CN108302731A - A kind of control method of fan coil supply air system - Google Patents
A kind of control method of fan coil supply air system Download PDFInfo
- Publication number
- CN108302731A CN108302731A CN201810157730.0A CN201810157730A CN108302731A CN 108302731 A CN108302731 A CN 108302731A CN 201810157730 A CN201810157730 A CN 201810157730A CN 108302731 A CN108302731 A CN 108302731A
- Authority
- CN
- China
- Prior art keywords
- evaporator
- air
- compressor
- control method
- fan coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/07—Details of compressors or related parts
- F25B2400/077—Compressor control units, e.g. terminal boxes, mounted on the compressor casing wall containing for example starter, protection switches or connector contacts
-
- 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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21162—Temperatures of a condenser of the refrigerant at the inlet of the condenser
-
- 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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2116—Temperatures of a condenser
- F25B2700/21163—Temperatures of a condenser of the refrigerant at the outlet of the condenser
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A kind of control method of fan coil supply air system, the system comprises cabinet and the throttle valve being installed in cabinet, evaporator, centrifugal blower, four-way reversing valve, compressor, plate-type condenser, return pipe and water inlet pipe, the cabinet is accepted an unpleasant fact equipped with fresh air air inlet and fresh air outlet；The thermistor of the outlet and entrance that are respectively arranged at the evaporator the system also includes two, detects evaporating temperature respectively and evaporator outlet temperature obtains degree of superheat signal；The unit is capable of providing the low temperature fresh air needed for air-conditioning system, can reach optimum balance between energy consumption and air quality according to actual condition.
Description
Technical field
The present invention relates to air-treatment technical field more particularly to a kind of control methods of fan coil supply air system.
Background technology
Building energy conservation is one of the dose necessary of Building technology progress, and in building air conditioning whole year total energy consumption, new wind energy
Consumption accounts for 15%~24%, i.e. the 1/6 to 1/5 of air-conditioning whole year energy consumption will be used to handle fresh air.As people want indoor air quality
Ask higher and higher, design outdoor air ventilation rate is increased to original 2~4 times by U.S. heating refrigerating conditioner engineering Shi Xuehui standards, I
State's national standard is also modified ventilation quantity, and building energy consumption will be further increased in fresh air volume increase.The increase of fresh air can carry
High energy consumption, therefore a kind of system reaching balance between energy consumption and air quality of offer is critically important work.
Invention content
The fan coil supply air system that it is an object of the invention to propose to reach balance between a kind of energy consumption and air quality.
For this purpose, the present invention uses following technical scheme：
A kind of control method of fan coil supply air system, the system comprises cabinet and the throttle valve being installed in cabinet,
Evaporator, centrifugal blower, four-way reversing valve, compressor, plate-type condenser, return pipe and water inlet pipe, the cabinet, which is accepted an unpleasant fact, to be equipped with
Fresh air air inlet and fresh air outlet；
The thermistor of the outlet and entrance that are respectively arranged at the evaporator the system also includes two, respectively detection evaporation
Temperature and evaporator outlet temperature obtain degree of superheat signal；Using the throttle valve as actuator, microcomputer and electronic circuit are to adjust
Device measures the deviation of the degree of superheat and setting value in order to control, and micro computer setting adjusts program, changes electronic expansion valve opening, adjusts
Refrigerant flow realizes that PI is adjusted；Evaporator leaving air temp sensor for temperature samples, and is supplied to by conducting wire and electronic circuit
Microprocessor in control circuit board, microprocessor is according to the deviation of leaving air temp and setting value, according to control program to compression
Unit frequency is adjusted, and is such as overgauge, is then increased compressor frequency, compressor refrigeratory capacity is improved, to reduce leaving air temp.
The throttle valve uses electric expansion valve, and compressor is frequency-changeable compressor, according to the variation of leaving air temp, passes through pressure
Contracting machine variable frequency adjustment, 30~125Hz of frequency-tuning range make compressor electric motor rotating speed change, and then the production for changing compressor is cold
Amount；According to the evaporator outlet degree of superheat, change electronic expansion valve opening, adjusting refrigerant flow rate, to change the cold of evaporator,
Ensure evaporator constant air outlet temperature.
