CN204301374U - A kind of can zero load run Screw chiller - Google Patents
A kind of can zero load run Screw chiller Download PDFInfo
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- CN204301374U CN204301374U CN201420716011.5U CN201420716011U CN204301374U CN 204301374 U CN204301374 U CN 204301374U CN 201420716011 U CN201420716011 U CN 201420716011U CN 204301374 U CN204301374 U CN 204301374U
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- condenser
- evaporimeter
- gas bypass
- bypass line
- zero load
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Abstract
The Screw chiller that the utility model provides a kind of zero load to run, comprises helical-lobe compressor, evaporimeter, condenser, oil eliminator, throttling arrangement, arranges one section of hot gas bypass line in condenser overhead.The utility model is by being arranged at the hot gas bypass line between evaporimeter and condenser; and automatically can regulate the valve of aperture; automatic control hot-gas bypass amount; minimum handpiece Water Chilling Units 0% load operation and the non-stopped status of realizing is the refrigerating medium needing annual 24 hours to keep the occasion of steady temperature to provide steady temperature.
Description
Technical field
The present invention relates to the central air conditioner main machine system that cold water is provided, especially a kind of can zero load run Screw chiller.
Background technology
The large-scale handpiece Water Chilling Units that screw-type water chiller is Chinese and even in world's refrigerating field, application is maximum.Screw-type water chiller comprises helical-lobe compressor, evaporimeter and condenser.Wherein, screw compressor sucks refrigerant vapour from evaporimeter, after overcompression, refrigerant vapour enters condenser, within the condenser, the liquid under certain pressure is condensed into after refrigerant vapour and cooling medium carry out heat exchange, condensed fluid enters evaporimeter, in evaporimeter, carry out heat exchange with refrigerating medium, condensed fluid absorbs heat of vaporization and becomes gas, and refrigerating medium releases heat, temperature reduces, thus achieving cooling object, the refrigerant vapour then in evaporimeter is sucked by compressor again, starts to circulate next time; Form a refrigeration system circuit.
Zero load is run, and refer to unit in the process run, evaporimeter inflow temperature and leaving water temperature approximately equal, namely evaporimeter does not produce refrigerating capacity substantially, and miscellaneous part is if compressor, condenser etc. are in normal work.When not power-off, technique can be applied to the mechanism that hospital etc. needs to keep for 24 hours constant indoor temperature.
The present invention is directed to above-mentioned refrigeration system circuit and propose new structure, the running of unit zero load can be realized and do not shut down.
Summary of the invention
The technical problem that the present invention mainly solves be to provide a kind of can zero load run Screw chiller, realize screw-type water chiller in the process run, evaporimeter inflow temperature and leaving water temperature approximately equal, namely evaporimeter does not produce refrigerating capacity substantially, and miscellaneous part is if compressor, condenser etc. are in normal work.
For solving the problems of the technologies described above; be made up of helical-lobe compressor, evaporimeter, condenser, electric expansion valve, oil eliminator based on this Screw chiller; disclose a kind of can zero load run screw-type water chiller; by being arranged at the hot gas bypass line between evaporimeter and condenser; and automatically can regulate the valve of aperture; automatic control hot-gas bypass amount, minimumly realizes handpiece Water Chilling Units 0% load operation and non-stopped status.For the refrigerating medium needing annual 24 hours to keep the occasion of steady temperature to provide steady temperature.The technical solution used in the present invention is: can zero load run Screw chiller, comprise helical-lobe compressor, evaporimeter, condenser, oil eliminator, throttling arrangement, one section of hot gas bypass line be set between condenser and evaporimeter.Refrigerating capacity when high-temperature gas is wherein to absorb evaporator operation state when utilizing condenser working state in cryogenic liquid wherein, that is, originally should be absorbed by refrigerating medium and be delivered to end the high-temperature gas that is condensed in device of refrigerating capacity absorb, thus the refrigerating capacity that evaporimeter is produced minimizing.
Preferably, connect condenser overhead in hot gas bypass line one end, the other end connects base of evaporator.
Further, the valve that can regulate aperture is automatically installed in hot gas bypass line.
The invention has the beneficial effects as follows: Screw chiller zero load Nonstop running machine can be realized; Minimumly realize handpiece Water Chilling Units 0% load operation and non-stopped status; When not power-off, the mechanism that needs keep constant indoor temperature for 24 hours can be applied to; For the refrigerating medium needing annual 24 hours to keep the occasion of steady temperature to provide steady temperature.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention,
1-evaporimeter in figure, 2-can regulate the valve of aperture automatically, 3-hot gas bypass line, 4-condenser.
