CN105444482B - Water cooled chiller and its saving-energy operation control method - Google Patents
Water cooled chiller and its saving-energy operation control method Download PDFInfo
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- CN105444482B CN105444482B CN201510924883.XA CN201510924883A CN105444482B CN 105444482 B CN105444482 B CN 105444482B CN 201510924883 A CN201510924883 A CN 201510924883A CN 105444482 B CN105444482 B CN 105444482B
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- water
- cooled chiller
- temperature
- water cooled
- compressor
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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
- 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
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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
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0251—Compressor control by controlling speed with on-off operation
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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
- F25B2600/11—Fan speed control
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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
- F25B2600/13—Pump speed control
Abstract
The invention discloses a kind of water cooled chiller and its saving-energy operation control methods, the described method comprises the following steps: the chilled water leaving water temperature of real-time detection water cooled chiller；When the chilled water leaving water temperature of water cooled chiller is less than the first preset temperature, control water cooled chiller executes uninstall action, and judges the current loads of water cooled chiller；If the current loads of water cooled chiller are less than or equal to the minimum allowable operating load of water cooled chiller, the compressor shutdown in water cooled chiller is controlled, and close cooling water water pump and blower fan of cooling tower in water cooled chiller.This method can effectively avoid water cooled chiller from being frequent alarm shutdown, improve the reliability and service life of water cooled chiller, while reducing energy waste, reduce customer using cost, improve user experience.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to the saving-energy operation control method of a kind of water cooled chiller and
A kind of water cooled chiller.
Background technique
In general, if customer charge is smaller, it is low often to there is chilled water leaving water temperature during operation of air conditioner
In target temperature set by user.
In the related technology, when chilled water leaving water temperature is lower than target temperature set by user, and unit is had reached most
When underload, unit is controlled with minimum load operation, until unit error protection is shut down.Which will cause the frequent failure of unit
Alarm is shut down, and greatly reduces user experience, and cause energy waste.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of saving-energy operation control method of water cooled chiller, effectively water cooled chiller can be avoided to go out
Now frequently alarm is shut down, and is improved the reliability and service life of water cooled chiller, while reducing energy waste, is reduced
Customer using cost improves user experience.
It is another object of the present invention to propose a kind of water cooled chiller.
To achieve the above object, one aspect of the present invention embodiment proposes a kind of saving-energy operation control of water cooled chiller
Method, comprising the following steps: S1, the chilled water leaving water temperature of water cooled chiller described in real-time detection；S2, when the water cooling is cold
When the chilled water leaving water temperature of water dispenser group is less than the first preset temperature, controls the water cooled chiller and execute uninstall action, and
The current loads of the water cooled chiller are judged；S3, if the current loads of the water cooled chiller be less than or
Equal to the minimum allowable operating load of the water cooled chiller, then the compressor shutdown in the water cooled chiller is controlled,
And close cooling water water pump and blower fan of cooling tower in the water cooled chiller.
The saving-energy operation control method of the water cooled chiller of the embodiment of the present invention, when the chilled water of water cooled chiller goes out
Coolant-temperature gage is less than the first preset temperature, and the current loads of water cooled chiller are less than or equal to the minimum of water cooled chiller
When allowing operating load, the compressor shutdown in water cooled chiller is controlled, and close the cooling water water in water cooled chiller
Pump and blower fan of cooling tower, effectively prevent when customer charge is smaller, and water cooled chiller is constantly in minimum load operation
When state caused water cooled chiller frequently alarm shutdown, energy waste the problem of, to improve user experience, reduce
Customer using cost, while improving the reliability and service life of water cooled chiller.
According to one embodiment of present invention, after step s 3, further includes: water cooled chiller described in real-time detection
Chilled water return water temperature, and according to the temperature rise of the chilled water return water temperature of water cooled chiller calculating chilled water return water temperature
Change rate；When the temperature rise change rate of the chilled water return water temperature is less than default change rate, if the water cooled chiller
Chilled water return water temperature go back up to compressor and restart preset temperature, then control the compressor and restart, and described in opening
Cooling water water pump and blower fan of cooling tower.
