CN107726659B - Air source heat pump/solar heat pump system installation and debugging practical training assessment device - Google Patents
Air source heat pump/solar heat pump system installation and debugging practical training assessment device Download PDFInfo
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- CN107726659B CN107726659B CN201710886794.XA CN201710886794A CN107726659B CN 107726659 B CN107726659 B CN 107726659B CN 201710886794 A CN201710886794 A CN 201710886794A CN 107726659 B CN107726659 B CN 107726659B
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- 238000012549 training Methods 0.000 title claims abstract description 31
- 238000009434 installation Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 242
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 239000008400 supply water Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 32
- 238000004146 energy storage Methods 0.000 claims description 27
- 238000004378 air conditioning Methods 0.000 claims description 19
- 239000003507 refrigerant Substances 0.000 claims description 14
- 238000005485 electric heating Methods 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 description 12
- 239000010865 sewage Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000008236 heating water Substances 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 206010063385 Intellectualisation Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
Abstract
The invention discloses an air source heat pump/solar heat pump system installation and debugging practical training assessment device. The air source heat pump/solar heat pump system installation and debugging practical training assessment device comprises an automatic control system, a refrigerating and heating system, a cold and hot water system, an air conditioner controller, an indoor fan coil and a water supply system, wherein the air conditioner controller is connected with the indoor fan coil; the water supply system can supply water to the refrigerating and heating system through the cold and hot water system; the refrigerating and heating system, the cold and hot water system, the air conditioner controller and the water supply system are all connected with an automatic control system, and the automatic control system is provided with a network module; the refrigerating and heating system is connected with the cold and hot water system, and the cold and hot water system is connected with the indoor fan coil. The invention has low cost, so that a student can repeatedly assemble and disassemble the practical training on the practical training examination device without carrying out practical training operation on an industrial site, thereby improving the understanding and the practical ability of the student.
Description
Technical Field
The invention relates to the technical field of teaching equipment, in particular to an air source heat pump/solar heat pump system installation and debugging practical training and checking device.
Background
In order to promote relevant professional construction and course reform of university and college school, the demonstration experiment of being convenient for makes more people can better know air source heat pump/solar heat pump system, cultivates the development needs of more air source heat pump/solar heat pump system trades, and the research and development of air source heat pump/solar heat pump system teaching research device becomes more important.
Disclosure of Invention
The invention aims to provide an air source heat pump/solar heat pump system installation and debugging practical training assessment device convenient for teaching, which can solve one or more of the problems in the prior art.
According to one aspect of the invention, an air source heat pump/solar heat pump system installation and debugging practical training assessment device is provided, which comprises an automatic control system, a refrigerating and heating system, a cold and hot water system, an air conditioner controller, an indoor fan coil and a water supply system, wherein the air conditioner controller is connected with the indoor fan coil;
the water supply system can supply water to the refrigerating and heating system through the cold and hot water system;
the refrigerating and heating system, the cold and hot water system, the air conditioner controller and the water supply system are all connected with an automatic control system, and the automatic control system is provided with a network module;
the refrigerating and heating system is connected with the cold and hot water system, and the cold and hot water system is connected with the indoor fan coil.
The invention has the beneficial effects that: according to the invention, an air source heat pump/solar heat pump system is simulated, an automatic control system, a refrigerating and heating system, a cold and hot water system, an air conditioner controller and an indoor fan coil are concentrated on one operation table, the refrigerating and heating system is controlled by the automatic control system to generate cold water/hot water, then the cold and hot water is conveyed to the indoor fan coil through the cold and hot water system, and cold air/hot air is blown out through the control of the air conditioner controller. In addition, the automatic control system is provided with a network module, so that the running state of the whole device can be controlled through a network, and the design and the writing of network control software are completed. The fault setting and checking can be carried out through the network, so that training and checking of students are greatly facilitated.
