CN105571027B - Water chilling unit and control method thereof - Google Patents
Water chilling unit and control method thereof Download PDFInfo
- Publication number
- CN105571027B CN105571027B CN201610035465.XA CN201610035465A CN105571027B CN 105571027 B CN105571027 B CN 105571027B CN 201610035465 A CN201610035465 A CN 201610035465A CN 105571027 B CN105571027 B CN 105571027B
- Authority
- CN
- China
- Prior art keywords
- compressor
- evaporative condenser
- control method
- water cooler
- evaporative
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000003507 refrigerant Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 238000009833 condensation Methods 0.000 abstract description 16
- 230000005494 condensation Effects 0.000 abstract description 16
- 238000001704 evaporation Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010016326 Feeling cold Diseases 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0035—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using evaporation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Atmospheric Sciences (AREA)
- Sustainable Development (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a water chilling unit and a control method thereof. The control method of the water chilling unit comprises the following steps: step S1: determining an actual operating load of the compressor; step S2: and comparing the actual operation load with a preset threshold value, and starting or closing one or more groups of evaporative condensers according to the comparison result. According to the control method of the water chilling unit, the problem that the working performance of the water chilling unit is reduced due to the fact that the actual operation load of the compressor is not matched with the condensation load of the evaporative condenser in the prior art can be solved.
Description
Technical field
The present invention relates to air-conditioning technical fields, in particular to a kind of water cooler and its control method.
Background technique
Evaporate it is cold between air-cooled between water cooling, be made of heat exchanger, blower, cooling water pump, cool water shower device,
Working principle is: after the high pressure superheater refrigerant gas of compressor discharge enters evaporative condenser, passing through the cooling water of circulation
One layer of uniform moisture film is formed in heat exchanger surface with spray equipment, cooling moisture film absorbs the heat in refrigerant, and evaporation is formed
Vapor is arranged by blower to ambient air, realizes condensation process.
But it in the actual working process, often will appear the condensation of the actual motion load and evaporative condenser of compressor
The unmatched problem of load, so that the working performance of water cooler reduces.
Summary of the invention
A kind of water cooler and its control method are provided in the embodiment of the present invention, to solve the reality of compressor in the prior art
The condensation load of border operating load and evaporative condenser mismatches so that the problem of working performance of water cooler reduces.
In order to solve the above technical problems, according to an aspect of the invention, there is provided a kind of water cooler, including successively set
Compressor, evaporative condenser component and the evaporator set, evaporative condenser component include multiple evaporative condensers being arranged in parallel, each
The control valve for controlling the parallel branch on-off is provided in parallel branch where evaporative condenser.
Preferably, being sequentially connected in series on pipeline between evaporative condenser component and evaporator along the flow direction of refrigerant
Ball valve, device for drying and filtering and throttling set.
According to another aspect of the present invention, a kind of control method of above-mentioned water cooler is provided, comprising: step S1:
Determine the actual motion load of compressor；Step S2: actual motion load is compared with preset threshold, according to comparing result
It is turned on or off one or more groups of evaporative condensers.
Preferably, step S1 includes: the high-pressure for detecting exhaust outlet of compressor；Detect the low pressure of compressor air suction mouth
Pressure；Detect the running current of compressor；Compressor is determined according to the high-pressure, low pressure and running current that detect
Actual motion load.
Preferably, step S2 includes: to open an evaporative condenser as Q≤Q1；As Q1 < Q≤Q2, two are opened
A evaporative condenser；As Q2 < Q, three or more evaporative condensers are opened.
Preferably, control method further include: step S3: detecting the high-pressure of exhaust outlet of compressor；Step S4: will be high
Pressure pressure is compared with preset threshold, and increases or close one or more groups of evaporative condensers according to comparison result.
Preferably, step S4 includes: to close one group of evaporative condenser as Ph≤P1；As P1 < Ph≤P2, keep
Current evaporative condenser state；As Ph > P2, increases and open one group of evaporative condenser；Return step S1.
Preferably, before step S1 further include: open compressor, open one group of evaporative condenser；When compressor is stablized
After operation, is increased according to water temperature and open evaporative condenser or closing evaporative condenser.
Preferably, compressor is adjustable capacity helical-lobe compressor.
Preferably, Q1=50%, Q1 < Q2 < 100%.
The control method of water cooler according to the present invention, comprising: step S1: the actual motion load of compressor is determined；
Step S2: actual motion load is compared with preset threshold, one or more groups of steamings are turned on or off according to comparing result
Feel cold condenser.When the water cooler works, the number of the evaporative condenser in work can be adjusted according to the operating load of compressor
Amount, so that condensation load and compressor load reach best match, the power consumption that can reduce blower and cooling water pump is put into, and is improved
The working performance of water cooler.
