CN106524559A - Anti-vibration type air cooled heat pump flooded water chilling unit and control method thereof - Google Patents
Anti-vibration type air cooled heat pump flooded water chilling unit and control method thereof Download PDFInfo
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- CN106524559A CN106524559A CN201611236650.1A CN201611236650A CN106524559A CN 106524559 A CN106524559 A CN 106524559A CN 201611236650 A CN201611236650 A CN 201611236650A CN 106524559 A CN106524559 A CN 106524559A
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- interface end
- compressor
- valve
- magnetic valve
- knockout
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Classifications
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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
- F25B13/00—Compression machines, plants or systems, with 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
- F25B31/00—Compressor arrangements
- F25B31/002—Lubrication
- F25B31/004—Lubrication oil recirculating 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
-
- 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
-
- 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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
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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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/19—Pumping down refrigerant from one part of the cycle to another part of the cycle, e.g. when the cycle is changed from cooling to heating, or before a defrost cycle is started
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses an anti-vibration type air cooled heat pump flooded water chilling unit and a control method thereof. The anti-vibration type air cooled heat pump flooded water chilling unit comprises an electric case, a condenser, a compressor, a secondary oil separator, a four-way reversing valve, a finned heat exchanger, a liquid separator, expending valves, a one-way valve, a liquid reservoir, a drying and filtering device, electromagnetic valves, a flooded evaporator, a gas-liquid separator and a jet pump. According to the anti-vibration type air cooled heat pump flooded water chilling unit, return oil of one way of the secondary oil separator and return oil of the flooded evaporator are subjected to intelligent control, and meanwhile unit axial flow fans are subjected to hierarchical control, so that the problems that oil throwing occurs in the process of starting the compressor, the return oil is not stable in the operational process and a low-temperature refrigeration operational system is not stable are avoided. Thus the unit can continuously run under the whole year environment, provide sufficient circulating cooling water for a device and ensure that the device can run normally and safely.
Description
Technical field
The present invention relates to artificial cooling technical field, more particularly to a kind of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units and
Its control method.
Background technology
At present, the air-cooled full-liquid type handpiece Water Chilling Units applied on market can not meet shockproof requirements substantially, specific at some
Field, also requires air-conditioning equipment whole year operation, under compared with low ambient temperature still needs to refrigerating operaton.
Under compared with low ambient temperature, occur once in a while " to throw during the air-cooled full-liquid type handpiece Water Chilling Units compressor start of Anti-seismic
It is oily " and shut down, cause because oil return is unstable compressor oil level to be reported to the police during long-play and shut down, especially compared with low environment temperature
Under degree, during refrigeration system, fluctuation of service is more projected.In order to solve the air-cooled full-liquid type handpiece Water Chilling Units of Anti-seismic in compressor start
During there is " throw oil " once in a while, the problems such as oil return is unstable during long-play.
Therefore, prior art has yet to be improved and developed.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide one kind can overcome compressor start process
In " throw oil " excessive, the unstable problem of oil return in running, and meet whole year operation, and can be under compared with low ambient temperature
The Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units of refrigerating operaton and its control method.
Technical scheme is as follows：
A kind of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, including：
For the electric cabinet of unit operation is electricly connected and controlled with unit；
For by the compressor of low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant；
Become cryogenic high pressure liquid for the high pressure gaseous refrigerant cooling by discharging the compressor with heat exchange with outside
The condenser of state refrigerant；
For the secondary oil separator of oil return；
The heating power expansion valve that the cryogenic high pressure refrigerant of the liquid for discharging flooded evaporator during heating operation is depressured；
The heat absorption of low-temp low-pressure liquid refrigerants is made to be vaporizated into the fin type heat exchange of the gaseous coolant of low-temp low-pressure during for heating operation
Device；
The electric expansion valve that the cryogenic high pressure refrigerant of the liquid for discharging finned heat exchanger during refrigerating operaton is depressured；
The heat absorption of low-temp low-pressure liquid refrigerants is made to be vaporizated into the full-liquid type evaporation of the gaseous coolant of low-temp low-pressure during for refrigerating operaton
Device；
For cold-producing medium is evenly distributed to the knockout of evaporimeter；
For storing the liquid reservoir of cryogenic high pressure liquid refrigerants；
For the device for drying and filtering that the cryogenic high pressure liquid refrigerants to flowing out from the liquid reservoir is dried and filters；
The gas-liquid separator of lime set recovery or gas phase purifying is realized for processing the gas containing lime set；
For by the jet pump of fuel oil injection to oil pump import；
For the four-way change-over valve of refrigerating/heating switchover operation；
For controlling the check valve of refrigerant flow direction；
And for controlling the first kind magnetic valve and Second Type magnetic valve of the compressor；
The compressor, the secondary oil separator, the four-way change-over valve, the finned heat exchanger, the knockout, institute
State heating power expansion valve, the electric expansion valve, the flooded evaporator, the jet pump to be sequentially connected by pipeline；
The second interface end of the compressor is connected with the first interface end of the secondary oil separator, the secondary oil separator
Second interface end be connected with the interface end of the four-way change-over valve, the oil revolving end of the secondary oil separator and the compressor
First interface end is connected；
The interface end of the four-way change-over valve is connected with the first interface end of the finned heat exchanger, the finned heat exchanger
Second interface end be connected with the first interface end of the knockout, second interface end and the check valve of the knockout connect
Connect；
The check valve is connected with the first interface end of the electric expansion valve；
The second interface end of the electric expansion valve is connected with the first interface end of the flooded evaporator, and the full-liquid type steams
The second interface end for sending out device is connected with the interface end of the four-way change-over valve；
The first interface end of the heating power expansion valve is connected with the second interface end of second check valve；
The second interface end of the knockout is connected with the second interface end of the heating power expansion valve；
The four-way change-over valve be arranged at the compressor second interface end and the finned heat exchanger first interface end it
