CN103375953B - Gas-liquid separator and there is its air-conditioning system - Google Patents

Gas-liquid separator and there is its air-conditioning system Download PDF

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Publication number
CN103375953B
CN103375953B CN201210129625.9A CN201210129625A CN103375953B CN 103375953 B CN103375953 B CN 103375953B CN 201210129625 A CN201210129625 A CN 201210129625A CN 103375953 B CN103375953 B CN 103375953B
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gas
pipe
liquid
separation chamber
liquid separation
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CN103375953A (en
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吴迎文
梁祥飞
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Abstract

The invention provides a kind of gas-liquid separator and there is its air-conditioning system.According to gas-liquid separator of the present invention, comprising: housing, enclosure interior forms airtight gas-liquid separation chamber; And two-phase inlet pipe, drain pipe and escape pipe, be all connected with gas-liquid separation chamber, the mouth of pipe being positioned at gas-liquid separation chamber of drain pipe is lower than the mouth of pipe being positioned at gas-liquid separation chamber of escape pipe; Escape pipe has the electrolyte replenishing structure from gas-liquid separation chamber to liquid make-up escape pipe.According to gas-liquid separator of the present invention and the air-conditioning system with it, the escape pipe of gas-liquid separator has electrolyte replenishing structure, escape pipe is communicated with compresser cylinder, during compressor operating, escape pipe fills into certain liq in cylinder, high temperature refrigerant gas and vapor permeation in liquid and cylinder shwoot absorb heat, and mixed refrigerant gas significantly reduces the delivery temperature of compressor, thus improves the scope of application of compressor.

Description

Gas-liquid separator and there is its air-conditioning system
Technical field
The present invention relates to refrigerating field, in particular to a kind of gas-liquid separator and the air-conditioning system with it.
Background technology
Air source heat pump system has energy-conserving and environment-protective advantage, widely uses in south China area, but due to very low at the northern area of China outdoor environment temperature in winter, heating capacity is decayed rapidly, and system reliability reduces, and cannot meet the demand of winter heating.Adopt two stages of compression heat pump effectively can improve low-temperature heating capacity, thus improve heat pump runnability under cryogenic.
In existing two stages of compression air injection enthalpy-increasing system, if use the high exhaust temperature cold-producing mediums such as R32 or NH3 to there will be the too high problem of compressor exhaust temperature when compressor high frequency operates, certainly will limit the scope of application of Two-stage Compression system like this, the reliability of compressor also can reduce.
Summary of the invention
The present invention aims to provide a kind of gas-liquid separator of effective reduction compressor exhaust temperature and has its air-conditioning system, to improve the scope of application of Two-stage Compression air-conditioning system.
The invention provides a kind of gas-liquid separator, comprising: housing, enclosure interior forms airtight gas-liquid separation chamber; And two-phase inlet pipe, drain pipe and escape pipe, be all connected with gas-liquid separation chamber, the mouth of pipe being positioned at gas-liquid separation chamber of drain pipe is lower than the mouth of pipe being positioned at gas-liquid separation chamber of escape pipe; Escape pipe has the electrolyte replenishing structure from gas-liquid separation chamber to liquid make-up escape pipe.
Further, two-phase inlet pipe and drain pipe are inserted into the bottom of gas-liquid separation chamber from the top of housing; Escape pipe is inserted into the top of gas-liquid separation chamber from the bottom of housing; Electrolyte replenishing structure is the fluid infusion hole being arranged on escape pipe tube wall and being positioned at bottom gas-liquid separation chamber.
Further, two-phase inlet pipe and drain pipe are inserted into the bottom of gas-liquid separation chamber from the top of housing; Escape pipe inserts from the top of housing and makes its mouth of pipe be positioned at the top of gas-liquid separation chamber by U-shaped pipe; Electrolyte replenishing structure is the fluid infusion hole be arranged on the tube wall of U-shaped pipe.
Further, fluid infusion hole is provided with screen pack.
Further, two-phase inlet pipe and drain pipe are inserted into the bottom of gas-liquid separation chamber from the top of housing; Escape pipe is inserted into the top of gas-liquid separation chamber from the bottom of housing; Electrolyte replenishing structure comprises liquid supplementation pipe, and the upper end of liquid supplementation pipe is positioned at the bottom of gas-liquid separation chamber, and the lower end of liquid supplementation pipe is positioned at the outside of housing and is connected to the sidewall of escape pipe, and liquid supplementation pipe is provided with valve.
