps of: receiving an environmental optical signal in an acquisition area of the camera; processing the optical signal to acquire an environmental image in the acquisition area of the camera, and acquiring a brightness signal and a luminous flux signal of the image; determining whether to turn on the flash according to the brightness signal and the luminous flux signal of the image; and comparing the brightness signal with a preset brightness reference value if the flash is turned on, and adjusting a brightness value of the flash according to a comparison result. The invention also provides a device for intelligently controlling brightness of the flash of the camera. The brightness signal is accurately detected, so that the turning-on time of the flash can be accurately and efficiently controlled, and the brightness of the flash is adjusted so as to fulfill the aim of supplementing light; and moreover, the invention has the advantages that: the device is energy-saving, and intensity of the brightness value of the flash is adaptively adjusted.

The invention provides a sewage treatment process optimization and energy-saving control system and a sewage treatment process optimization and energy-saving control method. The sewage treatment process optimization and energy-saving control system comprises a computer, an upper computer, an executing mechanism, more than one on-line monitoring instrument and more than one piece of water quality adjusting equipment, wherein the more than one on-line monitoring instrument is used for acquiring a water quality parameter of treated sewage; and the more than one piece of water quality adjusting equipment is used for adjusting the water quality parameter of the sewage. By acquiring sewage treatment field data, performing simulation treatment on the field data through a simulation model and calculating through a control model, a control signal is obtained to control the operation state of the water quality adjusting equipment so as to form a feed forward-feedback-control model calculation-execution artificial intelligent closed-loop control loop; and the water quality parameter which meets the process requirements can be calculated, and accurate control is performed on the parameter of the sewage water quality process, so that a sewage treatment process optimization and energy-saving effect is achieved.

The invention discloses a radio remote-controlled intelligent light control system which can be provided with light controlling diagrammatic maps, and comprises a microprocessor, a memory, a radio receiving and transmitting assembly, a touch-screen LCD, a key, an optical inductor and system processing software. The same address of a transmitter and a receiver, as well as the self serial number of a lamp are set, so as to ensure that the transmitter and the receiver are established to form a multi-unit communication system; therefore, the radio remote control of the light or electric apparatus can be realized; the touch-screen LCD on the transmitter displays control results and the light position control diagrammatic maps. The light control system is suitable for use in households, hotels and restaurants, companies, etc.

The invention discloses a linkage control method for an air conditioner and a fan. The linkage control method comprises the following steps of acquiring human body information detected by wearable equipment; and controlling the working states of the air conditioner and the fan according to the acquired human body information so that a human body reaches a comfortable state. The invention also discloses a linkage control device and system for an air conditioner and a fan. By using the linkage control method, device and system, not only is the automatic control of the air conditioner and the fan realized, but also the aim of saving energy is achieved.

The invention provides an air conditioner indoor unit and an air supply method thereof. The air conditioner indoor unit comprises multiple fans; and each fan is corresponding to at least one exhaust port. The air supply method comprises the steps of: obtaining indoor human body information, wherein the human body information includes a human number, human body comfort parameters and distances from human bodies to the air conditioner indoor unit; and controlling the opening number of the fans, the air speeds of the fans and the air supply direction of the air conditioner indoor unit according to the human body information. The air conditioner indoor unit not only widens the air supply range, and realizes intelligent air supply, so that the adjustment of the total air quantity, the air speed and the air direction is more precise, the user experiences are improved, and the purpose of saving energy is achieved.

The invention relates to a multi-operating mode energy-saving controlled combined type thermostatic and humidistatic air conditioning unit with a thermometal compound box body structure special for nuclear power stations. The air conditioning unit comprises a control system and a box body structure, wherein a primary-efficiency filter, a medium-efficiency filter, a surface cooler, a heater, a humidifier and a blow-off device are sequentially arranged in the box body; the front side of the primary-efficiency filter is provided with a fresh air and return air mixing section, and inlets of fresh air and return air are respectively provided with a fresh air proportioning valve and a return air proportioning valve; the control system adopts a programmable logic controller (PLC) and adopts air conditioning multi-operating mode zone control to realize the energy-saving operation of the unit; the surface cooler adopts a large temperature difference cold water heat exchanging technology and can save the investment and operation expenses of a water system; and the box body adopts a double-layer compound structure and an anti-shock device to meet the special requirements on the nuclear power stations. The invention has the characteristics of high efficiency, energy saving, good tightness, strong anti-shock capacity, safety, reliability, long service life, and the like.

