CN1292216C - Refrigerating unit of double-temperature refrigerator car - Google Patents
Refrigerating unit of double-temperature refrigerator car Download PDFInfo
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- CN1292216C CN1292216C CN 200510024924 CN200510024924A CN1292216C CN 1292216 C CN1292216 C CN 1292216C CN 200510024924 CN200510024924 CN 200510024924 CN 200510024924 A CN200510024924 A CN 200510024924A CN 1292216 C CN1292216 C CN 1292216C
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Abstract
The present invention relates to a refrigerating unit for a double temperature refrigerator car, which is provided with a refrigeration circuit and a defrosting circuit. The present invention comprises a two-stage compressor, a condenser, two evaporators with different evaporation temperature, a heat regenerator, a subcooler, two expansion valves, two gas-liquid separators, an oil separator and four magnetic valves, wherein the compressor can be provided with gas; a low pressure outlet of the heat regenerator is connected with an inlet of the gas intake gas-liquid separator by the second magnetic valve; an outlet of the gas intake gas-liquid separator is connected with a low pressure stage inlet of the compressor; the first magnetic valve is arranged between the input end of the heat regenerator and the output end of the subcooler; the second magnetic valve is arranged between the output end of the heat regenerator and the input end of the gas intake gas-liquid separator; the third magnetic valve is arranged between the input end of the high temperature expansion valve and the output end of the low temperature evaporator; the fourth magnetic valve is arranged between the positions, one position is positioned between the output end of the oil separator and the input end of the condenser, and the other is positioned between the input end of the low temperature evaporator and the output end of the low temperature expansion valve. Because the present invention adopts a one-pulling two-refrigerating system, the present invention greatly enhances economical efficiency and saves energy consumption.
Description
Technical field
What the present invention relates to is a kind of refrigeration plant that is used for refrigerator car, specifically is that a kind of double-temperature refrigerator is hidden the car refrigeration unit, belongs to refrigeration technology field.
Background technology
Along with growth in the living standard, no longer be single warm area to the refrigeration warm area of refrigerator car, to transport personnel a comfortable driving environment is provided in order to give, now requirement has been proposed also the driver's cabin air-conditioning.Existing refrigerator car mostly is the single cooler group, promptly be made up of a compressor, a condenser, an evaporimeter and some other auxiliary equipment, comprise: the compressor of the middle tonifying Qi of a twin-stage compression band, a condenser, two different evaporimeter, a regenerator, a subcooler, two expansion valves, two gas-liquid separators, an oil eliminator, four magnetic valves of evaporating temperature are formed.
This refrigeration unit can only be used for the refrigerator car of single temperature refrigeration, the refrigerator car that the double-temperature refrigerator that can't meet the demands is hidden.Large-scale refrigerator car can be provided with the independent system of two covers, and refrigeration and driver's cabin air-conditioning separate, but for prevailing gradually middle-size and small-size refrigerator car in the city, because the restriction of installing space can not be provided with the independent refrigeration system of two covers.Though now an also useful compressor drags the so-called one drag two system of two evaporimeters, but they mostly are at the rear side of A/C evaporator or high-temperature region evaporimeter an evaporating pressure regulating valve to be installed to realize two evaporating temperatures, because the throttling action of evaporating pressure regulating valve, the pressure of inspiration(Pi) of compressor is close with the pressure of cryogenic vaporizer, the efficient of whole unit is very low, generally speaking, when refrigerated storage temperature is-18 ℃, the COP of refrigeration unit is less than 1.0, and dragging air-conditioning simultaneously with such refrigeration unit is very uneconomic for the day by day nervous current society of the energy.
