CN102589214A - Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit - Google Patents

Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit Download PDF

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Publication number
CN102589214A
CN102589214A CN2012100633039A CN201210063303A CN102589214A CN 102589214 A CN102589214 A CN 102589214A CN 2012100633039 A CN2012100633039 A CN 2012100633039A CN 201210063303 A CN201210063303 A CN 201210063303A CN 102589214 A CN102589214 A CN 102589214A
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China
Prior art keywords
heat exchange
air draft
new air
air
new
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CN2012100633039A
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Chinese (zh)
Inventor
庞丹
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China Northeast Architectural Design and Research Institute Co Ltd
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China Northeast Architectural Design and Research Institute Co Ltd
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Priority to CN2012100633039A priority Critical patent/CN102589214A/en
Publication of CN102589214A publication Critical patent/CN102589214A/en
Pending legal-status Critical Current

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Abstract

A winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit relates to an air conditioning operation system. The system comprises automatic defrosting of a unit heat exchanger, automatic control of a new air bypass pipe and an electric air valve, and pressure difference-induced automatic alarm of an air-exhaust-side filter screen. A pressure difference switch is arranged at an air-exhaust-side heat exchanger of the new air exhaust heat exchange unit, a bypass pipe and the electric air valve are arranged between a new air pipe and a blow pipe, an automatic reset anti-freezing switch is arranged at the rear of a new-air-side heat exchanger, and another pressure difference switch is arranged at the air-exhaust-side filter screen of the air exhaust heat exchange unit, which makes normal operation of the new air exhaust heat exchange unit in winter possible. The invention has simple and fast field installation, easy and flexible operation, lowered initial investment and saved operation cost, really achieves automatic high-efficiency energy-saving operation, and is suitable for design of central air conditioning systems.

Description

The new antifreeze operational system of air draft heat exchange machine unit in winter integrated form automatic defrosting
Technical field
The present invention relates to a kind of operation of air conditioner system, particularly relate to the antifreeze operational system of a kind of new air draft heat exchange machine unit in winter integrated form automatic defrosting.
Background technology
Along with the raising day by day of social life level, people not only have higher requirements to indoor temperature, and indoor air quality has also been had further requirement.Ventilation is to improve the effective method of indoor air quality, not only can replenish outdoor fresh air, eliminates CO, CO 2, venomous injurant such as formaldehyde, filtering dust bacterium is discharged foul atmosphere, can avoid occurring the ill syndrome SBS of building simultaneously.
China is vast in territory, populous; But the energy capable of using per capita is not as good as 50% of world average level; Country has put into effect multi-section laws and regulations such as " Energy Conservation Law of the People's Republic of China ", " public building energy-saving design standard " in succession in recent years, is intended to improve China's efficiency of energy utilization.The most important thing of " 12 " plan is confirmed as in energy-saving and emission-reduction.
Central air conditioner system is the architectural energy consumption rich and influential family, accounts for more than 35% of whole building energy consumption, and the new wind processing energy consumption of air-conditioning system accounts for 30 ~ 40% of whole air-conditioning system energy consumption.Along with improving constantly of the energy-conservation requirement of public building; Becoming better and approaching perfection day by day of power-saving technology, the air-conditioning specialized vendor can provide the new air draft heat exchange unit of multiple model, and heat exchange efficiency is about 70%; When satisfying ventilation, air-conditioning system can realize energy-efficient operation.
In recent years along with the extensive use of new air draft heat exchange unit, emerged in operation some problems, especially at cold, severe cold area winter operation.A kind of is after set heat exchange is passed through in air draft, to be lower than dew-point temperature in the heat exchanger surface dewfall, and continuation operation heat exchanger surface is below the freezing point and then can amasss frost; The attendant is difficult in time finding, removes long-pending frost; To reduce the heat exchanger channels sectional area, increase air drag, reduce exhaust air rate greatly; New air draft heat exchange efficiency reduces, and unit can not normally move; A kind of is that new wind is lower than 0 ℃ through temperature after the heat exchange, and hot coil (surface cooler) water velocity is on the low side again owing to unit, causes the bursting by freezing of freezing in the local pipe to leak, and can not normally use.General new wind steam or the electrothermal tube of adopting is preheated to 5 ℃; Heat exchange again, mode of heating operation again; This kind mode runs counter to energy-conservation principle; Because air-conditioning system automatic control degree is high or manually can not accomplish timely regulation and control, most users only begin to rehearse winter wind newly wind or winter simply need not, these all run counter to the basic demand that energy-saving and emission-reduction, ventilation improve indoor air quality.
Cold, the antifreeze operation of severe cold area new air draft heat exchange in winter unit is unfavorable, the long-pending frost of heat exchange set heat exchange device, screen pack dust stratification are difficult for all in time finding that very serious during discovery, long-pending simultaneously frost is difficult for removing fast; New wind-warm syndrome is spent to hang down in the time of can only waiting unit to leak and is just made up.
Summary of the invention
The object of the present invention is to provide the antifreeze operational system of a kind of new air draft heat exchange machine unit in winter integrated form automatic defrosting; This system solves cold, the disadvantageous problem of the severe cold area antifreeze operation of new air draft heat exchange in winter unit; Through the design measure of structure and installation, make the normal operation of air draft heat exchange machine unit in winter become possibility.
The objective of the invention is to realize through following technical scheme:
The new antifreeze operational system of air draft heat exchange machine unit in winter integrated form automatic defrosting; Before and after new air draft heat exchange unit, the air draft side heat exchanger pressure difference switch is set in its system; Bypass pipe and switching mode Electric air valve are set between fresh wind tube and the ajutage; Behind new air side heat exchanger, the antifreeze switch that automatically resets is set, before and after new air draft heat exchange unit, the air draft side screen pack pressure difference switch is set; Signal feedback through pressure difference switch is connected with the signal controlling case, and signal controlling case signal is closed down automatically and is connected to blower fan and exhaust blower; Between fresh wind tube and the ajutage bypass pipe is set; Behind new air side heat exchanger, the antifreeze switch that automatically resets is set.
The antifreeze operational system of described new air draft heat exchange machine unit in winter integrated form automatic defrosting, its described antifreeze switching signal feedback that automatically resets is connected to the signal controlling case, and signal controlling case circuit is connected with the switching mode Electric air valve that is arranged at bypass pipe; Before and after new air draft heat exchange unit, the air draft side screen pack switch is set, feedback signal is connected to the signal controlling case.
The antifreeze operational system of described new air draft heat exchange machine unit in winter integrated form automatic defrosting, its described new air draft heat exchange unit is connected with the exhaust duct exhaust outlet, and aluminium alloy lightweight airduct check-valves is arranged on the exhaust duct, and electronic new air-valve is arranged on the fresh wind tube.
The antifreeze operational system of described new air draft heat exchange machine unit in winter integrated form automatic defrosting, its described integrated form signal controlling case is hung wall and is installed.
  
