WO2019070154A1 - Устройство для низкотемпературного охлаждения - Google Patents
Устройство для низкотемпературного охлаждения Download PDFInfo
- Publication number
- WO2019070154A1 WO2019070154A1 PCT/RU2018/000485 RU2018000485W WO2019070154A1 WO 2019070154 A1 WO2019070154 A1 WO 2019070154A1 RU 2018000485 W RU2018000485 W RU 2018000485W WO 2019070154 A1 WO2019070154 A1 WO 2019070154A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heat
- pipe
- cold accumulator
- liquid
- coil
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
Definitions
- the invention relates to refrigeration and can be used in refrigeration systems and machines for low-temperature cooling to -130 ° C.
- the device can be used in medicine, in particular, for supplying cold air to cryochambers, the working temperature of which is no more than -100 ° C.
- the device can also be used in the food industry for deep freezing products.
- a known refrigeration unit with a cold accumulator from heat pipes according to the Russian patent for invention 2190813, F25B7 / 00, 2002.
- the installation contains a compressor, oil separator, condenser, receiver, throttle valve and evaporator in a closed refrigerant circuit.
- the installation also contains a cold accumulator in the form of a tank filled with water and heat pipes. The tops of the pipes are definitely located in the evaporator, and the lower parts are placed in the tank.
- a heat-exchange surface is additionally attached to each of the heat pipes, which is made in the form of vertical hollow sections of the same type connected to collectors. Through the hollow sections, the heat supply of the vapor of the compressed refrigerant to the surface of the heat pipes in the freezing zone occurs.
- the cold accumulator contains an accumulator tank, sealed plastic containers that are housed in an accumulator tank and filled with a phase transition medium.
- Containers are made in the form of linear elastic pipes.
- the tubes are placed in a storage tank parallel to the cross rows.
- the pipes are filled with the medium of phase transition - heat-accumulating material, such as, for example, water, brine.
- the design refers to the type of cold accumulators with encapsulated ice.
- a cooled secondary refrigerant for example, ethylene glycol solution. Washing the spatial structure of the annular space linear plastic containers, the secondary refrigerant removes heat from the heat-accumulating material, freezing it.
- the process continues until the heat-accumulating material in the tubes is completely frozen.
- the heated ethylene glycol enters the storage tank, cools, comes in contact with the pipes through the walls, and releases heat to the phase transition medium of the heat-accumulating material.
- the disadvantage is the low reliability of the device due to the complete freezing of heat-accumulating material in the tubes, which can cause damage to the tubes, as well as the complexity of the design, low efficiency of the device.
- a device was selected for cooling the coolant according to the Russian patent for invention N ° 2105940, F25D 3/00, 1998, which contains a heat-insulated body, in the lower part of which a container for the coolant is installed, in which the evaporator of the refrigerating machine is installed.
- a coil pipe is installed for connection to the heat exchange system, which is coaxially located inside the water distributor.
- the water distributor is equipped with plates located under the tank, between which there are passages for cooling air.
- the body is divided into two sections.
- the ice On the plates of one section the ice is frozen, and in the other section the melting of the previously formed ice occurs and it is dumped into a cooled tank. Cooling of the coolant in the tank occurs by collecting the cooled coolant from one section, melting the discarded ice from the other section and taking heat from the evaporator of the refrigeration machine.
- the disadvantage is the design complexity and low cooling efficiency.
- the technical objective of the claimed invention is to improve the operational properties of the device.
- the technical result is to increase the efficiency of the device while simplifying its design.
- the technical result is achieved due to the fact that in a cooling device containing a coil with connections for refrigerant input and output, a cold accumulator, heat exchange elements, characterized in that the cold accumulator is designed as a pipe contour, the coil is installed inside the pipe contour of a cold accumulator, annular space between them is filled with a liquid consisting of at least two components with different temperatures freezing, heat exchange elements are installed on the external surface of the cold accumulator.
- the coil has a contact area with the pipe contour pipe.
- the device contains a pipe loop filled with aisslarry liquid
- this liquid is also known by such names as liquid ice, fluid ice, binary ice, FLO-ICE, Binary-ICE, Fiuid-ICE, Liquid-ICE, Pumpable-ice.
- This liquid consists of at least two components with different freezing temperatures. In a certain temperature range, one of the liquids passes into the solid phase and is in the form of crystals in the second liquid, which has a lower freezing point. Thanks to the installation of a coil pipe with a refrigerant inside a pipe loop filled with a two-component liquid with different freezing temperatures of the components, the energy potential of the device for low-temperature cooling dramatically increases.
- this liquid allows you to increase the storage capacity of the device due to the phase transition of one of the liquids into ice crystals.
- thermal conductivity and fluidity of a two-component fluid are preserved due to a fluid with a lower freezing point, which remains in a liquid state.
- the output of the device to the operating mode is much faster than in devices with traditional cold accumulators, such as those described in the analogues.
- the temperature taken from the outer surface of the device is much lower than in the nearest analogue and is -130 ° C with a certain selection of liquids.
