214results about How to "Improve running performance" patented technology

The invention relates to a bio-organic compound fertilizer, which comprises the following components in part by weight: 10 to 30 parts of organic matter, 2 to 10 parts of compound microbial inoculants, 5 to 20 parts of humic acid, 5 to 20 parts of amino acid, 4 to 10 parts of chitin, 1 to 5 parts of polypeptide, 530 parts of nitrogen, phosphorus and potassium, 5 to 10 parts of secondary and trace elements, 5 to 15 parts of algae fertilizer, 5 to 10 parts of zeolite powder and 1 to 5 parts of synergistic agent. Through the scientific and rational formula, the bio-organic compound fertilizer achieves nutritive equilibrium and can satisfy the need of crop growth in nutrient. The microbial inoculants are added to quickly degrade natural macromolecular organic compounds into the organic fertilizer and decompose organic pollutants, which effectively improves the capacity of crops in the absorption of nutrient components, reduces the waste of the fertilizer and reduces the damage of the chemical fertilizer to soil to further achieve the nutritive equilibrium, satisfy the need of the crop growth in the nutrient, achieve the aims of low investment and high output value, improve the quality of the crops and improve the economic benefit brought by the crops.

The invention discloses an antitranspirant foliar fertilizer and a preparation method thereof. The antitranspirant foliar fertilizer comprises the raw materials of copper sulfate, ethylene diamine tetraacetic acid, monopotassium phosphate, zinc sulfate, ferrous sulphate, manganese sulphate, ammonium molybdate, composite rare earth, boric acid, sodium dodecyl sulphonate, urea, fulvic acid, hexanoic acid 2-(diethylamino) ethyl ester, compound amino acid, magnesium sulfate, calcium nitrate, ethylene diamine tetraacetic acid, microbial agent, azone and ammonia water. The antitranspirant foliar fertilizer provides nutrient elements and microbial agents which are required by the growth of plants, the rare earth and amino acid and other beneficial elements, can promote the growth of the plants, improve the yield, the quality, the stress resistance of the plants and the absorbing and operating capabilities on trace elements, simultaneously can effectively reduce the transpiration of the plants and is applied to afforesting in arid regions.

A vehicle having in-wheel motors, wherein when the in-wheel motors are mounted on the vehicle driven by the torque of an internal combustion engine, the in-wheel motors (3) are mounted on wheels on one side of the vehicle opposite to the other side on which the internal combustion engine (51) is mounted. The non-rotating side of the motor and the knuckle (5) are supported by a buffer mechanism (10) having plates (11) and (12) connected to each other by a direct-acting guide (15) with springs composed of a direct-acting guide (13) comprising a linear bearing (13A) and a rod (14) and spring members 14 and 14 moving in the vertical direction of the vehicle and mated with the direct-acting guide (13) and a damper (16) for interconnecting the plates (11) and (12), moving in the vertical direction of the vehicle to support the motor (3) to either one or both of the unsprung mass of the vehicle and the car body by means of the buffer mechanism (10). Thus, the running ability and riding comfort of the vehicle having in-wheel motors can be improved.

The invention discloses a method for controlling a variable frequency air conditioner under low voltage. The operating frequency F of a compressor is regulated according to input voltage Vin. The method comprises the following steps of: judging whether the input voltage Vin is undervoltage, if so, finding an initial operating frequency F0 according to the range in which the input voltage Vin is positioned, and initializing the compressor; judging whether the frequency boosting conditions are met, if so, boosting the frequency of the compressor according to a frequency adjustment value DeltaF which corresponds to the frequency boosting conditions; and finally, judging whether the current frequency is less than the highest frequency limit value F1 which corresponds to the range in which the input voltage Vin is positioned, and otherwise, returning to the previous step. When the input voltage of the variable frequency air conditioner is lower than a certain range of rated voltage, the variable frequency air conditioner can continuously operate and is not required to be stopped, the driving module of the compressor and other key devices can be guaranteed to be reliable, the operating capacity of the air conditioner is improved to the greatest degree, and the using experience of a user under low voltage is reduced.

