CN218600039U - Energy-saving air source heat pump energy supply system intelligently controlled - Google Patents
Energy-saving air source heat pump energy supply system intelligently controlled Download PDFInfo
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- CN218600039U CN218600039U CN202222359923.9U CN202222359923U CN218600039U CN 218600039 U CN218600039 U CN 218600039U CN 202222359923 U CN202222359923 U CN 202222359923U CN 218600039 U CN218600039 U CN 218600039U
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Abstract
The utility model provides an energy-saving air source heat pump energy supply system of intelligent control, including the circulation energy supply pipeline of intercommunication user fan coil and circulating water pump, it has a plurality of heat pump set to communicate through the mode of parallelly connecting on the circulation energy supply pipeline, the circulation energy supply pipeline includes supply channel and return water pipeline, the supply channel communicates with the outlet pipe of a plurality of heat pump set, the return water pipeline communicates with the inlet tube of a plurality of heat pump set; the energy supply system also comprises a control box and a data acquisition unit, wherein the control box is respectively electrically connected with the data acquisition unit, the circulating water pump and the plurality of heat pump units, the data acquisition unit is used for acquiring temperature data and pressure data on a circulating energy supply pipeline, and the control box is used for controlling the working states of the circulating water pump and the plurality of heat pump units; the utility model discloses can realize every air source heat pump set independent control, the flexibility of adjusting when having improved the system operation and the accuracy nature of cooling or heating regulation as required.
Description
Technical Field
The utility model relates to an air source heat pump technical field especially relates to an energy-saving air source heat pump energy supply system of intelligent control.
Background
The air source heat pump system is a dual-working-condition system which can transfer heat from indoor to outdoor and also can transfer heat from outdoor to indoor. This kind of system can be used for summer refrigeration, can be used to winter heating again, is used for the indoor thermal environment regulation of small-scale building extensively, especially under the background of current double carbon target, adopts air source heat pump system to replace gas and coal fired boiler etc. and is being used for winter heating and has concurrently the scheme of summer cooling at the same time and widely popularize nationwide. However, the air source heat pump system has small monomer scale, relatively simple equipment, extensive management, low intelligence degree and no automatic adaptation according to the change of cold and hot loads of a building, so that not only is energy consumption waste serious, but also the indoor thermal environment regulation effect is relatively poor.
The intelligent degree of the air source heat pump system is improved, the supply of cold and heat according to needs is realized by adopting an energy-saving control algorithm, and the method is an effective means for saving energy and improving indoor thermal comfort. However, the air source heat pump system has simple structure and limited adjustable parameters, and the difficulty of realizing the adjustment and control according to requirements is high. Aiming at the air source heat pump system, no effective intelligent control device and energy-saving control method exist at present, and the air source heat pump system has the characteristics of wide application range, large energy consumption, lack of energy-saving measures and the like, and cannot fully meet the requirements of building energy conservation and consumption reduction.
Disclosure of Invention
The utility model provides an energy-saving air source heat pump energy supply system of intelligent control has solved that prior art cavity air source heat pump system intelligent degree is low, can not be according to building cold and hot load change automatic adaptation, and the energy consumption is extravagant serious, indoor hot environment regulation effect subalternation problem.
The technical scheme of the utility model is realized like this:
an energy-saving air source heat pump energy supply system with intelligent control comprises a circulating energy supply pipeline communicated with a user fan coil and a circulating water pump, wherein the circulating energy supply pipeline is communicated with a plurality of heat pump units in a parallel connection mode and comprises a water supply pipeline and a water return pipeline, the water supply pipeline is communicated with water outlet pipes of the heat pump units, and the water return pipeline is communicated with water inlet pipes of the heat pump units; energy supply system still includes control box and data collection station, the control box is connected with data collection station, circulating water pump, a plurality of heat pump set electricity respectively, data collection station is used for gathering temperature data and pressure data on the circulation energy supply pipeline, the control box is used for controlling circulating water pump and a plurality of heat pump set's operating condition.
