CN102384555B - Full fresh air heat pump type constant temperature and constant humidity air conditioning system - Google Patents
Full fresh air heat pump type constant temperature and constant humidity air conditioning system Download PDFInfo
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- CN102384555B CN102384555B CN 201110388568 CN201110388568A CN102384555B CN 102384555 B CN102384555 B CN 102384555B CN 201110388568 CN201110388568 CN 201110388568 CN 201110388568 A CN201110388568 A CN 201110388568A CN 102384555 B CN102384555 B CN 102384555B
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Abstract
The invention relates to a full fresh air heat pump type constant temperature and constant humidity air conditioning system which comprises at least two groups of working units mounted in an outdoor unit, an air treatment device mounted in an indoor unit, and a control system, wherein each group of working unit respectively comprises a compressor, an oil separator, a four-way reversing valve, an outdoor heat exchanger, a first expansion valve, a drier filter, a liquid supply electromagnetic valve, a second expansion valve and a liquid storage and accumulation energy-saving heat exchanger; the air treatment device comprises an indoor heat exchanger, a humidifier, a heater and a centrifugal fan which are arrayed in sequence; and the air treatment device is shared by all the working units. The air conditioning system overcomes the phenomenon that the normal operation of the units is influenced by changes of a full fresh air working condition and the phenomenon that a large quantity of energy is consumed by the units due to the adoption of electricity, steam, hot water and the like as heat sources during winter heating.
Description
Technical field
The present invention relates to a kind of air-conditioning system, be specifically related to the constant temperature and humidity air-conditioning system of the employing heat pump techniques under a kind of all-fresh air operating mode.
Background technology
Along with improving constantly of quality of the life, people are also more and more higher to the requirement of indoor air quality, especially various laboratories, the storage chamber also particularly urgent to high-quality air quality.At present, various Laboratory Airs are processed the means that adopt generally two kinds: a kind of is directly to deliver to new wind indoor by blower fan, common constant temperature and humidity machine is installed in the room, because the difference of the new air temperature in each season, the room temperature fluctuation is larger, causes room temperature and humidity can not satisfy technique and requirement of experiment; The second is to adopt the whole fresh wind air-condition unit to add dehumidifier, humidifier and heater to form a system, air conditioner with fresh air ventilator is responsible for room temperature is controlled, room humidity is regulated in unlatching by dehumidifier and humidifier, because of employing mostly is that adjustment is carried out in electrical heating, neither energy-conservation, control accuracy can not satisfy room humiture requirement, and because not being a control system, the unit operation reliability can not get ensureing.
Summary of the invention
The purpose of this invention is to provide a kind of all-fresh air constant temperature and humidity air-conditioning system with heat pump functional, overcome because of the phenomenon of the normal operation of the variable effect unit of all-fresh air operating mode and add the thermal recovery electricity winter or steam, hot water etc. cause the larger phenomenon of power consumption of unit as thermal source.
The present invention realizes with following technical scheme: a kind of all-fresh air heat pump type constant temperature and humidity air-conditioning system comprises the above work unit of at least two groups that are installed in the off-premises station, is installed on air processor and control system in the indoor set, it is characterized in that:
Described every group of working machine group comprises respectively compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger, the first expansion valve, device for drying and filtering, liquid supply electromagnetic valve, the second expansion valve, liquid storage hydrops province energy heat exchanger; Described liquid storage hydrops is economized and can be provided with reservoir, gas-liquid separator in the heat exchanger; The exhaust outlet of described compressor is connected in series reservoir, device for drying and filtering, liquid supply electromagnetic valve, the second expansion valve in oil eliminator, four-way change-over valve, outdoor heat exchanger, the first expansion valve, the liquid storage hydrops province energy heat exchanger successively; Outdoor heat exchanger one side is provided with axial flow blower;
Described air processor comprises indoor heat exchanger, humidifier, heater, the centrifugal blower that is arranged in order; Every group of equal common air treating apparatus of work unit;
Indoor heat exchanger one end of described air processor connects the second expansion valve of every group of work unit, the gas-liquid separator of the other end of indoor heat exchanger in the four-way change-over valve connection liquid storage hydrops province energy heat exchanger of every group of work unit, gas-liquid separator connects the gas returning port of compressor;
Described control system comprises PLC programmable controller, telecommunication module and warm and humid sensor.
