CN105423663A - Gas-liquid separator, refrigeration cycle device with same, and refrigeration system with same - Google Patents
Gas-liquid separator, refrigeration cycle device with same, and refrigeration system with same Download PDFInfo
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- CN105423663A CN105423663A CN201510931214.5A CN201510931214A CN105423663A CN 105423663 A CN105423663 A CN 105423663A CN 201510931214 A CN201510931214 A CN 201510931214A CN 105423663 A CN105423663 A CN 105423663A
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- liquid separator
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- escape pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a gas-liquid separator, a refrigeration cycle device with the same, and a refrigeration system with the same. The gas-liquid separator comprises a barrel body, a low-pressure intake pipe, a low-pressure exhaust pipe, and a high-pressure pipeline suitable for flowing of a refrigerant, wherein a separation space is defined in the barrel body; one end of the low-pressure intake pipe stretches into the separation space to input the refrigerant to be subjected to gas-liquid separation; the low-pressure exhaust pipe stretches into the separation space to exhaust the gas-state refrigerant in the separation space, and an oil return port is arranged in the part located on the lower part of the separation space, of the low-pressure exhaust pipe; and the high-pressure pipeline is provided with a heat exchange pipeline part located in the separation space to carry out heat exchange with the refrigerant in the separation space, and a first inlet-outlet port and a second inlet-outlet port which stretch out of the barrel body, and the heat exchange pipeline part is provided with a spiral pipe part. The gas-liquid separator disclosed by the invention plays the roles of a supercooler, a heat regenerator and gas-liquid separation simultaneously.
Description
Technical field
The present invention relates to refrigerating field, especially relate to a kind of gas-liquid separator and there is its freezing cycle device, refrigeration system.
Background technology
Existing air-conditioning vapour liquid separator is for realizing vapor-liquid separation, and mainly the unnecessary oil in compressor and refrigerant are stored, appropriate gaseous coolant and lubricating oil enter compressor and compresses.Under extreme operating condition, due to reasons such as temperature are low, the easy absorbing gas belt liquid of compressor, makes compressor occur the phenomenon of liquid hammer, causes the Performance And Reliability of compressor to reduce.And the fluid in vapour liquid separator comes from evaporimeter, the temperature of these fluids is lower, part cold cannot be utilized, cause waste.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.
For this reason, the present invention proposes a kind of gas-liquid separator, serves the effect of subcooler, regenerator and gas-liquid separation simultaneously.
The present invention also proposes a kind of freezing cycle device with above-mentioned gas-liquid separator.
The present invention also proposes a kind of refrigeration system with above-mentioned gas-liquid separator.
According to the gas-liquid separator of the embodiment of the present invention, comprising: cylindrical shell, in described cylindrical shell, limit separated space; Low-pressure inlet pipe, one end of described low-pressure inlet pipe extend in described separated space to enter the refrigerant treating gas-liquid separation; Low pressure escape pipe, described low pressure escape pipe extend into discharge the gaseous coolant in described separated space in described separated space, and the part being positioned at described separated space bottom of described low pressure escape pipe is provided with oil return opening; Be suitable for the pressure piping of circulation refrigerant, described pressure piping has and is positioned at described separated space to carry out the heat exchange pipeline part of heat exchange with the refrigerant of described separated space, described pressure piping has first import and export and second of stretching out described cylindrical shell and imports and exports, and described heat exchange pipeline part has helix tube portion.
According to the gas-liquid separator of the embodiment of the present invention, by being provided with pressure piping, refrigerant in pressure piping and the refrigerant in separated space carry out heat exchange, thus make gas-liquid separator serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of freezing cycle device, thus improve the refrigerating efficiency of compressor, improve the COP of freezing cycle device.
In some embodiments of the invention, bolster is provided with in described low-pressure inlet pipe.
Particularly, a part of tube wall of described low-pressure inlet pipe bends inwards to limit described bolster after being separated with all the other tube walls.
In some embodiments of the invention, described low pressure escape pipe be positioned at described separated space and the part of the outlet side of contiguous described low pressure escape pipe is provided with return-air hole.
Alternatively, described helix tube portion in the vertical direction extends spirally or described helix tube portion extends spirally in the horizontal direction.
Alternatively, described helix tube portion is an annular spiral element.
In some embodiments of the invention, gas-liquid separator also comprises filter, and described filter is located at described oil return opening place.
In some embodiments of the invention, in described heat exchange pipeline part, overcoat has heat exchange fin.
In some embodiments of the invention, the bottom of described low-pressure inlet pipe extends downward beyond the inlet end of described low pressure escape pipe.
In some embodiments of the invention, the line of centres of the outlet side of described low pressure escape pipe and the inlet end of described low pressure escape pipe and, angle between the outlet side of described low pressure escape pipe and the line of centres of described low-pressure inlet pipe is A, described A > 0.
