CN103673424A - Refrigerating system and air conditioning system with same - Google Patents
Refrigerating system and air conditioning system with same Download PDFInfo
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- CN103673424A CN103673424A CN201210345311.2A CN201210345311A CN103673424A CN 103673424 A CN103673424 A CN 103673424A CN 201210345311 A CN201210345311 A CN 201210345311A CN 103673424 A CN103673424 A CN 103673424A
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Abstract
The invention provides a refrigerating system and an air conditioning system with the same, wherein the refrigerating system comprises: the refrigeration main loop comprises a gas-liquid separator, a compressor, a four-way reversing valve, an outdoor heat exchanger, a first capillary tube and an indoor heat exchanger which are sequentially connected through a refrigeration pipeline; and the spray cooling loop comprises a spray capillary tube and a valve which are sequentially connected, the first end of the spray cooling loop is connected between the first end of the first capillary tube and the indoor heat exchanger, and the second end of the spray cooling loop is connected on a pipeline between the four-way reversing valve and the gas-liquid separator or connected on the gas-liquid separator. The invention effectively solves the problems of overhigh exhaust temperature of the compressor of the refrigeration system and overlong length of the liquid spraying capillary tube in the prior art.
Description
Technical field
The present invention relates to Technology of Compressor Refrigeration field, in particular to a kind of refrigeration system and there is its air-conditioning system.
Background technology
In the air-conditioning refrigeration system of prior art, for high-temperature refrigeration or low-temperature heating, exist compressor pressure ratio excessive, excessive discharge temperature problem, the general liquid discharging method that adopts solves the too high problem of compressor exhaust temperature at present, as shown in Figure 1, from outdoor heat exchanger 120 ', flow out liquid refrigerant, operative liquid cold-producing medium is sprayed onto compressor 100 ' air entry through restricting element 150 ', after mixing with the superheated refrigerant of indoor heat exchanger 180 ' outlet, enter compressor 100 ' air entry, thereby overheated cold-producing medium enthalpy is reduced and effectively reduced compressor exhaust temperature, in hydrojet process, spouting liquid is very obvious on systematic function impact, too much hydrojet can cause systematic function significantly to decline, so spouting liquid should be controlled in 5%, under general condition, adopt conventional diameter capillary to carry out Decompression Controlling spouting liquid, but because decompression needs, capillary need to be longer length just can reach standard, greatly improved cost, and the scope of application of long hydrojet capillary other the low profile thermal pump air conditioner system for some of length is smaller.
Summary of the invention
The present invention aims to provide a kind of refrigeration system and has its air-conditioning system, to solve refrigeration system compressor excessive discharge temperature and the long problem of hydrojet capillary pipe length in prior art.
To achieve these goals, according to an aspect of the present invention, a kind of refrigeration system is provided, comprise: refrigeration major loop, comprise the gas-liquid separator, compressor, four-way change-over valve, outdoor heat exchanger, the first capillary and the indoor heat exchanger that by refrigeration pipe, connect successively, the first interface of four-way change-over valve is communicated with the outlet of compressor, the second interface is communicated with outdoor heat exchanger, the 3rd interface is communicated with gas-liquid separator and the 4th interface is communicated with indoor heat exchanger, the first first end capillaceous near outdoor heat exchanger, the second end near indoor heat exchanger; Liquid injection cooling loop, comprise and connect successively hydrojet capillary and the valve arranging, the first end in Liquid injection cooling loop is connected between the first first end capillaceous and indoor heat exchanger, and second end in Liquid injection cooling loop is connected on the 3rd interface of four-way change-over valve and the pipeline between gas-liquid separator or is connected on gas-liquid separator.
Further, be also provided with the second capillary between the first capillary and indoor heat exchanger, the first end in Liquid injection cooling loop is connected between the first first end capillaceous and the second capillary.
Further, refrigeration system is also provided with the auxiliary piping being connected with the second capillary paralleling, is provided with check valve on auxiliary piping.
Further, the first end in Liquid injection cooling loop is connected to first the second end capillaceous.
Further, the first end in Liquid injection cooling loop is connected to the centre position between the first first end capillaceous and first the second end capillaceous.
Further, the first capillary comprises the first pipeline section and the second pipeline section, and refrigeration system also comprises flash evaporation, flash evaporation has feed tube, drain pipe and blowdown pipe, the first pipeline section is communicated with feed tube, and the second pipeline section is communicated with drain pipe, and the first end in Liquid injection cooling loop is communicated with blowdown pipe.
Further, on blowdown pipe, be provided with and be positioned at the enclosure interior of flash evaporation the spray hole of close housing bottom.
According to a further aspect in the invention, provide a kind of air-conditioning system, comprised above-mentioned refrigeration system.