Further, two-phase inlet pipe and drain pipe are inserted into the bottom of gas-liquid separation chamber from the bottom of housing; Escape pipe is inserted into the top of gas-liquid separation chamber from the bottom of housing; Electrolyte replenishing structure comprises liquid supplementation pipe, and liquid supplementation pipe comprises the first liquid supplementation pipe connecting escape pipe and two-phase inlet pipe, and connects the second liquid supplementation pipe of escape pipe and drain pipe, and the first liquid supplementation pipe and the second liquid supplementation pipe are provided with valve.
Further, the orifice plate between two-phase inlet pipe and drain pipe is provided with in gas-liquid separation chamber.
Further, the vertical setting of housing, its sidewall is cylindrical; Two-phase inlet pipe enters gas-liquid separation chamber from the middle part of the sidewall of housing, and drain pipe enters the bottom of gas-liquid separation chamber from the bottom of the sidewall of housing; Escape pipe is inserted into gas-liquid separation chamber from the bottom of housing and extends up to the top of gas-liquid separation chamber; Electrolyte replenishing structure is be arranged on escape pipe tube wall and be positioned at the fluid infusion hole of the bottom of gas-liquid separation chamber.
Further, two-phase inlet pipe enters gas-liquid separation chamber along the tangential direction of housing cylindrical sidewall; Hole is provided with screen pack in fluid infusion.
Further, the horizontal setting of housing; Two-phase inlet pipe and drain pipe insert gas-liquid separation chamber from the top of housing and extend downwardly into the bottom of gas-liquid separation chamber; Escape pipe inserts gas-liquid separation chamber from the bottom of housing and extends up to the top of gas-liquid separation chamber; Electrolyte replenishing structure is the fluid infusion hole being arranged on escape pipe tube wall and being positioned at bottom gas-liquid separation chamber, and hole is provided with screen pack in fluid infusion.
Further, the horizontal setting of housing; Two-phase inlet pipe and drain pipe are inserted into the bottom of gas-liquid separation chamber from the bottom of housing; Escape pipe is inserted into gas-liquid separation chamber from the bottom of housing and extends up to the top of gas-liquid separation chamber; Electrolyte replenishing structure comprises liquid supplementation pipe, and liquid supplementation pipe comprises the first liquid supplementation pipe connecting escape pipe and two-phase inlet pipe, and connects the second liquid supplementation pipe of escape pipe and drain pipe, and the first liquid supplementation pipe and the second liquid supplementation pipe are provided with valve.
Further, housing bottom be provided with two-phase inlet pipe with between drain pipe and two orifice plates being arranged symmetrically with of relative escape pipe.
Further, two-phase inlet pipe enters gas-liquid separation chamber from the middle part of housing, or tangentially direction enters gas-liquid separation chamber.
Further, the mouth of pipe of two-phase inlet pipe, drain pipe and escape pipe is all set to angular cut.
Further, the position of electrolyte replenishing structure is lower than the position being positioned at the mouth of pipe of gas-liquid separation chamber of two-phase inlet pipe and drain pipe.
Present invention also offers a kind of air-conditioning system, comprising: compressor; Evaporimeter, is connected with compressor; Condenser, is connected with compressor; Also comprise aforesaid gas-liquid separator, the two-phase inlet pipe of gas-liquid separator is connected with the venthole of condenser, and drain pipe is connected with evaporimeter, and the cylinders of escape pipe and compressor leads to.
