CN101614459A - Gas-liquid separator - Google Patents
Gas-liquid separator Download PDFInfo
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- CN101614459A CN101614459A CN200910041177A CN200910041177A CN101614459A CN 101614459 A CN101614459 A CN 101614459A CN 200910041177 A CN200910041177 A CN 200910041177A CN 200910041177 A CN200910041177 A CN 200910041177A CN 101614459 A CN101614459 A CN 101614459A
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Abstract
A kind of gas-liquid separator, comprise chamber, the liquid coolant outlet that communicates with the chamber bottom, the gas coolant outlet that communicates with chamber top, and the gas-liquid refrigerant inlet tube that communicates with chamber, the gas coolant outlet is provided with the gas coolant outlet opening that communicates with chamber top, and the gas coolant outlet is provided with the float valve that opens and closes this gas coolant outlet opening.Float valve comprises spring and floating of sliding along the surface of gas coolant outlet, and spring is arranged between floating and the chamber inner wall.Floating and spring housing are located on the gas coolant outlet.The present invention has the float valve that joins with the gas coolant outlet in the gas-liquid separator indoor design, when the liquid level in the gas-liquid separator chamber rises to certain position, float valve will cut out out the gas coolant outlet opening on the gas refrigerant exit pipe gradually and thoroughly, enter compressor, will guarantee the effect of air injection enthalpy-increasing and the reliability of compressor thereby stop liquid coolant.
Description
Technical field
The present invention relates to a kind of gas-liquid separator.
Background technology
It is on high-tension side rotary compressor that air-conditioning system is equipped with the housing internal pressure, between condenser and evaporimeter, dispose gas-liquid separator 1 as shown in Figure 1 usually, after the refrigerant of gas-liquid two-phase enters housing 4 from inlet tube 2, liquid refrigerant is because density rests on housing 4 bottoms greatly, and gaseous coolant then enters system by outlet 3 discharges and circulates.Gas-liquid separator 1 is separated into liquid coolant and gas coolant to the refrigerant that comes out from condenser, only gas coolant is injected the cylinder of compressor compression chamber, by so-called gas coolant injection mode, improves air-conditioning greenhouse ability significantly.Under the bigger operating condition of outdoor temperature and indoor temperature change; rate variable at gas-liquid separator 1 inner gas coolant that takes place and liquid coolant is also bigger; and this gas-liquid separator 1 can not be stopped liquid refrigerants and discharges the system that enters from outlet 3; when expiring liquid in the housing; liquid refrigerants is discharged the system that enters from escape pipe 3; so usually can cause liquid refrigerants to enter compressor; the lubricating oil of dilution compressor; the hydraulic pressure phenomenon that contracts produces; make lubricity variation reliability variation, the parts of doing to slide that abrasion and generation fault take place rapidly.
Solution for above problem, the common practice is the front and back at gas-liquid separator, even just in the outlet of the gas coolant of gas-liquid separator, append and add up to 2 to 3 cold medium flux autocontrol valve, prevent the outflow of the liquid coolant in the gas-liquid separator, this method is used on the part air-conditioning system.But this method directly causes cost of manufacture to increase considerably, and also brings great difficulty in control, therefore, also just becomes the main cause that gas coolant injection formula compressor is not popularized on most air-conditioning system.
At this situation, some manufacturer has done a little improvement, as disclosing a kind of gas-liquid separator among the Chinese patent literature CN 1851365A, it comprises the disengagement chamber outer cylinder body, the sap cavity outer cylinder body, place disengagement chamber outer cylinder body tangential direction the gas-liquid mixed refrigerant inlet tube, place the liquid refrigerant outlet pipe of sap cavity outer cylinder body bottom, buoyancy aid is arranged in the sap cavity, there is tapered needle valve the buoyancy aid upper end, and there is valve port the lower end of gaseous refrigerant outlet.Narrow meshed inner barrel is arranged in disengagement chamber and the sap cavity, and inner barrel middle part and lower end are provided with inside annular rim.The refrigerant that this gas-liquid separator can reduce gas-liquid two-phase to a certain extent enters the probability of compressor, but still can not accomplish total ban, and the cost of manufacture of this gas-liquid separator is higher, makes the user not too satisfied.