Apply technical scheme of the present invention, refrigeration system comprises: refrigeration major loop, comprise the gas-liquid separator, compressor, four-way change-over valve, outdoor heat exchanger, the first capillary and the indoor heat exchanger that by refrigeration pipe, connect successively, the first interface of four-way change-over valve is communicated with the outlet of compressor, the second interface is communicated with outdoor heat exchanger, the 3rd interface is communicated with gas-liquid separator and the 4th interface is communicated with indoor heat exchanger, the first first end capillaceous near outdoor heat exchanger, the second end near indoor heat exchanger; Liquid injection cooling loop, comprise and connect successively hydrojet capillary and the valve arranging, the first end in Liquid injection cooling loop is connected between the first first end capillaceous and indoor heat exchanger, and second end in Liquid injection cooling loop is connected on the 3rd interface of four-way change-over valve and the pipeline between gas-liquid separator or is connected on gas-liquid separator.In refrigeration system, after outdoor heat exchanger condensation, become the liquid refrigerant of cryogenic high pressure, after the first step-down capillaceous, a liquid refrigerant part flows into Liquid injection cooling loop, make like this hydrojet inlet pressure capillaceous greatly reduce, for decompression hydrojet capillary can shorten length, and then saved cost, and effectively improved compressor and by bypass circulation, carried out the practicality of hydrojet cooling, and liquid refrigerant enters the air entry of compressor after mixing with the superheated refrigerant of indoor heat exchanger outlet from hydrojet capillary flows out, thereby overheated cold-producing medium enthalpy is reduced and effectively reduced compressor exhaust temperature.
Accompanying drawing explanation
The Figure of description that forms the application's a part is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the schematic diagram of refrigeration system in prior art;
Fig. 2 shows the schematic diagram of the first embodiment of refrigeration system of the present invention;
Fig. 3 shows the schematic diagram of the second embodiment of refrigeration system of the present invention;
Fig. 4 shows the connection diagram of flash evaporation of the refrigeration system of Fig. 3;
Fig. 5 shows the structural representation of the 3rd embodiment of refrigeration system of the present invention;
Fig. 6 shows the structural representation of the 4th embodiment of refrigeration system of the present invention.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
According to the first embodiment of refrigeration system provided by the invention, referring to Fig. 2, refrigeration system comprises refrigeration major loop and Liquid injection cooling loop, refrigeration major loop comprises the gas-liquid separator 190 connecting successively by refrigeration pipe, compressor 100, four-way change-over valve 110, outdoor heat exchanger 120, the first capillary 130, indoor heat exchanger 180, the first interface of four-way change-over valve 110 is communicated with the outlet of compressor 100, the second interface is communicated with outdoor heat exchanger 120, the 3rd interface is communicated with gas-liquid separator 190 and the 4th interface is communicated with indoor heat exchanger 180, the first end of the first capillary 130 is near outdoor heat exchanger 120, the second end is near indoor heat exchanger 180, Liquid injection cooling loop comprises hydrojet capillary 150 and the valve 160 that connects successively setting, the first end in Liquid injection cooling loop is connected to the centre position between the first end of the first capillary 130 and the second end of the first capillary 130, second end in Liquid injection cooling loop is connected on the 3rd interface and the pipeline between gas-liquid separator 190 of four-way change-over valve 110.Wherein, the first end of the first capillary 130 is that a point, the second end in Fig. 2 are that c point and intermediate position in Fig. 2 is the b point in Fig. 2.
In refrigeration system, after outdoor heat exchanger 120 condensations, become the liquid refrigerant of cryogenic high pressure, after the step-down of the first capillary 130, a liquid refrigerant part flows into Liquid injection cooling loop, make like this hydrojet inlet pressure capillaceous greatly reduce, for decompression hydrojet capillary can shorten length, and then saved cost, and effectively improved compressor and by bypass circulation, carried out the practicality of hydrojet cooling, increased the hydrojet scope of application capillaceous, and liquid refrigerant enters the air entry of compressor after mixing with the superheated refrigerant of indoor heat exchanger outlet from hydrojet capillary flows out, thereby overheated cold-producing medium enthalpy is reduced and effectively reduced compressor exhaust temperature.
Between the first capillary 130 and indoor heat exchanger 180, be also provided with the second capillary 140, the first end in Liquid injection cooling loop is connected between the first end and the second capillary 140 of the first capillary 130.Refrigeration system is also provided with the auxiliary piping being connected in parallel with the second capillary 140, is provided with check valve 170 on auxiliary piping.
