CN106288224A - The antifrost heat recovery system of new wind outside a kind of preheating chamber - Google Patents

The antifrost heat recovery system of new wind outside a kind of preheating chamber Download PDF

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Publication number
CN106288224A
CN106288224A CN201610764293.XA CN201610764293A CN106288224A CN 106288224 A CN106288224 A CN 106288224A CN 201610764293 A CN201610764293 A CN 201610764293A CN 106288224 A CN106288224 A CN 106288224A
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CN
China
Prior art keywords
heat exchanger
antifrost
heat
new wind
recovery system
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
Application number
CN201610764293.XA
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Chinese (zh)
Inventor
宋孟杰
陈颖
郑晓生
廖立元
黄文毅
罗向龙
廉迎战
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Guangdong University of Technology
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Guangdong University of Technology
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Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201610764293.XA priority Critical patent/CN106288224A/en
Publication of CN106288224A publication Critical patent/CN106288224A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F24F12/002Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

The antifrost heat recovery system of new wind outside a kind of preheating chamber provided by the present invention, including fresh air channel, air exhaust passage, center heat exchanger plates and antifrost system.Outdoor new wind enters fresh air channel from new wind entrance, indoor exhaust wind enters air exhaust passage from air draft entrance, circulating pump promotes the heat-exchange working medium flowing in heat exchanger, the relatively outdoor new air temperature of indoor exhaust wind temperature is higher, it is capable of the enhanced heat exchange of indoor exhaust wind and the new wind in outdoor by heat exchanger, thus improves the temperature of outdoor new wind contact center heat exchanger plates.Instant invention overcomes and prior art consumes additional energy to heat new wind, by the closed circuit of the heat exchanger that air draft entrance and new wind entrance are arranged, new wind is preheated by the heat utilizing air draft, solve by the new air temperature in outdoor too low and cause the problem of air heat exchange passage frosting, be effectively improved the heat exchange efficiency of whole system.