In some embodiments, the refrigeration and heating system includes a compressor, a gas-liquid separator, an air conditioning floor heating heat exchanger, an outdoor heat exchanger/solar collector, a four-way valve, a throttle expansion valve, a one-way valve bank, an economizer, a liquid storage tank, and a dry filter;
the compressor is provided with a compressor outlet and a compressor inlet, the compressor outlet is communicated with a first interface of a four-way valve through a pipeline, a second interface of the four-way valve is connected with an outdoor heat exchanger/solar heat collector through a pipeline, a third interface of the four-way valve is connected with the compressor inlet through a gas-liquid separator, and a fourth interface of the four-way valve is communicated with the first interface of the one-way valve group through an air-conditioning floor heating heat exchanger;
the first interface of the one-way valve group is communicated with the second interface of the one-way valve group through a liquid storage tank, an economizer, a drying filter and a throttle expansion valve which are sequentially communicated through pipelines, and the second interface of the one-way valve group is connected with the outdoor heat exchanger/solar heat collector through pipelines;
the second interface of the four-way valve is communicated with the third interface of the one-way valve group through an outdoor heat exchanger/solar heat collector, and the third interface of the one-way valve group is connected with the liquid storage tank through a pipeline;
the throttling expansion valve is connected with the air conditioner floor heating heat exchanger through a fourth interface of the one-way valve group.
Thus, during heating, the flow of the refrigerant is as follows: compressor exhaust port, first interface of four-way valve, fourth interface of four-way valve, air conditioner floor heating heat exchanger, first interface of one-way valve set, liquid storage tank, economizer, dry filter, throttle expansion valve, outdoor heat exchanger/solar collector, second interface of four-way valve, third interface of four-way valve, gas-liquid separator and compressor inlet. During refrigeration, the flow of the refrigerant is as follows: compressor outlet, first interface of four-way valve, outdoor heat exchanger/solar collector, third interface of one-way valve set, liquid storage tank, economizer, dry filter, throttle expansion valve, fourth interface of one-way valve set, air conditioner floor heating heat exchanger, fourth interface of four-way valve, third interface of four-way valve, gas-liquid separator and compressor inlet.
In some embodiments, an enthalpy-increasing interface is further provided on the compressor, an enthalpy-increasing expansion valve is connected in parallel to a communication pipeline between the economizer and the dry filter, a portion of the refrigerant passing through the dry filter flows through the pipeline to the throttle expansion valve, and another portion of the refrigerant passing through the dry filter flows through the economizer through the enthalpy-increasing expansion valve and finally flows into the compressor through the pipeline via the enthalpy-increasing interface. Therefore, at ultralow temperature or ultrahigh temperature, the liquid refrigerant is stabilized in an expansion refrigeration mode, so that the capacity and efficiency of the compressor are improved, and the service life of the compressor is prolonged.
In some embodiments, the throttling expansion valve and the enthalpy increasing expansion valve are both electronic expansion valves. Because the electronic expansion valve has excellent characteristics incomparable with the thermal expansion valve, the electronic expansion valve is favorable for realizing automation and intellectualization by adopting the electronic expansion valve, and is convenient for teaching and practical training operation.
In some embodiments, a liquid viewing mirror is arranged on a pipeline communicated with the throttling expansion valve and the second port of the one-way valve group. Thus, by providing the liquid-viewing mirror, whether the refrigerant is in a gaseous state or in a liquid state can be checked, and thus the operability and the adjustability of the present invention can be improved.
In some embodiments, the cold and hot water system comprises a water inlet and a water outlet, one end of the water inlet can be connected with an air conditioner water return port of the air conditioner floor heating heat exchanger through a circulating pump, and one end of the water outlet can be connected with an air conditioner water outlet of the air conditioner floor heating heat exchanger through a pipeline; the water supply system can supply water to the refrigerating and heating system through the water inlet, and the other end of the water outlet is connected with the indoor fan coil through a pipeline. Therefore, cold water/hot water is transmitted to the indoor fan coil through the water outlet of the cold water heating system so as to realize refrigeration/heating, and meanwhile, water can be supplied to the air conditioner floor heating heat exchanger through the water inlet of the cold water heating system.
