112results about How to "Cooling" patented technology

The present invention relates to a fiber product having the performances of antibiosis, odor elimination, heat dissipation and cooling. The present invention comprises woven fabric, knitted fabric, non woven fabric film or a combination body of the fabric and the film, and is made by weaving continuous filament fiber or short fiber having various different cross section shapes, sizes, colors, structures, etc. The fiber adopts sub-micron or nanometer powder with high heat diffusion coefficient and low heat conduction coefficient, and is added into thermoplastic plastic grains in a quantitative way after being decentralized with an interfacial agent. The thermoplastic plastic grains are fully mixed with the sub-micron or nanometer powder with the high heat diffusion coefficient and the low heat conduction coefficient by a mixing machine or a kneading machine or by utilizing the chemical synthesis method, and then are made into masterbatch with a granulating machine, finally the fiber product having the functions of antibiosis, odor elimination, heat dissipation and cooling can be made by using the melting, and the dry and the wet spinning technologies and through the pre-designed spinneret.

The invention relates to an electronic control unit (14), in particular in motor vehicle braking systems, which is connected to a hydraulic unit (13) by means of a magnetic connector. Said electronic control unit comprises: an area formed by the housing walls (14'), said area being used to receive several valve coils (12) which are arranged in said area, a housing cover (8, 35), at least one first circuit board (31, 5) which is used to receive electric and / or electronic components and an electric contact part and one first heat conducting plate (9, 32) which is used to guide heat away from the electronic components. The first heat conducting plate is connected in a flat manner to the first circuit board, and at least one heat connecting element (4, 15) which produces a thermal bridge between the first circuit board(s) and the first heat conducting plates, is provided. The invention also relates to a pump drive unit which co-operates with said control unit, whereby a motor base plate (22), for the electronic power components of the motor, is provided. The invention further relates to an electrohydraulic control device, wherein one or several elongate heat conducting elements (172) are arranged, said elements being in contact with the hydraulic block (13) and the cooling element (9) in order to form a thermal bridge. One longitudinal side of the heat conducting elements (172) is connected, in a positive or non-positive fit, to the hydraulic block or to the cooling element (9) and the opposite longitudinal sides thereof (1712) are arranged on the hydraulic block or the cooling element without the detachable non-positive fit connection.

The invention relates to a dual clutch (1) having two friction clutches (3,4), having a central pressure-exerting plate (5) and having two pressure plates (24,25) which are axially movable relative to said pressure-exerting plate (5) with the interposition of the friction linings (28,29) of two clutch disks (26,27), which mesh with in each case one gearbox input shaft (21,22), of actuating devices (32,32a). Here, the pressure plates (24,25) are advantageously acted on by transmission elements (30,42,69,70) by the actuating devices (32,32a) directly without a lever action. Furthermore, for the cooling and lubrication of the actuating devices (32,32a) and the transmission elements (30,42,69,70), an annular chamber (58) can be formed which has an increased fluid volume.

The invention discloses a bell-less top distributing gear of furnace, belonging to technical field of metallurgical industry. The invention adopts sealed cooling, a water-cooling venturi tube with pipe laying and a water-cooling chassis. A motor drives a chute to rotate and tilt; wherein, the motor drives the nut of the ball screw assembly to rotate and then drives the lead screw and the lifting rotary frame connected with the lead screw to move up and down in order to achieve chute to tilt for Alpha angle. The invention has the advantages of high coaxiality, high transmitting precision, long service life of the critical component, easy manufacture, light weight and low cost. The tilting Alpha angle of the chute and the stationarity of the tilting movement of the chute can be checked during the producing process of the furnace by the invention. The invention can be used in charging operation of furnace roof and also is suitable for shaft furnace or smelting reduction furnace which need to feed from the roof to the closed space and distribute regularly.

The invention discloses a follow-up supporting tool bit device used for processing a deep hole, which comprises a tool seat and an excircle end face turning tool arranged on the tool seat and is characterized in that a tool body with a hollow structure is fixed in the front of the tool seat; the tool body with the hollow structure is in T-shaped threaded connection with a hollow boring bar; V-shaped blocks are respectively fixed at the front and rear ends of an outer cylindrical surface of the tool body with the hollow structure; 8-16 adjusting steel balls are respectively distributed in V-shaped grooves of the two V-shaped blocks; the adjusting steel balls are externally fixed by a retainer; and a radial locking nut butts against the end face of the V-shaped block and pushes the V-shaped block to move. When the V-shaped block moves, a radial force is generated to the steel ball to adjust the diameter of the outer ring of the steel ball and lead the diameter to be equal to the diameter of an inner hole processed by the excircle end face turning tool. Therefore, the device has the positioning function, the coolant flows through the hollow boring bar and the tool body with the hollow structure and is sprayed out from a coolant hole on the tool body, so that the device has the scrap discharging and cooling function in the hole of a workpiece, and can prevent the iron scraps from scratching the processed surface of the workpiece.

