CN202869066U - Efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions - Google Patents
Efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions Download PDFInfo
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- CN202869066U CN202869066U CN 201220550614 CN201220550614U CN202869066U CN 202869066 U CN202869066 U CN 202869066U CN 201220550614 CN201220550614 CN 201220550614 CN 201220550614 U CN201220550614 U CN 201220550614U CN 202869066 U CN202869066 U CN 202869066U
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Abstract
The utility model discloses an efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions. The unit comprises two refrigeration circulation systems including a high-temperature-stage system and a low-temperature-stage system, wherein high-temperature-stage system comprises a high-temperature-stage compressor, an oil separator, an oil cooler, a condenser, an economizer and a condensation evaporator; and the low-temperature-stage system comprises a low-temperature-stage compressor, an expansion tank, a low-temperature-stage oil separator, a low-temperature-stage oil cooler, a heat regenerator, a precooler, a condensation evaporator and a low-temperature-stage evaporator. All the devices constitute the whole unit. According to the unit, great improvement and innovation are carried out on the basis of a common unit, the economizer, the precooler, the heat regenerator, a gas absorbing temperature adjustment valve and other devices are increased, a well-equipped control system is arranged, stability of operation of the unit is effectively improved, energy efficiency ratio is greatly improved, and the purpose of saving energy for a user and a country is achieved.
Description
Technical field
The utility model relates to a kind of deep cooling unit, specifically double base overlapping deep cooling unit.
Background technology
At present, if wanting to guarantee unit energy works in high efficiency situation, the evaporating temperature of the operation of the freezing unit of conventional Two-stage Compression is substantially between-30 ℃ to-60 ℃, and when evaporating temperature reaches-50 ℃ to-60 ℃, the efficient of Two-stage Compression unit is just very low, and cost is higher, when evaporating temperature will reach-60 ℃ in-90 ℃ the scope time, the Two-stage Compression unit is substantially inapplicable, therefore, the overlapping units that adopt when generally temperature is in-60 ℃ to-90 ℃ scope more, temperature is between-50 ℃ to-60 ℃ the time, and overlapping unit and Two-stage Compression unit can be suitable for.Although and conventional overlapping unit is higher than Two-stage Compression unit in the efficient of this operating mode, or some is unsatisfactory, also has the space that promotes, and along with the variation of operating mode, the medium temperature amplitude of variation is larger, is unfavorable for stable operation of unit when moving simultaneously.
Summary of the invention
The purpose of this utility model is the deficiency that exists for prior art, provide a kind of can improve unit operation stability and overall efficiency with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace.
For realizing above-mentioned utility model purpose, the technical solution adopted in the utility model is a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace, comprise two cooling cycle systems, be respectively high temperature level system and low temperature level system, the oil eliminator that the high temperature level system comprises the high temperature stage compressor, link to each other with the high temperature stage compressor and oil cooler, the condenser that links to each other with oil eliminator, the economizer that links to each other with condenser and the condenser/evaporator that all links to each other with high temperature stage compressor and economizer; The low temperature level system comprises the low temperature stage compressor, expansion drum, low temperature level oil eliminator, low temperature level oil cooler and regenerator, the forecooler, the condenser/evaporator that links to each other with forecooler that link to each other with low temperature level oil eliminator that links to each other respectively with the low temperature stage compressor and the low temperature level evaporimeter that links to each other with regenerator, all devices unit that forms a whole.
Described low temperature stage compressor output connects the input of low temperature level oil eliminator, between the input of the output of low temperature level oil eliminator and condenser/evaporator, forecooler is set, described forecooler is shell-tube type, finned heat exchanger or plate type heat exchanger, the type of cooling is for adopting water quench, air cooling or refrigerant cools, most of sensible heat of the high-temperature high-pressure refrigerant gas that will be discharged by low temperature stage compressor exhaust outlet absorbs, thereby after refrigerant gas continues to enter condenser/evaporator, reduced heat transfer temperature difference, and take full advantage of its heat exchange area, improved heat exchange efficiency.
Between condenser/evaporator and low temperature level evaporimeter regenerator is set, described regenerator is board-like or shell and tube exchanger.The employing of regenerator can further reduce the refrigerant temperature before the low temperature level expansion valve, improves refrigerating capacity, and can improve the suction temperature of low temperature stage compressor, avoids being with the liquid phenomenon to occur.
