CN113899073A - Control system and method for circulating water pump of hot water unit - Google Patents
Control system and method for circulating water pump of hot water unit Download PDFInfo
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- CN113899073A CN113899073A CN202111273506.6A CN202111273506A CN113899073A CN 113899073 A CN113899073 A CN 113899073A CN 202111273506 A CN202111273506 A CN 202111273506A CN 113899073 A CN113899073 A CN 113899073A
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- water pump
- circulating water
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- controller
- control
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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
-
- 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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- 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 control system of a circulating water pump of a hot water unit, which comprises a controller, at least two groups of module machines and a circulating water pump, wherein each group of module machines is provided with an independent refrigerant system; the controller is respectively in communication connection with each group of modular machines, sends a loading or unloading instruction, receives a starting or stopping request of the circulating water pump of each modular machine, and sends a circulating water pump control instruction; and the module machines obtain control instructions and control the circulating water pump by combining self requirements. Through the cooperative work among the multi-module machine, the controller and the circulating water pump, each module machine obtains a control instruction and combines the self requirement to control the circulating water pump, so that the problem of the coordinated and matched operation of a plurality of independent refrigerant systems and a circulating water pump water heating system is solved.
Description
Technical Field
The invention relates to an air source heat pump system, in particular to a control system and a control method for a circulating water pump of a hot water unit.
Background
Generally, an air source heat pump system typically has three sets of circulation lines: the first circulation pipeline is a water heating system composed of a water circulation pump, a water tank and the like; the second circulation pipeline is a refrigerant system consisting of a compressor, a refrigerant pipe, an electronic expansion valve and a capillary pipe; the third circulating pipe is a water supply system consisting of a water supply pump, a water supply pipe and a water supply tail end. Usually, when a refrigerant system runs or meets the condition of circulating water anti-freezing protection, a circulating water pump water heating system is started to run, and when the refrigerant system stops or fails, the circulating water pump is closed. In the prior art, compared with a single-module hot water unit, the multi-module hot water unit has a plurality of independent refrigerant systems, and the plurality of independent refrigerant systems and the water heating system need to be coordinated and matched in work and operation. In practical engineering application, a first module is generally appointed in a module system to complete calculation control of the circulating water pump, at the moment, the first module needs to complete a lot of calculation workload, requirements on a module control chip are high, and when the first module has communication faults and other problems, particularly in winter, when irreversible problems such as frost crack of a water pipe and the like caused by the faults of the first module occur, the whole module system is in a paralyzed state and cannot work.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. In view of this, the technical problems to be solved by the present invention are: the control system of the circulating water pump of the hot water unit is provided to solve the problem that a plurality of independent refrigerant systems and a circulating water pump water heating system are in coordination and cooperation operation.
In order to achieve the purpose, the invention provides a control system of a circulating water pump of a hot water unit, which comprises a controller, a module machine and the circulating water pump, and is characterized in that: the modular machines are at least two groups, and each group of modular machines is provided with an independent refrigerant system; the controller is respectively in communication connection with each group of modular machines, sends a loading or unloading instruction, receives a starting or stopping request of the circulating water pump of each modular machine, and sends a circulating water pump control instruction; and the module machines obtain control instructions and control the circulating water pump by combining self requirements.
Specifically, after receiving the power-on request, the controller determines a loading or unloading sequence of each module machine according to a capacity requirement, an operation time of each module, and a state of each module machine, and loads or unloads each module machine.
Further, when the controller sends a loading instruction to any one module machine, the module machine opens the circulating water pump and sends a request for opening the circulating water pump to the controller when the module machine has no relation with the fault of the circulating water pump according to the control requirement, and the controller sends a broadcasting instruction for opening the circulating water pump to the module machine according to the request; when the controller sends an unloading instruction to any module, after the module machine finishes unloading according to a control requirement, if the circulating water pump needs to be closed, a request for closing the circulating water pump is sent to the controller, if all the modules relate to a request for closing the circulating water pump, the controller sends a broadcasting instruction for closing the circulating water pump to the module machine according to the request, and if not, the module machine keeps the starting state of the circulating water pump.
Further, each module, even in the unloaded state, sends a request for turning on the circulating water pump to the controller when the circulating water pump is turned on immediately if the anti-freezing protection is met.
The invention also provides a control method of the circulating water pump of the hot water unit, which is characterized by comprising the following steps: the system comprises a controller, a circulating water pump and at least two groups of module machines, wherein each group of module machines is provided with an independent refrigerant system; the controller is respectively in communication connection with the modules, when the controller receives a starting-up or shutdown request of each module machine, a circulating water pump control instruction is sent, and each module obtains the control instruction and controls the circulating water pump by combining the self requirement.
