CN106801912B - A kind of water line block detection method and device of heat pump water-heating system - Google Patents
A kind of water line block detection method and device of heat pump water-heating system Download PDFInfo
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- CN106801912B CN106801912B CN201710065849.0A CN201710065849A CN106801912B CN 106801912 B CN106801912 B CN 106801912B CN 201710065849 A CN201710065849 A CN 201710065849A CN 106801912 B CN106801912 B CN 106801912B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
A kind of water line block detection method and device of heat pump water-heating system provided in an embodiment of the present invention, it is related to an electro-technical field, solve and increase hardware device and cause the design of the existing heat pump water-heating system using exchange water pump and wiring complicated, and can not accurate feedback heat pump water-heating system working condition the problem of.This method specifically includes: obtaining output-index of the DC frequency-changing water pump under current rotating speed in the current operating parameter and heat pump water-heating system of heat pump water-heating system；From water flow list, the target output-index that the DC frequency-changing water pump to match with current operating parameter is exported under current rotating speed is searched；Target output-index according to DC frequency-changing water pump in the output-index and DC frequency-changing water pump under current rotating speed under current rotating speed, judges whether the water route of heat pump water-heating system blocks.
Description
Technical field
The present invention relates to family's electro-technical field more particularly to the water line block detection methods and dress of a kind of heat pump water-heating system
It sets.
Background technique
The use for a long time of existing water heating product will appear abnormal conditions, for example, the heat pump water-heating system in water heating product
When too long between when in use, the failure of heat pump water-heating system will lead to, e.g., water route build-up of limescale, icing, water valve closing occur
And the unusual conditions such as water pipe bending, the water route so as to cause heat pump water-heating system blocks, to influence water heating product
Heating effect.In order to guarantee the reliability of heat pump water-heating system, need in time to examine the working condition of heat pump water-heating system
It surveys, to be safeguarded and to be repaired in time.
However, due to the water pump in existing heat pump water-heating system be usually exchange water pump, and exchange the revolving speed of water pump without
Method carries out stepless speed regulation control, and the heat pump water-heating system for exchanging water pump can not directly feed back its working condition.Therefore, existing
In technology, usually by increasing sensor (e.g., flow sensor, temperature sensor, pressure sensor in heat pump water-heating system
Deng), water line block judgement is carried out using these hardware sensors, to feed back the working condition of heat pump water-heating system.
But increasing hardware device can make the design of heat pump water-heating system and wiring complicated, will increase water heating product
Cost, meanwhile, influence of the increased sensor module vulnerable to external environment can not accurately feed back heat pump hot-water heating system
The working condition of system.
Summary of the invention
The embodiment of the invention provides a kind of water line block detection method and device of heat pump water-heating system, to solve to increase
Hardware device causes the design of the existing heat pump water-heating system using exchange water pump and wiring complicated, and can not accurate feedback
The problem of working condition of heat pump water-heating system.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of water line block detection method of heat pump water-heating system, comprising:
DC frequency-changing water pump in the current operating parameter and the heat pump water-heating system of heat pump water-heating system is obtained to work as
Output-index under preceding revolving speed；Wherein, the output-index includes output water flow or output power；
From water flow list, searches the DC frequency-changing water pump to match with the current operating parameter and working as forward
Lower the exported target output-index of speed；Wherein, the water flow list includes: the difference operation in the heat pump water-heating system
Under parameter, output-index of the DC frequency-changing water pump under different rotating speeds；
Working as forward according to output-index of the DC frequency-changing water pump under current rotating speed and the DC frequency-changing water pump
Target output-index under speed, judges whether the water route of the heat pump water-heating system blocks.
Second aspect provides a kind of water line block detection device of heat pump water-heating system, comprising:
Obtain module, direct current in the current operating parameter and the heat pump water-heating system for obtaining heat pump water-heating system
Output-index of the variable frequency pump under current rotating speed；Wherein, the output-index includes output water flow or output power；
Searching module, for from water flow list, searching the current operating parameter obtained with the acquisition module
The target output-index that the DC frequency-changing water pump to match is exported under current rotating speed；Wherein, the water flow list
It include: under the different operating parameters of the heat pump water-heating system, output of the DC frequency-changing water pump under different rotating speeds refers to
Mark；
Judgment module, output of the DC frequency-changing water pump under current rotating speed for being obtained according to the acquisition module
Output-index of the DC frequency-changing water pump that index and the searching module are found out under current rotating speed, judges the heat pump
Whether the water route of water-heating system blocks.
