CN204943954U - Low energy consumption refrigeration system - Google Patents
Low energy consumption refrigeration system Download PDFInfo
- Publication number
- CN204943954U CN204943954U CN201520439932.6U CN201520439932U CN204943954U CN 204943954 U CN204943954 U CN 204943954U CN 201520439932 U CN201520439932 U CN 201520439932U CN 204943954 U CN204943954 U CN 204943954U
- Authority
- CN
- China
- Prior art keywords
- capillary
- valve
- compressor
- branch road
- expansion valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model provides low energy consumption refrigeration system, comprise low-temperature level loop and high-temperature level loop, described low-temperature level loop and high-temperature level loop are by connecting as one of a plate type heat exchanger system, described plate type heat exchanger is located between described second oil eliminator and the second device for drying and filtering, the 5th branch road is provided with between described first electric expansion valve front end and described plate type heat exchanger, which is provided with the first magnetic valve and heating power expansion valve, between described plate type heat exchanger and the first compressor, be provided with temperature inductor.Advantage is: adopt automatic control mode; after controller detects the temperature inside the box from temperature sensor; the aperture of automatic adjustment electric expansion valve, Liquid injection cooling magnetic valve and hot gas bypass solenoid valve; when ensureing that the temperature inside the box is substantially constant, the service pressure of compressor assembly height pressure side and normal suction and discharge temperature also can be protected.
Description
Technical field
The utility model relates to laboratory's environmental test equipment field, is specifically related to the field of refrigeration of low energy consumption.
Background technology
In environmental test equipment, there is the testing equipment of many temperature/humidity class, in order to the behaviour in service of analog equipment better, often require there is higher precision controlling requirement to temperature/humidity in its chamber, due to the requirement that these are special, way in the past normally directly leads to the evaporator refrigeration in case with capillary, if refrigerating capacity is excessive, then go to offset too much cold by heating wire heating.Because the scope of experiment of temperature/humidity point is large, but controlled capillary is limited, the cooling load of each point can not be met pointedly, just result in when doing most temperature/humidity experimental tests, refrigerating capacity has all exceeded needed for experiment, controller does not also control the function of capillary flow rate automatically, then needing increases a large amount of heats to offset unnecessary cold, causes a large amount of electric energy to be wasted in vain.
Be " CN203501525U " at Chinese utility model patent Authorization Notice No., authorized announcement date is on March 26th, 2014, " a kind of carbon dioxide overlapping-type commercial refrigeration system " by name, this technical scheme forms cascade refrigeration loop jointly by high-temperature level loop and low-temperature level loop.Though this technical scheme refrigeration system is more before this energy-conservation, manipulation convenience increases, but described number of devices is many, and manufacturing cost is high, and line construction is complicated, and can only realize cascade refrigeration, flexibility ratio is inadequate.
Utility model content
The purpose of this utility model is to provide the refrigeration system of low energy consumption, can solve the phenomenon of high energy consumption in existing equipment, and this control system high-intelligentization and controllability, low cost of manufacture, can realize single entry and cascade refrigeration switches, and structure is simple.
