CN106595104B - Magnetic suspension handpiece Water Chilling Units and its control method - Google Patents
Magnetic suspension handpiece Water Chilling Units and its control method Download PDFInfo
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- CN106595104B CN106595104B CN201611226124.7A CN201611226124A CN106595104B CN 106595104 B CN106595104 B CN 106595104B CN 201611226124 A CN201611226124 A CN 201611226124A CN 106595104 B CN106595104 B CN 106595104B
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- 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
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- 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
- F25B31/00—Compressor arrangements
-
- 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
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- 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
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- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/003—General constructional features for cooling refrigerating machinery
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to refrigeration equipments, magnetic suspension handpiece Water Chilling Units, including there are one shell and tube condenser, a flooded evaporator and magnetic suspension compressors, connector, gas returning port and liquid inlet there are one being set on magnetic suspension compressor, the connector connecting tube of magnetic suspension compressor is connected with each other with shell and tube condenser, the lower end of shell and tube condenser is equipped with liquid outlet and liquid return hole, and fluorine pump is connected on liquid return hole, and fluorine pump is connected on the liquid inlet of the magnetic suspension compressor.One active feed flow cooling fluorine pumping system of magnetic suspension unit design, solve pressure ratio and contradiction existing for cooling, make under the premise of magnetic suspension compressor obtains cooling, the operation of unit more high energy efficiency under low-pressure ratio, realize winter mode operation, frequency conversion magnetic levitation compressor start low frequency operation mode, the minimum load operation in the case of satisfaction demand greatly save energy consumption.
Description
Technical field
The invention belongs to refrigeration equipment more particularly to a kind of special magnetic suspension handpiece Water Chilling Units of cooling.
Background technology
Existing cooling-water machine technology according to the existing relevant regulations of country, the design conditions of chilled water for 12 DEG C into, 7 DEG C go out,
Refrigerating medium clear water is medium, and 30 DEG C of design of cooling water operating mode is into 35 DEG C go out, and summer unit operation refrigeration mode, winter is unit
It deactivates.And the medium in the special cooling-water machine cooling of process of surface treatment cooling is sulfuric acid solution.And for year round cooling operation or
As edible fungi plantation etc. needs year round cooling scene institute.
Vapor compression refrigeration principle, when coolant water temperature is low, condensation temperature is with regard to low, and the operation power of compressor is with regard to low, instead
Coolant water temperature it is high when condensation temperature it is high, the operation power of compressor is just high.In a word the operation power of unit and condensation temperature,
Cooling water temperature, environment temperature are directly proportional.Evaporating temperature is just high when freezing temperature is high, and the refrigerating capacity of unit is with regard to big, otherwise freezing
For evaporating temperature with regard to low, refrigerating capacity will be small when water temperature is low, in a word the refrigerating capacity size of unit and evaporating temperature, chilled water temperature into
Direct ratio, it is the key point for improving unit efficiency that how to go, which makes unit be run at low solidifying temperature and high evaporating temperature,.It is and common
Season of the handpiece Water Chilling Units only to be warm design, coolant water temperature is the temperature limiting by environment, when winter or conditioning in Transition Season
Coolant water temperature can be relatively low during section, and the efficiency of unit will be higher when coolant water temperature is lower.
Magnetic suspension handpiece Water Chilling Units are a kind of energy-efficient handpiece Water Chilling Units, and unit is equipped with magnetic suspension compressor, and magnetic suspension
The frequency control that compressor uses.But the electronic original parts such as the frequency converter of magnetic suspension compressor configuration, inverter need system of freezing
The liquid refrigerant of system is cooled down, however electronics original will can just be entered in the premise of certain pressure ratio by cooling down refrigerant
The cooling system of part.And magnetcisuspension unit will be higher in its lower efficiency of pressure ratio.But there is contradictions with cooling system for this point.
Wanting, which reduces pressure ratio, improves efficiency, but electronic system can not ensure to cool down.Ensure that the cooling of electronic system can not realize highest again
Efficiency.Particularly freeze in winter because ambient temperature is low, coolant water temperature is low, and the temperature at this moment reducing cooling water can be significantly
Reduce the operation power of compressor.When coolant water temperature≤freezing temperature, compressor switchs to gas pump cycle pattern, low-limit frequency fortune
Row, makes the refrigerant of condenser and evaporator be advanced into the pattern of air-flow heat exchange.Minimum power can be down to the 1/ of general power
10 or so.If it is that patent of the present invention one of need to solve the problems, such as to handle contradiction therein.