Find by prior art documents, Germany Bosch-Siemens Hausgerate Gmbh in China in 2000.10.26 proposed: " refrigeration machine " patent application, patent publication No. is: 1402825, application number is 00816410.X, promptly adopt a compressor to drag refrigeration and refrigerating evaporator simultaneously, though it has solved refrigerating evaporator when not working, the problem of lack of refrigerant during the refrigeration operation, but because refrigeration evaporator and refrigerating evaporator parallel connection, pressure-reducing valve is arranged behind refrigeration evaporator, total refrigerating efficiency of system is still very low, this is the intrinsic problem that the compressor of single stage compress drags two evaporimeters, be single stage compress compressor cannot solve.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of double-temperature refrigerator to hide the car refrigeration unit.Make it that two kinds of evaporating temperatures can be provided simultaneously, and can improve the one drag two refrigerator car refrigeration unit of air-conditioner efficiency.
The present invention is achieved by the following technical solutions, and the present invention has two loops: refrigerating circuit and defrost circuit.The present invention includes: the compressor of the middle tonifying Qi of a twin-stage compression band, oil eliminator, condenser, high temperature expansion valve, subcooler, high-temperature evaporator, the tonifying Qi gas-liquid separator, first, second, the 3rd, the four or four magnetic valve, regenerator, the low-temperature expansion valve, cryogenic vaporizer, the air inlet gas-liquid separator, the refrigerating circuit connected mode: compressor outlet links to each other with the oil eliminator import, cold-producing medium is behind oil eliminator, lubricating oil is back to compressor through oil return pipe, the oil eliminator refrigerant outlet links to each other with condenser inlet, condensator outlet is divided into two-way, in press circulation one tunnel to link to each other with the import of high temperature expansion valve, the outlet of high temperature expansion valve links to each other with the subcooler low pressure inlet, the subcooler low tension outlet links to each other with the high temperature evaporation import, the high-temperature evaporator outlet links to each other with the import of tonifying Qi gas-liquid separator, and the outlet of tonifying Qi gas-liquid separator links to each other with the hiigh pressure stage import of compressor; The low pressure recycle one tunnel of coming out from condenser links to each other with the high-pressure inlet of subcooler, the high-pressure outlet of subcooler links to each other with the high-pressure inlet of regenerator through first magnetic valve, the high-pressure outlet of regenerator with link to each other with the cryogenic vaporizer import through the low-temperature expansion valve, the cryogenic vaporizer outlet links to each other with the low pressure inlet of regenerator, the low tension outlet of regenerator links to each other through the import of second magnetic valve with the air inlet gas-liquid separator, the outlet of air inlet gas-liquid separator links to each other with the low-pressure stage import of compressor, between regenerator input and the subcooler output first magnetic valve is set, between regenerator output and the air inlet gas-liquid separator input second magnetic valve is set, between high temperature expansion valve input and the cryogenic vaporizer output the 3rd magnetic valve is set, between oil eliminator output and the condenser input and between cryogenic vaporizer input and the output of low-temperature expansion valve the 4th magnetic valve is set.
The connected mode of defrost circuit of the present invention is: the gaseous refrigerant pipeline links to each other with the import of cryogenic vaporizer through the 4th magnetic valve from the import of condenser, and the liquid refrigerant pipeline links to each other with the import of high temperature expansion valve through the 3rd magnetic valve from the cryogenic vaporizer outlet.
When system's refrigerating operaton, first, second magnetic valve is opened, the 3rd, the 4th closed electromagnetic valve; During Defrost operation, the 3rd, the 4th magnetic valve is opened, first, second closed electromagnetic valve; When the refrigeration indoor temperature reaches requirement, first closed electromagnetic valve.