AC frequency conversion water pump in existing heat pump water-heating system is replaced with controllable straight of revolving speed by scheme provided by the present application
Variable frequency pump is flowed, DC frequency-changing water pump in the current operating parameter and the heat pump water-heating system by obtaining heat pump water-heating system
Output-index under current rotating speed searches the DC frequency-changing water pump to match with current operating parameter from water flow list
The target output-index exported under current rotating speed becomes output-index of the DC frequency-changing water pump under current rotating speed and direct current
Target output-index of the frequency water pump under current rotating speed compares, and according to comparing result, judges that the water route of heat pump water-heating system is
No blocking feeds back the working condition of heat pump water-heating system to realize.Compared with the prior art, there is no increase by the application
Add hardware device, and carries out working condition feedback using hardware device, therefore heat pump water-heating system provided by the present application is not required to
Want complicated design and wiring, accuracy low problem when also avoiding feeding back its working condition.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of water line block detection method schematic diagram of heat pump water-heating system provided by the embodiments of the present application；
Fig. 2 is a kind of water line block detection method flow chart of heat pump water-heating system provided in an embodiment of the present invention；
Fig. 3 is a kind of water line block structure of the detecting device schematic diagram of heat pump water-heating system provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in the present patent application embodiment, the technical solution in the present patent application embodiment is carried out
Clearly and completely describing, it is clear that described embodiment is only the present patent application a part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the present patent application, those of ordinary skill in the art are without making creative work
Every other embodiment obtained belongs to the range of the present patent application protection.
Heat pump water-heating system involved in the application is introduced below, is understood with helping reader:
Heat pump water-heating system provided by the present application includes outdoor unit, DC frequency-changing water pump, water route and water module.Wherein,
Outdoor unit exchanges heat with water route, and the heat of outdoor unit is transferred in water route；Water route can for floor heating, radiator, water tank with
And bathroom etc.；DC frequency-changing water pump feeds back its own water flow and power by existing algorithm, is also used to realize in water route
Water circulation；Water module is controlled and is detected to the revolving speed of DC frequency-changing water pump.
It should be noted that in the embodiment of the present application, " illustrative " or " such as " etc. words make example, example for indicating
Card or explanation.Be described as in the embodiment of the present application " illustrative " or " such as " any embodiment or design scheme do not answer
It is interpreted than other embodiments or design scheme more preferably or more advantage.Specifically, " illustrative " or " example are used
Such as " word is intended to that related notion is presented in specific ways.
It should be noted that in the embodiment of the present application, unless otherwise indicated, the meaning of " plurality " is refer to two or two with
On.For example, multiple data packets refer to two or more data packets.
It should be noted that in the embodiment of the present application, " (English: of) ", " corresponding (English: corresponding,
It relevant) " sometimes can be mixed with " corresponding (English: corresponding) ", it is noted that do not emphasizing it
When difference, meaning to be expressed is consistent.
Based on above content, the embodiment of the present invention provides a kind of water line block detection method of heat pump water-heating system, such as Fig. 1
Shown, this method comprises the following steps:
101, DC frequency-changing water pump in the current operating parameter and heat pump water-heating system of heat pump water-heating system is obtained to work as
Output-index under preceding revolving speed.
Illustratively, above-mentioned output-index includes the output water flow or output power of the DC frequency-changing water pump, wherein
Output water refers to that DC frequency-changing water pump conveys the volume of water within the unit time；Output power refers to DC frequency-changing water pump
Shaft power.Above-mentioned current operating parameter includes a variety of trip informations of the heat pump water-heating system, operating parameter letter
Breath includes but is not limited to: the outdoor environment temperature of the heat pump water-heating system, indoor environment temperature, compressor exhaust temperature, user
Set temperature, leaving water temperature, return water temperature, compressor operating frequency etc..