The evaporator is the fin-tube heat exchanger that copper pipe covers aluminium foil, and face velocity is 1.5~2.5m/s, front face area
For 0.234~0.324m2, evaporator tube number of rows is 8~10 rows, and number of tube passes is 4~5 journeys, 35.6~46.1m2 of heat transfer area, pipe
The freon refrigerant of interior flowing evaporates at low temperature, carries out heat exchange with the fresh air flowed outside pipe, makes Fresh air handing to dry bulb
Temperature is 6~7 DEG C, and the air condition of relative humidity 90%~95%, cold wind ratio is between 50~60kJ/kg.
The environment temperature of work is the 0C of -7 0C~43, power supply：380 V/50Hz, 28 kW of rated cooling capacity, specified heating
Measure 30 kW, unit blasting air amount：1680 m3/h run noise≤55dBA.
The compressor is frequency-changeable compressor.
The unit is capable of providing the low temperature fresh air needed for air-conditioning system, and undertakes whole humidity loads of air-conditioned room, ensures
The end-equipment dry cooling condition of system is run, and outdoor fresh air can be heated to the temperature needed for air-conditioning system in winter, according to reality
Operating mode reaches optimum balance between energy consumption and air quality.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Wherein：
Throttle valve 1, fresh air air inlet 2, evaporator 3, centrifugal blower 4, fresh air outlet 5, four-way reversing valve 6, compressor 7, plate
Formula condenser 8, return pipe 9, water inlet pipe 10.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
A kind of control method of fan coil supply air system, the system comprises cabinet and the throttlings being installed in cabinet
Valve, evaporator, centrifugal blower, four-way reversing valve, compressor, plate-type condenser, return pipe and water inlet pipe, the cabinet, which is seen, to be opened up
There are fresh air air inlet and fresh air outlet；
The thermistor of the outlet and entrance that are respectively arranged at the evaporator the system also includes two, respectively detection evaporation
Temperature and evaporator outlet temperature obtain degree of superheat signal；Using the throttle valve as actuator, microcomputer and electronic circuit are to adjust
Device measures the deviation of the degree of superheat and setting value in order to control, and micro computer setting adjusts program, changes electronic expansion valve opening, adjusts
Refrigerant flow realizes that PI is adjusted；Evaporator leaving air temp sensor for temperature samples, and is supplied to by conducting wire and electronic circuit
Microprocessor in control circuit board, microprocessor is according to the deviation of leaving air temp and setting value, according to control program to compression
Unit frequency is adjusted, and is such as overgauge, is then increased compressor frequency, compressor refrigeratory capacity is improved, to reduce leaving air temp.
The unit is capable of providing the low temperature fresh air needed for air-conditioning system, and undertakes whole humidity loads of air-conditioned room, ensures
The end-equipment dry cooling condition of system is run, and outdoor fresh air can be heated to the temperature needed for air-conditioning system in winter.Unit is main
By compressor, board-like water-cooled condenser（Or telescoping water-cooling condenser）, finned tube evaporator, centrifugal fan, throttling machine
The part such as structure and automatic control component forms.The technical parameter of unit is as follows：The environment temperature of work is the 0C of -7 0C~43, electricity
Source：380 V/50Hz, 28 kW of rated cooling capacity, 30 kW of specified heating capacity, unit blasting air amount：1680 m3/h run noise
≤55dBA。
The throttle valve uses electric expansion valve, and compressor is frequency-changeable compressor, according to the variation of leaving air temp, passes through pressure
Contracting machine variable frequency adjustment, 30~125Hz of frequency-tuning range make compressor electric motor rotating speed change, and then the production for changing compressor is cold
Amount；According to the evaporator outlet degree of superheat, change electronic expansion valve opening, adjusting refrigerant flow rate, to change the cold of evaporator,
Ensure evaporator constant air outlet temperature.
