CN107192135A - The fault detection method and device of heat pump water-heating machine and its water tank temperature sensor - Google Patents
The fault detection method and device of heat pump water-heating machine and its water tank temperature sensor Download PDFInfo
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- CN107192135A CN107192135A CN201710458368.6A CN201710458368A CN107192135A CN 107192135 A CN107192135 A CN 107192135A CN 201710458368 A CN201710458368 A CN 201710458368A CN 107192135 A CN107192135 A CN 107192135A
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/022—Means for indicating or recording specially adapted for thermometers for recording
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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a kind of heat pump water-heating machine and its fault detection method and device of water tank temperature sensor, it the described method comprises the following steps：The temperature gap between the water temperature detected value of the first temperature sensor and the water temperature detected value of second temperature sensor is obtained, and the absolute value of temperature gap is judged；When the absolute value of temperature gap is more than preset temperature threshold value and continues preset time, judge whether the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor；If it is, judging that the first temperature sensor breaks down, and heat pump water-heating machine is controlled according to the water temperature detected value of second temperature sensor；If it is not, then judging that second temperature sensor breaks down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor.Thus, it is possible to ensure that heat pump water-heating machine can continue to operation, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves user satisfaction.
Description
Technical field
The present invention relates to technical field of heat pumps, the failure of water tank temperature sensor is examined in more particularly to a kind of heat pump water-heating machine
The failure detector of water tank temperature sensor and one kind have the failure detector in survey method, a kind of heat pump water-heating machine
Heat pump water-heating machine.
Background technology
Generally, water tank temperature sensor, heat pump can be set in the heating water tank of integrated water heater (such as heat pump water-heating machine)
The water tank temperature value that hot water machine is detected according to water tank temperature sensor carries out computer heating control.But, during long-time use,
It is possible that temperature sensor is soaked or short circuit phenomenon, temperature sensor fails are caused, this allows for showing on hot water machine
Temperature value be significantly larger than actual temperature value, even up to 100 DEG C, so as to cause heat pump water-heating machine normally to use.If
User belongs to remote districts or machine after-sales service needs the temperature that waits many talentes more to be renewed not in time, then
Sensor, then user is waiting the maintenance period just to can use without hot water, so as to reduce user satisfaction.
The content of the invention
It is contemplated that at least solving one of technical problem in above-mentioned technology to a certain extent.Therefore, the present invention
First purpose is the fault detection method for proposing water tank temperature sensor in a kind of heat pump water-heating machine, can judge two
During temperature sensor fails in temperature sensor, according to the water temperature detected value of another temperature sensor to heat-pump hot-water
Machine is controlled, so as to avoid heat pump water-heating machine from can not running for a long time, it is ensured that user is waiting the maintenance period, still there is heat
Water can be used, and improve user satisfaction.
Second object of the present invention is to propose a kind of computer-readable recording medium.
Third object of the present invention is the fault detect dress for proposing water tank temperature sensor in a kind of heat pump water-heating machine
Put.
Fourth object of the present invention is to propose a kind of heat pump water-heating machine.
To reach above-mentioned purpose, first aspect present invention embodiment proposes water tank TEMP in a kind of heat pump water-heating machine
The fault detection method of device, the heat pump water-heating machine includes boiler, and the first temperature sensor and the are set in the boiler
Two temperature sensors and electric heater unit, the electric heater unit are used to carry out auxiliary heating, the electricity to the boiler
Heater is used to carry out the boiler auxiliary heating, and first temperature sensor is used to detect electric in the boiler
The water temperature on heater top, the second temperature sensor is used for the water for detecting electric heater unit bottom in the boiler
Temperature, the fault detection method comprises the following steps：Obtain the water temperature detected value and described second of first temperature sensor
Temperature gap between the water temperature detected value of temperature sensor, and the absolute value of the temperature gap is judged；When described
When the absolute value of temperature gap is more than preset temperature threshold value and continues preset time, the water temperature of first temperature sensor is judged
Whether detected value is more than the water temperature detected value of the second temperature sensor；If the water temperature detection of first temperature sensor
Value then judges that first temperature sensor breaks down more than the water temperature detected value of the second temperature sensor, and according to
The water temperature detected value of the second temperature sensor is controlled to the heat pump water-heating machine；If first temperature sensor
Water temperature detected value be less than the water temperature detected value of the second temperature sensor, then judge the second temperature sensor occur therefore
Barrier, and the heat pump water-heating machine is controlled according to the water temperature detected value of first temperature sensor.
