CN208765235U - Water heater - Google Patents

Abstract

The utility model discloses a kind of water heater, the water heater includes: main body bottom case；Heating main body, the heating main body are mounted on before the main body bottom case；Flue shell, the flue shell have flue bottom case, and the flue bottom case is located at the top of the main body bottom case, and the lower end of the flue bottom case connects the upper end of the main body bottom case.According to the water heater of the utility model embodiment, flue shell is taken full advantage of, it can be with less bottom case materials, save the cost.

Description

Water heater

Technical field

The present invention relates to fields of home appliance technology, and in particular to a kind of water heater.

Background technique

In the related technology, in order to guarantee that the installation of water heater is stablized, the bottom case of water heater is extended to from the bottom of water heater The top of flue shell, bottom case is longer, but flue shell itself is not used effectively, and causes the waste of material.

Summary of the invention

The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention One purpose is to propose a kind of water heater that materials are less.

Water heater according to an embodiment of the present invention, the water heater include: main body bottom case；Heating main body, the fever master Body is mounted on before the main body bottom case；Flue shell, the flue shell have flue bottom case, and the flue bottom case is located at described The top of main body bottom case, and the lower end of the flue bottom case connects the upper end of the main body bottom case.

Water heater according to an embodiment of the present invention takes full advantage of flue shell, can be with less bottom case materials, save the cost.

In addition, water heater according to the above embodiment of the present invention can also have the following additional technical features:

According to one embodiment of present invention, the trailing flank of the flue shell and the trailing flank of the main body bottom case are substantially neat It is flat.

According to one embodiment of present invention, in projection from front to back, a part of the flue shell and the master Body bottom case is overlapped.

According to one embodiment of present invention, the lower end of the flue shell has interconnecting piece, the interconnecting piece and the master Body bottom case is connected, and the interconnecting piece described in projection from front to back is overlapped with the main body bottom case.

According to one embodiment of present invention, the main body bottom case and the flue bottom case vertically extend.

According to one embodiment of present invention, in the left side of the main body bottom case, right edge, upper side edge and lower side There are multilayer folded edges at least one.

According to one embodiment of present invention, the main body bottom case includes: the first bottom plate, the left and right sides of first bottom plate While all having the first flanging extended forward, and the front side edge of first flanging has the second flanging to extend internally.

According to one embodiment of present invention, it is first recessed that at least one is formed on a side surface of first flanging It falls into, and is formed with convex closure corresponding with first recess on another side surface opposite on first flanging.

According to one embodiment of present invention, the medial surface of first flanging forms first recess.

According to one embodiment of present invention, it is formed with the second recess on the leading flank of first bottom plate, described second Recess is connected to first recess.

According to one embodiment of present invention, the inner side edge of second flanging has the third flanging extended forward, institute It states and forms open slot between the upper end of third flanging and second flanging, the lower edge of the flue bottom case is caught in the opening Slot.

According to one embodiment of present invention, the third flanging is adjacent to the upper edge of second flanging.

According to one embodiment of present invention, second flanging includes the first auxiliary section and the second auxiliary section, and described the Two matching parts are connected in the top of first auxiliary section, third flanging with first auxiliary section, second auxiliary section Inner side edge stretch out the inner side edge of first auxiliary section, the flue bottom case is connected with second auxiliary section.

According to one embodiment of present invention, the flue bottom case is connect with second auxiliary section screw.

According to one embodiment of present invention, the flue bottom case includes: the second bottom plate, the left and right sides of second bottom plate While all having the Fourth Fold to extend back, the Fourth Fold is set to the outside of first flanging, and the Fourth Fold Inner surface recline with the outer surface of corresponding first flanging, and second flanging reclines with second bottom plate.

According to one embodiment of present invention, second bottom plate is following with the 5th flanging extended forward, described 5th flanging is posted by the inside of the third flanging.

According to one embodiment of present invention, there is reinforcing rib on the main body bottom case.

According to one embodiment of present invention, it is stamped and formed out at least one described second recess on the main body bottom case, uses In forming the reinforcing rib on the surface in the main body bottom case.

According to one embodiment of present invention, second recess and the reinforcing rib are both formed in the main body bottom case In front surface.

