CN201093816Y - Binary ice preparing apparatus - Google Patents

Binary ice preparing apparatus Download PDF

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Publication number
CN201093816Y
CN201093816Y CNU2007200732471U CN200720073247U CN201093816Y CN 201093816 Y CN201093816 Y CN 201093816Y CN U2007200732471 U CNU2007200732471 U CN U2007200732471U CN 200720073247 U CN200720073247 U CN 200720073247U CN 201093816 Y CN201093816 Y CN 201093816Y
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CN
China
Prior art keywords
ice
vacuum chamber
water
pump
binary
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Expired - Fee Related
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CNU2007200732471U
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Chinese (zh)
Inventor
章学来
叶金
葛轶群
吕磊磊
盛青青
杨培莹
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Shanghai Maritime University
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Shanghai Maritime University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
    • Y02P60/85—Food storage or conservation, e.g. cooling or drying

Abstract

The utility model relates to a binary ice preparation device which is characterized in that the utility model comprises a vaccum chamber, a condensing unit, a vaccum pump which is used for vaccum pumping of the vaccum chamber, an ice slurry pump which icedly pumps the binary ice out of the vaccum chamber and a water pump. The top of the vaccum chamber is provided with a water catching cooling coil, a nozzle and a noncondensable gas discharge outlet. The bottom of the vaccum chamber is provided with a binary ice discharge outlet. The condensing unit is connected with the water catching cooling coil, and an inlet of the vaccum pump is connected with the noncondensable gas discharge outlet of the vaccum chamber by a connecting pipeline. An inlet of the ice slurry pump is connected with a discharge outlet of the vaccum pump, and the water pump is used for transferring the water pump which is used for preparing the binary ice to the nozzle for injection. The binary ice preparation device has the advantages of simple structure, convenient operation, low energy consumption and uneasy ice blockage. With using the binary ice preparation device to prepare the binary ice, the thermal resistance problem of an ice layer of a traditional ice making method is solved.