Summary of the invention
Purpose of the present invention aim to provide a kind of simple and reasonable, cost of manufacture is low, can stop the gas-liquid separator that liquid coolant enters compressor, guarantees the reliability of the effect of air injection enthalpy-increasing and compressor when full liquid or liquid level reach certain height in the gas-liquid separator, to overcome weak point of the prior art.
A kind of gas-liquid separator by this purpose design, comprise chamber, the liquid coolant outlet that communicates with the chamber bottom, the gas coolant outlet that communicates with chamber top, and the gas-liquid refrigerant inlet tube that communicates with chamber, it is characterized in that the gas coolant outlet is provided with the gas coolant outlet opening that communicates with chamber top, the gas coolant outlet is provided with the float valve that opens and closes this gas coolant outlet opening.
Described float valve comprises spring and floating of sliding along the surface of gas coolant outlet, and spring is arranged between floating and the chamber inner wall.
Described floating and spring housing are located on the gas coolant outlet.
Be provided with sleeve pipe between described floating and the gas refrigerant exit pipe.
Described gas coolant outlet is provided with block, and floating is arranged between block and the spring.
Vertical or the oblique setting of described gas coolant outlet.
Described gas coolant outlet opening is symmetricly set on the gas coolant outlet.
The present invention has the float valve that joins with the gas coolant outlet in the gas-liquid separator indoor design, when the liquid level in the gas-liquid separator chamber rises to certain position, float valve will cut out out the gas coolant outlet opening on the gas refrigerant exit pipe gradually and thoroughly, enter compressor, will guarantee the effect of air injection enthalpy-increasing and the reliability of compressor thereby stop liquid coolant.
The characteristics that the present invention has is simple and reasonable, cost of manufacture is low and reliability is high.
Description of drawings
Fig. 1 is the broken section structural representation of existing gas-liquid separator.
Fig. 2 is relevant with embodiments of the invention, is equipped with the air-conditioning system schematic diagram of gas coolant injection formula rotary compressor.
Fig. 3 is the P-h figure of kind of refrigeration cycle related to the present invention.
Fig. 4 is the structural representation of gas-liquid separator.
Fig. 5 is the operating principle schematic diagram of gas-liquid separator.
Among the figure: 1 is gas-liquid separator of the prior art, and 2 is inlet tube, and 3 is outlet, 4 is housing, and 5 is indoor heat exchanger, and 6 is outdoor heat exchanger, 7 are the gas-liquid separator among the present invention, and 8a is first capillary, and 8b is second capillary, 8c is a three capillary, and 11 is liquid coolant, and 12 is gas coolant, 13 is compressor liquid storage can, and 14 is compressor suction duct, and 15 is the gas coolant outlet, 16 for connecting tracheae, 17 is the gas coolant ascending pipe, and 18a is first check valve, and 18b is second check valve, 19 is gas-liquid refrigerant inlet tube, 20 is the liquid coolant outlet, and 21 is float valve, and 22 is floating, 23 is sleeve pipe, 24 is the gas coolant outlet opening, and 25 is spring, and 26 is block, 27 is rotary compressor, 28 is seal casinghousing, and 29 is discharge pipe, and 30 is four-way switching valve.
The specific embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Referring to Fig. 2, the air-conditioning system cycle period that carries rotary compressor 27 has been described.The high-pressure side of the internal pressure of the seal casinghousing 28 of compressor 27 for equating with the pressure that spues, be welded on the discharge pipe 29 of upper end, be connected to the inlet of indoor heat exchanger 5 via four-way switching valve 30, between the outlet of indoor heat exchanger 5 and outdoor heat exchanger 6, be equipped with gas-liquid separator 7,5 of gas-liquid separator 7 and indoor heat exchangers with and and 6 of outdoor heat exchangers, connect the first capillary 8a and the second capillary 8b and the first check valve 18a respectively.