According to gas-liquid separator of the present invention and the air-conditioning system with it, the escape pipe of gas-liquid separator has electrolyte replenishing structure, escape pipe is communicated with compresser cylinder, during compressor operating, escape pipe fills into certain liq in cylinder, and the high temperature refrigerant gas and vapor permeation in liquid and cylinder shwoot absorb heat, and mixed refrigerant gas significantly reduces the delivery temperature of compressor, thus improve the reliability of compressor, and then improve the scope of application of compressor.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the first embodiment according to gas-liquid separator of the present invention;
Fig. 2 is the partial enlarged drawing at the middle label I place of Fig. 1;
Fig. 3 is the dimensional requirement schematic diagram of the first embodiment according to gas-liquid separator of the present invention;
Fig. 4 is the partial enlarged drawing at the middle label III place of Fig. 3;
Fig. 5 is the structural representation of the second embodiment according to gas-liquid separator of the present invention;
Fig. 6 is the partial enlarged drawing at the middle label II place of Fig. 5;
Fig. 7 is the structural representation of the 3rd embodiment according to gas-liquid separator of the present invention;
Fig. 8 is the structural representation of the 4th embodiment according to gas-liquid separator of the present invention;
Fig. 9 is the structural representation of the 5th embodiment according to gas-liquid separator of the present invention;
Figure 10 is the top view of gas-liquid separator embodiment illustrated in fig. 9;
Figure 11 is the structural representation of the 6th embodiment according to gas-liquid separator of the present invention;
Figure 12 is the structural representation of the 7th embodiment according to gas-liquid separator of the present invention;
Figure 13 a and Figure 13 b is the side view of Figure 11 or gas-liquid separator embodiment illustrated in fig. 12;
Figure 14 is the structural representation of the first embodiment according to air-conditioning system of the present invention;
Figure 15 is the structural representation of the second embodiment according to air-conditioning system of the present invention; And
Figure 16 is the structural representation of the 3rd embodiment according to air-conditioning system of the present invention.
Detailed description of the invention
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
As shown in Fig. 1,5,7,8,9,11,12, according to gas-liquid separator of the present invention, comprising: housing 10, housing 10 inside forms airtight gas-liquid separation chamber; And two-phase inlet pipe 20, drain pipe 30 and the escape pipe 40 to be connected with gas-liquid separation chamber, the mouth of pipe being positioned at gas-liquid separation chamber of drain pipe 30 is lower than the mouth of pipe being positioned at gas-liquid separation chamber of escape pipe 40; Escape pipe 40 has the electrolyte replenishing structure from gas-liquid separation chamber to liquid make-up escape pipe 40.Escape pipe 40 is communicated with compresser cylinder, during compressor operating, escape pipe 40 fills into certain liq refrigerant in cylinder, high temperature refrigerant gas and vapor permeation in liquid coolant and cylinder shwoot absorb heat, mixed refrigerant gas significantly reduces the delivery temperature of compressor, thus improve the reliability of compressor, and then improve the scope of application of compressor.
Preferably, the position of electrolyte replenishing structure lower than the position being positioned at the mouth of pipe of gas-liquid separation chamber of two-phase inlet pipe and drain pipe, thus makes the gaseous coolant entering electrolyte replenishing structure as far as possible few, is convenient to the amount of the liquid refrigerants controlling to enter electrolyte replenishing structure.
As illustrated in fig. 1 and 2, according to the first embodiment of the present invention, two-phase inlet pipe 20 and drain pipe 30 are inserted into the bottom of gas-liquid separation chamber from the top of housing 10, the mouth of pipe of two-phase inlet pipe 20 and drain pipe 30 is positioned at below the liquid level of gas-liquid separation chamber, two-phase inlet pipe 20 gas and liquid two-phase mixtures enter gas-liquid separation chamber makes gas-liquid separation, escape pipe 40 is inserted into gas-liquid separation top of chamber from the bottom of housing 10, and the mouth of pipe of escape pipe 40 is positioned at more than liquid level.
When the mouth of pipe of two-phase inlet pipe 20 and drain pipe 30 is all positioned at below liquid level, gas-liquid separator has bi-directional nature for heat pump, and namely in refrigeration with when heating, the function of two-phase inlet pipe 20 and drain pipe 30 can exchange use.The middle part of gas-liquid separation chamber is provided with an orifice plate 11, and orifice plate 11, between two-phase inlet pipe 20 and drain pipe 30, has certain barrier effect to the bubble gone out from two-phase inlet pipe 20, prevents from entering drain pipe 30 between bubble, improves gas-liquid separation effect.
Electrolyte replenishing structure is be arranged on escape pipe 40 tube wall and the fluid infusion hole 41 be positioned at bottom gas-liquid separation chamber, namely the fluid infusion hole 41 on escape pipe 40 is arranged on below liquid level to liquid make-up in escape pipe 40, the liquid supplemented finally enters in compresser cylinder, with the high temperature refrigerant gas and vapor permeation in cylinder and shwoot absorb heat, mixed refrigerant gas significantly reduces the delivery temperature of compressor.Because the aperture in fluid infusion hole 41 is less, in order to prevent the impurity blocking fluid infusion hole 41 in liquid, fluid infusion hole 41 arranges screen pack 42 to the liquid filtering entering fluid infusion hole 41.
