CN201100780Y - Compression-absorption mixed refrigerator - Google Patents

Compression-absorption mixed refrigerator Download PDF

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Publication number
CN201100780Y
CN201100780Y CNU2007200440558U CN200720044055U CN201100780Y CN 201100780 Y CN201100780 Y CN 201100780Y CN U2007200440558 U CNU2007200440558 U CN U2007200440558U CN 200720044055 U CN200720044055 U CN 200720044055U CN 201100780 Y CN201100780 Y CN 201100780Y
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China
Prior art keywords
lithium
heat
condenser
type refrigerator
generator
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Expired - Fee Related
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CNU2007200440558U
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Chinese (zh)
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梁任雪
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梁任雪
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Abstract

The utility model discloses a compression-absorption mixed refrigerator, which comprises a mechanical compression type refrigerator system and a lithium brominate absorptive-type refrigerator system, in the mechanical compression type refrigerator system, one end of a condenser is connected with a compressor, and the other end is connected with an evaporator through an expansion valve, in the lithium brominate absorptive-type refrigerator system, one end of a generator is connected with a second condenser, and the other end is connected with an absorber through a heat exchanger and a throttle valve, the mechanical compression type refrigerator system and the lithium brominate absorptive-type refrigerator system are connected through a heat collecting system, and the heat collecting system utilizes the heat which is produced in the condenser and the compressor to heat up lithium bromide solution in a generator. The compression-absorption mixed refrigerator integrates the mechanical compression type refrigerator system and the lithium brominate absorptive-type refrigerator system, which utilizes heat which is produced by the mechanical compression type refrigerator system to heat up lithium bromide solution in the lithium brominate absorptive-type refrigerator system, which not only saves energy source, but also has excellent refrigerating effect.

Description

Compression-absorption mixed refrigerating device
Technical field
The utility model relates to a kind of refrigerating and air-conditioning, specifically a kind of compression-absorption mixed refrigerating device that lithium-bromide absorption-type refrigerating machine system and mechanical compression type refrigerator system are combined.
Background technology
Existing refrigerating and air-conditioning system comprises mechanical compression type refrigerator system and lithium-bromide absorption-type refrigerating machine system.
Compression refrigerating machine is made up of compressor, condenser, evaporimeter, decompressor or throttle mechanism and some auxiliary equipment.Compressor is its nucleus equipment, relies on compressor to improve the pressure of cold-producing medium to realize the refrigeration machine of kind of refrigeration cycle.Its operation principle is: emit heat by the high steam of compressor discharge through condenser and be condensed into liquid.Then, liquid refrigerant is through the expansion valve throttling, and pressure and temperature reduces simultaneously, enters in the evaporimeter, draws the heat of refrigerating medium (removing to cool off again the object that is cooled with it) and flashes to steam.Then, steam enters compressor and continues compression, and so circulation endlessly.
The cold-producing medium of this class refrigeration machine can liquefy under normal temperature and common low temperature, periodically condensation and evaporation of cold-producing medium in the course of work of refrigeration machine.
Lithium-bromide absorption-type refrigerating machine is cold-producing medium with water, and lithium bromide water solution is an absorbent, produces the water at low temperature more than 0 ℃, is used for air-conditioning system more.The operation principle of lithium-bromide absorption-type refrigerating machine system is as follows:
Lithium bromide has extremely strong water imbibition, reduces but the solubility of lithium bromide in water is reduction with temperature.The steam partial pressure of lithium bromide water solution, more much smaller than the saturated vapor pressure of synthermal pure water down, so under uniform pressure, lithium bromide water solution has the ability of absorption temperature than its much lower steam, this is the mechanism of lithium-bromide absorption-type refrigerating machine.In fact adopt method, make it boiling, use for constantly evaporating thereby obtain distilled water to the weak solution heating.System is made up of generator, condenser, evaporimeter, choke valve, pump and solution heat exchanger etc.Weak solution raise pressure with pump the steam condensation at normal temperatures that boiling is produced before heating.Pressure reduction between generator and condenser (high-pressure side) and evaporimeter and the absorber (low-pressure side) keeps by expansion valve or other throttle mechanism that is installed on the corresponding pipeline.The temperature of concentrated solution of leaving generator is higher, and it is quite low to leave the temperature of weak solution of absorber.Concentrated solution be not cooled to the corresponding temperature of absorber pressure before can not absorb steam, and weak solution must be heated to the corresponding saturation temperature of generator pressure and just comes to life, therefore by a solution heat exchanger, make concentrated solution and weak solution before entering absorber and generator separately, carry out exchange heat each other, the weak solution temperature is raise, and the concentrated solution temperature descends.In sum, the course of work of lithium-bromide absorption-type refrigerating machine can be divided into two parts:
(1) refrigerant vapour that produces in the generator is condensed into water as refrigerant in condenser, enters evaporimeter through throttle mechanism, and evaporation under low pressure produces refrigeration effect.
Enter absorber after the concentrated solution step-down of (2) flowing out in the generator, absorb the refrigerant vapour that produces by evaporimeter, form weak solution, weak solution is delivered to generator, reheat, form concentrated solution with pump.Carry out so repeatedly with cocycle, finally reach the purpose of producing low-temperature cold water.
Existing two kinds of refrigerating and air-conditioning systems all need to consume a large amount of electric energy and heat energy when work.On the one hand, the generator of lithium-bromide absorption-type refrigerating machine system need heat lithium-bromide solution by high temperature, and on the other hand, the condenser of compression refrigerating machine will outwards discharge a large amount of heats.Owing to energy is not carried out reasonable use, causes a large amount of losses of energy.
Summary of the invention
For energy savings, reduce energy loss, the purpose of this utility model provides a kind of compression-absorption mixed refrigerating device, this mixed refrigerating device combines lithium-bromide absorption-type refrigerating machine system and mechanical compression type refrigerator system, the heat that utilizes the mechanical compression type refrigerator system to produce heats the lithium-bromide solution in the lithium-bromide absorption-type refrigerating machine system, not only saved the energy, and good refrigeration effect.
The purpose of this utility model is by the following technical programs
A kind of compression-absorption mixed refrigerating device, comprise mechanical compression type refrigerator system and lithium-bromide absorption-type refrigerating machine system, wherein, the mechanical compression type refrigerator system comprises compressor, condenser, evaporimeter and expansion valve, one end of condenser is connected with compressor, and the other end is connected with evaporimeter by expansion valve; The lithium-bromide absorption-type refrigerating machine system comprises generator, second condenser, second evaporimeter and absorber, one end of generator is connected with second condenser, the other end is connected with absorber with choke valve by heat exchanger, it is characterized in that: described mechanical compression type refrigerator system is connected by collecting system with the lithium-bromide absorption-type refrigerating machine system; Described collecting system heats the heat of condenser and compressor generation to the lithium-bromide solution in the generator.