The operational process of the refrigeration system of the present embodiment is as follows:
During cooling system operation, the gaseous refrigerant of HTHP is discharged from compressor 100, after entering outdoor heat exchanger 120 condensations, four-way change-over valve 110 becomes the liquid refrigerant of cryogenic high pressure, through the first capillary 130 partial throttlings, wherein main road cold-producing medium continues through check valve 170, to enter indoor heat exchanger 180 through the first capillary 130 throttlings after, and the bypass cold-producing medium that wherein bypass has certain mass dryness fraction enters the superheated refrigerant exporting with indoor heat exchanger 180 through valve 160 after 150 throttlings of hydrojet capillary and enters gas-liquid separator 190 after mixing and sucked by compressor.
During system heating operation, the gaseous refrigerant of HTHP is discharged from compressor 100, after entering indoor heat exchanger 180 condensations, four-way change-over valve 110 becomes the liquid refrigerant of cryogenic high pressure, after the second capillary 140, enter again the first capillary 130 throttlings, now valve 160 is closed, low-temperature low-pressure refrigerant after throttling enters outdoor heat exchanger 120 evaporations, after entering gas-liquid separator 190 after four-way change-over valve 110, by compressor, is sucked.
In order further illustrating, to reduce the beneficial effect that hydrojet inlet pressure capillaceous can effectively shorten hydrojet capillary pipe length, the experimental data of following form to be provided, the data of the first embodiment that this experimental data is refrigeration system, specific as follows:
According to the data of form, can find out, less its capillary pipe length of hydrojet capillary inlet pressure is less under the same conditions, the hydrojet capillary that length is less like this can meet more air-conditioning or the heat pump of polytypic to be used, and has improved compressor and by bypass circulation, has carried out the practicality of hydrojet cooling.
The present invention also provides the second embodiment of refrigeration system, specifically referring to Fig. 3 and Fig. 4, refrigeration system comprises refrigeration major loop and Liquid injection cooling loop, the parts in parts in major loop and Liquid injection cooling loop of wherein freezing are all identical with the refrigeration system of the first embodiment, the difference of refrigeration system in the present embodiment and the first embodiment is only, the first capillary 130 comprises the first pipeline section 131 and the second pipeline section 132, refrigeration system also comprises flash evaporation 200, flash evaporation 200 has feed tube 210, drain pipe 220 and blowdown pipe 230, the first pipeline section 131 is communicated with feed tube 210, the second pipeline section 132 is communicated with drain pipe 220, the first end in Liquid injection cooling loop is communicated with blowdown pipe 230.On blowdown pipe 230, be provided with spray hole 231, spray hole 231 is positioned at enclosure interior the close housing bottom of flash evaporation 200.Flash evaporation function is the gas-liquid two-phase cold-producing medium after throttling separated, thereby reduces the pressure drop that indoor heat exchanger 180 import mass dryness fractions reduce indoor heat exchanger 180, improves evaporimeter shunting uniformity simultaneously, improves systematic function.The technique effect of the refrigeration system of the present embodiment is identical with the technique effect of the first embodiment, repeats no more herein.
The present invention also provides the 3rd embodiment of refrigeration system, refrigeration system comprises refrigeration major loop and Liquid injection cooling loop, the parts in parts in major loop and Liquid injection cooling loop of wherein freezing are all identical with the refrigeration system of the first embodiment, the difference of refrigeration system in the present embodiment and the first embodiment is only, the first end in Liquid injection cooling loop is connected to the second end of the first capillary 130, the second end is connected on the 3rd interface and the pipeline between gas-liquid separator 190 of four-way change-over valve 110, the first end of the first capillary 130 is a point in Fig. 5, the second end is the c point in Fig. 5.The technique effect of the refrigeration system of the present embodiment is identical with the technique effect of the first embodiment, repeats no more herein.
The present invention also provides the 4th embodiment of refrigeration system, refrigeration system comprises refrigeration major loop and Liquid injection cooling loop, the parts in parts in major loop and Liquid injection cooling loop of wherein freezing are all identical with the refrigeration system of the first embodiment, specifically referring to Fig. 6, the difference of refrigeration system in the present embodiment and the first embodiment is only, the first end in Liquid injection cooling loop is connected to the centre position between the first end of the first capillary 130 and the second end of the first capillary 130, the second end is connected on gas-liquid separator 190, on gas-liquid separator 190, be provided with by-pass port, second end in Liquid injection cooling loop is connected on by-pass port Liquid injection cooling loop is communicated with gas-liquid separator 190.The technique effect of the refrigeration system of the present embodiment is identical with the technique effect of the first embodiment, repeats no more herein.
The present invention also provides the embodiment of air-conditioner, and the air-conditioner of the present embodiment comprises the refrigeration system of above-described embodiment, and the hydrojet capillary pipe length of the air-conditioner of the present embodiment is shorter, has saved the cost that hydrojet capillary brings.