Magnetic suspension compressor is a kind of high-accuracy equipment, during refrigerant compression, be not allow for liquid refrigerant into
Enter compressor, because liquid is cannot to compress.Liquid refrigerant enters compressor and will result in magnetic suspension compressor centrifugation leaf
Wheel damage.And the deviation of high-speed cruising magnetic levitation bearing system can be made, compressor is protected or damaged.（Magnetic suspension is compressed
About 30,000 revs/min of machine running speed）.
Invention content
The technical problems to be solved by the invention are：In view of the deficienciess of the prior art, provide a kind of raising unit
Efficiency ensures the magnetic suspension handpiece Water Chilling Units of the safety of unit.
The first object of the present invention is achieved using following technical scheme：Magnetic suspension handpiece Water Chilling Units, including there are one shells
Trumpet cooler, a flooded evaporator and magnetic suspension compressor, set that there are one connector, gas returning ports on magnetic suspension compressor
And liquid inlet, connector connecting tube and the shell and tube condenser of magnetic suspension compressor are connected with each other, under shell and tube condenser
End is equipped with liquid outlet and liquid return hole, is connected with fluorine pump on liquid return hole, fluorine pump be connected to the magnetic suspension compressor it is described enter liquid
On mouth, drying cylinder is connected on liquid outlet, electric expansion valve is connected on drying cylinder, electric expansion valve is connected to full-liquid type evaporation
On the refrigerant inlet of device lower end setting, the upper end of flooded evaporator is equipped with the air-breathing being correspondingly connected with magnetic suspension compressor
Mouthful, air intake duct is connected on air entry, air intake duct is connected on the gas returning port of the magnetic suspension compressor side.
Preferably：The flooded evaporator is internally provided with housing, is equipped with successively from below to up in housing
Anti-corrosion internal and external threads heat exchanger tube, gas averaging board and air-breathing baffle are additionally provided with siding on the side wall of housing, and siding is in the gas averaging board
On the two sides of lower section, the air-breathing baffle both sides are evenly distributed with keeps off hole equipped with two rows of air-breathings.
Preferably：Equipped with triangle between the refrigerant inlet and the anti-corrosion internal and external threads heat exchanger tube
Feed liquor baffle is uniformly distributed on the two side of feed liquor baffle and keeps off holes equipped with two rows of feed liquors.
Preferably：Floating ball type liquid level sensor, floating ball type liquid level sensor are additionally provided on the side wall of the housing
One end be arranged on gap between the gas averaging board and the air-breathing plate washer, the other end setting of floating ball type liquid level sensor
Gap in the anti-corrosion internal and external threads heat exchanger tube.
Preferably：The gas averaging board is divided into the silk screen layer of upper strata porous plate, lower floor's porous plate and centre, and upper strata is more
It is porous porous with lower floor that upper strata is respectively uniformly distributed on orifice plate and lower floor's porous plate, upper strata is porous and lower floor is porous in dislocation point
Cloth arranges, and silk screen layer uses 304 materials.
Preferably：The quantity of the magnetic suspension compressor 1 is two, and two magnetic suspension compressors are each attached to institute
It states on flooded evaporator.
Preferably：The horizontal position of the flooded evaporator is higher than the shell and tube condenser.
The second object of the present invention, the control method of magnetic suspension handpiece Water Chilling Units are：In high pressure-temperature in magnetic suspension compressor
The cold coal generated under state is entered by connecting tube in shell and tube condenser, at a normal temperature, is changed in shell and tube condenser
Into the liquid of medium temperature high pressure, the liquid of medium temperature high pressure enters in flooded evaporator, and liquid enters from refrigerant inlet, then from
Flooded evaporator can completely convert a liquid to gas by peculiar structure design, and gas rises from air entry by inhaling
Tracheae is returned in magnetic suspension compressor；
Inverter, the temperature set on inverter equipped with temperature sensor, temperature sensor are housed in magnetic suspension compressor
For a predetermined value, when the temperature in magnetic suspension compressor is more than this predetermined value, the built-in cooling electricity of magnetic suspension compressor is opened
Magnet valve, due to the mode of external and internal pressure difference, the liquid refrigerant in shell and tube condenser is flowed back by connecting tube to be supplied from connector
Magnetic suspension compressor；When low ambient temperature is run, because pressure difference becomes smaller, liquid refrigerant is not supplied or temperature during feed flow deficiency
Degree will rise, and when temperature is to the certain numerical value for being higher than predetermined value, electric cabinet connects fluorine pumping source and starts fluorine pump, using actively
The mode of feed flow, liquid refrigerant enter from fluorine pump in magnetic suspension compressor, cool down the electronic component inside magnetic suspension compressor.
