CN106839085B - A kind of heat pump water-heating system dry combustion method determination method and device - Google Patents
A kind of heat pump water-heating system dry combustion method determination method and device Download PDFInfo
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- CN106839085B CN106839085B CN201710102916.1A CN201710102916A CN106839085B CN 106839085 B CN106839085 B CN 106839085B CN 201710102916 A CN201710102916 A CN 201710102916A CN 106839085 B CN106839085 B CN 106839085B
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Classifications
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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
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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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
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The embodiment of the present application provides a kind of heat pump water-heating system dry combustion method determination method and device, is related to field of household appliances, accurately can carry out dry combustion method judgement to heat pump water-heating system.This method comprises: the DC frequency-changing water pump in control heat pump water-heating system and obtains first output-index of the DC frequency-changing water pump under the first revolving speed according to the first rotation speed operation；DC frequency-changing water pump is controlled according to the second rotation speed operation, and obtains second output-index of the DC frequency-changing water pump under the second revolving speed；According to the absolute difference between the first output-index and second output-index, determine whether heat pump water-heating system dry combustion method occurs；Wherein, output-index includes output water flow and output power；The output-index includes first output-index and second output-index.The application is applied to heat pump water-heating system.
Description
Technical field
The present invention relates to field of household appliances more particularly to a kind of heat pump water-heating system dry combustion method determination methods and device.
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, heat pump water-heating system will appear the unusual conditions such as dry combustion method, so as to cause the water route of heat pump water-heating system
Appearance water is very few or does not have the case where water, to influence the heating effect (note: the heat exchange in heat pump water-heating system of water heating product
When device (e.g., water tank) dry combustion method, since not new cold water flows into, the water in heat exchanger is caused not flow, burning makes heat exchange
The boiled generation vapor of water in device can finally make heat exchanger water pipe broken so that the internal pressure of heat exchanger and pipeline be made to increase
It splits, seriously can then generate explosion).In order to guarantee the reliability of heat pump water-heating system, need in time to the work of heat pump water-heating system
It is detected as state, 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), dry combustion method judgement is carried out to heat pump water-heating system using these hardware sensors, to feed back the work shape of heat pump water-heating system
State.
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 to heat pump water-heating system into
Row dry combustion method judgement.
Summary of the invention
The embodiment of the present invention provides a kind of heat pump water-heating system dry combustion method determination method and device, can be accurately to heat pump
Water-heating system carries out dry combustion method judgement.
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 heat pump water-heating system dry combustion method determination method, comprising:
The DC frequency-changing water pump in heat pump water-heating system is controlled according to the first rotation speed operation, and obtains the DC frequency-changing water
The first output-index under the first revolving speed is pumped, controls the DC frequency-changing water pump according to the second rotation speed operation, and described in acquisition
Second output-index of the DC frequency-changing water pump under the second revolving speed；
According to the absolute difference between first output-index and second output-index, heat pump hot-water heating system is determined
Whether system there is dry combustion method；
Wherein, output-index includes output water flow and output power, and the output-index includes that first output refers to
Mark and second output-index.
Second aspect provides a kind of heat pump water-heating system dry combustion method decision maker, comprising:
Control module for controlling the DC frequency-changing water pump in heat pump water-heating system according to the first rotation speed operation, and obtains
First output-index of the DC frequency-changing water pump under the first revolving speed controls the DC frequency-changing water pump and transports according to the second revolving speed
Turn, and obtains second output-index of the DC frequency-changing water pump under the second revolving speed；
Determination module, first output-index and second output-index for being obtained according to the control module
Between absolute difference, determine whether the heat pump water-heating system dry combustion method occurs；
Wherein, output-index includes output water flow and output power, and the output-index includes that first output refers to
Mark and second output-index.
When there is dry combustion method due to heat pump water-heating system, the water in the water route of heat pump water-heating system will not flow, therefore, this Shen
It is please operated by the DC frequency-changing water pump in control heat pump water-heating system according to different rotating speeds, and obtains DC frequency-changing water pump not
With the output-index under revolving speed, then the first output-index and DC frequency-changing according to DC frequency-changing water pump under the first revolving speed
Absolute difference between the second output-index of the water pump under the second revolving speed is according to the first output-index and the second output-index
It is no to have differences, to determine whether heat pump water-heating system dry combustion method occurs.Compared with the prior art, the application is without increasing additionally
Hardware device, the hardware cost of saving do not need complicated design and wiring, can accurately do to heat pump water-heating system
Burn judgement.