The fault detection method of water tank temperature sensor in heat pump water-heating machine according to embodiments of the present invention, obtains in real time
Temperature gap between the water temperature detected value of one temperature sensor and the water temperature detected value of second temperature sensor, and to temperature difference
The absolute value of value judged, and when the absolute value of temperature gap is more than preset temperature threshold value and continues preset time, such as
Fruit judges that the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor, then judges the first temperature
Sensor failure, and heat pump water-heating machine is controlled according to the water temperature detected value of second temperature sensor；If it is determined that
The water temperature detected value of first temperature sensor is less than the water temperature detected value of second temperature sensor, then judges second temperature sensor
Break down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor.Thus, it is possible to ensure heat
One in two temperature sensors of pump hot water machine can normally run when breaking down, it is to avoid because temperature sensor fault
And causing heat pump water-heating machine can not run for a long time, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves and uses
Family satisfaction.
According to one embodiment of present invention, when the absolute value of the temperature gap is less than or equal to the preset temperature threshold value
When, judge that first temperature sensor and the second temperature sensor do not break down, and control the heat-pump hot-water
Machine keeps normal operating condition.
According to one embodiment of present invention, when the heat pump water-heating machine keeps normal operating condition, according to described the
The water temperature detected value of one temperature sensor is controlled to the electric heater unit, and according to the water of the second temperature sensor
Temperature detector measured value is controlled to the coolant circulating system of the heat pump water-heating machine.
According to one embodiment of present invention, the preset temperature threshold value can be 8-12 DEG C, and the preset time can be with
For 2-5 minutes.
To reach above-mentioned purpose, second aspect of the present invention embodiment proposes a kind of computer-readable recording medium, had
Instruction therein is stored in, when executed, the heat pump water-heating machine performs above-mentioned fault detection method.
The computer-readable recording medium of the embodiment of the present invention, the above-mentioned fault detection method by performing, it is ensured that
One in two temperature sensors of heat pump water-heating machine can normally run when breaking down, it is to avoid because temperature sensor therefore
Hinder and cause heat pump water-heating machine can not run for a long time, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves
User satisfaction.
To reach above-mentioned purpose, third aspect present invention embodiment proposes water tank TEMP in a kind of heat pump water-heating machine
The failure detector of device, the heat pump water-heating machine includes boiler, and the first temperature sensor and the are set in the boiler
Two temperature sensors and electric heater unit, the electric heater unit are used to carry out the boiler auxiliary heating, described the
One temperature sensor is used for the water temperature for detecting electric heater unit top in the boiler, and the second temperature sensor is used to examine
The water temperature of electric heater unit bottom in the boiler is surveyed, the failure detector includes：Acquisition module, it is described for obtaining
Temperature gap between the water temperature detected value of first temperature sensor and the water temperature detected value of the second temperature sensor；Judge
Module, judges for the absolute value to the temperature gap, and is more than preset temperature in the absolute value of the temperature gap
Also judge whether the water temperature detected value of first temperature sensor is more than the second temperature when threshold value and lasting preset time
The water temperature detected value of sensor；Control module, is more than described second for the water temperature detected value in first temperature sensor
Judge that first temperature sensor breaks down during the water temperature detected value of temperature sensor, and sensed according to the second temperature
The water temperature detected value of device is controlled to the heat pump water-heating machine, and small in the water temperature detected value of first temperature sensor
Judge that the second temperature sensor breaks down when the water temperature detected value of the second temperature sensor, and according to described
The water temperature detected value of one temperature sensor is controlled to the heat pump water-heating machine.
The failure detector of water tank temperature sensor in heat pump water-heating machine according to embodiments of the present invention, by obtaining mould
Block obtains the temperature difference between the water temperature detected value of the first temperature sensor and the water temperature detected value of second temperature sensor in real time
Value, judge module judged the absolute value of temperature gap, and temperature gap absolute value more than preset temperature threshold value and
When continuing preset time, also judge whether the water temperature detected value of the first temperature sensor is more than the water temperature inspection of second temperature sensor
Measured value.Wherein, when the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor, mould is controlled
Block judges that the first temperature sensor breaks down, and heat pump water-heating machine is carried out according to the water temperature detected value of second temperature sensor
Control；When the water temperature detected value of the first temperature sensor is less than the water temperature detected value of second temperature sensor, control module is sentenced
Disconnected second temperature sensor is broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor
System.Thus, it is possible to ensure normally to run when one in two temperature sensors of heat pump water-heating machine breaks down, it is to avoid
Cause heat pump water-heating machine can not run for a long time because of temperature sensor fault, it is ensured that user is waiting the maintenance period, still has
Hot water can be used, and improve user satisfaction.
According to one embodiment of present invention, when the absolute value of the temperature gap is less than or equal to the preset temperature threshold value
When, the control module is additionally operable to judge that first temperature sensor and the second temperature sensor do not break down,
And control the heat pump water-heating machine to keep normal operating condition.
