CN201177333Y - Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube - Google Patents
Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube Download PDFInfo
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- CN201177333Y CN201177333Y CNU2008200046715U CN200820004671U CN201177333Y CN 201177333 Y CN201177333 Y CN 201177333Y CN U2008200046715 U CNU2008200046715 U CN U2008200046715U CN 200820004671 U CN200820004671 U CN 200820004671U CN 201177333 Y CN201177333 Y CN 201177333Y
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Abstract
The utility model discloses a perennial refrigerating air-cooled water chilling unit which utilizes outdoor cold air in winter as an auxiliary cold source and is provided with an auxiliary refrigerating coil. The whole unit consists of two parts of a vapor compression refrigerating system and an auxiliary coil refrigerating system, and directly utilizes the outdoor low-temperature air - the natural cold source for free for cold supply when the ambient temperature is low enough. The perennial refrigerating air-cooled water chilling unit avoids the key technical problems of high and low pressure protection, difficult starting at a low ambient temperature, refrigeration of the unit, water freezing and so on when a general air-cooled water chilling unit is operated at the low ambient temperature, and can be safely and stably operated at a high operating ambient temperature between 15 and 43 DEG C. When the ambient temperature is between 5 DEG C below zero and 2 DEG C below zero, a compressor can be stopped and the cold air is directly used for cooling an ethylene glycol water solution in the auxiliary coil for refrigeration, thereby the power consumption of the unit is greatly reduced and the season energy efficiency ratio SEER of the unit is improved; and the perennial refrigerating air cooled water chilling unit has positive significance in the aspect of energy conservation and exhaust reduction.
Description
Technical field:
The utility model relates to refrigeration technology field, be specially adapted in-15 ℃～43 ℃ ambient temperature ranges can the year round cooling operation the wind-cooled cold-water unit.
Background technology:
Air-cooled handpiece Water Chilling Units adopts the air under the environment temperature to come the cooling refrigeration agent, has saved parts such as cooling tower, makes to have obtained the system architecture compactness using widely.GB stipulates that the operation air themperature scope of this type of unit cooling condition is 21～43 ℃.Some unit is only just started shooting when environment temperature is higher cold is provided, the handpiece Water Chilling Units of using as some air conditioning conditions.But along with the progress of expanding economy with society, some users propose higher requirement to such unit, require to realize whole year operation, and enough colds are provided the whole year.These users mainly show as special industries such as computer station, medical treatment, food production, operating room, medicine manufacturing, Chemical Manufacture.The needs owing to technology that have among these users require still can provide enough colds winter under-15 ℃ environment temperature.This easily brings compressor high voltage protective, chilled water easy freezing, easily causes problem such as press fault with regard to bringing under the low ambient temperature unit starting difficulty, low ambient temperature to move easy low-voltage variation, high ambient temperature for such unit.
Under low ambient temperature, move the problems that exist at air-cooled handpiece Water Chilling Units, at present main solution change heat transfer temperature difference, regulate air quantity, reduce effective condensation area and reduce measures such as condenser duty and throttle mechanism in parallel by condenser surface.Efficient was hanged down when existing solution was moved under low ambient temperature except unit, the minimum environment temperature of its operation also was subjected to the restriction of the high and low pressure range of operation of press permission, and that does in the control can accomplish about-10 ℃ preferably.In addition, unit is worked under low ambient temperature for a long time and will be reduced its service life.
Summary of the invention:
To be the wind-cooled cold-water unit that solves refrigeration throughout the year start key issues such as difficulty and unit be antifreeze because of it to the purpose of this utility model under high-low pressure protection that operation under the annual outdoor climate conditions brings, low ambient temperature; make the operation that unit can be safe, stable under-15 ℃～43 ℃ so big operating ambient temperatures, improve the refrigerating efficiency under the unit low ambient temperature.