The air inlet of described indoor heat exchanger is provided with the outdoor environment temperature sensor, and the air outlet of described centrifugal blower is provided with Temperature Humidity Sensor.
Described humidifier is electric pole type or electrothermal.
Described heater is that electrical heating, steam or hot water are as thermal source.
Described compressor is fully-closed vortex formula, semi-hermetic piston-type or semi-closed screw type.
Compared with prior art, advantage of the present invention is:
1, adopts the above work of at least two groups unit, realized that controlling flexibly needs according to the variation of all-fresh air operating mode opens the compressor number of units, can effectively control unit air-out parameter, prevent from selecting few impact of too much shutting down temperature and humidity because of number of compressors;
2, because having adopted multiple compressors, had many groups heat pump, so winter heating uses rationally heat pump to heat according to working condition requirement, greatly saved the energy, overcome in the conventional art and generally to adopt electrical heating to heat the high defective of power consumption winter;
3, provide accurate various required data-signals by various sensors for system, adopt high accuracy PLC programmable control system, realize the accurate control of indoor air quality, can realize remote data acquisition, monitoring, adjusting to this air-conditioning system by the telecommunication module, realize intelligent Long-distance Control.
Compact conformation of the present invention, convenient for installation and maintenance, energy-conserving and environment-protective, security of system is reliable.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: PLC programmable controller 1, telecommunication module 2, warm and humid sensor 3, centrifugal blower 4, heater 5, humidifier 6, indoor heat exchanger 7, compressor 8, oil eliminator 9, four-way change-over valve 10, outdoor heat exchanger 11, axial flow blower 12, the first expansion valves 13, liquid storage hydrops are economized energy heat exchanger 14, reservoir 15, gas-liquid separator 16, device for drying and filtering 17, liquid supply electromagnetic valve 18, the second expansion valves 19, outdoor environment temperature sensor 20.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Shown in Figure 1, a kind of all-fresh air heat pump type constant temperature and humidity air-conditioning system comprises the above work unit of at least two groups that are installed in the off-premises station, is installed on air processor and control system in the indoor set.Control system comprises PLC programmable controller 1, telecommunication module 2, warm and humid sensor 3 and outdoor environment temperature sensor 20; Every group of work unit includes compressor 8, oil eliminator 9, four-way change-over valve 10, outdoor heat exchanger 11, the first expansion valve 13, device for drying and filtering 17, liquid supply electromagnetic valve 18, the second expansion valve 19 and liquid storage hydrops are economized energy heat exchanger 14, the liquid storage hydrops is economized and can be provided with reservoir 15 and gas-liquid separator 16 in the heat exchanger 14, the exhaust outlet of compressor 8 is connected in series oil eliminator 9 successively, four-way change-over valve 10, outdoor heat exchanger 11, the first expansion valve 13, the liquid storage hydrops is economized the reservoir 15 in the energy heat exchanger, device for drying and filtering 17, liquid supply electromagnetic valve 18 and the second expansion valve 19, outdoor heat exchanger 11 1 sides are provided with axial flow blower 12; Air processor comprises indoor heat exchanger 7, humidifier 6, heater 5 and the centrifugal blower 4 that is arranged in order, the all-fresh air import of air processor is provided with outdoor environment temperature sensor 20, centrifugal blower 4 air outlets are provided with warm and humid sensor 3, every group of equal common air treating apparatus of work unit; Indoor heat exchanger 7 one ends of air processor connect the second expansion valve 19 of every group of work unit, the gas-liquid separator 16 of the other end of indoor heat exchanger 7 in the four-way change-over valve 10 connection liquid storage hydrops province energy heat exchangers of every group of work unit, gas-liquid separator connects the gas returning port of compressor 8.