Between；
The secondary oil separator is arranged between the four-way change-over valve and the compressor second interface end.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein,
The finned heat exchanger includes：First finned heat exchanger, the second finned heat exchanger, the 3rd finned heat exchanger,
4th finned heat exchanger；
The knockout includes：First knockout, the second knockout, the 3rd knockout, the 4th knockout；
The four-way change-over valve interface end includes：First interface end, second interface end, the 3rd interface end, the 4th interface end；
The check valve includes：First check valve, the second check valve, the 3rd check valve, the 4th check valve；
The first kind magnetic valve is the first magnetic valve；
The Second Type magnetic valve includes：Second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve；
First finned heat exchanger, second finned heat exchanger, the 3rd finned heat exchanger, the 4th wing
It is connected in parallel between plate heat interchanger；
It is connected in parallel between first knockout, second knockout, the 3rd knockout, the 4th knockout；
First finned heat exchanger and first knockout are connected in series, second finned heat exchanger and described
Two knockouts are connected in series, the 3rd finned heat exchanger and the 3rd knockout are connected in series, the described 4th finned
Heat exchanger is connected in series with the 4th knockout；
The second interface end of first check valve is connected with the first interface end of the liquid reservoir, and the second of the liquid reservoir connects
Mouthful end is connected with the first interface end of the device for drying and filtering, the second interface end of the device for drying and filtering and first electromagnetism
The first interface end connection of valve, the second interface end of first magnetic valve is connected with the first interface end of the 3rd check valve
Connect, the second interface end of the 3rd check valve is connected with the first interface end of the electric expansion valve, the electric expansion valve
Second interface end be connected with the first interface end of the flooded evaporator；
The first interface end of second check valve and the second interface end of first magnetic valve, the of the 3rd check valve
One interface end connects, and the second interface end of second check valve is connected with the first interface end of the heating power expansion valve, described
First interface end of the second interface end of heating power expansion valve with first check valve, the second interface of first knockout
End, the second interface end of second knockout, the second interface end of the 3rd knockout, the second of the 4th knockout
Interface end connects；
The second interface end of the flooded evaporator is connected with the 4th interface end of the four-way change-over valve, the four-way change-over valve
The 3rd interface end be connected with the first interface end of the gas-liquid separator, the second interface end of the gas-liquid separator with it is described
The first interface end connection of compressor；
The first interface end of second magnetic valve and the second interface end of the secondary oil separator, the four-way change-over valve
First interface end connects, and the second interface end of the second magnetic valve is connected with jet pump first interface end；
The first interface end of the 3rd magnetic valve is connected with the oil return opening of flooded evaporator, the second interface of the 3rd magnetic valve
End is connected with jet pump second interface end；
The 3rd interface end of the jet pump is connected with the second interface end of the gas-liquid separator, the compressor first interface end
Connect.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, the compressor first interface end is connect with second
It is connected between mouthful end for controlling the oil pressure difference controller of compressor two ends pressure reduction.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, also include：For accelerating finned heat exchanger to change
The axial flow blower of heat；
It is additionally provided with for controlling axial flow blower between the liquid reservoir second interface end and the device for drying and filtering first interface end
The first condensing pressure controller and the second condensing pressure controller of packet operation；
The first condensing pressure controller is the first axial flow blower, the second axial flow blower, the 5th axial flow blower, the 6th axle stream wind
Machine controlling switch；
The second condensing pressure controller is the 3rd axial flow blower, the 4th axial flow blower controlling switch.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, the unit is additionally provided with framework, the framework
Bolt, locking nut of the installation of part using more than 8.8 grades of anti-seismic performance grade.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, the compressor is single screw compressor or list
Screw rod frequency-changeable compressor.
Described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, wherein, first magnetic valve is joined with the compressor
Lock control, while open, while closing；
4th magnetic valve and the compressor interlocked control, compressor start setting time threshold value, the 4th magnetic valve according to
The time threshold cycle of setting carries out open and close control；
During compressor shutdown, the 4th magnetic valve is simultaneously closed off；
Second magnetic valve is interlocked with the 3rd magnetic valve, at the same open, while close；
Second magnetic valve, the 3rd magnetic valve in cooling mode with the compressor interlocked control, compressor start
Setting time threshold value, the second magnetic valve and the 3rd magnetic valve carried out Tong Guan, open control together according to the time threshold cycle of setting；
During compressor shutdown, second magnetic valve is simultaneously closed off with compressor with the 3rd magnetic valve；
Second magnetic valve, the 3rd magnetic valve are closed in a heating mode.
A kind of control method of the Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units as described in any one of claim 1-7, its
In, the unit allocation pattern includes two kinds of refrigeration mode and heating mode, and the refrigeration mode includes step：
After A1, unit are powered, input refrigeration instruction starts unit, and the first magnetic valve is opened simultaneously with compressor；Oil pressure difference control
Device is in masked state in the setting time threshold value after compressor start；
Described in the set value calculation of A2, unit by condensing pressure controller, axial flow blower opens, stops；
A3, the 4th magnetic valve are carried out according to the time threshold cycle of setting after the compressor start setting time threshold value
Open and close are controlled；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off；
A4, second magnetic valve, the 3rd magnetic valve are after the compressor start setting time threshold value according to setting
Time cycle carries out Tong Guan, opens control together；When the compressor shutdown, second magnetic valve and the 3rd magnetic valve with
Compressor is simultaneously closed off together；
The heating mode specifically includes step：
After B1, unit are powered, input heats instruction and starts unit, and the axial flow blower starts immediately；
After B2, the axial flow blower start, compressor starts immediately, and first magnetic valve is opened simultaneously with the compressor；Institute
State the second magnetic valve, the 3rd magnetic valve to be closed all the time；The oil pressure difference controller is in the compressor start
In masked state in the time cycle for setting afterwards；
B3, the 4th magnetic valve carry out open and close according to the time cycle of setting after the time that the compressor start sets
Control；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off.