Description

A kind of preparation facilities of binary ice
Technical field
The utility model relates to a kind of preparation facilities of binary ice.
Background technology
Binary ice is meant the mixture of certain class aqueous solution and ice crystals, is to be slimy suspension, and its flowability is fine, can be carried by pump, is also referred to as " ice slurry " usually.Because binary ice contains crystal ice granule, so will absorb a large amount of heat of fusion (heat of fusion of ice is about 335kJ/kg) when ice crystal melts, has improved the volumetric heat capacity of fluid.Simultaneously, there are some researches show that under certain ice content, binary ice can play the effect of drag reducer to a certain extent, its drag losses in the unit length pipeline is littler than water, thereby reduces the power consumption of water pump.Thereby binary ice is a kind of cooling medium with suitable future.
In the last few years, the making of binary ice (or being called ice slurry, Ice Slurry) was studied and was used the emphasis that more and more causes ice making circle.Since in the binary ice preparation process on the solid heat transfer face no ice sheet produce or ice layer thickness very little, so the ice-making process heat transfer coefficient is big, heat transfer temperature difference is little, the COP raising of system is more obvious.Because the binary ice crystal ice granule is very little, therefore very high ice surface area can be reached,, more economical and effective of ice storage technology can be made undoubtedly if ice cold-storage with binary ice, not only can realize higher ice making thermodynamic efficiency, but also can realize the less ice-melt temperature difference and very high ice-melt speed.Binary ice can also make in many chemical industry or other industry and also can realize icing on a large scale cold-storage a little more than 0 ℃ close with awkward silence at a meeting except that being suitable for ice-storage air-conditioning.
Existing binary ice preparation method mainly contains subcooled water ice making method, direct contact type ice making method, scrape type ice making method, fluid bed ice making method, but all there are many shortcomings in above-mentioned several preparation method, be embodied in aforesaid way because the particularity of its ice-making process needs the special evaporimeter of design.For example, subcooled water ice making method requires very accurate to the control of evaporating temperature, technical difficulty is very high, and the once cooled IPF of process subcooler is 2%, so reach certain IPF, the energy consumption of water pump is higher, and the generation of freezing in the subcooler is too frequent, and necessary ice-melt measure has reduced the reliability and the efficiency of system.Direct contact type ice making method requires the not dissolving mutually of contacted two media, so the range of choice of cold-producing medium is narrower, and has the performance attenuation problem after operation a period of time.Scrape type ice making method must dispose the rotating vane that external motor drives, its structure and manufacturing process complexity, and energy consumption is big, the fault rate height.Must control temperature and the flow velocity of water during the operation of fluid bed ice making genealogy of law system at wall, and the size of ice crystal, it is stifled to need simultaneously to prevent that heat exchanger tube from ice taking place, and reach these control requirements simultaneously, implements comparatively difficulty.
The utility model content
The preparation facilities that is to propose a kind of binary ice of the purpose of this utility model, to solve present preparation facilities complex structure, the stifled problem of ice appears in energy consumption height easily.
The utility model solves the problems of the technologies described above by the following technical solutions:
A kind of preparation facilities of binary ice is characterized in that, comprising:
Vacuum chamber, described vacuum chamber top are provided with catches water-cooled coil pipe, nozzle, on-condensible gas outlet; Described vacuum chamber bottom is provided with the binary ice outlet;
The condensation unit, described condensation unit is connected with the described water-cooled coil pipe of catching;
With the vavuum pump that described vacuum chamber vacuumizes, be connected by connecting pipe between the on-condensible gas outlet of the import of described vavuum pump and described vacuum chamber;
Binary ice is pumped the ice stock pump of vacuum chamber, and the import of described ice stock pump is connected with the outlet of described vavuum pump;
The water pump that will be used to prepare binary ice is delivered to the water pump that described nozzle sprays.
Operation principle of the present utility model is as follows:
1) with the indoor air of vavuum pump extracting vacuum, the pressure in the described vacuum chamber is reduced to predetermined pressure;
2) water that will be used to prepare binary ice sprays in described vacuum chamber, and the fine liquid particles of formation in described vacuum chamber flass takes place; The fraction flash distillation heat absorption of fine liquid particles forms steam, and simultaneously, most of in addition water droplet is frozen into ice, forms the bottom that binary ice accumulates in described vacuum chamber; Capture the steam that flash distillation forms with water capturing installation; Extract a small amount of on-condensible gas that infiltrates in the ice-making process in the vacuum chamber out with described vavuum pump;
3) after a period of time, binary ice is pumped out vacuum chamber by the ice stock pump.
At a large amount of steam that produce in the flash process, if only adopting vavuum pump discharges, then there is the energy consumption problem of higher, the utility model adopts catches the water-cooled coil pipe, steam is caught the formation binary ice, vavuum pump only is used for vacuum chamber is reduced to predetermined pressure and discharged a small amount of on-condensible gas that running may enter vacuum chamber, has so both kept vacuum, has reduced energy consumption again.
Further, also comprise water tank, be connected by connecting pipe between the nozzle at described water tank and described vacuum chamber top; Described water pump is arranged on the described connecting pipe; Be provided with desuperheating coil in the described water tank; Described desuperheating coil is connected with described condensation unit.Like this, can be before step 1) be used to prepare the water of binary ice and the temperature of vacuum chamber itself is reduced to predetermined temperature with described.The water and the vacuum chamber cooling itself that will be used to prepare binary ice (are caught the water-cooled coil pipe and can be used to catch steam, also can be used for before the ice making vacuum chamber being lowered the temperature), initial temperature is lower like this, easier generation binary ice, and the ice content of the binary ice that generates also can increase.
Block nozzle for the impurity that prevents to be used for to prepare the water of binary ice, this device also comprises filter, and described filter is arranged on the connecting pipe between the nozzle of described water pump and described vacuum chamber.
In order to filter the minute quantity ice crystal that enters pipeline, vavuum pump damages on the pipeline to being connected to avoid ice crystal, and this device also comprises filter screen, and described filter screen is arranged on the on-condensible gas outlet and the connecting pipe between the described vavuum pump import of described vacuum chamber.
