170results about How to "Reduce cooling loss" patented technology

The invention discloses a high-radiation heat-insulated coating which comprises the following components in parts by weight: 25-37 parts of infrared reflection pigments, 12-20 parts of aluminum-coated hollow microspheres, 15-28 parts of aerogel, 30-55 parts of organic resin, 0.1-0.2 part of a wetter, 0.36-0.47 part of a dispersant, 0.3-0.9 part of a defoamer, 0.02-0.1 part of a preservative, 0.02-0.1 part of a mildew preventive, 0.52-1.12 parts of a thickener, 1.2-2.4 parts of a film-forming aid and 0.03-0.18 part of a pH value regulator. The coating is provided with a plurality of photo-thermal reflection layers and heat-insulated barriers, has a good heat-insulated effect capable of reaching more than 98%, and is excellent in mechanical performance, large in adhesive force, good in weather resistance, water resistance, stain resistance, scrub resistance and the like, safe, environment-friendly and wide in application range.

The invention provides a cooling system for the working face of the mine. The invention consists of a ground refrigerating unit, a cooling water recycling device, a cold wind preparing device and a cold wind conveying pipeline. The refrigerating unit and the cooling water recycling device comprise a compressor 7, a condenser 3, a throttle 8, a heat exchanger 10, a cooling water pond 1, and a fresh water pump 2. The cold wind preparing device is a wind spraying chamber 11, and uses the cold media water prepared by the refrigerating unit to spray the wind current, can comprises a wind-inlet grille 16, a wind outlet 20, a water squirting pipe 17, a nozzle 18, a breakwater 19, a wind chamber water falling pond 21, a general water inlet pipe 22, a general water outlet pipe 23 and the like. A plurality of rows of vertical water squirting pipes are arranged between the wind-inlet grille and the wind inlet, nozzles are arranged on the top of the water squirting pipes, and the general water inlet pipe introduces the cold media water of the refrigerating unit. The invention adopts the cold media water spray to process, and prepare the cold wind with the high wind volume, high temperature difference, high enthalpy difference; can reduce the times of the heat exchanging process, lower the heat transferring temperature difference, improve the whole efficiency, and reduce the cold volume waste of the middle course; thereby is applicable for cooling the high-temperature hot and harmful circumstance.

The invention discloses a wireless sensor network-based central air-conditioning control system and a wireless sensor network-based central air-conditioning control method. The system consists of a chilled-water control subsystem, a cooling-water control subsystem, and a wireless sensor network-based master control system. Due to the inherent hysteresis characteristic of the chilled (cooling) water system, the time synchronization processing is performed on the water outlet / return temperature; the rotating speeds of a water pump and a fan are adjusted by adopting the fuzzy feedback control; and the control quality and comfort of the system are improved. The real-time room temperature of an air-conditioning area is acquired based on a wireless sensor network; and an unoccupied room is detected by combining a Fresnel lens pyroelectric infrared sensor, namely, the feedforward control of the rotating speeds of the chilled (cooling) water pump and the fan is carried out according to a real-time load and a load change value of the air-conditioning, so that the comfort and energy consumption index of the central air-conditioning can be further improved. Based on rated temperature difference parameters of a domestic fan coil, an architecture for serially connecting the fan coil and a new fan unit is provided, and the energy conservation is realized according to the principle of cascade utilization of cold energy.

A cold regulation device in cold supplying system of local centralized type is prepared as connecting server of refrigerating station (SRS) to controller of refrigerating station (CRS) and controller of secondary cold exchanging station (CSCES) through converter, connecting multiple remote monitor computer to CRS and multiple CSCES through converter, connecting each CSCES to local monitor computer and multiple tail end controllers separately through industrial control network, carrying out cold regulation on tail device of central air-conditioning and on secondary cold exchanging station, carrying out water temperature regulation on local centralizing cold supplying network.