In some embodiments, the indoor fan coil is connected to the energy storage water tank by a pipe, and the water supply system is connected to the water inlet of the cold and hot water system by the energy storage water tank. Therefore, the effect of buffering cold water/hot water can be achieved by arranging the energy storage water tank, so that when the compressor is stopped, cold water/hot water can be provided for the indoor fan coil through the energy storage water tank, and the effect of short-time refrigeration/heating can be achieved.
In some embodiments, the energy storage water tank is connected with the water inlet of the cold and hot water system through an expansion water tank, a circulating water pump, a one-way valve and a filter which are sequentially communicated through pipelines. Therefore, the use effect of the invention can be further improved, the operation is convenient, and the water quality can be filtered by arranging the filter, so that the service life of the invention can be prolonged.
In some embodiments, the water outlet of the cold and hot water system is connected with the indoor fan coil through a water pressure meter, a first hand valve, a second hand valve, a first water flow switch and a third hand valve which are sequentially communicated through pipelines, a gate valve is arranged on the pipeline which is communicated with the water pressure meter and the first hand valve, the gate valve is connected with a sewage drain pipe through a pipeline, a fourth hand valve and a fifth hand valve are connected in parallel at two ends of the second hand valve through pipelines, an electric heating boiler is arranged between the fourth hand valve and the fifth hand valve, and a sixth hand valve is connected between the indoor fan coil and the energy storage water tank. Therefore, the design can improve the stability of the sewage treatment device, and sewage generated in the device can be timely discharged by arranging the gate valve communicated with the sewage discharge pipe, so that the service life of the sewage treatment device can be prolonged.
In some embodiments, the water supply system is connected to the energy storage water tank through a pressure reducing valve, an automatic water supplementing valve and a second water flow switch which are sequentially communicated through pipelines, a water draining valve is arranged on the pipeline, which is connected with the energy storage water tank, of the automatic water supplementing valve, and the water draining valve is connected with the water draining pipe through a pipeline. Therefore, by arranging the automatic water supplementing valve, the automation of the invention can be improved, and the safety performance of the invention can be enhanced.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an air source heat pump/solar heat pump system installation and debugging training and checking device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a cooling and heating system in the air source heat pump/solar heat pump system installation and debugging training and checking device shown in FIG. 1;
FIG. 3 is a schematic diagram of a hot and cold water system in the air source heat pump/solar heat pump system installation and debugging training and checking device shown in FIG. 1;
fig. 4 is a schematic structural diagram of a water return system in the air source heat pump/solar heat pump system installation and debugging training and checking device shown in fig. 1.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Fig. 1 to 4 schematically show an air source heat pump/solar heat pump system installation and commissioning training assessment device according to an embodiment of the present invention. As shown in the figure, the device comprises an automatic control system 1, a refrigerating and heating system 2, a cold and hot water system 3, an air conditioner controller 4, an indoor fan coil 5 and a water supply system 6, wherein the air conditioner controller 4 is connected with the indoor fan coil 5.
Wherein, water supply system 6 can supply water to refrigeration heating system 2 through cold and hot water system 3, and refrigeration heating system 2 links to each other with cold and hot water system 3, and cold and hot water system 3 links to each other with indoor fan coil 5, and refrigeration heating system 2, cold and hot water system 3, air conditioner controller 4 and water supply system 6 all link to each other with automatic control system 1, are equipped with network module 7 on the automatic control system 1. According to the invention, by simulating an air source heat pump/solar heat pump system, an automatic control system 1, a refrigerating and heating system 2, a cold and hot water system 3, an air conditioner controller 4, a water supply system 6 and an indoor fan coil 5 are concentrated on one operation table, the refrigerating and heating system 2 is controlled by the automatic control system 1 to generate cold water/hot water, then the cold water/hot water is conveyed to the indoor fan coil 5 through the cold and hot water system 3 and the cold water/hot air is blown out through the control of the air conditioner controller 4, and the air source heat pump/solar heat pump system has the advantage of low cost, so that a student does not need to perform practical training operation on an industrial site, and can repeatedly disassemble and assemble practical training on the practical training assessment device, thereby improving understanding and manual capability of the student. In addition, the automatic control system 1 is provided with the network module 7, so that the running state of the whole device can be controlled through a network, and the design and the writing of network control software can be completed. The fault setting and checking can be carried out through the network, so that training and checking of students are greatly facilitated. .
