CN103363704B - The How It Works of evaporimeter connected system structure in refrigeration plant - Google Patents
The How It Works of evaporimeter connected system structure in refrigeration plant Download PDFInfo
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- CN103363704B CN103363704B CN201310257322.XA CN201310257322A CN103363704B CN 103363704 B CN103363704 B CN 103363704B CN 201310257322 A CN201310257322 A CN 201310257322A CN 103363704 B CN103363704 B CN 103363704B
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Abstract
The invention provides the How It Works of evaporimeter connected system structure in a kind of refrigeration plant.There is the problem of the upper limit in the refrigerating capacity it solving existing refrigeration configuration and the method for operation.In this refrigeration plant, evaporimeter connected system structure comprises the compressor, condenser, some flow controllers and the some evaporimeters that form circulation serial connection, the first evaporimeter is connected by first throttle device between condenser with some evaporimeters, second choke connects the second evaporimeter, be arranged in order connection, and the feed liquor top place of some flow controllers arranges liquid inlet electromagnetic valve, some evaporimeters are connected in series in turn, and the serial connection pipeline of every two adjacent vaporizers sets out liquid electromagnetic valve, branch's valve port of liquid outlet electromagnetic valve is by bye-pass and connect and gather connection compressor.The present invention first in parallel lifting draws warm speed, the warmer degree of depth is drawn in lifting of connecting, and effectively improves refrigerating capacity, shortens the available machine time, reduces the power consumption of compressor, reach energy-saving and emission-reduction object.
Description
Technical field
The invention belongs to technical field of refrigeration equipment, relate to a kind of about the assembly structure, particularly in a kind of refrigeration plant How It Works of evaporimeter connected system structure of multi-section evaporimeter in refrigeration.
Background technology
Refrigeration plant is refrigerating operation equipment used.Different refrigerating method uses different equipment, and most widely used is vapor compression refrigeration at present, and capital equipment has compressor (see fluid conveying machine), condenser, evaporimeter and choke valve.Compressor is used for compression and refrigerant conveying steam, wherein with piston type and centrifugal most widely used.
At present for the kind of refrigeration cycle of a single-stage, carried out the heat in absorption refrigeration space by an evaporimeter, when running under design conditions, its refrigerating capacity is limited, also makes the many actings of compressor, and then can not reach the object of energy-saving and emission-reduction.
For the system that four large parts in a refrigeration plant have been chosen under design conditions, the corresponding the best of fixing capillary pipe length rushes fluence, under the prerequisite not changing four large parts itself, flow can be increased by improving charging amount, but this can rush fluence by off-target, and when cold-producing medium punching is noted to a certain extent, liquid refrigeration working medium can be full of in evaporimeter, increase again and rush fluence, the heat transfer effect of evaporimeter is not also significantly improved, the increase of rushing fluence can cause condensing pressure and evaporating pressure to increase simultaneously, affect the performance of refrigeration system, system is made to depart from original design conditions, the refrigeration quality of high-quality cannot be realized.
Summary of the invention
The object of the invention is to there are the problems referred to above for existing technology, propose a kind of multi-section evaporimeter in same refrigeration space first function mode of connecting again in parallel, and then lifting is drawn warm speed and is drawn the How It Works of evaporimeter connected system structure in the refrigeration plant of the warm degree of depth.
Object of the present invention realizes by following technical proposal: evaporimeter connected system structure in refrigeration plant, comprise the compressor forming circulation serial connection, condenser, some flow controllers and some evaporimeters, it is characterized in that, the first evaporimeter is connected by first throttle device between described condenser with some evaporimeters, second choke connects the second evaporimeter, be arranged in order connection, and the feed liquor top place of described some flow controllers arranges liquid inlet electromagnetic valve, described some evaporimeters are connected in series in turn, and the serial connection pipeline of described every two adjacent vaporizers sets out liquid electromagnetic valve, branch's valve port of described liquid outlet electromagnetic valve is by bye-pass and connect and gather connection above-mentioned compressor.
In this refrigeration plant, evaporimeter connected system structure is drawing the temperature initial stage, parallel pathways is formed by the interoperation of some magnetic valves, use multi-section evaporimeter parallel connection refrigeration, increase effective heat exchange efficiency and the flow system flow of overall evaporimeter, specifically be equivalent to multiple refrigeration system run at the same time, thus draw warm speed obviously to accelerate, the uniformity of the temperature inside the box significantly improves simultaneously; After drawing temperature to a certain extent, switched by some magnetic valves and coordinate formation tandem paths, use multi-section evaporator series to freeze, and then system gets back to original design conditions, to reach the degree of depth of freezing accordingly.
