CN104266416A - Multi-split air conditioner throttling and super-cooling control mechanism - Google Patents
Multi-split air conditioner throttling and super-cooling control mechanism Download PDFInfo
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- CN104266416A CN104266416A CN201410515056.0A CN201410515056A CN104266416A CN 104266416 A CN104266416 A CN 104266416A CN 201410515056 A CN201410515056 A CN 201410515056A CN 104266416 A CN104266416 A CN 104266416A
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- valve
- port
- check valve
- subcooler
- cold
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Classifications
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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
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
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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
- F25B41/31—Expansion valves
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The invention relates to a multi-split air conditioner throttling and super-cooling control mechanism which comprises a compressor, an oil separator, a first port four-way valve, a condenser, a first check valve, a super-cooler, an inner machine, a gas-liquid separator, an electronic expansion valve, a second check valve and a third check valve or solenoid valve. An input of the electronic expansion valve is connected between the first check valve and the super-cooler, and an output of the electronic expansion valve is connected with the super-cooler. An input of the second check valve is connected with the output of the electronic expansion valve, and an output of the second check valve is connected between the condenser and the first check valve. An input of the third check valve is connected with the super-cooler, and an output of the third check valve is connected between the inner machine and a fourth port of the four-way valve. The multi-split air conditioner throttling and super-cooling control mechanism uses the main electronic expansion valve to replace a super-cooling electronic expansion valve and is additionally provided with the two check valves or one check valve plus one solenoid valve, the main electronic expansion valve replaces functions of the super-cooling electronic expansion valve, and therefore the multi-split air conditioner throttling and super-cooling control mechanism reduces cost, improves system reliability and can be used for heating high-pressure protection unloading.
Description
Technical field
the present invention relates to air-conditioning, refrigerating field, particularly relate to a kind of multi-connected machine throttling and cross cold controlling organization.
Background technology
at present, multi-connected machine throttling traditional in industry and cross cold controlling organization (as shown in Figure 5) and be designed to main electric expansion valve 9 ' and cross cold electromagnetic expanding valve 9 ' ' function separates, capacity on the one hand along with multi-connected machine is original larger, and function gets more and more, and the electric expansion valve of use also increases; On the other hand, it is all a shared power supply that traditional circuit design electric expansion valve is powered, so will carry out separately controlling to electronic expansion, if control multiple electric expansion valve simultaneously, the regulated quantity in one-period is just little.
Summary of the invention
the object of this invention is to provide a kind of multi-connected machine throttling and cross cold controlling organization.
for achieving the above object, the technical solution used in the present invention is:
a kind of multi-connected machine throttling and excessively cold controlling organization, comprise compressor, the oil eliminator be connected with described compressor, the cross valve that first port is connected with described oil eliminator, the condenser be connected with described cross valve second port, the first check valve be connected with described condenser, the subcooler be connected with the first described check valve, machine and the gas-liquid separator that is connected with described cross valve the 3rd port in being connected with described subcooler, described interior machine is connected with described cross valve the 4th port, described gas-liquid separator is connected with described compressor, the condenser described in entrance connection of the first described check valve, subcooler described in outlet connects,
this structure also comprises electric expansion valve, the second check valve and the 3rd check valve, the entrance of electric expansion valve be connected to the first described check valve with between subcooler, export the subcooler described in being connected; Outlet, the outlet of the electric expansion valve described in entrance connection of the second described check valve are connected between described condenser and the first check valve; The subcooler described in entrance connection of the 3rd described check valve, outlet are connected between described interior machine and cross valve the 4th port.
preferably, capillary is connected with between the outlet of described electric expansion valve and subcooler.
preferably, this structure comprises cooling condition, with cooling condition and the heating condition of crossing cold demand.
further preferably, when cooling condition, described cross valve first port, the second port are communicated with; 3rd port, the 4th port are communicated with, and cold-producing medium enters interior machine by described compressor, oil eliminator, cross valve, condenser, the first check valve, subcooler; Through the cold-producing medium of described interior machine by described cross valve, gas-liquid separator reflux compressor.
further preferably, when the cooling condition with the cold demand of mistake, described cross valve first port, the second port are communicated with; 3rd port, the 4th port are communicated with, cold-producing medium is by described compressor, oil eliminator, cross valve, condenser, the first check valve, enter interior machine by described subcooler after some refrigerant shunting, some refrigerant is by described electric expansion valve, subcooler, the 3rd check valve, cross valve, gas-liquid separator reflux compressor; Through the cold-producing medium of described interior machine by described cross valve, gas-liquid separator reflux compressor.
