45results about How to "Short cycle path" patented technology

The invention discloses a cooling apparatus used for a machine cabinet and the machine cabinet. According to a specific implementation way of the cooling apparatus, the cooling apparatus comprises a heat exchanging coil, a liquid supply pipe, a liquid return pipe, a cooler, a fan, and a fan control board, wherein the heat exchanging coil is arranged on the air-outlet side of the machine cabinet; the liquid supply pipe is communicated with the output of the cooler and the input of the heat exchanging coil, and used for conveying the coolant output by the cooler to the heat exchanging coil; the liquid return pipe is communicated with the output of the heat exchanging coil and the input of the cooler, and used for enabling the coolant output by the heat exchanging coil to back flow to the cooler; the cooler is used for cooling the coolant that is back flow from the liquid return pipe and outputting the cooled coolant to the liquid supply pipe; the fan is arranged on the air-outlet side of the heat exchanging coil, and used for forming air flow in an air outlet direction; and the fan control board is arranged in the air flow direction, and used for controlling the fan actions to form the air flow. Due to the implementation way, the circulating path of cooling air is shortened, and the thermal dissipation efficiency of the machine cabinet and a machine room is improved.

The invention relates to an oil separator as well as a compressor and a refrigerating system using the oil separator. The oil separator is connected between the compressor and a condenser and comprises a cylinder, a gas inlet pipe, a gas outlet pipe and an oil return pipe, wherein the gas inlet pipe is connected with an exhaust pipe of the compressor, the gas outlet pipe is connected with the condenser, one end of the oil return pipe extends into the cylinder, and the other end of the oil return pipe is connected with an oil sump of the compressor. According to the technical scheme, the technical problem of compressor oil shortage due to the fact that oil and gases in refrigerants are not separated thoroughly in existing compressors and refrigerating systems is effectively solved.

The invention provides an air conditioner indoor unit, which comprises an indoor unit case and a fresh air assembly, wherein a rear plate of an air outlet housing of the fresh air assembly is providedwith a turbid air outlet for communicating with a turbid air exhaust pipe and a fresh air inlet for communicating with a fresh air intake pipe, a side plate of the air outlet housing of the fresh airassembly is provided with a turbid air inlet for communicating with the interior of a room, and the turbid air inlet and the turbid air outlet form a turbid air duct. The turbid air inlet and the turbid air outlet are arranged in such a way that the circulation path of the indoor air is increased, the temperature change of the indoor environment is slow, and the temperature experience of the users is improved. The fresh air inlet is connected with a fresh air duct leading to the outside of the fresh air assembly, and the turbid air duct and the extend direction of the fresh air duct intersectwith each other, so that the air conditioner indoor unit prevents fresh air just discharged into the room from being discharged to the outside during operation due to the adoption of the arrangementmanner, thereby improving the efficiency of gas exchange.

A test unit comprises main loop, refrigerating loop, hot water circulating loop, ethylene glycol circulating loop and control station. It is featured as connecting main loop to hot water circulating loop through high pressure heat exchanger, to ethylene glycol circulating loop through low pressure heat exchanger; connecting ethylene glycol circulating loop to refrigerating loop through ethylene glycol box. The main loop comprises magnetic pump, mass flow meter, refrigerant flowing path for low and high pressure heat exchanger, test section, liquid container, filter and by pass valve.

The invention provides a solution humidity-regulation air treatment system utilizing geothermal hot spring resources and a treatment method for performing dehumidification and humidification on indoor air. According to the solution humidity-regulation air treatment system, the geothermal hot spring resources are directly utilized as a heat source to achieve regeneration of a humidity regulating solution and accordingly conversion energy sources such as electric energy are avoided so as to achieve energy conservation and emission reduction; meanwhile humidity regulating treatment and temperature regulating treatment on treated air are separated from each other through structural optimization and accordingly refrigeration coefficients of a surface air cooler can be improved, the efficiency of the temperature regulating treatment and the humidity regulating treatment can be improved, the energy consumption of the surface air cooler can be reduced, and energy sources can be saved; dual functions of cooling dehumidification and warming humidification can be achieved and the solution humidity-regulation air treatment system can be suitable for summer and winter air conditioning just through simple conversion control and accordingly the problem that solution humidity-regulation air conditioning systems are single in function in the prior art is solved and the market application prospect of the solution humidity-regulation air treatment system is extended.

