CN105674561A - Heat pump water heater and control method thereof - Google Patents
Heat pump water heater and control method thereof Download PDFInfo
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- CN105674561A CN105674561A CN201610147171.6A CN201610147171A CN105674561A CN 105674561 A CN105674561 A CN 105674561A CN 201610147171 A CN201610147171 A CN 201610147171A CN 105674561 A CN105674561 A CN 105674561A
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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
- F24H4/04—Storage heaters
-
- 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
- F24H9/0005—Details for water heaters
-
- 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
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2021—Storage heaters
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a heat pump water heater. The heat pump water heater comprises a controller, a heat pump host machine and a water tank; a water tank temperature sensor is arranged in the water tank; the controller is electrically connected with the heat pump host machine and the water tank temperature sensor; and the controller further includes a detecting module, a temperature acquiring module, a temperature change calculating module, a judging module and an actuation module for detecting a temperature signal of the water tank temperature sensor, monitoring the temperature T of water in the water tank in real time, recording the temperature data in real time, calculating the water temperature change rate K=dT/dt in the water tank in the time t, judging if the water temperature change rate K is in a normal range and performing a corresponding operation for the heat pump host machine according to the judging result. The heat pump water heater can effectively monitor the temperature change in the water tank; and when the heat pump water heater is broken down to cause weak heating, the heat pump host machine can be timely closed to prevent the damage of the heat pump water heater caused by always operation in the fault state.
Description
Technical field
The present invention relates to technical field of water heaters, relate in particular to Teat pump boiler and control method thereof.
Background technology
Teat pump boiler is a kind of efficient heat energy conversion equipment based on contrary Carnot's principle, and it utilizes a small amount of electric energy to transfer heat energy to needs in heated water, to realize the object of heating water. At present the source pump of Teat pump boiler is the start-stop that the temperature value that is arranged at the sensor in water tank by detection is controlled unit; when water temperature Auto Power On during lower than certain preset value; autostop when water temperature rises to user's setting value; when after main frame start; actual heating effect but cannot be monitored; if water temperature does not change always; because water tank temperature value does not reach the condition of compressor emergency shutdown; unit can not autostop and operation always; can have a strong impact on the service life of compressor, even burn compressor. Particularly when source pump is under some abnormal factors when heating operation, cause heating effect variation as coolant leakage, water temperature rises and slowly or does not completely rise, and owing to not reaching the condition of source pump shutdown, source pump can continue operation, thereby affects the service life of Teat pump boiler; In addition; water tank temperature sensor needs installation personnel scene to be after sale installed in water tank; if install lack of standardization; easily cause the temperature sensor in water tank to get loose; problem not in place is installed; cause tank sensor can accurately not detect the actual temperature in water tank, unit can not independently be shut down and operation always. For overcoming the problems referred to above, Teat pump boiler and control method thereof are developed.
Summary of the invention
Technical problem to be solved by this invention is that a kind of Teat pump boiler and control method thereof will be provided, it can monitor variations in temperature in heat-pump water-heater water tank effectively, break down and heat when bad at Teat pump boiler, can close in time heat pump main frame, avoid Teat pump boiler one nonserviceable lower operation and damage.
The technical scheme that institute of the present invention technical solution problem adopts is: a kind of Teat pump boiler, comprise controller, heat pump main frame, water tank, in water tank, be provided with water tank temperature sensor, controller is connected with heat pump main frame, water tank temperature sensor electrical respectively, and controller also comprises:
Detection module, described detection module is for detection of the temperature signal of water tank temperature sensor;
Temperature collect module, described temperature collect module is for the water temperature T in Real-Time Monitoring water tank, and real time record temperature data;
Variations in temperature computing module, described variations in temperature computing module is for the water temperature rate of change K of t inner water tank computing time, described water temperature rate of change K=|dT/dt|;
Judge module, described judge module is used for judging that described water temperature rate of change K is whether in normal scope;
Executive Module, described Executive Module, for according to the judged result of judge module, heat pump main frame being carried out to corresponding operation, continues to carry out current state if water temperature rate of change K in normal scope, controls heat pump main frame; If water temperature rate of change K, not in normal scope, controls heat pump main frame and carries out shutdown operation.