Because the size of gas-liquid separator is obvious on systematic function impact, therefore need to design corresponding gas-liquid separator size according to system capability, Fig. 3 and Fig. 4 is gas-liquid separator scale diagrams, design principle is as follows, when system cooling capacity is 5kW, gas-liquid separator diameter D is set as within the scope of 30 ~ 60mm, optimum gas liquid/gas separator diameter is about 40mm, gas-liquid separator height H, H is set as in the scope of 2≤H/D≤6, the diameter d tp of two-phase inlet pipe 20 is set as within the scope of 5 ~ 9.52mm, the diameter d l of drain pipe 30 is set as in the scope of 0.5≤dl/dtp≤1, the diameter d g of escape pipe 40 is set as in the scope of 0.3≤dg/dl≤1, two-phase inlet pipe 20 height H tp is set as in the scope of 0≤Htp/H≤0.5, the height H g of escape pipe 40 is set as in the scope of 0.5≤Hg/H≤1, the diameter d c in fluid infusion hole 41 is set as 0.1≤dc/dg≤0.5, spray hole height H c is set as within the scope of 0≤Hc≤Htp.When system capability is in other scopes, gas-liquid separator design size is benchmark with 5kW, and corresponding size is multiplied by wherein Qe is refrigerating capacity, and 5 are reference system cold 5kw.
On systematic function impact clearly, dc is excessive, and amount infused too much causes compressor Wet Compression for fluid infusion hole 41 diameter d c, and the very few compressor exhaust temperature of amount infused reduces not obvious, and therefore suitable fluid infusion hole 41 diameter normally runs extremely important to system.Spray hole calculates and adopts two phase refrigerant cavitation efficiency computational methods in escape pipe, spray hole diameter result of calculation is given in table 1, select R32 cold-producing medium, in given different cold-producing medium total flow, saturation temperature, mass dryness fraction and given escape pipe diameter, indicate that TD and mass dryness fraction affect very larger on spray hole diameter.
Table 1 spray hole diameter result of calculation
Flow Temperature Mass dryness fraction Escape pipe diameter Spray hole diameter
kg/h / mm mm
53.34 22.2 0.54 5 2.16
56.06 23.6 0.59 4.6 1.85
58 25.1 0.64 2.4 0.79
60.79 26.7 0.67 2.1 0.62
64.04 28.5 0.69 1.8 0.48
50.22 30.3 0.31 1.63 0.80
58.12 9.3 0.69 1.37 0.27
As illustrated in Figures 5 and 6, according to a second embodiment of the present invention, two-phase inlet pipe 20 and drain pipe 30 are inserted into the bottom of gas-liquid separation chamber from the top of housing 10, the mouth of pipe of two-phase inlet pipe 20 and drain pipe 30 is positioned at below the liquid level of gas-liquid separation chamber, two-phase inlet pipe 20 gas and liquid two-phase mixtures enter gas-liquid separation chamber makes gas-liquid separation, escape pipe 40 inserts from the top of housing 10 and makes its mouth of pipe be positioned at gas-liquid separation top of chamber by U-shaped pipe, a part for U-shaped pipe is positioned at below the liquid level of gas-liquid separation chamber, electrolyte replenishing structure is be arranged on U-shaped pipe to be positioned at fluid infusion hole 41 on the tube wall of below liquid level, fluid infusion hole 41 is arranged on through hole on differing heights for one or more, fluid infusion hole 41 is provided with the screen pack 42 preventing impurity from blocking fluid infusion hole 41.The refrigerant of part liquid enters outlet 40 from fluid infusion hole 41, and finally enters compresser cylinder, with the high temperature refrigerant gas and vapor permeation in cylinder and shwoot absorb heat, mixed refrigerant gas significantly reduces the delivery temperature of compressor.
When the mouth of pipe of two-phase inlet pipe 20 and drain pipe 30 is all positioned at below liquid level, gas-liquid separator has bi-directional nature for heat pump, and namely in refrigeration with when heating, the function of two-phase inlet pipe 20 and drain pipe 30 can exchange use.The middle part of gas-liquid separation chamber is provided with an orifice plate 11, and orifice plate 11, between two-phase inlet pipe 20 and drain pipe 30, has certain barrier effect to the bubble gone out from two-phase inlet pipe 20, prevents from entering drain pipe 30 between bubble, improves gas-liquid separation effect.