Low energy consumption refrigeration system, comprises low-temperature level loop and high-temperature level loop,
High-temperature level loop comprises the first compressor, its high-pressure side is connected with the first oil eliminator and the first air-cooled condenser, the first fluid reservoir, the first device for drying and filtering, the first electric expansion valve, the first evaporimeter, described first evaporimeter is connected on the low-pressure end of the first compressor by the first muffler, is also provided with:
First branch road, described first branch road one end is connected on described first air-cooled condenser, the other end is connected on the low-pressure end of described first compressor, which is provided with the first capillary, is provided with the first hot gas bypass solenoid valve between described first capillary and the first air-cooled condenser;
Second branch road, described second branch road one end is connected between described first device for drying and filtering and the first electric expansion valve, and the other end is connected between described first evaporimeter and described first compressor; Which is provided with the second capillary, between described second capillary and the first device for drying and filtering, be provided with a Liquid injection cooling magnetic valve,
Low-temperature level loop comprises the second compressor, and its high-pressure side is connected with the second oil eliminator and the first evaporimeter, the second device for drying and filtering, the second evaporimeter, and described second evaporimeter is connected on described second compressor low-pressure end by the second muffler, is also provided with:
3rd branch road, described 3rd branch road one end is connected between described second oil eliminator and the second device for drying and filtering, the other end is connected between described second evaporimeter and described second compressor, it is serially connected with three capillary and the 4th capillary, be provided with the second fluid reservoir between the two, described three capillary front end is provided with the second hot gas bypass solenoid valve
4th branch road, described 4th branch road one end is connected between described second device for drying and filtering and the second electric expansion valve, and the other end is connected on the second muffler, which is provided with the 5th capillary, the second Liquid injection cooling magnetic valve is provided with between described 5th capillary and the second device for drying and filtering
Described low-temperature level loop and high-temperature level loop are by connecting as one of a plate type heat exchanger system, described plate type heat exchanger is located between described second oil eliminator and the second device for drying and filtering, the 5th branch road is provided with between described first electric expansion valve front end and described plate type heat exchanger, which is provided with the first magnetic valve and heating power expansion valve, between described plate type heat exchanger and the first muffler, be provided with temperature inductor.
Further, described second capillary end and the first evaporimeter end cross the check valve being in and being provided with between the first capillary end and flowing to the first compressor direction.
Further, described heating power expansion valve is connected with described temperature inductor.
Further, described second hot gas bypass solenoid valve front end and described three capillary end are parallel with feather valve.
Further, described first electric expansion valve, the first hot gas bypass solenoid valve, Liquid injection cooling magnetic valve, the first magnetic valve, the second Liquid injection cooling magnetic valve, heating power expansion valve, temperature inductor are all connected with control system.
From the above, the refrigeration system advantage that the utility model provides is: contrast the inflow-rate of water turbine mode of operation that traditional controller controls capillary or heating power expansion valve, it all has the effect significantly reducing energy consumption to multiple humiture pattern, and the semi-intelligent that controller has judges action, the efficiency of debugging can be significantly improved, increase work efficiency; And the consumption of capillary and magnetic valve can be reduced, save device fabrication cost.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Detailed description of the invention
Many in order to solve number of devices in prior art, manufacturing cost is high, and line construction is complicated, and can only realize cascade refrigeration, the problems such as flexibility ratio is inadequate, now provide low energy consumption refrigeration system.
As shown in Figure 1, low energy consumption refrigeration system, comprises low-temperature level loop and high-temperature level loop,
High-temperature level loop comprises the first compressor CM1, its high-pressure side is connected with the first oil eliminator OS1 and the first air-cooled condenser HE1, the first fluid reservoir CR1, the first device for drying and filtering DF1, the first electric expansion valve 1, first evaporimeter HE10, described first evaporimeter HE10 is connected on the low-pressure end of the first compressor CM1 by the first muffler, is also provided with:
