CN106885368A - Air-source water heater and its heat exchange fault detection method and device - Google Patents
Air-source water heater and its heat exchange fault detection method and device Download PDFInfo
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- CN106885368A CN106885368A CN201710110659.6A CN201710110659A CN106885368A CN 106885368 A CN106885368 A CN 106885368A CN 201710110659 A CN201710110659 A CN 201710110659A CN 106885368 A CN106885368 A CN 106885368A
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- water heater
- air
- heat exchange
- source water
- blower fan
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of air-source water heater and its heat exchange fault detection method and device, the air-source water heater include blower fan and evaporator, the described method comprises the following steps：When controlling blower fan according to preset rotation speed stable operation, the current working current of blower fan is obtained, and obtain the temperature of evaporator；The temperature of current working current and evaporator according to blower fan judges whether air-source water heater heat exchange failure occurs.The method can be accurately judged to whether air-source water heater heat exchange failure occurs according to the temperature of the current working current of blower fan and evaporator, so as to when there is heat exchange failure, user is reminded to be repaired in time, to ensure that the normal of air-source water heater is heated, while compressor low problem of reliability caused by long-play under bad working environments can be avoided.
Description
Technical field
The present invention relates to household electrical appliance technical field, the heat exchange fault detect side of more particularly to a kind of air-source water heater
Heat exchange failure detector and a kind of air-source water heater with the device of method, a kind of air-source water heater.
Background technology
Air-source water heater is also referred to as " air source hot pump water heater ", and its operation principle is that the low-temperature heat quantity in air is absorbed
Come in, gasify by fluorine medium, then heated up by supercharging after compressor compresses, then feedwater is converted by heat exchanger to be added
Heat.The characteristics of energy-efficient because air-source water heater has, therefore increasing user uses air-source water heater, especially
It is Integral air-source water heater, because it has compact conformation, floor space is small, it is the advantages of overall aesthetic degree is high thus standby
Favored by client.
But, during actual installation, most of users can select that air-source water heater is installed outdoors, so very
It is likely to result in air outlet to be blocked or covered by foreign matter (such as snow and yarn fabric), particularly with the air energy thermal water of top air-out structure
For device, it is easier to cause air outlet to be blocked or cover.
Current technology scheme, when there is above-mentioned situation, can cause evaporator normally to exchange heat, the return-air of compressor
Constant temperature reduction, so as to cause air-source water heater to enter defrost pattern, and after the completion of defrost, may being again introduced into
White pattern, cause air-source water heater cannot normal water heating, and in the extreme circumstances, it is also possible to cause compressor return air
There is liquid hit phenomenon in side.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.
Therefore, the heat exchange fault detection method it is an object of the present invention to propose a kind of air-source water heater, can
The temperature of current working current and evaporator according to blower fan is accurately judged to whether air-source water heater heat exchange failure occurs, from
And can in time remind user to be repaired when there is heat exchange failure, to ensure that the normal of air-source water heater is heated, while
Compressor low problem of reliability caused by long-play under bad working environments can be avoided.
It is another object of the present invention to the heat exchange failure detector for proposing a kind of air-source water heater.
A further object of the present invention is to propose a kind of air-source water heater.
To achieve the above object, the heat exchange fault detect of a kind of air-source water heater that one aspect of the present invention embodiment is proposed
Method, the air-source water heater includes blower fan and evaporator, the described method comprises the following steps：Control the blower fan according to
During preset rotation speed stable operation, the current working current of the blower fan is obtained, and obtain the temperature of the evaporator；According to described
The temperature of the current working current of blower fan and the evaporator judges whether the air-source water heater heat exchange failure occurs.
The heat exchange fault detection method of air-source water heater according to embodiments of the present invention, turns in control blower fan according to default
During fast stable operation, obtain the current working current of blower fan and the temperature of evaporator, and current working current according to blower fan and
The temperature of evaporator judges whether air-source water heater heat exchange failure occurs.The method can be according to the current working current of blower fan
It is accurately judged to whether air-source water heater heat exchange failure occurs with the temperature of evaporator such that it is able to heat exchange failure occurring
When, remind user to be repaired in time, to ensure that the normal of air-source water heater is heated, while compressor can be avoided in severe work
The low problem of reliability caused by long-play under condition.
