1940results about How to "Improve energy efficiency ratio" patented technology

This invention relates to an energy-saving central air conditioning system, which comprises cold and hot water source host, terminal device and the control system to adjust and monitor. The said control system processes according to the large amount of data collected to get the needed optimized status operation orders. It real-time adjusts the each part load of the system into cold storage or cold discharging modes and the said host works under the mode of cold storage and stops working in cold discharging mode.

A sash for windows and doors equipped with an anti-dewing hot wire is provided. A double-layered glass, which is included an indoor sheet of glass and an outdoor sheet of glass spaced from each other by a spacer and filled with a desiccant material is fixedly installed on a sash frame. The frame, which is formed with a hollow tube with a reception groove in one surface and the double-layered glass sealed with sealant, comprises the hot wire, for generating heat by means of supplied power, attached along an edge of an inner surface of the indoor sheet of glass, a through hole for passing an electric wire electrically connected to the hot wire, formed through a designated portion of the spacer located on the lower portions of the indoor and outdoor sheets of glass of the double-layered glass, and a controller, which is connected to the electric wire for controlling the output of a power supply unit for supplying a driving voltage to the hot wire according to a user's manipulation signal, located in the hollow of a lower frame member of the sash frame. The sash effectively prevents the edge and inner surface of the indoor sheet of glass from dewing, and improves thermal insulation effects.

A dual (or multi) sectional evaporator system comprising first and second (or more) evaporator sections capable of cooling the air supply through the evaporator. The first evaporator section is positioned upstream of the second evaporator section (second upstream of the third and so on). However, the warmest refrigerant passes through the first evaporator section and the coldest refrigerant passes through the second evaporator section (or last evaporator section if more than two sections), such that the air supply is precooled prior to reaching the second (or last) evaporator. Providing a two (or more) passes of refrigerant through the dual (or multi) sectional evaporator system increases the superheat temperature out of the first evaporator up to about 25 degrees Fahrenheit, and / or increases the mass flow of refrigerant because of the increased heat exchange efficiency provided by counterflow heat exchange. Moreover, in the preferred embodiment for an A-coil or slant coil, the second evaporator section is positioned over the top of the first evaporator section such that the second evaporator overlays the first evaporator section in order to maximize the use of available space. Also, A-coil or slant coil forms of the present invention are configured such that they include contoured cut-out shaped corner portions wherein the squared corners of the evaporators are substantially eliminated thereby eliminating the dead air flow spaces typically associated with other known evaporators. The elimination of the dead air space allows the system to operate at a lower fan speed as well as allows the system to be constructed and operate within smaller confines.

The invention discloses a hot air drying system heated by double energy sources, which comprises a heating chamber with a fresh air opening, a drying chamber, a solar heating device, an air source heat pump and a condenser fan of the air source heat pump, wherein the upper part of the heating chamber or the drying chamber is provided with a dehumidifying opening; a condenser and the condenser fan of the air source heat pump are arranged in the heating chamber; a hot water heat exchanger of the solar heating device is arranged at the front end of an air inlet of the condenser in the heating chamber; the condenser fan supplies air in an induced draft way; the ratio of the heat exchange area of the condenser to the input power of a compressor is 5.3 to 11 m<2> / kw; the ratio of the heat exchange area of the hot water heat exchanger to the input power of the compressor is not less than 1.5 m<2> / kw; and the total pressure of the condenser fan is 100 to 400 Pa. The hot air drying system heated by the double energy sources makes full use of solar energy as a hot air heat source for drying, solves the problems of the independent use of the solar energy, achieves high energy efficiency ratio by adopting the air heat pump as the hot air heat source, is energy-saving, environmentally-friendly and low in running cost, and manifests the advantages of the combined use of the air source and the solar energy in oven-drying.

