CN2856870Y - Large capacity multi-handpiece screw rod type cold water set - Google Patents
Large capacity multi-handpiece screw rod type cold water set Download PDFInfo
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- CN2856870Y CN2856870Y CN 200520067993 CN200520067993U CN2856870Y CN 2856870 Y CN2856870 Y CN 2856870Y CN 200520067993 CN200520067993 CN 200520067993 CN 200520067993 U CN200520067993 U CN 200520067993U CN 2856870 Y CN2856870 Y CN 2856870Y
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Abstract
The utility model is related to a large-volume multi-machine head screw water chilling unit, which is characterized in that four semi-hermetic dual-screw compressor are disposed on two evaporators respectively in pairs, the evaporators connected in parallel are disposed on a condenser, two set of refrigerating system composed of the two semi-hermetic dual-screw compressor, one evaporator and two condensers are provided independently, a stop valve, a filter drier, a viewing glass and an electronic expansion valve are provided on each refrigerating circuit, two water outflow pipes connected with the evaporators are converged into a water outflow manifold and two water inflow pipes connected with the evaporators are converged into a water inflow manifold. The utility model has low cost, simple structure, reliable operation and it can be applied in a refrigerating environment with high-degree of accuracy.
Description
Technical field
The utility model relates to a kind of electricity refrigeration central air-conditioning handpiece Water Chilling Units, specifically, relates to a kind of big capacity multimachine head screw-type water chiller.
Background technology
In recent years, the application of electricity refrigeration central air-conditioning handpiece Water Chilling Units day by day increased, and as various newly-built heavy constructions such as used by hotels and restaurants by, office building, various factory building application was arranged all.At home, the cold scope is the handpiece Water Chilling Units of 1400kW～3000kW, generally adopts centrifugal unit of import or open-type screw rod unit, though have the high advantage of Energy Efficiency Ratio, also exists a series of problems:
1, external lubricating oil system, the oil circuit complexity, motor leans on the air cooling heat dissipation, the environment temperature rise, noise is higher;
2, evaporimeter adopts full-liquid type, and the oil piping system complexity is easy to generate the bad problem of oil return;
3,, when underload, be easy to generate the surge problem to centrifugal unit;
4, need special equipment during unit starting, electrical network is produced impact easily;
5, the standby property of single unit is not high, and the palpus complete machine is standby, increases initial cost;
6, system is provided with various sensor special elements, in case need to change the expense costliness.
Summary of the invention
The purpose of this utility model is at above-mentioned existing problems, provide a kind of do not have complicated oil piping system, reliable, easy to operate, Energy Efficiency Ratio is high, noise is low, the big capacity multimachine head screw-type water chiller of no underload surge.
The purpose of this utility model is achieved in that four and half envelope double-screw compressors make up in twos, is stacked in respectively on two evaporimeters; Two evaporator parallel type settings are stacked on the condenser respectively; Connect two pipeline refrigeration systems that two and half envelope double-screw compressors, evaporimeter and two condensers constitute respectively and independently be provided with separately, the refrigerating circuit of every pipeline refrigeration system is provided with stop valve, device for drying and filtering, visor and electric expansion valve; The outlet pipe that connects evaporimeter gathers and is total water outflow manifold, and the water inlet pipe that connects evaporimeter gathers and is total water inflow manifold; Independent separately because of two pipeline refrigeration systems, arbitrary system failure does not influence the operate as normal of another system; Unit adopts the flow of electronic expansion valve controls cold-producing medium, with respect to traditional outer balanced type expansion valve, have be quick on the draw, the advantage of precision height, adjustable range broadness, can adapt to the requirement of unit energy step-less adjustment well.
The utility model partly seals double-screw compressor and can adopt built-in oil eliminator, and oil piping system is built on the half envelope double-screw compressor, and its oil piping system is simple.
The utility model, evaporimeter can adopt dry evaporator; Condenser can adopt shell and tube condenser.
The utility model can be provided with safety valve, vent valve on the housing of shell and tube condenser.
The utility model can be provided with heavy-current control case, light current control cabinet on the handpiece Water Chilling Units, display screen, high-pressure manometer, low pressure gauge and high-pressure controller, low pressure controller are installed on the light current control cabinet, is convenient to operation, safeguards.
