CN108662798A - Water chilling unit and control method and device thereof - Google Patents
Water chilling unit and control method and device thereof Download PDFInfo
- Publication number
- CN108662798A CN108662798A CN201810645572.3A CN201810645572A CN108662798A CN 108662798 A CN108662798 A CN 108662798A CN 201810645572 A CN201810645572 A CN 201810645572A CN 108662798 A CN108662798 A CN 108662798A
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- Prior art keywords
- bypass
- increment
- regulator valve
- adjustment
- chilling units
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000007710 freezing Methods 0.000 claims abstract description 49
- 230000008014 freezing Effects 0.000 claims abstract description 49
- 239000000498 cooling water Substances 0.000 claims abstract description 3
- 238000012545 processing Methods 0.000 claims description 10
- 238000005070 sampling Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 abstract description 10
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000004378 air conditioning Methods 0.000 abstract 1
- 238000007405 data analysis Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/04—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type
- F25B1/053—Compression machines, plants or systems with non-reversible cycle with compressor of rotary type of turbine type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2501—Bypass valves
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a water chilling unit and a control method and device thereof. Wherein, this cooling water set includes: the bypass pipeline is used for leading the exhaust gas at the high-pressure side of the compressor to the suction gas at the low-pressure side of the compressor; the bypass regulating valve is arranged on the bypass pipeline and used for regulating the gas flow passing through the bypass pipeline; and the controller is used for acquiring the freezing outlet water temperature of the evaporator, determining an adjustment increment according to the freezing outlet water temperature and a preset target temperature, and controlling the opening of the bypass adjusting valve according to the adjustment increment. According to the invention, data used by a system user can be rapidly and completely collected, and the using effect of the air conditioning system can be conveniently and rapidly evaluated through big data analysis.
Description
Technical field
The present invention relates to machine set technology fields, in particular to a kind of handpiece Water Chilling Units and its control method, device.
Background technology
For centrifugal refrigerating machines, due to characteristics such as its surges, it is difficult to be unloaded to stable operation under underload.Heat
Gas bypass is to control a kind of common economic means of centrifugal refrigerating machines cold, by hot-gas bypass by compressor high-pressure side
Exhaust is led at compressor low-pressure side air-breathing so that and the gas of bypass is not involved in system circulation, to reduce unit operation load,
Achieve the purpose that widen unit operation range.
In practice, it will usually bypass solenoid valve is arranged in bypass line in selection, is acted by the opened/closed of solenoid valve,
To realize that unlatching/closing hot-gas bypass, a bypass part are not involved in the refrigerant of cycle to achieve the purpose that adjust load.But this
Kind control method has the following problems：
1) bypass solenoid valve only has the function of opened/closed, can only bypass the refrigerant gas of particular flow rate, unit load
It is down or up that cliff of displacement formula occurs in moment, without continuously adjusting burden functional；
2) load bypassed is more than realistic objective demand load, and compressor loads are run at this time, compressor after load operating
Load is more than target requirement load again, and compressor then unloads operation, opens bypass solenoid valve, so repeats the above action, lead
Cause high frequent that unloading, hot-gas bypass is added frequently to open closure.
For how to realize the problem of unit hot-gas bypass amount is continuously precisely adjusted in the prior art, not yet propose have at present
The solution of effect.
Invention content
A kind of handpiece Water Chilling Units and its control method, device are provided in the embodiment of the present invention, with solve in the prior art how
Realize the problem of unit hot-gas bypass amount is continuously precisely adjusted.
In order to solve the above technical problems, the present invention provides a kind of handpiece Water Chilling Units, wherein the handpiece Water Chilling Units include：Bypass
Pipeline, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；Bypass regulator valve is arranged in the bypass pipe
On the road, it is used to adjust the gas flow by the bypass line；Controller, the freezing leaving water temperature for obtaining evaporator,
Increment of adjustment is determined according to the freezing leaving water temperature and pre-set target temperature, and controlling the bypass according to the increment of adjustment adjusts
Save the aperture of valve.
Further, the handpiece Water Chilling Units further include：The freezing water outlet in the evaporator is arranged in temperature sensor,
The freezing leaving water temperature is sent to controller by the freezing leaving water temperature for monitoring the evaporator within the sampling period.
