CN109028542A - Heat exchanger for heat pump unit and the fresh air preheating system containing the heat exchanger - Google Patents
Heat exchanger for heat pump unit and the fresh air preheating system containing the heat exchanger Download PDFInfo
- Publication number
- CN109028542A CN109028542A CN201811015059.2A CN201811015059A CN109028542A CN 109028542 A CN109028542 A CN 109028542A CN 201811015059 A CN201811015059 A CN 201811015059A CN 109028542 A CN109028542 A CN 109028542A
- Authority
- CN
- China
- Prior art keywords
- heat
- fresh air
- pump unit
- heat exchanger
- heat pump
- 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.)
- Granted
Links
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- 239000002912 waste gas Substances 0.000 claims abstract description 17
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 9
- 239000003507 refrigerant Substances 0.000 claims abstract description 8
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 9
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The present invention provides a kind of heat exchanger for heat pump unit and a kind of fresh air preheating system containing the heat exchanger, heat exchanger includes airtight cavity and the insertion intracorporal bidirectional heat-exchanger device of closed chamber, the wall body of airtight cavity includes at least one piece of heat-exchanging component, heat-exchanging component includes multiple refrigerant pipes and multiple heat exchange fins, time of filtration is equipped between adjacent heat exchange fin, the wall body of airtight cavity is equipped with the first suction opening, bidirectional heat-exchanger device includes exhaust piping and fresh air pipeline, exhaust piping outside airtight cavity is equipped with exhaust gas inlet, the intracorporal exhaust piping of closed chamber is equipped with Waste gas outlet；Fresh air pipeline outside airtight cavity is equipped with the second suction opening, and the intracorporal fresh air pipeline of closed chamber is equipped with air inlet.The present invention can effectively solve the problem that the problems such as fresh air impurity is more, and humidity is larger, and air blower is easy failure, and heat utilization rate is not high in gas-fired heat pump unit full premix combustion system in the prior art.
Description
Technical field
The invention belongs to gas-fired heat pump unit full premix combustion system regions, especially a kind of heat exchange for heat pump unit
Device and fresh air preheating system containing the heat exchanger.
Background technique
Heat exchange is carried out usually using heat exchanger in gas-fired heat pump unit full premix combustion system, it is past in the prior art
Toward being directly sent in combustion chamber from extraction fresh air in atmosphere, the exhaust gas after burning is directly discharged into atmosphere more, due to big
Impurity is more in gas, and humidity is larger, and it is easy to appear failures when extracting fresh air for air blower, and the exhaust gas temperature after burning is very
Height, being directly discharged into atmosphere will cause very big energy waste.In addition the winters outside air temperature such as northeast it is very low place directly from
The new air temperature introduced in atmosphere is lower, will cause part combustion system component and freezes or even damage, directly affects heat pump unit
Normal work.Therefore it needs to provide a kind of heat exchanger for heat pump unit and the fresh air preheating system containing the heat exchanger, comes
Solve the above problem in the presence of the prior art.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of heat exchange for heat pump unit
Device and fresh air preheating system containing the heat exchanger are fired in gas-fired heat pump unit full premix combustion system in the prior art for solving
Exhaust gas is expelled directly out the problems such as heat utilization rate is not high after burning.
In order to achieve the above objects and other related objects, it is an aspect of the invention to provide include airtight cavity and
One insertion intracorporal bidirectional heat-exchanger device of closed chamber, the airtight cavity is surrounded by heat-exchanging component and wall body, described to change
Hot component is at least one, including multiple refrigerant pipes and the multiple heat exchange fins being arranged on the refrigerant pipe, Duo Gehuan
Be provided between hot fin fresh air can by gap, the bidirectional heat-exchanger device includes the exhaust piping that is set in together and new
The outside of the airtight cavity is arranged in one end of air piping, the exhaust piping and the fresh air pipeline, and the other end stretches to
The inside of the airtight cavity, be provided on the exhaust piping outside the airtight cavity exhaust gases after combustion can be introduced it is useless
Gas import is provided with the Waste gas outlet that exhaust gas can be discharged on the intracorporal exhaust piping of closed chamber, close to institute
State the first suction opening that is provided with and can be connected on the wall body of Waste gas outlet with suction unit；Outside the airtight cavity
It is provided with the second suction opening on the fresh air pipeline, is provided with air inlet on the intracorporal fresh air pipeline of closed chamber.
