CN102705961A - Control and realization method of air source heat pump air conditioning system - Google Patents
Control and realization method of air source heat pump air conditioning system Download PDFInfo
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- CN102705961A CN102705961A CN2011100756528A CN201110075652A CN102705961A CN 102705961 A CN102705961 A CN 102705961A CN 2011100756528 A CN2011100756528 A CN 2011100756528A CN 201110075652 A CN201110075652 A CN 201110075652A CN 102705961 A CN102705961 A CN 102705961A
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Abstract
The invention relates to the technical field of heat pump air conditioners, in particular to a control and realization method of an air source heat pump air conditioning system. A main panel is connected with a water tank control panel and at least one group of units controlled by a heat pump control panel. The input end of the water tank control panel is connected with a detection mechanism and the output end of the water tank control panel is connected with an execution mechanism. The structural design is simple and scientific. The air source heat pump air conditioning system is a system which combines a heat pump air conditioner with a heat pump water heater by adopting a heat pump technique and has triple functions of an air conditioner, a heating device and a water heater. The system has the advantages of high efficiency, energy saving, environmental friendliness, zero pollution and zero emission, and is particularly suitable for places such as hotels, schools, hospitals and offices which require for air conditioning and a great amount of hot water. Each heat pump unit can be separately operated. During operation, an auxiliary panel is installed on the heat pump control panel.
Description
Technical field:
The present invention relates to the heat pump air conditioner technical field, refer in particular to a kind of control and implementation method of air-source heat pump air conditioning system.
Background technology:
The heat pump cause of China developed country that relatively lags behind in the world; Starting is also than later; Add the influence of particularity and other factors of China's energy prices; Heat pump is very slow all the time in the application and the development progress of China, and heat pump has been applied to heating, has produced fields such as hot water, drying, entertainment body-building, plantation breed, artificial greenhouse at present;
2. heat pump principle
As shown in Figure 1 is simple heat pump air conditioner typical case's diagram (heat pump operating mode in winter).It is made up of compressor 1A, motor 2A, refrigerant/air heat exchanger 3A, throttle mechanism 4A, refrigerant/water heat exchanger 5A, throttle mechanism 4A, water circulating pump 6A, pipe network 7A, the 8A of air conditioner user system, blow-off system 9A, four-way change-over valve 10A, constant pressure arrangement 11A, water supply tank 12A, small pump 13A; System utilizes fully closed compressor to drive the environmental protection working media, and it is circulated in independent sealed work loop, utilizes the electromagnetism four-way change-over valve to obtain the working mode change of cold energy and heat energy.Press the cooling condition operation summer, promptly the refrigerant/water heat exchanger is as evaporimeter, and the refrigerant/air heat exchanger is as condenser.Heat too high in the absorption chamber is discharged to outdoor going then, plays the effect that indoor temperature is regulated; Press the operation of heat pump operating mode winter; Be the refrigerant/water heat exchanger as condenser, the refrigerant/air heat exchanger is as evaporimeter, and is as shown in Figure 2; When this system moves in the heat pump operating mode; From low level heat energy (air) draw heat Qe, in condenser (refrigerant/water heat exchanger), emit heat Qc=Qe+W through evaporimeter (refrigerant/air heat exchanger), heat Qc is supplied with air-conditioner tail end equipment capable.
Make a general survey of heat pump techniques development both domestic and external and use, we can see that the application of heat pump mainly can be divided into air-conditioning and hot water two general orientation on the market.The air-conditioning aspect refers to that mainly changes in temperature lead to air-conditioning, and the hot water aspect mainly refers to Teat pump boiler.Domestic heat pump product is main with Teat pump boiler at present, and the application of heat pump air conditioner is still less relatively, and is then very few especially the product that both combine.In order fully to appear the advantage of heat pump suddenly, it is necessary combining both, especially in the occasion of extensive heat pump application.Under the attraction of great market, domestic many producers have dropped into the research with heat pump air conditioner and Teat pump boiler combination in succession, have also released some Related products.But as a whole, what this series products was used all is simple RS-232 Control on Communication, and the communication mode scalability is poor, and real-time is not good, and communication stability is not high, can't accomplish large-scale networkedly, more can not accomplish remote control.In addition, the control device of some present products is more single, can not accomplish intellectualized management, and major part all is not do anti-interference and lightning protection measures, and the security reliability of system is not high.
