CN101038116A - Gas-Liquid separating evaporator - Google Patents
Gas-Liquid separating evaporator Download PDFInfo
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- CN101038116A CN101038116A CN 200710063071 CN200710063071A CN101038116A CN 101038116 A CN101038116 A CN 101038116A CN 200710063071 CN200710063071 CN 200710063071 CN 200710063071 A CN200710063071 A CN 200710063071A CN 101038116 A CN101038116 A CN 101038116A
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Abstract
A gas-liquid separation evaporator relates to heat transfer technology field, especially relates to evaporator technology field. The evaporator is characterized by including a gas-liquid separator connected to an air input pipe and an evaporator heat exchange section connected to an air output pipe. The gas-liquid separator is connected with the evaporator heat exchange section by a liquid separation pipe. The top of the gas-liquid separator is connected with a section of steam bypass pipe which is connected to the air output pipe at another end. A throttle device is mounted on the steam bypass pipe. The gas-liquid separator can be mounted with a liquid level sensor or liquid dryness measure device, the control signal output end of the sensor or measure device is connected to the control signal input end of the throttle device; a pressure sensor can be mounted in the front section at the connection place between the air output pipe and the steam bypass pipe, the control signal output end of the pressure sensor is connected to the control signal input end of the throttle device. The present invention can export part or all refrigerant gas through bypass, improves the heat exchange efficiency and reduces the flow lost of the refrigerant.
Description
Technical field:
Gas-Liquid separating evaporator relates to the heat transfer technology field, relates in particular to the vaporizer technology field.
Background technology:
The gas-liquid two-phase cold-producing medium of low mass dryness fraction enters and carries out heat exchange in the evaporimeter, is evaporated to saturated vapor through heat absorption and flows out.Because cold-producing medium is constantly heat absorption evaporation during along channel flow in evaporimeter, causes the gas phase share to increase, and the contribution of gas phase share heat exchanging is much smaller than the liquid phase share, but because its volume that increases sharply causes the cold-producing medium flow velocity to rise, causes linear loss to increase.At present, in existing evaporimeter use, the general increase branch way that adopts reduces the refrigerant side pressure loss, but can cause flow distribution of refrigerant inhomogeneous again because increase the branch way, it is insufficient to cause heat exchange area to utilize, the gas phase share still will be occupied corresponding heat exchange area simultaneously, reduces heat exchange efficiency.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, design a kind of evaporimeter, cold-producing medium gas phase share partly or entirely can be derived from bypass, improved heat exchange efficiency, reduce the flow losses of refrigerant side with gas-liquid separation and bypass characteristics.
The invention is characterized in, containing the gas-liquid separator (2), the evaporimeter heat exchanging segment (5) of connection escape pipe (8), the described gas-liquid separator (2) that connect air inlet pipe (1) is connected with evaporimeter heat exchanging segment (5) by separating tube (3), it is characterized in that, top at described gas-liquid separator (2) connects one section steam bypass pipe, the other end of described steam bypass pipe is communicated with described escape pipe (8), and throttling arrangement (6) is housed on described steam bypass pipe.
On described gas-liquid separator (2) liquid level sensor is housed, described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described liquid level sensor connects the control signal input of described throttling arrangement (6).
Fluid dryness measurement device is housed on described gas-liquid separator (2), and described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described fluid dryness measurement device connects the control signal input of described throttling arrangement (6).
The leading portion that is communicated with the place at described escape pipe (8) with the steam bypass pipe is equipped with a pressure sensor (10), described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described pressure sensor (10) connects the control signal input of described throttling arrangement (6).
Evidence, the present invention can make part or all of gaseous refrigerant separate by bypass channel, have reduced gaseous refrigerant in the flow losses that heat exchanging segment flows and causes, and have improved the heat exchange efficiency of evaporimeter.
Description of drawings:
Fig. 1 is a high-efficiency evaporator schematic diagram with gas-liquid separation and bypass characteristics of the present invention.
Fig. 2 has the high-efficiency evaporator schematic diagram of gas-liquid separation and bypass characteristics for of the present invention another.
Fig. 3 is a high-efficiency evaporator schematic diagram with gas-liquid separation and bypass characteristics of the present invention.
Among the last figure, 1 be air inlet pipe, 2 for gas-liquid separator, 3 for the separating tube of gas-liquid separator, 4 for the steam bypass pipe leading portion of gas-liquid separator, 5 for the evaporimeter heat exchanging segment, 6 for throttling arrangement, 7 be that liquid level sensor or fluid dryness measurement device, 10 are pressure sensor for the steam bypass pipe back segment of gas-liquid separator, 8 is escape pipe, 9.
The specific embodiment:
Below in conjunction with accompanying drawing concrete enforcement of the present invention is further described.