The utility model because of adopting following structure, has tangible good effect:
1, adopt four heads partly to seal double-screw compressor, combination is stacked on two dry evaporator housings in twos; The parallel connection of dual dry evaporimeter, each inlet tube and outlet tube merges into house steward, and unit Inlet and outlet water temp probe is installed on the house steward; Four platform independent shell and tube condenser correspondence systems separately are provided with safety valve and vent valve on the housing;
2, the used double-screw compressor that partly seals of unit is built-in oil eliminator, oil piping system is also built-in partly to be sealed on the double-screw compressor, two pipeline refrigeration systems independently are provided with separately, and the refrigerating circuit of every pipeline refrigeration system is provided with stop valve, device for drying and filtering, visor, electric expansion valve; Unit adopts the electronic expansion valve controls refrigerant flow, and with respect to traditional outer balanced type expansion valve, have and be quick on the draw, the precision height, the advantage of adjustable range broadness can adapt to the requirement of unit energy step-less adjustment well;
3, unit Electromechanical Design, electric control system is installed on the unit casing.The unit strong, weak electricity is separately established two heavy-current control casees, a light current control cabinet; Display screen, instrument, control device are installed on the light current control cabinet, are convenient to operation, safeguard;
4, unit adopts the PLC Programmable Logic Controller, and touch-screen shows, the cold step-less adjustment, minimum can be to 12.5%;
5, unit can be realized intelligent management, compare according to Inlet and outlet water temperature and setting value by computer, automatically double-screw compressor operation platform number is partly sealed in unloading or adjusting, thereby improved the sub-load efficient of unit greatly, realize the energy-saving run of unit, cold scope of the present utility model is between 1400kW～3000kW.
In sum, the utility model has the advantage that cost is low, simple in structure, operational reliability is high; Can be widely used in having in the air conditioner refrigerating environment of high accuracy manufacturability requirement.
Following embodiment is further described the utility model in conjunction with the accompanying drawings.
Description of drawings
Fig. 1 is the structure principle chart of an embodiment of the present utility model;
Fig. 2 is the main TV structure schematic diagram of Fig. 1 embodiment;
Fig. 3 is the right TV structure schematic diagram of Fig. 1 embodiment;
Fig. 4 is the plan structure schematic diagram of Fig. 1 embodiment.
Among the figure, 1, partly seal double-screw compressor, 2, dry evaporator, 3, shell and tube condenser, 4, total water outflow manifold, 5, total water inflow manifold, 6, the heavy-current control case, 7, light current control cabinet, 8, refrigerating circuit, 9, stop valve, 10, device for drying and filtering, 11, visor, 12, electric expansion valve, 13, vent valve, 14, safety valve, 15, electric expansion valve low-pressure sensor, 16, high-pressure controller, 17, the low pressure controller, 18, high-pressure manometer, 19, low pressure gauge, 20, the electric expansion valve temperature sensor.
The specific embodiment
Referring to figs. 1 through Fig. 4, four and half envelope double-screw compressors 1 of present embodiment make up in twos, are stacked in respectively on two dry evaporators 2; Two dry evaporator 2 parallel settings are stacked in respectively on the shell and tube condenser 3; Connect two and half envelope double-screw compressors, a dry evaporator and two two pipeline refrigeration systems independently settings separately that shell and tube condenser constitutes respectively, the refrigerating circuit 8 of every pipeline refrigeration system is provided with stop valve 9, device for drying and filtering 10, visor 11 and electric expansion valve 12; It is total water outflow manifold 4 that the outlet pipe that connects dry evaporator gathers, and it is total water inflow manifold 5 that the water inlet pipe of connection dry evaporator gathers; Partly seal double-screw compressor 1 built-in oil eliminator, oil piping system is built on the half envelope double-screw compressor 1, and its oil piping system is simple; The housing of shell and tube condenser 3 is provided with safety valve 14, vent valve 13; Handpiece Water Chilling Units is provided with heavy-current control case 6, light current control cabinet 7, and display screen, high-pressure manometer 18, low pressure gauge 19 and high-pressure controller 16, low pressure controller 17 are installed on the light current control cabinet 7, is convenient to operation, safeguards; Unit adopts electric expansion valve low-pressure sensor 15, electric expansion valve temperature sensor 20 FEEDBACK CONTROL refrigerant flows, with respect to traditional outer balanced type expansion valve, have and be quick on the draw the precision height, the advantage of adjustable range broadness can adapt to the requirement of unit energy step-less adjustment well.
Refrigeration principle of the present utility model: the high temperature and high pressure gas that partly seals the double-screw compressor discharge enters shell and tube condenser, gas is always from the recirculated water release heat of cooling tower, make refrigerant condenses become liquid also the mistake to treat coldly to the shell and tube condenser bottom, flow into feed pipe then, cross liquid refrigerant after cold flow through device for drying and filtering, visor, enter dry evaporator through after the throttling of electric expansion valve again.Liquid refrigerant begins vaporization after entering dry evaporator, in vaporescence, absorption the flowed through chilled water liberated heat of dry evaporator, become gaseous state and overheated refrigerant vapour fully and enter half envelope double-screw compressor, so just finished a kind of refrigeration cycle.
