CN103591740A - Throttling device for centrifugal heat pump unit - Google Patents
Throttling device for centrifugal heat pump unit Download PDFInfo
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- CN103591740A CN103591740A CN201310650351.2A CN201310650351A CN103591740A CN 103591740 A CN103591740 A CN 103591740A CN 201310650351 A CN201310650351 A CN 201310650351A CN 103591740 A CN103591740 A CN 103591740A
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- throttling
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- stop valve
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- 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 invention discloses a throttling device for a centrifugal heat pump unit. The throttling device is characterized by comprising an adjustable throttling valve (1). The adjustable throttling valve (1) is communicated with a throttling orifice plate (2) through pipelines, a first stop valve (3), an electronic expansion valve (4) and a second stop valve (5) are communicated through pipelines, the adjustable throttling valve (1) and the throttling orifice plate (2) are communicated in series and then communicated with the first stop valve (3), the electronic expansion valve (4) and the second stop valve (5) in parallel through pipelines, and a liquid level sensor (6) is connected with the electronic expansion valve (4) through a data line. The throttling device is simple in structure, low in cost, convenient to use, long in service life, and capable of meeting the working medium throttling requirement of the centrifugal heat pump unit both in the cooling process in summer and in the heating process in winter.
Description
Technical field:
The present invention relates to a kind of throttling arrangement, is that a kind of applicable centrifugal source pump all can guarantee reasonable liquid level under the various operating modes of cooling and warming specifically, the throttling arrangement that unit all can be efficiently and smoothly operated.
Background technology:
At present, the source pump that has a refrigeration and heat-production functions is mainly screw rod type heat pump machine unit.For protection of the environment, the saving energy, numerous producers develop the centrifugal source pump with peak efficiency.Centrifugal refrigerating machines is general adopts fixedly orifice plate as throttling arrangement, because the change of centrifugal refrigerating machines condition range is less, and throttling requirement when fixedly orifice plate substantially can meet unit and freezes.If centrifugal source pump adopts fixedly orifice plate as throttling arrangement, because the change of source pump condition range is larger, fixed restriction orifice plate can cause feed flow deficiency or the high-low pressure phenomenon of collaborating, and unit can not stable and high effective operation, the throttling requirement in the time of can not meeting source pump variable working condition.Centrifugal source pump adopts float-ball type throttling arrangement to have the shortcoming of easy damage, unfavorable maintenance; Centrifugal source pump adopts Large Electric choke valve to have and involves great expense, uppity shortcoming.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art and provide a kind of simple in structure, with low cost, easy to use, cost is low, long service life, all can meet the centrifugal source pump throttling arrangement of centrifugal source pump throttling requirement when summer refrigeration, winter heating.
Object of the present invention can reach by following measure: a kind of centrifugal source pump throttling arrangement, it is characterized in that it comprises adjustable throttling, adjustable throttling is communicated with restricting orifice by pipeline, the first stop valve, electric expansion valve, the second stop valve pass through pipeline connection, after adjustable throttling, restricting orifice series connection are communicated with, by pipeline, be communicated with the first stop valve, electric expansion valve, the second stop valve parallel connection, liquid level sensor is connected with electric expansion valve by data wire.
The present invention can produce following good effect compared with the prior art: the present invention adopts adjustable throttling, by regulating its aperture to make each container of centrifugal source pump under the various operating modes of cooling and warming all can maintain rational liquid level, overcome the narrow shortcoming of single fixedly orifice plate adjustable range.Working medium forms stream-liquid two-phase flow after adjustable throttling throttling, then enters restricting orifice, has expanded the throttling adjustable range of restricting orifice.On container, liquid level sensor is controlled the open degree of electric expansion valve, guarantees all can maintain accurately at certain fluctuation of operating conditions range content device, rational liquid level, thereby guarantee centrifugal source pump high efficiency smooth, moves.Throttling arrangement is comprised of the parts of comparative maturity, with low cost, reliability and durability.Throttling arrangement is applied to, on the connecting line between container, compare convenient operation with floating ball throttle valve, is beneficial to maintenance.
Accompanying drawing explanation:
Fig. 1 is structural representation of the present invention;
Fig. 2 is use connection layout of the present invention.
