CN203550349U - Chiller capable of being started under high pressure differential - Google Patents
Chiller capable of being started under high pressure differential Download PDFInfo
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- CN203550349U CN203550349U CN201320582264.3U CN201320582264U CN203550349U CN 203550349 U CN203550349 U CN 203550349U CN 201320582264 U CN201320582264 U CN 201320582264U CN 203550349 U CN203550349 U CN 203550349U
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- compressor
- condenser
- valve
- pipeline
- high pressure
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Abstract
The utility model relates to cooling equipment, in particular to a chiller capable of being started under high pressure differential. The chiller comprises a compressor, a condenser and an evaporator which are in sequential cycle communication via a pipeline; a check valve is arranged on the pipeline between a compressor exhaust port and a condenser inlet; a bypass pipeline with one segment communicated with the evaporator is disposed between the compressor exhaust port and the check valve; a control valve is mounted on the bypass pipeline. The chiller is simple in structure and easy to operate. Due to the fact that the bypass pipeline with the control valve is disposed between the compressor exhaust port and the check valve and communicated with the evaporator, the compressor can smoothly push the check valve to open, and thus, not only is compressor surge avoided, but also the control valve is closed when the compressor is in normal operation. As a result, the compressor exhaust port and the evaporator are disconnected, and the phenomenon is avoided that cooling capacity declines when refrigerants do not pass the condenser.
Description
Technical field
The utility model relates to a kind of refrigeration plant, is specifically related to a kind of handpiece Water Chilling Units that can start under High Pressure Difference.
Background technology
In field of central air-conditioning, large-scale handpiece Water Chilling Units has occupied most market at present.Mostly application item all adopts the unit of multi-machine heads, or many units connected in series or parallel form, to reach the demand of large cold.For Double-head centrifugal refrigerating machines or many situations that the series connection of single-head centrifugal refrigerating machines is used; when a compressor (unit) moves; under the condition that height pressure reduction has been set up; while restarting an other compressor (unit); the compressor (unit) rising is afterwards to start under the condition that has pressure reduction; when pressure reduction is larger, cannot push the unit rising after causing open check (non-return) valve on pipeline, finally cause compressor surge to be shut down.Therefore researching and developing a kind of unit that can start under High Pressure Difference, is useful for meeting the application conditions that client is changeable.
Utility model content
The technical problems to be solved in the utility model is the phenomenon that prevents that compressor surge that handpiece Water Chilling Units causes the in the situation that of High Pressure Difference from shutting down.
For solving the problems of the technologies described above, the utility model provides a kind of handpiece Water Chilling Units that can start under High Pressure Difference, comprise by pipeline circulate be successively communicated with compressor, condenser and evaporimeter, on pipeline between exhaust outlet and the condenser inlet of described compressor, be provided with check (non-return) valve, between the exhaust outlet of described compressor and check (non-return) valve, be provided with one section of by-pass line being connected with evaporimeter, on described by-pass line, control valve be installed.
The beneficial effects of the utility model are: the utility model is simple in structure, easy to operate.Between the exhaust outlet of compressor and check (non-return) valve, be provided with the by-pass line being connected with evaporimeter, set up enough refrigerant flows and pressure, made to compress function and successfully push check (non-return) valve open, not only avoided the surge of compressor, also reduce the pressure while starting, thereby reduced the loss of power; In addition, on this section of by-pass line, control valve is housed, after compressor runs well, can closed control valve to disconnect being connected of exhaust outlet of compressor and evaporimeter, thereby the refrigerating capacity decline phenomenon of having avoided cold-producing medium not bring by condenser.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
In figure: 1-compressor, 2-evaporimeter, 3-check (non-return) valve, 4-condenser, 5-expansion valve, 6-control valve, 7-by-pass line.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, the utility model comprise by pipeline circulate be successively communicated with compressor 1, condenser 4 and evaporimeter 2, on pipeline between the exhaust outlet of described compressor 1 and condenser 4 entrances, be provided with check (non-return) valve 3, on pipeline between described condenser 4 outlets and evaporimeter 2, be provided with expansion valve 5, between the exhaust outlet of described each compressor 1 and check (non-return) valve 3, be provided with one section of by-pass line 7 being connected with evaporimeter 2, on this section of by-pass line 7, control valve 6 be installed.This compressor 1 can be Double-head centrifugal refrigerating machines or be in series for many single-head centrifugal refrigerating machines.