Described Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method, wherein, step A2 is specifically included：
A21, by the first axial flow blower described in the set value calculation of the first condensing pressure controller, second axial flow blower,
5th axial flow blower, the 6th axial flow blower are opened, are stopped；
A22, by the 3rd axial flow blower described in the set value calculation of the second condensing pressure controller, the 4th axial flow blower
Open, stop；
Described Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method, wherein, there is a pressure before the compressor start
Discharge time, just starts when the compressor is in minimum load state.
A kind of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units provided by the present invention and its control method, as a result of
Oil return to secondary oil separator oil return all the way, flooded evaporator carries out Based Intelligent Control, can make system oil return efficiency more
Height, while the excessive problem of oil when overcoming compressor start, is thrown, so as to ensure the normal operation of compressor；Unit is according to full-liquid type
The return water temperature of evaporimeter is adjusting the load or unload of compressor, it is ensured that unit is in energy-efficient state operation, significantly
Power is saved, operation cost is reduced；To unit axial flow blower grading control, the i.e. change according to operating mode, by condensing pressure
The air quantity for controlling to adjust condenser, makes unit oil return stable and system stability, so as to ensure that unit oil return is stablized, whole year pacifies
Entirely, it is sustainable, stably run, and provide circulating water/hot water, reliability is high, high cooling efficiency.
Description of the drawings
Fig. 1 is the structural representation of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 2 is the front view of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 3 is the left view of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 4 is the top view one of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 5 is the top view two of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 6 is the unit framework front view of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 7 is the unit framework left view of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 8 is the electric cabinet figure of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Fig. 9 is the evaporimeter Local map of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units preferred embodiment of the present invention.
Figure 10 a are refrigeration mode preferred embodiments in Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method of the present invention
Flow chart.
Figure 10 b are heating mode preferred embodiments in Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method of the present invention
Flow chart.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that specific embodiment described herein is not used to only to explain the present invention
Limit the present invention.
Fig. 1-2 is referred to, as shown in Figure 1-2, described Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, including：
Electric cabinet 30, compressor 1, condenser, secondary oil separator 2, heating power expansion valve 13, finned heat exchanger, electronic expansion
Valve 16, flooded evaporator 18, knockout, liquid reservoir 19, device for drying and filtering 20, gas-liquid separator 22, jet pump 25, four-way are changed
To valve 3, check valve, first kind magnetic valve and Second Type magnetic valve.Wherein, the compressor is single screw compressor or list
Screw rod frequency-changeable compressor.
The compressor 1, the secondary oil separator 2, the four-way change-over valve 3, the finned heat exchanger, described point
Liquid device, the heating power expansion valve 13, the electric expansion valve 16, the flooded evaporator 18, the jet pump 25 are by pipe
Road is sequentially connected.
The second interface end of the compressor 1 is connected with the first interface end of the secondary oil separator 2, the secondary oil
The second interface end of separator 2 is connected with the interface end of the four-way change-over valve 3, the oil revolving end of the secondary oil separator 2 with
1 first interface end of the compressor is connected；
The interface end of the four-way change-over valve 3 is connected with the first interface end of the finned heat exchanger, the fin type heat exchange
The second interface end of device is connected with the first interface end of the knockout, second interface end and first check valve of the knockout
14 first interface end connection；
The second interface end of the 3rd check valve 15 is connected with the first interface end of the electric expansion valve 16；
The second interface end of the electric expansion valve 16 is connected with the first interface end of the flooded evaporator 18, the full liquid
The second interface end of formula evaporimeter 18 is connected with the interface end of the four-way change-over valve；
The first interface end of the heating power expansion valve 13 is connected with the second interface end of second check valve 12；
The second interface end of the knockout is connected with the second interface end of the heating power expansion valve 13；
The four-way change-over valve 3 is arranged at the first interface end at 1 second interface end of the compressor and the finned heat exchanger
Between；
The secondary oil separator 2 is arranged between 1 second interface end of the four-way change-over valve 3 and the compressor.
Further, as shown in figure 1, the finned heat exchanger includes：First finned heat exchanger 4, second is finned
Heat exchanger 5, the 3rd finned heat exchanger 6, the 4th finned heat exchanger 7；
The knockout includes：First knockout 8, the second knockout 9, the 3rd knockout 10, the 4th knockout 11；
The four-way change-over valve includes：First interface end a, second interface end b, the 3rd interface end c, the 4th interface end d；
The check valve includes：First check valve 14, the second check valve 12, the 3rd check valve 15, the 4th check valve 17；
The first kind magnetic valve is the first magnetic valve 21；
The Second Type magnetic valve includes：Second magnetic valve 24, the 3rd magnetic valve 23, the 4th magnetic valve 26.