It should be noted that direct current becomes in the current operating parameter and heat pump water-heating system for obtaining heat pump water-heating system
For frequency water pump before the output-index under current rotating speed, heat pump water-heating system needs to run regular time, guarantees heat pump hot-water heating
System stable operation.
102, from water flow list, the DC frequency-changing water pump to match with current operating parameter is searched under current rotating speed
The target output-index exported.
Water flow list in the application includes under the different operating parameters of heat pump water-heating system, and DC frequency-changing water pump exists
Output-index under different rotating speeds, i.e., under the different service conditions of heat pump water-heating system, DC frequency-changing water pump is in different rotating speeds
Under output-index, as shown in table 1.
Table 1
Illustratively, the service condition in above-mentioned table 1 can be joined by one or more operations of the heat pump water-heating system
The revolving speed of information and DC frequency-changing water pump is counted to show, for example, if A11, A12 are for indicating the heat pump water-heating system in difference
Compressor operating frequency under run, then outdoor environment temperature, indoor environment temperature and compressor can be used in A11, A12
Running frequency indicates.Wherein, above-mentioned A11, A12, A13...... indicate different operating parameters, and above-mentioned Q11 is used for table
Show that output-index of the DC frequency-changing water pump at revolving speed S11, S12, S13 indicate the revolving speed of different DC frequency-changing water pumps.
It should be noted that the corresponding parameter information of various service conditions and the service condition in the water flow list
Corresponding output-index is recorded when the water route of the heat pump water-heating system operates normally.
Illustratively, the application can will include in current operating parameter and water flow list when executing step 102
The corresponding operating parameter of service condition is compared, find with the immediate operating parameter of current operating parameter, and will find
The corresponding DC water pump of immediate operating parameter output-index, the target as the DC water pump under current operating parameter
Output-index.For example, if the current operating parameter of the heat pump water-heating system includes the interior that the heat pump water-heating system is presently in
The current running frequency F1 of compressor in environment temperature T1, outdoor environment temperature T2 and the heat pump water-heating system, then this Shen
Please can from the corresponding operating parameter of all service conditions in water flow list, find comprising compressor operating frequency and
Then the compressor operating frequency and matched first operating parameter of frequency F1 for including from the first operating parameter, are found
Comprising indoor environment temperature and outdoor environment temperature and the indoor environment temperature for including and outdoor environment temperature and temperature T1,
Then the second operating parameter that T2 matches from the second operating parameter, is searched matched with DC frequency-changing water pump current rotating speed
The output-index of DC frequency-changing water pump, and the output with the matched DC frequency-changing water pump of DC frequency-changing water pump current rotating speed is referred to
It is denoted as target output-index.
103, according to DC frequency-changing water pump under current rotating speed output-index and DC frequency-changing water pump under current rotating speed
Target output-index, judge whether the water route of heat pump water-heating system blocks.
Illustratively, since when the water route of heat pump water-heating system normal operation, DC frequency-changing water pump is under current rotating speed
Output-index it is substantially stationary constant, when the water line block of heat pump water-heating system, DC frequency-changing water pump is under current rotating speed
Output-index can have greatly changed, and therefore, can pass through output-index and direct current of the DC frequency-changing water pump under current rotating speed
Absolute difference of the variable frequency pump between the target output-index under current rotating speed judges whether the water route of heat pump water-heating system is blocked up
Plug.
Specifically, referring to the water line block detection method flow chart of heat pump water-heating system shown in Fig. 2, by the heat pump hot-water heating
DC frequency-changing water pump current output-index Q0 of the system at the corresponding service condition A0 of current operating parameter, arranges with from water flow
Absolute difference between the output-index Q1i ' of the DC frequency-changing water pump to match found in table, i.e., | Q0-Q1i ' |, and it is predetermined
The relationship of threshold value Δ Q, wherein when above-mentioned preset threshold is that heat pump water-heating system operates normally, DC frequency-changing water pump works as forward
The permitted maximum offset of output-index under speed.Specifically, if | Q0-Q1i ' | > Δ Q determines heat pump water-heating system
Water line block；If | Q0-Q1i ' |≤Δ Q determines that the water route of heat pump water-heating system is normal.