Preferably：The predetermined value is 45 DEG C, and temperature to the certain numerical value higher than predetermined value is 55 DEG C.
Compared with prior art, the beneficial effects of the invention are as follows：One active feed flow cooling fluorine of magnetic suspension unit design
Pumping system solves pressure ratio and contradiction existing for cooling, makes under the premise of magnetic suspension compressor obtains cooling, unit is under low-pressure ratio
Winter mode operation, frequency conversion magnetic levitation compressor start low frequency operation mode, compressor at this time are realized in the operation of more high energy efficiency
Run the 10%-25% that power only has full transhipment row, high-low pressure ratio can be in 1-1.5, and unit still can be with safe operation, and efficiency
Than being original 1.5-3 times, the minimum load operation in the case of satisfaction demand greatlys save energy consumption；The second of the present invention
Purpose is that gas averaging board, gear liquid baffle and air-breathing baffle are equipped in flooded evaporator, and three layers of equal liquid device can be by liquid refrigerant
Heat exchanger tube uniformly is sprayed to, effectively improves the utilization rate of heat exchange area, so as to improve the refrigerating capacity of unit, makes the efficiency of unit more
Height, three layers of liquid-blocking device can also change the direction of the Liquid Flow in evaporator, and refrigerant liquid can be overcome to climb wall phenomenon, made
Liquid refrigerant will not climb wall and enter compressor, influence the operational safety of compressor；Wherein air-breathing plate washer can be by gaseous refrigerant
Dispersion now comes from the evaporation of state refrigerant and returns to suction end so that liquid refrigerant keeps certain plane, reduces the wave of liquid level
Dynamic property；This designing scheme effectively prevents air-breathing from returning the apparatus system of liquid, prevents to push back the risk of liquid damage；The present invention's
Third purpose is according to the special operating condition of surface treatment, run time, refrigerant.It ensures the safety of unit, improves unit
Efficiency.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the side structure schematic diagram of the present invention；
Fig. 3 is the A of Fig. 2 of the present invention to structure diagram；
Fig. 4 is the internal structure schematic diagram of the flooded evaporator 3 of the present invention；
Fig. 5 is the internal structure schematic diagram of the gas averaging board 3-6 of the present invention；
Fig. 6 is the distribution schematic diagram of the porous 14-1 in upper strata and the porous 15-1 of lower floor of the present invention；
Fig. 7 is the structure diagram of the air-breathing baffle 3-7 of the present invention；
Fig. 8 is the structure diagram of the feed liquor baffle 12 of the present invention；
Fig. 9 is the principle of the present invention schematic diagram.
1st, magnetic suspension compressor；2nd, shell and tube condenser；3rd, flooded evaporator；4th, electric cabinet；5th, fluorine pumps；6th, it is dry
Cylinder；7th, electric expansion valve；8th, liquid outlet；9th, liquid return hole；10th, floating ball type liquid level sensor；11st, air intake duct；3-2, housing；3-3、
Anti-corrosion internal and external threads heat exchanger tube；3-4, refrigerant inlet；3-5, siding；3-6, gas averaging board；3-7, air-breathing baffle；3-8, air-breathing
Mouthful；12nd, feed liquor baffle；12-1, feed liquor gear hole；13rd, air-breathing gear hole；14th, upper strata porous plate；15th, lower floor's porous plate；16th, silk screen
Layer；14-1, upper strata are porous；15-1, lower floor are porous；1-2, connector；1-3, gas returning port；1-4, liquid inlet；1-5 connecting tubes.
Specific embodiment
Embodiment 1
Magnetic suspension handpiece Water Chilling Units, including there are one 2, flooded evaporators 3 of shell and tube condenser and magnetic suspension compressions
Machine 1, sets that there are one connector 1-2, gas returning port 1-3 and liquid inlet 1-4, the connections of magnetic suspension compressor 1 on magnetic suspension compressor 1
Mouth 1-2 connecting tubes 1-5 is connected with each other with shell and tube condenser 2, and the lower end of shell and tube condenser 2 is equipped with liquid outlet 8 and returns liquid
Mouthfuls 9, fluorine pump 5 is connected on liquid return hole 9, and fluorine pump 5 is connected on the gas returning port 1-3 of the magnetic suspension compressor 1, liquid outlet
Drying cylinder 6 is connected on 8, electric expansion valve 7 is connected on drying cylinder 6, electric expansion valve 7 is connected under flooded evaporator 3
On the refrigerant inlet 3-4 for holding setting, the upper end of flooded evaporator 3 is equipped with the suction being correspondingly connected with magnetic suspension compressor 1
Air intake duct 11 is connected on gas port 3-8, air entry 3-8, air intake duct 11 is connected to described time of 1 side of magnetic suspension compressor
On gas port 1-3, the flooded evaporator 3 is internally provided with housing 3-2, is equipped with equal liquid successively from below to up in housing 3-2
Plate 3-9, anti-corrosion internal and external threads heat exchanger tube 3-3, gas averaging board 3-6 and air-breathing baffle 3-7 are additionally provided with siding on the side wall of housing 3-2
3-5, siding 3-5 are on the two sides below the gas averaging board 3-6, and the air-breathing baffle 3-7 both sides, which are evenly distributed with, to be equipped with
Two rows of air-breathings keep off hole 13, equipped with triangle between the refrigerant inlet 3-4 and the anti-corrosion internal and external threads heat exchanger tube 3-3
Feed liquor baffle 12 is uniformly distributed on the two side of feed liquor baffle 12 and keeps off hole 12-1 equipped with two rows of feed liquors, and the gas averaging board 3-6 points are
The silk screen layer 16 of upper strata porous plate 14, lower floor's porous plate 15 and centre, it is equal respectively on upper strata porous plate 14 and lower floor's porous plate 15
Even that the porous 14-1 in upper strata and the porous 15-1 of lower floor is distributed with, the porous 14-1 in upper strata and the porous 15-1 of lower floor are in the arrangement that is dislocatedly distributed,
Intermediate silk screen layer 16 uses 304 materials, and the quantity of the magnetic suspension compressor 1 is two, and the magnetic suspension compressor 1 is solid
It is scheduled on flooded evaporator 3, the horizontal position of the flooded evaporator 3 is higher than shell and tube condenser 2.
The control method of magnetic suspension handpiece Water Chilling Units is as follows：
The cold coal generated under high pressure-temperature state in magnetic suspension compressor 1 is downward from connector 1-2, passes through connecting tube 1-
3 enter in shell and tube condenser 2, at a normal temperature, are transformed into the liquid of medium temperature high pressure in shell and tube condenser 2, medium temperature is high
The liquid of pressure passes through drying cylinder 6 and electric expansion valve 7 from liquid outlet 8, finally enters full-liquid type evaporation from refrigerant inlet 3-4
In device 3, then from flooded evaporator 3 by peculiar structure design can completely convert a liquid to gas, gas rise from
Air entry 3-8 is returned to by air intake duct 11 in magnetic suspension compressor 1.
Embodiment 2
In use, inverter in magnetic suspension compressor 1 is housed, is passed on inverter equipped with temperature sensor, temperature
The temperature of sensor setting is 45 DEG C, when the temperature in magnetic suspension compressor 1 is more than 45 DEG C, is opened built in magnetic suspension compressor 1
Solenoid valve is cooled down, due to the mode of external and internal pressure difference, the liquid refrigerant in shell and tube condenser 2 is flowed into from connecting tube 1-5 to be connected
Interface 1-3 is supplied to from connector 1-3 inside magnetic suspension compressor 1,1 inside electricity of liquid refrigerant cooling magnetic suspension compressor
Subcomponent declines temperature；When low ambient temperature is run because pressure difference becomes smaller, liquid refrigerant is not supplied or during feed flow deficiency
Temperature can also rise, and when temperature is higher than 55 DEG C, fluorine pump 5, electricity are actively connected in system, control system startup in order to control in electric cabinet
Source starts fluorine pump 5, and by the way of active feed flow, liquid refrigerant is inhaled into fluorine pump 5 from liquid return hole 9, then from fluorine pump 5 from entering liquid
Mouth 1-4 enters in magnetic suspension compressor 1, and liquid refrigerant cooling 1 internal electronic element of magnetic suspension compressor declines temperature.
Embodiment 3
On the basis of embodiment 1, floating ball type liquid level sensor 10, floating ball type liquid level are additionally provided on flooded evaporator 3
One end of sensor 10 is arranged on the gap between the gas averaging board 3-6 and the air-breathing plate washer 3-7, floating ball type liquid level sensing
The other end of device 10 is arranged on the gap in the anti-corrosion internal and external threads heat exchanger tube 3-3, if can also two be respectively inserted in
Above and below, it is only necessary to measure accurate liquid level.Floating ball type liquid level sensor 10 can detect the liquid inside flooded evaporator 3
The data detected are transferred to control system by position height, floating ball type liquid level sensor 10, and under normal circumstances, liquid is controlled equal
Below gas plate 3-6 positions, the liquid level of this position are in a safety and heat transfer efficient liquid level, and liquid level just will heat exchange
Pipe impregnates, and liquid level can be controlled to be no more than gas averaging board 3-6 by electric cabinet 4.
Simultaneously because liquid level is related, flooded evaporator in flooded evaporator 3 and shell and tube condenser 2
3 liquid level and the height summation of shell and tube condenser 2 are fixed, the liquid level height of flooded evaporator 3 then shell and tube condenser 2
For interior liquid level with regard to low, the requirement to liquid level in shell and tube condenser 2 is to smear plane position, can be by pumping 5 junctions with fluorine
Glass transparent mouth observed, ensure that in this way into magnetic suspension sky compressor cooling electronic component refrigerant must be
Liquid refrigerant, the control high to evaporator liquid level with regard to particularly important, the refrigerant charge in refrigeration system be it is certain, only
Entered in magnetic suspension compressor 1 by fluorine pump 5 after liquid refrigerant throttling, electronics could generate cold without part cooling duct,
Electronics can effectively be cooled down without part.Must not obtain such as electronic component and cool down, magnetic suspension compressor 1 will break down, magnetic suspension pressure
It is damaged inside contracting machine 1；The liquid level of flooded evaporator 3 is higher simultaneously, but floating ball type liquid level sensor 10 ensures
Liquid level is not last to cross anti-corrosion internal and external threads heat exchanger tube 3-3, in this way under the action of anti-corrosion internal and external threads heat exchanger tube 3-3, ability
Really all under gaseous refrigerant situation, the probability for wherein having liquid refrigerant is reduced unexpectedly, is changed from anti-corrosion internal and external threads
The gaseous refrigerant that heat pipe 3-3 gets on uniformly passes through gas averaging board 3-6 so that the top air entry 3-8's of flooded evaporator 3
Power will not generate disturbance to the liquid level state refrigerant of flooded evaporator 3.3 Liquid level accuracy of flooded evaporator in this way
It is just ensured, uniformity of conducting heat and efficiency can exactly improve.Due to the hole of upper strata porous plate 14 and lower floor's porous plate 15 mistake
The direction of position changes, and refrigerant is obstructed, will not directly risen, the secondary blocking of intermediate silk screen layer 16, it can be ensured that liquid level
Refrigerant is difficult to that, by gas averaging board 3-6, the risk that liquid refrigerant enters compressor can be greatly reduced in this way, because full-liquid type steams
The housing 3-2 for sending out device 3 is tubular, and air entry 3-8 must be also designed at top, and liquid level refrigerant can be produced because of air-breathing power
Raw one kind climbs wall phenomenon, makes liquid refrigerant both sides（Diametric(al)）Liquid level can be higher than centre（The center of circle）.This phenomenon can be referred to as
For " the unrestrained phenomenon of rolling ", such phenomenon can easily increase compressor and return liquid risk, and intermediate anti-corrosion internal and external threads in addition can be caused to exchange heat
The waste of pipe 3-3.So increase generation of the so many rear preventing structure to prevent risk here.
