CN104729160B - Parallel air-conditioning group - Google Patents
Parallel air-conditioning group Download PDFInfo
- Publication number
- CN104729160B CN104729160B CN201310722357.6A CN201310722357A CN104729160B CN 104729160 B CN104729160 B CN 104729160B CN 201310722357 A CN201310722357 A CN 201310722357A CN 104729160 B CN104729160 B CN 104729160B
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- Prior art keywords
- entrance
- supply pipe
- liquid supply
- outlet
- valve
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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
- F25B41/40—Fluid line arrangements
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/13—Economisers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of parallel air-conditioning group, including the first liquid supply pipe, the second liquid supply pipe and more than two economizers, and the first liquid supply pipe is for connecting condenser, and the second liquid supply pipe is for connecting evaporator；More than two economizers are arranged in parallel between the first liquid supply pipe and the second liquid supply pipe, and there is each economizer first entrance, second entrance, first outlet and second outlet, first entrance to be connected to first outlet, and second entrance is connected to second outlet；First entrance the first electronic valve of series connection connects the first liquid supply pipe, the first end of first electronic valve connects the first liquid supply pipe, the second end of first electronic valve connects first entrance, first outlet connects the second liquid supply pipe, second entrance is connected to the second end of the first electronic valve, second outlet corresponds to an economizer per compressor for being connected to compressor.It prevents refrigerant liquid from being flowed through from useless economizer, increases the degree of supercooling of unit at part load, increases unit efficiency.
Description
Technical field
The present invention relates to refrigerating field more particularly to a kind of parallel air-conditioning groups.
Background technology
Currently, in parallel air-conditioning group, all individually match there are one economizer per compressor, economizer played cold-working
With due to all sharing a liquid supply pipe, when certain compressor is not run, the corresponding economizer of this compressor does not act as
With, but liquid coolant still can flow through this economizer, cause degree of supercooling insufficient.
Invention content
In view of the present situation of the prior art, the purpose of the present invention is to provide a kind of parallel air-conditioning groups, prevent refrigerant liquid
It is flowed through from useless economizer, increases the degree of supercooling of unit at part load, so that refrigerant is crossed cold efficiency and reach maximum, performance
It is optimal, increases unit efficiency.To achieve the above object, technical scheme is as follows：
A kind of parallel air-conditioning group, including：
First liquid supply pipe, for connecting condenser；
Second liquid supply pipe, for connecting evaporator；
More than two economizers, described two above economizers are arranged in parallel to be supplied in first liquid supply pipe and described second
Between liquid pipe, each economizer has first entrance, second entrance, first outlet and second outlet, the first entrance
It is connected to the first outlet, the second entrance is connected to the second outlet；The first electronic valve of the first entrance series connection
Door connects first liquid supply pipe, and the first end of first electronic valve connects first liquid supply pipe, first electronics
The second end of valve connects the first entrance, and the first outlet connects second liquid supply pipe, the second entrance connection
The second end of first electronic valve, the second outlet correspond to a warp per compressor for being connected to compressor
Help device.
More preferably, first electronic valve is solenoid valve or motor-driven valve.
More preferably, the parallel air-conditioning group further includes heating power expansion valve, and each economizer corresponds to described in one
Heating power expansion valve；
The pipeline surface that the temperature sensing package of the heating power expansion valve is arranged between the second outlet and the compressor；
The entrance of the heating power expansion valve is connected to the second end of first electronic valve, the outlet of the heating power expansion valve
It is connected to the second entrance, the pressure-equalizing pipe of the heating power expansion valve is connected to the second outlet of the economizer.
Further, the parallel air-conditioning group further includes the second electronic valve, and second electronic valve is connected on
Between the entrance of the heating power expansion valve and the second end of first electronic valve.
More preferably, the parallel air-conditioning group further includes more than two shut-off valves；
The first end series connection shut-off valve of first electronic valve connects first liquid supply pipe, the economizer
The first outlet series connection shut-off valve connects second liquid supply pipe.
The beneficial effects of the invention are as follows：
The parallel air-conditioning group of the present invention, is subcooled from the condensed liquid coolant of condenser after economizer.
