CN202304070U - Jet refrigerating unit adopting lightweight plate-fin heat exchanger - Google Patents

Jet refrigerating unit adopting lightweight plate-fin heat exchanger Download PDF

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Publication number
CN202304070U
CN202304070U CN2011203638228U CN201120363822U CN202304070U CN 202304070 U CN202304070 U CN 202304070U CN 2011203638228 U CN2011203638228 U CN 2011203638228U CN 201120363822 U CN201120363822 U CN 201120363822U CN 202304070 U CN202304070 U CN 202304070U
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CN
China
Prior art keywords
injector
heat exchanger
refrigerating unit
condenser
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011203638228U
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Chinese (zh)
Inventor
梁家鼎
高琳琳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongneng Dongxun New Energy Science & Technology (dalian) Co Ltd
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Zhongneng Dongxun New Energy Science & Technology (dalian) Co Ltd
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Priority to CN2011203638228U priority Critical patent/CN202304070U/en
Application granted granted Critical
Publication of CN202304070U publication Critical patent/CN202304070U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a jet refrigerating unit adopting lightweight plate-fin heat exchanger, belonging to the technical field of new energy and energy conservation. The jet refrigerating unit adopts a scheme that two jet pumps are connected in parallel and a shell-and-tube heat exchanger is replaced by a novel lightweight plate-fin heat exchanger, so that the controllable range of the unit load is wide, the overall weight is reduced by about 30%, the system floor area is decreased by more than 40% and the system performance index is increased by 10%-20%; furthermore, the system cost is directly reduced, the system refrigerant consumption is substantially reduced and the operating cost of a user is reduced. Meanwhile, a condenser particularly refers to an evaporative condenser which is a widely-used, efficient and energy-saving device, the cooling water amount of the heat exchanger is reduced and the application and popularization of the whole equipment are enhanced. The jet refrigerating unit has a simple structure, is convenient to use and maintain and is an efficient jet refrigerating unit of which the system can operate under a positive pressure, thus the application and popularization of the jet refrigerating unit can be greatly improved.

Description

Adopt the ejector refrigeration unit of thistle board fin heat exchanger
Technical field
The utility model relates to a kind of spray type refrigerating unit that adopts the thistle board fin heat exchanger, is to the recovery of the waste heat that produces in the industrial processes and the device of utilization, belongs to new forms of energy and field of energy-saving technology.
Background technology
At present, spray type refrigerating is a kind of machine that can utilize low-grade heat source to freeze, and uses more extensive in solar refrigeration and waste heat recovery refrigerating field.The structure of traditional injecting type system is that outlet links to each other respectively at generator exports, evaporator outlet and condenser inlet with compressed steam for the working steam import of injector, jetting steam caused import; Condensator outlet is divided into two-way; The choke valve of leading up to links to each other with evaporator outlet, and another road links to each other with the generator import through liquid pump.Each connects by refrigerant tubing and is communicated with realization.The heat exchanger that adopts in traditional spray type refrigerating system is a shell-and-tube heat exchanger, and not only heat exchange efficiency is low but also bulky, maintenance difficult.And mainly be to adopt with the freon refrigerant under water vapour or the negative pressure evaporation in the system, make system's negative pressure turn round, refrigeration decay and system's operation and maintenance cost are higher, and entire system is had relatively high expectations, and therefore the popularization of commercial Application is restricted.
The utility model content
The purpose of the utility model provides a kind of spray type refrigerating unit that adopts the thistle board fin heat exchanger; This unit is in the characteristics that keep original spray type refrigerating unit; Adopt the novel light plate-fin heat exchanger to substitute shell-and-tube heat exchanger; Solve the on the low side and volume problem bigger than normal of system effectiveness of original injecting type source pump, practiced thrift the cold-producing medium consumption, reduced cost.
The technical scheme of the utility model is: a kind of spray type refrigerating unit that adopts the thistle board fin heat exchanger; It mainly comprises condenser, reservoir, expansion valve, evaporimeter and a liquid pump; It also comprises a generator and injector; The outlet of reservoir connects expansion valve and liquid pump respectively through control valve, and the outlet of liquid pump is connected to the import of injector through generator, and the outlet of expansion valve is connected to the ejecting port of injector through evaporimeter; The outlet of injector is connected to reservoir through condenser, and the PLC centralized Control is adopted in electrical control.Said injector adopts first injector to be connected with second injector parallel connection; Said generator is connected to the working steam inlet of first injector and the working steam inlet that warp first control valve is connected to second injector; Evaporimeter is connected to the jetting steam caused inlet of first injector and the jetting steam caused inlet that warp second control valve is connected to second injector, and the outlet of the outlet of first injector and second injector is connected to condenser; Said generator and evaporimeter adopt the thistle board fin heat exchanger, and said condenser adopts evaporative condenser; Said refrigeration unit adopts environmental protection refrigerant as working media.
Said environmental protection refrigerant is selected from R134a cold-producing medium, R141b cold-producing medium or R236fa cold-producing medium.
The beneficial effect of the utility model is: this spray type refrigerating unit adopts two jet pump parallel connection schemes; Replaced shell-and-tube heat exchanger with the novel light plate-fin heat exchanger; Make that the load controlled range of unit is wide; Overall weight has reduced about 30%, and system's floor space reduces more than 40%, system performance index rising 10%-20%.Not only directly reduce system cost, also reduced the consumption of system refrigerant significantly, reduced user's operating cost.The evaporative condenser of condenser employing simultaneously is a kind of widely used energy-efficient equipment, and has reduced the investment and the maintenance cost of heat exchanger, but increased the promotion of complete equipment.This spray type refrigerating unit is simple in structure, working service convenient, the efficient spray type refrigerating unit of system's malleation running, and its promotion is greatly improved.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described further.
Accompanying drawing 1 is a kind of fundamental diagram that adopts the spray type refrigerating unit of thistle board fin heat exchanger.
Among the figure: 1, generator, a, thermal source advance, and b, thermal source go out, and 2, evaporimeter, c, cold water advance, and d, cold water go out; 3, condenser, 4, first injector, 4a, working steam inlet, 4b, jetting steam caused inlet, 4c, outlet; 5, second injector, 5a, working steam inlet, 5b, jetting steam caused inlet, 5c, outlet, 6, reservoir; 7, liquid pump, 8, expansion valve, 9, control valve, 10, first control valve, 11, second control valve.
The specific embodiment
According to accompanying drawing embodiment is further described below.
Fig. 1 shows a kind of fundamental diagram that adopts the spray type refrigerating unit of thistle board fin heat exchanger.Among the figure; High temperature waste hot water/the steam that produces on the commercial production is connected with generator 1, evaporimeter 2 through pipeline, water pump successively, and refrigerant liquid is divided into two-way from reservoir 6 outlets through pipeline; One the tunnel via liquid pump 7 entering generators 1; In generator 1, carry out heat exchange, finally become the refrigerant vapour of HTHP, generator 1 port of export is connected with the working steam inlet 4a of first injector 4 and the working steam inlet 5a of second injector 5 respectively through pipeline; Wherein be provided with first control valve 10 between generator 1 and pipeline that second injector 5 is connected, can adjust according to required load; Flow through expansion valve 8 of another road of refrigerant liquid gets into evaporimeters 2; Cold-producing medium and cold water carry out heat exchange in evaporimeter 2; The Cold water supply user of the lower temperature after the heat exchange is freezed; And the refrigerant vapour of cold-producing medium evaporation becoming low-temp low-pressure, the outlet of evaporimeter 2 is connected with the jetting steam caused inlet 4b of first injector 4 and the jetting steam caused inlet 5b of second injector 5 through pipeline, wherein is provided with second control valve 11 between the connecting line of the evaporimeter 2 and second injector 5.The outlet 4c of first injector 4 is connected condenser 3 with the outlet 5c of second injector 5 through pipeline, and condensation of refrigerant becomes liquid in condenser 3, and condensed refrigerant liquid is stored in the reservoir 6, thereby accomplishes a circulation.It is working media that this spray type refrigerating unit adopts R134a cold-producing medium, R141b cold-producing medium or R236fa cold-producing medium.
Above-mentioned refrigeration unit is when operation, and by the liquid refrigerant that reservoir 6 is supplied with, the one tunnel in expansion valve 8 entering evaporimeters 2; When becoming the refrigerant vapour of low pressure; Absorb the heat among the cold water c, produce the lower cold water d of temperature and be connected to user side utilization, like refrigeration; Another road receives boiler that the heating of high temperature fluid a is provided in generator 1, becomes the refrigerant vapour of high pressure.When the refrigerant vapour of high pressure gets into first injector 4 and second injector 5; The refrigerant vapour of injection low pressure mixes in first injector 4 and second injector 5 in the formation suppresses refrigerant vapour; Middle compacting refrigerant vapour is condensed into liquid refrigerant and gets into reservoir 6 in condenser 3, recycle.
Generator 1 all adopts the novel light plate-fin heat exchanger with evaporimeter 2; Condenser 3 adopts evaporative condenser; Because the whole set structure of employing of new type heat exchanger is compact more, operational efficiency is higher.Not only directly reduce system cost, also reduced the demand of system refrigerant significantly, reduced user's operating cost.In a word, whole system operation under positive pressure, simple in structure, stable, maintenance and practical and convenient is the new technology that can extensively be promoted.

