CN2814259Y - Multicompressor helica-lobe flooded water cooling machine set - Google Patents
Multicompressor helica-lobe flooded water cooling machine set Download PDFInfo
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- CN2814259Y CN2814259Y CN 200520055921 CN200520055921U CN2814259Y CN 2814259 Y CN2814259 Y CN 2814259Y CN 200520055921 CN200520055921 CN 200520055921 CN 200520055921 U CN200520055921 U CN 200520055921U CN 2814259 Y CN2814259 Y CN 2814259Y
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- compressor
- pipeline
- oil
- water chilling
- chilling units
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Abstract
The utility model provides an efficient flooded type screw water chiller with multiple compressors, which comprises compressors, an oil-gas separator, a condenser, a restricting element and an evaporator which are connected orderly to form a loop. The utility model is characterized in that the compressors are connected with each other in parallel. The utility model has the obvious characteristics that a plurality of refrigeration systems share one condenser and one evaporator, which can enhance the performance of the water chiller and especially obviously enhance the performance of the water chiller when only one compressor is started.
Description
Technical field
The utility model belongs to the refrigeration and air-conditioning technical field, particularly large-scale screw flooded handpiece Water Chilling Units.
Background technology
At present, the exploitation of screw flooded handpiece Water Chilling Units more and more becomes the focus of domestic large-scale handpiece Water Chilling Units technical field, it is special after country has announced the energy-conservation evaluation criterion of new handpiece Water Chilling Units, the full-liquid type handpiece Water Chilling Units be because can significantly improve the Energy Efficiency Ratio of unit, becomes each large-scale central air-conditioning manufacturing firm competition focal point especially.In the screw flooded handpiece Water Chilling Units of existing multi-compressor, each compressor has evaporimeter and condenser separately, and each self-forming difference is system independently, and each system's mutually noninterfere is independent of each other.The deficiency of this system is that the Energy Efficiency Ratio of sub-load is lower.Data shows a handpiece Water Chilling Units in actual moving process according to statistics, and it all is in operation at part load that the time more than 90% is arranged, so the Energy Efficiency Ratio of this system is significant for practice; On the other hand, the materials being fabricated consumption of a plurality of independently systems is big, and complex manufacturing technology is from having increased manufacturing cost.
Summary of the invention
The purpose of this utility model just is, solves the deficiencies in the prior art, and a kind of screw flooded handpiece Water Chilling Units of multi-compressor of efficient effect is provided.
The purpose of this utility model is achieved by the following technical solution, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor, comprise the compressor, gs-oil separator, condenser, restricting element, the evaporimeter that connect and form the loop successively, it is characterized in that, parallel with one another between the described multiple compressors.
Be provided with the compressor oil balance pipe between the described multiple compressors.
For independently many respectively refrigeration systems in the screw flooded handpiece Water Chilling Units of existing multi-compressor, the utility model distinguishing feature is the shared condenser of a plurality of refrigeration systems and an evaporimeter, the advantage of the screw flooded handpiece Water Chilling Units of this multi-compressor is the Energy Efficiency Ratio height of sub-load, because when sub-load, evaporimeter, the heat exchange area of condenser is equivalent to many times (multiple is identical with the number of compressor) of a plurality of autonomous system heat exchange areas all the time, being equivalent to has increased heat exchange area, and increased evaporimeter, the heat exchange area of condenser can improve the performance of unit; Particularly when having only a compressor to open, more obvious to the raising of unit performance.
Description of drawings
Fig. 1 is the connection operation schematic diagram of unit embodiment one described in the utility model.
Fig. 2 is the connection operation schematic diagram of unit embodiment two described in the utility model.
