CN206377877U - A kind of twin-stage throttling two stage compression refrigeration system with qi leel - Google Patents
A kind of twin-stage throttling two stage compression refrigeration system with qi leel Download PDFInfo
- Publication number
- CN206377877U CN206377877U CN201621419948.1U CN201621419948U CN206377877U CN 206377877 U CN206377877 U CN 206377877U CN 201621419948 U CN201621419948 U CN 201621419948U CN 206377877 U CN206377877 U CN 206377877U
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- gas
- outlet
- liquid separator
- regenerator
- stage
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Abstract
The utility model discloses a kind of twin-stage throttling two stage compression refrigeration system with qi leel.The high pressure stage compressor outlet of the utility model refrigeration system is connected with condenser inlet, condensator outlet is connected with sub-cooling coil, sub-cooling coil outlet is connected after first throttle valve with the first gas-liquid separator, first gas-liquid separator gas phase interface is connected with regenerator entrance, first gas-liquid separator liquid-phase outlet is connected after second throttle with the second gas-liquid separator, second gas-liquid separator liquid-phase outlet is connected with evaporator inlet, evaporator outlet is connected after merging with the second gas-liquid separator gaseous phase outlet with low-pressure stage suction port of compressor, low pressure stage compressor outlet is connected after merging with regenerator outlet with the high pressure stage compressor, regenerator exports the connecting bypass pipe between the second gas-liquid separator gaseous phase outlet, bypass pipe is equipped with pressure-regulating valve, the sub-cooling coil is placed in the regenerator.The utility model improves the problem of low-pressure stage suction pressure of compressor is low by pressure difference bypass regulator valve.
Description
Technical field
The utility model is related to a kind of low temperature two stages of compression formula refrigeration system, belongs to refrigerating field.
Background technology
Single-stage compression freezes most low energy to subzero 40 degree, is used in the range of subzero 40 degree to subzero 60 degree
The mode refrigerating efficiency of two stages of compression is high compared with overlapping, and double-stage compressive refrigerating system includes one-level throttling compressibility and two-stage
Throttle compressibility, and the gas-liquid mixed refrigerant after being throttled for common double-stage compressive refrigerating system enters evaporation simultaneously
Device, reduces the contact area of liquid refrigerant and evaporator, therefore with less heat exchange property, the refrigerant after throttling is again
If can be caused damage containing gaseous refrigerant after secondary throttling, and often under lower temperature, the pressure of inspiration(Pi) ratio of low-pressure machine compressor
It is relatively low, higher delivery temperature is caused, therefore a kind of twin-stage section with qi leel of the utility model is proposed in the case of improvement is above-mentioned
Flow two stage compression refrigeration system.
Utility model content
The purpose of this utility model is to be directed to technological deficiency present in prior art, and provides a kind of twin-stage with qi leel
Throttled two stage compression refrigeration system, and the high-performance of system is improved using qi leel and bypass pressure-difference valve.
To realize that the technical scheme that the purpose of this utility model is used is：
It is a kind of with qi leel twin-stage throttling two stage compression refrigeration system, the refrigeration system high pressure stage compressor outlet with
Condenser inlet is connected, and the condensator outlet be connected with sub-cooling coil, the sub-cooling coil export after first throttle valve and
First gas-liquid separator is connected, and the first gas-liquid separator gas phase interface is connected with regenerator entrance, first gas-liquid point
It is connected from device liquid-phase outlet after second throttle with the second gas-liquid separator, the second gas-liquid separator liquid-phase outlet is with steaming
The connection of device entrance is sent out, the evaporator outlet enters after merging with the second gas-liquid separator gaseous phase outlet with low-pressure stage compressor
Mouth connection, the low pressure stage compressor outlet is connected after merging with regenerator outlet with the high pressure stage compressor, described
Regenerator exports the connecting bypass pipe between the second gas-liquid separator gaseous phase outlet, and bypass pipe is equipped with pressure-regulating valve, institute
Sub-cooling coil is stated to be placed in the regenerator.
Compared with prior art, the beneficial effects of the utility model are：
A kind of twin-stage throttling two stage compression refrigeration system with qi leel of the present utility model is freezed with existing two stages of compression formula
Technology is compared, and is had the characteristics that：
1st, secondary restriction loss is reduced after throttling for the first time using gas-liquid separator.