The evaporator is the fin-tube heat exchanger that copper pipe covers aluminium foil, and face velocity is 1.5~2.5m/s, front face area
For 0.234~0.324m2, evaporator tube number of rows is 8~10 rows, and number of tube passes is 4~5 journeys, 35.6~46.1m2 of heat transfer area, pipe
The freon refrigerant of interior flowing evaporates at low temperature, carries out heat exchange with the fresh air flowed outside pipe, makes Fresh air handing to dry bulb
Temperature is 6~7 DEG C, and the air condition of relative humidity 90%~95%, cold wind ratio is between 50~60kJ/kg.
The environment temperature of work is the 0C of -7 0C~43, power supply：380 V/50Hz, 28 kW of rated cooling capacity, specified heating
Measure 30 kW, unit blasting air amount：1680 m3/h run noise≤55dBA.
The compressor is frequency-changeable compressor.
The technical principle of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain the present invention's
Principle, and it cannot be construed to limiting the scope of the invention in any way.Based on the explanation herein, the technology of this field
Personnel would not require any inventive effort the other specific implementation modes that can associate the present invention, these modes are fallen within
Within protection scope of the present invention.
Claims (5)
1. a kind of control method of fan coil supply air system, the system comprises cabinet and the throttlings being installed in cabinet
Valve, evaporator, centrifugal blower, four-way reversing valve, compressor, plate-type condenser, return pipe and water inlet pipe, the cabinet, which is seen, to be opened up
There are fresh air air inlet and fresh air outlet, it is characterised in that：
The thermistor of the outlet and entrance that are respectively arranged at the evaporator the system also includes two, respectively detection evaporation
Temperature and evaporator outlet temperature obtain degree of superheat signal；Using the throttle valve as actuator, microcomputer and electronic circuit are to adjust
Device measures the deviation of the degree of superheat and setting value in order to control, and micro computer setting adjusts program, changes electronic expansion valve opening, adjusts
Refrigerant flow realizes that PI is adjusted；Evaporator leaving air temp sensor for temperature samples, and is supplied to by conducting wire and electronic circuit
Microprocessor in control circuit board, microprocessor is according to the deviation of leaving air temp and setting value, according to control program to compression
Unit frequency is adjusted, and is such as overgauge, is then increased compressor frequency, compressor refrigeratory capacity is improved, to reduce leaving air temp.
2. a kind of control method of fan coil supply air system as described in claim 1, it is characterised in that：The throttle valve is adopted
With electric expansion valve, compressor is frequency-changeable compressor, according to the variation of leaving air temp, is adjusted by compressor variable frequency, frequency tune
30~125Hz of adjusting range makes compressor electric motor rotating speed change, and then changes the refrigeratory capacity of compressor；According to evaporator outlet mistake
Temperature, changes electronic expansion valve opening, and adjusting refrigerant flow rate ensures evaporator leaving air temp to change the cold of evaporator
It is constant.
3. a kind of control method of fan coil supply air system as described in claim 1, it is characterised in that：The evaporator is
Copper pipe covers the fin-tube heat exchanger of aluminium foil, and face velocity is 1.5~2.5m/s, and front face area is 0.234~0.324m2, is steamed
Hair device pipe number of rows is 8~10 rows, and number of tube passes is 4~5 journeys, 35.6~46.1m2 of heat transfer area, the freon refrigeration of Bottomhole pressure
Agent is evaporated at low temperature, with pipe outside flow fresh air carry out heat exchange, make Fresh air handing to dry-bulb temperature be 6~7 DEG C, it is relatively wet
The air condition of degree 90%~95%, cold wind ratio is between 50~60kJ/kg.
4. a kind of control method of fan coil supply air system as described in claim 1, it is characterised in that：The environment temperature of work
Degree is the 0C of -7 0C~43, power supply：380 V/50Hz, 28 kW of rated cooling capacity, 30 kW of specified heating capacity, unit blasting air amount：
1680 m3/h run noise≤55dBA.