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 method flow diagram of heat pump water-heating system dry combustion method determination method provided in an embodiment of the present invention；
Fig. 2 is the method flow diagram of another heat pump water-heating system dry combustion method determination method provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of heat pump water-heating system dry combustion method decision maker provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
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 heat pump water-heating system dry combustion method determination method, as shown in Figure 1,
This method comprises the following steps:
101, the DC frequency-changing water pump in heat pump water-heating system is controlled according to the first rotation speed operation, and obtains DC frequency-changing water
Pump the first output-index under the first revolving speed.
Illustratively, the output-index in the application includes the output water flow or output power of DC frequency-changing water pump,
In, output water refers to the water that DC frequency-changing water pump conveys within the unit time, and output power refers to DC frequency-changing
The shaft power of water pump.
It should be noted that heat pump water-heating system needs when control heat pump water-heating system is operated according to certain revolving speed
Regular time is run, guarantees the stable operation of heat pump water-heating system.
102, control DC frequency-changing water pump is according to the second rotation speed operation, and obtains DC frequency-changing water pump under the second revolving speed
Second output-index.
103, according to the absolute difference between the first output-index and the second output-index, determine whether heat pump water-heating system goes out
Existing dry combustion method.
Illustratively, when there is dry combustion method due to the water in heat pump water-heating system, the water in the water route of heat pump water-heating system is not
It can flow, therefore, whether the water flow that the application can export under different rotating speeds according to DC frequency-changing water pump changes, and comes
Judge whether heat pump water-heating system dry combustion method occurs.When specifically judging, since the mean power of DC frequency-changing water pump is able to reflect out
Its water flow that can be provided, therefore, the application can be directly based upon the water flow of the feedback of DC frequency-changing water pump, can also be with base
Dry combustion method judgement is carried out in the mean power of the feedback of DC frequency-changing water pump.
Illustratively, when the appearance dry combustion method 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.
When there is dry combustion method due to heat pump water-heating system, the water in the water route of heat pump water-heating system will not flow, therefore, this Shen
It is please operated by the DC frequency-changing water pump in control heat pump water-heating system according to different rotating speeds, and obtains DC frequency-changing water pump not
With the output-index under revolving speed, then the first output-index and DC frequency-changing according to DC frequency-changing water pump under the first revolving speed
Absolute difference between the second output-index of the water pump under the second revolving speed is according to the first output-index and the second output-index
It is no to have differences, to determine whether heat pump water-heating system dry combustion method occurs.Compared with the prior art, the application is without increasing additionally
Hardware device, the hardware cost of saving do not need complicated design and wiring, can accurately do to heat pump water-heating system
Burn judgement.
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 absolute difference between 103a1, the first output water flow and the second output water flow is more than or equal to the first predetermined threshold
Value then determines that heat pump water-heating system operates normally.
If the absolute difference between 103a2, the first output water flow and the second output water flow less than the first predetermined threshold,
Determine that dry combustion method occurs in heat pump water-heating system.
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 absolute difference between 103b1, the first output power and the second output power is more than or equal to the second predetermined threshold,
Determine that heat pump water-heating system operates normally.
If the absolute difference between 103b2, the first output power and the second output power determines less than the second predetermined threshold
There is dry combustion method in heat pump water-heating system.
Further, when executing step 101,102, that is, output-index of the DC frequency-changing water pump under rotating speed of target is obtained
When, average output when specific available DC frequency-changing water pump operates in the first predetermined amount of time according to rotating speed of target refers to
Mark (for example, averagely exporting water flow and average output power), wherein the rotating speed of target includes the first revolving speed and second turn
Speed.
Optionally, in order to improve heat pump water-heating system provided by the present application dry combustion method determination method accuracy, Ke Yichong
Implement above-mentioned steps 101, step 102 and step 103 again to detect to whether heat pump water-heating system dry combustion method occurs, i.e., in step
It is specific after rapid 103:
104, DC frequency-changing water pump is controlled again according to the first rotation speed operation, and obtains DC frequency-changing water pump in the first revolving speed
Under the first output-index.