To improve the operability and safety of the present invention, the automatic control system 1 may include a control motherboard, a touch screen, an ac contactor, a thermal overload protector, a current transformer, a voltmeter, and a compressor capacitor.
The refrigeration and heating system 2 may include a compressor 21, a gas-liquid separator 22, an air conditioning floor heating heat exchanger 23, an outdoor heat exchanger/solar collector 24, a four-way valve 25, a throttle expansion valve 26, a check valve group 27, an economizer 28, a liquid tank 29, and a dry filter 210; the compressor 21 is provided with a compressor outlet 2101 and a compressor inlet 2102, the compressor outlet 2101 is communicated with a first interface of the four-way valve 25 through a pipeline, a second interface of the four-way valve 25 is connected with the outdoor heat exchanger/solar heat collector 24 through a pipeline, a third interface of the four-way valve 25 is connected with the compressor inlet 2102 through a gas-liquid separator 22, and a fourth interface of the four-way valve 25 is communicated with a first interface of the one-way valve group 27 through an air-conditioning floor heating heat exchanger 23; the first interface of the check valve group 27 is communicated with the second interface of the check valve group 27 through a liquid storage tank 29, an economizer 28, a drying filter 210 and a throttle expansion valve 26 which are sequentially communicated by pipelines, and the second interface of the check valve group 27 is connected with the outdoor heat exchanger/solar heat collector 24 through pipelines; the second port of the four-way valve 25 is communicated with the third port of the one-way valve group 27 through the outdoor heat exchanger/solar heat collector 24, and the third port of the one-way valve group 27 is connected with the liquid storage tank 29 through a pipeline; the throttle expansion valve 26 is connected with the air-conditioning floor heating heat exchanger 23 through a fourth interface of the check valve group 27.
Thus, during heating, the flow of the refrigerant is as follows: the method comprises the steps of exhaust port of a compressor 21, first interface of a four-way valve 25, fourth interface of the four-way valve 25, air-conditioning floor heating heat exchanger 23, first interface of a one-way valve set 27, liquid storage tank 29, economizer 28, dry filter 210, throttle expansion valve 26, outdoor heat exchanger/solar heat collector 24, second interface of the four-way valve 25, third interface of the four-way valve 25, gas-liquid separator 22 and compressor inlet 2102. During refrigeration, the flow of the refrigerant is as follows: compressor outlet 2101, first interface of four-way valve 25, second interface of four-way valve 25, outdoor heat exchanger/solar collector 24, third interface of one-way valve set 27, liquid storage tank 29, economizer 28, dry filter 210, throttle expansion valve 26, fourth interface of one-way valve set 27, air conditioning floor heating heat exchanger 23, fourth interface of four-way valve 25, third interface of four-way valve 25, gas-liquid separator 22, and compressor inlet 2102.
Further, the compressor 21 is further provided with an enthalpy increasing port 2103, an enthalpy increasing expansion valve 211 is connected in parallel to a communication pipeline between the economizer 28 and the filter drier 210, a part of the refrigerant passing through the filter drier 210 flows to the throttle expansion valve 26 through the pipeline, and another part of the refrigerant passing through the filter drier 210 flows through the economizer 28 through the enthalpy increasing expansion valve 211 and finally flows into the compressor 21 through the enthalpy increasing port 2103 through the pipeline. Therefore, at ultra-low temperature or ultra-high temperature, the liquid refrigerant is stabilized by means of expansion refrigeration, so that the capacity and efficiency of the compressor 21 are improved, and the service life of the compressor 21 is prolonged.