According to one embodiment of present invention, when the heat pump water-heating machine keeps normal operating condition, the control mould
Block is additionally operable to be controlled the electric heater unit according to the water temperature detected value of first temperature sensor, and according to described
The water temperature detected value of second temperature sensor is controlled to the coolant circulating system of the heat pump water-heating machine.
According to one embodiment of present invention, the preset temperature threshold value can be 8-12 DEG C, and the preset time can be with
For 2-5 minutes.
To reach above-mentioned purpose, fourth aspect present invention embodiment proposes a kind of heat pump water-heating machine, and it is included according to upper
The failure detector of water tank temperature sensor in the heat pump water-heating machine stated.
The heat pump water-heating machine of the embodiment of the present invention, can be with by the failure detector of above-mentioned water tank temperature sensor
Ensure that one in two temperature sensors can normally be run when breaking down, it is to avoid lead because of temperature sensor fault
The long-time of cause can not be run, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves user satisfaction.
Brief description of the drawings
Fig. 1 is the system construction drawing of heat pump water-heating machine according to an embodiment of the invention；
Fig. 2 is the fault detection method of water tank temperature sensor in heat pump water-heating machine according to an embodiment of the invention
Flow chart；
Fig. 3 is the fault detection method of water tank temperature sensor in heat pump water-heating machine in accordance with another embodiment of the present invention
Flow chart；And
Fig. 4 is the failure detector of water tank temperature sensor in heat pump water-heating machine according to an embodiment of the invention
Block diagram.
Reference：
Boiler 10, electric heater unit 11, water inlet pipe 12, outlet pipe 13, indoor heat exchanger 20, restricting element 21, drying
Screen pack 22, compressor 30 and four-way valve 31.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and be not considered as limiting the invention.
Water tank temperature sensor in the heat pump water-heating machine proposed according to embodiments of the present invention described below in conjunction with the accompanying drawings
The failure detector of water tank temperature sensor and with the failure detector in fault detection method, heat pump water-heating machine
Heat pump water-heating machine.
In an embodiment of the present invention, as shown in figure 1, heat pump water-heating machine may include to set in boiler 10, boiler 10
First temperature sensor and second temperature sensor and electric heater unit 11, electric heater unit 11 are used to carry out boiler 10
Auxiliary heating, the first temperature sensor is used for the water temperature for detecting the top of electric heater unit 11 in boiler 10, second temperature sensing
Device is used for the water temperature for detecting the bottom of electric heater unit 11 in boiler 10, wherein, the He of water inlet pipe 12 is additionally provided with boiler 10
Outlet pipe 13.Specifically, as shown in figure 1, heat pump water-heating machine may also include compressor 30, four-way valve 31, evaporator 20, throttling member
Part 21 and device for drying and filtering 22.Wherein, the exhaust outlet of compressor 30 is connected with the A ends of four-way valve 31, and the B ends of four-way valve 31 are with changing
Hot coil is (not specifically illustrated in figure) to be connected, and heat exchange coil can be wrapped on boiler 10, for entering to the water in boiler 10
Row heating, the C-terminal of four-way valve 31 is connected with the gas returning port of compressor 30, and the D ends of four-way valve 31 are connected with one end of evaporator 20,
The other end of evaporator 20 is connected to heat exchange coil by restricting element 21 (such as electric expansion valve) and device for drying and filtering 22.
In heat pump water-heating machine water heating, the high pressure gaseous refrigerant come out from compressor 30, by four-way valve 31
AB ends enter heat exchange coil and carry out condensing heat-exchange, to be heated to the water in boiler 10, then after the throttling of restricting element 21
Evaporated into evaporator 20, compressor 30 returned to finally by the DC ends of four-way valve 31, by refrigerant is constantly circulated and with
The water of boiler carries out heat exchange, and the water in boiler 10 is heated.
That is, cold water enters boiler 10 from the water inlet pipe 12 (bottom of boiler 10) of boiler 10, by with
The HTHP refrigerant that heat pump is produced is exchanged heat, to realize heating, outlet pipe 13 (heat of the hot water after heating from boiler 10
The top of water tank 10) outflow, provide the user hot water.
