CN202171298U - Water-cooled digital multi-connection type air conditioning unit - Google Patents
Water-cooled digital multi-connection type air conditioning unit Download PDFInfo
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- CN202171298U CN202171298U CN2011202778211U CN201120277821U CN202171298U CN 202171298 U CN202171298 U CN 202171298U CN 2011202778211 U CN2011202778211 U CN 2011202778211U CN 201120277821 U CN201120277821 U CN 201120277821U CN 202171298 U CN202171298 U CN 202171298U
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Abstract
A water-cooled digital multi-connection type air conditioning unit comprises a digital compressor (1), a constant-speed compressor (2) and sleeve type heat exchangers (4). The water-cooled digital multi-connection type air conditioning unit is characterized in that the output ends of the digital compressor (1) and the constant-speed compressor (2) are simultaneously connected with the refrigerant inlets of the sleeve type heat exchangers (4) through an oil separator (3); the refrigerant outlets of the sleeve type heat exchangers (4) are connected with the refrigerant inlet of a check valve (5); the refrigerant outlet of the check valve (5) is connected with an inlet end of a liquid valve (12); the outlet of the liquid valve (12) is respectively connected with the input ends of throttling boxes (7) through a branch pipe; the output ends of the throttling boxes (7) are respectively connected with the input ends of indoor units (6); the output ends of the indoor units (6) are connected with the output end of an air valve (13); the air valve is connected with the refrigerant inlet of a gas-liquid separator (8) through a copper filter (14); and the refrigerant outlet of the gas-liquid separator (8) is respectively connected with the refrigerant inlets of the digital compressor (1) and the constant speed compressor (2). By combining electromagnetic valves, the water-cooled digital multi-connection type air conditioning unit provided in the utility model and achieving refrigerating capacity adjustment through ordinary water pumps has the advantages of simple structure, low cost and long service lifetime.
Description
Technical field
The utility model relates to a kind of air-conditioning unit, especially a kind of water-cooled air-conditioning unit, the digital VRF Air Conditioning System of specifically a kind of water-cooled.
Background technology
As everyone knows; The digital VRF Air Conditioning System of water-cooled; Be a branch of VRV series, it is on the basis of air-cooled VRV, and air-cooled (blower fan+surface cooler) become water-cooled (cooling water loop+built-in double pipe heat exchanger); Form a kind of water pipe and do not enter the room, and only in the non-special-purpose machine room of vertical shaft and main frame; Main frame is positioned between indoor non-special equipment, and build and weight are littler, can do and pile up placement; A kind of air-conditioning mode that centralization and decentralization in the use combine.
In order to satisfy the digital VRF Air Conditioning System of water-cooled persistence and reliability operation under various loads (especially at underload) condition, handle so need to make corresponding techniques at condenser side.General simple way is to adopt the variable water volume design, and the variable water volume design often has following several kinds of methods for designing.
1) adopts variable frequency pump, change discharge.And because the frequency converter of variable frequency pump is to reach purpose of energy saving through reducing rotating speed of motor; Motor speed slow-speed of revolution operation meeting exerts an influence to the self-lubricating property of water pump itself, and the pump rotary speed of regulating through frequency converter at machine pressurize cooling stage is to be in the slow-speed of revolution certainly; Because frequency converter is through accepting to give the motor signal original work again after pcs signal is given to the motor signal again, the speed that must cause moving slows down, and influences the molding cycle of product; Frequency converter is come mention under the power again has a process, and in the meantime, the frequent acceleration starts, and can make that the motor feels hot, and it is aging to add speed motor, influences the life-span of motor;
2) adopt fixed water pump+electric control valve frequently, change discharge.And the discharge adjustable range of fixed water pump frequently is relatively narrow, and under the low load operation condition, pump capacity descends and is prone to cross critical point at unit, is prone to take place air pocket, the damage and the destruction that cause metal covering wall material (especially impeller).After near facing the wall and meditating bubble broke, liquid all around replenished rapidly under higher pressure, formed miniature jet, and impact is faced the wall and meditated, and causes metal fatigue damage.The free oxygen of separating out in the water during vaporization has very strong oxidation corroding metal.When bubble condenses, produce moment localized hyperthermia, high-temperature region and low-temperature space form thermocouple, produce thermocurrent, make the metal surface electrolysis.Make the metal surface form voids and pits shape cavity, continuous attenuate is until perforation, fracture.
Summary of the invention
The purpose of the utility model be to existing water-cooled air-conditioning unit because of adopt the variable water volume design cause the pump motor life-span short with or be prone to take place the problem that air pocket causes the water pump vane rapid wear, realize that through the magnetic valve break-make refrigerating capacity regulates the digital VRF Air Conditioning System of the water-cooled that can adopt common water pump thereby design is a kind of.