According to one embodiment of present invention, the current working current and the temperature of the evaporator according to the blower fan
Degree judges whether the water heater heat exchange failure occurs, including：Obtain the volume of the blower fan corresponding with the preset rotation speed
Determine operating current, and judge whether the difference between the rated operational current and the current working current is preset more than first
Threshold value；If the difference between the rated operational current and the current working current is more than first predetermined threshold value,
Determine whether the evaporator in continuous Preset Time temperature whether continuous decrease and at a temperature of depreciation more than second preset
Threshold value；If in the continuous Preset Time evaporator constant temperature decline and at a temperature of depreciation be more than described second
Predetermined threshold value, then judge that heat exchange failure occurs in the air-source water heater.
According to one embodiment of present invention, after judging that heat exchange failure occurs in the air-source water heater, event is also exported
Barrier code, and send alarm.
According to one embodiment of present invention, the blower fan is centrifugal fan.
To achieve the above object, another aspect of the present invention embodiment proposes a kind of heat exchange failure inspection of air-source water heater
Device is surveyed, the air-source water heater includes blower fan and evaporator, and described device includes：First acquisition module, in control
When the blower fan is according to preset rotation speed stable operation, the current working current of blower fan is obtained；Second acquisition module, for obtaining
State the temperature of evaporator；Control module, the control module respectively with modulus block and second acquisition module of winning the first place
It is connected, the control module is used to judge the air according to the current working current of the blower fan and the temperature of the evaporator
Whether energy water heater there is heat exchange failure.
The heat exchange failure detector of air-source water heater according to embodiments of the present invention, turns in control blower fan according to default
During fast stable operation, the current working current of blower fan is obtained by the first acquisition module, the second acquisition module obtains evaporator
Temperature.Control module judges whether air-source water heater heat exchange occurs according to the current working current of blower fan and the temperature of evaporator
Failure.Whether the device can be accurately judged to air-source water heater according to the temperature of the current working current of blower fan and evaporator
There is heat exchange failure such that it is able to when there is heat exchange failure, remind user to be repaired in time, to ensure air-source water heater
It is normal heat, while compressor low problem of reliability caused by long-play under bad working environments can be avoided.
According to one embodiment of present invention, the control module is in the current working current according to the blower fan and described
When the temperature of evaporator judges whether the water heater heat exchange failure occurs, wherein, the control module obtains default with described
The rated operational current of the corresponding blower fan of rotating speed, and judge the rated operational current and the current working current it
Between difference whether be more than the first predetermined threshold value；If the difference between the rated operational current and the current working current
More than first predetermined threshold value, the control module then determines whether that the temperature of the evaporator in continuous Preset Time is
No continuous decrease and at a temperature of depreciation be more than the second predetermined threshold value；If the temperature of the evaporator in the continuous Preset Time
Degree continuous decrease and at a temperature of depreciation be more than second predetermined threshold value, the control module then judges the air energy thermal water
There is heat exchange failure in device.
According to one embodiment of present invention, the heat exchange failure detector of above-mentioned air-source water heater also includes：Report
Alert module, the alarm module is connected with the control module, wherein, the control module is judging the air-source water heater
After there is heat exchange failure, failure code is also exported, and alarm is sent by the alarm module.
According to one embodiment of present invention, the blower fan is centrifugal fan.
Additionally, embodiments of the invention also proposed a kind of air-source water heater, it includes above-mentioned air-source water heater
Heat exchange failure detector.
The air-source water heater of the embodiment of the present invention, by above-mentioned heat exchange failure detector, can be according to blower fan
The temperature of current working current and evaporator is accurately judged to whether air-source water heater heat exchange failure occurs such that it is able to going out
During the failure that now exchanges heat, user is reminded to be repaired in time, to ensure that the normal of air-source water heater is heated, while compression can be avoided
Machine low problem of reliability caused by long-play under bad working environments.