According to the freezing cycle device of the embodiment of the present invention, comprising: compressor, described compressor has exhaust outlet and gas returning port; Commutation assembly, described commutation assembly comprises the first valve port to the 4th valve port, described first valve port is communicated with one of them in the 3rd valve port with the second valve port, and described 4th valve port and described second valve port are communicated with another in described 3rd valve port, and described first valve port is connected with described exhaust outlet; Outdoor heat exchanger and indoor heat exchanger, the two ends of described outdoor heat exchanger are connected with the first end of first throttle device with described second valve port respectively, and the first end of described indoor heat exchanger is connected with described 3rd valve port; Gas-liquid separator according to the above embodiment of the present invention, described first of described pressure piping is imported and exported and is connected with the second end of described first throttle device, described second of described pressure piping is imported and exported and is connected with the second end of described indoor heat exchanger, the upper end of described low-pressure inlet pipe is connected with described 4th valve port, and the outlet side of described low pressure escape pipe is connected with described gas returning port.
According to the freezing cycle device of the embodiment of the present invention, by being provided with gas-liquid separator, refrigerant in pressure piping and the refrigerant in separated space carry out heat exchange, thus make gas-liquid separator serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of freezing cycle device, thus improve the refrigerating efficiency of compressor, improve the COP of freezing cycle device.
Further, freezing cycle device also comprises auxiliary stream, and described auxiliary stream is connected with the outlet side of described pressure piping with described low pressure escape pipe respectively, and described auxiliary stream is in series with the second throttling arrangement and control valve.
According to the refrigeration system of the embodiment of the present invention, comprising: compressor, described compressor has exhaust outlet and gas returning port; Outdoor heat exchanger, the two ends of described outdoor heat exchanger are connected with the first end of described exhaust outlet with first throttle device respectively; Indoor heat exchanger and gas-liquid separator according to the above embodiment of the present invention, described first of described pressure piping is imported and exported and is connected with the second end of described first throttle device, described second of described pressure piping is imported and exported and is connected with the first end of described indoor heat exchanger, the upper end of described low-pressure inlet pipe is connected with the second end of described indoor heat exchanger, and the outlet side of described low pressure escape pipe is connected with described gas returning port.
According to the refrigeration system of the embodiment of the present invention, by being provided with gas-liquid separator, refrigerant in pressure piping and the refrigerant in separated space carry out heat exchange, thus make gas-liquid separator serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of refrigeration system, thus improve the refrigerating efficiency of compressor, improve the COP of refrigeration system.
Further, refrigeration system also comprises auxiliary stream, and described auxiliary stream is connected with the outlet side of described pressure piping with described low pressure escape pipe respectively, and described auxiliary stream is in series with the second throttling arrangement and control valve.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of gas-liquid separator according to an embodiment of the invention;
Fig. 2 is the schematic diagram of gas-liquid separator in accordance with another embodiment of the present invention;
Fig. 3 is the schematic diagram of the gas-liquid separator according to another embodiment of the present invention;
The assembling schematic diagram that Fig. 4 is the pressure piping in the gas-liquid separator shown in Fig. 3 and cylindrical shell;
Fig. 5 is the schematic diagram of the gas-liquid separator according to another embodiment of the present invention;
Fig. 6 is the schematic diagram of the spiral element according to the present invention's five examples;
Fig. 7 is the profile of the gas-liquid separator according to the embodiment of the present invention;
Fig. 8 is the top view of the gas-liquid separator according to the embodiment of the present invention;
Fig. 9 is the schematic diagram of the low-pressure inlet pipe according to the embodiment of the present invention;
Figure 10 is the sectional view of the low-pressure inlet pipe shown in Fig. 9;
Figure 11 is the profile of the low pressure escape pipe according to the embodiment of the present invention;
Figure 12 is the schematic diagram of the freezing cycle device according to the embodiment of the present invention;
Figure 13 is the schematic diagram of the refrigeration system according to the embodiment of the present invention.
Reference numeral:
Gas-liquid separator 100,
Cylindrical shell 1, separated space 10,
Low-pressure inlet pipe 2, bolster 20, liquid outlet 21,
Low pressure escape pipe 3, oil return opening 30, return-air hole 31, inlet end 32, outlet side 33,
Pressure piping 4, heat exchange pipeline part 40, second import and export 41, first import and export 42, helix tube portion 43,
Filter 5,
Support 7,
Freezing cycle device 1000, refrigeration system 2000, compressor 200, exhaust outlet a, gas returning port b, commutation assembly 300, first valve port c, the second valve port d, the 3rd valve port e, the 4th valve port f, outdoor heat exchanger 400, indoor heat exchanger 500, first throttle device 600, second throttling arrangement 700, control valve 800, auxiliary stream 900.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
The gas-liquid separator 100 according to the embodiment of the present invention is described in detail below with reference to Fig. 1-Figure 12, gas-liquid separator 100 can be applied in freezing cycle device 1000 or refrigeration system 2000, freezing cycle device 1000 has refrigeration mode and heating mode, and refrigeration system 2000 has refrigeration mode.For the ease of being described the operation principle of gas-liquid separator 100, in the following description gas-liquid separator 100 is attached in freezing cycle device 1000 as example is described.
