CN102764569A - Energy storage type refrigeration type dryer - Google Patents
Energy storage type refrigeration type dryer Download PDFInfo
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- CN102764569A CN102764569A CN2012102307528A CN201210230752A CN102764569A CN 102764569 A CN102764569 A CN 102764569A CN 2012102307528 A CN2012102307528 A CN 2012102307528A CN 201210230752 A CN201210230752 A CN 201210230752A CN 102764569 A CN102764569 A CN 102764569A
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Abstract
The invention relates to an energy storage type refrigeration type dryer which comprises a box body (H), wherein the box body is provided with a compressed air inlet (I), a compressed air outlet (J) and a water draining hole. The energy storage type refrigeration type dryer is characterized in that a precooler (A), an aluminum sheet fin type precooling heat regenerator (B), an aluminum sheet fin type evaporator (C) and a steam-water separator (E) are arranged in the box body, and are externally connected with an electronic water drainer (F), and the electronic water drainer (F) is connected with the water draining hole; a temperature sensor (b) arranged on an energy storage pond (D) is connected with a controller (a), a glycol energy storage solution with the concentration of 20 percent is filled in the energy storage pond (D), and the aluminum sheet fin type evaporator (C) is immersed in the energy storage solution which circulates through a circulating pump (G); and a refrigeration compressor (1), a condenser (2), a drying filter (3), an automatic expansion valve (4) and the aluminum sheet fin type evaporator (C) are sequentially communicated. The energy storage type refrigeration type dryer has the advantages of high heat transfer efficiency, compact structure, energy consumption saving and stable dew point.
Description
Technical field
The present invention relates to a kind of freeze drying plant, especially a kind of accumulating type freezing type drier.
Background technology
The compressed air that comes out from air compressor machine is a kind of sordid gas; Wherein be mixed with plurality of impurities (comprising solia particle, water, wet goods) and can bring harm production process and product quality; So to compressed air purify with dried be necessary aspect the industry, thereby cooling driers arises at the historic moment.In the use field of cooling driers, have no an employed cooling driers of user to be in the state of operating at full capacity all the time basically, refrigeration work consumption then matches in advance by norm, so always produce superfluous energy.Guarantee that the pressure leak source fluctuation range is unlikely to too big, use superfluous energy again, adopt the energy-storage type cooling driers of energy-storage system to can be good at reaching this purpose.
Summary of the invention
The present invention will solve the shortcoming of above-mentioned prior art, and a kind of accumulating type freezing type drier is provided.
The present invention solves the technical scheme that its technical problem adopts:
A kind of accumulating type freezing type drier; It comprises casing; This casing is provided with compressed air inlet, compressed air outlet, discharge outlet, and wherein, casing is built-in with forecooler, aluminium plate-fin precooling regenerator, aluminium plate-fin evaporator, reaches steam-water separator; Forecooler, aluminium plate-fin precooling regenerator, aluminium plate-fin evaporator, and the equal external connected electronic water trap of steam-water separator, the electronics water trap mouth of a river of running in; Establish temperature sensor on the energy storage pool and be connected with controller, 20% ethylene glycol accumulation of energy liquid is housed in the energy storage pool, the aluminium plate-fin evaporator is immersed in the middle of the accumulation of energy liquid, and ethylene glycol accumulation of energy liquid circulates through circulating pump; Refrigeration compressor is connected with condenser, device for drying and filtering, automatic expansion valve, aluminium plate-fin evaporator successively.
The accumulating type freezing type drier is through the built-in energy storage pool that 20% ethylene glycol accumulation of energy liquid is housed of casing, and the aluminium plate-fin evaporator is immersed in the middle of the accumulation of energy liquid, and accumulation of energy liquid circulates to keep the temperature balance through circulating pump.Equipment is in service, and when operating load was on the low side, unnecessary cold carried out heat exchange through the accumulation of energy liquid in aluminium plate-fin evaporator and the energy storage pool, unnecessary cold is stored in the accumulation of energy liquid, thereby does not cause energy dissipation.When the cold of accumulation of energy liquid storage arrives to a certain degree, refrigeration compressor will be shut down, and institute's chilling requirement is provided by accumulation of energy liquid in the evaporimeter at this moment.In this way, the accumulating type freezing type drier uses the cold that common cooling driers is fallen by the by-passing valve bypass again, reaches the purpose of energy efficient.