It is right usually using electric heater unit 11 (also known as electric auxiliary heat) when outdoor environment temperature relatively low (winter temperature is very low)
Boiler 10 carries out auxiliary heating, to ensure to disclosure satisfy that user's request from the hot water that outlet pipe is gone out, while in low temperature condition
Lower electric heater unit 11 of opening can also improve the service life of compressor to a certain extent (during mainly due to compression captain
Between run at low temperatures, can cause compressor it is a certain degree of damage).So the water temperature and electricity on the top of electric heater unit 11
The water temperature of the bottom of heater 11 is slightly different, and it is electric in boiler 10 to detect respectively to generally require two temperature sensors of setting
The water temperature on the top of heater 11 and the water temperature of the bottom of electric heater unit 11.Wherein, under normal circumstances on electric heater unit 11
The water temperature in portion is higher than the water temperature of the bottom of electric heater unit 11.
Wherein, when there is a failure in two temperature sensors in boiler 10, if directly controlling heat-pump hot-water
Machine is stopped, then user can be caused to wait the maintenance period available without hot water, CSAT is reduced.Therefore, it is of the invention
A kind of fault detection method of water tank temperature sensor in heat pump water-heating machine is proposed, be can interpolate that out in two temperature sensors
Which break down, and two in boiler temperature sensor have one failure when, according to another temperature sensor
Water temperature detected value heat pump water-heating machine is controlled.
Fig. 2 is the fault detection method of water tank temperature sensor in heat pump water-heating machine according to an embodiment of the invention
Flow chart.As shown in Fig. 2 the fault detection method of water tank temperature sensor may include in the heat pump water-heating machine of the embodiment of the present invention
Following steps：
S1, obtains the temperature between the water temperature detected value of the first temperature sensor and the water temperature detected value of second temperature sensor
Difference is spent, and the absolute value of temperature gap is judged.
S2, when the absolute value of temperature gap is more than preset temperature threshold value and continues preset time, judges that the first temperature is passed
Whether the water temperature detected value of sensor is more than the water temperature detected value of second temperature sensor.Wherein, preset temperature threshold value and it is default when
Between can be demarcated according to actual conditions, for example, preset temperature threshold value can be 8-12 DEG C, preset time can be 2-5 minutes.
According to one embodiment of present invention, when the absolute value of temperature gap is less than or equal to preset temperature threshold value, judge
First temperature sensor and second temperature sensor do not break down, and control heat pump water-heating machine to keep normal operating condition.
S3, if the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor, sentences
Disconnected first temperature sensor is broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of second temperature sensor
System.
S4, if the water temperature detected value of the first temperature sensor is less than the water temperature detected value of second temperature sensor, sentences
Disconnected second temperature sensor is broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor
System.
Specifically, water temperature detection is obtained by being arranged on first temperature sensor on electric heater unit top in boiler
Value, is designated as T5U, and obtains water temperature detected value by the second temperature sensor for being arranged on electric heater unit bottom in boiler,
T5L is designated as, the difference between T5U and T5L is then calculated, and right | T5U-T5L | judge.
When | T5U-T5L | during≤preset temperature threshold value (such as 10 DEG C), illustrate two temperature of electric heater unit upper and lower part
The water temperature detected value that degree sensor is obtained is more or less the same, and belongs to normal range (NR), judges that the first temperature sensor and second temperature are passed
Sensor does not break down, now, and control Teat pump boiler keeps normal operating condition；When | T5U-T5L | 10 DEG C of ＞, and continue
During preset time (such as 2 minutes), illustrate that the first temperature sensor or second temperature sensor break down (due to electric heater unit
The water temperature on top and the water temperature of electric heater unit bottom are more or less the same), judging the first temperature sensor or second temperature sensing
After device breaks down, then by comparing T5U and T5L size, to judge that failure judgement is derived from the first temperature sensor also
It is second temperature sensor.
Wherein, as T5U ＞ T5L, illustrate that the source of failure, in the first temperature sensor, now obtains the first temperature sensor
Substitution value, because T5U and T5L is more or less the same under normal circumstances, thus can using T5L as T5U substitution value, and according to
T5L is controlled to heat pump water-heating machine；As T5U ＜ T5L, illustrate the source of failure in second temperature sensor, now obtain
The substitution value of two temperature sensors, similarly, because T5L and T5U is more or less the same under normal circumstances, thus can using T5U as
T5L substitution value, and heat pump water-heating machine is controlled according to T5U.
Therefore, in heat pump water-heating machine according to embodiments of the present invention water tank temperature sensor fault detection method, in heat
In the case of having a failure in the temperature sensor of water tank, it also can guarantee that machine is continued to run with, it is ensured that user is waiting to be repaired
Period still has hot water can use, and increases customer satisfaction degree.
According to one embodiment of present invention, when heat pump water-heating machine keeps normal operating condition, passed according to the first temperature
The water temperature detected value of sensor is controlled to electric heater unit, and according to the water temperature detected value of second temperature sensor to Heat Pump
The coolant circulating system of water dispenser is controlled.
