KR20140051760A - Environmental-friendly heat exchanger - Google Patents

Environmental-friendly heat exchanger Download PDF

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Publication number
KR20140051760A
KR20140051760A KR1020130056160A KR20130056160A KR20140051760A KR 20140051760 A KR20140051760 A KR 20140051760A KR 1020130056160 A KR1020130056160 A KR 1020130056160A KR 20130056160 A KR20130056160 A KR 20130056160A KR 20140051760 A KR20140051760 A KR 20140051760A
Authority
KR
South Korea
Prior art keywords
heat exchange
heat exchanger
tube
heat
exchange tube
Prior art date
Application number
KR1020130056160A
Other languages
Korean (ko)
Inventor
김태영
Original Assignee
(주)귀뚜라미
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by (주)귀뚜라미 filed Critical (주)귀뚜라미
Publication of KR20140051760A publication Critical patent/KR20140051760A/en
Priority to PCT/KR2014/004468 priority Critical patent/WO2014189244A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0035—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for domestic or space heating, e.g. heating radiators

Abstract

The present invention relates to an environmentally friendly heat exchanger capable of suppressing the generation of carbon monoxide by gradually decreasing the temperature of combustion gas passing through a heat exchanger which is structurally improved. Moreover, the present invention relates to an environmentally friendly heat exchanger capable of preventing the overheating and deformation of the heat exchanger, and which is capable of reducing the overall size. In addition, the present invention relates to an environmentally friendly heat exchanger which is capable of increasing the effectiveness of regeneration and reducing impact damages or noise generation due to water hammering by optimizing the form of a U-shaped joint pipe which interconnects heat exchanging pipes.

Description

{Environmental-friendly heat exchanger}

The present invention relates to an environmentally friendly heat exchanger, and more particularly, to an environmentally friendly heat exchanger for reducing carbon monoxide generation by gently lowering the temperature of a combustion gas passing through a heat exchanger through a structure improvement of the heat exchanger.

The present invention also relates to an environment-friendly heat exchanger capable of preventing overheating and deformation of the heat exchanger and reducing the overall size thereof.

Further, the present invention relates to an environment-friendly heat exchanger which improves the shape of a 'U' -shaped connection pipe connecting heat exchange tubes to each other to thereby reduce the occurrence of breakage or noise due to water impact while increasing the heat exchange rate.

The heat exchanger makes heat transfer by crossing the heating fluid and the heating fluid having different temperatures from each other, and is widely used for heating, air conditioning, power generation, cooling and waste heat recovery in various heating and cooling apparatuses including a boiler and an air conditioner. Is used.

Particularly, as shown in FIG. 1, the condensing boiler uses a sensible heat exchanger 1 for performing sensible heat exchange with a flame and a combustion gas generated when the fuel is burned, and a latent heat exchanger 2 for performing latent heat heat exchange with the combustion gas.

However, in the conventional sensible heat exchanger 1 as described above, heat exchange fins (heat exchange fins) 3 are provided in all of the plurality of sensible heat exchange pipes stacked vertically, so that the temperature gradient of the combustion chamber inside the sensible heat exchanger 1 rapidly Descend.

That is, when the flame and the high-temperature combustion gas generated in the burner 8 pass through the sensible heat exchanger 1, heat is rapidly taken away by the heat exchange pin 3 of the sensible heat exchange pipe, and the temperature rapidly falls.

Accordingly, there is a problem that not only the human body is harmed when leaking into the room, but also the amount of carbon monoxide (CO), which is a main cause of environmental pollution, increases.

In the conventional sensible heat exchanger 1 as described above, the heat exchanger body is overheated by the high-temperature flame and the combustion gas generated in the burner 8. When the heat exchanger body is overheated, the sensible heat exchanger 1 is deformed There is a problem that a failure occurs.

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above-mentioned problems, and it is an object of the present invention to improve the structure of a heat exchanger to gently lower the temperature of a combustion gas passing through a heat exchanger to suppress generation of carbon monoxide, Friendly heat exchanger that reduces the overall size of the U-shaped connector and prevents damage or noise caused by water impact in the U-shaped connector.