As shown in Figure 7, according to the third embodiment of the invention, two-phase inlet pipe 20 and drain pipe 30 are inserted into the bottom of gas-liquid separation chamber from the top of housing 10, the mouth of pipe of two-phase inlet pipe 20 and drain pipe 30 is positioned at below the liquid level of gas-liquid separation chamber, two-phase inlet pipe 20 gas and liquid two-phase mixtures enter gas-liquid separation chamber makes gas-liquid separation, escape pipe 40 is inserted into gas-liquid separation top of chamber from the bottom of housing 10, and the mouth of pipe of escape pipe 40 is positioned at more than liquid level.The middle part of gas-liquid separation chamber is provided with the orifice plate 11 intercepting bubble between two-phase inlet pipe 20 and drain pipe 30.
Electrolyte replenishing structure comprises liquid supplementation pipe 43, the upper end of liquid supplementation pipe 43 is positioned at the bottom of gas-liquid separation chamber, the lower end of liquid supplementation pipe 43 is positioned at the outside of housing and is connected to the sidewall of escape pipe 40, liquid supplementation pipe is provided with valve 44, for controlling the liquid refrigerants amount entering escape pipe 40.Preferably, valve 44 is electric expansion valve and magnetic valve, is convenient to automatic control.
As shown in Figure 8, according to a fourth embodiment of the invention, two-phase inlet pipe 20 and drain pipe 30 are inserted into the bottom of gas-liquid separation chamber from the bottom of housing 10; Escape pipe 40 is inserted into gas-liquid separation top of chamber from the bottom of housing 10; Escape pipe 40 is communicated with by liquid supplementation pipe 43 with drain pipe 30 with two-phase inlet pipe 20 respectively, liquid supplementation pipe 43 is provided with valve 44 for controlling to enter the liquid refrigerants amount of escape pipe 40, liquid refrigerants directly can enter escape pipe 40 from drain pipe 30 or two-phase inlet pipe 20, due to drain pipe 30 and two-phase inlet pipe 20 and liquid supplementation pipe 43 full symmetric, therefore the two-way use of pressure separation device arranged like this, namely switch use in refrigeration with when heating.The middle part of gas-liquid separation chamber is provided with the orifice plate 11 intercepting bubble between two-phase inlet pipe 20 and drain pipe 30.
As shown in Figure 9, according to a fifth embodiment of the invention, the vertical setting of housing 10, its inner formation gas-liquid separation chamber, the sidewall of housing is cylindrical; Two-phase inlet pipe 20 enters gas-liquid separation chamber from the middle part of the sidewall of housing 10, and drain pipe 30 enters the bottom of gas-liquid separation chamber from the bottom of the sidewall of housing 10; Escape pipe 40 is inserted into gas-liquid separation top of chamber from the bottom of housing 10, and the mouth of pipe of escape pipe 40 is positioned at more than the liquid level of gas-liquid separation chamber, the tube wall being positioned at below liquid level is provided with fluid infusion hole 41, fluid infusion hole 41 is provided with screen pack 42 at escape pipe 40.
Preferably, as shown in Figure 10, two-phase inlet pipe 20 enters gas-liquid separation chamber along the tangential direction of housing 10 cylinder side wall, two-phase refrigerant mist at a high speed enters gas-liquid separation chamber and along sidewall High Rotation Speed along sidewall, under the influence of centrifugal force, liquid coolant is thrown toward sidewall and is separated with gas coolant, two-phase inlet pipe 20 is set like this and relatively and in embodiment 1 to 4 there is the better advantage of gas-liquid separation effect, but, because two-phase inlet pipe 20 is different with the position that drain pipe 30 is arranged, (mouth of pipe of two-phase inlet pipe 20 is positioned at more than liquid level to this gas-liquid separator, the mouth of pipe of drain pipe 30 is positioned at below liquid level).Therefore this gas-liquid separator can only be used for triangular web, namely freezes or heats, and the switching freezing and heat state can not be completed in same system.
As shown in figure 11, according to a sixth embodiment of the invention, the horizontal setting of housing 10, other arrange the first embodiment be similar to as shown in Figure 1, when the horizontal setting of housing 10, increase the distance between two-phase inlet pipe 20 and drain pipe 30, from two-phase inlet pipe 20 mist out after sufficient natural separation just by drain pipe 30 sucking-off, improve the effect of gas-liquid separation.Also multiple orifice plate 11 also can be set in gas-liquid separation chamber, strengthen, to the stop of bubble, being conducive to gas-liquid separation.
