CN103363704A - Connection system structure and operation method for evaporators in refrigeration equipment - Google Patents
Connection system structure and operation method for evaporators in refrigeration equipment Download PDFInfo
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- CN103363704A CN103363704A CN201310257322XA CN201310257322A CN103363704A CN 103363704 A CN103363704 A CN 103363704A CN 201310257322X A CN201310257322X A CN 201310257322XA CN 201310257322 A CN201310257322 A CN 201310257322A CN 103363704 A CN103363704 A CN 103363704A
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Abstract
The invention provides a connection system structure and an operation method for evaporators in refrigeration equipment to solve the problem of upper limit of refrigerating capacity in the existing refrigeration construction and operation method. The connection system structure for the evaporators in the refrigeration equipment comprises a compressor, a condenser, a plurality of flow controllers and a plurality of evaporators which are in circulating series connection, where a first flow controller is connected with a first evaporator, a second flow controller is connected with a second evaporator and the next flow controller is sequentially connected with the next evaporator between the condenser and the plurality of evaporators, liquid inlet start ends of the plurality of flow controllers are provided with liquid inlet electromagnetic valves, the plurality of evaporators are sequentially connected in series, a liquid outlet electromagnetic valve is arranged on a series connection pipeline on every two adjacent evaporators, and branch valve ports of the liquid outlet electromagnetic valves pass through branch pipelines and are joined and collected to be connected to the compressor. According to the invention, parallel connection is firstly adopted to increase the temperature raising speed, then series connection is adopted to increase the temperature raising speed, so that the refrigerating capacity is effectively increased, the power consumption of the compressor is reduced, and the purposes of energy conservation and emission reduction are fulfilled.
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 evaporimeter connected system structure and How It Works of multi-section evaporimeter in refrigeration.
Background technology
Refrigeration plant is the used equipment of refrigerating operation.Different refrigerating methods use different equipment, and at present most widely used is vapor compression refrigeration, and capital equipment has compressor (seeing 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, come the heat in absorption refrigeration space by an evaporimeter, when moving under design conditions, its refrigerating capacity is limited, also so that compressor does work more, and then can not reach the purpose of energy-saving and emission-reduction.
The system that under design conditions, has chosen for four large parts in the refrigeration plant, the corresponding the best of fixing capillary pipe length is rushed fluence, under the prerequisite that does not change four large parts itself, can increase flow by improving charging amount, but this can rush fluence by off-target, and after the cold-producing medium punching is annotated to a certain degree, can be full of liquid refrigeration working medium in the evaporimeter, increase again and rush fluence, the heat transfer effect of evaporimeter does not significantly improve yet, and the increase of rushing fluence can cause condensing pressure and evaporating pressure to increase simultaneously, affects the performance of refrigeration system, make system depart from original design conditions, can't realize the refrigeration quality of high-quality.
Summary of the invention
The objective of the invention is to have the problems referred to above for existing technology, proposed the first again function mode of series connection in parallel of a kind of multi-section evaporimeter in same refrigeration space, and then promoted and draw evaporimeter connected system structure and How It Works in warm speed and the refrigeration plant that draws the warm degree of depth.
Purpose of the present invention can realize by following technical proposal: evaporimeter connected system structure in the refrigeration plant, comprise the compressor that forms the circulation serial connection, condenser, some flow controllers and some evaporimeters, it is characterized in that, be connected the first evaporimeter by the first throttle device between described condenser and the some evaporimeters, the second flow controller connects the second evaporimeter, be arranged in order connection, and the place, feed liquor top of described some flow controllers arranges liquid inlet electromagnetic valve, described some evaporimeters are connected in series in turn, and set out liquid electromagnetic valve on the serial connection pipeline of described per two adjacent evaporimeters, branch's valve port of described liquid outlet electromagnetic valve is by bye-pass and connect and gather the connection above-mentioned compressor.