The utility model considers that the characteristics of wind-cooled cold-water unit winter operation think that lower environment temperature itself is exactly good low-temperature receiver, made full use of this natural free low-temperature receiver and carried out taking into account preferably, a kind of wind-cooled cold-water unit of energy-saving long-term refrigerating operaton is provided with wind-cooled cold-water unit own characteristic.
The concrete technical scheme that the utility model adopted is: whole wind-cooled cold-water unit is made up of two refrigeration systems.Wherein compressor, air-cooled condenser, reservoir, device for drying and filtering, heating power expansion valve, bushing type evaporimeter etc. are formed vapour compression refrigeration system jointly; Auxiliary heat exchange coil, plate type heat exchanger and the water pump that is attached thereto and valve member have constituted the ethylene glycol auxiliary cooling system; In addition, also relate to user side chilled water system, wind side system and control system etc. in the unit.Facilities such as two refrigeration system common axis flow fans, plate type heat exchanger, water pump.
The foundation that environment temperature is switched as these two kinds of refrigeration modes.The determining of environment temperature directly influences the area of the supplementary heat exchanger of the heat transfer temperature difference of ethylene glycol auxiliary cooling mode and required coupling.The environment temperature switching point is too high, and then to join the big cost of supplementary heat exchanger area higher, the too low then unit of switching point energy-conservation not fairly obvious.Here the unit chilled water determines that switching temperature point is-5 ℃ (if unit is respectively 15 ℃/10 ℃ into and out of water temperature ,-2 ℃ are named a person for a particular job and risen to its switching temperature) when water temperature is 12 ℃/7 ℃ respectively.
When environment temperature is higher than switching temperature point, compression-type refrigerating system work.At this moment, the magnetic valve that leads to casing tube evaporator is opened, and leads to the closed electromagnetic valve of auxiliary heat exchange coil.The rotating speed of condenser fan is by frequency conversion device control frequently, and its control signal is taken from condensing pressure.
When environment temperature was put smaller or equal to switching temperature, compressor cut out, aerofoil fan and water pump remain in operation, and the waterway electromagnetic valve that leads to supplementary heat exchanger after 5 seconds of delaying time is opened, and leads to the closed electromagnetic valve of casing tube evaporator.Unit adopts auxiliary coil pipe to carry out cooling, and this moment, the frequency variation signal of aerofoil fan was controlled according to supplementary heat exchanger outlet ethylene glycol solution temperature signal.
Because the glycol water in the refrigerating medium loop has lighter corrosiveness to coating steel pipe, therefore should consider to add therein a certain amount of corrosion inhibiter.The less relatively and sealing of the ethylene glycol loop that adopts in the utility model, this brings great convenience also for actual operation maintenance.
The utility model is-5 ℃ or-2 ℃ in environment temperature just can cut off compressor down, directly cool off the refrigerating medium of assisting in the coil pipe with surrounding air, the power consumption that significantly reduces unit reduces the discharging of condensation heat to environment, improve the seasonal energy efficiency ratio (seer) SEER of unit, on energy-conservation, had positive meaning.
In addition, this angle of slave machine sees that blower fan and water circulating pump all are shared, and the increase of cost concentrates on auxiliary coil pipe, dual analog amount input converter, waterway electromagnetic valve etc.The cost of these increases and the electricity charge of being saved in a year remain basically stable.Simultaneously, compressor has been avoided more abominable running environment.So both avoided running into when press moves under low ambient temperature lowly force down, problems such as low ambient temperature unit starting difficulty, make that again its service life obtains prolonging, can reduce the life cycle cost of unit.
Description of drawings:
Concrete technical scheme schematic diagram of the present utility model
The specific embodiment:
As shown in drawings, compressor (1), air-cooled condenser (4), high pressure reservoir (11), device for drying and filtering (10), visor (8), heating power expansion valve (7), bushing type evaporimeter (15) have been formed vapour compression refrigeration system jointly.The condensation air quantity is provided by axial flow blower (5), and wherein circulating pump (18), indoor plate type heat exchanger (12), the waterway electromagnetic valve (16) and the water route check-valves a (14) that lead to casing tube evaporator have formed the glycol water refrigerating medium loop in the steam compression type jointly.