Specifically, (heat pump water-heating machine keeps normal fortune during the equal normal work of two temperature sensors in boiler
Row state), the water temperature on electric heater unit top is detected by the first temperature sensor, and electricity is controlled according to upper water temperature detector measured value
Heater is turned on and off, for example, when the water temperature on electric heater unit top meets the demand of user enough (such as summer),
Controllable electric heater unit is closed；When the water temperature on electric heater unit top is not up to user's design temperature, it can control
Electric heater unit is in opening, to carry out auxiliary heating to boiler.Meanwhile, added by second temperature sensor detection electricity
The water temperature of thermal bottom, and the coolant circulating system of heat pump water-heating machine is controlled according to bottom water temperature detected value, for example, when electricity
, can be by tuning up the aperture of restricting element, to increase the high-temperature gas for flowing into boiler when the water temperature of heater bottom is relatively low
The flow of refrigerant, is heated with the water to boiler；, can be by turning throttling down when the water temperature of electric heater unit bottom is higher
The aperture of element, to reduce the flow for the high-temperature gas refrigerant for flowing into boiler.
In addition, in an embodiment of the present invention, when judging that temperature sensor breaks down, obtaining water temperature substitution value
Meanwhile, fault alarm prompting is also sent, and show on the display interface of heat pump water-heating machine failure code, e.g., failure code E1
The first temperature sensor fault is represented, failure code E2 represents second temperature sensor failure, can not only so remind in time
User repairs, and also facilitates maintenance personal to be repaired.
Fig. 3 is the fault detection method of water tank temperature sensor in heat pump water-heating machine in accordance with another embodiment of the present invention
Flow chart.As shown in figure 3, the fault detection method of water tank temperature sensor may include following steps in the heat pump water-heating machine：
S101, heat pump water-heating machine start operation.
S102, obtains the water temperature T 5U and the water temperature of electric heater unit bottom on electric heater unit top in boiler respectively
T5L。
S103, calculates the difference between T5U and T5L.
S104, judges | T5U-T5L | ＞ preset temperatures threshold value (such as 10 DEG C), and whether continue preset time (such as 2 minutes)
Set up.If it is, performing step S106；If not, performing step S105.
S105, is controlled according to machine normal control logic.
S106, judges whether T5U ＞ T5L set up.If it is, performing step S107；If not, performing step S108.
S107, shows the first temperature sensor fault, and heat pump water-heating machine is controlled according to T5L.
S108, shows second temperature sensor failure, and heat pump water-heating machine is controlled according to T5U.
In summary, in heat pump water-heating machine according to embodiments of the present invention water tank temperature sensor fault detection method,
The temperature gap between the water temperature detected value of the first temperature sensor and the water temperature detected value of second temperature sensor is obtained in real time,
And the absolute value of temperature gap is judged, and be more than preset temperature threshold value in the absolute value of temperature gap and persistently preset
During the time, if it is determined that the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor, then sentence
Disconnected first temperature sensor is broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of second temperature sensor
System；If it is determined that the water temperature detected value of the first temperature sensor is less than the water temperature detected value of second temperature sensor, then the is judged
Two temperature sensors are broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor.By
This, it is ensured that one in two temperature sensors of heat pump water-heating machine can normally run when breaking down, it is to avoid because
Temperature sensor fault and cause heat pump water-heating machine for a long time can not run, it is ensured that user wait the maintenance period, still have hot water
It can use, improve user satisfaction.
Fig. 4 is the failure detector of water tank temperature sensor in heat pump water-heating machine according to an embodiment of the invention
Block diagram.
In an embodiment of the present invention, heat pump water-heating machine may include to set the first temperature to pass in boiler 10, boiler 10
Sensor and second temperature sensor and electric heater unit 11, electric heater unit 11 are used to carry out auxiliary heating to boiler 10,
First temperature sensor is used for the water temperature for detecting the top of electric heater unit 11 in boiler 10, and second temperature sensor is used to detect
The water temperature of the bottom of electric heater unit 11 in boiler 10.
As shown in figure 4, the failure detector of water tank temperature sensor can be wrapped in the heat pump water-heating machine of the embodiment of the present invention
Include：Acquisition module 100, judge module 200 and control module 300.