According to one embodiment of present invention, when the chilled water return water temperature of the water cooled chiller is less than the compression
When machine restarts preset temperature, if the temperature rise change rate of the chilled water return water temperature is greater than or equal to the default variation
Rate then controls the compressor and restarts, and opens the cooling water water pump and blower fan of cooling tower.
According to one embodiment of present invention, after the compressor is restarted, the water cooled chiller is also controlled
Restart strategy execution according to that can adjust and add uninstall action.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of water cooled chiller, comprising: compression
Machine；Cooling water water pump；Blower fan of cooling tower；First temperature detecting module, first temperature detecting module are used for real-time detection institute
State the chilled water leaving water temperature of water cooled chiller；Control module, the control module are used in the water cooled chiller
The water cooled chiller is controlled when chilled water leaving water temperature is less than the first preset temperature and executes uninstall action, and to the water cooling
The current loads of water cooler are judged, and are less than or equal to the water cooling in the current loads of the water cooled chiller
When the minimum allowable operating load of water cooler, the control module controls the compressor shutdown, and closes the cooling water
Water pump and blower fan of cooling tower.
The water cooled chiller of the embodiment of the present invention, when the chilled water leaving water temperature of water cooled chiller is default less than first
Temperature, and the current loads of water cooled chiller be less than or equal to water cooled chiller minimum allowable operating load when, control
Molding block controls the compressor shutdown in water cooled chiller, and closes cooling water water pump and cooling tower in water cooled chiller
Blower is effectively prevented when customer charge is smaller, and when water cooled chiller is constantly in minimum load operation state causes
Water cooled chiller frequently alarm shutdown, energy waste the problem of, to improve user experience, reduce user's use at
This, while improving the reliability and service life of water cooled chiller.
According to one embodiment of present invention, above-mentioned water cooled chiller, further includes: second temperature detection module, institute
State chilled water return water temperature of the second temperature detection module for water cooled chiller described in real-time detection, wherein the control
Module calculates the temperature rise change rate of chilled water return water temperature according to the chilled water return water temperature of the water cooled chiller, and in institute
Compressor shutdown is stated and after the cooling water water pump and blower fan of cooling tower close, if the temperature of the chilled water return water temperature
Rise change rate be less than default change rate and the water cooled chiller chilled water return water temperature go back up to compressor restart it is pre-
If temperature, the control module controls the compressor and restarts, and opens the cooling water water pump and blower fan of cooling tower.
According to one embodiment of present invention, in the compressor shutdown and the cooling water water pump and blower fan of cooling tower
After closing, if the chilled water return water temperature of the water cooled chiller is less than the compressor and restarts preset temperature and institute
The temperature rise change rate for stating chilled water return water temperature is greater than or equal to the default change rate, and the control module controls the compression
Machine is restarted, and opens the cooling water water pump and blower fan of cooling tower.
According to one embodiment of present invention, after the compressor is restarted, described in the control module also controls
Water cooled chiller restarts strategy execution and adds uninstall action according to can adjust.
According to one embodiment of present invention, the first temperature detecting module setting is steamed in the water cooled chiller
Send out the water outlet of device.
According to one embodiment of present invention, the second temperature detection module setting is steamed in the water cooled chiller
Send out the water inlet of device.
Detailed description of the invention
Fig. 1 is the flow chart of the saving-energy operation control method of water cooled chiller according to an embodiment of the present invention.
Fig. 2 is the block diagram of water cooled chiller according to an embodiment of the present invention.
Fig. 3 is the block diagram of water cooled chiller according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
Below with reference to the accompanying drawings the saving-energy operation control side of the water cooled chiller proposed according to embodiments of the present invention described
Method and water cooled chiller.
