CN206073379U - A kind of pump drives biphase compound-refrigerating unit monitoring system - Google Patents
A kind of pump drives biphase compound-refrigerating unit monitoring system Download PDFInfo
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- CN206073379U CN206073379U CN201621066992.9U CN201621066992U CN206073379U CN 206073379 U CN206073379 U CN 206073379U CN 201621066992 U CN201621066992 U CN 201621066992U CN 206073379 U CN206073379 U CN 206073379U
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- controller
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- temperature
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Abstract
A kind of pump drives biphase compound-refrigerating unit monitoring system, belongs to refrigeration and air-conditioning technical field；Including core component and various accessories.Using the different working modes of the compound unit of temperature controller switching, in each of these modes of operation simultaneously, the adjustment of compound unit cold is carried out using converter, and the parameter and reading in temperature controller and converter is shown on the touchscreen, to be entirely combined the monitoring and warning of unit working condition.The system can meet the control requirement of existing most of compound-refrigerating units with indoor/outdoor temperature-difference as control condition, and universality is good.The PID control parameter strategy of single-input single-output, simple and stable, data tracking ability are strong.Step switching is combined with variable frequency adjustment, and accuracy of temperature control is high, and system energy consumption is low, and unit reliability is high.
Description
Technical field
This utility model devises a kind of monitoring system that biphase compound-refrigerating unit is driven for pump, belongs to refrigeration air-conditioner
Technical field.
Background technology
It is estimated that data center of China power consumption in 2015 has been close to 100,000,000,000 kWh, and wherein most of data centers
PUE is still generally more than 2.2, obvious with international most advanced level gap.Want to reduce PUE, must just reduce data center's air-conditioning energy
Consumption, and carries out reducing energy consumption using loop heat pipe technology to existing machine room, can natural cooling source outside effectively utilizes room, so as to significantly
Air conditioning energy consumption is reduced, the energy-saving and emission-reduction of data center are realized.
At present, pump driving circuit heat pipe/steam compressed composite refrigeration system has tentatively realized application in the data center,
A kind of integrated machine room air conditioning system (CN200910235429.8), a kind of easy heat recovery device of refrigeration system
(CN201320561006.7), integrated natural cooling computer-room air conditioning system (CN201510571894.4) three patents are situated between respectively
The data center module composite refrigeration system of the three kinds of different utilization loop heat pipe technologies that continued.Although system form is had nothing in common with each other,
But the overall control thinking of three kinds of systems is all realizing by the switching of heat pipe circuit under different condition and vapor compression circuit
The conversion of system different working modes, so as to realize energy saving of system.
Compound computer-room air conditioning system and its control method (CN201510091854.X), computer-room air conditioning system and its control
Method (CN201510427788.9), compound computer-room air conditioning system and its control method (CN201510437751.4) three are specially
Profit specially refer to effect of the attemperating unit in system running pattern handoff procedure, but control logic still concentrates on pump loop
With the conversion of compressor loop, although conscious in patent to be compressed machine no-load voltage ratio work in view of according to different outdoor temperatures
Make with reducing energy consumption amount, but this remains the design flow adjustment that macroscopic view is carried out to unit refrigerating capacity, and it is hot negative for inside machine room
The tracking situation of lotus is still not ideal enough, control logic relative coarseness, and control accuracy and energy-saving effect are limited.
More efficiently to realize the energy-saving and emission-reduction of data center module, composite refrigeration system is improved in thermic load tracking, temperature control essence
Problem in terms of degree and energy-saving effect, this utility model for a kind of containing plural platform outdoor fan and indoor fan, respectively with
Working medium pump and compressor drive biphase compound-refrigerating unit as the pump of the dynamical element under two kinds of circulation patterns, specify that system
The technique direction of control, and propose corresponding technical scheme.
Utility model content
The purpose of this utility model is to provide a kind of operational monitoring and control system that compound-refrigerating unit is driven for pump
System, while rationally switching unit operational mode, refines the control strategy under each pattern, to improve the temperature control essence of compound unit
Degree and energy-saving effect.
What data center machine room was usually closed, the annual operating of equipment in machine room, in machine room, humidity change is little, and temperature is general
Require to keep annual consistent.Therefore, be enough to realize data center module using indoor/outdoor temperature-difference as the control condition of data center module air-conditioning
Environmental Kuznets Curves require.This condition has obtained affirmative and the accreditation of numerous scholars and research staff, and is widely used in current
Composite refrigeration system.