Summary of the invention:
The objective of the invention is deficiency to prior art; And a kind of control and implementation method of air-source heat pump air conditioning system are provided; The simple science of its structural design; Air-source heat pump air conditioning system utilizes heat pump techniques exactly, and heat pump air conditioner is combined with Teat pump boiler and the system with air-conditioning, heating, water heater triple functions that forms.This system has high efficiency, energy-conserving and environment-protective, the advantage of zero pollution, zero-emission.Be specially adapted to hotel, school, hospital, office building etc. and not only needed the place of air-conditioning but also a large amount of hot water of needs.
For realizing above-mentioned purpose, the present invention adopts following technical scheme, and it comprises main panel, subpanel, water tank control panel, heat pump control panel; Main panel is connected with the unit of water tank control panel, at least one group of above heat pump control panel control; Water tank control panel input is connected with testing agency, and water tank control panel output is connected with executing agency, each source pump independent operation; During operation, on the heat pump control panel subpanel is installed.
Described main panel is connected with D.C. regulated power supply module, 485 communication module, keeper's Keyboard Control module, a LCD MODULE respectively by main panel CPU processor, and 485 communication modules are connected with water tank control panel, heat pump control panel respectively.
Described subpanel is made up of subpanel CPU processor, user's Keyboard Control module, serial communication module, No. two LCD MODULEs, power modules respectively; The serial communication module is connected with the unit of heat pump control panel control; Power module is connected with the unit of heat pump control panel control, and is supplied power by the unit of heat pump control panel control.
Described water tank control panel is made up of water tank control CPU processor, D.C. regulated power supply module, No. two communication modules, relay control module, ADC analog-to-digital conversion module, current detection module, water level detecting modules, and No. two 485 communication module is connected with main panel.
Described heat pump control panel is made up of heat pump CPU processor, D.C. regulated power supply module, No. three 485 communication modules, power phase detection module, air-conditioning detection module, relay control module, serial communication module, No. two ADC analog-to-digital conversion modules, pressure control modules; No. three 485 communication module is connected with main panel, and the serial communication module is connected with subpanel.
Beneficial effect of the present invention is: water tank control panel input is connected with testing agency; Water tank control panel output is connected with executing agency, and each source pump independent operation is during operation; On the heat pump control panel subpanel is installed; The simple science of its structural design, air-source heat pump air conditioning system utilizes heat pump techniques exactly, and heat pump air conditioner is combined with Teat pump boiler and the system with air-conditioning, heating, water heater triple functions that forms.This system has high efficiency, energy-conserving and environment-protective, the advantage of zero pollution, zero-emission.
Description of drawings:
Fig. 1 is the structural representation of prior art one;
Fig. 2 is the structural representation of prior art two;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the set structure sketch map of separate unit heat pump control panel control of the present invention;
Fig. 5 is a main panel hardware structure diagram of the present invention;
Fig. 6 is a subpanel structure chart of the present invention;
Fig. 7 is a water tank control panel structure chart of the present invention;
Fig. 8 is a heat pump control panel structure chart of the present invention;
Fig. 9 is a heat pump fundamental diagram of the present invention;
Figure 10 is main panel of the present invention and subpanel programme-control sketch map;
Figure 11 is water tank control panel of the present invention and heat pump control panel sketch map.
The specific embodiment:
See that Fig. 3 is to shown in Figure 11: the present invention includes to realizing above-mentioned purpose, the present invention adopts following technical scheme, and it comprises main panel 1, subpanel 2, water tank control panel 3, heat pump control panel 4; Main panel 1 is connected with the unit of water tank control panel 3, at least one group of above heat pump control panel 4 controls; Water tank control panel 3 inputs are connected with testing agency 6, and water tank control panel 3 outputs are connected with executing agency 5, each source pump independent operation; During operation, subpanel 2 is installed on the heat pump control panel 4.
Described main panel 1 is connected with D.C. regulated power supply module 12, No. one 485 communication module 13, keeper's Keyboard Control module 14, a LCD MODULE 15 respectively by main panel CPU processor 11, and 485 communication modules 13 are connected with water tank control panel 3, heat pump control panel 4 respectively.
Described subpanel 2 is made up of subpanel CPU processor 21, user's Keyboard Control module 22, serial communication module 23, No. two LCD MODULEs 24, power modules 25 respectively; Serial communication module 23 is connected with the unit of heat pump control panel 4 controls; Power module 25 is connected with the unit of heat pump control panel 4 controls, and is supplied power by the unit of heat pump control panel 4 controls.
Described water tank control panel 3 is made up of water tank control CPU processor 31, D.C. regulated power supply module 32, No. two 485 communication modules 33, relay control module 34, ADC analog-to-digital conversion module 35, current detection module 36, a water level detecting module 37, and No. two 485 communication module 33 is connected with main panel 1.