Freezing cycle device 1000 comprises compressor 200, outdoor heat exchanger 400, indoor heat exchanger 500, element such as commutation assembly 300 and first throttle device 600 etc., compressor 200 has exhaust outlet a and gas returning port b, commutation assembly 300 has the first valve port c to the 4th valve port f, first valve port c is connected with exhaust outlet a, second valve port d is connected with the first end of outdoor heat exchanger 400,3rd valve port e is connected with the first end of indoor heat exchanger 500, and the second end of outdoor heat exchanger 400 is connected with the first end of first throttle device 600.When freezing cycle device 1000 freezes, the first valve port c is communicated with the second valve port d and the 3rd valve port e is communicated with the 4th valve port f.When freezing cycle device 1000 heats, the first valve port c is communicated with the 3rd valve port e and the second valve port d is communicated with the 4th valve port f.
As Figure 1-Figure 5, according to the gas-liquid separator 100 of the embodiment of the present invention, comprising: cylindrical shell 1, low-pressure inlet pipe 2, low pressure escape pipe 3 and be suitable for the pressure piping 4 of refrigerant of circulating.Wherein, separated space 10 is limited in cylindrical shell 1, one end of low-pressure inlet pipe 2 extend in separated space 10 to enter the refrigerant treating gas-liquid separation, refrigerant is drained in separated space 10 from low-pressure inlet pipe 2, and the refrigerant be drained in separated space 10 carries out gas-liquid separation to isolate gaseous coolant and liquid refrigerants.In the example of Fig. 1-Fig. 3, Fig. 5, Fig. 7 and Fig. 8, low-pressure inlet pipe 2 extend in separated space 10 downwards from the top of cylindrical shell 1, but be understandable that, low-pressure inlet pipe 2 from the sidewall slope of cylindrical shell 1 or flatly can also extend in separated space 10.
Low pressure escape pipe 3 extend into discharge the gaseous coolant in separated space 10 in separated space 10, and the part being positioned at separated space 10 bottom of low pressure escape pipe 3 is provided with oil return opening 30.That is, low pressure escape pipe 3 has inlet end 32 and outlet side 33, and the inlet end 32 of low pressure escape pipe 3 is positioned at separated space 10, and the outlet side 33 of low pressure escape pipe 3 is positioned at outside cylindrical shell 1, and a part for low pressure escape pipe 3 is positioned at the bottom of separated space 10.Because gaseous coolant is generally positioned at the top of separated space 10, therefore the inlet end 32 of low pressure escape pipe 3 is preferably placed at the top of separated space 10.
Pressure piping 4 has and is positioned at separated space 10 to carry out the heat exchange pipeline part 40 of heat exchange with the refrigerant of separated space 10, and pressure piping 4 has and stretches out first of cylindrical shell 1 and import and export 42 and second and import and export 41.In other words, pressure piping 4 first extend in separated space 10 from cylindrical shell 1, and pressure piping 4 stretches out cylindrical shell 1 more afterwards, and entering into refrigerant in pressure piping 4 with pressure piping 4 is that refrigerant in flow path and separated space 10 carries out heat exchange.
Heat exchange pipeline part 40 has helix tube portion 43, and that is, the part being positioned at separated space 10 of pressure piping 4 is formed as helical structure to limit helix tube portion 43.Thus by arranging helix tube portion 43 in heat exchange pipeline part 40, the circulation path of refrigerant in pressure piping 4 can be increased, extend heat-exchange time, improve heat transfer effect.
Be understandable that, the shape in helix tube portion 43 can be various, can limit according to actual conditions, and following several concrete example is only exemplary illustration.In the concrete example of Fig. 1, helix tube portion 43 extends spirally in the horizontal direction, that is, and the helix horizontal-extending in helix tube portion 43.In the concrete example of Fig. 2, helix tube portion 43 in the vertical direction extends spirally, and namely the helix in helix tube portion 43 vertically extends.In other words, in the concrete example shown in Fig. 1 and Fig. 2, helix tube portion 43 comprises multiple spiral element.Preferably, the shape of multiple spiral element can be identical.In the concrete example of Fig. 3-Fig. 5, helix tube portion 43 is an annular spiral element.