2nd, the air-liquid after throttling is separated using gas-liquid separator after second of throttling, it is ensured that enter complete in evaporator
For liquid, the heat exchange property of evaporator is improved.
3rd, the problem of low-pressure stage suction pressure of compressor is low is improved by pressure difference bypass regulator valve.
Brief description of the drawings
Fig. 1 show a kind of schematic diagram of the twin-stage throttling two stage compression refrigeration system with qi leel of the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
It is a kind of with qi leel twin-stage throttling two stage compression refrigeration system, as shown in figure 1, high pressure stage compressor 1 outlet with
The entrance of condenser 4 is connected, and the outlet of condenser 4 is connected with sub-cooling coil 6, and the sub-cooling coil 6 is exported through first throttle valve 7
It is connected afterwards with the first gas-liquid separator 8, the gas phase interface of the first gas-liquid separator 8 is connected with the entrance of regenerator 5, described first
The liquid-phase outlet of gas-liquid separator 8 is connected after second throttle 9 with the second gas-liquid separator 10, second gas-liquid separator 10
Liquid-phase outlet is connected with the entrance of evaporator 11, and the outlet of evaporator 11 merges with the gaseous phase outlet of the second gas-liquid separator 10
Be connected afterwards with the entrance of low-pressure stage compressor 2, the low-pressure stage compressor 2 outlet is exported with the regenerator 5 merge after with it is described
The entrance of high pressure stage compressor 1 is connected, and the regenerator 5 is exported connects other between the gaseous phase outlet of the second gas-liquid separator 10
Siphunculus, bypass pipe is equipped with pressure-regulating valve 3, and the sub-cooling coil 6 is placed in the regenerator 5.
Condensed liquid can reduce restriction loss after the supercooling of regenerator 5, and the liquid after throttling for the first time is passed through
Pressure is lower after second of throttling, and liquid refrigerant fully enters evaporator 11 after the gas-liquid separation after throttling, it is ensured that evaporator
11 high efficient heat exchanging performance, the pressure of inspiration(Pi) that pressure-regulating valve 3 ensures low-pressure stage compressor 2 can be adjusted when evaporating pressure is too low
Power, improves the problem of pressure of inspiration(Pi) of low pressure compressor 2 is low.
Described above is only preferred embodiment of the present utility model, it is noted that for the general of the art
For logical technical staff, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these change
Enter and retouch and also should be regarded as protection domain of the present utility model.
Claims (1)
1. a kind of twin-stage throttling two stage compression refrigeration system with qi leel, it is characterised in that the hiigh pressure stage pressure of the refrigeration system
The outlet of contracting machine is connected with condenser inlet, and the condensator outlet is connected with sub-cooling coil, and the sub-cooling coil outlet is through first
It is connected after choke valve with the first gas-liquid separator, the first gas-liquid separator gas phase interface is connected with regenerator entrance, described
First gas-liquid separator liquid-phase outlet is connected after second throttle with the second gas-liquid separator, the second gas-liquid separator liquid
Mutually outlet be connected with evaporator inlet, the evaporator outlet merge with the second gas-liquid separator gaseous phase outlet after with low pressure
The connection of level suction port of compressor, the low pressure stage compressor outlet and the regenerator are exported merge after with the high pressure stage compressor
Connection, connecting bypass pipe between the regenerator outlet and the second gas-liquid separator gaseous phase outlet, bypass pipe is equipped with pressure
Regulating valve, the sub-cooling coil is placed in the regenerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621419948.1U CN206377877U (en) | 2016-12-23 | 2016-12-23 | A kind of twin-stage throttling two stage compression refrigeration system with qi leel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621419948.1U CN206377877U (en) | 2016-12-23 | 2016-12-23 | A kind of twin-stage throttling two stage compression refrigeration system with qi leel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206377877U true CN206377877U (en) | 2017-08-04 |
Family
ID=59407234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621419948.1U Expired - Fee Related CN206377877U (en) | 2016-12-23 | 2016-12-23 | A kind of twin-stage throttling two stage compression refrigeration system with qi leel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206377877U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413638A (en) * | 2018-03-16 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of auto-cascading refrigeration system with Two-stage Compression |
-
2016
- 2016-12-23 CN CN201621419948.1U patent/CN206377877U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108413638A (en) * | 2018-03-16 | 2018-08-17 | 珠海格力电器股份有限公司 | A kind of auto-cascading refrigeration system with Two-stage Compression |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170804 Termination date: 20171223 |