CN109237583B - Air source heat pump central heating system and control method - Google Patents
Air source heat pump central heating system and control method Download PDFInfo
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- CN109237583B CN109237583B CN201811180536.0A CN201811180536A CN109237583B CN 109237583 B CN109237583 B CN 109237583B CN 201811180536 A CN201811180536 A CN 201811180536A CN 109237583 B CN109237583 B CN 109237583B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 181
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 19
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
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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 relates to the technical field of heating power, in particular to an air source heat pump central heating system, which comprises the following components: the water storage device comprises a plurality of air source heat pumps (1) which are arranged in parallel and a water storage device (2) which is connected with the air source heat pumps, wherein the water outlet of the water storage device is connected to a using end (3), cold water discharged from the using end flows back to the air source heat pumps through the water storage device for circulation, and the communication quantity of the air source heat pumps and the water storage device is adjustable. The control method is characterized in that all the air source heat pumps are started, hot water is supplied to the water storage device, further water is supplied to the user end, and the corresponding preset number of air source heat pumps are turned off or on step by step according to the difference between the temperature of the hot water entering the water storage device and the first preset temperature until the temperature of the hot water entering the water storage device reaches or is maintained at the first preset temperature. The invention provides an air source heat pump central heating system with small energy consumption and long service life of a compressor and capable of guaranteeing heat supply and a control method.
Description
Technical Field
The invention relates to the technical field of heating power, in particular to an air source heat pump central heating system and a control method.
Background
The air source heat pump absorbs low-temperature heat in the air, is gasified by a fluorine medium, is pressurized and heated after being compressed by a compressor, is converted into water for heating by a heat exchanger, and the compressed high-temperature heat energy is used for heating the water temperature. Because the air source heat pump works through medium heat exchange, the air source heat pump does not need an electric heating element to be in direct contact with water, avoids the danger of electric leakage of the electric water heater, also prevents the danger of possible explosion and poisoning of the gas water heater, and more effectively controls the air pollution caused by exhaust gas discharged by the gas water heater. When the air source heat pump is used for central heating, a plurality of air source heat pumps are needed to be used simultaneously due to larger heat demand, and the air source heat pumps are always in full-load operation, so that the energy consumption is larger, and the service life of a compressor in the air source heat pump is shorter.
Disclosure of Invention
Therefore, the invention aims to overcome the defects of the prior art that a plurality of air source heat pumps work simultaneously during central heating, the energy consumption is large and the service life of a compressor is short, thereby providing an air source heat pump central heating system which has the advantages of small energy consumption, long service life of the compressor and heat supply assurance and a control method.
In order to solve the technical problems, the present invention provides an air source heat pump central heating system, comprising:
the water storage device is connected to the water outlet of the water storage device, cold water discharged from the use end flows back to the air source heat pump through the water storage device for circulation, and the communication quantity of the air source heat pump and the water storage device is adjustable.
The air source heat pump central heating system is characterized in that a first water inlet pipe and a first water return pipe are arranged between the air source heat pump and the water storage device, a second water inlet pipe and a second water return pipe are arranged between the water storage device and the use end, and the outlets and inlets of the air source heat pump are respectively communicated with the first water inlet pipe and the first water return pipe.
The air source heat pump central heating system also comprises a first pump body arranged on the first water return pipe and a second pump body arranged on the second water inlet pipe.
And the air source heat pump central heating system is characterized in that a first temperature detection device is further arranged on the first water return pipe, and a second temperature detection device is further arranged on the second water return pipe.
The air source heat pump central heating system further comprises at least one third temperature detection device arranged on the first water inlet pipe, the first water return pipe, the second water inlet pipe or the second water return pipe.
The invention also provides a control method of the central heating system of the air source heat pump, which is characterized in that all the air source heat pumps are started, hot water is supplied to the water storage device, then water is supplied to the user end, and the corresponding preset number of air source heat pumps are turned off or on step by step according to the difference value between the temperature of the hot water entering the water storage device and the first preset temperature until the temperature of the hot water entering the water storage device reaches or is maintained at the first preset temperature.