Adopted four groups of work units in above-described embodiment, per two groups of work units share an indoor heat exchanger; Humidifier 6 is electric pole type or electrothermal among the present invention, heater 5 for electrical heating, steam or hot water as thermal source, compressor 7 is fully-closed vortex formula, semi-hermetic piston-type or semi-closed screw type.The air-conditioning unit can be made split type; Also can make monoblock type, be installed in outdoor.The all-fresh air of air processor enters by the shutter of unit fresh wind port, delivers to air-conditioned room by indoor heat exchanger, humidifier, heater, the centrifugal blower air-out of unit.
The present invention has summer in winter two kinds of operating modes, is described as follows:
Summer condition: air-conditioning mainly is to freeze and except wet trade during summer.
When freezing summer, unit sets up " Dual OMU Servers Mode ", " three machine patterns ", " four machine patterns " separately according to outdoor environment temperature.When environment temperature is spent more than or equal to 35, select " four machine patterns "; When environment temperature is spent less than 35 more than or equal to 25 degree, select " three machine patterns "; When environment temperature is spent less than 25 more than or equal to 15 degree, select " Dual OMU Servers Mode "; When environment temperature is spent less than 15, the compressor full cut-off.
The workflow of every group of work unit: refrigerated dehumidification is selected by system, compressor becomes refrigerant compression the gas of HTHP, after separating the oil in the exhaust, oil eliminator enters outdoor heat exchanger by four-way change-over valve, outdoor heat exchanger with the gas cold of HTHP congeal into the liquid of HTHP enter the liquid storage hydrops economize can heat exchanger reservoir, process by liquid supply electromagnetic valve through device for drying and filtering, the second expansion valve becomes the liquid throttling of HTHP the liquid of low-temp low-pressure, entering indoor heat exchanger gasifies and becomes the gas of low-temp low-pressure, enter the gas-liquid separator that the liquid storage hydrops is economized the energy heat exchanger through four-way change-over valve again, to enter compressor after a small amount of fluid separation applications in the return-air, so periodic duty.The air of centrifugal blower after with indoor heat exchanger cooling and dehumidifying sent into the laboratory; Axial flow blower with the heat of outdoor heat exchanger to outdoor discharge.
In order to guarantee to test the accurate control of indoor temperature, carry out the compensation of temperature trace by heater, be specially: temperature is opened three grades of electrical heating less than or equal to 14 degree; Temperature is opened the secondary electrical heating less than or equal to 19 degree; Temperature is opened the one-level electrical heating less than or equal to 21 degree; Humidity is the comparison by actual air-out humidity and setting value, and humidity is on the low side automatic detection humidification by humidifier proportional quantities control humidification amount, reaches the function of constant temperature and humidity.
Winter condition: winter is main is to heat up and add wet trade.
In the time of in the winter time, outdoor temperature is lower, and unit is opened heat pump functional.When environment temperature is spent less than-2.5, select " four machine patterns "; When environment temperature is spent less than 3.5 more than or equal to-2.5 degree, select " three machine patterns "; When environment temperature is spent less than 7 more than or equal to 3.5 degree, select " Dual OMU Servers Mode "; When environment temperature is spent less than 13 more than or equal to 7 degree, select " single cpu mode "; When environment temperature is spent the compressor full cut-ofves more than or equal to 15; When environment temperature is spent less than 15 more than or equal to 13 degree, select the electrical heating pattern.