First finned heat exchanger 4, second finned heat exchanger 5, the 3rd finned heat exchanger 6, institute
State and be connected in parallel between the 4th finned heat exchanger 7；
It is in parallel between first knockout 8, second knockout 9, the 3rd knockout 10, the 4th knockout 11
Connection；
First finned heat exchanger 4 and first knockout 8 are connected in series, second finned heat exchanger 5 and institute
State that the second knockout 9 is connected in series, the 3rd finned heat exchanger 6 and the 3rd knockout 10 are connected in series, described
Four finned heat exchangers 7 are connected in series with the 4th knockout 11；
The second interface end of first check valve 14 is connected with the first interface end of the liquid reservoir 19, the liquid reservoir 19
Second interface end is connected with the first interface end of the device for drying and filtering 20, the second interface end of the device for drying and filtering 20 and institute
State the first interface end connection of the first magnetic valve 21, the second interface end of first magnetic valve 21 and the 3rd check valve 23
The connection of first interface end, the first interface end of the second interface end of the 3rd check valve 23 and the electric expansion valve 16 connects
Connect, the second interface end of the electric expansion valve 16 is connected with the first interface end of the flooded evaporator 18；
Second interface end, the 3rd check valve of the first interface end of second check valve 24 and first magnetic valve 21
15 first interface end connection, the second interface end of second check valve 12 and the first interface end of the heating power expansion valve 13
Connection, the second interface end of the heating power expansion valve 13 and the first interface end of first check valve 14, first point of liquid
It is the second interface end of device 8, the second interface end of second knockout 9, the second interface end of the 3rd knockout 10, described
The second interface end connection of the 4th knockout 11；
The second interface end of the flooded evaporator 18 is connected with the 4th interface end of the four-way change-over valve 3, and the four-way is changed
It is connected to the 3rd interface end of valve 3 with the first interface end of the gas-liquid separator, the second interface end of the gas-liquid separator
It is connected with the first interface end of the compressor 1；
Commutate with the second interface end of the secondary oil separator 2, the four-way at the first interface end of second magnetic valve 24
The first interface end connection of valve 3, the second interface end of the second magnetic valve 24 is connected with 25 first interface end e of jet pump；
The first interface end of the 3rd magnetic valve 23 is connected with the oil return opening of flooded evaporator 18, and the of the 3rd magnetic valve 23
Two interface ends are connected with 25 second interface end f of jet pump；
Second interface end, the 1 first interface end of the compressor of the 3rd interface end of the jet pump 25 and the gas-liquid separator
Connection.
For the clearer description Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units of the present invention, more enter below
One step is explained.As shown in figure 1, the four-way change-over valve 3 is arranged at 1 second interface end of the compressor and the fin type heat exchange
Between the first interface end of device；The secondary oil separator 2 is arranged at the interface end and the compressor of the four-way change-over valve 3
Between 1 second interface end；
The first interface end d of the secondary oil separator 2 is connected with the second interface end of the compressor 1, the secondary oil
It is connected with the first interface end a of the four-way change-over valve 3 from the second interface end p of device 2, the oil return of the secondary oil separator 2
End q is connected by the 4th magnetic valve 26 with 1 first interface end of the compressor；
The first interface end of the second interface end b of the four-way change-over valve 3 and first finned heat exchanger 4, i.e. arrival end
（It is the port of export, i.e. second interface end when heating）Connection, the second interface end of first finned heat exchanger 4, the i.e. port of export
（It is arrival end, i.e. first interface end when heating）With the first interface end of first knockout 8, i.e. arrival end（When heating it is
The port of export, i.e. second interface end）Connection, the second interface end of first knockout 8, the i.e. port of export（It is arrival end when heating,
That is first interface end）It is connected with the first interface end of first check valve 14；
The first interface end of the second interface end b of the four-way change-over valve 3 and second finned heat exchanger 5, i.e. arrival end
（It is the port of export, i.e. second interface end when heating）Connection, the second interface end of second finned heat exchanger 5, the i.e. port of export
（It is arrival end, i.e. first interface end when heating）With the first interface end of second knockout 9, i.e. arrival end（When heating it is
The port of export, i.e. second interface end）Connection, the second interface end of second knockout 9, the i.e. port of export（It is arrival end when heating,
That is first interface end）It is connected with the first interface end of first check valve 14；
The first interface end of the second interface end b of the four-way change-over valve 3 and the 3rd finned heat exchanger 6, i.e. arrival end
（It is the port of export, i.e. second interface end when heating）Connection, the second interface end of the 3rd finned heat exchanger 6, the i.e. port of export
（It is arrival end, i.e. first interface end when heating）With the first interface end of the 3rd knockout 10, i.e. arrival end（When heating it is
The port of export, i.e. second interface end）Connection, the second interface end of the 4th knockout 11, the i.e. port of export（It is entrance when heating
End, i.e. first interface end）It is connected with the first interface end of first check valve 14；
The first interface end of the second interface end b of the four-way change-over valve 3 and the 4th finned heat exchanger 7, i.e. arrival end
（It is the port of export, i.e. second interface end when heating）Connection, the second interface end of the 4th finned heat exchanger 7, the i.e. port of export
（It is arrival end, i.e. first interface end when heating）With the first interface end of the 4th knockout 11, i.e. arrival end（When heating it is
The port of export, i.e. second interface end）Connection, the second interface end of the 4th knockout 11, the i.e. port of export（It is entrance when heating
End, i.e. first interface end）It is connected with the first interface end of first check valve 14；
The first interface end of the electric expansion valve 16 and the second interface end of the finned heat exchanger, the i.e. port of export（Heat
It is arrival end, i.e. first interface end during operation）It is connected；
The first interface end of the flooded evaporator 18, i.e. arrival end（It is the port of export, i.e. second interface end during heating operation）
It is connected with the second interface end of the electric expansion valve 16, the second interface end of the flooded evaporator 18, the i.e. port of export（System
It is arrival end, i.e. first interface end during heat operation）It is connected with the first interface end of the compressor 1；
The first interface end of the heating power expansion valve 13 and the second interface end of the flooded evaporator 18, the i.e. port of export（System
It is arrival end, i.e. first interface end during cold operation）It is connected.