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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a refrigeration system, comprising:
Refrigeration major loop, comprise the gas-liquid separator (190) connecting successively by refrigeration pipe, compressor (100), four-way change-over valve (110), outdoor heat exchanger (120), the first capillary (130) and indoor heat exchanger (180), the first interface of described four-way change-over valve (110) is communicated with the outlet of described compressor (100), the second interface is communicated with described outdoor heat exchanger (120), the 3rd interface is communicated with described gas-liquid separator (190) and the 4th interface is communicated with indoor heat exchanger (180), the first end of described the first capillary (130) is near described outdoor heat exchanger (120), the second end is near described indoor heat exchanger (180),
Liquid injection cooling loop, comprises and connects successively hydrojet capillary (150) and the valve (160) arranging,
It is characterized in that, the first end in described Liquid injection cooling loop is connected between the first end and described indoor heat exchanger (180) of described the first capillary (130), and second end in described Liquid injection cooling loop is connected on the 3rd interface of described four-way change-over valve (110) and the pipeline between described gas-liquid separator (190) or is connected on described gas-liquid separator (190).
2. refrigeration system according to claim 1, it is characterized in that, between described the first capillary (130) and described indoor heat exchanger (180), be also provided with the second capillary (140), the first end in described Liquid injection cooling loop is connected between the first end and described the second capillary (140) of described the first capillary (130).
3. refrigeration system according to claim 2, is characterized in that, described refrigeration system is also provided with the auxiliary piping being connected in parallel with described the second capillary (140), is provided with check valve (170) on described auxiliary piping.
4. according to the refrigeration system described in claims 1 to 3 any one, it is characterized in that, the first end in described Liquid injection cooling loop is connected to the second end of described the first capillary (130).
5. according to the refrigeration system described in claims 1 to 3 any one, it is characterized in that, the first end in described Liquid injection cooling loop is connected to the centre position between the first end of described the first capillary (130) and the second end of described the first capillary (130).
6. refrigeration system according to claim 5, it is characterized in that, described the first capillary (130) comprises the first pipeline section (131) and the second pipeline section (132), described refrigeration system also comprises flash evaporation (200), described flash evaporation (200) has feed tube (210), drain pipe (220) and blowdown pipe (230), described the first pipeline section (131) is communicated with described feed tube (210), described the second pipeline section (132) is communicated with described drain pipe (220), and the first end in described Liquid injection cooling loop is communicated with described blowdown pipe (230).
7. refrigeration system according to claim 6, is characterized in that, is provided with and is positioned at the enclosure interior of described flash evaporation (200) the spray hole (231) of close housing bottom on described blowdown pipe (230).
8. an air-conditioning system, comprises refrigeration system, it is characterized in that, described refrigeration system is the refrigeration system described in any one in claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210345311.2A CN103673424A (en) | 2012-09-17 | 2012-09-17 | Refrigerating system and air conditioning system with same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210345311.2A CN103673424A (en) | 2012-09-17 | 2012-09-17 | Refrigerating system and air conditioning system with same |
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Cited By (8)
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| CN104180439A (en) * | 2014-08-28 | 2014-12-03 | 广东申菱空调设备有限公司 | High-temperature adjustable temperature dehumidifier and control method thereof |
| CN105928277A (en) * | 2016-05-06 | 2016-09-07 | 广东美的暖通设备有限公司 | Control method and system of electromagnetic valve for air conditioner liquid injecting cooling and air conditioner |
| CN106595142A (en) * | 2017-02-06 | 2017-04-26 | 刘勇 | Expansion device and CO2 heat pump with gas injection enthalpy loop for extreme cold weather |
| CN106705228A (en) * | 2017-01-10 | 2017-05-24 | 美的集团股份有限公司 | Air conditioner system and controlling method |
| CN107356021A (en) * | 2016-05-10 | 2017-11-17 | 比亚迪股份有限公司 | Heat pump type air conditioning system and electric automobile |
| CN111023613A (en) * | 2019-11-27 | 2020-04-17 | 合肥通用制冷设备有限公司 | Accurate temperature control refrigerating system |
| CN112361669A (en) * | 2020-11-26 | 2021-02-12 | 珠海格力电器股份有限公司 | Multi-split system and control method thereof |
| CN112378110A (en) * | 2020-12-03 | 2021-02-19 | 山西维斯塔清洁能源股份有限公司 | Energy-saving system for improving working efficiency of natural energy heat utilization system |
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| CN112361669B (en) * | 2020-11-26 | 2023-07-28 | 珠海格力电器股份有限公司 | Multi-split system and control method thereof |
| CN112378110A (en) * | 2020-12-03 | 2021-02-19 | 山西维斯塔清洁能源股份有限公司 | Energy-saving system for improving working efficiency of natural energy heat utilization system |
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Application publication date: 20140326 |