Described heat pump control panel 4 is made up of heat pump CPU processor 41, D.C. regulated power supply module 42, No. three 485 communication modules 43, power phase detection module 44, air-conditioning detection module 45, relay control module 46, serial communication module 47, No. two ADC analog-to-digital conversion modules 48, pressure control modules 49; No. three 485 communication module 43 is connected with main panel 1, and serial communication module 47 is connected with subpanel 2.
The present invention utilizes electronics industry control technology to realize the networking and the Based Intelligent Control of air-source heat pump air conditioning system; Particularly innovate, control the intelligentized while in the realization system and also improved the security and the reliability of system at aspects such as the Control on Communication of system and anti-interference lightning protection; The whole control system mainly contains four parts and forms: main panel 1, subpanel 2, water tank control panel 3 and heat pump control panel 4; Wherein subpanel 2 is optional; If require each source pump can independent operation operation then will select subpanel 2; Otherwise just can not want, this is that solder joint through circuit board determines whether to select in the realization of program.
Be description below about each part function:
Main panel 1 is the management control center of whole system, mainly is responsible for the communication and the coordination of whole system, realizes control and unification to each source pump, and a good man-machine interface is provided, and the real-time clock of whole system is provided.Simultaneously main panel possesses also that the EEPROM data are preserved, anti-power down and unit are made mistakes functions such as warning, shows like Fig. 5.
Subpanel 2 is optional feature boards, can determine whether needs through the program solder joint to different application scenarios.The major function of subpanel 2 is to communicate by letter with the heat pump control panel through simulative serial port, the heat pump control panel is carried out the control and the setting of air conditioning function.Also need be used for simultaneously temperature in the detecting chamber.In addition, subpanel 2 also requires to have good operation-interface, real-time clock, EEPROM data are preserved and prevent function such as power down.Each subpanel all is corresponding to a unique source pump, shows like Fig. 6.
The major function of water tank control panel 3 is that water storage box is carried out the control of water route circulating pump, water compensating valve and water level, current, overcurrent, power phase and hot water temperature etc. are surveyed, and adds thermal control with the hot water circuit that realizes water tank.This is exactly the function control that has been equivalent to realize Teat pump boiler.
Heat pump control panel 4 is used for the separate unit heat pump air conditioner unit of control system, realizes that through the switch that changes each valve the pipeline of refrigerant circulation is different, switches to realize function.Heat pump control panel 4 both can have been realized the control of air conditioning function, also can realize the realization of Teat pump boiler, and can Teat pump boiler and the function of heat pump air conditioner realize simultaneously.The heat pump control panel also is the management component of defrost.The control function of heat pump control panel comprises: control compressor, control outdoor fan, control cross valve commutate, control evaporimeter magnetic valve, condenser magnetic valve, defrost magnetic valve, detect the overcurrent protection switch, detect compressor pressure, detect outer blower fan temperature, determine whether carry out defrost, control the switch of indoor apparatus of air conditioner and determine high, normal, basic air-conditioning wind shelves.In addition, the heat pump control panel also need be surveyed and monitor condensation temperature, delivery temperature, compressor temperature, defrost temperature, refrigerant pressure, power phase etc., to guarantee system safety operation, as showing among Fig. 9.
Top several parts just can be formed a huge control system for heat pump through the network service gang, can reach 32 source pump at most.The structure connection layout of this source pump control system is as shown in Figure 1, and communicating by letter with RS-485 between main panel and water tank control panel and each the heat pump plate is connected, and each independent source pump connected with being connected with simulative serial port of subpanel.
The present invention has adopted a series of interference protection measures; To adapt to abominable electromagnetic environment: 1) in the RS-485 communication module; Adopt high speed photo coupling 6N137 to isolate, and optocoupler TLP527 make communication module be operated in optimum state as the transmission isolation of control signal as the transmission that reads and writes data.Simultaneously; For prevent the RS-485 interface chip receive the impact of static or cause the thunderbolt and damage; Selected chip---75LBC184 antistatic, thunderbolt among the design for use; Its design of Driver becomes limit slope mode to export, and makes the output signal edge can be not steep excessively, effectively suppresses the noise high fdrequency component on the transmission line.And this chip can bear up to the static discharge of 8kV and impact, and has certain lightning protection capability.
2) adopt the kinds of protect device in the native system, comprised resettable fuse PPTC, transient voltage suppressor TVS and piezo-resistance MOV.
