CN201844626U - Water chiller set adaptive to ultra-low load stable operation - Google Patents
Water chiller set adaptive to ultra-low load stable operation Download PDFInfo
- Publication number
- CN201844626U CN201844626U CN2010205313777U CN201020531377U CN201844626U CN 201844626 U CN201844626 U CN 201844626U CN 2010205313777 U CN2010205313777 U CN 2010205313777U CN 201020531377 U CN201020531377 U CN 201020531377U CN 201844626 U CN201844626 U CN 201844626U
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- water chiller
- pipeline
- chiller set
- stable operation
- ultra
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Abstract
The utility model relates to a water chiller set for compressors, in particular to a water chiller set adaptive to ultra-low load stable operation. The water chiller set comprises a refrigeration cycle loop composed of a compressor, a condenser, an expansion valve and an evaporator, and is characterized in that an exhaust pipeline between the compressor and the condenser is connected with a pipeline; the other end of the pipeline is connected between the expansion valve and the evaporator; and the pipeline is internally provided with a hot gas bypass-valve. The water chiller set has the advantages of being simple in structure and convenient to use, and can realize stepless adjustment on the refrigerating output of the water chiller set from 0 to 100 percent, so as to effectively avoid a dead zone of refrigerating output adjustment of the water chiller set, and meet the requirements of stable operation under ultra-low load and even without load.
Description
Technical field
The utility model relates to the handpiece Water Chilling Units that a kind of compressor is used, specifically a kind of handpiece Water Chilling Units that adapts to the stable operation of ultra-low load.
Background technology
Centrifugal refrigerating machines and screw-type water chiller have occupied most central air-conditioning market at present, no matter but be that the guide vane aperture that centrifugal refrigerating machines adopts is regulated, still the guiding valve of screw-type water chiller is regulated, the air-breathing volume flow that all has a minimum because of its compressor self character, the cold-producing medium of this flow can provide a minimum refrigerating capacity to the user in kind of refrigeration cycle, the refrigerating capacity that will be called this unit less than the customer charge demand of this minimum refrigerating capacity is regulated the dead band.The purposes of now handpiece Water Chilling Units is increasingly extensive, not only be used for comfort air conditioning system, increasing industrial user also is used for handpiece Water Chilling Units technical process control, and the load of user's request may from 0 to 100% changes in this process, and the refrigerating capacity of unit was regulated the dead band and may be caused controlling unstability than the technical process underload under this moment.Therefore it is very useful researching and developing a kind of handpiece Water Chilling Units that can adapt to ultra-low load or even can stable operation when zero load.
Summary of the invention
Technical problem to be solved in the utility model is exactly at the defective of existing compressor with handpiece Water Chilling Units, a kind of handpiece Water Chilling Units that adapts to the stable operation of ultra-low load is provided, and it has realized the demand that unit still can stable operation when ultra-low load even zero load condition.
The technical solution of the utility model is achieved in that it comprises the refrigeration cycle that is made of compressor, condenser, expansion valve and evaporimeter, it is characterized in that: be connected with a pipeline in the gas exhaust piping between compressor and condenser, the other end of pipeline is connected between expansion valve and the evaporimeter, and a hot gas bypass valve is housed in pipeline.
The utlity model has advantage simple in structure, easy to use, it can realize the step-less adjustment of handpiece Water Chilling Units refrigerating capacity from 0～100%, avoid the refrigerating capacity of unit to regulate the dead band effectively, satisfied user's ultra-low load even unit still can stable operation when zero load demand.
Description of drawings
Fig. 1 is a structural representation of the present utility model
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described:
As shown in Figure 1, the utility model comprises the refrigeration cycle that is made of compressor 1, condenser 2, expansion valve 3 and evaporimeter 4, be connected with a pipeline 6 in the gas exhaust piping between compressor 1 and condenser 2, the other end of pipeline is connected between expansion valve and the evaporimeter, and a hot gas bypass valve 5 is housed in pipeline.
When working, along with the user's request load increases, regulate guide vane aperture or spool position more than the air-breathing volume flow of minimum, air-breathing volume flow is increased, the unit refrigerating capacity increases; When the work of the air-breathing volume flow point of minimum, the unit refrigerating capacity is not subjected to air-breathing volume flow effect, and changes with the load of user's request, has finally realized satisfying customer charge from 0～100% demand that changes for two.
Unit operation is when the air-breathing volume flow point of minimum, open hot gas bypass valve 5, part compressor air-discharging is bypassed to the entrance side of evaporimeter 4 after by hot gas bypass valve 5 throttling step-downs, and another part compressor air-discharging enters the entrance side of evaporimeter 4 behind condenser 2 and expansion valve 3.This moment, two parts cold-producing medium fully mixed, the gas-liquid two-phase cold-producing medium that flows through expansion valve 3 absorbs the heat and the evaporation of the high-temperature gas cold-producing medium that flows through hot gas bypass valve 5, flowing through the cold-producing medium of expansion valve 3 and the heat exchange amount of chilled water will reduce, when the cold-producing medium heat by hot gas bypass valve 5 is equal to cold-producing medium cold by expansion valve 3, the heat exchange amount of cold-producing medium and chilled water equals zero, and has promptly realized the demand that unit still can stable operation when ultra-low load even the zero load condition.