Fig. 1 is the flow chart of the saving-energy operation control method of water cooled chiller according to an embodiment of the present invention.Such as Fig. 1 institute
Show, the saving-energy operation control method of the water cooled chiller the following steps are included:
S1, the chilled water leaving water temperature of real-time detection water cooled chiller.
Specifically, it can be examined in real time by the way that the temperature sensor of the water outlet of evaporator in water cooled chiller is arranged in
Survey chilled water leaving water temperature.
S2 controls water cooled chiller when the chilled water leaving water temperature of water cooled chiller is less than the first preset temperature
Uninstall action is executed, and the current loads of water cooled chiller are judged.Wherein, the first preset temperature is water cooling cooling-water machine
Corresponding temperature value when group needs to unload, for example, the first preset temperature can be target temperature set by user and preset temperature
Spend the difference of deviation threshold.
S3, if the minimum allowable operation that the current loads of water cooled chiller are less than or equal to water cooled chiller is negative
Lotus then controls the compressor shutdown in water cooled chiller, and closes cooling water water pump and cooling tower in water cooled chiller
Blower.
Specifically, in water cooled chiller operational process, real-time detection chilled water leaving water temperature simultaneously judges it.
If chilled water leaving water temperature is greater than the second preset temperature, controls water cooled chiller and execute loading action, wherein second is pre-
If temperature is corresponding temperature value when water cooled chiller needs to load, for example, the second preset temperature can be set by user
The sum of target temperature and preset temperature deviation threshold value；If chilled water leaving water temperature controls water less than the first preset temperature
Cold water cooler executes uninstall action, and judges whether the current loads of water cooled chiller are minimum allowable operating load.Such as
Fruit current loads is minimum allowable operating loads and chilled water leaving water temperature is less than the first preset temperature, then control compressor and stop
Machine, and cooling water water pump and blower fan of cooling tower are closed, it effectively prevents when customer charge is smaller, and water cooled chiller is always
When in minimum load operation state caused water cooled chiller frequently alarm shutdown, energy waste the problem of, improve use
Family experience, reduces customer using cost, while improving the reliability and service life of water cooled chiller.
According to one embodiment of present invention, after step s 3, the saving-energy operation control of above-mentioned water cooled chiller
Method further include: the chilled water return water temperature of real-time detection water cooled chiller, and returned according to the chilled water of water cooled chiller
The temperature rise change rate of coolant-temperature gage calculating chilled water return water temperature；When the temperature rise change rate of chilled water return water temperature is less than default variation
When rate, if the chilled water return water temperature of water cooled chiller, which goes back up to compressor, restarts preset temperature, compressor is controlled
Restart, and opens cooling water water pump and blower fan of cooling tower.Wherein, chilled water return water temperature can be by being arranged in water cooling cold water
The temperature sensor of the water inlet of evaporator, which detects, in unit obtains.Default change rate and compressor restart preset temperature can
To be demarcated according to the actual situation.
According to one embodiment of present invention, when the chilled water return water temperature of water cooled chiller is restarted less than compressor
When preset temperature, if the temperature rise change rate of chilled water return water temperature is greater than or equal to default change rate, compressor is controlled again
Starting, and open cooling water water pump and blower fan of cooling tower.
Specifically, it is contemplated that in the related technology when chilled water leaving water temperature is lower than target temperature set by user, and machine
When group has reached minimum load, the compressor shutdown in unit is controlled, and meet compressor again in chilled water leaving water temperature
After the condition of starting, compressor start is controlled.Although which can prevent unit, frequent fault alarm is shut down, if
Compressor restarts preset temperature and the too small high frequent start and stop that will lead to is arranged；It is set if compressor restarts preset temperature
Set it is excessive will lead in a period of time that chilled water leaving water temperature is excessively high, influence user's comfort.