The technical scheme of the utility model is:
The digital VRF Air Conditioning System of a kind of water-cooled; Include digital compressor 1, constant speed compressor 2 and double pipe heat exchanger 4; The output that it is characterized in that described digital compressor 1 and constant speed compressor 2 is connected through the import of oil eliminator 3 with the cold-producing medium of double pipe heat exchanger 4 simultaneously; The refrigerant outlet of double pipe heat exchanger 4 connects the import of the cold-producing medium of check valve 5; The outlet of check valve 5 cold-producing mediums links to each other with the entrance point of liquid valve 12; The port of export of liquid valve 12 links to each other with the input of throttling box 7 respectively through branch pipe, and the output of throttling box 7 links to each other with the input of indoor set 6, and the output of indoor set 6 links to each other with the output of air valve 13; Air valve 13 links to each other with the refrigerant inlet of gas-liquid separator 8 through copper filter 14, and the outlet of the cold-producing medium of gas-liquid separator 8 links to each other with the refrigeration machine entrance point of constant speed compressor 2 with digital compressor 1 respectively.
Described double pipe heat exchanger 4 is formed in parallel by a plurality of small casing formula heat exchangers, and the output of a plurality of double pipe heat exchangers links to each other with the input of check valve 5 through at least 3 magnetic valves 9.
Be parallel with capillary 10 between the in-out end of described magnetic valve.
Described gas-liquid separator 8 is connected with balanced valve 11.
On the pipeline of the pipeline at described throttling box 7 two ends and connection air valve 13 and gas-liquid separator 8 filter 14 is installed all.
The beneficial effect of the utility model:
Thereby the utility model is through a plurality of small casing formula heats exchangers in parallel and make double pipe heat exchanger come the area of Adjustment System double-tube heat exchanger to guarantee the stable of compressor air-discharging and pressure of inspiration(Pi) through the magnetic valve of a plurality of parallel connections or the switch combination mode of a plurality of magnetic valves, has strengthened the persistence and the reliability of unit operation.
The utility model is through a parallelly connected capillary between the entrance end of magnetic valve; Even let electromagnetic valve body be under the closed condition; Also there is a spot of cold-producing medium of part to pass through double-tube heat exchanger; And then make that double pipe heat exchanger is to be in high pressure liquid storage state never; Thereby realize the accurate flow-control of cold-producing medium, avoid simultaneously since when system load demand lower, the part double-tube heat exchanger is in for a long time and makes cold-producing medium liquefaction and cause double-tube heat exchanger to become the problem of high pressure reservoir under the closed condition.
The utility model only need adopt common water pump can satisfy instructions for use, has simple in structurely, and control is convenient, the advantage that cost is low.
The combination of the utility model through magnetic valve realized utilizing common water pump to realize the purpose that refrigerating capacity is regulated, and has simple in structurely, and cost is low, the advantage that the life-span is long.
Description of drawings
Fig. 1 is the composition structural representation of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1.
The digital VRF Air Conditioning System of a kind of water-cooled; Include digital compressor 1, constant speed compressor 2 and double pipe heat exchanger 4; The output of digital compressor 1 and constant speed compressor 2 is connected through the import of oil eliminator 3 with the cold-producing medium of double pipe heat exchanger 4 simultaneously; Described double pipe heat exchanger 4 is by a plurality of small casing formula heat exchangers be formed in parallel (being four among Fig. 1); The output of a plurality of double pipe heat exchangers links to each other with the input of check valve 5 through at least 3 magnetic valves 9 (SV1, SV2, SV3), is parallel with capillary 10 between the in-out end of described magnetic valve.The refrigerant outlet of double pipe heat exchanger 4 connects the import of the cold-producing medium of check valve 5; The outlet of check valve 5 cold-producing mediums links to each other with the entrance point of liquid valve 12; The port of export of liquid valve 12 links to each other with the input of throttling box 7 respectively through branch pipe; The output of throttling box 7 links to each other with the input of indoor set 6; The output of indoor set 6 links to each other with the output of air valve 13, and air valve 13 links to each other with the refrigerant inlet of gas-liquid separator 8 through copper filter 14, and the outlet of the cold-producing medium of gas-liquid separator 8 links to each other with the refrigeration machine entrance point of constant speed compressor 2 with digital compressor 1 respectively.Also can be connected with balanced valve 11 during practical implementation, simultaneously at the pipeline at described throttling box 7 two ends and connect on the pipeline of air valve 13 and gas-liquid separator 8 filter 14 all is installed at described gas-liquid separator 8.
Among Fig. 1; Double pipe heat exchanger 4 is formed in parallel through 4 or a plurality of small casing formula heat exchangers; Thereby a plurality of double pipe heat exchangers come the area of Adjustment System double-tube heat exchanger to guarantee the stable of compressor air-discharging and pressure of inspiration(Pi) through 3 magnetic valves or a plurality of electromagnetic valve switch compound modes; The persistence and the reliability of unit operation have been strengthened; Simultaneously for fear of since when system load demand lower, the part double-tube heat exchanger is in for a long time and makes cold-producing medium liquefaction and cause double-tube heat exchanger to become the high pressure reservoir under the closed condition, so an all parallelly connected capillary between the entrance point that is employed in each magnetic valve and the port of export; Even make electromagnetic valve body be under the closed condition; The a spot of cold-producing medium of part is also arranged through double-tube heat exchanger, and then make that double pipe heat exchanger is to be in high pressure liquid storage state never, thereby realize the accurate flow-control of cold-producing medium.