First branch road, described first branch road one end is connected on described first air-cooled condenser HE1, the other end is connected on the low-pressure end of described first compressor CM1, which is provided with the first capillary 1, is provided with the first hot gas bypass solenoid valve 3 between described first capillary 21 and the first air-cooled condenser HE1;
Second branch road, described second branch road one end is connected between described first device for drying and filtering DF1 and the first electric expansion valve 1, and the other end is connected between described first evaporimeter HE10 and described first compressor CM1; Which is provided with the second capillary 2, between described second capillary 2 and the first device for drying and filtering DF1, be provided with the first Liquid injection cooling magnetic valve 4,
Low-temperature level loop comprises the second compressor CM2, its high-pressure side is connected with the second oil eliminator OS2 and the second evaporimeter HE2, the second device for drying and filtering DF2, the second evaporimeter HE20, described second evaporimeter HE20 is connected on described second compressor CM2 low-pressure end by the second muffler, is also provided with:
3rd branch road, described 3rd branch road one end is connected between described second oil eliminator OS2 and the second device for drying and filtering DF2, the other end is connected between described second evaporimeter HE20 and described second compressor CM2, it is serially connected with three capillary 5 and the 4th capillary 6, described three capillary 5 front end is provided with the second hot gas bypass solenoid valve 7
4th branch road, described 4th branch road one end is connected between described second device for drying and filtering DF2 and the second electric expansion valve 8, the other end connects on the second muffler, which is provided with the 5th capillary 9, the second Liquid injection cooling magnetic valve 10 is provided with between described 5th capillary 9 and the second device for drying and filtering DF2
Described low-temperature level loop and high-temperature level loop are by connecting as one of a plate type heat exchanger HE12 system, described plate type heat exchanger HE12 is located between described second oil eliminator OS2 and the second device for drying and filtering DF2, the 5th branch road is provided with between described first electric expansion valve 1 front end and described plate type heat exchanger HE12, which is provided with the first magnetic valve 11 and heating power expansion valve EV1, between described plate type heat exchanger HE12 and the first compressor CM1, be provided with temperature inductor BT1.
Described second capillary 2 end and the first evaporimeter HE10 end cross the check valve being in and being provided with between the first capillary 21 end and flowing to the first compressor CM2 direction, described heating power expansion valve EV1 is connected with described temperature inductor BT1, the second fluid reservoir CR2 is provided with between described three capillary 5 and the 4th capillary 6, described second hot gas bypass solenoid valve 7 front end and described three capillary 5 end are parallel with feather valve DPR-343D, automatically open when pressure overrate, close described first electric expansion valve 1 when pressure is normal, first hot gas bypass solenoid valve 3, Liquid injection cooling magnetic valve 4, first magnetic valve 11, second Liquid injection cooling magnetic valve 10, heating power expansion valve EV1, temperature inductor BT1 is all connected with control system.
Utility model works principle is as follows:
Single entry is freezed: high-temperature level circuit refrigeration system starts cooling, when chamber temperature reaches design temperature (more than-40 DEG C), controller controls the first electric expansion valve 1 and regulates cold medium flux, make the heating wire caloric value of prepackage in case as far as possible little not exerting oneself even completely get final product steady temperature; Control the first hot gas bypass solenoid valve 3 on the other hand to ensure that back pressure is within normal range value; Moreover, when the return-air/delivery temperature of this refrigeration system exceedes set temperature value, open the first Liquid injection cooling magnetic valve 4 and reduce return-air/delivery temperature, high-temperature level refrigeration system is run well.
Cascade refrigeration: the circulation of high-temperature level (R404A) refrigeration system and the circular flow of low-temperature level (R23) refrigeration system.High-temperature level (R404A) refrigeration system starts cooling, only drive the first magnetic valve before heating power expansion valve EV1 to lower the temperature to plate type heat exchanger HE12, after temperature inductor BT1 provides temperature signal, low-temperature level (R23) refrigeration system is opened, and lowers the temperature in chamber.When chamber temperature reaches design temperature (more than-70 DEG C, less than-40 DEG C), controller controls the second electric expansion valve 8 adjust flux, make the heating wire caloric value of prepackage in case as far as possible little not exerting oneself even completely get final product steady temperature; Control the second hot gas bypass solenoid valve 7 on the other hand to ensure that back pressure is within normal range value; Moreover, when the return-air/delivery temperature of low-temperature level (R404) refrigeration system exceedes set temperature value, open the second Liquid injection cooling magnetic valve 10 and reduce return-air/delivery temperature, refrigeration system is run well.