It will also be appreciated that, the shape of spiral element can be varied, the Long Circle (as Suo Shi (e) in Fig. 3 and Fig. 4, Fig. 6) that such as spiral element can be formed as vertically placing, spiral element also can be formed as the Long Circle (as shown in Figure 5) of horizontal positioned, or can also be several difform spiral element shown in Fig. 6.In Fig. 6 shown in (f) is the spiral element of up-narrow and down-wide shape; The spiral element of narrow wide shape under being shown in (g) in Fig. 6; Spiral element in Fig. 6 shown in (h) has two parallel straightways and the segmental arc being connected two straightways, and the arc section that each segmental arc is not waited by two radiuses forms; The shape of the spiral element in Fig. 6 shown in (u) is irregularly shaped, and the radius of the multiple segmental arcs in the spiral element in Fig. 6 shown in (u) is all different, i.e. R1 ≠ R2 ≠ R3 ≠ R4.
Particularly, connector can be provided with to be fixed location to low pressure escape pipe 3 and pressure piping 4 in cylindrical shell 1, local welding can be carried out between low pressure escape pipe 3 and pressure piping 4 both to be fixed.More specifically, the caliber of pressure piping 4 can be less than the caliber of low pressure escape pipe 3, and the caliber of pressure piping 4 can be less than the caliber of low-pressure inlet pipe 2.
It should be noted that, " high pressure " and " low pressure " in description of the invention is comparatively speaking, only represent that the pressure of the refrigerant entered in pressure piping 4 is greater than the pressure of the refrigerant in low-pressure inlet pipe 2 and low pressure escape pipe 3, and do not represent concrete force value.
When gas-liquid separator 100 is applied to freezing cycle device 1000, as shown in figure 12, first of pressure piping 4 is imported and exported 42 and is connected with the second end of first throttle device 600, second of pressure piping 4 is imported and exported 41 and is connected with the second end of indoor heat exchanger 500, low-pressure inlet pipe 2 is connected with the 4th valve port f, and low pressure escape pipe 3 is connected with gas returning port b.
During freezing cycle device 1000 refrigerating operaton, the refrigerant of the HTHP of discharging from the exhaust outlet a of compressor 200 is through outdoor heat exchanger 400 condensation, the refrigerant that heat exchanger 400 is discharged outdoor enters into reducing pressure by regulating flow in first throttle device 600, the refrigerant flowed out from first throttle device 600 flow in pressure piping 4, refrigerant in pressure piping 4 and the interior refrigerant stored of separated space 10 carry out heat exchange, refrigerant in pressure piping 4 is cooled further, improve the degree of superheat of the refrigerant stored in separated space 10, the refrigerant of the storage in gas-liquid separator 100 is by heating and gasifying.Refrigerant in pressure piping 4 after heat exchange is discharged to indoor heat exchanger 500 from the second import and export 41 and carries out heat exchange, the refrigerant of heat exchanger 500 discharge is discharged to the 3rd valve port e indoor, the refrigerant of discharging from the 4th valve port f is afterwards drained in separated space 10 by low-pressure inlet pipe 2, the refrigerant be drained in separated space 10 carries out gas-liquid separation, liquid refrigerants is stored in separated space 10, and gaseous coolant is discharged to gas returning port b to get back in compressor 200 from low pressure escape pipe 3.
During freezing cycle device 1000 heating operation, the refrigerant of discharging from the exhaust outlet a of compressor 200 is drained into indoor heat exchanger 500 and carries out condensation, the refrigerant that heat exchanger 500 is discharged indoor is imported and exported 41 by second and is entered in pressure piping 4, refrigerant in pressure piping 4 and the interior refrigerant stored of separated space 10 carry out heat exchange, refrigerant in pressure piping 4 is cooled further, be drained in outdoor heat exchanger 400 after the reducing pressure by regulating flow of first throttle device 600 from the refrigerant of pressure piping 4 discharge and carry out evaporation and heat-exchange, the refrigerant of heat exchanger 400 discharge is outdoor discharged to the second valve port d, the refrigerant of discharging from the 4th valve port f is afterwards drained in separated space 10 by low-pressure inlet pipe 2, the refrigerant be drained in separated space 10 carries out gas-liquid separation, liquid refrigerants is stored in separated space 10, gaseous coolant is discharged to gas returning port b to get back in compressor 200 from low pressure escape pipe 3.
No matter freezing cycle device 1000 freezes or heats, because refrigerant can carry a part of lubricating oil in the process of freezing cycle device 1000 Inner eycle, therefore be mixed with lubricating oil in the liquid refrigerants in separated space 10, the lubricating oil in separated space 10 can enter in low pressure escape pipe 3 and by gaseous coolant through oil return opening 30 and be carried to gas returning port b to get back in compressor 200.