The invention relates to the technical field of steam generators, in particular to a steam generator of an annealing furnace and a control method thereof. The steam generator of the annealing furnace comprises an electric heating device twisted with resistance wires, a built-in dry combustion liner, a PLC controller, a water supply device, a thermocouple, and a steam distributor communicated with an inner chamber of a steam oven. The steam generator of the annealing furnace can better utilize heat brought by wires, avoids the waste of water and electric energy caused by overflow, improves the stability of steam, simplifies structure, is easy to operate, and reduces manufacturing cost and maintenance cost.

The invention relates to the technical field of wireless communication, and aims to provide a method which is used for adjusting the sending rate and the sending power of remote TDMA wireless transmission to ensure that the sending rate and the sending power can quickly give response to link quality changes, thereby effectively improving the link throughput rate and reducing equipment power consumption as much as possible. The order to achieve the aim, the technical scheme of the invention is that: a method for combined adjustment of the adaptive rate and the power of a remote WiFi link comprises the following steps of: detecting a functional relation between physical layer information of received signals and wireless network properties and equipment energy consumption first; and then selecting proper sending rate and power for the next time slot according to the physical layer information of a frame received by the last time slot. The method is mainly applied to wireless communication and wireless networks.

The invention discloses a hydraulic energy-saving system which includes a hydraulic oil tank, a variable pump, a speed control valve, a first electromagnetic directional valve, a hydraulic cylinder, a first travel switch, a second travel switch, a second electromagnetic directional valve, a third electromagnetic directional valve, a fourth electromagnetic directional valve and an energy accumulator. When the hydraulic oil tank adds oil to a rodless cavity of a hydraulic cylinder, the oil in a rod cavity of the hydraulic cylinder flows into the energy accumulator through a pipeline. In a restoration process of the hydraulic cylinder, the energy accumulator adds the oil into the rod cavity of the hydraulic cylinder through the pipeline. The hydraulic energy-saving system solves the loss problem of hydraulic oil in an oil return pipeline and an overflow pipeline in a traditional hydraulic system; the hydraulic oil in the oil return pipeline and the overflow pipeline is recycled through the hydraulic energy-saving system. The recycled hydraulic oil is reutilized in a main oil channel so that the purpose of energy-conservation is achieved.

The invention provides a cooling device of a fracturing truck. A support of the integrated cooling device of the fracturing truck is connected with a connection base and a chassis crossbeam connection frame through a shock pad by means of a bolt, a control device and a lubrication oil tank provided with a lubrication oil temperature sensor are arranged below the chassis crossbeam connection frame, a fuel tank provided with a fuel temperature sensor is arranged at the lower portion a truck crossbeam, the upper front portion of the truck crossbeam is provided with a hydraulic oil tank provided with a hydraulic oil temperature sensor, an electrically-controlled volume adjustable hydraulic pump is arranged at the lower portion of the hydraulic oil tank, the electrically-controlled volume adjustable hydraulic pump is connected with an engine provided with a water temperature sensor, and the other side of the engine is provided with a transmission tank provided with a transmission tank oil temperature sensor. A horizontal heat sink is respectively provided with an engine water-cooling device, a power end cooling device, a hydraulic cooling device, a fuel cooling device and a transmission tank cooling device. According to the cooling device of the fracturing truck, a horizontal structure and a concentrated heat dissipation mode are adopted, a pipeline of a cooling system is arranged reasonably, and the requirements for the weight and installation space of vehicle-mounted fracturing equipment are met.

The invention discloses indoor lamplight intensity control system and method. The system comprises a single-chip microcomputer, an A / D (analog-to-digital conversion unit), a detection unit, a display unit, a key unit and a drive unit. The single-chip microcomputer is respectively connected with the A / D conversion unit, the detection unit, the display unit, the key unit and the drive unit. The A / D conversion unit is further connected with the detection unit. The detection unit comprises a sensor detection array and a signal processing unit. The sensor detection array is used to respectively acquire user behavior signals and light intensities, self-induction and self-adjustment of a lamp control network are achieved through the single-chip microcomputer, the lamplight intensity is displayed in real time, and accordingly such problems that a common lamp control system has single controllable parameter and lamp demand judgment is unclear are solved. People's life is greatly facilitated, and energy is saved to the certain extent. The system is capable of turning on and off automatically and is stable and reliable in operation and easy to maintain and update.