In a kind of example, if the output-index of the DC frequency-changing water pump is output water flow, step 103 is specifically wrapped
Include following steps:
If the target output water flow and DC frequency-changing water pump of 103a1, DC frequency-changing water pump under current rotating speed are current
When the absolute difference between output water flow under revolving speed is greater than the first predetermined threshold, then determine that the water route of heat pump water-heating system is stifled
Plug.
If the target output water flow and DC frequency-changing water pump of 103a2, DC frequency-changing water pump under current rotating speed are current
When the absolute difference between output water flow under revolving speed is less than or equal to the first predetermined threshold, then the water route of heat pump water-heating system is determined
Normally.
In another example, if the output-index of the DC frequency-changing water pump is output power, step 103 is specifically wrapped
Include following steps:
If the target output and DC frequency-changing water pump of 103b1, DC frequency-changing water pump under current rotating speed are working as forward
When the absolute difference between output power under speed is greater than the second predetermined threshold, then the water line block of heat pump water-heating system is determined.
If the target output and DC frequency-changing water pump of 103b2, DC frequency-changing water pump under current rotating speed are working as forward
When the absolute difference between output power under speed is less than or equal to the second predetermined threshold, then the water route of heat pump water-heating system is being determined just
Often.
Illustratively, when the water line block of heat pump water-heating system, the application can be by issuing fault code, Huo Zhefeng
The modes such as ring alarm prompt maintenance personal, guarantee the on-call maintenance of heat pump water-heating system.
AC frequency conversion water pump in existing heat pump water-heating system is replaced with controllable straight of revolving speed by scheme provided by the present application
Variable frequency pump is flowed, DC frequency-changing water pump in the current operating parameter and the heat pump water-heating system by obtaining heat pump water-heating system
Output-index under current rotating speed searches the DC frequency-changing water pump to match with current operating parameter from water flow list
The target output-index exported under current rotating speed becomes output-index of the DC frequency-changing water pump under current rotating speed and direct current
Target output-index of the frequency water pump under current rotating speed compares, and according to comparing result, judges that the water route of heat pump water-heating system is
No blocking feeds back the working condition of heat pump water-heating system to realize.Compared with the prior art, there is no increase by the application
Add hardware device, and carries out working condition feedback using hardware device, therefore heat pump water-heating system provided by the present application is not required to
Want complicated design and wiring, accuracy low problem when also avoiding feeding back its working condition.
Optionally, the difference for the information fed back due to different DC frequency-changing water pumps, some DC frequency-changing water pumps feedback
Information is the output water flow under current rotating speed of DC frequency-changing water pump, and the information of some DC frequency-changing water pumps feedback is straight
The power for flowing variable frequency pump can be according to direct current when the feedback information of DC frequency-changing water pump is the power of DC frequency-changing water pump
Output power of the variable frequency pump under current rotating speed calculates output water flow of the DC frequency-changing water pump under current rotating speed.
Optionally, in order to improve heat pump water-heating system provided by the present application water line block detection method accuracy, can
It is detected with repeating to implement above-mentioned steps 101, step 102 and step 103 to whether the water route of heat pump water-heating system blocks,
It is specific i.e. after step 103:
104, DC frequency-changing water pump in the current operating parameter and heat pump water-heating system of heat pump water-heating system is reacquired
Output-index under current rotating speed.
105, from water flow list, the DC frequency-changing water pump to match with current operating parameter is searched again and is working as forward
Target output-index under speed.
106, the output-index according to the DC frequency-changing water pump of reacquisition under current rotating speed and the direct current searched again
Whether target output-index of the variable frequency pump under current rotating speed, the water route for rejudging heat pump water-heating system block.
It should be noted that method and step that whether the water route for rejudging heat pump water-heating system in the present embodiment blocks
The deterministic process of 101- step 103 is similar, and details are not described herein.