Further, the control instruction is a start-up or shut-down instruction of the circulating water pump, which is sent to the modular machines after the controller determines the loading or unloading sequence of each modular machine according to the capacity requirement, the running time of each modular machine and the state of each modular machine and finishes loading or unloading each modular machine.
Particularly, the modules obtain the control instruction and control the circulating water pump by combining the self requirements, and the control method comprises the following steps,
s101: judging the module anti-freezing protection, and executing S102 when the module has the anti-freezing protection, or executing S103;
s102: opening a circulating water pump by a module;
s103: judging whether the module has water flow switch water flow abnormity and other water pump shutdown faults, if so, executing S104, otherwise, executing S105;
s104: the module turns off the circulating water pump;
s105: judging whether a controller issues a circulating water pump starting instruction, if so, executing S106, otherwise, executing S107;
s106: opening a circulating water pump by a module;
s107: judging whether the module has a loading instruction, if so, executing S108, otherwise, executing S109;
s108: opening a circulating water pump by a module;
s109: the module turns off the circulating water pump.
In particular, the controller sending a circulating water pump control command has the steps of,
step 1: judging whether the controller receives a request for starting the circulating water pump, if so, executing the step 2, otherwise, executing the step 3;
step 2: the controller sends a circulating water pump starting broadcast instruction;
and step 3: and if all the modules have no circulating water pump starting request, the controller sends a circulating water pump closing broadcast instruction.
The invention has the beneficial effects that: the invention discloses a control system of a circulating water pump of a hot water unit, which solves the problem of coordinated and matched operation of a plurality of independent refrigerant systems and a water heating system of the circulating water pump through cooperative work among a plurality of module machines, a controller and the circulating water pump, and a solving way that each module machine obtains a control instruction and controls the circulating water pump by combining self requirements.
Drawings
Fig. 1 is a schematic diagram of a control system framework of a circulating water pump of a hot water unit according to the present invention;
FIG. 2 is a flow chart of a control method of a circulating water pump of a hot water unit according to the present invention;
fig. 3 is a flow chart of the control method for the circulating water pump of the hot water unit, in which each module obtains the control instruction and controls the circulating water pump according to its own requirement;
fig. 4 is a flowchart of sending a control command of the circulating water pump by the controller of the control method of the circulating water pump of the water heater unit according to the invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention discloses a control system of a circulating water pump of a hot water unit, which comprises a controller, at least two groups of module machines and a circulating water pump, wherein each group of module machines is provided with an independent refrigerant system; the controller is respectively in communication connection with each group of modular machines, sends a loading or unloading instruction, receives a starting or stopping request of the circulating water pump of each modular machine, and sends a circulating water pump control instruction; and the module machines obtain control instructions and control the circulating water pump by combining self requirements. Through the cooperative work among the multi-module machine, the controller and the circulating water pump, each module machine obtains a control instruction and combines the self requirement to control the circulating water pump, so that the problem of the coordinated and matched operation of a plurality of independent refrigerant systems and a circulating water pump water heating system is solved.
Example 1:
the invention discloses a control system of a circulating water pump of a hot water unit, which comprises a controller, at least two groups of module machines and a circulating water pump, wherein each module machine is provided with an independent refrigerant system; in a normal working mode, after a controller of the hot water unit receives a starting request of a circulating water pump of each module machine, the loading and unloading sequence of each module machine is determined according to capacity requirements, the running time of each module and the state of each module, and loading and unloading of each module machine are carried out; when the controller sends a loading instruction to any module machine, the module machine opens the circulating water pump and sends a request for opening the circulating water pump to the controller according to the control requirement and regardless of the fault of the circulating water pump; when the controller sends an unloading instruction to any module machine, if the module machine needs to close the circulating water pump after unloading according to the control requirement, the module machine sends a request for closing the circulating water pump to the controller; the method comprises the steps that when a controller receives a circulating water pump opening request sent by any one module machine, a circulating water pump opening broadcast instruction is sent to the module machine; the method comprises the following steps that when a controller receives requests of all module machines for closing the circulating water pumps, a circulating water pump closing broadcast instruction is sent to the module machines; each module machine, even in the unloaded state, turns on the circulating water pump and sends a request to turn on the circulating water pump to the controller if freeze protection is satisfied.