It can thus be appreciated that, no matter freezing cycle device 1000 freezes or heats, refrigerant in pressure piping 4 all carries out heat exchange with the interior refrigerant stored of separated space 10, improve the degree of superheat of the refrigerant stored in separated space 10, make the refrigerant stored in separated space 10 by heating and gasifying, and then improve the mass dryness fraction of the refrigerant entering into compressor 200, effectively reduce the liquid hammer risk that compressor 200 absorbing gas belt liquid causes, therefore, for the refrigerant stored in gas-liquid separator 100
Gas-liquid separator 100 serves the function of regenerator, adds the degree of superheat of freezing cycle device 1000.
Refrigerant is further cooled in pressure piping 4, after improve the degree of supercooling of refrigerant, then enters into next element and carries out heat exchange.Therefore, for the refrigerant that outdoor heat exchanger 400 or indoor heat exchanger 500 are discharged, gas-liquid separator 100 serves the effect of subcooler, adds the degree of supercooling of freezing cycle device 1000.
Known in sum, gas-liquid separator 100 serves the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of freezing cycle device 1000, thus improve the refrigerating efficiency of compressor 200, improve the COP (CoefficientofPerformance of freezing cycle device 1000, heating energy efficiency ratio, the conversion ratio namely between energy and heat).
According to the gas-liquid separator 100 of the embodiment of the present invention, by being provided with pressure piping 4, refrigerant in refrigerant in pressure piping 4 and separated space 10 carries out heat exchange, thus make gas-liquid separator 100 serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of freezing cycle device 1000, thus improve the refrigerating efficiency of compressor 200, improve the COP of freezing cycle device 1000.
In further embodiment of the present invention, in heat exchange pipeline part 40, overcoat has heat exchange fin.Thus heat exchange fin can increase the heat exchange area of heat exchange pipeline part 40, the refrigerant in raising heat exchange pipeline part 40 and the heat exchange efficiency between the interior refrigerant stored of separated space 10, improve heat transfer effect.Particularly, heat exchange fin can be multiple, is enclosed within heat exchange pipeline part 40 outside each heat exchange fin, can adopt and be fixed in any way between heat exchange fin and heat exchange pipeline part 40.
The gas-liquid separator 100 according to the specific embodiment of the invention is described in detail below with reference to Fig. 1-Figure 11.
As shown in Figure 1, comprise cylindrical shell 1, low-pressure inlet pipe 2, low pressure escape pipe 3 according to the gas-liquid separator 100 of the embodiment of the present invention and be suitable for the pressure piping 4 of refrigerant of circulating.Separated space 10 is limited in cylindrical shell 1.
The lower end of low-pressure inlet pipe 2 extend in separated space 10, and the upper end of low-pressure inlet pipe 2 is positioned at outside cylindrical shell 1.In order to avoid flinging the bottom of cylindrical shell 1 from low-pressure inlet pipe 2 refrigerant be drained in cylindrical shell 1, bolster 20 is provided with in low-pressure inlet pipe 2, bolster 20 can play the effect of the flow velocity of buffering refrigerant, and the refrigerant entered in low-pressure inlet pipe 2 enters in cylindrical shell 1 after the buffering of bolster 20.
As Fig. 7, shown in Fig. 9 and Figure 10, bolster 20 is positioned at cylindrical shell 1, bend inwards to limit bolster 20 after a part of tube wall of low-pressure inlet pipe 2 is separated with all the other tube walls, that is, bolster 20 is bent inwards by a part of tube wall of low-pressure inlet pipe 2 and limits, because this section tubular wall and all the other tube walls of limiting the low-pressure inlet pipe 2 of bolster 20 are separated, the perisporium of therefore low-pressure inlet pipe 2 limits liquid outlet 21, the most of refrigerant entering into low-pressure inlet pipe 2 is drained in separated space 10 from liquid outlet 21 after the process flowed downward is buffered part 20 backstop.It is appreciated of course that, the structure of bolster 20 is not limited thereto, such as bolster 20 can also for the projection on multiple internal perisporium being located at low-pressure inlet pipe 2, and multiple projection is spaced apart on the length direction of low-pressure inlet pipe 2, as long as bolster 20 can play the flow velocity of buffering refrigerant.
Low pressure escape pipe 3 is formed as " U " shape substantially, low pressure escape pipe 3 first to extend into downwards in separated space 10 and extends downward the bottom of separated space 10, low pressure escape pipe 3 upwards bends the top extending to separated space 10 afterwards, the end being positioned at the low pressure escape pipe 3 on the top of separated space 10 is inlet end 32, and the end being positioned at the low pressure escape pipe 3 outside cylindrical shell 1 is outlet side 33.
The bending part place being positioned at separated space 10 of low pressure escape pipe 3 is provided with oil return opening 30, and the size of oil return opening 30 can be arranged according to actual conditions, and such as shown in figure 11, the diameter of oil return opening 30 is the span of d, d is 0.5mm-5mm.
In order to prevent impurity from entering in low pressure escape pipe 3 by oil return opening 30, as seen in figs. 7 and 11, gas-liquid separator 100 also comprises filter 5, and filter 5 is located at oil return opening 30 place.As shown in figure 11, filter 5 can be screen pack, and screen pack 5 is located on low pressure escape pipe 3 by support 7.It is appreciated of course that filter 5 can also be formed as other filtrations.
As shown in Figure 7, the distance between the center line of the base section of low pressure escape pipe 3 and the diapire of separated space 10 is the span of B, distance B can be 5mm-50mm.As shown in Figure 7, the bottom of low-pressure inlet pipe 2 extends downward beyond the inlet end 32 of low pressure escape pipe 3.Thus the refrigerant entered in cylindrical shell 1 from low-pressure inlet pipe 2 can be avoided directly to be drained in low pressure escape pipe 3.As shown in Figure 7, the distance between the bottom face of low-pressure inlet pipe 2 and the air inlet end face of low pressure escape pipe 3 is H, distance H > 0.
As shown in Figure 7, low pressure escape pipe 3 be positioned at separated space 10 and the part of the outlet side 33 of contiguous low pressure escape pipe 3 is provided with return-air hole 31, that is, return-air hole 31 is located on low pressure escape pipe 3, return-air hole 31 is positioned at separated space 10, the outlet side 33 of the contiguous low pressure escape pipe 3 of return-air hole 31 is arranged, gaseous coolant in separated space 10 can enter in low pressure escape pipe 3 by return-air hole 31, namely the gaseous coolant in separated space 10 can enter in low pressure escape pipe 3 by return-air hole 31 and inlet end 32, thus the gas output of low pressure escape pipe 3 can be increased.Be understandable that, the quantity of return-air hole 31, the shape and size of each return-air hole 31 can set according to the actual requirements.
As shown in Figure 8, the line of centres L1 of the outlet side 33 of low pressure escape pipe 3 and the inlet end 32 of low pressure escape pipe 3 and, angle between the outlet side 33 of low pressure escape pipe 3 and the line of centres L2 of low-pressure inlet pipe 2 is A, described A > 0.That is, line of centres L1 is through the end face center of the end face center of the outlet side 33 of low pressure escape pipe 3 and the inlet end 32 of low pressure escape pipe 3, and line of centres L2 is through the center of the end face center of the outlet side 33 of low pressure escape pipe 3 and the top end face of low-pressure inlet pipe 2.In brief, formed by two mouths of pipe of low pressure escape pipe 3 between straight line and low-pressure inlet pipe 2 at an angle.
As shown in Figure 1, the heat exchange pipeline part 40 of pressure piping 4 has the helix tube portion 43 extended spirally in the horizontal direction.As shown in Figure 2, the heat exchange pipeline part 40 of pressure piping 4 has the helix tube portion 43 that in the vertical direction extends spirally.As shown in Figure 3-Figure 5, pressure piping 4 has an annular spiral element.Wherein pressure piping 4 can be bent by a pipeline and limit.
Below with reference to Figure 12, the freezing cycle device 1000 according to the embodiment of the present invention is described.
As shown in figure 12, according to the freezing cycle device 1000 of the embodiment of the present invention, comprise: compressor 200, outdoor heat exchanger 400, indoor heat exchanger 500, commutation assembly 300, first throttle device 600 and gas-liquid separator 100, compressor 200 has exhaust outlet a and gas returning port b, commutation assembly 300 has the first valve port c to the 4th valve port f, first valve port c is connected with exhaust outlet a, second valve port d is connected with the first end of outdoor heat exchanger 400, 3rd valve port e is connected with the first end of indoor heat exchanger 500, second end of outdoor heat exchanger 400 is connected with the first end of first throttle device 600.When freezing cycle device 1000 freezes, the first valve port c is communicated with the second valve port d and the 3rd valve port e is communicated with the 4th valve port f.When freezing cycle device 1000 heats, the first valve port c is communicated with the 3rd valve port e and the second valve port d is communicated with the 4th valve port f.
Preferably, commutation assembly 300 be cross valve, it is appreciated of course that the assembly 300 that commutates can also be formed as other structures, can realize commutating as long as have the first valve port c to the 4th valve port f.
First of pressure piping 4 is imported and exported 42 and is connected with the second end of first throttle device 600, second of pressure piping 4 is imported and exported 41 and is connected with the second end of indoor heat exchanger 500, the upper end of low-pressure inlet pipe 2 is connected with the 4th valve port f, and the outlet side 33 of low pressure escape pipe 3 is connected with gas returning port b.Alternatively, first throttle device 600 is the restricting element such as capillary or electric expansion valve.