Described low temperature level system also comprises the suction temperature control valve, and suction temperature control valve one end is connected with low temperature level evaporimeter, and the other end is connected with low temperature stage compressor suction end with regenerator, and described suction temperature control valve is hand-operated valve or motor-driven valve.The suction temperature control valve is set, cooperate simultaneously forecooler, regulate respectively the ratio that enters the flow rate of refrigerant gas of compressor air suction end from low temperature level evaporimeter and regenerator according to the variation of operating mode, thereby keep the suction temperature of low temperature stage compressor in-60 ℃ to-30 ℃ zone of reasonableness, further guaranteed the rational delivery temperature of low temperature stage compressor, guaranteed simultaneously the stability of medium temperature, made unit operation steady in a long-term under the condition of relative equilibrium.
Described high temperature stage compressor and low temperature stage compressor be semi-hermetic screw compressor, open helical-lobe compressor, piston compressor, entirely seal screw compressor or partly seal screw compressor.
Described oil eliminator and low temperature level oil eliminator are installed in respectively the high temperature stage compressor and the low temperature stage compressor is inner or outside, perhaps installs additional simultaneously in inside, the outside of high temperature stage compressor and low temperature stage compressor.
Described high temperature stage compressor connects economizer by gas supplementing opening, can further reduce the front refrigerant temperature of expansion valve, improves the efficient of high temperature level kind of refrigeration cycle.Described economizer connects respectively condenser and condenser/evaporator, and described economizer is board-like or shell and tube exchanger.
Described oil cooler and low temperature level oil cooler are plate type heat exchanger, shell and tube exchanger, double pipe heat exchanger or finned heat exchanger.
Beneficial effect: this has carried out larger improvement and innovation on the basis of conventional unit clearly, the devices such as economizer, forecooler, regenerator, suction temperature control valve have been increased, and is furnished with perfect control system, effectively raise the stability of unit operation, and Energy Efficiency Ratio is greatly improved, thereby has reached energy-saving and cost-reducing for the user, be the target of national energy savings.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, the present embodiment is implemented under take technical solutions of the utility model as prerequisite, should understand these embodiment and only be used for explanation the utility model and be not used in restriction scope of the present utility model.
As shown in Figure 1, a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace, the cooling cycle system that it comprises two independences and mutually restricts, be respectively high temperature level cooling cycle system and low temperature level cooling cycle system, the high temperature level system comprises high temperature stage compressor 1, oil eliminator 2, oil cooler 3, condenser 4, the first stop valve 5, the first filter 6, the second stop valve 7, hydrojet stop valve 8, economizer stop valve 9, the first expansion valve 10, economizer 11, hydrojet expansion valve 12, condenser/evaporator 25 and the second expansion valve 26; The low temperature level system comprises the second filter 13, the 3rd stop valve 14, regenerator 15, suction temperature control valve 16, low temperature level expansion valve 17, low temperature level evaporimeter 18, low temperature level oil cooler 19, low temperature stage compressor 20, expansion drum 21, low temperature level oil eliminator 22, magnetic valve 23, forecooler 24, condenser/evaporator 25, the 4th stop valve 27, all devices unit that forms a whole.
In the high temperature level system, the output of high temperature stage compressor 1 connects the input of oil eliminator 2, and oil eliminator 2 can be installed in high temperature stage compressor 1 inside, outside or install additional simultaneously in inside, the outside of high temperature stage compressor 1 simultaneously.The oil eliminator 2 of externally positioned type can be vertical oil separator or Horizontal oil separator.An output of oil eliminator 2 connects the input of condenser 4, and another output of oil eliminator 2 connects the input of high temperature stage compressor 1.Condenser 4 is water-cooled shell and tube condenser or air cooling fin trumpet cooler.The output of condenser 4 connects the input of the second stop valve 7 by the first stop valve 5, the first filter 6, the output of the second stop valve 7 is divided into three the tunnel: leading up to hydrojet stop valve 8, hydrojet expansion valve 12 is connected to the hydrojet end of high temperature stage compressor 1; Another road is connected to the gas supplementing opening of high temperature stage compressor 1 through economizer stop valve 9, economizer expansion valve 10 and economizer 11; One the tunnel links to each other with the input of economizer 11 again, and the output of economizer 11 links to each other with condenser/evaporator 25 inputs by the second expansion valve 26, and condenser/evaporator 25 outputs link to each other with high temperature stage compressor 1 input.Oil cooler 3 one ends connect the oil groove of high temperature stage compressor 1, and the other end connects the entery and delivery port of condenser 4.The above composition high temperature level circulatory system.