Evaporimeter connected system structure is being drawn the temperature initial stage in this refrigeration plant, interoperation by some magnetic valves forms path in parallel, what use is multi-section evaporimeter refrigeration in parallel, effective heat exchange efficiency and the flow system flow of whole evaporimeter have been increased, specifically being equivalent to a plurality of refrigeration systems moves at the same time, thereby draw warm speed obviously to accelerate, the uniformity of the temperature inside the box obviously improves simultaneously; When drawing temperature after to a certain degree, switch to cooperate by some magnetic valves and form tandem paths, use be multi-section evaporator series refrigeration, and then system gets back to original design conditions, to reach the corresponding refrigeration degree of depth.
In the evaporimeter connected system structure, increase is connected with assisting restriction choke between described condenser and the first evaporimeter in above-mentioned refrigeration plant, and the feed liquor top of described assisting restriction choke connects establishes above-mentioned liquid inlet electromagnetic valve.If the first flow capillaceous does not meet the refrigerating fluid input of corresponding evaporimeter, then switch and use assisted capillary to reach necessary requirement, i.e. input value situation configuration according to actual evaporator is communicated with the first capillary or assisted capillary, and the make-break operation of assisted capillary is controlled by liquid inlet electromagnetic valve equally.
In the evaporimeter connected system structure, described flow controller is specially capillary in above-mentioned refrigeration plant.
In the evaporimeter connected system structure, described flow controller is specially expansion valve in above-mentioned refrigeration plant.
The How It Works of evaporimeter connected system structure is characterized in that in the refrigeration plant, comprises following operation steps:
(1), starting stage of start operation, liquid inlet electromagnetic valve is opened the N capillary that is communicated with the first capillary, the second capillary and arranges in turn, liquid outlet electromagnetic valve is closed the serial connection pipeline between the adjacent evaporimeter, opens and connect bye-pass;
(2), make cold-producing medium after the compressor work enter condenser by escape pipe and carry out condensation liquefaction, shunt again through the first capillary, the second capillary and the N capillary arranged in turn, be the N evaporimeter that synchronous parallel connection is flowed through the first evaporimeter, the second evaporimeter and arranged in turn, carry out at double sweat cooling efficient by the evaporimeter parallel way, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3), the cold-producing medium in each evaporimeter is flowed through to gather by muffler behind the bye-pass and is flowed back to compressor;
(4), when reaching the warm limit of drawing of evaporimeter parallel way, liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary that blocks the second capillary and arrange in turn, liquid outlet electromagnetic valve is opened the serial connection pipeline between the adjacent evaporimeter, closes and connect bye-pass;
(5), make cold-producing medium after the compressor work enter condenser by escape pipe and carry out condensation liquefaction, enter the first evaporimeter by the first capillary-compensated step-down again, then flow through in turn and arrange mutually the N evaporimeter of series connection, draw the lifting of the warm degree of depth by the evaporator series mode, to reach design conditions;
(6), flow through that cold-producing medium flows back to compressor by muffler behind the evaporimeter of end position.
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 the practical application and structure attribute, the concrete model that this factor of drawing the warm limit comprises that capillary matches, the quantity of parallel evaporator, the parameters such as the specification of every evaporimeter of affect.
In above-mentioned refrigeration plant in the How It Works of evaporimeter connected system structure, described initially drawing in the warm speed stage, liquid inlet electromagnetic valve is opened the N capillary that is communicated with assisted capillary, the second capillary and arranges in turn; The described later stage draws the warm degree of depth in the stage, and liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary that blocks assisted capillary, the second capillary and arrange in turn.
Compared with prior art, evaporimeter connected system structure and How It Works are rationally controlled the connection in series-parallel constructor of multi-section evaporimeter in this refrigeration plant in same refrigeration space, adopt the first warm speed of drawing that promotes in parallel, series connection promotes the substep function mode of drawing the warm degree of depth again, ensure thus to meet design conditions, accelerate simultaneously the warm speed of drawing of total system; Effectively raise the refrigerating capacity of refrigeration system, shortened the available machine time of compressor; Make again the increase of evaporimeter heat exchange efficiency greater than the increase of compressor power consumption, namely reduced the power consumption of compressor, reach the purpose of energy-saving and emission-reduction.
Description of drawings
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.
Among the 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.
The specific embodiment
Below be 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 embodiment.