The second interface end of first check valve 14 is connected with the first interface end of the liquid reservoir 19, the liquid reservoir
19 second interface end is connected with the first interface end of the device for drying and filtering 20, the second interface end of the device for drying and filtering 20
It is connected with the first interface end of first magnetic valve 21, the second interface end of first magnetic valve 21 is unidirectional with the described 3rd
The first interface end connection of valve 15, the second interface end of the 3rd check valve 15 and the first interface of the electric expansion valve 16
End connection, the second interface end of the electric expansion valve 16 and the first interface end of the flooded evaporator 18, i.e. arrival end
（It is the port of export, i.e. second interface end when heating）Connection.
It is second check valve, 12 first interface end and the second interface end of first magnetic valve 21, the described 3rd unidirectional
The first interface end connection of valve 15, the second interface end of second check valve 12 and the first interface of the heating power expansion valve 13
End connection, the first interface end of the second interface end of the heating power expansion valve 13 and first check valve 14, described first point
The second interface end of liquid device 8, the i.e. port of export（It is arrival end, i.e. first interface end when heating）, second knockout 9 second
Interface end（It is arrival end, i.e. first interface end when heating）, the 3rd knockout 10 second interface end, i.e. the port of export（System
It is arrival end, i.e. first interface end when hot）, the 4th knockout 11 second interface end, i.e. the port of export（It is entrance when heating
End, i.e. first interface end）Connection；
The second interface end of the flooded evaporator 18, the i.e. port of export（It is arrival end, i.e. first interface end when heating）With institute
State the 4th interface end d connection of four-way change-over valve 3, the 3rd interface end c and the gas-liquid separator 22 of the four-way change-over valve 3
First interface end connection, the second interface end of the gas-liquid separator 22 is connected with the first interface end of the compressor 1；
Commutate with the second interface end of the secondary oil separator 2, the four-way at the first interface end of second magnetic valve 24
The first interface end a connections of valve 3, the second interface end of second magnetic valve 24 and the first interface end e of the jet pump 25
Connection；
The first interface end of the 3rd magnetic valve 23 and the first oil return opening h of the flooded evaporator 18, the second oil return opening
I, the 3rd oil return opening k, the 4th oil return opening m connections, second interface end and the jet pump 25 second of the 3rd magnetic valve 23
Interface end f connects；
3rd interface end g of the jet pump 25 and the second interface end of the gas-liquid separator 22, the first of the compressor 1
Interface end connects.
Further, as shown in figure 1, to connect an oil pressure between 1 first interface end of the compressor and second interface end poor
Controller 29.
Further, as shown in figure 1,19 second interface end of the liquid reservoir and 20 first interface end of the device for drying and filtering
Between be additionally provided with for control axial flow blower packet operation the first condensing pressure controller 27 and the second condensing pressure controller
28；
Wherein, the axial flow blower（Containing motor, not shown in figure）For accelerating finned heat exchanger.
The first condensing pressure controller 27 is the first axial flow blower 31（Containing motor, not shown in figure）, the second axle stream
Blower fan 32（Containing motor, not shown in figure）, the 5th axial flow blower 35（Containing motor, not shown in figure）, the 6th axial flow blower 36（Contain
Motor, not shown in figure）Controlling switch；
The second condensing pressure controller 28 is the 3rd axial flow blower 33（Containing motor, not shown in figure）, the 4th axial flow blower
34（Containing motor, not shown in figure）Controlling switch.
Further, Fig. 2～Fig. 9 is seen also, as shown in Fig. 2～Fig. 9, the unit is additionally provided with framework.Specifically
Ground, the framework sheet metal component of the unit, buttress brace, the critical component support member sheet material thick using 3mm is not less than, base adopt groove
Steel 37 is designed, and framework is strengthened using 45 ° of diagonal brace buttress braces 38；
Further, as shown in Fig. 2～Fig. 9, the evaporimeter 18, compressor 1, the first finned heat exchanger 4, second are finned
Heat exchanger 5, the 3rd finned heat exchanger 6, the 4th finned heat exchanger 7, secondary oil separator 2, liquid reservoir 19, gas-liquid separator
22nd, the installation of the miscellaneous part such as unit column 36 and support beam 42 is using the bolt of more than 8.8 grades of performance rate, locking screw
It is female.
Further, first finned heat exchanger 4, the second finned heat exchanger 5, the 3rd finned heat exchanger 6,
Four finned heat exchanger 7 using middle reinforcing plate 39, strengthen fixing by upper head plate 40, bottom plate 41, and the installation of condenser is fixed and adopted
With " people " font support beam 43.
Further, 46 surrounding of blower fan top board of the unit is strengthened using buttress brace 45, and motor mounting rack 44 passes through wind
Machine top board 46 is fixed with buttress brace.
By arrangement above, the unit can keep its integrality under SL-2 earthquake loads, in SL-2 earthquake earthquakes
Remain to operate in accident and after SL-2 earthquake accidents and keep its reliability.