To this end, the eco-friendly heat exchanger according to the present invention includes a plurality of first heat exchange tubes installed in a heat exchanger body, and a plurality of second heat exchange tubes and an eco-friendly heat exchanger that circulates water through the plurality of second heat exchange tubes and the third heat exchange tubes, Wherein the heat exchanger body comprises a front / rear / left / right side plate; The first heat exchange tubes are connected to each other in the zigzag direction through the left and right side plates and the heat exchange fins are assembled to the outer periphery of the left and right side plates and the second heat exchange tubes are connected to each other in the zigzag direction through the left and right side plates, The third heat exchanger tube is installed along the inner circumferential surface of the heat exchanger body and supports the inner circumferential surface of the heat exchanger body.

At this time, the first heat exchange tube having the heat exchange fin is installed in the lower part of the body of the heat exchanger so as to be installed at a position distant from the direction of supplying the hot heat source, and the second heat exchange tube without the heat exchange fin, And the heat exchange tube is installed in the remaining portion of the heat exchanger body where the first heat exchange tube is not installed.

Preferably, the second heat exchange tube is disposed on the upper portion of the first heat exchange tube, and the third heat exchange tube is disposed on the upper portion of the second heat exchange tube.

It is preferable that the first heat exchange tube and the second heat exchange tube are fixed to the left and right side plates by welding and the outlet port of the third heat exchange tube is fixed to the front side plate by welding.

Further, it is preferable that the contact tube further includes a contact tube which is installed in contact with the inner surface of the front / rear side plate, and the contact tube is connected to the second heat exchange tube so that water flows through the contact tube.

Further, it is preferable that an insulating plate is inserted into the inner side surfaces of the left and right side plates.

Further, the inner circumferential surface of the left / right side plate into which the heat insulating plate is inserted is provided with an embossed portion protruding inwardly in contact with the heat insulating plate, thereby forming a heat insulating space between the left / right side plate and the heat insulating plate.

The first heat exchange pipe is an oval pipe having an elliptical cross section, and the 'U' -shaped pipe connecting the ends of the two obtuse pipes includes a straight portion and a curved portion, and the 'U' The length of the straight portion of the connecting pipe is preferably 10 mm or more and 15 mm or less.

The height of the U-shaped connecting pipe is preferably 30.5 mm or more and 35.5 mm or less.

Also, it is preferable that the long axis outer diameter of the U-shaped connecting pipe is 26 mm or more and 29 mm or less, and the uniaxial outer diameter of the U-shaped connecting pipe is 13 mm or more and 16 mm or less.

According to the present invention, the first to third heat exchanger tubes of different types are adopted as the heat exchanger tubes and the installation structure thereof is improved, so that the temperature gradient inside the heat exchanger gently drops and the generation of carbon monoxide is suppressed.

In addition, the present invention prevents the deformation of the heat exchanger by fixing the first heat exchanger tube and the second heat exchanger tube to the side plate of the heat exchanger body while supporting the inner side surface of the heat exchanger body with the third heat exchanger tube.

The present invention also prevents deformation of the heat exchanger body by preventing the heat exchanger body from being overheated by using the contact tube, the heat insulating plate, and the heat insulating space.

In addition, when the off-pipe is used as the first heat exchange pipe, the shape of the 'U' -shaped pipe connecting them is optimized so that the heat exchange rate can be increased and the occurrence of breakage or noise due to water impact can be reduced.

1 is a cross-sectional view of a condensing boiler employing a conventional heat exchanger.
2 is a perspective view of an environment-friendly heat exchanger according to the present invention.
3 is a view showing a water circulation state of the environment-friendly heat exchanger according to the present invention.
4 is a bottom view and an AA cross-sectional view of the environmentally friendly heat exchanger according to the present invention.
5 is a front view and a BB sectional view of the environment-friendly heat exchanger according to the present invention.
6 is a view showing a 'U' -shaped connection pipe of an environmentally friendly heat exchanger according to the present invention.