When there is compressor not start in system, then corresponding economizer does not just work, at this moment, the compressor institute not started
Corresponding economizer solenoid valve is closed, in this way, it is prevented that refrigerant liquid is flowed through from useless economizer, increases unit in portion
Divide the degree of supercooling under load, so that refrigerant is crossed cold efficiency and reach maximum, performance is optimal, and increases unit efficiency.
Description of the drawings
Fig. 1 is the piping connection schematic diagram of one embodiment of parallel air-conditioning group of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, right with reference to the accompanying drawings and embodiments
The parallel air-conditioning group of the present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used for
It explains the present invention, is not intended to limit the present invention.
Referring to Fig.1, one embodiment of parallel air-conditioning group of the invention includes the first liquid supply pipe 1, the second liquid supply pipe 2 and two
The above economizer 3, for the first liquid supply pipe 1 for connecting condenser, the second liquid supply pipe 2 is more than two economical for connecting evaporator
Device 3 is arranged in parallel between the first liquid supply pipe 1 and the second liquid supply pipe 2, each economizer 3 have first entrance a, second entrance c,
First outlet b and second outlet d, first entrance a are connected to first outlet b, and second entrance c is connected to second outlet d；First enters
Mouth a the first electronic valves 5 of series connection connect the first liquid supply pipe 1, wherein the first end (upper end in figure) of the first electronic valve 5 connects
First liquid supply pipe 1, the second end of the first electronic valve 5（Lower end in figure）Connect first entrance a.First outlet b connections second supply
Liquid pipe 2, second entrance c are connected to the second end of the first electronic valve 5, and second outlet d is for being connected to compressor, per compressor pair
Answer an economizer 3.Preferably, the first electronic valve 5 is solenoid valve or motor-driven valve.
As a kind of embodiment, parallel air-conditioning group further includes heating power expansion valve 4, and each economizer 3 corresponds to one
Heating power expansion valve 4；The pipeline table between the second outlet d and compressor of economizer 3 is arranged in the temperature sensing package 8 of heating power expansion valve 4
Face, the entrance of heating power expansion valve 4 are connected to the second end of the first electronic valve 5, the outlet economizer 3 of heating power expansion valve 4
Second entrance c, the second outlet d of the pressure-equalizing pipe connection economizer 3 of heating power expansion valve 4.When in temperature sensing package 8 pressure and steaming
When the difference of hair pressure is more than the spring clamp force of heating power expansion valve 4, heating power expansion valve 4 is opened, to further be carried out to compressor
Protection.
Preferably, parallel air-conditioning group further includes the second electronic valve 7, and the second electronic valve 7 is connected on heating power expansion valve 4
Entrance and the second end of the first electronic valve 5 between.Second electronic valve 7 is also solenoid valve or motor-driven valve.
The first end series connection shut-off valve 6 of first electronic valve 5 connects the first liquid supply pipe 1, the first outlet b strings of economizer 3
Join shut-off valve 6 and connect the second liquid supply pipe 2, setting shut-off valve 6 facilitates repair to replace accessory.
Before the super-cooling pipeline of economizer 3, increase by first electronic valve 5, control mode is：When certain compressor stops
When only running, corresponding first electronic valve 5 is closed, and to which liquid coolant would not flow through useless economizer 3, that is, is pressed
Contracting machine with its corresponding to the synchronous unlatching of the first electronic valve 5 and close synchronously pass through from the condensed liquid coolant of condenser
It is subcooled after economizer 3, when there is compressor not start in refrigeration system, then the economizer 3 corresponding to it does not just act as
With at this moment, the first electronic valve 5 corresponding to the compressor not started is closed, in this way, it is prevented that refrigerant liquid is from useless
Economizer flow through, increase the degree of supercooling of unit at part load, increase unit efficiency.First electronic valve is set,
So that liquid coolant is not flowed through useless economizer 3, reaches maximum to make refrigerant cross cold efficiency.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of parallel air-conditioning group, which is characterized in that including：
First liquid supply pipe, for connecting condenser；
Second liquid supply pipe, for connecting evaporator；
More than two economizers, described two above economizers are arranged in parallel in first liquid supply pipe and second liquid supply pipe
Between, each economizer has first entrance, second entrance, first outlet and second outlet, the first entrance and institute
First outlet connection is stated, the second entrance is connected to the second outlet；The first electronic valve of the first entrance series connection connects
First liquid supply pipe is connect, the first end of first electronic valve connects first liquid supply pipe, first electronic valve
Second end connect the first entrance, the first outlet connects second liquid supply pipe, described in the second entrance connection
The second end of first electronic valve, the second outlet correspond to an economizer per compressor for being connected to compressor；
Compressor with its corresponding to the first electronic valve it is synchronous unlatching and close synchronously, when certain compressor does not start,
The first electronic valve corresponding to it is closed.
