CN105865082A - Modular air-cooled cold and hot water anti-icing unit - Google Patents
Modular air-cooled cold and hot water anti-icing unit Download PDFInfo
- Publication number
- CN105865082A CN105865082A CN201610247774.3A CN201610247774A CN105865082A CN 105865082 A CN105865082 A CN 105865082A CN 201610247774 A CN201610247774 A CN 201610247774A CN 105865082 A CN105865082 A CN 105865082A
- Authority
- CN
- China
- Prior art keywords
- branch road
- heat exchanger
- check valve
- valve
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
-
- 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
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
-
- 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
- F25B2347/00—Details for preventing or removing deposits or corrosion
- F25B2347/02—Details of defrosting cycles
Abstract
The invention discloses a modular air-cooled cold and hot water anti-icing unit which comprises a scroll type compressor, a four-way valve, a shell-and-tube heat exchanger, a refrigerant fluid circulating branch, a deicing branch, an air side heat exchanger, a deicing heat exchange tube and a liquid returning branch, wherein an air inlet of the four-way valve is connected onto an air outlet of the scroll type compressor; an inlet of the shell-and-tube heat exchanger is connected with an air outlet of the four-way valve; the refrigerant fluid circulating branch and the deicing branch are separately connected with an outlet of the shell-and-tube heat exchanger; the air side heat exchanger is connected with the refrigerant fluid circulating branch; the deicing heat exchange tube is connected with the deicing branch and is positioned at the lower side of the air side heat exchanger; and the liquid returning branch is connected between the air side heat exchanger and the scroll type compressor. By arranging the four-way valve on the air outlet of the scroll type compressor, the refrigerant fluid circulating branch and the deicing branch are formed, and icing and frosting of the bottom of the air side heat exchanger are prevented; and two one-way paths are arranged on the refrigerant fluid circulating branch, so that a refrigerant can flow according to the sequence of a filter, a liquid storage tank and an expansion valve in a forward direction or backward direction without countercurrent of the expansion valve, the liquid storage tank and the filter, and further the damage to equipment due to countercurrent is avoided.
Description
Technical field
The present invention relates to a kind of module anti-icing unit of air-cooled cold hot water.
Background technology
When winter, outdoor temperature was relatively low, Air Cooled Type Water Heater Chiller heating efficiency can be substantially reduced, especially in ambient temperature
When subzero 20 degree, outdoor heat exchanger suction temperature is extremely low, is very easy to cause heat exchanger frosting transition, so that unit cannot
Normal work, the employing external heat that existing ice prevention structure has, can not automatization's ice, some employings self cold-producing medium heat exchange ice, but its pipeline arranges unreasonable, being not provided with rational closed circuit after changing the cold-producing medium heat exchange in ice pipeline, easily generationization ice pipeline inner refrigerant adverse current, damages equipment.
Summary of the invention
It is an object of the invention to overcome the defect of prior art, it is provided that a kind of rational in infrastructure, change ice refrigeration heat carry out simultaneously, capable of circulationization ice refrigeration and avoid adverse current the module anti-icing unit of air-cooled cold hot water..
To achieve these goals, the technical scheme that the present invention takes is as follows:
A kind of module anti-icing unit of air-cooled cold hot water, including scroll compressor, the shell-and-tube heat exchanger that air intake is connected to the cross valve on scroll compressor gas outlet, entrance is connected with the gas outlet of cross valve, the refrigerating fluid circulation branch road being connected with shell-and-tube heat exchanger outlet respectively with change air side heat exchanger that ice branch road is connected with refrigerating fluid circulation branch road and be connected with change ice branch road and change ice heat exchanger tube on the downside of air side heat exchanger and time liquid branch road that is connected between air side heat exchanger and scroll compressor；
Described time liquid branch road includes the pipeline being connected between the liquid return hole of cross valve and air side heat exchanger and the first branch road being connected on the liquid outlet of cross valve and the second branch road；
Described Article 1 branch road is the gas branch road being communicated on refrigerating fluid circulation branch road, and described Article 2 branch road is the liquid branch road by being communicated to scroll compressor refluxing opening after gas-liquid separator；
It is disposed with filter, fluid reservoir and expansion valve on described refrigerating fluid circulation branch road；
It is disposed with the first change ice electromagnetic valve on describedization ice branch road, changes ice heat exchanger tube and the second change ice electromagnetic valve；
Describedization ice heat exchanger tube two ends pipeline is connected in parallel on air side heat exchanger two ends, and two ends pipeline and is respectively arranged with the first electromagnetic valve and the second electromagnetic valve；
Described second changes ice electromagnetic valve is connected with refrigerating fluid circulation branch road.
