CN111735242A - Intelligent control scheme of heat pump system - Google Patents
Intelligent control scheme of heat pump system Download PDFInfo
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- CN111735242A CN111735242A CN202010594530.9A CN202010594530A CN111735242A CN 111735242 A CN111735242 A CN 111735242A CN 202010594530 A CN202010594530 A CN 202010594530A CN 111735242 A CN111735242 A CN 111735242A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/077—Compressor control units, e.g. terminal boxes, mounted on the compressor casing wall containing for example starter, protection switches or connector contacts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The embodiment of the invention provides an intelligent control scheme of a heat pump system, which comprises a boiler and boiler water pump control scheme, wherein the boiler and boiler water pump control scheme comprises the following steps: acquiring the ambient temperature of a heat pump system, the stop operation time of a boiler, the on-off state of a temperature controller of the boiler and the jumper selection condition of a main control board, and determining whether to start the boiler and a boiler water pump according to the parameters; and acquiring the ambient temperature of the heat pump system, the on-off state of a temperature controller of the boiler and the operation time of the boiler, and determining whether to stop operating the boiler and the boiler water pump according to the parameters. Along with the working conditions such as the ambient temperature and the temperature controller on-off state that the heat pump system is located are changing, the boiler system controls the opening and closing of the boiler and the boiler water pump according to the real-time heat supply demand of the heat pump system, and the on-off state of the boiler and the boiler water pump and the real-time heat supply demand of the heat pump system are matched, so that the energy consumption can be reduced to the minimum degree.
Description
Technical Field
The invention relates to the technical field of heat pump system control methods, in particular to an intelligent control scheme of a heat pump system.
Background
Under the current situation that the energy supply is becoming tight and the requirement for environmental protection is increasing, people are continuously seeking new energy which is energy-saving and environment-friendly, and a heat pump is one of the new energy. The heat pump can realize the transmission of low-temperature heat energy to high-temperature heat energy, can greatly utilize the heat in natural resources and waste heat resources, and effectively saves primary energy required by civil and industrial use, wherein the heat pump control system is a system capable of controlling the operation process of the heat pump and equipment thereof.
In the operation process of the existing heat pump system, the operation conditions of components of the heat pump system, such as a boiler water pump, an auxiliary heat source and the like, basically operate according to the parameters set by the system, so that the heat pump system can stably refrigerate or heat. However, in the practical application process, the working condition and environment of the heat pump system may be constantly changed, and if the heat pump system is operated according to the preset parameters, the heat pump system may not always reach the optimal working operation state.
Disclosure of Invention
The invention provides an intelligent control scheme of a heat pump system, which aims to solve the problem that the optimal working operation state cannot be always achieved because components of the existing heat pump system operate according to preset parameters.
The intelligent control scheme of the heat pump system comprises a boiler and boiler water pump control scheme, and is characterized in that the boiler and boiler water pump control scheme comprises the following steps:
acquiring the ambient temperature of a heat pump system, the stop operation time of a boiler, the temperature controller on-off state of the boiler and the jumper selection condition of a main control board, and determining whether to start the boiler and a boiler water pump according to the acquired ambient temperature, the stop operation time of the boiler, the temperature controller on-off state of the boiler and the jumper selection condition of the main control board;
the method comprises the steps of obtaining the ambient temperature of a heat pump system, the on-off state of a temperature controller of a boiler and the running time of the boiler, and determining whether to stop running the boiler and a boiler water pump according to the obtained ambient temperature, the on-off state of the temperature controller of the boiler and the running time of the boiler.
Further, the determining whether to start the boiler and the boiler water pump according to the acquired environment temperature, the stop operation time of the boiler, the temperature controller on-off state of the boiler and the main control board jumper selection condition comprises:
and when the following conditions are met, the boiler and the boiler water pump are started:
c110: the ambient temperature is less than 5 ℃;
c120: the stop operation time of the boiler is more than 10 min;
c130: the temperature controller of the boiler is in a switch-on state;
c140: and the jumper selection condition of the main control board is to select the boiler function.