The outlet of outdoor heat exchanger 6 is connected in the inlet of the compressor liquid storage can 13 that joins with compressor 27 via four-way switching valve 30.The bottom of compressor liquid storage can 13 connects compressor suction line 14.The gas coolant outlet 15 on gas-liquid separator 7 tops is connected to the gas coolant ascending pipe 17 that is configured in compressor 27 sides via connecting tracheae 16, and circulation constitutes the air-conditioning system greenhouse cycle like this.Otherwise, switch by four-way switching valve 30, the pressurized gas refrigerant that spues from compressor 27 is via outdoor heat exchanger 6, behind the second check valve 18b and three capillary 8c, become low pressure refrigerant, through indoor heat exchanger 5, four-way switching valve 30, be inhaled into into compressor 27 by compressor liquid storage can 13, then constitute the air-conditioning system refrigeration cycle.As shown in Figure 2, the greenhouse of briefly understanding air-conditioning system uses gas-liquid separator 7, cold-room obsolete structure in the cycle in the cycle.
Below be that the center describes just with the greenhouse cycle.
Greenhouse is in the cycle, and indoor heat exchanger 5 is to indoor heat release, and the liquid coolant of condensation is depressurized by the first capillary 8a, during from gas-liquid refrigerant inlet tube 19 inflow gas-liquid separators 7, is separated into gas coolant 12 and overcooled liquid coolant 11.Gas coolant 12, is connected with the gas coolant ascending pipe 17 that is configured in compressor 27 sides via connecting tracheae 16 from gas coolant outlet 15.Gas coolant ascending pipe 17 is via the gas coolant injection device that is configured in compressor 27, to cylinder compression chamber supply gas refrigerant.Overcooled liquid coolant is from the liquid coolant outlet 20 of gas-liquid separator 7 bottoms, and via the second capillary 8b, evaporation becomes low pressure refrigerant in outdoor heat exchanger 6, is inhaled into into compressor 27 from compressor liquid storage can 13.The gas coolant pressure P i that takes place in gas-liquid separator 7, the pressure P d that spues of ratio piston compressor 27 is low, and is more much higher than suction pressure Ps.
Therefore, the gas coolant that takes place in gas-liquid separator 7 by connecting tracheae 16, from the gas coolant ascending pipe 17 of compressor 27, is injected into the into cylinder compression chamber of compressor 27 (not having diagram).Be injected into the gas coolant of inlet casing compression chamber, mix the gas in the compression, become the suitable gases at high pressure of pressure P d that spue with compressor 27, be released to the inside of seal casinghousing 28.
As above, compressor 27 plays the overcooled effect of the liquid coolant that makes in the gas-liquid separator 7 by sucking the gas coolant that takes place in the gas-liquid separator 7, and therefore, outdoor heat exchanger 6 can increase caloric receptivity.And the gas coolant that compressor 27 sucks is compressed the back and participates in indoor heat exchanger 5 circulations, and therefore, the thermal discharge of indoor heat exchanger 5 increases.Therefore, the recruitment of this heat absorption and heat release by a gas coolant that takes place is injected compressor 27 to greatest extent, can reach maximum in gas-liquid separator 7.
Referring to Fig. 3, be the P-h figure in this greenhouse cycle, the ordinate of this figure is a pressure, abscissa is the h enthalpy.G is the refrigerant circulation that flows in the outdoor heat exchanger 6, and g is the gas coolant amount that compressor 27 sucks.Therefore, the refrigerant circulation that flows in the indoor heat exchanger 5 becomes G+g.And, by gas-liquid separator 7, the liquid coolant supercooling, the caloric receptivity of outdoor heat exchanger 6 increases.So, in general cycle period, shown in the A of Fig. 3, the delivery temperature Tda of compressor 27 is more much higher than the saturated condensation temperature Tdb of indoor heat exchanger 5.