Further, the controller is additionally operable to carry out PID to the freezing leaving water temperature and the pre-set target temperature
Algorithm process, adjusted increment；In the case where the increment of adjustment is more than zero, the aperture for controlling the bypass regulator valve increases
Add, minus in the increment of adjustment, the aperture for controlling the bypass regulator valve is reduced.
Further, the handpiece Water Chilling Units further include：Condenser, the bypass regulator valve are located at the condenser and described
Between evaporator.
Further, the bypass regulator valve is bypass regulation ball valve.
The present invention also provides a kind of control methods of handpiece Water Chilling Units, wherein this method includes：Obtain the freezing of evaporator
Leaving water temperature；Increment of adjustment is determined according to the freezing leaving water temperature and pre-set target temperature；It is controlled according to the increment of adjustment
The aperture of bypass regulator valve；Wherein, the bypass regulator valve is arranged on the bypass line of the handpiece Water Chilling Units.
Further, the freezing leaving water temperature of evaporator is obtained, including：Within the sampling period, supervised by temperature sensor
Survey the freezing leaving water temperature of the evaporator；Wherein, the freezing water outlet in the evaporator is arranged in the temperature sensor.
Further, increment of adjustment is determined according to the freezing leaving water temperature and pre-set target temperature, including：To described cold
Freeze leaving water temperature and the pre-set target temperature carries out pid algorithm processing, adjusted increment.
Further, the aperture of bypass regulator valve is controlled according to the increment of adjustment, including：Judging the increment of adjustment is
It is no to be more than zero；If it is, the aperture for controlling the bypass regulator valve increases；If it is not, then controlling the bypass regulator valve
Aperture is reduced.
The present invention also provides a kind of control devices of handpiece Water Chilling Units, wherein the device includes：Acquisition module, for obtaining
Take the freezing leaving water temperature of evaporator；Processing module is adjusted for being determined according to the freezing leaving water temperature and pre-set target temperature
Save increment；Control module, the aperture for controlling bypass regulator valve according to the increment of adjustment；Wherein, the bypass regulator valve
It is arranged on the bypass line of the handpiece Water Chilling Units.
It applies the technical scheme of the present invention, by introducing bypass regulator valve in bypass line, introduces the increment control algorithm sides PID
Method adjusts the hot-gas bypass amount of bypass line, achievees the purpose that unit hot-gas bypass amount automatic adjusument.
Description of the drawings
Fig. 1 is the hardware architecture diagram of handpiece Water Chilling Units according to the ... of the embodiment of the present invention；
Fig. 2 is the control method flow chart of handpiece Water Chilling Units according to the ... of the embodiment of the present invention；
Fig. 3 is the continuous control flow chart of hot-gas bypass according to the ... of the embodiment of the present invention；
Fig. 4 is the structure diagram of the control device of handpiece Water Chilling Units according to the ... of the embodiment of the present invention.
Specific implementation mode
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, it should be understood that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
In subsequent description, using for indicating that the suffix of such as " module ", " component " or " unit " of element is only
The explanation for being conducive to the present invention, itself does not have a specific meaning.Therefore, " module ", " component " or " unit " can mix
Ground uses.
Embodiment one
Referring to Fig. 1, a kind of hardware architecture diagram of its handpiece Water Chilling Units of each embodiment to realize the present invention, this is cold
Water dispenser group may include：The components such as bypass line, bypass regulator valve 5 and controller 7 can also include：Compressor 1, condensation
Device 2, throttle valve 3, evaporator 4, temperature sensor 6.It will be understood by those skilled in the art that handpiece Water Chilling Units knot shown in Fig. 1
Structure does not constitute the restriction to handpiece Water Chilling Units, and handpiece Water Chilling Units may include components more more or fewer than diagram, or combine certain
A little components or different components arrangement.
The all parts of handpiece Water Chilling Units are specifically introduced with reference to Fig. 1：
Bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；
Bypass regulator valve is arranged on bypass line, for adjusting the gas flow by bypass line；It is executable continuous
Aperture regulation,
Controller, the freezing leaving water temperature for obtaining evaporator are true according to freezing leaving water temperature and pre-set target temperature
Determine increment of adjustment, the aperture of bypass regulator valve is controlled according to increment of adjustment.
Above controller controls the operation of bypass regulator valve, and one or more components operation of control handpiece Water Chilling Units.