Further, the determining whether to stop operating the boiler and the boiler water pump according to the acquired ambient temperature, the acquired thermostat switch state of the boiler, and the operating time of the boiler includes:
when any of the following conditions is met, the boiler and the boiler water pump stop operating:
c210: the ambient temperature is greater than 7 ℃ and the running time of the boiler is greater than 10 min;
c220: the switch state of the temperature controller of the boiler is in an off state.
Further, an auxiliary heat source control scheme is included, the auxiliary heat source control scheme including the steps of:
acquiring the ambient temperature of a heat pump system, the continuous operation time of a compressor and the water inlet temperature of a heat exchanger, and determining whether to start an auxiliary heat source according to the acquired ambient temperature, the continuous operation time of the compressor and the water inlet temperature of the heat exchanger;
the method comprises the steps of obtaining the ambient temperature of a heat pump system and the water inlet temperature of a heat exchanger, and determining whether to close an auxiliary heat source according to the obtained ambient temperature and the water inlet temperature of the heat exchanger.
Further, the determining whether to turn on an auxiliary heat source according to the acquired environment temperature, the continuous operation time of the compressor and the water inlet temperature of the heat exchanger comprises:
and when the following conditions are met, the auxiliary heat source is started:
c310: the ambient temperature is less than 5 ℃;
c320: the continuous operation time of the compressor is more than 30 min;
c330: the heating set temperature is higher than the water inlet temperature of the heat exchanger by more than 3 ℃.
Further, the determining whether to turn off the auxiliary heat source according to the acquired ambient temperature and the acquired water inlet temperature of the heat exchanger comprises:
when any of the following conditions is met, the auxiliary heat source is turned off:
c410: the ambient temperature is greater than 7 ℃;
c420: the heating set temperature is equal to the water inlet temperature of the heat exchanger.
Further, the method also comprises a fixed-frequency compressor control scheme, wherein the fixed-frequency compressor control scheme comprises the following steps:
s110: acquiring the running state of the variable frequency compressor, if the variable frequency compressor is in a fault state, starting the fixed frequency compressor to produce hot water, and if the variable frequency compressor is not in the fault state, entering step S120;
s120: and acquiring the continuous opening time and the hot water temperature of the variable frequency compressor, and if the hot water still cannot reach 2 times of the range of the set temperature and the control return difference temperature after the variable frequency compressor is continuously opened for 30 minutes, opening the fixed frequency compressor to produce hot water.
Further, still include circulating water pump control scheme, circulating water pump control scheme includes the following step:
s210: acquiring the on-off state of the wire controller, if the wire controller is in the off state, turning off the circulating water pump, and if the wire controller is in the on state, entering the step S220;
s220: acquiring a fault alarm signal of a water flow switch, if the water flow switch sends the fault alarm signal, not starting or closing the circulating water pump, if the water flow switch does not send the fault alarm signal, starting the circulating water pump, and entering step S230;
s230: and acquiring the ambient temperature of the heat pump system, judging whether the ambient temperature reaches the preset overtemperature shutdown temperature of the compressor, if so, closing the circulating water pump, and restarting the circulating water pump after 5 min.
Further, still include air conditioner valve and hot water valve control scheme, air conditioner valve and hot water valve control scheme includes the following step:
s310: acquiring the on-off state of the circulating water pump, if the circulating water pump is in the off state, closing an air conditioner valve and a hot water valve, and if the circulating water pump is in the on state, entering step S320;
s320: and acquiring an operation mode of the heat pump system, if the operation mode is refrigeration or heating, opening the air conditioning valve, and if the operation mode is heating water, opening the hot water valve.
The intelligent control scheme of the heat pump system comprises a boiler and boiler water pump control scheme, wherein the boiler and boiler water pump control scheme comprises two control logics which are respectively used for judging whether to start a boiler and a boiler water pump in a closed state or not and whether to stop operating the boiler and the boiler water pump in an operating state or not. The method specifically comprises the following steps: judging whether to start the boiler and a boiler water pump in a closed state according to the ambient temperature of the heat pump system, the stop operation time of the boiler, the on-off state of a temperature controller of the boiler and the jumper selection condition of a main control board; and judging whether to stop operating the boiler and the boiler water pump or not according to the ambient temperature of the heat pump system, the on-off state of the temperature controller of the boiler and the operation time of the boiler.