The throttle expansion valve 26 and the enthalpy-increasing expansion valve 211 are preferably electronic expansion valves. Because the electronic expansion valve has excellent characteristics incomparable with the thermal expansion valve, the electronic expansion valve is favorable for realizing automation and intellectualization by adopting the electronic expansion valve, and is convenient for teaching and practical training operation.
In order to improve the reliability of the present invention, a liquid-viewing mirror 212 is disposed on the pipeline where the throttle expansion valve 26 and the second port of the check valve set 27 are communicated. Thus, by providing the liquid mirror 212, whether the refrigerant is in a gaseous state or in a liquid state can be checked, and thus the operability and the adjustability of the present invention can be improved.
In order to improve the safety performance of the invention, the air conditioner floor heating heat exchanger 23 can be connected with an anti-freezing switch 2303 through a pipeline.
As one preferable mode, the cold and hot water system 3 comprises a water inlet 3101 and a water outlet 3102, wherein one end of the water inlet 3101 can be connected with an air-conditioning water return port 2301 of the air-conditioning floor heating heat exchanger 23 through a circulating pump 32, and one end of the water outlet 3102 can be connected with an air-conditioning water outlet 2302 of the air-conditioning floor heating heat exchanger 23 through a pipeline; the water supply system 6 can supply water to the refrigerating and heating system 2 through the water inlet 3101, and the other end of the water outlet 3102 is connected with the indoor fan coil 5 through a pipeline. Thereby, cold water/hot water is transferred to the indoor fan coil 5 through the water outlet 3102 of the cold and hot water system 3 to achieve cooling/heating, and water can be supplied to the air conditioner floor heating heat exchanger 23 through the water inlet 3101 of the cold and hot water system 3.
Further, the indoor fan coil 5 is connected with the energy storage water tank 33 through a pipeline, and the water supply system 6 is connected with the water inlet 3101 of the cold and hot water system 3 through the energy storage water tank 33. Therefore, by arranging the energy storage water tank 33, when the condition of refrigerating and heating is met, the redundant cold water/hot water in the indoor fan coil 5 can be stored in the energy storage water tank 33, and the effect of caching the cold water/hot water can be achieved, so that when the compressor 21 is stopped, the cold water/hot water is provided for the indoor fan coil 5 through the energy storage water tank 33, the effect of refrigerating and heating for a short time is achieved, the indoor temperature is kept after the compressor 21 is stopped, and the indoor temperature is not greatly changed in a short time.
In order to improve the use environment of the device when the device is used, the device also comprises a water return system 8, the water return system 8 is used for collecting real-training water leakage and filtering the water back to the water supply system 6, the water return system 8 comprises a water collecting water tank 81, and the water collecting water tank 81 is connected with the water supply system 6 through a water return filter 82, a water return one-way valve 83 and a water return circulating water pump 84 which are sequentially communicated through pipelines. Thus, by providing the water return system 8, recovery of leakage water generated during water supply or pressure test can be facilitated.
The energy storage water tank 33 may be connected to the water inlet 3101 of the cold and hot water system 3 through an expansion water tank 34, a circulating water pump 35, a check valve 36 and a filter 37 which are sequentially communicated by pipes. Thus, the use effect of the present invention can be further improved, the operation is facilitated, and the water quality can be filtered by providing the filter 37, so that the service life of the present invention can be prolonged.