The invention relates to the field of heating ventilation air conditioners, in particular to an improved air treatment method and a fresh air conditioner device. The invention improves the problems of traditional fresh air treatment and air conditioners and particularly emphasizes that a plate-type air-air heat exchanger and indirect water evaporative cooling are used for recycling energy of sensible heat and latent heat in air exhaust in the fresh air treatment process of damp and hot regions in summer and condensed water is directly evaporated on an evaporator to improve the working condition of a compressor. Under the condition of quantificationally supplying outdoor fresh air, the energy efficiency ratio of the fresh air conditioner is increased, the thermal pollution, damp pollution and noise pollution of the fresh air conditioner to environments are reduced, the indoor air quality is improved, and meanwhile, the fresh air conditioner provides the manufacture, installation and using convenience for a local region all-air central air conditioner. The fresh air conditioner provided by the invention and a design and manufacture method of the fresh air conditioner are applicable throughout the year in various regions, particularly in the damp and hot regions; and the fresh air system provides controlled, comfortable and healthy air environments for indoor activity space of people and air conditioner environments for technology for processing, storage and the like.

The invention discloses a heat recovery type multi-connection air condition unit, comprising at least one outdoor unit, a plurality of indoor units and at least one hot and cold converter. The outdoor unit comprises a compressor, an outdoor heat exchanger, a subcooler, two four-way reversing valves and three refrigerant pipelines; each indoor unit comprises an indoor heat exchanger; and the hot and cold converter comprises expansion valves and a bypass capillary, wherein the expansion valves control the on-off of a high pressure air pipe and a low pressure air pipe, and the bypass capillary is arranged between the high pressure air pipe and the low pressure air pipe. When the indoor unit connected with the hot and cold converter is used for heating, the expansion valve at the high pressure air pipe side is turned on and the expansion valve at the low pressure air pipe side is turned off to realize the connection of the air pipe of the indoor unit and the high pressure air pipe. When the indoor unit connected with the hot and cold converter is used for cooling, the expansion valve at the low pressure air pipe side is turned on and the expansion valve of the high pressure air pipe is turned off to realize the connection of the air pipe of the indoor unit and the low pressure air pipe. By the air condition unit, the combination of the units as well as the function of two-pipe heat pump air condition can be realized, and the common two-pipe heat pump air conditioner and the heat recovery type air conditioner capable of cooling and heating simultaneously are effectively combined.

The invention relates to a total run-out comprehensive measuring instrument, comprising a base part, a head frame part, a measuring slide plate mechanism, a measuring device, an axial measuring position changing mechanism, a radial measuring position changing mechanism, a control circuit and a computer. The right and the left ends on a base are respectively provided with the head frame part and a right tip device; the measuring slide plate mechanism capable of transversely moving is mounted on the middle of the base; a measuring slide plate transmission mechanism is mounted between the measuring slide plate mechanism and the base part; a measuring device is mounted on the measuring slide plate mechanism; the axial and radial measuring position changing mechanism is arranged on the measuring device; the sensing signal output terminal of the measuring device is sequentially connected with the control circuit, the computer and a stepping motor driving circuit; and the output terminal of the stepping motor driving circuit is connected with a head frame driving motor and a slide plate driving motor. The total run-out comprehensive measuring instrument combines mechanical control, data collection and data processing into a whole, and realizes automatic data collection and processing of shaft parts through computer control automation, thereby having convenient operation and control and higher energy efficiency ratio.

The invention relates to a simple, high-efficiency and reliable cold-warm air-conditioning water heater, which comprises a refrigerant loop, a hot-water condensing heat exchanger, a hot-water storing box and a signal acquisition and circuit control system. A scheme I of the invention is characterized in that: an exhaust opening of a compressor is connected with an air inlet of a three-way valve; a first air outlet of the three-way valve is connected with a refrigerant inlet of the hot-water condensing heat exchanger, and a second air outlet is connected and communicated with a first interfaceof a four-way valve and a refrigerant outlet of the hot-water condensing heat exchanger; a second interface, a third interface and a fourth interface of the four-way valve are respectively connected with the upper ports of an outdoor-wind heat exchanger and an indoor-wind heat exchanger and an air inlet of an air-liquid separator, and a capillary is connected in series between the lower ports of the outdoor-wind heat exchanger and the indoor-wind heat exchanger; an air outlet of the air-liquid separator is connected with an air inlet of the compressor; and an electromagnetic guide-valve low-voltage air-outlet pipe of the three-way valve is communicated with an air-sucking pipe of the compressor, and an electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with an exhaust pipe of the compressor. A scheme II of the invention is characterized in that: the hot-water condensing heat exchanger is added between the exhaust opening of the compressor of a refrigerant-circulating loop of a cold and warm air conditioner and an air inlet of the four-way valve, and the electromagnetic guide-valve high-voltage air-inlet pipe of the four-way valve is communicated with the exhaust pipe of the compressor; and the two technical schemes both have four functions of hot-water making and refrigerating, hot-water making, refrigerating and heating.

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 discloses an automatic clearing ship for rubbish on water and belongs to the technical field of cleaning the rubbish on the water. The ship comprises a ship body, a rubbish collection system and a rubbish transport system, wherein the rubbish collection system comprises a rubbish storage bin, a chain shaft, guide arms, an arresting barrier, chains and a collection basket; the rubbish transport system comprises a guide rail transmission stand and a lifting stand; the guide rail transmission stand consists of transverse guide rails and longitudinal guide rails by crossing; and the lifting stand comprises a hook, a sleeve, diagonal rods, a base, a vertical rod, a cross rod, a motor and a screw rod. The ship body is simple in structure, so that the structure of the complete ship is simplified on the basis of function addition, the operation cost and manufacturing cost are lowered greatly, the energy consumption is reduced correspondingly, the popularization and use of the clearing ship are facilitated, and the automatic clearing of the rubbish on the water can be achieved.

The invention discloses a defrosting control method and an air source heat pump system. The defrosting control method comprises the following steps that (1) the relative humidity phi of air at an airinlet of an evaporator is detected, and a temperature detection period T is determined according to the relative humidity phi of the air; (2) the air temperature Ts near a refrigerant inlet of the evaporator is detected by taking the temperature detection period T as a period, and a difference value of the air temperatures Ts detected at different two moments is calculated; and (3) a system entersa defrosting process if the temperature difference value in the step (2) is not less than a first set threshold, otherwise, the system runs a heating process. A defrosting judging mechanism of the defrosting control method is based on the growth characteristics and distribution rules of a frost layer in the frosting process of the evaporator, and the judgment is accurate, so that the phenomenon that a conventional double temperature sensor method frequently mistakenly defrosts in a cold and dry environment is avoided, and the energy efficiency ratio and the reliability of system running are greatly improved.

The invention discloses a 3D CNN acceleration method and system based on a Winograd algorithm. The method includes the steps of reading a feature map subblock to be transformed from an input feature map, and reading a convolution kernel subblock from a weight cache, performing the 3D Winograd algorithm on a feature map subblock Bin and the convolution kernel subblock to output results and accumulating output accumulation results, and determining whether all the input feature maps are read; if all the input feature maps are read, writing the accumulation results back to an output feature map cache Out. By extending the Winograd algorithm and using the Winograd algorithm for the 3D CNN calculation, a 2D algorithm is applied to perform CNN acceleration and achieve a good effect, the computational complexity of the CNN algorithm can be effectively reduced, and the computing performance and energy efficiency ratio of a 3D CNN accelerator based on an FPGA are improved.

The invention provides an energy-saving control system for a data center. The energy-saving control system comprises an indoor unit, a refrigeration cycle module and a controller. The refrigeration cycle module comprises equipment arranged on the indoor side, and the equipment comprises a liquid storage tank and a heat exchanger, wherein the liquid storage tank is connected with the indoor unit and used for storing refrigerants, and the heat exchanger is used for carrying out input and output heat exchange. The indoor unit, the liquid storage tank and the heat exchanger are connected through header pipes. The refrigeration cycle module comprises equipment arranged on the outdoor side, and the equipment comprises a first cooling water pump, a first electric three-way valve and a first condenser, wherein the first cooling water pump, the first electric three-way valve and the first condenser are sequentially connected and then connected into the heat exchanger. By fully utilizing natural cold sources and adopting an intelligent control mode, the series of problems that air conditioner energy consumption is high, indoor temperature and humidity control is difficult, cold sources cannot be backed up, and low-load dehumidification is difficult are solved, the effect that products in the data center normally and stably operate all year round is ensured, the energy efficiency ratio and reliability of an air conditioner system are improved, and the PUE value of a machine room is effectively decreased.

The invention discloses a computer simulation performance computation method of a refrigeration system under a frosting working condition. The computer simulation performance computation method comprises the following steps of respectively establishing a wet air physical property computing module, a coolant physical property computing module, a condenser structure computing module, an evaporator structure computing module and an evaporator frosting computing module; and establishing a refrigeration circulation system computing module. On the basis of simulating the variation of a frost layer of an evaporator, the variation of the whole refrigeration circulation operation situation is caused due to the variation of evaporation temperature. Through the computer simulation performance computation method disclosed by the invention, design can effectively avoid the system abnormal work risk due to frosting; simultaneously, effective geographic data is effectively provided for defrosting control of a refrigeration system, and the refrigerating output and the energy efficiency ratio of the refrigeration system are more effectively improved. Computing time is subjected to uniform step length partition firstly, and complex iteration computation is carried out on the structure and heat exchange parameter in a program by utilizing computer accessory appliances. The method in the invention realizes the dynamic simulation of a whole system under the frosting working condition.

The invention discloses a method and device for a deep learning system of a hybrid architecture. The method is characterized by comprising the steps in which, when a training data set is updated, a training module re-trains a deep learning network model and stores weights and offset parameters; a server side monitors changes in a parameter file while monitoring the process, encapsulates the changes into a pre-set data structure and notifies a reasoning module; the reasoning module interrupts a reasoning service, reads the weights and offset file content from the server side and updates the network model; and the server side monitors the process, meanwhile processes the input file that needs reasoning and notifies the reasoning module. The system device comprises a server module, a training module, a reasoning module and a bus interface. The training and reasoning hybrid CPU+GPU+CAPI heterogeneous deep learning system of the invention can make full use of resources, gain higher energy efficiency, and realize CAPI direct access to the server memory and real-time online iterations to update the weights and other parameters of the reasoning model.

This invention relates to a super low temperature heat pump air conditioner system which has good heating effect even under outdoor super low temperature working state. The system includes compressor, main throttling component, indoor external heat exchanger, gas-liquid separator, four-way valve and electromagnetic valve. Each part is connected through pipeline. The system also has a flash evaporator groupware. One outlet of the flash evaporator groupware connects to the air absorbing opening of compressor through pipeline. This invention uses enhanced air jet scroll compressor and steam spraying system. When heating under low temperature working state, the flash evaporator is used to spray refrigerant. It makes the compressor absorb more refrigerant. It fulfills quasi-double stages compression. The heating quantity and energy-efficiency ratio are increased. It can also keep low compression ratio and exhausting temperature. The air conditioner can work steady.

The invention discloses a solar-aided, air-source, trans-critical CO2 heat pump integrated air-conditioning system, belonging to the field of solar energy utilization and air conditioning technique, comprising CO2 heat pump (refrigerating) system, solar heat collecting system, indoor heat exchange system and outdoor heat exchange system, interconnected through three-way and four-way valves according system operation path. And for different weather conditions in the four seasons, it can adopt the five operating modes of heating, refrigeration, hot water, heating + hot water, and refrigeration + hot water, implementing hot water, cold and heat supply; besides, by adopting CO2 as heat pump (refrigeration) working medium, it has advantages of high efficiency, saving energy and environmental protection, compactness, and low operation cost.

The invention relates to a three-pipe heat recovery multi-connected machine, which comprises an outdoor machine and more than two indoor machines, wherein the outdoor machine and the indoor machines are connected by a high pressure liquid pipe, a low pressure air return pipe and a high pressure air pipe; the outdoor machine comprises a compressor, an outdoor heat exchanger, a four-way valve and athrottling device; the outdoor heat exchanger comprises a first outdoor heat exchanger and a second outdoor heat exchanger; the four-way valve comprises a first four-way valve, a second four-way valve and a third four-way valve; the throttling device comprises a first throttling device and a second throttling device; one end of the first outdoor heat exchanger is connected with a first connectionpipe of the first four-way valve, and the other end of the first outdoor heat exchanger is connected with the first throttling device; one end of the second outdoor heat exchanger is connected with afirst connection pipe of the second four-way valve, and the other end of the second outdoor heat exchanger is connected with one end of the second throttling device; and the other end of the first throttling device and the other end of the second throttling device are respectively connected with the high pressure liquid tube. The three-pipe heat recovery multi-connected machine provided by the invention has the characteristics of simple and reasonable structure and high energy efficiency ratio.

The invention discloses a method for controlling temperature / humidity of a multi-on-line air conditioning system and the multi-on-line air conditioning system; the method comprises the following steps: converging first refrigerating fluid input by the switching unit of an outdoor unit with second refrigerating fluid input by the third end of the outdoor unit, compressing refrigerating fluid through a shunting unit; shunting the refrigerating fluid; outputting the first refrigerating fluid and the second refrigerating fluid respectively; outputting the second refrigerating fluid output by the shunting unit to the first end of an indoor unit through the first end of the outdoor unit, wherein the second refrigerating fluid passes through a second condenser and a second evaporator of the indoor unit orderly and is flowed out of the third end of the indoor unit and is reflowed to the shunting unit through the third end of the outdoor unit; and switching to output the first refrigerating fluid output by the shunting unit and flowing the first refrigerating fluid through a first condenser and a first evaporator orderly, and flowing the first refrigerating fluid into the shunting unit. According to the invention, the operation energy efficiency ratio of the multi-on-line air conditioning system can also be increased.

An information channel and power combined self-configuration method for APs (Access Points) in wireless local area network comprises the steps as follows: the area where the APs to be configured are located is selected as a local network, and the local network is divided into a plurality of grids according to practical conditions; each AP sends out a self-configuration request to a server and simultaneously reports the position coordinate of the AP and the scanned frequency spectrum use information of the ambient environment of the AP; the server analyzes the positions and the ambient environments of the APs according to the self-configuration requests of the APs, and allocates information channels and power parameters to the APs to be configured in combination with the use conditions of AP information channels in neighbor cells under the premises of meeting the coverage rate requirement and minimizing same frequency interference, that is, first the signal energy of each grid is estimated according to a path loss empirical model to learn the network coverage condition, and then the information channel and the power parameter eventually configured for each AP is obtained through calculation based on the principle that the energy efficiency ratio is highest, and are sent to the AP to be configured. The method provided by the invention is quick and effective, guarantees the region coverage requirement, avoids same frequency interference to the maximum extent and guarantees that the energy efficiency ratio of the network is highest.

The invention discloses a split air-conditioner indoor unit, which comprises an upper shell arranged on the body. A heat exchanger, a cross flow wind wheel and an air duct for accommodating the heat exchanger and the cross flow wind wheel are arranged in the upper shell; the upper shell is provided with an air inlet and an air outlet which are communicated with the air duct, the air duct comprises a left air duct and a right air duct, the front of the upper shell is provided with a front panel, and a middle partition plate is arranged in the upper shell; the left air duct is encircled by the upper shell, the front panel, the middle partition plate and a left volute of a left cross flow wind wheel together; a left heat exchanger, the left cross flow wind wheel and a left volute tongue of the left cross flow wind wheel are arranged in the left air duct; the right air duct is encircled by the upper shell, the front panel, the middle partition plate and a right volute of a right cross flow wind wheel together; and a right heat exchanger, the right cross flow wind wheel and a right volute tongue of the right cross flow wind wheel are arranged in the right air duct. The split air-conditioner indoor unit has the characteristics of simple and reasonable structure, small integral volume, high energy efficiency ratio, flexible installation mode and wide application range.

The invention discloses a direct current varied-frequency air conditioner with a solar battery, comprising a solar battery, a direct current varied-frequency air conditioner, a solar power supply controller and a commercial power grid, wherein the solar power supply controller is connected between the solar battery and the direct current varied-frequency air conditioner; the varied-frequency air conditioner comprises an AC-DC rectifier and a AC varied-frequency air conditioner circuit; and the solar power supply controller comprises a DC-high-voltage DC inverter and a solar maximum output power point track (MPPT) control unit which is used for monitoring the output power of the solar battery, controlling the DC-high-voltage DC inverter to convert low-voltage direct current power output by the solar battery into high-voltage direct current and directly supplying power to a direct current varied-frequency air conditioner circuit. The commercial power grid is connected in parallel with the solar power supply controller through the AC-DC rectifier and directly supplies power to the direct current varied-frequency air conditioner circuit. The invention has the characteristics of low manufacturing cost, energy saving, environmental protection, reduction on the influence of environment, flexible operation, high energy-efficiency ratio and wide application range.

The invention discloses a household air conditioner with different capacities of fixed-speed double compressors and a control method thereof. The air conditioner comprises four parts, namely an indoor unit, an outdoor unit, an indoor control device and an outdoor control device. The indoor unit consists of an indoor heat exchanger, an indoor fan, two capillary pipes and four electromagnetic valves; the outdoor unit consists of different capacities of fixed-speed double compressors, a compressor current detection circuit, four electromagnetic valves, a four-way valve for changing the flowing direction of a refrigerant and a gas-liquid separator; and the communication between the indoor control device and the outdoor control device is performed in a power carrier mode. The control devices acquire the thermodynamic characteristics of a room where the air conditioner is arranged based on a statistical theory and a statistical method, dynamically modify a self-adjusting switching rule of the double compressors, improve the energy efficiency ratio of the air conditioner, and improve the comfort level of human bodies; and the control devices adopt a preset temperature upper / lower limit starting / stopping rule embedded with the self-adjusting switching rule of the double compressors to control the air conditioner, and the compressor current detection circuit ensures that a double compressor system structure has high availability.

The invention provides a self-cleaning efficient constant-humiture energy-saving central air conditioner which comprises a hollow air cabinet body, a blower, a cold water coil, a multistage air strainer, a PLC (programmable logic controller) and a dehumidification system. The air cabinet body is further provided with a fresh air hole. The outside of the air cabinet body is provided with a wet curtain precooler facing the fresh air hole and a water supply system. The wet curtain precooler is communicated with the inside of the air cabinet body through the fresh air hole. The water supply system comprises a water tank, a water pump inside the water tank, an adjusting valve and a return water pipe. The water pump is communicated with the wet curtain precooler. Two ends of the return water pipe are communicated with the wet curtain precooler and the water tank respectively. The bottom of the water tank is provided an electromagnetic valve drain outlet. The self-cleaning efficient constant-humiture energy-saving central air conditioner is simple in structure, low in energy consumption, low in water consumption, energy-saving, temperature-controllable, capable of humidifying and dehumidifying, and automatically cleanable.

The invention discloses a magnetic suspension multi-nose central air-conditioning load distribution system and a magnetic suspension multi-nose central air-conditioning load distribution method. The system comprises a starting unit, a calculation unit, a comparison unit, a loading unit and an unloading unit, wherein the starting unit is used for starting compressors; the calculation unit is used for calculating load requirements R of a plurality of compressors and total load R1 of the plurality of current compressors; the comparison unit is used for comparing the calculated load requirements R with the total load R1 of the plurality of current compressors; the loading unit is used for loading the compressors when the R is greater than the R1; and the unloading unit is used for unloading the compressors when the R is smaller than the R1. The method comprises the following steps of: starting the compressors; calculating the load requirements R of the plurality of compressors and the total load R1 of the plurality of current compressors; comparing the calculated load requirements R with the total load R1 of the plurality of current compressors; and loading or unloading the compressors according to the comparison result. The system and the method achieve optimal energy efficiency ratio and highest load distribution efficiency, improve the reliability of the whole machine control, achieve energy conservation and high efficiency, and realizes high energy efficiency ratio of unit control.