Therefore, the boiler system controls the opening and closing of the boiler and the boiler water pump according to the real-time heat supply requirement of the heat pump system along with the change of the ambient temperature, the on-off state of the temperature controller, the jumper selection condition of the main control board and other working conditions of the heat pump system, and the energy consumption of the boiler and the boiler water pump can be reduced to the minimum degree while the on-off state of the boiler and the boiler water pump is matched with the real-time heat supply requirement of the heat pump system.
Drawings
FIG. 1 is a first schematic view of a boiler and boiler water pump control scheme of the present invention;
FIG. 2 is a second schematic view of the boiler and boiler water pump control scheme of the present invention;
FIG. 3 is a first schematic diagram of an auxiliary heat source control scheme of the present invention;
FIG. 4 is a second schematic illustration of an auxiliary heat source control scheme of the present invention;
FIG. 5 is a schematic diagram of a fixed frequency compressor control scheme of the present invention;
FIG. 6 is a schematic diagram of a circulating water pump control scheme of the present invention;
FIG. 7 is a schematic diagram of the air conditioning valve and hot water valve control scheme of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The intelligent control scheme of the heat pump system provided by the invention comprises a boiler and boiler water pump control scheme, and the boiler and boiler water pump control scheme comprises the following steps:
acquiring the ambient temperature of a heat pump system, the stop operation time of a boiler, the on-off state of a temperature controller of the boiler and the jumper selection condition of a main control board, and determining whether to start the boiler and a boiler water pump according to the acquired parameters;
and acquiring the ambient temperature of the heat pump system, the on-off state of a temperature controller of the boiler and the operation time of the boiler, and determining whether to stop operating the boiler and the boiler water pump according to the acquired parameters.
The boiler system is mainly used for providing a heat source for winter heating and providing a certain amount of hot water, and the comprehensive energy efficiency ratio of the heat pump system can be improved by using the boiler in the heat pump system. During the operation of the heat pump system, as the heating demand changes, the on-off state of the boiler system also needs to change to match the heating demand. For example, when the heating demand of the heat pump system is not high, the boiler system does not need to be started to supply hot water, and if the boiler system is started at the moment, the consumed energy is too large, so that unnecessary waste is caused; when the heating demand of the heat pump system is high, the boiler system needs to be started for supplying hot water, the heat pump system cannot supply sufficient heat if the boiler system is not started, and the user experience is affected because the hot air or the hot water at the preset temperature cannot be supplied.
Therefore, the on-off state of the boiler system cannot operate according to the preset condition, and meanwhile, if the on-off state of the boiler system is manually controlled, unnecessary human resources are wasted.
Referring to FIG. 1, according to an embodiment of the present invention, a boiler water pump control scheme includes two major control logics, which are respectively used for judging: firstly, whether to start the boiler and the boiler water pump in the closed state and secondly whether to stop operating the boiler and the boiler water pump in the operating state. The specific steps of judging whether to start the boiler and the boiler water pump when in the closing state are as follows:
and when the following conditions are met, the boiler and the boiler water pump are started:
c110: the ambient temperature is less than 5 ℃;
c120: the stop running time of the boiler is more than 10 min;
c130: the temperature controller of the boiler is in a switch-on state;
c140: the main control board jumper selecting condition is to select the boiler function.
The data are obtained by tests, and the ambient temperature is lower than 5 ℃, which shows that the temperature difference between the hot water in the heat pump system and the outside air is large; the stop operation time of the boiler is more than 10min, so that the boiler does not continuously operate, and the burning out of the boiler caused by continuous operation is avoided; the switch state of the temperature controller of the boiler is in a connection state, and the jumper selection condition of the main control board is that the boiler function is selected, which indicates that the mode set by the heat pump system at the moment is allowed to start the boiler system. When all the conditions are met, the boiler and the boiler water pump are started to produce hot water or supply hot air, and the heat pump system is guaranteed to supply heat fully.