Description

The antifrost heat recovery system of new wind outside a kind of preheating chamber
Technical field
The invention belongs to air antifrost technical field, particularly to the antifrost recuperation of heat system of wind new outside a kind of preheating chamber System.
Background technology
Air-air heat recovery system has as indoor ventilation equipment to be improved indoor air quality and reduces energy consumption etc. Advantage, but remain at the biggest obstacle in the application of severe cold and cold district at present, owing to outdoor temperature is low, indoor humidity is high, Heat-exchange device in heat recovery system there may be frosting problem in various degree.If frost accumulated is removed not in time, will blocking Air heat exchange passage also reduces heat transfer area so that air flow resistance significantly increases, and heat exchange thermal resistance significantly increases, and causes sky Gas-air heat recovery system overall performance declines.
In the equipment the most similar to the present invention, mostly by sides such as external preheater preheating or electric heated defrostings Method, but need to consume extra energy (electric energy or heat energy) and heat new wind, therefore reduce whole system heat reclamation device Efficiency.
Secondly as lack the effective monitoring to frosting, it is impossible to prevent frosting, can only defrost after frosting occurs, Also system thermal recovery system overall performance is caused to decline.
Summary of the invention
The invention aims to overcome consumption additional energy in prior art to heat new wind, to utilize air exhaust waste heat pair New wind preheats, thus is effectively increased the heat exchange efficiency of whole system.
For solving above-mentioned technical problem, the antifrost heat recovery system of new wind, bag outside a kind of preheating chamber that the present invention provides Include fresh air channel, air exhaust passage and center heat exchanger plates, also include that antifrost system, described antifrost system include being arranged on described The new wind entrance of fresh air channel and the air draft entrance of described air exhaust passage and for the heat exchanger of closed circulation and promote institute State the circulating pump of heat-exchange working medium flowing in heat exchanger.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described heat exchanger is arranged on described row Wind entrance and the wall of described new wind entrance and install away from described center heat exchanger plates.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, also include: temperature sensor, be used for Detect the temperature at the heat exchanger plates of described center;Controller, when described temperature is less than the minimum of preset temperature range, described control Device processed controls described circulating pump and opens.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, in described temperature higher than preset temperature During the peak of scope, described controller controls described circulating pump and stops.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described temperature sensor is thermocouple.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described temperature sensor is uniformly installed Air draft side at described center heat exchanger plates.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, the quantity of described temperature sensor is 9 Individual.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described preset temperature range is 2-5 ℃。
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described heat exchanger is serpentine coil.
Preferably, outside above-mentioned preheating chamber in the antifrost heat recovery system of new wind, described heat-exchange working medium is ethylene glycol water Solution.
Relative to background technology, the antifrost heat recovery system of new wind outside a kind of preheating chamber provided by the present invention, including Fresh air channel, air exhaust passage, center heat exchanger plates and antifrost system.Outdoor new wind enters fresh air channel from new wind entrance, indoor Air draft enters air exhaust passage from air draft entrance, and circulating pump promotes the heat-exchange working medium flowing in heat exchanger, and indoor exhaust wind temperature is relative Outdoor new air temperature is higher, is capable of the enhanced heat exchange of indoor exhaust wind and the new wind in outdoor by heat exchanger, thus improves outdoor The temperature of new wind contact center heat exchanger plates.Instant invention overcomes in prior art consume additional energy to heat new wind, by row The closed circuit of the heat exchanger that wind entrance and new wind entrance are arranged, utilizes the heat of air draft to preheat new wind, solve by Outdoor new air temperature is too low and causes the problem of air heat exchange passage frosting, is effectively improved the heat exchange effect of whole system Rate.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 is the antifrost heat recovery system of new wind outside a kind of preheating chamber provided by the present invention;
Fig. 2 is the layout schematic diagram of center provided by the present invention heat exchanger plates temperature sensor;
Fig. 3 is automatic control system schematic diagram provided by the present invention;
Fig. 4 is the partial view of serpentine coil provided by the present invention.
In figure 1 above-4:
Air draft entrance 1, wind exhausting outlet 2, exhaust blower 3, temperature sensor 4, center heat exchanger plates 5, controller 6,7, new wind enters Mouth 8, pressure fan 9, new wind outlet 10, circulating pump 11.
Detailed description of the invention
The invention aims to overcome consumption additional energy in prior art to heat new wind, to utilize air exhaust waste heat pair New wind preheats, thus is effectively increased the heat exchange efficiency of whole system.
In order to make those skilled in the art be more fully understood that the technical scheme that the present invention provides, below in conjunction with accompanying drawing and The present invention is described in further detail for specific embodiment.
Refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the invention provides the antifrost recuperation of heat system of new wind outside a kind of preheating chamber System, including fresh air channel, air exhaust passage, center heat exchanger plates 5 and antifrost system.The new wind entrance 8 of fresh air channel is new with outdoor Wind connects, and the air draft entrance 1 of air exhaust passage connects with indoor exhaust wind, and air draft is discharged from wind exhausting outlet 2 after waste heat recovery.For Fresh air channel can be loaded pressure fan 9 by the circulation of promotion air, and air exhaust passage loads exhaust blower 3.Fresh air channel and air draft are led to Heat exchanger plates 5 centered by the channel wall of fitting part between road.Antifrost system includes being arranged on air draft entrance 1 and new wind entrance 8 and be the heat exchanger 7 of closed circulation and promote the circulating pump 11 of heat-exchange working medium flowing in heat exchanger 7.