But, if adopt the gas-liquid separator of prior art, perhaps its off-capacity, and because refrigeration cycle design or control inadequate reason etc., gas coolant takes place under the not enough condition in gas-liquid separator, then liquid coolant can become the unusual cycle, shown in the B of Fig. 3 from gas coolant outlet 15 is inhaled into into compressor 27.Under such condition, the delivery temperature Tdb of compressor 27 descends rapidly, causes the state lower than the saturated condensation temperature Tc of indoor heat exchanger 5.Under unusual like this state, condensation is gone out the liquid coolant of more amount in seal casinghousing 28 inside, liquid coolant can dilute lubricated necessary oil film, and wear-out failure just appears in compressor at short notice.And, also can cause the lubricating oil of seal casinghousing 28 to be discharged from, influence the performance of air conditioner greatly.
Referring to Fig. 4, shown the internal structure of gas-liquid separator 7.Gas-liquid separator 7, comprise chamber, the liquid coolant outlet 20 that communicates with the chamber bottom, the gas coolant outlet 15 that communicates with chamber top, and the gas-liquid refrigerant inlet tube 19 that communicates with chamber, gas coolant outlet 15 is provided with the gas coolant outlet opening 24 that communicates with chamber top, and gas coolant outlet 15 is provided with the float valve 21 that opens and closes this gas coolant outlet opening 24.
In order to reduce the frictional force between floating 22 and the gas refrigerant exit pipe 15, between floating 22 and gas refrigerant exit pipe 15, be provided with sleeve pipe 23.Sleeve pipe is fit to constitute with the low material of coefficient of frictions such as polytetrafluoroethylene (PTFE).
Referring to Fig. 5, when the cooling medium liquid in the gas-liquid separator 7 is looked like when reaching with floating 22 height that contacts, gradually, floating 22 buoyancy begins during greater than the power of spring 25 upwards floating, therefore the beginning of gas coolant outlet opening 24 is closed gradually, until closing fully.Otherwise behind the liquid refrigerants liquid level step-down, gas coolant outlet opening 24 is opened again gradually.
The refrigerant liquid level of gas-liquid separator 7 lower than floating 22 bottom surface during, can deliver to the gas coolant that in gas-liquid separator 7, takes place gas coolant outlet 15 in and discharge.But behind the bottom surface height of refrigerant liquid level than floating 22, the part of gas coolant outlet opening 24 is closed, the gas coolant that flows out to gas coolant outlet 15 tails off, along with after the refrigerant liquid level uprises, gas coolant outlet opening 24 is closed fully, stops the supply to gas coolant outlet 15.
Therefore, float valve 21 is equivalent to play a part optionally gas coolant to be delivered to the automatic valve of gas coolant outlet 15, can prevent that liquid coolant is injected into in the compressor 27, guarantee the reliability of compressor, guarantee gas coolant injection system reliability service, guaranteed to improve the effect of air conditioner performance.
In addition, as much as possible float valve 21 is designed to small-sized, buoyancy for maximum.At the gas coolant outlet 15 of the central part of float valve 21 configuration and sleeve pipe 23 as far as possible vertically, float valve 21 can not tilt like this, and gas coolant outlet opening 24 opening and closing reliable uprise.
When float valve 21 when the external diameter of gas coolant outlet 15 slides, wish to reduce its coefficient of friction each other.In the present embodiment, the sleeve pipe 23 of the low material of coefficient of friction is installed, exactly in order to make sliding up and down of float valve 21 more smooth and easy.In addition, gas coolant outlet opening 24 adopts symmetrical perforate as far as possible, so also is when being one-sided when its perforate, sleeve pipe 23 is act as one-sided, exist influence float valve 21 can not about the hidden danger of smooth and easy slip.
In gas-liquid separator 7, by being configured in float valve 21 on the gas coolant outlet 15, optionally gas coolant is delivered to the method for gas coolant outlet 15, not only have only above-mentioned disclosed formation, other structures such as all distortion are implemented all can.