Fig. 3 is the connection operation schematic diagram of unit embodiment three described in the utility model
Fig. 4 is the connection operation schematic diagram of unit embodiment four described in the utility model
The specific embodiment
Embodiment one
As shown in Figure 1, the connection for unit embodiment one described in the utility model moves schematic diagram.The screw flooded handpiece Water Chilling Units of a kind of multi-compressor, comprise the compressor 1,1 ', 1 that connects and form the loop successively "; gs-oil separator 3 (generally being called for short oil content), condenser 4, restricting element 6,7, evaporimeter 8, this loop is the major loop of handpiece Water Chilling Units, represents with solid line in the drawings.
Three compressors 1,1 ', 1 " parallel with one another, have common blast pipe and air inlet pipe, between three compressors, be provided with compressor oil balance pipe 12 (representing with chain-dotted line in the drawings).
As figure, at described compressor 1,1 ', 1 " and described gs-oil separator 3 between except from described compressor 1,1 ', 1 " to the backbone of described gs-oil separator 3, also be provided with one and be drawn out to described compressor 1,1 ', 1 from described gs-oil separator 3 " pipeline; represent with double dot dash line that in the drawings we are commonly called as secondary oil content oil return loop; In described secondary oil content oil return loop, generally be provided with first filter 2 and be used for filtering the oil of separating from described gs-oil separator 3, " in order to avoid impurity enters compressor 1,1 ', 1.Like this at described compressor 1,1 ', 1 " and described gs-oil separator 3 between also formed a little circulation; it can send back to the oil that described gs-oil separator 3 is separated in the described compressor 1, utilizes described oil balance tube 12 will come to get back to the oil of compressor 1 and attract from described evaporimeter 8 and the oil that goes out to get back to compressor 1 equilibrates to each compressor in parallel 1,1 ', 1 through described injector 11 through first filter 2 from described gs-oil separator 3 is isolated again " in go.
In order to solve the problem of described compressor oil return difficulty, also comprise injection oil return loop in the described unit, dot in the drawings.Described injection oil return loop comprises a pipeline and a pipeline of drawing from described evaporimeter 8 of drawing from described condenser 4, article two, described pipeline is connected in described compressor 1 by pipeline after being summarized in injector 11 again, equilibrates to each compressor in parallel 1,1 ', 1 by described oil balance tube again " in go.The pipeline of drawing, be provided with a magnetic valve 10, the pipeline of drawing, be provided with second filter 9 from described evaporimeter 8 from described condenser 4.Described magnetic valve 10 is intermittent work, in the utility model, when compressor needs oil return, open described magnetic valve 10, the highly pressurised liquid that comes out from described condenser passes through custom-designed described injector 11, the suction effect is drawn in generation, under powerful absorption affinity effect in the evaporimeter the higher liquid of oil concentration some drawn through second filter 9 and be drawn onto in the injector, after the highly pressurised liquid that produces injection mixes, get back to described compressor 1, equilibrate to each compressor in parallel 1 by described oil balance tube again, 1 '; 1 " in go, thereby guaranteed the oil return of system.
In the utility model, described condenser 4 and described restricting element 6,7 between, drawn the pipeline of two parallel connections from condenser 4, on a pipeline, be provided with device for drying and filtering 5, described device for drying and filtering 5 is intermittent work, promptly under general situation, the highly pressurised liquid from described condenser 4 to described restricting element 6,7 still passes through from an other pipeline.
The course of work of the screw flooded handpiece Water Chilling Units of described multi-compressor is: as shown in the figure, and the air current flow direction when arrow is represented handpiece Water Chilling Units work; In working order, from compressor 1,1 ', 1 " high temperature and high pressure gas that comes out flows through external gs-oil separator 3; carry out Oil-gas Separation, the oil of separating equilibrates to each compressor in parallel 1,1 ', 1 by described oil balance tube again through 2 times compressors 1 of described filter " in go.Gas after the separation enters condenser 4, in described condenser 4, be condensed into highly pressurised liquid, becoming low pressure liquid behind the restricting element of forming through two electric expansion valves in parallel with orifice plate 67 flows in the described evaporimeter 8, in described evaporimeter 8, cold-producing medium is evaporated, and the gas after the evaporation is inhaled into compressor 1.For the highly pressurised liquid drying that keeps coming out from described condenser 4,5 pairs of described highly pressurised liquids of intermittent unlatching device for drying and filtering carry out dry filter, enter restricting element again.Described magnetic valve 10 is intermittent work, when compressor needs oil return, open described magnetic valve 10, the highly pressurised liquid that comes out from described condenser passes through custom-designed described injector 11, the suction effect is drawn in generation, under powerful absorption affinity effect in the evaporimeter the higher liquid of oil concentration some drawn through second filter 9 and be drawn onto in the injector, after the highly pressurised liquid that produces injection mixes, get back to described compressor 1, equilibrate to each compressor in parallel 1,1 ', 1 by described oil balance tube again " in go, thereby guaranteed the oil return of system.