Illustratively, direct current becomes in the current operating parameter and heat pump water-heating system for reacquiring heat pump water-heating system
When output-index of the frequency water pump under current rotating speed, cycle can obtain to schedule, it can also be with base
In the instruction of user instruction, obtained according to user demand is acyclic.In this way to the current operation of heat pump water-heating system
Output-index of the DC frequency-changing water pump under current rotating speed carries out multiplicating acquisition in parameter and heat pump water-heating system, thus
Repeatedly blocking can be carried out to the water route of heat pump water-heating system to determine, improve the detection effect of the water line block of heat pump water-heating system
Rate.
In addition, the embodiment of the present application to execute step 101- step 103 number without limitation, and work as above-mentioned repetitive process
In the result of the middle water line block for determining heat pump water-heating system, result is that the number of blocking reaches pre-determined number, then determines heat pump
The water line block of water-heating system.In order to prevent because heat pump water-heating system caused by the water line block of heat pump water-heating system is damaged,
After the water line block for determining heat pump water-heating system, forced stoppage is implemented to heat pump water-heating system.
A kind of water line block detection device of heat pump water-heating system of the embodiment of the present invention, as shown in figure 3, the device packet
It includes: obtaining module 21, searching module 22 and judgment module 23, in which:
Module 21 is obtained, direct current becomes in the current operating parameter and heat pump water-heating system for obtaining heat pump water-heating system
Output-index of the frequency water pump under current rotating speed；Wherein, output-index includes output water flow or output power.
Searching module 22, for from water flow list, searching and obtaining module 21 the current operating parameter phase obtained
The target output-index that the DC frequency-changing water pump matched is exported under current rotating speed；Wherein, water flow list includes: in heat pump water
Under the different operating parameters of heating system, output-index of the DC frequency-changing water pump under different rotating speeds.
Judgment module 23, output-index of the DC frequency-changing water pump under current rotating speed for being obtained according to acquisition module 21
Target output-index of the DC frequency-changing water pump found out with searching module 22 under current rotating speed, judges heat pump water-heating system
Whether water route blocks.
Optionally, if output-index is output water flow, judgment module 23 is specifically used for:
If target output water flow and acquisition mould of the DC frequency-changing water pump that searching module 22 is found out under current rotating speed
When absolute difference of the DC frequency-changing water pump that block 21 obtains between the output water flow under current rotating speed is greater than the first predetermined threshold,
Then determine the water line block of heat pump water-heating system.
If target that the DC frequency-changing water pump that searching module 22 is found out is exported under current rotating speed output water flow with
It obtains absolute difference of the DC frequency-changing water pump of the acquisition of module 21 between the output water flow under current rotating speed and is less than or equal to first
When predetermined threshold, then determine that the water route of heat pump water-heating system is normal.
Optionally, if output-index is output power, judgment module 23 is specifically used for:
If target output of the DC frequency-changing water pump that searching module 22 is found out under current rotating speed and acquisition module
When absolute difference of the 21 DC frequency-changing water pumps obtained between the output power under current rotating speed is greater than the second predetermined threshold, then sentence
Determine the water line block of heat pump water-heating system.
If target output of the DC frequency-changing water pump that searching module 22 is found out under current rotating speed and acquisition module
When absolute difference of the 21 DC frequency-changing water pumps obtained between the output power under current rotating speed is less than or equal to the first predetermined threshold,
Then determine that the water route of heat pump water-heating system is normal.
Optionally, obtain what the DC frequency-changing water pump in obtaining heat pump water-heating system of module 21 was exported under current rotating speed
When water flow, it is specifically used for:
Output power of the DC frequency-changing water pump under current rotating speed is obtained, and according to DC frequency-changing water pump under current rotating speed
Output power, calculate the water flow that DC frequency-changing water pump is exported under current rotating speed.
