CN2807156Y - Flooded type screw water chiller with novel throttle element - Google Patents
Flooded type screw water chiller with novel throttle element Download PDFInfo
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- CN2807156Y CN2807156Y CN 200520055920 CN200520055920U CN2807156Y CN 2807156 Y CN2807156 Y CN 2807156Y CN 200520055920 CN200520055920 CN 200520055920 CN 200520055920 U CN200520055920 U CN 200520055920U CN 2807156 Y CN2807156 Y CN 2807156Y
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- expansion valve
- water chilling
- chilling units
- handpiece water
- throttling element
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Abstract
The utility model provides an economic and effective throttling control scheme for a flooded type water chiller, and relates to a flooded type screw water chiller with a novel throttling element, which comprises a compressor, an oil-gas separator, a condenser, throttling elements and an evaporator which are orderly connected to form a loop. The utility model is characterized in that the throttling elements are formed by connecting an orifice plate and an expansion valve in parallel. The orifice plate is used as a basic throttling element, and the expansion valve is used as an auxiliary throttling element. The utility model not only ensures the system to run under optimum conditions but also saves the cost of the throttling elements.
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.Existing screw flooded handpiece Water Chilling Units is in throttling control, useful orifice plate is as restricting element, also useful electric expansion valve is as restricting element, orifice plate is during as restricting element, because of the aperture size can not be regulated, the restriction characteristic of system can not remain at the best, and particularly the ability and the load of orifice plate do not match during fractional load; Utilize electric expansion valve as restricting element, because electric expansion valve is comparatively expensive, often requirement is better with a plurality of restriction characteristics of system that just can make in a system, and this can make the cost of restricting element higher.
Summary of the invention
The purpose of this utility model just is, solves the deficiencies in the prior art, for the full-liquid type handpiece Water Chilling Units provides a kind of more cost-effective throttling control scheme.
The purpose of this utility model is achieved by the following technical solution, a kind of screw flooded handpiece Water Chilling Units with novel throttling element, comprise the compressor, gs-oil separator, condenser, restricting element, the evaporimeter that connect and form the loop successively, it is characterized in that described restricting element is composed in parallel by orifice plate and expansion valve.
Especially, as the fundamental segment fluid element, expansion valve is as assistant throttle component with orifice plate.
Described expansion valve is an electric expansion valve.
Because the utility model has adopted orifice plate to add the throttling control scheme of electronics expansion valve, as the fundamental segment fluid element, electric expansion valve is as assistant throttle component with orifice plate; Orifice plate is during as restricting element, can not regulate because of the aperture size, the restriction characteristic of system can not remain at the best, and increases the correction of the electric expansion valve of a less ability as the orifice plate restriction characteristic, the system that both guaranteed operates in optimum state all the time, has also saved the cost of restricting element.
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 restriction characteristic figure that uses electric expansion valve or orifice plate separately.
Fig. 4 is the restriction characteristic figure of orifice plate after the correction of use electric expansion valve.
The specific embodiment
Embodiment one
As shown in Figure 1, the connection for unit embodiment described in the utility model moves schematic diagram.A kind of new screw full-liquid type handpiece Water Chilling Units, comprise the compressor 1, gs-oil separator 3 (generally being called for short oil content), condenser 4, restricting element 6,7, the evaporimeter 8 that connect and form the loop successively, this loop is the major loop of handpiece Water Chilling Units, represents with solid line in the drawings.
In the present embodiment, described restricting element is formed in parallel by described orifice plate 6 and two described electric expansion valves 7, in system's running, orifice plate is main throttle part, most of feed flow liquid passes through from orifice plate, electric expansion valve is a bypass, and as assistant throttle component, fraction feed flow liquid passes through from electric expansion valve.Orifice plate can not be regulated because of the aperture size during as restricting element, and the restriction characteristic of system can not remain at the best, and particularly the ability and the load of orifice plate do not match during fractional load; And increasing of the correction of the electric expansion valve of two less abilities as the orifice plate restriction characteristic, the system that both guaranteed operates in optimum state all the time, has also saved the cost of restricting element.
As shown in Figure 3, for using the restriction characteristic figure of electric expansion valve or orifice plate separately, as can be known from Figure, the throttling capacity of orifice plate and load do not match when having only fractional load, when load was percent 60 left and right sides, the phenomenon that seriously do not match of 35% left and right sides throttling capacity had appearred especially.
As shown in Figure 4, restriction characteristic figure for orifice plate after the correction of use electric expansion valve, after using the back electric expansion valve, the deficiency of orifice plate throttling has all obtained remedying, and reaches the effect as the electric expansion valve of electric expansion valve that uses a plurality of less abilities or single big ability.