further preferably, when heating condition, described cross valve first port, the 4th port are communicated with, second port, the 3rd port are communicated with, cold-producing medium enters interior machine by described compressor, oil eliminator, cross valve, through the cold-producing medium of described interior machine by described subcooler, electric expansion valve, the second check valve, condenser, cross valve, gas-liquid separator reflux compressor.
preferably, the 3rd described check valve is replaced by magnetic valve.
because technique scheme is used, the present invention compared with prior art has following advantages and effect:
the present invention adopts main electric expansion valve to replace the mechanism of cold electric expansion valve; and increase by two check valves; or a check valve adds a magnetic valve; the function main electric expansion valve being treated as low temperature valve uses; can reduce costs on the one hand; increasing the reliability of system on the other hand, can also use as heating high voltage protective unloading in addition.
Accompanying drawing explanation
accompanying drawing 1 structural representation of the present invention;
refrigerant flow direction figure during accompanying drawing 2 cooling condition of the present invention;
accompanying drawing 3 the present invention is with refrigerant flow direction figure when crossing the cooling condition of cold demand;
refrigerant flow direction figure during accompanying drawing 4 heating condition of the present invention;
the structural representation of accompanying drawing 5 prior art;
wherein: 1, compressor; 2, oil eliminator; 3, cross valve; 30, the first port; 31, the second port; 32, the 3rd port; 33, the 4th port; 4, condenser; 5, the first check valve; 6, subcooler; 7, interior machine; 8, gas-liquid separator; 9, electric expansion valve; 10, the second check valve; 11, the 3rd check valve.A, high-pressure side refrigerant flow direction; B, low side refrigerant flow to.
Detailed description of the invention
below in conjunction with accompanying drawing and case study on implementation, the invention will be further described:
embodiment one:
a kind of multi-connected machine throttling as shown in Figure 1 and excessively cold controlling organization, comprise compressor 1, the oil eliminator 2 be connected with compressor 1, the cross valve 3 that first port 30 is connected with oil eliminator 2, the condenser 4 be connected with cross valve 3 second port 31, the first check valve 5 be connected with condenser 4, the subcooler 6 be connected with the first check valve 5, machine 7 and the gas-liquid separator 8 that is connected with cross valve 3 the 3rd port 32 in being connected with subcooler 6, interior machine 7 is connected with cross valve 3 the 4th port 33, gas-liquid separator 8 is connected with compressor 1, the entrance of the first check valve 5 connects condenser 4, outlet connects subcooler 6.
in the present embodiment, this structure also comprises electric expansion valve 9, second check valve 10 and the 3rd check valve 11, the entrance of electric expansion valve 9 be connected to the first check valve 5 with between subcooler 4, export and be connected subcooler 6; Outlet, the outlet of the entrance connection electric expansion valve 9 of the second check valve 10 are connected between condenser 4 and the first check valve 5; The entrance of the 3rd check valve 11 connects subcooler 6, outlet is connected between interior machine 7 and cross valve 3 the 4th port 33.Electric expansion valve 9, subcooler 6, the 3rd check valve 11 and the second check valve 10 formed cold loop.In addition, between the outlet of electric expansion valve 9 and subcooler 6, be connected with capillary 12, because the relative aperture of electric expansion valve 9 is comparatively large, carry out second throttle by capillary 12.
this structure comprises cooling condition, with cooling condition and the heating condition of crossing cold demand.The following specifically describes the course of work of lower each operating mode:
as shown in Figure 2: at cooling condition, and without cross cold demand time, cross valve 3 first port 30, second port 31 is communicated with; 3rd port 32, the 4th port 33 are communicated with.Now, the refrigerant gas of HTHP from compression 1 machine out, through oil eliminator 2, cross valve 3 to condenser 4, through the reverse prevention of the first check valve 5(due to the second check valve 10, so cold-producing medium can not enter cold loop from the second check valve 10), then arrive interior machine 7 through subcooler 6, now electric expansion valve 9 is in closed condition.Through the low pressure refrigerant of interior machine 7 from interior machine 7 through cross valve 3, gas-liquid separator 8 reflux compressor 1.