Electrolyte replenishing structure is be arranged on escape pipe 40 tube wall and the fluid infusion hole 41 be positioned at bottom gas-liquid separation chamber, namely the fluid infusion hole 41 on escape pipe 40 is arranged on below liquid level to liquid make-up in escape pipe 40, the liquid supplemented finally enters in compresser cylinder, with the high temperature refrigerant gas and vapor permeation in cylinder and shwoot absorb heat, mixed refrigerant gas significantly reduces the delivery temperature of compressor.Because the aperture in fluid infusion hole 41 is less, in order to prevent the impurity blocking fluid infusion hole 41 in liquid, fluid infusion hole 41 arranges screen pack 42 to the liquid filtering entering fluid infusion hole 41.
Escape pipe 40 also can adopt U-shaped pipe in the second embodiment as shown in Figure 5, and fluid infusion hole 41 arranges U-shaped pipe and is positioned on the tube wall of the part of below liquid level.
As shown in figure 12, according to a seventh embodiment of the invention, the horizontal setting of housing 10, other arrange the 4th embodiment be similar to as shown in Figure 8, when the horizontal setting of housing 10, increase the distance between two-phase inlet pipe 20 and drain pipe 30, from two-phase inlet pipe 20 mist out after sufficient natural separation just by drain pipe 30 sucking-off, improve the effect of gas-liquid separation.Also multiple orifice plate 11 also can be set in gas-liquid separation chamber, strengthen, to the stop of bubble, being conducive to gas-liquid separation.Preferably, arrange two orifice plates, 11, two orifice plates 11 bottom housing 10 to be symmetrical arranged.
As depicted in fig. 13 a, two-phase inlet pipe 20 vertically can be arranged on the middle part of housing 10, gas-liquid two-phase mist natural separation, also can as illustrated in fig. 13b, and the tangent line along housing 10 is arranged, and liquid coolant is separated with gaseous coolant under the influence of centrifugal force.
Preferably, in each embodiment above-mentioned, the mouth of pipe of two-phase inlet pipe 20, drain pipe 30 and escape pipe 40 is all set to angular cut, increases the contact area with gas-liquid separation chamber, is conducive to gas and enters or suck.
As shown in Figure 14 to 16, of the present inventionly additionally provide a kind of air-conditioning system, comprising: compressor 101, evaporimeter 104 and condenser 102.Evaporimeter 104 is connected with the air inlet of compressor 101; Condenser 102 is connected with the gas outlet of compressor 101; Air-conditioning system also comprises aforesaid gas-liquid separator 103, and the two-phase inlet pipe 20 of gas-liquid separator 103 is connected with the venthole of condenser 102, and drain pipe 30 is connected with evaporimeter 104, and escape pipe 40 leads to the cylinders of compressor.Escape pipe 40 supplements a certain amount of liquid refrigerants in compresser cylinder, high temperature refrigerant gas and vapor permeation in liquid coolant and cylinder shwoot absorb heat, mixed refrigerant gas significantly reduces the delivery temperature of compressor, thus improve the reliability of compressor, and then improve the scope of application of compressor.
As shown in Figure 14 to 16, during system heating operation, the refrigerant gas of HTHP is discharged from compressor 101, after four-way change-over valve 107 enters indoor condenser 102 condensation, become the refrigerant liquid of cryogenic high pressure, after the first electric expansion valve 105 throttling, become the two phase refrigerant with certain mass dryness fraction enter gas-liquid separator 103, after gas-liquid separation, gas enters tonifying Qi loop and is sucked by compressor, and the through hole of partially liq on escape pipe 40 or liquid supplementation pipe are sucked by compressor simultaneously simultaneously.Liquid refrigerants in gas-liquid separator enters the evaporimeter 104 being positioned at outdoor and evaporates after the second electric expansion valve 106 throttling, and the superheated refrigerant of formation is sucked by compressor through cross valve 107.
As shown in figure 14, air-conditioning system adopts the gas-liquid separator of the first embodiment as shown in Figure 1, this gas-liquid separator is symmetrical arranged and makes gas-liquid separator have bi-directional nature due to two-phase inlet pipe 20, drain pipe 30, thus make the air-conditioning system of this gas-liquid separator of application both can be operated in kind of refrigeration cycle, also can be operated in and heat circulation.