105, DC frequency-changing water pump is controlled again according to the second rotation speed operation, and obtains DC frequency-changing water pump in the second revolving speed
Under the second output-index.
106, according to the absolute difference between the first output-index of reacquisition and the second output-index, determine heat pump hot-water heating
Whether system there is dry combustion method.
It should be noted that rejudging whether heat pump water-heating system the method and step of dry combustion method occurs in the present embodiment
The deterministic process of 101- step 103 is similar, and details are not described herein.
Illustratively, the application periodically can carry out dry combustion method judgement to heat pump water-heating system according to predetermined period,
Dry combustion method judgement can be carried out to heat pump water-heating system according to user demand is acyclic based on the instruction of user instruction, thus
Multiple dry combustion method blocking can be carried out to heat pump water-heating system to determine, improve the detection effect of the dry combustion method judgement 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 when above-mentioned repetition to heat
It pumps heating system to carry out in the judgement result of dry combustion method judgement, if it is determined that the number for dry combustion method reaches pre-determined number, then determines heat pump
There is dry combustion method in water-heating system.Cause heat pump water-heating system to be damaged because heat pump water-heating system dry combustion method occurs in order to prevent, is determining
After heat pump water-heating system dry combustion method, forced stoppage can be implemented to heat pump water-heating system.
In a kind of example, the application can control the DC frequency-changing water in heat pump water-heating system when executing step 101
It pumps in the first predetermined amount of time according to the first rotation speed operation, and obtains the DC frequency-changing water pump in the first predetermined amount of time
Average output-index when according to the first rotation speed operation.When executing step 102, the direct current in heat pump water-heating system can control
Variable frequency pump, according to the second rotation speed operation, and obtains the DC frequency-changing water pump in the second pre- timing in the second predetermined amount of time
Between in section according to the second rotation speed operation when average output-index, wherein above-mentioned average output-index includes averagely exporting water
Flow and average output power.
Based on this, referring to the dry combustion method decision flowchart of heat pump water-heating system shown in Fig. 2, the present embodiment is to heat pump hot-water heating system
The dry combustion method decision process of system carries out exemplary description, specific:
1) when heat pump water-heating system is switched on every time, anti-dry judgment model can be entered.Under the anti-dry judgment model, electricity
Control system controls DC frequency-changing water pump and operates according to revolving speed s1, runs the t1 time, while recording the mean flow of DC frequency-changing water pump
Measure Q1 or mean power P1.
2) electric control system controls DC frequency-changing water pump is operated according to revolving speed s2, and Δ s1=s2-s1 > 0, runs the t2 time,
The average flow rate Q2 or mean power P2 of DC frequency-changing water pump are recorded simultaneously.
3) Δ Q1=Q2-Q1 or Δ P1=P2-P1 is calculated；If Δ Q1 >=Δ Q01 (Δ Q01 be the first predetermined threshold) or
Δ P1 >=Δ P01 (Δ P01 is the second predetermined threshold), then it is assumed that water system is normal, if continuous n1 times judges normal or t3
Occurs the subnormal judgement of n2 in time, it is believed that water system does not occur dry combustion method, and water pump enters normal operating conditions；, whereas if Δ
Q1 < Δ Q01 or Δ P1 < Δ P01, then it is assumed that water system is abnormal, if judging exception for n3 times or occurring n4 times in the t4 time, recognizes
There is dry combustion method for water system, water pump stops working, electric-control system alarm；If Δ Q02≤Δ Q1 < Δ Q01 or Δ P02≤Δ P1
< Δ P01 is again introduced into anti-dry judgment model after then water pump is by the t5 time is operated normally.
The embodiment of the present invention provides a kind of heat pump water-heating system dry combustion method decision maker, as shown in figure 3, the device 2 includes:
Control module 21 and determination module 22, in which:
Control module 21 for controlling the DC frequency-changing water pump in heat pump water-heating system according to the first rotation speed operation, and obtains
First output-index of the DC frequency-changing water pump under the first revolving speed is taken, controls DC frequency-changing water pump according to the second rotation speed operation, and
Obtain second output-index of the DC frequency-changing water pump under the second revolving speed.
