50results about How to "Improve energy efficiency rating" patented technology

The present invention relates to a method for learning power on / off control data sent by a remote controller, and simultaneously controlling commercial power (main Power supply), thereby cutting off the standby power cut-off device and control method of the standby power generated on the electrical product. The standby power cut-off device of the present invention includes: a voltage conversion unit, which is used to convert a commercial power supply into a DC power supply; a charging and discharging unit, which is charged with the DC power supplied by the voltage conversion unit, and supplied as an operating power supply; A detection unit for detecting the charging level of the charging and discharging unit; a receiver for receiving power on / off control data of the remote controller; a control unit for turning on / off the power of the remote controller The control data is used to control the cut-off of the standby power of the designated electrical product; the first switch is used to perform on / off switching operation according to the control of the control unit to allow or cut off the commercial power supplied to the electrical product; According to the control of the control unit, the power on control data of the electric product is sent; the second switch performs on / off switching operation according to the control of the control unit to allow or disconnect the commercial power supplied to the voltage conversion unit.

The invention provides an air conditioning system which comprises a four-way valve, a compressor, an outdoor heat exchanger, an indoor heat exchanger, a throttle mechanism and a defrosting access, wherein the defrosting access comprises an electronic device, a microchannel heat exchanger, a first electromagnetic valve and a second electromagnetic valve. When the air conditioning system is in a defrosting mode, the compressor doesn't shut down, the four-way valve isn't reversed, and an indoor fan still blows hot air; the first electromagnetic valve is switched on, the second electromagnetic valve is switched off, a refrigerant in the throttle mechanism flows into the microchannel heat exchanger to absorb heat generated by heating of an outdoor electronic device, enters the outdoor heat exchanger for defrosting the outdoor heat exchanger to release heat and enters an air return interface of the compressor, a circulation is completed, and the defrosting is finished in a heating mode. According to the provided air conditioning system, the compressor is not required to shut down and the four-way valve is not required to be reversed during defrosting, the working reliability is high, the influence on working of a power grid is low, the comfort of air supply of an air conditioner is good, the defrosting time is short, and the energy consumption is low.

The invention discloses a double-cylinder two-stage compressor and an air conditioner system. The double-cylinder two-stage compressor comprises an air cylinder, a lower flange, a lower flange cover plate, a transfiguration pin, a transfiguration spring, a first sliding piece, a second sliding piece and a filter. The air cylinder is sequentially provided with a first sliding piece groove, a first exhaust opening, a second sliding piece groove and a second exhaust opening communicated with the second sliding piece groove in the peripheral direction. The lower flange is provided with a pin hole and a pressure switching hole. The lower flange cover plate is provided with a gas communication groove for communicating the pin hole and the pressure switching hole. The transfiguration pin is arranged in the pin hole. The transfiguration spring is connected with the lower flange cover plate and the transfiguration pin. The first sliding piece is arranged in the first sliding piece groove. The second sliding piece is arranged in the second sliding piece groove and is provided with a positioning groove for positioning the transfiguration pin and an exhaust matching groove communicated with the second exhaust opening. An outlet of the filter is communicated with the pressure switching hole, a first inlet of the filter is communicated with a flash evaporator air outlet through a first solenoid valve, and a second inlet is communicated with an exhaust pipe through a second solenoid valve. The double-cylinder two-stage compressor achieves switching between larger discharge amount and smaller discharge amount by changing the exhaust opening, and the application range is broadened.

The invention provides a washing and drying combined machine and a control method thereof. The washing and drying combined machine comprises a washing subsystem and a drying subsystem, wherein the washing subsystem is provided with a first wireless communication module and is used for washing clothes, detecting related information of the washed clothes and transmitting the related information of the washed clothes through the first wireless communication system; the drying subsystem is provided with a second wireless communication module and is used for receiving the related information of the washed clothes transmitted by the first wireless communication module through a second wireless communication module and setting parameters according to the related information of the washed clothes to dry the washed clothes. According to the washing and drying combined machine and the control method thereof, the interaction between the washing subsystem and the drying subsystem, for example, a washing machine and a drying machine, can be realized, the time used for drying the clothes can be properly shortened, and the energy efficiency grade of the drying subsystem is improved.