Referring to fig. 2, according to the embodiment of the present invention, the specific steps of determining whether to stop operating the boiler and the boiler water pump in the operating state are as follows:
when any of the following conditions is met, the boiler and the boiler water pump stop operating:
c210: the environmental temperature is more than 7 ℃ and the running time of the boiler is more than 10 min;
c220: the switch state of the temperature controller of the boiler is in an off state.
The data are obtained by tests, the ambient temperature is higher than 7 ℃, which indicates that the external ambient temperature is higher, and the temperature difference between the hot water in the heat pump system and the external air is not large; the running time of the boiler is more than 10min, which indicates that the boiler is in a continuous running state, and in order to avoid burning out of the boiler caused by continuous work, the boiler and the boiler water pump should stop running. When two above conditions are satisfied simultaneously, the boiler and the boiler water pump are closed, and the service lives of the boiler and the boiler water pump are ensured. The on-off state of the temperature controller of the boiler is in an off state, which indicates that the mode set by the heat pump system is changed into a mode which does not allow the boiler system to be started, and the boiler water pump are required to be closed at the moment.
In another embodiment of the present invention, the heat pump system intelligent control scheme further comprises an auxiliary heat source control scheme, the auxiliary heat source control scheme comprising the steps of:
acquiring the ambient temperature of a heat pump system, the continuous operation time of a compressor and the water inlet temperature of a heat exchanger, and determining whether to start an auxiliary heat source according to the parameters;
and acquiring the ambient temperature of the heat pump system and the water inlet temperature of the heat exchanger, and determining whether to close the auxiliary heat source according to the parameters.
The auxiliary heat source is also called a waterway heater and plays a role in auxiliary heating for heating or heating water of the heat pump system. In the operation process of the heat pump system, along with the increase of the heating demand or in a defrosting mode, an auxiliary heat source (a water path heater) needs to be started to provide auxiliary heat, and at the moment, if the auxiliary heat source (the water path heater) is not started, the heat supply of the heat pump system is insufficient, the heating or water heating effect at a preset temperature cannot be achieved, and the use experience of a user is influenced; when the heating or hot water demand of the heat pump system is not high, the auxiliary heat source (water path heater) does not need to be turned on, and at this time, if the auxiliary heat source (water path heater) is turned on, the consumed energy is too large, and unnecessary waste is caused.
Therefore, the on-off state of the auxiliary heat source (the water path heater) can not be operated according to the preset condition, the auxiliary heat source control scheme of the invention combines the working condition of the heat pump system and the equipment operation condition to control the on-off of the auxiliary heat source (the water path heater), so that the auxiliary heat source control scheme has the self-adaptive adjustment function, ensures that the on-off state of the auxiliary heat source (the water path heater) is matched with the real-time heat supply requirement of the heat pump system, and ensures that the auxiliary heat source (the water path heater) can reach.
Referring to fig. 3, according to an embodiment of the present invention, the auxiliary heat source control scheme includes two major control logics, which are respectively used for judging: firstly, whether the auxiliary heat source (the water path heater) is started in the closed state and secondly whether the auxiliary heat source (the water path heater) is stopped in the running state. The specific steps of judging whether the auxiliary heat source (waterway heater) is started or not in the closing state are as follows:
when the following conditions are met, the auxiliary heat source (water path heater) is started:
c310: the ambient temperature is less than 5 ℃;
c320: the continuous running time of the compressor is more than 30 min;
c330: the heating set temperature is higher than the water inlet temperature of the heat exchanger by more than 3 ℃.