The controller can operate and execute control algolithm, so that it is determined that an increment of adjustment and the increment of adjustment is applied to bypass
Regulating valve.Above-mentioned bypass regulator valve executes the increment of adjustment of controller output with controller communication.
The present embodiment introduces PID increment control algorithm methods, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount automatic adjusument.
For more accurate monitoring temperature, in the present embodiment, above-mentioned handpiece Water Chilling Units can also include：Temperature sensing
The freezing water outlet in evaporator is arranged in device, and the freezing leaving water temperature for monitoring evaporator within the sampling period will freeze out
Coolant-temperature gage is sent to controller.It should be noted that the freezing leaving water temperature of evaporator not only can be by being arranged in evaporator
Freezing water outlet temperature sensor monitors, can also obtain by other means, such as independently of the independent of handpiece Water Chilling Units
Temperature sensor.No matter which kind of mode is taken, as long as accurately freezing leaving water temperature can be provided device in order to control.
In handpiece Water Chilling Units shown in Fig. 1, the high temperature and high pressure gas of compressor discharge reaches condenser by exhaust pipe, cold
Condenser bottom is condensed into the liquid of cryogenic high pressure, passes through two-phase gas-liquid of the throttle valve throttling at low-pressure low-temperature later, into evaporation
Device evaporates, and low-pressure gas returns to compressor.When there is underload demand, bypass regulator valve is opened, opening for bypass regulator valve is adjusted
Degree, by continuously adjusting the gas flow of bypass line refrigerant, achievees the purpose that spatial load forecasting.
Above controller is specifically used for carrying out pid algorithm processing to freezing leaving water temperature and pre-set target temperature, be adjusted
Save increment；In the case where increment of adjustment is more than zero, the aperture for controlling bypass regulator valve increases, in the minus feelings of increment of adjustment
Under condition, the aperture for controlling bypass regulator valve is reduced.Increasing and decreasing for bypass regulator valve aperture can according to a certain percentage gradually
Adjustment.Bypass regulator valve is controlled by PID delta algorithms, and for PID since its algorithm is simple, robustness is good and reliability is high, extensive
Applied to industrial stokehold.Based on this, automatic adjusument can be carried out to the aperture of bypass regulator valve.Side in the present embodiment
Logical regulating valve is between condenser and evaporator, can be bypass regulation ball valve, as shown in fig. 1 specifically.
Embodiment two
Based on the handpiece Water Chilling Units of above-described embodiment introduction, a kind of control of handpiece Water Chilling Units is introduced below by preferred embodiment
Method.
Fig. 2 is the control method flow chart of handpiece Water Chilling Units according to the ... of the embodiment of the present invention, as shown in Fig. 2, this method includes
Following steps：
Step S201 obtains the freezing leaving water temperature of evaporator；
Step S202 determines increment of adjustment according to freezing leaving water temperature and pre-set target temperature；
Step S203 controls the aperture of bypass regulator valve according to increment of adjustment；Wherein, bypass regulator valve is arranged in cooling-water machine
On the bypass line of group.
The present embodiment introduces PID increment control algorithm methods, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount automatic adjusument.
For how to obtain freezing leaving water temperature, a kind of preferred embodiment is present embodiments provided, i.e., in the sampling period
It is interior, pass through the freezing leaving water temperature of temperature sensor monitors evaporator；Wherein, temperature sensor can be arranged in the cold of evaporator
Freeze water outlet, it can also be independently of handpiece Water Chilling Units, as long as being capable of accurate measurements freezing leaving water temperature.
After determining freezing leaving water temperature, pid algorithm processing is carried out to freezing leaving water temperature and pre-set target temperature, is obtained
To increment of adjustment.For PID since its algorithm is simple, robustness is good and reliability is high, is widely used in industrial stokehold.It is based on
This, can carry out automatic adjusument to the aperture of bypass regulator valve.
Later, the aperture that bypass regulator valve is controlled according to increment of adjustment, specifically includes：Judge whether increment of adjustment is more than
Zero；If it is, the aperture of control bypass regulator valve increases；If it is not, then the aperture of control bypass regulator valve is reduced.Specific
When implementation, the division of numberical range can be carried out to increment of adjustment, each range corresponds to the opening size of bypass regulator valve, from
And increment of adjustment and the correspondence of aperture can be followed, more accurately carry out the adaptive adjustment of bypass regulator valve.