The invention relates to an electric motor with a housing, in which a stator arranged coaxially to a motor shaft and a rotor are arranged, and with a terminal box arranged on a circumferential wall of the housing, with electronic components being arranged in said terminal box, wherein, firstly, an aperture is provided between the terminal box and the housing, and secondly, an auxiliary fan impeller, which is connected fixedly to the motor shaft, is provided in the housing, such that, during operation of the electric motor, an air flow can flow from an interior of the housing into an interior of the terminal box and / or vice versa.

The invention discloses an aero-engine rectification cover hood anti-icing device adopting a loop type heat pipe and belongs to the field of protection of aero-engines. The aero-engine rectification cover hood anti-icing device comprises a loop type axial rotary heat pipe, wherein the axial rotary heat pipe sequentially comprises a condensation section, a heat insulation section and an evaporation section from front to back; the front end of the condensation section is fitted to an aero-engine rectification cover hood; the inner diameter of the front part of the condensation section is greater than that of the back part of the condensation section; the inner diameter from the evaporation section to the heat insulation section is gradually reduced; the inner diameter of the heat insulation section is greater than the maximum inner diameter of the condensation section; a liquid reflowing channel is communicated between the condensation section and the heat insulation section; an inlet of the liquid reflowing channel is located at the condensation section and an outlet of the liquid reflowing channel is located at the heat insulation section; a heating device is mounted on the evaporation section. The loop type axial rotary heat pipe is integrated on the inner surface of the aero-engine rectification cover hood so that generated heat is efficiently and stably transmitted to the surface of the aero-engine rectification cover hood, and anti-icing of the aero-engine rectification cover hood is realized.

The invention relates to a solar semiconductor air conditioning driving vehicle cabin, which comprises a vehicle cabin, a solar panel, a controller, a semiconductor refrigeration sheet and a heat radiation fin, wherein a plurality of square holes are arranged on the top of the vehicle cabin, a heat conduction plate is arranged on the inner wall on the top of the vehicle cabin, the semiconductor refrigeration sheet is placed in the square holes and is connected with the heat conduction plate, the heat radiation fin is arranged above the semiconductor refrigeration sheet, the solar panel is arranged on the top of the vehicle cabin and is connected with the controller through a conducting wire, a switch device is arranged on the controller, and the controller controls the semiconductor refrigeration sheet to realize the refrigeration or the heat generation. The solar semiconductor air conditioning driving vehicle cabin solves the problem that the refrigeration and the heat generation on the vehicle cabin in the prior art cannot be carried out by using environment-protection energy sources. The solar energy is used for supplying electricity for the semiconductor refrigeration sheet, and further, the refrigeration and the heat generation to the inside of the vehicle cabin are realized.

The invention discloses a quick warming device comprising a splint, a metal ceramic heating element, a sampling resistor, bidirectional silicon controlled, a control chip, a keying unit and an auxiliary circuit connected with the control chip, wherein the splint is used for heat load, and the metal ceramic heating element is installed in the splint; the sampling resistor is used for detecting voltage on the heating element to obtain a sampling voltage, and the other path detects the input voltage of mains supply; the control chip compares the sampling voltage with the input voltage and converts into the practical temperature value of the heating element; the control chip controls the conduction of the bidirectional silicon controlled according to the temperature variation rate of the heating element and the difference of the practical temperature value and a preset temperature value, thus regulating the heating of the heating element, and achieving the purpose of quickly and preciselywarming.

The invention discloses a temperature-adjustable thermostatic pad warm in winter and cool in summer. The thermostatic pad comprises a substrate and a temperature adjusting pad, wherein the temperature adjusting pad is a grooved three-dimensional fabric; one or more uniformly arranged grooves are formed in the bottom of the temperature adjusting pad; phase change material bags are placed in the grooves, and are sealed and packaged by adopting a high-strength flexible material; heating units are arranged at the bottoms of the phase change material bags. According to the thermostatic pad, a phase change material can change between a high-energy state and a low-energy state in the presence of the heating units and an air conditioner, so that the micro-climatic environment around a human body can be kept within a relatively constant and proper temperature range in different environments through the thermostatic pad, the requirement of the human body on comfort is met, and the thermostatic pad has warm keeping and cooling functions; necessary elasticity and support force are provided by a high-bending rigidity fiber layer of the raised part in the three-dimensional fabric, so that good pressure spreading effects are achieved, and the phase change material bags in the grooves can be protected; sufficient pores are formed in the raised part of the grooved three-dimensional fabric, so that high air permeability is ensured.