Brief description of the drawings
Fig. 1 is the flow chart of the heat exchange fault detection method of air-source water heater according to embodiments of the present invention；
Fig. 2 is the structural representation of the air-source water heater with top air-out structure according to an embodiment of the invention；
Fig. 3 is the flow chart of the heat exchange fault detection method of air-source water heater according to an embodiment of the invention；
Fig. 4 is the block diagram of the heat exchange failure detector of air-source water heater according to embodiments of the present invention；With
And
Fig. 5 is that the square frame of the heat exchange failure detector of air-source water heater according to an embodiment of the invention is illustrated
Figure.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Heat exchange fault detection method, the air energy of the air-source water heater of the embodiment of the present invention described with reference to the accompanying drawings
Heat exchange failure detector and the air-source water heater with the device of water heater.
Fig. 1 is the flow chart of the heat exchange fault detection method of air-source water heater according to embodiments of the present invention.In this hair
In bright embodiment, air-source water heater may include blower fan and evaporator, wherein, blower fan can be centrifugal fan.
Specifically, by taking the air-source water heater with top air-out structure as an example.As shown in Figure 2, it is contemplated that installing space, heat
The factors such as hydrophone operation noise, it is typically that air-source water heater is installed outdoors, but, so it is easy to by external environment shadow
Ring, for example, air outlet is easy to be covered by foreign matter.If user can not in time have found air outlet by foreign matters from being blocked, and make air
Energy water heater works on, then not only resulting in air-source water heater cannot normally export hot water, can also reduce its reliability.
Due to larger noise can be produced during fan operation, cause user experience poor, so in order to reduce noise,
Consumer's Experience is improved, heat exchange function is generally realized using centrifugal fan.When air outlet is by foreign matters from being blocked, due to centrifugal
The exclusive characteristic of blower fan, drives the motor of centrifugal fan will be in idling conditions, now motor load very little, the work of blower fan
Electric current also very little, also, because centrifugal fan is in idling conditions, it is impossible to normal heat exchange, so that the temperature of evaporator
It is lasting to reduce, therefore the air-out of air-source water heater can be judged according to the temperature of the operating current of centrifugal fan and evaporator
Whether mouth judges whether air-source water heater occur because of foreign matters from being blocked caused by exchange heat failure by foreign matters from being blocked.
As shown in figure 1, the heat exchange fault detection method of the air-source water heater may include following steps：
S1, when controlling blower fan according to preset rotation speed stable operation, obtains the current working current of blower fan, and obtain evaporation
The temperature of device.Wherein, preset rotation speed can be demarcated according to actual conditions.
Specifically, when controlling blower fan according to preset rotation speed stable operation, can be by current sensor real-time detection
The operating current I of blower fanA, and obtain the temperature T of evaporator in real time by being arranged on the temperature sensor at evaporator.
S2, the temperature of current working current and evaporator according to blower fan judges whether air-source water heater heat exchange event occurs
Barrier.
Specifically, when blower fan is according to preset rotation speed stable operation, if detecting the current working current of blower fan very
It is small, and evaporator constant temperature reduction, then illustrate now centrifugal fan in idling conditions, the air-out of centrifugal fan
There is air-out unfavorable condition in mouth, centrifugal fan can not normally exchange heat.
According to one embodiment of present invention, according to blower fan current working current and the temperature of evaporator judges water heater
Whether appearance heat exchange failure, including：The rated operational current of the blower fan corresponding with preset rotation speed is obtained, and judges nominal operation
Whether the difference between electric current and current working current is more than the first predetermined threshold value；If rated operational current and work at present electricity
Difference between stream is more than the first predetermined threshold value, then under determining whether whether the temperature of evaporator in continuous Preset Time continues
Drop and at a temperature of depreciation be more than the second predetermined threshold value；If the constant temperature of evaporator declines and temperature in continuous Preset Time
Drop-out value is more than the second predetermined threshold value, then judge that heat exchange failure occurs in air-source water heater.Wherein, the first predetermined threshold value and second
Predetermined threshold value can be demarcated according to actual conditions.