The invention relates to a system containing a cogeneration unit and a pure condensing steam thermal power unit, comprising the cogeneration unit, the pure condensing steam thermal power unit, an air-conditioner heat pump, an electric energy meter, a radiator, a heat consumed meter and a scheduling control device, wherein the scheduling control device is used for collecting power consumption data detected by the electric energy meter and heating consumption data detected by the heat consumed meter to obtain a scheduling control signal and controlling the running of the cogeneration unit, the pure condensing steam thermal power unit, the air-conditioner heat pump and the radiator. Aiming at energy conservation scheduling during the off-peak period of electric load and energy conservation peak regulation during the low ebb period, the invention performs optimum allocation and control of heating demand and electricity output so as to reduce total energy consumption, thereby achieving the purpose of energy conversation.

This invention relates to a load capacitance and voltage regulation switch characterizing in the following structure: a voltage-regulation static contactor is mounted on an insulated drum of a load capacitance-regulation part, a voltage -regulating bracket is set in the drum, a voltage-regulation dynamic contactor and a transition resistor are set on the bracket to integrate the load capacitance and voltage regulation, a set of operation unit is used between the quick unit of the capacitance and the voltage regulation parts by an electromagnetic clutch and an electric control box is set for adjusting capacitance and voltage automatically according to the change of loading current and voltage of a transformer.

The invention provides a powerless type air heat recollection device which is characterized in that the device at leased includes a fresh air channel used for bringing in fresh air and an air exhaustion channel to exhaust the indoor air, wherein, the two ends of the fresh air channel are respectively provided with an air inlet A communicated with the outside and an air outlet B communicated with the inside. The two ends of the air exhaustion channel are respectively provided with an air outlet A1 communicated with the outside and an air inlet B1 communicated with the inside; at least either of the air inlet A or air outlet A1 is provided with an air cap which includes a wind wheel and shaft, which are driven by the external wind power, and a fan which is driven by the shaft and can form a fixed air intake or exhaustion flow in the fresh air channel or the air exhaustion channel under the drive of the wind cap; the device also at least includes a heat exchanger which runs through the fresh air channel and the air exhaustion channel.

The invention discloses an auxiliary driving system and method for rapid passing of a vehicle in a crossing. The system comprises an information collection module, a vehicle positioning module, a barrier identification module, a database module, a signal lamp information module, a vehicle auxiliary decision module and an automobile power system. According to technical features of road traffics and physical features of drivers, a method including guiding information through which each crossing can be passed rapidly and smoothly and a vehicle in front can be overtaken is provided for the driver in the driving process, the guiding information including whether to overtake, the concrete driving speed and the like, and thus, when the vehicle is driven according to the guiding speed and manner, the crossing can be passed without stop, and core technical support is provided for development of Internet of vehicles and automatic driving technologies.

The invention discloses an earphone system and a control method with automatic sensing detection and control functions. The earphone system comprises a control unit, an electronic sensing and detecting unit and a signal processing unit, wherein the electronic sensing and detecting unit is used for automatically sensing and detecting the wearing state of an earphone, a detecting signal is correspondingly generated and sent to the signal processing unit, the signal processing unit is used for receiving a detecting signal sent by the electronic sensing and detecting unit, processing and converting the detecting signal into a signal capable of being identified by the control unit and sending the signal to the control unit, and after the control unit receives the signal processed by the signal processing unit, a control instruction is generated and sent to an earphone main body circuit unit. The electronic sensing and detecting unit in the earphone system with the automatic sensing detection and control functions is a non-mechanical type switch, can automatically sense and detect the wearing state of the earphone with the head of the human body directly serving as a target, and the problems of misjudgment of a mechanical switch and poor precision are solves. The earphone system is convenient to use and truly achieves the energy saving aim.

The invention discloses a coal-fired power plant flue gas heat regenerative system and an energy-saving water-saving ultra-clean discharging method. The temperature of the flue gas is reduced to about 90-110 DEG.C through a low-temperature coal economizer, and the recycled flue gas heat heats primary and secondary wind entering a boiler through a steam air heaters, so that the first stage of heat regenerative cycles is achieved. The temperature of the flue gas at the outlet of a desulfurization tower is reduced to 30-40 DEG.C through a vacuum flash evaporation and solidification device and a low-temperature heat pump heat exchange device, and a part of water vapor of the flue gas is condensed and collected, so that water is saved. The low-temperature heat pump heat exchange device absorbs the latent heat released in flue gas sensible heat and condensation processes, and dry as-fired coal and air are heated, so that the second stage of heat regenerative cycles is achieved. A boiler slag discharge system recycles the waste heat of heat slag, and the as-fired coal is heated, so that the third stage of heat regenerative cycles is achieved. When the waste heat is not used up, the remained waste heat can be utilized, so that energy is saved. Low-temperature desulphurization slurry led out from the vacuum flash evaporation and solidification device is injected into the desulfurization tower, so that the desulphurization efficiency is improved, and an ultra-clean discharging objective is achieved.