Claims (1)
1. all-fresh air heat pump type constant temperature and humidity air-conditioning system comprises the above work unit of at least two groups that are installed in the off-premises station, is installed on air processor and control system in the indoor set, it is characterized in that:
Described every group of working machine group comprises respectively compressor, oil eliminator, four-way change-over valve, outdoor heat exchanger, the first expansion valve, device for drying and filtering, liquid supply electromagnetic valve, the second expansion valve, liquid storage hydrops province energy heat exchanger; Described liquid storage hydrops is economized and can be provided with reservoir, gas-liquid separator in the heat exchanger, and gas-liquid separator is arranged at reservoir inside; The exhaust outlet of described compressor is connected in series reservoir, device for drying and filtering, liquid supply electromagnetic valve, the second expansion valve in oil eliminator, four-way change-over valve, outdoor heat exchanger, the first expansion valve, the liquid storage hydrops province energy heat exchanger successively; Outdoor heat exchanger one side is provided with axial flow blower;
Described air processor comprises indoor heat exchanger, humidifier, heater, the centrifugal blower that is arranged in order; Every group of equal common air treating apparatus of work unit;
Indoor heat exchanger one end of described air processor connects the second expansion valve of every group of work unit, the gas-liquid separator of the other end of indoor heat exchanger in the four-way change-over valve connection liquid storage hydrops province energy heat exchanger of every group of work unit, gas-liquid separator connects the gas returning port of compressor;
Described control system comprises PLC programmable controller, telecommunication module and warm and humid sensor; The air inlet of described indoor heat exchanger is provided with the outdoor environment temperature sensor, and the air outlet of described centrifugal blower is provided with Temperature Humidity Sensor; Described humidifier is electric pole type or electrothermal; Described heater is that electrical heating, steam or hot water are as thermal source; Described compressor is fully-closed vortex formula, semi-hermetic piston-type or semi-closed screw type.
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| CN 201110388568 CN102384555B (en) | 2011-11-30 | 2011-11-30 | Full fresh air heat pump type constant temperature and constant humidity air conditioning system |
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| CN 201110388568 CN102384555B (en) | 2011-11-30 | 2011-11-30 | Full fresh air heat pump type constant temperature and constant humidity air conditioning system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2013221730A (en) * | 2012-04-19 | 2013-10-28 | Daikin Industries Ltd | Humidity control device |
| CN108253556A (en) * | 2018-02-09 | 2018-07-06 | 广东申菱环境系统股份有限公司 | A kind of the all-fresh air central air-conditioning and its preheating control method of electrical heating preheating |
| CN108758795B (en) * | 2018-04-11 | 2019-06-11 | 浙江国祥股份有限公司 | A kind of superhigh precision constant temperature and humidity air-conditioning system and control method |
| CN108679780B (en) * | 2018-04-11 | 2019-08-09 | 浙江国祥股份有限公司 | A kind of high-precision constant-temperature constant-moisture air-conditioning system and control method |
| CN110178735A (en) * | 2019-04-18 | 2019-08-30 | 山东陆海新能源技术有限公司 | A kind of multifunctional disinfecting constant temperature and humidity ecologic breeding unit |
| CN115143660B (en) * | 2022-06-30 | 2024-10-22 | 雅凯热能技术(江苏)有限公司 | Warehouse air conditioning system |
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| CN2442140Y (en) * | 2000-07-11 | 2001-08-08 | 周祖毅 | Energy saving air heat source hot pump type constant temperature constant humidity air conditioner |
| CN2606291Y (en) * | 2003-03-05 | 2004-03-10 | 广东科龙电器股份有限公司 | Circuit controlling system of double compressor system room air conditioner |
| CN1534242A (en) * | 2003-04-02 | 2004-10-06 | 张沈杰 | Variable capacity central air conditioner |
| JP2005249336A (en) * | 2004-03-05 | 2005-09-15 | Mitsubishi Electric Corp | Air-conditioner |
| US20070163278A1 (en) * | 2006-01-18 | 2007-07-19 | Yuan-Hung Hung | Air conditioner |
| CN201866891U (en) * | 2010-10-19 | 2011-06-15 | 宝钢发展有限公司 | Electric room air conditioner energy-saving control device |
| CN102032727A (en) * | 2010-12-11 | 2011-04-27 | 上海汉福空气处理设备有限公司 | Intelligent control system for variable flow direct evaporation type ice storage air conditioner |
| CN202338977U (en) * | 2011-11-30 | 2012-07-18 | 江苏永昇空调有限公司 | All fresh air heat pump type constant temperature and humidity air conditioning system |
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