CN107289559A - Water chilling unit energy adjusting structure, energy adjusting method and water chilling unit - Google Patents
Water chilling unit energy adjusting structure, energy adjusting method and water chilling unit Download PDFInfo
- Publication number
- CN107289559A CN107289559A CN201710545315.8A CN201710545315A CN107289559A CN 107289559 A CN107289559 A CN 107289559A CN 201710545315 A CN201710545315 A CN 201710545315A CN 107289559 A CN107289559 A CN 107289559A
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- Prior art keywords
- compressor
- water chilling
- chilling units
- handpiece water
- air return
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 88
- 239000003507 refrigerant Substances 0.000 claims abstract description 55
- 238000001816 cooling Methods 0.000 claims abstract description 54
- 238000002347 injection Methods 0.000 claims description 44
- 239000007924 injection Substances 0.000 claims description 44
- 230000003750 conditioning effect Effects 0.000 claims description 27
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 5
- 238000010025 steaming Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract description 5
- 239000000498 cooling water Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 abstract 5
- 239000002826 coolant Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction 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
- F24F5/001—Compression cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a water chilling unit energy adjusting structure, an energy adjusting method and a water chilling unit. This cooling water set energy regulation structure includes: the liquid spraying cooling device comprises a gas bypass pipeline and a liquid spraying cooling pipeline, wherein the gas bypass pipeline is used for enabling part of high-temperature gaseous refrigerant discharged from the exhaust end of the compressor to return to the gas return end of the compressor through the gas bypass pipeline; the liquid spraying cooling pipeline is used for cooling the liquid refrigerant discharged from the liquid discharging end of the condenser through the liquid spraying cooling pipeline and then spraying the liquid refrigerant to the air return end of the compressor. Therefore, in the running process of the water chilling unit, the water chilling unit is ensured to have a wider adjusting range, meanwhile, the exhaust temperature of the compressor is ensured to be kept in a normal temperature range, and the problem that the exhaust temperature of the compressor is higher due to the fact that the exhaust end of the compressor is directly bypassed to the air return end of the compressor to meet the requirement of wide-range running of the water chilling unit in the prior art is solved.
Description
Technical field
The present invention relates to handpiece Water Chilling Units field, in particular to a kind of handpiece Water Chilling Units energy conditioning structure, energy adjustment
Method and handpiece Water Chilling Units.
Background technology
At present, screw-type water chiller peculiar to vessel carries out energy adjustment operation by the movement of helical-lobe compressor slide-valve gear, its
Energy-conditioning range about 20%~100%.With the raising of customer demand, it is desirable to which handpiece Water Chilling Units range of operation is wider, at this moment
Compressor is asked to be unloaded to the operation of more capabilities in itself technically more difficult.
Energy adjustment is carried out to handpiece Water Chilling Units using hot-gas bypass mode in the prior art, screw-type water chiller peculiar to vessel is
Prevent inclination from waving, use dry evaporator more evaporator, the mode of its hot-gas bypass there are two kinds：Compressor is directly bypassed to return
Gas end and it is bypassed to evaporator inlet.
However, high temperature hot gas, which is bypassed to evaporator inlet, can form biphase gas and liquid flow, dry evaporator feed liquor point is exacerbated
Liquid is uneven, and then causes suction temperature fluctuation greatly, and electronic expansion valve opening is fluctuated therewith, so as to ultimately result in vapor pres- sure Reeb
It is dynamic.Meanwhile, high temperature hot gas, which is directly bypassed to compressor return air end, to cause exhaust high temperature to protect, and compressor is in high temperature for a long time
Lower operation can reduce its life and reliability.
The content of the invention
It is a primary object of the present invention to provide a kind of handpiece Water Chilling Units energy conditioning structure, energy adjustment method and cold water
Unit, at least to solve the hot-gas bypass mode of handpiece Water Chilling Units of the prior art, to be easily caused compressor exhaust temperature too high
Problem.
To achieve these goals, according to an aspect of the invention, there is provided a kind of handpiece Water Chilling Units energy conditioning structure,
Including：Gas bypass line, one end of gas bypass line is connected with the exhaust end of the compressor of handpiece Water Chilling Units, gas bypass line it is another
One end is connected with the air return end of compressor, so that the part high-temperature gas refrigerant of the exhaust end discharge of compressor passes through gas bypass pipe
Road is back to the air return end of compressor；The row of Liquid injection cooling pipeline, one end of Liquid injection cooling pipeline and the condenser of handpiece Water Chilling Units
Liquid end is connected, and the other end of Liquid injection cooling pipeline is connected with the air return end of compressor, so as to discharged by the drain side of condenser
Liquid refrigerants is sprayed to the air return end of compressor after cooling through Liquid injection cooling pipeline.