Furthermore, when each module machine has a circulating water pump starting requirement or receives a circulating water pump starting broadcast instruction, if the module does not have a fault of the circulating water pump, the module machine executes a circulating water pump starting action; and if the module does not have the circulating water pump opening requirement and does not receive the controller circulating water pump opening instruction, executing the action of closing the circulating water pump. If the module machine and the controller are in the communication loss state, the corresponding states are cleared respectively. According to the control of the multi-module hot water unit circulating water pump, the control of a single-module circulating water pump can be met, the control of a multi-module circulating water pump can also be met, and meanwhile, the unit circulating water pump can be arranged on any one module of the multi-module machine and can also be simultaneously controlled by two or more of the modules. Except that the circulating water pump can be freely configured in any module, the irreversible damage caused when the module breaks down when the circulating water pump control is calculated by one module in the prior art can be avoided. In this embodiment, through cooperative work among the multi-module machine, the controller and the circulating water pump, each module machine obtains a control instruction and combines a self-demand to control the circulating water pump, so as to solve the problem of coordinated and matched operation of a plurality of independent refrigerant systems and a circulating water pump water heating system.
Example 2:
the invention also discloses a control method of the circulating water pump of the hot water unit, which comprises a controller, the circulating water pump and the module machines, wherein the module machines are at least two groups, and each group of the module machines is provided with an independent refrigerant system; the controller is respectively in communication connection with the modules, when the controller receives a starting-up or shutdown request of each module machine, a circulating water pump control instruction is sent, and each module obtains the control instruction and controls the circulating water pump by combining the self requirement.
Further, the control instruction is a start-up or shut-down instruction of the circulating water pump, which is sent to the modular machines after the controller determines the loading or unloading sequence of each modular machine according to the capacity requirement, the running time of each modular machine and the state of each modular machine and finishes loading or unloading each modular machine.
Particularly, the modules obtain the control instruction and control the circulating water pump by combining the self requirements, and the method comprises the following steps:
s101: judging the module anti-freezing protection, and executing S102 when the module has the anti-freezing protection, or executing S103;
s102: opening a circulating water pump by a module;
s103: judging whether the module has water flow switch water flow abnormity and other water pump shutdown faults, if so, executing S104, otherwise, executing S105;
s104: the module turns off the circulating water pump;
s105: judging whether a controller issues a circulating water pump starting instruction, if so, executing S106, otherwise, executing S107;
s106: opening a circulating water pump by a module;
s107: judging whether the module has a loading instruction, if so, executing S108, otherwise, executing S109;
s108: opening a circulating water pump by a module;
s109: the module turns off the circulating water pump.
Specifically, the controller sends a circulating water pump control command and comprises the following steps:
step 1: judging whether the controller receives a request for starting the circulating water pump, if so, executing the step 2, otherwise, executing the step 3;
step 2: the controller sends a circulating water pump starting broadcast instruction;
and step 3: and if all the modules have no circulating water pump starting request, the controller sends a circulating water pump closing broadcast instruction.
The control method disclosed in this embodiment enables the multiple module machines to cooperate with the controller and the circulating water pump, and each module machine obtains a control instruction and combines with its own requirements to control the circulating water pump, so as to solve the problem that the multiple independent refrigerant systems and the circulating water pump water heating system operate in a coordinated and matched manner.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (8)
1. The utility model provides a control system of hot water unit circulating water pump, includes controller, module machine, circulating water pump, characterized in that: the modular machines are at least two groups, and each group of modular machines is provided with an independent refrigerant system; the controller is respectively in communication connection with each group of modular machines, sends a loading or unloading instruction, receives a starting or stopping request of the circulating water pump of each modular machine, and sends a circulating water pump control instruction; and the module machines obtain control instructions and control the circulating water pump by combining self requirements.
2. The control system of claim 1, wherein the control system comprises: and after receiving the starting request, the controller determines the loading or unloading sequence of each module machine according to the capacity requirement, the running time of each module and the state of each module machine, and loads or unloads each module machine.
3. The control system of claim 1, wherein the control system comprises: when the controller sends a loading instruction to any module machine, the module machine opens the circulating water pump and sends a request for opening the circulating water pump to the controller when the module machine has no relation with the fault of the circulating water pump according to the control requirement, and the controller sends a broadcasting instruction for opening the circulating water pump to each module machine in the system according to the request; when the controller sends an unloading instruction to any module, after the module machine finishes unloading according to a control requirement, if the circulating water pump needs to be closed, a request for closing the circulating water pump is sent to the controller, if all the modules relate to a request for closing the circulating water pump, the controller sends a broadcasting instruction for closing the circulating water pump to the module machine according to the request, and if not, the module machine keeps the starting state of the circulating water pump.
4. A control system for a circulating water pump of a hot water unit according to any one of claims 1 to 3, characterized in that: and each module is in an unloading state, and if the anti-freezing protection is met, the circulating water pump is immediately turned on, and simultaneously, a request for turning on the circulating water pump is also sent to the controller.