Wherein, acquisition module 100 is used for the water temperature detected value and second temperature sensor for obtaining the first temperature sensor
Temperature gap between water temperature detected value.Judge module 200 is used to judge the absolute value of temperature gap, and in temperature difference
When the absolute value of value is more than preset temperature threshold value and continues preset time, also judging the water temperature detected value of the first temperature sensor is
The no water temperature detected value more than second temperature sensor.Control module 300 is used for the water temperature detected value in the first temperature sensor
More than second temperature sensor water temperature detected value when, judge that the first temperature sensor breaks down, and pass according to second temperature
The water temperature detected value of sensor is controlled to heat pump water-heating machine, and is less than second in the water temperature detected value of the first temperature sensor
During the water temperature detected value of temperature sensor, judge that second temperature sensor breaks down, and according to the water of the first temperature sensor
Temperature detector measured value is controlled to heat pump water-heating machine.
According to one embodiment of present invention, when the absolute value of temperature gap is less than or equal to preset temperature threshold value, control
Module 300 is additionally operable to judge that the first temperature sensor and second temperature sensor do not break down, and controls heat pump water-heating machine
Keep normal operating condition.
According to one embodiment of present invention, when heat pump water-heating machine keeps normal operating condition, control module 300 is also used
Electric heater unit 11 is controlled in the water temperature detected value according to the first temperature sensor, and according to second temperature sensor
Water temperature detected value is controlled to the coolant circulating system of heat pump water-heating machine.
According to one embodiment of present invention, preset temperature threshold value can be 8-12 DEG C, and preset time can be 2-5 points
Clock.
It should be noted that in the heat pump water-heating machine of the embodiment of the present invention in the failure detector of water tank temperature sensor
The details not disclosed, refer in the heat pump water-heating machine of the embodiment of the present invention institute in the fault detection method of water tank temperature sensor
The details of disclosure, is specifically repeated no more here.
The failure detector of water tank temperature sensor in heat pump water-heating machine according to embodiments of the present invention, by obtaining mould
Block obtains the temperature difference between the water temperature detected value of the first temperature sensor and the water temperature detected value of second temperature sensor in real time
Value, judge module judged the absolute value of temperature gap, and temperature gap absolute value more than preset temperature threshold value and
When continuing preset time, also judge whether the water temperature detected value of the first temperature sensor is more than the water temperature inspection of second temperature sensor
Measured value.Wherein, when the water temperature detected value of the first temperature sensor is more than the water temperature detected value of second temperature sensor, mould is controlled
Block judges that the first temperature sensor breaks down, and heat pump water-heating machine is carried out according to the water temperature detected value of second temperature sensor
Control；When the water temperature detected value of the first temperature sensor is less than the water temperature detected value of second temperature sensor, control module is sentenced
Disconnected second temperature sensor is broken down, and heat pump water-heating machine is controlled according to the water temperature detected value of the first temperature sensor
System.Thus, it is possible to ensure normally to run when one in two temperature sensors of heat pump water-heating machine breaks down, it is to avoid
Cause heat pump water-heating machine can not run for a long time because of temperature sensor fault, it is ensured that user is waiting the maintenance period, still has
Hot water can be used, and improve user satisfaction.
In addition, embodiments of the invention also proposed a kind of computer-readable recording medium, with being stored in finger therein
Order, when executed, heat pump water-heating machine perform above-mentioned fault detection method.
The computer-readable recording medium of the embodiment of the present invention, the above-mentioned fault detection method by performing, it is ensured that
One in two temperature sensors of heat pump water-heating machine can normally run when breaking down, it is to avoid because temperature sensor therefore
Hinder and cause heat pump water-heating machine can not run for a long time, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves
User satisfaction.
In addition, embodiments of the invention also proposed a kind of heat pump water-heating machine, it is included according to above-mentioned heat pump water-heating machine
The failure detector of middle water tank temperature sensor.
The heat pump water-heating machine of the embodiment of the present invention, can be with by the failure detector of above-mentioned water tank temperature sensor
Ensure that one in two temperature sensors can normally be run when breaking down, it is to avoid lead because of temperature sensor fault
The long-time of cause can not be run, it is ensured that user is waiting the maintenance period, still has hot water to use, and improves user satisfaction.
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 the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
In addition, 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 " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Any process described otherwise above or method description are construed as in flow chart or herein, represent to include
Module, fragment or the portion of the code of one or more executable instructions for the step of realizing custom logic function or process
Point, and the scope of the preferred embodiment of the present invention includes other realization, wherein can not be by shown or discussion suitable
Sequence, including according to involved function by it is basic simultaneously in the way of or in the opposite order, carry out perform function, this should be of the invention
Embodiment person of ordinary skill in the field understood.
