310 results about "Refrigeration compressor" patented technology

The invention discloses an intelligent start-stop control method and system for a magnetic suspension refrigeration compressor, and the method comprises the steps: obtaining a position perception enhancement source through collecting and analyzing the current response data of a magnetic bearing coil, and extracting the current response change characteristics; rotor position estimation is carried out based on current response change characteristics, a positioning precision driving source is extracted from estimation deviation, and a non-impact starting excitation current instruction is generated; a multi-sensor fusion data network is established, configuration is reconstructed through an abnormal response activation signal, and a degradation operation fault-tolerant mode is formed; converting a response preparation gain according to the shutdown instruction signal, performing shutdown state evaluation in combination with signal reconstruction configuration, and generating an emergency shutdown trigger condition; and the power supply state of a bus capacitor is detected, gradient control potential is released, the active damping control opportunity is determined, a damping force control instruction is generated, finally intelligent start-stop control over the magnetic suspension refrigeration compressor is achieved, and safe and reliable operation of the system under various working conditions is ensured.

The invention discloses an air source heat pump control method and device for a magnetic suspension refrigeration compressor. Adjusting deviation mapping is generated by constructing a temperature response curve and a load demand curve and executing relevance evaluation, an out-of-tolerance mismatch window is detected, and load sudden change characteristics are extracted to determine an adjusting period; positioning an overlapping section in an adjusting period, establishing a refrigerant flow distribution grid to identify a cooperative constraint degree, executing resource conflict identification, marking conflict positions, generating comprehensive weights, and arranging the comprehensive weights in a descending order to form a scheduling sorting table to recombine a compressor operation time sequence; adjusting capacity is preset and fused with a temperature response curve to form an adjustable power range, an area with insufficient margin is identified, margin compensation parameters are generated, and a dynamic adjusting limit is determined; the method comprises the following steps: performing time sequence splitting on environment temperature change based on a dynamic adjustment limit to generate a sudden change component and a slow change component, respectively generating a compressor speed regulation sequence and a heat exchanger adjustment sequence, fusing and establishing a control instruction, and realizing supply and demand accurate matching, resource conflict resolution and dynamic response optimization.

The present invention relates to the technical field of compressor performance testing and testing equipment manufacturing. Disclosed are a system volume-adjustable device and method for evaluating the starting characteristic of a refrigeration compressor. The evaluation device comprises a sample under test, a test refrigeration system and a test control system. By means of controlling a high-pressure-end volume regulator, a low-pressure-end volume regulator and a condensing coil, the evaluation device precisely adjusts a refrigeration system volume, so as to match the test requirements of different compressors for the refrigeration system volume, and provide a volume-adjustable substitute refrigeration system for starting characteristic testing. The present invention synchronously collects transient characteristic parameters such as intake and exhaust pressure, inter-phase voltage, phase line current and housing vibration acceleration at the instant of a compressor start, and non-transient characteristic parameters such as the in-housing temperature of a variable-frequency driver, the temperature of a power module and the temperature of a rectifier bridge, so as to accurately measure and evaluate the starting characteristics of the refrigeration compressor in specific environments.

The invention provides a multi-grade waste heat grading recovery device for a poultry processing factory, and solves the technical problems that existing waste heat recovery equipment is mainly designed for single-grade and low-impurity-content waste heat resources and is difficult to adapt to feather drying waste gas with high impurities and exhaust temperature fluctuation of a refrigeration house compressor in a poultry processing scene. The device can be widely applied to the field of waste heat recovery equipment. The system specifically comprises a feather drying waste gas treatment system, a refrigeration house waste heat pressure stabilizing system and a comprehensive control system, wherein the feather drying waste gas treatment system comprises a cyclone separator and an electrostatic degreaser; a gas inlet pipe of the cyclone separator is communicated with a waste gas discharge pipe, waste gas enters from the tangential direction of the cylindrical section of the separator, and solid impurities are thrown to the wall of the separator and fall to a bottom ash hopper along the wall surface; the waste gas subjected to dust removal enters an electrostatic degreaser, a high-voltage electrode and a grounding polar plate are arranged in the degreaser, grease particles in the waste gas are ionized under the action of a high-voltage electric field, and the grease particles with negative electricity are adsorbed to the grounding polar plate.