Further, the first control valve is provided with gas bypass line, to control the break-make of gas bypass line.
Further, handpiece Water Chilling Units energy conditioning structure also includes：First temperature sensor, is arranged on the steaming of handpiece Water Chilling Units
Send out the water side of device, the leaving water temperature of the water side for monitoring evaporator；Wherein, the first temperature sensor by controller with
First control valve is connected, and controller is used to be more than scheduled rate in the fall off rate of the leaving water temperature of the water side of evaporator
When, the first control valve of control opens gas bypass line.
Further, hydrojet choke valve is provided with Liquid injection cooling pipeline, hydrojet choke valve is used for the row by condenser
The liquid refrigerants of liquid end discharge is cooled.
Further, the second control valve is additionally provided with Liquid injection cooling pipeline, to control the break-make of Liquid injection cooling pipeline.
Further, handpiece Water Chilling Units energy conditioning structure also includes：Second temperature sensor, is arranged on the exhaust of compressor
End, the delivery temperature of the exhaust end for monitoring compressor；Wherein, second temperature sensor passes through controller and the second regulating valve
Door connection, controller is used for when the delivery temperature of the exhaust end of compressor is higher than preset temperature, and the second control valve of control is beaten
Open Liquid injection cooling pipeline.
According to the second aspect of the invention there is provided a kind of handpiece Water Chilling Units, including compressor, condenser, evaporator with
And handpiece Water Chilling Units energy conditioning structure, handpiece Water Chilling Units energy conditioning structure is the handpiece Water Chilling Units energy conditioning structure of the above.
There is provided a kind of handpiece Water Chilling Units energy adjustment method according to the third aspect of the present invention, it is adaptable to the above
Handpiece Water Chilling Units energy conditioning structure, handpiece Water Chilling Units energy adjustment method includes：Control the exhaust end of the compressor of handpiece Water Chilling Units
Connected with the air return end of compressor so that the part high-temperature gas refrigerant of the exhaust end discharge of compressor returns to the return-air of compressor
End；The connection of the drain side of the condenser of handpiece Water Chilling Units and the air return end of compressor is controlled, so as to be arranged by the drain side of condenser
The liquid refrigerants gone out is sprayed to the air return end of compressor.
Further, connected in the exhaust end of compressor of control handpiece Water Chilling Units with the air return end of compressor so that compressor
Exhaust end discharge part high-temperature gas refrigerant return to the air return end of compressor before, handpiece Water Chilling Units energy adjustment method is also wrapped
Include：Detect the leaving water temperature of the water side of the evaporator of handpiece Water Chilling Units；The load deviation of compressor is calculated according to leaving water temperature；When
The actual load of compressor≤【A】And load deviation ＜-【B】When, control the exhaust end of compressor and the air return end of compressor to connect
The part high-temperature gas refrigerant for passing to the exhaust end for making compressor returns to the air return end of compressor；When compressor actual load≤
【A】And load deviation >=-【B】, or, the actual load ＞ of compressor【A】When, control the exhaust end and compressor of compressor
Air return end disconnects；Wherein,【A】For the reference value of compressor actual load ,-【B】For the reference value of load deviation.
Further, in the drain side for controlling the condenser of handpiece Water Chilling Units and the connection of the air return end of compressor, so that by
The liquid refrigerants of the drain side discharge of condenser is sprayed to before the air return end of compressor, and handpiece Water Chilling Units energy adjustment method is also wrapped
Include：Detect the delivery temperature of the exhaust end of compressor；Compare delivery temperature and the size of preset temperature；Wherein, cooling-water machine is controlled
The drain side of the condenser of group and the connection of the air return end of compressor, so that the liquid refrigerants discharged by the drain side of condenser sprays
Being incident upon the air return end of compressor includes：When delivery temperature is more than preset temperature, the drain side of the condenser of handpiece Water Chilling Units is controlled
With the connection of the air return end of compressor so that by condenser drain side discharge liquid refrigerants spray to the return-air of compressor
End.
Further, when delivery temperature >=【C】DEG C when, control handpiece Water Chilling Units condenser drain side and compressor return
The connection at gas end；When【C】DEG C ＞ delivery temperatures ＞【D】DEG C when, control drain side and the compressor of the condenser of handpiece Water Chilling Units
The on off operating mode of air return end maintains the original state；As delivery temperature ＜【D】When, control drain side and the compression of the condenser of handpiece Water Chilling Units
The air return end of machine disconnects；Wherein,【C】For the high temperature threshold value of compressor operating,【D】For the normal temperature of compressor operating.