Further, described controller also comprises statistical module, describedly comprise that statistical module is for adding up the ratio of number n of the water temperature rate of change K that described variations in temperature computing module calculates in time t, and statistics judge module judges the number m of the water temperature rate of change K in normal range (NR).
Further, described variations in temperature computing module also judges the number m of the water temperature rate of change K in normal range (NR) and the number n of the water temperature rate of change K that described variations in temperature computing module calculates in time t for calculating described judge module, calculates natural rate of interest R=m/n.
Further, described judge module is also for judging that described natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes.
A control method for Teat pump boiler, is characterized in that, comprises the following steps:
A, heat pump host-initiated, detect the temperature signal of water tank temperature sensor in real time, and the temperature data water temperature T that detects of real time record detection module;
Water temperature rate of change K=|dT/dt| in b, computing time t inner water tank;
C, judge that described water temperature rate of change K whether in normal scope, continues to carry out current state if water temperature rate of change K in normal scope, controls heat pump main frame; If water temperature rate of change K, not in normal scope, controls heat pump main frame and carries out shutdown operation.
Further, described step c is further comprising the steps of:
The number n of c1, the statistics water temperature rate of change K that described variations in temperature computing module calculates in time t, and statistics judge module judges the number m of the water temperature rate of change K in normal range (NR);
The number m of c2, the water temperature rate of change K of calculating in normal range (NR) and the water temperature rate of change K that described variations in temperature computing module calculates in time t obtain the ratio of number n, calculate natural rate of interest R=m/n;
C3, judge natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes, if R >=R establishes, controls heat pump main frame and continues to carry out current state; If R < R establishes, control heat pump main frame and carry out shutdown operation.
Further, the scope of described water temperature rate of change K [1 ,+∞) be judged as normal value.
Further, the scope that described natural rate of interest R establishes is in [0.8,1].
The present invention compares produced beneficial effect with background technology: due to Teat pump boiler of the present invention and control method thereof, a kind of Teat pump boiler, comprise controller, heat pump main frame, water tank, in water tank, be provided with water tank temperature sensor, controller is connected with heat pump main frame, water tank temperature sensor electrical respectively, controller also comprises: detection module, for detection of the temperature signal of water tank temperature sensor; Temperature collect module, for the water temperature T in Real-Time Monitoring water tank, and real time record temperature data; Variations in temperature computing module, for the water temperature rate of change K of t inner water tank computing time, described water temperature rate of change K=|dT/dt|; Judge module, for judging that described water temperature rate of change K is whether in normal scope; Executive Module, for according to the judged result of judge module, heat pump main frame being carried out to corresponding operation, continues to carry out current state if water temperature rate of change K in normal scope, controls heat pump main frame; If water temperature rate of change K, not in normal scope, controls heat pump main frame and carries out shutdown operation. It can monitor variations in temperature in heat-pump water-heater water tank effectively, breaks down and heats when bad at Teat pump boiler, can close in time heat pump main frame, avoids Teat pump boiler one nonserviceable lower operation and damage.
Brief description of the drawings
Fig. 1 is the annexation schematic diagram of Teat pump boiler of the present invention.
Fig. 2 is the control module schematic diagram of the controller of Teat pump boiler of the present invention.
Fig. 3 is the flow chart of Teat pump boiler control method of the present invention.
Fig. 4 is the flow chart of Teat pump boiler control method one specific embodiment of the present invention.