The invention provides a magnetic suspension integrated energy-saving refrigeration compressor, and relates to the technical field of refrigeration equipment, the magnetic suspension integrated energy-saving refrigeration compressor comprises a main body assembly, and the two ends of the main body assembly are in threaded connection with volute assemblies; the two volute assemblies are connected through a gas-liquid circulation assembly, a magnetic suspension motor unit is installed in the main body assembly, an impeller assembly is in driving connection with the interior of the magnetic suspension motor unit, and a magnetic suspension control module and a motor monitoring module are installed on the two side walls of the main body assembly respectively. Full magnetic suspension supporting is adopted, mechanical friction is avoided, energy is saved, consumption is reduced, the service life of a unit is prolonged, and operation noise is reduced. The integrated structure is matched with the sealing piece, gas and liquid leakage is prevented, gas circuit and system circulation is optimized, and the refrigeration energy efficiency is improved. The stable and efficient operation of the compressor is guaranteed through the wear resistance of the impeller and real-time monitoring and regulation of the intelligent module.

The invention relates to the technical field of freeze-drying control, and discloses a freeze-drying control method and system based on dynamic parameter regulation and control and heat and mass transfer simulation. The method comprises the steps that a multi-point temperature sensor collects temperature gradient and mass change rate data; a chaos butterfly effect algorithm identifies a nonlinear transition point and predicts an ice crystal growth trend; evaluating the heat conductivity coefficient of the material, and dividing kernel, middle and surface regions; designing a differentiated cooling curve; and cooperative control instructions of the refrigeration compressor unit, the vacuum pump unit and the heating plate array are generated, and multi-stage cooperative control is achieved. The problems of uneven ice crystal distribution and material structure damage caused by extensive temperature control in a traditional building material freeze-drying process are solved.

The silencing cavity structure comprises an upper cavity, a lower cavity and a first partition plate arranged between the upper cavity and the lower cavity, an air inlet channel is formed in the outer side face of the lower cavity, and a snakelike communicating vessel assembly connected to the first partition plate is arranged in the lower cavity. The snakelike communicating vessel assembly comprises a snakelike communicating pipe and at least one second partition plate arranged on the snakelike communicating pipe, the second partition plate divides the lower cavity into a plurality of small cavities, the wall of one small cavity is connected with an air inlet channel, one end of the snakelike communicating pipe corresponds to the air inlet channel, and the other end of the snakelike communicating pipe is connected to the first partition plate. The air passes through each small cavity; a third partition plate is arranged in the snakelike communicating pipe in the bending path direction of the snakelike communicating pipe. The snakelike communicating pipe and the third partition plate are provided with notches in the space where the remaining small cavities are located. A fourth partition plate is arranged in the air inlet channel in the air inlet direction. By adopting the scheme, the noise reduction characteristic of the target frequency band can be improved under the condition that the air suction efficiency is not influenced.

The invention relates to an electric drive device (1) for a vehicle, comprising an electric machine (12), an inverter (13) electrically connected to the electric machine (12), and a refrigerant compressor (14), wherein the electric drive device (1) has a housing (10) having a first chamber (22) in which the electric machine (12) is arranged, and a second chamber (23) in which the inverter (13) is arranged, and having a partition (45) separating the first chamber (22) from the second chamber (23), wherein a cooling channel (30) for cooling the inverter (13) is provided in the partition (45), wherein the cooling channel (30) has an inlet (31) and an outlet (32), and wherein the refrigerant compressor (14) is arranged in a refrigerant compressor housing (24) of the electric drive device (1).wherein the refrigerant compressor housing (24) has a refrigerant inlet (25) for the inlet of the refrigerant (70) to be compressed into the refrigerant compressor housing (24) and a refrigerant outlet (26) for the outlet of the compressed refrigerant (70) from the refrigerant compressor housing (24). The outlet (32) of the cooling channel (30) is connected to the refrigerant inlet (25) of the refrigerant compressor housing (24).

