CN106568282B - Water pump control method and device based on secondary pumping system - Google Patents
Water pump control method and device based on secondary pumping system Download PDFInfo
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- CN106568282B CN106568282B CN201610980779.7A CN201610980779A CN106568282B CN 106568282 B CN106568282 B CN 106568282B CN 201610980779 A CN201610980779 A CN 201610980779A CN 106568282 B CN106568282 B CN 106568282B
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- pump
- water tank
- refrigeration unit
- primary pump
- primary
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (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 kind of water pump control method and device based on secondary pumping system, wherein the water pump control method includes: to detect that the refrigeration unit of cold source side enters standby mode；For the primary pump of control according to the first preset time is run, the principle circulation for stopping the second preset time carries out start and stop；When detecting the variation of refrigeration unit generating state, according to the primary pump of state control after variation.The present invention is by adjusting the operation method once pumped, after the cold source side of a loop is standby, the primary pump of control carries out the timing start and stop operation of rule, in the detection being able to maintain to water tank temperature and on the basis of prevent heat transferring medium from freezing, reduce the runing time once pumped, energy consumption is reduced, to reduce the overall operation cost of secondary pumping system.
Description
Technical field
The present invention relates to refrigeration technology fields, in particular to a kind of water pump control method based on secondary pumping system
And device.
Background technique
Water tank heat exchange system can be widely applied in Refrigeration Engineering, water tank heat exchange system includes: water tank, pump and connecting tube
Road, wherein water tank primarily serves the effect that heat is exchanged to cold source side from heat source side, and pump is responsible for heat transferring medium in cold source side
It is recycled with heat source side.
Cold source side and heat source side share same group of pump, referred to as first pump system；Pump is respectively configured in cold source side and heat source side
, referred to as secondary pumping system.Fig. 1 is the schematic diagram of the secondary pumping system of the prior art, as shown in Figure 1, secondary pumping system includes:
Cold source side, heat source side and water tank.Wherein, cold source side, primary pump and corresponding circulation line (cold medium is for return pipe road) composition are primary
Loop, heat source side, secondary pump form secondary loop with corresponding circulation line (thermal medium is for return pipe road).Cold source side passes through a system
Cold host generates cooling capacity, and heat source side is generally customer loads.
It is relatively more using first pump system at present, but whole flow cannot be adjusted at any time, system energy consumption can not be saved.It is existing
Using the less of secondary pumping system, but for relatively large system, since engineering ductwork pressure damaed cordition is complicated, medium conveying
Pipeline distance is remote, therefore still uses secondary pumping system.Loop of secondary pumping system generally uses constant flow to keep always
Operation, and bypass line is used, guarantee that water tank temperature is constant；Secondary loop is according to service condition, using the constant current in parallel of multiple pumps
Amount or single pump variable flow operation, adapt to load and crushing variation.The characteristics of secondary pumping system is: one time pump discharge is constant, secondary
Pump adjusts flow according to demand.
It is run always due to once being pumped in secondary pumping system, especially after cold source side arrival temperature is standby, to keep water tank
Temperature detection and prevent heat transferring medium from freezing, it is necessary to maintain water pump operation, cause energy consumption higher；If using variable frequency pump,
It is larger to will lead to initial stage investment.
Summary of the invention
The embodiment of the invention provides a kind of water pump control method and device based on secondary pumping system, to solve existing skill
It once pumps in the secondary pumping system of art and runs always, the higher problem of energy consumption.
According to an aspect of the invention, there is provided a kind of water pump control method based on secondary pumping system, comprising: detection
Refrigeration unit to cold source side enters standby mode；The primary pump of control according to the first preset time is run, stop second it is default when
Between principle circulation carry out start and stop；When detecting refrigeration unit generating state variation, controlled according to the state after variation
The primary pump.
Preferably, first preset time is that current media can be in the duration of water tank circulation primary；Described second is pre-
If the time is the current media naturally static and not congelative duration in circulation line.
Preferably, detecting that the refrigeration unit of cold source side enters standby mode, comprising: the temperature of real-time detection water tank,
Wherein, the water tank connects and composes a loop by circulation line and the cold source side, the primary pump；When the water tank
When temperature drops to target temperature, detect whether the refrigeration unit enters standby mode.
Preferably, when detecting refrigeration unit generating state variation, according to the state control after variation
Primary pump, comprising: when detecting that the refrigeration unit is shut down, close the primary pump；When detecting the refrigeration unit weight
When new unlatching, the primary pump is opened.
Preferably, closing the primary pump, comprising: close immediately primary described in the primary pump or time-delay closing
Pump.
Preferably, the method also includes: when detecting that the cold source side persistently carries out cooling supply to water tank, control institute
It states primary pump continuous service and keeps flow constant in the process of running.