In the technical scheme adopted by this utility model, major control condition is also indoor/outdoor temperature-difference.Simultaneously as indoor
Temperature requirement whole year is constant, therefore using outdoor temperature as major control condition, indoor temperature is used as secondary control condition.
For achieving the above object, survey of the technical solution adopted in the utility model mainly around indoor temperature and outdoor temperature
Amount and feedback are launched, and the pump of utility model design drives biphase compound-refrigerating unit monitoring system to include touch screen, controller, change
The core components such as frequency device, and band lamp locking press button, 3P choppers, 1P choppers, wire casing, 220V/DC245A Switching Power Supplies, in
Between the accessory such as relay, time-delay relay, connecting terminal block, temperature sensor, zero-emission, thermorelay, catalyst.
Temperature sensor (11) is connected on the signal input point of controller (2), for sensing temperature signal；Controller (2)
Alarm signal output point connects the catalyst (14) of auxiliary reclay (8) input and outdoor fan, and controller (2) control signal is defeated
Go out a little to connect converter (15) control signal receiving point, controller (2) communication signal point and the contact of converter (15) communication signal point
Touch screen (1) communication signal point；Auxiliary reclay (8) output termination converter (15) must electrically activate signaling point, working medium pump loop electricity
The time-delay relay (9) of magnet valve, the time-delay relay (9), working medium pump and compressor of compressor loop electromagnetic valve；Compressor loop
The time-delay relay (9) of time-delay relay (9) the output termination compressor loop electromagnetic valve of electromagnetic valve, working medium pump and compressor is defeated
Go out the catalyst (14) that end connects working medium pump and compressor respectively；
Converter (15) has two, the power output termination indoor fan of the converter (15.1) of indoor fan, working medium pump
With the power output termination working medium pump and the catalyst (14) of compressor, working medium pump and compressor of the converter (15.2) of compressor
Catalyst (14) interlocking, while outfan is connected to working medium pump and compressor respectively, be connected to jointly the contact of outdoor fan
Device (14), the output termination outdoor fan of the catalyst (14) of outdoor fan；
It is the main switch of monitoring system with lamp locking press button (3), is responsible for the start-stop of whole system；3P choppers (4) have
Six, be main breaker, compressor chopper, working medium pump chopper, indoor fan chopper, the open circuit of 1# outdoor fans respectively
Device, 2# outdoor fan choppers；And 1P choppers (5) have two, be respectively 220V/DC24V 5A Switching Power Supplies choppers and
Secondary circuit chopper；
Each part constitutes whole control system according to above-mentioned connection order, and temperature sensor (11) senses outdoor temperature respectively
t1, indoor temperature t2With condensator outlet temperature platform temperature t3, and these temperature signals are passed to into controller (2), controller
(2) it is divided into indoor temperature controller (2.1), outdoor temperature controller (2.2) and condensator outlet temperature controller (2.3), it is right
Above-mentioned two converters (15) are answered, indoor temperature controller (2.1) number of units is also two, realized to two converters respectively
(15) control；Controller (2) sends different alarm for the size of each temperature signal, compound unit is performed different
Operation：t1During ＜ a DEG C, working medium pump circulation is opened；t1When >=a DEG C, compressor cycle is opened；t3When≤d DEG C, closing one is outdoor
Blower fan, t3When≤e DEG C, a, d and e are the numerical value of different outdoor temperatures, and a ＞ d ＞ e, close two outdoor fans；t2≤b℃
When, close compressor, working medium pump and outdoor fan；t2When >=c DEG C, b and c is different indoor temperature numerical values, and c ＞ b, is closed by force
Working medium pump circulation is closed, compressor cycle is opened；Receivep, b ＜ tp
＜ c, according to t2Relative to target temperature tpDeparture degree send control signal, control the output frequency of converter (15)；
Touch screen (1) and converter (15), are connected by connection and are led between touch screen (1) and controller (2)
News, and the real time data of the two and parameter are reflected on touch screen (1)；
When the quantity of converter (15) changes, the quantity of controller (2) is also changed therewith, converter
(15) there is corresponding relation with the quantity of controller (2).
Described compound unit refers to pump driving/steam compression type compound-refrigerating unit, compound unit include working medium pump and
Two kinds of dynamical elements of compressor, every kind of dynamical element can multiple stage parallel running, wherein one to multiple adopts variable frequency adjustment, remaining
Each is adjusted using start-stop, and variable frequency adjustment is realized by converter (15), and start-stop is adjusted to be realized by the alarm point on controller (2)；
There is one or more switch condition between two kinds of dynamical elements, reach switch condition, dynamical element performs corresponding start-stop；Power
The closed circuit form of element is not limited, and shares one group of indoor and outdoor blower fan.
Described controller (2) is the temperature controller or PLC devices that can receive temperature signal output control signal.
Described temperature sensor (11) is T-shaped thermocouple, Pt100 thermal resistances or Cu100 thermal resistances.
Described touch screen (1) and controller (2), the communication between touch screen (1) and converter (15) use Modbus
RTU communications protocol, is designed with RS485 interfaces on three parts.
Described alarm signal is sent by the alarm point on controller (2), and response mode is divided into upper limit alarm and lower limit
Report to the police.
Described interlocking receives the controller (2) of outdoor temperature signal by the normally-closed contact realization of two catalysts (14)
When sending the signal of start and stop corresponding component, correspondence compressor can receive signal adhesive with two catalysts (14) of working medium pump, and
In two after the adhesive of arbitrary catalyst (14), in loop, corresponding normally-closed contact disconnects, it is ensured that another cannot adhesive so that
Compressor and working medium pump only have one can obtain electric.
The controller (2) of described reception condensator outlet temperature signal wants start and stop outdoor fan, needs to be contacted by two
Device (14) is realized, when receiving the signal of the start and stop outdoor fan that controller (2) is provided, the adhesive of corresponding catalyst (14), and room
Electric operation on outer blower fan；Meanwhile, the catalyst (14) of the compressed machine of catalyst (14) and working medium pump of outdoor fan is limited, only
In the catalyst (14) of compressor and working medium pump during any one adhesive, the catalyst (14) of outdoor fan can receive control
The signal that device (2) is given.
Described connection adopts Shielded Twisted Pair communication cable.
Compared with prior art, this utility model has the advantages that：
1st, with indoor/outdoor temperature-difference as control condition, the control that can meet existing most of compound-refrigerating units will for the system
Ask, only need to slightly adjust the demand for control that can just meet different units, universality is good.
2nd, PID control parameter strategy of the system using single-input single-output, simple and stable, Real-time Feedback Indoor Thermal
Load variations situation, data tracking ability are strong.
3rd, step switching is combined with variable frequency adjustment, with the output current of controller come the start and stop of control unit and operating frequency
Rate, both ensure that accuracy of temperature control, had reduced system energy consumption, turn avoid damage of the frequent start-stop to machine group parts, improves machine
Group reliability.
Description of the drawings
Fig. 1 is that a kind of pump drives biphase compound-refrigerating unit monitoring system interconnector figure；
Fig. 2 is that a kind of pump drives biphase compound-refrigerating unit monitoring system schematic appearance；
Fig. 3 is that a kind of pump drives biphase compound-refrigerating unit monitoring system outboard front view；
Fig. 4 is specific embodiment compound-refrigerating unit monitoring system internal layout.
In figure：1- touch screens, 2- controllers, 3- band lamp locking press buttons, 4-3P choppers, 5-1P choppers, 6- wire casings, 7-
220V/DC245A Switching Power Supplies, 8- auxiliary reclays, 9- time-delay relays, 10- connecting terminal blocks, 11- temperature sensors, 12-
Zero-emission, 13- thermorelays, 14- catalysts, 15- converters.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is further described.
As Figure 1-Figure 4, this utility model embodiment provides a kind of pump and drives biphase compound-refrigerating unit monitoring system
System, the system is for the monitoring and control to data center module compound air-conditioning system.The monitoring system includes touch screen 1, control
Device 2 and converter 15,；Their effect is respectively：Monitoring system ruuning situation, the compound unit operational mode of control, and to pressure
The operating frequency of contracting machine, working medium pump and blower fan is adjusted.Remaining part in system is then serviced to realize above-mentioned effect.