On the one hand, because the condenser and the compressor of mechanical compression type refrigerator system will give out a large amount of heats, all be directly heat to be discharged in the air when using at present, not only cause energy waste, and polluted environment.On the other hand, the generator in the lithium-bromide absorption-type refrigerating machine system need heat lithium-bromide solution, requires the expenditure of energy.In the utility model, described collecting system is exactly to comprise that compressor and condenser also have generator heat transmission system together, condenser in this system and compressor are thermals source, can use heat transfer medium to be connected and distribute heat with generator, or directly integrate generator and transmit heat, so that reduce the heat transmission loss.
The utility model gives out a large amount of heats with condenser and compressor and directly is used for lithium-bromide solution is heated, and the radiating tube of condenser is the heater in the generator, like this, has not only saved the energy, and has reduced the pollution to environment.
Collecting system of the present utility model produces the condenser and the compressor of mechanical compression type refrigerator system in the Compressed Gas process heat removes to heat the generator in the lithium-bromide absorption-type refrigerating machine system, thereby bromizates the work of lithium Absorption Refrigerator.Compared with prior art, the utility model only just can allow lithium-bromide absorption-type refrigerating machine also start working with the energy of a driving device compression refrigerating machine work, and promptly two kinds of refrigeration machines are all worked, not only good refrigeration effect, and energy savings, reduce environmental pollution.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
A kind of compression-absorption mixed refrigerating device described in the utility model comprises mechanical compression type refrigerator system 1, lithium-bromide absorption-type refrigerating machine system 2 and collecting system 3.Wherein, mechanical compression type refrigerator system 1 comprises compressor 11, condenser 12, evaporimeter 13 and expansion valve 14.Compressor 11 is connected with condenser 12, is emitted heat and is condensed into liquid through condenser 12 by the high steam that compressor 11 is discharged.Then, liquid refrigerant is through the expansion valve throttling, and pressure and temperature reduces simultaneously, enters in the evaporimeter 13, draws the heat of refrigerating medium and flashes to steam, and environment is produced refrigeration.Then, steam enters compressor 11 and continues compression, and so circulation endlessly.In this process, compressor 11 will produce a large amount of heats with condenser 12.
Lithium-bromide absorption-type refrigerating machine system 2 comprises generator 21, second condenser 22, second evaporimeter 23 and absorber 24, one end of generator 21 is connected with second condenser 22, the other end is connected with absorber 24 with choke valve 26 by heat exchanger 25, during work, cold water in second evaporimeter 23 by from the cryogenic coolant water cooling after the second condenser 22 decompression throttlings, water as refrigerant self evaporates after absorbing the cold water heat, become refrigerant vapour, enter in the absorber 24, absorbed by concentrated solution, concentrated solution becomes weak solution.The weak solution that absorber is 24 li is sent to heat exchanger 25 back temperature by solution pump 27 and raises, and enters generator 21 at last, and weak solution is heated in generator 21, becomes final concentrated solution.The concentrated solution heat exchanger 25 of flowing through, temperature is lowered, and enters absorber 24, drips to drench on cooling water pipe, absorbs the refrigerant vapour from second evaporimeter 23, becomes weak solution.On the other hand, in generator 21, the water vapour that produces behind the outside high temperature heating lithium-bromide solution enters second condenser 22 and is cooled, through the decompression throttling, become cryogenic coolant water, enter second evaporimeter 23, drip and drench on cold water pipe, cooling enters the cold water of second evaporimeter 23, reach the purpose of refrigeration, carry out so repeatedly with cocycle.
In the accompanying drawing, Q1 is in the mechanical compression type refrigerator system 1, and a large amount of heats that compressor 11 and condenser 12 produce will import in the generator 21 of lithium-bromide absorption-type refrigerating machine system 2 as thermal source and heat; Q2 represents outwards to discharge from the high temperature refrigerant vapour of generator 21 liberated heat that liquefies second condenser 22; Q3 represents that water as refrigerant is sprayed on the surface of second evaporimeter 23, absorbs the heat of the cooled material in the heat-transfer pipe of flowing through; Q4 is that the bromize lithium concentrated solution with extremely strong absorption refrigerant vapour ability drenches down from absorber 24 tops, and the heat abstractor in the absorber 24 of flowing through is emitted heat.
Mechanical compression type refrigerator system 1 is connected by collecting system 3 with lithium-bromide absorption-type refrigerating machine system 2; Collecting system 3 is to comprise that compressor 11 and condenser 12 also have generator 21 heat transmission system together, and condenser 12 in this system and compressor 11 are thermals source, and the lithium-bromide solution in the generator 21 is heated.Collecting system 3 can use heat transfer medium 31 to be connected with generator 21 and distribute heat, or directly integrates generator 21 and transmit heat, so that reduce the heat transmission loss.Heat transfer medium 31 can be a heat pipe.
The utility model directly utilizes the condenser of mechanical compression type refrigerator system and a large amount of heats that compressor gives out, be used for the lithium-bromide solution in the generator in the lithium-bromide absorption-type refrigerating machine system is heated, not only energy savings, and good refrigeration effect reduces environmental pollution.