The invention belongs to the technical field of building materials and particularly relates to a fireproof heat preservation board. The fireproof heat preservation board comprises a foam heat preservation plate, a fireproof rubber plate, a jacking block, a steel plate and first hot melt adhesives, and the steel plate is fixed to the ground or a wall; the fireproof rubber plate is located between the foam heat preservation plate and the steel plate, and the fireproof rubber plate is coated with a fireproof layer; the first hot melt adhesives are used for bonding the edges of the foam heat preservation plate, fireproof rubber plate and steel plate, and the surface, bonded to the fireproof rubber plate, of the foam heat preservation plate is an arc-shaped plate; the jacking block is located between the fireproof rubber plate and the steel plate and used for jacking the fireproof rubber plate to make the fireproof rubber plate bent under stress, so that a first cavity is formed between thefireproof rubber plate and the steel sheet, and the fireproof rubber plate is automatically straightened and separated from the steel plate after the hot melt adhesives are heated and melted. The heat preservation and fireproof capability of the fireproof heat preservation board can be effectively improved, and flammable parts of the fireproof heat preservation board can be automatically ejectedout and detached when a fire disaster happens in order to make the fireproof heat preservation board isolated from a fire source.

The invention discloses a vehicle air conditioner and heat pump integrated system. The system comprises two subsystems: a refrigerant circulating system and a secondary loop system, wherein the secondary loop system comprises a first circulating pump, a first plate heat exchanger, a PTC water heater, a temperature air door and an air heating core body; the first circulating pump, the first plate heat exchanger, the PTC water heater and the air heating core body are connected by pipelines to form a cycle; and the air heating core body and the temperature air door are positioned in an air conditioner box. As the secondary loop system is adopted, the heating capacity of the heat pump system can be improved to the greatest extent; and meanwhile, the pressure on a high-pressure side of the refrigerant circulating system is reduced, so that the operating environment of a compressor is improved particularly when the compressor continuously works under a heating mode for a long time.

The invention relates to a jade round bar grain breaking machine. The machine comprises a rack, a rectangular groove is formed in the upper end of the rack, an air cylinder is arranged in the rectangular groove, the upper end of an air cylinder shaft of the air cylinder is connected with a work table, a fixed mounting base is arranged on the upper left side of the work table, a fixed bearing base is arranged on the fixed mounting base, a first-stage rotating shaft is arranged in the fixed bearing base rotatably, the right end of the first-stage rotating shaft is connected with a rotating mounting disc, clamps are arranged on the side face, away from the first-stage rotating shaft, of the rotating mounting disc in a longitudinal symmetry manner, each clamp is a clamping body which is formed by connection of two symmetrically-distributed arc bending rods through a shaft pin and rotates along the shaft pin, the shaft pins are connected with the rotating mounting disc through a connecting plate, a sliding rail is arranged on the upper right side of the work table, a sliding block is arranged on the sliding rail in a sliding manner, and a moving mounting base is arranged on the sliding block. The distance between cutting tools can be adjusted according to machining needs, and therefore the length of broken grains can be changed, and according to the length of a jade round bar, the position of the sliding block on the sliding rail can be adjusted.

A cooling arrangement for an electric machine (2) and at least one further component (4, 5) of an electric power unit: The cooling arrangement comprises an oil circuit (16), an oil pump (46) circulating oil to the electric machine (2), a first coolant circuit (6) configured to cool the further component (5) of the electric power unit, and coolant radiator arrangement (8a, 8b) in which the coolant in the first coolant circuit (6) is cooled by air, The oil circuit (16) comprises an oil radiator (46), an oil radiator fan (47) configured to provide an adjustable air flow through the oil radiator (46) and a heat exchanger (15) in which heat is transferred between the coolant in the first coolant circuit (6) and the oil in the oil circuit (16).