Determination module 22, it is absolute between the first output-index and the second output-index for being obtained according to control module 21
Difference, determines whether heat pump water-heating system dry combustion method occurs.
Wherein, output-index includes output water flow and output power, which includes the first output-index and the
Two output-indexes.
Optionally, if output-index is output water flow, determination module 21 is specifically used for:
If the absolute difference between the first output water flow and the second output water flow is more than or equal to the first predetermined threshold, sentence
Determine institute's heat pump water-heating system normal operation；
If the absolute difference between the first output water flow and the second output water flow determines heat less than the first predetermined threshold
It pumps heating system and dry combustion method occurs.
Optionally, if output-index is output power, determination module 21 is specifically used for:
If the absolute difference between the first output power and the second output power is more than or equal to the second predetermined threshold, heat is determined
Heating system is pumped to operate normally；
If the absolute difference between the first output power and the second output power determines heat pump water less than the second predetermined threshold
There is dry combustion method in heating system.
Optionally, control module 21 is stated, is also used to:
Obtain average output-index when DC frequency-changing water pump operates in the first predetermined amount of time according to rotating speed of target；Its
In, which includes the first revolving speed and the second revolving speed.
When there is dry combustion method due to heat pump water-heating system, the water in the water route of heat pump water-heating system will not flow, therefore, this Shen
It is please operated by the DC frequency-changing water pump in control heat pump water-heating system according to different rotating speeds, and obtains DC frequency-changing water pump not
With the output-index under revolving speed, then the first output-index and DC frequency-changing according to DC frequency-changing water pump under the first revolving speed
Absolute difference between the second output-index of the water pump under the second revolving speed is according to the first output-index and the second output-index
It is no to have differences, to determine whether heat pump water-heating system dry combustion method occurs.Compared with the prior art, the application is without increasing additionally
Hardware device, the hardware cost of saving do not need complicated design and wiring, can accurately do to heat pump water-heating system
Burn judgement.
In several embodiments provided herein, it should be understood that disclosed device and method can pass through it
Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be tied
Another system is closed or is desirably integrated into, or some features can be ignored or not executed.Another point, it is shown or discussed
Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or logical of device or unit
Letter connection can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
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.
The above-mentioned integrated unit being realized in the form of SFU software functional unit can store and computer-readable deposit at one
In storage media.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the portion of each embodiment the method for the present invention
Step by step.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, abbreviation
ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic or disk etc. are various can store
The medium of program code.
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 (10)
1. a kind of heat pump water-heating system dry combustion method determination method characterized by comprising
The DC frequency-changing water pump in heat pump water-heating system is controlled according to the first rotation speed operation, and obtains the DC frequency-changing water pump and exists
The first output-index under first revolving speed controls the DC frequency-changing water pump according to the second rotation speed operation, and obtains the direct current
Second output-index of the variable frequency pump under the second revolving speed；
According to the absolute difference between first output-index and second output-index, determine that the heat pump water-heating system is
It is no dry combustion method occur；
Wherein, output-index includes output water flow and output power, the output-index include first output-index and
Second output-index.
2. the method according to claim 1, wherein if the output-index is described when exporting water flow
According to the absolute difference between first output-index and second output-index, determine whether the heat pump water-heating system occurs
Dry combustion method, comprising:
If the absolute difference between the first output water flow and the second output water flow is more than or equal to the first predetermined threshold,
Then determine that the heat pump water-heating system operates normally；
If the absolute difference between the first output water flow and the second output water flow is sentenced less than the first predetermined threshold
There is dry combustion method in the fixed heat pump water-heating system.
3. the method according to claim 1, wherein if the output-index be output power when, the basis
Absolute difference between first output-index and second output-index, determines whether the heat pump water-heating system is done
It burns, comprising:
If the absolute difference between first output power and second output power is more than or equal to the second predetermined threshold, sentence
The fixed heat pump water-heating system operates normally；
If the absolute difference between first output power and second output power determines institute less than the second predetermined threshold
It states heat pump water-heating system and dry combustion method occurs.