It should be noted that, refrigerant circulation process during freezing cycle device 1000 refrigerating operaton and heating operation according to the embodiment of the present invention has been described in detail above-mentioned, just repeats no more here.
According to the freezing cycle device 1000 of the embodiment of the present invention, by being provided with gas-liquid separator 100, refrigerant in refrigerant in pressure piping 4 and separated space 10 carries out heat exchange, thus make gas-liquid separator 100 serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of freezing cycle device 1000, thus improve the refrigerating efficiency of compressor 200, improve the COP of freezing cycle device 1000.
As shown in figure 12, in some embodiments of the invention, freezing cycle device 1000 also comprises auxiliary stream 900, and auxiliary stream 900 is connected with the outlet side 33 of low pressure escape pipe 3 with pressure piping 4 respectively, and auxiliary stream 900 is in series with the second throttling arrangement 700 and control valve 800.
Specifically, the first end of auxiliary stream 900 is connected between first throttle device 600 and pressure piping 4, and the second end of auxiliary stream 900 is connected between low pressure escape pipe 3 and gas returning port b, and control valve 800 can be stop valve or single-pass magnetic valve.Second throttling arrangement 700 plays the effect of reducing pressure by regulating flow, and alternatively, the second throttling arrangement 700 is capillary.
It can thus be appreciated that, when freezing cycle device 1000 freezes, control valve 800 is opened, and is drained in gas returning port b after the refrigerant of first throttle device 600 outflow can mix with the refrigerant of discharging from low pressure escape pipe 3 after the reducing pressure by regulating flow again of the second throttling arrangement 700.When freezing cycle device 1000 heats, control valve 800 can be in closed condition.Thus the temperature of the refrigerant being discharged to gas returning port b can be reduced; thus reduce the temperature of the refrigerant of discharging from the exhaust outlet a of compressor 200; avoid the temperature of the exhaust outlet a of compressor 200 too high and disadvantageous phenomenon is caused to compressor 200, playing the effect of protection compressor 200.
The refrigeration system 2000 according to the embodiment of the present invention is described in detail below with reference to Figure 13.
According to the refrigeration system 2000 of the embodiment of the present invention, comprising: compressor 200, outdoor heat exchanger 400, indoor heat exchanger 500, first throttle device 600 and gas-liquid separator 100, compressor 200 has exhaust outlet a and gas returning port b.The two ends of outdoor heat exchanger 400 are connected with the first end of first throttle device 600 with exhaust outlet a respectively.
First of pressure piping 4 is imported and exported 42 and is connected with the second end of first throttle device 600, second of pressure piping 4 is imported and exported 41 and is connected with the first end of indoor heat exchanger 500, the upper end of low-pressure inlet pipe 2 is connected with the second end of indoor heat exchanger 500, and the outlet side 33 of low pressure escape pipe 3 is connected with gas returning port b.
It should be noted that, refrigerant circulation process when refrigerant circulation process during refrigeration system 2000 refrigerating operaton according to the embodiment of the present invention is freezed with freezing cycle device 1000 is identical, and has been described in detail above-mentioned, just repeats no more here.
According to the refrigeration system 2000 of the embodiment of the present invention, by being provided with gas-liquid separator 100, refrigerant in refrigerant in pressure piping 4 and separated space 10 carries out heat exchange, thus make gas-liquid separator 100 serve the effect of subcooler, regenerator and gas-liquid separation simultaneously, add degree of supercooling and the degree of superheat of refrigeration system 2000, thus improve the refrigerating efficiency of compressor 200, improve the COP of refrigeration system 2000.
As shown in figure 13, in some embodiments of the invention, refrigeration system 2000 also comprises auxiliary stream 900, and auxiliary stream 900 is connected with the outlet side 33 of low pressure escape pipe 3 with pressure piping 4 respectively, and auxiliary stream 900 is in series with the second throttling arrangement 700 and control valve 800.
Specifically, the first end of auxiliary stream 900 is connected between first throttle device 600 and pressure piping 4, and the second end of auxiliary stream 900 is connected between low pressure escape pipe 3 and gas returning port b, and control valve 800 can be stop valve or check valve.When control valve 800 is check valve, check valve is one-way conduction on the direction from the first end of auxiliary stream 900 to the second end of auxiliary stream 900.Second throttling arrangement 700 plays the effect of reducing pressure by regulating flow, and alternatively, the second throttling arrangement 700 is capillary.