The gaseous state high temperature refrigerant that comes out from compressor is after separating through oil eliminator, lubricating oil returns compressor through oil return pipe, gaseous refrigerant is condensed into high pressure liquid refrigerant through copper pipe to condenser, high pressure liquid refrigerant is divided into two-way after going out condenser, one the tunnel forces down warm two phase refrigerant in becoming after high temperature expansion valve, enter and enter high-temperature evaporator after subcooler and another road high pressure liquid refrigerant heat exchange and continue evaporation, go out to enter the compressor gas supplementing opening through gas-liquid separator behind the high-temperature evaporator and finish circulation; Enter from another road of high pressure liquid refrigerant that condenser comes out subcooler cross cold after magnetic valve to enter regenerator further cold excessively by the return-air of low-pressure stage compressor, become the two phase refrigerant of low-temp low-pressure then after the expansion valve throttling through low evaporating temperature, in cryogenic vaporizer, evaporate, become gaseous refrigerant, heat up after gas-liquid separator enters the compressor low-pressure stage through regenerator.
When system's Defrost operation, after the high-temperature gas cold-producing medium that comes out from compressor enters and is cooled into liquid state the cryogenic vaporizer, enter the high-temperature evaporator evaporation by the high temperature expansion valve throttling, enter the compressor hiigh pressure stage by the tonifying Qi gas-liquid separator again.
The effect of regulating the high-temperature region temperature is not only played in the comprehensive function of high-temperature evaporator and subcooler, and plays the effect of economizer, thereby can improve the refrigerating efficiency of system; The air intake duct regenerator can make the refrigerating efficiency of refrigeration system further improve.
The invention has the beneficial effects as follows: can significantly improve the efficient of one drag two refrigeration system, under air-conditioning unlatching situation, theoretical refrigerating efficiency can improve more than 60%, thereby the economy of one drag two refrigeration system is significantly improved, energy savings consumption.
Description of drawings
The efficient double-temperature refrigerator of Fig. 1 is hidden car refrigeration unit kind of refrigeration cycle schematic diagram
The specific embodiment
Below in conjunction with accompanying drawing following the description done in the concrete enforcement of efficient two warm refrigeration unit.
As shown in Figure 1, the present invention includes: compressor 1, oil eliminator 2, condenser 3, high temperature expansion valve 4, subcooler 5, high-temperature evaporator 6, tonifying Qi gas-liquid separator 7, first magnetic valve 8, second magnetic valve 13, the 3rd magnetic valve 14, the 4th magnetic valve 15 of the middle tonifying Qi of a twin-stage compression band, regenerator 9, low-temperature expansion valve 10, cryogenic vaporizer 11, air inlet gas-liquid separator 12.
The connected mode of refrigerating circuit is: compressor 1 outlet links to each other with oil eliminator 2 imports, cold-producing medium is behind oil eliminator 2, lubricating oil is back to compressor 1 through oil return pipe, oil eliminator 2 refrigerant outlets link to each other with condenser 3 imports, condenser 3 outlets are divided into two-way, in press circulation one tunnel to link to each other with the import of high temperature expansion valve 4, the outlet of high temperature expansion valve 4 links to each other with subcooler 5 low pressure inlet, subcooler 5 low tension outlets link to each other with high-temperature evaporator 6 imports, high-temperature evaporator 6 outlets link to each other with 7 imports of tonifying Qi gas-liquid separator, and 7 outlets of tonifying Qi gas-liquid separator link to each other with the hiigh pressure stage import of compressor 1; The low pressure recycle one tunnel of coming out from condenser 3 links to each other with the high-pressure inlet of subcooler 5, the high-pressure outlet of subcooler 5 links to each other with the high-pressure inlet of regenerator 9 through first magnetic valve 8, the high-pressure outlet of regenerator 9 with link to each other with cryogenic vaporizer 11 imports through low-temperature expansion valve 9, cryogenic vaporizer 11 outlets link to each other with the low pressure inlet of regenerator 9, the low tension outlet of regenerator 9 links to each other with the import of air inlet gas-liquid separator 12 through second magnetic valve 13, the outlet of air inlet gas-liquid separator 12 links to each other with the low-pressure stage import of compressor 1, between regenerator 9 inputs and subcooler 5 outputs first magnetic valve 8 is set, between regenerator 9 outputs and air inlet gas-liquid separator 12 inputs second magnetic valve 13 is set, between high temperature expansion valve 4 inputs and cryogenic vaporizer 11 outputs the 3rd magnetic valve 14 is set, between oil eliminator 2 outputs and condenser 3 inputs and between cryogenic vaporizer 11 inputs and 10 outputs of low-temperature expansion valve the 4th magnetic valve 15 is set.