Description of drawings
Fig. 1 is a system process sketch map of the present invention.
Description of reference numerals: forecooler (A), plate-fin precooling regenerator (B), plate-fin evaporator (C), energy storage pool (D), steam-water separator (E); Electronics water trap (F), accumulation of energy liquid circulating pump (G), casing (H), compressed air inlet (I), compressed air outlet (J); Refrigeration compressor (1), condenser (2), device for drying and filtering (3), heating power expansion valve (4); Dual pressure controller (5), dual-pressure controller (6), controller (a), temperature sensor (b).
The specific embodiment
Below in conjunction with accompanying drawing 1 and embodiment the present invention is described further:
The accumulating type freezing type drier, it comprises casing (H), this casing is provided with compressed air inlet (I), compressed air outlet (J), discharge outlet.Casing is built-in with forecooler (A), aluminium plate-fin precooling regenerator (B), aluminium plate-fin evaporator (C), and steam-water separator (E), equal external connected electronic water traps (F), the electronics water trap mouth of a river of running in.20% ethylene glycol accumulation of energy liquid is housed in the energy storage pool (D), and aluminium plate-fin evaporator (C) is immersed in the middle of the accumulation of energy liquid, and accumulation of energy liquid circulates through circulating pump (G).Compressed air inlet (I) is communicated with forecooler (A), aluminium plate-fin precooling regenerator (B), aluminium plate-fin evaporator (C), steam-water separator (D), aluminium plate-fin precooling regenerator (B), compressed air outlet (J) successively successively.Refrigeration compressor (1) exhaust outlet is connected with condenser (2), device for drying and filtering (3), automatic expansion valve (4), aluminium plate-fin evaporator (C), refrigeration compressor (1) air entry successively successively.The refrigerant high pressure partly is provided with dual pressure controller (5), and refrigerant high pressure, low pressure partly are provided with dual-pressure controller (6).
Do not establish by-passing valve in the refrigeration system; During the equipment operation; When operating load is lower than the refrigerating capacity that refrigeration compressor (1) is produced; Unnecessary cold carries out heat exchange through the accumulation of energy liquid in aluminium plate-fin evaporator (C) and the energy storage pool (D), through the temperature that reduces accumulation of energy liquid unnecessary cold is stored in the accumulation of energy liquid.
When the cold of the accumulation of energy liquid in the energy storage pool (D) is stored into to a certain degree; Controller (a) control refrigeration compressor (1) is shut down; Carry out heat exchange in aluminium plate-fin evaporator (C) lining with the compressed air that gets into evaporimeter through the lower accumulation of energy liquid of temperature then; Compressed-air actuated temperature is reduced to below the dew-point temperature of requirement, separate out and remove the water in the compressed air; During this period, refrigeration compressor (1) consumed power not; When the cold of the accumulation of energy liquid in the energy storage pool (D) was depleted to a certain degree, refrigeration compressor (1) was opened again.
Be provided with temperature sensor in the energy storage pool (D), when the accumulation of energy liquid temp in the energy storage pool (D) was lower than 2 ℃, controller (a) control refrigeration compressor (1) was shut down, and the compressed air that guarantees to get into evaporimeter is more than 0 ℃, to prevent the gambling of evaporimeter ice; When the accumulation of energy liquid temp was higher than 6 ℃, controller (a) control refrigeration compressor (1) restarted, and guarantees that compressed-air actuated pressure leak source temperature is not higher than 8 ℃; Thereby guarantee that compressed-air actuated dew point is between 0-8 degree.