Claims (5)
1. low energy consumption refrigeration system, comprises low-temperature level loop and high-temperature level loop, it is characterized in that,
High-temperature level loop comprises the first compressor, its high-pressure side is connected with the first oil eliminator and the first air-cooled condenser, the first fluid reservoir, the first device for drying and filtering, the first electric expansion valve, the first evaporimeter, described first evaporimeter is connected on the low-pressure end of the first compressor by the first muffler, is also provided with:
First branch road, described first branch road one end is connected on described first air-cooled condenser, the other end is connected on the low-pressure end of described first compressor, which is provided with the first capillary, is provided with the first hot gas bypass solenoid valve between described first capillary and the first air-cooled condenser;
Second branch road, described second branch road one end is connected between described first device for drying and filtering and the first electric expansion valve, and the other end is connected between described first evaporimeter and described first compressor; Which is provided with the second capillary, between described second capillary and the first device for drying and filtering, be provided with a Liquid injection cooling magnetic valve,
Low-temperature level loop comprises the second compressor, and its high-pressure side is connected with the second oil eliminator and the first evaporimeter, the second device for drying and filtering, the second evaporimeter, and described second evaporimeter is connected on described second compressor low-pressure end by the second muffler, is also provided with:
3rd branch road, described 3rd branch road one end is connected between described second oil eliminator and the second device for drying and filtering, the other end is connected between described second evaporimeter and described second compressor, it is serially connected with three capillary and the 4th capillary, be provided with the second fluid reservoir between the two, described three capillary front end is provided with the second hot gas bypass solenoid valve
4th branch road, described 4th branch road one end is connected between described second device for drying and filtering and the second electric expansion valve, and the other end is connected on the second muffler, which is provided with the 5th capillary, the second Liquid injection cooling magnetic valve is provided with between described 5th capillary and the second device for drying and filtering
Described low-temperature level loop and high-temperature level loop are by connecting as one of a plate type heat exchanger system, described plate type heat exchanger is located between described second oil eliminator and the second device for drying and filtering, the 5th branch road is provided with between described first electric expansion valve front end and described plate type heat exchanger, which is provided with the first magnetic valve and heating power expansion valve, between described plate type heat exchanger and described first muffler, be provided with temperature inductor.
2. low energy consumption refrigeration system according to claim 1, is characterized in that, described second capillary end and be provided with the check valve flowing to the first compressor direction between the first evaporimeter end intersection and the first capillary end.
3. low energy consumption refrigeration system according to claim 1, is characterized in that, described heating power expansion valve is connected with described temperature inductor.
4. low energy consumption refrigeration system according to claim 1, is characterized in that, described second hot gas bypass solenoid valve front end and described three capillary end are parallel with feather valve.
5. low energy consumption refrigeration system according to claim 4, it is characterized in that, described first electric expansion valve, the first hot gas bypass solenoid valve, Liquid injection cooling magnetic valve, the first magnetic valve, the second Liquid injection cooling magnetic valve, heating power expansion valve, temperature inductor are all connected with control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439932.6U CN204943954U (en) | 2015-06-23 | 2015-06-23 | Low energy consumption refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520439932.6U CN204943954U (en) | 2015-06-23 | 2015-06-23 | Low energy consumption refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204943954U true CN204943954U (en) | 2016-01-06 |
