CN113108465A

CN113108465A - Novel heat exchanger for water heater

Info

Publication number: CN113108465A
Application number: CN202110293730.5A
Authority: CN
Inventors: 李炯添
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-07-13

Abstract

The invention discloses a novel heat exchanger for a water heater, which comprises a shell, wherein the shell is encircled to form a combustion chamber for heating, a heat exchange plate group for absorbing heat is arranged in the combustion chamber, a plurality of inner heat exchange tubes are arranged in the heat exchange plate group in a penetrating way, two ports of each inner heat exchange tube are respectively connected to the left part and the right part of the shell, the left part and the right part of the shell are respectively provided with a hollow first drainage chamber and a hollow second drainage chamber, and the inner heat exchange tubes are sequentially communicated end to end through the first drainage chamber and the second drainage chamber to form a channel for water flow to pass through.

Description

Novel heat exchanger for water heater

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of water heaters, in particular to a novel heat exchanger for a water heater.

[ background of the invention ]

The water heater is internally provided with a heat exchanger, the heat exchanger absorbs surrounding heat and transfers the heat to a heating pipeline arranged in the water heater, the traditional heating pipeline is S-shaped and penetrates through a shell of the heat exchanger back and forth, the S-shaped heating pipeline consists of a straight pipe arranged in the heat exchanger and an exposed U-shaped pipe, the structure is not only complicated, the U-shaped pipe is increased, the processing cost is increased, but also part of the heating pipeline is exposed, and the heat dissipation is accelerated.

The present invention has been made in view of the above-mentioned disadvantages.

[ summary of the invention ]

The invention aims to overcome the defects of the prior art and provide a novel heat exchanger which is used for a water heater, has a simple structure and higher energy utilization efficiency.

The invention is realized by the following technical scheme:

a novel heat exchanger for a water heater, characterized in that: including the shell, the shell enclose into a combustion chamber that supplies the gas combustion to release heat, the combustion chamber in be equipped with many interior heat exchange tubes that are used for being heated, interior heat exchange tube both ends mouth connect respectively in the left part and the right part of shell, the left part and the right part of shell be provided with first drainage room and the second drainage room of a plurality of cavity respectively, many interior heat exchange tube between be linked together end to end in proper order through first drainage room and second drainage room and form a rivers passageway that supplies rivers to pass through.

The heat exchanger as described above, characterized in that: the shell comprises a left cover plate, a right cover plate, a front wall plate and a rear wall plate, the left cover plate comprises a left outer cover plate and a left inner cover plate, the left outer cover plate is provided with a concave first water tank, the left outer cover plate is covered on the left inner cover plate to lead the tank wall of the first water tank and the left inner cover plate to enclose the first drainage chamber, the left inner cover plate is provided with an inner heat exchange tube hole for inserting an inner heat exchange tube into the first drainage chamber at the position corresponding to the first water tank, the right cover plate comprises a right outer cover plate and a right inner cover plate, a concave second water tank is arranged on the right outer cover plate, the right outer cover plate is covered on the right inner cover plate to lead the groove wall of the second water tank and the right inner cover plate to enclose the second drainage chamber, and the right inner cover plate is also provided with an inner heat exchange tube hole for inserting an inner heat exchange tube into the second drainage chamber at the position corresponding to the second water tank.

The heat exchanger as described above, characterized in that: the right side apron on be equipped with the water inlet that the rivers passageway head end is linked together, the right side apron on be provided with cavity and with the terminal right reservoir chamber that is linked together of rivers passageway, the left side apron on be equipped with hollow left reservoir chamber, left apron and right apron between be provided with the outer heat transfer pipe that is linked together with left reservoir chamber and right reservoir chamber, the left side apron on be provided with the delivery port that left reservoir chamber is linked together for cold water gets into from the water inlet and loops through behind rivers passageway, right reservoir chamber, outer heat transfer pipe, left reservoir chamber and gets into in the delivery port.

The heat exchanger as described above, characterized in that: the right side apron on be provided with the passageway entry that is linked together with rivers passageway head end and the passageway export that is linked together with rivers passageway end, the passageway entry with the water inlet be linked together, the right side apron on be provided with the reservoir chamber entry that right reservoir chamber is linked together, the right side apron on be connected with the connecting pipe, connecting pipe one end be connected with the passageway export and the other end is connected with the reservoir chamber entry, make right reservoir chamber and rivers passageway end be linked together.

The heat exchanger as described above, characterized in that: the right cover plate is provided with a relatively narrow bypass channel communicated with the channel inlet and the channel outlet, so that water at the channel inlet and water at the channel outlet can be mixed with each other when water in the water channel is relatively static.

The heat exchanger as described above, characterized in that: a heat exchange fin group used for absorbing heat is arranged in the combustion chamber, and the inner heat exchange tube is arranged in the heat exchange fin group in a penetrating mode.

The heat exchanger as described above, characterized in that: the right outer cover plate is provided with a third water tank, the right outer cover plate covers the right inner cover plate to enable the wall of the third water tank and the right inner cover plate to be enclosed, the left outer cover plate is provided with a fourth water tank, and the left inner cover plate covers the left outer cover plate to enable the wall of the fourth water tank and the left outer cover plate to be enclosed.

The heat exchanger as described above, characterized in that: and a turbulence strip and a damping spring which can disturb water flow are arranged in the inner heat exchange tube.

The heat exchanger as described above, characterized in that: the heat exchange plate group comprises a plurality of laminated sheet-shaped heat exchange plates.

The heat exchanger as described above, characterized in that: the heat exchanger on be provided with the confession the interior heat exchange tube wear to establish first mounting hole, the heat exchanger on still be provided with the heat insulating hole that prevents the fin local heating.

Compared with the prior art, the invention has the following advantages:

1. according to the heat exchanger, only the hollow first drainage chamber and the hollow second drainage chamber are required to be processed on the shell, the heat exchanger is realized without a U-shaped pipe or special-shaped pipe splicing structure, the structure is simpler and more reliable, the space is saved, the first drainage chamber and the second drainage chamber are directly processed on the shell, the material cost is reduced, and water can more fully absorb heat on the shell through the first drainage chamber and the second drainage chamber, so that the energy utilization rate is improved.

2. The heat exchanger is provided with the right water storage chamber and the left water storage chamber, so that cold water enters from the water inlet and enters the water outlet after passing through the water flow channel, the right water storage chamber, the outer heat exchange pipe and the left water storage chamber in sequence, water in the left water inlet chamber and the right water inlet chamber can absorb heat generated by the left cover plate and the right cover plate and fully absorb heat generated by the combustion chamber, energy waste caused by directly dissipating the heat outwards by the left cover plate and the right cover plate is reduced, the energy utilization rate is improved, meanwhile, a large amount of water in the right water storage chamber 104 and the left water storage chamber 103 is stored, when the flow rate of the water changes suddenly due to sudden change of water pressure of tap water, the stored water has the functions of mixing and relaxing warm water and cold water, and the temperature of outlet water is prevented from rising suddenly or falling suddenly.

3. The shell, the heat exchange plate set and the inner heat exchange tube of the heat exchanger are all made of stainless steel, tap water generally contains electrolyte solution, the electrolyte solution and a copper tube form a primary battery, the pitting phenomenon in typical electrochemical corrosion occurs, brittle verdigris is formed, the copper tube is gradually corroded to cause perforation of the oxygen-free copper tube, the oxygen-free copper heat exchanger in certain serious areas is corroded to perforate in a short period and a middle period in use, and water leakage is caused, and when the shell 1 is made of the stainless steel, the first drainage chamber and the second drainage chamber can uniformly and effectively absorb heat of the shell 1, heat loss is greatly reduced, so that the structure can greatly reduce metal corrosion risks while keeping high energy utilization rate.

[ description of the drawings ]

FIG. 1 is a schematic perspective view of a heat exchanger of the present invention;

FIG. 2 is an exploded schematic view of the heat exchanger of the present invention;

FIG. 3 is a schematic representation of the heat exchanger of the present invention;

FIG. 4 is a schematic view of the distribution of the inner heat exchange tubes of the present invention;

FIG. 5 is a left side view of the left cover plate of the present invention;

FIG. 6 is a right side view of the right cover plate of the present invention;

FIG. 7 is an exploded schematic view of the inner heat exchange tube of the right cover plate of the present invention;

fig. 8 is an exploded view of a heat exchanger plate package of the present invention.

[ detailed description ] embodiments

The invention is further described below with reference to the accompanying drawings:

the orientations of the present specification, such as "upper", "lower", "left", "right", "front", "back", etc., are based on the orientation of the drawings, and are for the purpose of describing the relationship between the respective components, and do not indicate a unique or absolute positional relationship between the respective components, but merely indicate one embodiment of the present invention, and do not limit the embodiments thereof.

As shown in fig. 1 and 2, a novel heat exchanger for a water heater comprises a housing 1, the housing 1 encloses into a combustion chamber 10 for gas combustion to release heat, the combustion chamber 10 is internally provided with a plurality of inner heat exchange tubes 3 for heating, two ports of each inner heat exchange tube 3 are respectively connected to the left part and the right part of the housing 1, the left part and the right part of the housing 1 are respectively provided with a plurality of hollow first drainage chambers 101 and second drainage chambers 102, and the plurality of inner heat exchange tubes 3 are sequentially communicated end to end through the first drainage chambers 101 and the second drainage chambers 102 to form a water flow channel 100 for water flow to pass through. For example, as shown in fig. 3, the right ends of the first inner heat exchange tube 3 and the second inner heat exchange tube 3 are simultaneously communicated with a second drainage chamber 102, then the left end of the second inner heat exchange tube 3 is communicated with the third inner heat exchange tube 3 through the first drainage chamber 101, and so on, to form a water flow channel 100, the head end and the tail end of the water flow channel 100 are provided with a water inlet and a water outlet, so as to heat the inner heat exchange tubes 3 and then lead out the heated hot water, thus only the hollow first drainage chamber 101 and the second drainage chamber 102 need to be processed on the housing 1, the structure of splicing a U-shaped tube or a special-shaped tube is not needed, the structure is simpler and more reliable, the space is saved, the first drainage chamber 101 and the second drainage chamber 102 are directly processed on the housing 1, the material cost is reduced, and the water flow can more fully absorb the heat on the housing 1 through the first drainage chamber 101 and the second drainage chamber 102, the energy utilization rate is improved.

As an embodiment of the casing 1, as shown in fig. 2, the casing 1 includes a left cover plate 11, a right cover plate 12, a front wall plate 13, and a rear wall plate 14, the left cover plate 11 includes a left outer cover plate 111 and a left inner cover plate 112, the left outer cover plate 111 is provided with a first concave sink 1111, the left outer cover plate 111 is covered on the left inner cover plate 112 such that the first drain chamber 101 is defined between the wall of the first sink 1111 and the left inner cover plate 112, the left inner cover plate 112 is provided with an inner heat exchange tube hole 5 at a position corresponding to the first sink 1111 for inserting an inner heat exchange tube 3 into the first drain chamber 101, the right cover plate 2 includes a right outer cover plate 121 and a right inner cover plate 122, the right outer cover plate 121 is provided with a second concave sink 1211, the right outer cover plate 121 is covered on the right inner cover plate 122 such that the second drain chamber 102 is defined between the wall of the second sink 1211 and the right inner cover plate 122, the right inner cover plate 122 is also provided with an inner heat exchange tube hole 5 for inserting an inner heat exchange tube 3 into the second drainage chamber 102 at a position corresponding to the second water tank 1211, the left outer cover plate 111 and the left inner cover plate 112 can be covered and connected together in a welding, bonding and other modes, the left outer cover plate 111 can be punched outwards and leftwards to form a concave first water tank 1111, so that the structure is simple and reliable, application and production processing are facilitated, U-shaped tubes arranged outside the shell 1 are reduced, heat dissipation is reduced, in addition, the structure is smoother and smaller, and the inside of the whole machine is simpler and more attractive.

As a more preferable embodiment, as shown in fig. 2, a water inlet 123 communicated with the head end of the water flow channel 100 is provided on the right cover plate 12, a right water storage chamber 104 which is hollow and communicated with the tail end of the water flow channel 100 is provided on the right cover plate 12, a hollow left water storage chamber 103 is provided on the left cover plate 11, an outer heat exchange tube 4 communicated with the left water storage chamber 103 and the right water storage chamber 104 is provided between the left cover plate 11 and the right cover plate 12, a water outlet 113 communicated with the left water storage chamber 103 is provided on the left cover plate 11, so that cold water enters from the water inlet 123 and passes through the water flow channel 100, the right water storage chamber 104, the outer heat exchange tube 4 and the left water storage chamber 103 and then enters the water outlet 113, thus, water in the left water inlet chamber 103 and the right water inlet chamber 104 can absorb heat generated by the left cover plate 11 and the right cover plate 12, and fully absorb heat generated by the combustion chamber 10, the energy waste that causes because of left side apron 11 and right side apron 12 are direct outwards dispels the heat is reduced, improves energy utilization, simultaneously, because can store a large amount of water in right reservoir chamber 104 and the left reservoir chamber 103, when the water pressure of running water changes suddenly and makes the velocity of flow sudden change of water, the water of storage plays the effect of the mixture of warm water and cold water, relaxes for the temperature of play water is unlikely to suddenly rising or the suddenly drop.

As one embodiment, as shown in fig. 2 and 6, the right cover plate 12 is provided with a channel inlet 1001 communicated with the head end of the water flow channel 100 and a channel outlet 1002 communicated with the tail end of the water flow channel 100, the channel inlet 1001 is communicated with the water inlet 123, the right cover plate 12 is provided with a water storage chamber inlet 1041 communicated with the right water storage chamber 104, the right cover plate 12 is connected with a connecting pipe 124, one end of the connecting pipe 124 is connected with the channel outlet 1002, and the other end of the connecting pipe 124 is connected with the water storage chamber inlet 1041, so that the right water storage chamber 104 is communicated with the tail end of the water flow channel 100.

As a more preferable embodiment, as shown in fig. 2 and 6, the right cover plate 12 is provided with a relatively narrow bypass channel 105 communicating the channel inlet 1001 and the channel outlet 1002, so that when water in the water channel 100 is relatively static, the water at the channel inlet 1001 and the water at the channel outlet 1002 can be mixed with each other, the bypass channel 125 has a small water cross section, when water flows, because the liquid has a characteristic of flowing in a direction with small resistance, the bypass channel 105 hardly influences the main water channel due to the narrow cross section, when the water heater is shut down, the water flow in the tube is static, the bypass channel 125 can mix and neutralize the cold water at the channel inlet 1001 and the high temperature water at the channel outlet 1002, so that the water temperature of the high temperature water at the channel outlet 1002 is reduced, and the water temperature inside the inner heat exchange tube 3 is increased due to the continuous heating of the heat exchange plate group 2 when the water flow is static, the water heater can prevent the water from being influenced by overhigh temperature and even injuring human bodies when the water heater is opened again.

Preferably, the right outer cover plate 121 is provided with a third water tank 1212, the right outer cover plate 121 is covered on the right inner cover plate 122 to enclose the right water inlet chamber 104 between the tank wall of the third water tank 1212 and the right inner cover plate 122, the left outer cover plate 111 is provided with a fourth water tank 1112, the left inner cover plate 112 is covered on the left outer cover plate 111 to enclose the left water inlet chamber 103 between the tank wall of the fourth water tank 1112 and the left outer cover plate 111, the right outer cover plate 121 and the right inner cover plate 122 are covered and connected together by welding, bonding and other methods, and the left outer cover plate 111 of the left inner cover plate 112 is covered and connected together by welding, bonding and other methods, so that the structure is stable and reliable, and is convenient for application and production processing.

As an arrangement mode of the inner heat exchange tubes 3, as shown in fig. 4, 5 and 6, part or all of the inner heat exchange tubes 3 are arranged in an upper layer, a middle layer and a lower layer in an upper and lower direction, wherein the inner heat exchange tube 3 positioned in the lower layer has at least an inner heat exchange tube a, an inner heat exchange tube b and an inner heat exchange tube c, the inner heat exchange tube 3 positioned in the middle layer has at least an inner heat exchange tube d and an inner heat exchange tube e, the inner heat exchange tube 3 positioned in the upper layer has at least an inner heat exchange tube f, an inner heat exchange tube g and an inner heat exchange tube h, the inner heat exchange tube a is communicated with the water inlet 123, the first drainage chambers 101 have at least four, which are respectively a first drainage chamber U, a first drainage chamber V, a first drainage chamber M and a first drainage chamber N, and the second drainage chambers 102 have at least three, which are respectively a second drainage; the water inlet 123, the inner heat exchange tube a, the first drainage chamber U, the inner heat exchange tube d, the second drainage chamber X, the inner heat exchange tube b, the first drainage chamber V, the inner heat exchange tube e, the second drainage chamber Y, the inner heat exchange tube c, the first drainage chamber M, the inner heat exchange tube h, the second drainage chamber Z, the inner heat exchange tube g, the first drainage chamber N and the inner heat exchange tube f are sequentially connected end to end, so that water flows in the inner heat exchange tubes 3 of the middle layer and the lower layer in a reciprocating mode and then enters the inner heat exchange tubes 3 of the upper layer, and as the position of common gas combustion is arranged below the inner heat exchange tubes 3, the water flow in the inner heat exchange tubes firstly absorbs gas heat generated by relatively high-temperature combustion of the lower layer and the middle layer, and flows in a reciprocating mode between the lower layer and the middle layer to absorb high-temperature air heat of the height and then bends to the upper layer, the heat brought by the combustion of the gas is fully utilized, and the utilization efficiency of the energy is improved. Note: the reference numerals of the inner heat exchange tube A, the inner heat exchange tube B, the inner heat exchange tube C, the inner heat exchange tube D, the inner heat exchange tube E, the first drainage chamber U, the first drainage chamber V, the second drainage chamber X, the second drainage chamber Y and the second drainage chamber Z are respectively a, B, C, D, E, U, V, X, Y and Z; the reference symbol p indicates the direction of water flow.

As a more preferred embodiment, as shown in fig. 7, a turbulence strip 31 and a damping spring 32 capable of disturbing flow of water flow are arranged in the inner heat exchange tube 3, the turbulence strip 31 can be twisted into a twist shape or other shapes with turbulence effect as shown in fig. 7, so as to increase the turbulence of water flow in the tube, improve the heat exchange effect, and the damping spring 32 can reduce noise generated by high-temperature gasification of water flow in the heat exchange tube, thereby playing a role in damping and damping.

As a more preferable embodiment, as shown in fig. 8, the heat exchanger plate group 2 includes a plurality of laminated thin plate-like heat exchanger plates 21, the heat exchanger plates 21 are uniformly and equidistantly arranged, and a gap for air circulation is formed between two adjacent heat exchanger plates 21, so as to more effectively absorb heat in high-temperature air and improve energy utilization efficiency.

As a more preferable embodiment, as shown in fig. 8, a first mounting hole 211 is formed in the heat exchanger plate 21 for the inner heat exchange tube 3 to penetrate through, a heat insulation hole 212 is further formed in the heat exchanger plate 21 for preventing the heat sink from locally generating heat, and the heat insulation hole 212 does not absorb heat, so that a part of high-temperature gas continuously rises to the position of the upper inner heat exchange tube 3 to prevent the heat from being concentrated on the heat exchanger plate 21.

Preferably, the heat exchanger according to any one of claims 1 to 9, wherein the outer shell 1, the heat exchanger fin group 2 and the inner heat exchange tube 3 are made of stainless steel, tap water generally contains electrolyte solution, the electrolyte solution and copper tube form a galvanic cell, and pitting phenomenon in typical electrochemical corrosion occurs to form brittle verdigris and gradually corrode, which leads to perforation of oxygen-free copper water tube, and the oxygen-free copper heat exchanger in some severe regions is corroded and penetrated in a short and medium period of use of the oxygen-free copper heat exchanger to generate water leakage phenomenon, while the outer shell 1 is made of stainless steel, because the first drainage chamber 101 and the second drainage chamber 102 can uniformly and effectively absorb heat of the outer shell 1, heat loss is greatly reduced, so that the structure can greatly reduce metal corrosion risk while maintaining higher energy utilization rate.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A novel heat exchanger for a water heater, characterized in that: including shell (1), shell (1) enclose into a combustion chamber (10) that supplies the gas combustion to release heat, combustion chamber (10) in be equipped with many interior heat exchange tubes (3) that are used for being heated, interior heat exchange tube (3) both ends mouth connect respectively in the left part and the right part of shell (1), the left part and the right part of shell (1) be provided with first drainage room (101) of a plurality of and second drainage room (102) respectively, many interior heat exchange tube (3) between be linked together end to end in proper order through first drainage room (101) and second drainage room (102) and form a rivers passageway (100) that supply rivers to pass through.

2. The heat exchanger of claim 1, wherein: the shell (1) comprises a left cover plate (11), a right cover plate (12), a front wall plate (13) and a rear wall plate (14), wherein the left cover plate (11) comprises a left outer cover plate (111) and a left inner cover plate (112), a first concave water tank (1111) is arranged on the left outer cover plate (111), the left outer cover plate (111) is covered on the left inner cover plate (112) to enable the wall of the first water tank (1111) and the left inner cover plate (112) to be surrounded into the first drainage chamber (101), an inner heat exchange pipe hole (5) for an inner heat exchange pipe (3) to be inserted into the first drainage chamber (101) is arranged at the position corresponding to the first water tank (1111) on the left inner cover plate (112), the right cover plate (2) comprises a right outer cover plate (121) and a right inner cover plate (122), a second concave water tank (1211) is arranged on the right outer cover plate (121), the right outer cover plate (121) is covered on the right inner cover plate (122) to enable the wall of the second water tank (1211) and the right inner cover plate (122) to form the second drainage chamber (102), and the right inner cover plate (122) is also provided with an inner heat exchange pipe hole (5) for inserting an inner heat exchange pipe (3) into the second drainage chamber (102) at the position corresponding to the second water tank (1211).

3. The heat exchanger of claim 2, wherein: right side apron (12) on be equipped with rivers passageway (100) head end water inlet (123) that are linked together, right side apron (12) on be provided with the cavity and with rivers passageway (100) terminal right reservoir chamber (104) that are linked together, left side apron (11) on be equipped with hollow left reservoir chamber (103), left side apron (11) and right apron (12) between be provided with left reservoir chamber (103) and right reservoir chamber (104) outer heat transfer pipe (4) that are linked together, left side apron (11) on be provided with delivery port (113) that left reservoir chamber (103) are linked together for cold water gets into from water inlet (123) and loops through behind rivers passageway (100), right reservoir chamber (104), outer heat transfer pipe (4), left reservoir chamber (103) and gets into in delivery port (113).

4. The heat exchanger of claim 3, wherein: right side apron (12) on be provided with passageway entry (1001) that is linked together with rivers passageway (100) head end and export (1002) with the terminal passageway that is linked together of rivers passageway (100), passageway entry (1001) be linked together with water inlet (123), right side apron (12) on be provided with right reservoir chamber (104) reservoir chamber entry (1041) that are linked together, right side apron (12) on be connected with connecting pipe (124), connecting pipe (124) one end be connected with passageway export (1002) and the other end is connected with reservoir chamber entry (1041), make right reservoir chamber (104) and rivers passageway (100) end be linked together.

5. The heat exchanger of claim 4, wherein: the right cover plate (12) is provided with a relatively narrow bypass channel (125) which is communicated with the channel inlet (1001) and the channel outlet (1002), so that water at the channel inlet (1001) and water at the channel outlet (1002) can be mixed with each other when water in the water flow channel (100) is relatively static.

6. The heat exchanger of any one of claims 1 to 5, wherein: a heat exchange fin group (2) for absorbing heat is arranged in the combustion chamber (10), and the inner heat exchange tube (3) penetrates through the heat exchange fin group (2).

7. The heat exchanger of claim 3, wherein: the water storage device is characterized in that a third water tank (1212) is arranged on the right outer cover plate (121), the right outer cover plate (121) is covered on the right inner cover plate (122) to enable the wall of the third water tank (1212) and the right inner cover plate (122) to be enclosed into a right water storage chamber (104), a fourth water tank (1112) is arranged on the left outer cover plate (111), and the left inner cover plate (112) is covered on the left outer cover plate (111) to enable the wall of the fourth water tank (1112) and the left outer cover plate (111) to be enclosed into a left water storage chamber (103).

8. The heat exchanger of claim 1, wherein: the inner heat exchange tube (3) is internally provided with a turbulence strip (31) and a damping spring (32) which can disturb water flow.

9. The heat exchanger of claim 1, wherein: the heat exchange plate group (2) comprises a plurality of laminated heat exchange plates (21).

10. The heat exchanger of claim 8, wherein: the heat exchange fin (21) is provided with a first mounting hole (211) for the inner heat exchange tube (3) to penetrate through, and the heat exchange fin (21) is also provided with a heat insulation hole (212) for preventing the heat radiating fin from locally heating.