Preferably, first suction opening and the Waste gas outlet face.
Preferably, the outside of the fresh air pipeline is arranged in the exhaust piping, and the air inlet is arranged in the fresh air
The end of pipeline, the air inlet are pierced by from the exhaust piping.
Preferably, the inside of the fresh air pipeline is arranged in the exhaust piping, and the Waste gas outlet extend out to described
The outside of fresh air pipeline.
Preferably, the bottom of the heat exchange fin is provided with drainage trough.
Preferably, the plate face of the heat exchange fin is parallel and the gap of adjacent two heat exchange fin is 1.6mm-2mm.
Further, the gap is 1.8mm.
Further, multiple protrusions are provided in the plate face of the heat exchange fin, it is described on the fin of same gap two sides
Protrusion shifts to install.
Another aspect of the present invention is to provide a kind of heat pump unit fresh air preheating system comprising above-mentioned heat exchanger, further includes
Main air blower and breeze fan, the air inlet of the main air blower are connected with first suction opening, the exhaust outlet of the main air blower
It is connected with atmosphere, the air inlet of the breeze fan is connected with the second suction opening of the fresh air pipeline, the air-supply wind
The exhaust outlet of machine is connected with the fresh air inlet of heat pump unit combustion chamber.
Preferably, air cleaning unit is also equipped between the air inlet of the breeze fan and second suction opening.
As described above, the present invention is used for the heat exchanger of heat pump unit, have the advantages that exhaust gas is through close in the present invention
The intracorporal exhaust piping discharge of closed chamber, exhaust piping can carry out a heat exchange to the intracorporal fresh air air of closed chamber, when new
Wind air enters after fresh air pipeline and carries out with the exhaust gas being sleeved in the exhaust piping of fresh air pipeline either internally or externally secondary
Heat exchange can not only have been completed in the prior art in relation to the routine work to exchange heat using present invention heat exchanger, but also can apply to fresh air
Fresh air is filtered in system, dehumidify, is preheated.Fresh air air is inhaled in the gap between heat exchange fin in the present invention simultaneously
During entering, heat exchange fin can be filtered the impurity in fresh air air, filter out larger impurity in air, additionally, due to
Heat exchange fin temperature is far below environment temperature when unit is run, when air passes through, wherein the part vapor contained can condense
On fin, therefore it can reduce new wind moisture to achieve the purpose that dehumidifying.Heat pump unit fresh air preheating system benefit of the present invention
The service life of breeze fan is not only increased after present invention heat exchanger, and improves the fresh air air matter of full premix combustion needs
Amount, and fresh air can be preheated using exhaust gas, gas-fired heat pump machine is also improved while improving the utilization rate of heat energy from waste gas
The full premix combustion efficiency of group full premix combustion system.
Detailed description of the invention
Fig. 1 is three-dimensional figure of the present invention for the heat exchanger embodiments of heat pump unit；
Fig. 2 is the semi-cutaway of the embodiment of the present invention 1；
Fig. 3 is the partial enlarged view in the region I in Fig. 2；
Fig. 4 is the semi-cutaway of the embodiment of the present invention 2；
Fig. 5 is the three-dimensional schematic diagram of heat pump unit fresh air preheating system embodiment of the present invention.