Further improving as the present invention, the refrigerating fluid outlet of described scroll compressor is connected with refrigerating fluid circulation branch road.
Further improve as the present invention, described refrigerating fluid circulation branch road is provided with the first refrigerating fluid branch road and the second refrigerating fluid branch road；It is provided with the first check valve and the 3rd check valve on described first refrigerating fluid branch road；It is provided with the second check valve and the 4th check valve on described second refrigerating fluid branch road.
Further improving as the present invention, with described 3rd check valve in the same direction, described first check valve and the second check valve are reverse for described first check valve, and described second check valve is with described 4th check valve in the same direction.
Further improving as the present invention, the end of described filter is connected on the second refrigerating fluid branch road between the second check valve and the 4th check valve；The end of described expansion valve is connected on the first refrigerating fluid branch road between the first check valve and the 3rd check valve.
Further improving as the present invention, described 4th check valve, filter, fluid reservoir, expansion valve and the first check valve form refrigerating fluid and flow to the one-way passage of air side heat exchanger；Described second check valve, filter, fluid reservoir, expansion valve and the 3rd check valve form refrigerating fluid and flow out the one-way passage of air side heat exchanger.
Further improving as the present invention, described first branch road connects and is connected with described expansion valve.
Further improving as the present invention, the air intake of described cross valve is respectively arranged with the first technique needle-valve and high-voltage switch gear on the connecting line of scroll compressor gas outlet；Described gas-liquid separator is respectively arranged with the second technique needle-valve and low tension switch on the connecting line of scroll compressor refluxing opening.
Further improve as the present invention, described shell-and-tube heat exchanger is provided with the heat exchange liquid import with refrigerant heat exchanger and the outlet of heat exchange liquid.
Compared with prior art, having the beneficial effect that acquired by the present invention:
The present invention is the module anti-icing unit of air-cooled cold hot water, by arranging cross valve on scroll compressor gas outlet, form refrigerating fluid circulation branch road and change ice branch road, high temperature and high pressure gas carries out heat release heat exchange at change ice branch road by shell-and-tube heat exchanger and becomes medium temperature and medium pressure liquid, when the first change ice electromagnetic valve is opened, carry out heat exchange bottom air side heat exchanger relatively low with temperature in medium temperature and medium pressure liquid entranceization ice heat exchanger tube, prevent icing frosting bottom air side heat exchanger；And medium temperature and medium pressure liquid after heat release ice, is back to refrigerating fluid circulation branch road by the second change ice electromagnetic valve and again recycles in change ice heat exchanger tube；Refrigerating fluid circulation branch road arranges two one-way passage, it is ensured that all flow to by filter, fluid reservoir and expansion valve order when cold-producing medium flows forward or backwards, without producing expansion valve, fluid reservoir and the adverse current of filter, it is to avoid equipment is caused damage by adverse current.Present configuration pipeline arranges rationally, it is possible to carrying out frost while unit heats work, thus ensures the continual normal work of system.
Accompanying drawing explanation
Accompanying drawing 1 is the workflow structure schematic diagram of the present invention.
In the accompanying drawings:
1 scroll compressor, 2 cross valves, 2-1 air intake, 2-2 gas outlet, 2-3 liquid return hole, 2-4 liquid outlet,
3 air side heat exchangers, 4 filters, 5A the first check valve, 5B the second check valve, 5C the 3rd check valve, 5D the 4th check valve, 6 fluid reservoirs, 7 expansion valves, 8 shell-and-tube heat exchangers, 9 gas-liquid separators, 10 high-voltage switch gears, 11 low tension switches, 12 first technique needle-valves, 13 change ice heat exchanger tube, 14A the first electromagnetic valve, 14B the second electromagnetic valves, 15A first changes ice electromagnetic valve, 15B second changes ice electromagnetic valve, 16 second technique needle-valves, 17 heat exchange liquid imports, 18 heat exchange liquid outlet.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is carried out further details of narration.