Specifically, the rated speed of motor under experimental simulation condition of different temperatures can be first passed through, and is obtained and rated speed
The rated operational current of corresponding motor, then stores the rated operational current of acquisition is corresponding with rated speed to memory
((Electrically Erasable Programmable Read Only Memory, band electrically-erasable can be compiled such as EEPROM
Journey read-only storage)) in.
In air-source water heater normal work, the control strategy control blower fan according to air-source water heater turns according to default
Speed operation, after blower fan is according to preset rotation speed even running, start gather blower fan current working current and evaporator it is current
Temperature, and the rated operational current corresponding with current preset rotating speed is obtained from memory.Then, rated operational current is calculated
The difference and current working current of blower fan between, and it is judged.If rated operational current and current working current
Between difference be more than the constant temperature of evaporator in the first predetermined threshold value, and continuous Preset Time and decline and temperature drop
Value is more than the second predetermined threshold value, then illustrate that heat exchange failure occurs in air-source water heater.
Further, according to one embodiment of present invention, it is also defeated after judging that heat exchange failure occurs in air-source water heater
Be out of order code, and sends alarm.
Specifically, after judging that heat exchange failure occurs in air-source water heater, corresponding failure code is exported, and by air
The display device of energy water heater is shown, while carrying out sound and light alarm, is reminded with to user.Now, user can basis
Failure code self checks air outlet situation, if the heat exchange failure that foreign matters from being blocked is caused, user can carry out simple clear
Remove, so as to ensure that the normal of air energy heat exchanger is heated, it is to avoid because minor issue and caused by user cannot just commonly use water and repair people
The problem of the tired on-site maintenance of member, at the same time it can also avoid compressor long-play under bad working environments, causes the compressor can
By the problem of performance reduction, the reliability of whole air-source water heater is improved.
Therefore, the heat exchange fault detection method of air-source water heater according to embodiments of the present invention, can blower fan according to
After default stabilization of speed operation, it is right to be carried out according to the rated operational current under the current working current and standard condition of blower fan
Than, at the same judge the temperature of evaporator within a certain period of time whether continuous decrease and drop-out value is more than certain value.If specified work
Make the difference of current working current of electric current and blower fan more than certain value, and evaporator temperature continue within a certain period of time under
Drop and drop-out value is more than certain value, then illustrate air energy heat exchanger occur because air outlet is blocked and caused by heat exchange failure, and
After breaking down, failure code, and warning reminding user are exported, to facilitate user to carry out checking air outlet according to failure code
Failure situation.
To make those skilled in the art be better understood upon the present invention, Fig. 3 is air according to an embodiment of the invention
The flow chart of the heat exchange fault detection method of energy water heater.As shown in figure 3, the heat exchange fault detection method of the air-source water heater
May include following steps：
S101, air-source water heater works on power.
S102, blower fan reaches default rotating speed, and stable operation.
S103, obtains blower fan current working current IA。
S104, judges rated operational current Is and current working current IABetween difference whether be more than the first predetermined threshold value
ΔI.If it is, performing step S105；If not, return to step S102.
S105, obtains the temperature T of evaporator.
S106, judge evaporator in continuous preset time t temperature whether continuous decrease and at a temperature of depreciation be more than second
Predetermined threshold value Δ T.If it is, performing step S107；If not, return to step S102.
S107, exports failure code, and send alarm.
In sum, the heat exchange fault detection method of air-source water heater according to embodiments of the present invention, in control blower fan
During according to preset rotation speed stable operation, the current working current of blower fan and the temperature of evaporator are obtained, and according to the current of blower fan
The temperature of operating current and evaporator judges whether air-source water heater heat exchange failure occurs.The method being capable of working as according to blower fan
The temperature of preceding operating current and evaporator is accurately judged to whether air-source water heater heat exchange failure occurs such that it is able to occurring
During heat exchange failure, user is reminded to be repaired in time, to ensure that the normal of air-source water heater is heated, while compressor can be avoided
The low problem of reliability caused by long-play under bad working environments.
Fig. 4 is the block diagram of the heat exchange failure detector of air-source water heater according to embodiments of the present invention.
In embodiments of the invention, air-source water heater may include blower fan and evaporator.Wherein, blower fan can be centrifugal fan.
As shown in figure 4, the heat exchange failure detector of the air-source water heater may include：First acquisition module 10, second
Acquisition module 20 and control module 30.
Wherein, the first acquisition module 10 is used to, when controlling blower fan according to preset rotation speed stable operation, obtain working as blower fan
Preceding operating current.Second acquisition module 20 is used to obtain the temperature of evaporator.Control module 30 respectively with modulus block 10 of winning the first place
It is connected with the second acquisition module 20, control module 30 is used to judge empty according to the current working current of blower fan and the temperature of evaporator
Whether gas energy water heater there is heat exchange failure.
Specifically, by taking the air-source water heater with top air-out structure as an example.As shown in Figure 2, it is contemplated that installing space,
The factors such as water heater operation noise, it is typically that air-source water heater is installed outdoors, but, so it is easy to by external environment shadow
Ring, for example, air outlet is easy to be covered by foreign matter.If user can not in time have found air outlet by foreign matters from being blocked, and make air
Energy water heater works on, then not only resulting in air-source water heater cannot normally export hot water, can also reduce its reliability.
Due to larger noise can be produced during fan operation, cause user experience poor, so being made an uproar to reduce
Sound, improves Consumer's Experience, generally realizes heat exchange function using centrifugal fan.When air outlet is by foreign matters from being blocked, due to from
The exclusive characteristic of core type blower fan, drives the motor of centrifugal fan will be in idling conditions, now motor load very little, blower fan
Operating current also very little, also, because centrifugal fan is in idling conditions, it is impossible to normal heat exchange, so that evaporator
Constant temperature reduction, therefore, air-source water heater can be judged according to the temperature of the operating current of centrifugal fan and evaporator
Air outlet whether by foreign matters from being blocked, that is, judge whether air-source water heater occurs because of the failure that exchanged heat caused by foreign matters from being blocked.
When controlling blower fan according to preset rotation speed stable operation, the first acquisition module 10 can be real-time by current sensor
The operating current I of detection blower fanA, the second acquisition module 20 obtains evaporation in real time by being arranged on the temperature sensor at evaporator
The temperature T of device.If the current working current very little of blower fan were detected, and the constant temperature of evaporator would be reduced, then illustrated now
Centrifugal fan in idling conditions, there is air-out unfavorable condition in the air outlet of centrifugal fan, centrifugal fan can not be just
Often heat exchange.
According to one embodiment of present invention, control module 30 is in the current working current and the temperature of evaporator according to blower fan
When degree judges whether water heater heat exchange failure occurs, wherein, control module 30 obtains the volume of the blower fan corresponding with preset rotation speed
Determine operating current, and judge the difference between rated operational current and current working current whether more than the first predetermined threshold value；Such as
Difference between fruit rated operational current and current working current is more than the first predetermined threshold value, and control module 30 is then determined whether
In continuous Preset Time the temperature of evaporator whether continuous decrease and at a temperature of depreciation be more than the second predetermined threshold value；If continuous
In Preset Time the constant temperature of evaporator decline and at a temperature of depreciation be more than the second predetermined threshold value, control module 30 then judges
There is heat exchange failure in air-source water heater.
Specifically, the rated speed of motor under experimental simulation condition of different temperatures can be first passed through, and is obtained and rated speed
The rated operational current of corresponding motor, then stores the rated operational current of acquisition is corresponding with rated speed to memory
In (such as EEPROM).
In air-source water heater normal work, the control strategy control blower fan according to air-source water heater turns according to default
Speed operation, after blower fan is according to preset rotation speed even running, the first acquisition module 10 starts to obtain the current working current of blower fan,
Second acquisition module 20 starts to obtain the temperature of evaporator, and is obtained from memory corresponding with current preset rotating speed specified
Operating current.Then control module 30 calculates the difference between rated operational current and blower fan current working current, and it is entered
Row judges.If the difference between rated operational current and current working current is more than the first predetermined threshold value, and continuously presets
In time the constant temperature of evaporator decline and at a temperature of depreciation be more than the second predetermined threshold value, control module 30 then judges air
Can water heater appearance heat exchange failure.