As shown in figure 15, air-conditioning system adopts the gas-liquid separator of the 3rd embodiment as shown in Figure 7, and this gas-liquid separator, due to mal-distribution, can only be used for simple subprogram, namely can only be used for kind of refrigeration cycle or heat circulation, and in kind of refrigeration cycle and circulation switching mutually can not be heated.
In order to the air-conditioning system solved as shown in figure 15 in kind of refrigeration cycle and can not heat the problem mutually switched between circulation, as shown in figure 16, air-conditioning system arranges three-way solenoid valve 108, change kind of refrigeration cycle by three-way solenoid valve 108 and heat the flow direction of circulation time refrigerant, thus making this system may be simultaneously operated in kind of refrigeration cycle and heat circulation.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
According to gas-liquid separator of the present invention and the air-conditioning system with it, the escape pipe of gas-liquid separator has electrolyte replenishing structure, escape pipe is communicated with compresser cylinder, during compressor operating, escape pipe fills into certain liq in cylinder, and the high temperature refrigerant gas and vapor permeation in liquid and cylinder shwoot absorb heat, and mixed refrigerant gas significantly reduces the delivery temperature of compressor, thus improve the reliability of compressor, and then improve the scope of application of compressor.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1. a gas-liquid separator, comprising:
Housing (10), described housing (10) inside forms airtight gas-liquid separation chamber; And
Two-phase inlet pipe (20), drain pipe (30) and escape pipe (40), all be connected with described gas-liquid separation chamber, the mouth of pipe being positioned at described gas-liquid separation chamber of described drain pipe (30) is lower than the mouth of pipe being positioned at described gas-liquid separation chamber of described escape pipe (40);
It is characterized in that, described escape pipe (40) has the electrolyte replenishing structure from described gas-liquid separation chamber to liquid make-up described escape pipe (40);
Described electrolyte replenishing structure comprises liquid supplementation pipe (43), described liquid supplementation pipe (43) comprises the first liquid supplementation pipe connecting described escape pipe (40) and described two-phase inlet pipe (20), and connect the second liquid supplementation pipe of described escape pipe (40) and described drain pipe (30), described first liquid supplementation pipe and described second liquid supplementation pipe are provided with valve (44).
2. gas-liquid separator according to claim 1, is characterized in that,
Described housing (10) horizontal setting;
Described two-phase inlet pipe (20) and described drain pipe (30) are inserted into the bottom of described gas-liquid separation chamber from the bottom of described housing (10);
Described escape pipe (40) is inserted into described gas-liquid separation chamber from the bottom of described housing (10) and extends up to the top of described gas-liquid separation chamber.
3. gas-liquid separator according to claim 2, it is characterized in that, described housing (10) bottom be provided be positioned at described two-phase inlet pipe (20) with between described drain pipe (30) and two orifice plates (11) being arranged symmetrically with of relative described escape pipe (40).
4. gas-liquid separator according to claim 2, is characterized in that, described two-phase inlet pipe (20) enters described gas-liquid separation chamber from the middle part of described housing, or tangentially direction enters described gas-liquid separation chamber.
5. gas-liquid separator according to claim 1, is characterized in that, the mouth of pipe of described two-phase inlet pipe (20), described drain pipe (30) and described escape pipe (40) is all set to angular cut.
6. gas-liquid separator according to claim 1, is characterized in that, the position of described electrolyte replenishing structure is lower than the position being positioned at the mouth of pipe of described gas-liquid separation chamber of described two-phase inlet pipe (20) and described drain pipe (30).
7. an air-conditioning system, comprising:
Compressor (101);
Evaporimeter (104), is connected with described compressor (101);
Condenser (102), is connected with described compressor (101);
It is characterized in that, also comprise the gas-liquid separator (103) according to any one of claim 1 to 6, the two-phase inlet pipe (20) of described gas-liquid separator (103) is connected with the venthole of described condenser (102), drain pipe (30) is connected with described evaporimeter (104), and escape pipe (40) leads to the cylinders of compressor.
CN201210129625.9A 2012-04-27 2012-04-27 Gas-liquid separator and there is its air-conditioning system Active CN103375953B (en)

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CN107650623A (en) * 2017-08-08 2018-02-02 江苏昊科汽车空调有限公司 High-efficiency and energy-saving type vehicle-mounted air conditioner compressor
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