In above-mentioned refrigeration plant in evaporimeter connected system structure, increase and be connected with assisting restriction choke between described condenser and the first evaporimeter, the feed liquor top of described assisting restriction choke connects establishes above-mentioned liquid inlet electromagnetic valve.If the flow of the first capillary does not meet the refrigerating fluid input of corresponding evaporimeter, then switch and use assisted capillary to reach necessary requirement, namely according to input value situation configuration connection first capillary or the assisted capillary of actual evaporator, and the make-break operation of assisted capillary is controlled by liquid inlet electromagnetic valve equally.
In above-mentioned refrigeration plant in evaporimeter connected system structure, described flow controller is specially capillary.
In above-mentioned refrigeration plant in evaporimeter connected system structure, described flow controller is specially expansion valve.
In refrigeration plant, the How It Works of evaporimeter connected system structure, is characterized in that, comprises following operation steps:
(1), start shooting the starting stage run, the N capillary that liquid inlet electromagnetic valve is opened connection first capillary, the second capillary and arranged in turn, liquid outlet electromagnetic valve closes the serial connection pipeline between adjacent vaporizers, opens and connects bye-pass;
(2), make the cold-producing medium after compressor work enter condenser by escape pipe and carry out condensation liquefaction, divide the N capillary flowing through the first capillary, the second capillary and arrange in turn again, the N evaporimeter flowing through the first evaporimeter, the second evaporimeter in synchronous parallel connection and arrange in turn, sweat cooling efficiency is carried out at double by evaporimeter parallel way, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3) flow of refrigerant, in each evaporimeter gathers and flows back to compressor by muffler after bye-pass;
(4), the warm limit is drawn when what reach evaporimeter parallel way, liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary blocking the second capillary and arrange in turn, liquid outlet electromagnetic valve opens the serial connection pipeline between adjacent vaporizers, closes and connects bye-pass;
(5), make the cold-producing medium after compressor work enter condenser by escape pipe and carry out condensation liquefaction, the first evaporimeter is entered again by the first capillary-compensated step-down, then flow through the N evaporimeter arranging series connection mutually in turn, the lifting of drawing the warm degree of depth is carried out, to reach design conditions by evaporator series mode;
(6) after, flowing through last position evaporimeter, cold-producing medium flows back to compressor by muffler.
The How It Works of evaporimeter connected system structure in this refrigeration plant, wherein the warm limit of drawing of evaporimeter parallel way determines according to evaporimeter in practical application and structure attribute, concrete affect this draw the factor of the warm limit comprise capillary apolegamy model, parallel evaporator quantity, the parameters such as the specification of every portion evaporimeter.
In above-mentioned refrigeration plant evaporimeter connected system structure How It Works in, describedly initially draw in warm speed stage, liquid inlet electromagnetic valve opens the N capillary being communicated with assisted capillary, the second capillary and arranging in turn; The described later stage draws in warm advanced stages, and liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary blocking assisted capillary, the second capillary and arrange in turn.
Compared with prior art, the connection in series-parallel constructor of the How It Works of evaporimeter connected system structure conservative control multi-section evaporimeter in same refrigeration space in this refrigeration plant, first in parallel lifting is adopted to draw warm speed, series connection promotes the substep function mode of drawing the warm degree of depth again, ensure thus and meet design conditions, that accelerates total system draws warm speed simultaneously; Effectively raise the refrigerating capacity of refrigeration system, shorten the available machine time of compressor; Make again the increase of evaporator heat exchange efficiency be greater than the increase of compressor power consumption, namely reduce the power consumption of compressor, reach the object of energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment one of evaporimeter connected system structure in this refrigeration plant.
Fig. 2 is the structural representation of the embodiment two of evaporimeter connected system structure in this refrigeration plant.
In figure, 1, compressor; 2, condenser; 3, device for drying and filtering; 4, liquid inlet electromagnetic valve; 5, the first capillary; 6, the second capillary; 7, the first evaporimeter; 8, liquid outlet electromagnetic valve; 9, the second evaporimeter; 10, assisted capillary.
Detailed description of the invention
Be below specific embodiments of the invention and by reference to the accompanying drawings, technical scheme of the present invention is further described, but the present invention be not limited to these embodiments.
Embodiment one
As shown in Figure 1, in this refrigeration plant, evaporimeter connected system structure comprises the compressor 1, condenser 2, the some flow controllers of device for drying and filtering 3 and the some evaporimeters that form circulation serial connection.
Wherein flow controller can adopt capillary, expansion valve etc. can realize the parts of throttling, embody rule capillary in the present embodiment.In same refrigeration space, apply two evaporimeters, i.e. called after first evaporimeter 7 and the second evaporimeter 9 in the present embodiment, and the large ting model of two evaporimeters differently according to demand can be arranged; Therefore corresponding use two capillaries, i.e. called after first capillary 5 and the second capillary 6.