This invention is an insulated bag which is capable of heating or cooling drinks and food. In the bag fits drinks box and food box, to the outside of the boxes attached heating film or PTC plate and semi-conductor refrigerating plate. The boxes are wrapped with insulating material. To the top inside cover of the food box fixes a refrigerating fan for fast refrigeration. The power is provided by battery or outside input. The bag is outfitted with battery shortage protection unit, short circuit protection unit and over heat protection unit. A temperature controller controls heating or refrigerating to the preset temperature. When short of battery or the temperature reaches the preset one, the bag sounds correspondingly. A metal (or plastic / nylon) unloadable rack to the outside of the bag and designed according to human body back is capable of heat dissipation in hot weather.

The invention relates to a process and a device for purifying flue gas containing lead and cadmium by adopting a sintered plate circulation adsorption method, belonging to the technical field of environmental protection of the non-ferrous metal metallurgy industry. The process for purifying the flue gas containing lead and cadmium by adopting the sintered plate circulation adsorption method comprises the following steps of carrying out circulation fluidized adsorption by adopting powder, carrying out dust removal by filtration by virtue of a sintered plate, and combining with measures of mixing wind, dividing walls, humidifying and cooling, thus effectively removing and recycling harmful substances of lead, cadmium and the like in the smoke. By adopting the process for purifying the flue gas containing lead and cadmium by adopting the sintered plate circulation adsorption method, the effect that discharge of the harmful substances of lead, cadmium and the like is far below the national standard can be strictly guaranteed; meanwhile, the historic technical problems that a filter material is blocked, the efficiency is low and waste water treatment by a wet process technology is difficult in the traditional filtering type dust removal technology are solved, and no secondary pollution is produced in a treatment process, so that the process is suitable for development trends of environmental protection and circular economy and provides a new way for treating non-ferrous metal lead and cadmium smoke.

The invention discloses a battery pack and a vehicle. The battery pack comprises a battery module and a cooling device, each battery direct-connection group layer in the battery module at least comprises two battery direct-connection groups which are arranged side by side at intervals; the battery direct connection group comprises a battery cell stacking body, wherein the battery cell stack body comprises a plurality of soft package battery cells formed by series pole core groups, first pole lug brackets are arranged at two ends of each battery direct connection group, two adjacent battery direct connection groups which are arranged side by side are connected with the first pole lug brackets at the same end, and an accommodating space is defined between the two battery direct connection groups and the first pole lug brackets at the two ends; wherein the liquid cooling plate is attached to the battery direct connection group layer, the liquid cooling plate is arranged on the upper surface and / or the lower surface of the battery module, the liquid cooling plate and the accommodating space define an accommodating groove, the heat conduction plate is connected with the liquid cooling plate and inserted into the accommodating groove, the accommodating groove is sealed by another liquid cooling plate or protection plate, and heat conduction glue is arranged between the battery directconnection group and the heat conduction plate. The battery pack is simple in internal structure, high in unit volume capacity density, high in heat conduction efficiency and easy to adjust in height.

The invention discloses a processing technology of walnut dried tofu. The processing technology comprises blank making, refrigeration, blank cutting, marinating, baking and mixing. The processing technology disclosed by the invention solves the problems of bad mouthfeel and single taste of existing dried tofu.

Provided is a stamping type granulator. Two ends outside a spindle (5) are sleeved by bearing seats (6), an eccentric wheel (7) is installed in the middle of the spindle (5), a connection rod shaft (8) is connected with a connection rod seat (9) and the eccentric wheel (7), one end of a stamping rod (10) is connected with the connection rod seat (9), the other end of the stamping rod (10) is located on one side in a stamping chamber (23), and the other side in the stamping chamber (23) is provided with a stamping die (21). The stamping die (21) is installed on a stamping seat (20). One end of an auger shaft (18) is fixed on an auger seat (17), the other end of the auger shaft (18) passes through a feeding hopper (19) to enter the stamping chamber (23), and a small belt pulley (16) is installed on the auger shaft (18). Two pulley groups are welded on two ends of a square frame (11), a middle section of the stamping rod (10) is a cuboid. Pulleys (13) at two ends of the square frame (11) clamp the stamping rod (10). The stamping type granulator greatly prolongs the service life of accessories and improves the efficiency.

The invention discloses an air compression type cooling and dehumidifying air-conditioning system which is composed of an air inlet space, a gas compressor, a humidity conditioning heat exchanger, a heat regenerator, dropping equipment, a moisture separator, an air-supplying space, cold and heat regulation auxiliary equipment, a pipeline and a valve. The system directly takes air as the working medium and can cool and dehumidify air in summer and heat and humidify the air in winter by switching the valve. The system adopts an open system to avoid indirect heat exchange loss of a closed cycle system and adopts the mode of multi-stage cooling and backheating to cause the system to have strong dehumidifying capacity and higher energy efficiency ratio. The system breaks through the limitation that the common refrigeration type dehumidifier only has the refrigeration function for air recycling dehumidification, and the system has the functions of cooling and dehumidifying in summer and heating and humidifying in winter. The system is applied to the dehumidification and ventilation in various places with air conditioning system and especially in underground buildings, such as underground department stores, civil defence projects and the like.