Hereinafter, an environment-friendly heat exchanger according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

In the following description, the direction in which the burner is installed is set to the upper side and the opposite side is set to the lower side, but it is obvious that the vertical direction can be changed depending on the installation position of the burner.

In the following description, the body of the heat exchanger is divided into the front / rear / left / right side plates, but it is obvious that the front / rear / left / right directions can be changed depending on the viewing angle.

In the following description, the inlet and outlet are specified, but it is obvious that if the flow of water is changed by a design change, the inlet may be the outlet and the outlet may be the inlet.

2 and 3, the environment-friendly heat exchanger according to the present invention includes a heat exchanger body 110, a first heat exchange tube 120, a second heat exchange tube 130, And a third heat exchange tube (140).

At this time, the first heat exchange tube 120, the second heat exchange tube 130, and the third heat exchange tube 140 are connected to each other so that water flows sequentially. The water is supplied through the inlet IN and discharged through the outlet OUT.

FIG. 3 shows the flow of water along the first heat exchange tube 120, the second heat exchange tube 130 and the third heat exchange tube 140. The water supplied to the inlet (IN) flows in the same order as the displayed number and then exits to the outlet (OUT).

The upper and lower portions of the heat exchanger body 110 are opened so that the flame and the high-temperature combustion gas (i.e., heat source) provided in the upper portion of the heat exchanger body 110 pass through the heat exchanger body 110 from the upper side to the lower side .

Accordingly, heat is exchanged between the water circulating through the first heat exchanging tube 120, the second heat exchanging tube 130, and the third heat exchanging tube 140, and the hot heat source to heat the water .

Here, the heat exchanger body 110 is composed of front / rear / left / right side plates F, B, L and R. [ Surrounded by the front / rear / left / right side panels (F, B, L, R), the side portions are closed and the upper and lower portions are opened.

Thus, if a burner is installed on top of the heat exchanger body 110, flame and hot combustion gases from the burner pass downward from the top of the open heat exchanger body 110.

The first heat exchange tube 120 and the second heat exchange tube 130 and the third heat exchange tube 140 are provided on the left side plate L and the right side plate R facing each other, Is installed.

The front side plate F and the rear side plate B are provided with contact tubes 111 along the longitudinal direction of the side plates F and B, respectively. For example, the contact tube 111 is connected to the second heat exchange tube 130 so that water flows through the contact tube 111 as well.

The contact tube 111 may be formed integrally with the front side plate F and the rear side plate B or may be attached to the front side plate F and the rear side plate B after forming a separate pipe.

If the contact tube 111 is further included, the water flowing through the inside of the contact tube 111 absorbs heat, thereby increasing the heat exchange rate, preventing the heat exchanger body 110 from being overheated and deforming the heat exchanger body 110 due to overheating. prevent.

As shown in Fig. 4 (b) showing the A-A cross section in Fig. 4 (a), the heat insulating plate 112 is inserted into the inner side surfaces of the left side plate L and the right side plate R. When the heat insulating plate 112 is inserted, direct heat is prevented from being transmitted to the heat exchanger body 110, thereby preventing deformation of the heat exchanger body 110 due to overheating.

The inner circumferential surfaces of the left side plate L and the right side plate R in which the heat insulating plate 112 is inserted are each provided with an embossing portion 113 protruding inwardly and in contact with the heat insulating plate 112.

When the embossed portion 113 is present, a heat insulating space is formed between the left side plate L and the heat insulating plate 112 and between the right side plate R and the heat insulating plate 112. Accordingly, it is possible to prevent the heat exchanger body 110 from being overheated by the heat insulating space, and to prevent the heat source from leaking to the outside, thereby increasing the heat efficiency.

The first heat exchange tube (120) is composed of a plurality of tubes. In one embodiment, each first heat exchange tube 120 is an oval pipe having an elliptical or oval cross section as shown in FIG. 5 (b).