The specific embodiment: the specific embodiment of the present invention is described in further detail below in conjunction with accompanying drawing:
Embodiment: a kind of centrifugal throttling arrangement (referring to Fig. 1, Fig. 2) for source pump, it comprises adjustable throttling 1, adjustable throttling 1 connects restricting orifice 2 by pipeline, restricting orifice 2 connects the first stop valve 3 by pipeline, the first stop valve 3 is by pipeline connecting electronic expansion valve 4, electric expansion valve 4 connects the second stop valve 5, the second stop valves 5 by pipeline and connects adjustable throttling 1 by pipeline, and electric expansion valve 4 is connected with liquid level sensor 6 by data wire.After adjustable throttling 1, restricting orifice 2 series connection are communicated with, be communicated with the first stop valve 3, electric expansion valve 4, the second stop valve 5 parallel connections, adjustable throttling 1, restricting orifice 2 and the first stop valve 3, electric expansion valve 4, the second stop valve 5 form shunt circuits.Adjustable throttling 1 is connected with restricting orifice 2, forms main throttling pipeline, and electric expansion valve 4 is in parallel with this main throttling pipeline, as auxiliary throttling pipeline.The open degree of electric expansion valve 4 is controlled by liquid level sensor 6, and liquid level sensor 6 detects associated vessel 7(condenser or evaporimeters) liquid level, adjust the aperture of electric expansion valve 4.The first stop valve 3, the second stop valve 5 are convenient to the inspection and maintenance of electric expansion valve 4.
During use, between centrifugal source pump condenser and economizer, be respectively provided with a set of centrifugal source pump throttling arrangement between economizer and evaporimeter, adjustable throttling 1 and the pipeline between the second stop valve 5 of the throttling arrangement between condenser and economizer are connected with the condenser liquid outlet of centrifugal source pump, restricting orifice 2 is connected with the economizer inlet of centrifugal source pump with the pipeline between the first stop valve 3, form the main throttling pipeline of working medium from condenser to economizer, liquid level sensor 6 is connected with condenser, detects the liquid level of condenser.Adjustable throttling 1 and the pipeline between the second stop valve 5 of the throttling arrangement between economizer and evaporimeter are connected with the economizer liquid outlet of centrifugal source pump, restricting orifice 2 is connected with the evaporimeter inlet of centrifugal source pump with the pipeline between the first stop valve 3, form the main throttling pipeline of working medium from economizer to evaporimeter, liquid level sensor 6 is connected with evaporimeter, detects the liquid level of evaporimeter.
When summer, centrifugal source pump was produced cold water, the Suck and exhaust pressure ratio of centrifugal compressor is compared with little and mass flow is larger, adjustable throttling 1 between condenser and economizer, between economizer and evaporimeter is opened larger opening, throttling requirement when the throttle part that adjustable throttling 1, restricting orifice 2 form can meet centrifugal source pump refrigeration substantially.Liquid level sensor 6 is controlled the aperture of electric expansion valve 4, and auxiliary participation throttling regulates, and guarantees that each tank fill level of unit is in more accurate, rational position.Winter is during centrifugal source pump hot water preparing, the Suck and exhaust pressure ratio of centrifugal compressor is compared with large and mass flow is less, adjustable throttling 1 between condenser and economizer, between economizer and evaporimeter is adjusted to less aperture, throttling requirement when the throttle part that adjustable throttling 1, restricting orifice 2 form can substantially meet centrifugal heat pump assembly and heats.Liquid level sensor 6 is controlled the aperture of electric expansion valve 4, and auxiliary participation throttling regulates, and guarantees that each tank fill level of unit is in rational position.Centrifugal source pump with throttling arrangement in refrigeration, heat and under two kinds of patterns, all make each tank fill level of unit be positioned at accurately reasonably position, guarantee unit efficiently, stably operation.
The present invention is applicable to the following two kinds of workings of centrifugal source pump:
1. cooling condition:
Centrifugal source pump is when cooling condition, and evaporimeter standard leaving water temperature is 7 ℃, 35 ℃ of left and right of condenser leaving water temperature, and centrifugal compressor gas compression is smaller.By centrifugal compressor operating characteristic, know the working range of compressor in low-pressure ratio, large flow.Now throttling arrangement will meet the requirement of low voltage difference, large flow.Under this operating mode, increase the aperture of adjustable throttling 1, the main orifice union that adjustable throttling 1, restricting orifice 2 series connection are formed meets the most of working medium flow requirement of centrifugal source pump under cooling condition.Electric expansion valve 4 is in parallel with it, is controlled the working medium flow of auxiliary adjustment source pump by liquid level sensor 6.
2. heating condition:
Centrifugal source pump is when heating condition, and evaporimeter leaving water temperature is 7 ℃ of left and right, and condenser leaving water temperature is generally 45 ℃ of left and right, and centrifugal compressor gas compression is higher.By centrifugal compressor operating characteristic, know the working range of compressor in high-pressure ratio, low discharge.Now throttling arrangement will meet the requirement of higher differential pressure, low discharge.Under this operating mode, reduce the aperture of adjustable throttling 1, the main orifice union that adjustable throttling 1, restricting orifice 2 series connection are formed meets the most of working medium flow requirement of centrifugal source pump under heating condition.Electric expansion valve 4 is in parallel with it, is controlled the working medium flow of auxiliary adjustment source pump by liquid level sensor 6.
Claims (1)
1. a centrifugal source pump throttling arrangement, it is characterized in that it comprises adjustable throttling (1), adjustable throttling (1) is communicated with restricting orifice (2) by pipeline, the first stop valve (3), electric expansion valve (4), the second stop valve (5) pass through pipeline connection, after adjustable throttling (1), restricting orifice (2) series connection are communicated with, by pipeline, be communicated with the first stop valve (3), electric expansion valve (4), the second stop valve (5) parallel connection, liquid level sensor (6) is connected with electric expansion valve (4) by data wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650351.2A CN103591740A (en) | 2013-12-06 | 2013-12-06 | Throttling device for centrifugal heat pump unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650351.2A CN103591740A (en) | 2013-12-06 | 2013-12-06 | Throttling device for centrifugal heat pump unit |
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| Publication Number | Publication Date |
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| CN103591740A true CN103591740A (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310650351.2A Pending CN103591740A (en) | 2013-12-06 | 2013-12-06 | Throttling device for centrifugal heat pump unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949368A (en) * | 2014-03-31 | 2015-09-30 | 荏原冷热系统株式会社 | Turbine refrigerator |
| CN105387644A (en) * | 2015-12-02 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Water chilling unit and control method thereof |
| CN105910229A (en) * | 2016-04-29 | 2016-08-31 | 青岛海尔空调电子有限公司 | Air-conditioning unit throttling control method and air-conditioning unit |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746596A (en) * | 2005-09-15 | 2006-03-15 | 上海交通大学 | Throttle orifice plate of transcritical carbon dioxide refrigerating system |
| EP1804010A2 (en) * | 2005-12-29 | 2007-07-04 | LG Electronics Inc. | Air conditioner and refrigerant control method thereof |
| CN201637208U (en) * | 2010-03-13 | 2010-11-17 | 山东欧锴空调科技有限公司 | Screw rod water source heat pump set |
| CN202757360U (en) * | 2012-09-04 | 2013-02-27 | 德州亚太集团有限公司 | Pore plate and expansion valve combination type refrigeration throttling device |
| CN203298540U (en) * | 2013-05-17 | 2013-11-20 | 山东格瑞德集团有限公司 | Centrifugal chilling unit |
| CN203629165U (en) * | 2013-12-06 | 2014-06-04 | 烟台蓝德空调工业有限责任公司 | Throttling device for centrifugal heat pump unit |
-
2013
- 2013-12-06 CN CN201310650351.2A patent/CN103591740A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1746596A (en) * | 2005-09-15 | 2006-03-15 | 上海交通大学 | Throttle orifice plate of transcritical carbon dioxide refrigerating system |
| EP1804010A2 (en) * | 2005-12-29 | 2007-07-04 | LG Electronics Inc. | Air conditioner and refrigerant control method thereof |
| CN201637208U (en) * | 2010-03-13 | 2010-11-17 | 山东欧锴空调科技有限公司 | Screw rod water source heat pump set |
| CN202757360U (en) * | 2012-09-04 | 2013-02-27 | 德州亚太集团有限公司 | Pore plate and expansion valve combination type refrigeration throttling device |
| CN203298540U (en) * | 2013-05-17 | 2013-11-20 | 山东格瑞德集团有限公司 | Centrifugal chilling unit |
| CN203629165U (en) * | 2013-12-06 | 2014-06-04 | 烟台蓝德空调工业有限责任公司 | Throttling device for centrifugal heat pump unit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104949368A (en) * | 2014-03-31 | 2015-09-30 | 荏原冷热系统株式会社 | Turbine refrigerator |
| CN105387644A (en) * | 2015-12-02 | 2016-03-09 | 重庆美的通用制冷设备有限公司 | Water chilling unit and control method thereof |
| CN105910229A (en) * | 2016-04-29 | 2016-08-31 | 青岛海尔空调电子有限公司 | Air-conditioning unit throttling control method and air-conditioning unit |
| CN105910229B (en) * | 2016-04-29 | 2019-07-05 | 青岛海尔空调电子有限公司 | A kind of air-conditioner set throttling control method and air-conditioner set |
| CN109469987A (en) * | 2018-09-26 | 2019-03-15 | 珠海格力电器股份有限公司 | Air-conditioning system and its control method |
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Application publication date: 20140219 |