For this purpose, in an embodiment of the present invention, in control compressor shutdown, and closing cooling water water pump and blower fan of cooling tower
Afterwards, real-time detection chilled water return water temperature and it is judged.If the temperature rise change rate of chilled water return water temperature is less than pre-
If change rate, and chilled water return water temperature is higher than compressor and restarts preset temperature or chilled water return water temperature less than compression
Machine restarts preset temperature, and the temperature rise change rate of chilled water return water temperature is greater than or equal to default change rate, then controls compression
Machine is restarted, and opens cooling water water pump and blower fan of cooling tower, to effectively avoid restarting preset temperature setting because of compressor
High frequent start and stop caused by too small, and because compressor restart preset temperature setting it is excessive due to cause in a period of time
Chilled water leaving water temperature is excessively high, to influence user's comfort, simultaneously as during compressor shutdown, cooling water water pump and
Blower fan of cooling tower is in closed state, to reduce energy waste, reduces customer using cost, improves user's body
It tests.
According to one embodiment of present invention, after compressor is restarted, also control water cooled chiller is according to can adjust
Restart strategy execution and adds uninstall action.
Specifically, after compressor is restarted, it is cold water cooling can be controlled according to the chilled water leaving water temperature of real-time detection
Water dispenser group executes plus uninstall action.
In conclusion the saving-energy operation control method of the water cooled chiller of the embodiment of the present invention, works as water cooled chiller
Chilled water leaving water temperature less than the first preset temperature, and the current loads of water cooled chiller are less than or equal to water cooling cold water
When the minimum allowable operating load of unit, the compressor shutdown in water cooled chiller is controlled, and close in water cooled chiller
Cooling water water pump and blower fan of cooling tower, and the temperature rise change rate of chilled water return water temperature and chilled water return water temperature satisfaction set
When fixed condition, compressor start is controlled, and open cooling water water pump and blower fan of cooling tower.Effectively prevent water cooled chiller frequency
Numerous alarm shuts down, high frequent starting and the problem of energy waste, improves user experience, reduce user's use at
This, while improving the reliability and service life of water cooled chiller.
Fig. 2 is the block diagram of water cooled chiller according to an embodiment of the present invention.As shown in Fig. 2, the water cooling cold water
Unit includes: compressor 10, cooling water water pump 20, blower fan of cooling tower 30, the first temperature detecting module 40 and control module 50.
Wherein, the first temperature detecting module 40 is used for the chilled water leaving water temperature of real-time detection water cooled chiller.Control
Module 50 is used to control water cooled chiller when the chilled water leaving water temperature of water cooled chiller is less than the first preset temperature and hold
Row uninstall action, and the current loads of water cooled chiller are judged, and small in the current loads of water cooled chiller
In or equal to water cooled chiller minimum allowable operating load when, control module 50 controls compressor 10 and shuts down, and closes cold
But water water pump 20 and blower fan of cooling tower 30.Wherein, the first preset temperature is corresponding temperature when water cooled chiller needs to unload
Value, for example, the first preset temperature can be the difference of target temperature set by user and preset temperature deviation threshold value.
According to one embodiment of present invention, evaporator in water cooled chiller is arranged in the first temperature detecting module 40
Water outlet.
Specifically, in water cooled chiller operational process, pass through 40 real-time detection chilled water of the first temperature detecting module
Leaving water temperature.When chilled water leaving water temperature is greater than the second preset temperature, control module 50, which controls water cooled chiller and executes, to be added
Load movement, wherein the second preset temperature is corresponding temperature value when water cooled chiller needs to load, for example, the second default temperature
Degree can be the sum of target temperature set by user and preset temperature deviation threshold value；When chilled water leaving water temperature is pre- less than first
If when temperature, control module 50 controls water cooled chiller and executes uninstall action, and judges the current loads of water cooled chiller
It whether is minimum allowable operating load.When current loads is minimum allowable operating loads and chilled water leaving water temperature is pre- less than first
If when temperature, control module 50 controls compressor 10 and shuts down, and closes cooling water water pump 20 and blower fan of cooling tower 30, effectively avoid
When customer charge is smaller, and water cooled chiller is constantly in caused water cooled chiller when minimum load operation state
Frequently the problem of alarm shutdown, energy waste, user experience is improved, reduces customer using cost, while improving water cooling
The reliability and service life of water cooler.