Advantage of the present invention and effect are:
1. the present invention reduces initial cost, practices thrift operating cost, and system's energy saving in running is reliable;
2. the present invention really accomplishes automatic operation, the manual manipulation strength of reduction personnel;
3. the on-the-spot simple installation of the present invention is quick, and system is simple to operate flexibly.
Description of drawings
Fig. 1 is the antifreeze operational system sketch map of air draft heat exchange unit integrated form automatic defrosting of the present invention;
Fig. 2 is an integrated form signal controlling case electrical schematic diagram of the present invention.
The specific embodiment
With reference to the accompanying drawings the present invention is elaborated.
1 parts label is among the figure:
New air draft heat exchange unit 1; Air draft side heat exchanger 2; Pressure difference switch 3; Signal controlling case 4; Pressure fan 5; Exhaust blower 6; Hot coil 7 again; Fresh wind tube 8; Ajutage 9; Bypass pipe 10; New air side heat exchanger 11; Antifreeze switch 12 automatically resets; Electric air valve 13; Air draft side screen pack 14; Switch 15; Exhaust duct 16; Airduct check-valves 17; Electronic new air-valve 18.
Symbol is among Fig. 2:
The FU fuse; The KM contactor; The KA auxiliary reclay; The KH electrothermal relay; HY, HR signal lamp; Sudden strain of a muscle formula electric bell in the HA; SF, SS, SM control button; SP1, SP2 pressure switch; The SQ1 antifreeze switch that automatically resets.
The present invention is provided with pressure difference switch 3 in new air draft heat exchange unit 1, air draft side heat exchanger 2 front and back; See accompanying drawing 1; For preventing new air draft heat exchange unit 1, hot coil 7 (surface cooler) bursting by freezing of freezing again, bypass pipe 10 and switching mode Electric air valve 13 are set, between fresh wind tube 8 and ajutage 9 at the new air side heat exchanger 11 back settings antifreeze switches 12 that automatically reset; For guaranteeing that exhaust air rate reaches design rating, new air draft heat exchange unit 1, air draft side screen pack 14 front and back are provided with pressure difference switch 15.Through above measure, make the normal operation of new air draft heat exchange machine unit in winter become possibility.
Bypass pipe 10 is installed in the job site between fresh wind tube 8 and ajutage 9; New air draft heat exchange unit 1 is installed pressure difference switch 3 and the switch 15 and the antifreeze switch 12 that automatically resets, and integrated form signal controlling case 4 is hung wall install and can accomplish.
See accompanying drawing 1, will increase heat exchanger front and back pressure reduction like the long-pending frosts of air draft side heat exchanger 2, through pressure difference switch 3 with signal feedback to integrated form signal controlling case 4; Reach preset value, send signal by signal controlling case 4 and close down pressure fan 5 automatically like front and back pressure reduction; Exhaust blower 6 normally moves, and air draft is melted air draft side heat exchanger 2 surface areas frost fast, makes air draft side heat exchanger 2 front and back pressure reduction recover normal; Pressure difference switch 3 feedback signals are to signal controlling case 4, and signal controlling case 4 is opened pressure fan 5 automatically again.For preventing new air draft heat exchange unit 1, hot coil 7 (surface cooler) bursting by freezing of freezing again, between fresh wind tube 8 and ajutage 9, bypass pipe 10 is set,
In new air side heat exchanger 11 backs the antifreeze switch 12 that automatically resets is set; Outdoor new wind temperature after heat exchange is lower than 3 ℃; Automatically reset antifreeze switch 12 with signal feedback to signal controlling case 4, and signal controlling case 4 is opened the switching mode Electric air valve 13 that is arranged at bypass pipe 10 automatically, and the air-supply after the heating is mixed with outdoor new wind; New air side heat exchanger 11 back temperature reach 6 ℃, and signal controlling case 4 is closed Electric air valve 13 automatically.For guaranteeing that exhaust air rate reaches design rating; New air draft heat exchange unit 1, air draft side screen pack 14 front and back are provided with switch 15 (pressure difference switch); The pressure reduction increase reached preset value before and after air draft side screen pack 14 dust stratifications too much caused; With feedback signal to signal controlling case 4, signal controlling case 4 sends alarm signal through indicator lamp, the timely cleaning and filtering net of prompting attendant.Through above measure, make the normal operation of new air draft heat exchange machine unit in winter become possibility.Exhaust duct 16 is connected with new air draft heat exchange unit 1 exhaust outlet, and aluminium alloy lightweight airduct check-valves 17 is arranged on the exhaust duct 16, and electronic new air-valve 18 is arranged on the fresh wind tube 8.
Among the present invention about the requirement of air-conditioning partial design, construction all can by " heating and ventilation and air conditioning design specification " (GB50019-2003), " code for acceptance of construction quality of conditioning works " (GB50243-2002) etc. standard carry out, the requirement of electric part design, construction all can (GB/T50314) etc. standard, standard be carried out by " civil buildings electrical design standard " (JGJ 16-2008), " Standsrd for design of intelligent buildings ".