The utility model provides an electric control valve of an automobile refrigeration compressor, which relates to the technical field of electric control valves, and comprises a refrigeration compressor main body and an electric control valve main body, and a limiting bulge for installing the electric control valve main body is formed at the upper top end of the refrigeration compressor main body. The refrigeration compressor body and the electric control valve body can be quickly connected through the quick release mechanism, when the electric control valve body is damaged, the electric control valve body can be replaced in time, time is saved, and the use efficiency is improved, the quick release mechanism is composed of an upper structure and a lower structure, and a first mounting plate and a second mounting plate are matched with each other; and the first clamping base and the second arc-shaped clamping block are connected in a sleeving mode, the second clamping base and the first arc-shaped clamping block are connected in a sleeving mode, finally, the second arc-shaped clamping block and the magnetic attraction rack on the outer wall of the first arc-shaped clamping block are clamped in a limiting mode through the magnetic attraction rack, and the situation that the magnetic attraction rack falls off in the using process is avoided.

The invention discloses a semi-closed reciprocating refrigeration compressor for ammonia, and relates to the technical field of refrigeration. Comprising a semi-closed machine shell, and a compression mechanism and a driving motor which are arranged in the machine shell. A stator winding of the driving motor is made of an aluminum or aluminum alloy material so as to resist corrosion of an ammonia refrigerant; the compression mechanism is of a reciprocating piston type structure; in addition, the driving motor directly drives the reciprocating piston type compression structure to operate, and a traditional shaft seal and a traditional coupler are omitted. The crankshaft also serves as a motor shaft, and direct connection driving is achieved. And integrally-formed radiating fins are arranged at the position, corresponding to the motor, outside the shell so as to enhance the radiating and structural strength. And the air suction port is communicated to the motor cavity, so that low-temperature ammonia gas flows through the motor to cool the motor before being compressed. The invention effectively solves the problems of ammonia corrosion and leakage, has the advantages of high sealing property, high transmission efficiency, low operation noise and the like, is particularly suitable for ammonia refrigeration scenes with medium and small cooling capacity and high pressure ratio, and fills the technical blank in the field.

The utility model relates to an electric appliance module assembly of a refrigeration compressor, which comprises a plastic shell, and an overheat overload protector, a PTC (Positive Temperature Coefficient) starting relay and an operation capacitor are arranged in the plastic shell. The overheat and overload protector, the PTC starting relay and the operation capacitor are arranged in the same shell to form an electric appliance module assembly, and the electric appliance module assembly is externally provided with two groups of wiring terminals: one group of wiring terminals forms a power supply connecting end by an L insertion piece and an N insertion piece, and the other group of wiring terminals forms a compressor connecting end by a C insertion hole, an S insertion hole and an M insertion hole; one side of the overheat overload protector is connected with the L insertion sheet, and the other side is connected with the C insertion hole; after the PTC starting relay and the operation capacitor are connected in parallel, one side is connected with the N insertion piece and the M insertion hole, and the other side is connected with the S insertion hole. The electric appliance module assembly of the refrigeration compressor adopts the flame-retardant plastic shell, is small in size and simple in structure, reduces the product raw material cost and the installation labor cost, and is convenient to install and use.

The utility model discloses an efficient refrigeration compressor wire tube condenser, which comprises a condenser body, an air inlet, an air outlet, an air inlet, an air outlet, an air inlet, an air outlet, an air outlet, an air inlet and an air outlet and is characterized in that the condenser body is provided with an inlet end and an outlet end, and a plurality of parallel condensing pipeline parts are arranged between the inlet end and the outlet end; the heat dissipation wires are wound on the condensation pipeline part, and the condensation pipeline part is provided with a plurality of heat dissipation wires which are arranged at equal intervals in the width direction of the condensation pipeline part; the bracket is used for supporting the condenser body; and the intervals of the heat dissipation wires on the condensing pipeline parts which are sequentially arranged from the inlet end to the outlet end are gradually increased. Compared with the prior art, the wire tube condenser solves the problem of low heat dissipation efficiency caused by consistent distribution density of heat dissipation wires on multiple layers of condensation pipelines in an existing wire tube condenser.