The invention provides a refrigerator refrigeration circulation system. The refrigerator refrigeration circulation system comprises a compressor, a condenser, an evaporator and a capillary pipe, wherein the compressor is connected with the condenser; the capillary pipe is connected with the evaporator; the refrigerator refrigeration circulation system is further provided with a heat regenerator and a supercooling liquid accumulator; the heat regenerator is provided with a high-pressure refrigerant inlet, a high-pressure refrigerant outlet, a low-pressure refrigerant inlet and a low-pressure refrigerant outlet; the supercooling liquid accumulator is provided with a supercooling refrigerant liquid inlet, a supercooling refrigerant liquid outlet, a two-phase refrigerant inlet and a saturated refrigerant vapor outlet; the outlet of the condenser is connected with the high-pressure refrigerant inlet of the heat regenerator; the high-pressure refrigerant outlet is connected with the supercooling refrigerant liquid inlet formed in the supercooling liquid accumulator; the high-pressure refrigerant outlet is connected with the inlet of the evaporator through the capillary pipe; the outlet of the evaporator is connected with the two-phase refrigerant inlet; the saturated refrigerant vapor outlet is connected with the low-pressure refrigerant inlet; and the low-pressure refrigerant outlet is connected with the compressor. By adopting the refrigerator refrigeration circulation system, two-phase heat exchange during the whole evaporation process of the evaporator can be ensured; the heat exchange coefficient of the evaporator is obviously increased; and the heat exchange effect is improved.

Provided are a rapidly synthesized polishing-free cordierite ceramic sheet for a microwave oven and a production method of the rapidly synthesized polishing-free cordierite ceramic sheet. The production method comprises the following steps: basic materials including 35-55% of mullite, 15-35% of attaclay, 10-25% of black soil, 0-10% of cordierite, 0-10% of petalite, 0-5% of kaolin, 0-2% of calcium carbonate, 0-2% of potassium feldspar and 0-10% of Al2O3 are prepared according to weight ratio, the additives are polyvinyl alcohol (PVA) and sodium humate, the above all powdery basic materials are subjected to ball-milling to be crushed, the two additives are added into the basic material and are subjected to proper ball-milling to be fully mixed, then the basic materials and the additives are screened through a screen with 200-400 meshes, the iron in the basic materials and the additives is attracted, then the basic materials and the additives are sprayed with mist, dried to make powder, mechanical pressed, applied with glaze, and rapidly sintered at the intermediate temperature of 1220-1300 DEG C to make the product. According to the invention, the raw ores of mullite and attaclay are used to make the sheet, so that the cost of raw materials is greatly lowered, the glaze can be co-fired at one time, and the cordierite crystalline phase is rapidly synthesized by taking advantages of lattice imperfection of various raw mineral materials. The sheet can be pressed very thin and flat so as to avoid polishing.

The invention provides a backlight module circuit, which is applied to a liquid crystal display. The backlight module circuit comprises a plurality of subarea backlight units and a control unit, wherein each subarea backlight unit comprises a first string of light emitting diodes and a second string of light emitting diodes; the first strings of light emitting diodes and the second strings of light emitting diodes are connected to the control unit in a parallel mode; by virtue of the control unit, the first strings of light emitting diodes or the second strings of light emitting diodes are selectively lightened, wherein when the first strings of light emitting diodes are lightened, brightness of the first strings of light emitting diodes is the first brightness; when the second strings of light emitting diodes are lightened, brightness of the second strings of light emitting diodes is the second brightness; and the first brightness is greater than the second brightness. With the application of the backlight module circuit provided by the invention, the purposes of reducing power consumption and improving an energy efficiency grade of the liquid crystal display are achieved.