Claims (2)

1. spray type refrigerating unit that adopts the thistle board fin heat exchanger; It mainly comprises a condenser (3), reservoir (6), expansion valve (8), evaporimeter (2) and liquid pump (7); It also comprises a generator (1) and injector; The outlet of reservoir (6) connects expansion valve (8) and liquid pump (7) respectively through control valve (9), and the outlet of liquid pump (7) is connected to the import of injector through generator (1), and the outlet of expansion valve (8) is connected to the ejecting port of injector through evaporimeter (2); The outlet of injector is connected to reservoir (6) through condenser (3), and the PLC centralized Control is adopted in electrical control; It is characterized in that: said injector adopts first injector (4) and second injector (5) to be connected in parallel; Said generator (1) is connected to the working steam inlet (4a) of first injector (4) and the working steam inlet (5a) that warp first control valve (10) is connected to second injector (5); Evaporimeter (2) is connected to the jetting steam caused inlet (4b) of first injector (4) and the jetting steam caused inlet (5b) that warp second control valve (11) is connected to second injector (5), and the outlet (4c) of first injector (4) and the outlet (5c) of second injector (5) are connected to condenser (3); Said generator (1) and evaporimeter (2) adopt the thistle board fin heat exchanger, and said condenser (3) adopts evaporative condenser; Said refrigeration unit adopts environmental protection refrigerant as working media.
2. the ejector refrigeration unit of employing novel light plate-fin heat exchanger according to claim 1 is characterized in that: said environmental protection refrigerant is selected from R134a cold-producing medium, R141b cold-producing medium or R236fa cold-producing medium.
CN2011203638228U 2011-09-26 2011-09-26 Jet refrigerating unit adopting lightweight plate-fin heat exchanger Expired - Fee Related CN202304070U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203638228U CN202304070U (en) 2011-09-26 2011-09-26 Jet refrigerating unit adopting lightweight plate-fin heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203638228U CN202304070U (en) 2011-09-26 2011-09-26 Jet refrigerating unit adopting lightweight plate-fin heat exchanger

Publications (1)

Publication Number Publication Date
CN202304070U true CN202304070U (en) 2012-07-04

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CN2011203638228U Expired - Fee Related CN202304070U (en) 2011-09-26 2011-09-26 Jet refrigerating unit adopting lightweight plate-fin heat exchanger

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042741A (en) * 2015-07-07 2015-11-11 同济大学 Jet refrigeration and active cooling beam combined applying system
WO2017029011A1 (en) * 2015-08-14 2017-02-23 Danfoss A/S A vapour compression system with at least two evaporator groups
US10775086B2 (en) 2015-10-20 2020-09-15 Danfoss A/S Method for controlling a vapour compression system in ejector mode for a prolonged time
US11333449B2 (en) 2018-10-15 2022-05-17 Danfoss A/S Heat exchanger plate with strengthened diagonal area

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105042741A (en) * 2015-07-07 2015-11-11 同济大学 Jet refrigeration and active cooling beam combined applying system
CN105042741B (en) * 2015-07-07 2018-06-29 同济大学 Ejector refrigeration and active beam-cooling use in conjunction system
WO2017029011A1 (en) * 2015-08-14 2017-02-23 Danfoss A/S A vapour compression system with at least two evaporator groups
US10816245B2 (en) 2015-08-14 2020-10-27 Danfoss A/S Vapour compression system with at least two evaporator groups
US10775086B2 (en) 2015-10-20 2020-09-15 Danfoss A/S Method for controlling a vapour compression system in ejector mode for a prolonged time
US11333449B2 (en) 2018-10-15 2022-05-17 Danfoss A/S Heat exchanger plate with strengthened diagonal area

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20150926

EXPY Termination of patent right or utility model