The invention relates to the field of refrigerating systems, and discloses an ionic liquid additive, a preparation method of the ionic liquid additive, refrigerating machine oil and a working fluid composition for a refrigerating machine. The ionic liquid additive has a structure as shown in a formula 1, wherein R1 and R2 are independently selected from C1-C10 alkyl groups. The invention provides a novel ionic liquid additive, the ionic liquid additive comprises BF4-anions and cations optimized and improved based on a guanidine structure, the BF4-anions and the cations are synergistically used for refrigerating machine oil, excellent wear resistance and metal stability can be shown, the friction coefficient of a friction pair can be remarkably reduced, and the ionic liquid additive has excellent thermal stability; the ionic liquid additive has the non-volatile characteristic, almost has no vapor pressure, has the characteristics of odorlessness, non-combustibility and the like, is environment-friendly, has good oil solubility in the base oil, and is suitable for being used as an anti-wear additive of the refrigerating machine oil; formula 1.

The utility model discloses a piston type refrigeration compressor with overheating protection, including compressor main part and casing, both sides of casing are equipped with through -hole, and casing is through the through -hole and is equipped with in the outside of compressor main part, and the one end vertical of casing is equipped with the air outlet pipe, and the other end is equipped with the air inlet pipe, and the one end of air inlet pipe is installed with the liquid storage shell away from casing, and the center of liquid storage shell bottom surface is equipped with the air inlet hole, and the pipeline is installed in the air inlet hole, and the inside installation of pipeline has the heat dissipation fan, and the liquid storage groove is formed between pipeline and liquid storage shell, and a plurality of ultrasonic atomizing pieces are installed in the liquid storage groove. The utility model discloses simple structure, and the wind of heat dissipation fan produces can be discharged from the air outlet pipe to the outer wall of casing and compressor main part upwards, and along with the improvement of heat, the water mist of ultrasonic atomizing piece can be blown into the casing, and until along the air outlet pipe and is discharged, through the contact of water mist and compressor main part and with the contact of casing inside air, can quickly absorb its heat, to increase the cooling efficiency.

1. Name of the product in this design: Cover (Refrigeration Compressor). 2. Purpose of this design: For use in refrigeration compressor parts. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention discloses a highly stable binary refrigeration compressor unit, comprising: a base, an evaporator mechanism, a condenser, a liquid receiver, a first compressor, a second compressor, an oil separator, a dryer filter, a first solenoid valve, a first outlet throttling valve, a first return throttling valve, a check valve, a plate heat exchanger, a second solenoid valve, a second outlet throttling valve, and a second return throttling valve. The evaporator mechanism is located on the outer right side of the base, and its interior includes adjustable evaporator components, adjustment components, and auxiliary heat exchange components. This highly stable binary refrigeration compressor unit can achieve a matching relationship between the compressor, condenser, throttling valve, and evaporator, providing an accurate basis combining theoretical calculations and practical application heat absorption and release coefficients, achieving optimal configuration of the entire refrigeration system. Furthermore, it can instantly adjust the evaporator's operating efficiency according to actual needs, achieving energy saving and noise reduction.

The ice-making water storage barrel comprises a water barrel body, a refrigeration compressor, a cold water tower, an expansion valve and a capillary tube, the water barrel body comprises an outer water barrel and an inner water barrel, the inner water barrel is located in the outer water barrel, a refrigeration pipe is located between the outer water barrel and the inner water barrel, a water inlet bin is arranged on the inner water barrel, and a water outlet bin is arranged on the outer water barrel. A plurality of first through holes are formed in the water inlet bin and communicated with the outer water bucket and the inner water bucket, an air bag is arranged in the water inlet bin and connected with an air inlet pump and an air extracting pump of the outer water bucket, and the refrigeration compressor can make ice from water in the water bucket body through the condenser, the expansion valve and the capillary tube. In the ice making process, the air bag is filled with air, the first pass is closed, when ice making is stopped, the air bag discharges air to flow out of the first pass, ice melts and enters the inner water bucket, water in the inner water bucket is cooled, the structure can prolong the refrigeration time and improve the refrigeration efficiency, and the operation mode of ice making is simple.

