CN2716732Y - Air-cooling screw heat pump water cooling and heating machine set - Google Patents
Air-cooling screw heat pump water cooling and heating machine set Download PDFInfo
- Publication number
- CN2716732Y CN2716732Y CN 200420024317 CN200420024317U CN2716732Y CN 2716732 Y CN2716732 Y CN 2716732Y CN 200420024317 CN200420024317 CN 200420024317 CN 200420024317 U CN200420024317 U CN 200420024317U CN 2716732 Y CN2716732 Y CN 2716732Y
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- valve
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- heat exchanger
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Disclosed is an air-cooling screw heat pump water cooling and heating machine set, comprising a screw compressor (1), a four-way change valve (2), a fin type heat exchanger (3), a shell and tube exchanger (10) and pipelines. A unidirectional valve (4), a dry filter (7) and a system electromagnetic valve (8) are connected between the fin type heat exchanger (3) and the shell and tube exchanger (10) through the pipelines. A temperature sensor (15) and a pressure sensor (16) are positioned on the pipelines between the four-way change valve (2) and a gas-liquid separator (11). An electronic expansion valve (9) is positioned on the pipelines between the system electromagnetic valve (8) and the fin type heat exchanger (3), and a hot gas electromagnetic valve (12) is bypassed between the compressor (1) and the input end of the electronic expansion valve (9). The utility model has high energy efficiency ratio and low energy consumption, can raise the service life and reliability of the compressor and other parts, and can raise the comfort degree of the air conditioner environment.
Description
Technical field
The utility model relates to the air-cooled hot screw pump hot and cold water unit that a kind of air-conditioning system is used.
Background technology
Along with the develop rapidly of national economy and improving constantly of living standards of the people, central air-conditioning has been widely used and is universal day by day.But world energy sources, resource are day by day nervous, are guaranteeing that cutting down the consumption of energy becomes the problem of people's extensive concern under the healthy and comfortable prerequisite.But the air-cooled hot screw pump hot and cold water unit that uses has the following disadvantages at present: its throttling arrangement adopts heating power expansion valve, the adjustable range of heating power expansion valve is narrow, and poor with the modulability that different air conditioning conditions change, temperature-responsive is slow, precision is not high, and the Energy Efficiency Ratio of unit is not high; Simultaneously, it adopts traditional Defrost method-four-way change-over valve reverse cycle defrost, and there is following shortcoming in this Defrost mode: defrosting time is long, and the air conditioner surroundings variations in temperature is big, the heat exchanger defrosting is unclean, makes the comfortableness of indoor environment and the reliability of equipment be subjected to negative effect largely.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of Energy Efficiency Ratio height, air-cooled hot screw pump hot and cold water unit that energy consumption is low are provided.
The technical scheme that realizes above-mentioned purpose is: a kind of air-cooled hot screw pump hot and cold water unit, comprise screw compressor, four-way change-over valve, finned heat exchanger, shell and tube exchanger and pipeline, be connected with check valve by pipeline between finned heat exchanger and the shell and tube exchanger, device for drying and filtering and system's magnetic valve, pipeline between four-way change-over valve and the gas-liquid separator is provided with temperature sensor and pressure sensor, pipeline between system's magnetic valve and the finned heat exchanger is provided with electric expansion valve, and bypass has hot gas solenoid valve between the input of compressor and electric expansion valve.
After adopting technique scheme, pipeline between system's magnetic valve and the finned heat exchanger is provided with electric expansion valve, electric expansion valve is as throttling arrangement, its control characteristic is wide, can between 10% to 100%, regulate, pass through corresponding controller, make electric expansion valve in refrigerating operaton, satisfy helical-lobe compressor on the one hand and can transfer the needs that change under the operating mode in difference to the control of refrigerant flow, on the other hand, the required best liquid supply rate of evaporimeter is also satisfied in the control of refrigerant flow, evaporation efficiency is improved greatly, the Energy Efficiency Ratio of unit also obviously improves, thereby saved electric energy, reduced energy resource consumption.In addition, it is fast that electric expansion valve also has a temperature-responsive, advantage of high precision.Because bypass has hot gas solenoid valve between the input of compressor and electric expansion valve, hot gas solenoid valve is directly carried out defrost to unit under the situation that four-way change-over valve does not commutate, can reduce the impact of defrosting to compressor, avoid " oil of running quickly " problem of helical-lobe compressor, during simultaneously owing to defrosting electric expansion valve is carried out special control strategy, the process that can quicken to defrost, improve defrosting effect, energy savings, improve the service life and the reliability of parts such as compressor, simultaneously can also keep heat supply end the bigger fluctuation of temperature can not occur, improve the comfortableness of air-conditioning.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
As shown in Figure 1, a kind of air-cooled hot screw pump hot and cold water unit, comprise screw compressor 1, four-way change-over valve 2, finned heat exchanger 3, shell and tube exchanger 10 and pipeline, be connected with check valve 4 by pipeline between finned heat exchanger 3 and the shell and tube exchanger 10, device for drying and filtering 7 and system's magnetic valve 8, pipeline between four-way change-over valve 2 and the gas-liquid separator 11 is provided with temperature sensor 15 and pressure sensor 16, pipeline between system's magnetic valve 8 and the finned heat exchanger 3 is provided with electric expansion valve 9, and bypass has hot gas solenoid valve 12 between the input of compressor 1 and electric expansion valve 9.
As shown in Figure 1, bypass has hydrojet magnetic valve 13 and hydrojet expansion valve 14 between the input of compressor 1 and device for drying and filtering 7.Hydrojet magnetic valve 13 and hydrojet expansion valve 14 can play the effect of cooling compressor 1 when compressor 1 excessive discharge temperature.