Fig. 3 is the continuous control flow chart of hot-gas bypass according to the ... of the embodiment of the present invention, as shown in figure 3, the flow includes
Following steps：
Step S301 sets the pre-set target temperature value of leaving water temperature；
Step S302, temperature sensor detects current freezing leaving water temperature value, and is supplied to controller；
Step S303, controller carry out pid algorithm processing to pre-set target temperature value and current freezing leaving water temperature value；
Step S304, controller export increment of adjustment；
Step S305, judges whether increment of adjustment is more than zero；If so, S306 is thened follow the steps, if it is not, then executing step
Rapid S307.
Step S306, increment of adjustment are more than zero, and the execution aperture for bypassing regulation ball valve increases；
Step S307, increment of adjustment are less than zero, and the execution aperture for bypassing regulation ball valve is reduced.
So cycle executes above-mentioned flow.
The present embodiment by the above process, achievees the purpose that continuously adjust hot-gas bypass amount.
Corresponding to the control method of the handpiece Water Chilling Units of Fig. 2 introductions, a kind of control dress of handpiece Water Chilling Units is present embodiments provided
It sets, the structure diagram of the control device of handpiece Water Chilling Units as shown in Figure 4, which includes：
Acquisition module 10, the freezing leaving water temperature for obtaining evaporator；
Processing module 20 is connected to acquisition module 10, is adjusted for being determined according to freezing leaving water temperature and pre-set target temperature
Save increment；
Control module 30 is connected to processing module 20, the aperture for controlling bypass regulator valve according to increment of adjustment；Its
In, above-mentioned bypass regulator valve is arranged on the bypass line of handpiece Water Chilling Units.
The present embodiment introduces PID increment control algorithm methods, adjusts bypass line by introducing bypass regulator valve in bypass line
Hot-gas bypass amount, achieve the purpose that unit hot-gas bypass amount is adaptively precisely adjusted.
From the above description it is found that the essential core point of the present invention is：Hot gas is continuously adjusted in order to effectively realize
Bypass amount, by introducing electrical ball valve in bypass line.When reaching hot-gas bypass unlocking condition, bypass regulation ball valve is by PID
Delta algorithm controls, and within the constant sampling period, the leaving water temperature desired value of leaving water temperature and setting is freezed by sensing
Deviation calculates the increment of adjustment of output release valve ball, purpose is continuously adjusted to reach hot-gas bypass amount.
It should be noted that herein, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that process, method, article or device including a series of elements include not only those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or device institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including this
There is also other identical elements in the process of element, method, article or device.
The embodiments of the present invention are for illustration only, can not represent the quality of embodiment.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Based on this understanding, technical scheme of the present invention substantially in other words does the prior art
Going out the part of contribution can be expressed in the form of software products, which is stored in a storage medium
In (such as ROM/RAM, magnetic disc, CD), including some instructions are used so that a mobile terminal (can be mobile phone, computer, clothes
Be engaged in device, air conditioner or the network equipment etc.) execute method described in each embodiment of the present invention.
The embodiment of the present invention is described above in conjunction with figure, but the invention is not limited in above-mentioned specific realities
Mode is applied, the above mentioned embodiment is only schematical, rather than restrictive, and those skilled in the art exist
Under the enlightenment of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, many shapes can be also made
Formula, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of handpiece Water Chilling Units, which is characterized in that the handpiece Water Chilling Units include：
Bypass line, for leading to the exhaust of compressor high-pressure side at compressor low-pressure side air-breathing；
Bypass regulator valve is arranged on the bypass line, for adjusting the gas flow by the bypass line；
Controller, the freezing leaving water temperature for obtaining evaporator are true according to the freezing leaving water temperature and pre-set target temperature
Determine increment of adjustment, the aperture of the bypass regulator valve is controlled according to the increment of adjustment.
2. handpiece Water Chilling Units according to claim 1, which is characterized in that the handpiece Water Chilling Units further include：
The freezing water outlet in the evaporator is arranged, for monitoring the evaporator within the sampling period in temperature sensor
Leaving water temperature is freezed, the freezing leaving water temperature is sent to controller.