As shown in Figure 1, the evaporimeter of the present invention's proposition comprises separating tube 3, the steam bypass pipe leading portion 4 of gas-liquid separator, evaporimeter heat exchanging segment 5, throttling arrangement 6, the steam bypass pipe back segment 7 of gas-liquid separator, the escape pipe 8 of air inlet pipe 1, gas-liquid separator 2, gas-liquid separator.Air inlet pipe 1 is joined with the import of gas-liquid separator 2, gas-liquid separator 2 vertically is arranged in before the evaporimeter heat exchanging segment 5, separating tube 3 is installed in the bottom of gas-liquid separator 2, separating tube 3 is connected with the import of evaporimeter heat exchanging segment 5, the outlet of evaporimeter heat exchanging segment 5 is connected with escape pipe 8, steam bypass pipe leading portion 4 is installed in the top of gas-liquid separator 2, steam bypass pipe leading portion 4 is connected with the import of throttling arrangement 6, the outlet of throttling arrangement 6 is connected with 7 imports of steam bypass pipe back segment, and steam bypass pipe back segment 7 is communicated with the escape pipe 8 of evaporator outlet.Throttling arrangement 6 can be manual or nonadjustable.
As shown in Figure 2, the another kind of evaporimeter of the present invention is on the basis of evaporation structure shown in Figure 1, liquid level sensor 9 has been installed on the sidewall of gas-liquid separator 2, liquid level sensor 9 is gathered liquid level information in the gas-liquid separator 2, and information reached throttling arrangement 6 to regulate throttling arrangement 6, make throttling arrangement outlet pressure and evaporimeter heat exchanging segment outlet pressure mate, throttling arrangement 6 herein is controlled.Liquid level sensor liquid can change fluid dryness measurement device into, and this device is regulated throttling arrangement 6 according to fluid mass dryness fraction information.
As shown in Figure 3, it is on the basis of evaporation structure shown in Figure 1 that the present invention also has a kind of evaporimeter, the pressure sensor 10 of knowing clearly is installed, before this sensor should be contained in escape pipe 8 and the steam bypass pipe is communicated with the place on escape pipe 8.Pressure sensor 10 is gathered escape pipe 8 internal pressure signals, and information is reached throttling arrangement 6 to regulate throttling arrangement 6, makes throttling arrangement outlet pressure and evaporimeter heat exchanging segment outlet pressure mate, and throttling arrangement 6 herein is controlled.
The gas-liquid two-phase cold-producing medium of low mass dryness fraction is entered by air inlet pipe 1 and carries out gas-liquid separation in the gas-liquid separator 2, and the liquid refrigerant after the separation enters evaporimeter heat exchanging segment 5 through the separating tube 3 of gas-liquid separator and carries out evaporation and heat-exchange; Gaseous refrigerant after the separation is through steam bypass pipe leading portion 4 process throttling arrangements 6 throttlings of gas-liquid separator, cold-producing medium after the throttling flows to evaporimeter escape pipe 8 by steam bypass pipe back segment 7, converges in escape pipe 8 through the cold-producing medium of heat exchange and the cold-producing medium of process throttling.Select suitable throttling arrangement 6 (comprising non-adjustable throttling device and adjustable throttle device) for use, make gaseous refrigerant pass through part or all of by-pass throttle, flow to evaporimeter escape pipe 8 then.Also can by regulating throttling arrangement 6, make liquid refrigerant part by-passing passage according to actual needs to regulate the heat exchange amount.
The present invention has the following advantages:
1) the present invention separates gaseous refrigerant at the evaporator inlet place and is bypassed to evaporator outlet, has reduced gaseous refrigerant and has existed The flow losses that heat exchanging segment flows and causes.
2) owing to part or all of gaseous refrigerant by-passing passage, when the evaporimeter heat exchange area is constant, has reduced cold-producing medium and existed The through-current capacity of heat exchanging segment, thus the flow losses of cold-producing medium at heat exchanging segment reduced, and the while is owing to the cold-producing medium mass dryness fraction reduces, also Improved the heat exchange efficiency of evaporimeter.
3) because the heat exchange efficiency of evaporimeter is improved, under the prerequisite of identical heat exchange amount, can reduce the heat-transfer surface of evaporimeter Long-pending, reduce the evaporation structure size, and bypass segment can be arranged in different spaces with the heat exchanging segment part, be more suitable in right The occasion that the evaporimeter requirements of installation space is higher.
4) owing to reduced the import mass dryness fraction of evaporimeter heat exchanging segment, the distribution ratio of refrigerant flow in the heat exchanging segment shunt is easier to.
5) at bypass channel throttling arrangement is installed, can be mated the refrigerant pressure of bypass outlet and heat exchanging segment outlet.
6) by the throttling arrangement in the bypass channel regulate to be installed, can also make all or part of heat exchanging segment path of walking of liquid refrigerant.