Represent in flow charts or logic and/or step described otherwise above herein, for example, being considered use
In the order list for the executable instruction for realizing logic function, it may be embodied in any computer-readable medium, for
Instruction execution system, device or equipment (such as computer based system including the system of processor or other can be held from instruction
The system of row system, device or equipment instruction fetch and execute instruction) use, or combine these instruction execution systems, device or set
It is standby and use.For the purpose of this specification, " computer-readable medium " can any can be included, store, communicate, propagate or pass
Defeated program is for instruction execution system, device or equipment or the dress for combining these instruction execution systems, device or equipment and using
Put.The more specifically example (non-exhaustive list) of computer-readable medium includes following：Electricity with one or more wirings
Connecting portion (electronic installation), portable computer diskette box (magnetic device), random access memory (RAM), read-only storage
(ROM), erasable edit read-only storage (EPROM or flash memory), fiber device, and portable optic disk is read-only deposits
Reservoir (CDROM).In addition, can even is that can be in the paper of printing described program thereon or other are suitable for computer-readable medium
Medium, because can then enter edlin, interpretation or if necessary with it for example by carrying out optical scanner to paper or other media
His suitable method is handled electronically to obtain described program, is then stored in computer storage.
It should be appreciated that each several part of the present invention can be realized with hardware, software, firmware or combinations thereof.Above-mentioned
In embodiment, the software that multiple steps or method can in memory and by suitable instruction execution system be performed with storage
Or firmware is realized.Such as, if realized with hardware with another embodiment, following skill well known in the art can be used
Any one of art or their combination are realized：With the logic gates for realizing logic function to data-signal from
Scattered logic circuit, the application specific integrated circuit with suitable combinational logic gate circuit, programmable gate array (PGA), scene can be compiled
Journey gate array (FPGA) etc..
Those skilled in the art are appreciated that to realize all or part of step that above-described embodiment method is carried
Rapid to can be by program to instruct the hardware of correlation to complete, described program can be stored in a kind of computer-readable storage medium
In matter, the program upon execution, including one or a combination set of the step of embodiment of the method.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing module, can also
That unit is individually physically present, can also two or more units be integrated in a module.Above-mentioned integrated mould
Block can both be realized in the form of hardware, it would however also be possible to employ the form of software function module is realized.The integrated module is such as
Fruit is realized using in the form of software function module and as independent production marketing or in use, can also be stored in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only storage, disk or CD etc..Although having been shown and retouching above
Embodiments of the invention are stated, it is to be understood that above-described embodiment is exemplary, it is impossible to be interpreted as the limit to the present invention
System, one of ordinary skill in the art can be changed to above-described embodiment, change, replace and become within the scope of the invention
Type.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " 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, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
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, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements.For the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, 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.
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, changed, replacing and modification.
Claims (10)
1. a kind of fault detection method of water tank temperature sensor in heat pump water-heating machine, it is characterised in that the heat pump water-heating machine
Including boiler, the first temperature sensor and second temperature sensor and electric heater unit are set in the boiler, it is described
Electric heater unit is used to carry out the boiler auxiliary heating, and first temperature sensor is used to detect in the boiler
The water temperature on electric heater unit top, the second temperature sensor is used for the water for detecting electric heater unit bottom in the boiler
Temperature, the fault detection method comprises the following steps：
Obtain between the water temperature detected value of first temperature sensor and the water temperature detected value of the second temperature sensor
Temperature gap, and the absolute value of the temperature gap is judged；
When the absolute value of the temperature gap is more than preset temperature threshold value and continues preset time, judge that first temperature is passed
Whether the water temperature detected value of sensor is more than the water temperature detected value of the second temperature sensor；
If the water temperature detected value of first temperature sensor is more than the water temperature detected value of the second temperature sensor, sentence
First temperature sensor that breaks breaks down, and according to the water temperature detected value of the second temperature sensor to the Heat Pump
Water dispenser is controlled；
If the water temperature detected value of first temperature sensor is less than the water temperature detected value of the second temperature sensor, sentence
The second temperature sensor of breaking breaks down, and according to the water temperature detected value of first temperature sensor to the Heat Pump
Water dispenser is controlled.
2. the fault detection method of water tank temperature sensor in heat pump water-heating machine according to claim 1, it is characterised in that
When the absolute value of the temperature gap is less than or equal to the preset temperature threshold value, first temperature sensor is judged and described
Second temperature sensor does not break down, and controls the heat pump water-heating machine to keep normal operating condition.
3. the fault detection method of water tank temperature sensor in heat pump water-heating machine according to claim 2, it is characterised in that
When the heat pump water-heating machine keeps normal operating condition, according to the water temperature detected value of first temperature sensor to the electricity
Heater is controlled, and the refrigerant of the heat pump water-heating machine is followed according to the water temperature detected value of the second temperature sensor
Loop system is controlled.
4. the fault detection method of water tank temperature sensor in the heat pump water-heating machine according to any one of claim 1-3,
Characterized in that, the preset temperature threshold value is 8-12 DEG C, the preset time is 2-5 minutes.