Aluminium plate-fin precooling regenerator (B) is provided with multichannel, and this aluminium plate-fin precooling regenerator (B) is provided with electronics water trap (F) mouth of a river of running in.
Aluminium plate-fin evaporator (C) is provided with multichannel, and this aluminium plate-fin evaporator (C) is provided with electronics water trap (F) mouth of a river of running in.
Heating power expansion valve (4) is set before evaporator refrigerant inlet, can regulates the refrigerant flow of inflow evaporator automatically according to the variation of load.
Partly be provided with dual pressure controller (5) at the refrigerant high pressure.
Partly be provided with low pressure controller (6) in refrigerant high pressure, low pressure.
Its operation principle
The present invention is according to the corresponding relation between water saturation steam pressure and the temperature; Utilize refrigerating plant to make compressed air be cooled to certain dew-point temperature; Separate out contained moisture content, through steam-water separator and electronics water trap water is discharged, thereby make compressed air obtain drying.
The amount of steam is determined by compressed-air actuated temperature in the compressed air: reduce compressed-air actuated temperature and can reduce the water vapour content in the compressed air, and unnecessary steam can condense into liquid under the constant basically situation of compressed air pressure keeping.Freezing type drier utilizes this principle to adopt the Refrigeration Technique dried compressed air, so freezing type drier has refrigeration system.
The refrigeration system of freezing type drier belongs to compression-type refrigeration, is made up of four basic elements of character such as refrigeration compressor, condenser, evaporimeter, expansion valves.Connect successively with pipeline between them, form an airtight system, cold-producing medium constantly circulates in system, and generating change of state is also carried out exchange heat with compressed air and cooling medium.Refrigeration compressor sucks the low-pressure low-temperature cold-producing medium in the evaporimeter in the compressor cylinder, and refrigerant vapour is through overcompression, and pressure, temperature raise simultaneously; The refrigerant vapour of high pressure-temperature is depressed into condenser, and in condenser, the air that refrigerant vapour that temperature is higher and temperature are lower carries out heat exchange, and the heat of cold-producing medium is taken away by air and condensation is got off, and refrigerant vapour has become liquid.This part liquid is transported to expansion valve again, and throttling has become the liquid of low-temp low-pressure and got into evaporimeter through expansion valve; The refrigerant liquid of low temperature, low pressure absorbs compressed-air actuated heat and vaporizes in evaporimeter, a large amount of liquid water and compressed air freeze-outs after obtaining cooling off; Refrigerant vapour in the evaporimeter machine of being compressed again siphons away, like this cold-producing medium just in system through overcompression, condensation, throttling, such four processes of evaporation, thereby accomplished a circulation.
In the refrigeration system of freezing type drier, evaporimeter is an equipment of carrying cold, and cold-producing medium absorbs compressed-air actuated heat therein, realizes the purpose that dehydrates.Compressor is a heart, plays a part suction, compression, refrigerant conveying steam.Condenser is exothermic equipment, and the heat that the heat that absorbs in the evaporimeter is transformed together with compressor power input passes to the cooling medium air and takes away.Expansion valve plays the throttling hypotensive effect, controls and regulate the quantity of refrigerant liquid in the inflow evaporator simultaneously cold-producing medium, and system is divided into high-pressure side and low-pressure side two large divisions.
Freeze-drying generally can drop to the pressure leak source of air 2 ℃～10 ℃.When pressure leak source drops to below 0 ℃, because the moisture content of separating out in the air can freeze in cooling device, draining not only is obstructed, but also can freezing refrigerating plant, so generally do not adopt.
The technological process explanation
Drying technology process:80 ℃ of heat and moist compressed air gets into forecooler by the compressed air inlet; Under forced ventilation, carry out heat exchange (environment temperature generally is no more than 38 ℃) with surrounding air; Cooling back compressed air tentatively is cooled to 45 ℃, and have a fraction of condensed water to be discharged by the electronics discharge outlet this moment.