AC frequency conversion water pump in existing heat pump water-heating system is replaced with controllable straight of revolving speed by scheme provided by the present application
Variable frequency pump is flowed, DC frequency-changing water pump in the current operating parameter and the heat pump water-heating system by obtaining heat pump water-heating system
Output-index under current rotating speed searches the DC frequency-changing water pump to match with current operating parameter from water flow list
The target output-index exported under current rotating speed；Output-index of the DC frequency-changing water pump under current rotating speed and direct current are become
Target output-index of the frequency water pump under current rotating speed compares, and according to comparing result, judges that the water route of heat pump water-heating system is
No blocking feeds back the working condition of heat pump water-heating system to realize.Compared with the prior art, there is no increase by the application
Add hardware device, and carries out working condition feedback using hardware device, therefore heat pump water-heating system provided by the present application is not required to
Want complicated design and wiring, accuracy low problem when also avoiding feeding back its working condition.
It should be noted that during specific implementation, heat pump hot-water heating system in above-mentioned method flow as shown in Figure 1 and Figure 2
The performed each step of system can execute the computer of the software form stored in memory by the processor of example, in hardware
Realization is executed instruction, to avoid repeating, details are not described herein again.And journey corresponding to movement performed by above-mentioned heat pump water-heating system
Sequence can be stored in a software form in the memory of the heat pump water-heating system, in order to which processor calls execution above each
The corresponding operation of module.
Memory above may include volatile memory (volatile memory), such as random access memory
Device (random-access memory, RAM)；It also may include nonvolatile memory (non-volatile memory), example
Such as read-only memory (read-only memory, ROM), flash memory (flash memory), hard disk (hard disk
Drive, HDD) or solid state hard disk (solid-state drive, SSD)；It can also include the combination of the memory of mentioned kind.
Processor in device presented above can be a processor, be also possible to the system of multiple processing elements
Claim.For example, processor can be central processing unit (central processing unit, CPU；It may be other general places
Manage device, digital signal processor (digital signal processing, DSP), specific integrated circuit (application
Specific integrated circuit, ASIC), field programmable gate array (field-programmable gate
Array, FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components etc..It is logical
It can be microprocessor with processor or the processor be also possible to any conventional processor etc.；It can also be dedicated processes
Device, the application specific processor may include at least one of baseband processing chip, radio frequency processing chip etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the equipment of foregoing description
It with the specific work process of module, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
In several embodiments provided herein, it should be understood that disclosed method and apparatus can pass through it
Its mode is realized.For example, embodiments described above is only schematical, for example, the division of the module, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple module or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of device or unit
It connects, can be electrical property, mechanical or other forms.
The module as illustrated by the separation member may or may not be physically separated, aobvious as module
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that the independent physics of each unit includes, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of hardware adds SFU software functional unit.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (8)
1. a kind of water line block detection method of heat pump water-heating system characterized by comprising
It obtains DC frequency-changing water pump in the current operating parameter and the heat pump water-heating system of heat pump water-heating system and is working as forward
Output-index under speed；Wherein, the output-index includes output water flow or output power；
From water flow list, the DC frequency-changing water pump to match with the current operating parameter is searched under current rotating speed
Target output-index；Wherein, the water flow list includes: the institute under the different operating parameters of the heat pump water-heating system
State output-index of the DC frequency-changing water pump under different rotating speeds；
According to the DC frequency-changing water pump under current rotating speed output-index and the DC frequency-changing water pump under current rotating speed
Target output-index, judge whether the water route of the heat pump water-heating system blocks.
2. the method according to claim 1, wherein if the output-index be output water flow when, it is described to sentence
Whether the water route for the heat pump water-heating system of breaking blocks, comprising:
If target output water flow and the DC frequency-changing water pump of the DC frequency-changing water pump under current rotating speed are working as forward
When the absolute difference between output water flow under speed is greater than the first predetermined threshold, then determine that the water route of the heat pump water-heating system is stifled
Plug；
If target output water flow and the DC frequency-changing water pump of the DC frequency-changing water pump under current rotating speed are working as forward
When the absolute difference between output water flow under speed is less than or equal to first predetermined threshold, then the heat pump water-heating system is determined
Water route it is normal.