The control method for the air source heat pump central heating system comprises the following specific steps of turning off or turning on the air source heat pumps with corresponding preset numbers step by step:
When the temperature of the hot water in the water storage device reaches a second preset temperature, turning off or turning on a first preset number of air source heat pumps; continuing to operate for the first preset time, turning off or on the second preset number of air source heat pumps when the third preset temperature is reached, and continuing to operate for the second preset time, and circulating until the first preset temperature is reached or maintained.
The control method of the air source heat pump central heating system is characterized in that the air source heat pump is turned off in sequence according to the first turn-on sequence of the air source heat pump when the air source heat pump is turned off, and the air source heat pump is turned on in sequence according to the last turn-off sequence of the air source heat pump when the air source heat pump is turned on.
According to the control method of the air source heat pump central heating system, when the second temperature detection device detects that the water temperature in the second water return pipe is lower than the fourth preset temperature in the first preset time interval, the second pump body operates until the fourth preset temperature is reached, and the operation is stopped; or when the second temperature detection device detects that the water temperature in the second water return pipe is lower than a fifth preset temperature, the second pump body operates until the fifth preset temperature is reached, and the operation is stopped.
When the third temperature detection device detects that the water temperature of the pipeline is lower than a sixth preset temperature, the second pump body supplies hot water in the water storage device to the using end, and the first pump body supplies cold water discharged from the using end to the air source heat pump; when the water temperature of the pipeline is continuously reduced after the third preset time is running, the air source heat pump works to provide hot water for the water storage device until the water temperature reaches the seventh preset temperature, and the air source heat pump, the first pump body and the second pump body are closed, wherein the seventh preset temperature is higher than the sixth preset temperature.
The technical scheme of the invention has the following advantages:
1. According to the air source heat pump central heating system provided by the invention, the communication quantity of the plurality of air source heat pumps which are arranged in parallel and the water storage device is adjustable, so that the running quantity of the air source heat pumps can be adjusted according to actual requirements, the energy consumption of the central heating system is reduced, the service life of the compressor is prolonged, and the heat supply is ensured.
2. According to the air source heat pump central heating system provided by the invention, the outlets and inlets of the plurality of air source heat pumps are respectively communicated with the first water inlet pipe and the first water return pipe, so that the structure of the whole system is simplified, and the operation is convenient.
3. According to the air source heat pump central heating system provided by the invention, the first temperature detection device, the second temperature detection device and the third temperature detection device can be arranged to enable the air source heat pump to be started as required so as to meet the use requirement, and meanwhile, the anti-freezing function is achieved.
4. According to the control method of the air source heat pump central heating system, the air source heat pumps with corresponding preset numbers are turned off or on step by step according to the difference between the temperature of hot water entering the water storage device and the first preset temperature until the temperature of the hot water entering the water storage device reaches or is maintained at the first preset temperature, and the needed hot water is provided for a user end. In the initial stage, all the air source heat pumps work simultaneously, so that the water temperature can be quickly increased, and when the water temperature reaches a certain temperature, some air source heat pumps can be properly turned off, so that the temperature is slowly increased, the overall energy consumption of the system is reduced, and meanwhile, the heat supply is ensured; when the water temperature is reduced, the corresponding number of air source heat pumps are started step by step so as to ensure the constant water temperature.
5. The control method of the air source heat pump central heating system provided by the invention is characterized in that the air source heat pump is turned off sequentially according to the first turn-on sequence of the air source heat pump when the air source heat pump is turned off, and the air source heat pump is turned on sequentially according to the last turn-off sequence of the air source heat pump when the air source heat pump is turned on. This will allow the running time of all air source heat pumps to be substantially balanced, extending the service life.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an air source heat pump central heating system provided by the invention.