The data are obtained by tests, and the ambient temperature is lower than 5 ℃, which shows that the external ambient temperature is lower, and the temperature difference between hot water in the heat pump system and external air is larger; the continuous operation time of the compressor is more than 30min, and the heating set temperature is higher than the water inlet temperature of the heat exchanger by more than 3 ℃, which indicates that the compressor has been continuously operated for a period of time but still can not reach the heating set temperature, and an auxiliary heat source needs to be started for heat supply. When all the conditions are met, an auxiliary heat source (a water path heater) is started to produce hot water or supply hot air, and the heat pump system is ensured to supply heat fully.
Referring to fig. 4, according to the embodiment of the present invention, the specific steps of determining whether to stop operating the auxiliary heat source (water path heater) in the operating state are as follows:
when the following arbitrary conditions are satisfied, the auxiliary heat source (water path heater) is turned off:
c410: the ambient temperature is more than 7 ℃;
c420: the heating set temperature is equal to the water inlet temperature of the heat exchanger.
The data are obtained by tests, the ambient temperature is higher than 7 ℃, which indicates that the external ambient temperature is higher, and the temperature difference between the hot water in the heat pump system and the external air is not large; the heating set temperature is equal to the temperature of the inlet water of the heat exchanger, which indicates that the temperature of the inlet water of the heat exchanger reaches the heating set temperature set by the user through the auxiliary heating effect of the auxiliary heat source (the water path heater). The auxiliary heat source (water path heater) in the running state can be turned off when any one of the above conditions is met.
Referring to fig. 5, according to an embodiment of the present invention, the heat pump system intelligent control scheme further includes a fixed-frequency compressor control scheme, and the fixed-frequency compressor control scheme includes the following steps:
s110: acquiring the running state of the variable frequency compressor, if the variable frequency compressor is in a fault state, starting the fixed frequency compressor to produce hot water, and if the variable frequency compressor is not in the fault state, entering the step S120;
s120: and acquiring the continuous opening time and the hot water temperature of the variable frequency compressor, and if the hot water still cannot reach 2 times of the range of the set temperature and the control return difference temperature after the variable frequency compressor is continuously opened for 30 minutes, opening the fixed frequency compressor to produce hot water.
When the heat pump system normally operates, the variable frequency compressor is started to operate and is used as hot water, and when the fault of the variable frequency compressor is detected, the alternative fixed frequency compressor is automatically started to be used as hot water. When the inverter compressor is not in a fault state and can be normally started, whether the inverter compressor reaches 2 times of the range of the set temperature and the control return difference temperature after being continuously started for 30 minutes is detected, if the inverter compressor cannot reach the range, the load of the inverter compressor cannot provide enough hot water, and the alternative fixed-frequency compressor is automatically started.
Referring to fig. 6, according to an embodiment of the present invention, the heat pump system intelligent control scheme further includes a circulating water pump control scheme, and the circulating water pump control scheme includes the following steps:
s210: acquiring the on-off state of the wire controller, if the wire controller is in the off state, turning off the circulating water pump, and if the wire controller is in the on state, entering the step S220;
s220: acquiring a fault alarm signal of the water flow switch, if the water flow switch sends the fault alarm signal, not starting or closing the circulating water pump, if the water flow switch does not send the fault alarm signal, starting the circulating water pump, and entering step S230;
s230: and acquiring the ambient temperature of the heat pump system, judging whether the ambient temperature reaches the preset overtemperature shutdown temperature of the compressor, if so, closing the circulating water pump, and restarting the circulating water pump after 5 min.
The wire controller is used for controlling the running state of each part of the heat pump system, when the wire controller is closed, the heat pump system is in a shutdown state, and at the moment, the circulating water pump is also in a closed state. When the line controller is started, whether the water flow switch sends a fault alarm signal or not is detected, if the water flow switch does not send the fault alarm signal, the water flow in the pipeline does not reach a preset threshold value, the circulating water pump can be started at the moment, and otherwise, the circulating water pump is not started. And finally, detecting whether the ambient temperature of the heat pump system reaches the preset overtemperature shutdown temperature of the compressor, if the ambient temperature reaches the preset overtemperature shutdown temperature, closing the circulating water pump for 5min and then restarting the circulating water pump, and repeating the steps until the ambient temperature reaches the preset overtemperature shutdown temperature of the compressor, so that the service life of the compressor is ensured.