The utility model discloses a temperature data and pressure data on the circulation energy supply pipeline are gathered to data collection station, and the control box can be under the prerequisite of guaranteeing system's safety and stability operation and satisfying terminal cold or heat demand according to the temperature value and the water pressure value control heat pump set's of supply channel and return water pipeline the number of workstations and the rotational speed of water pump, improve the energy consumption of refrigeration or heat supply effect and furthest's saving heat pump set and water pump.
As the preferred proposal of the utility model, the data acquisition unit comprises a water supply temperature sensor and a return water temperature sensor which are connected with the control box; the water supply temperature sensor is arranged on the water supply pipeline and used for detecting water temperature data of the water supply pipeline; the return water temperature sensor is installed on the return water pipeline and used for detecting water temperature data of the return water pipeline.
As a preferred scheme of the present invention, the data collector includes an indoor temperature sensor and an outdoor temperature sensor connected to the control box, the indoor temperature sensor is used for detecting the indoor air temperature data of the energy supply area, and the outdoor temperature sensor is used for detecting the outdoor air temperature data of the energy supply area; through monitoring outdoor air temperature and indoor air temperature, can be so that system's cold volume or heat supply more accurate, not only can ensure the travelling comfort in room, can also reduce heat pump set's operation energy consumption by a wide margin.
As the preferred scheme of the utility model, the data acquisition unit comprises a water supply pressure sensor and a return water pressure sensor which are connected with the control box; the water supply pressure sensor is arranged on the water supply pipeline and used for detecting water pressure data of the water supply pipeline; the water return pressure sensor is installed on the water return pipeline and used for detecting water pressure data of the water return pipeline.
As a preferred scheme of the utility model, an electric switch valve and an electric switch valve actuator are arranged on a branch of the heat pump unit communicated with the circulating energy supply pipeline, and the electric switch valve actuator is respectively connected with the electric switch valve and the heat pump unit; the electric switch valve actuator is electrically connected with the heat pump unit, so that the switch linkage control of the electric switch valve and the heat pump unit is realized; when a certain heat pump unit is controlled by the control box to be closed, the corresponding electric switch valve can be closed, so that the circulating branch of the heat pump unit is cut off, water flow bypass is prevented, energy consumption can be saved, cooling or heating effects can be improved, and reliability and safety of system operation can be greatly improved.
As a preferable scheme of the utility model, a bypass pipeline is communicated between the water supply pipeline and the water return pipeline, an electric bypass valve and an electric bypass valve actuator are arranged on the bypass pipeline, and the electric bypass valve actuator is respectively connected with the electric bypass valve and the control box; the pressure difference value of the water supply pipeline and the pressure difference value of the water return pipeline are monitored, the monitored actual pressure difference value is compared with a maximum safety pressure difference threshold value preset by the system, when the monitored actual pressure difference value exceeds the maximum safety pressure difference threshold value, the control box controls the bypass valve to be opened through the bypass valve actuator, and the pressure difference value of the water supply pipeline and the pressure difference value of the water return pipeline are maintained below the maximum safety pressure difference threshold value of the system through bypassing a certain water flow, so that the safe operation of the system is ensured.
As the utility model discloses preferred scheme, circulating water pump is frequency conversion water pump, can adjust circulating water pump's operating frequency according to supply channel and return water pipeline's pressure differential value, adjusts the water pump rotational speed by circulating water pump's frequency conversion equipment, and then realizes the flow control to supply channel and return water pipeline to maintain supply channel and return water pipeline's pressure differential value in safe pressure differential range.
As a preferred scheme of the present invention, each heat pump unit is linked with the circulating water pump, that is, when any heat pump unit receives an opening instruction, the heat pump unit gives the opening instruction to the circulating water pump; when all heat pump units receive the closing instruction, the closing instruction is given to the circulating water pump, and then the reliability and the stability of the water circulation control of the system are ensured.