The invention provides a low temperature adsorption method for purifying impurity-containing gas, and continuously producing ultra-pure gas. The method uses liquid nitrogen as cold source, uses liquid nitrogen evaporator to cool raw material gas to required temperature, and uses low temperature adsorption tower group to adsorb to prepare ultra-pure gas with purity more than 6N. In addition, the method also includes cold energy recovery process of product gas and low temperature nitrogen. The method can be used for continuously producing ultra-pure hydrogen, deuterium, tritium, helium, neon, argon, nitrogen, oxygen, carbon monoxide and methane. The invention radically solves defects of directly putting an adsorption tower (column) into a liquid nitrogen groove, and realizes large-scale continuous production of ultra-pure gas.

The invention discloses a horizontal air cooling refrigerator with an air curtain function. The horizontal air cooling refrigerator comprises a horizontal cabinet body and a door body; the horizontal cabinet body is provided with an evaporation cavity; a fan and an evaporator are arranged in the evaporation cavity; an end exhaust way and an air return way are arranged at one end part of the horizontal cabinet body up and down; side exhaust ways are respectively arranged on two side walls of the horizontal cabinet body; the end exhaust way and the side exhaust ways respectively communicate with an exhaust port of the evaporation cavity; the air return way communicates with an intake port of the evaporation cavity; separation plates are horizontally arranged in the side exhaust ways for dividing the side exhaust ways into upper air ways and lower air ways; air doors are arranged on intake sides of the upper air ways; the upper air ways are provided with first exhaust ports inclined for upwards exhausting; second exhaust ports are formed in the lower air ways; and the exhausting directions of the second exhaust ports and the exhausting direction of the exhaust port of the end exhaust way are arranged in a staggered manner. The horizontal air cooling refrigerator realizes uniform cold distribution, and improves the refrigeration effect.

The invention discloses a wearable air conditioning suit based on a bionic honeycomb structure. A throttling device of the wearable air conditioning suit is respectively connected with a condenser and an evaporator; a miniature compressor is respectively connected with the condenser and the evaporator; the evaporator is also connected with a miniature water pump and a honeycomb structural pipeline, and the miniature water pump is connected with the honeycomb structural pipeline through a small water storage tank; a lithium ion battery pack is connected with a controller; the throttling device adopts a capillary pipe with the diameter of 0.5-0.8mm; a wearing assembly is divided into a plurality of layers; a comfortable layer, a breathable layer, a heat insulation layer and a surface layer are sequentially arranged from inside to outside; the evaporator adopts a plate heat exchanger; a pipe network of a water cooling system is distributed in a net shape by using a honeycomb structure; the condenser adopts a parallel flow heat exchanger; and a small fan is parallel to the parallel flow heat exchanger. By using the wearable air conditioning suit, the temperature of a microenvironment in the suit is maintained within the range of + / -1.5 DEG C based on the temperature set by a user, and therefore, a comfortable microenvironment inside the suit is provided for a human body.

In the invention, a throttle device in the air conditioner refrigeration circuit is set in the room unit. A section of a high-pressure copper pipe in the front of the throttler is immersed into a condensed water holding tray of the room unit and is cooled to increase the super cooling degree of the condenser, so as to increase the refrigerating output.

The invention discloses an evaporative inter-row air conditioner and precision air conditioner combined cold supply system for a data center. The evaporative inter-row air conditioner and precision air conditioner combined cold supply system comprises a plurality of server cabinet and evaporative inter-row air conditioner combination systems arranged in the data center in parallel. A heat channel is formed between every two adjacent server cabinet and evaporative inter-row air conditioner combination systems. Each server cabinet and evaporative inter-row air conditioner combination system comprises two server cabinet and evaporative inter-row air conditioner combination mechanisms arranged in parallel, wherein a closed cold channel is formed between the two server cabinet and evaporative inter-row air conditioner combination mechanisms. A temperature and humidity sensor is arranged in the data center. Air inlet-return systems are arranged on two opposite side walls of the data center. Air conditioner chambers are arranged on the two opposite side walls. A plurality of precision air conditioners are arranged in each air conditioner chamber, and the multiple precision air conditioners are in signal connection with the temperature and humidity sensor. According to the cold supply system for the data center, the temperature and humidity in the data center can be adjusted, and the cold and heat mixing phenomenon in the data center can be avoided.