Claims (1)
1. the cold water source pump of two expansion valve mechanisms, it comprises the refrigeration cycle that is made of compressor, condenser, expansion valve and evaporimeter, it is characterized in that: be connected with a pipeline in the gas exhaust piping between compressor and condenser, the other end of pipeline is connected between expansion valve and the evaporimeter, and a hot gas bypass valve is housed in pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205313777U CN201844626U (en) | 2010-09-16 | 2010-09-16 | Water chiller set adaptive to ultra-low load stable operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205313777U CN201844626U (en) | 2010-09-16 | 2010-09-16 | Water chiller set adaptive to ultra-low load stable operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844626U true CN201844626U (en) | 2011-05-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205313777U Expired - Lifetime CN201844626U (en) | 2010-09-16 | 2010-09-16 | Water chiller set adaptive to ultra-low load stable operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844626U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721174A (en) * | 2012-06-14 | 2012-10-10 | 华南理工大学 | Household variable-capacitance stepless regulation instant heat-pump water heater |
| CN102980335A (en) * | 2012-09-25 | 2013-03-20 | 无锡溥汇机械科技有限公司 | Variable-frequency heat exchange system |
| CN103697626A (en) * | 2013-12-28 | 2014-04-02 | 苏州市东华试验仪器有限公司 | Refrigerating device |
| CN106440440A (en) * | 2016-08-31 | 2017-02-22 | 珠海格力电器股份有限公司 | Hot-gas bypass control method and system for screw type unit |
| CN106766302A (en) * | 2017-02-20 | 2017-05-31 | 英得艾斯（上海）冷冻空调有限公司 | A kind of handpiece Water Chilling Units and its control method |
| CN107499492A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Handpiece Water Chilling Units and its control method |
| CN108444122A (en) * | 2018-02-09 | 2018-08-24 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN109915951A (en) * | 2019-02-25 | 2019-06-21 | 珠海格力电器股份有限公司 | Unit and control method are adjusted with 0 ~ 100% output load regulating power center air |
| CN110486984A (en) * | 2019-08-14 | 2019-11-22 | 珠海格力电器股份有限公司 | A kind of method and unit that can freely regulate and control cold and hot ability |
| CN112484269A (en) * | 2020-11-11 | 2021-03-12 | 珠海格力电器股份有限公司 | Cold quantity distribution method and device, host and air conditioner |
| WO2021051699A1 (en) * | 2019-09-16 | 2021-03-25 | 珠海格力电器股份有限公司 | Zero-load output non-stop control method and apparatus, and unit |
-
2010
- 2010-09-16 CN CN2010205313777U patent/CN201844626U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721174A (en) * | 2012-06-14 | 2012-10-10 | 华南理工大学 | Household variable-capacitance stepless regulation instant heat-pump water heater |
| CN102980335A (en) * | 2012-09-25 | 2013-03-20 | 无锡溥汇机械科技有限公司 | Variable-frequency heat exchange system |
| CN102980335B (en) * | 2012-09-25 | 2015-06-03 | 无锡溥汇机械科技有限公司 | Variable-frequency heat exchange system |
| CN103697626A (en) * | 2013-12-28 | 2014-04-02 | 苏州市东华试验仪器有限公司 | Refrigerating device |
| CN106440440B (en) * | 2016-08-31 | 2018-12-04 | 珠海格力电器股份有限公司 | The hot-gas bypass control method and system of screw unit |
| CN106440440A (en) * | 2016-08-31 | 2017-02-22 | 珠海格力电器股份有限公司 | Hot-gas bypass control method and system for screw type unit |
| CN106766302A (en) * | 2017-02-20 | 2017-05-31 | 英得艾斯（上海）冷冻空调有限公司 | A kind of handpiece Water Chilling Units and its control method |
| CN106766302B (en) * | 2017-02-20 | 2023-09-08 | 英得艾斯（上海）冷冻空调有限公司 | Water chilling unit and control method thereof |
| CN107499492A (en) * | 2017-07-19 | 2017-12-22 | 珠海格力电器股份有限公司 | Handpiece Water Chilling Units and its control method |
| WO2019153881A1 (en) * | 2018-02-09 | 2019-08-15 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN108444122A (en) * | 2018-02-09 | 2018-08-24 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN109915951A (en) * | 2019-02-25 | 2019-06-21 | 珠海格力电器股份有限公司 | Unit and control method are adjusted with 0 ~ 100% output load regulating power center air |
| CN110486984A (en) * | 2019-08-14 | 2019-11-22 | 珠海格力电器股份有限公司 | A kind of method and unit that can freely regulate and control cold and hot ability |
| WO2021051699A1 (en) * | 2019-09-16 | 2021-03-25 | 珠海格力电器股份有限公司 | Zero-load output non-stop control method and apparatus, and unit |
| CN112484269A (en) * | 2020-11-11 | 2021-03-12 | 珠海格力电器股份有限公司 | Cold quantity distribution method and device, host and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |
|
| CX01 | Expiry of patent term |