The invention provides a high-quality air compression treatment system. The high-quality air compression treatment system comprises a box body, wherein an air filter element, a double-stage variable frequency air compressor, a coarse filter, a rear cooling system, a precise filter, a cold dryer, an ultra-precision filter and an air treatment host are sequentially connected into the box body. Air filters large-particle impurities by the air filter element, and enters the double-stage variable frequency air compressor to obtain compressed air; the compressed air passes through the coarse filter,and solid or liquid particles with the concentration of more than 3 microns in the compressed air are filtered out; after the compressed air passes through a cooling system and the precision filter,solid or liquid particles larger than 0.01 microns and 99.99% of oil mist are filtered; after the compressed air passes through the cold dryer and the ultra-precision filter, solid or liquid particleslarger than 0.01 microns and 99.99% of oil mist are filtered out; and finally, after the compressed air is treated by a molecular sieve adsorber in the air treatment host, the first-stage standard compressed air is reached.

The invention discloses a washing box component of a washing machine. The washing box component of the washing machine comprises a washing box body, wherein the washing box body is provided with at least two water inlet valves connected with a water inlet pipe; a turbo type mechanism is arranged in the washing box body; the water inlet valves are alternately opened or closed, or different quantities of water is introduced into the turbo type mechanism to enable the turbo type mechanism to rotate along a clockwise or anticlockwise direction; through the high-speed impact of the water feeding of the water valve, a turbo can repeatedly act and rotate in the washing box, and therefore, detergent is fully stirred to realize the full solving of the detergent. The washing machine with the washing box component has the advantages of high washing ratio, high energy level and good user use experience, and the detergent is difficult in causing pollution and residues.

The invention discloses an air conditioner control method. The air conditioner control method comprises the following steps that the outdoor environment temperature and operating parameters of an air conditioner are obtained, and the operating parameters comprise at least one of the shutdown duration and the exhaust temperature; a first duration and / or a first temperature are / is determined according to the outdoor environment temperature; and when it is judged that the exhaust temperature is lower than the first temperature and / or the shutdown duration is longer than the first duration, the air conditioner is controlled to preheat a compressor. The invention further discloses the air conditioner and a computer readable storage medium, and the effect of avoiding the situation that the air conditioner cannot be started in an extreme environment is achieved.

The invention provides a rotary type compressor and a gas-liquid separator thereof. According to the invention, the gas-liquid separator comprises a liquid separator cylinder body, and an air suction pipe, an air exhaust pipe and a connecting pipe which are respectively and fixedly connected with the liquid separator cylinder body, wherein a first end of the connecting pipe is communicated with acavity of a lower flange which is connected with an air exhaust side of a low-pressure compressive structure of the rotary type compressor and penetrates in the liquid separator cylinder body, and a second end of the connecting pipe penetrates out the liquid separator cylinder body and is communicated with an air suction cavity of a high-pressure compressive structure of the rotary compressor. According to the invention, the rotary type compressor comprises the low-pressure compressive structure, the high-pressure compressive structure and the compressor cylinder body, and the rotary type compressor also comprises the gas-liquid separator, wherein the gas-liquid separator is installed on the outside of the compressor cylinder body. The gas compressed by the low-pressure compressive structure can be exhausted and flows in the high-pressure compressive structure by the connecting pipe, and the gas flowing through the connecting pipe can generate heat exchange with the gas-liquid separator when passing through the connecting pipe and meanwhile the temperature of the gas can be lowered, thus the performance and reliability of the compressor can be improved.

The invention provides a charging device. The device comprises an AC-DC conversion module, a Type-c interface module and a microcontroller, wherein the AC-DC module is used for converting an input ACpower supply into direct current to output; the Type-c interface module provides a Type-c interface used for accessing external equipment; the microcontroller is used for confirming the real-time charging requirement of the external equipment when accessing the external equipment by the Type-c interface and transmitting an output voltage control signal according to the real-time charging requirement; and the AC-DC conversion module includes an output voltage regulating circuit, and the output voltage regulating circuit receives the output voltage control signal and regulating the direct current voltage outputted by the AC-DC conversion module into a target voltage. According to the charging device, the conversion efficiency of the AC-DC conversion module is effectively improved, and thus the charging efficiency and the energy efficiency grade of the charging device are improved.

The invention discloses a waste heat utilization device of a slag cooler of a circulating fluidized bed heating unit. There is a heating network return water branch pipeline connected in parallel, and the heating network return water branch pipeline is connected with the slag cooler as a pipe for cooling water to enter the slag cooler, and the cooling water and the main road heat after the slag cooler absorbs heat The network return water is merged into one road to connect with the water inlet of the heating network heater. The heating network heater is connected to the four-exhaust steam extraction pipeline, and the temperature of the heating network return water is raised by heating and extraction, and the output of the heating network heater is The water outlet is connected to the water inlet pipe of the heating network through the pipeline, and the return water of the heating network reaches the temperature required for heating and is sent to the heat user. The invention has good heat recovery effect and good economy, the unit can generate more power, and the peak-shaving capability of the unit is improved.

The invention discloses a mobile air conditioner and an energy-saving control method and a device thereof. The mobile air conditioner comprises a condenser, an exhaust motor for exhausting air in the condenser outdoors, and an atomization motor for atomizing condensed water. The energy-saving control method comprises the following steps: when the mobile air conditioner is started to operate in a refrigeration mode, the exhaust motor is controlled to operate at a first rotating speed, and the atomization motor is controlled to operate at a second rotating speed; when the operation time of the mobile air conditioner reaches a first preset time, the environmental temperature and the environmental humidity of the environment of the mobile air conditioner are detected; and the rotating speeds of the exhaust motor and the atomization motor are adjusted according to the environmental temperature and the environmental humidity. The method can greatly reduce the power consumption of the mobile air conditioner to improve the energy grade of the mobile air conditioner.

The embodiment of the invention discloses a wind power device, and belongs to the technical field of air conditioner energy conservation. The wind power device comprises an impeller, a generator, a power transformation circuit and a storage battery; the impeller is arranged in front of an air outlet grid of an air conditioner outdoor unit and is connected with a generator rotating shaft; the powertransformation circuit receives alternating current electric energy output by the generator and converts the alternating current electric energy into a storage battery charging voltage; and the storage battery stores direct current energy output by the power transformation circuit. According to the wind power device, after the air conditioner outdoor unit is started, an external fan runs, forcedconvection is formed between the air conditioner outdoor unit and the impeller of the wind power device, and wind energy is converted into electric energy and stored in the storage battery; and when the air conditioner is in a standby or shutdown state, the electric quantity stored in the storage battery can be used to keep a signal receiving device in the machine and the components needing keeping active to be kept active all the time, and the standby or shutdown power consumption of the air conditioner is 0. The embodiment of the invention further discloses an air conditioner, a control method and a computer readable storage medium.

The invention relates to an automatic vending machine. The automatic vending machine comprises a cabinet, the internal of the cabinet is provided with a commodity display region, a refrigeration region below the commodity display region, and a commodity output region on the front side of the commodity display region. The refrigeration region is provided with a refrigeration unit. The refrigeration unit comprises an evaporator, a compressor, and a condenser. The evaporator and the commodity display region are communicated by airflow. The refrigeration region is internally provided with a thermal baffle. The left, right, and rear side edge portions of the thermal baffle are abutted against corresponding inner side walls of the cabinet. The thermal baffle separates the refrigeration region into an upper layer space and a lower layer space. The evaporator is in the upper layer space. The compressor and the condenser are arranged in the lower layer space. Through arranging the thermal baffle which can separate the refrigeration region into two spaces of an upper space and a lower space in the refrigeration region, the lower part space of the whole refrigeration region is independently isolated. Since thermal transmission would not occur between the lower layer space and the upper layer space, volume of the refrigeration region in the cabinet is reduced. Therefore, the energy efficiency of an automatic vending machine appliance is improved.