According to another aspect of the present invention, a kind of pump control unit based on secondary pumping system is provided, comprising: detection
Unit, the refrigeration unit for detecting cold source side enter standby mode；First control unit, for controlling primary pump according to operation
First preset time, the principle circulation for stopping the second preset time carry out start and stop；Second control unit, for described when detecting
When refrigeration unit generating state changes, the primary pump is controlled according to the state after variation.
Preferably, first preset time is that current media can be in the duration of water tank circulation primary；Described second is pre-
If the time is the current media naturally static and not congelative duration in circulation line.
Preferably, the detection unit includes: first detection module, the temperature for real-time detection water tank, wherein institute
It states water tank and loop is connected and composed by circulation line and the cold source side, the primary pump；Second detection module, for working as
When the temperature of the water tank drops to target temperature, detect whether the refrigeration unit enters standby mode.
Preferably, second control unit includes: closedown module, detect that the refrigeration unit is shut down for working as
When, close the primary pump；Opening module, for opening the primary pump when detecting that the refrigeration unit reopens.
Preferably, the closedown module is specifically used for closing immediately described in the primary pump or time-delay closing once
Pump.
Preferably, described device further include: third control unit detects the cold source side persistently to water tank for working as
When carrying out cooling supply, controls the primary pump continuous service and keep flow constant in the process of running.
It applies the technical scheme of the present invention, it is standby in the cold source side of a loop by adjusting the operation method once pumped
Afterwards, the primary pump of control carries out the timing start and stop operation of rule, in the detection being able to maintain to water tank temperature and heat exchange is prevented to be situated between
On the basis of matter is freezed, reduce the runing time once pumped, reduce energy consumption, to reduce the overall operation of secondary pumping system
Cost.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted a limitation of the invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the secondary pumping system of the prior art；
Fig. 2 is the flow chart of the water pump control method based on secondary pumping system of the embodiment of the present invention；
Fig. 3 is the structural block diagram of the pump control unit based on secondary pumping system of the embodiment of the present invention.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
For in the prior art, the primary pump in secondary pumping system is run always, leads to the higher problem of energy consumption, the present invention
Embodiment provides a kind of water pump control method based on secondary pumping system, and Fig. 2 is the embodiment of the present invention based on secondary pump system
The flow chart of the water pump control method of system, as shown in Fig. 2, method includes the following steps:
Step S201 detects that the refrigeration unit of cold source side enters standby mode.Refrigeration unit is in standby mode, compression
Machine shuts down but does not shut down.
Step S202 controls primary pump according to the first preset time is run, stop the second preset time principle recycle into
Row start and stop.For example, the first preset time is A minutes, the second preset time is B minutes, then one time pump operation A minutes, stops B points
Then clock reruns A minutes, stop B minutes, according to this circulating start and outage, until the state of refrigeration unit changes, for example, stopping
Machine reopens.
Step S203, when detecting the variation of refrigeration unit generating state, according to the primary pump of state control after variation.
The scheme of above-described embodiment, by adjusting the operation method once pumped, after the cold source side of a loop is standby, control
The primary pump of system carries out the timing start and stop operation of rule, in the detection being able to maintain to water tank temperature and prevents heat transferring medium from freezing
On the basis of, reduce the runing time once pumped, reduce energy consumption, to reduce the overall operation cost of secondary pumping system.
Above-mentioned water pump control method is the primary pump for secondary pumping system, and the specific works of secondary pump are in the present invention not
It limits, secondary pump can control for variable delivery pump or pump group.
Above-mentioned first preset time (i.e. runing time) is that current media can be in the duration of water tank circulation primary, this is first pre-
If the shorter the time the more energy saving, but needs to meet the The shortest operation time requirement of water pump.Above-mentioned second preset time is (when stopping
Between) it is current media naturally static and not congelative duration in circulation line, the longer second preset time the more energy saving, but
Temperature rise rate and the setting of current heat source side payload for needing to consider water tank, avoid water tank temperature from rising too high.So set
The first preset time and the second preset time are set, guarantees to detect water tank temperature, and heat transferring medium can be prevented
Freeze.
In one embodiment, step S201 can be realized by following steps: the temperature of real-time detection water tank, wherein
Water tank connects and composes a loop by circulation line and cold source side, primary pump；When the temperature of water tank drops to target temperature,
Whether detection refrigeration unit enters standby mode.
In practical applications, temperature detection can be realized by temperature sensor, can detecte the temperature in circulation line circuit
Degree, it is preferred that directly detect the temperature of water tank.Temperature sensor may be mounted at water tank, and the temperature detected in this way is water
The temperature of case, thermotonus fast speed after circulation, for the timing start-up and shut-down control once pumped, the second preset time (stops
Time) it can extend, the first preset time (i.e. runing time) can shorten.If water tank installation site from refrigeration unit compared with
Far, then temperature sensor wire length is longer, and temperature detecting precision can be declined.