The invention relates to an ice machine for making tube ice, which comprises an evaporator, a round heat exchange tube and a full closed heat exchanger. The evaporator is a vertical shell and tube evaporator and is controlled by a control system, a vertical heat exchange tube is arranged in the shell of the evaporator and contains water supplied constantly from outside and flowing from top to bottom, the shell is provided with a low temperature fluid outlet at the upper end and a low temperature fluid inlet at the lower end, and low temperature fluid is transmitted in the shell from outside and flows from bottom to top along the outer wall of the heat exchange tube so as to gradually ice the water flowing in the heat exchange tube into tube ice through heat exchange. The whole ice making and unloading process can be controlled in an automated way and is suitable for automation production in large scale. In addition, the round heat exchange tube has a large heat exchange area and can ice an ice layer from the external circumference to the circle center, thereby achieving even heat exchange; the full closed heat exchanger can realize lowest loss of refrigeration capacity and achieve a most energy-saving and most effective heat exchange effect; and moreover, parts in contact with the water are all made of stainless steel or aluminum alloy, and thereby, produced ice blocks are clean and sanitary and can be eaten directly.

The invention discloses a composite insulation board, comprising an inner wall plate, an outer wall plate and a heat-insulated combination layer, wherein the heat-insulated combination layer is fixedly arranged between the inner wall plate and the outer wall plate and comprises reinforcing ribs, a vacuum heat-insulating board, an inner protection layer and an outer protection layer; the inner protection layer and the outer protection layer are fixed at two sides of the vacuum heat-insulating board; the reinforcing ribs are respectively embedded into the inner protection layer and the outer protection layer; and the inner protection layer and the outer protection layer are respectively connected with the inner wall plate and the outer wall plate. The invention also discloses a refrigerated transport car using the composite insulation board disclosed by the invention and a manufacturing method of the composite insulation board. The vacuum heat-insulating board and a rigid polyurethane board are used together; comprehensive cold broken bridge treatment is carried out on inner and outer parts of the composite insulation board, so that the heat insulation and preservation performances are improved and the weight is light. The strength of the composite insulation board is improved by arrangement of a reinforcing layer, and the inner protection layer and the outer protection layer can effectively prevent the vacuum heat-insulating board from being punctured; therefore, the composite insulation board has a long service life, a broad market application and popularization prospects.

The invention discloses a roadway sidewall intercepting type mine cooling method and a cooling system. Two sides of an intake main roadway of a mine using the method are provided with drill sites in a spaced manner, two sides of a track uphill and downhill and a transport uphill and downhill are provided with drill sites in a spaced manner, and directional boreholes are constructed in two ends of each drill site; the method comprises: first, preparing cooling water with a refrigerating unit and delivering the cooling water into the intake main roadway; second, enabling the cooling water to flow through the directional boreholes between the adjacent drill sites on two sides of the intake main roadway; third, allowing high-temperature water to flow to a return air shaft; fifth, after a surface pump station pumps water to the surface, sending the water to a heat exchanger, re-delivering the water cooled by the heat exchanger into the refrigerating unit, and enable a nonstop cycle from the first step. The invention also discloses the cooling system implementing the above-mentioned method. The method and system of the invention are good in cooling effect, can adjust water flow for each water injection point and can make effective use of terrestrial heat.

The invention belongs to the technical field of purification and edulcoration of nonferrous metals, and particularly relates to a method and a device for purifying molybdenum concentrate. In the proposed method for purifying molybdenum concentrate, micro-wave heating, drying and deoiling, and micro-wave heating impurity denaturation are adopted to purify the molybdenum concentrate under a vacuum condition. The method comprises the steps of 1, heating at 200-400 DEG C by the microwave and carrying out drying and deoiling on the molybdenum concentrate material, feeding the removed oil to a heat exchange system to cool and liquefy, collecting the flowing oil from a liquid oil outlet; and 2, continuing to heat to 535-700 DEG C by the microwave after no oil flows out from the liquid oil outlet, and keeping warm for 1-6 hours, so that iron tramp in the molybdenum concentrate material is degenerated. The proposed molybdenum concentrate purification device comprises a heating furnace body, a loading system, a heat exchange system, a vacuum system and an electric system. The method is advanced in technology flow, and has flexibility; the manufacturing process is simplified; the production efficiency is improved; the device is reasonable in structure, and suitable for operation in large quantities; power consumption is reduced; recycling of flotation oil is achieved; vacuum sealed operation is carried out; and no material loss exists.

The invention provides a multi-split air conditioning system. The multi-split air conditioning system comprises an indoor unit, multiple outdoor units and super-cooling devices, wherein the multiple outdoor units are communicated with the indoor unit through pipelines after being connected in parallel, the super-cooling devices are detachably arranged on the pipelines, and the super-cooling devices are communicated with the indoor unit and the multiple outdoor units which are connected in parallel. The multi-split air conditioning system provided by the invention is provided with the multiple outdoor units which are connected in parallel, the super-cooling devices are detachably arranged on the pipelines, whether the super-cooling devices need to be arranged or not can be selected by a user according to self needs, and the super-cooling devices can be arranged in any positions on the pipelines; compared with a mode of arranging the super-cooling devices in the outdoor units in the prior art, the super-cooling devices are detachably arranged on the pipelines, on one hand, the using amount of the super-cooling devices is effectively reduced, the problem of resource waste is avoided, and thus the production cost of the multi-split air conditioning system is effectively reduced; on the other hand, the size of the outdoor units is effectively reduced, thus the conveying amount of the outdoor units is increased, and the conveying cost is reduced.

The invention relates to the technical field of heat dissipation for equipment, and discloses a heat dissipation cabinet of a data center. The heat dissipation cabinet has the advantages that refrigerating batteries and horizontal partitions, which serve as fins, are arranged in a cabinet of the data center, and servers are placed on the horizontal partitions to achieve contact heat dissipation, so that the cooling capacity and the cold energy utilization rate can be improved, and high-density heat dissipation demands can be satisfied; and moreover, each cooling loop is independently providedwith a valve for flexible refrigerant flow adjustment, so that cooling can be carried out based on heat dissipation demands of each cabinet and even different positions in each cabinet.

The invention discloses an air supply system of a refrigerator and an air-cooled refrigerator, relates to the technical field of refrigerators and aims at solving the problems of relatively high complexity and poor cooling effect of the existing air supply system of the refrigerator. The air supply system of the refrigerator comprises an air duct cover plate; a sealed air cavity is defined by the air duct cover plate and an inner container of the refrigerator; an evaporator of the refrigerator is arranged on the outer surface of the inner container and corresponds to the sealed air cavity in position; the sealed air cavity is internally provided with air guide ribs by which the sealed air cavity is divided into an air suction region, a first air supply region and a second air supply region which sequentially communicate; an air suction hole is formed in the air suction region; the first air supply region is located above the air suction region; an upper air outlet is formed in the air supply region; the second air supply region is located at the lower part of the first air supply region and is spaced from the air suction region by the air guide ribs; a lower air outlet is formed in the second air supply region; and air in a refrigerator chamber is sucked by the air suction hole, one part of air enters the refrigerator chamber from the upper air outlet, and the other part of air enters the refrigerator chamber from the lower air outlet. The air supply system can be used for the air-cooled refrigerator.

The invention discloses a refrigerator, which comprises a refrigerator body, a door body, an outer door seal strip and an inner door seal strip, wherein compartments are defined in the refrigerator; the door body is used for opening or closing the compartments; the outer door seal strip is mounted to the door body and is used for enclosing a clearance between the refrigerator and the door body; and the inner door seal strip is mounted to the door body and is located at the inner side of the outer door seal strip to isolate the compartments from the outer door seal strip. The refrigerator provided by the invention is provided with a double inner and outer door seal strip structure; the inner door seal strip can isolate cold air in the compartments mainly at the inner side of the inner door seal strip, thereby reducing convection between cold air in the compartments and air at the outer door seal strip, and effectively reducing cold loss; the outer door seal strip is arranged to further reduce leakage of cold air in the compartments to the outside, prevent cold air from flowing from the outer door seal strip into the interior of the refrigerator, thereby improving the heat preservation property of the refrigerator, saving electric energy, and reducing energy consumption of the refrigerator; and moreover, such a double-door-seal structure can also reduce the clearance between the refrigerator body and the door body, thus further improving the heat preservation property of the refrigerator.