Further, the electrical equipment 47 of the electric cabinet 30 is fixed with bolts in electric mounting board 48；It is automatically controlled
Case 30 is installed and strengthens fixing using bracing frame 49；
Further, the water inlet pipe 50 of the evaporimeter 18, outlet pipe 51 using support beam 52,53 support, support beam respectively with
End cap 54 and water inlet pipe 50, outlet pipe 51 connect.
Further, first magnetic valve 21 and 1 interlocked control of the compressor, while open, while closing；
4th magnetic valve 26 and 1 interlocked control of the compressor, the compressor start setting time cycle（Such as 360s）,
Time cycle of 4th magnetic valve 26 according to setting,（Such as 30s is opened, 60s is closed）Carry out open and close control；When the compressor
During shutdown, the 4th magnetic valve is simultaneously closed off；
Second magnetic valve 24 and 23 valve of the 3rd electromagnetism interlocking, while open, while close；
Second magnetic valve 24, the 3rd magnetic valve 23 in cooling mode with 1 interlocked control of the compressor, the pressure
Contracting machine 1 starts the setting time cycle（Such as 360s）, then second magnetic valve 24 and the 3rd magnetic valve 23 are according to the time for setting
Cycle（Such as 30s is opened, 90s is closed）Carry out Tong Guan, open control together；When the compressor 1 is shut down, second magnetic valve 24 and institute
State the 3rd magnetic valve 23 to simultaneously close off with the compressor 1.
Second magnetic valve 24, the 3rd magnetic valve 23 are closed in a heating mode.
Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units control model of the present invention includes refrigeration mode and heats mould
Two kinds of formula.As shown in figure 1, process of refrigerastion medium flow direction is clockwise, otherwise heating operations medium flow direction is counterclockwise.Wherein,
Process of refrigerastion is：Compressor 1 will be discharged after low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant, high pressure gaseous
Refrigerant enters back into the condenser, the condenser by with heat exchange with outside, the cooling of high pressure gaseous refrigerant is become into low
Warm high-pressure liquid refrigerant, then cryogenic high pressure liquid refrigerants enter liquid reservoir 19, next, the low temperature stored in liquid reservoir 19 is high
Pressure liquid refrigerants is dried and is filtered in entering back into device for drying and filtering 20, and the cryogenic high pressure liquid after drying is filtered afterwards is cold
Matchmaker enters expansion valve, and the cryogenic high pressure liquid refrigerants after dry filter is converted into low-temp low-pressure liquid refrigerants by expansion valve；Then
Low-temp low-pressure liquid refrigerants enters flooded evaporator 18, and flooded evaporator 18 is vaporizated into the heat absorption of low-temp low-pressure liquid refrigerants
Low-temp low-pressure gaseous coolant, last low-temp low-pressure gaseous coolant return to compressor 1, complete a process of refrigerastion.
Based on above-described embodiment, the present invention also provides a kind of control method of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units,
As shown in Figure 10 a, Figure 10 b, the unit allocation pattern includes two kinds of refrigeration mode and heating mode, and the refrigeration mode is concrete
Comprise the following steps：
S110：After unit is powered, input refrigeration instruction starts unit, and first magnetic valve is opened simultaneously with the compressor；
The oil pressure difference controller is in masked state in the setting time after the compressor start；
S120：Axial flow blower described in set value calculation of the unit by condensing pressure controller（Containing motor）Open, stop.
Further, in the step 120, by first axle stream wind described in the set value calculation of the first condensing pressure controller
Machine 31（Containing motor）, second axial flow blower 32（Containing motor）, the 5th axial flow blower 35（Containing motor）, the 6th axle
Flow fan 36（Containing motor）Open, stop；By the 3rd axial flow blower 33 described in the set value calculation of the second condensing pressure controller
（Containing motor）, the 4th axial flow blower 34（Containing motor）Open, stop；
S130：4th magnetic valve is in the compressor start setting time（Such as 360s）It is all according to the time threshold of setting afterwards
Phase（Such as 30s is opened, 60s is closed）Carry out open and close control；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off；
S140：Second magnetic valve, the 3rd magnetic valve are in the compressor start setting time threshold value（Such as 360s）Afterwards
According to the time cycle of setting（Such as 30s is opened, 90s is closed）Carry out Tong Guan, open control together；When the compressor shutdown, described
Two magnetic valves are simultaneously closed off with compressor with the 3rd magnetic valve；
The heating mode specifically includes following steps：
S210：After unit is powered, input heats instruction and starts unit, the axial flow blower（Containing motor）Start immediately；
S220：The axial flow blower（Containing motor）Compressor start after startup, first magnetic valve with the compressor simultaneously
Open；Second magnetic valve, the 3rd magnetic valve are closed all the time；The oil pressure difference controller is in the compression
In masked state in the time cycle that machine is set after starting；
Specifically, the axial flow blower（Containing motor）After starting 20s, compressor starts immediately, because there is the last one before compressor start
Discharge time processed（Such as 20s）, to ensure to start under minimum load state during compressor start, and first magnetic valve
Opened with the compressor simultaneously；Second magnetic valve, the 3rd magnetic valve are closed all the time；Oil pressure difference controller exists
Set after compressor start in certain time period in masked state；
S230：4th magnetic valve after the time that the compressor start sets according to setting time cycle carry out out,
Close control；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off.Specifically, the 4th magnetic valve is in compression
Machine starts certain time of setting（Such as 360s）Switch control rule is carried out according to the setting time cycle afterwards（Such as 30s is opened, 60s is closed）；Work as compression
When machine is shut down, the 4th magnetic valve 26 is simultaneously closed off.