The invention relates to a method and device for generating mechanical reciprocating bistable-state motion by virtue of electromagnetism. The method is characterized by comprising the following steps: jointing two identical permanent magnets symmetrically on a motion component; placing the parts, adhered to the permanent magnets, of the motion component between two magnetic pole air gaps of an alternating magnetic field; sucking, shutting and repelling the permanent magnets on the motion component repeatedly by virtue of two magnetic poles by the alternating magnetic field so as to drive the motion component to perform reciprocating motion; and regulating the position and structure between the motion component and the two magnetic poles of the alternating magnetic field, thus the motion component can be enabled to perform reciprocating swing and reciprocating linear motion. The invention also provides the device for generating mechanical reciprocating bistable motion by virtue of electromagnetism; through exciting or rotating the permanent magnets by an alternating power source, the alternating magnetic filed is formed on a soft magnet; and the parts, to which the permanent magnets are attached, of a swinging rod and a pushing rod are placed in the magnetic air gaps of the soft magnet. According to the invention, the characteristics of the permanent magnets that the permanent magnets are stressed in the alternating magnetic field and the permanent magnetic tends to be stable once being sucked with the magnetic poles of the alternating magnetic field are utilized, the structure of the device is simplified, and the state is maintained to be stable without energy consumption.

The invention relates to a stepped refrigerating system for recovering oil gas, which comprises a primary refrigerating system, a secondary refrigerating system and a tertiary refrigerating system, wherein the primary refrigerating system is connected with the secondary refrigerating system connected with the tertiary refrigerating system. The invention has the benefits that a refrigerant in a hot steam manner is directly used for performing the phase change defrosting (hot freon defrosting), and the energy efficiency ratio is high. Since the hot freon defrosting is carried out in a heat exchanger, so that the heat transfer speed and the defrosting speed are high, the defrosting time of a primary oil gas condenser and a secondary oil gas condenser is within 15 minutes, and the defrosting time of a tertiary oil gas condenser can also be within 30 minutes. The defrosting time is saved greatly.

The invention discloses an efficient and energy-saving control algorithm for a variable frequency air conditioner. The efficient and energy-saving control algorithm comprises the following steps: detecting a difference value between a target condensation temperature and a current condensation temperature and a difference value between a target evaporation temperature and a current evaporation temperature; determining control logics of an electronic expansion valve and a compressor, an indoor draught fan and a draught fan of an outdoor unit; and controlling the operation of the air conditioner by taking the highest energy efficiency ratio as a target and taking the maximum energy efficiency ratio in unit time as a control target so as to realize the energy-saving aim, weaken the comfort level of a user and increase the energy efficiency ratio of the air conditioner.

The invention discloses a tobacco curing barn taking an air source heat pump as a heat source, which comprises a heating chamber with a fresh air opening, and a drying chamber with temperature and humidity probes. A dehumidifying opening is reserved above the curing barn. The tobacco curing barn further comprises the air source heat pump and a condenser fan. The ratio of the heat exchange area ofa condenser to the input power of a compressor is numerically 7 to 12 m<2> / kw. The condenser and the suction type air supply fan thereof are arranged in the heating chamber. The drying chamber and / orthe heating chamber are / is provided with a heat preservation layer. By taking the air source heat pump and solar energy as the novel heat sources, the tobacco curing barn of the invention has the characteristics of energy saving, normal and stable running of a system, high energy efficiency ratio, convenient operation, capability of providing hot air at relatively higher temperature and greatly expanding the application range of the air source heat pump and the solar energy, and positive role in saving energy sources and protecting the environment. Due to the large-scale popularization and utilization of the technology in tobacco production areas, the sulfur content of the air, soil and tobacco can be reduced and the quality of the tobacco can be improved.

The application discloses a method for controlling the operation of the compressors in an optimized VRV air conditioning system and a device thereof. The device includes the following steps: obtaining the rated output information and the rated power consumption information of the compressor in the VRV air conditioning system; obtaining the required output demand threshold value; and selecting the compressors and the operating frequencies, so that the total of the rated output of the selected compressors is no less than the output demand threshold value and the total of the rated power consumption of the selected compressors is the minimum. By utilizing the application, the actual operation energy efficiency ratio of the optimized VRV air conditioning system can be improved.