45 ℃ compressed air gets into plate-fin precooling regenerator again, and in evaporimeter, is carried out heat exchange by the compressed air after the refrigerant cools.Wherein make 45 ℃ of compressed air temperature that get into forecooler reduce to 25 ℃, tentatively reduce damp and hot saturated compressed-air actuated temperature and water content, alleviate the thermic load of evaporimeter to a certain extent, and then reduce the energy consumption of complete machine; Dewater 2 ℃ the compressed air of in evaporimeter, being cooled in addition separates condensate through steam-water separator and becomes dry compressed air and get back to plate-fin precooling regenerator; Carry out heat exchange with 45 ℃ compressed air; Temperature increase to 35 ℃ is gone out by compressed air outlet; Thereby reduce the relative humidity of compressed air in the exit; Make gas pipeline can inwall not occur and get rusty, also avoided simultaneously crossing the low pipe that occurs outer " hang and reveal " phenomenon, improve the shopwork environment because of outside wall temperature because of relative humidity is too high.
The compressed air that in plate-fin precooling regenerator, is pre-chilled to 25 ℃ earlier enters into the aluminium plate-fin evaporator again; Carry out heat exchange with the refrigerant liquid of low-temp low-pressure in evaporation channel; Be cooled to 2 ℃; Have a large amount of condensate to freeze-out this moment, and the discharge outlet through base of evaporator connects the electronics water trap and discharges.Simultaneously, compressed air carries out heat exchange with accumulation of energy liquid in evaporimeter.When the cold-producing medium cold was excessive, compressed air temperature was low excessively, carried out heat exchange with accumulation of energy liquid, and cold is stored in the accumulation of energy liquid, guaranteed that compressed air is more than 0 ℃; When cold-producing medium cold deficiency or refrigeration compressor were shut down, compressed air temperature raise, and carries out heat exchange with accumulation of energy liquid, and the cold in the accumulation of energy liquid is released out cooled compressed air, guaranteed dew point.
Compressed air is reduced to 2 ℃ in evaporimeter, and a large amount of condensate is outside discharge outlet meets electronics water trap discharge system, and more tiny water droplet water smokes are suspended in the compressed air but still have in a large number; If directly get into the precooling regenerator; These water droplet water smokes make the airborne water content increase of finished product cause dew-point temperature to rise along with the carrying out of the heat exchange part in them is returned gas phase with " double evaporation-cooling ", and the aqueous water that another part has little time to evaporate then gets into user pipe with air-flow; Make in the gas equipment of downstream and aqueous water occurs; Certainly will influence product quality like this, so need establish steam-water separator here, 2 ℃ of compressed air that come out by evaporimeter at first get into steam-water separator; Stainless steel cloth is equipped with in this separator inside; Flow through when the steam-water separator of stainless steel cloth is housed when the compressed air of carrying tiny water droplet and water smoke secretly,, can effectively remove little vaporific particulate to 5 μ m because the surface gap of stainless steel cloth is less; A large amount of so tiny water droplets and water smoke are condensed upon the steam-water separator bottom, connect outside the electronics water trap discharge system through discharge outlet.Discharged by compressed air outlet after the compressed air that 2 ℃ the compressed air that is removed moisture content gets into precooling regenerator and 45 ℃ again carries out heat exchange and is warming up to 35 ℃, the compressed air pressure dew point of discharge is lower than 3 ℃.
The refrigeration process flow process:The liquid refrigerant of low-temp low-pressure gets into the aluminium plate-fin evaporator by refrigerant inlet; Absorb a large amount of heats that compressed air emits and flash to the gaseous refrigerant of low-temp low-pressure; The cold-producing medium of the low-temp low-pressure of gaseous state is compressed the suction of machine suction inlet from the outlet of evaporimeter; Compressor is compressed into the gaseous refrigerant of low-temp low-pressure the refrigerant gas of HTHP; Exhaust outlet by compressor drains into the condenser air inlet, and the refrigerant vapour of HTHP becomes HTHP under forced ventilation cooling refrigerant liquid drains into device for drying and filtering by liquid outlet, filter out the dirt and moisture in the system after; Become the refrigerant liquid of low-temp low-pressure after the entering automatic expansion valve throttling decrease temperature and pressure, get into the aluminium plate-fin evaporator again.So, the circulation that goes round and begins again.