3. handpiece Water Chilling Units according to claim 1, which is characterized in that
The controller is additionally operable to carry out pid algorithm processing to the freezing leaving water temperature and the pre-set target temperature, obtain
Increment of adjustment；In the case where the increment of adjustment is more than zero, the aperture for controlling the bypass regulator valve increases, in the adjusting
In the case of increment is minus, the aperture for controlling the bypass regulator valve is reduced.
4. handpiece Water Chilling Units according to claim 1, which is characterized in that the handpiece Water Chilling Units further include：Condenser,
The bypass regulator valve is between the condenser and the evaporator.
5. handpiece Water Chilling Units according to claim 1, which is characterized in that the bypass regulator valve is bypass regulation ball valve.
6. a kind of control method of handpiece Water Chilling Units, which is characterized in that the method includes：
Obtain the freezing leaving water temperature of evaporator；
Increment of adjustment is determined according to the freezing leaving water temperature and pre-set target temperature；
The aperture of bypass regulator valve is controlled according to the increment of adjustment；Wherein, the bypass regulator valve is arranged in the cooling-water machine
On the bypass line of group.
7. according to the method described in claim 6, it is characterized in that, obtain evaporator freezing leaving water temperature, including：
Within the sampling period, pass through the freezing leaving water temperature of evaporator described in temperature sensor monitors；Wherein, the temperature sensing
The freezing water outlet in the evaporator is arranged in device.
8. according to the method described in claim 6, it is characterized in that, true according to the freezing leaving water temperature and pre-set target temperature
Determine increment of adjustment, including：
Pid algorithm processing, adjusted increment are carried out to the freezing leaving water temperature and the pre-set target temperature.
9. according to the method described in claim 6, it is characterized in that, controlling opening for bypass regulator valve according to the increment of adjustment
Degree, including：
Judge whether the increment of adjustment is more than zero；
If it is, the aperture for controlling the bypass regulator valve increases；
If it is not, then the aperture for controlling the bypass regulator valve is reduced.
10. a kind of control device of handpiece Water Chilling Units, which is characterized in that described device includes：
Acquisition module, the freezing leaving water temperature for obtaining evaporator；
Processing module, for determining increment of adjustment according to the freezing leaving water temperature and pre-set target temperature；
Control module, the aperture for controlling bypass regulator valve according to the increment of adjustment；Wherein, the bypass regulator valve setting
On the bypass line of the handpiece Water Chilling Units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645572.3A CN108662798A (en) | 2018-06-21 | 2018-06-21 | Water chilling unit and control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645572.3A CN108662798A (en) | 2018-06-21 | 2018-06-21 | Water chilling unit and control method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108662798A true CN108662798A (en) | 2018-10-16 |
Family
ID=63772262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810645572.3A Pending CN108662798A (en) | 2018-06-21 | 2018-06-21 | Water chilling unit and control method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108662798A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440411A (en) * | 2019-08-08 | 2019-11-12 | 珠海格力电器股份有限公司 | Refrigerant flow direction control method and device for improving unit reliability and unit |
| CN110822750A (en) * | 2019-12-11 | 2020-02-21 | 郑州长城科工贸有限公司 | Fluid temperature control system and control method based on cascade closed-loop PID regulation |
| CN113959126A (en) * | 2021-09-16 | 2022-01-21 | 青岛海尔空调电子有限公司 | Control method, device and equipment for refrigeration equipment and storage medium |
| CN114413457A (en) * | 2022-01-21 | 2022-04-29 | 清华大学 | Optimization control method and device for air conditioning system, electronic equipment and storage medium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440411A (en) * | 2019-08-08 | 2019-11-12 | 珠海格力电器股份有限公司 | Refrigerant flow direction control method and device for improving unit reliability and unit |
| CN110822750A (en) * | 2019-12-11 | 2020-02-21 | 郑州长城科工贸有限公司 | Fluid temperature control system and control method based on cascade closed-loop PID regulation |
| CN113959126A (en) * | 2021-09-16 | 2022-01-21 | 青岛海尔空调电子有限公司 | Control method, device and equipment for refrigeration equipment and storage medium |
| CN114413457A (en) * | 2022-01-21 | 2022-04-29 | 清华大学 | Optimization control method and device for air conditioning system, electronic equipment and storage medium |
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Application publication date: 20181016 |