- the design of the proposed device is much simpler than the design of the nearest equivalent.
- the figure shows the scheme of the cooling device.
- the device for low-temperature cooling contains a coil 1 with an inlet pipe 2 and an outlet pipe 3.
- a coil 1 is installed inside the pipe loop 4.
- the diameter of the coil 1 is less than the diameter of the pipes of the pipe loop 4.
- the coil 1 can be laid in the pipes of the pipe loop 4 with its contact a section with a pipe pipe section 4 for more intensive heat exchange between these pipes.
- heat exchange elements 5 made in the form of plates or ribs.
- refrigerant 6 circulates from the compressor (not shown in the drawing).
- the annular space 7 is filled with a two-component aisslari liquid 8.
- the cooling device operates as follows.
- the refrigerant 6 from the compressor through the inlet pipe 2 enters the coil pipe 1, and passing through it cools the two-component aysslarri fluid 8 located in the pipe circuit 4 of the cold accumulator.
- water and alcohol can be used as a two-component fluid.
- the alcohol freezing temperature is -114 ° C; in this two-component liquid, the alcohol can freeze at a higher temperature from -11 ° C, because the freezing temperature depends on its concentration in the liquid.
- the optimal use of this two-component liquid is in the temperature range from -40 ° to -100 ° C.
- the ratio of alcohol and water can be in wt.% As follows: alcohol from 55% to 95%, water from 5% to 45%.
- aisslarry liquid As aisslarry liquid, other liquids with different freezing temperatures can be used. The selection of liquids, the ratio of their parts, the working temperature range is carried out using special programs and tables.
- the water freezes and crystallizes. Due to the phase transition of water significantly increases the storage capacity of the device. This is due to the use of the heat of the phase transition with the extraction of heat from the heat exchange elements 5 and due to the fact that the amount of water decreases in the formation of ice in a two-component fluid 8 and the concentration of alcohol increases.
- the freezing point of alcohol is much lower than that of water, so the two-component Auxlary liquid 8 continues to cool off from the refrigerant 6 flowing through the coil 1 and accumulates the energy potential for cooling capacity.
- the component with a lower freezing temperature - alcohol remains in a liquid state, does not lose fluidity.
- the Aisslari liquid 8 which is a crystalline ice suspension, behaves like a liquid. Full freezing does not occur, because of which there is no damage to the pipelines and the device as a whole. Increases the reliability of the cooling devices.
- the compressor of the cooling device operates continuously, feeding coolant through the coil 1 continuously, while in the annular space 7 there occurs further crystallization of ice in the liquid 8 and accumulation of the potential of cold.
- the device Due to the high storage capacity of the device using the heat of the phase transition of a liquid in a rather narrow chosen temperature range, the device reaches the operating mode much faster than traditional cold accumulators, which work by heat transfer from a design with a large metal mass or a large volume of liquid.
- the invention improves the efficiency of the device while simplifying its design.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2017135367A RU2661363C1 (ru) | 2017-10-05 | 2017-10-05 | Устройство для низкотемпературного охлаждения |
RU2017135367 | 2017-10-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019070154A1 true WO2019070154A1 (ru) | 2019-04-11 |
Family
ID=62917007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2018/000485 WO2019070154A1 (ru) | 2017-10-05 | 2018-07-23 | Устройство для низкотемпературного охлаждения |
Country Status (2)
Country | Link |
---|---|
RU (1) | RU2661363C1 (ru) |
WO (1) | WO2019070154A1 (ru) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU207609U1 (ru) * | 2021-08-02 | 2021-11-03 | Константин Александрович Подвигин | Устройство для охлаждения воздуха в локальной рабочей зоне подземной выработки |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004055458A1 (en) * | 2002-12-18 | 2004-07-01 | Dieau S.A. | Fluid cooling system, cooled fluid dispenser comprising the later, and methods for sterilization thereof |
RU2392557C1 (ru) * | 2006-05-29 | 2010-06-20 | Вебасто Аг | Аккумулятор холода и/или тепла |
RU131465U1 (ru) * | 2013-04-30 | 2013-08-20 | Общество с ограниченной ответственностью "ТехноИнжПромСтрой" | Аккумулятор холода |
-
2017
- 2017-10-05 RU RU2017135367A patent/RU2661363C1/ru not_active IP Right Cessation
-
2018
- 2018-07-23 WO PCT/RU2018/000485 patent/WO2019070154A1/ru active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004055458A1 (en) * | 2002-12-18 | 2004-07-01 | Dieau S.A. | Fluid cooling system, cooled fluid dispenser comprising the later, and methods for sterilization thereof |
RU2392557C1 (ru) * | 2006-05-29 | 2010-06-20 | Вебасто Аг | Аккумулятор холода и/или тепла |
RU131465U1 (ru) * | 2013-04-30 | 2013-08-20 | Общество с ограниченной ответственностью "ТехноИнжПромСтрой" | Аккумулятор холода |
Also Published As
Publication number | Publication date |
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RU2661363C1 (ru) | 2018-07-16 |
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