This device also comprises ice storage unit, and the import of described ice storage unit is connected by pipeline with the outlet of described ice stock pump.
Operation principle of the present utility model is, according to water around environmental pressure be reduced to 610Pa when following, its boiling point is lower than 0 ℃ physical characteristic, water under normal temperature sprays into vacuum chamber (being ice-making compartment) through nozzle and forms vaporific fine liquid particles, so flass takes place the fine liquid particles of these nozzle ejections, thereby produce refrigeration effect in vacuum chamber.Because of the heat of solidification (about 335kJ/kg) of water much smaller than evaporation latent heat (about 2500kJ/kg), so its result is sub-fraction flash distillation heat absorption in the fine liquid particles, and make other major part be frozen into binary ice.The water vapour that vacuum chamber flashes off captures by catching the water-cooled coil pipe, the a small amount of on-condensible gas that infiltrates in the vacuum chamber in the ice-making process is discharged by low power vavuum pump, can make vacuum chamber keep needed low pressure thus, thereby the fine liquid particles of nozzle ejection can constantly be carried out flash distillation, keeps continuous refrigeration effect.The binary ice that the vacuum chamber bottom is gathered is delivered to ice storage unit by the ice stock pump, uses to supply with the user.
The utility model has the advantages that: (1) is simple in structure, and is easy to operate.Whole device moving component is few, operation and easy maintenance.(2) the utility model employing is caught the water-cooled coil pipe and is caught steam, need not to open vavuum pump so always, has reduced energy consumption.
Utilize the utility model to prepare binary ice, have thermal efficiency height, be difficult for taking place the stifled advantage of ice.There is ice sheet thermal resistance problem in tradition ice making mode, and this preparation method is the three phase point principle according to water, carries out when realizing evaporation of water and freezing, and evaporation latent heat and latent heat of solidification directly exchange, thermal efficiency height.Supply water during the utility model work and adopt spray pattern, so heat exchange rapidly and fully, because the flow velocity of nozzle exit water is very high, it is stifled to be difficult for that ice takes place.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a structural representation of catching the water-cooled coil pipe described in the utility model.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.
Referring to Fig. 1.The center of top of vacuum chamber 1 is provided with nozzle 7.Nozzle 7 links to each other by the outlet of connecting pipe with water pump 3, on the connecting pipe between the outlet of water pump 3 and the nozzle 7 filter 12 is housed, and filter is 50 purpose T type filters.Water pump 3 imports are connected by the outlet of connecting pipe with water tank 2.The import of water tank 2 is connected with the water source (not shown) through filling pipe.Be provided with desuperheating coil 6 in the water tank 2.The import of desuperheating coil 6 links to each other with the gas-liquid separator of condensation unit 4 through heating power expansion valve 16, the magnetic valve 11 of connecting pipe, outer balanced type; The outlet of desuperheating coil 6 links to each other with the compressor reducer of condensation unit 4 through connecting pipe racks.
Vacuum chamber 1 bottom has the binary ice outlet, and the binary ice outlet links to each other by the import of connecting pipe with ice stock pump 9.The outlet of ice stock pump 9 is connected by the import of connecting pipe with ice storage unit 15.
Vacuum chamber 1 top has on-condensible gas outlet 14, and on-condensible gas outlet 14 is connected by the import of connecting pipe with vavuum pump 8.Filter screen 13 is installed on the connecting pipe between the import of on-condensible gas outlet 14 and vavuum pump 8.Filter screen 13 can filter the minute quantity ice crystal that enters connecting pipe, and vavuum pump damages on the connecting pipe to being connected to avoid ice crystal.
Vacuum chamber 1 top is provided with catches water-cooled coil pipe 5.Referring to Fig. 2, catch water-cooled coil pipe 5 and encompass plate-like by stainless steel tube or copper pipe, be installed in vacuum chamber 1 center of top, catch the basic covering vacuum of diameter chamber 1 entire top of water-cooled coil pipe 5.Catch water-cooled coil pipe 5 and be placed on the support, two concentric circles are processed in being constructed as follows of support earlier, add spoke-like structure then between two concentric circles, and material is stainless steel.Propping up frame peripheral is welded on vacuum chamber 1 locular wall.Catch water-cooled coil pipe 5 and be welded on the vacuum chamber inwall by shelf and get final product, also can install, as long as can guarantee firmly all can by other modes.Catching the import of water-cooled coil pipe 5 links to each other with the gas-liquid separator of condensation unit 4 through heating power expansion valve 17, the magnetic valve 10 of connecting pipe, outer balanced type; The outlet of catching water-cooled coil pipe 5 links to each other 9 through connecting pipe with the compressor reducer of condensation unit 4.
The utility model when operation, open condensation unit 4 earlier, and opens solenoid valve 10, magnetic valve 11, make the temperature of vacuum chamber 1 itself and temperature that water tank 2 contains the water of additive be reduced to predetermined temperature.To contain water, vacuum chamber 1 cooling of additive, be because initial temperature is lower, easier generation binary ice, and the ice content of the binary ice that generates also can increase.Additive in the water can be ethylene glycol, glycerine or surfactant-based material.Because the existence of additive, binary ice can be recrystallized in preparation, storage and course of conveying, also make attached to catching on the water-cooled coil pipe 5, can not being recrystallized by catching the binary ice that steam that water-cooled coil pipe 5 catches generates, and after gathering a top degree, can drop to vacuum chamber 1 bottom, guarantee to catch water-cooled coil pipe 5 like this and can catch to continuous and effective steam.
Open vavuum pump 8 again, the air in the extracting vacuum chamber 1 makes the pressure in the vacuum chamber 1 reduce to predetermined pressure.Consider that there is certain degree of supercooling in water droplet when freezing, the interior pressure of vacuum chamber is maintained below the 500Pa.
Open water supply pump 3 then, make the water in the water tank 2 be delivered to nozzle 7 through water supply pump 3.So flass takes place in the fine liquid particles of nozzle 7 ejections in vacuum chamber 1.The fraction flash distillation heat absorption of fine liquid particles forms steam, and simultaneously, most of in addition water droplet is frozen into ice, and the binary ice of formation accumulates in the bottom of vacuum chamber 1.The water vapour that vacuum chamber 1 flashes off is caught water-cooled coil pipe 5 and is captured, the a small amount of on-condensible gas that infiltrates in the ice-making process in the vacuum chamber is discharged by vavuum pump 8, thereby keep the low pressure in the vacuum chamber 1, catch the low temperature of water-cooled coil pipe 5 and desuperheating coil 6 and keep by condensation unit 4.After work a period of time, open ice stock pump 9, the binary ice that vacuum chamber 1 bottom is gathered is delivered to ice storage unit 15, uses to supply with the user.
More than show and described basic principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (5)