According to one embodiment of present invention, the reinforcing rib include the first convex block vertically extended and along left and right The second convex block that direction extends, and described second is recessed around first convex block and the second convex block.

According to one embodiment of present invention, first convex block is symmetrical about second convex block.

According to one embodiment of present invention, the reinforcing rib further includes third convex block, and the third convex block is located at described The underface of first convex block, and described second is recessed around the third convex block.

According to one embodiment of present invention, the reinforcing rib further includes the 4th convex block, and the 4th convex block is located at described The lower section of third convex block, and the 4th convex block extends to the left and right side of the main body bottom case.

According to one embodiment of present invention, the 4th convex block has bridge portion and pier portion, and the pier portion is set to the master The left and right side of body bottom case, the pier portion are connected by the bridge portion.

According to one embodiment of present invention, the left and right sides upper end of the flue bottom case has hook.

According to one embodiment of present invention, the main body bottom case metal plate is integrally formed.

According to one embodiment of present invention, the flue shell metal plate is integrally formed.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of water heater according to an embodiment of the invention；

Fig. 2 is the main view of water heater according to an embodiment of the invention；

Fig. 3 is the side view of water heater according to an embodiment of the invention；

Fig. 4 is the connection schematic diagram of main body bottom case and flue bottom case according to an embodiment of the invention；

Fig. 5 is enlarged drawing at A in Fig. 4；

Fig. 6 is the rearview of main body bottom case and flue bottom case according to an embodiment of the invention；

Fig. 7 is the side view of main body bottom case and flue bottom case according to an embodiment of the invention；

Fig. 8 is main body bottom case stereoscopic schematic diagram according to an embodiment of the invention；

Fig. 9 is main body bottom case front view according to an embodiment of the invention.

Appended drawing reference:

Water heater 100,

Main body bottom case 10, the first bottom plate 11, the second recess 111, reinforcing rib 112, the first convex block 1121, the second convex block 1122, third convex block 1123, the 4th convex block 1124, pier portion 11241, bridge portion 11242, the first flanging 12, first recess 121, it is convex Packet 122, the second flanging 13, the first auxiliary section 131, the second auxiliary section 132, third flanging 14, open slot 15,

Heating main body 20,

Flue shell 30, flue bottom case 31, the second bottom plate 311, Fourth Fold 312, the 5th flanging 313, hook 314.

Specific embodiment

In the related technology, in order to guarantee that the installation of water heater is stablized, the bottom case of water heater is extended to from the bottom of water heater The top of flue shell, bottom case is longer, but flue shell itself is not used effectively, and causes the waste of material.

To solve the above-mentioned problems, the invention proposes a kind of water heaters 100.

The embodiment of the present invention is described below in detail, the example of embodiment is shown in the accompanying drawings, wherein identical from beginning to end Or similar label indicates same or similar element or element with the same or similar functions.It is retouched below with reference to attached drawing The embodiment stated is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.

Water heater 100 according to an embodiment of the present invention is described referring to Fig. 1-Fig. 9, as shown in Figure 1, Figure 2 and Figure 3, heat Hydrophone 100 substantially may include main body bottom case 10, heating main body 20 and flue shell 30.

Specifically, heating main body 20 is mounted on before main body bottom case 10 as shown in Fig. 1 combination Fig. 4, Fig. 6 and Fig. 7, Flue shell 30 has flue bottom case 31, and flue bottom case 31 is located at the top of main body bottom case 10, and the lower end connection of flue bottom case 31 The upper end of main body bottom case 10.

Wherein, main body bottom case 10 forms flue, heating main body for installing and supporting heating main body 20 inside flue shell 30 Water heater 100 is discharged by flue in the cigarette that 20 internal heat generations produce.And the lower end connection main body bottom case 10 of flue bottom case 31 is upper End, that is to say, that flue bottom case 31 is connect with main body bottom case 10, in this way, flue bottom case 31 can also be used to support water heater 100.It is understood that therefore most of weight that the heating main body 20 of water heater 100 occupies water heater 100 works as hot water When device 100 is hung on wall, only by main body bottom case 10 come support heating main body 20 be it is unstable, by flue bottom case 31 and main body Bottom case 10 is connected, and is equivalent to and displaced moiety by weight to flue bottom case 31, in this way, again becoming stable water heater 100.Separately Outside, flue bottom case 31 can also be made full use of, material is saved.