The invention relates to an energy-saving hydraulic shield propulsion system, and aims to provide a hydraulic shield propulsion system. The rotating speed of a variable frequency motor is controlled by adopting a frequency converter to regulate the output flow of a constant flow pump to make the output flow of a hydraulic pump matched with the required flow of the shield propulsion system, so that the aim of saving energy is fulfilled. The energy-saving hydraulic shield propulsion system comprises a controller, the frequency converter, the variable frequency motor, the constant flow pump, a proportional pressure reducing valve, electromagnetic valves, sensors and hydraulic cylinders. Detected signals are output to the controller by a pressure sensor and a built-in displacement sensor, and the frequency converter is controlled by the controller, and controls the rotating speed of the variable frequency motor to regulate the output flow of the constant flow pump to be matched with the required flow of the shield propulsion system without producing a redundant flow to maximally avoid energy loss and further realize energy saving.

The invention is applicable to the field of air conditioner controlling and provides a control method and circuit for an electronic expansion valve of an air conditioner. The method includes: acquiring target exhaust temperature according to operation frequency of a compressor, detecting actual exhaust temperature of the compressor, and determining a corrected value of superheat degree of return gas according to the target exhaust temperature and the actual exhaust temperature; determining a target initial value of the superheat degree of the return gas; calculating a current deviation of the superheat degree of the return gas according to current superheat degree of the return gas and the corrected value of the superheat degree of the return gas, and determining correction and adjusting time of the electronic valve according to a deviation of the superheat degree of the return gas, obtained by previous calculation; adjusting opening of the electronic expansion valve according to the correction of the electronic expansion valve, and keeping the opening of the electronic expansion valve unchanged in an adjusting period of time. On the basis of superheat degree control, by integrating the double factors, namely the superheat degree of the return gas of the compressor and the exhaust temperature of the compressor, an optimal control scheme is provided; energy saving is achieved.

The invention relates to an electric hydraulic steering device for a commercial vehicle and belongs to the field of automobile power-assisted steering gears. The electric hydraulic steering device is composed of a recirculating ball steering gear, an intermediate shaft, a spindle, a worm gear, a worm, a sensor, a supporting seat, a motor and a controller, an intermediate shell is fixedly mounted on one side of a connecting valve of the recirculating ball steering gear through a connecting screw, the spindle is mounted in the intermediate shell through a bearing A, one end of the spindle is connected with an input shaft key of the recirculating ball steering gear while the other end of the same extends to the outer end of the intermediate shell, the intermediate shaft is movably mounted on the spindle in the intermediate shell in a sleeving manner and connected with a steering screw of the recirculating ball steering gear. When a vehicle runs normally, the motor and hydraulic power assistance work jointly, so that hydraulic power assistance needed during steering is reduced and the objective of saving energy is achieved; an electronic control unit (ECU) does not provide or provides small electric power assistance according to vehicle speed signals at a high speed, so that requirements on driving stability and safety are met.

A controller based on VAV air conditioner fresh air optimizing allocation belongs to the building surroundings equipment as well as control technique field. In the invention, the input module captures required data to transmit to the storage module, the storage module stores the desired data, the fresh air calculation and control module calculates the total fresh air amount of the system and fresh air amount of each area and their ratio, the maximum fresh air requirement ratio is found out to be the fresh air ratio setting value for system air blow. The fresh air valve control module takes the total fresh air amount as the setting value, and the results are transmitted to the fan valve executor according to PID control. A double cold control module calculates the air blow setting enthalpy value of each area terminal, which is transmitted to a water flow regulate module controlled by the enthalpy difference, and the module transfers the valve position information to the water valve executor according to PID control based on the air blow setting enthalpy value and sampling value passing through the termini serpentinepipe. The invention not only does not increase thee fresh air load, but also avoids cold-hot counteract, meanwhile compromises indoor air quality.