as shown in Figure 3: cooling condition, and had cold demand time, cross valve 3 first port 30, second port 31 is communicated with; 3rd port 32, the 4th port 33 are communicated with.Now, the refrigerant gas of HTHP from compressor 1 out, through oil eliminator 2, cross valve 3 to condenser 4, through the reverse prevention of the first check valve 5(due to the second check valve 10, so cold-producing medium can not enter cold loop from the second check valve 10), then main road arrives interior machine 7 through subcooler 6; Cross electric expansion valve 9 on cold loop to open simultaneously, the cold-producing medium distributed is after electric expansion valve 9 throttling expansion, enter subcooler 6 again through capillary 12, the cold-producing medium directly flow through with main road is through subcooler heat exchange, then check valve 2 can not be flow through, because opposite side is high-pressure gas refrigerant with the cold-producing medium entering gas-liquid separator 8(from the 3rd check valve 11 and flow through electric expansion valve).Through the low pressure refrigerant of interior machine 7 from interior machine 7 through cross valve 3, gas-liquid separator 8 reflux compressor 1.
as shown in Figure 4: when heating condition, cross valve 3 first port 30, the 4th port 33 are communicated with, and the second port 31, the 3rd port 32 are communicated with.Now: the refrigerant gas of HTHP from compressor 1 out, through oil eliminator 2, cross valve 3 is to interior machine 7, after condensation, the liquid refrigerant of high pressure enters after outer machine from interior machine 7 through stop valve/ball valve, first subcooler 6 is entered, then after electric expansion valve 9 throttling, condenser 4 is entered again through the second check valve 10, cross valve 3, gas-liquid separator 8 reflux compressor 1, now the first check valve 5 is reverse obstructed, do not have cold-producing medium from then on to flow through on road without electric expansion valve 9, and electric expansion valve 9 another one loop be out connected on lead to interior machine 7 high-pressure exhaust pipe on, so this road does not have flow of refrigerant mistake yet, namely cold-producing medium is not had by the 3rd check valve 11.
embodiment two:
the present embodiment is substantially identical with embodiment one, and difference is: the 3rd check valve 11 is replaced by magnetic valve.When heating condition, during as limiting condition, High Abnormal Pressure raises, and is now opened by magnetic valve, allows the gaseous coolant of high pressure-temperature be bypassed to outer machine condenser, allow condenser accessory system dispel the heat, effectively can reduce the high-pressure of system.
above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. a multi-connected machine throttling and excessively cold controlling organization, comprise compressor, the oil eliminator be connected with described compressor, the cross valve that first port is connected with described oil eliminator, the condenser be connected with described cross valve second port, the first check valve be connected with described condenser, the subcooler be connected with the first described check valve, machine and the gas-liquid separator that is connected with described cross valve the 3rd port in being connected with described subcooler, described interior machine is connected with described cross valve the 4th port, described gas-liquid separator is connected with described compressor, the condenser described in entrance connection of the first described check valve, subcooler described in outlet connects, it is characterized in that:
This structure also comprises electric expansion valve, the second check valve and the 3rd check valve, the entrance of electric expansion valve be connected to the first described check valve with between subcooler, export the subcooler described in being connected; Outlet, the outlet of the electric expansion valve described in entrance connection of the second described check valve are connected between described condenser and the first check valve; The subcooler described in entrance connection of the 3rd described check valve, outlet are connected between described interior machine and cross valve the 4th port.
2. multi-connected machine throttling according to claim 1 and excessively cold controlling organization, is characterized in that: be connected with capillary between the outlet of described electric expansion valve and subcooler.
3. multi-connected machine throttling according to claim 1 and excessively cold controlling organization, is characterized in that: this structure comprises cooling condition, with cooling condition and the heating condition of crossing cold demand.
4. multi-connected machine throttling according to claim 3 and excessively cold controlling organization, is characterized in that: when cooling condition, and described cross valve first port, the second port are communicated with; 3rd port, the 4th port are communicated with, and cold-producing medium enters interior machine by described compressor, oil eliminator, cross valve, condenser, the first check valve, subcooler; Through the cold-producing medium of described interior machine by described cross valve, gas-liquid separator reflux compressor.
5. multi-connected machine throttling according to claim 3 and excessively cold controlling organization, is characterized in that: when the cooling condition with the cold demand of mistake, described cross valve first port, the second port are communicated with; 3rd port, the 4th port are communicated with, cold-producing medium is by described compressor, oil eliminator, cross valve, condenser, the first check valve, enter interior machine by described subcooler after some refrigerant shunting, some refrigerant is by described electric expansion valve, subcooler, the 3rd check valve, cross valve, gas-liquid separator reflux compressor; Through the cold-producing medium of described interior machine by described cross valve, gas-liquid separator reflux compressor.