The invention discloses a light-gathering all-glass heat pipe type evacuated solar collector tube, which belongs to the technical field of solar energy heat utilization. The evacuated solar collector tube comprises an internal glass tube, an external glass tube and a glass butt tube, wherein the internal glass tube and the external glass tube are sleeved together and are eccentrically arranged, one ends of the glass tubes are airtight and are hemispheric, the other ends of the glass tubes are hermetically sealed in an annular shape, the space between the internal glass tube and the external glass tube is vacuumized, the external glass tube is provided with a reflecting aluminum mirror surface, the internal glass tube is plated with a selective absorbing coating, the middle part of the internal glass tube is butted with the glass butt tube to form a glass heat tube, the glass butt tube is a condensation section, a hemispherical part of the internal glass tube connected with the glass butt tube in a sealing mode and a part close to the hemispherical part defineform an evaporation section, the hemispherical part of the internal glass tube is provided with an exhausting sealing-off nozzle of the evaporation section, and a getter is fixed at the hemispherical end part of the internal glass tube. According to the solar collector tube, a hot-water circulation path is shortened, the heat exchange efficiency is high, water in the tubes can also be utilized, and the problem that the internal glass tube is broken because the internal glass tube is too long and hot-water circulation is poor is avoided.

The invention discloses an overall efficient heat dissipation system of a high-power-density cabinet. The overall efficient heat dissipation system of the high-power-density cabinet comprises a pump-driven two-phase loop high-power chip direct heat dissipation system and a cabinet air cooling system. The cabinet air cooling system comprises a refrigerant circulation loop and an in-cabinet air circulation loop. In order to cope with different circulation working conditions, the refrigerant circulation loop can be divided into two paths, one path is a pump-driven two-phase circulation loop, andthe other path is a steam compression circulation loop. The pump-driven two-phase loop high-power chip direct heat dissipation system can carry out fixed-point heat dissipation on main heating elements such as a CPU and a GPU in a server, and the cabinet air cooling system can carry out air cooling heat dissipation on other heating elements of the server. Fixed-point heat dissipation of the high-power-density chip and air cooling heat dissipation of the low-power-density component are combined, on one hand, fixed-point heat dissipation can be directly conducted on the high-power chip, on the other hand, dependence of the server cabinet on air conditioner cooling can be avoided, and the problem of overall heat dissipation of the server cabinet is efficiently solved.

The invention relates to a longitudinal-circulation autoclave provided with an external thermal-cold cycling device. The longitudinal-circulation autoclave comprises a main tank body, air suction connection pipelines, air blowing connection pipelines and the thermal-cold cycling device, wherein the main tank body is connected with airflow distributors through the air suction connection pipelines and the air blowing connection pipelines respectively; the thermal-cold cycling device is located outside the main tank body. According to the autoclave with the structure, the complicated heating, cooling and circulating device is moved out of the main tank body, and loading rate is remarkably increased; the circulation path is shortened by means of a new longitudinal-circulation mode, and under cooperation with the airflow distributors, the temperature distribution in the tank is uniform, vertical temperature difference is reduced, and front and back temperature difference is almost zero; with adoption of an electromagnetic heating mode with higher efficiency, not only is energy saved, but also efficiency is remarkably improved; the external thermal-cold cycling device can be wholly replaced and dismounted for maintenance due to presence of spare parts, and the condition of production delay caused by equipment failure maintenance is avoided.