Do not establish hot gas bypass valve in the system, if the equipment operating load is lower than compressor refrigerating capacity, unnecessary refrigerating capacity is stored in the accumulation of energy liquid in the energy storage pool as previously mentioned.When the accumulation of energy liquid temp was lower than 2 ℃, refrigeration compressor was shut down, and the compressed air that guarantees to get into evaporimeter is more than 0 ℃, to prevent the gambling of evaporimeter ice; When the accumulation of energy liquid temp was higher than 6 ℃, refrigeration compressor restarted, and guaranteed that compressed-air actuated pressure leak source temperature is not higher than 8 ℃.So, the circulation that goes round and begins again.
Claims (9)
1. accumulating type freezing type drier; It comprises casing (H); This casing is provided with compressed air inlet (I), compressed air outlet (J), discharge outlet; It is characterized in that: casing is built-in with forecooler (A), aluminium plate-fin precooling regenerator (B), aluminium plate-fin evaporator (C), reaches steam-water separator (E); Forecooler (A), aluminium plate-fin precooling regenerator (B), aluminium plate-fin evaporator (C), and the equal external connected electronic water trap (F) of steam-water separator (E), electronics water trap (F) mouth of a river of running in; Establish temperature sensor (b) on the energy storage pool (D) and be connected with controller (a), 20% ethylene glycol accumulation of energy liquid is housed in the energy storage pool (D), aluminium plate-fin evaporator (C) is immersed in the middle of the accumulation of energy liquid, and ethylene glycol accumulation of energy liquid circulates through circulating pump (G); Refrigeration compressor (1) is connected with condenser (2), device for drying and filtering (3), automatic expansion valve (4), aluminium plate-fin evaporator (C) successively.
2. by the accumulating type freezing type drier described in the claim 1, it is characterized in that: do not establish by-passing valve in the refrigeration system; During the equipment operation; When operating load is lower than the refrigerating capacity that refrigeration compressor (1) is produced; Unnecessary cold carries out heat exchange through the accumulation of energy liquid in aluminium plate-fin evaporator (C) and the energy storage pool (D), through the temperature that reduces accumulation of energy liquid unnecessary cold is stored in the accumulation of energy liquid.
3. by the accumulating type freezing type drier described in the claim 1; It is characterized in that: when the cold of the accumulation of energy liquid in the energy storage pool (D) is stored into to a certain degree; Controller (a) control refrigeration compressor (1) is shut down; Carry out heat exchange in aluminium plate-fin evaporator (C) lining with the compressed air that gets into evaporimeter through the lower accumulation of energy liquid of temperature then, compressed-air actuated temperature is reduced to below the dew-point temperature of requirement, separate out and remove the water in the compressed air; During this period, refrigeration compressor (1) consumed power not; When the cold of the accumulation of energy liquid in the energy storage pool (D) was depleted to a certain degree, refrigeration compressor (1) was opened again.
4. by the accumulating type freezing type drier described in the claim 1; It is characterized in that: dew point is stable; Be provided with temperature sensor in the energy storage pool (D), when the accumulation of energy liquid temp in the energy storage pool (D) was lower than 2 ℃, controller (a) control refrigeration compressor (1) was shut down; The compressed air that guarantees to get into evaporimeter is more than 0 ℃, to prevent the gambling of evaporimeter ice; When the accumulation of energy liquid temp was higher than 6 ℃, controller (a) control refrigeration compressor (1) restarted, and guarantees that compressed-air actuated pressure leak source temperature is not higher than 8 ℃; Thereby guarantee that compressed-air actuated dew point is between 0-8 degree.