The water outlet 3102 of the hot and cold water system 3 can be connected with the indoor fan coil 5 through a water pressure gauge 312, a first hand valve 313, a second hand valve 314, a first water flow switch 315 and a third hand valve 316 which are sequentially communicated through pipelines, a gate valve 317 is arranged on the pipeline which is communicated with the water collecting tank 81 through a blow-down pipe 318, the two ends of the second hand valve 314 are connected with a fourth hand valve 319 and a fifth hand valve 320 in parallel through pipelines, an electric heating boiler 321 is arranged between the fourth hand valve 319 and the fifth hand valve 320, a safety valve 327 is arranged on the pipeline which is communicated between the first water flow switch 315 and the third hand valve 316, the safety valve 327 is connected with the water collecting tank 81 through a sewer pipe, a sixth hand valve 322 is connected between the indoor fan coil 5 and the energy storage water tank 33, and a seventh hand valve 223 is arranged on the pipeline which is communicated with the enthalpy increasing expansion valve 211 and the drying filter 210. Therefore, the design can improve the stability of the invention, sewage generated in the device can be timely discharged through the gate valve 317 communicated with the drain pipe 318, and the sewage is recovered and filtered through the water return system 8 and then returned to the water supply system 6, so that a water source can be saved, and the use environment of the invention is improved.
The water supply system 6 can be connected with the energy storage water tank 33 through a pressure reducing valve 38, an automatic water supplementing valve 39 and a second water flow switch 338 which are sequentially communicated through pipelines, a water draining valve 310 is arranged on the pipeline connecting the automatic water supplementing valve 39 with the energy storage water tank 33, and the water draining valve 310 is connected with the water collecting water tank 81 through a water draining pipe 311. By providing the automatic water replenishment valve 39, the automation of the present invention can be improved, and the safety performance of the present invention can be enhanced.
The invention can use a plurality of air conditioners at the same time, an air conditioner water separator 328 can be arranged on a pipeline for communicating the indoor fan coils 5 with the water outlet 3102 of the cold and hot water system 3, a plurality of eighth hand valves 329 are connected on the air conditioner water separator 328, and each indoor fan coil 5 can be connected with one of the eighth hand valves 329 through the pipeline, thereby providing cold water/hot water for a plurality of air conditioners through the cold and hot water system 3. Meanwhile, an air conditioner water collector 330 can be arranged between the energy storage water tank 33 and the indoor fan coils 5, a plurality of ninth hand valves 331 are connected to the air conditioner water collector 330, each indoor fan coil 5 can be connected with one of the ninth hand valves 331 through a pipeline, and therefore redundant cold water/hot water in each indoor fan coil 5 can be transmitted to the energy storage water tank 33 through the air conditioner water collector 330 for storage.
In order to further improve the operability of the present invention, a first thermocouple 324 may be provided on a pipeline in which the water outlet 3102 of the hot and cold water system 3 communicates with the indoor fan coil 5, a second thermocouple 325 may be provided on a pipeline in which the filter 37 communicates with the check valve 36, a fourth thermocouple 213 may be provided on the outdoor heat exchanger/solar collector 24, a fifth thermocouple 214 may be provided on a pipeline in which the gas-liquid separator 22 communicates with the third port of the four-way valve 25, a sixth thermocouple 217 may be provided on a pipeline in which the throttle expansion valve 26 communicates with the second port of the check valve 27, and a seventh thermocouple 218 may be provided on a pipeline in which the compressor 21 communicates with the first port of the four-way valve 25. Therefore, the temperature of different parts can be measured by arranging a plurality of thermocouples, so that the assessment and practical training of students can be facilitated.
In order to further improve the safety performance of the invention in the use process, a first pressure switch 219 and a first pressure gauge 220 are arranged on a pipeline of the gas-liquid separator 22 communicated with a third port of the four-way valve 25, a second pressure switch 221 and a second pressure gauge 222 are arranged on a pipeline of the compressor 21 communicated with the first port of the four-way valve 25, and a third pressure gauge 326 is arranged on a pipeline of the expansion water tank 34 communicated with the circulating water pump 35.
In the air source heat pump/solar heat pump system installation and debugging practical training examination device provided by the invention, all pipeline connections are connected by adopting the threaded ports, so that the disassembly and connection of components are convenient.
