CN105066277A - Air conditioner outdoor unit with refrigerant filling amount of lower portion liquid reduced and method of air conditioner outdoor unit - Google Patents
Air conditioner outdoor unit with refrigerant filling amount of lower portion liquid reduced and method of air conditioner outdoor unit Download PDFInfo
- Publication number
- CN105066277A CN105066277A CN201510468459.9A CN201510468459A CN105066277A CN 105066277 A CN105066277 A CN 105066277A CN 201510468459 A CN201510468459 A CN 201510468459A CN 105066277 A CN105066277 A CN 105066277A
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- China
- Prior art keywords
- liquid
- pipe
- outdoor unit
- air
- conditioner outdoor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F25B39/00—Evaporators; Condensers
Abstract
The invention discloses an air conditioner outdoor unit with the refrigerant filling amount of lower portion liquid reduced and a method of the air conditioner outdoor unit. The air conditioner outdoor unit comprises an upper-end air inlet pipe, a lower-end liquid pipe and a snake-shaped line type heat exchange pipe. The snake-shaped line type heat exchange pipe comprises a plurality of upper bent sections, perpendicular sections and lower bent sections. The ends of the lower bent sections are communicated with the lower-end liquid pipe through communication pipes. Only the initial ends of the upper bent sections are communicated with the upper-end air inlet pipe. The perpendicular sections are perpendicular to the horizontal plane. In the condensing process, condensate flows into the lower-end liquid pipe, so that the liquid phase accumulation amount in a condenser is reduced, and the refrigerant filling amount is reduced; the thickness of a liquid film in the snake-shaped line type heat exchange pipe is also reduced while the condensate flows to the lower-end liquid pipe, so that the heat exchange resistance is reduced, the heat exchange coefficient is increased, the total heat transfer coefficient is increased, and the overall efficiency is improved.
Description
Technical field
The present invention relates to field of Refrigeration and Air-conditioning, particularly relate to air-conditioner outdoor unit and method thereof that a kind of bottom separatory reduces filling quantity of refrigerant.
Background technology
China's Air Conditioning Industry Energy Efficiency Standard improves constantly, and also increases the volume of air-condition heat exchanger, filling quantity of refrigerant is also increased while adopting enhanced heat exchange technology to improve air-conditioning whole efficiency.The cold-producing medium of present use belongs to the hydrochlorofluorocarsolvent of ODS, according to the regulations such as " The Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution ", " ODS management rules ", the output of the hydrochlorofluorocarsolvent of ODS and use amount all need less gradually until completely superseded.At present, China is as HCFC22 producing country maximum in the world and use state, in superseded HCFCs cold-producing medium, face difficult challenge.Under the international environment so, how under the prerequisite not reducing heat exchange property and unit performance, the filling quantity reducing cold-producing medium becomes an important research topic.
Fig. 1 is current a kind of normal domestic use air conditioner outdoor unit structure figure.Air-conditioner outdoor unit heat exchanger tube is finned tube horizontal transverse-pipe and arranges, connects employing hosepipe type, air relies on blower fan at the outer forced convertion cooling heat transferring of pipe, cold-producing medium is compressed into high temperature and high pressure gas through compressor, and enter condenser and air heat-exchange, cold-producing medium pipe in by superheated vapor, gas-liquid two-phase condensing heat-exchange to subcooled liquid.Along with the carrying out of condensation process, constantly there is condensate liquid to be formed at wall, hinder the heat exchange of steam and wall, constitute the dominant thermal resistance of heat exchange, reduce the coefficient of heat transfer.Along with being on the increase of condensate liquid, the thickness of liquid film of wall constantly increases, and adds that vapor volume reduces the factor of the refrigerant flow rates reduction brought, condensation effect is sharply worsened.Air side, because in-tube condensation liquid thermal resistance causes the temperature of heat exchanger tube outer wall to decline, the driving force of heat exchange reduces, and the heat exchange amount of Forced Air Convection is reduced.In order to reach enough heat exchange amounts, need to increase heat exchange area to meet heat transfer requirements, adopting fin to increase, tube outside is long-pending improves cost of investment, and volume is also larger, and increase heat exchanger tube length and turn increase liquid phase burden, cause the filling quantity of air-conditioner set to increase.
The patent of invention " liquid separating air condenser " of the patent No. 200610113304.4.Utilize sectional steaming condensation, middle vapor-liquid separation automatically and discharge opeing, concentrate gathering condensate liquid to cross refrigeration technique, ensure that each tube side all enters with pure steam and is cooled, effectively reduce the thickness of liquid film in condensation process and eliminate disadvantageous two phase flow signals; Save material 30% compared with traditional condenser, reduce condenser and make and operating cost, but processed complex.