The utility model relates to the technical field of sump oil tail gas recovery, in particular to an oil-gas freezing recovery device of a sump oil ultrasonic separation device, which comprises a recovery tank and a separation tank, a recovery mechanism is arranged in the recovery tank, a separation mechanism is arranged in the separation tank, one side of the recovery tank is connected with an oil-gas pipe, and the other side of the recovery tank is connected with an oil-gas pipeline. According to the oil-gas recovery device, tail gas collection, pressurization and oil-gas freezing recovery are conducted on the dirty oil ultrasonic separation device, light gas is changed into liquid gas, oil-gas recovery is achieved, the oil-gas recovery efficiency is improved, the oil-gas recovery efficiency is improved, the oil-gas recovery cost is reduced, and the oil-gas recovery efficiency is improved. The heating cavity is arranged below the precooler, the first-stage condensation box and the second-stage condensation box, heat of the heating cavity comes from high-temperature overheated steam exhausted by the refrigeration compressor, and the steam is used for heating condensate oil, so that the exhaust temperature of the compressor is reduced, the equipment is more energy-saving, the oil temperature of the oil outlet pipe is increased, and meanwhile, the oil outlet pipe is prevented from being blocked by ice.

This utility model belongs to the field of evaporator technology and discloses a high heat exchange efficiency microchannel heat exchange structure ice mold evaporator, including an evaporator body. Multiple microchannel heat exchange tubes are fixedly installed on the inner side of the evaporator body, and multiple microchannel holes are opened at the bottom of the evaporator body. Diversion pipes are fixedly installed on the left and right sides of the evaporator body. The comprehensive application of the microchannel heat exchange structure, inner surface strengthening treatment, and outer surface fin design significantly improves the heat exchange efficiency of the evaporator. Compared with traditional evaporators, the ice-making speed can be increased, producing the same amount of ice in a shorter time, meeting the demand for rapid ice making. High heat exchange efficiency means that, under the same ice-making capacity, the required refrigeration compressor running time is shortened, and energy consumption is reduced. Actual testing shows that using the evaporator of this utility model reduces the energy consumption of the ice-making system, effectively reducing operating costs.

The invention discloses a refrigeration compressor based on stable noise reduction, and relates to the technical field of compressors. The air compressor comprises a compressor shell, an exhaust pipe is fixedly installed at the top of the compressor shell, a liquid storage device is arranged on one side of the compressor shell, and a suction pipe and an air conveying pipe are fixedly installed at the top end and the bottom end of the liquid storage device correspondingly. By arranging the annular damping liquid bag, large vibration can be generated when the motor assembly in the compressor shell works, except for a silencer and a damping cover plate of the motor assembly, the compressor shell with high-frequency vibration can continuously extrude the inner walls of all positions of the annular damping liquid bag, and the damping effect of the motor assembly is improved. The annular damping liquid bag in which lubricating oil is stored deforms in real time, and then a flexible buffering effect is exerted on the compressor shell by means of the counter-acting force of internal hydraulic pressure, so that the damping and noise reduction effects are achieved, the stability of the compressor shell during working is improved, and the problem that energy consumption is too high due to the poor steady state is solved.

An environmental chamber for an ice water impact test belongs to the field of test equipment and comprises a chamber body, a simulation chamber and an equipment chamber are arranged in the chamber body, a heating unit, a cooling unit and a pure water unit are arranged in the equipment chamber, a rotary supporting seat and a spray head are arranged in the simulation chamber, a refrigerating unit is further arranged in the equipment chamber, and the heating unit and the cooling unit are both communicated with the interior of the simulation chamber. The water purification unit comprises a heat preservation water tank, the heat preservation water tank is connected with a water purification machine through a first pipeline, and the heat preservation water tank is connected with the spraying head through a second pipeline; the refrigeration compressor is respectively connected with the first evaporator and the cooling unit through the refrigeration pipeline and the electric three-way valve, so that the environmental chamber has an ice water impact function, the availability of the environmental chamber is increased, the vacancy rate of equipment is reduced, a special ice water impact test box does not need to be additionally purchased, and the equipment purchase cost is saved.