Reference numerals illustrate:
1-an air source heat pump; 2-a water storage device; 3-a user end; 4-a first water inlet pipe; 5-a first return pipe; 6-a second water inlet pipe; 7-a second return pipe; 51-a first pump body; 52-a first temperature detection device; 61-a second pump body; 71-a second temperature detection device.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment of the central heating system of the air source heat pump shown in fig. 1 can be used for central heating in residential areas or office areas, and comprises a plurality of air source heat pumps 1 which are arranged in parallel and a water storage device 2 connected with the air source heat pumps 1, wherein the water storage device 2 in the embodiment is a water tank, a water outlet of the water storage device 2 is connected to a using end 3, cold water discharged from the using end 3 flows back to the air source heat pumps 1 through the water storage device 2 for circulation, the communication quantity between the air source heat pumps 1 and the water storage device 2 is adjustable, a valve can be arranged at an outlet of each air source heat pump 1, and the communication condition between the air source heat pump 1 and the water tank is controlled by opening the valve; of course, the number of the pipes between the water storage device 2 and the use end 3 can be adjusted according to actual requirements.
The air source heat pump device is characterized in that a first water inlet pipe 4 and a first water return pipe 5 are arranged between the air source heat pump 1 and the water storage device 2, a second water inlet pipe 6 and a second water return pipe 7 are arranged between the water storage device 2 and the use end 3, and the outlets and inlets of the air source heat pump 1 are respectively communicated to the first water inlet pipe 4 and the first water return pipe 5 through branch pipes. Valves are provided on the branch pipes to control the communication of the branch pipes with the first water inlet pipe 4 and the first water return pipe 5. The first water inlet pipe 4 is arranged on the upper portion of the water storage device 2, and the first water return pipe 5, the second water inlet pipe 6 and the second water return pipe 7 are arranged on the lower portion of the water storage device 2, so that hot water can flow out conveniently.
In order to facilitate the hot water of the water storage device 2 to be delivered to the use end 3 and the cold water delivered by the use end 3 to be delivered to the air source heat pump 1 again, the first water return pipe 5 is further provided with a first pump body 51, and the second water inlet pipe 6 is further provided with a second pump body 61. The first pump body 51 is a circulation pump, and can be selected to be turned off or run on standby according to the requirements of a user; the second pump body 61 is a floor heating pump, and can automatically adjust the start-stop function according to the water temperature or add the sectional temperature start-stop function at regular time according to the requirement, control the opening and closing of the water tank and perform heat compensation.
The first water return pipe 5 is further provided with a first temperature detection device 52, the second water return pipe 7 is further provided with a second temperature detection device 71, and the device further comprises at least one third temperature detection device 8 which is arranged on the first water inlet pipe 4, the first water return pipe 5, the second water inlet pipe 6 or the second water return pipe 7. The first temperature detecting means 52, the second temperature detecting means 71 and the third temperature detecting means are all temperature probes.
The control method of the central heating system of the air source heat pump comprises the steps of starting all the air source heat pumps 1, providing hot water to a water storage device 2, further providing water to a user end 3, and closing 2 air source heat pumps 1 when the temperature of the hot water in the water storage device 2 reaches 45 ℃; continuing to operate for 5min, closing 5 air source heat pumps 1 when the temperature reaches 48 ℃, continuing to operate for 3min until the temperature reaches or is maintained at a first preset temperature of 50 ℃, and during the period, after the rest 13 air source heat pumps 1 continuously operate for 18 hours, closing 7 air source heat pumps, and starting the other 7 air source heat pumps in a non-operating state to alternately operate in turn; when the operation is carried out for 30min and the water temperature is reduced to 48 ℃,2 air source heat pumps 1 which are started to be closed at first are turned on again until the water temperature reaches or is maintained at 50 ℃ again. When the air source heat pump 1 is turned off, the air source heat pump 1 is turned off in sequence according to the first turn-on sequence of the air source heat pump 1, and when the air source heat pump 1 is turned on, the air source heat pump 1 is turned on in sequence according to the last turn-off sequence of the air source heat pump 1, namely, 2 air source heat pumps 1 turned off first are turned on 2, 5 air source heat pumps turned off second are turned on 5 air source heat pumps turned on second, and 2 air source heat pumps turned on again are turned off 2 air source heat pumps turned on first, so that the air source heat pump 1 is turned on first, turned off first, and running time balance of all the air source heat pumps 1 is ensured as much as possible.