The connected mode of defrost circuit is: the gaseous refrigerant pipeline links to each other with the import of cryogenic vaporizer 11 through the 4th magnetic valve 15 from the import of condenser 3, and the liquid refrigerant pipeline links to each other with the import of high temperature expansion valve 4 through the 3rd magnetic valve 14 from cryogenic vaporizer 11 outlets.
Claims (2)
1. a double-temperature refrigerator is hidden the car refrigeration unit, constitute by refrigerating circuit and defrost circuit, comprise: compressor (1), oil eliminator (2), condenser (3), high temperature expansion valve (4), subcooler (5), high-temperature evaporator (6), tonifying Qi gas-liquid separator (7), regenerator (9), low-temperature expansion valve (10), cryogenic vaporizer (11), air inlet gas-liquid separator (12), it is characterized in that, also comprise: first magnetic valve (8), second magnetic valve (13), the 3rd magnetic valve (14), the 4th magnetic valve (15), described compressor (1) is the compressor of tonifying Qi in the middle of the twin-stage compression band, the connected mode of refrigerating circuit is: compressor (1) outlet links to each other with oil eliminator (2) import, cold-producing medium is behind oil eliminator (2), lubricating oil is back to compressor (1) through oil return pipe, oil eliminator (2) refrigerant outlet links to each other with condenser (3) import, condenser (3) outlet is divided into two-way, in press circulation one tunnel to link to each other with the import of high temperature expansion valve (4), the outlet of high temperature expansion valve (4) links to each other with subcooler (5) low pressure inlet, subcooler (5) low tension outlet links to each other with high-temperature evaporator (6) import, high-temperature evaporator (6) outlet links to each other with tonifying Qi gas-liquid separator (7) import, tonifying Qi gas-liquid separator (7) outlet links to each other with the hiigh pressure stage import of compressor (1), the low pressure recycle one tunnel of coming out from condenser (3) links to each other with the high-pressure inlet of subcooler (5), the high-pressure outlet of subcooler (5) links to each other through the high-pressure inlet of first magnetic valve (8) with regenerator (9), the high-pressure outlet of regenerator (9) with link to each other with cryogenic vaporizer (11) import through low-temperature expansion valve (10), cryogenic vaporizer (11) outlet links to each other with the low pressure inlet of regenerator (9), the low tension outlet of regenerator (9) links to each other through the import of second magnetic valve (13) with air inlet gas-liquid separator (12), the outlet of air inlet gas-liquid separator (12) links to each other with the low-pressure stage import of compressor (1), between regenerator (9) input and subcooler (5) output first magnetic valve (8) is set, between regenerator (9) output and air inlet gas-liquid separator (12) input second magnetic valve (13) is set, between high temperature expansion valve (4) input and cryogenic vaporizer (11) output the 3rd magnetic valve (14) is set, between oil eliminator (2) output and condenser (3) input and between cryogenic vaporizer (11) input and low-temperature expansion valve (10) output the 4th magnetic valve (15) is set; The connected mode of defrost circuit is: the import with cryogenic vaporizer (11) links to each other the gaseous refrigerant pipeline through the 4th magnetic valve (15) from the import of condenser (3), and the liquid refrigerant pipeline links to each other through the import of the 3rd magnetic valve (14) with high temperature expansion valve (4) from cryogenic vaporizer (11) outlet.