Further, in the drain side for controlling the condenser of handpiece Water Chilling Units and the connection of the air return end of compressor, so that by
The liquid refrigerants of the drain side discharge of condenser is sprayed to before the air return end of compressor, and handpiece Water Chilling Units energy adjustment method is also wrapped
Include：Cool to being discharged by the drain side of condenser and being sprayed to the liquid refrigerants of the air return end of compressor.
Using the handpiece Water Chilling Units energy conditioning structure of technical solution of the present invention, including：Gas bypass line and Liquid injection cooling pipe
Road, one end of gas bypass line is connected with the exhaust end of the compressor of handpiece Water Chilling Units, the other end and compressor of gas bypass line
Air return end connection so that compressor exhaust end discharge part high-temperature gas refrigerant compression is back to by gas bypass line
The air return end of machine；One end of Liquid injection cooling pipeline is connected with the drain side of the condenser of handpiece Water Chilling Units, Liquid injection cooling pipeline it is another
One end is connected with the air return end of compressor, so that the liquid refrigerants discharged by the drain side of condenser cools through Liquid injection cooling pipeline
Spray afterwards to the air return end of compressor.So as in handpiece Water Chilling Units running, ensureing that handpiece Water Chilling Units have broader regulation
While scope, it is ensured that the delivery temperature of compressor is maintained in normal temperature range, it is to meet cold in the prior art to solve
The requirement of water dispenser group wide scope operation and the directly air return end that bypasses the exhaust end of compressor to compressor causes compressor to be arranged
The problem of temperature degree is higher.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description of the drawings
The Figure of description for constituting the part of the present invention is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is optional arrangement of the handpiece Water Chilling Units energy conditioning structure in handpiece Water Chilling Units according to embodiments of the present invention
Schematic diagram；
Fig. 2 is one of control structure frame of optional handpiece Water Chilling Units energy conditioning structure according to embodiments of the present invention
Figure；And
Fig. 3 is another control structure block diagram of optional handpiece Water Chilling Units energy conditioning structure according to embodiments of the present invention.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, gas bypass line；20th, compressor；30th, Liquid injection cooling pipeline；40th, condenser；50th, the first control valve；60、
First temperature sensor；70th, evaporator；80th, controller；90th, hydrojet choke valve；100th, the second control valve；110th, the second temperature
Spend sensor.
Embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model that the present invention is protected
Enclose.
Handpiece Water Chilling Units energy conditioning structure according to embodiments of the present invention, as shown in figure 1, including：The He of gas bypass line 10
Liquid injection cooling pipeline 30, one end of gas bypass line 10 is connected with the exhaust end of the compressor 20 of handpiece Water Chilling Units, gas bypass line
10 other end is connected with the air return end of compressor 20, so that the part high-temperature gas refrigerant of the exhaust end discharge of compressor 20 leads to
Cross the air return end that gas bypass line 10 is back to compressor 20；One end of Liquid injection cooling pipeline 30 and the condenser 40 of handpiece Water Chilling Units
Drain side connection, the other end of Liquid injection cooling pipeline 30 is connected with the air return end of compressor 20, so that by the row of condenser 40
The liquid refrigerants of liquid end discharge is sprayed to the air return end of compressor 20 after cooling through Liquid injection cooling pipeline 30.
Using the handpiece Water Chilling Units energy conditioning structure of the present embodiment of the present invention, including：Gas bypass line 10 and Liquid injection cooling
Pipeline 30, one end of gas bypass line 10 is connected with the exhaust end of the compressor 20 of handpiece Water Chilling Units, gas bypass line 10 it is another
End is connected with the air return end of compressor 20, so that the part high-temperature gas refrigerant of the exhaust end discharge of compressor 20 is bypassed by gas
Pipeline 10 is back to the air return end of compressor 20；One end of Liquid injection cooling pipeline 30 and the drain side of the condenser 40 of handpiece Water Chilling Units
Connection, the other end of Liquid injection cooling pipeline 30 is connected with the air return end of compressor 20, so as to be discharged by the drain side of condenser 40
Liquid refrigerants through Liquid injection cooling pipeline 30 cool after spray to the air return end of compressor 20.So as in handpiece Water Chilling Units running
In, while ensureing that handpiece Water Chilling Units have broader adjustable range, it is ensured that the delivery temperature of compressor 20 is maintained at positive normal temperature
In the range of degree, solve in the prior art for meet the requirement of handpiece Water Chilling Units wide scope operation and directly by the exhaust of compressor 20
End bypass to the air return end of compressor 20 causes the problem of delivery temperature of compressor 20 is higher.