The effect of 3P choppers 4 is powered for whole compound-refrigerating unit, and the system contains six 3P choppers 4 altogether, point
Be not main breaker, compressor chopper, working medium pump chopper, indoor fan chopper, 1# outdoor fan choppers, outside 2# rooms
Blower break device.And the effect of 1P choppers 5 is powered for control system secondary circuit, the system contains two 1P choppers altogether
5, it is 220V/DC24V5A Switching Power Supplies chopper and secondary circuit chopper respectively.Main breaker is total equivalent to whole unit
On and off switch, after opening main breaker, unit is powered, after opening remaining 5 3P chopper such as compressor, working medium pump, corresponding portion
Part is powered, and each part can be operated according to the control logic of system.After opening secondary circuit chopper, secondary system loop
It is powered, controller 2 is powered and runs, and auxiliary reclay 8, time-delay relay 9, catalyst 14 etc. are powered, signal execution can be received
Break-make.After opening 220V/DC24V5A Switching Power Supply choppers, 220V/DC24V 5A Switching Power Supplies 7 are powered, and Switching Power Supply 7 is led to
After electricity, touch screen 1 is powered and runs.
After system energization operation, temperature sensor 11 receives outdoor temperature signal, indoor temperature signal and condenser and goes out
After mouth temperature signal, by this signal transmission to controller 2, controller 2 has 4, is outdoor temperature controller, 2 rooms respectively
Interior temperature controller and condensator outlet temperature controller.
After controller 2 receives temperature signal, whether outdoor temperature controller determines fortune according to outdoor temperature less than 15 DEG C
Row is which kind of mode of operation, during less than 15 DEG C, opens working medium pump circulation pattern, otherwise opens compressor cycle pattern；2 Indoor Temperatures
Degree controller deviates the degree of indoor target temperature value exporting the current signal of 4～20mA according to indoor temperature, controls respectively
The frequency of two converters 15, in addition, when indoor temperature is less than 22 DEG C, indoor low temperature is reported to the police, indoor temperature controller is given
Alarm signal, when indoor temperature is higher than 28 DEG C, indoor high temperature alarm, indoor temperature controller provide alarm signal；Condenser
Difference of the outlet temperature controller according to condensator outlet temperature, determines the unlatching number of units of outdoor fan.
Converter 15 includes indoor fan converter and compressor ＆ working medium pump converters, and 2 converters 15 receive 2 respectively
The current signal that platform indoor temperature controller is given, and frequency size is adjusted accordingly, indoor fan converter is to control interior
The rotating speed of blower fan, compressor working medium pump converter is to control the rotating speed of compressor and working medium pump, compressor and working medium pump operation
Condition is different, therefore in the outfan of compressor ＆ working medium pump converters, is designed with the interlocking of compressor and working medium pump, to ensure
The two will not run simultaneously.
The alarm signal that auxiliary reclay 8 can be given according to controller 2 is powered or is disconnected.The system contains 8 altogether
Individual auxiliary reclay 8, be respectively compressor ＆ working medium pump converter relays, indoor fan converter relay, indoor low temperature after
Electrical equipment, indoor high temperature relay, working medium pump relay, compressor relay, working medium pump circuit electromagnetic valve relay and compressor
Circuit electromagnetic valve relay.After two converter relay powers, converter must electrically activate signaling point connection, converter obtain it is electric after
Can operate；After two solenoid relay valves are powered, the solenoid valves operation of machine set compressor and working medium pump is combined；Working medium pump
After relay and compressor relay is powered, current signal is delivered to into catalyst 14,14 action of catalyst is made --- in herein
Between the effect of relay 8 mainly protect controller 2, it is to avoid controller 2 may when directly transmitting current signal to catalyst 14
The overcurrent damage for causing；After indoor low temperature relay power, respective switch action, compressor, working medium pump and outdoor fan stop
Operating；After indoor high temperature relay power, outdoor temperature height is ignored in respective switch action, and working medium pump stalling, compressor are opened
Open, compound unit switches to compressor cycle pattern by force.
Catalyst 14 has 4, is compressor catalyst, working medium pump catalyst, 1# outdoor fans catalyst and 2# respectively
Outdoor fan catalyst, after catalyst 14 receives current signal, can perform break-make by signal accordingly：Compressor catalyst and working medium
After pump catalyst receives the current signal of auxiliary reclay 8, corresponding interlock switch action, it is ensured that compressor and working medium pump are not
Can run simultaneously；After 2 outdoor fan catalysts are connected, corresponding outdoor fan is electrically energized operating.
Thermorelay 13 has 2, corresponds to 2 outdoor fan catalysts respectively, and its effect is to protect compound unit
Part (here refers in particular to outdoor fan) will not be because of overcurrent damage.Compressor and working medium pump are driven by converter 15,15, converter
Body just contains overcurrent protection function, therefore is not required to connect thermorelay 13 after compressor catalyst and working medium pump catalyst.