The present invention discloses a micro-grid inverter droop control method based on adjustable virtual impedance. Inverter output current i0 and common point voltage UL are detected and active power P and reactive power Q are obtained, and a traditional PQ droop control algorithm is used to obtain voltage Upq. An inferer based on a membership cloud model is designed, the error of the reactive power and an error variable quantity are taken as the input signal of the inferer, and through a corresponding inference rule, the adjustable virtual impedance delta ZV is obtained through inference. The adjustable virtual impedance and initial virtual impedance are added to obtain final virtual impedance ZV. The final virtual impedance ZV and the inverter output current are multiplied, then the result of the multiplication and the voltage Upq are subtracted, an obtained signal is sent PWM, and the on and off control of a power device in an inverter is realized. The power outer ring controller of a micro source is designed according to a droop characteristic, the power automatic distribution function of the micro source is realized, the real-time adjustment of the virtual impedance is realized by using the membership cloud model, and the power sharing between micro sources is realized.

The invention discloses a pump driven by a brushless direct current motor, a pump equipped with the brushless direct current motor as well as a manufacturing method of the brushless direct current motor for driving the pump. The brushless direct current motor of the pump comprises a motor shell and a motor shaft, wherein the motor shell comprises a lower end cover and an upper end cover, a statorpart is fixed between the lower end cover and the upper end cover, the motor shaft passes through the lower end cover and extends downwards, surrounding edges extending upwards are arranged at the periphery of the upper end cover, a circuit board chamber is arranged at the upper side of the upper end cover and is internally provided with a control circuit board and an encapsulating body made of encapsulating material, an internal lead of the control circuit board is connected with a connecting wire of the motor after passing through an internal lead hole on the upper end cover, and an external lead of the control circuit board passes through the encapsulating body and extends outwards. The control circuit board is sealed in the circuit board chamber in the way of encapsulating, and the encapsulating body can protect the control circuit board, ensure the reliability of motor control and operation, simplify the structure of the motor and facilitate the assembly of the motor.

The invention discloses a plant protection pellicle, comprising 8-12 percent of polyvingl acetate emulsion,8-12 percent of humate, 3-5 percent of hydroxypropyl methylcellulose, 0.5-1 percent of alkyl sulphonates, 4-6 percent of Polyoxyethylene lauryl alcohol, 1.5-3 percent of gelatine glue, 1-2 percent of nano silica hydrated and 60-70 percent of water, and the compositions are added into water and mixed evenly to achieve black-brown suspension liquid. The plant protection pellicle has the functions of drug action, fertilizing, bagging and slow release. After dilution by water and spraying, a monomolecular film invisible to eyes is formed on the surface of the plant, thereby, the fruit tree is coated with 'clothes' immediately for thermal insulation, frost protection and drought resistance, restraining the transpiration of the moisture in the tree body, preventing the secondary infection of disease germs and improving the quality of agricultural products.

The invention discloses an adjustable vane system of a gas turbine power turbine, which relates to an adjustable guide vane of a turbine. The invention aims at solving the problem that the traditional adjustable guide vane system of the gas turbine power turbine has a complicated sealing structure and low functional reliability. The other end of a rocking arm is connected with the upper end of a ceramic rotating shaft, a second bearing sleeve is arranged on the upper end surface of a casing, an adjustable guide vane comprises an upper guide vane shaft, a lower guide vane shaft and an adjustable guide vane main body, the upper guide vane shaft, the adjustable guide vane main body and the lower guide vane shaft are fixedly assembled into a whole in sequence from top to bottom, the upper guide vane shaft and the lower guide vane shaft are coaxial, a ceramic shaft sleeve is sleeved on the upper guide vane shaft, the upper end of the upper guide vane shaft passes through the casing to be fixedly connected with the ceramic rotating shaft, an end cover is fixedly arranged on the upper end surface of the second bearing sleeve, an expanded graphite shaft sleeve is sleeved on the lower guide vane shaft, a left half cylinder and a right half cylinder are fixedly assembled into a whole. The adjustable guide vane system of the gas turbine power turbine provided by the invention is designedfor regulating turbine stage through-current capability.

A tissue papermaking machine is described, comprising a wet section (2) and a press section (3) comprising a single press (11) with first and second press elements (12, 13) forming a press nip (N1), and with a press felt (17) running through the press nip in contact with the formed fibre web (1'), whereby the second press element is arranged inside the loop of the press felt, and a smooth belt (14) runs through the press nip in contact with the formed fibre web, whereby the first press element is arranged inside the loop of the belt, and a transfer roll (16) arranged inside the loop of the belt forming a transfer nip (N2) with a drying surface (20), whereby the smooth belt carries the fibre web between the press nip and the transfer nip. Furthermore, the machine has a dry section (4) for final drying of the fibre web (1''). According to the invention, a pre-dewatering device (25) is arranged upstream of the press to dewater the fibre web to a dry content of 15-30%, before the fibre web runs into the press nip, and the press felt and the smooth belt, which is impermeable to water, are arranged to be separate from each other immediately after the exit of the press nip and define there between an angle a, which is at least 5 DEG , to prevent rewetting of the fibre web. The invention also relates to a method of manufacturing a tissue paper web therein and a method of lowering the energy requirement therein.