In one embodiment, step S203 may include: to close primary pump when detecting that refrigeration unit is shut down；When
When detecting that refrigeration unit reopens, primary pump is opened.When refrigeration unit is shut down or reopened, no matter once pump is in
First runing time or the second runing time all enter the control that water pump turns off or on.It can be with specifically, closing primary pump
It is to close primary pump immediately or time-delay closing once pumps, time of time-delay closing can sets itself according to demand.This implementation
In example when refrigeration unit changes from standby mode, corresponding control is made according to the state after change and (is turned off or on
Primary pump), it can guarantee the normal operation of refrigeration unit, secondary pumping system is operated normally.
In one embodiment, the above method can also include: when detect cold source side persistently to water tank carry out cooling supply when,
Control is primary to be pumped continuous service and keeps flow constant in the process of running.That is, in cooling supply, primary pump and existing skill
It is the same in art, continuous service is kept, to guarantee normal cooling supply.
Based on the same inventive concept, the embodiment of the invention also provides a kind of, and the water pump based on secondary pumping system controls dress
It sets, can be used to implement method described in above-described embodiment.The device may be mounted in refrigeration host computer.The device with it is above-mentioned
The principle of water pump control method is consistent, and overlaps will not be repeated.Used below, term " unit " or " module " can be with
Realize the combination of the software and/or hardware of predetermined function.Although system described in following embodiment is preferably come with software real
It is existing, but the realization of the combination of hardware or software and hardware is also that may and be contemplated.
Fig. 3 is the structural block diagram of the pump control unit based on secondary pumping system of the embodiment of the present invention, as shown in figure 3,
The device includes: detection unit 31, first control unit 32 and the second control unit 33.
Detection unit 31, the refrigeration unit for detecting cold source side enter standby mode.Refrigeration unit in standby mode,
Compressor shuts down but does not shut down.
First control unit 32 stops the second preset time for controlling primary pump according to the first preset time is run
Principle circulation carries out start and stop.For example, the first preset time is A minutes, the second preset time is B minutes, then one time pump operation A points
Clock stops B minutes, then reruns A minutes, stops B minutes, according to this circulating start and outage, until the state of refrigeration unit changes
Become, for example, shutting down or reopening.
Second control unit 33, for when detect refrigeration unit generating state variation when, according to the state control after variation
The primary pump of system.
The scheme of above-described embodiment, by adjusting the operation method once pumped, after the cold source side of a loop is standby, control
The primary pump of system carries out the timing start and stop operation of rule, in the detection being able to maintain to water tank temperature and prevents heat transferring medium from freezing
On the basis of, reduce the runing time once pumped, reduce energy consumption, to reduce the overall operation cost of secondary pumping system.
First preset time is that current media can be in the duration of water tank circulation primary；Second preset time is that current media exists
Naturally static and not congelative duration in circulation line.
Detection unit 31 may include: first detection module, the temperature for real-time detection water tank, wherein water tank passes through
Circulation line and cold source side, primary pump connect and compose a loop；Second detection module drops to mesh for the temperature when water tank
When marking temperature, whether detection refrigeration unit enters standby mode.
In practical applications, temperature detection can be realized by temperature sensor, can detecte the temperature in circulation line circuit
Degree, it is preferred that directly detect the temperature of water tank.Temperature sensor may be mounted at water tank, and the temperature detected in this way is water
The temperature of case, thermotonus fast speed after circulation, for the timing start-up and shut-down control once pumped, the second preset time (stops
Time) it can extend, the first preset time (i.e. runing time) can shorten.If water tank installation site from refrigeration unit compared with
Far, then temperature sensor wire length is longer, and temperature detecting precision can be declined.
Second control unit 33 may include: closedown module, primary for closing when detecting that refrigeration unit is shut down
Pump；Opening module, for when detecting that refrigeration unit reopens, opening primary pump.When refrigeration unit is shut down or is opened again
Qi Shi, no matter once pump is in the first runing time or the second runing time, all enters the control that water pump turns off or on.It closes
Die closing block is specifically used for closing primary pump immediately or time-delay closing once pumps.The time of time-delay closing can according to demand voluntarily
Setting.In the present embodiment when refrigeration unit changes from standby mode, corresponding control is made according to the state after change
(turning off or on primary pump), can guarantee the normal operation of refrigeration unit, secondary pumping system is operated normally.
Above-mentioned apparatus can also include: third control unit, detect that cold source side persistently carries out cooling supply to water tank for working as
When, it controls primary pump continuous service and keeps flow constant in the process of running.That is, once being pumped and existing in cooling supply
There is the same in technology, holding continuous service, to guarantee normal cooling supply.