The utility model discloses an experiment table for researching thermal performance of various floor radiant heating systems, and relates to the technical field of floor radiant heating experiments. Comprising an artificial environment chamber used for simulating an outdoor environment, a box body and a refrigeration compressor unit are arranged in the artificial environment chamber, a control cabinet is arranged outside the artificial environment chamber, and an experiment assembly is arranged in the box body; the box body comprises a bottom plate assembly, and the bottom plate assembly is detachably connected with a side plate assembly. According to the utility model, through the bottom plate assembly and the side plate assembly, rapid building can be carried out in an artificial environment room, determination can be carried out through the bottom plate assembly and the side plate assembly according to parameters such as pipeline layout, water supply temperature, system capacity and the like in the floor radiation heating system, and the performance of the floor radiation heating system is verified; therefore, the stability and the reliability of the system in actual operation are ensured.

The utility model belongs to the technical field of compressors, and particularly discloses a permanent magnet motor stator assembly of a mixed magnetic conductive material for a compressor and a refrigeration compressor. The whole permanent magnet motor stator assembly adopts a sandwich type structure, the outer layer is the stator iron core made of the silicon steel material, and the silicon steel material provides appearance support; the mounting grooves are formed in the connecting positions of the stator yoke and the stator teeth, the filling blocks in the mounting grooves are made of amorphous materials, the shape is simple, and stamping and machining are easy. In addition, packaging sheets are arranged at the two ends of the stator core, so that the amorphous material is prevented from being damaged due to external collision. According to the permanent magnet motor stator assembly of the utility model, the amorphous material and the silicon steel material are adopted as the mixed magnetic conductive material, so that the iron core loss of the tooth yoke part in the permanent magnet motor stator assembly can be reduced, and therefore, the motor efficiency can be improved, performance improvement can be ensured to the greatest extent, and the assembly can be compatible with the existing mechanical structure; and rapid use and mass production are facilitated.

1. Name of the designed product: totally enclosed piston refrigeration compressor (3). 2. Use of the designed product: for refrigeration compression gas. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view.

The invention relates to the technical field of compressor shell machining, and discloses a refrigeration compressor shell burr-free machining device and a burr-free machining method.The refrigeration compressor shell burr-free machining device comprises a machining table, supporting frames are slidably connected to the inner walls of two first limiting sliding grooves correspondingly, and arc-shaped mounting frames are fixedly arranged at one ends of the two supporting frames correspondingly; second limiting sliding grooves are formed in one sides of the two arc-shaped mounting frames correspondingly, a gear ring is fixedly arranged on one side of the outer wall of the arc-shaped moving strip, gears are rotationally connected to the inner walls of the two first mounting grooves correspondingly, a connecting frame is fixedly arranged on one side of the arc-shaped moving strip, and a grinding wheel is rotationally connected to the bottom of the connecting frame. A gear penetrates through a connecting groove to be meshed with a gear ring so as to drive an arc-shaped moving strip to slide in a communicated second limiting sliding groove, a connecting frame at the upper end of the gear drives a grinding wheel to move and grind around the edge of a shell, burrs on the outer edge of the shell are fully ground, manual grinding is not needed, and the purpose of removing the burrs can be achieved immediately after die-casting forming; the compressor shell machining efficiency is improved.

A stator of an electric motor for driving a refrigerant compressor including a stator core, a coil connecting device with a base plate as a support element for connecting elements, a first connecting element installed on the base plate, which is linked via connection elements to a first wire end of each coil or each coil strand and thus connects all coils or coil strands to each other, and further connecting elements installed on the base plate, each having connection elements, which are linked to second wire ends of the coils or coil strands of a phase and thus connect all coils or coil strands of this phase to each other, the coil connecting device being linked on wire ends of the wound coils or coil strands in such a way that a gap remains between base insulation and the coil connecting device.