The invention comprises a material feeding device, a drying tower, a No 1 fan, a No 1 heater, a first-level cyclone separator and water-membrane dust remover. A hot air distributor and an atomizer which is arranged at the center of the hot air distributor and is connected with the material feeding device are arranged on the top of the drying tower. An air channel disk with a spiral-case shaped air channel is arranged on the top of the drying tower. The inlet of the air channel disk is connected with the output pipeline of the No1 heater, and the outlet of the spiral-case shaped air channel is connected with the inlet of the hot air distributor. A clamp sleeve is arranged in the internal tower body and near the top of the drying tower. A wall-blowing air channel is a space between the clamp sleeve and the inner side wall of the tower body. An annular clearance between the clamp bottom and the inner wall of the tower body is an air vent, and the air forms the wall-blowing air through the annular clearance. The invention adopts the air channel disk spiral air-feeding and wall-blowing feeding technique of the spiral-case shaped air channel, which not only can enhance drying efficiency but also can provide the wall-blowing air to form an air membrane in the drying tower. The air membrane can isolate powder materials from the tower wall so as to avoid a wall-sticking phenomenon.

The present invention provides a solar boiler and a circulated thermal pipe, and relates to a solar collecting, conversion, heat transfer and heat exchanging device. The solar radiation is reflected and congregated to a heat absorption pipe arranged on a axial line of a reflector of single-curved surface by the reflector of single-curved surface, converted into heat energy after the absorption of sunshine by a coating layer, and the heat energy is delivered to a heat exchanger by a circulated thermal pipe, and the continuous working ranging from dozens of DEG C to 1,700 DEG C is achieved by the adoption of the working fluid of mutual solution. The circulated thermal pipe has automatic adjustment of the flow rate, rapid heat transferring of large power, large falling, long distance and small temperature differences, working of high temperature and low pressure, using of cold regions minus 40 DEG C and safe using. The present invention has lower failure rate by adopting a device intermittently and unified driving the reflector to track the solar device, stable and adjustable heating parameters by phase change thermal storage of paralleled connected small containers, multifunction and combined using of high, middle and low temperature, wide ranges of application, and can be used for the industrial heating of hydrogen production, power generation, refrigeration, freshwater production, pure water production, gas supplying, heat supplying, chemical and oil, etc.

Provided is an accelerating and energy-saving moving device, a certain distance and a fluid layer are positioned between an outer case and an inner case of the device, the fluid layer is fore-and-aft communicated with a leading-in port arranged at the front end and a leading-out port mounted at the rear end, at least one leading-in port and one balance port which are arranged on the surrounding case body of the outer case are communicated with the fluid layer, the leading-in port, the balance port and the leading-in port which is arranged at the front end receive forward fluid, and the forward fluid is discharged from the leading-out port which is disposed at the middle portion or rear end of the device after passing through the fluid layer. An impeller and a generator are driven by the fluid layer to replenish energy source for fuel power and to drive a motor, a speed reducer, a differential mechanism and two half-spindles via a control panel, and the moving device is further driven to move. The invention further discloses energy-saving devices which employ the method, such as cars, trains, ships, submarines, airplanes, missiles, rockets and the like, the invention is in particular applicable to cars and trains. The resistance of a moving body in moving can be greatly reduced with the employment of the invention, and the energy consumption is greatly lowered, thereby the moving body can be accelerated extremely rapidly.

The invention provides an Internet of Vehicles communication control method and an Internet of Vehicles communication control device. The Internet of Vehicles communication control method comprises steps that a road side unit RSU is used to receive first instruction information, which is used to instruct the RSU to start or stop transmitting V2X messages; the RSU is used to respond to the first instruction information to start or stop the transmitting of the V2X messages. A problem of large communication power consumption caused by inability of reasonably controlling the communication process of the Internet of Vehicles is solved.

The invention relates to a method to pre-treat a hard-to-leach gold ores-pyrite by microwave roasting, which is characterized in that the gold ores-pyrite or fine gold ores-pyrite with the granularity being 200 meshes which takes 90% to 95% of the whole gold ores-pyrite is positioned in a reaction chamber of a microwave roasting oven, a nitrogen is filled fully into the reaction chamber, starting the microwave roasting oven, the gold ores-pyrite or fine gold ores-pyrite is radiated and roasted by the microwave in the nitrogen atmosphere, the roasting temperature is 450 to 580 degree centigrade, the power is 4 to 6kw, the microwave roasting oven stops working after roasting for 5 to 20 minutes, a roasted product is made when the roasting gold ore-pyrite is taken out. The method to pre-treat a hard-to-leach gold ores-pyrite by microwave roasting has the advantages of increasing the gold leaching yield of the hard-to-leach gold ores-pyrite up to over 90%, reaching purpose of the environment protection because the sulfur is precipitated as a free sulfur without the recovery process of smoke and dust, and saving the energy because the microwave roasting process is adopted and the pretreatment time is greatly shortened.