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
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail it is bright, it should be understood that the above is only a specific embodiment of the present invention, the guarantor being not intended to limit the present invention
Range is protected, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of water pump control method based on secondary pumping system characterized by comprising
Detect that the refrigeration unit of cold source side enters standby mode；
For the primary pump of control according to the first preset time is run, the principle circulation for stopping the second preset time carries out start and stop；
When detecting refrigeration unit generating state variation, the primary pump is controlled according to the state after variation；
First preset time is that current media can be in the duration of water tank circulation primary；Second preset time is described works as
Preceding medium naturally static and not congelative duration in circulation line.
2. the method according to claim 1, wherein detect that the refrigeration unit of cold source side enters standby mode,
Include:
The temperature of real-time detection water tank, wherein the water tank connects structure by circulation line and the cold source side, the primary pump
Cheng Yici loop；
When the temperature of the water tank drops to target temperature, detect whether the refrigeration unit enters standby mode.
3. the method according to claim 1, wherein when detect the refrigeration unit generating state variation when,
The primary pump is controlled according to the state after variation, comprising:
When detecting that the refrigeration unit is shut down, the primary pump is closed；
When detecting that the refrigeration unit reopens, the primary pump is opened.
4. according to the method described in claim 3, it is characterized in that, closing the primary pump, comprising: close immediately described primary
It is once pumped described in pump or time-delay closing.
5. method according to claim 1 to 4, which is characterized in that the method also includes:
When detecting that the cold source side persistently carries out cooling supply to water tank, the primary pump continuous service is controlled and in operational process
Middle holding flow is constant.
6. a kind of pump control unit based on secondary pumping system characterized by comprising
Detection unit, the refrigeration unit for detecting cold source side enter standby mode；
First control unit, for controlling primary pump according to the first preset time is run, the principle for stopping the second preset time is followed
Ring carries out start and stop；
Second control unit, for being controlled according to the state after variation when detecting refrigeration unit generating state variation
The primary pump；
First preset time is that current media can be in the duration of water tank circulation primary；Second preset time is described works as
Preceding medium naturally static and not congelative duration in circulation line.
7. device according to claim 6, which is characterized in that the detection unit includes:
First detection module, the temperature for real-time detection water tank, wherein the water tank passes through circulation line and the cold source
Side, the primary pump connect and compose a loop；
Second detection module, for when the temperature of the water tank drops to target temperature, detect the refrigeration unit whether into
Enter standby mode.
8. device according to claim 6, which is characterized in that second control unit includes:
Closedown module, for closing the primary pump when detecting that the refrigeration unit is shut down；
Opening module, for opening the primary pump when detecting that the refrigeration unit reopens.
9. device according to claim 8, which is characterized in that the closedown module is specifically used for closing immediately described primary
It is once pumped described in pump or time-delay closing.
10. device according to any one of claims 6 to 9, which is characterized in that described device further include:
Third control unit is held for when detecting that the cold source side persistently carries out cooling supply to water tank, controlling the primary pump
Reforwarding row and in the process of running keep flow it is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980779.7A CN106568282B (en) | 2016-11-08 | 2016-11-08 | Water pump control method and device based on secondary pumping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610980779.7A CN106568282B (en) | 2016-11-08 | 2016-11-08 | Water pump control method and device based on secondary pumping system |
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| Publication Number | Publication Date |
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| CN106568282A CN106568282A (en) | 2017-04-19 |
| CN106568282B true CN106568282B (en) | 2019-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610980779.7A Active CN106568282B (en) | 2016-11-08 | 2016-11-08 | Water pump control method and device based on secondary pumping system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001021177A (en) * | 1999-07-08 | 2001-01-26 | Smc Corp | Circulating system of constant-temperature refrigerant liquid |
| CN103383121A (en) * | 2012-05-03 | 2013-11-06 | 南京市建筑设计研究院有限责任公司 | District air-conditioner distributed secondary pump system |
| CN105683671A (en) * | 2013-12-03 | 2016-06-15 | 三菱重工业株式会社 | Device for controlling number of operating heat source devices, heat source system, control method, and program |
-
2016
- 2016-11-08 CN CN201610980779.7A patent/CN106568282B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001021177A (en) * | 1999-07-08 | 2001-01-26 | Smc Corp | Circulating system of constant-temperature refrigerant liquid |
| CN103383121A (en) * | 2012-05-03 | 2013-11-06 | 南京市建筑设计研究院有限责任公司 | District air-conditioner distributed secondary pump system |
| CN105683671A (en) * | 2013-12-03 | 2016-06-15 | 三菱重工业株式会社 | Device for controlling number of operating heat source devices, heat source system, control method, and program |
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|---|---|
| CN106568282A (en) | 2017-04-19 |
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