Claims (5)
1, a kind of big capacity multimachine head screw-type water chiller, it is characterized in that: four and half envelope double-screw compressors (1) make up in twos, are stacked in respectively on two evaporimeters; Described two evaporator parallel type settings are stacked on the condenser respectively; Connect two pipeline refrigeration systems that two and half envelope double-screw compressors (1), evaporimeter and two condensers constitute respectively and independently be provided with separately, stop valve (9), device for drying and filtering (10), visor (11) and electric expansion valve (12) are set in the refrigerating circuit of every pipeline refrigeration system (8); It is total water outflow manifold (4) that the outlet pipe that connects described evaporimeter gathers, and it is total water inflow manifold (5) that the water inlet pipe that connects described evaporimeter gathers.
2, big capacity multimachine head screw-type water chiller according to claim 1, it is characterized in that: the described double-screw compressor (1) that partly seals adopts built-in oil eliminator, and oil piping system is built in described partly the envelope on the double-screw compressor (1).
3, big capacity multimachine head screw-type water chiller according to claim 1 and 2 is characterized in that: described evaporimeter adopts dry evaporator (2); Described condenser adopts shell and tube condenser (3).
4, big capacity multimachine head screw-type water chiller according to claim 3 is characterized in that: safety valve (14), vent valve (13) are set on the housing of described shell and tube condenser (3).
5, big capacity multimachine head screw-type water chiller according to claim 1 and 2, it is characterized in that: handpiece Water Chilling Units is provided with heavy-current control case (6), light current control cabinet (7), and display screen, high-pressure manometer (18), low pressure gauge (19) and high-pressure controller (16), low pressure controller (17) are installed on the described light current control cabinet (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067993 CN2856870Y (en) | 2005-11-29 | 2005-11-29 | Large capacity multi-handpiece screw rod type cold water set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520067993 CN2856870Y (en) | 2005-11-29 | 2005-11-29 | Large capacity multi-handpiece screw rod type cold water set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2856870Y true CN2856870Y (en) | 2007-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520067993 Expired - Lifetime CN2856870Y (en) | 2005-11-29 | 2005-11-29 | Large capacity multi-handpiece screw rod type cold water set |
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| CN (1) | CN2856870Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022870A (en) * | 2010-12-09 | 2011-04-20 | 海尔集团公司 | Method for improving supercooling degree of screw machine set and screw machine set adopting same |
| CN102563942A (en) * | 2011-12-08 | 2012-07-11 | 北方工业大学 | Heat pump unit with multiple parallel scroll compressors and trickle falling film evaporator |
| CN104215008A (en) * | 2014-10-08 | 2014-12-17 | 烟台荏原空调设备有限公司 | Method and system of capacity regulation of screw refrigerator |
| CN104214982A (en) * | 2014-08-07 | 2014-12-17 | 广东申菱空调设备有限公司 | Air-cooling screw water chilling unit with high precision and low cost and control method of air-cooling screw water chilling unit |
| CN106979630A (en) * | 2017-04-13 | 2017-07-25 | 朗峰新材料科技股份有限公司 | A kind of modified chill roll cooling system of carrying device processed |
-
2005
- 2005-11-29 CN CN 200520067993 patent/CN2856870Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102022870A (en) * | 2010-12-09 | 2011-04-20 | 海尔集团公司 | Method for improving supercooling degree of screw machine set and screw machine set adopting same |
| CN102022870B (en) * | 2010-12-09 | 2014-02-19 | 海尔集团公司 | Method for improving supercooling degree of screw machine set and screw machine set adopting same |
| CN102563942A (en) * | 2011-12-08 | 2012-07-11 | 北方工业大学 | Heat pump unit with multiple parallel scroll compressors and trickle falling film evaporator |
| CN104214982A (en) * | 2014-08-07 | 2014-12-17 | 广东申菱空调设备有限公司 | Air-cooling screw water chilling unit with high precision and low cost and control method of air-cooling screw water chilling unit |
| CN104215008A (en) * | 2014-10-08 | 2014-12-17 | 烟台荏原空调设备有限公司 | Method and system of capacity regulation of screw refrigerator |
| CN104215008B (en) * | 2014-10-08 | 2016-05-25 | 烟台荏原空调设备有限公司 | A kind of method and system of screw refrigerator capacity regulating |
| CN106979630A (en) * | 2017-04-13 | 2017-07-25 | 朗峰新材料科技股份有限公司 | A kind of modified chill roll cooling system of carrying device processed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG JIRONG AIR CONDITIONING CO., LTD. Free format text: FORMER OWNER: GUANGDONG PROVINCE JIRONG AIR CONDITIONER EQUIPMENT CO.,LTD. Effective date: 20091023 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091023 Address after: Guangdong District of Rongcheng city in Jieyang Province town of Ji Rong Da Dao Long Hua Lou, zip code: 522061 Patentee after: Guangdong Jirong Air-Conditioner Co., Ltd. Address before: Guangdong District of Rongcheng city in Jieyang Province town of Ji Rong Lu, zip code: 522061 Patentee before: Girony Air-conditioner Equipment Co., Guangdong |
|
| CX01 | Expiry of patent term |
Granted publication date: 20070110 |
|
| EXPY | Termination of patent right or utility model |