Embodiment one
As shown in Figure 1, evaporimeter connected system structure comprises compressor 1, condenser 2, device for drying and filtering 3 some flow controllers and the some evaporimeters that forms the circulation serial connection in this refrigeration plant.
Wherein flow controller can adopt capillary, expansion valve etc. can realize the parts of throttling, the concrete capillary of using in the present embodiment.In same refrigeration space, use two evaporimeters in the present embodiment, i.e. called after the first evaporimeter 7 and the second evaporimeter 9, and the according to demand different settings of the large ting model of two evaporimeters; So corresponding two capillaries, i.e. called after the first capillary 5 and the second capillary 6 of using.
Distolateral the connecing in turn of the outlet of device for drying and filtering 3 established liquid inlet electromagnetic valve 4, one connects the first evaporimeter 7 by the first capillary 5 in a plurality of branches valve port of liquid inlet electromagnetic valve 4, 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 and the second evaporimeter 9, set out liquid electromagnetic valve 8 on this serial connection pipeline, another branch's valve port of liquid outlet electromagnetic valve 8 is by bye-pass and connect the second evaporimeter 9, finally gathers the muffler that connects compressor 1 by pipeline.
According to evaporimeter connected system structure in the above-mentioned refrigeration plant, its How It Works comprises following operation steps:
(1), starting stage of start operation, liquid inlet electromagnetic valve 4 is opened and is communicated with the first capillary 5, the second capillary 6, liquid outlet electromagnetic valve 8 is closed the pipeline that is connected in series between the first evaporimeter 7 and the second evaporimeter 9, opens and connect bye-pass;
(2), make cold-producing medium after compressor 1 acting enter condenser 2 by escape pipe and carry out condensation liquefaction, shunt again through the first capillary 5, the second capillary 6, be synchronous parallel connection flow through the first evaporimeter 7, the second evaporimeter 9, carry out at double sweat cooling efficient by two evaporimeter parallel waies, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3), the cold-producing medium in the first evaporimeter 7 is flowed through behind the bye-pass gathers with the cold-producing medium of the second evaporimeter 9, flows back to compressor 1 by muffler;
(4), when reaching the warm limit of drawing of two evaporimeter parallel waies, liquid inlet electromagnetic valve 4 is communicated with the first capillary 5, blocks the second capillary 6, liquid outlet electromagnetic valve 8 is opened the pipeline that is connected in series between the first evaporimeter 7 and the second evaporimeter 9, closes and connect bye-pass;
(5), make cold-producing medium after compressor 1 acting enter condenser 2 by escape pipe and carry out condensation liquefaction, enter the first evaporimeter 7 by the first capillary 5 reducing pressure by regulating flows again, second evaporimeter 9 of then flowing through in turn, draw the lifting of the warm degree of depth by two evaporator series modes, to reach design conditions;
(6), the cold-producing medium behind outflow 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 the practical application and structure attribute, specifically affects the capillary model that this factor of drawing the warm limit comprises apolegamy, the quantity of parallel evaporator, the parameters such as the specification of every evaporimeter.
Evaporimeter connected system structure can be used for two-bed system in this refrigeration plant, also can be used for the superposition type system.
Drawing the temperature initial stage, interoperation by some magnetic valves forms path in parallel, what use is multi-section evaporimeter refrigeration in parallel, effective heat exchange efficiency and the flow system flow of whole evaporimeter have been increased, specifically being equivalent to a plurality of refrigeration systems moves at the same time, thereby draw warm speed obviously to accelerate, the uniformity of the temperature inside the box obviously improves simultaneously; When drawing temperature after to a certain degree, switch to cooperate by some magnetic valves and form tandem paths, use be multi-section evaporator series refrigeration, and then system gets back to original design conditions, to reach the corresponding refrigeration degree of depth.
Embodiment two
As shown in Figure 2, present embodiment is basic identical with structure and the principle of embodiment one, and 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.The first capillary 5 is the capillary of concrete two kinds of different sizes with assisted capillary 10.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, i.e. input value situation configuration according to actual evaporator is communicated with the first capillary 5 or assisted capillary 10, and the make-break operation of assisted capillary 10 is equally by liquid inlet electromagnetic valve 4 controls.