In flow process, circulating pump 11 promotes the heat-exchange working medium in heat exchanger 7 to flow, and indoor exhaust wind temperature is the most outdoor New air temperature is higher, is capable of the enhanced heat exchange of indoor exhaust wind and the new wind in outdoor by heat exchanger 7, thus improves outdoor new wind The temperature of contact center heat exchanger plates 5.Relative to prior art, the present invention solves owing to the new air temperature in outdoor is too low and cause sky The problem of gas hot switching path air draft side surface frosting, and the circulation of the heat exchanger arranged by air draft entrance and new wind entrance Loop, new wind is preheated by the heat being sufficiently used air draft, is effectively improved the heat exchange efficiency of whole system.
Further, heat exchanger 7 could be arranged to be arranged on air draft entrance 1 and the wall of new wind entrance 8, and away from heat exchanger Center heat exchanger plates 5 install, its position can reduce the disturbance to center heat exchanger plates 5 and to fresh air channel and air exhaust passage The pressure drop of airduct, Local map is as shown in Figure 4.
Heat exchanger 7 can be serpentine coil, relatively large relative to the heating surface area of other pipelines, engineering uses wide General.The glycol water freezing point that mass concentration can be used to be 50% in heat exchanger 7 for about-33.8 DEG C as heat transfer medium, Glycol water, as the low anti-icing fluid of a kind of freezing point, can effectively avoid heat transfer medium to freeze under severe cold operating mode and affect The normal work of system.
Waste heat in air draft is stored in glycol water by the heat exchanger 7 of air draft entrance 1, by circulating pump 11 by temperature Spend higher glycol water to transport to the heat exchanger 7 of new wind entrance 8, new wind is preheated, eventually passes back to air draft and enter In the heat exchanger 7 of mouth 1, circulate and so forth.
Further, antifrost heat recovery system also includes temperature sensor 4 and controller 6.
System temperature is monitored by temperature sensor 4 in real time, pre-antifrost from source so that control has advanced Property.The temperature sensor 4 temperature at inspection center's heat exchanger plates 5, it is achieved heat exchanging central plate 5 is monitored in real time, and will This temperature signal immediate feedback is to controller 6.
Center heat exchanger plates 5 is provided with the preset temperature range opening and closing defrosting state, including minimum and peak. Controller 6 is when the temperature of center heat exchanger plates 5 is less than the minimum of preset temperature range, and controller 6 controls circulating pump 11 and opens. The temperature of perception center heat exchanger plates 5, is transformed into temperature signal the signal of telecommunication and is sent to temperature controller 12.Temperature controller 12 According to the feedback signal of thermocouple, when the temperature at center heat exchanger plates 5 reaches the preset temperature range within program, ON cycle pump 11.When temperature is higher than the peak of preset temperature range, controller 6 controls circulating pump 11 and stops.
After circulating pump 11 starts, heat-exchange working medium initially enters the heat exchanger 7 at air draft entrance 1, flow direction and air draft wind To forming adverse current, enhanced heat exchange, the air draft that temperature is higher carries out sufficient heat exchange, absorbs the heat in air draft, and temperature raises, Being delivered to the heat exchanger 7 at new wind entrance 8 by circulating pump 11 again, outdoor new wind relatively low with temperature in the heat exchanger 7 is carried out Heat exchange, flow direction forms adverse current with new wind wind direction, comes back to the heat exchanger at air draft entrance 1 after improving the temperature of new wind In 7, continue to absorb air exhaust waste heat, circulate and so forth, until the highest to preset temperature range of center heat exchanger plates 5 temperature recovery During value, controller 6 cuts off the power supply of circulating pump 11, and antifrost heat regenerative system quits work.Treat that temperature sensor 4 detects center When the temperature of heat exchanger plates 5 is less than the minimum of preset temperature range, antifrost heat regenerative system restarts.
Specifically, temperature sensor 4 can be thermocouple, and its quantity can be 9.Temperature sensor 4 is uniformly arranged on The air draft side of center heat exchanger plates 5.Fig. 2 is when the distribution situation that temperature sensor quantity is 9 being arranged on the heat exchanger plates of center.9 The temperature probe of individual temperature sensor 4 is evenly spaced on center heat exchanger plates 5.The layout rule of temperature sensor 4 is as follows: in Jiang Heart heat exchanger plates 5 is divided into 3 row 3 and arranges the rectangle that totally 9 shapes are identical, arranges temperature sensor 4 in the center of each rectangle, arranges The temperature probe of 9 temperature sensors 4 can preferably take into account the temperature of center heat exchanger plates 5 central temperature and surrounding thereof, more entirely The distribution situation of ground, face reflection heat exchanger plates temperature, improves the control accuracy of system.
On the whole, the antifrost heat recovery system of new wind outside a kind of preheating chamber provided by the present invention, can not only profit With self air exhaust waste heat, new wind is preheated, overcome and prior art consumes additional energy to heat new wind, moreover it is possible to by temperature Degree sensor is monitored in real time, pre-antifrost from source so that control has advanced, ultimately provides a kind of automatization Degree is high, be concisely and efficiently antifrost heat recovery system.
Above the antifrost heat recovery system of wind new outside a kind of preheating chamber provided by the present invention is described in detail. Principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is simply used In helping to understand method and the core concept thereof of the present invention.It should be pointed out that, for those skilled in the art, Under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these improve and modify also Fall in the protection domain of the claims in the present invention.

Claims (10)

1. an antifrost heat recovery system for new wind outside preheating chamber, including fresh air channel, air exhaust passage and center heat exchanger plates (5), it is characterised in that also include that antifrost system, described antifrost system include that the new wind being arranged on described fresh air channel enters Mouthful (8) and the air draft entrance (1) of described air exhaust passage and be the heat exchanger (7) of closed circulation and promote described heat exchanger (7) circulating pump (11) of interior heat-exchange working medium flowing.
Antifrost heat recovery system the most according to claim 1, it is characterised in that described heat exchanger (7) is arranged on described Air draft entrance (1) and the wall of described new wind entrance (8) and install away from described center heat exchanger plates (5).
Antifrost heat recovery system the most according to claim 1, it is characterised in that also include:
Temperature sensor (4), is used for detecting the temperature at heat exchanger plates (5) place, described center;
Controller (6), when described temperature is less than the minimum of preset temperature range, described controller (6) controls described circulation Pump (11) is opened.
Antifrost heat recovery system the most according to claim 3, it is characterised in that in described temperature higher than preset temperature model During the peak enclosed, described controller (6) controls described circulating pump (11) and stops.
Antifrost heat recovery system the most according to claim 3, it is characterised in that described temperature sensor (4) is thermoelectricity Even.
6. according to the antifrost heat recovery system described in any one in claim 3-5, it is characterised in that described temperature sensing Device (4) is uniformly arranged on the air draft side at described center heat exchanger plates (5).
7. according to the antifrost heat recovery system described in any one in claim 3-5, it is characterised in that described temperature sensing The quantity of device (4) is 9.
8. according to the antifrost heat recovery system described in any one in claim 3-5, it is characterised in that described preset temperature Scope is 2-5 DEG C.
Antifrost heat recovery system the most according to claim 1, it is characterised in that described heat exchanger (7) is serpentine coil.
Antifrost heat recovery system the most according to claim 1, it is characterised in that described heat-exchange working medium is ethylene glycol water Solution.
CN201610764293.XA 2016-08-29 2016-08-29 The antifrost heat recovery system of new wind outside a kind of preheating chamber Pending CN106288224A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108954746A (en) * 2018-08-10 2018-12-07 机械工业第六设计研究院有限公司 Exposure degree formula fresh air preheating defroster
CN111314664A (en) * 2020-03-06 2020-06-19 易道群 Heat recovery defogging type intelligent security monitoring equipment based on curved bar ventilation
CN111678278A (en) * 2020-06-24 2020-09-18 西安建筑科技大学 Preheating type air source heat pump frost inhibition system and method
CN114111002A (en) * 2021-11-29 2022-03-01 珠海格力电器股份有限公司 Heat recovery assembly, air conditioning system and control method of air conditioning system
CN114198845A (en) * 2021-12-20 2022-03-18 珠海格力电器股份有限公司 Fresh air equipment

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108954746A (en) * 2018-08-10 2018-12-07 机械工业第六设计研究院有限公司 Exposure degree formula fresh air preheating defroster
CN111314664A (en) * 2020-03-06 2020-06-19 易道群 Heat recovery defogging type intelligent security monitoring equipment based on curved bar ventilation
CN111314664B (en) * 2020-03-06 2021-03-26 深圳市兴海机电工程有限公司 Heat recovery defogging type intelligent security monitoring equipment based on curved bar ventilation
CN111678278A (en) * 2020-06-24 2020-09-18 西安建筑科技大学 Preheating type air source heat pump frost inhibition system and method
CN114111002A (en) * 2021-11-29 2022-03-01 珠海格力电器股份有限公司 Heat recovery assembly, air conditioning system and control method of air conditioning system
CN114198845A (en) * 2021-12-20 2022-03-18 珠海格力电器股份有限公司 Fresh air equipment
CN114198845B (en) * 2021-12-20 2023-02-24 珠海格力电器股份有限公司 Fresh air equipment

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Application publication date: 20170104