CN102222443B - Educational instrument for refrigerating system of heat pump hot water machine - Google Patents
Educational instrument for refrigerating system of heat pump hot water machine Download PDFInfo
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- CN102222443B CN102222443B CN 201110139789 CN201110139789A CN102222443B CN 102222443 B CN102222443 B CN 102222443B CN 201110139789 CN201110139789 CN 201110139789 CN 201110139789 A CN201110139789 A CN 201110139789A CN 102222443 B CN102222443 B CN 102222443B
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- hot water
- billboard
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- heat pump
- circuit board
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Abstract
The invention discloses an educational instrument for a refrigerating system of a heat pump hot water machine. The educational instrument comprises a host machine, an educational board and an electronic control board, a refrigerating pipeline system and a hot water pipeline system mounted in the host machine, and an electric control system consisting of a host machine parameter inputting device, a circuit board and an executing mechanism and an educational board. A front surface of the educational board is printed with a structure picture and provided with a plurality of electric signal measuring points for detecting electrical device execution mechanisms of the refrigerating pipeline system and the hot water pipeline system. The measuring points are wired at the back of the board and are wired on the execution mechanisms of the corresponding refrigerating pipeline system and the hot water pipeline system. A transform device and a parameter simulation module are arranged on the educational board. By using a one-selection mode, the parameter simulation module or the host machine parameter inputting device of the electric control system is connected to an input port of the circuit board. The front surface of the electronic control board is printed with a wiring diagram and is correspondingly provided with the circuit board and part of electronic elements. A back surface is connected to wires so as to electrically connect the circuit board on the board, the host machine parameter inputting device and the execution mechanism.
Description
Technical field
The present invention relates to the instruments used for education field, more particularly, relate to a kind of educational instrument for refrigerating system of heat pump hot water machine.
Background technology
Heat pump water-heating machine is the air-conditioning equipment that utilizes heat pump techniques, compares combustion gas, electric heating and solar water heater, has that the thermal efficiency is high, energy-conserving and environment-protective, operating cost is low and the plurality of advantages such as safe and reliable, is more and more promoted the use of.But heat pump water-heating machine is as the refrigeration new varieties, also be not familiar with for people, aspect one-piece construction, operational scheme principle, electrical control, engineering construction, especially maintenance, the technical service support of shortage system, the difficulty that makes teaching is increasing, and the student is difficult to system, intactly grasps the refrigeration system course of work of heat pump water-heating machine.
Application number is that 200820080408.4 Chinese utility model patent discloses a kind of refrigeration system demonstration platform for teaching, by condenser, evaporator, compressor and throttling valve by the road UNICOM consist of, wherein condenser and evaporator respectively are more than one, and condenser and evaporator are evaporator and the condenser that transparent material is made at least.Described pipeline is the pipeline that transparent material is made.For safety, install respectively transparent explosive-proof protector chamber additional in evaporator and condenser periphery that transparent material is made.Can make the presentation process of student's clear view refrigeration, can be used for the experimental teaching apparatus of refrigeration principle.But the fundamental purpose of this technical scheme is to be reflected in the process of refrigeration, and the feature of cold-producing medium state variation in system makes the student break away from the understanding abstract to the refrigeration working medium physical change, and it can not be imparted knowledge to students to the system of a complexity and demonstrate.At present, also do not have a kind of instruments used for education heat pump water-heating machine performance study and maintenance skills combined training can be combined as a whole, the Refrigeration Technique, performance follow-up study, the combined training of troubleshooting maintenance skills that makes heat pump water-heating machine is used in teaching and scientific research work in mode intuitively and gets on.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of teaching appliance for the teaching of heat pump water-heating machine refrigeration principle and maintenance skills combined training is provided, can realize series training and the experimental design functions such as the study of direct viewing type operation mechanism, operational factor monitoring, running status indication, real time demonstration, performance follow-up study, the problem that exists to solve above-mentioned prior art.
The technical solution used in the present invention is: a kind of educational instrument for refrigerating system of heat pump hot water machine comprises the main frame for the preparation of hot water, teaching billboard and automatically controlled billboard; Be installed in refrigeration piping system and hot water pipeline system in the main frame, electric-control system, described electric-control system is inputted by host parameter, circuit board and topworks form, the front of described teaching billboard is printed with refrigeration piping system and hot water pipeline system construction drawing, be provided with a plurality of electric signal measurement points for detection of refrigeration piping system unit or electrical equipment topworks of hot water pipeline system in the front of described teaching billboard, described electric signal measurement point is attempted by on the actuating mechanism circuit of corresponding refrigeration piping system or hot water pipeline system by the rear connection at the teaching billboard; At the teaching billboard online true operation and off-line simulation operation conversion equipment and parameter simulation module are set, described conversion equipment selects the host parameter input of described parameter simulation module or electric-control system to connect the input port of described circuit board in the mode of selecting; Wiring diagram and correspondence that the front of described automatically controlled billboard is printed with electric-control system are equipped with circuit board and part electric control element, and the wiring diagram of pressing electric-control system at the back side of automatically controlled billboard connects wire so that the circuit board on the automatically controlled billboard is electrically connected with host parameter input and topworks.