5. a kind of computer-readable recording medium, it is characterised in that with instruction therein is stored in, when the instruction is performed
When, the heat pump water-heating machine performs the fault detection method as any one of claim 1-4.
6. a kind of failure detector of water tank temperature sensor in heat pump water-heating machine, it is characterised in that the heat pump water-heating machine
Including boiler, the first temperature sensor and second temperature sensor and electric heater unit are set in the boiler, it is described
Electric heater unit is used to carry out the boiler auxiliary heating, and first temperature sensor is used to detect in the boiler
The water temperature on electric heater unit top, the second temperature sensor is used for the water for detecting electric heater unit bottom in the boiler
Temperature, the failure detector includes：
Acquisition module, for obtaining the water temperature detected value of first temperature sensor and the water temperature of the second temperature sensor
Temperature gap between detected value；
Judge module, judges, and be more than in the absolute value of the temperature gap for the absolute value to the temperature gap
Also judge the water temperature detected value of first temperature sensor whether more than described when preset temperature threshold value and lasting preset time
The water temperature detected value of second temperature sensor；
Control module, the water temperature for being more than the second temperature sensor in the water temperature detected value of first temperature sensor
Judge that first temperature sensor breaks down during detected value, and according to the water temperature detected value pair of the second temperature sensor
The heat pump water-heating machine is controlled, and is passed in the water temperature detected value of first temperature sensor less than the second temperature
Judge that the second temperature sensor breaks down during the water temperature detected value of sensor, and according to the water of first temperature sensor
Temperature detector measured value is controlled to the heat pump water-heating machine.
7. the failure detector of water tank temperature sensor in heat pump water-heating machine according to claim 6, it is characterised in that
When the absolute value of the temperature gap is less than or equal to the preset temperature threshold value, the control module is additionally operable to judge described the
One temperature sensor and the second temperature sensor do not break down, and control the heat pump water-heating machine to keep normal operation
State.
8. the failure detector of water tank temperature sensor in heat pump water-heating machine according to claim 7, it is characterised in that
When the heat pump water-heating machine keeps normal operating condition, the control module is additionally operable to according to first temperature sensor
Water temperature detected value is controlled to the electric heater unit, and according to the water temperature detected value of the second temperature sensor to described
The coolant circulating system of heat pump water-heating machine is controlled.
9. the failure detector of water tank temperature sensor in the heat pump water-heating machine according to any one of claim 6-8,
Characterized in that, the preset temperature threshold value is 8-12 DEG C, the preset time is 2-5 minutes.
10. a kind of heat pump water-heating machine, it is characterised in that including the heat pump water-heating machine according to any one of claim 6-9
The failure detector of middle water tank temperature sensor.
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| CN201710458368.6A CN107192135B (en) | 2017-06-16 | 2017-06-16 | Heat pump water heater and fault detection method and device of water tank temperature sensor thereof |
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|---|---|---|---|
| CN201710458368.6A CN107192135B (en) | 2017-06-16 | 2017-06-16 | Heat pump water heater and fault detection method and device of water tank temperature sensor thereof |
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| CN107192135B CN107192135B (en) | 2020-02-28 |
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| CN107356353A (en) * | 2017-05-24 | 2017-11-17 | 任宇同 | Heat detector performance automatic test equipment and its test method in a kind of fire resisting damper |
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| CN110388755A (en) * | 2019-07-29 | 2019-10-29 | 珠海格力电器股份有限公司 | Wall-hung boiler method for controlling combustion, device, control equipment, medium and wall-hung boiler |
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| CN114252281A (en) * | 2021-08-24 | 2022-03-29 | 佛山市顺德区美的饮水机制造有限公司 | Detection device, control method and control device thereof, and readable storage medium |
| CN114484734A (en) * | 2022-02-21 | 2022-05-13 | 北京小米移动软件有限公司 | Fault detection method and device for air conditioning system, air conditioner and medium |
| CN114963528A (en) * | 2021-06-29 | 2022-08-30 | 青岛海尔新能源电器有限公司 | Refrigerant detection method, device, equipment and storage medium |
| CN114484734B (en) * | 2022-02-21 | 2024-06-04 | 北京小米移动软件有限公司 | Fault detection method and device for air conditioning system, air conditioner and medium |
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| CN114484734A (en) * | 2022-02-21 | 2022-05-13 | 北京小米移动软件有限公司 | Fault detection method and device for air conditioning system, air conditioner and medium |
| CN114484734B (en) * | 2022-02-21 | 2024-06-04 | 北京小米移动软件有限公司 | Fault detection method and device for air conditioning system, air conditioner and medium |
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