The invention discloses an intelligent refrigerator based on identity recognition and management. The intelligent refrigerator based on identity recognition and management comprises a refrigerator body and an intelligent management system based on identity recognition and management. The refrigerator body stores food materials through food material boxes provided with identity recognition marks. A plurality of storage layers are formed in the refrigerator body. A plurality of storage cells are arranged in each storage layer. A lifting conveying mechanism which is used for storing and taking the food material boxes in the storage layers and provided with a storage table located below a storing and taking opening is arranged on the same side of the multiple storage layers. A longitudinal conveying mechanism used for storing and taking the food material boxes in the multiple corresponding storage cells is arranged in each storage layer. A transverse conveying mechanism used for storing and taking the corresponding food material boxes is arranged in each storage cell. The intelligent management system is used for distributing and managing the storage positions of the food material boxes, and the lifting conveying mechanism, the longitudinal conveying mechanisms and the transverse conveying mechanisms are controlled to start or stop for storing or taking. The intelligent refrigerator based on identity recognition and management has the beneficial effects that the refrigerator can store and take food or the food materials automatically according to requirements, the cold loss of the refrigerator is low, energy consumption is low, and the storing and taking efficiency is high.

The invention discloses a continuous condensing recovery device for liquid oil of oil field gas. The device comprises a gas inlet pipe, main and auxiliary condensing heat exchangers as well as oil discharge pipes, wherein a gas circuit switching valve is arranged on the gas inlet pipe, the gas inlet pipe is communicated with upper ends of oil field gas pipelines arranged in the main and auxiliary condensing heat exchangers, lower ends of the oil field gas pipelines are communicated with the oil discharge pipes, water discharge pipes and gas discharge pipes respectively, heat-exchange liquid pipelines contacted with the oil field gas pipelines are arranged in the main and auxiliary condensing heat exchangers and provided with inlet / outlet pipes, the inlet / outlet pipes are communicated with refrigerant circulating systems and high-temperature condensing agent circulating systems respectively through switching valves, and gas-liquid separators are arranged on the gas discharge pipes. According to the continuous condensing recovery device for the liquid oil of the oil field gas, one of the main and auxiliary condensing heat exchangers performs condensing recovery, the other one performs defrosting, the main and auxiliary condensing heat exchangers are alternately switched for use, and continuous condensing recovery of the liquid oil is realized.

The invention discloses a refrigeration capacity control method and device. The method comprises the steps of setting the optimal oil return frequency; detecting the actual operation frequency of a unit; and adjusting the opening degree of an oil return electromagnetic valve correspondingly by comparing the actual operation frequency and the optimal oil return frequency so as to control the loss of refrigeration capacity. According to the refrigeration capacity control method and device, the opening degree of the oil return electromagnetic valve can be controlled, and therefore the oil return reliability of the unit can be ensured, meanwhile, the loss of the refrigeration capacity caused by gas mixing of the high-pressure side and the low-pressure side of the unit through an oil return capillary pipe in the high-frequency operation process can be reduced, and the problem of the loss of the refrigeration capacity in the high-frequency operation process of the unit in the prior art can be solved.

This invention discloses one ice fetch door for refrigerator, wherein, the ice fetch door and ice storage case have connection function; when opening ice door, then pulling memory case for use; when closing ice door then pushing the case into original position; if the door is opened widely , the structure will not move.