The present invention can also be used with domestic hot water assemblies, the domestic hot water heat exchanger 224 being connected in series between the compressor outlet 2101 and the first interface of the four-way valve 25. The invention can also be used with a floor heating assembly, and the electric heating coil/radiator 332 can be connected with the water outlet 3102 of the cold and hot water system 3 through a pipeline. The invention can heat a plurality of floor heating components at the same time, a floor heating water separator 333 can be arranged on a pipeline connected with the water outlet 3102 of the electric heating coil/radiator 332, the floor heating water separator 333 is provided with a plurality of connecting ports, and each electric heating coil/radiator 332 can be connected with one connecting port through the pipeline, so that hot water can be provided for the plurality of electric heating coils/radiators 332 through the cold and hot water system 3. A tenth hand valve 334 and a mixing water pump 335 are arranged on the pipeline of the ground heating water separator 333 communicated with the water outlet 3102 of the cold and hot water system 3. The floor heating water collector 336 and the eleventh hand valve 337 are arranged on the pipeline for communicating the electric heating coil/radiator 332 with the energy storage water tank 31, the floor heating water collector 336 is provided with a plurality of connectors, and each electric heating coil/radiator 332 can be connected with one of the connectors through the pipeline, so that redundant hot water in the electric heating coil/radiator 332 can be transmitted to the energy storage water tank 33 for caching through the floor heating water collector 336.
Therefore, the air source heat pump/solar heat pump system can realize the equipment installation and debugging of the high-temperature refrigeration, low-temperature heating and domestic hot water through the matched use of the air conditioning assembly, the floor heating assembly and the domestic hot water assembly, and is convenient for teaching and practical training and assessment of students.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (5)
1. The air source heat pump/solar heat pump system installation and debugging practical training assessment device is characterized by comprising an automatic control system (1), a refrigerating and heating system (2), a cold and hot water system (3), an air conditioner controller (4), an indoor fan coil (5) and a water supply system (6), wherein the air conditioner controller (4) is connected with the indoor fan coil (5);
the water supply system (6) can supply water to the refrigerating and heating system (2) through the cold and hot water system (3);
the refrigerating and heating system (2), the cold and hot water system (3), the air conditioner controller (4) and the water supply system (6) are all connected with the automatic control system (1), and the automatic control system (1) is provided with a network module (7);
the refrigerating and heating system (2) is connected with the cold and hot water system (3), and the cold and hot water system (3) is connected with the indoor fan coil (5);
the refrigerating and heating system (2) comprises a compressor (21), a gas-liquid separator (22), an air-conditioning floor heating heat exchanger (23), an outdoor heat exchanger/solar heat collector (24), a four-way valve (25), a throttle expansion valve (26), a check valve group (27), an economizer (28), a liquid storage tank (29) and a drying filter (210);
the compressor (21) is provided with a compressor outlet (2101) and a compressor inlet (2102), the compressor outlet (2101) is communicated with a first interface of the four-way valve (25) through a pipeline, a second interface of the four-way valve (25) is connected with the outdoor heat exchanger/solar heat collector (24) through a pipeline, a third interface of the four-way valve (25) is connected with the compressor inlet (2102) through the gas-liquid separator (22), and a fourth interface of the four-way valve (25) is communicated with a first interface of the one-way valve (27) through the air-conditioning floor heating heat exchanger (23);
the first interface of the one-way valve group (27) is communicated with the second interface of the one-way valve group (27) through a liquid storage tank (29), an economizer (28), a drying filter (210) and a throttling expansion valve (26) which are sequentially communicated through pipelines, and the second interface of the one-way valve group (27) is connected with the outdoor heat exchanger/solar heat collector (24) through a pipeline;
the second interface of the four-way valve (25) is communicated with the third interface of the one-way valve group (27) through the outdoor heat exchanger/solar heat collector (24), and the third interface of the one-way valve group (27) is connected with the liquid storage tank (29) through a pipeline;