Water heater 100 according to an embodiment of the present invention, 30 base friend's flue bottom case 31 of flue shell, by by flue bottom case 31 with Main body bottom case 10 is connected, and can make full use of flue shell 30, material is saved, to reduce production cost.

In some embodiments, as shown in fig. 7, as shown in Fig. 5, Fig. 6 and Fig. 7, the trailing flank of flue shell 30 and main body bottom case 10 trailing flank is substantially flush.It is understood that when water heater 100 is affiliated to when wall, since metope is plane, flue bottom The trailing flank of shell 31 and main body bottom case 10 is connect with metope, and the trailing flank of flue bottom case 31 and main body bottom case 10 is arranged to substantially It flushes, can be convenient installation, flue bottom case 31 and 10 uniform force of main body bottom case can also be made.Wherein, the rear side of flue bottom case 31 Face is substantially flush with the trailing flank of main body bottom case 10 to be referred to and can flush or not flush, that is, not influencing installation and steady In the case where fixed, to the extent permitted by the error, it is that can receive that flue bottom case 31 does not flush with the trailing flank of main body bottom case 10 's.

In some preferred embodiments, as shown in Fig. 5, Fig. 6 and Fig. 7 and Fig. 8, a part and main body bottom case of flue shell 30 10 are overlapped.That is, the part upper end of the part lower end of flue bottom case 31 and main body bottom case 10, in projection from front to back It is overlapped.When flue bottom case 31 is connect with main body bottom case 10, intersection can increase flue bottom case 31 and main body bottom case 10 Contact area keeps sealing performance more preferable, prevents the escape of heat, can also be improved bonding strength, makes its stable connection.

In some embodiments, the lower end of flue shell 30 has interconnecting piece, and interconnecting piece is connected with main body bottom case 10, and in the past Interconnecting piece is overlapped with main body bottom case 10 in projection backward.Interconnecting piece is used to connect main body bottom case 10 and flue bottom case 31, namely The intersection of main body bottom case 10 and flue bottom case 31 improves main body bottom case 10 for connecting flue bottom case 31 and main body bottom case 10 With the bonding strength of the interconnecting piece of flue bottom case 31, connect more stable.

In some specific embodiments, as shown in fig. 7, main body bottom case 10 and flue bottom case 31 vertically extend.This Sample, water heater 100 are affiliated to when metope, and main body bottom case 10, flue bottom case 31 and the contact area of metope are big, and stability is stronger.

In some alternative embodiments, as shown in Fig. 4, Fig. 6, Fig. 7 and Fig. 8 and Fig. 9, the left side of main body bottom case 10, the right side In side, upper side edge and lower side at least one at have multilayer folded edges.Main body bottom case can be improved in multilayer this side structure 10 structural strength increases its bearing load ability, keeps the structure of water heater 100 more stable.

In some alternative embodiments, in the left side of flue bottom case 31, right edge, upper side edge and lower side at least one at With multilayer folded edges.The structural strength of flue bottom case 31 can be improved in multilayer this side structure, increases its bearing load ability, Keep the structure of water heater 100 more stable.

In some specific embodiments, as shown in Fig. 6 combination Fig. 8 and Fig. 9, main body bottom case 10 include the first bottom plate 11, first The left and right side of bottom plate 11 all has the first flanging 12 extended forward, and the front side edge of the first flanging 12 has and to extend internally Second flanging 13.On the one hand, the first flanging 12 and the second flanging 13 strengthen the structural strength of main body bottom case 10；On the other hand, The second flanging 13 to extend internally is parallel with the first bottom plate 11, when main body bottom case 10 is connect with flue bottom case 31, the second flanging 13 Joint face is formd, can be used for supporting flue bottom case 31, reinforces the stability of connection.

In one specific embodiment, as shown in Figure 8 and Figure 9, at least one is formed on a side surface of the first flanging 12 First recess 121, and be formed on another side surface opposite on the first flanging 12 and the first 121 corresponding convex closures 122 of recess. It is understood that the side of the first flanging 12 forms recess, the corresponding formation protrusion in the other side, that is, protrusion is by flanging Side be recessed to be formed, without additionally increasing other components, convex closure 122 can reinforce the structural strength of the first flanging 12, make One flanging 12 has stronger bearing capacity.