The outlet side of device for drying and filtering 3 connects in turn establishes liquid inlet electromagnetic valve 4, in multiple branches valve port of liquid inlet electromagnetic valve 4, one connects the first evaporimeter 7 by the first capillary 5, another connects the second evaporimeter 9 by the second capillary 6, and be connected in series in turn by pipeline between the first evaporimeter 7 with the second evaporimeter 9, this serial connection pipeline sets out liquid electromagnetic valve 8, another branch's valve port of liquid outlet electromagnetic valve 8 is by bye-pass and connect the second evaporimeter 9, is finally gathered the muffler connecting compressor 1 by pipeline.
According to evaporimeter connected system structure in above-mentioned refrigeration plant, its How It Works comprises following operation steps:
(1), starting stage of running of start, liquid inlet electromagnetic valve 4 opens connection first capillary 5, second capillary 6, and liquid outlet electromagnetic valve 8 is closed and is connected in series pipeline between the first evaporimeter 7 with the second evaporimeter 9, opens and connects bye-pass;
(2) cold-producing medium after, making compressor 1 do work enters condenser 2 by escape pipe and carries out condensation liquefaction, divide again and flow through the first capillary 5, second capillary 6, the first evaporimeter 7, second evaporimeter 9 is flowed through in synchronous parallel connection, sweat cooling efficiency is carried out at double by two evaporimeter parallel waies, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3) flow of refrigerant, in the first evaporimeter 7 gathers with the cold-producing medium of the second evaporimeter 9 after bye-pass, flows back to compressor 1 by muffler;
(4), when what reach two evaporimeter parallel waies draw the warm limit, liquid inlet electromagnetic valve 4 is communicated with the first capillary 5, blocks the second capillary 6, and liquid outlet electromagnetic valve 8 is opened and is connected in series pipeline between the first evaporimeter 7 with the second evaporimeter 9, closes and connects bye-pass;
(5) cold-producing medium after, making compressor 1 do work enters condenser 2 by escape pipe and carries out condensation liquefaction, the first evaporimeter 7 is entered again by the first capillary 5 reducing pressure by regulating flow, then flow through the second evaporimeter 9 in turn, the lifting of drawing the warm degree of depth is carried out, to reach design conditions by two evaporator series modes;
(6) cold-producing medium, flowed out after the second evaporimeter 9 flows back to compressor 1 by muffler.
Wherein the warm limit of drawing of evaporimeter parallel way determines according to evaporimeter in practical application and structure attribute, specifically affects this and draws the factor of the warm limit to comprise the capillary model of apolegamy, the quantity of parallel evaporator, the parameters such as the specification of every portion evaporimeter.
In this refrigeration plant, evaporimeter connected system structure may be used for two-bed system, also may be used for superposition type system.
Drawing the temperature initial stage, parallel pathways is formed by the interoperation of some magnetic valves, use multi-section evaporimeter parallel connection refrigeration, increase effective heat exchange efficiency and the flow system flow of overall evaporimeter, specifically be equivalent to multiple refrigeration system run at the same time, thus draw warm speed obviously to accelerate, the uniformity of the temperature inside the box significantly improves simultaneously; After drawing temperature to a certain extent, switched by some magnetic valves and coordinate formation tandem paths, use multi-section evaporator series to freeze, and then system gets back to original design conditions, to reach the degree of depth of freezing accordingly.
Embodiment two
As shown in Figure 2, the present embodiment with the structure of embodiment one and principle substantially identical, different place is:
Increase between condenser 2 and the first evaporimeter 7 and be connected with assisted capillary 10, and the feed liquor top of assisted capillary 10 connects and establishes liquid inlet electromagnetic valve 4.First capillary 5 and assisted capillary 10 are the capillary of concrete two kinds of different sizes.If the flow of the first capillary 5 does not meet the refrigerating fluid input of corresponding evaporimeter, then switch and use assisted capillary 10 to reach necessary requirement, namely according to input value situation configuration connection first capillary 5 or the assisted capillary 10 of actual evaporator, and the make-break operation of assisted capillary 10 is controlled by liquid inlet electromagnetic valve 4 equally.
Initially draw in warm speed stage, liquid inlet electromagnetic valve 4 is opened and is communicated with assisted capillary 10, second capillary 6; Later stage draws in warm advanced stages, and liquid inlet electromagnetic valve 4 is communicated with the first capillary 5, blocks assisted capillary 10 and the second capillary 6.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ compressor 1 herein; Condenser 2; Device for drying and filtering 3; Liquid inlet electromagnetic valve 4; First capillary 5; Second capillary 6; First evaporimeter 7; Liquid outlet electromagnetic valve 8; Second evaporimeter 9; Term such as assisted capillary 10 grade, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (5)
1. the How It Works of evaporimeter connected system structure in refrigeration plant, evaporimeter connected system structure comprises the compressor forming circulation serial connection, condenser, some flow controllers and some evaporimeters, the first evaporimeter is connected by first throttle device between described condenser with some evaporimeters, second choke connects the second evaporimeter, be arranged in order connection, and the feed liquor top place of described some flow controllers arranges liquid inlet electromagnetic valve, described some evaporimeters are connected in series in turn, and the serial connection pipeline of every two adjacent vaporizers sets out liquid electromagnetic valve, branch's valve port of described liquid outlet electromagnetic valve is by bye-pass and connect and gather connection above-mentioned compressor, it is characterized in that, comprise following operation steps:
(1), start shooting the starting stage run, liquid inlet electromagnetic valve opens the N flow controller being communicated with first throttle device, second choke and arranging in turn, and liquid outlet electromagnetic valve closes the serial connection pipeline between adjacent vaporizers, opens and connects bye-pass;
(2), make the cold-producing medium after compressor work enter condenser by escape pipe and carry out condensation liquefaction, divide the N flow controller flowing through first throttle device, second choke and arrange in turn again, the N evaporimeter flowing through the first evaporimeter, the second evaporimeter in synchronous parallel connection and arrange in turn, sweat cooling efficiency is carried out at double by evaporimeter parallel way, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3) flow of refrigerant, in each evaporimeter gathers and flows back to compressor by muffler after bye-pass;
(4), the warm limit is drawn when what reach evaporimeter parallel way, liquid inlet electromagnetic valve is communicated with first throttle device, the N flow controller blocking second choke and arrange in turn, liquid outlet electromagnetic valve opens the serial connection pipeline between adjacent vaporizers, closes and connects bye-pass;
(5), make the cold-producing medium after compressor work enter condenser by escape pipe and carry out condensation liquefaction, the first evaporimeter is entered again by first throttle device reducing pressure by regulating flow, then flow through the N evaporimeter arranging series connection mutually in turn, the lifting of drawing the warm degree of depth is carried out, to reach design conditions by evaporator series mode;
(6) after, flowing through last position evaporimeter, cold-producing medium flows back to compressor by muffler.
2. the How It Works of evaporimeter connected system structure in refrigeration plant according to claim 1, it is characterized in that, increase between described condenser and the first evaporimeter and be connected with assisting restriction choke, the feed liquor top of described assisting restriction choke connects establishes above-mentioned liquid inlet electromagnetic valve.
3. the How It Works of evaporimeter connected system structure in refrigeration plant according to claim 1 and 2, it is characterized in that, described flow controller is specially capillary.
4. the How It Works of evaporimeter connected system structure in refrigeration plant according to claim 1 and 2, it is characterized in that, described flow controller is specially expansion valve.
5. the How It Works of evaporimeter connected system structure in refrigeration plant according to claim 2, is characterized in that, describedly initially draws in warm speed stage, and liquid inlet electromagnetic valve opens the N flow controller being communicated with assisting restriction choke, second choke and arranging in turn; The described later stage draws in warm advanced stages, and liquid inlet electromagnetic valve is communicated with first throttle device, the N flow controller blocking assisting restriction choke, second choke and arrange in turn.
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| CN106766526A (en) * | 2016-12-26 | 2017-05-31 | 青岛海尔股份有限公司 | Connection in series-parallel Dual-evaporator refrigeration system, the refrigerator with the system and control method |
| CN110953740B (en) * | 2019-12-23 | 2020-11-10 | 珠海格力电器股份有限公司 | Refrigeration system for uniform-temperature cold plate and control method |
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| CN203464527U (en) * | 2013-06-26 | 2014-03-05 | 青岛澳柯玛超低温冷冻设备有限公司 | Connection system structure for evaporators in refrigeration equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB715682A (en) * | 1950-10-12 | 1954-09-22 | Kramer Trenton Co | Defrosting system for refrigerating apparatus |
| JPH07180918A (en) * | 1993-12-22 | 1995-07-18 | Toshiba Ave Corp | Refrigerating cycle using non-azeotropic mixture refrigerant |
| CN1114035A (en) * | 1994-06-20 | 1995-12-27 | 青岛制冷技术研究所 | Directly cooling two temp. double control refrigerating system |
| JPH11173729A (en) * | 1997-12-10 | 1999-07-02 | Toshiba Corp | Refrigerator |
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Address after: 266510 No. 315, Bay Road, Huangdao District, Shandong, Qingdao Patentee after: Qingdao Aucma biomedical Co.,Ltd. Address before: 266510, No. 315, Bay Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: QINGDAO AUCMA ULTRA LOW TEMPERATURE FREEZING MACHINES Co.,Ltd. |
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