It can thus be appreciated that, be drained in gas returning port b after the refrigerant of first throttle device 600 outflow can mix with the refrigerant of discharging from low pressure escape pipe 3 after the reducing pressure by regulating flow again of the second throttling arrangement 700.Thus the temperature of the refrigerant being discharged to gas returning port b can be reduced; thus reduce the temperature of the refrigerant of discharging from the exhaust outlet a of compressor 200; avoid the temperature of the exhaust outlet a of compressor 200 too high and disadvantageous phenomenon is caused to compressor 200, playing the effect of protection compressor 200.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (14)
1. a gas-liquid separator, is characterized in that, comprising:
Cylindrical shell, limits separated space in described cylindrical shell;
Low-pressure inlet pipe, one end of described low-pressure inlet pipe extend in described separated space to enter the refrigerant treating gas-liquid separation;
Low pressure escape pipe, described low pressure escape pipe extend into discharge the gaseous coolant in described separated space in described separated space, and the part being positioned at described separated space bottom of described low pressure escape pipe is provided with oil return opening;
Be suitable for the pressure piping of circulation refrigerant, described pressure piping has and is positioned at described separated space to carry out the heat exchange pipeline part of heat exchange with the refrigerant of described separated space, described pressure piping has first import and export and second of stretching out described cylindrical shell and imports and exports, and described heat exchange pipeline part has helix tube portion.
2. gas-liquid separator according to claim 1, is characterized in that, is provided with bolster in described low-pressure inlet pipe.
3. gas-liquid separator according to claim 2, is characterized in that, bends inwards to limit described bolster after a part of tube wall of described low-pressure inlet pipe is separated with all the other tube walls.
4. gas-liquid separator according to claim 1, is characterized in that, described low pressure escape pipe be positioned at described separated space and the part of the outlet side of contiguous described low pressure escape pipe is provided with return-air hole.
5. gas-liquid separator according to claim 1, is characterized in that, described helix tube portion in the vertical direction extends spirally or described helix tube portion extends spirally in the horizontal direction.
6. gas-liquid separator according to claim 1, is characterized in that, described helix tube portion is an annular spiral element.
7. gas-liquid separator according to claim 1, is characterized in that, also comprises filter, and described filter is located at described oil return opening place.
8. gas-liquid separator according to claim 1, is characterized in that, in described heat exchange pipeline part, overcoat has heat exchange fin.
9. gas-liquid separator according to claim 1, is characterized in that, the bottom of described low-pressure inlet pipe extends downward beyond the inlet end of described low pressure escape pipe.
10. gas-liquid separator according to claim 1, it is characterized in that, the line of centres of the outlet side of described low pressure escape pipe and the inlet end of described low pressure escape pipe and, angle between the outlet side of described low pressure escape pipe and the line of centres of described low-pressure inlet pipe is A, described A > 0.
11. 1 kinds of freezing cycle devices, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Commutation assembly, described commutation assembly comprises the first valve port to the 4th valve port, described first valve port is communicated with one of them in the 3rd valve port with the second valve port, and described 4th valve port and described second valve port are communicated with another in described 3rd valve port, and described first valve port is connected with described exhaust outlet;
Outdoor heat exchanger and indoor heat exchanger, the two ends of described outdoor heat exchanger are connected with the first end of first throttle device with described second valve port respectively, and the first end of described indoor heat exchanger is connected with described 3rd valve port;
Gas-liquid separator according to any one of claim 1-10, described first of described pressure piping is imported and exported and is connected with the second end of described first throttle device, described second of described pressure piping is imported and exported and is connected with the second end of described indoor heat exchanger, the upper end of described low-pressure inlet pipe is connected with described 4th valve port, and the outlet side of described low pressure escape pipe is connected with described gas returning port.
12. freezing cycle devices according to claim 11, it is characterized in that, also comprise auxiliary stream, described auxiliary stream is connected with the outlet side of described pressure piping with described low pressure escape pipe respectively, and described auxiliary stream is in series with the second throttling arrangement and control valve.
13. 1 kinds of refrigeration systems, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
Outdoor heat exchanger, the two ends of described outdoor heat exchanger are connected with the first end of described exhaust outlet with first throttle device respectively;
Indoor heat exchanger and the gas-liquid separator according to any one of claim 1-10, described first of described pressure piping is imported and exported and is connected with the second end of described first throttle device, described second of described pressure piping is imported and exported and is connected with the first end of described indoor heat exchanger, the upper end of described low-pressure inlet pipe is connected with the second end of described indoor heat exchanger, and the outlet side of described low pressure escape pipe is connected with described gas returning port.
14. refrigeration systems according to claim 13, is characterized in that, also comprise auxiliary stream, and described auxiliary stream is connected with the outlet side of described pressure piping with described low pressure escape pipe respectively, and described auxiliary stream is in series with the second throttling arrangement and control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510931214.5A CN105423663A (en) | 2015-12-14 | 2015-12-14 | Gas-liquid separator, refrigeration cycle device with same, and refrigeration system with same |
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| CN201510931214.5A CN105423663A (en) | 2015-12-14 | 2015-12-14 | Gas-liquid separator, refrigeration cycle device with same, and refrigeration system with same |
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