In figure: 1, heat exchanger；2, main air blower；
3, breeze fan；4, air cleaning unit；
11, heat-exchanging component；111, heat exchange fin；
112, refrigerant pipe；113, time of filtration；
12, airtight cavity；13, end sealing plate；
14, bottom plate；15, top blind flange；
16, bidirectional heat-exchanger device；17, drainage trough；
151, the first suction opening；161/167, fresh air pipeline；
162/168, exhaust piping；163, exhaust gas inlet；
164, the second suction opening；165, Waste gas outlet；
166, air inlet；1111, protrusion；
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Meanwhile
Cited such as "upper", "lower", "front", "rear", " centre " term in this specification are merely convenient to being illustrated for narration, and
It is non-that to limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when
Also it is considered as the enforceable scope of the present invention.
Embodiment 1
As shown in Figure 1-3, the present embodiment provides a kind of heat exchanger 1 for heat pump unit, including an airtight cavity 12
The bidirectional heat-exchanger device 16 being inserted into airtight cavity 12 with one, airtight cavity 12 is by bottom plate 14,15, two pieces of top blind flange heat exchange
11, two blocks of end sealing plates 13 of component surround, and heat-exchanging component 11 includes multiple refrigerant pipes 112 and is arranged on refrigerant pipe 112
Multiple heat exchange fins 111, the plate face of multiple heat exchange fins 111 is parallel and adjacent two heat exchange fin 111 between be provided with energy
The time of filtration 113 of dust in air is enough filtered out, being provided in the top blind flange 15 of airtight cavity 12 can be with air extractor phase
First suction opening 151 of connection, bidirectional heat-exchanger device 16 include the exhaust piping 162 and fresh air pipeline of coaxial package together
161, the outside of airtight cavity 12 is arranged in one end of exhaust piping 162 and fresh air pipeline 161, and the other end stretches to airtight cavity
12 inside is provided with the exhaust gas inlet 163 that can introduce exhaust gases after combustion on the exhaust piping 162 outside airtight cavity, closed
The Waste gas outlet 165 that exhaust gas can be discharged is provided on the intracorporal exhaust piping 162 of chamber, close to Waste gas outlet 165
The first suction opening 151 that can be connected with suction unit is additionally provided on the wall body of airtight cavity 12；It is new outside airtight cavity 12
It is provided with the second suction opening 164 in air piping 161, is provided with air inlet 166 on the intracorporal fresh air pipeline 161 of closed chamber.It needs
Illustrate be in the present invention why close to Waste gas outlet 165 wall body on the first suction opening 151 is set, it is usually required mainly for will
Exhaust gas is in the intracorporal loss of closed chamber.
When work, under the suction of the first suction opening, fresh air air is from the inner suction of time of filtration 113 between heat exchange fin 111
Enter, heat exchange fin 111 can be filtered the impurity in fresh air air, larger impurity in air be filtered out, simultaneously because heat exchange
111 temperature of fin is far below environment temperature when unit is run, when fresh air air passes through, wherein the part vapor contained can be cold
It coagulates on heat exchange fin 111, therefore can reduce new wind moisture to achieve the purpose that dehumidifying.Setting in this heat exchanger 1 simultaneously
Have exhaust piping 162, exhaust gas is discharged through exhaust piping 162, exhaust piping 162 can to the fresh air air in airtight cavity 12 into
Heat exchange of row, after fresh air air enters fresh air pipeline 161 again be sleeved on either internally or externally useless of fresh air pipeline 161
Exhaust gas in feed channel 162 carries out secondary heat exchange, and related heat exchange in the prior art can have both been completed using present invention heat exchanger 1
Routine work, and can apply in fresh air system be filtered fresh air, dehumidify, preheat.
The surface of Waste gas outlet is arranged in the first suction opening 151 in the present embodiment.
The outside of fresh air pipeline 161 is arranged in exhaust piping 162 in the present embodiment, and air inlet 166 is arranged in fresh air pipeline
161 end, air inlet 166 extend out to the outside of exhaust piping 162.
Waste gas outlet is arranged on the outer wall of exhaust piping 162 in the present embodiment.
Multiple protrusions 1111 are provided in the plate face of the heat exchange fin 111 of the present embodiment, on the fin of same gap two sides
The protrusion 1111 shifts to install.When air passes through from time of filtration, since inertia can strike on protrusion 1111, thus
It is intercepted between heat exchange fin 111, filter effect is more preferably.