Claims (4)

1. the new antifreeze operational system of air draft heat exchange machine unit in winter integrated form automatic defrosting; It is characterized in that; Before and after new air draft heat exchange unit (1), the air draft side heat exchanger (2) pressure difference switch (3) is set in the system; Bypass pipe (10) and switching mode Electric air valve (13) are set between fresh wind tube (8) and the ajutage (9); In new air side heat exchanger (11) back the antifreeze switch (12) that automatically resets is set, before and after new air draft heat exchange unit (1), the air draft side screen pack (14) pressure difference switch (15) is set; Signal feedback through pressure difference switch (3) is connected with signal controlling case (4), and signal controlling case (4) signal is closed down automatically and is connected to blower fan (5) and exhaust blower (6); Between fresh wind tube (8) and the ajutage (9) bypass pipe (10) is set; In new air side heat exchanger (11) back the antifreeze switch (12) that automatically resets is set.
2. the antifreeze operational system of new air draft heat exchange machine unit in winter integrated form automatic defrosting according to claim 1; It is characterized in that; Described antifreeze switch (12) signal feedback that automatically resets is connected to signal controlling case (4), and signal controlling case (4) circuit is connected with the switching mode Electric air valve (13) that is arranged at bypass pipe (10); Before and after new air draft heat exchange unit (1), the air draft side screen pack (14) switch (15) is set, feedback signal is connected to signal controlling case (4).
3. the antifreeze operational system of new air draft heat exchange machine unit in winter integrated form automatic defrosting according to claim 1; It is characterized in that; Described new air draft heat exchange unit (1) is connected with exhaust duct (16) exhaust outlet; Aluminium alloy lightweight airduct check-valves (17) is arranged on the exhaust duct (16), and electronic new air-valve (18) is arranged on the fresh wind tube (8).
4. the antifreeze operational system of new air draft heat exchange machine unit in winter integrated form automatic defrosting according to claim 1 is characterized in that, described integrated form signal controlling case (4) is hung wall and installed.
CN2012100633039A 2012-03-12 2012-03-12 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit Pending CN102589214A (en)