The invention provides a car air conditioning system. The car air conditioning system is characterized by comprising a power supply, a semiconductor hot and cold exchanger, an air blower, a first copper pipe, a second copper pipe, a third copper pipe, a first check valve, a second check valve, a third check valve and a control part, wherein the power supply is used for supplying powder for the car air conditioning system; the semiconductor hot and cold exchanger is provided with a first fin and a second fin which are oppositely arranged; the air blower is arranged in a ventilating pipeline; the first copper pipe is wound on the first fin; the second copper pipe is wound on the second fin; the third copper pipe is connected with the inlet ends of the first copper pipe and the second copper pipe; the first check valve is arranged at the inlet end of the first copper pipe; the second check valve is arranged at the inlet end of the second copper pipe; the third check valve is arranged at the inlet end of the third copper pipe; and the control part is used for controlling the transformation of refrigeration and heating of the first fin, controlling starting or closing of the semiconductor hot and cold exchanger and the air blower, and controlling respective opening or closing of the first check valve, the second check valve and the third check valve. According to the car air conditioning system, an air conditioning system of integrating the refrigeration and heating and defrosting is realized, and a car indoor heat island phenomenon in summer is solved.

The invention relates to a transparent spraying type ultraviolet blocking composition containing an organic ultraviolet blocker, ethanol, oil and purified water. The ultraviolet B blocking coefficient of the transparent spraying type ultraviolet blocking composition containing the organic ultraviolet blocker, ethanol, oil and purified water is SPF50 or above, the ultraviolet A blocking grade keeps PA+++, and the composition has cooling and makeup finishing functions, has no white turbidity phenomenon, and can be used for dry skins and wet skins.

The invention discloses a cutting fluid spraying device for an OCV valve. The cutting fluid spraying device includes a three-jaw chuck for clamping a workpiece, wherein a fluid inlet pipe is connected with the rear end of the three-jaw chuck, a fluid outlet joint is arranged in the inner cavity of the three-jaw chuck and positioned at a position close to the movable jaws, the fluid outlet joint is arranged in the hollow inner cavity matched with the valve element in a sliding manner, the valve element is composed of a flat part and a protruded part arranged sequentially, a conical surface for being matched with the inclined surface of the protruded part of the valve element is arranged on the wall body of the hollow inner cavity of the fluid outlet joint, and a plurality of slant fluid outlet nozzles are arranged on the outer circumferential wall of the front part of the fluid inlet pipe along the circumferential direction; a spring is arranged in a through hole of the valve element, and one end of the spring abuts against the wall body of the hollow inner cavity of the fluid inlet pipe while the other end of the spring abuts against the inner wall of the through hole of the valve element. The cutting fluid spraying device for the OCV valve is convenient to operate and high in machining precision.

Provided is a hot-rolling lubricating agent of magnesium and magnesium alloy plates and strips. Industrial white oil No.5 used as base oil is adopted for being matched with various composite additives, wherein the composite additives comprise an anti-abrasion agent, an oiliness agent, an oxidation-corrosion inhibitor, a sterilizing agent, an anti-foaming agent, a chelating agent, an emulsifying agent, a coupling agent and an auxiliary agent. The hot-rolling lubricating agent has the cooling, lubricating, cleaning and diffusion functions, reduces the magnesium-adhering degree of a roller, decreases the temperature of the roller, and reduces damage caused by adhesion of the surfaces of the plates and the strips.

The invention provides automobile torsion rod spring rolling straightening quenching equipment which comprises a transmission device, a straightening device and a quenching device, wherein the straightening device is transmitted through the transmission device; a torsion rod spring is arranged inside the straightening device; and the quenching device is used for quenching the torsion rod spring. The automobile torsion rod spring rolling straightening quenching equipment is simple to operate; by utilizing the rolling function of a driving wheel and a driven wheel, not only the torsion rod spring is straightened at the red hot state in a pre-rolling mode, but also functions of pre-cooling and temperature equalizing to the torsion rod spring are achieved; three water spraying pipes which are uniformly distributed on a column which takes the axis of the torsion rod spring as the center are used for spraying water and quenching liquid to the torsion rod spring, with uniform quenching and small thermal stress. The automobile torsion rod spring rolling straightening quenching equipment has the advantages that the torsion rod spring is less bent, small in deformation and uniform in hardness; the overall straight linearity is less than 0.5mm; and meanwhile the fatigue resistance of the automobile torsion rod spring is improved, and the looseness deformation is reduced.

