CN111503938A - Gas-liquid separator jet air-supplementing heat pump system - Google Patents
Gas-liquid separator jet air-supplementing heat pump system Download PDFInfo
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- CN111503938A CN111503938A CN202010372318.8A CN202010372318A CN111503938A CN 111503938 A CN111503938 A CN 111503938A CN 202010372318 A CN202010372318 A CN 202010372318A CN 111503938 A CN111503938 A CN 111503938A
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- gas
- liquid separator
- compressor
- evaporator
- outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B31/00—Compressor arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Power Engineering (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention relates to the technical field of energy-saving devices, and provides an economizer injection air-supplementing heat pump system which comprises a compressor, wherein the compressor is respectively connected with a condenser and an evaporator; the outlet of the condenser is connected with an economizer; the economizer is provided with an auxiliary channel and a main channel, and inlets of the auxiliary channel and the main channel are connected with the condenser in series; the outlet of the main channel of the economizer is connected with a gas-liquid separator through a throttle valve; the inlet of the evaporator is connected with the liquid phase outlet of the gas-liquid separator; the outlet of the bypass channel of the economizer and the gas-phase outlet of the gas-liquid separator are respectively connected with the working fluid inlet and the injection fluid inlet of the ejector; the mixed fluid outlet of the ejector is connected with the compressor. Therefore, the invention utilizes the ejector to recover the useful energy lost by the expansion valve,realizes the reduction of the dryness of the refrigerant at the inlet of the evaporator, and improves
Efficiency and evaporator heat exchange efficiency, reduce compressor exhaust superheat degree. The method is beneficial to the high-efficiency operation of the low-temperature high-pressure-ratio working condition unit and the reduction and intensification development of the unit.
Description
Technical Field
The invention belongs to the technical field of energy-saving devices, and particularly relates to a jet air supplementing heat pump system of a gas-liquid separator.
Background
The energy consumption of buildings is mainly used for air conditioning and heating, and how to improve the resource utilization rate and reduce the equipment cost is the current direction of energy conservation, emission reduction and intensive system development. However, for the current heat pump system, the attenuation of the low-temperature heating performance is a problem of clean renewable energy utilization.
The air injection enthalpy increasing technology is produced accordingly, compared with a traditional single-machine compression system, the system output load and the energy efficiency ratio COP are improved obviously under the extreme working condition, however, an expansion valve is arranged at the inlet of an evaporator, gas-liquid two-phase flow enters the evaporator, namely, the dryness is greater than 0, a general dry evaporator is divided into a superheat area and a two-phase area, the heat exchange quantity of the superheat area accounts for about 5% of the total heat exchange quantity and occupies 20% of the area of a heat exchanger, meanwhile, superheated gas can generate overheating loss, and the improvement of the comprehensive performance of the system is not facilitated.
Therefore, in view of the high phase-change heat transfer coefficient, it is a difficult problem how to effectively reduce the dryness of the evaporator inlet, improve the heat transfer efficiency and reduce the overheating loss.
In view of the above, the prior art is obviously inconvenient and disadvantageous in practical use, and needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks, the present invention provides a vapor-liquid separator jet air make-up heat pump system, which is connected to a vapor-liquid separator through a condenser and an evaporator respectively; and an ejector is arranged to be connected with the compressor. The recoverable part of useful energy lost by the expansion valve of the ejector is utilized to realize the reduction of the dryness of the refrigerant at the inlet of the evaporator and improve
Efficiency and evaporimeter heat exchange efficiency, equal evaporimeter refrigerating capacity can reduce heat transfer area, because of the ejector export refrigerant steam reduces to some extent for former tonifying qi temperature, its compressor exhaust superheat degree will reduce. The invention provides a solution for stable and efficient operation of the unit under the working condition of low temperature and high pressure ratio and provides conditions for reduction and intensive development of the unit.