Detailed description of the invention
Below in conjunction with accompanying drawing, present pre-ferred embodiments is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art.
Can zero load run Screw chiller, comprise helical-lobe compressor, evaporimeter, condenser, oil eliminator, throttling arrangement, one section of hot gas bypass line be set between condenser and evaporimeter.Connect condenser overhead in hot gas bypass line one end, the other end connects base of evaporator.The valve that one can regulate aperture is automatically installed in hot gas bypass line.
Operationally, evaporimeter is in low-temperature condition to screw-type water chiller, and top is cryogenic gas, and bottom is cryogenic liquid, and condenser is in the condition of high temperature, and its top is high-temperature gas.Arrange one section of hot gas bypass line in condenser overhead, one end is communicated with condenser overhead, and the other end is communicated with base of evaporator, intermediate duct is arranged the valve (as electric expansion valve) that an aperture is adjustable, in order to regulate tolerance.
Operation principle of the present invention: needing the occasion keeping steady temperature, when this occasion temperature do not arrive require temperature time, unit cuts off being communicated with of condenser and evaporimeter by the valve of closing in bypass line, normally run through evaporimeter generation refrigerating capacity and reach target temperature to reduce water temperature, and close along with target temperature, compressor is off-load gradually, after this occasion temperature reaches set point, compressor off-load is to minimum, in general, now still there is the refrigerating capacity of more than 10%, now, need to keep the occasion temperature fluctuation of steady temperature excessive in order to avoid temperature continues to be lowered to cause, unit opens hot gas bypass line, high-temperature gas bypass in condenser is entered in the cryogenic liquid of base of evaporator, residue refrigerating capacity in evaporimeter is absorbed, along with the difference of valve opening in hot gas bypass line, the circulation of high-temperature gas is also just different, the ability absorbing refrigerating capacity in evaporimeter is also just different, along with the increase of valve opening, finally can realize high-temperature gas and absorb refrigerating capacity in evaporimeter completely, realize into, the temperature going out the refrigerating medium of evaporimeter is equal, namely unit operationally keeps the constant leaving water temperature state of evaporimeter always, for needing to keep the occasion of steady temperature to provide the refrigerating medium of temperature constant, unit realizes zero load and runs and do not shut down.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. can zero load run a Screw chiller, comprise helical-lobe compressor, evaporimeter, condenser, oil eliminator, throttling arrangement, it is characterized in that: one section of hot gas bypass line is set between described condenser and described evaporimeter.
2. according to claim 1 can the Screw chiller that runs of zero load, it is characterized in that: described hot gas bypass line one end connects condenser overhead, the other end connects base of evaporator.
3. according to claim 1 can the Screw chiller that runs of zero load, it is characterized in that: a valve that automatically can regulate aperture is installed in described hot gas bypass line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716011.5U CN204301374U (en) | 2014-11-25 | 2014-11-25 | A kind of can zero load run Screw chiller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420716011.5U CN204301374U (en) | 2014-11-25 | 2014-11-25 | A kind of can zero load run Screw chiller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204301374U true CN204301374U (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420716011.5U Active CN204301374U (en) | 2014-11-25 | 2014-11-25 | A kind of can zero load run Screw chiller |
Country Status (1)
| Country | Link |
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| CN (1) | CN204301374U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766302A (en) * | 2017-02-20 | 2017-05-31 | 英得艾斯（上海）冷冻空调有限公司 | A kind of handpiece Water Chilling Units and its control method |
| CN109631376A (en) * | 2018-11-27 | 2019-04-16 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method and system thereof |
-
2014
- 2014-11-25 CN CN201420716011.5U patent/CN204301374U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766302A (en) * | 2017-02-20 | 2017-05-31 | 英得艾斯（上海）冷冻空调有限公司 | A kind of handpiece Water Chilling Units and its control method |
| CN106766302B (en) * | 2017-02-20 | 2023-09-08 | 英得艾斯（上海）冷冻空调有限公司 | Water chilling unit and control method thereof |
| CN109631376A (en) * | 2018-11-27 | 2019-04-16 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method and system thereof |
| WO2020108170A1 (en) * | 2018-11-27 | 2020-06-04 | 珠海格力电器股份有限公司 | Screw-type chiller, control method for same, and system |
| CN109631376B (en) * | 2018-11-27 | 2022-01-28 | 珠海格力电器股份有限公司 | Screw type water chilling unit and control method and system thereof |
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