Initially draw in the warm speed stage, liquid inlet electromagnetic valve 4 is opened and is communicated with assisted capillary 10, the second capillary 6; Later stage draws the warm degree of depth in the stage, 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 only is to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or replenish or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has more used compressor 1; Condenser 2; Device for drying and filtering 3; Liquid inlet electromagnetic valve 4; The first capillary 5; The second capillary 6; The first evaporimeter 7; Liquid outlet electromagnetic valve 8; The second evaporimeter 9; Assisted capillary 10 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present invention; They are construed to any additional restriction all is contrary with spirit of the present invention.
Claims (6)
1. evaporimeter connected system structure in the refrigeration plant, comprise the compressor that forms the circulation serial connection, condenser, some flow controllers and some evaporimeters, it is characterized in that, be connected the first evaporimeter by the first throttle device between described condenser and the some evaporimeters, the second flow controller connects the second evaporimeter, be arranged in order connection, and the place, feed liquor top of described some flow controllers arranges liquid inlet electromagnetic valve, described some evaporimeters are connected in series in turn, and set out liquid electromagnetic valve on the serial connection pipeline of described per two adjacent evaporimeters, branch's valve port of described liquid outlet electromagnetic valve is by bye-pass and connect and gather the connection above-mentioned compressor.
2. evaporimeter connected system structure in the refrigeration plant according to claim 1 is characterized in that, increases between described condenser and the first evaporimeter to be connected with assisting restriction choke, and the feed liquor top of described assisting restriction choke connects establishes above-mentioned liquid inlet electromagnetic valve.
3. evaporimeter connected system structure in the refrigeration plant according to claim 1 and 2 is characterized in that described flow controller is specially capillary.
4. evaporimeter connected system structure in the refrigeration plant according to claim 1 and 2 is characterized in that described flow controller is specially expansion valve.
5. the How It Works of evaporimeter connected system structure in the refrigeration plant is characterized in that, comprises following operation steps:
(1), starting stage of start operation, liquid inlet electromagnetic valve is opened the N capillary that is communicated with the first capillary, the second capillary and arranges in turn, liquid outlet electromagnetic valve is closed the serial connection pipeline between the adjacent evaporimeter, opens and connect bye-pass;
(2), make cold-producing medium after the compressor work enter condenser by escape pipe and carry out condensation liquefaction, shunt again through the first capillary, the second capillary and the N capillary arranged in turn, be the N evaporimeter that synchronous parallel connection is flowed through the first evaporimeter, the second evaporimeter and arranged in turn, carry out at double sweat cooling efficient by the evaporimeter parallel way, draw warm speed to accelerate at double, and the temperature inside the box uniformity improve;
(3), the cold-producing medium in each evaporimeter is flowed through to gather by muffler behind the bye-pass and is flowed back to compressor;
(4), when reaching the warm limit of drawing of evaporimeter parallel way, liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary that blocks the second capillary and arrange in turn, liquid outlet electromagnetic valve is opened the serial connection pipeline between the adjacent evaporimeter, closes and connect bye-pass;
(5), make cold-producing medium after the compressor work enter condenser by escape pipe and carry out condensation liquefaction, enter the first evaporimeter by the first capillary-compensated step-down again, then flow through in turn and arrange mutually the N evaporimeter of series connection, draw the lifting of the warm degree of depth by the evaporator series mode, to reach design conditions;
(6), flow through that cold-producing medium flows back to compressor by muffler behind the evaporimeter of end position.
6. evaporimeter connected system structure in the refrigeration plant according to claim 5 is characterized in that, described initially drawing in the warm speed stage, and liquid inlet electromagnetic valve is opened the N capillary that is communicated with assisted capillary, the second capillary and arranges in turn; The described later stage draws the warm degree of depth in the stage, and liquid inlet electromagnetic valve is communicated with the first capillary, the N capillary that blocks assisted capillary, the second capillary and arrange in turn.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| CN110953740A (en) * | 2019-12-23 | 2020-04-03 | 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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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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