Further, as shown in figure 8, the medial surface of the first flanging 12 forms the first recess 121.The outside of first flanging 12 Face with first recess 121 corresponding position form protrusion.It is of course also possible to be the first flanging 12 lateral surface formed it is first recessed Fall into 121, the medial surface of the first flanging 12 with first recess 121 corresponding position form protrusion.

Advantageously, the second recess 111, the second recess 111 and the first recess 121 are formed on the leading flank of the first bottom plate 11 Connection.First recess 121 and the second recess 111 can reinforce the structural strength of main body bottom case 10, in addition, the first recess of connection 121 and second recess 111 can be convenient production.

Certainly, above-described embodiment is only illustrative, and can not be interpreted as limiting the scope of the invention, for example, First recess 121 can not also be connected to the second recess 111.

In some embodiments, as shown in connection with fig. 8 such as Fig. 3, the inner side edge of the second flanging 13 has the third folding extended forward Side 14 forms open slot 15 between the upper end of third flanging 14 and the second flanging 13, the lower edge of flue bottom case 31 is caught in opening Slot 15.Namely 10 grafting of flue bottom case 31 and main body bottom case, open slot 15 can be convenient positioning, and installation is made to become simple.

In some preferred embodiments, third flanging 14 is adjacent to the upper edge of the second flanging 13.In this way, flue bottom case 31 is caught in When open slot 15, flue bottom case 31 is smaller in the coincidence part area of projection from front to back with main body bottom case 10, is reaching connection Purpose can save material simultaneously.

In one preferred embodiment, as shown in figure 8, the second flanging 13 includes the first auxiliary section 131 and the second auxiliary section 132, the second auxiliary section 132 is located at the top of the first auxiliary section 131, and third flanging 14 is connected with the first auxiliary section 131, and second matches The inner side edge in conjunction portion 132 stretches out the inner side edge of the first auxiliary section 131, and flue bottom case 31 is connected with the second auxiliary section 132.Namely the The width of the ecto-entad of two auxiliary sections 132 is greater than the width of the first auxiliary section 131 from outside to inside, and flue bottom case 31 is matched with second Conjunction portion 132 is connected, and contact area is bigger, and stability is higher.

Further, flue bottom case 31 is connect with 132 screw of the second auxiliary section.It is understood that due to the second cooperation The width of the ecto-entad in portion 132 is larger, is suitable for beating threaded hole.Open slot 15 is being caught in by the lower edge of flue bottom case 31 After Primary Location, flue bottom case 31 and the second auxiliary section 132 carry out screw connection again, further strengthen connective stability.

In some embodiments, as shown in figure 4, flue bottom case 31 includes the second bottom plate 311, the left and right sides of the second bottom plate 311 While all have the Fourth Fold 312 to extend back, Fourth Fold 312 is set to the outside of the first flanging 12, and Fourth Fold 312 Inner surface reclines with the outer surface of corresponding first flanging 12, and the second flanging 13 reclines with the second bottom plate 311.Fourth Fold 312 can reinforce the structural strength of flue bottom case 31, in addition, Fourth Fold 312 is photographed on the outside of the first flanging 12, and four fold Side 312 reclines with the first flanging 12, and the second flanging 13 reclines with the second bottom plate 311 namely Fourth Fold 312 plays guide body The effect of bottom case 10, and the second flanging 13 and the second bottom plate 311 recline and are used to support the second bottom plate 311.

Preferably, as shown in connection with fig. 5 such as Fig. 4, the following of the second bottom plate 311 has the 5th flanging 313 extended forward, the Five flangings are posted by the inside of third flanging.5th flanging 313 plays the role of positioning third flanging 14, can limit third folding The movement on side 14, to make flue bottom case 31 and 10 stable connection of main body bottom case.

In some embodiments, there is reinforcing rib 112 on main body bottom case 10.Reinforcing rib 112 can reinforce main body bottom case 10 Structural strength makes main body bottom case 10 have bigger bearing capacity.