In order to achieve the aim, the invention provides a gas-liquid separator jet air-supplementing heat pump system which comprises a compressor, a condenser and an evaporator, wherein the compressor is respectively connected with the condenser and the evaporator; the outlet of the condenser is connected with a first gas-liquid separator; an inlet of the evaporator is connected with a liquid phase outlet of the second gas-liquid separator; a throttle valve is connected between the first gas-liquid separator and the second gas-liquid separator; gas phase outlets of the first gas-liquid separator and the second gas-liquid separator are respectively connected with a working fluid inlet and an injection fluid inlet of the ejector; the mixed fluid outlet of the ejector is connected with a compressor.
According to the gas-liquid separator jet air-supplementing heat pump system, the compressor is an enhanced vapor injection compressor.
According to the gas-liquid separator jet air-supplementing heat pump system, a main air suction port of the jet enthalpy-increasing compressor is connected with the evaporator, and a secondary air suction port is connected with the ejector.
According to the gas-liquid separator jet air supplementing heat pump system, the outlet of the condenser is connected with the first gas-liquid separator through the throttle valve.
According to the gas-liquid separator jet air supplementing heat pump system, the first gas-liquid separator and the second gas-liquid separator are flash evaporators.
According to the gas-liquid separator jet air-supplementing heat pump system, the condenser is air-cooled or water-cooled.
The invention aims to provide a jet air-supplementing heat pump system of a gas-liquid separator, which is respectively connected with the gas-liquid separator through a condenser and an evaporator; and an ejector is arranged to be connected with the compressor. The recoverable part of useful energy lost by the expansion valve of the ejector is utilized to realize the reduction of the dryness of the refrigerant at the inlet of the evaporator and improve
Efficiency and evaporimeter heat exchange efficiency, equal evaporimeter refrigerating capacity can reduce heat transfer area, because of the ejector export refrigerant steam reduces to some extent for former tonifying qi temperature, its compressor exhaust superheat degree will reduce. The invention provides a solution for the stable and efficient operation of the low-temperature high-pressure-ratio working condition unit and also provides a solution for the reduction and intensive development of the unitThe conditions are supplied.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure: 1-compressor, 2-condenser, 3-evaporator, 4-ejector, 5-throttle valve, 6-first gas-liquid separator, 61-second gas-liquid separator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, it being understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Referring to fig. 1, the invention provides a gas-liquid separator jet air make-up heat pump system, which comprises a compressor 1, wherein the compressor 1 is respectively connected with a condenser 2 and an evaporator 3; the outlet of the condenser 2 is connected with a first gas-liquid separator 6; the inlet of the evaporator 3 is connected with the liquid phase outlet of the second gas-liquid separator 61; a throttle valve 5 is connected between the first gas-liquid separator 6 and the second gas-liquid separator 61; the gas phase outlets of the first gas-liquid separator 6 and the second gas-liquid separator 61 are respectively connected with the working fluid inlet and the injection fluid inlet of the ejector 4; the mixed fluid outlet of the ejector 4 is connected with the compressor 1.
Preferably, the compressor 1 of the invention is an enhanced vapor injection compressor; furthermore, a main air suction port of the enhanced vapor injection compressor is connected with the evaporator 3, and a secondary air suction port is connected with the ejector 4.
The gas in the second gas-liquid separator 61 enters the injection fluid inlet of the ejector 4 as low-pressure low-temperature steam; the gas in the first gas-liquid separator 6 enters the working fluid inlet of the ejector 4 as high-pressure, high-temperature steam. The mixed fluid flows out from the mixed fluid outlet and is sprayed into a secondary air inlet in the middle of the compressor, and the pressure and the temperature of the mixed fluid (namely, the refrigerant sprayed into the cavity of the compressor) are lower than saturation state parameters in the first gas-liquid separator 6.
Preferably, the outlet of the condenser 2 is connected to a first gas-liquid separator 6 through a throttle valve 5, the throttled gas-liquid two-phase high-pressure gas-phase refrigerant separated by the first gas-liquid separator 6 enters the working fluid inlet of the ejector 4, and the liquid at the bottom of the first gas-liquid separator 6 enters a second gas-liquid separator 61 through the throttle valve 5 for further gas-liquid separation.