The first heat exchange tubes 120 pass through the left and right side plates L and R and are assembled in the zigzag direction. A heat exchange fin 120a is formed on the outer circumference of the bottom plate 120 as shown in FIG. It is assembled. The heat exchange fin 120a is usually assembled over the entire length of the first heat exchange tube 120. [

That is, the first heat exchange tube 120 includes a straight tube portion (for example, a mist pipe) having a heat exchange fin 120a and disposed inside the heat exchanger body 110 and a heat exchanger body 110 Quot; U " -shaped connector (see 121 in FIG.

The first heat exchange tube 120 is fixed to the left and right side plates L and R through welding. More specifically, the U-shaped connecting tube portion of the first heat exchange tube 120 is fixed to the left and right side plates L and R.

When the first heat exchanger tube 120 is fixed to the left and right side plates L and R as described above, the first heat exchanger tube 120 firmly holds the heat exchanger body 110, prevent.

For example, a side of the first heat exchange tube 120 is provided with a water inlet IN through which water is introduced to supply the water to the heat exchanger according to the present invention.

Meanwhile, when a mist pipe is used as the first heat exchanging pipe 120, the U-shaped connecting pipe 121 connecting the two mist pipes must be elliptical in cross section. That is, a U-shaped connector pipe 121, which is also referred to as an 'oval U-vender', is used.

This " U " shaped connector tube 121 is shown in FIG. 6 (a) is a perspective view, Fig. 6 (b) is a front view, and Fig. 6 (c) is a side view.

The U-shaped connecting tube 121 includes a straight portion 121a and a curved portion 121b. At this time, as shown in FIG. 6 (b), the length of the straight portion 121a of the U-shaped connecting tube 121 is preferably 10 mm or more and 15 mm or less.

Since the straight portion 121a is provided, the water discharged from the off-gas pipe abruptly hits the curved portion 121b, thereby preventing the U-shaped connecting pipe 121 from being impacted with water and improving the flow characteristics of water .

Therefore, it is possible to prevent breakage and noise generation of the U-shaped connector tube 121. On the other hand, if the length of the U-shaped connecting pipe 121 is too long, the entire heat exchanging pipe 120 becomes long and the thermal efficiency drops and the circulation time of the water becomes excessively long.

The total height of the U-shaped connecting tube 121 including the straight portion 121a and the curved portion 121b is preferably 30.5 mm or more and 35.5 mm or less. The center axis interval of the straight line portion 121a is 20 mm or more and 28 mm or less.

This means that the curvature of the curved portion 121b is adjusted in accordance with the length of the straight portion 121a. Therefore, the flow characteristics of the water in the curved portion 121b are improved, and water shock and noise are prevented.

In addition, as shown in FIG. 6 (c), the U-shaped connecting tube 121 having an oval cross-sectional shape preferably has a major axis outer diameter of 26 mm or more and 29 mm or less and a minor axis outer diameter of 13 mm or more and 16 mm or less. The thickness of the U-shaped connecting tube 121 is 0.75 mm or more and 0.85 mm or less.

Therefore, the U shape connecting pipe 121 has an appropriate thickness and provides sufficient strength, but the shape of the U shape connecting pipe 121 can be adjusted to the shape of the straight portion 121a and the curved portion 121b, .

A plurality of second heat exchange tubes 130 are also provided. As an example, each of the second heat exchange tubes 130 is a normal tube having a circular section as shown in FIG. 5 (b).

The second heat exchange tubes 130 are also connected to each other in the zigzag direction through the left and right side plates L and R and welded to the left and right side plates L and R respectively.

When the second heat exchanger tube 130 is also welded to the left and right side plates L and R, the first heat exchanger tube 120 and the first heat exchanger tube 120 as described above are firmly held to prevent deformation of the heat exchanger body 110.

The third heat exchanger tube 140 is installed along the inner circumferential surface of the heat exchanger body 110 and supports the inner circumferential surface of the heat exchanger body 110. That is, the third heat exchanger tube 140 is installed along the inner circumferential surface of the heat exchanger body 110, for example, one tube being bent in a substantially quadrangular shape.

Accordingly, the third heat exchange tube 140 serves as a pressure stay for preventing deformation of the heat exchanger body 110 during thermal expansion or contraction. Of course, it is obvious that the heat exchanger tube plays a role as well.