Referring to fig. 7, according to an embodiment of the present invention, the heat pump system intelligent control scheme further includes an air conditioner valve and hot water valve control scheme, which includes the steps of:
s310: acquiring the on-off state of the circulating water pump, if the circulating water pump is in the off state, closing the air conditioning valve and the hot water valve, and if the circulating water pump is in the on state, entering the step S320;
s320: and acquiring the operation mode of the heat pump system, if the operation mode is refrigeration or heating, starting an air conditioning valve, and if the operation mode is heating water, starting a hot water valve.
When the circulating water pump is in a closed state, the heat pump system is in a closed state, and the air-conditioning valve and the hot water valve are also in a closed state at the same time. If the circulating water pump is in an open state, detecting a specific operation mode of the circulating water pump, and if the circulating water pump is in a refrigeration or heating mode, opening an air conditioning valve, and opening a refrigeration or heating refrigerant flow path of the heat pump system; if the mode is the heating water mode, the hot water valve is opened, and at the moment, the heating water refrigerant flow path of the heat pump system is opened.
In summary, the heat pump system intelligent control scheme provided by the invention comprises a boiler and boiler water pump control scheme, an auxiliary heat source control scheme, a fixed-frequency compressor control scheme, a circulating water pump control scheme and an air conditioner valve and hot water valve control scheme. The control scheme of the boiler and the boiler water pump is used as control judgment logic for opening and closing the boiler system; the auxiliary heat source control scheme is used as control judgment logic of a water path heater (auxiliary heat source); the control scheme of the fixed-frequency compressor is used as a control judgment logic for judging whether the fixed-frequency compressor is started to produce hot water when the variable-frequency compressor fails; the control scheme of the circulating water pump is used as control judgment logic for opening and closing the circulating water pump system; the air conditioner valve and hot water valve control scheme is used as control judgment logic for opening and closing of the air conditioner valve and the hot water valve. Along with the working condition of the heat pump system changing, the boiler system, the water path heater system, the fixed-frequency compressor, the circulating water pump, the air conditioning valve and the hot water valve make corresponding execution commands according to the real-time heat supply requirement of the heat pump system, and the energy consumption of the heat pump system can be reduced to the minimum degree while the on-off state of each part is ensured to be matched with the real-time heat supply requirement of the heat pump system.
Of course, the above is a preferred embodiment of the present invention. It should be noted that, for a person skilled in the art, several modifications and refinements can be made without departing from the basic principle of the invention, and these modifications and refinements are also considered to be within the protective scope of the invention.
Claims (9)
1. The intelligent control scheme of the heat pump system comprises a boiler and boiler water pump control scheme, and is characterized in that the boiler and boiler water pump control scheme comprises the following steps:
acquiring the ambient temperature of a heat pump system, the stop operation time of a boiler, the temperature controller on-off state of the boiler and the jumper selection condition of a main control board, and determining whether to start the boiler and a boiler water pump according to the acquired ambient temperature, the stop operation time of the boiler, the temperature controller on-off state of the boiler and the jumper selection condition of the main control board;
the method comprises the steps of obtaining the ambient temperature of a heat pump system, the on-off state of a temperature controller of a boiler and the running time of the boiler, and determining whether to stop running the boiler and a boiler water pump according to the obtained ambient temperature, the on-off state of the temperature controller of the boiler and the running time of the boiler.
2. The intelligent control scheme for the heat pump system according to claim 1, wherein the determining whether to start the boiler and the boiler water pump according to the obtained ambient temperature, the stop operation time of the boiler, the temperature controller on-off state of the boiler and the main control board jumper selection condition comprises:
and when the following conditions are met, the boiler and the boiler water pump are started:
c110: the ambient temperature is less than 5 ℃;
c120: the stop operation time of the boiler is more than 10 min;
c130: the temperature controller of the boiler is in a switch-on state;
c140: and the jumper selection condition of the main control board is to select the boiler function.