In sum, the present invention is provided Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units and its control method, due to adopting
Based Intelligent Control is carried out with the oil return to secondary oil separator oil return all the way, flooded evaporator, imitates can system oil return
Rate is higher, while the excessive problem of oil when overcoming compressor start, is thrown, so as to ensure the normal operation of compressor；Unit is according to full
The return water temperature of solution type evaporator is adjusting the load or unload of compressor, it is ensured that unit is in energy-efficient state operation,
Power is greatlyd save, operation cost is reduced；To unit axial flow blower grading control, the i.e. change according to operating mode, by condensing pressure
The air quantity controlled to adjust condenser of power, makes unit oil return stable and system stability, so as to ensure that unit oil return is stable, annual
It is safe, sustainable, stably run, and provide circulating water/hot water, reliability is high, high cooling efficiency.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, and for those of ordinary skills, can
To be improved according to the above description or be converted, all these modifications and variations should all belong to the guarantor of claims of the present invention
Shield scope.
Claims (10)
1. a kind of Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units, it is characterised in that include：
For the electric cabinet of unit operation is electricly connected and controlled with unit；
For by the compressor of low-temp low-pressure gaseous coolant boil down to high pressure gaseous refrigerant；
Become cryogenic high pressure liquid for the high pressure gaseous refrigerant cooling by discharging the compressor with heat exchange with outside
The condenser of state refrigerant；
For the secondary oil separator of oil return；
The heating power expansion valve that the cryogenic high pressure refrigerant of the liquid for discharging flooded evaporator during heating operation is depressured；
The heat absorption of low-temp low-pressure liquid refrigerants is made to be vaporizated into the fin type heat exchange of the gaseous coolant of low-temp low-pressure during for heating operation
Device；
The electric expansion valve that the cryogenic high pressure refrigerant of the liquid for discharging finned heat exchanger during refrigerating operaton is depressured；
The heat absorption of low-temp low-pressure liquid refrigerants is made to be vaporizated into the full-liquid type evaporation of the gaseous coolant of low-temp low-pressure during for refrigerating operaton
Device；
For cold-producing medium is evenly distributed to the knockout of evaporimeter；
For storing the liquid reservoir of cryogenic high pressure liquid refrigerants；
For the device for drying and filtering that the cryogenic high pressure liquid refrigerants to flowing out from the liquid reservoir is dried and filters；
The gas-liquid separator of lime set recovery or gas phase purifying is realized for processing the gas containing lime set；
For by the jet pump of fuel oil injection to oil pump import；
For the four-way change-over valve of refrigerating/heating switchover operation；
For controlling the check valve of refrigerant flow direction；
And for controlling the first kind magnetic valve and Second Type magnetic valve of the compressor；
The compressor, the secondary oil separator, the four-way change-over valve, the finned heat exchanger, the knockout, institute
State heating power expansion valve, the electric expansion valve, the flooded evaporator, the jet pump to be sequentially connected by pipeline；
The second interface end of the compressor is connected with the first interface end of the secondary oil separator, the secondary oil separator
Second interface end be connected with the interface end of the four-way change-over valve, the oil revolving end of the secondary oil separator and the compressor
First interface end is connected；
The interface end of the four-way change-over valve is connected with the first interface end of the finned heat exchanger, the finned heat exchanger
Second interface end be connected with the first interface end of the knockout, second interface end and the check valve of the knockout connect
Connect；
The check valve is connected with the first interface end of the electric expansion valve；
The second interface end of the electric expansion valve is connected with the first interface end of the flooded evaporator, and the full-liquid type steams
The second interface end for sending out device is connected with the interface end of the four-way change-over valve；
The first interface end of the heating power expansion valve is connected with the second interface end of second check valve；
The second interface end of the knockout is connected with the second interface end of the heating power expansion valve；
The four-way change-over valve be arranged at the compressor second interface end and the finned heat exchanger first interface end it
Between；
The secondary oil separator is arranged between the four-way change-over valve and the compressor second interface end.
2. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 1, it is characterised in that
The finned heat exchanger includes：First finned heat exchanger, the second finned heat exchanger, the 3rd finned heat exchanger,
4th finned heat exchanger；
The knockout includes：First knockout, the second knockout, the 3rd knockout, the 4th knockout；
The four-way change-over valve interface end includes：First interface end, second interface end, the 3rd interface end, the 4th interface end；
The check valve includes：First check valve, the second check valve, the 3rd check valve, the 4th check valve；
The first kind magnetic valve is the first magnetic valve；
The Second Type magnetic valve includes：Second magnetic valve, the 3rd magnetic valve, the 4th magnetic valve；
First finned heat exchanger, second finned heat exchanger, the 3rd finned heat exchanger, the 4th wing
It is connected in parallel between plate heat interchanger；
It is connected in parallel between first knockout, second knockout, the 3rd knockout, the 4th knockout；
First finned heat exchanger and first knockout are connected in series, second finned heat exchanger and described
Two knockouts are connected in series, the 3rd finned heat exchanger and the 3rd knockout are connected in series, the described 4th finned
Heat exchanger is connected in series with the 4th knockout；
The second interface end of first check valve is connected with the first interface end of the liquid reservoir, and the second of the liquid reservoir connects
Mouthful end is connected with the first interface end of the device for drying and filtering, the second interface end of the device for drying and filtering and first electromagnetism
The first interface end connection of valve, the second interface end of first magnetic valve is connected with the first interface end of the 3rd check valve
Connect, the second interface end of the 3rd check valve is connected with the first interface end of the electric expansion valve, the electric expansion valve
Second interface end be connected with the first interface end of the flooded evaporator；
The first interface end of second check valve and the second interface end of first magnetic valve, the of the 3rd check valve
One interface end connects, and the second interface end of second check valve is connected with the first interface end of the heating power expansion valve, described
First interface end of the second interface end of heating power expansion valve with first check valve, the second interface of first knockout
End, the second interface end of second knockout, the second interface end of the 3rd knockout, the second of the 4th knockout
Interface end connects；
The second interface end of the flooded evaporator is connected with the 4th interface end of the four-way change-over valve, the four-way change-over valve
The 3rd interface end be connected with the first interface end of the gas-liquid separator, the second interface end of the gas-liquid separator with it is described
The first interface end connection of compressor；
The first interface end of second magnetic valve and the second interface end of the secondary oil separator, the four-way change-over valve
First interface end connects, and the second interface end of the second magnetic valve is connected with jet pump first interface end；
The first interface end of the 3rd magnetic valve is connected with the oil return opening of flooded evaporator, the second interface of the 3rd magnetic valve
End is connected with jet pump second interface end；
The 3rd interface end of the jet pump is connected with the second interface end of the gas-liquid separator, the compressor first interface end
Connect.
3. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 2, it is characterised in that the compressor
It is connected between one interface end and second interface end for controlling the oil pressure difference controller of compressor two ends pressure reduction.
4. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 3, it is characterised in that also include：For
Accelerate the axial flow blower of finned heat exchanger heat exchange；
It is additionally provided with for controlling axial flow blower between the liquid reservoir second interface end and the device for drying and filtering first interface end
The first condensing pressure controller and the second condensing pressure controller of packet operation；
The first condensing pressure controller is the first axial flow blower, the second axial flow blower, the 5th axial flow blower, the 6th axle stream wind
Machine controlling switch；
The second condensing pressure controller is the 3rd axial flow blower, the 4th axial flow blower controlling switch.
5. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 4, it is characterised in that the unit also sets
It is equipped with framework, the installation of the frame parts bolt, locking nut using more than 8.8 grades of anti-seismic performance grade.
6. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 5, it is characterised in that the compressor is
Single screw compressor or single screw rod frequency-changeable compressor.
7. Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units according to claim 6, it is characterised in that first electromagnetism
Valve and the compressor interlocked control, while open, while closing；
4th magnetic valve and the compressor interlocked control, compressor start setting time threshold value, the 4th magnetic valve according to
The time threshold cycle of setting carries out open and close control；
During compressor shutdown, the 4th magnetic valve is simultaneously closed off；
Second magnetic valve is interlocked with the 3rd magnetic valve, at the same open, while close；
Second magnetic valve, the 3rd magnetic valve in cooling mode with the compressor interlocked control, compressor start
Setting time threshold value, the second magnetic valve and the 3rd magnetic valve carried out Tong Guan, open control together according to the time threshold cycle of setting；
During compressor shutdown, second magnetic valve is simultaneously closed off with compressor with the 3rd magnetic valve；
Second magnetic valve, the 3rd magnetic valve are closed in a heating mode.
8. a kind of control method of the Anti-seismic air-cooled heat pump full-liquid type handpiece Water Chilling Units as described in any one of claim 1-7, which is special
Levy and be, the unit allocation pattern includes two kinds of refrigeration mode and heating mode, and the refrigeration mode includes step：
After A1, unit are powered, input refrigeration instruction starts unit, and the first magnetic valve is opened simultaneously with compressor；Oil pressure difference control
Device is in masked state in the setting time threshold value after compressor start；
Described in the set value calculation of A2, unit by condensing pressure controller, axial flow blower opens, stops；
A3, the 4th magnetic valve are carried out according to the time threshold cycle of setting after the compressor start setting time threshold value
Open and close are controlled；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off；
A4, second magnetic valve, the 3rd magnetic valve are after the compressor start setting time threshold value according to setting
Time cycle carries out Tong Guan, opens control together；When the compressor shutdown, second magnetic valve and the 3rd magnetic valve with
Compressor is simultaneously closed off together；
The heating mode specifically includes step：
After B1, unit are powered, input heats instruction and starts unit, and the axial flow blower starts immediately；
After B2, the axial flow blower start, compressor starts immediately, and first magnetic valve is opened simultaneously with the compressor；Institute
State the second magnetic valve, the 3rd magnetic valve to be closed all the time；The oil pressure difference controller is in the compressor start
In masked state in the time cycle for setting afterwards；
B3, the 4th magnetic valve carry out open and close according to the time cycle of setting after the time that the compressor start sets
Control；When the compressor shutdown, the 4th magnetic valve is simultaneously closed off.
9. a kind of Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method according to claim 8, it is characterised in that
Step A2 is specifically included：
A21, by the first axial flow blower described in the set value calculation of the first condensing pressure controller, second axial flow blower,
5th axial flow blower, the 6th axial flow blower are opened, are stopped；
A22, by the 3rd axial flow blower described in the set value calculation of the second condensing pressure controller, the 4th axial flow blower
Open, stop.
10. a kind of Anti-seismic air-cooled heat pump full-liquid type water chilling unit control method according to claim 8, its feature exist
In, have the forced unloading time before the compressor start, when the compressor is in minimum load state just start.
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|---|---|---|---|---|
| CN108662818A (en) * | 2018-05-04 | 2018-10-16 | 重庆美的通用制冷设备有限公司 | The control method and device of cooling by wind wind turbine pressure ratio |
| CN113623908A (en) * | 2021-08-12 | 2021-11-09 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal water chilling unit and anti-seismic operation control method thereof |
| CN113623908B (en) * | 2021-08-12 | 2023-02-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Centrifugal water chilling unit and anti-seismic operation control method thereof |
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