As shown in Figure 1, a kind of module anti-icing unit of air-cooled cold hot water, including scroll compressor 1, the shell-and-tube heat exchanger 8 that air intake 2-1 is connected to the cross valve 2 on scroll compressor 1 gas outlet, entrance is connected with the gas outlet 2-2 of cross valve 2, the refrigerating fluid circulation branch road being connected with shell-and-tube heat exchanger 8 outlet respectively with change air side heat exchanger 3 that ice branch road is connected with refrigerating fluid circulation branch road and be connected with change ice branch road and change ice heat exchanger tube 13 on the downside of air side heat exchanger 3 and time liquid branch road that is connected between air side heat exchanger 3 and scroll compressor 1；Described time liquid branch road includes the pipeline being connected between the liquid return hole 2-3 of cross valve 2 and air side heat exchanger 3 and the first branch road being connected on the liquid outlet 2-4 of cross valve 2 and the second branch road；Described Article 1 branch road is the gas branch road being communicated on refrigerating fluid circulation branch road, and described Article 2 branch road is the liquid branch road by being communicated to scroll compressor 1 refluxing opening after gas-liquid separator 9；It is disposed with filter 4, fluid reservoir 6 and expansion valve 7 on described refrigerating fluid circulation branch road；It is disposed with the first change ice electromagnetic valve 15A on describedization ice branch road, changes ice heat exchanger tube 13 and the second change ice electromagnetic valve 15B；Describedization ice heat exchanger tube 13 two ends pipeline is connected in parallel on air side heat exchanger 3 two ends, and is respectively arranged with the first electromagnetic valve 14A and the second electromagnetic valve 14B on the pipeline of two ends；Described second changes ice electromagnetic valve 15B is connected with refrigerating fluid circulation branch road.The refrigerating fluid outlet of described scroll compressor 1 is connected with refrigerating fluid circulation branch road.It is provided with the first refrigerating fluid branch road and the second refrigerating fluid branch road on described refrigerating fluid circulation branch road；It is provided with the first check valve 5A and the 3rd check valve 5C on described first refrigerating fluid branch road；It is provided with the second check valve 5B and the 4th check valve 5D on described second refrigerating fluid branch road.In the same direction, described first check valve 5A and the second check valve 5B is reverse for described first check valve 5A and described 3rd check valve 5C, and described second check valve 5B and described 4th check valve 5D is in the same direction.The end of described filter 4 is connected on the second refrigerating fluid branch road between the second check valve 5B and the 4th check valve 5D；The end of described expansion valve 7 is connected on the first refrigerating fluid branch road between the first check valve 5A and the 3rd check valve 5C.Described 4th check valve 5D, filter 4, fluid reservoir 6, expansion valve 7 and the first check valve 5A form refrigerating fluid and flow to the one-way passage of air side heat exchanger 3；Described second check valve 5B, filter 4, fluid reservoir 6, expansion valve 7 and the 3rd check valve 5C form refrigerating fluid and flow out the one-way passage of air side heat exchanger 3.Described first branch road connects and is connected with described expansion valve 7.The air intake 2-1 of described cross valve 2 is respectively arranged with the first technique needle-valve 12 and high-voltage switch gear 10 on the connecting line of scroll compressor 1 gas outlet；Described gas-liquid separator 9 is respectively arranged with the second technique needle-valve 16 and low tension switch 11 on the connecting line of scroll compressor 1 refluxing opening.
