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 PDFInfo
- 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
- Authority
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/002—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an intermediate heat-transfer fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
Landscapes
- 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
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764293.XA CN106288224A (en) | 2016-08-29 | 2016-08-29 | The antifrost heat recovery system of new wind outside a kind of preheating chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610764293.XA CN106288224A (en) | 2016-08-29 | 2016-08-29 | The antifrost heat recovery system of new wind outside a kind of preheating chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106288224A true CN106288224A (en) | 2017-01-04 |
Family
ID=57675502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610764293.XA Pending CN106288224A (en) | 2016-08-29 | 2016-08-29 | The antifrost heat recovery system of new wind outside a kind of preheating chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106288224A (en) |
Cited By (5)
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634362Y (en) * | 2003-08-04 | 2004-08-18 | 无锡沙漠除湿设备厂 | Horizontal rotary wheel heat recovering device |
| KR100778971B1 (en) * | 2006-09-29 | 2007-11-23 | 지에스건설 주식회사 | Air condensing system for preventing generation of condensed water and method thereof |
| CN102692061A (en) * | 2012-06-26 | 2012-09-26 | 湖南工业大学 | Fresh air machine of solar intelligent type semiconductor refrigeration air conditioner |
| CN203413762U (en) * | 2013-08-09 | 2014-01-29 | 苟仲武 | Heat recovery heating air inlet/exhaust system |
| CN203893353U (en) * | 2014-06-21 | 2014-10-22 | 吉林省新技节能服务有限公司 | Air handling system with heat recovery and preheating function |
| CN205137783U (en) * | 2015-11-25 | 2016-04-06 | 天津市第五季环境科技有限公司 | Novel new fan of suspension type |
-
2016
- 2016-08-29 CN CN201610764293.XA patent/CN106288224A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2634362Y (en) * | 2003-08-04 | 2004-08-18 | 无锡沙漠除湿设备厂 | Horizontal rotary wheel heat recovering device |
| KR100778971B1 (en) * | 2006-09-29 | 2007-11-23 | 지에스건설 주식회사 | Air condensing system for preventing generation of condensed water and method thereof |
| CN102692061A (en) * | 2012-06-26 | 2012-09-26 | 湖南工业大学 | Fresh air machine of solar intelligent type semiconductor refrigeration air conditioner |
| CN203413762U (en) * | 2013-08-09 | 2014-01-29 | 苟仲武 | Heat recovery heating air inlet/exhaust system |
| CN203893353U (en) * | 2014-06-21 | 2014-10-22 | 吉林省新技节能服务有限公司 | Air handling system with heat recovery and preheating function |
| CN205137783U (en) * | 2015-11-25 | 2016-04-06 | 天津市第五季环境科技有限公司 | Novel new fan of suspension type |
Non-Patent Citations (2)
| Title |
|---|
| 罗清海: "《建筑节能与可持续发展》", 31 December 2012 * |
| 陆亚俊: "《暖通空调(第二版》", 30 November 2007 * |
Cited By (7)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106288224A (en) | The antifrost heat recovery system of new wind outside a kind of preheating chamber | |
| CN103727714B (en) | A kind of defrost system of Teat pump boiler and control method thereof | |
| CN101986075B (en) | Method for providing dry hot air for industrial dehumidifying and drying | |
| CN103629863B (en) | A kind of refrigeration system, device and method | |
| CN205537192U (en) | Heating cycle protection system is split to automatic preventing frostbite of closed cooling tower | |
| CN203671820U (en) | Air source integrated central air conditioner | |
| CN205090501U (en) | Air conditioning unit system | |
| CN105843291B (en) | A kind of one-storey house silo heat dissipation temperature control system based on hot pipe technique | |
| CN205825424U (en) | A kind of air energy high-temperature heat-pump water-heater | |
| CN203837359U (en) | Refrigerant heater and air source high-temperature heat pump | |
| CN104456838B (en) | The cooling treatment system and method for computer room return air | |
| CN206338898U (en) | A kind of double-cold source fresh air handling unit with recuperation of heat | |
| CN202853011U (en) | Total heat recovery type heating humidifying fresh air handling unit | |
| CN206037336U (en) | Frost -proof heat recovery system of outer new trend of preheating chamber | |
| CN206222814U (en) | A kind of power saving refrigerator recuperation of heat utilizes equipment | |
| CN206532160U (en) | A kind of one-storey house silo radiating temperature control system based on hot pipe technique | |
| CN106440281A (en) | Total heat exchanger and frost prevention and removal system thereof | |
| CN205619621U (en) | Air can transducer | |
| CN203518099U (en) | Outdoor direct anti-freezing cold-taking device used in cold seasons | |
| CN104214914A (en) | Heat recovery type air conditioning unit in cold region | |
| CN102914000A (en) | Fresh air humidification air-conditioning unit | |
| CN205642125U (en) | Closed cooling tower prevents frostbite and splits protection system | |
| CN206247725U (en) | A kind of cold temperature control system of liquid of achievable warm area natural cooling wide | |
| CN205048747U (en) | Solar water -heating feeding device | |
| CN203323270U (en) | Heat recovery solution heating and humidifying air handling unit based on external lower-temperature heat source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170104 |