In the present embodiment, also can adopt two, four and more compressor parallel.
Embodiment two
As shown in Figure 2, the connection for unit embodiment two described in the utility model moves schematic diagram.The difference of present embodiment and embodiment one is, in the present embodiment, by described gs-oil separator 3 and respectively through first filter 2,2 ', 2 " compressor oil after overanxious gets back to the compressor 1,1 ', 1 of compressor parallel respectively " in; The compressor oil of returning by injection oil return loop is earlier by equilibrating to each compressor in parallel 1,1 ', 1 by described oil balance tube again behind the described compressor 1 " in go.
Embodiment three
As shown in Figure 3, the connection for unit embodiment three described in the utility model moves schematic diagram.The difference of present embodiment and embodiment one is, in the present embodiment, by described gs-oil separator 3 and respectively through first filter 2,2 ', 2 " compressor oil after overanxious gets back to the compressor 1,1 ', 1 of compressor parallel respectively " in; A part of in addition compressor oil is by compressor 1,1 ', 1 " separately injection oil return loop gets back to compressor 1,1 ', 1 respectively " in.The compressor oil of promptly returning is no longer earlier by equilibrating to each compressor in parallel 1,1 ', 1 by described oil balance tube again behind the described compressor 1 " in go; But the oil return loop branch by separately is clipped in each compressor and goes.
Embodiment four
As shown in Figure 4, the connection for unit embodiment four described in the utility model moves schematic diagram.The difference of present embodiment and embodiment one is that the injection oil return loop in the described unit of present embodiment dots in the drawings; Present embodiment adopts the injection power source of gases at high pressure as injector.Described injection oil return loop comprises a pipeline and a pipeline of drawing from described evaporimeter 8 of drawing from described gs-oil separator 3, article two, described pipeline is connected in described compressor 1 by pipeline after being summarized in injector 11 again, equilibrates to each compressor in parallel 1,1 ', 1 by described oil balance tube again " in go.
The pipeline of drawing, be provided with a magnetic valve 10, the pipeline of drawing, be provided with second filter 9 from described evaporimeter 8 from described gs-oil separator 3.When compressor needs oil return, open described magnetic valve 10, the gases at high pressure that come out from described gs-oil separator 3 pass through custom-designed described injector 11, the suction effect is drawn in generation, under powerful absorption affinity effect in the evaporimeter the higher liquid of oil concentration some drawn through second filter 9 and be drawn onto in the injector, after the gases at high pressure that produce injection mix, get back to described compressor 1, equilibrate to each compressor in parallel 1,1 ', 1 by described oil balance tube again " in go, thereby guaranteed the oil return of system.
Traditional a plurality of systems of unit of multi-compressor system are that respectively independently the mutually noninterfere of a plurality of systems is independent of each other, and separately evaporimeter and condenser are arranged; With respect to this difference independently for the multisystem, distinguishing feature of the present utility model is the shared condenser of a plurality of refrigeration systems and evaporimeter (as shown in the figure 1,2,3), and the advantage of this system is the Energy Efficiency Ratio height of sub-load.Because when sub-load, the heat exchange area of evaporimeter, condenser is equivalent to many times (multiple is identical with the number of compressor) of a plurality of autonomous system heat exchange areas all the time, to be equivalent to increased heat exchange area, and increased the heat exchange area of evaporimeter, condenser, can improve the performance of unit; Particularly when having only a compressor to open, more obvious to the raising of unit performance.MSDS shows a handpiece Water Chilling Units in actual moving process according to statistics, and it all is in operation at part load that the time more than 90% is arranged, so the energy-saving effect of native system is significant for practice; On the other hand, an integral body is made by a plurality of independently systems, can save materials being fabricated, reduce manufacture craft, thereby reduced manufacturing cost.