Between described compressor 1 and described gs-oil separator 3 except from described compressor 1 to the backbone of described gs-oil separator 3, also be provided with a pipeline that is drawn out to described compressor 1 from described gs-oil separator 3, 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.Also formed a little circulation like this between described compressor 1 and described gs-oil separator 3, it can send back to the oil that described gs-oil separator 3 is separated in the described compressor 1.
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, and two described pipelines are connected in described compressor 1 by pipeline after being summarized in injector 11 again.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 custom-designed described injector 11 of highly pressurised liquid process from described condenser comes out produces the suction effect of drawing, 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, 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.
Air current flow direction when as shown in the figure, arrow is represented handpiece Water Chilling Units work; In working order, the high temperature and high pressure gas that comes out from compressor 1 flows through external gs-oil separator 3, carry out Oil-gas Separation, the oil of separating is through 2 times compressors 1 of described filter, and the gas after the separation enters condenser 4, is condensed into highly pressurised liquid in described condenser 4, 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, thereby guaranteed the oil return of system.
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 that the quantity of described electric expansion valve 7 also can have only one.
The utility model also has other distortion and change, and for example, described expansion valve can be common heating power expansion valve, and the combination of expansion valve quantity also is varied etc.Compressor can adopt the multi-compressor parallel connection; Also can utilize gases at high pressure or low-pressure gas as the injection power source, at this moment, corresponding adjustment should be done in injection oil return loop.In the utility model, in the whole unit, for the convenience of overhauling or controlling can also be installed some ball valves, check valve 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 (9)
1, a kind of screw flooded handpiece Water Chilling Units with novel throttling element, comprise the compressor, gs-oil separator, condenser, restricting element, the evaporimeter that connect and form the loop successively, it is characterized in that described restricting element is composed in parallel by orifice plate and expansion valve.
2, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 1 is characterized in that as the fundamental segment fluid element, expansion valve is as assistant throttle component with orifice plate for described restricting element.
3, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 1 and 2 is characterized in that described expansion valve is an electric expansion valve.
4, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 1 and 2 is characterized in that described expansion valve is a heating power expansion valve.
5, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 1 and 2 is characterized in that the number of described expansion valve is two.
6, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 1 and 2 is characterized in that the number of described expansion valve is one.
7, a kind of screw flooded handpiece Water Chilling Units according to claim 1 and 2 with novel throttling element, it is characterized in that, also comprise injection oil return loop in the described unit, 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 summarized in injector afterwards again by managing or be connected in described compressor.
8, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 7 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.
9, a kind of screw flooded handpiece Water Chilling Units with novel throttling element according to claim 8 is characterized in that described magnetic valve is intermittent work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055920 CN2807156Y (en) | 2005-03-23 | 2005-03-23 | Flooded type screw water chiller with novel throttle element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520055920 CN2807156Y (en) | 2005-03-23 | 2005-03-23 | Flooded type screw water chiller with novel throttle element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2807156Y true CN2807156Y (en) | 2006-08-16 |
Family
ID=36921456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520055920 Expired - Lifetime CN2807156Y (en) | 2005-03-23 | 2005-03-23 | Flooded type screw water chiller with novel throttle element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2807156Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163120A1 (en) * | 2011-05-30 | 2012-12-06 | 宁波奥克斯电气有限公司 | Refrigerating multi-connected central air conditioning device with a screw compressor |
| CN104037113A (en) * | 2013-03-04 | 2014-09-10 | 中微半导体设备(上海)有限公司 | Air supply apparatus for plasma processing cavity, and de-clamping method |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN114234496A (en) * | 2021-12-23 | 2022-03-25 | 恩德特机械（苏州）有限公司 | Energy-saving industrial cold and hot integrated water chilling unit |
-
2005
- 2005-03-23 CN CN 200520055920 patent/CN2807156Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012163120A1 (en) * | 2011-05-30 | 2012-12-06 | 宁波奥克斯电气有限公司 | Refrigerating multi-connected central air conditioning device with a screw compressor |
| CN104037113A (en) * | 2013-03-04 | 2014-09-10 | 中微半导体设备(上海)有限公司 | Air supply apparatus for plasma processing cavity, and de-clamping method |
| CN104037113B (en) * | 2013-03-04 | 2018-05-08 | 中微半导体设备(上海)有限公司 | The feeder and de-clamping method of plasma process chamber |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
| CN114234496A (en) * | 2021-12-23 | 2022-03-25 | 恩德特机械（苏州）有限公司 | Energy-saving industrial cold and hot integrated water chilling unit |
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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: 20060816 |