When it is implemented, in order to be exported according to the energy of handpiece Water Chilling Units leaving water temperature flexible modulation handpiece Water Chilling Units, gas
The first control valve 50 is provided with bypass line 10, gas bypass line 10 is used for the break-make for controlling gas bypass line 10；Cold
The water side of the evaporator 70 of water dispenser group sets the first temperature sensor 60, and the first temperature sensor 60 is used to monitor evaporator 70
Water side leaving water temperature.As shown in Fig. 2 the first temperature sensor 60 is connected by controller 80 with the first control valve 50
Connect, when the fall off rate of the leaving water temperature of the water side of evaporator 70 is more than scheduled rate, that is, represent the refrigerant of handpiece Water Chilling Units
Internal circulating load is larger, and the energy output of compressor 20 is larger, now, and controller 80 controls the first control valve 50 by gas bypass line
10 open, and the part gaseous coolant for discharging the exhaust end of compressor 20 returns to the air return end of compressor 20, reduce and enter
The coolant quantity of condenser 40 and evaporator 70, to make the refrigerant circulation of whole handpiece Water Chilling Units reduce, so that evaporator 70 goes out
Water end (W.E.) temperature is maintained at suitable temperature, so that when solving compressor 20 and being unloaded to minimum load, the leaving water temperature of evaporator 70
Still relatively low the problem of, expand the energy-conditioning range of handpiece Water Chilling Units.
And the air return end that the gaseous coolant of the exhaust end of compressor 20 is returned into compressor 20 can cause compressor 20
Excessive discharge temperature, causes exhaust high temperature to be protected, while influenceing reliability and the life-span of compressor.To solve this problem, pass through
Injection is extremely pressed after Liquid injection cooling pipeline 30 cools the liquid refrigerants that the drain side of condenser 40 is discharged through Liquid injection cooling pipeline 30
The air return end of contracting machine 20, the problem of can effectively solve the problem that 20 temperature overheating of compressor.
Specifically, hydrojet choke valve 90 is provided with Liquid injection cooling pipeline 30, hydrojet choke valve 90 is used for by condenser
The liquid refrigerants of 40 drain side discharge carries out throttling cooling, and the liquid refrigerants for the cooling that throttles is sprayed into returning to compressor 20
Gas end, thus effectively the temperature overheating of control compressor 20 the problem of, it is ensured that the longtime running at low load of compressor 20.
In order to realize the second tune is additionally provided with the control to the course of work of Liquid injection cooling pipeline 30, Liquid injection cooling pipeline 30
Valve 100 is saved, the break-make of the second control valve 100 control Liquid injection cooling pipeline 30 is so as to control the drain side of condenser 40 to discharge
Air return end from liquid refrigerants to compressor 20 injection unlatching and stopping.
In order to be controlled whether to come to the injection of its air return end according to the delivery temperature of compressor 20 in the course of the work
The liquid refrigerants of condenser 40, second temperature sensor 110, second temperature sensor 110 are set in the exhaust end of compressor 20
For the delivery temperature for the exhaust end for monitoring compressor 20；Wherein, as shown in figure 3, second temperature sensor 110 passes through controller
80 are connected with the second control valve 100, and controller 80 is used to be higher than preset temperature in the delivery temperature of the exhaust end of compressor 20
When, the second control valve 100 of control is opened Liquid injection cooling pipeline 30 and is ejected through with the exhaust end to compressor 20 after cooling
Liquid refrigerants.Preset temperature is the too high critical point of temperature in the course of work of compressor 20.
In the present embodiment, handpiece Water Chilling Units are mainly by compressor 20, condenser 40, evaporator 70, electric expansion valve, electromagnetism
The parts such as valve, ball valve, device for drying and filtering are constituted, wherein, compressor 20 is semi-enclosed helical-lobe compressor, and condenser 40 is full liquid
Formula condenser, evaporator 70 is dry evaporator.
In addition it also add and be provided with the first regulation on gas bypass line 10 and Liquid injection cooling pipeline 30, gas bypass line 10
Valve 50, the first control valve 50 is gas bypass solenoid valve；The second control valve 100 is provided with Liquid injection cooling pipeline 30, the
Two control valves 100 are hydrojet magnetic valve.Liquid injection cooling hot gas is directly bypassed to the control thinking of the air return end of compressor 20 such as
Under：
When compressor 20 actual load≤【A】And load deviation ＜-【B】When, the first control valve 50 is opened；
When compressor 20 actual load≤【A】And load deviation >=-【B】When, the first control valve 50 is closed；
As the actual load ＞ of compressor 20【A】When, the first control valve 50 is closed.