The invention disclose an electronic toilet seat with water heating seat cushion, which comprises: a body; a heating water tank which is positioned inside the body; a seat cushion which is positioned outside the body and an inner cavity of which is annularly perforated; a seat cushion inner cavity water feeding pipe which is connected with an outlet of the heating water tank and a seat cushion inner cavity water feeding connecting port; at least one seat cushion inner cavity exhaust pipe one end of which is communicated with the inner cavity of the seat cushion, a communication port of which is positioned at the rear part of the inner cavity of the seat cushion and the other end of which is communicated with the heating water tank; a seat cushion water returning pipe which is communicated with the seat cushion inner cavity water drainage connecting port and the heating water tank, wherein both the water feeding connecting port and the water drainage connection port are positioned at the rear part of the inner cavity of the seat cushion; the electronic toilet seat is characterized by further comprising a guide pipe positioned inside the inner cavity of the seat cushion, one end port of the guide pipe is communicated with the water feeding connecting port, and the other end port of the guide pipe stretches to the front part of the inner cavity of the seat cushion. With the help of the improvement, the gas inside the inner cavity of the seat cushion can be better exhausted during water filling so that the seat ring better keeps warm uniformly and the capacity of the inner cavity of the seat cushion is fully utilized, besides, the cost is low.

The invention discloses injection molding equipment with the high-efficiency cooling rate. The injection molding equipment comprises a feeding opening, an injection mold is installed on the left sideof the feeding opening, a cooling bin is connected to the left side of the injection mold, a water storage bin is fixedly connected to the bottom end of the injection mold, and an injection molding opening is connected to one end of the right side of the injection mold; and a cooling pipe is arranged in the injection molding opening, a liquid bin is connected to the bottom end of the injection molding opening, a sliding groove is formed in the liquid bin, a water inlet pipe is fixedly connected to the interior of the injection molding opening, and a sliding block is fixedly connected to the outer surface of the water inlet pipe. According to the injection molding equipment, a large amount of heat in the equipment is taken away by accelerating circulation of cooling water, meanwhile, the situation of the inconsistent interior is avoided, the circulation path of the cooling water is greatly shortened, the cooling effect of the cooling water is greatly improved, plastic in a melting statecan be separated notably while efficient work is achieved, and the plastic which is not sufficiently molten is sufficiently molten.

The invention provides a shipborne circulating aquaculture system. The shipborne circulating aquaculture system comprises a plurality of aquaculture tanks and a plurality of circulating water treatment systems cooperating with the aquaculture tanks, wherein the four end corners of each aquaculture tank are provided with water inlet ports respectively, the water inlet ports are connected with waterinlet pipes, and the water inlet pipes are connected with a water inlet main pipe; the center of the bottom of each aquaculture tank is provided with a water outlet port, and the water outlet port isconnected with a water outlet pipe provided with two water outlet passages; each circulating water treatment system comprises a biological filter, a CO2 remover, an ultraviolet ray sterilizer, oxygenation cones, circulating pumps and a water collecting tank; each water collecting tank allows the corresponding circulating pumps to pump water, the number of the corresponding circulating pumps is two, an outlet of one of the circulating pumps is connected with inlets of the corresponding oxygenation cones, and outlets of the corresponding oxygenation cones are connected to the water inlet main pipe; an outlet of the other circulating pump is connected to the water inlet main pipe. The shipborne circulating aquaculture system has the advantages that the structure is compact, the system is suitable for a shipborne environment, the volume use ratio is high, and the circulating water treatment systems are adopted for keeping the water environments in the aquaculture tanks in a good range allthe time.

The invention provides a water source heat pump air conditioner system and a control method thereof. The water source heat pump air conditioner system achieves independent temperature and humidity control through a simple system frame structure, two sets of water source heat pump units do not need to be installed, a solution dehumidifying device does not need to be added, the requirement for the unit capacity configuration of the system is relatively low, the initial investment cost is easily reduced, gradin utilization can be conducted on the refrigerating capacity of source water by the system in summer, the operation efficiency of the system is improved, even if the temperature of source water is below 15 DEG C, the stable operation of the system can also be kept, and therefore low-heat-source water energy can be effectively utilized. The water source heat pump air conditioner system is used in combination with the control method of the water source heat pump air conditioner system, the control operation is simple and convenient, the heat exchange circulation process is simple, the circulation route is short, the operation efficiency and stability of the system are easily improved, the control flexibility is high, independent control can be conducted according to the change of fresh air loads and indoor loads, the operation efficiency of the system is improved, and the operation energy consumption is lowered.

The invention relates to an oil separator as well as a compressor and a refrigerating system using the oil separator. The oil separator is connected between the compressor and a condenser and comprises a cylinder, a gas inlet pipe, a gas outlet pipe and an oil return pipe, wherein the gas inlet pipe is connected with an exhaust pipe of the compressor, the gas outlet pipe is connected with the condenser, one end of the oil return pipe extends into the cylinder, and the other end of the oil return pipe is connected with an oil sump of the compressor. According to the technical scheme, the technical problem of compressor oil shortage due to the fact that oil and gases in refrigerants are not separated thoroughly in existing compressors and refrigerating systems is effectively solved.

The invention discloses a cooling roller in the technical field of film production equipment. The cooling roller comprises a guide roller; a cavity is formed in the guide roller; one end of the guide roller is connected with a first flange, and the other end of the guide roller is connected with a second flange; a first bearing is fixedly arranged on the first flange; a second bearing is fixedly arranged on the second flange; multiple annular cooling pipes are arranged in the cavity in sequence; the cooling pipes and the guide roller are coaxial; the outer walls of the cooling pipes cling to the inner wall of the guide roller; water inlets and water outlets are formed in the walls of the cooling pipes, and are symmetrically arranged; a water inlet pipe and a water outlet pipe which are coaxial with the guide roller are arranged in the cavity; a first connecting pipe communicates between the water inlets and the water inlet pipe; a second connecting pipe communicates between the water outlets and the water outlet pipe; the water inlet pipe is rotationally connected with the first bearing; and the water outlet pipe is rotationally connected with the second bearing. The multiple annular cooling pipes respectively cool own areas clinging to the inner wall of the guide roller; and the guide roller is uniformly cooled to facilitate molding of thermoplastic films.

The invention discloses a breeding house. The breeding house comprises a breeding house body, a ventilating window is arranged on the second side wall of the breeding house body, an excrement leakingplate is arranged on the bottom wall of the breeding house body, the ventilating window is communicated with a second wet curtain, the excrement leaking plate is communicated with a trench arranged atthe lower portion of the breeding house body, and a second fan is arranged at an opening of the trench. In the embodiment, air outside the house is cooled by the second wet curtain and then enters the breeding house body (a breeding unit) through the ventilation window, and the second fan pumps out air in the trench, so that negative pressure is formed in the trench, and the air in the breeding house body further flows into the trench through the excrement leaking plate; and therefore, an air circulation path from the air outside the house to the second wet curtain to the breeding house bodyto the trench to the second fan to the air outside the house is formed. The ventilation manner is called transverse ventilation, air flows between the two shorter side walls, the circulation path is shorter, airflow is not prone to running away, ventilation is uniform, and cooling is facilitated.

The invention relates to a reliable connection mode of a motor circulation water path. The reliable connection mode comprises a front end cover, a rear end cover, a shell, a sealing gasket and the like. Circulating water channels are arranged in the front end cover and the rear end cover, and water inlet and outlet nozzles are distributed on the two sides of the front end cover and the rear end cover. A circulation water channel is arranged in the shell, and water inlet and outlet holes are distributed in the two end parts of the shell. The flow channel of the end covers and the flow channel of the shell can be reliably connected. The connection mode is suitable for water path connection when the end covers and the shell both have circulation water channels, and other similar pipeline connection mode.

The invention disclose a material sterilization machine which comprises a buffer tank, a dosing device, a degassing-section temperature-rising heat exchanger, a degasser, a sterilization-section heatexchanger, a heat-recovery-section heat exchanger, a subsectional cooling mechanism and a steam-section heat exchanger. A degasser output pipe of the degasser can communicate with a tube pass input end of the sterilization-section heat exchanger or can communicate with the buffer tank; the output end of the steam-section heat exchanger can communicate with a shell pass input end of the sterilization-section heat exchanger or can communicate with a shell pass input end of the degassing-section temperature-rising heat exchanger; and a hot water output pipe of a hot water tank can communicate with a shell pass input end of the heat-recovery-section heat exchanger or can communicate with a shell pass input end of the steam-section heat exchanger. The material sterilization machine provided bythe invention has the advantages that the deploying time of each washing solution can be greatly shortened, and the time interval between each two adjacent washing steps is shortened, so that the washing time of the material sterilization machine is effectively shortened.

The invention discloses a reducing condensation all-glass heat tube type vacuum solar heat-collecting tube, and belongs to the technical field of solar heat utilization. The vacuum solar heat-collecting tube comprises an inner glass tube, an outer glass tube and a glass butt joint tube, wherein the inner glass tube and the outer glass tube are sleeved with each other and are eccentric, one ends of the inner glass tube and the outer glass tube are closed, the other ends are annually weld and sealed, and the inner glass tube and the outer glass tube are vacuumized; a reflecting aluminum mirror surface is arranged on the outer glass tube; a selective absorbing coating is coated on the inner glass tube; the middle part of the inner glass tube is in butted joint with the glass butt joint tube; the glass butt joint tube is a condensing section; a hemispherical part of the inner glass tube and the part close to the hemispherical part are evaporation sections; the hemispherical part of the inner glass tube is provided with an exhaust outlet sealed orifice of the evaporation section; and the hemispherical end of the inner glass tube is fixed with a getter. The external diameter of the glass butt joint tube is greater than the external diameter of the inner glass tube, and less than the external diameter of the outer glass tube. By the vacuum solar heat-collecting tube, the hot water circulation path is greatly shortened, the heat exchange efficiency is high, the water in the tube can be used, and the problem that the inner glass tube is ruptured caused by non-fluent hot water circulation because the inner glass tube is too long can be avoided.

The invention discloses a wastewater treatment system capable of realizing acid recycling. The system comprises a strong-basicity printing and dyeing wastewater treatment system, an odor collection device and a biological packed tower, wherein the strong-basicity printing and dyeing wastewater treatment system comprises a pH regulating tank; the strong-basicity printing and dyeing wastewater treatment system comprises an anaerobic tank; the biological packed tower is used for carrying out biological oxidation treatment on odor generated in the system through a biological oxidation method and oxidizing H2S in the odor into H2SO4; the biological packed tower comprises a first liquid outlet and a liquid accumulation device connected with the first liquid outlet through a first liquid outlet pipe; a second liquid outlet is formed in the liquid accumulation device; and the second liquid outlet is connected with the pH regulating tank through a second liquid outlet pipe. The system disclosedby the invention can effectively recycle acid and recycle sulfur in the sewage treatment system, so capital construction investment can be greatly reduced, resources are saved, and the system is environment-friendly.

The invention discloses a stator block, a stator assembly and a cooling system for the stator assembly. The stator block includes: a block body, the axial side of the block body is provided with a cooling air outlet; a stator core, the The stator core is connected to the radially outer end surface of the block body; the cooling unit is arranged in the block body, wherein the cooling unit introduces the hot air emitted by the stator core, After cooling, it is discharged from the cooling air outlet. The invention improves the assembly efficiency; under the same displacement, the air circulation path is shortened, the cooling circulation speed of the air flow is accelerated, and the cooling effect is improved; the cooling redundant sharing is adopted, and the economic benefit is improved; the maintenance area and electromagnetic The separation of areas improves the safety of generator operation and maintenance, simplifies the structure and facilitates the entry and exit of maintenance personnel, reduces the influence of heat generated in the electromagnetic area on the main bearing, and is beneficial to the processing and manufacturing of stator supports.