The utility model also has other distortion and change, for example, can only be orifice plate or electric expansion valve or common heating power expansion valve in the use of restricting element, and the combination of quantity also is varied etc.In the utility model, in the whole unit, can also install some ball valves, check valve for the convenience of overhauling or controlling, also can adopt low-pressure gas as injection power source of injector etc.Therefore, those skilled in the art to unsubstantiality that the utility model is done, conspicuous change or improve and all should belong to protection domain of the present utility model.
Claims (8)
1, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor comprises the compressor, gs-oil separator, condenser, restricting element, the evaporimeter that connect and form the loop successively, it is characterized in that, and is parallel with one another between the described multiple compressors.
2, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 1 is characterized in that, is provided with the compressor oil balance pipe between the described multiple compressors.
3, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 1 is characterized in that, described multiple compressors has compressor oil oil return loop respectively.
4, according to claim 1 or the screw flooded handpiece Water Chilling Units of 2 or 3 described a kind of multi-compressors, it is characterized in that the shared condenser of described multiple compressors and an evaporimeter.
5, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 4, it is characterized in that, described unit also comprises injection oil return loop, described injection oil return loop comprises a pipeline and a pipeline of drawing from described evaporimeter of drawing from described condenser, and two described pipelines are connected in described compressor by pipeline after being summarized in injector again.
6, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 5 is characterized in that, is provided with a magnetic valve the pipeline of drawing from described condenser, is provided with second filter the pipeline of drawing from described evaporimeter.
7, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 4, it is characterized in that, described unit also comprises injection oil return loop, described injection oil return loop comprises a pipeline and a pipeline of drawing from described evaporimeter of drawing from described gs-oil separator, and two described pipelines are connected in described compressor by pipeline after being summarized in injector again.
8, the screw flooded handpiece Water Chilling Units of a kind of multi-compressor according to claim 7 is characterized in that, is provided with a magnetic valve the pipeline of drawing from described gs-oil separator, is provided with second filter the pipeline of drawing from described evaporimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055921 CN2814259Y (en) | 2005-03-23 | 2005-03-23 | Multicompressor helica-lobe flooded water cooling machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055921 CN2814259Y (en) | 2005-03-23 | 2005-03-23 | Multicompressor helica-lobe flooded water cooling machine set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814259Y true CN2814259Y (en) | 2006-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055921 Expired - Lifetime CN2814259Y (en) | 2005-03-23 | 2005-03-23 | Multicompressor helica-lobe flooded water cooling machine set |
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| CN (1) | CN2814259Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563942A (en) * | 2011-12-08 | 2012-07-11 | 北方工业大学 | Heat pump unit with multiple parallel scroll compressors and trickle falling film evaporator |
| CN107910978A (en) * | 2017-12-25 | 2018-04-13 | 湖南同能机电科技有限公司 | A kind of double dynamical compressor and cooling-water machine system and cooling-water machine system control method |
-
2005
- 2005-03-23 CN CN 200520055921 patent/CN2814259Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563942A (en) * | 2011-12-08 | 2012-07-11 | 北方工业大学 | Heat pump unit with multiple parallel scroll compressors and trickle falling film evaporator |
| CN107910978A (en) * | 2017-12-25 | 2018-04-13 | 湖南同能机电科技有限公司 | A kind of double dynamical compressor and cooling-water machine system and cooling-water machine system control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150323 Granted publication date: 20060906 |