The invention relates to a biological composite fertilizer, and concretely relates to a biological composite fertilizer. The biological composite fertilizer is characterized by being composed of the following raw materials: 7-9 parts of a microbial composite inoculant, 3-5 parts of nitrogen-fixing bacteria, 3-5 parts of phosphobacteria, 3-5 parts of potassium bacteria, 5-15 parts of humic acid, 10-20 parts of amino acids, 4-6 parts of chitin, 1-3 parts of polypeptide, 5-15 parts of medium and trace elements, 5-15 parts of an algae fertilizer, 8-10 parts of zeolite powder, and 1-3 parts of a synergist. The fertilizer is capable of obviously improving soil fertility and microbial environment in soil, and has effects of resisting insect diseases. The fertilizer is low in cost, simple in production technology, long in fertilizer efficiency and free of pollution. Nutrition balance is reached through scientific reasonable formula, nutrients demanded by crop growth are satisfied, large-molecular natural organic compounds are accelerated to be decomposed into an organic fertilizer by adding the inoculants, organic pollutants are decomposed, the capability of crop absorbing nutrients is effectively improved, fertilizer waste is reduced, damage of chemical fertilizers to soil is reduced, and thus nutrition balance is realized, nutrients demanded by crops are satisfied, and economic benefit of crops is improved.

The invention relates to an improved temperature controller of an engine, which can solve the problems that the structure for regulating and controlling the working temperature of the engine in the prior art is poor and can not achieve the ideal requirements. The temperature controller comprises a valve body, a worm gear shaft assembled on the valve body, a temperature control actuating mechanism for controlling a large circulation loop and a small circulation loop of coolant and an automatic control loop for the large circulation loop and the small circulation loop of the coolant, and the automatic control loop mainly consists of a micro-computer control mechanism. The technical key points are as follows: the I type temperature control actuating mechanism is directly driven by utilizing the worm gear shaft, or the II type temperature control actuating mechanism is driven by utilizing the worm gear shaft and a rack shaft which is arranged on the worm gear shaft and meshed with a gear, thereby controlling the large circulation loop and the small circulation loop of the coolant respectively. The structural design is reasonable, and the regulation and the control are accurate and reliable, thereby always keeping the engine at the optimal working temperature state when running under any climate and environment, obviously improving the running performance of the engine, further reducing the fuel consumption, reducing the harmful gas emissions, fully improving the capability of outputting the power of the engine and prolonging the service life of the engine.

The invention discloses a parameter adjustment setting method for various types of air conditioners. The method comprises the following steps: a manual setting debugging step; a power detection step, namely detecting power to judge whether a manually-set function sign is effective, executing an air conditioner running debugging step if the manually-set function sign is effective, otherwise executing an air conditioner main program running step; the air conditioner running debugging step, wherein an air conditioner is capable of invoking a debugging parameter value in EEPROM, debugging the running according to the invoked debugging parameter value and recording the accumulated running time until the accumulated running time satisfies the set time; a parameter valve updating step; and the air conditioner main program running step comprising the following steps: acquiring the machine type information of the air conditioner; reading the parameter value configured in a main program according to the machine type information and running according to the parameter value configured in the main program. By means of the method disclosed by the invention, the EEPROM memory space is not occupied and debugging is convenient.

Drivability is improved by generating a maximum engine torque at the time of origination. A lockup clutch (30) for altering a power transmission path is arranged in parallel with the power transmission path between the pump impeller (11) and the turbine runner (13) of a fluid coupling (10) arranged between the drive side and the load side, a stall capacity coefficient Cs¢N m / rpm2! is determined based on an engine r.p.m. generating a maximum engine torque Tmax on the drive side, and used for transmitting rotation on the drive side to the load side. Best accelerability is obtained by setting the stall capacity coefficient Cs such that the stall r.p.m. approaches the r.p.m. for generating a maximum engine torque, drivability is improved by a quantity of control not causing strange feeling between the quantity of stepping an accelerator and the vehicle speed, and the mileage can be enhanced.