Above-mentioned educational instrument for refrigerating system of heat pump hot water machine also comprises the module of placing obstacles, and the described module of placing obstacles is comprised of electrical equipment topworks, the switch of placing obstacles of connecting with described topworks, and the described switch of placing obstacles comprises closure, disconnects two states.
Above-mentioned educational instrument for refrigerating system of heat pump hot water machine is provided with the Displaying Meter that shows the real-time electric weight of main frame or thermal parameter value at the teaching billboard.
Above-mentioned educational instrument for refrigerating system of heat pump hot water machine, above-mentioned educational instrument for refrigerating system of heat pump hot water machine, described parameter simulation module comprises trimmable resistance, the high-low water level analog switch of analog temperature sensor signal.
Compared with prior art, the present invention has the following advantages:
1) educational instrument for refrigerating system of heat pump hot water machine of type of the present invention has showed that in mode very intuitively the principle of work of refrigeration system and pipeline structure connect, the pipeline structure of hot-water heating system connects and workflow, for engineering technical personnel and after sale service personnel provide good heat pump water-heating machine technological synthesis study and training tool, and can carry out follow-up experiment research to the performance of heat pump water-heating machine.
2) this teaching appliance also can be realized the functions such as online and two kinds of operational mode switchings of emulation, state parameter and electrical quantity demonstration and detection, Load Regulation aperture real time demonstration, fault arrange, the demonstration of teaching appliance signal accurately, fault setting, signal measurement, operation indication all meet every designing requirement, reached heat pump techniques, directly-heated circulation have been carried out the designing requirement of training study, and can researching and analysing performance data.
3) this teaching appliance is simple in structure, principle is directly perceived, is specially adapted to the experimental teaching of carrying out for general students of science and technology.
Description of drawings
Fig. 1 is educational instrument for refrigerating system of heat pump hot water machine connection diagram of the present invention;
Fig. 2 is teaching billboard structure schematic diagram shown in Figure 1;
Fig. 3 is that refrigeration system, the hot water pipeline system of teaching billboard shown in Figure 2 prints schematic diagram;
The automatically controlled billboard that Fig. 4 is connected with teaching billboard shown in Figure 1 is printed schematic diagram.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Such as Fig. 1--shown in the of 4, the main frame 1 of heat pump water-heating machine is connected with educational instrument for refrigerating system of heat pump hot water machine billboard 2, automatically controlled billboard 3.Refrigeration system and hot-water heating system are installed in main frame, and the electric-control system of heat pump water-heating machine is comprised of host parameter input, circuit board and topworks.The driving control of the valve body of each parts of heat-pump hot-water machine cooling system such as compressor, four-way valve and each control refrigerant flow direction is finished by the electric-control system of main frame, and the water pump of the hot-water heating system of heat pump water-heating machine and the driving of each valve body control also are to be finished by the electric-control system of main frame.Type of the present invention refrigeration control system and directly-heated circulation are carried out design of Simulation and printed is printed with refrigeration piping system and hot water pipeline system architecture Figure 11 in the front of teaching billboard 2.Print circuit theory diagrams and the automatically controlled mechanism figure of main frame at automatically controlled billboard 3.Be provided with the demonstration of air conditioner heating power parameter acquisition, electricity consumption situation collection demonstration at teaching billboard 2, favor me with your advice and learn the parameter instrumentation district 12 of billboard.Comprise reometer, voltage table, the tensimeter that shows the cold-producing medium high-low pressure shows the refrigerant heating tube thermometer of refrigerant temperature situation, the leaving water temperature table that shows hot-water heating system, water tank temperature table, the coil temperature table that shows fin type heat exchanger, outdoor environment temperature table etc. when defrost state.Such as Fig. 4, printed circuit board 31 and transformer on the front of automatically controlled billboard 3, blower fan electric capacity, relay, the connection wiring diagram of the electric control elements such as A.C. contactor, and on corresponding position mounting circuit boards 31, at the electric control element installing zone 32 interior corresponding corresponding electric control elements of installing, on the right side of billboard oscillograph 33 is set, oscillographic below arranges electrical equipment topworks status display area 34, compressor A is housed in this zone, compressor B, blower fan, water pump, warm water valve, electric heater, a plurality of solenoid valves, the duty display lamp of the critical components such as four-way valve makes the real-time running state of each parts very clear.