the throttling expansion valve (26) is connected with the air-conditioning floor heating heat exchanger (23) through a fourth interface of the one-way valve group (27);
an enthalpy-increasing interface (2103) is further arranged on the compressor (21), an enthalpy-increasing expansion valve (211) is connected in parallel to a communication pipeline between the economizer (28) and the dry filter (210), part of the refrigerant passing through the dry filter (210) flows to the throttling expansion valve (26) through a pipeline, and the other part of the refrigerant passing through the dry filter (210) flows through the economizer (28) through the enthalpy-increasing expansion valve (211) and finally flows into the compressor (21) through the enthalpy-increasing interface (2103) through a pipeline;
a liquid viewing mirror (212) is arranged on a pipeline communicated with the second interface of the throttling expansion valve (26) and the one-way valve group (27);
the cold and hot water system (3) comprises a water inlet (3101) and a water outlet (3102), one end of the water inlet (3101) can be connected with an air conditioning water return port (2301) of the air conditioning floor heating heat exchanger (23) through a circulating pump (32), and one end of the water outlet (3102) can be connected with an air conditioning water outlet (2302) of the air conditioning floor heating heat exchanger (23) through a pipeline;
the water supply system (6) can supply water to the refrigerating and heating system (2) through the water inlet (3101), and the other end of the water outlet (3102) can be connected with the indoor fan coil (5) through a pipeline;
the indoor fan coil (5) is connected with the energy storage water tank (33) through a pipeline, and the water supply system (6) is connected with the water inlet (3101) of the cold and hot water system (3) through the energy storage water tank (33).
2. The air source heat pump/solar heat pump system installation and debugging practical training and checking device according to claim 1, wherein the throttle expansion valve (26) and the enthalpy increasing expansion valve (211) are electronic expansion valves.
3. The air source heat pump/solar heat pump system installation and debugging practical training and checking device according to claim 1, wherein the energy storage water tank (33) is connected with the water inlet (3101) of the cold and hot water system (3) through an expansion water tank (34), a circulating water pump (35), a one-way valve (36) and a filter (37) which are sequentially communicated through pipelines.
4. The air source heat pump/solar heat pump system installation and debugging practical training examination device according to claim 1, wherein the water supply system (6) is connected with the energy storage water tank (33) through a pressure reducing valve (38), an automatic water supplementing valve (39) and a second water flow switch (338) which are sequentially communicated through pipelines, a water draining valve (310) is arranged on a pipeline connected with the energy storage water tank (33) through the automatic water supplementing valve (39), and the water draining valve (310) is connected with a sewer pipe (311) through the pipeline.
5. The air source heat pump/solar heat pump system installation and debugging practical training examination device according to claim 1, wherein a water outlet (3102) of the cold and hot water system (3) is connected with the indoor fan coil (5) through a water pressure gauge (312), a first hand valve (313), a second hand valve (314), a first water flow switch (315) and a third hand valve (316) which are sequentially communicated through pipelines, a gate valve (317) is arranged on the pipeline which is communicated with the water pressure gauge (312) and the first hand valve (313), the gate valve (317) is connected with a blow-off pipe (318), a fourth hand valve (319) and a fifth hand valve (320) are connected at two ends of the second hand valve (314) in parallel through pipelines, an electric heating boiler (321) is arranged between the fourth hand valve (319) and the fifth hand valve (320), and a sixth hand valve (322) is connected between the indoor fan coil (5) and the energy storage water tank (33).
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| CN110873479A (en) * | 2018-08-29 | 2020-03-10 | 江苏美力格环境科技有限公司 | Improved household multifunctional air source heat pump system |
| CN109300385A (en) * | 2018-11-24 | 2019-02-01 | 福建工程学院 | A kind of assembled fan coil experimental provision and its assembly technology |
| WO2022169455A1 (en) * | 2021-02-04 | 2022-08-11 | Wong Lee Wa | Air conditioning, heat pump and water heating system |
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