The outflow end of the third heat exchange tube 140 is connected to the outflow end of the second heat exchange tube 130 and the outlet end OUT of the third heat exchange tube 140 is welded to the front side plate F. . And is discharged through the outlet (OUT) of the third heat exchange pipe (140).

The present invention is different from the prior art in that a plurality of heat exchange tubes are not the same, but a first heat exchange tube 120 having a heat exchange fin 120a for significantly increasing the heat exchange rate and a second heat exchange tube 120a having no other heat exchange fin 120a A heat exchange tube 130 and a third heat exchange tube 140.

The first heat exchange tube 120 having the heat exchange fin 120a is installed at a lower portion of the heat exchanger body 110 so as to be installed at a position distant from the direction in which the high temperature heat source is supplied and has a heat exchange fin 120a The second heat exchanger tube 130 and the third heat exchanger tube 140 are installed in the remaining portion of the heat exchanger body 110 where the first heat exchanger tube 120 is not installed.

The second heat exchanger tube 130 is installed at the middle portion of the remaining portion where the first heat exchanger tube 120 is not installed and the third heat exchanger tube 140 is connected to the upper portion of the second heat exchanger tube 130 Respectively.

The reason for this is to prevent the generation of carbon monoxide (CO) as the temperature is rapidly lowered in the process of passing the high-temperature combustion gas through the heat exchanger of the present invention.

The amount of heat absorption is relatively smaller in the second heat exchanging tube 130 and the third heat exchanging tube 140 near the burner than in the case where the heat exchanging fin 120a is absent and the heat exchanging fin 120a is present. Therefore, the temperature gradient of the combustion gas generated in the burner is prevented from falling sharply.

In addition, the first heat exchange tube 120 is provided with the heat exchange fin 120a, so that heat can be absorbed sufficiently from the combustion gas whose temperature is lowered to some extent, thereby preventing the thermal efficiency from being lowered.

That is, the present invention suppresses carbon monoxide generation due to a rapid decrease in the temperature of the combustion gas while having a high thermal efficiency. Therefore, it is possible to prevent the carbon monoxide from entering the room or the like to cause harm to the human body, and to significantly reduce the emission of carbon monoxide harmful to the environment.

The specific embodiments of the present invention have been described above. It is to be understood, however, that the scope and spirit of the present invention is not limited to these specific embodiments, and that various modifications and changes may be made without departing from the spirit of the present invention. If you have, you will understand.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

110: heat exchanger body 111: contact tube
112: insulating plate 113: embossed portion
120: first heat exchange tube 120a: heat exchange pin
121: U-shaped connecting tube 121a:
121b: Curved portion 130: Second heat exchanger tube
140: Third heat exchanger tube
L: left side plate R: right side plate
F: front side plate B: rear side plate
IN: Inlet OUT: Outlet

Claims (10)