The utility model patent " a kind of air-cooled condenser " of Authorization Notice No. CN201926216U.-kind of air-cooled condenser is provided, fin tube-in-tube condenser is formed by heat exchanger tube and fin, heat exchanger tube is full of twists and turns shape, heat exchanger tube is divided into from air intake to liquid outlet hires out logical three sections continuously, be vaporized refrigerant in heat exchanger tube first paragraph, being vapour-liquid admixture cold-producing medium in heat exchanger tube second segment, is liquid refrigerant in heat exchanger tube the 3rd section, be characterized in: described heat exchanger tube second segment at least connects a vapor-liquid separating device, vapor-liquid separating device is communicated with by drainage tube and heat exchanger tube the 3rd section.Described heat exchanger tube first paragraph and the 3rd section of employing thermoexcell, and heat exchanger tube second segment adopts common heat exchanger tube.Which improves heat exchange efficiency, and reduce the cost of heat exchange material, same processed complex.
Summary of the invention
The object of the invention is to the shortcoming and defect overcoming above-mentioned prior art, the air-conditioner outdoor unit providing a kind of bottom separatory to reduce filling quantity of refrigerant and method thereof.Relative to prior art, decrease air-conditioning outdoor machine refrigerant filling quantity, reducer film thickness, improve cooling energy recovery.
The present invention is achieved through the following technical solutions:
A kind of bottom separatory reduces the air-conditioner outdoor unit of filling quantity of refrigerant, comprise upper end air inlet pipe 1, lower end liquid pipe 5, snakelike row's formula heat exchanger tube 3, described snakelike row's formula heat exchanger tube 3 comprises multiple upper bending section, vertical section and lower bending section, and the end of each lower bending section is all communicated with lower end liquid pipe 5 by communicating pipe 1-2; Described upper bending section only initiating terminal 1-1 is communicated with upper end air inlet pipe 1.
The end of described each lower bending section is all by communicating pipe 1-2, and the axial direction along lower end liquid pipe 5 is intervally arranged successively.
The port of described lower end liquid pipe 5 is provided with liquid seal device 4.
The vertical section of described snakelike row's formula heat exchanger tube 3 is provided with fin 2.
The control method of above-mentioned air-conditioner outdoor unit is as follows:
Cold-producing medium enters upper end air inlet pipe 1 from compressor outlet, and flow downward in first vertical tube being entered vertical section by the initiating terminal 1-1 of snakelike row's formula heat exchanger tube 3, convection current cooling-air heat exchange outer with vertical tube, part of refrigerant steam is condensed into liquid, condensate liquid flows downward along first vertical tube inwall, enter into lower end liquid pipe 5 by the communicating pipe 1-2 of lower bending section end, flow to throttle mechanism through liquid seal device 4; Meanwhile, another part second vertical tube that also uncooled refrigerant vapour enters vertical section by communicating pipe 1-2 upwards flows, the 3rd vertical tube entering again vertical section after upper bending section flows downward, the outer convection current cooling-air heat exchange with vertical tube in the process of flowing, condensate liquid flows downward along the 3rd vertical tube inwall, then enter into lower end liquid pipe 5 by the communicating pipe 1-2 of lower bending section end again, flow to throttle mechanism through liquid seal device 4; Condensate liquid flows in this format and constantly circulates, until flow to last root vertical tube of snakelike row's formula heat exchanger tube 3, and enters into lower end liquid pipe 5, flows to throttle mechanism through liquid seal device 4;
Condensate liquid forms fluid-tight at lower end liquid pipe 5 and liquid seal device 4 place, while the refrigerant liquid outflow condenser of condensation, uncooled refrigerant vapour can not flow out condenser, in the vertical tube of then snakelike row's formula heat exchanger tube 3, only some refrigerant steam condensing is liquid, namely the refrigerant liquid scale of construction accumulated in vertical tube reduces, and the filling quantity of refrigerant of air-conditioner set is reduced.
The present invention, relative to prior art, has following advantage and effect:
The present invention snakelike row formula heat exchanger tube 3 comprises multiple upper bending section, vertical section and lower bending section, and the end of each lower bending section is all communicated with lower end liquid pipe 5 by communicating pipe 1-2; Described upper bending section only initiating terminal 1-1 is communicated with upper end air inlet pipe 1.The end of described each lower bending section is all by communicating pipe 1-2, and the axial direction along lower end liquid pipe 5 is intervally arranged successively; Described vertical section and horizontal plane.Refrigerant vapour like this from compressor enters into snakelike row's formula heat exchanger tube 3 by upper end air inlet pipe 1, with the heat exchange of pipe outer convection current cooling-air, refrigerant vapour is condensed into downward liquid flow, enters into lower end liquid pipe 5, flow to throttle mechanism through liquid seal device 4 by communicating pipe 1-2; Now, condensate liquid forms fluid-tight at lower end liquid pipe 5 and liquid seal device 4 place, and while the refrigerant liquid outflow condenser of condensation, uncooled refrigerant vapour can not flow out condenser.