1. the preparation facilities of a binary ice is characterized in that, comprising:
Vacuum chamber, described vacuum chamber top are provided with catches water-cooled coil pipe, nozzle, on-condensible gas outlet; Described vacuum chamber bottom is provided with the binary ice outlet;
The condensation unit, described condensation unit is connected with the described water-cooled coil pipe of catching;
With the vavuum pump that described vacuum chamber vacuumizes, be connected by connecting pipe between the on-condensible gas outlet of the import of described vavuum pump and described vacuum chamber;
Binary ice is pumped the ice stock pump of vacuum chamber, and the import of described ice stock pump is connected with the outlet of described vavuum pump;
The water pump that will be used to prepare binary ice is delivered to the water pump that described nozzle sprays.
2. the preparation facilities of binary ice according to claim 1 is characterized in that: also comprise water tank, be connected by connecting pipe between the nozzle at described water tank and described vacuum chamber top; Described water pump is arranged on the described connecting pipe; Be provided with desuperheating coil in the described water tank; Described desuperheating coil is connected with described condensation unit.
3. the preparation facilities of binary ice according to claim 1 is characterized in that: also comprise filter, described filter is arranged on the connecting pipe between the nozzle of described water pump and described vacuum chamber.
4. the preparation facilities of binary ice according to claim 1, it is characterized in that: also comprise filter screen, described filter screen is arranged on the on-condensible gas outlet and the connecting pipe between the described vavuum pump import of described vacuum chamber.
5. the preparation facilities of binary ice according to claim 1, it is characterized in that: also comprise ice storage unit, the import of described ice storage unit is connected by pipeline with the outlet of described ice stock pump.
CNU2007200732471U 2007-08-02 2007-08-02 Binary ice preparing apparatus Expired - Fee Related CN201093816Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101344353B (en) * 2007-08-02 2011-05-18 上海海事大学 Binary ice preparation method and device thereof
CN106796072A (en) * 2014-08-28 2017-05-31 Abb瑞士股份有限公司 Method and apparatus for solidifying polar substances
CN109915973A (en) * 2019-03-29 2019-06-21 无锡商业职业技术学院 A kind of air-conditioning refrigeration system of no refrigeration compressor
CN113753992A (en) * 2021-09-07 2021-12-07 武伟 High-efficiency vacuum sublimation evaporation cold and heat energy separation system and separation method and application thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101344353B (en) * 2007-08-02 2011-05-18 上海海事大学 Binary ice preparation method and device thereof
CN106796072A (en) * 2014-08-28 2017-05-31 Abb瑞士股份有限公司 Method and apparatus for solidifying polar substances
CN106796072B (en) * 2014-08-28 2019-12-06 Abb瑞士股份有限公司 Method and apparatus for solidifying polar substances
CN109915973A (en) * 2019-03-29 2019-06-21 无锡商业职业技术学院 A kind of air-conditioning refrigeration system of no refrigeration compressor
CN113753992A (en) * 2021-09-07 2021-12-07 武伟 High-efficiency vacuum sublimation evaporation cold and heat energy separation system and separation method and application thereof

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Granted publication date: 20080730