Detailed description of the invention
Referring to Fig. 1, a kind of Teat pump boiler, comprises controller 1, heat pump main frame 2, water tank 3, is provided with water tank temperature sensor 4 in water tank, and controller is electrically connected with heat pump main frame 2, water tank temperature sensor 4 respectively. Referring to Fig. 2, controller also comprises: detection module 11, and temperature collect module 12, variations in temperature computing module 13, judge module 15, Executive Module 16, wherein, detection module 11 is for detection of the temperature signal of water tank temperature sensor 4; Temperature collect module 12 is for the water temperature T in Real-Time Monitoring water tank, and real time record temperature data; Variations in temperature computing module 13 is for the water temperature rate of change K of t inner water tank computing time, water temperature rate of change K=|dT/dt|; Judge module 15 is for judging that water temperature rate of change K is whether in normal scope; Executive Module 16, for according to the judged result of judge module 15, heat pump main frame being carried out to corresponding operation, continues to carry out current state if water temperature rate of change K in normal scope, controls heat pump main frame; If water temperature rate of change K, not in normal scope, controls heat pump main frame and carries out shutdown operation. Can effectively monitor the variations in temperature in heat-pump water-heater water tank 3, break down and heat when bad at Teat pump boiler, can close in time heat pump main frame 2, avoid Teat pump boiler one nonserviceable lower operation and damage.
Further, controller also comprises statistical module 14, statistical module 14 is for adding up the ratio of number n of the water temperature rate of change K that variations in temperature computing module 13 calculates in time t, and statistics judge module 15 judges the number m of the water temperature rate of change K in normal range (NR). Variations in temperature computing module 13 also judges that for calculating described judge module 15 the number m of the water temperature rate of change K in normal range (NR) and the water temperature rate of change K that described variations in temperature computing module 13 calculates in time t obtain number n, calculate natural rate of interest R=m/n. Judge module 15 is also for judging that described natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes. Can judge more accurately whether Teat pump boiler breaks down, thereby avoid causing erroneous judgement to affect the normal use of Teat pump boiler.
Referring to Fig. 3, a kind of control method of Teat pump boiler, comprises the following steps:
A, heat pump main frame 2 start, and detect in real time the temperature signal of water tank temperature sensor 4, and the temperature data water temperature T that detects of real time record detection module 11;
Water temperature rate of change K=|dT/dt| in b, computing time t inner water tank;
C, judge that described water temperature rate of change K whether in normal scope, if water temperature rate of change K is in normal scope, controls heat pump main frame, 2 continue to carry out current states; If water temperature rate of change K, in normal scope, does not control heat pump main frame 2 and carries out shutdown operation. The scope of above-mentioned water temperature rate of change K [1 ,+∞) be judged as normal value.
Particularly, referring to Fig. 4, step c is further comprising the steps of:
The number n of c1, the statistics water temperature rate of change K that described variations in temperature computing module 13 calculates in time t, and statistics judge module 15 judges the number m of the water temperature rate of change K in normal range (NR);
The number m of c2, the water temperature rate of change K of calculating in normal range (NR) and the water temperature rate of change K that described variations in temperature computing module 13 calculates in time t obtain the ratio of number n, calculate natural rate of interest R=m/n;
C3, judge natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes, if R >=R establishes, controls heat pump main frame 2 and continues to carry out current states; If R < R establishes, control heat pump main frame 2 and carry out shutdown operation. The scope that above-mentioned natural rate of interest R establishes is in [0.8,1].
Working method one: after Teat pump boiler starts, detect in real time the temperature signal of water tank temperature sensor 4, and the temperature data water temperature T that detects of real time record detection module 11, then water temperature T is carried out differential calculation to the time, be the water temperature rate of change K=|dT/dt| in t inner water tank computing time, calculating water temperature rate of change K1=| (T1-T0)/(t1-t0) |, K2=| (T2-T1)/(t2-t1) | Kn=| (Tn-Tn-1)/(tn-tn-1) |, if water temperature rate of change K is not in normal scope, be that water temperature rate of change K has exceeded the value range K setting and establishes 1 ~ K and establish 2, wherein K establishes 1 < K and establishes 2, preferably, the scope of water temperature rate of change K is [1, + ∞) be judged as normal value. judge that Teat pump boiler breaks down, control at once heat pump main frame 2 and shut down, avoid the infringement that causes water heater larger.