Claims (3)
1. magnetic suspension handpiece Water Chilling Units, it is characterised in that：Including there are one shell and tube condenser, a flooded evaporator and magnetcisuspensions
Compressor is floated, is set on magnetic suspension compressor there are one connector, gas returning port and liquid inlet, the connector of magnetic suspension compressor connects
It takes over and is connected with each other with shell and tube condenser, the lower end of shell and tube condenser is equipped with liquid outlet and liquid return hole, is connected on liquid return hole
There is fluorine pump, fluorine pump is connected on the liquid inlet of the magnetic suspension compressor；Drying cylinder is connected on opposite side liquid outlet, is done
Electric expansion valve is connected on dry cylinder, electric expansion valve is connected on the refrigerant inlet of flooded evaporator lower end setting,
The upper end of flooded evaporator is equipped with the air entry being correspondingly connected with magnetic suspension compressor, and air intake duct is connected on air entry, inhales
Tracheae is connected on the gas returning port of the magnetic suspension compressor side, and the flooded evaporator is internally provided with housing,
It is equipped with anti-corrosion internal and external threads heat exchanger tube, gas averaging board and air-breathing baffle successively from below to up in housing, is also set on the side wall of housing
There is siding, siding is on the two sides below the gas averaging board, and the air-breathing baffle both sides are uniformly distributed equipped with two rows of air-breathings
Hole is kept off, the feed liquor baffle of triangle, feed liquor gear are equipped between the refrigerant inlet and the anti-corrosion internal and external threads heat exchanger tube
It is uniformly distributed on the two side of plate and keeps off hole equipped with two rows of feed liquors, floating ball type liquid level sensor is additionally provided on the side wall of the housing,
One end of floating ball type liquid level sensor is arranged on the gap between the gas averaging board and the air-breathing plate washer, and floating ball type liquid level passes
The other end of sensor is arranged on the gap in the anti-corrosion internal and external threads heat exchanger tube, the gas averaging board be divided into upper strata porous plate,
Lower floor's porous plate and intermediate silk screen layer, have been respectively uniformly distributed that upper strata is porous and lower floor on upper strata porous plate and lower floor's porous plate
Porous, upper strata is porous and lower floor is porous in the arrangement that is dislocatedly distributed, and silk screen layer uses 304 materials, the number of the magnetic suspension compressor
It is two to measure, and two magnetic suspension compressors are each attached on the flooded evaporator, the horizontal position of the flooded evaporator
It puts higher than the shell and tube condenser.
2. the control method of magnetic suspension handpiece Water Chilling Units according to claim 1, it is characterised in that：In magnetic suspension compressor
The cold coal generated under high pressure-temperature state is entered by connecting tube in shell and tube condenser, at a normal temperature, shell-tube type condensation
It is transformed into the liquid of medium temperature high pressure in device, the liquid of medium temperature high pressure enters in flooded evaporator, and liquid is from refrigerant inlet
Into, then from flooded evaporator by peculiar structure design can completely convert a liquid to gas, gas rises from suction
Gas port is returned to by air intake duct in magnetic suspension compressor；
Inverter in magnetic suspension compressor is housed, temperature sensor is housed, the temperature of temperature sensor setting is one on inverter
Predetermined value when the temperature in magnetic suspension compressor is more than this predetermined value, opens the built-in cooling solenoid valve of magnetic suspension compressor,
Due to the mode of external and internal pressure difference, the liquid refrigerant in shell and tube condenser is flowed back by connecting tube supplies magnetic suspension from connector
Compressor；When low ambient temperature is run, because pressure difference becomes smaller, liquid refrigerant is not supplied or temperature will during feed flow deficiency
Rise, when temperature is to the certain numerical value for being higher than predetermined value, electric cabinet connects fluorine pumping source and starts fluorine pump, using active feed flow
Mode, liquid refrigerant enter from fluorine pump in magnetic suspension compressor.
3. the control method of magnetic suspension handpiece Water Chilling Units according to claim 2, it is characterised in that：The predetermined value is 45
DEG C, temperature to the certain numerical value higher than predetermined value is 55 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611226124.7A CN106595104B (en) | 2016-12-27 | 2016-12-27 | Magnetic suspension handpiece Water Chilling Units and its control method |
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| CN201611226124.7A CN106595104B (en) | 2016-12-27 | 2016-12-27 | Magnetic suspension handpiece Water Chilling Units and its control method |
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| CN106595104B true CN106595104B (en) | 2018-06-19 |
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| CN107906812B (en) * | 2017-10-16 | 2020-11-20 | 青岛海尔空调电子有限公司 | Air conditioning unit compressor cooling control method and system |
| CN114034130A (en) * | 2021-11-29 | 2022-02-11 | 武汉冰谷制冷科技有限公司 | Open-type screw type brine unit |
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| US20130333412A1 (en) * | 2012-04-20 | 2013-12-19 | Multistack Llc | Central compressor variable refrigerant flow air conditioning sysytem |
| CN103925746B (en) * | 2013-01-16 | 2016-08-24 | 珠海格力电器股份有限公司 | Flooded evaporator and there is the Water-cooling type air conditioner unit of this evaporimeter |
| CN104976838B (en) * | 2015-06-24 | 2019-04-16 | 青岛海尔空调电子有限公司 | The compound water cooler of double mode and its control method |
| CN205561324U (en) * | 2016-01-28 | 2016-09-07 | 苏州必信空调有限公司 | Refrigerating system |
| CN206695418U (en) * | 2016-12-27 | 2017-12-01 | 浙江青风环境股份有限公司 | Magnetic suspension handpiece Water Chilling Units |
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