The heat exchange liquid import 17 with refrigerant heat exchanger and heat exchange liquid outlet 18 it is provided with on described shell-and-tube heat exchanger 8.The present invention is the module anti-icing unit of air-cooled cold hot water, by arranging cross valve 2 on the gas outlet of scroll compressor 1, form refrigerating fluid circulation branch road and change ice branch road, high temperature and high pressure gas carries out heat release heat exchange at change ice branch road by shell-and-tube heat exchanger 8 and becomes medium temperature and medium pressure liquid, when the first change ice electromagnetic valve 15A opens, carry out heat exchange bottom air side heat exchanger 3 relatively low with temperature in medium temperature and medium pressure liquid entranceization ice heat exchanger tube 13, prevent icing frosting bottom air side heat exchanger 3；And medium temperature and medium pressure liquid after heat release ice, is back to refrigerating fluid circulation branch road by the second change ice electromagnetic valve 15B and again recycles in change ice heat exchanger tube 13；Refrigerating fluid circulation branch road arranges two one-way passage, can ensure all to flow to by filter 4, fluid reservoir 6 and expansion valve 7 order when cold-producing medium flows forward or backwards, without producing expansion valve 7, fluid reservoir 6 and the adverse current of filter 4, it is to avoid equipment is caused damage by adverse current.Present configuration pipeline arranges rationally, it is possible to carrying out frost while unit heats work, thus ensures the continual normal work of system.
The above embodiment is only the preferred embodiments of the present invention, and and the feasible enforcement of non-invention exhaustive.For persons skilled in the art, any obvious change done to it on the premise of without departing substantially from the principle of the invention and spirit, within all should being contemplated as falling with the claims of the present invention.
Claims (9)
1. the module anti-icing unit of air-cooled cold hot water, it is characterized in that: it includes scroll compressor (1), air intake (2-1) is connected to the cross valve (2) on scroll compressor (1) gas outlet, the shell-and-tube heat exchanger (8) that entrance is connected with the gas outlet (2-2) of cross valve (2), the refrigerating fluid circulation branch road being connected with shell-and-tube heat exchanger (8) outlet respectively and change ice branch road, the air side heat exchanger (3) being connected with refrigerating fluid circulation branch road, it is connected and is positioned at change ice heat exchanger tube (13) on the downside of air side heat exchanger (3) and time liquid branch road being connected between air side heat exchanger (3) and scroll compressor (1) with changing ice branch road；
Described time liquid branch road includes the pipeline being connected between the liquid return hole (2-3) of cross valve (2) and air side heat exchanger (3) and the first branch road being connected on the liquid outlet (2-4) of cross valve (2) and the second branch road；
Described Article 1 branch road is the gas branch road being communicated on refrigerating fluid circulation branch road, and described Article 2 branch road is the liquid branch road by being communicated to scroll compressor (1) refluxing opening after gas-liquid separator (9)；
It is disposed with filter (4), fluid reservoir (6) and expansion valve (7) on described refrigerating fluid circulation branch road；
It is disposed with the first change ice electromagnetic valve (15A) on describedization ice branch road, changes ice heat exchanger tube (13) and the second change ice electromagnetic valve (15B)；
Describedization ice heat exchanger tube (13) two ends pipeline is connected in parallel on air side heat exchanger (3) two ends, and is respectively arranged with the first electromagnetic valve (14A) and the second electromagnetic valve (14B) on the pipeline of two ends；
Described second changes ice electromagnetic valve (15B) is connected with refrigerating fluid circulation branch road.
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 1, it is characterised in that: the refrigerating fluid outlet of described scroll compressor (1) is connected with refrigerating fluid circulation branch road.
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 2, it is characterised in that: it is provided with the first refrigerating fluid branch road and the second refrigerating fluid branch road on described refrigerating fluid circulation branch road；The first check valve (5A) and the 3rd check valve (5C) it is provided with on described first refrigerating fluid branch road；The second check valve 5B and the 4th check valve (5D) it is provided with on described second refrigerating fluid branch road.
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 3, it is characterized in that: described first check valve (5A) is with described 3rd check valve (5C) in the same direction, described first check valve (5A) is reverse with the second check valve 5B, and described second check valve 5B is with described 4th check valve (5D) in the same direction.
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 4, it is characterised in that: the end of described filter (4) is connected on the second refrigerating fluid branch road between the second check valve 5B and the 4th check valve (5D)；The end of described expansion valve (7) is connected on the first refrigerating fluid branch road between the first check valve (5A) and the 3rd check valve (5C).