The invention discloses a washing control method of a washing machine and the washing machine. According to the method, the washing process of the washing machine is divided into at least two washing stages, and in each washing stage, a wash bucket corresponds to different inclination angles. The control method can also divide the washing process of the washing machine into T washing stages according to the energy efficiency parameter of the washing machine, wherein T is larger than or equal to 2, and the energy efficiency parameter includes one or an arbitrary combination of power consumption of the unit efficiency, water consumption of the unit efficiency and the washing ratio. The washing process of the washing machine is divided into several washing stages, through the cooperation with the inclination angle of the wash bucket, the washing control method of the washing machine is optimized, the washing effect is improved, and the energy consumption is reduced.

The invention discloses a refrigerating device, a constant-speed compressor system and a starting running low-power-consumption control circuit of the constant-speed compressor system. The constant-speed compressor system comprises a starter and a main control panel. The starting running low-power-consumption control circuit comprises a first controllable switch unit arranged on the main control panel, a second controllable switch unit arranged on the main control panel, and a control chip arranged on the main control panel, wherein the first controllable switch unit is connected with a constant-speed compressor through the starter; the second controllable switch unit is connected with the constant-speed compressor through the starter; the control chip is used for controlling the second controllable switch unit to be closed at first when receiving a starting instruction of the constant-speed compressor, controlling the first controllable switch unit to be closed to connect an alternating current power source to supply power to the constant-speed compressor after the second controllable switch unit is closed, and controlling the second controllable switch unit to be opened to cut off a power supply loop of a PTC resistor in the starter after the constant-speed compressor is started, and the purpose of zero power consumption of the starter is achieved when the constant-speed compressor runs.

The embodiment of the invention discloses a photoelectric device, and belongs to the technical field of air conditioner energy conservation. The photoelectric device comprises a photovoltaic module, afirst power transformation circuit and a storage battery, wherein the photovoltaic module is fixed on a shell of an air conditioner outer unit, the first power transformation circuit receives directcurrent electric energy output by the photovoltaic module and converts the direct current electric energy into charging voltage of the storage battery, and the storage battery stores the direct current energy output by the first power transformation circuit. By adopting the embodiment, the photoelectric device converts solar energy into the electric energy and stores the electric energy in the storage battery; when an air conditioner is in a standby state and a shutdown state, the electric quantity stored in the storage battery can be used to keep a signal receiving device in the machine and apart needing to be kept active in an active state all the time, and the power consumption of the standby state or the shutdown state of the air conditioner is 0. The embodiment of the invention further discloses the air conditioner, an air conditioner control method and a computer readable storage medium.

The invention discloses a clothes dryer, and relates to the technical field of clothes dryers. The clothes dryer comprises a box body and a rear plate, wherein the box body and the rear plate are fixedly connected. A roller for containing clothes is installed in the box body, an air inlet and an air outlet are formed in the lower portion of the box body, the rear end of the roller is communicatedwith the air inlet through an air inflow channel, the front end of the roller is communicated with the air outlet through an air outflow channel, a ventilating device is installed in the air inlet, and a heat exchanger is connected between the air outflow channel and the air inflow channel. A heating device is arranged at the rear end of the roller, and a heat insulation layer is arranged betweenthe heating device and the rear plate. By means of the heat exchanger, exhausted damp and hot air and sucked new air are subjected to heat exchange, therefore the temperature of airflow at the air inlet is increased, heat losses of the clothes dryer are effectively reduced, and the effect of recycling energy is achieved; through the arrangement of a heat preservation layer, the heat preservation structure of the clothes dryer is greatly improved, outward dissipation of heat is reduced when the clothes dryer works, the drying time is shortened, and the energy efficiency grade of the clothes dryer is remarkably increased.

The invention discloses a starting control circuit of a single-phase alternating-current motor, a compressor system, and refrigeration equipment. The starting control circuit is composed of a motor starting circuit, a trigger circuit, and a control circuit. The control circuit controls the trigger circuit to output a trigger signal to a controllable switch so as to trigger the controllable switch to be connected when the single-phase alternating-current motor is started; after conduction of the motor starting circuit, the single-phase alternating-current motor is started; after starting of the single-phase alternating-current motor, the control circuit controls the trigger circuit to stop outputting of the trigger signal, so that the controllable switch is turned off and the motor starting circuit is disconnected. Therefore, after starting of the motor, power consumption avoidance of a PTC resistor in the motor starting circuit can be realized by disconnection of the motor starting circuit, so that energy wasting resulted from power consumption caused by the motor starting circuit during working of the motor can be avoided. And thus the power consumption is reduced, the energy efficiency grade is improved, and energy conservation and environment protection can be realized.

The invention discloses a single-action type piston compressor and an air inlet control method thereof. The single-action type piston compressor comprises an air cylinder and a piston arranged in theair cylinder, wherein the cavity of the air cylinder is divided by the piston to form an interior air suction cavity as an air suction volume; the interior air suction cavity is formed in the reverseside of the piston; an air suction opening with an air suction valve is formed in the piston; the interior air suction cavity is connected with an exterior air suction cavity through an airflow through hole; a switching mechanism is arranged on the airflow through hole; the piston is connected with a crankshaft through a connecting rod; the piston is driven by the crankshaft to do reciprocating motion; when the air cylinder sucks the air, the air in the air cylinder expands, the piston moves downwards, and the switching mechanism on the airflow through hole is closed, so that the interior airsuction cavity and the exterior air suction cavity are disconnected to prevent the air in the interior air suction cavity from escaping; and when the air cylinder exhausts air, the air in the air cylinder is compressed, the piston moves upwards, and the switching mechanism on the airflow through hole is opened, so that the interior air suction cavity and the exterior air suction cavity are communicated with each other, and the air is supplemented into the interior air suction cavity through the exterior air suction cavity. The single-action type piston compressor can avoid air on the piston side from fleeing.

The invention provides an E0-stage air compression and treatment system, and a box body is internally and sequentially connected with an air filter core, a double-stage variable frequency air compressor, a coarse filter, a post-cooling system, a precision filter, a cold dryer, an ultra-precision filter, a post-treatment degreaser and an air treatment host. The air can filter large particles of impurities through the air filter and enters the two-stage variable frequency air compressor to obtain compressed air; the solid or liquid particles greater than 3 microns in the compressed air are filtered by the coarse filter; the solid or liquid particles greater than 0.01 microns and 99.99% of oil mist are filtered by a cooling system and the precision filter; the solid or liquid particles greater than 0.01 microns and 99.999% of oil mist are filtered by the cold dryer and the ultra-precision filter; the oil in the compressed air is filtered by the post-treatment degreaser; and finally the air is treated by a molecular sieve adsorption container in the air treatment host to achieve the ISO8573.1E0-stage standard compressed air.

The invention provides a planetary mill. The planetary mill comprises a feed inlet, a distribution plate, a planetary roller revolution driving arm, planetary rollers, a planetary roller sleeve, a planetary roller track bushing, a material to-be-milled step, a revolution driving mechanism, a machine body and the like. Ores which are crushed to be less than 20 millimeters in advance are subjected to step-by-step, repeated rolling and overflow discharge through six planetary rollers on an upper layer, a middle layer and a lower layer. Any fineness required by a process can be achieved only by controlling the feeding speed of materials and the revolution angular velocity of the planetary rollers. According to the process requirement, an external high-efficiency energy-saving powder concentrator can be configured to form closed-circuit grinding.

The invention discloses a testing method of a range hood, the testing method comprises the following steps: performing constant power control on the fan of the range hood according to set power to obtain M performance points to be selected of the fan and fan efficiency corresponding to each performance point to be selected; the performance point to be selected is a data pair of the air volume and the air pressure of the fan when the efficiency of the fan meets a set condition; M is an integer greater than or equal to 1; determining a target performance point from the M performance points to be selected according to the set power and the fan efficiency; the target performance point is the performance point to be selected enabling the energy efficiency grade of the range hood to be not lower than a target grade; and determining target operation parameters of the range hood according to the target performance point. According to the method, the development speed of improving the energy efficiency level of the whole range hood is remarkably increased, and the process cost and the installation cost are reduced.

The invention relates to a door-lifting type display cabinet. The door-lifting type display cabinet comprises a cabinet body and a cabinet door; the cabinet body comprises a top plate; a cabinet dooropening is formed in a front side of the cabinet body; the cabinet door covers the cabinet door opening; the cabinet door and the cabinet body are connected together through a supporting mechanism; agap is formed between a top edge of the cabinet door and the top plate of the cabinet body; a shielding cover plate is disposed between the cabinet door and the top plate; one side edge of the shielding cover plate is hinged to a top surface of the top plate, and the other side edge of the shielding cover plate is placed on an outer surface of the cabinet door, and in this way, the shielding coverplate can block the gap formed between the cabinet door and the top plate. The door-lifting type display cabinet is simple in structure, is reasonable in design, can block the gap formed between thecabinet door and the top plate during closing and opening of the cabinet door, can effectively ensure clean and healthy food in the cabinet body, can improve the energy efficiency level, and can prevent bacteria and pests.

The invention discloses a refrigeration device, a constant-speed compressor system and a startup operation low-power consumption control circuit thereof. The constant-speed compressor system comprises a main control panel and a PTC resistor arranged on the main control panel. The low-power consumption control circuit comprises a first controllable switch unit, a second controllable switch unit and a control chip arranged on the main control panel, wherein the first controllable switch unit is connected with a constant-speed compressor through a connector; the second controllable switch unit is connected with the constant-speed compressor through the PTC resistor and the connector; and the control chip is used for controlling the second controllable switch unit to be firstly closed while receiving a start command of the constant-speed compressor, controlling the first controllable switch unit to be closed after the second controllable switch unit is closed, so as to connect an alternating current power supply to supply power to the constant-speed compressor, and controlling the second controllable switch unit to be turned off after the constant-speed compressor is started, so as to cut off a power supply circuit of the PTC resistor. According to the constant-speed compressor system, the purposes that the constant-speed compressor is started without the assistance of a starter and the operation power consumption of the constant-speed compressor is reduced are achieved.

The invention discloses an air source heat pump coupled superconductive pipe solar module seawater temperature control system and method, and relates to the field of seawater culture equipment. The system comprises a temperature control water tank, a heat supply source, an electric control valve, a conduit and a plurality of heat exchangers, the temperature control water tank is respectively connected with the heat supply source and heat exchangers through the conduit and the electric control valve to form a thermal cycle pipeline and a cold circulation pipeline, the temperature control watertank comprises a hot water tank and a cold water tank, and the heat supply source comprises an air source heat pump and a solar heat collector, and the conduit comprises a heat conducting pipe, a cooling pipe and a heat exchange pipe; according to the invention, by controlling the on and off of the electric control valve, the real-time conversion and seamless connection of the cold and hot circulation are achieved, and different requirements on breeding cold water, warm water and hot water for breeding farms such as fish, shellfish and crustaceans farms at the same stage are met.

A system and method for controlling the volume ratio of a compressor is provided. The system may use port (88) or multiple such ports in the rotor cylinder to direct vapor from the compression chamber to the discharge passage of the compressor. A control valve (90) may be used to open or close the port or ports to achieve different volume ratios within the compressor. The control valve (90) may be moved or adjusted by one or more valves that control fluid flow to the valve. A control algorithm may be used to control the one or more valves to move the control valves to achieve different volume ratios of the compressor. The control algorithm may control the one or more valves in response to operating parameters associated with the compressor.