The course of work of the utility model is:
Digital compressor 1, constant speed compressor 2 are connected through the import of oil eliminator 3 with the cold-producing medium of double pipe heat exchanger 4; Wherein double pipe heat exchanger 4 is through " sleeve pipe 1 "; Magnetic valve SV1 is in that " pass ", magnetic valve SV2 are in " pass ", magnetic valve SV3 is in " pass "; The refrigerant outlet of double pipe heat exchanger 4 inserts the import of check valve 5 cold-producing mediums; The outlet of check valve 5 cold-producing mediums is connected with the liquid valve; The liquid valve is connected with several throttling boxes 7, several indoor sets 6 respectively through several branch pipes, and several throttling boxes 7, several indoor sets 6 merge the back through some branch pipes and are connected with air valve, and air valve is connected with the copper filter inlet; The outlet of copper filter is connected with the refrigerant inlet of gas-liquid separator 8, and the outlet of the cold-producing medium of gas-liquid separator 8 is divided into two-way and gets back to digital compressor 1 and constant speed compressor 2 respectively.
The utility model can be formed the different refrigerating capacity output of realization through the difference of magnetic valve 9, and the switch combination mode of concrete magnetic valve is seen attached list shown in 1.
Table 1: the switch combination mode of magnetic valve
| ? | SV1 | SV2 | SV3 |
| 1 | Open | Close | Close |
| 2 | Open | Close | Close |
| 3 | Open | Open | Close |
| 4 | Open | Open | Open |
The utility model does not relate to all identical with the prior art prior art that maybe can adopt of part to be realized.
Claims (5)
1. the digital VRF Air Conditioning System of a water-cooled; Include digital compressor (1), constant speed compressor (2) and double pipe heat exchanger (4); The output that it is characterized in that described digital compressor (1) and constant speed compressor (2) is connected through the import of oil eliminator (3) with the cold-producing medium of double pipe heat exchanger (4) simultaneously; The refrigerant outlet of double pipe heat exchanger (4) connects the import of the cold-producing medium of check valve (5); The outlet of check valve (5) cold-producing medium links to each other with the entrance point of liquid valve (12); The port of export of liquid valve (12) links to each other with the input of throttling box (7) respectively through branch pipe, and the output of throttling box (7) links to each other with the input of indoor set (6), and the output of indoor set (6) links to each other with the output of air valve (13); Air valve (13) links to each other with the refrigerant inlet of gas-liquid separator (8) through copper filter (14), and the outlet of the cold-producing medium of gas-liquid separator (8) links to each other with the refrigeration machine entrance point of digital compressor (1) with constant speed compressor (2) respectively.
2. the digital VRF Air Conditioning System of water-cooled according to claim 1; It is characterized in that described double pipe heat exchanger (4) is formed in parallel by a plurality of small casing formula heat exchangers, the output of a plurality of double pipe heat exchangers links to each other with the input of check valve (5) through at least 3 magnetic valves (9).
3. the digital VRF Air Conditioning System of water-cooled according to claim 2 is characterized in that being parallel with capillary (10) between the in-out end of described magnetic valve.
4. the digital VRF Air Conditioning System of water-cooled according to claim 1 is characterized in that described gas-liquid separator (8) is connected with balanced valve (11).
5. the digital VRF Air Conditioning System of water-cooled according to claim 1 is characterized in that the pipeline at described throttling box (7) two ends and connects on the pipeline of air valve (13) and gas-liquid separator (8) filter (14) all is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202778211U CN202171298U (en) | 2011-08-02 | 2011-08-02 | Water-cooled digital multi-connection type air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202778211U CN202171298U (en) | 2011-08-02 | 2011-08-02 | Water-cooled digital multi-connection type air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202171298U true CN202171298U (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202778211U Expired - Lifetime CN202171298U (en) | 2011-08-02 | 2011-08-02 | Water-cooled digital multi-connection type air conditioning unit |
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| Country | Link |
|---|---|
| CN (1) | CN202171298U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266417A (en) * | 2014-09-30 | 2015-01-07 | 宁波奥克斯电气有限公司 | Refrigeration operating method of multi-split air conditioner in high temperature environment |
| CN109751786A (en) * | 2019-01-18 | 2019-05-14 | 广州市兆晶电子科技有限公司 | Cold-warm type heat recovery system and single cold type heat recovery system and its control method |
-
2011
- 2011-08-02 CN CN2011202778211U patent/CN202171298U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266417A (en) * | 2014-09-30 | 2015-01-07 | 宁波奥克斯电气有限公司 | Refrigeration operating method of multi-split air conditioner in high temperature environment |
| CN109751786A (en) * | 2019-01-18 | 2019-05-14 | 广州市兆晶电子科技有限公司 | Cold-warm type heat recovery system and single cold type heat recovery system and its control method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120321 |
|
| CX01 | Expiry of patent term |