5. A control method of a circulating water pump of a hot water unit is characterized in that: the system comprises a controller, a circulating water pump and at least two groups of module machines, wherein each group of module machines is provided with an independent refrigerant system; the controller is in communication connection with the modules respectively, when the controller receives a starting-up or shutdown request of the circulating water pump of each module machine, a circulating water pump control instruction is sent, and each module obtains the control instruction and controls the circulating water pump by combining self requirements.
6. The control method of the circulating water pump of the water heating unit as claimed in claim 5, wherein: the control instruction is a starting or shutdown instruction of the circulating water pump sent to the modular machines after the controller determines the loading or unloading sequence of the modular machines according to the capacity requirement, the running time of the modular machines and the states of the modular machines and finishes loading or unloading the modular machines.
7. The control method of the circulating water pump of the water heating unit as claimed in claim 5, wherein: the modules obtain the control instruction and control the circulating water pump by combining the self requirements, and the control method comprises the following steps,
s101: judging the module anti-freezing protection, and executing S102 when the module has the anti-freezing protection, or executing S103;
s102: opening a circulating water pump by a module;
s103: judging whether the module has water flow switch water flow abnormity and other water pump shutdown faults, if so, executing S104, otherwise, executing S105;
s104: the module turns off the circulating water pump;
s105: judging whether a controller issues a circulating water pump starting instruction, if so, executing S106, otherwise, executing S107;
s106: opening a circulating water pump by a module;
s107: judging whether the module has a loading instruction, if so, executing S108, otherwise, executing S109;
s108: opening a circulating water pump by a module;
s109: the module turns off the circulating water pump.
8. The control method of the circulating water pump of the water heating unit as claimed in claim 5, wherein: the controller sending a circulating water pump control command has the steps of,
step 1: judging whether the controller receives a request for starting the circulating water pump, if so, executing the step 2, otherwise, executing the step 3;
step 2: the controller sends a circulating water pump starting broadcast instruction;
and step 3: and if all the modules have no circulating water pump starting request, the controller sends a circulating water pump closing broadcast instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111273506.6A CN113899073A (en) | 2021-10-29 | 2021-10-29 | Control system and method for circulating water pump of hot water unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111273506.6A CN113899073A (en) | 2021-10-29 | 2021-10-29 | Control system and method for circulating water pump of hot water unit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007107741A (en) * | 2005-10-11 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Water heater |
| CN103090536A (en) * | 2011-11-03 | 2013-05-08 | 珠海格力电器股份有限公司 | Heat pump water heater system, and method and device for controlling same |
| CN103267362A (en) * | 2013-06-17 | 2013-08-28 | 江苏天舒电器有限公司 | Constant temperature flow control method for heat pump water heater and double-system unit using same |
| CN107449107A (en) * | 2017-07-13 | 2017-12-08 | 珠海格力电器股份有限公司 | Multimode air-conditioner set water pump dispatch control method, water pump system and air-conditioner set |
| CN110793161A (en) * | 2019-11-01 | 2020-02-14 | 青岛海信日立空调系统有限公司 | Air-cooled module unit |
| CN111023567A (en) * | 2019-12-31 | 2020-04-17 | 青岛海信日立空调系统有限公司 | Hot water unit |
| CN112833584A (en) * | 2020-12-01 | 2021-05-25 | 青岛海尔新能源电器有限公司 | Heat pump module unit and anti-freezing control method thereof |
-
2021
- 2021-10-29 CN CN202111273506.6A patent/CN113899073A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007107741A (en) * | 2005-10-11 | 2007-04-26 | Matsushita Electric Ind Co Ltd | Water heater |
| CN103090536A (en) * | 2011-11-03 | 2013-05-08 | 珠海格力电器股份有限公司 | Heat pump water heater system, and method and device for controlling same |
| CN103267362A (en) * | 2013-06-17 | 2013-08-28 | 江苏天舒电器有限公司 | Constant temperature flow control method for heat pump water heater and double-system unit using same |
| CN107449107A (en) * | 2017-07-13 | 2017-12-08 | 珠海格力电器股份有限公司 | Multimode air-conditioner set water pump dispatch control method, water pump system and air-conditioner set |
| CN110793161A (en) * | 2019-11-01 | 2020-02-14 | 青岛海信日立空调系统有限公司 | Air-cooled module unit |
| CN111023567A (en) * | 2019-12-31 | 2020-04-17 | 青岛海信日立空调系统有限公司 | Hot water unit |
| CN112833584A (en) * | 2020-12-01 | 2021-05-25 | 青岛海尔新能源电器有限公司 | Heat pump module unit and anti-freezing control method thereof |
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Application publication date: 20220107 |