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CN2012100633039A CN102589214A (en) 2012-03-12 2012-03-12 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104791932A (en) * 2015-04-03 2015-07-22 西安工程大学 Evaporative cooling-mechanical refrigeration combination air conditioning unit provided with automatic control system
CN105135604A (en) * 2015-08-14 2015-12-09 珠海格力电器股份有限公司 Control method and control system for air conditioner
CN110762744A (en) * 2019-10-17 2020-02-07 宁波奥克斯电气股份有限公司 Automatic prompting method for cleaning filter screen, control device, storage medium and air conditioner
CN112373669A (en) * 2020-11-18 2021-02-19 江南造船(集团)有限责任公司 Ship fresh air supply system and method
CN112797521A (en) * 2020-12-31 2021-05-14 广东申菱环境系统股份有限公司 Indirect evaporative cooling device capable of preventing condensation and frosting
CN113418253A (en) * 2021-06-30 2021-09-21 深圳市英维克科技股份有限公司 Indoor environment temperature adjusting device, control method, computer device and medium
WO2022096036A1 (en) * 2021-06-01 2022-05-12 青岛海尔空调器有限总公司 Air conditioner and fresh air system

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CN201637037U (en) * 2010-03-05 2010-11-17 连云港杰瑞深软科技有限公司 Control device for air-conditioning unit
CN201803419U (en) * 2010-06-22 2011-04-20 方国明 Integrated type multi-connected cold and hot source central air-conditioning system
KR20110077702A (en) * 2009-12-30 2011-07-07 주식회사 애니텍 An air conditioning equipment for environmental-friendly energy saving
CN201926051U (en) * 2010-12-01 2011-08-10 宝钢发展有限公司 Air conditioner energy-saving operating device used in electric room in winter
CN202066135U (en) * 2010-12-27 2011-12-07 张永旺 Heat pipe type communications equipment room energy-saving air conditioning unit
CN202501684U (en) * 2012-03-12 2012-10-24 中国建筑东北设计研究院有限公司 Novel winter integrated automatic defrosting and anti-freezing operating device for air exhaust heat exchange unit

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CN201229030Y (en) * 2008-05-12 2009-04-29 泰豪科技股份有限公司 Air-conditioning unit with filter screen dirtying and blocking alarm device
KR20110077702A (en) * 2009-12-30 2011-07-07 주식회사 애니텍 An air conditioning equipment for environmental-friendly energy saving
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CN202066135U (en) * 2010-12-27 2011-12-07 张永旺 Heat pipe type communications equipment room energy-saving air conditioning unit
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104791932A (en) * 2015-04-03 2015-07-22 西安工程大学 Evaporative cooling-mechanical refrigeration combination air conditioning unit provided with automatic control system
CN104791932B (en) * 2015-04-03 2018-05-18 西安工程大学 Evaporation cooling with automatic control system-mechanical refrigeration joint air-conditioner set
CN105135604A (en) * 2015-08-14 2015-12-09 珠海格力电器股份有限公司 Control method and control system for air conditioner
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CN110762744A (en) * 2019-10-17 2020-02-07 宁波奥克斯电气股份有限公司 Automatic prompting method for cleaning filter screen, control device, storage medium and air conditioner
CN112373669A (en) * 2020-11-18 2021-02-19 江南造船(集团)有限责任公司 Ship fresh air supply system and method
CN112373669B (en) * 2020-11-18 2022-06-21 江南造船(集团)有限责任公司 Ship fresh air supply system and method
CN112797521A (en) * 2020-12-31 2021-05-14 广东申菱环境系统股份有限公司 Indirect evaporative cooling device capable of preventing condensation and frosting
WO2022096036A1 (en) * 2021-06-01 2022-05-12 青岛海尔空调器有限总公司 Air conditioner and fresh air system
CN113418253A (en) * 2021-06-30 2021-09-21 深圳市英维克科技股份有限公司 Indoor environment temperature adjusting device, control method, computer device and medium

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Application publication date: 20120718