The bottom of heat exchange fin 111 is provided with drainage trough 17 in the present embodiment, and the droplet condensed from the air can be with
It is flowed down along heat exchange fin 111, and finally converges to outflow in drainage trough 17, avoid 1 bottom components of moisture corrosion heat exchanger.
(including 1.6mm and 2mm) can play filtering when through the time of filtration in the test present invention within the scope of 1.6-2mm
Effect, but be proven time of filtration system resistance and filter effect in 1.8mm and match more preferably, so, in the present embodiment
Time of filtration is 1.8mm.
Embodiment 2
As shown in Figure 1 and Figure 4, the present embodiment and embodiment 1 are different only in that exhaust piping 168 is set in the present embodiment
It sets in the inside of fresh air pipeline 167, air inlet is arranged on the side wall of the fresh air pipeline, and the Waste gas outlet is extend out to newly
The outside of air piping 167 is simultaneously bent towards first suction opening 151.
Embodiment 3
As shown in figure 5, the present embodiment provides a kind of heat pump unit fresh air preheating system comprising heat exchanger 1 in implementation 1,
It further include main air blower 2 and breeze fan 3, the air inlet of main air blower 2 is connected with the first suction opening 151, the exhaust outlet of main air blower 2
It is connected with atmosphere, the air inlet of breeze fan 3 is connected with the second suction opening of fresh air pipeline, the exhaust outlet of breeze fan 3
It is connected with the fresh air inlet of heat pump unit combustion chamber.In the present embodiment between the air inlet of breeze fan 3 and the second suction opening
It is also equipped with air cleaning unit 4.Heat exchanger 1 included in the present embodiment can both complete related heat exchange in the prior art
Routine work, and can apply in fresh air system be filtered fresh air, dehumidify, preheat.Not only increase breeze fan 3
Service life, and the fresh air air quality of full premix combustion needs is improved, and can preheat using exhaust gas to fresh air, it improves useless
The full premix combustion efficiency of gas-fired heat pump unit full premix combustion system is also improved while the utilization rate of gas thermal energy.
In conclusion fresh air preheating system of the present invention for the heat exchanger of heat pump unit and containing the heat exchanger, Neng Gouyou
Effect solves in the prior art that fresh air impurity is more in gas-fired heat pump unit full premix combustion system, and humidity is larger, and air blower is easy
Failure, exhaust gases after combustion are expelled directly out the problems such as heat utilization rate is not high.So the present invention effectively overcome it is in the prior art
Some practical problems are to have very high utility value and use meaning.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of heat exchanger for heat pump unit, which is characterized in that described closed including an airtight cavity and an insertion
The intracorporal bidirectional heat-exchanger device of chamber, the airtight cavity are surrounded by heat-exchanging component and wall body, and the heat-exchanging component is at least one,
Including multiple refrigerant pipes and the multiple heat exchange fins being arranged on the refrigerant pipe, fresh air is provided between multiple heat exchange fins
Can by gap, the bidirectional heat-exchanger device includes the exhaust piping and fresh air pipeline being set in together, the flue gas leading
The outside of the airtight cavity is arranged in one end of road and the fresh air pipeline, and the other end stretches to the interior of the airtight cavity
Portion is provided with the exhaust gas inlet that can introduce exhaust gases after combustion on the exhaust piping outside the airtight cavity, described closed
The Waste gas outlet that exhaust gas can be discharged is provided on the intracorporal exhaust piping of chamber, in the institute close to the Waste gas outlet
State the first suction opening that is provided with and can be connected on wall body with suction unit；It is set on the fresh air pipeline outside the airtight cavity
It is equipped with the second suction opening, is provided with air inlet on the intracorporal fresh air pipeline of closed chamber.
2. the heat exchanger according to claim 1 for heat pump unit, which is characterized in that first suction opening with it is described
Waste gas outlet face.