A plurality of first heat exchange tubes 120 installed in the heat exchanger body 110 and an eco-friendly heat exchanger 120 for circulating water along the plurality of second heat exchange tubes 130 and the third heat exchange tubes 140, In the heat exchanger,
The heat exchanger body 110 is composed of front / rear / left / right side plates F, B, L, R;
The first heat exchange tubes 120 are connected to each other in the zigzag direction through the left and right side plates L and R and a heat exchange fin 120a is assembled to the outer circumference of the first heat exchange tubes 120,
The second heat exchange tubes 130 are connected to each other in the zigzag direction through the left and right side plates L and R,
Wherein the third heat exchanger tube (140) is installed along the inner circumferential surface of the heat exchanger body (110) and supports the inner circumferential surface of the heat exchanger body (110). The method according to claim 1,
The first heat exchange tube 120 having the heat exchange fin 120a is installed at a lower portion of the heat exchanger body 110 so as to be installed at a position distant from the direction in which the high temperature heat source is supplied,
The second heat exchange tube 130 and the third heat exchange tube 140 without the heat exchange fin 120a are installed in the remaining portion of the heat exchanger body 110 where the first heat exchange tube 120 is not installed Wherein the heat exchanger is a heat exchanger. 3. The method of claim 2,
The second heat exchange tube 130 is installed on the upper portion of the first heat exchange tube 120 and the third heat exchange tube 140 is installed on the upper portion of the second heat exchange tube 130 Eco-friendly heat exchanger. The method of claim 3,
The first heat exchange tube 120 and the second heat exchange tube 130 are welded to the left and right side plates L and R and the outlet OUT of the third heat exchange tube 140 is fixed to the front side plate (F) by welding. ≪ RTI ID = 0.0 > 8. < / RTI > The method according to claim 1,
Further comprising a contact tube (111) provided in contact with the inner surface of the front and rear side plates (F, B), wherein the contact tube (111) (130). ≪ / RTI > The method according to claim 1,
Wherein an insulation plate (112) is inserted into the inner side surfaces of the left and right side plates (L, R). The method according to claim 6,
The left and right side plates L and R having the heat insulating plate 112 inserted therein are provided with an embossing portion 113 protruding inward and in contact with the heat insulating plate 112, R) and the heat insulating plate (112). 8. The method according to any one of claims 1 to 7,
The first heat exchange pipe 120 is an oval pipe having an elliptical cross section and the U-shaped connection pipe 121 connecting the end portions of the two fault pipes has a straight portion 121a and a curved portion 121b), and the length of the straight portion (121a) of the U-shaped connecting tube (121) is 10 mm or more and 15 mm or less. 9. The method of claim 8,
The height of the U-shaped connecting tube (121) is not less than 30.5 mm and not more than 35.5 mm. 10. The method of claim 9,
Wherein the U-shaped connecting pipe 121 has a major axis outer diameter of 26 mm or more and 29 mm or less, and the U-shaped connecting pipe 121 has a minor axis outer diameter of 13 mm or more and 16 mm or less.
KR1020130056160A 2012-10-23 2013-05-20 Environmental-friendly heat exchanger KR20140051760A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/KR2014/004468 WO2014189244A1 (en) 2013-05-20 2014-05-19 Eco-friendly heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20120117610 2012-10-23
KR1020120117610 2012-10-23

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017864A1 (en) * 2014-08-01 2016-02-04 (주)귀뚜라미 High-efficiency eco-friendly sensible-heat heat exchanger
EP3236175A1 (en) * 2016-04-18 2017-10-25 Daesung Celtic Enersys Co., Ltd. Heat exchanger
CN109297194A (en) * 2018-10-23 2019-02-01 广东万家乐燃气具有限公司 Heat exchanger and water heater
US20210199340A1 (en) * 2019-12-30 2021-07-01 Kyungdong Navien Co., Ltd Heat exchanger unit and method for manufacturing the same
US11585572B2 (en) 2018-06-05 2023-02-21 Kyungdong Navien Co., Ltd. Heat exchanger unit and condensing boiler using the same
US11835262B2 (en) 2018-06-05 2023-12-05 Kyungdong Navien Co., Ltd. Heat exchanger unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016017864A1 (en) * 2014-08-01 2016-02-04 (주)귀뚜라미 High-efficiency eco-friendly sensible-heat heat exchanger
EP3236175A1 (en) * 2016-04-18 2017-10-25 Daesung Celtic Enersys Co., Ltd. Heat exchanger
US11585572B2 (en) 2018-06-05 2023-02-21 Kyungdong Navien Co., Ltd. Heat exchanger unit and condensing boiler using the same
US11835262B2 (en) 2018-06-05 2023-12-05 Kyungdong Navien Co., Ltd. Heat exchanger unit
US11835261B2 (en) 2018-06-05 2023-12-05 Kyungdong Navien Co., Ltd. Heat exchanger unit
US11879666B2 (en) 2018-06-05 2024-01-23 Kyungdong Navien Co., Ltd. Heat exchanger unit
CN109297194A (en) * 2018-10-23 2019-02-01 广东万家乐燃气具有限公司 Heat exchanger and water heater
US20210199340A1 (en) * 2019-12-30 2021-07-01 Kyungdong Navien Co., Ltd Heat exchanger unit and method for manufacturing the same

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