The invention relates to a constant-flow uniform-temperature heating module. The constant-flow uniform-temperature heating module comprises a module outer box body, a hot air pore plate is arranged atthe bottom of the module outer box body, a center control air suction cavity is formed in the hot air pore plate, uniform air layer plates used for balancing air flow are arranged on the two sides ofthe center control air suction cavity, a heating wire module body is arranged at the top in the module outer box body, a heat insulation plate is further arranged at the top of the module outer box body, and an air blowing motor assembly is further arranged on the heat insulation plate. Compared with the prior art, the constant-flow uniform-temperature heating module has much more advantages.

A pump device for pressurizing a fluid to be fed, comprises: a rotary shaft (22), a bearing (24, 25, 26) including a bearing surface adapted to face to the rotary shaft so that the rotary shaft is supported on the bearing surface in a rotatable manner, and an impeller (23) fixed to the rotary shaft to be rotatable with the rotary shaft so that the fluid is pressurized by a rotation of the impeller.

The invention relates to liquid-liquid mixing reaction precipitation devices, and in particular relates to a precipitation reactor for producing ultra-fine cerium carbonate. A main body of a kettle body is a cylinder body, wherein the lower end of the cylinder body is closed to form an inverse truncated cone shape, and the central part of a seal head at the bottom of the kettle body adopts an internal cone shape. According to the precipitation reactor disclosed by the invention, fluids in upper and middle areas form axial circulation, and the fluid in a bottom area of a crystallizer forms radial circulation so as to ensure that the crystallizer is large in internal circulation quantity and relatively short in mixing time, the shearing rate can be significantly increased, and micro-mixing and micro mass transfer of liquid-liquid phase reaction materials can be enhanced; areas with poor mixing cannot exist, deposited dead angles cannot be formed at the bottom, and precipitation particles are high in suspension efficiency and relatively uniform in distribution of solid hold-up; and good stirring effects can be achieved under relatively small stirring power, and the energy consumption can be reduced. Cerium carbonate prepared by using the precipitation reactor disclosed by the invention is relatively fine in particle size, narrow in particle size distribution range and relatively low in cost, and is suitable for industrial application.

The present disclosure relates to a thermal management system of a fuel cell vehicle, the thermal management system including: a cooling line configured to pass through a power electronic component of the vehicle and to allow a coolant to circulate therein; a cooling unit provided in the cooling line and configured to cool the coolant; a driving member disposed in the cooling line and configured to drive the vehicle; and a bypass line having a first end connected to the cooling line at a first point between the drive member and an outlet of the cooling unit, and a second end connected to the cooling line at a second point between the drive member and an inlet of the cooling unit, therefore, the beneficial effects of improving the cooling efficiency and the cooling performance and improving the safety and the reliability can be achieved.

The invention disclose an electronic toilet seat with water heating seat cushion, which comprises: a body; a heating water tank which is positioned inside the body; a seat cushion which is positioned outside the body and an inner cavity of which is annularly perforated; a seat cushion inner cavity water feeding pipe which is connected with an outlet of the heating water tank and a seat cushion inner cavity water feeding connecting port; at least one seat cushion inner cavity exhaust pipe one end of which is communicated with the inner cavity of the seat cushion, a communication port of which is positioned at the rear part of the inner cavity of the seat cushion and the other end of which is communicated with the heating water tank; a seat cushion water returning pipe which is communicatedwith the seat cushion inner cavity water drainage connecting port and the heating water tank, wherein both the water feeding connecting port and the water drainage connection port are positioned at the rear part of the inner cavity of the seat cushion; the electronic toilet seat is characterized by further comprising a guide pipe positioned inside the inner cavity of the seat cushion, one end port of the guide pipe is communicated with the water feeding connecting port, and the other end port of the guide pipe stretches to the front part of the inner cavity of the seat cushion. With the help of the improvement, the gas inside the inner cavity of the seat cushion can be better exhausted during water filling so that the seat ring better keeps warm uniformly and the capacity of the inner cavity of the seat cushion is fully utilized, besides, the cost is low.