Such as Fig. 2, right side at the teaching billboard is provided with the module 13 of placing obstacles, the topworks that the module of placing obstacles 13 is placed obstacles by a plurality of experiments and the switch of placing obstacles that is connected with topworks are formed, place obstacles switch under normal conditions the closed circuit of topworks that makes connect, under the state of placing obstacles, manually open, the circuit that connects this topworks that places obstacles is broken down, the phenomenon of fault artificially is set.The topworks that places obstacles has: a plurality of solenoid valves, four-way valve, high voltage protective switch, low-voltage protective switch, delivery temperature protection switch, warm water valve switch, water flow switch, water tank anti-overflow protection switch, intake pressure protector switch, pump switch, water level switch etc. in the system.
In order to demonstrate the host work state under the different operating modes when giving lessons, the present invention has designed emulation mechanism demo function module, can realize on-line execute and simulation run conversion.Right side at the teaching billboard is provided with conversion equipment 15, parameter simulation module 14, the state variation of the parameter simulation module 14 a plurality of temperature of simulation or switching signal is also given circuit board on the automatically controlled billboard 3 with analog signal transmission, sends output order after the circuit board deal with data.Analog parameter be provided with refrigerant heating tube temperature, leaving water temperature sensor, outdoor environment temperature sensor, heat exchange coil temperature sensor, water tank temperature sensor, high water stage switch, low-water level switch etc.When one group of switch of conversion equipment is connected mimotope, each simulating signal in the parameter simulation module 14 then replaces the real-time parameter input on the main frame to connect circuit board, as replace the input port of the refrigerant heating tube temperature sensor connecting circuit board on main frame with the refrigerant heating tube temperature of parameter simulation module.Under the analog operation state, the output port of each topworks's duty display lamp connecting circuit board of automatically controlled billboard, the circuit board Analog signals is also exported control signal to each topworks's duty display lamp, is illustrated under the emulation mode duty of topworks by display lamp.
The present invention has inserted all kinds of operation valve indications and signal measurement point in flow process control, makes the student be learnt intuitively whole system.Referring to Fig. 2, also be provided with a plurality of electric signal measurement points 16 on the printing diagram of teaching billboard 2, electric signal measurement point is attempted by on the circuit of corresponding refrigeration piping system unit or hot water pipeline system unit by the rear connection at the teaching billboard, at can try to locate by following up a clue on the billboard magnitude of voltage of measuring system parts of teaching, provide very big help to the course of work and the experimental study of students material object.
As shown in Figure 3, heat pump water-heating machine of the present invention is when water heating, and the course of work of refrigeration system is such: compressor air-discharging → four-way valve ST1 → plate type heat exchanger (condenser) → restriction device → coolant solo valve → fin type heat exchanger (evaporator) → four-way valve ST1 → vapour liquid separator → compressor; When system defrosted, four-way valve powered on, and refrigerant flow direction is: compressor air-discharging → four-way valve ST1 → fin type heat exchanger (evaporator) → solenoid valve SV1 → restriction device → electric heating tube → vapour liquid separator → compressor.When flowing through four-way valve 22 arrival plate type heat exchanger 24 by compressor 21 compression refrigerant gas, carry out the heating power exchange at plate type heat exchanger inner refrigerant and recirculated water, flow to again fin type heat exchanger 23 through retaining valve after the throttling and carry out entering gas-liquid separator through four-way valve 22 again after the heating power exchange and get back to compressor, finish the work of heat-pump hot-water machine cooling system.When refrigeration pipe system defrosts, the compressor compresses refrigerant gas flows through four-way valve, this moment, four-way valve commutated to the defrosting duty, the refrigerant gas of High Temperature High Pressure directly enters the fin type heat exchanger with frost layer, make the thawing of being heated of the frost layer of heat exchanger surface, then get back to compressor through electric heating tube after the cold-producing medium throttling, defrosting work is finished.Moving towards of heat pump water-heating machine hot-water heating system is as follows: at plate type heat exchanger 24 and 25 settings of water-storing tank pipeline of leaking water, have respectively the two-way inlet pipeline to be connected with plate type heat exchanger, come from the cold water water inlet, come from water-storing tank.When cold water through automatic exhaust steam valve, intake pressure protector; pass through again solenoid valve SV2; arrive again solenoid valve SV3 and warm water valve (when coolant-temperature gage is too high; the a part of water yield of solenoid valve SV3 work shunting makes the temperature of setting reach suitable scope) enter plate type heat exchanger and cold-producing medium carries out heat interchange; the cold water water temperature raises, and pipeline enters water-storing tank from leaking water.When water temperature in the water-storing tank does not reach the temperature range of regulation, be connected to the water pump energising work between water tank and the plate type heat exchanger, valve on the pipeline is opened, stream of warm water in the water tank is crossed away water one-way valve and is entered water pump, flow into the plate type heat exchanger heat exchange through water flow switch solenoid valve SV4 again, warm water and cold-producing medium carry out heat interchange in plate type heat exchanger, and the temperature of warm water is raise again, get back to the water-storing tank from the pipeline of leaking water and go.