Family
ID=55011373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520439932.6U Expired - Fee Related CN204943954U (en) | 2015-06-23 | 2015-06-23 | Low energy consumption refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204943954U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107228510A (en) * | 2017-08-01 | 2017-10-03 | 合肥宏立制冷科技有限公司 | A kind of damping current stabilization return-air pipe assembly |
| JP2018189350A (en) * | 2017-05-04 | 2018-11-29 | ヴァイス・テクニック・ノース・アメリカ・インコーポレイテッドＷｅｉｓｓ Ｔｅｃｈｎｉｋ Ｎｏｒｔｈ Ａｍｅｒｉｃａ， Ｉｎｃ． | Climatic test chamber with stable cascading direct expansion refrigeration system |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
| CN115406129A (en) * | 2022-09-14 | 2022-11-29 | 江苏拓米洛环境试验设备有限公司 | Overlapping refrigerating system and environmental test chamber |
| EP4078046A4 (en) * | 2019-06-04 | 2023-12-20 | Trane Technologies Life Sciences LLC | System and method of hot gas defrost control for multistage cascade refrigeration system |
-
2015
- 2015-06-23 CN CN201520439932.6U patent/CN204943954U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018189350A (en) * | 2017-05-04 | 2018-11-29 | ヴァイス・テクニック・ノース・アメリカ・インコーポレイテッドＷｅｉｓｓ Ｔｅｃｈｎｉｋ Ｎｏｒｔｈ Ａｍｅｒｉｃａ， Ｉｎｃ． | Climatic test chamber with stable cascading direct expansion refrigeration system |
| US10655895B2 (en) | 2017-05-04 | 2020-05-19 | Weiss Technik North America, Inc. | Climatic test chamber with stable cascading direct expansion refrigeration system |
| CN107228510A (en) * | 2017-08-01 | 2017-10-03 | 合肥宏立制冷科技有限公司 | A kind of damping current stabilization return-air pipe assembly |
| CN107228510B (en) * | 2017-08-01 | 2023-04-28 | 合肥宏立制冷科技有限公司 | Damping steady flow muffler assembly |
| EP4078046A4 (en) * | 2019-06-04 | 2023-12-20 | Trane Technologies Life Sciences LLC | System and method of hot gas defrost control for multistage cascade refrigeration system |
| CN113019487A (en) * | 2021-03-02 | 2021-06-25 | 重庆浩生科技有限公司 | Temperature change test system capable of cooling to extremely low temperature at high rate |
| CN115406129A (en) * | 2022-09-14 | 2022-11-29 | 江苏拓米洛环境试验设备有限公司 | Overlapping refrigerating system and environmental test chamber |
| CN115406129B (en) * | 2022-09-14 | 2024-03-19 | 江苏拓米洛高端装备股份有限公司 | Cascade refrigeration system and environmental test box |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204943954U (en) | Low energy consumption refrigeration system | |
| CN103175344B (en) | Cold-region used multi-connected heat pump system and control method thereof | |
| CN203533802U (en) | Air-conditioning system | |
| CN201858734U (en) | Natural-cooling and energy-saving air conditioner | |
| CN104315742A (en) | Electric automobile air conditioning heat pump system with economizer and control method thereof | |
| CN201652653U (en) | Circulating air-conditioning system of liquid pump | |
| CN103807917A (en) | Air conditioner and air supply control method used for air conditioner | |
| US9671143B2 (en) | Heat pump of heat source tower for realizing solution regeneration and heat reutilization based on vacuum boiling | |
| CN101988723A (en) | Natural cooling energy-saving air conditioner and control method thereof | |
| CN2901189Y (en) | Cold medium regulator for air conditioner | |
| CN103129348A (en) | Electric vehicle heat pump system | |
| CN103277880A (en) | Refrigeration control method, device and system of machine room | |
| CN203642546U (en) | Industrial water chilling unit accurate in temperature | |
| CN203478768U (en) | Full-year combined refrigerating unit | |
| CN201488418U (en) | Defrosting structure of air source heat pump water heater | |
| CN102759147B (en) | Air-conditioning multiple on-line system | |
| CN203908097U (en) | Enhanced vapor injection air conditioner | |
| CN202869070U (en) | Air conditioner | |
| CN203385257U (en) | Pump starting control system and refrigeration system | |
| CN207893919U (en) | A kind of mechanical refrigeration and auxiliary cold source two-way United system | |
| CN202792261U (en) | Multi-split air conditioning system | |
| CN2849548Y (en) | Air supplying system for compressor | |
| CN204923613U (en) | Accurate control system of refrigerating output | |
| CN103604237A (en) | Air conditioner and method for controlling same | |
| CN204254925U (en) | Heat-exchange system and there is its air-conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20160106 Termination date: 20190623 |