3. The intelligent control scheme of the heat pump system according to claim 1, wherein the determining whether to stop operating the boiler and the boiler water pump according to the acquired ambient temperature, the thermostat switch state of the boiler and the operating time of the boiler comprises:
when any of the following conditions is met, the boiler and the boiler water pump stop operating:
c210: the ambient temperature is greater than 7 ℃ and the running time of the boiler is greater than 10 min;
c220: the switch state of the temperature controller of the boiler is in an off state.
4. The heat pump system intelligent control scheme of claim 1, further comprising an auxiliary heat source control scheme, the auxiliary heat source control scheme comprising the steps of:
acquiring the ambient temperature of a heat pump system, the continuous operation time of a compressor and the water inlet temperature of a heat exchanger, and determining whether to start an auxiliary heat source according to the acquired ambient temperature, the continuous operation time of the compressor and the water inlet temperature of the heat exchanger;
the method comprises the steps of obtaining the ambient temperature of a heat pump system and the water inlet temperature of a heat exchanger, and determining whether to close an auxiliary heat source according to the obtained ambient temperature and the water inlet temperature of the heat exchanger.
5. The intelligent control scheme for the heat pump system according to claim 4, wherein the determining whether to turn on the auxiliary heat source according to the acquired ambient temperature, the continuous operation time of the compressor and the inlet water temperature of the heat exchanger comprises:
and when the following conditions are met, the auxiliary heat source is started:
c310: the ambient temperature is less than 5 ℃;
c320: the continuous operation time of the compressor is more than 30 min;
c330: the heating set temperature is higher than the water inlet temperature of the heat exchanger by more than 3 ℃.
6. The intelligent control scheme for the heat pump system according to claim 4, wherein the determining whether to turn off the auxiliary heat source according to the acquired ambient temperature and the intake water temperature of the heat exchanger comprises:
when any of the following conditions is met, the auxiliary heat source is turned off:
c410: the ambient temperature is greater than 7 ℃;
c420: the heating set temperature is equal to the water inlet temperature of the heat exchanger.
7. The heat pump system intelligent control scheme of claim 1, further comprising a fixed-frequency compressor control scheme, the fixed-frequency compressor control scheme comprising the steps of:
s110: acquiring the running state of the variable frequency compressor, if the variable frequency compressor is in a fault state, starting the fixed frequency compressor to produce hot water, and if the variable frequency compressor is not in the fault state, entering step S120;
s120: and acquiring the continuous opening time and the hot water temperature of the variable frequency compressor, and if the hot water still cannot reach 2 times of the range of the set temperature and the control return difference temperature after the variable frequency compressor is continuously opened for 30 minutes, opening the fixed frequency compressor to produce hot water.
8. The intelligent control scheme for the heat pump system according to claim 1, further comprising a circulating water pump control scheme, said circulating water pump control scheme comprising the steps of:
s210: acquiring the on-off state of the wire controller, if the wire controller is in the off state, turning off the circulating water pump, and if the wire controller is in the on state, entering the step S220;
s220: acquiring a fault alarm signal of a water flow switch, if the water flow switch sends the fault alarm signal, not starting or closing the circulating water pump, if the water flow switch does not send the fault alarm signal, starting the circulating water pump, and entering step S230;
s230: and acquiring the ambient temperature of the heat pump system, judging whether the ambient temperature reaches the preset overtemperature shutdown temperature of the compressor, if so, closing the circulating water pump, and restarting the circulating water pump after 5 min.
9. The intelligent control scheme for the heat pump system according to claim 8, further comprising an air conditioning valve and hot water valve control scheme, said air conditioning valve and hot water valve control scheme comprising the steps of:
s310: acquiring the on-off state of the circulating water pump, if the circulating water pump is in the off state, closing an air conditioner valve and a hot water valve, and if the circulating water pump is in the on state, entering step S320;
s320: and acquiring an operation mode of the heat pump system, if the operation mode is refrigeration or heating, opening the air conditioning valve, and if the operation mode is heating water, opening the hot water valve.
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