The present invention is directed to the teaching of refrigeration system and the hot-water heating system principle of heat pump water-heating machine, route map by design and printing system structure and pipeline trend, make the trend of student's visual understanding refrigeration work state, water heating flow process and defrosting duty, understand refrigeration work state and defrosting duty pipeline traffic direction, and the cooling module of process.Thereby allow the student read by study practice voluntarily and judge, cultivate student's manipulative ability, promote technical ability, be familiar with device structure, principle of work and the electric control principle of Teat pump boiler piping system and hot water pipeline system carried out deep research.Teaching appliance of the present invention can carry out simulation operations, Long-distance Control at billboard and truly move two kinds of patterns.And realize system synthesis study, training and the experimental design functions such as running status indication, signal measurement, fault setting, signals collecting and real time demonstration, Performance figure.Powerful, practical.
Claims (4)
1. an educational instrument for refrigerating system of heat pump hot water machine comprises the main frame (1) for the preparation of hot water, teaching billboard (2) and automatically controlled billboard (3); Be installed in refrigeration piping system and hot water pipeline system in the main frame, electric-control system, described electric-control system is inputted by host parameter, circuit board (31) and topworks form, it is characterized in that: the front of described teaching billboard (2) is printed with refrigeration piping system and hot water pipeline system construction drawing (11), be provided with a plurality of electric signal measurement points (16) for detection of refrigeration piping system unit or electrical equipment topworks of hot water pipeline system in the front of described teaching billboard (2), described electric signal measurement point is attempted by on the actuating mechanism circuit of corresponding refrigeration piping system or hot water pipeline system by the rear connection at the teaching billboard; At teaching billboard (2) online true operation and off-line simulation operation conversion equipment (15) and parameter simulation module (14) are set, described conversion equipment selects the host parameter input of described parameter simulation module or electric-control system to connect the input port of described circuit board (31) in the mode of selecting; Wiring diagram and correspondence that the front of described automatically controlled billboard is printed with electric-control system are equipped with circuit board (31) and part electric control element, and the wiring diagram of pressing electric-control system at the back side of automatically controlled billboard connects wire so that the circuit board on the automatically controlled billboard is electrically connected with host parameter input and topworks.
2. educational instrument for refrigerating system of heat pump hot water machine according to claim 1, it is characterized in that: also comprise the module of placing obstacles (13), the described module of placing obstacles (13) is comprised of electrical equipment topworks, the switch of placing obstacles of connecting with described topworks, is closed under the described switch normal condition of placing obstacles.
3. educational instrument for refrigerating system of heat pump hot water machine according to claim 2 is characterized in that: be provided with the Displaying Meter that shows the real-time electric weight of main frame or thermal parameter value at teaching billboard (2).
4. educational instrument for refrigerating system of heat pump hot water machine according to claim 3, it is characterized in that: described parameter simulation module (14) comprises trimmable resistance, the high-low water level analog switch of simulating each temperature sensor signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110139789 CN102222443B (en) | 2011-05-27 | 2011-05-27 | Educational instrument for refrigerating system of heat pump hot water machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110139789 CN102222443B (en) | 2011-05-27 | 2011-05-27 | Educational instrument for refrigerating system of heat pump hot water machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102222443A CN102222443A (en) | 2011-10-19 |
| CN102222443B true CN102222443B (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110139789 Expired - Fee Related CN102222443B (en) | 2011-05-27 | 2011-05-27 | Educational instrument for refrigerating system of heat pump hot water machine |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438194Y (en) * | 2000-05-19 | 2001-07-04 | 陈继权 | Air conditioner teaching demonstrating table |
| CN201207246Y (en) * | 2008-05-16 | 2009-03-11 | 淄博职业学院 | Air-conditioner training device |
| CN201255953Y (en) * | 2008-05-06 | 2009-06-10 | 申京生 | Refrigeration system demonstration platform for teaching |
-
2011
- 2011-05-27 CN CN 201110139789 patent/CN102222443B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2438194Y (en) * | 2000-05-19 | 2001-07-04 | 陈继权 | Air conditioner teaching demonstrating table |
| CN201255953Y (en) * | 2008-05-06 | 2009-06-10 | 申京生 | Refrigeration system demonstration platform for teaching |
| CN201207246Y (en) * | 2008-05-16 | 2009-03-11 | 淄博职业学院 | Air-conditioner training device |
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| Publication number | Publication date |
|---|---|
| CN102222443A (en) | 2011-10-19 |
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