4. method according to claim 1-3, which is characterized in that described to obtain the DC frequency-changing water pump the
The first output-index under one revolving speed, comprising:
Obtain the DC frequency-changing water pump in the first predetermined amount of time according to the first rotation speed operation when average output-index；Its
In, the average output-index includes averagely exporting water flow and average output power.
5. method according to claim 1-3, which is characterized in that described to obtain the DC frequency-changing water pump the
The second output-index under two revolving speeds, comprising:
Obtain the DC frequency-changing water pump in the second predetermined amount of time according to the second rotation speed operation when average output-index；Its
In, the average output-index includes averagely exporting water flow and average output power.
6. a kind of heat pump water-heating system dry combustion method decision maker characterized by comprising
Control module, for controlling the DC frequency-changing water pump in heat pump water-heating system according to the first rotation speed operation, and described in acquisition
First output-index of the DC frequency-changing water pump under the first revolving speed, controls the DC frequency-changing water pump according to the second rotation speed operation,
And obtain second output-index of the DC frequency-changing water pump under the second revolving speed；
Determination module, between first output-index and second output-index for being obtained according to the control module
Absolute difference, determines whether the heat pump water-heating system dry combustion method occurs；
Wherein, output-index includes output water flow and output power, the output-index include first output-index and
Second output-index.
7. device according to claim 6, which is characterized in that described to sentence if the output-index is output water flow
Cover half block, is specifically used for:
If the absolute difference between the first output water flow and the second output water flow is more than or equal to the first predetermined threshold,
Then determine that the heat pump water-heating system operates normally；
If the absolute difference between the first output water flow and the second output water flow is sentenced less than the first predetermined threshold
There is dry combustion method in the fixed heat pump water-heating system.
8. device according to claim 6, which is characterized in that if the output-index is output power, the judgement
Module is specifically used for:
If the absolute difference between first output power and second output power is more than or equal to the second predetermined threshold, sentence
The fixed heat pump water-heating system operates normally；
If the absolute difference between first output power and second output power determines institute less than the second predetermined threshold
It states heat pump water-heating system and dry combustion method occurs.
9. according to the described in any item devices of claim 6-8, which is characterized in that the control module is also used to:
Obtain the DC frequency-changing water pump in the first predetermined amount of time according to the first rotation speed operation when average output-index；Its
In, the average output-index includes averagely exporting water flow and average output power.
10. according to the described in any item devices of claim 6-8, which is characterized in that the control module is also used to:
Obtain the DC frequency-changing water pump in the second predetermined amount of time according to the second rotation speed operation when average output-index；Its
In, the average output-index includes averagely exporting water flow and average output power.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902239A2 (en) * | 1997-09-13 | 1999-03-17 | OTTO HEAT Heizungs-, Energie- und Anlagentechnik GmbH & Co., KG | Fluid actuated pressure control device |
| CN103671047A (en) * | 2013-12-13 | 2014-03-26 | 新界泵业集团股份有限公司 | Electric pump with controller and control method of electric pump |
| CN105275791A (en) * | 2015-11-13 | 2016-01-27 | 皇明太阳能股份有限公司 | Automatic water pump operation fault removal and control method |
| CN105696650A (en) * | 2016-03-30 | 2016-06-22 | 唐若权 | Intelligent water supply system with hot water supply function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8783433B2 (en) * | 2010-10-02 | 2014-07-22 | Ford Global Technologies, Llc | Dry-clutch transmission with cooling techniques |
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2017
- 2017-02-24 CN CN201710102916.1A patent/CN106839085B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0902239A2 (en) * | 1997-09-13 | 1999-03-17 | OTTO HEAT Heizungs-, Energie- und Anlagentechnik GmbH & Co., KG | Fluid actuated pressure control device |
| CN103671047A (en) * | 2013-12-13 | 2014-03-26 | 新界泵业集团股份有限公司 | Electric pump with controller and control method of electric pump |
| CN105275791A (en) * | 2015-11-13 | 2016-01-27 | 皇明太阳能股份有限公司 | Automatic water pump operation fault removal and control method |
| CN105696650A (en) * | 2016-03-30 | 2016-06-22 | 唐若权 | Intelligent water supply system with hot water supply function |
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