Claims (2)

1, a kind of compression-absorption mixed refrigerating device, comprise mechanical compression type refrigerator system (1) and lithium-bromide absorption-type refrigerating machine system (2), wherein, mechanical compression type refrigerator system (1) comprises compressor (11), condenser (12), evaporimeter (13) and expansion valve (14), one end of condenser (12) is connected with compressor (11), and the other end is connected with evaporimeter (13) by expansion valve (14); Lithium-bromide absorption-type refrigerating machine system (2) comprises generator (21), second condenser (22), second evaporimeter (23) and absorber (24), one end of generator (21) is connected with second condenser (22), the other end is connected with absorber (24) with choke valve (26) by heat exchanger (25), and it is characterized in that: described mechanical compression type refrigerator system (1) is connected by collecting system (3) with lithium-bromide absorption-type refrigerating machine system (2); Described collecting system (3) heats the heat of condenser (12) and compressor (11) generation to the lithium-bromide solution in the generator (21).
2, compression-absorption mixed refrigerating device according to claim 1 is characterized in that: the heat that described collecting system (3) produces compressor (11) and condenser (12) uses heat transfer medium (13) to be connected with generator (21) and distribute heat.
CNU2007200440558U 2007-10-10 2007-10-10 Compression-absorption mixed refrigerator Expired - Fee Related CN201100780Y (en)

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Application Number Priority Date Filing Date Title
CNU2007200440558U CN201100780Y (en) 2007-10-10 2007-10-10 Compression-absorption mixed refrigerator

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Application Number Priority Date Filing Date Title
CNU2007200440558U CN201100780Y (en) 2007-10-10 2007-10-10 Compression-absorption mixed refrigerator

Publications (1)

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CN201100780Y true CN201100780Y (en) 2008-08-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101957035A (en) * 2010-05-14 2011-01-26 王开明 Vaporization heat fully recyclable lithium bromide central air-conditioning
CN102230686A (en) * 2011-06-12 2011-11-02 浙江理工大学 Lithium bromide absorption-compression type series boosting refrigeration/heating pump system
CN102635972A (en) * 2012-04-13 2012-08-15 太原理工大学 Cold-storing type solar-energy spraying and compression coupling refrigerating device
CN103017400A (en) * 2013-01-14 2013-04-03 西安交通大学 Compression/absorption type combined heat pump suitable for intelligent comprehensive urban energy resource regulation
CN103649649A (en) * 2010-12-27 2014-03-19 特迈斯有限公司 Hybrid absorption-compression chiller
CN106196726A (en) * 2016-08-24 2016-12-07 北京联力源科技有限公司 High temperature heat pump system and round-robin method thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101957035A (en) * 2010-05-14 2011-01-26 王开明 Vaporization heat fully recyclable lithium bromide central air-conditioning
CN101957035B (en) * 2010-05-14 2012-10-03 王开明 Vaporization heat fully recyclable lithium bromide central air-conditioning
CN103649649A (en) * 2010-12-27 2014-03-19 特迈斯有限公司 Hybrid absorption-compression chiller
CN102230686A (en) * 2011-06-12 2011-11-02 浙江理工大学 Lithium bromide absorption-compression type series boosting refrigeration/heating pump system
CN102635972A (en) * 2012-04-13 2012-08-15 太原理工大学 Cold-storing type solar-energy spraying and compression coupling refrigerating device
CN102635972B (en) * 2012-04-13 2013-04-17 太原理工大学 Cold-storing type solar-energy spraying and compression coupling refrigerating device
CN103017400A (en) * 2013-01-14 2013-04-03 西安交通大学 Compression/absorption type combined heat pump suitable for intelligent comprehensive urban energy resource regulation
CN106196726A (en) * 2016-08-24 2016-12-07 北京联力源科技有限公司 High temperature heat pump system and round-robin method thereof

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C17 Cessation of patent right
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Granted publication date: 20080813

Termination date: 20091110