PPTC (Polyer Positive Temperature Coefficent) high molecular polymer positive coefficient temperature and resistance; It is the high molecular positive temp thermistor; Mainly formed by polyethylene and conductor (main component is carbon black); Under normal operating temperature, polyethylene is strapped in conductor in the crystalloid structure closely, and forms an anti-conductive path of low group.Because it is low that impedance phase is worked as,, can not change poly crystal structure so the heat energy that electric current produced of the PPTC assembly of flowing through on the circuit is little.Yet when abnormal current takes place, the heat energy that is produced on the conductor just can become glue by crystalloid with polyethylene, and in such cases, the conductor that is bound in just can separate, and causes impedance to improve rapidly and the restriction abnormal current flows through the PPTC assembly.After abnormal current disappeared, conductor path can be combined into Low ESR again once again.This specific character of PPTC can be used to do fuse and use.But there are long characteristics of response time in PPTC as the application of overcurrent protection, therefore is used in combination with instantaneous pressure limiting diode (TVS) usually.When producing moment on the circuit during surge current, the conducting of TVS pipe is guided to the earth to electric current.Yet, if moment surge current excessive, surpass the ability to bear of TVS diode, PPTC just can be before the TVS damage current limliting, thereby protected the safety of system.
Transient voltage suppressor (TVS) is a kind of diode made from special process; When its two poles of the earth receive reverse transient state high energy impact events; It can be with the speed of 10-12s magnitude, and the high impedance of two inter-stages is become Low ESR, absorbs the surge power up to thousands of watts; The voltage clamp that makes two interpolars is in a predetermined value (being generally less than 2 times of rated operational voltages), effectively protects precision components in the electronic circuit to avoid the destruction of various surge pulses.In system, each road power supply output has all been adopted TVS to manage and has been protected power supply to avoid the infringement of lightning surge, in addition, in water level detection circuit, also introduced the TVS pipe.
Piezo-resistance (MOV) is a kind of special resistance that adopts semi-conducting material manufacturing.Piezo-resistance can absorb the energy of glitch and be converted into heat, realizes the clamper function to circuit voltage.In native system, incorporate piezo-resistance at 220V AC power input two ends, stable with the power supply of protection system.
In the system each source pump all is as the subsystem that can work alone, and possesses the heat pump of realization and the required basic function of air-conditioning.The source pump of one platform independent mainly realizes hot-swap feature through three zones: indoor fan, outdoor fan and heat recovery machine.See that from using these three zones can be used as cold-zone or hot-zone again, the cold-zone is the zone that heat pump absorbs heat discharging cold air, and the hot-zone then is the zone of heat pump output high level heat.Indoor fan, outdoor fan and heat recovery machine respectively as cold-zone or hot-zone, and in some way the combination, just can realize the switching of refrigeration mode, heat pump mode, three kinds of mode of operations of air conditioning hot pattern.
Except above-mentioned three kinds main mode of operations, the source pump of native system also comprises a kind of auxiliary mode of operation---defrost pattern.The method that present most of heat pump manufacturer adopts is traditional temperature-time defrosting, promptly every through a regular time at interval, just force source pump to carry out defrost.The very flexible of this method can not be carried out defrost according to the variation of actual environment, and outdoor fan possibly occur does not have frosting; But force to have carried out defrost; And during the outdoor fan frosting, can not carry out defrost at interval because be in defrost again, cause the operating efficiency of system low.In native system, hot gas refrigerant by-pass method is adopted in the realization of defrost.Concrete way is: before the refrigerant of HTHP flows to heat recovery machine through cross valve; From main refrigerant circulating line, utilize the refrigerant of sub-fraction HTHP directly to deliver in the outdoor fan (evaporimeter just) through the defrost bypass duct; Because the refrigerant of this part is not pass through condenser (heat recovery machine), the temperature high pressure can effectively realize the defrost function.When defrost was carried out, system can't carry out the switching of other patterns, therefore need make system between defrost and heat pump work, just obtain dynamic equilibrium through algorithm controls.Therefore introduce the defrost pattern, make system under the lower situation of outdoor environment, still can keep operate as normal.Realize the operate as normal of several kinds of above-mentioned mode of operations and the switching between pattern, will control the duty of the various devices in the system through control chip.But for each device is not simple switch control, also needs certain correlation, and receives following factor affecting: Working mode set, hot water temperature, condensation temperature, delivery temperature, defrost temperature etc.Simultaneously; As a control system that meets industrial standard, not only realize the function switching controls, but also will carry out various safety detection system; Comprise that phase sequence detection, water level detecting, current detection, over-current detection, high pressure detect, low pressure detects; If above various detections detect unusually, system will stopping alarm, with the safe operation of protection hardware.Comprehensive, need controlled device to have in the native system: hot water circulating pump, moisturizing magnetic valve, compressor, outdoor fan, cross valve, condenser magnetic valve, evaporimeter magnetic valve, defrost magnetic valve, the high, normal, basic wind shelves of indoor fan.Its mode of operation such as Fig. 9.