6. multi-connected machine throttling according to claim 3 and excessively cold controlling organization, it is characterized in that: when heating condition, described cross valve first port, the 4th port are communicated with, second port, the 3rd port are communicated with, cold-producing medium enters interior machine by described compressor, oil eliminator, cross valve, through the cold-producing medium of described interior machine by described subcooler, electric expansion valve, the second check valve, condenser, cross valve, gas-liquid separator reflux compressor.
7. multi-connected machine throttling according to claim 1 and excessively cold controlling organization, is characterized in that: the 3rd described check valve is replaced by magnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410515056.0A CN104266416B (en) | 2014-09-29 | 2014-09-29 | Multi-connected machine throttling and supercooling controlling organization |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410515056.0A CN104266416B (en) | 2014-09-29 | 2014-09-29 | Multi-connected machine throttling and supercooling controlling organization |
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| Publication Number | Publication Date |
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| CN104266416A true CN104266416A (en) | 2015-01-07 |
| CN104266416B CN104266416B (en) | 2017-03-15 |
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| CN201410515056.0A Active CN104266416B (en) | 2014-09-29 | 2014-09-29 | Multi-connected machine throttling and supercooling controlling organization |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173934A (en) * | 2019-05-29 | 2019-08-27 | 南京天加环境科技有限公司 | A kind of control method of gas-fired heat pump multi-connected machine supercooling structure |
| CN110220324A (en) * | 2018-03-01 | 2019-09-10 | 浙江盾安机械有限公司 | Four-way valve and air-conditioning system |
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| WO1998006983A1 (en) * | 1996-08-14 | 1998-02-19 | Daikin Industries, Ltd. | Air conditioner |
| FR2901015A1 (en) * | 2006-05-12 | 2007-11-16 | Goff Michel Paul Marcel Le | Water/air heat pump for refrigerating unit, has hot battery placed in upstream of cold battery with respect to direction of air, where cold battery is heated by thermal conductivity effect due to hot battery |
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| CN202382469U (en) * | 2011-12-19 | 2012-08-15 | 无锡同方人工环境有限公司 | R32 air-cooling cold-water heat pump unit with liquid-spraying compressor |
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| CN203116358U (en) * | 2013-01-28 | 2013-08-07 | 特灵空调系统(中国)有限公司 | Heat pump for deep supercooled liquid collecting tube liquid phase distribution with good distribution effect |
| CN203550068U (en) * | 2013-09-30 | 2014-04-16 | 广东志高暖通设备股份有限公司 | Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine |
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2014
- 2014-09-29 CN CN201410515056.0A patent/CN104266416B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998006983A1 (en) * | 1996-08-14 | 1998-02-19 | Daikin Industries, Ltd. | Air conditioner |
| FR2901015A1 (en) * | 2006-05-12 | 2007-11-16 | Goff Michel Paul Marcel Le | Water/air heat pump for refrigerating unit, has hot battery placed in upstream of cold battery with respect to direction of air, where cold battery is heated by thermal conductivity effect due to hot battery |
| CN201344676Y (en) * | 2009-02-12 | 2009-11-11 | 珠海格力电器股份有限公司 | Heat pump type air conditioner with bypass supercooling |
| CN102109202A (en) * | 2009-12-25 | 2011-06-29 | 株式会社富士通将军股份有限公司 | Air conditioner |
| CN202521952U (en) * | 2011-10-26 | 2012-11-07 | 广东芬尼克兹节能设备有限公司 | Ultralow temperature air source heat pump with double throttling devices |
| CN202382469U (en) * | 2011-12-19 | 2012-08-15 | 无锡同方人工环境有限公司 | R32 air-cooling cold-water heat pump unit with liquid-spraying compressor |
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| CN203116358U (en) * | 2013-01-28 | 2013-08-07 | 特灵空调系统(中国)有限公司 | Heat pump for deep supercooled liquid collecting tube liquid phase distribution with good distribution effect |
| CN203550068U (en) * | 2013-09-30 | 2014-04-16 | 广东志高暖通设备股份有限公司 | Multi-split system, multi-split system outdoor machine and outdoor machine unit of multi-split system outdoor machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220324A (en) * | 2018-03-01 | 2019-09-10 | 浙江盾安机械有限公司 | Four-way valve and air-conditioning system |
| CN110173934A (en) * | 2019-05-29 | 2019-08-27 | 南京天加环境科技有限公司 | A kind of control method of gas-fired heat pump multi-connected machine supercooling structure |
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| Publication number | Publication date |
|---|---|
| CN104266416B (en) | 2017-03-15 |
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