The cold-producing medium of high temperature level system can adopt the working medium such as R22, R404A or R507.
In the low temperature level system, the output of low temperature stage compressor 20 connects the input of low temperature level oil eliminator 22, and low temperature level oil eliminator 22 can be installed in low temperature stage compressor 20 inside, outside or install additional simultaneously in inside, the outside of low temperature stage compressor 20 simultaneously.The low temperature level oil eliminator 22 of externally positioned type can be vertical oil separator or Horizontal oil separator.An output of low temperature level oil eliminator 22 connects the input of forecooler 24, and another output of low temperature level oil eliminator 22 connects the input of low temperature stage compressor 20.Forecooler 24 can be plate type heat exchanger, shell and tube exchanger, double pipe heat exchanger or finned heat exchanger, forecooler 24 outputs connect the input of condenser/evaporator 25, the output of condenser/evaporator 25 is by the 4th stop valve 27, filter 13, be connected to an input of regenerator 15 behind the 3rd stop valve 14, an output of regenerator 15 is connected to the input of low temperature level evaporimeter 18 by low temperature level expansion valve 17, the output of low temperature level evaporimeter 18 is divided into two-way: the one road is connected to another input of regenerator 15, and another output of regenerator 15 is connected to the input of low temperature stage compressor 20; Another road is connected to the input of suction temperature control valve 16, and the output of suction temperature control valve 16 links to each other with another output of regenerator 15 and the input of low temperature stage compressor 20.Low temperature level oil cooler 19 1 ends connect the oil groove of low temperature stage compressor 20, and the other end connects the entery and delivery port of condenser 4.One end of expansion drum 21 is connected with the input of low temperature stage compressor 20, and the other end of expansion drum 21 is connected with the output of low temperature stage compressor 20 by magnetic valve 23.The above composition low temperature level circulatory system.
The utility model can provide the low temperature refrigerating medium of (being equivalent to evaporating temperature is between-50 ℃～-90 ℃) between-45 ℃～-85 ℃, on the basis of all parts optimal design, be equipped with perfect electric control project, guaranteed whole unit safety, stable, efficient operation.All parts of unit are traditionally arranged to be overall structure, but also can be set to as requested Split type structure.
Claims (8)
1. one kind with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace, comprise two cooling cycle systems, be respectively high temperature level system and low temperature level system, it is characterized in that: the oil eliminator (2) that the high temperature level system comprises high temperature stage compressor (1), link to each other with high temperature stage compressor (1) and oil cooler (3), the condenser (4) that links to each other with oil eliminator (2), the economizer (11) that links to each other with condenser (4) and the condenser/evaporator (25) that all links to each other with high temperature stage compressor (1) and economizer (11); The low temperature level system comprises low temperature stage compressor (20), expansion drum (21), low temperature level oil eliminator (22), low temperature level oil cooler (19) and regenerator (15), the forecooler (24) that links to each other with low temperature level oil eliminator (22), the condenser/evaporator (25) that links to each other with forecooler (24) that links to each other respectively with low temperature stage compressor (20) and the low temperature level evaporimeter (18) that links to each other with regenerator (15), all devices unit that forms a whole.
2. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described low temperature stage compressor (20) output connects the input of low temperature level oil eliminator (22), between the input of the output of low temperature level oil eliminator (22) and condenser/evaporator (25), forecooler (24) is set, described forecooler (24) is shell-tube type, finned heat exchanger or plate type heat exchanger, and the type of cooling is for adopting water quench, air cooling or refrigerant cools.
3. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: between condenser/evaporator (25) and low temperature level evaporimeter (18) regenerator (15) is set, described regenerator (15) is board-like or shell and tube exchanger.
4. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described low temperature level system also comprises suction temperature control valve (16), suction temperature control valve (16) one ends are connected with low temperature level evaporimeter (25), the other end is connected 20 with regenerator (15) with the low temperature stage compressor) suction end is connected, and described suction temperature control valve (16) is hand-operated valve or motor-driven valve.
5. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described high temperature stage compressor (1) and low temperature stage compressor (20) are for semi-hermetic screw compressor, unlatching helical-lobe compressor, piston compressor, entirely seal screw compressor or partly seal screw compressor.
6. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described oil eliminator (2) and low temperature level oil eliminator (22) are installed in respectively high temperature stage compressor (1) and low temperature stage compressor (20) is inner or outside, perhaps installs additional simultaneously in inside, the outside of high temperature stage compressor (1) and low temperature stage compressor (20).
7. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described high temperature stage compressor (1) connects economizer (11) by gas supplementing opening, described economizer (11) connects respectively condenser (4) and condenser/evaporator (25), and described economizer (11) is board-like or shell and tube exchanger.
8. described a kind of with the pre-thermoregulator efficient double base overlapping deep cooling unit of cold-peace according to claim 1, it is characterized in that: described oil cooler (3) and low temperature level oil cooler (19) are plate type heat exchanger, shell and tube exchanger, double pipe heat exchanger or finned heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220550614 CN202869066U (en) | 2012-10-25 | 2012-10-25 | Efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions |
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| CN 201220550614 CN202869066U (en) | 2012-10-25 | 2012-10-25 | Efficient dual-element-overlapped copious cooling unit with pre-cooling and temperature adjustment functions |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486755A (en) * | 2013-10-18 | 2014-01-01 | 安徽美乐柯制冷空调设备有限公司 | Carbon dioxide overlapping-type commercial refrigeration system |
| CN103673368A (en) * | 2013-12-27 | 2014-03-26 | 天津商业大学 | Superposed refrigerating system capable of adjusting air-intake temperature of compressor |
| CN105004088A (en) * | 2015-07-31 | 2015-10-28 | 广东申菱空调设备有限公司 | Cascaded water chilling unit for dual purposes of intermediate temperature and low temperature |
| CN107631507A (en) * | 2017-11-02 | 2018-01-26 | 珠海格力电器股份有限公司 | Air-conditioning device and refrigeration storage system control method |
| CN109813004A (en) * | 2019-01-28 | 2019-05-28 | 南通美吉乐制冷设备有限公司 | The robot control system(RCS) of superposition type deep cooling Parallel sets |
| CN110425775A (en) * | 2019-08-19 | 2019-11-08 | 北京丰联奥睿科技有限公司 | A kind of V-type vertical tube evaporative cooling tower and its air-conditioning system |
| CN112484351A (en) * | 2020-12-03 | 2021-03-12 | 苏州电器科学研究院股份有限公司 | Large-span low-temperature refrigerating system for test box |
| CN115031421A (en) * | 2022-04-14 | 2022-09-09 | 江阴市索创工业精密制冷设备有限公司 | Low-temperature skid-mounted refrigerating unit of hydrogenation machine |
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2012
- 2012-10-25 CN CN 201220550614 patent/CN202869066U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486755A (en) * | 2013-10-18 | 2014-01-01 | 安徽美乐柯制冷空调设备有限公司 | Carbon dioxide overlapping-type commercial refrigeration system |
| CN103486755B (en) * | 2013-10-18 | 2016-02-24 | 安徽美乐柯制冷空调设备有限公司 | A kind of carbon dioxide overlapping-type commercial refrigeration system |
| CN103673368A (en) * | 2013-12-27 | 2014-03-26 | 天津商业大学 | Superposed refrigerating system capable of adjusting air-intake temperature of compressor |
| CN105004088A (en) * | 2015-07-31 | 2015-10-28 | 广东申菱空调设备有限公司 | Cascaded water chilling unit for dual purposes of intermediate temperature and low temperature |
| CN107631507A (en) * | 2017-11-02 | 2018-01-26 | 珠海格力电器股份有限公司 | Air-conditioning device and refrigeration storage system control method |
| CN107631507B (en) * | 2017-11-02 | 2023-06-20 | 珠海格力电器股份有限公司 | Air conditioner and control method of refrigeration house system |
| CN109813004A (en) * | 2019-01-28 | 2019-05-28 | 南通美吉乐制冷设备有限公司 | The robot control system(RCS) of superposition type deep cooling Parallel sets |
| CN110425775A (en) * | 2019-08-19 | 2019-11-08 | 北京丰联奥睿科技有限公司 | A kind of V-type vertical tube evaporative cooling tower and its air-conditioning system |
| CN112484351A (en) * | 2020-12-03 | 2021-03-12 | 苏州电器科学研究院股份有限公司 | Large-span low-temperature refrigerating system for test box |
| WO2022116133A1 (en) * | 2020-12-03 | 2022-06-09 | 苏州电器科学研究院股份有限公司 | Wide-range low-temperature refrigeration system for test chamber |
| CN115031421A (en) * | 2022-04-14 | 2022-09-09 | 江阴市索创工业精密制冷设备有限公司 | Low-temperature skid-mounted refrigerating unit of hydrogenation machine |
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Granted publication date: 20130410 |