3. the method according to claim 1, wherein if the output-index be output power when, the judgement
Whether the water route of the heat pump water-heating system blocks, comprising:
If target output of the DC frequency-changing water pump under current rotating speed and the DC frequency-changing water pump are in current rotating speed
Under output power between absolute difference be greater than the second predetermined threshold when, then determine the water line block of the heat pump water-heating system；
If target output of the DC frequency-changing water pump under current rotating speed and the DC frequency-changing water pump are in current rotating speed
Under output power between absolute difference be less than or equal to second predetermined threshold when, then determine the water of the heat pump water-heating system
Road is normal.
4. according to the method described in claim 2, it is characterized in that, DC frequency-changing water pump exists in the acquisition heat pump water-heating system
Water flow is exported under current rotating speed, comprising:
Output power of the DC frequency-changing water pump under current rotating speed is obtained, and forward is being worked as according to the DC frequency-changing water pump
Output power under speed, calculates output water flow of the DC frequency-changing water pump under current rotating speed.
5. a kind of water line block detection device of heat pump water-heating system characterized by comprising
Obtain module, DC frequency-changing in the current operating parameter and the heat pump water-heating system for obtaining heat pump water-heating system
Output-index of the water pump under current rotating speed；Wherein, the output-index includes output water flow or output power；
Searching module, for from water flow list, searching the current operating parameter phase obtained with the acquisition module
The target output-index that the DC frequency-changing water pump matched is exported under current rotating speed；Wherein, the water flow list includes:
Under the different operating parameters of the heat pump water-heating system, output-index of the DC frequency-changing water pump under different rotating speeds；
Judgment module, output-index of the DC frequency-changing water pump under current rotating speed for being obtained according to the acquisition module
Target output-index of the DC frequency-changing water pump found out with the searching module under current rotating speed, judges the heat pump
Whether the water route of water-heating system blocks.
6. device according to claim 5, which is characterized in that described to sentence if the output-index is output water flow
Disconnected module is specifically used for:
If the DC frequency-changing water pump that the searching module is found out under current rotating speed target output water flow with it is described
It obtains absolute difference of the DC frequency-changing water pump of module acquisition between the output water flow under current rotating speed and is greater than first in advance
When determining threshold value, then the water line block of the heat pump water-heating system is determined；
If the target that the DC frequency-changing water pump that the searching module is found out is exported under current rotating speed exports water flow
Absolute difference of the DC frequency-changing water pump obtained with the acquisition module between the output water flow under current rotating speed is less than
When equal to first predetermined threshold, then determine that the water route of the heat pump water-heating system is normal.
7. device according to claim 5, which is characterized in that if the output-index is output power, the judgement
Module is specifically used for:
If target output of the DC frequency-changing water pump that the searching module is found out under current rotating speed is obtained with described
Absolute difference of the DC frequency-changing water pump that modulus block obtains between the output power under current rotating speed is greater than the second predetermined threshold
When value, then the water line block of the heat pump water-heating system is determined；
If target output of the DC frequency-changing water pump that the searching module is found out under current rotating speed is obtained with described
Absolute difference of the DC frequency-changing water pump between the output power under current rotating speed that modulus block obtains is less than or equal to described the
When two predetermined thresholds, then determine that the water route of the heat pump water-heating system is normal.
8. device according to claim 6, which is characterized in that acquisition module direct current in obtaining heat pump water-heating system
When the water flow that variable frequency pump is exported under current rotating speed, it is specifically used for:
Output power of the DC frequency-changing water pump under current rotating speed is obtained, and forward is being worked as according to the DC frequency-changing water pump
Output power under speed, calculates the water flow that the DC frequency-changing water pump is exported under current rotating speed.
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| CN113907667B (en) * | 2020-07-07 | 2024-05-14 | 宁波方太厨具有限公司 | Method for detecting and controlling blockage of dish-washing machine |
| CN112664998B (en) * | 2021-01-11 | 2022-04-19 | 青岛海信日立空调系统有限公司 | Multi-connected heat pump water heating system and control method thereof |
| CN112973257B (en) * | 2021-02-18 | 2022-04-22 | 珠海格力电器股份有限公司 | Filter element anti-blocking detection method and device, storage medium and water purification equipment |
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