Claims (4)
1, gas-Liquid separating evaporator, containing the gas-liquid separator (2), the evaporimeter heat exchanging segment (5) of connection escape pipe (8), the described gas-liquid separator (2) that connect air inlet pipe (1) is connected with evaporimeter heat exchanging segment (5) by separating tube (3), it is characterized in that, top at described gas-liquid separator (2) connects one section steam bypass pipe, the other end of described steam bypass pipe is communicated with described escape pipe (8), and throttling arrangement (6) is housed on described steam bypass pipe.
2, gas-Liquid separating evaporator as claimed in claim 1, it is characterized in that, on described gas-liquid separator (2), liquid level sensor is housed, described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described liquid level sensor connects the control signal input of described throttling arrangement (6).
3, gas-Liquid separating evaporator as claimed in claim 1, it is characterized in that, fluid dryness measurement device is housed on described gas-liquid separator (2), described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described fluid dryness measurement device connects the control signal input of described throttling arrangement (6).
4, gas-Liquid separating evaporator as claimed in claim 1, it is characterized in that, the leading portion that is communicated with the place at described escape pipe (8) with the steam bypass pipe is equipped with a pressure sensor (10), described throttling arrangement (6) is controlled throttling arrangement, and the control signal output of described pressure sensor (10) connects the control signal input of described throttling arrangement (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100630716A CN100483047C (en) | 2007-01-26 | 2007-01-26 | Gas-Liquid separating evaporator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100630716A CN100483047C (en) | 2007-01-26 | 2007-01-26 | Gas-Liquid separating evaporator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101038116A true CN101038116A (en) | 2007-09-19 |
| CN100483047C CN100483047C (en) | 2009-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100630716A Active CN100483047C (en) | 2007-01-26 | 2007-01-26 | Gas-Liquid separating evaporator |
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| CN (1) | CN100483047C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563982A (en) * | 2012-02-14 | 2012-07-11 | 温岭市钱江化工机械有限公司 | Evaporating plant in refrigerating system |
| CN104422202A (en) * | 2013-08-22 | 2015-03-18 | 财团法人工业技术研究院 | Heat exchanger, heat engine circulating system and control method thereof |
| CN105318606A (en) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | Indoor unit and outdoor unit of air conditioner as well as air conditioner |
| CN105485951A (en) * | 2015-12-15 | 2016-04-13 | 昆明东启科技股份有限公司 | Carbon dioxide heat pump system for improving heating efficiency by utilizing gas-liquid two-phase separator |
| CN106895611A (en) * | 2015-12-18 | 2017-06-27 | 清华大学 | A kind of distribution method of dry evaporator and refrigerant |
| CN107917523A (en) * | 2017-10-25 | 2018-04-17 | 西安交通大学 | A kind of outdoor heat exchanger for heat pump and its control method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317478A (en) * | 1989-06-14 | 1991-01-25 | Nippondenso Co Ltd | Refrigerating cycle apparatus |
| JP2002243284A (en) * | 2001-02-20 | 2002-08-28 | Fujitsu General Ltd | Air conditioner |
| CN1441215A (en) * | 2003-03-27 | 2003-09-10 | 上海交通大学 | Vapor-liquid separation type two-phase liquid separator |
| JP2006118799A (en) * | 2004-10-21 | 2006-05-11 | Denso Corp | Refrigeration cycle |
| JP2006308230A (en) * | 2005-04-28 | 2006-11-09 | Denso Corp | Refrigerating cycle control device |
-
2007
- 2007-01-26 CN CNB2007100630716A patent/CN100483047C/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563982A (en) * | 2012-02-14 | 2012-07-11 | 温岭市钱江化工机械有限公司 | Evaporating plant in refrigerating system |
| CN104422202A (en) * | 2013-08-22 | 2015-03-18 | 财团法人工业技术研究院 | Heat exchanger, heat engine circulating system and control method thereof |
| TWI579520B (en) * | 2013-08-22 | 2017-04-21 | 財團法人工業技術研究院 | Heat exchanger, heat engine system and control method using the same |
| CN105318606A (en) * | 2014-07-29 | 2016-02-10 | 青岛海信日立空调系统有限公司 | Indoor unit and outdoor unit of air conditioner as well as air conditioner |
| CN105485951A (en) * | 2015-12-15 | 2016-04-13 | 昆明东启科技股份有限公司 | Carbon dioxide heat pump system for improving heating efficiency by utilizing gas-liquid two-phase separator |
| CN106895611A (en) * | 2015-12-18 | 2017-06-27 | 清华大学 | A kind of distribution method of dry evaporator and refrigerant |
| CN107917523A (en) * | 2017-10-25 | 2018-04-17 | 西安交通大学 | A kind of outdoor heat exchanger for heat pump and its control method |
| CN107917523B (en) * | 2017-10-25 | 2019-12-20 | 西安交通大学 | Outdoor heat exchanger for heat pump and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100483047C (en) | 2009-04-29 |
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