The realization of systems soft ware
It is the software of panel that the software of whole system has one of two part, and another then is the control software of control panel.The software of panel mainly is the driving that realizes communication, the driving of liquid crystal display, the scanning and the custom menu of keyboard.If main panel then also will be realized the pool control of whole system and handle.The software of control panel mainly is exactly driving, temperature acquisition, various safety detection and the relay driving of communication, and workflow diagram such as Figure 11 of each plate show.
The above only is preferred embodiment of the present invention, so all equivalences of doing according to the described structure of patent claim of the present invention, characteristic and principle change or modify, includes in patent claim of the present invention.
Claims (5)
1. the control of an air-source heat pump air conditioning system and implementation method; It comprises main panel (1), subpanel (2), water tank control panel (3), heat pump control panel (4); It is characterized in that: main panel (1) is connected with the unit of water tank control panel (3), at least one group of above heat pump control panel (4) control; Water tank control panel (3) input is connected with testing agency (6), and water tank control panel (3) output is connected with executing agency (5), each source pump independent operation; During operation, heat pump control panel (4) is gone up subpanel (2) is installed.
2. the control of a kind of air-source heat pump air conditioning system according to claim 1 and implementation method; It is characterized in that: described main panel (1) is connected with D.C. regulated power supply module (12), 485 communication modules (13), keeper's Keyboard Control module (14), a LCD MODULE (15) respectively by main panel CPU processor (11), and 485 communication modules (13) are connected with water tank control panel (3), heat pump control panel (4) respectively.
3. the control of a kind of air-source heat pump air conditioning system according to claim 1 and implementation method; It is characterized in that: described subpanel (2) is made up of subpanel CPU processor (21), user's Keyboard Control module (22), serial communication module (23), No. two LCD MODULEs (24), power module (25) respectively; Serial communication module (23) is connected with the unit of heat pump control panel (4) control; Power module (25) is connected with the unit of heat pump control panel (4) control, and is supplied power by the unit of heat pump control panel (4) control.
4. the control of a kind of air-source heat pump air conditioning system according to claim 1 and implementation method; It is characterized in that: described water tank control panel (3) is made up of water tank control CPU processor (31), D.C. regulated power supply module (32), No. two 485 communication modules (33), relay control module (34), an ADC analog-to-digital conversion module (35), current detection module (36), water level detecting module (37), and No. two 485 communication modules (33) are connected with main panel (1).
5. the control of a kind of air-source heat pump air conditioning system according to claim 1 and implementation method; It is characterized in that: described heat pump control panel (4) is made up of heat pump CPU processor (41), D.C. regulated power supply module (42), No. three 485 communication modules (43), power phase detection module (44), air-conditioning detection module (45), relay control module (46), serial communication module (47), No. two ADC analog-to-digital conversion modules (48), pressure control module (49); No. three 485 communication modules (43) are connected with main panel (1), and serial communication module (47) is connected with subpanel (2).
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| CN2011100756528A CN102705961A (en) | 2011-03-28 | 2011-03-28 | Control and realization method of air source heat pump air conditioning system |
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| CN2011100756528A CN102705961A (en) | 2011-03-28 | 2011-03-28 | Control and realization method of air source heat pump air conditioning system |
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| CN201589376U (en) * | 2009-12-31 | 2010-09-22 | 肖安 | Central air-conditioning variable water volume and variable air volume whole group-control energy saving system |
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2011
- 2011-03-28 CN CN2011100756528A patent/CN102705961A/en active Pending
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| JP2006125734A (en) * | 2004-10-28 | 2006-05-18 | Mitsubishi Heavy Ind Ltd | Air conditioning charge calculating device |
| CN201155895Y (en) * | 2008-01-04 | 2008-11-26 | 广州德能热源设备有限公司 | Heat pump hot water units multi-machine centralized remote control system |
| CN101476780A (en) * | 2009-01-09 | 2009-07-08 | 格林斯潘控制技术（上海）有限公司 | Hot water control system with heat source conversion and utilization function |
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Application publication date: 20121003 |