In condensation process, condensate liquid is not accumulate within the condenser, but flow in lower end liquid pipe 5, liquid phase burden in condenser is reduced, decreases the filling quantity of cold-producing medium, while condensate stream to lower end liquid pipe 5, be also thinned the thickness of liquid film in heat exchanger tube, heat exchange thermal resistance is reduced, increase the coefficient of heat transfer, overall heat-transfer coefficient increases, and improves whole efficiency.
The technological means that the present invention adopts, significantly can reduce filling quantity of refrigerant, can improve again air-conditioner outdoor unit heat exchange property and unit overall performance simultaneously, difficulty of processing is low, with low cost.
Accompanying drawing explanation
Fig. 1 is current existing normal domestic use air conditioner outdoor unit structure figure.
Fig. 2 is structural representation of the present invention (front view).
Fig. 3 is structure top view of the present invention.
Fig. 4 is structure left view of the present invention.
Fig. 5 is lower end of the present invention liquid tubular construction schematic diagram.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is more specifically described in detail.
Embodiment
As shown in Fig. 2 to 5.Bottom of the present invention separatory reduces the air-conditioner outdoor unit of filling quantity of refrigerant, comprise upper end air inlet pipe 1, lower end liquid pipe 5, snakelike row's formula heat exchanger tube 3, it is characterized in that: described snakelike row's formula heat exchanger tube 3 comprises multiple upper bending section, vertical section and lower bending section, and the end of each lower bending section is all communicated with lower end liquid pipe 5 by communicating pipe 1-2; Described upper bending section only initiating terminal 1-1 is communicated with upper end air inlet pipe 1; Described vertical section and horizontal plane.
The end of described each lower bending section is all by communicating pipe 1-2, and the axial direction along lower end liquid pipe 5 is intervally arranged successively.
The port of described lower end liquid pipe 5 is provided with liquid seal device 4.
The vertical section of described snakelike row's formula heat exchanger tube 3 is provided with fin 2.
The air-conditioner outdoor unit control method that bottom of the present invention separatory reduces filling quantity of refrigerant realizes by following steps:
Cold-producing medium enters upper end air inlet pipe 1 from compressor outlet (with high pressure gaseous), and flow downward in first vertical tube being entered vertical section by the initiating terminal 1-1 of snakelike row's formula heat exchanger tube 3, convection current cooling-air heat exchange outer with vertical tube, part of refrigerant steam is condensed into liquid, condensate liquid flows downward along first vertical tube inwall, enter into lower end liquid pipe 5 by the communicating pipe 1-2 of lower bending section end, flow to throttle mechanism through liquid seal device 4; Meanwhile, another part second vertical tube that also uncooled refrigerant vapour enters vertical section by communicating pipe 1-2 upwards flows, the 3rd vertical tube entering again vertical section after upper bending section flows downward, the outer convection current cooling-air heat exchange with vertical tube in the process of flowing, condensate liquid flows downward along the 3rd vertical tube inwall, then enter into lower end liquid pipe 5 by the communicating pipe 1-2 of lower bending section end again, flow to throttle mechanism through liquid seal device 4; Condensate liquid flows in this format and constantly circulates, until flow to last root vertical tube of snakelike row's formula heat exchanger tube 3, and enters into lower end liquid pipe 5, flows to throttle mechanism through liquid seal device 4;
Condensate liquid forms fluid-tight at lower end liquid pipe 5 and liquid seal device 4 place, while the refrigerant liquid outflow condenser of condensation, uncooled refrigerant vapour can not flow out condenser, in the vertical tube of then snakelike row's formula heat exchanger tube 3, only some refrigerant steam condensing is liquid, namely the refrigerant liquid scale of construction accumulated in vertical tube reduces, and the filling quantity of refrigerant of air-conditioner set is reduced.
Because the condensation of refrigerant thickness of liquid film in snakelike row's formula heat exchanger tube is thinning, such that the condensing heat-exchange thermal resistance of refrigerant side reduces, cooling energy recovery increases, condenser overall heat-transfer coefficient increases, and heat exchange efficiency improves.
As mentioned above, just the present invention can be realized preferably.
Embodiments of the present invention are not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present invention and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the air-conditioner outdoor unit of a bottom separatory minimizing filling quantity of refrigerant, comprise upper end air inlet pipe (1), lower end liquid pipe (5), snakelike row's formula heat exchanger tube (3), it is characterized in that: described snakelike row's formula heat exchanger tube (3) comprises multiple upper bending section, vertical section and lower bending section, the end of each lower bending section is all communicated with lower end liquid pipe (5) by communicating pipe (1-2); Described upper bending section only initiating terminal (1-1) is communicated with upper end air inlet pipe (1); Described vertical section and horizontal plane.