The invention relates to a phase-change cold-accumulation chilling and freshness keeping system for a supermarket, and belongs to the technical field of supermarket exhibition devices. A refrigerating system and a cold-accumulation material tray are combined on the phase-change cold-accumulation chilling and freshness keeping system; the problem that the ice using amount of chilled and fresh aquatic products in the selling process is large is solved; the ice consumption amount is reduced while the iced storage and freshness keeping advantages are maintained. According to the phase-change cold-accumulation chilling and freshness keeping system, electricity can be used for refrigeration for accumulating cold for cold-accumulation materials in the cold-accumulation material tray at night, and the refrigeration cost is reduced through peak and valley electric charges at night; in the aquatic product selling process in the day, the ice needed for maintaining the lower temperature is replaced by the cold-accumulation material tray, the ice using amount is greatly reduced, and the electricity and water resources which are used for making ice are saved; energy conservation and environment protection in the chilled and fresh aquatic product selling process are achieved.

The invention discloses an air conditioner water cold storage system. The air conditioner water cold storage system comprises an air conditioner fan coil, a water pool, a first ice water storage tank, a second ice water storage tank, a water replenishing tank and a controller. The water inlet end of the air conditioner fan coil is provided with a water inlet pipeline. The water outlet end of the air conditioner fan coil is provided with a water outlet pipeline. The air conditioner fan coil is provided with a circulation pipeline. A first pipeline and a second pipeline are connected between the water inlet pipeline and the water outlet pipeline. The first ice water storage tank is arranged on the first pipeline. The second ice water storage tank is arranged on the second pipeline. A water return tank connected with the water outlet end of the air conditioner fan coil through a pipeline is arranged in the water pool. The water inlet pipeline is provided with a second water pump. The water outlet pipeline is provided with a third water pump and a fourth electromagnetic valve. A temperature sensor is arranged at the water outlet end of the air conditioner fan coil. A temperature probe is arranged in the air conditioner fan coil. The temperature sensor and the temperature probe are both connected with the controller. The water replenishing tank is connected with the first pipeline and the second pipeline through water pipes. The air conditioner energy consumption is lowered, and heat recycling of hot water obtained after heat exchange is achieved.

The invention discloses a vacuum thermal insulation house body used for an ultralow temperature refrigeration house. The house body used for the ultralow temperature refrigeration house is constituted by a vacuum composite structure made of high-strength stainless steel so that the weight of a space enclosing structure can be reduced, the thermal insulation performance and the operation stability of a refrigeration system can be improved, and the operation cost of the refrigeration house can be reduced. The house body is composed of enclosing barriers, a top house plate and a bottom house plate, and the enclosing barriers are composed of a front house enclosing plate, a left house enclosing plate, a right house enclosing plate and a rear house enclosing plate. The front house enclosing plate, the left house enclosing plate, the right house enclosing plate, the rear house enclosing plate and the top house plate are each a composite house plate which is composed of inner layer rigid polyurethane plates, an intermediate stainless steel vacuum layer and outer layer rigid polyurethane plates, vacuuming holes are formed in each intermediate stainless steel vacuum layer, high-strength supporting insulating rods are arranged in each intermediate stainless steel vacuum layer, and the intermediate stainless steel vacuum layer and the inner layer rigid polyurethane plates of the top house plate are provided with air-cooled evaporator mounting holes; the bottom house plate is composed of thin-layer reinforced concrete slabs at the upper layer and rigid polyurethane plates at the lower layer.

The invention discloses an automatic intelligent stereo plasma cold storage. The automatic intelligent stereo plasma cold storage comprises a cold storage body, a refrigeration system, a control system and a mechanical arm device; the cold storage body is provided with an automatic door, a maintenance door and a walking guide rail, wherein the automatic door is used for going-in and going-out of blood-bag packing boxes; a plurality of columns of shelves are arranged on the left side and the right side of the walking guide rail, and a plurality of pairs of supporting strips are arranged on eachlayer of shelves; one blood-bag packing box is placed on one pair of guiding supporting strips; the mechanical arm device comprises a base, a slewing device, a left-right moving device, a lifting device and brackets, wherein the base, the slewing device, the left-right moving device, the lifting device and the brackets are sequentially connected; the base is provided with a rolling wheel which moves along the walking guide rail; one bracket is inserted in the pair of guiding supporting strips for downward placing or upward taking of the blood-bag packing boxes; the refrigeration system comprises a compressor, a condenser and an evaporator which are mutually connected; and the control system outputs signals to control working of the refrigeration system, the mechanical arm device and the automatic door. According to the automatic intelligent stereo plasma cold storage, the mechanical arm device is adopted, loss of the refrigeration capacity is reduced, the labor amount of operators isreduced, and damage to the operators by the low temperature environment is avoided.