In one specific embodiment, as shown in figure 8, being stamped and formed out at least one second recess 111 on main body bottom case 10, use In formation reinforcing rib 112 on the surface in main body bottom case 10.In this way, only need to be by the progress punching press of the original plate of main body bottom case 10 The second recess 111 can be formed, the other parts for removing the first recess 121 of the first bottom plate 11 are reinforcing rib 112, easy to process.

In some embodiments, the second recess 111 and reinforcing rib 112 are both formed in the front surface of main body bottom case 10.It can be with Understand, the first bottom plate 11 of main body bottom case 10 is main load portion, and the second recess 111 and reinforcing rib 112 are formed in master It can reinforce the structural strength of the first bottom plate 11 in the front surface of body bottom case 10.

Certainly, above-described embodiment is only illustrative, and can not be interpreted as limiting the scope of the invention, for example, Second recess 111 and reinforcing rib 112 can also be formed on the side surface of main body bottom case 10.

In some embodiments, as shown in figure 9, reinforcing rib 112 includes the first convex block 1121 vertically extended and edge The second convex block 1122 that left and right directions extends, and the second recess 111 is around the first convex block 1121 and the second convex block 1122.In this way, Punch forming is simple, and process is less.

Preferably, as shown in figure 9, the first convex block 1121 is symmetrical about the second convex block 1122.Symmetrical structure is in mold design Or it is all fairly simple when punch forming, production efficiency can be improved, 10 uniform force of main body bottom case can also be made.

Further, as shown in figure 9, reinforcing rib 112 further includes third convex block 1123, it is convex that third convex block 1123 is located at first The underface of block 1121, and the second recess 111 is around third convex block 1123.Multiple convex blocks form multiple reinforcing ribs 112, make main body The structural strength of bottom case 10 is high.

Further, as shown in figure 9, reinforcing rib 112 further includes the 4th convex block 1124, the 4th convex block 1124 is located at third The lower section of convex block 1123, and the 4th convex block 1124 extends to the left and right side of main body bottom case 10.Connect main body bottom case 10 or so two The reinforcing rib 112 of side can make the stable structure of main body bottom case 10, avoid main body bottom case 10 along the second 111 inside bendings of recess Situation occurs.

Advantageously, as shown in figure 9, the 4th convex block 1124 has bridge portion 11242 and pier portion 11241, pier portion 11241 is set to master The left and right side of body bottom case 10, pier portion 11241 are connected by bridge portion 11242.It is understood that pier portion 11241 makes the 4th convex block 1124 structural strength is got higher, and the 4th convex block 1124 can be made to have better bearing capacity, further prevent main body bottom case 10 Occur along the case where the second 111 inside bending of recess.

In some embodiments, as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 6 and Fig. 7, on the left and right sides of flue bottom case 31 End has hook 314.Water heater 100 can be affiliated on wall by hook 314, and flue bottom case 31 becomes stressed member, be saved Material, and can make the water heater 100 stabilization is installed on wall.

In some embodiments, 10 metal plate of main body bottom case is integrally formed.In other words, main body bottom case 10 is sheet metal component, and main body Bottom case 10 is integrated, to the original plate of main body bottom case 10 carries out punching press, flanging is included in integrated molding, in this way, subtracting Lack connecting component, reduced process, improves production efficiency.

In some embodiments, 30 metal plate of flue shell is integrally formed.In other words, flue shell 30 is sheet metal component, and flue shell 30 It is integrated, to the original plate of flue shell 30 carries out punching press, flanging is included in integrated molding, in this way, reducing connection Component reduces process, improves production efficiency.

The other compositions and principle of water heater 100 according to an embodiment of the present invention belong to those skilled in the art and are understood And be easy to get, details are not described herein.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three It is a etc., unless otherwise specifically defined.

In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below " One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples It closes and combines.

Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant.

Claims (26)

1. a kind of water heater, which is characterized in that the water heater includes:

Main body bottom case；

Heating main body, the heating main body are mounted on before the main body bottom case；

Flue shell, the flue shell have flue bottom case, and the flue bottom case is located at the top of the main body bottom case, and the cigarette The lower end of road bottom case connects the upper end of the main body bottom case.