The invention discloses an experimental device and a test method for a deep ice layer electric mechanical core drill circulating system. The experimental device comprises a shaft, a drill, a water pump and a signal detecting device. The shaft is fixed on a base in a sealed manner. A top cover is disposed at the upper end of the shaft. A central connecting shaft is fixed on the base. The signal detecting device comprises two temperature sensors, a flow sensor, a pressure sensor, a rotation speed sensor, a magnet and a computer component. The test method includes the steps of firstly, measuring drilling fluid flow; secondly, measuring rotation speed of the drill; thirdly, measuring outlet pressure of the water pump; fourthly, measuring environment temperature outside the shaft; fifthly, dynamically displaying in real time through configuration software; sixthly, measuring related parameters. The experimental device and the test method has the advantages that corresponding data support is provided for deep ice layer electric mechanical core drill design optimization and water pump selection.

The invention provides a pipeline for a floor radiant air conditioner, and belongs to the field of building structures and air conditioners. The pipeline is a hollow pipeline with the dynamic characteristic meeting the requirement of steel bars of building structures, and can be used as a structural steel bar to be buried into a structure floor, and air-conditioning cold and hot water is led intothe pipeline, so that the requirement of a radiant air conditioner technology is met, and the pipeline plays a role as the structural steel bar; and therefore, the thickness of the floor and loads borne by the structure are reduced, and materials and cost are saved.

Disclosed are a cooling device for a machine cabinet, and a machine cabinet. The cooling device comprises: a heat exchange coil (110), arranged on the air-outlet side of a machine cabinet; a liquid supply pipe (120), in communication with an output opening of a cooler (140) and an input opening of the heat exchange coil (110), and used for conveying a coolant output by the cooler (140) to the heat exchange coil; a liquid return pipe (130), in communication with an output opening of the heat exchange coil (110) and an input opening of the cooler (140), and used for enabling the coolant output by the heat exchange coil (110) to flow back to the cooler (140); the cooler (140), used for cooling the coolant flowing back from the liquid return pipe and then outputting the cooled coolant to the liquid supply pipe (120); a fan (150), arranged on the air-outlet side of the heat exchange coil (110), and used for forming an air flow in an air outlet direction; and a fan control board (160), arranged in an air flow direction, and used for controlling the fan to act so as to form the air flow. The circulating path of cooling air is shortened, and the heat dissipation efficiency of the machine cabinet and the machine room is improved.

The invention relates to a scroll compressor, in particular to a scroll compressor and an oil-gas separation device thereof. The oil-gas separation device comprises an oil-gas fine separation assembly, a rear cover plate, a secondary separation cover plate, a coarse separation cover plate, a static disc, a movable disc and a machine body; an annular outer ring and a first air guide rib are arranged on the end face of the other side of the static disc; the coarse separation cover plate is arranged on the annular outer ring, and a coarse separation cavity is formed between the annular outer ring and the coarse separation cover plate; a coarse separation gas inlet is formed in the middle of the static disc; the rear cover plate is arranged at the tail of the machine body, a secondary separation cavity is formed between the rear cover plate and the machine body, and a coarse separation exhaust hole communicates with the secondary separation cavity; a second air guide rib is arranged on the end face of the inner side of the rear cover plate, and the secondary separation cover plate is arranged on the second air guide rib; a cavity is formed between the second air guide rib and the secondary separation cover plate, and an air inlet of the cavity communicates with the secondary separation cavity; and air outlet of the cavity penetrates through the inner side and the outer side of the rear cover plate; and the oil-gas fine separation assembly is arranged on the outer side of the rear cover plate. The oil-gas separation effect is improved.