As shown in Figure 1, also be connected with reservoir 5 by pipeline between finned heat exchanger 3 and the shell and tube exchanger 10.Reservoir 5 can be regulated refrigeration and the required cold medium flux of heating operation.
As shown in Figure 1, the input of device for drying and filtering 7 and output all are connected with ball valve 6.Ball valve 6 is mainly used in and turn-offs device for drying and filtering 7 two ends, is convenient to more renew cartridge.
Operation principle of the present utility model is as follows:
Unit is when normal operation, by temperature and the pressure signal that temperature sensor 15 and pressure sensor 16 are gathered, the fuzzy control of process controller, the open degree of regulating electric expansion valve 9, make it under various operating modes, all be in optimum state, thereby make unit reach the highest Energy Efficiency Ratio;
Unit is when heating operation, after controller receives the defrosting commencing signal, just send instruction, hot gas solenoid valve 12 must be established by cable and open, system's magnetic valve 8 dead electricity are closed, and the HTHP refrigerant vapor that compressor 1 is discharged flow to finned heat exchanger 3 beginning defrosting cycles by electric expansion valve 9 and check valve 4.In defrost process, aerofoil fan is out of service.After the defrosting termination condition satisfied, controller sent instruction, and hot gas solenoid valve 12 dead electricity are closed, and system's magnetic valve 8 must be established by cable and open, and unit recovers to heat normally circulation.Adopt this hot-gas bypass defrosting, the air conditioning hot temperature fluctuation that shell and tube exchanger 10 is discharged is less, and energy loss is little.
Claims (4)
1, a kind of air-cooled hot screw pump hot and cold water unit, comprise screw compressor (1), four-way change-over valve (2), finned heat exchanger (3), shell and tube exchanger (10) and pipeline, be connected with check valve (4) by pipeline between finned heat exchanger (3) and the shell and tube exchanger (10), device for drying and filtering (7) and system's magnetic valve (8), pipeline between four-way change-over valve (2) and the gas-liquid separator (11) is provided with temperature sensor (15) and pressure sensor (16), it is characterized in that: the pipeline between system's magnetic valve (8) and the finned heat exchanger (3) is provided with electric expansion valve (9), and bypass has hot gas solenoid valve (12) between the input of compressor (1) and electric expansion valve (9).
2, air-cooled hot screw pump hot and cold water unit according to claim 1, it is characterized in that: bypass has hydrojet magnetic valve (13) and hydrojet expansion valve (14) between the input of compressor (1) and device for drying and filtering (7).
3, air-cooled hot screw pump hot and cold water unit according to claim 1 and 2 is characterized in that: also be connected with reservoir (5) by pipeline between finned heat exchanger (3) and the shell and tube exchanger (10).
4, air-cooled hot screw pump hot and cold water unit according to claim 1 and 2, it is characterized in that: the input of device for drying and filtering (7) and output all are connected with ball valve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024317 CN2716732Y (en) | 2004-01-14 | 2004-01-14 | Air-cooling screw heat pump water cooling and heating machine set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024317 CN2716732Y (en) | 2004-01-14 | 2004-01-14 | Air-cooling screw heat pump water cooling and heating machine set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2716732Y true CN2716732Y (en) | 2005-08-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024317 Expired - Fee Related CN2716732Y (en) | 2004-01-14 | 2004-01-14 | Air-cooling screw heat pump water cooling and heating machine set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2716732Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666561A (en) * | 2006-03-27 | 2010-03-10 | 三菱电机株式会社 | Refrigerating and air-conditioning plant |
| CN102345941A (en) * | 2010-08-03 | 2012-02-08 | 昆山台佳机电有限公司 | Hydraulic filling type water source heat pump unit for central air-conditioning refrigerant side switching |
| CN104896821A (en) * | 2015-05-19 | 2015-09-09 | 合肥天鹅制冷科技有限公司 | Refrigerating system energy adjusting device |
| CN112984737A (en) * | 2021-03-10 | 2021-06-18 | 格力电器（合肥）有限公司 | Multi-split air conditioner control system, multi-split air conditioner control method, multi-split air conditioner, and storage medium |
| CN114909725A (en) * | 2022-05-30 | 2022-08-16 | 格力电器（合肥）有限公司 | High-efficiency energy-saving multi-split system |
-
2004
- 2004-01-14 CN CN 200420024317 patent/CN2716732Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666561A (en) * | 2006-03-27 | 2010-03-10 | 三菱电机株式会社 | Refrigerating and air-conditioning plant |
| CN102345941A (en) * | 2010-08-03 | 2012-02-08 | 昆山台佳机电有限公司 | Hydraulic filling type water source heat pump unit for central air-conditioning refrigerant side switching |
| CN102345941B (en) * | 2010-08-03 | 2014-08-13 | 昆山台佳机电有限公司 | Hydraulic filling type water source heat pump unit for central air-conditioning refrigerant side switching |
| CN104896821A (en) * | 2015-05-19 | 2015-09-09 | 合肥天鹅制冷科技有限公司 | Refrigerating system energy adjusting device |
| CN112984737A (en) * | 2021-03-10 | 2021-06-18 | 格力电器（合肥）有限公司 | Multi-split air conditioner control system, multi-split air conditioner control method, multi-split air conditioner, and storage medium |
| CN114909725A (en) * | 2022-05-30 | 2022-08-16 | 格力电器（合肥）有限公司 | High-efficiency energy-saving multi-split system |
| CN114909725B (en) * | 2022-05-30 | 2024-03-15 | 格力电器（合肥）有限公司 | Efficient energy-saving multi-split system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050810 Termination date: 20120114 |