Working method two: after Teat pump boiler starts, detect in real time the temperature signal of water tank temperature sensor 4, and the temperature data water temperature T that detects of real time record detection module 11, then water tank temperature carries out differential calculation to the time, be the water temperature rate of change K=|dT/dt| in t inner water tank computing time, calculating water temperature rate of change K1=| (T1-T0)/(t1-t0) |, K2=| (T2-T1)/(t2-t1) | Kn=| (Tn-Tn-1)/(tn-tn-1) |, obtain the rate of change A={K1 of one group of temperature to the time, K2Kn}, then add up the number n of the water temperature rate of change K that described variations in temperature computing module 13 calculates in time t, and statistics judge module 15 judges the number m of the water temperature rate of change K in normal range (NR), the number m of the water temperature rate of change K of calculating in normal range (NR) and the water temperature rate of change K that described variations in temperature computing module 13 calculates in time t obtain the ratio of number n, calculate natural rate of interest R=m/n, judge natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes, if R >=R establishes, controls heat pump main frame 2 and continues to carry out current states, if R < R establishes, control heat pump main frame 2 and carry out shutdown operation. preferably, the scope that natural rate of interest R establishes can judge in [0.8,1] whether Teat pump boiler breaks down more accurately, thereby avoids causing erroneous judgement to affect the normal use of Teat pump boiler, protects better the heating unit of Teat pump boiler, extends its service life.
Claims (8)
1. a Teat pump boiler, comprise controller (1), heat pump main frame (2), water tank (3), in water tank (3), be provided with water tank temperature sensor (4), controller (1) is electrically connected with heat pump main frame (2), water tank temperature sensor (4) respectively, it is characterized in that described controller (1) also comprises:
Detection module (11), described detection module (11) is for detection of the temperature signal of water tank temperature sensor (4);
Temperature collect module (12), described temperature collect module (12) is for the water temperature T in Real-Time Monitoring water tank (3), and real time record temperature data;
Variations in temperature computing module (13), described variations in temperature computing module (13) is for the water temperature rate of change K of t inner water tank computing time, described water temperature rate of change K=|dT/dt|;
Judge module (15), described judge module (15) is for judging that described water temperature rate of change K is whether in normal scope;
Executive Module (16), described Executive Module (16) is for carrying out operation accordingly according to the judged result of judge module (15) to heat pump main frame (2), if in normal scope, controlling heat pump main frame (2), water temperature rate of change K continues to carry out current state; If water temperature rate of change K, not in normal scope, controls heat pump main frame (2) and carries out shutdown operation.
2. Teat pump boiler according to claim 1, it is characterized in that described controller (1) also comprises statistical module (14), describedly comprise the ratio of number n of statistical module (14) for the statistics water temperature rate of change K that described variations in temperature computing module (13) calculates in time t, and statistics judge module (15) judges the number m of the water temperature rate of change K in normal range (NR).
3. Teat pump boiler according to claim 2, it is characterized in that described variations in temperature computing module (13) also judges the number m of the water temperature rate of change K in normal range (NR) and the number n of the water temperature rate of change K that described variations in temperature computing module (13) calculates in time t for calculating described judge module (15), calculates natural rate of interest R=m/n.
4. Teat pump boiler according to claim 3, is characterized in that described judge module (15) is also for judging that described natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes.
5. a control method for Teat pump boiler, is characterized in that, comprises the following steps:
A, heat pump main frame (2) start, and detect in real time the temperature signal of water tank temperature sensor (4), and the temperature data water temperature T that detects of real time record detection module (11);
Water temperature rate of change K=|dT/dt| in b, computing time t inner water tank;
C, judge that described water temperature rate of change K whether in normal scope, continues to carry out current state if water temperature rate of change K in normal scope, controls heat pump main frame (2); If water temperature rate of change K, not in normal scope, controls heat pump main frame (2) and carries out shutdown operation.