Time-delay relay 9 has 3, is that working medium pump time-delay relay, compressor time-delay relay and compressor are returned respectively
Way solenoid valve time-delay relay, effect are the unlatchings of the corresponding component in compound unit mode of operation handover delay, it is ensured that system
Safety and stablization.
Above-mentioned all of control logic, finally will implement on compound-refrigerating unit, be required for control system with it is compound
Line is carried out between unit, and the effect of connecting terminal block 10 is exactly an interface to be provided for connection therebetween.Terminals
Many binding posts are included on son row 10, compressor ＆ working medium pump frequency converter terminals, indoor fan is followed successively by from left to right and is connect
Line terminals, 1# outdoor fan binding posts, 2# outdoor fan binding posts, outdoor temperature sensor binding post, 2 Indoor Temperatures
Degree sensor wire terminal, condensator outlet temperature sensor terminal, 3 working medium pump circuit electromagnetic valve binding posts, 3
Compressor loop electromagnetic valve binding post and band lamp locking press button terminal.
Communication relations are established between touch screen 1 and controller 2, converter 15, after system energization operation, touch screen 1 can
With the parameters and numerical value in Read Controller 2 and converter 15 and including on screen, its effect is monitoring system
Ruuning situation, and the abnormal conditions to occurring in system operation report to the police.
The above, is only the preferably feasible embodiment of this utility model, it is impossible to therefore limit to power of the present utility model
Sharp scope, for those familiar with ordinary skill in the art, such as with the technical solution of the utility model and technology design
Make other various corresponding changes and deformation should all belong within this utility model scope of the claims.
Claims (9)
1. a kind of pump drives biphase compound-refrigerating unit monitoring system, it is characterised in that：
Temperature sensor (11) is connected on the signal input point of controller (2), for sensing temperature signal；Controller (2) is reported to the police
Signal output point connects the catalyst (14) of auxiliary reclay (8) input and outdoor fan, controller (2) control signal output point
Converter (15) control signal receiving point is connect, controller (2) communication signal point and converter (15) communication signal point connect touch screen
(1) communication signal point；Auxiliary reclay (8) output termination converter (15) must electrically activate signaling point, working medium pump circuit electromagnetic valve,
The time-delay relay (9) of the time-delay relay (9), working medium pump and compressor of compressor loop electromagnetic valve；Compressor loop electromagnetism
Time-delay relay (9) outfan of time-delay relay (9) the output termination compressor loop electromagnetic valve of valve, working medium pump and compressor
The catalyst (14) of working medium pump and compressor is connect respectively；
Converter (15) has two, and the power output of the converter (15.1) of indoor fan terminates indoor fan, working medium pump and pressure
The power output termination working medium pump of the converter (15.2) of contracting machine and connecing for the catalyst (14) of compressor, working medium pump and compressor
Tentaculum (14) is interlocked, and while outfan is connected to working medium pump and compressor respectively, is connected to jointly the catalyst of outdoor fan
(14), the output termination outdoor fan of the catalyst (14) of outdoor fan；
Each part constitutes whole control system according to above-mentioned connection order, and temperature sensor (11) senses outdoor temperature t respectively1, room
Interior temperature t2With condensator outlet temperature platform temperature t3, and these temperature signals are passed to into controller (2), controller (2) is divided into
Indoor temperature controller (2.1), outdoor temperature controller (2.2) and condensator outlet temperature controller (2.3), correspondence above-mentioned two
Platform converter (15), indoor temperature controller (2.1) number of units are also two, to realize the control to two converters (15) respectively
System；Controller (2) sends different alarm for the size of each temperature signal, performs different operations to being combined unit：t1
During ＜ a DEG C, working medium pump circulation is opened；t1When >=a DEG C, compressor cycle is opened；t3When≤d DEG C, an outdoor fan, t are closed3
When≤e DEG C, two outdoor fans are closed, above-mentioned a, d and e are the numerical value of different outdoor temperatures, and a ＞ d ＞ e；t2When≤b DEG C,
Close compressor, working medium pump and outdoor fan；t2When >=c DEG C, working medium pump circulation is closed by force, compressor cycle, above-mentioned b is opened
It is different indoor temperature numerical values with c, and c ＞ b；Receivep, b ＜ tp
＜ c, according to t2Relative to target temperature tpDeparture degree send control signal, control the output frequency of converter (15)；
Touch screen (1) and converter (15), are connected by connection and are communicated between touch screen (1) and controller (2), and
The real time data of the two and parameter are reflected on touch screen (1)；
When the quantity of converter (15) changes, the quantity of controller (2) is also changed therewith, converter (15)
There is corresponding relation with the quantity of controller (2).
2. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described is compound
Unit refers to pump driving/steam compression type compound-refrigerating unit, and compound unit includes two kinds of dynamical elements of working medium pump and compressor,
Every kind of dynamical element can multiple stage parallel running, wherein one to multiple adopts variable frequency adjustment, remaining each is adjusted using start-stop, is become
Frequency modulation section is realized that by converter (15) start-stop is adjusted to be realized by the alarm point on controller (2)；Exist between two kinds of dynamical elements
One or more switch condition, reaches switch condition, and dynamical element performs corresponding start-stop；The closed circuit form of dynamical element is not
Limit, shares one group of indoor and outdoor blower fan.
3. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described control
Device (2) is the temperature controller or PLC devices that can receive temperature signal output control signal.
4. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described temperature
Sensor (11) is T-shaped thermocouple, Pt100 thermal resistances or Cu100 thermal resistances.
5. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described touch
Screen (1) and controller (2), the communication between touch screen (1) and converter (15) use Modbus RTU communications protocol, three portions
RS485 interfaces are designed with part.
6. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described warning
Signal is sent by the alarm point on controller (2), and response mode is divided into upper limit alarm and lower limit is reported to the police.
7. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described interlocking
Realized by the normally-closed contact of two catalysts (14), the controller (2) for receiving outdoor temperature signal sends start and stop corresponding component
During signal, two catalysts (14) of correspondence compressor and working medium pump can receive signal adhesive, and arbitrary catalyst in two
(14), after adhesive, in loop, corresponding normally-closed contact disconnects, it is ensured that another cannot adhesive so that compressor and working medium pump are only
There is one can obtain electric.
8. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described reception
The controller (2) of condensator outlet temperature signal wants start and stop outdoor fan, needs to be realized by two catalysts (14), receives control
During the signal of the start and stop outdoor fan that device (2) processed is given, the adhesive of corresponding catalyst (14), electric operation on outdoor fan；Meanwhile,
The catalyst (14) of the compressed machine of catalyst (14) and working medium pump of outdoor fan is limited, only contact of the compressor with working medium pump
In device (14) during any one adhesive, the catalyst (14) of outdoor fan can receive the signal that controller (2) is provided.
9. pump according to claim 1 drives biphase compound-refrigerating unit monitoring system, it is characterised in that：Described communication
Line adopts Shielded Twisted Pair communication cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621066992.9U CN206073379U (en) | 2016-09-20 | 2016-09-20 | A kind of pump drives biphase compound-refrigerating unit monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621066992.9U CN206073379U (en) | 2016-09-20 | 2016-09-20 | A kind of pump drives biphase compound-refrigerating unit monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206073379U true CN206073379U (en) | 2017-04-05 |
Family
ID=58439773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621066992.9U Withdrawn - After Issue CN206073379U (en) | 2016-09-20 | 2016-09-20 | A kind of pump drives biphase compound-refrigerating unit monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206073379U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322694A (en) * | 2016-09-20 | 2017-01-11 | 北京工业大学 | Monitoring system for pump driving two-phase composite refrigerating unit |
| CN109737040A (en) * | 2018-11-29 | 2019-05-10 | 珠海市奥吉赛科技有限公司 | Integrated-type medical negative pressure of vacuum electrical-mechanical control system and its electric control method |
-
2016
- 2016-09-20 CN CN201621066992.9U patent/CN206073379U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106322694A (en) * | 2016-09-20 | 2017-01-11 | 北京工业大学 | Monitoring system for pump driving two-phase composite refrigerating unit |
| CN106322694B (en) * | 2016-09-20 | 2022-03-04 | 北京工业大学 | Pump-driven two-phase composite refrigerating unit monitoring system |
| CN109737040A (en) * | 2018-11-29 | 2019-05-10 | 珠海市奥吉赛科技有限公司 | Integrated-type medical negative pressure of vacuum electrical-mechanical control system and its electric control method |
| CN109737040B (en) * | 2018-11-29 | 2020-06-05 | 珠海市奥吉赛科技有限公司 | Integrated medical vacuum negative-pressure machine electrical control system and electrical control method thereof |
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