The utility model relates to low temperature crystallization technical field, and disclose a kind of low temperature crystallization device of convenient energy saving, including base, the top end of base is fixedly connected with base at left side place close, the middle part of base is fixedly sleeved with double-layer heat preservation crystallization jar, the top end of double-layer heat preservation crystallization jar is fixedly connected with protective shell, the top end middle part of base is fixedly connected with support seat, the top end right side of base is fixedly connected with mixing tank, the rear side of double-layer heat preservation crystallization jar is equipped with refrigerant outlet, and then backflow to refrigeration compressor through refrigerant outlet, pass through the flow of multiple-point temperature sensor data adjustment, the accurate cooling crystallization of mixed solution in double-layer heat preservation crystallization jar, open electric valve two, high temperature refrigerant is transferred to the heat preservation layer of mixing tank through high temperature refrigerant pipe, heat exchange is carried out to the medical intermediate mixed solution to be preheated, make medical intermediate mixed solution temperature rise, simultaneously make high temperature refrigerant cool, it is favorable to improve energy utilization, guarantee the development demand of energy saving and cost reduction of pharmaceutical industry.

This invention discloses a refrigeration compressor with protective functions. The mounting base includes four adjusting plates, two first telescopic components, and two second telescopic components. By adjusting the lengths of the first and second telescopic components, the positions of the four adjusting plates can be adjusted, allowing the four shock-absorbing components to correspond to the connection holes of the connecting seats of the refrigeration compressor body of different models. The shock-absorbing components provide good shock absorption. Simultaneously, mounting brackets are provided on the two first telescopic components, and a cooling fan is provided on the upper surface of the mounting frame of the mounting brackets. This allows heat to be drawn away from the refrigeration compressor body and discharged through the exhaust duct. The air guide component in the exhaust duct can be selected to discharge hot air from the end with better heat dissipation, depending on the actual installation situation, thus preventing the refrigeration compressor body from overheating.

The invention discloses an evaporative cooling type nitrogen cooling device for an underground coal mine, and belongs to the technical field of cooling devices. A cooling system and an air flow and spraying system are arranged in the device shell; the cooling system comprises an evaporative condenser, a screw type refrigeration compressor, an oil separator, a liquid storage device, a shell-and-tube evaporator and a three-phase asynchronous motor, the three-phase asynchronous motor is connected with the screw type refrigeration compressor, the screw type refrigeration compressor is connected with the oil separator, the oil separator is connected with the evaporative condenser, the evaporative condenser is connected with the liquid storage device, and the liquid storage device is connected with the shell-and-tube evaporator. The liquid storage device is connected with the shell-and-tube evaporator, and the shell-and-tube evaporator is connected with the screw refrigeration compressor; the air flow and spraying system comprises a mining fan, a mining water pump, a spraying water tank and a spraying pipe, the spraying water tank is connected with the mining water pump, the mining water pump is connected with the spraying pipe, and an air blowing opening of the mining fan is aligned with the evaporative condenser. The defect of independent heat removal of air and water flow is overcome, coupling sufficient heat exchange is achieved, and stable operation of a unit is guaranteed.

The invention provides a refrigerating system and an oil return control method. The system comprises a refrigerating compressor, an oil separator, a condenser, a throttling device and an evaporator which are connected with one another to form a refrigerating loop. The enrichment device is connected into the refrigerating circuit, a containing cavity for containing a mixture is formed in the enrichment device, and the mixture mainly comprises lubricating oil, a gaseous refrigerant and a liquid refrigerant; and the oil product monitoring module is connected with the enrichment device and used for detecting indexes of the mixture and adjusting the connection state of the enrichment device and the refrigeration compressor and the connection state of the enrichment device and the oil collector according to the indexes. The enrichment device and the oil product monitoring module connected with the enrichment device are arranged in the oil return system, real-time monitoring and automatic recycling of lubricating oil products in the refrigerating system are achieved, recycling or discharging of the lubricating oil is judged by detecting the quality of the oil products, the flowing direction of the lubricating oil is adjusted, the use range of the return oil is widened, and the oil return system has the advantages of being simple in structure and convenient to use. And stable operation of the refrigeration compressor is protected.