6. the control method of Teat pump boiler according to claim 5, is characterized in that, described step c is further comprising the steps of:
The number n of c1, the statistics water temperature rate of change K that described variations in temperature computing module (13) calculates in time t, and statistics judge module (15) judges the number m of the water temperature rate of change K in normal range (NR);
The number m of c2, the water temperature rate of change K of calculating in normal range (NR) and the water temperature rate of change K that described variations in temperature computing module (13) calculates in time t obtain the ratio of number n, calculate natural rate of interest R=m/n;
C3, judge natural rate of interest R whether in normal scope, judges whether natural rate of interest R is more than or equal to default natural rate of interest R and establishes, if R >=R establishes, controls heat pump main frame (2) and continues to carry out current state; If R < R establishes, control heat pump main frame (2) and carry out shutdown operation.
7. the control method of Teat pump boiler according to claim 6, the scope that it is characterized in that described water temperature rate of change K [1 ,+∞) be judged as normal value.
8. the control method of Teat pump boiler according to claim 6, the scope that the natural rate of interest R described in it is characterized in that establishes is in [0.8,1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610147171.6A CN105674561A (en) | 2016-03-16 | 2016-03-16 | Heat pump water heater and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610147171.6A CN105674561A (en) | 2016-03-16 | 2016-03-16 | Heat pump water heater and control method thereof |
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| CN105674561A true CN105674561A (en) | 2016-06-15 |
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| CN201610147171.6A Pending CN105674561A (en) | 2016-03-16 | 2016-03-16 | Heat pump water heater and control method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107388591A (en) * | 2017-08-14 | 2017-11-24 | 广东万和热能科技有限公司 | Control method, control device and the computer-readable recording medium of heating stove |
| CN107401840A (en) * | 2017-07-26 | 2017-11-28 | 珠海格力电器股份有限公司 | Hot water machine and its detection means and method for verifying water tank temperature-sensitive package location |
| CN108852057A (en) * | 2018-06-29 | 2018-11-23 | 九阳股份有限公司 | A kind of material detection method of food processor |
| CN111811148A (en) * | 2020-07-30 | 2020-10-23 | 合肥美的暖通设备有限公司 | Fault detection method and device, heat pump heating equipment and computer readable storage medium |
| CN113567008A (en) * | 2021-07-22 | 2021-10-29 | 上海德朗能电子科技有限公司 | Water tank state detection device and method and washing and mopping integrated machine |
| CN114767985A (en) * | 2022-03-16 | 2022-07-22 | 深圳圣诺医疗设备股份有限公司 | Dry heat type liquid conveying temperature control method and system |
| WO2023273471A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔新能源电器有限公司 | Refrigerant detection method, apparatus, device, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107401840A (en) * | 2017-07-26 | 2017-11-28 | 珠海格力电器股份有限公司 | Hot water machine and its detection means and method for verifying water tank temperature-sensitive package location |
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| CN111811148A (en) * | 2020-07-30 | 2020-10-23 | 合肥美的暖通设备有限公司 | Fault detection method and device, heat pump heating equipment and computer readable storage medium |
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| WO2023273471A1 (en) * | 2021-06-29 | 2023-01-05 | 青岛海尔新能源电器有限公司 | Refrigerant detection method, apparatus, device, and storage medium |
| CN113567008A (en) * | 2021-07-22 | 2021-10-29 | 上海德朗能电子科技有限公司 | Water tank state detection device and method and washing and mopping integrated machine |
| CN113567008B (en) * | 2021-07-22 | 2024-03-01 | 上海派智能源股份有限公司 | Water tank state detection device and method and washing and mopping integrated machine thereof |
| CN114767985A (en) * | 2022-03-16 | 2022-07-22 | 深圳圣诺医疗设备股份有限公司 | Dry heat type liquid conveying temperature control method and system |
| CN114767985B (en) * | 2022-03-16 | 2023-08-08 | 深圳圣诺医疗设备股份有限公司 | Dry heating type infusion temperature control method and system |
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