3. the heat exchanger according to claim 1 for heat pump unit, which is characterized in that the exhaust piping is arranged in institute
State the outside of fresh air pipeline, the air inlet is arranged in the end of the fresh air pipeline, and the air inlet is from the exhaust piping
It is pierced by.
4. the heat exchanger according to claim 1 for heat pump unit, which is characterized in that the exhaust piping is arranged in institute
The inside of fresh air pipeline is stated, the Waste gas outlet extend out to the outside of the fresh air pipeline.
5. the heat exchanger according to claim 1 for heat pump unit, which is characterized in that the bottom of the heat exchange fin is set
It is equipped with drainage trough.
6. the heat exchanger according to claim 1 for heat pump unit, which is characterized in that the plate face phase of the heat exchange fin
Gap parallel and adjacent to two heat exchange fins is 1.6mm-2mm.
7. the heat exchanger according to claim 6 for heat pump unit, which is characterized in that the gap is 1.8mm.
8. the heat exchanger according to claim 6 for heat pump unit, which is characterized in that in the plate face of the heat exchange fin
Multiple protrusions are provided with, the protrusion on the fin of same gap two sides shifts to install.
9. a kind of heat pump unit fresh air preheating system, which is characterized in that including heat exchange of any of claims 1-8
Device further includes main air blower and breeze fan, and the air inlet of the main air blower is connected with first suction opening, the air-supply wind
The air inlet of machine is connected with the second suction opening of the fresh air pipeline, and the exhaust outlet and heat pump unit of the breeze fan burn
The fresh air inlet of room is connected.
10. heat pump unit fresh air preheating system according to claim 9, which is characterized in that the air draught of the breeze fan
Air cleaning unit is also equipped between mouth and second suction opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015059.2A CN109028542B (en) | 2018-08-31 | 2018-08-31 | Heat exchanger for heat pump unit and fresh air preheating system comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811015059.2A CN109028542B (en) | 2018-08-31 | 2018-08-31 | Heat exchanger for heat pump unit and fresh air preheating system comprising same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109028542A true CN109028542A (en) | 2018-12-18 |
| CN109028542B CN109028542B (en) | 2024-01-19 |
Family
ID=64623278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811015059.2A Active CN109028542B (en) | 2018-08-31 | 2018-08-31 | Heat exchanger for heat pump unit and fresh air preheating system comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109028542B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738864A (en) * | 2022-03-10 | 2022-07-12 | 浙江弩牌电器有限公司 | Fan with cooling device |
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| CN205957356U (en) * | 2016-08-02 | 2017-02-15 | 苏州诚品家智能科技有限公司 | Fresh air dehumidification device |
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| CN208901612U (en) * | 2018-08-31 | 2019-05-24 | 山东奇威特太阳能科技有限公司 | Heat exchanger for heat pump unit and the fresh air preheating system containing the heat exchanger |
-
2018
- 2018-08-31 CN CN201811015059.2A patent/CN109028542B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100127917A (en) * | 2009-05-27 | 2010-12-07 | 신한열기 주식회사 | System for reclaiming waste heat from boiler |
| CN203259034U (en) * | 2013-02-06 | 2013-10-30 | 徐霆生 | Tube bundle heat exchanging unit and high dust gas heat exchanger |
| KR20140106261A (en) * | 2013-02-26 | 2014-09-03 | 주식회사 경동나비엔 | Combustion apparatus having air supply and exhaust gas heat exchanger |
| KR20140139642A (en) * | 2013-05-27 | 2014-12-08 | 전일염공(주) | Stainign of the dryer heat recovery unit |
| CN205957356U (en) * | 2016-08-02 | 2017-02-15 | 苏州诚品家智能科技有限公司 | Fresh air dehumidification device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114738864A (en) * | 2022-03-10 | 2022-07-12 | 浙江弩牌电器有限公司 | Fan with cooling device |
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| Publication number | Publication date |
|---|---|
| CN109028542B (en) | 2024-01-19 |
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