2. parallel air-conditioning group according to claim 1, it is characterised in that：
First electronic valve is solenoid valve or motor-driven valve.
3. parallel air-conditioning group according to claim 2, it is characterised in that：
Further include heating power expansion valve, each economizer corresponds to a heating power expansion valve；
The pipeline surface that the temperature sensing package of the heating power expansion valve is arranged between the second outlet and the compressor；
The entrance of the heating power expansion valve is connected to the second end of first electronic valve, the outlet of the heating power expansion valve
The second entrance, the pressure-equalizing pipe of the heating power expansion valve are connected to the second outlet of the economizer.
4. parallel air-conditioning group according to claim 3, it is characterised in that：
Further include the second electronic valve, second electronic valve is connected on the entrance of the heating power expansion valve and first electricity
Between the second end of sub- valve.
5. according to claim 1-4 any one of them parallel air-conditioning groups, it is characterised in that：
Further include more than two shut-off valves；
The first end series connection shut-off valve connection first liquid supply pipe of first electronic valve, the first of the economizer
The outlet series connection shut-off valve connects second liquid supply pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722357.6A CN104729160B (en) | 2013-12-24 | 2013-12-24 | Parallel air-conditioning group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310722357.6A CN104729160B (en) | 2013-12-24 | 2013-12-24 | Parallel air-conditioning group |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104729160A CN104729160A (en) | 2015-06-24 |
| CN104729160B true CN104729160B (en) | 2018-10-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310722357.6A Active CN104729160B (en) | 2013-12-24 | 2013-12-24 | Parallel air-conditioning group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104729160B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551182A (en) * | 2008-03-31 | 2009-10-07 | 海尔集团公司 | Variable frequency air conditioner cooling liquid circulating method and system |
| CN102620362A (en) * | 2012-03-27 | 2012-08-01 | 美的集团有限公司 | Low-temperature strong-heat multi-split air conditioning system |
| CN202835949U (en) * | 2012-08-28 | 2013-03-27 | 广东美的电器股份有限公司 | Novel multiple on-line air conditioning system |
| CN103292388A (en) * | 2013-06-08 | 2013-09-11 | 张家港市江南利玛特设备制造有限公司 | Refrigerating system for engine room |
| CN203744613U (en) * | 2013-12-24 | 2014-07-30 | 珠海格力电器股份有限公司 | Parallel air conditioner unit |
-
2013
- 2013-12-24 CN CN201310722357.6A patent/CN104729160B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551182A (en) * | 2008-03-31 | 2009-10-07 | 海尔集团公司 | Variable frequency air conditioner cooling liquid circulating method and system |
| CN102620362A (en) * | 2012-03-27 | 2012-08-01 | 美的集团有限公司 | Low-temperature strong-heat multi-split air conditioning system |
| CN202835949U (en) * | 2012-08-28 | 2013-03-27 | 广东美的电器股份有限公司 | Novel multiple on-line air conditioning system |
| CN103292388A (en) * | 2013-06-08 | 2013-09-11 | 张家港市江南利玛特设备制造有限公司 | Refrigerating system for engine room |
| CN203744613U (en) * | 2013-12-24 | 2014-07-30 | 珠海格力电器股份有限公司 | Parallel air conditioner unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104729160A (en) | 2015-06-24 |
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