As the utility model discloses preferred scheme, energy supply system still includes communication module, the control box carries out data transmission through communication module and control backstage, and accessible communication module sends energy supply system's operation data to the control backstage, and the control backstage can be according to the best setting value of system operation data computing system, sets for threshold value, system return water temperature setting value etc. like water supply pipe and return water pipeline's pressure differential.
Advantageous effects
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) The utility model discloses a temperature data and pressure data on the circulation energy supply pipeline are gathered to data collection station, and the control box controls heat pump set's workstation number and the rotational speed of water pump according to the water temperature value and the water pressure value of supply channel and return water pipeline, can realize that every air source heat pump set independently controls, have improved the flexibility of adjusting and the accuracy nature of cooling or heating regulation as required when the system operation; the refrigeration or heat supply effect can be improved and the energy consumption of the heat pump unit and the water pump can be saved to the maximum extent on the premise of ensuring the safe and stable operation of the system and meeting the requirement of tail end cold or heat;
(2) The utility model discloses in every heat pump set branch road all set up electronic ooff valve, can turn off this branch road rivers when this heat pump set does not operate to prevent the rivers bypass, not only can practice thrift the energy consumption, can also improve cooling or heating effect; in addition, each heat pump unit and the branch electric switch valve of the heat pump unit are directly interlocked to be switched on and off through electric signals, namely when the heat pump unit receives a starting instruction, the electric switch valve is automatically instructed to be opened, and when the heat pump unit receives a closing instruction, the electric switch valve is automatically instructed to be closed, so that the reliability and the safety of system operation can be greatly improved;
(3) In the utility model, each heat pump unit is interlocked with the water pump, namely when any heat pump unit receives an opening instruction, the water pump is opened; when all heat pump units receive a closing instruction, the water feeding pump closes the instruction, so that the reliability and the stability of the water circulation control of the system are ensured;
(4) The utility model discloses a set up bypass pipeline and bypass valve between supply channel and return water pipeline, when the actual differential pressure value that monitors surpassed the maximum safe differential pressure threshold value, the control box control bypass valve was opened, through the certain rivers of bypass, maintained the differential pressure value of supply channel and return water pipeline below the maximum safe differential pressure threshold value of system, ensured the safe operation of system;
(5) The utility model discloses can adjust the operating frequency of circulating water pump according to the pressure differential value of supply channel and return water pipeline, the water pump rotational speed is adjusted, and then realizes the flow control to supply channel and return water pipeline to maintain the pressure differential value of supply channel and return water pipeline in safe pressure differential range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a control schematic diagram of an energy-saving air source heat pump energy supply system of the present invention with intelligent control;
in the figure: 1. a water circulating pump; 2. a heat pump unit; 3. an electrically operated on-off valve; 4. an electric switch valve actuator; 5. a water supply pressure sensor; 6. a backwater pressure sensor; 7. an electrically-powered bypass valve; 8. an electric bypass valve actuator; 9. a backwater temperature sensor; 10. a water supply temperature sensor; 11. a user fan coil; 12. an outdoor temperature sensor; 13. an indoor temperature sensor; 14. a control box; 15. a communication module; 16. and monitoring the background.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present embodiment provides an energy-saving air source heat pump energy supply system with intelligent control, including a circulation energy supply pipeline connecting a user fan coil 11 and a circulation water pump 1, where the circulation energy supply pipeline is connected with a plurality of heat pump units 2 in parallel, the circulation energy supply pipeline includes a water supply pipeline and a water return pipeline, the water supply pipeline is connected with water outlet pipes of the heat pump units 2, and the water return pipeline is connected with water inlet pipes of the heat pump units 2; the energy supply system still includes control box 14 and data collection station, control box 14 is connected with data collection station, circulating water pump 1, a plurality of heat pump set 2 electricity respectively, data collection station is used for gathering temperature data and pressure data on the circulation energy supply pipeline, control box 14 is used for controlling circulating water pump 1 and a plurality of heat pump set 2's operating condition.