Wherein,【A】For the reference value of the actual load of compressor 20 ,-【B】For the reference value of load deviation.
In practical operation, the actual load of compressor 20 is determined according to the position of the guiding valve in compressor 20, load
Deviation is equal to the difference of target leaving water temperature and actual leaving water temperature.
After compressor 20 is opened：When delivery temperature >=【C】DEG C when, the second control valve 100 is opened；When【C】DEG C ＞ exhaust
Temperature ＞【D】DEG C when, the second control valve 100 maintains the original state；When【D】During >=delivery temperature, the second control valve 100 is closed.
Wherein,【C】The high temperature threshold value worked for compressor 20,【D】The normal temperature worked for compressor 20.
According to second embodiment of the present invention, there is provided a kind of handpiece Water Chilling Units, including compressor 20, condenser 40, steaming
Device 70 and handpiece Water Chilling Units energy conditioning structure are sent out, handpiece Water Chilling Units energy conditioning structure is the handpiece Water Chilling Units energy of above-described embodiment
Adjustment structure.Using the handpiece Water Chilling Units of the handpiece Water Chilling Units energy conditioning structure of above-described embodiment, in the process of running, it is ensured that cold water
While unit has broader adjustable range, it is ensured that the delivery temperature of compressor 20 is maintained in normal temperature range, solve
Directly the exhaust end of compressor 20 is bypassed to compression to meet the requirement of handpiece Water Chilling Units wide scopes operation in the prior art
The air return end of machine 20 causes the problem of delivery temperature of compressor 20 is higher.
According to the 3rd embodiment of the present invention there is provided a kind of handpiece Water Chilling Units energy adjustment method, the adjusting method is fitted
For the handpiece Water Chilling Units energy conditioning structure of above-described embodiment, handpiece Water Chilling Units energy adjustment method comprises the following steps：
Step S103：The exhaust end of the compressor 20 of handpiece Water Chilling Units is controlled to be connected with the air return end of compressor 20 so as to compress
The part high-temperature gas refrigerant of the exhaust end discharge of machine 20 returns to the air return end of compressor 20；
Step S106：Drain side and the connection of the air return end of compressor 20 of the condenser 40 of handpiece Water Chilling Units are controlled, so that
The liquid refrigerants discharged by the drain side of condenser 40 is sprayed to the air return end of compressor 20.
It is high by the part for discharging the exhaust end of compressor 20 using the handpiece Water Chilling Units energy adjustment method of the present embodiment
Warm gaseous coolant is back to the air return end of compressor 20 by gas bypass line 10, while making what the drain side of condenser 40 was discharged
Liquid refrigerants is sprayed to the air return end of compressor 20 after cooling through Liquid injection cooling pipeline 30.So as in handpiece Water Chilling Units running
In, while ensureing that handpiece Water Chilling Units have broader adjustable range, it is ensured that the delivery temperature of compressor 20 is maintained at positive normal temperature
In the range of degree, solve in the prior art for meet the requirement of handpiece Water Chilling Units wide scope operation and directly by the exhaust of compressor 20
End bypass to the air return end of compressor 20 causes the problem of delivery temperature of compressor 20 is higher.
Specifically, in step S103：The exhaust end of compressor 20 and the air return end of compressor 20 for controlling handpiece Water Chilling Units connect
The part high-temperature gas refrigerant that passing to discharges the exhaust end of compressor 20 is returned before the air return end of compressor 20, the present embodiment
Handpiece Water Chilling Units energy adjustment method also include：
Step S101：Detect the leaving water temperature of the water side of the evaporator 70 of handpiece Water Chilling Units；
Step S102：The load deviation of compressor 20 is calculated according to leaving water temperature；
When compressor 20 actual load≤【A】And load deviation ＜-【B】When, control the exhaust end and pressure of compressor 20
The air return end of contracting machine 20 is connected so that the part high-temperature gas refrigerant of the exhaust end of compressor 20 returns to the air return end of compressor 20；
When compressor 20 actual load≤【A】And load deviation >=-【B】, or, the actual load ＞ of compressor 20
【A】When, control the exhaust end of compressor 20 to be disconnected with the air return end of compressor 20；
Wherein,【A】For the reference value of the actual load of compressor 20 ,-【B】For the reference value of load deviation.
In practical operation, the actual load of compressor 20 is determined according to the position of the guiding valve in compressor 20, load
Deviation is equal to the difference of target leaving water temperature and actual leaving water temperature.
, also can be according to evaporator 70 after the leaving water temperature of water side of evaporator 70 is detected in the present invention is implemented
Water side leaving water temperature fall off rate size control handpiece Water Chilling Units compressor 20 exhaust end and compressor 20
Whether air return end connects.
Specifically, when the fall off rate of leaving water temperature is more than scheduled rate, the row of the compressor 20 of handpiece Water Chilling Units is controlled
Gas end is connected with the air return end of compressor 20 so that the part high-temperature gas refrigerant of the exhaust end of compressor 20 returns to compressor 20
Air return end.
It is compared by the leaving water temperature and the scheduled rate of setting of the water side for the evaporator 70 for comparing handpiece Water Chilling Units,
So as to decide whether the gaseous coolant of the exhaust end of compressor 20 returning to its air return end, it can effectively solve the problem that compressor 20 is unloaded
During to minimum load, the problem of leaving water temperature of evaporator 70 is still relatively low expands the energy-conditioning range of handpiece Water Chilling Units.
Further, in step S106：In the drain side of the condenser 40 of control handpiece Water Chilling Units and the return-air of compressor 20
The connection at end, so that the liquid refrigerants discharged by the drain side of condenser 40 is sprayed to before the air return end of compressor 20, cold water
Unit energy adjustment method also includes：
Step S104：Detect the delivery temperature of the exhaust end of compressor 20；
Step S105：Compare delivery temperature and the size of preset temperature；
Wherein, step S106 is specially：When delivery temperature is more than preset temperature, the condenser 40 of handpiece Water Chilling Units is controlled
Drain side and the connection of the air return end of compressor 20, so that the liquid refrigerants discharged by the drain side of condenser 40 is sprayed to compression
The air return end of machine 20.
Specifically, after compressor 20 is opened：When delivery temperature >=【C】DEG C when, the second control valve 100 is opened；When【C】℃
＞ delivery temperatures ＞【D】DEG C when, the second control valve 100 maintains the original state；When【D】During >=delivery temperature, the second control valve 100
Close.
Wherein,【C】The high temperature threshold value worked for compressor 20,【D】The normal temperature worked for compressor 20.
By the delivery temperature for the exhaust end for detecting compressor 20, and according to delivery temperature and the ratio of the preset temperature of setting
Relatively result, it is determined whether the liquid refrigerants for discharging the drain side of condenser 40 is sprayed to the air return end of compressor 20, Neng Gou
Compressor 20 is cooled when the temperature of compressor 20 is too high, when the delivery temperature of compressor 20 is normal, makes condenser 40
The liquid refrigerants of drain side is fully entered in evaporator 70, it is ensured that the internal circulating load of the refrigerant in handpiece Water Chilling Units running, so that
Ensure the efficiency of handpiece Water Chilling Units work.
Further, the liquid refrigerant temperature discharged by the drain side of condenser 40 is higher, in order to preferably to pressure
Contracting machine 20 is cooled, and is sprayed in the liquid refrigerants for discharging the drain side of condenser 40 to before the air return end of compressor 20,
Also need to discharge the drain side by condenser 40 and spray to the liquid refrigerants of the air return end of compressor 20 to cool.Cooling
Work is carried out by the hydrojet choke valve 90 being arranged on Liquid injection cooling pipeline 30.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (12)
1. a kind of handpiece Water Chilling Units energy conditioning structure, it is characterised in that including：
The exhaust end of gas bypass line (10), one end of the gas bypass line (10) and the compressor (20) of handpiece Water Chilling Units connects
Logical, the other end of the gas bypass line (10) is connected with the air return end of the compressor (20), so that the compressor (20)
Exhaust end discharge part high-temperature gas refrigerant by the gas bypass line (10) be back to the compressor (20) return
Gas end；
Liquid injection cooling pipeline (30), one end of the Liquid injection cooling pipeline (30) and the row of the condenser (40) of the handpiece Water Chilling Units
Liquid end is connected, and the other end of the Liquid injection cooling pipeline (30) is connected with the air return end of the compressor (20), so that by described
The liquid refrigerants of the drain side discharge of condenser (40) is sprayed to the compressor after cooling through the Liquid injection cooling pipeline (30)
(20) air return end.
2. handpiece Water Chilling Units energy conditioning structure according to claim 1, it is characterised in that on the gas bypass line (10)
The first control valve (50) is provided with, to control the break-make of the gas bypass line (10).
3. handpiece Water Chilling Units energy conditioning structure according to claim 2, it is characterised in that the handpiece Water Chilling Units energy adjustment
Structure also includes：
First temperature sensor (60), is arranged on the water side of the evaporator (70) of the handpiece Water Chilling Units, for monitoring the steaming
Send out the leaving water temperature of the water side of device (70)；
Wherein, first temperature sensor (60) is connected by controller (80) with first control valve (50), described
Controller (80) is used for when the fall off rate of the leaving water temperature of the water side of the evaporator (70) is more than scheduled rate, control
First control valve (50) opens the gas bypass line (10).
4. handpiece Water Chilling Units energy conditioning structure according to claim 1, it is characterised in that the Liquid injection cooling pipeline (30)
On be provided with hydrojet choke valve (90), the hydrojet choke valve (90) is used for being discharged by the drain side of the condenser (40)
Liquid refrigerants is cooled.
5. handpiece Water Chilling Units energy conditioning structure according to claim 4, it is characterised in that the Liquid injection cooling pipeline (30)
On be additionally provided with the second control valve (100), to control the break-make of the Liquid injection cooling pipeline (30).
6. handpiece Water Chilling Units energy conditioning structure according to claim 5, it is characterised in that the handpiece Water Chilling Units energy adjustment
Structure also includes：
Second temperature sensor (110), is arranged on the exhaust end of the compressor (20), for monitoring the compressor (20)
The delivery temperature of exhaust end；
Wherein, the second temperature sensor (110) is connected by controller (80) with second control valve (100), institute
Stating controller (80) is used for when the delivery temperature of the exhaust end of the compressor (20) is higher than preset temperature, control described second
Control valve (100) opens the Liquid injection cooling pipeline (30).
7. a kind of handpiece Water Chilling Units, including compressor (20), condenser (40), evaporator (70) and handpiece Water Chilling Units energy adjustment knot
Structure, it is characterised in that the handpiece Water Chilling Units energy conditioning structure is the handpiece Water Chilling Units energy any one of claim 1 to 6
Measure adjustment structure.
8. a kind of handpiece Water Chilling Units energy adjustment method, it is adaptable to which the handpiece Water Chilling Units energy any one of claim 1 to 6 is adjusted
Nodule structure, it is characterised in that the handpiece Water Chilling Units energy adjustment method includes：
The exhaust end of the compressor (20) of handpiece Water Chilling Units is controlled to be connected with the air return end of the compressor (20) so that the compression
The part high-temperature gas refrigerant of the exhaust end discharge of machine (20) returns to the air return end of the compressor (20)；
Drain side and the connection of the air return end of the compressor (20) of the condenser (40) of the handpiece Water Chilling Units are controlled, so that by
The liquid refrigerants of the drain side discharge of the condenser (40) is sprayed to the air return end of the compressor (20).
9. handpiece Water Chilling Units energy adjustment method according to claim 8, it is characterised in that in the compression of control handpiece Water Chilling Units
The exhaust end of machine (20) is connected with the air return end of the compressor (20) so that the portion of the exhaust end discharge of the compressor (20)
Before the air return end for dividing the high-temperature gas refrigerant return compressor (20), the handpiece Water Chilling Units energy adjustment method also includes：
Detect the leaving water temperature of the water side of the evaporator (70) of the handpiece Water Chilling Units；
The load deviation of the compressor (20) is calculated according to the leaving water temperature；
When compressor (20) actual load≤【A】And load deviation ＜-【B】When, control the exhaust end of the compressor (20)
Connected with the air return end of the compressor (20) so that the part high-temperature gas refrigerant of the exhaust end of the compressor (20) is returned
The air return end of the compressor (20)；
When the compressor (20) actual load≤【A】And load deviation >=-【B】, or, the reality of the compressor (20)
Load ＞【A】When, control the exhaust end of the compressor (20) to be disconnected with the air return end of the compressor (20)；
Wherein,【A】For the reference value of compressor (20) actual load ,-【B】For the reference value of load deviation.
10. handpiece Water Chilling Units energy adjustment method according to claim 8, it is characterised in that controlling the handpiece Water Chilling Units
Condenser (40) drain side and the compressor (20) air return end connection so that the discharge opeing by the condenser (40)
The liquid refrigerants of end discharge is sprayed to before the air return end of the compressor (20), and the handpiece Water Chilling Units energy adjustment method is also wrapped
Include：
Detect the delivery temperature of the exhaust end of the compressor (20)；
Compare the delivery temperature and the size of preset temperature；
Wherein, drain side and the connection of the air return end of the compressor (20) of the condenser (40) of the handpiece Water Chilling Units are controlled,
Include so that the liquid refrigerants discharged by the drain side of the condenser (40) is sprayed to the air return end of the compressor (20)：
When the delivery temperature is more than the preset temperature, drain side and the institute of the condenser (40) of the handpiece Water Chilling Units are controlled
The connection of the air return end of compressor (20) is stated, so that the liquid refrigerants discharged by the drain side of the condenser (40) is sprayed to institute
State the air return end of compressor (20).