Provided is an electromagnetic device employing homopolar opposite magnetic sets, comprising one or more magnetic sets, with the magnetic sets being formed by every two oppositely fixed magnets. The two opposite magnets of the magnetic set are arranged in homopolar opposite manner and the magnetic field of two opposite magnets of the magnetic set can be passed by one or more coils. The opposite magnets of the magnet set are arranged in the manner of Pole N to N or S to S. The magnetic set can be defined as rotor while the coils can be defined as stator. The magnetic set can also be defined as stator while the coils can be defined as rotor. The magnetic set and coil of the electromagnetic device are selected from disk type or wheel type arranging manner. The electromagnetic apparatus can be as the generator or motor. The generating efficiency of the electromagnetic device emphasizes cutting number rather than the rotating speed. With the increase of the cutting number, the output of heavy current and voltage can be realized, thereby substantially raising the generating efficiency and the revolving efficiency of the motor.

The invention provides a hydraulic pump control device for building machine, which is suitable for a building machine comprising an engine and a hydraulic pump. The hydraulic pump is connected with the engine and is driven by the engine, and the absorption toque changes according to the applied control signal. The hydraulic pump control device comprises a control portion that when the information related to the target rotation speed of the engine (Ncmd), the information related to the oil amount needed by the hydraulic pump (Qcmd), and the current output pressure of the hydraulic pump (Ppress), the torque needed by the pump (Trequest) is calculated according to the oil amount needed by the hydraulic pump (Qcmd) and the current output pressure of the pump (Ppress), the absorption torque of the hydraulic pump is changed, so that the time when the absorption torque of the hydraulic pump reaches the torque needed by the pump (Trequest) is delayed, which is correspondent to the time when the engine reaches the target engine torque corresponding to the target rotation speed of the engine (Ncmd).

A computer and mobile phone input method of Chinese character holographic code includes forming sound code by initial consonant and vowel of Chinese character and forming shape code by component and stroke as well as stroke form then carrying out full spelling and double spelling as well as triple spelling to form mixed input coding system without said shape code-said sound code switching-over to each other, enabling to use normal keyboard on computer or on mobile phone to input said holographic code.

A multi-point-contact flexible bearing for a harmonic reducer comprises a three-point-contact flexible ball bearing, a four-point-contact flexible ball bearing and a line-contact flexible roller bearing; a single rolling body and an outer ring raceway, namely, an outer ring-flexible gear interference-fit piece have two or more contact points; compared with the prior art that only one contact point exists, the multi-point-contact flexible bearing has the quality and technological advantages that the given deformation precision of the outer ring-flexible gear interference-fit piece and the meshing precision of flexible gear teeth with rigid gear teeth are improved, unnecessary additional deformation is reduced and even avoided, the contact stress of the rolling body with the raceway is reduced, sliding of the rolling body is controlled, assembling conditions and lubricating conditions of the bearing during operation are improved, and the like; and finally, the running precision and the service life of the flexible bearing, a flexible gear and even the whole harmonic reducer are improved and prolonged, and the bearing has very important actual engineering significance.

The invention provides a main pipe type micro gas turbine set with two air compressors, which relates to a gas turbine set for generating electricity. The micro gas turbine set solves the problem that the prior micro gas turbine set cannot keep higher running efficiency in a wider load change range. An output shaft of a first motor (8) is connected with an output shaft of a first air compressor (2) through a first lamination coupling (6), an output shaft of a second motor (9) is connected with an output shaft of a second air compressor (3) through a second lamination coupling (7), outputs of the first air compressor (2) and the second air compressor (3) are connected with an inlet of a main pipe (1), an output of the main pipe (1) is connected with an inlet of a combustion chamber (4), an output of the combustion chamber (4) is connected with an inlet of a turbine (5), and an output shaft of the turbine (5) is connected with one end of a third lamination coupling (10). The main pipe type micro gas turbine set achieves the aim of keeping the higher running efficiency in a wider load change range, improves the running performance of the air compressors, and improves the overall economical efficiency of the gas turbine set.

In a rail system (70), the rail joints (4) are bridged by a connecting element (52, 64, 74, 77), wherein the rail ends (5a, 5b, 72, 73) are oriented flush with one another and can be displaced in the direction of the rails. The rails (71) and the connecting element (52, 64, 74, 77) are embodied in such a way that no interruption is produced in running faces at the rail joint (4).