According to one embodiment of present invention, as shown in figure 3, above-mentioned water cooled chiller further include: second temperature inspection
Module 60 is surveyed, second temperature detection module 60 is used for the chilled water return water temperature of real-time detection water cooled chiller, wherein control
Module 50 calculates the temperature rise change rate of chilled water return water temperature according to the chilled water return water temperature of water cooled chiller, and is compressing
Machine 10 shuts down and after cooling water water pump 20 and the closing of blower fan of cooling tower 30, if the temperature rise change rate of chilled water return water temperature
Chilled water return water temperature less than default change rate and water cooled chiller goes back up to compressor and restarts preset temperature, controls mould
Block 50 controls compressor 10 and restarts, and opens cooling water water pump 20 and blower fan of cooling tower 30.
According to one embodiment of present invention, it is shut down in compressor 10 and cooling water water pump 20 and blower fan of cooling tower 30 closes
After closing, if the chilled water return water temperature of water cooled chiller is less than compressor and restarts preset temperature and chilled water return water temperature
The temperature rise change rate of degree is greater than or equal to default change rate, and control module 50 controls compressor 10 and restarts, and opens cooling water
Water pump 20 and blower fan of cooling tower 30.
According to one embodiment of present invention, the evaporator in water cooled chiller of second temperature detection module setting 60
Water inlet.
Specifically, it is contemplated that in the related technology when chilled water leaving water temperature is lower than target temperature set by user, and machine
When group has reached minimum load, the compressor shutdown in unit is controlled, and meet compressor again in chilled water leaving water temperature
After the condition of starting, compressor start is controlled.Although which can prevent unit, frequent fault alarm is shut down, if
Compressor restarts preset temperature and the too small high frequent start and stop that will lead to is arranged；It is set if compressor restarts preset temperature
Set it is excessive will lead in a period of time that chilled water leaving water temperature is excessively high, influence user's comfort.
For this purpose, in an embodiment of the present invention, controlling compressor 10 in control module 50 and shutting down, and close cooling water water pump
20 and blower fan of cooling tower 30 after, pass through 60 real-time detection chilled water return water temperature of second temperature detection module.When chilled water return water
The temperature rise change rate of temperature is less than default change rate, and when chilled water return water temperature is higher than compressor and restarts preset temperature, or
Person when chilled water return water temperature be less than compressor restart preset temperature, and the temperature rise change rate of chilled water return water temperature is greater than or
When equal to default change rate, control module 50 controls compressor 10 and restarts, and opens cooling water water pump 20 and blower fan of cooling tower
30, thus effectively avoid restarting because of compressor preset temperature setting it is too small caused by high frequent start and stop, and because of pressure
Contracting machine restarts preset temperature and is arranged excessive and causes chilled water leaving water temperature in a period of time excessively high, so that it is comfortable to influence user
Property, simultaneously as cooling water water pump and blower fan of cooling tower are in closed state during compressor shutdown, to reduce
Energy waste reduces customer using cost, improves user experience.
According to one embodiment of present invention, after compressor 10 is restarted, control module 50 also controls water cooling cold water
Unit restarts strategy execution and adds uninstall action according to can adjust.
Specifically, after compressor 10 is restarted, water cooling can be controlled according to the chilled water leaving water temperature of real-time detection
Water cooler executes plus uninstall action.