5. a kind of control method of fan coil supply air system as described in claim 1, it is characterised in that：The compressor is
Frequency-changeable compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157730.0A CN108302731A (en) | 2018-02-24 | 2018-02-24 | A kind of control method of fan coil supply air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810157730.0A CN108302731A (en) | 2018-02-24 | 2018-02-24 | A kind of control method of fan coil supply air system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108302731A true CN108302731A (en) | 2018-07-20 |
Family
ID=62848976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810157730.0A Pending CN108302731A (en) | 2018-02-24 | 2018-02-24 | A kind of control method of fan coil supply air system |
Country Status (1)
| Country | Link |
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| CN (1) | CN108302731A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temperature control method and air conditioner |
| CN110081568A (en) * | 2019-05-22 | 2019-08-02 | 广东美的制冷设备有限公司 | Air conditioner and its air conditioning control method, control device and readable storage medium storing program for executing |
| CN110285618A (en) * | 2019-06-27 | 2019-09-27 | 山东建筑大学 | A kind of frequency-converting control device and control method of heat pump |
| CN110388731A (en) * | 2019-07-26 | 2019-10-29 | 广东美的暖通设备有限公司 | Control method and system, the air-conditioning system and computer installation of air-conditioning system |
| CN111947304A (en) * | 2020-08-26 | 2020-11-17 | 广州中环万代环境工程有限公司 | Double-parameter control heat pump type hot air device and hot air generating method thereof |
| CN111981649A (en) * | 2019-05-22 | 2020-11-24 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
| CN113685913A (en) * | 2021-08-02 | 2021-11-23 | 重庆海尔空调器有限公司 | Control method of fresh air conditioner |
| CN113685912A (en) * | 2021-08-02 | 2021-11-23 | 重庆海尔空调器有限公司 | Control method of fresh air conditioner |
| CN115200082A (en) * | 2021-04-14 | 2022-10-18 | 宁波奥克斯电气股份有限公司 | Air conditioner with waste heat recovery function |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109945433A (en) * | 2019-03-20 | 2019-06-28 | 珠海格力电器股份有限公司 | Temperature control method and air conditioner |
| CN110081568A (en) * | 2019-05-22 | 2019-08-02 | 广东美的制冷设备有限公司 | Air conditioner and its air conditioning control method, control device and readable storage medium storing program for executing |
| CN111981649A (en) * | 2019-05-22 | 2020-11-24 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method and device and readable storage medium |
| CN111981649B (en) * | 2019-05-22 | 2024-05-28 | 广东美的制冷设备有限公司 | Air conditioner, air conditioner control method, control device and readable storage medium |
| CN110285618A (en) * | 2019-06-27 | 2019-09-27 | 山东建筑大学 | A kind of frequency-converting control device and control method of heat pump |
| CN110285618B (en) * | 2019-06-27 | 2020-03-27 | 山东建筑大学 | Frequency conversion control device and control method of heat pump |
| CN110388731A (en) * | 2019-07-26 | 2019-10-29 | 广东美的暖通设备有限公司 | Control method and system, the air-conditioning system and computer installation of air-conditioning system |
| CN110388731B (en) * | 2019-07-26 | 2021-03-16 | 广东美的暖通设备有限公司 | Control method and system of air conditioning system, air conditioning system and computer device |
| CN111947304A (en) * | 2020-08-26 | 2020-11-17 | 广州中环万代环境工程有限公司 | Double-parameter control heat pump type hot air device and hot air generating method thereof |
| CN115200082A (en) * | 2021-04-14 | 2022-10-18 | 宁波奥克斯电气股份有限公司 | Air conditioner with waste heat recovery function |
| CN113685913A (en) * | 2021-08-02 | 2021-11-23 | 重庆海尔空调器有限公司 | Control method of fresh air conditioner |
| CN113685912A (en) * | 2021-08-02 | 2021-11-23 | 重庆海尔空调器有限公司 | Control method of fresh air conditioner |
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Application publication date: 20180720 |
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