CN202501684U - Novel winter integrated automatic defrosting and anti-freezing operating device for air exhaust heat exchange unit - Google Patents

Novel winter integrated automatic defrosting and anti-freezing operating device for air exhaust heat exchange unit Download PDF

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Publication number
CN202501684U
CN202501684U CN2012200902149U CN201220090214U CN202501684U CN 202501684 U CN202501684 U CN 202501684U CN 2012200902149 U CN2012200902149 U CN 2012200902149U CN 201220090214 U CN201220090214 U CN 201220090214U CN 202501684 U CN202501684 U CN 202501684U
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China
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heat exchange
air draft
air
new air
switch
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CN2012200902149U
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Chinese (zh)
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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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Abstract

The utility model discloses a novel winter integrated automatic defrosting and anti-freezing operating device for an air exhaust heat exchange unit and relates to an air-conditioning operating system. The system comprises a heat exchanger unit for automatic defrosting, a fresh air bypass pipe and electric air valve for automatic control, an air exhaust side filtering net pressure difference automatic alarm and the like; an air exhaust heat exchanger of the novel air exhaust heat exchange unit is provided with a pressure difference switch; a bypass pipe and an electric air valve are arranged between a fresh air pipe and an air supply pipe; and an automatic reset anti-freezing switch is arranged behind a fresh air heat exchanger. According to the measures that the air exhaust filtering net unit is provided with the pressure difference switch and the like, the novel air exhaust heat exchange unit can normally operates in winter, the field installation is easy, convenient and rapid, the system is easy and flexible to operate, the initial cost is reduced, the operating cost is saved, automatic high-efficiency energy-saving operation is really realized, and the device is suitable for design of a central air-conditioning system.

Description

The new antifreeze running gear of air draft heat exchange machine unit in winter integrated form automatic defrosting
Technical field
The utility model relates to a kind of operation of air conditioner system, particularly relates to the antifreeze running gear 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 venomous injurants such as CO, CO2, formaldehyde, and 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 purpose of the utility model is to provide a kind of new air draft heat exchange machine unit in winter integrated form automatic defrosting antifreeze running gear; 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 purpose of the utility model realizes through following technical scheme:
The new antifreeze running gear 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 running gear 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 running gear 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 running gear 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.
The advantage and the effect of the utility model are:
1. the utility model reduces initial cost, practices thrift operating cost, and system's energy saving in running is reliable;
2. the utility model is really accomplished automatic operation, the manual manipulation strength of reduction personnel;
3. the on-the-spot simple installation of the utility model is quick, and system is simple to operate flexibly.
Description of drawings
Fig. 1 is the antifreeze running gear sketch map of the utility model air draft heat exchange unit integrated form automatic defrosting;
Fig. 2 is the utility model integrated form signal controlling case electrical schematic diagram.
The specific embodiment
With reference to the accompanying drawings the utility model 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 utility model 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.
In the utility model 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 running gear 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 running gear 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 running gear 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 running gear 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.
CN2012200902149U 2012-03-12 2012-03-12 Novel winter integrated automatic defrosting and anti-freezing operating device for air exhaust heat exchange unit Expired - Lifetime CN202501684U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589214A (en) * 2012-03-12 2012-07-18 中国建筑东北设计研究院有限公司 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit
CN104457066A (en) * 2014-10-27 2015-03-25 东南大学 Air source heat pump defrosting device based on multi-effect synthetic action at initial frosting stage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589214A (en) * 2012-03-12 2012-07-18 中国建筑东北设计研究院有限公司 Winter integrated automatic defrosting and anti-freezing operation system of new air exhaust heat exchange unit
CN104457066A (en) * 2014-10-27 2015-03-25 东南大学 Air source heat pump defrosting device based on multi-effect synthetic action at initial frosting stage
CN104457066B (en) * 2014-10-27 2017-02-15 东南大学 Air source heat pump defrosting device based on multi-effect synthetic action at initial frosting stage

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