As a preferable scheme of this embodiment, the data collector includes a water supply temperature sensor 10 and a water return temperature sensor 9 connected to the control box 14; the water supply temperature sensor 10 is installed on the water supply pipeline and used for detecting water temperature data of the water supply pipeline; and the return water temperature sensor 9 is arranged on the return water pipeline and used for detecting water temperature data of the return water pipeline.
As a preferable scheme of this embodiment, the data collector includes an indoor temperature sensor 13 and an outdoor temperature sensor 12 connected to the control box 14, the indoor temperature sensor 13 is configured to detect indoor air temperature data of an energy supply area, and the outdoor temperature sensor 12 is configured to detect outdoor air temperature data of the energy supply area; by monitoring the outdoor air temperature and the indoor air temperature, the system can supply cold or heat more accurately, thereby not only ensuring the comfort of a room, but also greatly reducing the running energy consumption of the heat pump unit 2.
When the outdoor temperature sensor 12 detects that the outdoor air temperature rises, the set value of the return water temperature of the system is reduced to increase the cooling capacity of the system; when the outdoor temperature sensor 12 detects that the outdoor temperature is reduced, the set value of the return water temperature of the system is increased to reduce the cooling capacity of the system. When the indoor temperature sensor 13 detects that the indoor temperature is higher than the set upper limit threshold, the set value of the return water temperature of the system is reduced to increase the cooling capacity of the system, and further the indoor temperature is maintained below the upper limit threshold; when the indoor temperature sensor 13 detects that the indoor temperature is lower than the set lower limit threshold, the set value of the return water temperature of the system is increased to reduce the cooling capacity of the system, and further, the indoor temperature is maintained above the lower limit threshold.
As a preferable scheme of this embodiment, the data collector includes a water supply pressure sensor 5 and a water return pressure sensor 6 connected to the control box 14; the water supply pressure sensor 5 is arranged on the water supply pipeline and used for detecting water pressure data of the water supply pipeline; and the return water pressure sensor 6 is arranged on the return water pipeline and used for detecting the water pressure data of the return water pipeline.
As a preferable scheme of this embodiment, an electric switch valve 3 and an electric switch valve actuator 4 are arranged on a branch of the heat pump unit 2 communicated with the circulating energy supply pipeline, and the electric switch valve actuator 4 is respectively connected with the electric switch valve 3 and the heat pump unit 2; the electric switch valve actuator 4 is electrically connected with the heat pump unit 2, so that the switch linkage control of the electric switch valve 3 and the heat pump unit 2 is realized; when a certain heat pump unit 2 is controlled to be closed by the control box 14, the corresponding electric switch valve 3 is also closed, so that the circulation branch of the heat pump unit 2 is cut off, water flow bypass is prevented, energy consumption can be saved, cooling or heating effects can be improved, and reliability and safety of system operation can be greatly improved.
As a preferable scheme of the present embodiment, a bypass pipeline is communicated between the water supply pipeline and the water return pipeline, an electric bypass valve 7 and an electric bypass valve actuator 8 are arranged on the bypass pipeline, and the electric bypass valve actuator 8 is respectively connected with the electric bypass valve 7 and the control box 14; by monitoring the differential pressure value of the water supply pipeline and the water return pipeline and comparing the monitored actual differential pressure value with the maximum safe differential pressure threshold value preset by the system, when the monitored actual differential pressure value exceeds the maximum safe differential pressure threshold value, the control box 14 controls the bypass valve to be opened through the bypass valve actuator, and by bypassing a certain water flow, the differential pressure value of the water supply pipeline and the water return pipeline is maintained below the maximum safe differential pressure threshold value of the system, so that the safe operation of the system is ensured.
As a preferable scheme of this embodiment, the circulating water pump 1 is a variable frequency water pump, the operating frequency of the circulating water pump 1 can be adjusted according to the differential pressure value of the water supply pipeline and the water return pipeline, the rotating speed of the water pump is adjusted by a frequency conversion device of the circulating water pump 1, and then the flow rate adjustment of the water supply pipeline and the water return pipeline is realized, so that the differential pressure value of the water supply pipeline and the water return pipeline is maintained within a safe differential pressure range.