2. water heater according to claim 1, which is characterized in that the trailing flank of the flue shell and the main body bottom case Trailing flank is substantially flush.

3. water heater according to claim 1, which is characterized in that in projection from front to back, the one of the flue shell Part is overlapped with the main body bottom case.

4. water heater according to claim 1, which is characterized in that the lower end of the flue shell has interconnecting piece, the company Socket part is connected with the main body bottom case, and the interconnecting piece described in projection from front to back is overlapped with the main body bottom case.

5. water heater according to claim 1, which is characterized in that the main body bottom case and the flue bottom case are vertically Direction extends.

6. water heater according to claim 1, which is characterized in that left side, right edge, the upper side edge of the main body bottom case With at least one in lower side have multilayer folded edges.

7. water heater according to claim 1, which is characterized in that the main body bottom case includes:

First bottom plate, the left and right side of first bottom plate all have the first flanging extended forward, and first flanging Front side edge has the second flanging to extend internally.

8. water heater according to claim 7, which is characterized in that be formed at least on a side surface of first flanging One first recess, and be formed on another side surface opposite on first flanging corresponding convex with first recess Packet.

9. water heater according to claim 8, which is characterized in that it is recessed that the medial surface of first flanging forms described first It falls into.

10. water heater according to claim 9, which is characterized in that be formed with second on the leading flank of first bottom plate Recess, second recess are connected to first recess.

11. water heater according to claim 7, which is characterized in that the inner side edge of second flanging, which has, to be extended forward Third flanging, form open slot between the upper end of the third flanging and second flanging, the flue bottom case it is following Edge is caught in the open slot.

12. water heater according to claim 11, which is characterized in that the third flanging is upper adjacent to second flanging Edge.

13. water heater according to claim 12, which is characterized in that second flanging includes the first auxiliary section and second Auxiliary section, second matching part are connected in the top of first auxiliary section, third flanging with first auxiliary section, institute The inner side edge for stating the second auxiliary section stretches out the inner side edge of first auxiliary section, the flue bottom case and second auxiliary section phase Even.

14. water heater according to claim 13, which is characterized in that the flue bottom case and second auxiliary section screw Connection.

15. water heater according to claim 11, which is characterized in that the flue bottom case includes:

Second bottom plate, the left and right side of second bottom plate all have the Fourth Fold to extend back, and the Fourth Fold is set to The outside of first flanging, and the inner surface of the Fourth Fold reclines with the outer surface of corresponding first flanging, and Second flanging reclines with second bottom plate.

16. water heater according to claim 15, which is characterized in that second bottom plate it is following have extend forward 5th flanging, the 5th flanging are posted by the inside of the third flanging.

17. water heater according to claim 10, which is characterized in that have reinforcing rib on the main body bottom case.

18. water heater according to claim 17, which is characterized in that be stamped and formed out at least one institute on the main body bottom case The second recess is stated, for forming the reinforcing rib on the surface of the main body bottom case.

19. water heater according to claim 18, which is characterized in that second recess and the reinforcing rib are both formed in In the front surface of the main body bottom case.

20. water heater according to claim 18, which is characterized in that the reinforcing rib includes vertically extended One convex block and the second convex block extended in left-right direction, and described second is recessed around first convex block and the second convex block.

21. water heater according to claim 20, which is characterized in that first convex block is about second convex block pair Claim.

22. water heater according to claim 20, which is characterized in that the reinforcing rib further includes third convex block, and described Three convex blocks are located at the underface of first convex block, and described second is recessed around the third convex block.

23. water heater according to claim 22, which is characterized in that the reinforcing rib further includes the 4th convex block, and described Four convex blocks are located at the lower section of the third convex block, and the 4th convex block extends to the left and right side of the main body bottom case.

24. water heater according to claim 23, which is characterized in that the 4th convex block has bridge portion and pier portion, described Pier portion is set to the left and right side of the main body bottom case, and the pier portion is connected by the bridge portion.

25. water heater according to claim 1, which is characterized in that the left and right sides upper end of the flue bottom case, which has, to hang Hook.

26. water heater described in any one of -25 according to claim 1, which is characterized in that

The main body bottom case metal plate is integrally formed；And/or

The flue shell metal plate is integrally formed.