Fig. 5 is that the square frame of the heat exchange failure detector of air-source water heater according to an embodiment of the invention is illustrated
Figure.As shown in figure 5, the heat exchange failure detector of the air-source water heater also includes：Alarm module 40, wherein, alarm module
40 are connected with control module 30, and control module 30 also exports failure code after judging that heat exchange failure occurs in air-source water heater,
And alarm is sent by alarm module 40.
Specifically, after control module 30 judges that heat exchange failure occurs in air-source water heater, corresponding failure code is exported,
And the display device by air-source water heater is shown, while sending report by alarm module 40 (such as sound and light alarm module)
Alert prompting.Now, user can self check air outlet situation according to failure code, if foreign matters from being blocked and the heat exchange that causes therefore
Barrier, user can simply be removed, so as to ensure that the normal of air energy heat exchanger is heated, it is to avoid because minor issue and caused by use
Family cannot just commonly use the problem of water and maintenance personal's fatigue on-site maintenance, at the same time it can also avoid compressor under bad working environments
Long-play, the problem for causing compressor reliability to reduce improves the reliability of whole air-source water heater.
Therefore, the heat exchange failure detector of air-source water heater according to embodiments of the present invention, can blower fan according to
After default stabilization of speed operation, it is right to be carried out according to the rated operational current under the current working current and standard condition of blower fan
Than, at the same judge the temperature of evaporator within a certain period of time whether continuous decrease and drop-out value is more than certain value.If specified work
Make the difference of current working current of electric current and blower fan more than certain value, and evaporator temperature continue within a certain period of time under
Drop and drop-out value is more than certain value, then illustrate air energy heat exchanger occur because air outlet is blocked and caused by heat exchange failure, and
After breaking down, failure code, and warning reminding user are exported, to facilitate user to carry out checking air outlet according to failure code
Failure situation.
In sum, the heat exchange failure detector of air-source water heater according to embodiments of the present invention, in control blower fan
During according to preset rotation speed stable operation, the current working current of blower fan is obtained by the first acquisition module, the second acquisition module is obtained
Take the temperature of evaporator.Control module judges that air-source water heater is according to the current working current of blower fan and the temperature of evaporator
It is no heat exchange failure occur.The device can be accurately judged to air energy according to the temperature of the current working current of blower fan and evaporator
Whether water heater there is heat exchange failure such that it is able to when there is heat exchange failure, reminds user to be repaired in time, to ensure sky
The normal of gas energy water heater is heated, while can avoid that compressor reliability caused by long-play under bad working environments is low to ask
Topic.
Additionally, embodiments of the invention also proposed a kind of air-source water heater, it includes above-mentioned air-source water heater
Heat exchange failure detector.
The air-source water heater of the embodiment of the present invention, by above-mentioned heat exchange failure detector, can be according to blower fan
The temperature of current working current and evaporator is accurately judged to whether air-source water heater heat exchange failure occurs such that it is able to going out
During the failure that now exchanges heat, user is reminded to be repaired in time, to ensure that the normal of air-source water heater is heated, while compression can be avoided
Machine low problem of reliability caused by long-play under bad working environments.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, must rather than the device or element for indicating or imply meaning
With specific orientation, with specific azimuth configuration and operation, therefore must be not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " is meant that at least two, such as two, three
It is individual etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be with
It is the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (9)
1. the heat exchange fault detection method of a kind of air-source water heater, it is characterised in that the air-source water heater includes blower fan
And evaporator, the described method comprises the following steps：
When controlling the blower fan according to preset rotation speed stable operation, the current working current of the blower fan is obtained, and obtain institute
State the temperature of evaporator；
The temperature of current working current and the evaporator according to the blower fan judges whether the air-source water heater occurs
Heat exchange failure.