A vehicle control device restrains clutch deterioration and can improve operability. The vehicle control apparatus is provided with the following components: a sliding control clutch which has an operation mode of performing rotation speed control on a driving source according to a mode that the driving source side rotation speed of the clutch becomes a rotation speed that is higher than the driving wheel side rotation speed of the clutch for a preset amount; a vehicle stopping state determining device; a torque detecting device; a vehicle stopping transmitting torque capacity correcting device which reduces instruction oil pressure from an initial instruction oil pressure and sets a corrected instruction oil pressure based on the instruction oil pressure in determination release; an inclination switching oil pressure setting device which sets an inclination switching oil pressure based on actual torque change amount in a period between reduction of the instruction oil pressure from the initial instruction oil pressure until termination of the actual torque change; and an instruction oil pressure increasing device which increases the instruction oil pressure from the instruction oil pressure in determination release to the inclination oil pressure with a preset torque generation front semi-inclination generation before the corrected instruction oil pressure is set, and increases the instruction oil pressure with a back semi-inclination which is smaller than the torque generation back semi-inclination that is smaller than the torque generation front semi-inclination after an inclination switching oil pressure is obtained.

The invention discloses a damping impedance type pressure regulating device which comprises a water diversion pipe and a pressure regulating chamber communicated with the atmosphere. The bottom of the pressure regulating chamber is communicated with the water diversion pipe through a connection water way. A movable damping ball is arranged in the connection water way and limited and controlled through damping springs. The two end faces of the connection water way are provided with supporting frames. The centers of the two supporting frames are fixedly provided with a supporting sliding rod arranged along the longitudinal center of the connection water way. The supporting sliding rod penetrates through the center of the damping ball. The upper end face and the lower end face of the damping ball are provided with the damping springs. According to the damping impedance type pressure regulating device, an impedance porthole capable of adjusting the area and the damping coefficient in a bi-directional mode is designed, the functions that the water hammer pressure is lowered through the pressure regulating chamber, the unit operation performance is improved, and the impedance type pressure regulating chamber is fully utilized are achieved; it is proved by a model test that the device can achieve the function of blasting a membrane through a water hammer and is capable of lowering the water hammer pressure in a pressure pipe and capable of lowering the highest surge wave water level of the pressure regulating chamber, increasing the lowest surge wave water level of the pressure regulating chamber and improving the operation safety of the pressure regulating chamber.

The invention provides an assembling structure of a crankshaft and a rotor which includes the crankshaft and the rotor; the long shaft part of the crankshaft is fixed in the shaft hole of the rotor; the invention is improved in that the inner edge of the shaft hole of the rotor is provided with more than one internal concave blocking positions; a salient structure corresponding to the blocking position is arranged on the outer side surface of the long shaft of the crankshaft; the crankshaft and the rotor are assembled into a whole by the mutual blocking of the salient structure and the internal concave blocking position; the heating working procedure is omitted, the assembling operation is simple and convenient, the fixing blocking intensity of the crankshaft and the rotor is high, the finished product rate is improved and the manufacture and assembling cost is reduced by fixing the crankshaft and the rotor by a mechanical blocking position structure.

The invention discloses an environment-friendly coating for high speed. The formula of the coating comprises a pre-coating coating, a medium-coating coating and a surface-coating surface; the formulaof the pre-coating coating comprises the following components in parts by weight: 100 parts of grinding calcium carbonate with the grade of C65, 0 to 2 parts of latex, 12 to 17 parts of a biological adhesive and 0 to 0.3 part of a thickening agent; the formula of the medium-coating coating comprises the following components in parts by weight: 100 parts of the grinding calcium carbonate with the grade of C65, 7 to 11 parts of the biological adhesive, 1 to 4 parts of the latex, and 0.1 to 0.5 part of the thickening agent; the formula of the surface-coating coating comprises the following components in parts by weight: 95 to 100 parts of grinding calcium carbonate with the grade of C98, 0 to 5 parts of porcelain clay, 6.5 to 14 parts of the biological adhesive, 1.5 to 4.5 part of the latex and 0 to 0.2 part of the thickening agent. According to environment-friendly coating for the high speed, copper printing paper has biodegradability, has good performance, and meets the requirement of ahigh-speed paper machine.

The invention relates to an evaporation and concentration system. The evaporation and concentration system comprises a raw material tank, a feeding pump, a heater, a wiped-film evaporator, a crystal grower and a liquid-solid separator, which are sequentially connected with one another, wherein a liquid outlet of the liquid-solid separator is connected with the raw material tank; a jacket is arranged on the outer surface of the heater; an inlet is formed in the upper part of the jacket; an outlet is formed in the lower part of the jacket; the inlet of the jacket is communicated with an air outlet formed in the top of the wiped-film evaporator; the outlet of the jacket is connected with a gas-liquid separator and a jet pump sequentially. The evaporation and concentration system provided by the invention has the advantages of energy conservation and high efficiency, zero discharge in a concentration process is realized, and good evaporation conditions are created.

The invention discloses an unstructured document management and rule and system entry management integrated system which comprises a data input module used for inputting rule and system files; The system file data set is used for storing rule file data; The indexer is used for constructing an index for the rule file data; The index library is used for storing all file indexes; The word segmentation device is used for analyzing at least one retrieval keyword from retrieval information input by a user; And the retriever is used for determining a target file index matched with the retrieval keyword from the file indexes in the index library, determining target description information corresponding to the target file index and displaying the target description information. The invention provides a storage and retrieval platform integrating unstructured document management and rule entry management, a user can quickly and accurately obtain a full-text retrieval result of a rule, and meanwhile, the cloud storage, access and management functions of the unstructured document can be realized.

Disclosed is a pressure control valve used in a clutch of an automatic transmission. The pressure control valve includes a valve body having a supply port, a control port and a discharge port therein; a first insert disposed inside the valve body, the first insert being formed with an inlet connected to the supply port and an outlet for discharging fluid supplied through the inlet; a ball disposed inside the first insert to open / close the outlet; a second insert coupled to the outlet side of the first insert, the second insert being formed with a first discharge hole connected to the control port and a second discharge hole connected to the discharge port; a rod movably provided to the valve body, the rod having one end extending toward the ball, the rod having a poppet formed in the middle thereof to open / close the second discharge hole; and a solenoid moving the rod. With the above structure, according to a current value applied on the solenoid, the outlet of the first insert and a second discharge hole of the second insert are opened and closed by use of the ball and the poppet, or the opening degree is adjusted, thereby effectively adjusting the pressure of the fluid discharged through the control port, and preventing unnecessary waste of the fluid.

A roller bearing comprises at least two rows of rollers disposed between an inner ring and an outer ring. At least two tracks guide the respective rows of roller and are defined in the axial direction of the inner ring or the outer ring. At least one flange abuts axial ends of axially-adjacent rows of rollers and extends radially from a radially outer side or a radially inner side of the inner ring or the outer ring. At least one recess is defined on the side of the inner ring or the outer ring that is opposite of the radially outer side or the radially inner side of the inner ring or the outer ring, from which the at least one flange radially extends. The at least one recess at least partially overlaps the at least one flange in the axial direction.

A power converter wherein the voltage error, which is caused by a dead time in the vicinity of the zero cross of an output current, can be accurately corrected and a power converting means can output an AC power in accordance with an AC voltage command. A voltage command correcting means, which is disposed between the power converting means and a voltage command arithmetic means, establishes a predetermined current range including a zero level for a detected output current. At a first time point when the value of the output current gets into the current range, the voltage command correcting means sets, based on the first time point and a frequency (f) (and the output current as well), a time point, at which to switch the polarities of a correction voltage that corrects the AC voltage command arithmetically outputted by the voltage command arithmetic means, to a timing of zero cross of the output current. That is, the switching of the polarities of the correction voltage used to correct the voltage error caused by the dead time is effected at the zero cross of the output current, whereby the correction voltage exhibiting the same polarity as the output current can be used to correct the AC voltage command in the neighborhood of the zero cross of the output current.

A refrigeration device is configured in such a manner that an increase in the size of a heat exchanger for injection is minimized and in such a manner that the function of reducing the discharge temperature of a compressor is ensured. An air conditioning device (10) using an R32 refrigerant is provided with: a compressor (20); an indoor heat exchanger (50); an outdoor expansion valve (41); an outdoor heat exchanger (30); a branch pipe (62); an electric valve (63) and a heat exchanger (64), which are used for injection; a high-pressure receiver (80); and the like. The heat exchanger (64) allows the exchange of heat between a refrigerant which flows though a main refrigerant flow passage (11a) and a refrigerant which has passed through the electric valve (63) in the branch pipe (62). A first injection flow passage (65) conducts a refrigerant to the compressor (20), the refrigerant having flowed through the branch pipe (62) and exited from the heat exchanger (64). A second injection flow passage (82) conducts a refrigerant gas component in the high-pressure receiver (80) to the compressor (20).