When the second temperature detecting means 71 is at 0 am: 00-8:00 or 18 pm: 00-24:00 detects that the water temperature in the second water return pipe 7 is lower than 35 ℃, the second pump body 61 operates until reaching 35 ℃, and the operation is stopped; when the second temperature detecting means 71 detects that the water temperature in the second return pipe 7 is lower than 30 deg.c, the second pump body 61 is operated until it reaches 30 deg.c, stopping the operation. When the third temperature detection device detects that the water temperature of the pipeline is lower than 5 ℃, the second pump body 61 supplies the hot water in the water storage device 2 to the using end 3, and the first pump body 51 sends the cold water discharged from the using end 3 to the air source heat pump 1 through the water storage device 2; when the water temperature of the pipeline is continuously reduced after the operation is performed for 10min, the air source heat pump 1 works to provide hot water for the water storage device 2 until the water temperature reaches 15 ℃, and the air source heat pump 1, the first pump body 51 and the second pump body 61 are closed.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (5)
1. A control method of an air source heat pump central heating system, characterized in that the air source heat pump central heating system comprises:
the water storage device comprises a plurality of air source heat pumps (1) which are arranged in parallel and a water storage device (2) which is connected with the air source heat pumps (1), wherein a water outlet of the water storage device (2) is connected to a using end (3), cold water discharged from the using end (3) flows back to the air source heat pumps (1) through the water storage device (2) to circulate, and the communication quantity of the air source heat pumps (1) and the water storage device (2) is adjustable;
A first water inlet pipe (4) and a first water return pipe (5) are arranged between the air source heat pump (1) and the water storage device (2), a second water inlet pipe (6) and a second water return pipe (7) are arranged between the water storage device (2) and the using end (3), and the outlets and inlets of a plurality of the air source heat pumps (1) are respectively communicated to the first water inlet pipe (4) and the first water return pipe (5);
the water pump further comprises a first pump body (51) arranged on the first water return pipe (5) and a second pump body (61) arranged on the second water inlet pipe (6);
The device also comprises at least one third temperature detection device arranged on the first water inlet pipe (4), the first water return pipe (5), the second water inlet pipe (6) or the second water return pipe (7);
Starting all the air source heat pumps (1), providing hot water to the water storage device (2), further providing water to the user end (3), and gradually closing or opening the corresponding preset number of air source heat pumps (1) according to the difference between the temperature of the hot water entering the water storage device (2) and the first preset temperature until the temperature of the hot water entering the water storage device (2) reaches or is maintained at the first preset temperature;
the specific method for closing or opening the air source heat pumps (1) with corresponding preset quantity step by step comprises the following steps:
When the temperature of the hot water in the water storage device (2) reaches a second preset temperature, the first preset number of air source heat pumps (1) are turned off or turned on; continuing to operate for a first predetermined time, turning off or on a second predetermined number of air source heat pumps (1) when a third predetermined temperature is reached, continuing to operate for a second predetermined time, and circulating until the first predetermined temperature is reached or maintained.
2. A control method of an air source heat pump central heating system according to claim 1, characterized in that the air source heat pump (1) is turned off sequentially in the first turn-on sequence of the air source heat pump (1) when the air source heat pump (1) is turned off, and the air source heat pump (1) is turned on sequentially in the last turn-off sequence of the air source heat pump (1).