Detailed description of the invention
Fig. 1 is the cross-sectional view of multi-functional group of bond structure of the embodiment of the present invention；
Fig. 2 is the sectional view along A-A according to the multi-functional group of bond structure of Fig. 1.
Description of symbols: 1, compressor；2, evaporator；3, evaporative condenser；4, control valve；5, ball valve；6, dried
Filter；7, throttling set；8, oil eliminator.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
It please refers to shown in Fig. 1, according to an embodiment of the invention, water cooler, which is characterized in that including the pressure set gradually
Contracting machine 1, evaporative condenser component and evaporator 2, evaporative condenser component include multiple evaporative condensers 3, Mei Gezheng being arranged in parallel
The control valve 4 for controlling the parallel branch on-off is provided in the parallel branch where condenser 3 of feeling cold.
By controlling the on-off of control valve 4, the number for participating in the evaporative condenser 3 of evaporative condenser can control, to make
The operating load for obtaining the condensation load and compressor 1 of evaporative condenser 3 matches, and improves the working performance of water cooler.
Flow direction on pipeline between evaporative condenser component and evaporator 2 along refrigerant has been sequentially connected in series ball valve 5, has done
Dry filter 6 and throttling set 7.Throttling set 7 is, for example, electric expansion valve.
Preferably, compressor 1 is adjustable capacity helical-lobe compressor, easily facilitates the essence realized to compressor operating load
It really adjusts, the operating load of compressor is preferably matched with the condensation load of evaporative condenser 3.
Evaporator 2 is, for example, shell and tube evaporator.
Control valve 4 is, for example, solenoid valve.
Oil eliminator 8 is additionally provided between compressor 1 and evaporative condenser component.
In conjunction with shown in Figure 2, the present invention also provides a kind of control methods of above-mentioned water cooler, comprising: step
S1: the actual motion load of compressor 1 is determined；Step S2: actual motion load is compared with preset threshold, according to comparison
As a result one or more groups of evaporative condensers 3 are turned on or off.
When the water cooler works, the number of the evaporative condenser 3 in work can be adjusted according to the operating load of compressor 1
Amount, so that condensation load and 1 load of compressor reach best match, the power consumption that can reduce blower and cooling water pump is put into, and is mentioned
The working performance of high water cooler.
Step S1 includes: the high-pressure for detecting 1 exhaust outlet of compressor；Detect the low pressure of 1 air entry of compressor；Inspection
The running current of measured compressed machine 1；The reality of compressor 1 is determined according to the high-pressure, low pressure and running current that detect
Operating load.
After determining the high-pressure Ph of the exhaust ports of compressor 1, so that it may according to determining pair of high-pressure Ph
The condensation temperature Tc answered, likewise, after low pressure Pl at the air entry for determining compressor 1, so that it may according to the low pressure
Pressure Pl determines corresponding evaporating temperature To, later can be according to the fortune of condensation temperature Tc, evaporating temperature To and compressor 1
Row electric current I calculates compressor actual motion load Q, i.e. Q=fTo, Tc, I, puts into entire system according to the value comprehensive descision of Q and Ph
The evaporative condenser quantity of cooling system, input quantity can be realized by the control valve 4 in control respective branch.
According to the specific steps that operation quantity of the compressor operating load to evaporative condenser is controlled include: when Q≤
When Q1, an evaporative condenser 3 is opened；As Q1 < Q≤Q2, two evaporative condensers 3 are opened；As Q2 < Q, three are opened
The above evaporative condenser 3.Preferably, Q1=50%, Q1 < Q2 < 100%.Wherein Q1 and Q2 is compressor operating load
Preset threshold.Certainly, the unlatching quantity of actual evaporation condenser 3 or closing quantity need to be run according to measured compressor
The quantity of load and the evaporative condenser 3 actually opened is adjusted, and opening one group of evaporative condenser 3 every time is not certainty
Requirement.
Certainly, the value of above-mentioned Q1 and Q2 can be adjusted according to the actual situation, and it is negative that more operations can also be arranged
Lotus threshold value, such as third threshold value Q3 etc. is set between Q2 and 100%, so as to more accurately according to water cooler
Operating load the operation quantity of evaporative condenser 3 is adjusted, realize evaporative condenser and condenser/evaporator condensation load
Between best match.
It, can be effectively by reasonably setting the relationship between compressor operating load and evaporative condenser operation quantity
Guarantee that the condensation load of compressor operating load and evaporative condenser matches, guarantees the operational energy efficiency of entire water cooler.