As an example, the first gas-liquid separator 6 and the second gas-liquid separator 61 of the present invention are both flash evaporators.
As an example, the condenser 2 is air-cooled or water-cooled.
The liquid refrigerant led out from the condenser 2 is subjected to two-stage separation by the first gas-liquid separator 6 and the second gas-liquid separator 61, so that a large amount of gas phase in the refrigerant is separated out and directly enters the compressor 1 through the ejector 4; and liftThe pressure of low-pressure refrigerant steam at the inlet of the compressor 1 is increased, part of useful energy is recovered, the compression work of the compressor on the part of steam is saved, the unit is greatly improved
Efficiency.
The refrigerant effectively reduces the dryness of the refrigerant at the inlet of the evaporator 3 after the separation, promotes the heat exchange efficiency of the evaporator 3, and effectively reduces the heat exchange area and volume.
The invention provides a solution for stable and efficient operation of the unit under the working condition of low temperature and high pressure ratio and provides conditions for reduction and intensive development of the unit.
In summary, the present invention provides a vapor-liquid separator jet air-make heat pump system, which is connected to a vapor-liquid separator through a condenser and an evaporator respectively; and an ejector is arranged to be connected with the compressor. The recoverable part of useful energy lost by the expansion valve of the ejector is utilized to realize the reduction of the dryness of the refrigerant at the inlet of the evaporator and improve
Efficiency and evaporimeter heat exchange efficiency, equal evaporimeter refrigerating capacity can reduce heat transfer area, because of the ejector export refrigerant steam reduces to some extent for former tonifying qi temperature, its compressor exhaust superheat degree will reduce. The invention provides a solution for stable and efficient operation of the unit under the working condition of low temperature and high pressure ratio and provides conditions for reduction and intensive development of the unit.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The jet air-supplementing heat pump system of the gas-liquid separator is characterized by comprising a compressor, wherein the compressor is respectively connected with a condenser and an evaporator; the outlet of the condenser is connected with a first gas-liquid separator; an inlet of the evaporator is connected with a liquid phase outlet of the second gas-liquid separator; a throttle valve is connected between the first gas-liquid separator and the second gas-liquid separator; gas phase outlets of the first gas-liquid separator and the second gas-liquid separator are respectively connected with a working fluid inlet and an injection fluid inlet of the ejector; the mixed fluid outlet of the ejector is connected with a compressor.
2. The gas-liquid separator jet air make-up heat pump system of claim 1, wherein the compressor is a jet enthalpy-increasing compressor.
3. The gas-liquid separator jet air-supplementing heat pump system according to claim 2, wherein a main air suction port of the enhanced vapor injection compressor is connected with the evaporator, and a secondary air suction port is connected with the ejector.
4. The vapor-liquid separator jet make-up air heat pump system of claim 1, wherein the outlet of the condenser is connected to the first vapor-liquid separator through a throttle valve.
5. The gas-liquid separator jet air compensation heat pump system according to any one of claims 1 to 4, wherein the first gas-liquid separator and the second gas-liquid separator are flash evaporators.
6. The gas-liquid separator jet air make-up heat pump system according to claim 5, wherein the condenser is air-cooled or water-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010372318.8A CN111503938A (en) | 2020-05-06 | 2020-05-06 | Gas-liquid separator jet air-supplementing heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010372318.8A CN111503938A (en) | 2020-05-06 | 2020-05-06 | Gas-liquid separator jet air-supplementing heat pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111503938A true CN111503938A (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010372318.8A Withdrawn CN111503938A (en) | 2020-05-06 | 2020-05-06 | Gas-liquid separator jet air-supplementing heat pump system |
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| CN (1) | CN111503938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116163958A (en) * | 2023-01-13 | 2023-05-26 | 上海诺通新能源科技有限公司 | Vapor compressor system and control method thereof |
-
2020
- 2020-05-06 CN CN202010372318.8A patent/CN111503938A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116163958A (en) * | 2023-01-13 | 2023-05-26 | 上海诺通新能源科技有限公司 | Vapor compressor system and control method thereof |
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Application publication date: 20200807 |