3. A control method of an air source heat pump central heating system according to any one of claims 1-2, characterized in that when the second temperature detection means (71) detects that the water temperature in the second return pipe (7) is lower than a fourth predetermined temperature within a first predetermined time interval, the second pump body (61) is operated until the fourth predetermined temperature is reached, stopping the operation; or when the second temperature detection device (71) detects that the water temperature in the second water return pipe (7) is lower than a fifth preset temperature, the second pump body (61) operates until the fifth preset temperature is reached, and the operation is stopped.
4. A control method of an air source heat pump central heating system according to claim 3, characterized in that when the third temperature detection device detects that the water temperature of the pipeline is lower than a sixth preset temperature, the second pump body (61) supplies the hot water in the water storage device (2) to the use end (3), and the first pump body (51) sends cold water discharged from the use end (3) to the air source heat pump (1); when the water temperature of the pipeline is continuously reduced after the third preset time is operated, the air source heat pump (1) works, hot water is supplied to the water storage device (2), and the air source heat pump (1), the first pump body (51) and the second pump body (61) are closed until the water temperature reaches a seventh preset temperature, wherein the seventh preset temperature is higher than the sixth preset temperature.
5. The method for controlling a central heating system of an air source heat pump according to claim 1, wherein a first temperature detecting device (52) is further provided on the first water return pipe (5), and a second temperature detecting device (71) is further provided on the second water return pipe (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811180536.0A CN109237583B (en) | 2018-10-10 | 2018-10-10 | Air source heat pump central heating system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811180536.0A CN109237583B (en) | 2018-10-10 | 2018-10-10 | Air source heat pump central heating system and control method |
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| CN109237583A CN109237583A (en) | 2019-01-18 |
| CN109237583B true CN109237583B (en) | 2024-08-20 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110094847B (en) * | 2019-05-24 | 2020-08-14 | 珠海格力电器股份有限公司 | Method and device for efficiently controlling modular unit |
| CN112160897B (en) * | 2020-09-03 | 2022-07-08 | 广东Tcl智能暖通设备有限公司 | Water pump control method and device, two-joint supply system and computer readable storage medium |
| CN112629022B (en) * | 2020-12-21 | 2022-03-01 | 珠海格力电器股份有限公司 | Multi-split water heater control method and device and multi-split water heater |
| CN113606638B (en) * | 2021-10-11 | 2022-01-07 | 山东佐耀科技有限公司 | Accurately-adjusted air source heat pump group control method and system |
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| JP2003166750A (en) * | 2001-11-30 | 2003-06-13 | Denso Corp | Heat-pump type hot water supply device |
| JP2012047394A (en) * | 2010-08-26 | 2012-03-08 | Sanyo Electric Co Ltd | Heat pump device |
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| CN202008185U (en) * | 2011-04-29 | 2011-10-12 | 福州斯狄渢电热水器有限公司 | Comprehensive heat supply system for gas instantaneous water heater of solar air source heat pump |
| JP6079507B2 (en) * | 2013-08-29 | 2017-02-15 | 三菱電機株式会社 | Hot / cold water air conditioning system |
| CN203797785U (en) * | 2014-04-29 | 2014-08-27 | 挪信能源技术（上海）有限公司 | Linkage system of heating machine room with high-temperature ground source heat pump unit |
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| JP2003166750A (en) * | 2001-11-30 | 2003-06-13 | Denso Corp | Heat-pump type hot water supply device |
| JP2012047394A (en) * | 2010-08-26 | 2012-03-08 | Sanyo Electric Co Ltd | Heat pump device |
| CN107477653A (en) * | 2017-09-13 | 2017-12-15 | 韩德洪 | A kind of air energy heat supply energy-saving control system |
| CN208952198U (en) * | 2018-10-10 | 2019-06-07 | 浙江正理生能科技有限公司 | A kind of air source heat pump central heating system |
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