The invention relates to a supercooled water type dynamic ice slurry making system. The supercooled water type dynamic ice slurry making system is a technologic system for making a clear water ice slurry by adopting a supercooled water technology. The system is characterized in that one or more separator plates is / are arranged in an ice storage tank, a water level balancing hole is arranged in every separator plate, and the separator plates are equidistantly arranged, and divide the ice storage tank into two or more separate tanks; and an upper water extracting tube and an ice slurry tube are arranged above every separate tank, a lower water extracting tube is arranged below every separate tank, the upper water extracting tubes and the lower water extracting tubes are provided with regulating valves, and every ice slurry tube is provided with a switch valve. In the ice slurry making process, water in one of the separate tank is extracted from the lower portion, high temperature water is extracted from the upper portion of another separate tank, the extracted water and the extracted high temperature water are mixed, the obtained water mixture is sent to a supercooled water heat exchanger through a water pump and forms the ice slurry in a crystallization promoting device, the ice slurry is sent to the upper portion of the one separate tank for making, and above cycle is repeated. The system has the advantages of great reduction of cold heat loss generated by cooling water preheating, great reduction of the preheating loss, and substantial energy saving benefit.

The invention discloses an ice-slurry cooling-based ice-storage air-conditioning unit, relates to an ice-storage air-conditioning unit adopting a new ice-slurry preparation method and directly supplying cold to the tail end (a fan coil or an air-conditioning box) of an air conditioner by using the ice-slurry as a cold containing fluid, and belongs to a cooling air-conditioning system. To solve the problems of low efficiency, large primary investment and the like in the conventional ice-storage air-conditioning unit, the invention provides a novel high-efficient ice-slurry cooling-based ice-storage air-conditioning unit which directly supplies cold to the fan coil or the air-conditioning box by using the ice-slurry as a cold containing fluid. The air-conditioning unit comprises an ice-slurry loop and a cooling loop, wherein the ice-slurry loop comprises an ice machine (1), an ice crushing barrel (2), a No.1 pump (3), an ice storage tank (4), a flow control valve (5), a mixing pool (6), a No.2 pump (7) and related connecting pipelines thereof; and the cooling loop comprises the mixing pool (6), a No.3 pump (8), the tail end of a first air-conditioner (9), the tail end of an n air-conditioner (10) and related connecting pipelines thereof.

A freeze-drying device with a multistage energy recycling function disclosed in the invention, comprises a cooler, a cold air generator, a compressor, an expansion valve, a cold energy recoverer, a fluid heat recoverer, a freeze-drying warehouse equipped with a radiation heating plate, a cold trap warehouse equipped with a cold trap, and pipelines for communication. The cold trap warehouse is communicated with the cooler, the cold energy recoverer and the compressor through the pipelines and a conversion valve arranged on the pipeline; the cold air generator is also communicated with the coldenergy recoverer, the cooler and the compressor through the pipelines and a conversion valve arranged on the pipeline; the freeze-drying warehouse is communicated with a packaged air conditioner, or is connected with a freezing room into an integration, or the freeze-drying warehouse and the freezing room are arranged independently, and the freeze-drying warehouse is arranged in the packaged air conditioner or the freezing room. According to the invention, the investment of the device can be reduced, a freeze-drying process can be automatically complete after one charging, the costs of the freeze-drying device and products are reduced, and the popularization of the freeze-drying technology can be provided a strong product support.

The vacuum cooling case includes case, cooling platform and cantilever; and features the cantilever of low heat conductivity thin wall pipe; position limiting sleeve around the cantilever and micro annular interval between the cantilever and the position limiting sleeve. The present invention solves the technological problems related to lowering the heat conducting cold consumption of the cantilever and raising the resistance to radial vibration and shock of the cantilever.