In order to further improve the working performance of entire water chiller, this also needs to control high-pressure Ph
System, so that high-pressure is within Ph preset range, to guarantee between evaporative condenser and water chiller actual motion state
Best match may be implemented.
It include: step S3 by detecting the method that high-pressure controls the quantity of evaporative condenser 3: detection compression
The high-pressure Ph of 1 exhaust outlet of machine；Step S4: high-pressure Ph is compared with preset threshold, and is increased according to comparison result
Add or close one or more groups of evaporative condensers 3.Carrying out control to the quantity of evaporative condenser 3 by detection high-pressure is
It is carried out on the basis of after by compressor operating load and evaporative condenser quantity Matching, in order to realize in high pressure
Pressure is within safe range, guarantees that compressor operating load matches with evaporative condenser quantity, namely is guaranteeing cold water
On the basis of unit safety operation, the matching of compressor operating load and evaporative condenser condensation load is realized.
The step of being controlled according to quantity of the high-pressure to evaporative condenser 3 specifically includes: as Ph≤P1, closing
One group of evaporative condenser 3；As P1 < Ph≤P2, current 3 state of evaporative condenser is kept；As Ph > P2, increases and open one group
Evaporative condenser 3, later return step S1.Wherein P1 and P2 is the preset threshold of high-pressure.By repeatedly according to high pressure
The mode that the working quantity of condenser/evaporator is adjusted in pressure and compressor operating load finally can meet high pressure pressure
In power control range, the matching of compressor operating load and evaporative condenser condensation load is realized, so that the operation of water cooler
Reach optimum state.
Preferably, before step S1 further include: open compressor 1, open one group of evaporative condenser 3；When compressor 1 is stablized
After operation, is increased according to water temperature and open evaporative condenser 3 or closing evaporative condenser 3.When water cooler just brings into operation,
One group of evaporative condenser 3 is only opened, may be implemented the low-pressure opening of compressor, guarantees that compressor in the initial state can be compared with
Well with the condensation load matched well of evaporative condenser.After compressor stable operation, so that it may according to the reality of compressor
Border operation conditions accordingly adjusts the operation quantity of evaporative condenser 3, is further ensured that compressor operating load and evaporation
Matching between the condensation load of condenser 3.
It certainly, is the preferred embodiment of the present invention above.It should be pointed out that for those skilled in the art
For, without departing from the basic principles of the invention, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of control method of water cooler, which is characterized in that the water cooler include the compressor (1) set gradually,
Evaporative condenser component and evaporator (2), the evaporative condenser component include multiple evaporative condensers (3) being arranged in parallel, each
The control valve (4) for controlling the parallel branch on-off is provided in parallel branch where evaporative condenser (3)；
The control method includes:
Step S1: the actual motion load of compressor is determined；
Step S2: actual motion load is compared with preset threshold, is turned on or off one group or more according to comparing result
Group evaporative condenser；
The step S1 includes:
Detect the high-pressure of exhaust outlet of compressor；
Detect the low pressure of compressor air suction mouth；
Detect the running current of compressor；
The actual motion load of compressor is determined according to the high-pressure, low pressure and running current that detect.
2. the control method of water cooler according to claim 1, which is characterized in that the evaporative condenser component and described
Ball valve (5), device for drying and filtering (6) and throttling have been sequentially connected in series along the flow direction of refrigerant on pipeline between evaporator (2)
Device (7).
3. the control method of water cooler according to claim 1, which is characterized in that the step S2 includes:
As Q≤Q1, an evaporative condenser is opened；
As Q1 < Q≤Q2, two evaporative condensers are opened；
As Q2 < Q, three or more evaporative condensers are opened.
4. the control method of water cooler according to claim 3, which is characterized in that the control method further include:
Step S3: the high-pressure of exhaust outlet of compressor is detected；
Step S4: high-pressure is compared with preset threshold, and is increased or closed one or more groups of according to comparison result
Evaporative condenser.
5. the control method of water cooler according to claim 4, which is characterized in that the step S4 includes:
As Ph≤P1, one group of evaporative condenser is closed；
As P1 < Ph≤P2, current evaporative condenser state is kept；
As Ph > P2, increases and open one group of evaporative condenser；
Return step S1.
6. the control method of water cooler according to claim 1, which is characterized in that before the step S1 further include:
Compressor is opened, one group of evaporative condenser is opened；
After compressor stable operation, is increased according to water temperature and open evaporative condenser or closing evaporative condenser.
7. the control method of water cooler according to claim 1, which is characterized in that compressor is adjustable capacity screw rod
Compressor.
8. the control method of water cooler according to claim 3, which is characterized in that Q1=50%, Q1 < Q2 <
100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035465.XA CN105571027B (en) | 2016-01-19 | 2016-01-19 | Water chilling unit and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035465.XA CN105571027B (en) | 2016-01-19 | 2016-01-19 | Water chilling unit and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105571027A CN105571027A (en) | 2016-05-11 |
| CN105571027B true CN105571027B (en) | 2018-12-25 |
Family
ID=55881454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610035465.XA Active CN105571027B (en) | 2016-01-19 | 2016-01-19 | Water chilling unit and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105571027B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488969A (en) * | 2018-03-23 | 2018-09-04 | 北京百度网讯科技有限公司 | Control method and control device for handpiece Water Chilling Units |
| CN111964189A (en) * | 2020-08-26 | 2020-11-20 | 广东美的暖通设备有限公司 | Control method and device of water chiller, water chiller and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263350A (en) * | 2005-09-15 | 2008-09-10 | 开利公司 | Refrigerant dehumidification system with variable condenser unloading |
| CN102003822A (en) * | 2010-12-15 | 2011-04-06 | 广州恒星冷冻机械制造有限公司 | Air-cooling cold water unit and control method thereof |
| CN102628630A (en) * | 2012-03-15 | 2012-08-08 | 青岛海尔空调电子有限公司 | Control method of air-cooling water chiller unit |
| CN104089347A (en) * | 2014-06-24 | 2014-10-08 | 广东申菱空调设备有限公司 | Low-temperature air-cooled water chiller unit and control method thereof |
| CN104456856A (en) * | 2014-12-23 | 2015-03-25 | 珠海格力电器股份有限公司 | Control method and control device for water-cooling air cooler |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5902053B2 (en) * | 2012-06-28 | 2016-04-13 | 株式会社日立製作所 | Cooling system and cooling method |
-
2016
- 2016-01-19 CN CN201610035465.XA patent/CN105571027B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101263350A (en) * | 2005-09-15 | 2008-09-10 | 开利公司 | Refrigerant dehumidification system with variable condenser unloading |
| CN102003822A (en) * | 2010-12-15 | 2011-04-06 | 广州恒星冷冻机械制造有限公司 | Air-cooling cold water unit and control method thereof |
| CN102628630A (en) * | 2012-03-15 | 2012-08-08 | 青岛海尔空调电子有限公司 | Control method of air-cooling water chiller unit |
| CN104089347A (en) * | 2014-06-24 | 2014-10-08 | 广东申菱空调设备有限公司 | Low-temperature air-cooled water chiller unit and control method thereof |
| CN104456856A (en) * | 2014-12-23 | 2015-03-25 | 珠海格力电器股份有限公司 | Control method and control device for water-cooling air cooler |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105571027A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109539762B (en) | Composite open-close type circulating heat pump drying system | |
| CN107120793B (en) | Variable frequency air conditioner and condensation prevention control method for variable frequency module radiator thereof | |
| KR101409854B1 (en) | Heat pump type cool and hot-air drying machine | |
| KR101224157B1 (en) | Heatpump type dehumidifier apparatus | |
| EP2881684B1 (en) | Container refrigeration device | |
| Roh et al. | Comparison of the heating performance of an inverter-driven heat pump system using R410A vapor-injection into accumulator and compressor | |
| US20190011148A1 (en) | Refrigeration cycle apparatus | |
| US11927376B2 (en) | Refrigeration cycle apparatus | |
| KR20180017536A (en) | Multi-type heat pump system with constant temperature and humidity | |
| CN105240962A (en) | Water-cooled temperature-adjusting dehumidifier wide in air temperature range | |
| KR20180019041A (en) | Multi heat pump Refrigeration system | |
| CN108343600A (en) | A kind of performance test bed and application method for compressor | |
| CN105571027B (en) | Water chilling unit and control method thereof | |
| CN208832629U (en) | A kind of low-temperature cold water unit | |
| KR20150117529A (en) | Heat pump type drying apparatus | |
| KR20100120323A (en) | Chiller system | |
| JP2012112648A (en) | Refrigeration cycle device | |
| CN110686428A (en) | Refrigerant circulation system, air conditioning unit and control method of refrigerant circulation system | |
| EP2551402A1 (en) | A heat pump system for a laundry dryer | |
| CN100578114C (en) | Freezing device | |
| CN108954909A (en) | Heat pump system and oil cooling circulation control method thereof | |
| CN110726187A (en) | Refrigerating device with low-temperature refrigeration and dehumidification functions | |
| CN211823237U (en) | Refrigeration cycle system and refrigeration equipment with same | |
| CN112327975B (en) | Control method of efficient multistage drying system | |
| CN104941707B (en) | A kind of refrigeration system applied to constant temperature humidity chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |