CN217877212U - Heat exchanger and water heater - Google Patents

Abstract

The utility model discloses a heat exchanger, water heater, the heat exchanger includes: a plurality of heat conductive pipes, each heat conductive pipe being configured as a flat tube; a first conducting member and a second conducting member configured to allow the coolant to sequentially flow through the plurality of heat conductive pipes, a gap being defined between the flat end surfaces of the first conducting member, the second conducting member, and any adjacent two of the heat conductive pipes; the heat conducting fin is arranged in each gap and provided with a plurality of bending parts, a first straight part is formed on each bending part, a second straight part is formed between any two adjacent bending parts, and the first straight part and the second straight part are abutted against and brazed with the flat end surfaces of the adjacent heat conducting pipes; the bending part has a longitudinal direction perpendicular to the longitudinal direction of the heat pipe, the gap has a distance H1 along the longitudinal direction, the bending part has a distance H2 along the longitudinal direction in an unstressed state, and H2 is greater than H1. The utility model discloses can improve heat exchange efficiency, simplify welding process.

Description

Heat exchanger and water heater

Technical Field

The utility model belongs to the technical field of the heat transfer technique and specifically relates to a heat exchanger, water heater are related to.

Background

Under the background of energy conservation and emission reduction, the trend in the industry is to improve the energy efficiency of the gas water heater. The gas water heater is also called as a gas water heater, and refers to a gas appliance which takes gas as fuel and transfers heat to cooling liquid flowing through a heat exchanger in a combustion heating mode so as to achieve the purpose of preparing hot water.

The improvement of the energy efficiency of the gas water heater requires designing a heat exchanger with high heat exchange efficiency, small volume, simple process and high reliability. Heat exchangers, also known as heat exchangers or heat exchange devices. Heat exchangers are devices used to transfer heat from a hot fluid to a cold fluid to meet specified process requirements, and are an industrial application of convective and conductive heat transfer. The heat exchangers can be classified in different manners, for example, the heat exchangers can be classified into three categories of dividing wall type, mixing type and regenerative type according to the operation process; the degree of compactness of the surface thereof can be classified into two types, compact and non-compact.

At present, the heat exchanger applied to the water heater is provided with a corrugated pipe type, a light pipe type and a pipe fin type heat exchanger at home and abroad; the heat conducting pipes of the heat exchanger mainly adopt round pipes or oval pipes, the heat exchange efficiency is relatively low, and meanwhile, the means for increasing the heat exchange mainly depends on increasing the heat exchange area, namely using corrugated pipes and increasing heat conducting fins such as fins; the corrugated pipe is thin, the reliability is relatively poor, the finned heat conducting fins need a pipe penetrating process and the like, the welding process is relatively complex, and the welding difficulty is high.

Therefore, the existing heat exchanger is to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the present invention is to provide a heat exchanger to solve the problems of low heat exchange efficiency and complex welding process of the heat exchanger in the prior art.

The utility model discloses still aim at providing a water heater to use foretell heat exchanger.

According to the utility model discloses heat exchanger, include: a plurality of heat conductive pipes arranged side by side, each of the heat conductive pipes being configured as a flat tube; a first conduction part and a second conduction part, the first conduction part being communicated with one end of the plurality of heat pipes, the second conduction part being communicated with the other end of the plurality of heat pipes, the second conduction part and the first conduction part being configured to enable a coolant to flow through the plurality of heat pipes in sequence, wherein a liquid inlet and a liquid outlet are provided on the first conduction part, and a gap is defined between the first conduction part, the second conduction part, and the flat end surfaces of any two adjacent heat pipes; the heat conducting fins are arranged in the gaps and provided with a plurality of bending parts, a first straight part is formed on each bending part, a second straight part is formed between any two adjacent bending parts, and the first straight part and the second straight part are abutted against the flat end surfaces of the adjacent heat conducting pipes and are connected by brazing; the bent part has a longitudinal direction perpendicular to the longitudinal direction of the heat pipe, the gap has a distance H1 along the longitudinal direction, and the bent part has a distance H2 along the longitudinal direction in an unstressed state, wherein H2 is greater than H1.

According to the utility model discloses the heat exchanger, through constructing the heat pipe for the flat tube, can increase the heat transfer surface, improve heat exchanger efficiency, the conducting strip that has a plurality of kinks through the setting, install the conducting strip and can make the structure of heat exchanger compacter in the clearance, the volume is littleer, secondly the kink is greater than the distance H1 that the clearance set up along the lengthwise direction along the distance H2 that lengthwise direction set up under the non-atress state, make first straight portion and the tight butt of second straight portion on the plain end face of heat pipe, can guarantee the gap of brazing and the quality of brazing, be favorable to simplifying welding process.

In addition, according to the utility model discloses a heat exchanger can also have following additional technical characterstic:

in some embodiments of the present invention, in the length direction of the heat conduction pipe, both ends of the heat conduction fin and both ends of the gap are close to each other.

In some embodiments of the present invention, in the length direction of the heat pipe, both ends of the heat-conducting fin flush with both ends of the gap.

In some embodiments of the present invention, the heat exchanger further comprises: a first gap is formed between the first baffle and the heat conduction pipe at the head end, the heat conduction sheet is arranged in the first gap, and the first flat part or the second flat part is abutted against the first baffle and is connected with the first baffle in a brazing mode; and a second gap is formed between the second baffle and the heat conduction pipe at the tail end, the heat conduction sheet is arranged in the second gap, and the first flat part or the second flat part is abutted against and connected with the second baffle in a brazing mode.

In some embodiments of the present invention, the first conduction part and the second conduction part are respectively connected to two ends of the first baffle, and the first conduction part and the second conduction part are respectively connected to two ends of the second baffle.

In some embodiments of the present invention, a plurality of first liquid chambers arranged side by side are disposed inside the first conducting component, the first liquid chamber located at the head end is correspondingly disposed and communicated with the heat pipe located at the head end, the liquid inlet is communicated with the first liquid chamber located at the head end, the first liquid chamber located at the tail end is correspondingly disposed and communicated with the heat pipe located at the tail end, the liquid outlet is communicated with the first liquid chamber located at the tail end, and each of the rest first liquid chambers is correspondingly disposed and communicated with two adjacent heat pipes; the inside of second part that switches on is equipped with a plurality of second liquid chambeies, every the second liquid chamber with adjacent two heat pipe corresponds the setting and communicates.

In some embodiments of the present invention, the first conducting part comprises: the first box is provided with a first side wall connected with the heat conduction pipes, a plurality of first mounting holes are formed in the first side wall, the plurality of first mounting holes and the plurality of heat conduction pipes are arranged in a one-to-one correspondence mode, and the heat conduction pipes penetrate through the corresponding first mounting holes; the first cover is arranged in the first box and abuts against the first side wall, the first cover is provided with a plurality of first grooves arranged side by side, and the first grooves and the first side wall define the first liquid cavity therebetween.

In some embodiments of the present invention, the liquid inlet is disposed on the first groove of the head end, the liquid outlet is disposed on the first groove of the tail end, the first conducting part further includes: the liquid inlet pipe support is arranged on the first cover, a liquid inlet pipe groove is formed in the liquid inlet pipe support, a first communicating port is formed in the liquid inlet pipe groove, and the first communicating port and the liquid inlet are correspondingly arranged; the liquid outlet pipe support is arranged on the first cover, a liquid outlet pipe groove is formed in the liquid outlet pipe support, a second communicating port is formed in the liquid outlet pipe groove, and the second communicating port and the liquid outlet are correspondingly arranged.

In some embodiments of the present invention, the second conducting part comprises: the second box is provided with a second side wall connected with the heat conduction pipes, a plurality of second mounting holes are formed in the second side wall, the plurality of second mounting holes and the plurality of heat conduction pipes are arranged in a one-to-one correspondence mode, and the heat conduction pipes penetrate through the corresponding second mounting holes; the second cover is arranged in the second box and abuts against the second side wall, the second cover is provided with a plurality of second grooves which are arranged side by side, and the second liquid cavity is defined between the second grooves and the second side wall.

According to the utility model discloses water heater, including foretell heat exchanger.

According to the utility model discloses water heater adopts this heat exchanger can improve heat exchange efficiency, reduces manufacturing cost.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a heat exchanger according to an embodiment of the present invention;

fig. 2 is a top view of a heat exchanger according to an embodiment of the present invention;

fig. 3 is a schematic view of a thermally conductive sheet according to an embodiment of the present invention.

Reference numerals:

100. a heat exchanger;

10. a heat conducting pipe; 101. a gap; 102. a flat end face;

20. a first conduction member; 201. a first cartridge; 2011. a first side wall; 2012. a first groove; 2013. a liquid inlet; 2014. a liquid outlet; 202. a first cover; 203. a liquid inlet pipe support; 2031. a liquid inlet pipe groove; 2032. a first communication port; 204. a liquid outlet pipe bracket; 2041. a liquid outlet pipe groove; 2042. a second communication port;

30. a second conduction member; 301. a second cartridge; 302. a second cover; 3021. a second groove;

40. a heat conductive sheet; 401. a bending section; 402. a first straight portion; 403. a second straight portion;

50. a first baffle plate; 501. a first void;

60. a second baffle; 601. a second void.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial.

In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

A heat exchanger 100 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1 to 3, a heat exchanger 100 according to an embodiment of the present invention includes: the heat conductive pipe 10, the first conduction member 20, the second conduction member 30, and the heat conductive sheet 40.

The heat conductive pipes 10 are plural and arranged side by side, and each heat conductive pipe 10 is configured as a flat tube so that each heat conductive pipe 10 has two flat end faces 102. As shown in fig. 1, the flat tube may have flat end surfaces 102 at both left and right ends and circular arc surfaces at both upper and lower ends. Compare in pipe or elliptical tube, under the same heat exchanger volume and coolant flow, the heat transfer surface area increase of flat tube is big, can promote heat exchange efficiency.

The first conducting part 20 is communicated with one end of the plurality of heat conductive pipes 10, the second conducting part 30 is communicated with the other end of the plurality of heat conductive pipes 10, the second conducting part 30 and the first conducting part 20 are configured to enable the cooling liquid to sequentially flow through the plurality of heat conductive pipes 10, wherein the first conducting part 20 is provided with an inlet 2013 and an outlet 2014, and a gap 101 is defined between the first conducting part 20, the second conducting part 30 and the flat end surface 102 of any two adjacent heat conductive pipes 10. A heat conductive sheet 40 is provided in each gap 101, the heat conductive sheet 40 has a plurality of bent portions 401, a first straight portion 402 is formed on each bent portion 401, a second straight portion 403 is formed between any two adjacent bent portions 401, and the first straight portion 402 and the second straight portion 403 abut against and are brazed to the flat end surfaces 102 of the adjacent heat conductive pipes 10.

The bending portion 401 has a longitudinal direction perpendicular to the longitudinal direction of the heat pipe 10, the gap 101 has a distance H1 along the longitudinal direction, and the bending portion 401 has a distance H2 along the longitudinal direction in an unstressed state, wherein H2 is greater than H1. It can be understood that the plurality of bent portions 401 make the entire heat conducting strip 40 have elasticity, and it is ensured that the heat conducting strip 40 can be installed in the gap 101, and therefore the heat conducting strip 40 is stretched to reduce H2, when the heat conducting strip 40 can be installed in the gap 101, the heat conducting strip 40 elastically resets to make the first straight portion 402 and the second straight portion 403 tightly abut against the flat end surface 102 of the heat conducting pipe 10, and the heat conducting strip 40 is fixed without an external jig or an auxiliary instrument, and at this time, the gap between the first straight portion 402 and the flat end surface 102, and the gap between the second straight portion 403 and the flat end surface 102 are small, and after the solder paste is applied, the furnace brazing is performed, so that the brazing gap can be ensured, the brazing quality can be ensured, and the welding process can be simplified.

Specifically, the material of the heat conductive pipes 10 and the heat conductive sheets 40 may be stainless steel.

Specifically, when the heat exchanger 100 is in operation, the cooling liquid enters the first conducting part 20 from the liquid inlet 2013, then enters the heat conductive pipes 10, and flows from the left heat conductive pipe 10 to the right heat conductive pipe 10 in sequence until flowing out from the liquid outlet 2014 of the first conducting part 20. The number of the heat pipes 10 is not particularly limited, and can be set by those skilled in the art according to actual needs, and the number of the heat conducting fins 40 is set according to the number of the corresponding heat pipes 10, for example, when the number of the heat pipes 10 is 6, 5 heat conducting fins are required.

According to the utility model discloses heat exchanger 100, through constructing heat pipe 10 as the flat tube, can increase the heat transfer surface, improve heat exchanger efficiency, through setting up the conducting strip 40 that has a plurality of kinks 401, install the conducting strip 40 in clearance 101, can make heat exchanger 100's structure compacter, the volume is littleer, secondly kink 401 is greater than the distance H1 that clearance 101 set up along the lengthwise direction along the distance H2 that lengthwise direction set up under the non-stress state, make first straight portion 402 and the tight butt of second straight portion 403 on heat pipe 10's plain end face 102, can guarantee brazing gap and brazing quality, be favorable to simplifying welding process.

In some embodiments, referring to fig. 2, both ends of the heat conductive sheet 40 and both ends of the gap 101 are close to each other in the length direction of the heat conductive pipe 10. That is, the length (the dimension in the front-rear direction in fig. 2) of the heat conductive fins 40 and the length of the heat conductive pipes 10 are substantially equal, so that the heat exchange efficiency can be improved.

In some embodiments, referring to fig. 2, in the length direction of the heat conductive pipes 10, both ends of the heat conductive sheet 40 are flush with both ends of the gap 101. That is, the length of the heat conductive sheet 40 is equal to the length of the heat conductive pipe 10, thereby improving heat exchange efficiency.

In some embodiments, referring to fig. 1, the heat exchanger 100 further includes a first baffle 50 and a second baffle 60, a first gap 501 is provided between the first baffle 50 and the first end heat pipe 10, a heat conducting fin 40 is provided in the first gap 501, and the first flat portion 402 or the second flat portion 403 abuts against and is brazed to the first baffle 50; a second gap 601 is provided between the second baffle 60 and the heat conducting pipe 10 at the end, a heat conducting fin 40 is provided in the second gap 601, and the first flat part 402 or the second flat part 403 is connected with the second baffle 60 by stopping and brazing. As shown in fig. 1, the plurality of heat transfer pipes 10 are arranged side by side in the left-right direction, the heat transfer pipe 10 at the head end may be the leftmost end, and the heat transfer pipe 10 at the tail end may be the rightmost end, so that the heat exchange can be performed on the flat end surface 102 on the left side of the heat transfer pipe 10 at the head end through the first baffle 50 and the first gap 501, thereby further improving the heat exchange efficiency; the heat exchange efficiency can be further improved by exchanging heat with the flat end surface 102 on the right side of the heat conductive pipe 10 at the end by the second baffle 60 and the second gap 601.

In some embodiments, referring to fig. 2, two ends of the first barrier 50 are respectively connected to the first conducting member 20 and the second conducting member 30, and two ends of the second barrier 60 are respectively connected to the first conducting member 20 and the second conducting member 30. Thereby, the first barrier 50 and the second barrier 60 are fixed to the first and second conduction members 20 and 30, and stability and reliability of the first barrier 50 and the second barrier 60 are enhanced.

In some embodiments, referring to fig. 1, a plurality of first liquid chambers (not shown) are disposed inside the first conducting part 20, the first liquid chamber at the head end is disposed and communicated with the heat conducting pipe 10 at the head end, the liquid inlet 2013 is communicated with the first liquid chamber at the head end, the first liquid chamber at the tail end is disposed and communicated with the heat conducting pipe 10 at the tail end, the liquid outlet 2014 is communicated with the first liquid chamber at the tail end, and each of the remaining first liquid chambers is disposed and communicated with two adjacent heat conducting pipes 10; the second communicating member 30 has a plurality of second liquid chambers (not shown) therein, and each of the second liquid chambers is disposed corresponding to and communicates with two adjacent heat conductive pipes 10.

As described above, the plurality of first liquid chambers and the plurality of heat transfer pipes 10 are arranged in the same direction, for example, the plurality of first liquid chambers are arranged side by side in the left-right direction in fig. 1, and the first liquid chamber at the head end means the leftmost side, and the first liquid chamber at the tail end means the rightmost side. Similarly, the arrangement directions of the plurality of second liquid chambers and the plurality of heat conduction pipes 10 are the same, and the second liquid chamber at the head end refers to the leftmost side, and the second liquid chamber at the tail end refers to the rightmost side.

The quantity of second sap cavity is 1 less than the quantity in first sap cavity, for example, the quantity of heat pipe 10 is six, marks number 1, number 2, number 3 in proper order from the left hand right side … …, and the quantity of second sap cavity is three, marks number 1, number 2, number 3 in proper order from the left hand right side, and the quantity of first sap cavity is four, marks number 1, number 2, number 3, number 4 in proper order from the left hand right side. The cooling liquid enters the first liquid cavity No. 1 from the liquid inlet 2013, then enters the heat conducting pipe 10 No. 1 (the heat conducting pipe 10 at the head end), and when reaching the second liquid cavity No. 1, then the cooling liquid can enter the heat conducting pipe 10 No. 2, then the cooling liquid enters the first liquid cavity No. 2, and so on, … … finally flows out from the liquid outlet 2014 of the first liquid cavity No. 4. It should be noted that the cooling liquid in the present invention may be water or other cooling medium, and is not described herein again.

In some embodiments, referring to fig. 1, the first conducting part 20 includes a first box 201 and a first cover 202, the first box 201 has a first sidewall 2011 to which the heat conducting pipes 10 are connected, the first sidewall 2011 is provided with a plurality of first mounting holes (not shown), the plurality of first mounting holes and the plurality of heat conducting pipes 10 are arranged in a one-to-one correspondence, and the heat conducting pipes 10 are inserted into the corresponding first mounting holes; the first cap 202 is disposed in the first container 201 and stops against the first sidewall 2011, the first cap 202 has a plurality of first grooves 2012 disposed side by side, and a first liquid chamber is defined between the first grooves 2012 and the first sidewall 2011. That is to say, first part 20 that switches on is the box structure, thereby first recess 2012 and first lateral wall 2011 of first lid 202 end to support the cooperation and form first sap cavity, can dismantle heat pipe 10, first box 201 and first lid 202 like this, can conveniently change impaired part, save the cost, also conveniently clean first sap cavity.

Specifically, the first cover 202 may be a plate with a larger thickness, and the first groove 2012 is a groove formed in the plate. Alternatively, the first groove 2012 can be formed on the first cover 202 by being recessed, which can save the sheet material, and can also reduce the weight and the cost.

In some embodiments, referring to fig. 1, the liquid inlet 2013 is disposed on the first groove 2012 at the head end, the liquid outlet 2014 is disposed on the first groove 2012 at the tail end, the first conducting member 20 further includes a liquid inlet pipe bracket 203 and a liquid outlet pipe bracket 204, the liquid inlet pipe bracket 203 is disposed on the first cover 202, the liquid inlet pipe bracket 203 is disposed with a liquid inlet pipe groove 2031, the liquid inlet pipe groove 2031 is disposed with a first communicating port 2032, and the first communicating port 2032 and the liquid inlet 2013 are disposed correspondingly; the drain pipe support 204 is disposed on the first cover 202, a drain pipe groove 2041 is disposed on the drain pipe support 204, a second communicating port 2042 is disposed on the drain pipe groove 2041, and the second communicating port 2042 and the liquid outlet 2014 are correspondingly disposed. It can be understood that the liquid inlet pipe bracket 203 and the liquid outlet pipe bracket 204 can be used for mounting a liquid inlet pipe and a liquid outlet pipe, specifically, the liquid inlet pipe groove 2031 is a circular groove, the liquid inlet pipe is sleeved on the liquid inlet pipe groove 2031, and the cooling liquid is introduced into the liquid inlet 2013 through the first communication port 2032; the liquid outlet pipe groove 2041 is a circular groove, the liquid outlet pipe is sleeved on the liquid outlet pipe groove 2041, and cooling liquid entering the liquid inlet 2013 enters the liquid outlet pipe through the second communicating port 2042. That is, the liquid inlet pipe and the liquid outlet pipe are conveniently installed by providing the liquid inlet pipe support 203 and the liquid outlet pipe support 204.

In some embodiments, referring to fig. 1, the second conducting member 30 includes a second box 301 and a second cover 302, the second box 301 has a second sidewall (not shown) connected to the heat conductive pipes 10, the second sidewall is provided with a plurality of second mounting holes (not shown), the plurality of second mounting holes and the plurality of heat conductive pipes 10 are arranged in a one-to-one correspondence, and the heat conductive pipes 10 are inserted into the corresponding second mounting holes; a second cover 302 is provided in the second cartridge 301 and abuts against the second side wall, the second cover 302 having a plurality of second recesses 3021 arranged side by side, the second recesses 3021 and the second side wall defining the second liquid chamber therebetween. That is to say, the second conduction part 30 is a box structure, and the second groove 3021 and the second sidewall of the second box 301 are in abutting fit to form a second liquid chamber, so that the heat conduction pipe 10, the second box 301 and the second cover 302 can be detached, which not only can replace damaged parts and save cost, but also can conveniently clean the first liquid chamber.

Specifically, the second cover 302 may be a plate with a larger thickness, and the second recess 3021 is a groove opened on the plate.

Specifically, the second groove 3021 may also be formed by recessing the second cover 302, which not only saves board material, but also reduces weight and cost.

A specific embodiment of the heat exchanger 100 of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the heat exchanger 100 includes: the heat conductive pipe 10, the first conduction member 20, the second conduction member 30, the heat conductive sheet 40, the first shutter 50, and the second shutter 60. The heat conductive sheet 40 and the heat conductive pipe 10 are made of stainless steel.

The heat conductive pipes 10 are six and arranged side by side in the left-right direction, each heat conductive pipe 10 is configured as a flat tube, each heat conductive pipe 10 has left and right two flat end surfaces 102, and the upper and lower ends are circular arc surfaces.

The first conducting part 20 is communicated with one ends of six heat conduction pipes 10, the second conducting part 30 is communicated with the other ends of six heat conduction pipes 10, the second conducting part 30 and the first conducting part 20 are configured to enable cooling water to flow through six heat conduction pipes 10 in sequence, wherein the first conducting part 20 is provided with a liquid inlet 2013 and a liquid outlet 2014, and a gap 101 is defined between the first conducting part 20, the second conducting part 30 and the flat end faces 102 of any two adjacent heat conduction pipes 10. A heat conductive sheet 40 is provided in each gap 101, the heat conductive sheet 40 has 39 bent portions 401, a first straight portion 402 is formed on each bent portion 401, a second straight portion 403 is formed between any two adjacent bent portions 401, and the first straight portion 402 and the second straight portion 403 abut against and are brazed to the flat end surfaces 102 of the adjacent heat conductive pipes 10.

A first gap 501 is formed between the first baffle 50 and the heat pipe 10 at the head end, a heat conducting fin 40 is arranged in the first gap 501, and the first flat part 402 or the second flat part 403 is connected with the first baffle 50 in a stopping and brazing manner; a second gap 601 is provided between the second baffle 60 and the heat conduction pipe 10 at the end, a heat conduction sheet 40 is provided in the second gap 601, and the first flat portion 402 or the second flat portion 403 is connected to the second baffle 60 by soldering.

The bending part 401 has a longitudinal direction perpendicular to the longitudinal direction of the heat pipe 10, the gap 101 has a distance H1 along the longitudinal direction, and the bending part 401 has a distance H2 along the longitudinal direction in an unstressed state, wherein H2 is greater than H1. Both ends of the heat conductive sheet 40 and both ends of the gap 101 are close to each other in the longitudinal direction of the heat conductive pipe 10.

The first shutter 50 has both ends connected to the first and second conduction members 20 and 30, respectively, and the second shutter 60 has both ends connected to the first and second conduction members 20 and 30, respectively.

Four first liquid cavities arranged side by side are arranged in the first conduction part 20, the first liquid cavity at the head end is correspondingly arranged and communicated with the heat conduction pipe 10 at the head end, the liquid inlet 2013 is communicated with the first liquid cavity at the head end, the first liquid cavity at the tail end is correspondingly arranged and communicated with the heat conduction pipe 10 at the tail end, the liquid outlet 2014 is communicated with the first liquid cavity at the tail end, and each of the rest first liquid cavities is correspondingly arranged and communicated with the two adjacent heat conduction pipes 10; the second conduction member 30 has three second liquid chambers therein, and each second liquid chamber is provided corresponding to and communicated with two adjacent heat conductive pipes 10.

The first conducting part 20 includes a first box 201 and a first cover 202, the first box 201 has a first sidewall 2011 connected to the heat conducting pipe 10, the first sidewall 2011 is provided with six first mounting holes, the six first mounting holes and the six heat conducting pipes 10 are arranged in a one-to-one correspondence manner, and the heat conducting pipes 10 are inserted into the corresponding first mounting holes; the first cap 202 is disposed in the first container 201 and stops against the first sidewall 2011, the first cap 202 has four first grooves 2012 disposed side by side, and a first liquid chamber is defined between the first grooves 2012 and the first sidewall 2011.

The liquid inlet 2013 is arranged on the first groove 2012 at the head end, the liquid outlet 2014 is arranged on the first groove 2012 at the tail end, the first conducting part 20 further comprises a liquid inlet pipe support 203 and a liquid outlet pipe support 204, the liquid inlet pipe support 203 is arranged on the first cover 202, a liquid inlet pipe groove 2031 is arranged on the liquid inlet pipe support 203, a first communicating port 2032 is arranged on the liquid inlet pipe groove 2031, and the first communicating port 2032 and the liquid inlet 2013 are correspondingly arranged; the drain pipe support 204 is disposed on the first cover 202, a drain pipe groove 2041 is disposed on the drain pipe support 204, a second communicating port 2042 is disposed on the drain pipe groove 2041, and the second communicating port 2042 and the liquid outlet 2014 are correspondingly disposed.

The second conduction member 30 includes a second box 301 and a second cover 302, the second box 301 has a second sidewall connected to the heat pipes 10, the second sidewall is provided with six second mounting holes, the six second mounting holes and the six heat pipes 10 are arranged in a one-to-one correspondence, and the heat pipes 10 are inserted into the corresponding second mounting holes; a second cover 302 is provided in the second cartridge 301 and abuts against the second side wall, the second cover 302 having three second recesses 3021 arranged side by side, the second recesses 3021 and the second side wall defining a second liquid chamber therebetween.

According to the utility model discloses water heater, including foretell heat exchanger 100.

The water heater may refer to a gas water heater, and may also refer to other forms of water heaters, and is not limited specifically here.

According to the utility model discloses water heater adopts this heat exchanger can improve heat exchange efficiency, reduces manufacturing cost.

In the description herein, references to the description of the terms "some embodiments," "optionally," "further," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A heat exchanger, comprising:

a plurality of heat conductive pipes arranged side by side, each of the heat conductive pipes being configured as a flat tube;

a first conducting part and a second conducting part, the first conducting part being communicated with one end of the plurality of heat conduction pipes, the second conducting part being communicated with the other end of the plurality of heat conduction pipes, the second conducting part and the first conducting part being configured to enable coolant to flow through the plurality of heat conduction pipes in sequence, wherein a liquid inlet and a liquid outlet are provided on the first conducting part, and a gap is defined between the flat end surfaces of any two adjacent heat conduction pipes;

the heat conducting fin is arranged in each gap and provided with a plurality of bent parts, a first straight part is formed on each bent part, a second straight part is formed between any two adjacent bent parts, and the first straight part and the second straight part are abutted against and connected with the flat end surfaces of the adjacent heat conducting pipes in a brazing mode;

the bent part has a longitudinal direction perpendicular to the longitudinal direction of the heat pipe, the gap has a distance H1 along the longitudinal direction, and the bent part has a distance H2 along the longitudinal direction in an unstressed state, wherein H2 is greater than H1.

2. The heat exchanger according to claim 1, wherein both ends of the heat conductive sheet and both ends of the gap are close to each other in a length direction of the heat conductive pipe.

3. The heat exchanger according to claim 1, wherein both ends of the heat conductive sheet are flush with both ends of the gap in a length direction of the heat conductive pipe.

4. The heat exchanger of claim 1, further comprising:

a first gap is formed between the first baffle and the heat conduction pipe at the head end, the heat conduction sheet is arranged in the first gap, and the first flat part or the second flat part is abutted against the first baffle and is connected with the first baffle in a brazing mode;

and a second gap is formed between the second baffle and the heat conduction pipe at the tail end, the heat conduction sheet is arranged in the second gap, and the first flat part or the second flat part is abutted against and connected with the second baffle in a brazing mode.

5. The heat exchanger according to claim 4, wherein both ends of the first baffle are connected to the first and second conducting members, respectively, and both ends of the second baffle are connected to the first and second conducting members, respectively.

6. The heat exchanger according to claim 1, wherein a plurality of first liquid chambers are provided inside the first conducting member, the first liquid chamber at the head end is provided and communicated with the heat conductive pipe at the head end, the liquid inlet is communicated with the first liquid chamber at the head end, the first liquid chamber at the tail end is provided and communicated with the heat conductive pipe at the tail end, the liquid outlet is communicated with the first liquid chamber at the tail end, and each of the remaining first liquid chambers is provided and communicated with two adjacent heat conductive pipes;

the inside of the second conduction part is provided with a plurality of second liquid cavities, and each second liquid cavity is correspondingly arranged and communicated with the two adjacent heat conduction pipes.

7. The heat exchanger of claim 6, wherein the first conducting member comprises:

the first box is provided with a first side wall connected with the heat conduction pipes, a plurality of first mounting holes are formed in the first side wall, the plurality of first mounting holes and the plurality of heat conduction pipes are arranged in a one-to-one correspondence mode, and the heat conduction pipes penetrate through the corresponding first mounting holes;

the first cover is arranged in the first box and abuts against the first side wall, the first cover is provided with a plurality of first grooves arranged side by side, and the first grooves and the first side wall define the first liquid cavity therebetween.

8. The heat exchanger of claim 7, wherein the liquid inlet is provided on the first groove at a head end, and the liquid outlet is provided on the first groove at a tail end, and the first conducting member further comprises:

the liquid inlet pipe support is arranged on the first cover, a liquid inlet pipe groove is formed in the liquid inlet pipe support, a first communicating port is formed in the liquid inlet pipe groove, and the first communicating port and the liquid inlet are correspondingly arranged;

the liquid outlet pipe support is arranged on the first cover, a liquid outlet pipe groove is formed in the liquid outlet pipe support, a second communicating port is formed in the liquid outlet pipe groove, and the second communicating port and the liquid outlet are correspondingly arranged.

9. The heat exchanger of claim 6, wherein the second conducting member comprises:

the second box is provided with a second side wall connected with the heat conduction pipes, a plurality of second mounting holes are formed in the second side wall, the plurality of second mounting holes and the plurality of heat conduction pipes are arranged in a one-to-one correspondence mode, and the heat conduction pipes penetrate through the corresponding second mounting holes;

the second cover is arranged in the second box and abuts against the second side wall, the second cover is provided with a plurality of second grooves which are arranged side by side, and the second liquid cavity is defined between the second grooves and the second side wall.

10. A water heater, comprising: the heat exchanger of any one of claims 1 to 9.

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