The invention discloses hard beancurd with the taste of pickled pepper and a preparation method thereof. The hard beancurd is prepared from the following raw materials in parts by weight: 130 to 230 parts of soybean, 13 to 23 parts of the pickled pepper, 830 to 930 parts of brine, 7 to 15 parts of coagulator, 5 to 13 parts of protective agent and 18 to 28 parts of seasoner. The preparation method comprises the steps of pretreating the soybean, pulping, solidifying, slicing, baking, marinating, and seasoning a finished product. The preparation method has the advantages of simplicity, easiness in operation and low cost, the prepared hard beancurd with the taste of the pickled peppes has unique flavor, and the problems of single taste, poor elasticity and poor taste of existing hard beancurd are solved.

The invention discloses a refrigerating and heating carpet, which is applied to household rooms and various halls. The refrigerating and heating carpet consists of fuzzy fiber, a copper pipe, an expansion valve, a compressor and an external unit, wherein the entire carpet is braided to a required size by using organic fuzzy fibers; a layer of copper pipe loop is inserted into the middle of the carpet, and is distributed by folding in a reciprocating way in the carpet plane as shown in the attached drawing of the specifications; the two ports of the copper pipe are connected with the expansion valve and the compressor outside the carpet; the expansion valve and the compressor are connected with the external unit; the external unit is arranged outside a room, and is a heat exchanger with a fan; during working, the power supply of the carpet is switched on, so that the copper pipe, the expansion valve, the compressor and the external unit constitute a heat pump working unit; during heating, the compressor is used for driving working mediums (R134a and the like) to circulate physically in a system, be evaporated for absorbing heat in the external unit and be liquefied for releasing heat in the copper pipe of the carpet; the refrigerating process is reverse to the heating process; and the carpet distribution area is relatively wide and is equivalent to the floor area of the room, so that the room temperature convection effect is not remarkable, and the refrigerating or heating effect is extremely mild. Compared with an ordinary carpet, the refrigerating and heating carpet has the advantages of comfortable and attractive effects, refrigerating or heating function, mild acting effect and high comfort.

The invention provides a preparation method of a heteromorphic microporous ceramic capillary. The preparation method comprises the steps of designing a special heteromorphic microporous ceramic capillary forming die, preparing special zirconia ceramic particles, matching a unique sintering forming technology to achieve primary sintering forming of a heteromorphic inner hole of the ceramic capillary without secondary processing, and designing a thimble positioning hole during forming green body preparation according to a product property of the heteromorphic microporous ceramic capillary to allow that an outside diameter grinding technology of the ceramic capillary is greatly simplified. For the ceramic capillary prepared by the method, the density reaches 6.0-6.10g / cm<3>; the hardness is greater than 1200HV; the bending strength is greater than 1200MPa; the dimensional tolerance of the inner hole is within 3 micrometers; the outside diameter grinding precision can reach 1-micrometer position precision; a glass capillary in a multi-core optical fiber collimator can be completely replaced; the matching precision with an optical fiber is high; the reliability meets a requirement of an optical passive device standard GR1209 / 1221.

The invention belongs to the technical field of air conditioners, and particularly relates to a direct expansion heat recovery energy saving method and device. The method mainly includes the complete freezing circulation of a compressor (COM) compression process, a condenser (CON) condensing process, an expansion valve (EXP) throttling process and an evaporator (EVP) evaporation process. The radiating process of the condenser (CON) condensing process is characterized in that at least 2 condensers are connected in series, radiating amount required by a second condenser (CON2) is the radiating amount of a first condenser (CON1) controlled proportionally to accurately control the radiating amount required by the second condenser (CON2). The heat absorption process of the evaporator (EVP) evaporation process is characterized in that at least 2 evaporators are connected, the heat absorbing amount required by the second evaporator (EVP2) is heat absorbing amount of a first evaporator (EVP1) controlled proportionally to accurately control the heat absorbing amount required by a second evaporator (EVP2). Only the compressor (COM) is required to be started, and the method and the discharging device have functions of cooling, dehumidifying and reheating by means of heat recovery.