As a preferable scheme of this embodiment, each heat pump unit 2 is in linkage connection with the circulating water pump 1, that is, when any one heat pump unit 2 receives a start instruction, the start instruction is given to the circulating water pump 1; when all the heat pump units 2 receive the closing instruction, the closing instruction is given to the circulating water pump 1, and then the reliability and the stability of the water circulation control of the system are ensured.
As a preferable scheme of this embodiment, the energy supply system further includes a communication module 15, the control box 14 performs data transmission with the monitoring background 16 through the communication module 15, the communication module 15 can transmit the operation data of the energy supply system to the monitoring background 16, and the monitoring background 16 can calculate an optimal set value of the system according to the operation data of the system, such as a set threshold value of a pressure difference between a water supply pipeline and a water return pipeline, a set value of a return water temperature of the system, and the like.
The control box 14 of the present embodiment is provided with a controller and a power supply.
The frequency conversion control process of the circulating water pump 1 in the embodiment is as follows:
the actual pressure value of the water supply pipeline and the actual pressure value of the water return pipeline during the operation of the system are monitored through the water supply pressure sensor 5 and the water return pressure sensor 6, the actual pressure difference value of the water supply and return pipeline is calculated, the actual pressure difference value of the water supply and return pipeline is compared with the preset optimal pressure difference value of the water supply and return pipeline, the frequency of the circulating water pump 1 is adjusted according to the comparison result, the rotating speed of the circulating water pump 1 is adjusted, the flow regulation of the water supply and return pipeline is realized, and the pressure difference of the water supply and return pipeline is maintained in the set pressure difference range.
The opening degree control process of the electric bypass valve 7 in the present embodiment is as follows:
the actual pressure value of a water supply pipeline and the actual pressure value of a water return pipeline during system operation are monitored through a water supply pressure sensor 5 and a water return pressure sensor 6, the actual pressure difference value of the water supply and return pipeline is calculated, the actual pressure difference value of the water supply and return pipeline is compared with a preset system maximum safety pressure difference threshold value, when the actual pressure difference value exceeds the set system maximum safety pressure difference threshold value, an opening degree signal of an electric bypass valve is sent to an electric bypass valve actuator 8 through a controller, the opening degree of the bypass valve is adjusted, and the system pressure difference is maintained below the maximum safety pressure difference threshold value through bypassing of certain water flow, so that the safe operation of the system is ensured.
The number of switches of the heat pump unit 2 in this embodiment is controlled as follows:
detecting an actual backwater temperature value when the system operates by a backwater temperature sensor 9 arranged on a backwater pipeline, transmitting the actual backwater temperature value to a controller, comparing the actual backwater temperature value with an optimal system backwater temperature set value, starting timing when the actual backwater temperature value is greater than a set value 1 ℃ (a reference value and can be adjusted according to actual conditions), and starting one heat pump unit 2 if the duration is greater than 10 minutes, and thus, starting the heat pump unit 2 until the heat pump unit 2 is fully started; and when the actual backwater temperature value is less than the set value 1 ℃ (the reference value can be adjusted according to the actual condition), timing is started, if the duration is more than 10 minutes, one heat pump unit 2 is closed, and the machine is not reduced until only one heat pump unit 2 operates. Therefore, the temperature value of the water return pipeline is maintained near the optimal water return temperature set value by starting and stopping the heat pump units 2.