2. the heat exchange fault detection method of air-source water heater as claimed in claim 1, it is characterised in that described in the basis
The temperature of the current working current of blower fan and the evaporator judges whether the water heater heat exchange failure occurs, including：
Obtain the rated operational current of the blower fan corresponding with the preset rotation speed, and judge the rated operational current with
Whether the difference between the current working current is more than the first predetermined threshold value；
If the difference between the rated operational current and the current working current is more than first predetermined threshold value, enter
One step judge the evaporator in continuous Preset Time temperature whether continuous decrease and at a temperature of depreciation more than the second default threshold
Value；
If in the continuous Preset Time constant temperature of the evaporator decline and at a temperature of depreciation more than described second pre-
If threshold value, then judge that heat exchange failure occurs in the air-source water heater.
3. the heat exchange fault detection method of air-source water heater as claimed in claim 1 or 2, it is characterised in that judging
After stating air-source water heater appearance heat exchange failure, failure code is also exported, and send alarm.
4. the heat exchange fault detection method of air-source water heater as claimed in claim 1, it is characterised in that the blower fan be from
Core type blower fan.
5. the heat exchange failure detector of a kind of air-source water heater, it is characterised in that the air-source water heater includes blower fan
And evaporator, described device includes：
First acquisition module, for when controlling the blower fan according to preset rotation speed stable operation, obtaining the work at present of blower fan
Electric current；
Second acquisition module, the temperature for obtaining the evaporator；
Control module, the control module wins the first place modulus block and second acquisition module is connected, the control with described respectively
Molding block is used to judge that the air-source water heater is according to the current working current of the blower fan and the temperature of the evaporator
It is no heat exchange failure occur.
6. the heat exchange failure detector of air-source water heater as claimed in claim 5, it is characterised in that the control module
Judge whether the water heater heat exchange failure occurs in the temperature of the current working current according to the blower fan and the evaporator
When, wherein,
The control module obtains the rated operational current of the blower fan corresponding with the preset rotation speed, and judges the volume
Whether the difference between operating current and the current working current is determined more than the first predetermined threshold value；
If the difference between the rated operational current and the current working current is more than first predetermined threshold value, described
Control module then determine whether the evaporator in continuous Preset Time temperature whether continuous decrease and at a temperature of depreciation it is big
In the second predetermined threshold value；
If in the continuous Preset Time constant temperature of the evaporator decline and at a temperature of depreciation more than described second pre-
If threshold value, the control module then judges that heat exchange failure occurs in the air-source water heater.
7. the heat exchange failure detector of the air-source water heater as described in claim 5 or 6, it is characterised in that also include：
Alarm module, the alarm module is connected with the control module, wherein, the control module is judging the air energy
After heat exchange failure occurs in water heater, failure code is also exported, and alarm is sent by the alarm module.
8. the heat exchange failure detector of air-source water heater as claimed in claim 5, it is characterised in that the blower fan be from
Core type blower fan.
9. a kind of air-source water heater, it is characterised in that including the air-source water heater as any one of claim 5-8
Heat exchange failure detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710110659.6A CN106885368B (en) | 2017-02-28 | 2017-02-28 | Heat exchange fault detection method for air energy water heater due to blockage of air outlet by foreign matter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710110659.6A CN106885368B (en) | 2017-02-28 | 2017-02-28 | Heat exchange fault detection method for air energy water heater due to blockage of air outlet by foreign matter |
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| CN106885368B CN106885368B (en) | 2020-06-05 |
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| CN107290069A (en) * | 2017-07-10 | 2017-10-24 | 佛山杰致信息科技有限公司 | A kind of transformer temperature monitoring device and its monitoring method |
| CN107388632A (en) * | 2017-07-25 | 2017-11-24 | 广东美的暖通设备有限公司 | Control method, control system and the air source heat pump of air source heat pump |
| CN109899992A (en) * | 2019-03-18 | 2019-06-18 | 广东芬尼科技股份有限公司 | Water heater and its detection method based on sensor detection blower fan failure |
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| CN105352238A (en) * | 2015-11-18 | 2016-02-24 | 珠海格力电器股份有限公司 | Heat pump evaporator heat exchange abnormity judgment method, heat pump evaporator and water heater |
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|---|---|
| CN106885368B (en) | 2020-06-05 |
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