2. air-conditioner outdoor unit according to claim 1, is characterized in that: the end of described each lower bending section is all by communicating pipe (1-2), and the axial direction along lower end liquid pipe (5) is intervally arranged successively.
3. air-conditioner outdoor unit according to claim 1 and 2, is characterized in that: the port of described lower end liquid pipe (5) is provided with liquid seal device (4).
4. air-conditioner outdoor unit according to claim 3, is characterized in that: the vertical section of described snakelike row's formula heat exchanger tube (3) is provided with fin (2).
5. the control method of air-conditioner outdoor unit according to any one of Claims 1-4, is characterized in that comprising the steps:
Cold-producing medium enters upper end air inlet pipe (1) from compressor outlet, and flow downward in first vertical tube being entered vertical section by the initiating terminal (1-1) of snakelike row's formula heat exchanger tube (3), convection current cooling-air heat exchange outer with vertical tube, part of refrigerant steam is condensed into liquid, condensate liquid flows downward along first vertical tube inwall, enter into lower end liquid pipe (5) by the communicating pipe (1-2) of lower bending section end, flow to throttle mechanism through liquid seal device (4); Meanwhile, another part also uncooled refrigerant vapour is upwards flowed by second vertical tube entering vertical section communicating pipe (1-2), the 3rd vertical tube entering again vertical section after upper bending section flows downward, the outer convection current cooling-air heat exchange with vertical tube in the process of flowing, condensate liquid flows downward along the 3rd vertical tube inwall, that then passes through lower bending section end again enters into lower end liquid pipe (5) communicating pipe (1-2), flows to throttle mechanism through liquid seal device (4); Condensate liquid flows in this format and constantly circulates, until flow to last root vertical tube of snakelike row's formula heat exchanger tube (3), and enters into lower end liquid pipe (5), flows to throttle mechanism through liquid seal device (4);
Condensate liquid forms fluid-tight in lower end liquid pipe (5) and liquid seal device (4) place, while the refrigerant liquid outflow condenser of condensation, uncooled refrigerant vapour can not flow out condenser, in the vertical tube of then snakelike row's formula heat exchanger tube (3), only some refrigerant steam condensing is liquid, namely the refrigerant liquid scale of construction accumulated in vertical tube reduces, and the filling quantity of refrigerant of air-conditioner set is reduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468459.9A CN105066277A (en) | 2015-07-31 | 2015-07-31 | Air conditioner outdoor unit with refrigerant filling amount of lower portion liquid reduced and method of air conditioner outdoor unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510468459.9A CN105066277A (en) | 2015-07-31 | 2015-07-31 | Air conditioner outdoor unit with refrigerant filling amount of lower portion liquid reduced and method of air conditioner outdoor unit |
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| CN105066277A true CN105066277A (en) | 2015-11-18 |
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| CN201510468459.9A Pending CN105066277A (en) | 2015-07-31 | 2015-07-31 | Air conditioner outdoor unit with refrigerant filling amount of lower portion liquid reduced and method of air conditioner outdoor unit |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6536517B2 (en) * | 2000-06-26 | 2003-03-25 | Showa Denko K.K. | Evaporator |
| CN102121760A (en) * | 2011-04-12 | 2011-07-13 | 广东机电职业技术学院 | Parallel flow air conditioner and processing method thereof |
| CN103900164A (en) * | 2014-03-31 | 2014-07-02 | 华南理工大学 | Air-conditioning outdoor unit capable of reducing refrigerant charge and method implemented by air-conditioning outdoor unit |
| EP2869017A1 (en) * | 2013-10-21 | 2015-05-06 | Samsung Electronics Co., Ltd | Heat exchanger and air conditioner having the same |
| CN204943717U (en) * | 2015-07-31 | 2016-01-06 | 华南理工大学 | A kind of bottom separatory reduces the air-conditioner outdoor unit of filling quantity of refrigerant |
-
2015
- 2015-07-31 CN CN201510468459.9A patent/CN105066277A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6536517B2 (en) * | 2000-06-26 | 2003-03-25 | Showa Denko K.K. | Evaporator |
| CN102121760A (en) * | 2011-04-12 | 2011-07-13 | 广东机电职业技术学院 | Parallel flow air conditioner and processing method thereof |
| EP2869017A1 (en) * | 2013-10-21 | 2015-05-06 | Samsung Electronics Co., Ltd | Heat exchanger and air conditioner having the same |
| CN103900164A (en) * | 2014-03-31 | 2014-07-02 | 华南理工大学 | Air-conditioning outdoor unit capable of reducing refrigerant charge and method implemented by air-conditioning outdoor unit |
| CN204943717U (en) * | 2015-07-31 | 2016-01-06 | 华南理工大学 | A kind of bottom separatory reduces the air-conditioner outdoor unit of filling quantity of refrigerant |
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Application publication date: 20151118 |