For example, liquid level sensor by being provided in gas-liquid separator 7 etc. can be realized same function by switch valve.Therefore in the scope of summary of the present invention, structures such as all distortion etc. are implemented all can.And gas-liquid separator of the present invention also can be applied in the refrigerating machine in the refrigeration cycle of air-conditioning system in this paper explanation.
In sum, technology disclosed by the invention imports industry easily, and can carry out volume production, is applied on the production cause.
Claims (7)
1. gas-liquid separator, comprise chamber, the liquid coolant outlet (20) that communicates with the chamber bottom, the gas coolant outlet (15) that communicates with chamber top, and the gas-liquid refrigerant inlet tube (19) that communicates with chamber, it is characterized in that the gas coolant outlet is provided with the gas coolant outlet opening (24) that communicates with chamber top, the gas coolant outlet is provided with the float valve (21) that opens and closes this gas coolant outlet opening.
2. gas-liquid separator according to claim 1 is characterized in that described float valve (21) comprises spring (25) and floating (22) of sliding along the surface of gas coolant outlet (15), and spring is arranged between floating and the chamber inner wall.
3. gas-liquid separator according to claim 2 is characterized in that described floating (22) and spring (25) are set on the gas coolant outlet (15).
4. according to claim 2 or 3 described gas-liquid separators, it is characterized in that being provided with sleeve pipe (23) between described floating (22) and the gas refrigerant exit pipe (15).
5. gas-liquid separator according to claim 4 is characterized in that described gas coolant outlet (15) is provided with block (26), and floating (22) are arranged between block and the spring (25).
6. gas-liquid separator according to claim 5 is characterized in that the vertical or oblique setting of described gas coolant outlet (15).
7. gas-liquid separator according to claim 6 is characterized in that described gas coolant outlet opening (24) is symmetricly set on the gas coolant outlet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041177A CN101614459A (en) | 2009-07-11 | 2009-07-11 | Gas-liquid separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910041177A CN101614459A (en) | 2009-07-11 | 2009-07-11 | Gas-liquid separator |
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| Publication Number | Publication Date |
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| CN101614459A true CN101614459A (en) | 2009-12-30 |
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| CN200910041177A Pending CN101614459A (en) | 2009-07-11 | 2009-07-11 | Gas-liquid separator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103673436A (en) * | 2013-12-24 | 2014-03-26 | 上海交通大学 | Gas-liquid separator with oil return and liquid discharging functions |
| CN103884137A (en) * | 2014-02-28 | 2014-06-25 | 广东美的制冷设备有限公司 | Flash evaporator and air conditioner |
| CN104697249A (en) * | 2013-12-09 | 2015-06-10 | 马兴国 | Novel fluorine air cooler distributor |
| CN109489294A (en) * | 2018-11-19 | 2019-03-19 | 佛山市德天电器有限公司 | One kind having system increasing enthalpy Multifunctional oil separating device and its heat pump system |
| CN114152027A (en) * | 2021-11-16 | 2022-03-08 | 陈中浩 | Industrial water chilling unit |
-
2009
- 2009-07-11 CN CN200910041177A patent/CN101614459A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697249A (en) * | 2013-12-09 | 2015-06-10 | 马兴国 | Novel fluorine air cooler distributor |
| CN103673436A (en) * | 2013-12-24 | 2014-03-26 | 上海交通大学 | Gas-liquid separator with oil return and liquid discharging functions |
| CN103884137A (en) * | 2014-02-28 | 2014-06-25 | 广东美的制冷设备有限公司 | Flash evaporator and air conditioner |
| CN109489294A (en) * | 2018-11-19 | 2019-03-19 | 佛山市德天电器有限公司 | One kind having system increasing enthalpy Multifunctional oil separating device and its heat pump system |
| CN109489294B (en) * | 2018-11-19 | 2023-05-26 | 佛山市德天电器有限公司 | Multifunctional oil content device with system enthalpy increasing function and heat pump system thereof |
| CN114152027A (en) * | 2021-11-16 | 2022-03-08 | 陈中浩 | Industrial water chilling unit |
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Open date: 20091230 |