The water cooled chiller of the embodiment of the present invention, when the chilled water leaving water temperature of water cooled chiller is default less than first
Temperature, and the current loads of water cooled chiller be less than or equal to water cooled chiller minimum allowable operating load when, control
Molding block controls the compressor shutdown in water cooled chiller, and closes cooling water water pump and cooling tower in water cooled chiller
Blower, and when the temperature rise change rate of chilled water return water temperature and chilled water return water temperature meets and imposes a condition, control compressor
Starting, and open cooling water water pump and blower fan of cooling tower.To effectively prevent water cooled chiller frequently alarm shutdown, compression
The problem of machine frequent starting and energy waste, user experience is improved, reduces customer using cost, while improving water cooling
The reliability and service life of water cooler.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (6)
1. a kind of saving-energy operation control method of water cooled chiller, which comprises the following steps:
S1, the chilled water leaving water temperature of water cooled chiller described in real-time detection；
S2 controls the water cooling cold water when the chilled water leaving water temperature of the water cooled chiller is less than the first preset temperature
Unit executes uninstall action, and judges the current loads of the water cooled chiller；
S3, if the minimum allowable that the current loads of the water cooled chiller are less than or equal to the water cooled chiller is run
Load then controls the compressor shutdown in the water cooled chiller, and closes the cooling water water in the water cooled chiller
Pump and blower fan of cooling tower；
After step s 3, further includes:
The chilled water return water temperature of water cooled chiller described in real-time detection, and returned according to the chilled water of the water cooled chiller
The temperature rise change rate of coolant-temperature gage calculating chilled water return water temperature；It is preset when the temperature rise change rate of the chilled water return water temperature is less than
When change rate, if the chilled water return water temperature of the water cooled chiller, which goes back up to compressor, restarts preset temperature, control
It makes the compressor to restart, and opens the cooling water water pump and blower fan of cooling tower, wherein when the water cooled chiller
When chilled water return water temperature restarts preset temperature less than the compressor, if the temperature rise of the chilled water return water temperature changes
Rate is greater than or equal to the default change rate, then controls the compressor and restart, and open the cooling water water pump and cooling
Tower blower.
2. the saving-energy operation control method of water cooled chiller as described in claim 1, which is characterized in that in the compressor
After restarting, also controls the water cooled chiller and restart strategy execution and add uninstall action according to can adjust.
3. a kind of water cooled chiller characterized by comprising
Compressor；
Cooling water water pump；
Blower fan of cooling tower；
First temperature detecting module, chilled water of first temperature detecting module for water cooled chiller described in real-time detection
Leaving water temperature；
Control module, the control module are used for the chilled water leaving water temperature in the water cooled chiller less than the first default temperature
The water cooled chiller is controlled when spending and executes uninstall action, and the current loads of the water cooled chiller are judged,
And the water cooled chiller current loads be less than or equal to the water cooled chiller minimum allowable operating load
When, the control module controls the compressor shutdown, and closes the cooling water water pump and blower fan of cooling tower；
Second temperature detection module, chilled water of the second temperature detection module for water cooled chiller described in real-time detection
Return water temperature, wherein the control module calculates chilled water return water according to the chilled water return water temperature of the water cooled chiller
The temperature rise change rate of temperature, and after the compressor shutdown and the cooling water water pump and blower fan of cooling tower are closed, if
The temperature rise change rate of the chilled water return water temperature is less than the chilled water return water temperature of default change rate and the water cooled chiller
Degree goes back up to compressor and restarts preset temperature, and the control module controls the compressor and restarts, and opens the cooling
Water water pump and blower fan of cooling tower, and, in the compressor shutdown and the cooling water water pump and blower fan of cooling tower close it
Afterwards, if the chilled water return water temperature of the water cooled chiller is less than the compressor and restarts preset temperature and the freezing
The temperature rise change rate of water return water temperature is greater than or equal to the default change rate, and the control module controls the compressor and opens again
It is dynamic, and open the cooling water water pump and blower fan of cooling tower.
4. water cooled chiller as claimed in claim 3, which is characterized in that after the compressor is restarted, the control
Molding block also controls the water cooled chiller and restarts strategy execution and add uninstall action according to can adjust.
5. water cooled chiller as claimed in claim 3, which is characterized in that first temperature detecting module is arranged described
The water outlet of evaporator in water cooled chiller.