In the accompanying drawing, auxiliary cooling coil pipe (3), water route check-valves b (13), circulating pump (18), indoor plate type heat exchanger (12), the waterway electromagnetic valve (17) that leads to the auxiliary cooling coil pipe have been formed auxiliary cooling system jointly.The required cooling air quantity of its refrigeration is still provided by axial flow blower (5).
When environment temperature measuring point (2) institute measured value when setting the switching temperature value, vapour compression refrigeration system work.At this moment, waterway electromagnetic valve (16) is opened, and (17) are closed.Compressor (1), axial flow blower (5), circulating pump (18) work.Wherein the frequency change control signal of condenser fan offers frequency converter (6) by pressure sensor (9).
When environment temperature measuring point (2) measured value when setting the switching temperature value, unit adopts the auxiliary cooling coil system to carry out cooling.At this moment, waterway electromagnetic valve (17) was opened after compressor (1) cut out, delays time 5 seconds, and (16) are closed.Axial flow blower (5), water circulating pump (18) operate as normal.Wherein condenser fan relies on out the glycol water temperature signal (19) of auxiliary cooling coil pipe to carry out VFC.So both saved consumption of compressor, and reduced condensation heat again and had positive meaning to the energy-saving and emission-reduction aspect that is emitted on of environment.
Claims (4)
1. be with the long-term refrigeration wind-cooled cold-water unit of assisting coil pipe for one kind, form vapour compression refrigeration system jointly by compressor, air-cooled condenser, reservoir, device for drying and filtering, heating power expansion valve, bushing type evaporimeter etc., wherein circulating pump, indoor plate type heat exchanger, the waterway electromagnetic valve that leads to casing tube evaporator and the glycol water loop that the water route check-valves has been formed steam compression type middle sleeve formula evaporimeter refrigerating medium side jointly; Formed auxiliary cooling system jointly by auxiliary cooling coil pipe, water route check-valves, circulating pump, indoor plate type heat exchanger, the waterway electromagnetic valve that leads to the auxiliary cooling coil pipe.
2. a kind of long-term refrigeration wind-cooled cold-water unit with auxiliary coil pipe according to claim 1 is characterized in that: equipment such as two refrigeration system common axis flow fans, water circulating pump, indoor plate type heat exchanger.
3. a kind of long-term refrigeration wind-cooled cold-water unit according to claim 1 with auxiliary coil pipe, it is characterized in that: the switching of two kinds of refrigeration modes relies on environment temperature as basis for estimation, environment temperature is greater than when setting value, the waterway electromagnetic valve that the auxiliary cooling coil pipe was driven, led to the waterway electromagnetic valve that leads to double-tube heat exchanger closes vapour compression refrigeration system work; Environment temperature is smaller or equal to when setting value, and the auxiliary cooling coil pipe is led in compression office, time-delay after 5 seconds waterway electromagnetic valve is opened, and the waterway electromagnetic valve that leads to double-tube heat exchanger is closed, axial flow blower, water circulating pump operate as normal.
4. a kind of long-term refrigeration wind-cooled cold-water unit according to claim 1 with auxiliary coil pipe, it is characterized in that: the rotating speed of aerofoil fan adopts the Frequency Converter Control of dual analog amount input, when vapour compression refrigeration system was worked, condensing pressure was as control signal; When switching to bracket panel control cooling system, its control signal is from auxiliary cooling coil pipe glycol water outlet temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200046715U CN201177333Y (en) | 2008-01-25 | 2008-01-25 | Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200046715U CN201177333Y (en) | 2008-01-25 | 2008-01-25 | Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177333Y true CN201177333Y (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200046715U Expired - Fee Related CN201177333Y (en) | 2008-01-25 | 2008-01-25 | Perennial refrigeration wind-cooling cold water machine set with auxiliary coil tube |
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| CN (1) | CN201177333Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929754A (en) * | 2010-09-20 | 2010-12-29 | 阿尔西制冷工程技术（北京）有限公司 | Air-cooled water cooling unit |
| CN102226598A (en) * | 2011-06-02 | 2011-10-26 | 天津海天缘科技发展有限公司 | Air-cooled water chiller unit capable of switching natural cold source |
| CN103438599A (en) * | 2013-08-25 | 2013-12-11 | 龚颖 | Secondary transduction design scheme of household air conditioner |
| CN103589509A (en) * | 2012-08-17 | 2014-02-19 | 李宁 | Energy-saving environment-friendly winterization technology of edible oil |
| CN105737436A (en) * | 2016-02-26 | 2016-07-06 | 孙业国 | Water chilling unit integrating air cooling and compression refrigeration and control method |
| CN106482252A (en) * | 2015-08-25 | 2017-03-08 | 沈阳乐金空调净化工程有限公司 | A kind of winter energy reclaims refrigeration system and its refrigerating method |
| CN107062688A (en) * | 2017-01-20 | 2017-08-18 | 合肥天鹅制冷科技有限公司 | The cold liquid machine of wide temperature air cooling island |
| CN108377628A (en) * | 2018-01-26 | 2018-08-07 | 青岛海尔空调电子有限公司 | A kind of control method and device of the radiator fan of handpiece Water Chilling Units power control cabinet |
-
2008
- 2008-01-25 CN CNU2008200046715U patent/CN201177333Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929754A (en) * | 2010-09-20 | 2010-12-29 | 阿尔西制冷工程技术（北京）有限公司 | Air-cooled water cooling unit |
| CN101929754B (en) * | 2010-09-20 | 2011-09-28 | 阿尔西制冷工程技术（北京）有限公司 | Air-cooled water cooling unit |
| CN102226598A (en) * | 2011-06-02 | 2011-10-26 | 天津海天缘科技发展有限公司 | Air-cooled water chiller unit capable of switching natural cold source |
| CN103589509A (en) * | 2012-08-17 | 2014-02-19 | 李宁 | Energy-saving environment-friendly winterization technology of edible oil |
| CN103438599A (en) * | 2013-08-25 | 2013-12-11 | 龚颖 | Secondary transduction design scheme of household air conditioner |
| CN106482252A (en) * | 2015-08-25 | 2017-03-08 | 沈阳乐金空调净化工程有限公司 | A kind of winter energy reclaims refrigeration system and its refrigerating method |
| CN105737436A (en) * | 2016-02-26 | 2016-07-06 | 孙业国 | Water chilling unit integrating air cooling and compression refrigeration and control method |
| CN105737436B (en) * | 2016-02-26 | 2024-01-05 | 孙业国 | Air cooling and compression refrigeration combined water chilling unit and control method |
| CN107062688A (en) * | 2017-01-20 | 2017-08-18 | 合肥天鹅制冷科技有限公司 | The cold liquid machine of wide temperature air cooling island |
| CN107062688B (en) * | 2017-01-20 | 2023-08-11 | 合肥天鹅制冷科技有限公司 | Wide Wen Kongleng island type liquid cooler |
| CN108377628A (en) * | 2018-01-26 | 2018-08-07 | 青岛海尔空调电子有限公司 | A kind of control method and device of the radiator fan of handpiece Water Chilling Units power control cabinet |
| CN108377628B (en) * | 2018-01-26 | 2020-07-07 | 青岛海尔空调电子有限公司 | Control method and device for cooling fan of water chilling unit electric control cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Beijing Gold Multitude (GMTD) Air Conditioning Refrigeration Facilities Co., Ltd Document name: Notification to Pay the Fees |
|
| DD01 | Delivery of document by public notice |
Addressee: Beijing Gold Multitude (GMTD) Air Conditioning Refrigeration Facilities Co., Ltd Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20140125 |