11. handpiece Water Chilling Units energy adjustment method according to claim 10, it is characterised in that
When delivery temperature >=【C】DEG C when, control drain side and the compressor (20) of the condenser (40) of the handpiece Water Chilling Units
Air return end connection；
When【C】DEG C ＞ delivery temperatures ＞【D】DEG C when, control the drain side of the condenser (40) of the handpiece Water Chilling Units and the compression
The on off operating mode of the air return end of machine (20) maintains the original state；
As delivery temperature ＜【D】When, control drain side and the compressor (20) of the condenser (40) of the handpiece Water Chilling Units
Air return end disconnects；
Wherein,【C】The high temperature threshold value worked for compressor (20),【D】The normal temperature worked for compressor (20).
12. handpiece Water Chilling Units energy adjustment method according to claim 8, it is characterised in that controlling the handpiece Water Chilling Units
Condenser (40) drain side and the compressor (20) air return end connection so that the discharge opeing by the condenser (40)
The liquid refrigerants of end discharge is sprayed to before the air return end of the compressor (20), and the handpiece Water Chilling Units energy adjustment method is also wrapped
Include：
Drain side by the condenser (40) is discharged and sprays to the liquid refrigerants of the air return end of the compressor (20)
Row cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545315.8A CN107289559A (en) | 2017-07-05 | 2017-07-05 | Water chilling unit energy adjusting structure, energy adjusting method and water chilling unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545315.8A CN107289559A (en) | 2017-07-05 | 2017-07-05 | Water chilling unit energy adjusting structure, energy adjusting method and water chilling unit |
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Family
ID=60100228
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710545315.8A Pending CN107289559A (en) | 2017-07-05 | 2017-07-05 | Water chilling unit energy adjusting structure, energy adjusting method and water chilling unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | Water chilling unit and control method and device thereof |
| CN109764568A (en) * | 2018-12-21 | 2019-05-17 | 珠海格力电器股份有限公司 | water chilling unit and control method |
| CN110454944A (en) * | 2019-08-26 | 2019-11-15 | 重庆美的通用制冷设备有限公司 | Control method, device and the air conditioner of air conditioner |
| CN110608508A (en) * | 2019-09-26 | 2019-12-24 | 珠海格力电器股份有限公司 | Failure processing method and device for cooling device in heat pump system and controller |
| CN110822752A (en) * | 2019-10-26 | 2020-02-21 | 浙江国祥股份有限公司 | Screw water cooler with novel capacity adjusting device and control method |
| CN112113362A (en) * | 2020-09-22 | 2020-12-22 | 珠海格力电器股份有限公司 | Water chilling unit, control method thereof and air conditioning equipment |
| CN113007913A (en) * | 2019-12-20 | 2021-06-22 | 青岛海尔空调电子有限公司 | Water chilling unit and control method thereof |
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| CN2861868Y (en) * | 2005-11-30 | 2007-01-24 | 东莞市广大制冷有限公司 | Air conditioner having unloading device |
| CN104896821A (en) * | 2015-05-19 | 2015-09-09 | 合肥天鹅制冷科技有限公司 | Refrigerating system energy adjusting device |
| 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 |
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| JPS5483155A (en) * | 1977-12-15 | 1979-07-03 | Matsushita Electric Ind Co Ltd | Freezer |
| CN2861868Y (en) * | 2005-11-30 | 2007-01-24 | 东莞市广大制冷有限公司 | Air conditioner having unloading device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108662798A (en) * | 2018-06-21 | 2018-10-16 | 珠海格力电器股份有限公司 | Water chilling unit and control method and device thereof |
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| CN110454944A (en) * | 2019-08-26 | 2019-11-15 | 重庆美的通用制冷设备有限公司 | Control method, device and the air conditioner of air conditioner |
| CN110454944B (en) * | 2019-08-26 | 2021-11-23 | 重庆美的通用制冷设备有限公司 | Control method and device of air conditioner and air conditioner |
| CN110608508A (en) * | 2019-09-26 | 2019-12-24 | 珠海格力电器股份有限公司 | Failure processing method and device for cooling device in heat pump system and controller |
| CN110822752A (en) * | 2019-10-26 | 2020-02-21 | 浙江国祥股份有限公司 | Screw water cooler with novel capacity adjusting device and control method |
| CN113007913A (en) * | 2019-12-20 | 2021-06-22 | 青岛海尔空调电子有限公司 | Water chilling unit and control method thereof |
| CN112113362A (en) * | 2020-09-22 | 2020-12-22 | 珠海格力电器股份有限公司 | Water chilling unit, control method thereof and air conditioning equipment |
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Application publication date: 20171024 |