6023results about How to "Good energy saving effect" patented technology

In an electromagnetic switching device including a cylindrical part made of a magnetic material with a closed bottom for housing a movable iron core having a movable contact and so constructed as to render the movable contact movable toward and away from a fixed contact, a joint member made of a metallic material with an insertion hole formed substantially in the center thereof for movably receiving a movable shaft fixedly attached to the movable iron core, and a metal plate made of a non-magnetic material with a hole formed substantially in the center thereof with the inner diameter substantially the same as the inner diameter of the cylindrical part, the cylindrical part and the joint member are air-tightly jointed to each other with the metal plate provided therebetween, and the movable iron core is housed in the cylindrical part with a clearance defined between the movable iron core and the joint member corresponding to a required stroke within which the movable contact contacts the fixed contact. This arrangement provides improvement in magnetic efficiency of electromagnet of the device. Accordingly, improved energy saving performance is accomplished as compared with a case of a conventional electromagnetic switching device.

The invention discloses an air conditioner for controlling the thermal comfort feeling of a human body and a control method. The method comprises the following steps of: acquiring relevant parameters of the comfort level of the human body; according to the relevant parameters of the comfort level of the human body and in accordance with a preset PMV (Predicted Mean Vote) formula, acquiring a corresponding computed result of the thermal comfort feeling of the human body; according to the computed result, acquiring an optimal control strategy; and according to the optimal control strategy, controlling a relevant operating mode of the air conditioner so as to realize comfort control for the air conditioner. The invention has the advantages that the need for thermal comfort of the human body is met, simultaneously different indoor environmental parameters are selected for combination according to the activity level and the wearing condition of a person, and the operating energy consumption of the air conditioner is least, so that the energy-saving effect of the air conditioner is improved; and the operating method is simple and is easy to control.

The invention discloses a central air conditioner intelligent control system based on a wireless sensor network and a method, and belongs to the technical field of central air conditioner control. The central air conditioner intelligent control system comprises an intelligent information management center, wireless communication devices, a central air conditioner information monitoring and control module, a room information monitoring and control module and the like. The invention adopts the method that the central air conditioner intelligent control system is used to monitor information, build a data base, calculate current load of the system, and realize advance, accurate and optimized control of a central air conditioner system by combining a short-term loading forecasting method based on similar dates and fuzzy control technology, as well as taking the temperature variation of supply / return chilled / cooling water of a central air conditioner as the manipulated variable. The central air conditioner intelligent control system has the characteristics of great communication capacity, guaranteed communication quality, powerful network functions, wide monitoring range and extensive control quantity of the central air conditioner system, optimized control, high control accuracy, good energy saving effect and the like, and can be widely used in energy-saving optimizing control of various buildings, and is particularly suitable for energy-saving optimizing control of central air conditioners of intelligent buildings.

A car heat management system comprises a battery circulating loop, an air conditioner refrigeration loop and a heat management controller, the battery circulating loop comprises a first battery pipeline, a power battery, a battery heat radiator and a heat exchange assembly, and the power battery, the battery heat radiator and the heat exchange assembly are connected to the first battery pipeline. The heat exchange assembly is used for carrying out heat exchange between the battery circulating loop and an external loop. The air conditioner refrigeration loop comprises a first refrigeration pipeline, a second refrigeration pipeline, a fan, a compressor, a condenser and an evaporator, and the compressor, the condenser and the evaporator are connected to the first refrigeration pipeline. The second refrigeration pipeline is connected with the heat exchange assembly, the two ends of the second refrigeration pipeline are connected to the positions, at the two ends of the evaporator, of the first refrigeration pipeline, and the condenser and the battery heat radiator are arranged on the air outlet side of the fan. The heat management controller is used for selectively starting the fan or the compressor to cool the power battery according to the cooling need of the power battery and the environment temperature. The car heat management system is correlated and integrated with a car air conditioning system, the heat load of the air conditioning system can be balanced, and the energy saving effect is good. The invention further relates to a car.

The invention relates to an unmanned vehicle passing control system for traffic light intersections and an operating method thereof. The system comprises a signal emitting unit and an unmanned driving control device. The signal emitting unit is adaptive to transmitting lighting sequence information of traffic lights in a wireless manner; the unmanned driving control device is used for acquiring the current speed of the vehicle and the driving distance between the vehicle and a parking line of the intersection where the traffic light located and judging whether the vehicle can pass the intersection or not in the current speed according to the current speed, the driving distance and the received light sequence information so as to transmit a command of remaining the vehicle speed or braking command of decreasing the speed to brake at the intersection. The system is not only adaptive to unmanned vehicles but also benefits driven vehicles, whether a vehicle at the current position and speed can pass the front intersection with the traffic light can be judged accurately, and audio and image alarms are provided to a driver timely.

The invention provides a control scheme of a VAV (variable air volume) air-conditioning system. A neural network predictive control method is used for a tail end VAV-BOX and an air-conditioning unit, thus the hysteresis characteristic of a VAV system can be overcome, the control accuracy is improved, the resonance phenomena of an actuating mechanism can be greatly reduced, the energy-saving effect is improved by above 13%, and the control parameter tuning problem in the project is solved. A pressure independent cascade stage predictive control method is used for the tail end VAV-BOX, thus thecontrol accuracy can also be improved. The air-conditioning unit is provided with four control loops and can automatically select a static pressure control or total air volume control policy with adjustable setting static pressure by using an all-condition integrated control technology, thus the predictive control on a fan can be realized; the primary air volume of all the tail end VAV-BOXes can be detected and the air supply temperature can be adjusted according to the operation condition, thus the problem of too low temperature in partial air-conditioning area in the lowest fresh air operation is solved; the cascade stage predictive control method is adopted for a fresh air ratio control loop, thus the accurate control on the fresh air ratio can be realized and the energy-saving level can be further improved.

The invention discloses an electric pressure cooker achieving non-self-reset pressure relief. The electric pressure cooker achieving non-self-reset pressure relief structurally comprises an electric pressure cooker body, a housing, a base, an inner groove, a remote wifi receiver, a variable-frequency controller, a battery plate, a heat insulation plate, a heating plate, a temperature sensor, an aluminum alloy panel, an inner container, a protective cover and an air escape valve, wherein the housing is arranged on the electric pressure cooker body, the base is arranged below the housing, the inner groove is formed in the surface of the base, the inner groove is fixedly connected with the housing through the base, and the remote wifi receiver is arranged in the inner groove. By arranging theremote wifi receiver, the variable-frequency controller and the battery plate, the heating plate behind the heat insulation plate can be remotely opened, the movable plate can be opened by utilizingthe impact force of pressure and arranging the movable plate on the surface of the air escape valve under the situation of too high air pressure, the heat insulation effect of an inner container coreis ensured by arranging a vacuum interlayer with medical stones, and the electric pressure cooker is simple in structure and easy to achieve.

The present invention discloses an underwater cleaning robot. The robot can work in the mode of remote and self-control and comprises a drainage mechanism, a cleaning and mobile platform as well as a control system. With the configuration and division of the drainage mechanism, the cleaning and mobile platform as well as the control system, the robot can undergo cleaning work autonomously or by remote control under water, on horizontal plane, vertical plane as well as tilt plane. The present invention has the characteristics of light weight, large capacity, compact and reasonable mechanical structure as well as good practicality, stability, energy saving, economy and generality, etc, and is the robot which can be used for underwater cleaning for the bottom of swimming pool and the pool wall.

The invention relates to a heavy oil lightening method and technique. The method comprises steps as follows: raw oil is introduced into a thermal cracking reactor through a feed system, and mixed with a high-temperature solid heat carrier from a combustion (gasifying) reactor, so that the raw oil is subjected to fluidizing heat exchange with the solid heat carrier and carries out thermal cracking reaction on the surface of the solid heat carrier; the cracking gas generated by the thermal cracking reaction and a light component product are subjected to steam stripping by fluidizing medium gas and enter a subsequent absorption and stabilization system and a purification and separation system, heavy coke (petroleum coke) is attached to the surface of the solid heat carrier and enters the combustion (gasifying) reactor via a material returning valve, and an oxidizing (gasifying) and fluidizing gas is introduced to realize combustion (gasifying) reaction in the fluidization elevation process of the petroleum coke; and after the reaction product (fume or gasified gas) and the solid heat carrier are separated by a gas-solid separator, the fume (gasified gas) is led into a waste heat recovery system and a gas purification system, the high-temperature solid heat carrier is distributed by a distribution valve and respectively enters the thermal cracking reactor and the combustion (gasifying) reactor for cyclic use, and the collected fly ash can be used after further processing, thereby complete high-value conversion and use of the heavy oil.

The invention discloses a latent heat recoverable multi-phase change sludge drying method and a latent heat recoverable multi-phase change sludge drying device, which are designed for solving the technical problems that the energy consumption is high, the latent heat of the sludge vapor cannot be recovered and reused, the dried tail gas pollutes the environment, the operating cost is high and the like in the conventional sludge drying technology. Due to the combination of a low-temperature vapor turntable dryer, a sludge waste vapor latent heat recover heat pump and a tail gas purification device, and the use of indirect phase change heat exchange for low-temperature vapor, the heat exchange is improved, and the loss of organic components of the sludge is low. The latent heat of the sludge drying tail gas is recovered by using the latent heat recover heat pump, and the recovered heat energy is reused for sludge drying. Therefore, the heat efficiency is improved, the operating cost is reduced, and the problems that the heat utilization ratio is low, the operating cost is high and the like in the sludge drying process are better solved. The dried products meet the requirement of baking light and energy-saving bricks and producing cement laminated products, and over 90 percent of heat value of the original sludge is maintained. Therefore, the resource utilization value of the sludge is maximized.

The invention belongs to the technical field of street lamp illumination, and in particular mainly relates to a street lamp energy-saving and managing system based on internet of things. The system mainly consists of a main monitoring center, a remote terminal unit (RTU) and wireless sensor nodes, wherein the wireless sensor node which is responsible for detecting and controlling single lamp street to operate and executing a lamping switching-on and switching-off operation by receiving an instruction sent by the RTU is arranged on each street lamp, the wireless sensor nodes are connected with the RTU through a GPRS (General Packet Radio Service) module, and the RTU arranged at a transformer workstation is respectively connected with the main monitoring center, a server and a display device through Internet. The street lamp energy-saving and managing system disclosed by the invention can realize illumination as required, high efficiency and energy saving and fine management, solves the problems generally existing in the current street lamp monitoring management system and has the advantages of wide application range and suitability for popularization.

The invention belongs to the technical field of urban railway vehicle control, and relates to an urban railway vehicle braking force management method distributing braking force based on TCMS. According to the management method, electric braking force is used preferably, air braking serves as the supplementary for insufficient braking force, electric braking is in real-time coordinated matching with air braking, air braking is not used under the situation that the electric braking capability is enough, and the purposes that energy is fed back to a power grid to the maximum degree, and abrasion of a shoe is greatly reduced are achieved. When the electric braking capability is not enough, the air braking is preferably supplemented to a trailer and a motor vehicle with the electric braking fault, and after the maximum adhesion is reached, the purposes that the air braking is averagely supplemented on the motor vehicle with the normal electric braking, the average distribution of braking force for all vehicles is achieved, the interaction force among the vehicles is reduced, and the service life of the vehicles is prolonged are achieved. In the braking process and the starting process, the applying of the braking force is linearly controlled according to the whole vehicle impulsion limiting requirement, the vehicle impulsion is reduced, and conversion among traction force, electric braking and air braking is smooth.

An energy-saving control device of air-conditioning based on vision of omnibearing computer is prepared for utilizing an omnibearing vision transducer to obtain overall view video image of indoor, identifying out number of person in room by microprocessor based on identification of indoor omnibearing video image and carrying out duty ration control on outdoor unit of air-conditioning according number of person in room for realizing to supply air according to requirement.

The invention relates to a system for intelligently monitoring and controlling crop pests and diseases. The system is characterized by comprising a monitoring computer and a pesticide spraying device which is arranged in a crop growing place, wherein the monitoring computer drives the pesticide spraying device which is connected with the monitoring computer; a time controller and a pesticide spraying selective driving module are arranged in the monitoring computer; and the time controller controls and starts a corresponding spray head of the pesticide spraying device through the pesticide spraying selective driving module. The system has the following advantages that: 1, intelligentization is realized, the degree of automation is high, the control modes are diversified, the control is performed in time, and the using effect is good; 2, the solar energy is used as a power supply of monitoring equipment, so that the energy-saving effect is good; 3, the monitoring equipment not only can automatically control the water supply or the pesticide spraying of cultivated crops, but also has a multi-aspect management and control ability of controlling pests and diseases of the crops in different areas of the same place; and 4, the health condition of the crops is monitored in real time by using a monitoring probe, so that the crop pests and diseases are pre-warned in time and are controlled appropriately. Therefore, the system is not only favorable for ensuring the growth of the crops and the production bumper harvest of agriculture, forestry and tea industry, but also can greatly reduce medicament waste and pesticide pollution.

An apparatus and method for displaying the status of a current display power management signaling (DPMS) mode in a display device uses an on-screen display (OSD) circuit. The current DPMS mode is determined based on an input status of video sync signals and the connection of a signal cable. The current DPMS mode status data is stored in an internal memory of a microcomputer. The OSD circuit is driven using an OSD drive signal output from the microcomputer, so that a message indicative of the stored status data can be momentarily displayed on the display device. In a DPMS mode, any front panel key acts as a program interrupt for DPMS mode operation, which, upon activation, initiates a sequence whereby the DPMS mode is set to normal, horizontal and vertical sync signals are generated, the stored DPMS mode status data is read, and an OSD drive signal is generated. After a time sufficient for user recognition of the current DPMS mode, the OSD drive signal is discontinued and the DPMS mode is reset.

The invention discloses a linkage energy-saving control system for an air conditioning system. An air and water linkage intelligent controller automatically adjusts an air and water linkage energy-saving control device according to working condition parameters. A cooling water pump and chilled water pump intelligent controller automatically adjusts the operation frequencies and the numbers of cooling water pumps and chilled water pumps according to the working condition parameters. A cooling tower and refrigerating host intelligent controller automatically adjusts the number of operated cooling tower draught fans and operated refrigerating hosts according to the working condition parameters. An air conditioner tail-end intelligent controller adjusts the opening degrees of air supply branch pipe tail-end air valves and chilled water proportion regulating valves and the operation frequencies of air feeders respectively through an air supply branch pipe tail-end air valve, chilled water proportion regulating valve and air feeder energy-saving controller according to the working condition parameters. The invention further discloses a linkage energy-saving control method for the air conditioning system. The linkage energy-saving control system is automatically matched with the energy-saving working condition parameters according with the current system, electric equipment and the controllers in the air conditioning system are adjusted, the air conditioning system runs at the best efficiency, and the purpose of reducing the total energy consumption of the system is achieved.

The invention discloses a control device used for a centralized air processing system, which comprises a plurality of frequency converters, a plurality of actuators, a plurality of sensors, and a controller, wherein the frequency converters are connected with a plurality of fans respectively, and used for controlling rotation frequencies of the corresponding fans to adjust the generated air volume; the actuators are connected with a plurality of air valves and a water valve of a surface air cooler respectively, and used for controlling the air valves and the water valve to accomplish adjustment on the conveying or discharge air volume; the sensors are arranged on a plurality of air pipes and a freezing water pipe of the surface air cooler respectively, and used for collecting a temperature and a concentration of indoor CO2; and the controller is used for processing sensor data, generating a signal to control the frequency converters and the actuators to adjust the fans, the air valves and the water valve, accomplishing coordination among air supply, air return, fresh air and air discharge, and achieving indoor air treatment. The control device utilizes humiture and CO2 concentration measurement signals and adopts an integral control mode to accomplish temperature control of an air conditioning system and indoor hot comfort control, and the anti-interference capability and an energy-saving effect are improved.

The invention discloses an LED straight-tube lamp comprising a lamp tube, a lamp cap, a power source and a lamp panel, wherein the lamp cap is arranged at one end of the lamp tube; the power source is arranged in the lamp cap; the lamp panel is arranged in the lamp tube and is provided with a light source; the light source is electrically communicated with the power source through the lamp panel; and the lamp panel is a flexible circuit board of which the end part is provided with a light source pad, and holes are formed in the light source pad. The flexible circuit board is directly welded at the power output end of the lamp cap, so that the quality problem caused by conducting wire migration breakage generated by a wire bonding way in the production, transportation and use processes can be avoided.

The present invention relates to a method for achieve automatic driving curve generation between stations during operation by an automatic train driving system. The method comprises that: the system real timely acquires operation information of an automatic train monitoring system, train parameter information and track information of a track database; the driving curve information at each operation stage between the stations is real timely and adaptively calculated; the key point information at each operation stage between the stations is extracted and recorded according to the driving curve information; the best automatic driving curve of the train between the stations during the operation is real timely generated. With adopting the method for achieve the automatic driving curve generation between the stations during the operation by the automatic train driving system, a plurality of disadvantages of the train in the automatic driving process are effectively overcome; the advantages of higher comfort, good energy saving effect, high parking precision, easy adjustment, stable and reliable work performance, and wide application range are provided; the purposes of punctual operation, energy saving operation, high comfort operation, safe and smooth operation of the train are achieved, and the operation requirements of the CBTC system are completely met.

The present invention provides an air conditioner control system and method, the outlet of the air conditioner control system movable sets an air ducting, the air ducting is driven by winding motor, the winding motor is electrically connected to the winding control unit in the inner controller, the air conditioner control system further includes an image identity module, the image identity module is electrically connected to the inner controller. The air conditioner controlling method includes following steps: a. initializing air conditioner; b. transferring image identity module, judging object position; c. storaging or transferring object position; d. adjusting direction of air ducting in the outlet according to the object position. The air conditioner control system and method of the invention can automatic adjust outlet direction of the air conditioner according to the object position, has a high degree of automation, better capacity of saving energy, and high sensing precision of the image identity module, less mulfunction.

The invention discloses a self-heat-insulating concrete building block, belonging to the field of building materials and used for masoning a heat-insulating wall body. The self-heat-insulating concrete building block is characterized in that heat-insulating through holes are distributed on a slurry paving surface, two ends of the self-heating-insulating concrete building block are respectively provided with one heat-insulating groove, heat-insulating materials are inserted into the heat-insulating through holes and the heat-insulating grooves, so that no cold bridges exist on the building block, and the energy saving effect of the masoned heat-insulating wall body can be obviously increased.

The invention provides a multifunctional intelligent window. The intelligent window comprises a window frame, an upper suspended window body accommodated in the window frame, a shutter fixed on one inward side of the window frame and a transmission mechanism for adjusting the states of the upper suspended window body and the shutter; the intelligent window also comprises an outdoor environment detector, an indoor environment detector and a control system; the outdoor environment detector and the indoor environment detector are electrically connected with the control system; and the control system adjusts the states of the upper suspended window body and the shutter through the transmission mechanism. The intelligent window has the advantage of more reasonable structural design. The upper suspended window body, the shutter and the execution mechanism of the multifunctional intelligent window are relatively independent, but the signal and the control mode for controlling the intelligent window by the control system are integral, namely the upper suspended window body and the shutter are designed to be independently used in a remote control operating mode and also can be used as a whole for realizing all intelligent functions in a self-control mode.

The invention relates to a load forecast and control system and method for a metro heat ventilation and air-conditioning system. In one respect, the load forecast and control system for the metro ventilation and air-conditioning system is provided. The system comprises a basic database, a sensing system, a load forecast part and a controller. The basic database stores historical data. The sensing system provides measured data. The load forecast part works out the forecast load value of the metro heat ventilation and air-conditioning system based on the historical data and the measured data and transmits the forecast load value to the controller. The controller gives out a control command to control operation of the metro heat ventilation and air-conditioning system based on the forecast load value. The historical data and the measured data comprise strong time-variable data. According to the load forecast and control system, the problems that according to traditional load forecast, the precision is poor, and control over the air-conditioning system is not ideal enough are solved; and the load forecast and control system and method have the advantages that initial investment is reduced, operation is reliable, the energy saving effect of the heat ventilation and air-conditioning system is improved, stored data of the database are reduced, a load forecast model is simple, and the practicability is high.

The invention discloses a combined cold supply system of cooling towers and a water cooling unit, comprising a refrigeration unit, a heat exchanger, a plurality of cooling towers, a temperature detection device and a control device, wherein the refrigeration unit is used for supplying frozen water for an air conditioner end system; the heat exchanger is used for supplying cooling water for the airconditioner end system; the cooling towers are used for selectively supplying the cooling water for the heat exchanger and the refrigeration unit; the temperature detection device is at least used for detecting the water outlet temperature of the cooling towers and / or the temperature of the cooling water of the heat exchanger and the demand temperature and the water return temperature of the cooling water of the air conditioner end system; and the control device is used for controlling the cooling water of the cooling towers and simultaneously or individually supplying the cooling water for the heat exchanger and the refrigeration unit according to the relationship among all temperatures detected by the temperature detection device. The invention also discloses a control method of the combined cold supply system of the cooling towers and the water cooling unit. A combined cold supply mode of the cooling towers and the water cooling unit is adopted, and therefore, the combined cold supply system has the advantages of higher utilization ratio of the cold supply energy quantity of the cooling towers, longer cold supply time and better energy saving effect.

In an electromagnetic switching device including a cylindrical part made of a magnetic material with a closed bottom for housing a movable iron core having a movable contact and so constructed as to render the movable contact movable toward and away from a fixed contact, a joint member made of a metallic material with an insertion hole formed substantially in the center thereof for movably receiving a movable shaft fixedly attached to the movable iron core, and a metal plate made of a non-magnetic material with a hole formed substantially in the center thereof with the inner diameter substantially the same as the inner diameter of the cylindrical part, the cylindrical part and the joint member are air-tightly jointed to each other with the metal plate provided therebetween, and the movable iron core is housed in the cylindrical part with a clearance defined between the movable iron core and the joint member corresponding to a required stroke within which the movable contact contacts the fixed contact. This arrangement provides improvement in magnetic efficiency of electromagnet of the device. Accordingly, improved energy saving performance is accomplished as compared with a case of a conventional electromagnetic switching device.

The invention discloses a light-weight electric automobile. The light-weight electric automobile is characterized in that: an automobile body cover member of the electric automobile is made of a high-intensity compound material; an automobile body framework has a high-intensity aluminum alloy space structure; and the automobile body cover member is connected with the automobile body framework through a high-molecule adhesive. The automobile body cover member and the automobile body framework of the whole automobile are made of whole new materials; compared with the weight of a whole steel pure electric automobile in the same type, the weight of the whole automobile having the light-weight design is reduced by 40 to 45 percent, so an aim of light-weight design is fulfilled to the maximum extent, and the investment cost of an automobile body die is low; by adopting an advanced adhering process, the investment cost of welding equipment can be reduced, and the intensity of the whole automobile body can be enhanced. A very good energy-saving effect is achieved, and the continuation running mileage of the whole automobile is increased.

The invention discloses a waste heat recovery device of an air compressor and a control method of the waste heat recovery device. The waste heat recovery device comprises heat exchanging modules and enhanced heat exchanging modules, wherein the heat exchanging modules are arranged in parallel at the two ends of an oil-channel electric valve; the reinforcing heat exchanging modules are arranged in parallel at the two ends of the air-channel electric valve; the heat exchanging modules and the reinforcing heat exchanging modules are utilized to recover and store the heat energy in circulating oil and the heat energy in compressed air lost and wasted when the air compressor operates; the heat energy of the compressed air can be recycled at highest efficiency under the premise that the operation of the air compressor is not impacted. According to the waste heat recovery device of the air compressor and the control method of the waste heat recovery device, the collected data are analyzed and operated so as to realized effective high intelligent control; not only is the efficiency of the operation of the air compressor improved, but also the energy input of the heat energy utilizing modules can be reduced, the energy consumption or fuels for heating are lowered, and energy comprehensive utilizing degree is improved. Therefore, the waste heat recovery device has the advantages that the energy-saving effect is good, the intelligent degree is high, and the stability is excellent.

Belonging to the technical field of heat storage and transfer, the invention provides a ternary nitric acid nano-molten salt heat transfer and storage medium, a preparation method and application thereof. The ternary nitric acid nano-molten salt heat transfer and storage medium contains a ternary nitric acid molten salt system formed by potassium nitrate, sodium nitrate and sodium nitrite. The ternary nitric acid nano-molten salt heat transfer and storage medium is characterized in that it also includes metal oxide nanoparticles and / or non-metal oxide nanoparticles. The nanoparticles are dispersed into the ternary nitric acid molten salt system to undergo compounding so as to form the ternary nitric acid nano-molten salt heat transfer and storage medium. The ternary nitric acid nano-molten salt involved in the invention has a low melting point, an upper limit use temperature up to 600DEG C, good thermal stability, and high heat conductivity, thus being very suitable for the heat storage and transfer system of industrial energy storage and solar-thermal power generation.

The cooling-heating air-conditioning hot water three-purpose machine is characterized by that on the original air-conditioner a countercurrent water-cooling heat exchanger and a three-way two-position reversing electromagnetic valve formed from electromagnetic auxiliary valve and pneuamtic main valve are added, and two energy-saving water-heating control modes of refrigeration mode and heating mode are increased, and a double-loop two-way throttle mechanism also can be adopted or the spiral coil tube-in-tube water-cooling heat-exchanger can be pdlaced in the hot water storage tank, so that said invented three-purpose machine can be used throughout the year, and possesses several functions of refrigeration, heating and providing cold and hot water.