2. double-temperature refrigerator according to claim 1 is hidden the car refrigeration unit, it is characterized in that, has a subcooler (5) behind the condenser (3), between subcooler (5) back and the cryogenic vaporizer (11) regenerator (9) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024924 CN1292216C (en) | 2005-04-07 | 2005-04-07 | Refrigerating unit of double-temperature refrigerator car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024924 CN1292216C (en) | 2005-04-07 | 2005-04-07 | Refrigerating unit of double-temperature refrigerator car |
Publications (2)
| Publication Number | Publication Date |
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| CN1667331A CN1667331A (en) | 2005-09-14 |
| CN1292216C true CN1292216C (en) | 2006-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510024924 Expired - Fee Related CN1292216C (en) | 2005-04-07 | 2005-04-07 | Refrigerating unit of double-temperature refrigerator car |
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| CN (1) | CN1292216C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445016A (en) * | 2011-11-16 | 2012-05-09 | 广州市设计院 | Method for preparing large-temperature difference chilled water in single machine two-stage compression manner and special water chilling unit |
| CN102506511A (en) * | 2011-11-17 | 2012-06-20 | 广州市设计院 | Method and special water chilling unit for manufacturing chilled water with large temperature difference in stand-alone three-stage compression manner |
| CN106091547A (en) * | 2016-06-16 | 2016-11-09 | 中原工学院 | The solar energy jetting of dual temperature refrigerator car and compression integrated refrigeration system |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8037704B2 (en) * | 2008-05-22 | 2011-10-18 | Thermo King Corporation | Distributed refrigeration system |
| CN102745040B (en) * | 2012-07-16 | 2014-07-16 | 苏州博阳制冷设备有限公司 | Direct-current driven freezing and refrigerating car |
| CN104736947B (en) * | 2012-09-28 | 2019-01-18 | 伊莱克斯家用产品公司 | Refrigerator and the method for controlling refrigerator |
| CN102927718B (en) * | 2012-11-05 | 2014-11-26 | 北京工业大学 | Novel double-effect dual-temperature high temperature heat pump device |
| CN104110909B (en) * | 2014-08-02 | 2016-02-24 | 山东威高集团医用高分子制品股份有限公司 | Flat fast-freezer refrigerating plant |
| CN105020924A (en) * | 2015-07-30 | 2015-11-04 | 天津大学 | Air source enhanced vapor injection heat pump system |
| CN105402921A (en) * | 2015-12-25 | 2016-03-16 | 天津市傲景农业科技发展有限公司 | Refrigerating system used for cold-chain logistics vehicles |
| CN109532388B (en) * | 2018-11-26 | 2022-02-01 | 朱士政 | Vehicle-mounted refrigerator central control system for new energy |
| CN110594920A (en) * | 2019-10-08 | 2019-12-20 | 南京晶华智能科技有限公司 | Air conditioner, heat pump system, heat pump control method, device and storage medium |
| CN111121342B (en) * | 2019-12-31 | 2021-11-05 | 青岛海信日立空调系统有限公司 | Heat pump system |
| CN111998569A (en) * | 2020-09-10 | 2020-11-27 | 上海海洋大学 | Refrigerated container refrigeration system capable of preventing freezing of container door |
-
2005
- 2005-04-07 CN CN 200510024924 patent/CN1292216C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445016A (en) * | 2011-11-16 | 2012-05-09 | 广州市设计院 | Method for preparing large-temperature difference chilled water in single machine two-stage compression manner and special water chilling unit |
| CN102506511A (en) * | 2011-11-17 | 2012-06-20 | 广州市设计院 | Method and special water chilling unit for manufacturing chilled water with large temperature difference in stand-alone three-stage compression manner |
| CN106091547A (en) * | 2016-06-16 | 2016-11-09 | 中原工学院 | The solar energy jetting of dual temperature refrigerator car and compression integrated refrigeration system |
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| Publication number | Publication date |
|---|---|
| CN1667331A (en) | 2005-09-14 |
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Granted publication date: 20061227 Termination date: 20130407 |