The utility model provides an energy-saving air source heat pump energy supply system of intelligent control's significance lies in, can make the water pump move under the optimum frequency state in air source heat pump system control, the energy consumption of saving the water pump when satisfying user's fan coil 11 water demand, realizes the energy-conserving operation of system; meanwhile, the opening degree of the bypass valve can be controlled, the water flow supply of the system is ensured to be met under the condition without a flowmeter, the safe and efficient operation of the system is ensured, and the cost of control equipment can be greatly saved; meanwhile, the number of switches of the heat pump units 2 can be controlled, and the supply of cold and heat can be automatically regulated according to the change of cold and heat loads of a building, so that the regulation of the cold and heat of the system according to needs is realized. The utility model discloses possess and think about novelty, reasonable in design is reliable, and intelligent degree is high, and indoor thermal environment adjusts effectual, and characteristics such as energy consumption when saving system moves have solved air source heat pump system energy consumption big, energy-saving measure lacks, can't fully satisfy difficult problems such as building energy conservation, consumption reduction's demand effectively.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An energy-saving air source heat pump energy supply system with intelligent control comprises a circulating energy supply pipeline communicated with a user fan coil (11) and a circulating water pump (1), wherein the circulating energy supply pipeline is communicated with a plurality of heat pump units (2) in a parallel connection mode and comprises a water supply pipeline and a water return pipeline, the water supply pipeline is communicated with water outlet pipes of the heat pump units (2), and the water return pipeline is communicated with water inlet pipes of the heat pump units (2); the energy supply system is characterized by further comprising a control box (14) and a data acquisition unit, wherein the control box (14) is respectively electrically connected with the data acquisition unit, the circulating water pump (1) and the heat pump units (2), the data acquisition unit is used for acquiring temperature data and pressure data on a circulating energy supply pipeline, and the control box (14) is used for controlling the working states of the circulating water pump (1) and the heat pump units (2).
2. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, wherein the data collector comprises a water supply temperature sensor (10) and a water return temperature sensor (9) which are connected with a control box (14); the water supply temperature sensor (10) is arranged on the water supply pipeline and used for detecting water temperature data of the water supply pipeline; and the return water temperature sensor (9) is installed on the return water pipeline and used for detecting water temperature data of the return water pipeline.
3. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, wherein the data collector comprises an indoor temperature sensor (13) and an outdoor temperature sensor (12) connected with the control box (14), the indoor temperature sensor (13) is used for detecting the indoor air temperature data of the energy supply area, and the outdoor temperature sensor (12) is used for detecting the outdoor air temperature data of the energy supply area.
4. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, wherein the data collector comprises a water supply pressure sensor (5) and a water return pressure sensor (6) connected with a control box (14); the water supply pressure sensor (5) is arranged on the water supply pipeline and used for detecting water pressure data of the water supply pipeline; and the return water pressure sensor (6) is installed on the return water pipeline and used for detecting the water pressure data of the return water pipeline.
5. The system according to claim 1, wherein an electric switch valve (3) and an electric switch valve actuator (4) are disposed on a branch of the heat pump unit (2) communicating with the circulation energy supply line, and the electric switch valve actuator (4) is connected to the electric switch valve (3) and the heat pump unit (2), respectively.
6. The energy-saving air source heat pump energy supply system with intelligent control as claimed in claim 1, wherein a bypass line is connected between the water supply line and the water return line, the bypass line is provided with an electric bypass valve (7) and an electric bypass valve actuator (8), and the electric bypass valve actuator (8) is respectively connected with the electric bypass valve (7) and the control box (14).
7. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, characterized in that the circulating water pump (1) is a variable frequency water pump.
8. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, wherein each heat pump unit (2) is linked with the circulating water pump (1).
9. An intelligent control energy-saving air source heat pump energy supply system as claimed in claim 1, characterized in that the energy supply system further comprises a communication module (15), and the control box (14) is in data transmission with the monitoring background (16) through the communication module (15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222359923.9U CN218600039U (en) | 2022-09-05 | 2022-09-05 | Energy-saving air source heat pump energy supply system intelligently controlled |
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| CN202222359923.9U CN218600039U (en) | 2022-09-05 | 2022-09-05 | Energy-saving air source heat pump energy supply system intelligently controlled |
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| CN218600039U true CN218600039U (en) | 2023-03-10 |
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| CN202222359923.9U Active CN218600039U (en) | 2022-09-05 | 2022-09-05 | Energy-saving air source heat pump energy supply system intelligently controlled |
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