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 5, it is characterised in that: described 4th check valve (5D), filter (4), fluid reservoir (6), expansion valve (7) and the first check valve (5A) form refrigerating fluid and flow to the one-way passage of air side heat exchanger (3)；Described second check valve 5B, filter (4), fluid reservoir (6), expansion valve (7) and the 3rd check valve (5C) form refrigerating fluid and flow out the one-way passage of air side heat exchanger (3).
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 6, it is characterised in that: described first branch road connects and is connected with described expansion valve (7).
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 7, it is characterised in that: it is respectively arranged with the first technique needle-valve (12) and high-voltage switch gear (10) on the air intake (2-1) of described cross valve (2) and the connecting line of scroll compressor (1) gas outlet；Described gas-liquid separator (9) is respectively arranged with the second technique needle-valve (16) and low tension switch (11) on the connecting line of scroll compressor (1) refluxing opening.
A kind of module anti-icing unit of air-cooled cold hot water the most according to claim 8, it is characterised in that: it is provided with heat exchange liquid import (17) with refrigerant heat exchanger and heat exchange liquid outlet (18) on described shell-and-tube heat exchanger (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247774.3A CN105865082A (en) | 2016-04-20 | 2016-04-20 | Modular air-cooled cold and hot water anti-icing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610247774.3A CN105865082A (en) | 2016-04-20 | 2016-04-20 | Modular air-cooled cold and hot water anti-icing unit |
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| Publication Number | Publication Date |
|---|---|
| CN105865082A true CN105865082A (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610247774.3A Pending CN105865082A (en) | 2016-04-20 | 2016-04-20 | Modular air-cooled cold and hot water anti-icing unit |
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| CN (1) | CN105865082A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425945A (en) * | 2020-05-06 | 2020-07-17 | 珠海格力电器股份有限公司 | Heat exchanger assembly, air conditioner and control method of air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000067601A (en) * | 1999-04-30 | 2000-11-25 | 구자홍 | Heat pump cycle |
| JP2006308156A (en) * | 2005-04-27 | 2006-11-09 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN2886424Y (en) * | 2006-04-10 | 2007-04-04 | 广东美的电器股份有限公司 | Heat pump water heater |
| CN101398234A (en) * | 2007-09-28 | 2009-04-01 | 德州亚太集团有限公司 | Low-temperature air-cooling heat pump unit |
| CN201583075U (en) * | 2010-01-08 | 2010-09-15 | 苏州安发国际空调有限公司 | Air-cooled heat pump unit with defrosting functions |
| CN104729163A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN204494892U (en) * | 2014-12-31 | 2015-07-22 | 重庆达孚制冷设备有限责任公司 | The cold air-source super low temperature heat pump unit pressing down white heat exchanger is crossed in a kind of application |
-
2016
- 2016-04-20 CN CN201610247774.3A patent/CN105865082A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000067601A (en) * | 1999-04-30 | 2000-11-25 | 구자홍 | Heat pump cycle |
| JP2006308156A (en) * | 2005-04-27 | 2006-11-09 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN2886424Y (en) * | 2006-04-10 | 2007-04-04 | 广东美的电器股份有限公司 | Heat pump water heater |
| CN101398234A (en) * | 2007-09-28 | 2009-04-01 | 德州亚太集团有限公司 | Low-temperature air-cooling heat pump unit |
| CN201583075U (en) * | 2010-01-08 | 2010-09-15 | 苏州安发国际空调有限公司 | Air-cooled heat pump unit with defrosting functions |
| CN104729163A (en) * | 2013-12-24 | 2015-06-24 | 珠海格力电器股份有限公司 | Air conditioning system and defrosting control method thereof |
| CN204494892U (en) * | 2014-12-31 | 2015-07-22 | 重庆达孚制冷设备有限责任公司 | The cold air-source super low temperature heat pump unit pressing down white heat exchanger is crossed in a kind of application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111425945A (en) * | 2020-05-06 | 2020-07-17 | 珠海格力电器股份有限公司 | Heat exchanger assembly, air conditioner and control method of air conditioner |
| CN111425945B (en) * | 2020-05-06 | 2024-02-09 | 珠海格力电器股份有限公司 | Heat exchanger assembly, air conditioner and control method of air conditioner |
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Application publication date: 20160817 |
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