6. water cooled chiller as claimed in claim 3, which is characterized in that the second temperature detection module is arranged described
The water inlet of evaporator in water cooled chiller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510924883.XA CN105444482B (en) | 2015-12-11 | 2015-12-11 | Water cooled chiller and its saving-energy operation control method |
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| CN106196783B (en) * | 2016-06-28 | 2020-02-28 | 青岛海尔空调电子有限公司 | Control method and control device of module unit and module unit |
| CN106288568B (en) * | 2016-07-22 | 2019-08-20 | 珠海格力电器股份有限公司 | The high voltage protective control method and device of central air-conditioning compressor |
| CN106403175B (en) * | 2016-09-12 | 2019-03-26 | 珠海格力电器股份有限公司 | The control method and water cooler of water cooler |
| CN107024003A (en) * | 2017-05-09 | 2017-08-08 | 珠海格力电器股份有限公司 | Hot water units control method, device, system and Hot water units |
| CN107449107B (en) * | 2017-07-13 | 2019-07-23 | 珠海格力电器股份有限公司 | Multimode air-conditioner set water pump dispatch control method, water pump system and air-conditioner set |
| CN107461970B (en) * | 2017-07-19 | 2021-09-21 | 青岛海尔空调电子有限公司 | Control method of water chilling unit with evaporative condenser |
| CN107906670A (en) * | 2017-11-13 | 2018-04-13 | 南京天加环境科技有限公司 | A kind of quick loading control method of modularization cold water heat pump unit |
| CN108444159B (en) * | 2018-03-20 | 2019-11-08 | 珠海格力电器股份有限公司 | Air conditioning control method and device, air-conditioning |
| CN109186018B (en) * | 2018-08-23 | 2020-12-04 | 重庆美的通用制冷设备有限公司 | Water chilling unit and method and device for controlling water chilling unit |
| CN109764586B (en) * | 2018-12-04 | 2020-04-28 | 珠海格力电器股份有限公司 | Unit starting control method and device adaptive to variable flow |
| CN110068107B (en) * | 2019-04-08 | 2021-04-13 | 广东纽恩泰新能源科技发展有限公司 | Modular control method |
| CN110726234A (en) * | 2019-10-14 | 2020-01-24 | 珠海格力电器股份有限公司 | Load control method and device for improving load stability of unit and unit |
| CN110986254A (en) * | 2019-11-25 | 2020-04-10 | 珠海格力电器股份有限公司 | Water multi-connected air conditioner control method, computer readable storage medium and air conditioner |
| CN110953778B (en) * | 2019-12-17 | 2021-06-29 | 重庆美的通用制冷设备有限公司 | Control method and system of refrigeration equipment, refrigeration equipment and readable storage medium |
| CN114521225B (en) * | 2020-08-27 | 2024-04-09 | 三菱电机株式会社 | air conditioner |
| CN113654134B (en) * | 2021-07-30 | 2023-05-26 | 青岛海尔空调电子有限公司 | Control method of water chilling unit |
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| CN1796884A (en) * | 2004-12-30 | 2006-07-05 | 杭州华碧能源科技有限公司 | On site control device for cold water main unit in energy saving control system of central air conditioner |
| CN1904503A (en) * | 2006-08-01 | 2007-01-31 | 周锋 | Compressor variable frequency energy saving reforming method of constant speed centrifugal water cooling machine set |
| CN201373632Y (en) * | 2009-02-07 | 2009-12-30 | 广东美的电器股份有限公司 | Multi-connected air-conditioning system |
| CN101986050B (en) * | 2010-09-09 | 2013-03-06 | 宁波奥克斯电气有限公司 | Method for controlling air-conditioner in variable volume modular unit |
| KR20130127017A (en) * | 2012-05-04 | 2013-11-22 | (주)융도엔지니어링 | Cooling system using under water tank of the buildings and method thereof |
| CN204063368U (en) * | 2014-06-24 | 2014-12-31 | 广东申菱空调设备有限公司 | A kind of low-temperature air-cooling handpiece Water Chilling Units |
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