5. by the accumulating type freezing type drier described in the claim 1, it is characterized in that aluminium plate-fin precooling regenerator (B) is provided with multichannel, this aluminium plate-fin precooling regenerator (B) is provided with electronics water trap (F) mouth of a river of running in.
6. by the accumulating type freezing type drier described in the claim 1, it is characterized in that aluminium plate-fin evaporator (C) is provided with multichannel, this aluminium plate-fin evaporator (C) is provided with electronics water trap (F) mouth of a river of running in.
7. by the accumulating type freezing type drier described in the claim 1, it is characterized in that: heating power expansion valve (4) is set before evaporator refrigerant inlet, can regulates the refrigerant flow of inflow evaporator automatically according to the variation of load.
8. by the accumulating type freezing type drier described in the claim 1, it is characterized in that: partly be provided with dual pressure controller (5) at the refrigerant high pressure.
9. by the accumulating type freezing type drier described in the claim 1, it is characterized in that: partly be provided with low pressure controller (6) in refrigerant high pressure, low pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102307528A CN102764569A (en) | 2012-07-05 | 2012-07-05 | Energy storage type refrigeration type dryer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102307528A CN102764569A (en) | 2012-07-05 | 2012-07-05 | Energy storage type refrigeration type dryer |
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| CN102764569A true CN102764569A (en) | 2012-11-07 |
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| CN2012102307528A Pending CN102764569A (en) | 2012-07-05 | 2012-07-05 | Energy storage type refrigeration type dryer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383792A (en) * | 2014-09-22 | 2015-03-04 | 杭州科林爱尔气源设备有限公司 | Three-in-one plate exchange type refrigeration dryer and work method |
| CN105536449A (en) * | 2015-12-15 | 2016-05-04 | 新凤鸣集团湖州中石科技有限公司 | Indirect cooling type compressed air cooling and drying device |
| CN106731537A (en) * | 2016-12-27 | 2017-05-31 | 湖北邦之德牧业科技有限公司 | A kind of freezing type drier |
| CN106953468A (en) * | 2017-04-21 | 2017-07-14 | 扬州大学 | A kind of Electric Machine at Pumping Station air conditioner type cooling system and its application process |
| CN108397978A (en) * | 2018-04-20 | 2018-08-14 | 浙江青风环境股份有限公司 | A kind of freezing type drier |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448460A (en) * | 2003-04-23 | 2003-10-15 | 南京赛格净化设备有限公司 | Energy-accumulating cold drier energy-accumulating liquid |
| CN201776069U (en) * | 2010-08-30 | 2011-03-30 | 杭州山立净化设备有限公司 | Freeze drying device |
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2012
- 2012-07-05 CN CN2012102307528A patent/CN102764569A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1448460A (en) * | 2003-04-23 | 2003-10-15 | 南京赛格净化设备有限公司 | Energy-accumulating cold drier energy-accumulating liquid |
| CN201776069U (en) * | 2010-08-30 | 2011-03-30 | 杭州山立净化设备有限公司 | Freeze drying device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104383792A (en) * | 2014-09-22 | 2015-03-04 | 杭州科林爱尔气源设备有限公司 | Three-in-one plate exchange type refrigeration dryer and work method |
| CN105536449A (en) * | 2015-12-15 | 2016-05-04 | 新凤鸣集团湖州中石科技有限公司 | Indirect cooling type compressed air cooling and drying device |
| CN106731537A (en) * | 2016-12-27 | 2017-05-31 | 湖北邦之德牧业科技有限公司 | A kind of freezing type drier |
| CN106953468A (en) * | 2017-04-21 | 2017-07-14 | 扬州大学 | A kind of Electric Machine at Pumping Station air conditioner type cooling system and its application process |
| CN108397978A (en) * | 2018-04-20 | 2018-08-14 | 浙江青风环境股份有限公司 | A kind of freezing type drier |
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Application publication date: 20121107 |