During work, compressor 1 absorbs the refrigerant gas of low pressure from evaporimeter 2, refrigerant gas becomes the refrigerant gas of high pressure after compressor 1 compression, it is in check (non-return) valve 3 enters condenser 4, cold-producing medium is condensed into the high-pressure refrigerant of liquid in condenser 4, and flowing to expansion valve 5 by condenser 4 outlets, the refrigerant liquid that high pressure liquid refrigerant becomes low-pressure low-temperature after expansion valve 5 throttlings enters the interior evaporation of evaporimeter 2, thereby forms the kind of refrigeration cycle of a standard.When starting a compressor 1 again, because unit starts under High Pressure Difference, check (non-return) valve 6 front ends are communicated with evaporimeter 2 and belong to low-pressure cavity, the condenser 4 that its rear end is communicated with belongs to high pressure chest, check (non-return) valve 3 can close, and due at the exhaust outlet of each compressor 1 to having increased a by-pass line 7 that directly leads to evaporimeter 2 before check (non-return) valve 3, and evaporimeter 2 belongs to a low-pressure cavity, therefore the cold-producing medium that the compressor 1 at this moment starting is discharged can be in by-pass line 7 imports evaporimeter 2, thereby formed one local by compressor 1 to by-pass line 7 to evaporimeter 2 again to the circulation of compressor 1.While so just having avoided compressor 1 to start, cold-producing medium cannot be discharged, cause compressor 1 surge shut down and cannot complete the phenomenon of startup, in addition, also reduce pressure when compressor 1 starts, thereby reduced the loss of power; And control valve 6 is set on by-pass line 7, at compressor 1, can expeditely get into smooth, set up enough refrigerant flows and pressure, and satisfied opening after check (non-return) valve 3 required flow and pressure, this by-pass line 7 can be closed, thereby avoid the cold-producing medium that compressor 1 is discharged through condenser 4, do not process and cause refrigerating capacity to decline.Utilize after this by-pass line 7, as long as allowing under the condition of operation at unit, the startup of lag compressor 1 is the restriction of pressure difference no longer.
The above; be only the specific embodiment of the present utility model, it should be pointed out that any those of ordinary skill in the art are in the disclosed technical scope of the utility model; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.
Claims (1)
1. the handpiece Water Chilling Units that can start under High Pressure Difference, comprise by pipeline circulate be successively communicated with compressor, condenser and evaporimeter, on pipeline between exhaust outlet and the condenser inlet of described compressor, be provided with check (non-return) valve, it is characterized in that: between the exhaust outlet of described compressor and check (non-return) valve, be provided with one section of by-pass line being connected with evaporimeter, on described by-pass line, control valve be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582264.3U CN203550349U (en) | 2013-09-18 | 2013-09-18 | Chiller capable of being started under high pressure differential |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320582264.3U CN203550349U (en) | 2013-09-18 | 2013-09-18 | Chiller capable of being started under high pressure differential |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203550349U true CN203550349U (en) | 2014-04-16 |
Family
ID=50468457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320582264.3U Expired - Lifetime CN203550349U (en) | 2013-09-18 | 2013-09-18 | Chiller capable of being started under high pressure differential |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203550349U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855318A (en) * | 2019-02-18 | 2019-06-07 | 青岛海尔空调电子有限公司 | A kind of magnetic suspension centrifugal chiller system |
| CN114857761A (en) * | 2022-06-02 | 2022-08-05 | 青岛海信日立空调系统有限公司 | Air conditioning system |
-
2013
- 2013-09-18 CN CN201320582264.3U patent/CN203550349U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855318A (en) * | 2019-02-18 | 2019-06-07 | 青岛海尔空调电子有限公司 | A kind of magnetic suspension centrifugal chiller system |
| CN114857761A (en) * | 2022-06-02 | 2022-08-05 | 青岛海信日立空调系统有限公司 | Air conditioning system |
| CN114857761B (en) * | 2022-06-02 | 2023-11-28 | 青岛海信日立空调系统有限公司 | Air Conditioning System |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |