CN205641550U - Water tank of water heater and have its water heater - Google Patents

Abstract

The utility model discloses a water tank of water heater and have its water heater. The water tank includes: the inner bag, the courage connects, the draft tube, the coupling, the single wire erection and extension device comprises a connecting piece, sealing member and prevent changeing the subassembly, the courage connects to be established on the inner bag, the one end of draft tube runs through and stretches into in the inner bag after the courage connects, it is outer and continuous with the other end of draft tube that the coupling is located the inner bag, the connecting piece is established on the coupling and is connected the cooperation with the courage and links to each other, sealing part sleeved establishes on the draft tube and is located between courage joint and the coupling, it establishes and connects at the courage to prevent changeing the subassembly, just be used for restricting sealing member and the relative circumferential direction of courage joint and the relative circumferential direction of sealing member and coupling on sealing member and the coupling. According to the utility model discloses a water tank of water heater, simple structure, the handling ease, and improved effectively, the hidden danger of leaking of outlet pipe, improved the operational reliability and the safety in utilization of water heater.

Description

The water tank of water heater and there is its water heater

Technical field

This utility model relates to water heater arrangement field, especially relates to the water tank of a kind of water heater and has its water heater.

Background technology

Pointing out in correlation technique, along with the raising day by day of quality of the life, people are to the safety in utilization of domestic hot-water, comfortableness Require higher.Inner bag as water-heater system stores the device of hot water, its safe and reliable water-tight be its most basic requirement, In inner-tube structure, water inlet pipe, outlet pipe are necessary designs, but, inlet tube and outlet tube and inner bag junction are it occur frequently that leak The problem of water, causes potential safety hazard.

Utility model content

This utility model is intended at least to solve one of technical problem present in prior art.

To this end, this utility model is to propose the water tank of a kind of water heater, the good sealing effect of the water tank of described water heater.

This utility model also proposes a kind of water heater with above-mentioned water tank.

According to the water tank of water heater of the present utility model, including: inner bag；Gallbladder joint, described gallbladder joint is located on described inner bag； Draft tube, one end of described draft tube extend in described inner bag after running through described gallbladder joint；Pipe joint, described pipe joint position And it is connected with the other end of described draft tube outside described inner bag；Connector, described connector be located on described pipe joint and with Described gallbladder joint coordinates and is connected；Sealing member, described sealing member is set on described draft tube and is positioned at described gallbladder joint with described Between pipe joint；And anti-rotation assembly, described anti-rotation assembly is located at described gallbladder joint, described sealing member and described pipe joint On, and described sealing member is relative with described gallbladder joint to be circumferentially rotated and described sealing member and described pipe joint for limiting Relatively circumferentially rotate.

According to the water tank of water heater of the present utility model, simple in construction, it is simple to processing, and effectively improve inlet tube and outlet tube With the leakage hidden trouble of inner bag junction, improve functional reliability and the safety in utilization of water heater.

In certain embodiments, described anti-rotation assembly includes spacer pin and the spacing hole that grafting coordinates.

In certain embodiments, described pipe joint is provided with described spacer pin, and described sealing member is formed the described of perforation shape Spacing hole, described gallbladder joint is formed the described spacing hole of blind hole shape.

In certain embodiments, the described spacing hole on described sealing member and the described spacer pin interference fit on described pipe joint.

In certain embodiments, described spacer pin and described pipe joint are detachably connected or integral part.

In certain embodiments, described anti-rotation assembly is many groups and opens in the circumferentially-spaced of draft tube.

In certain embodiments, described anti-rotation assembly is three groups and spaced apart in isosceles triangle in the circumference of described draft tube Distribution, or, described anti-rotation assembly is four groups and the spaced apart distribution in isosceles trapezoid in the circumference of described draft tube.

In certain embodiments, described gallbladder joint has the first end face of planar shaped, described pipe joint has planar shaped Second end face, described sealing member is folded between described first end face and described second end face.

In certain embodiments, described gallbladder joint is identical with the material of described inner bag and is weldingly connected.

In certain embodiments, described connector is set on described pipe joint and coordinates with described gallbladder joint screw thread.

According to water heater of the present utility model, including the water tank according to this utility model above-described embodiment.

Additional aspect of the present utility model and advantage will part be given in the following description, and part will become from the following description Obtain substantially, or recognized by practice of the present utility model.

Accompanying drawing explanation

Fig. 1 is the front schematic view of the water tank of the water heater according to this utility model embodiment；

Fig. 2 is the generalized section of line A-A along Fig. 1；

Fig. 3 is the B portion enlarged drawing that Fig. 2 centre circle shows, not shown draft tube；

Fig. 4 is the axonometric chart of the sealing member shown in Fig. 3.

Reference:

The water tank 100 of water heater；

Inner bag 1；Gallbladder joint 2；First end face 21；Blind hole 22；

Pipe joint 3；Second end face 31；Boss 32；Spacer pin 33；Draft tube 4；

Sealing member 5；Perforation 51；Connector 6；Axle sleeve section 61；End face section 62.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached The embodiment that figure describes is exemplary, it is intended to be used for explaining this utility model, and it is not intended that to limit of the present utility model System.

Following disclosure provides many different embodiments or example for realizing different structure of the present utility model.For letter Changing disclosure of the present utility model, hereinafter parts and setting to specific examples are described.Certainly, they are the most merely illustrative, And it is not intended to limit this utility model.Additionally, this utility model can in different examples repeat reference numerals and/or Letter.This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiment and/or arranging Relation.Additionally, the various specific technique that provides of this utility model and the example of material, but ordinary skill Personnel are it can be appreciated that the property of can be applicable to of other techniques and/or the use of other materials.

The water tank 100 of the water heater according to this utility model embodiment is described below with reference to Fig. 1-Fig. 4, it is to be understood that Water heater can be integral type structure or split-type structural.

As it is shown in figure 1, the water tank 100 of the water heater according to this utility model embodiment, including: inner bag 1, gallbladder joint 2, Draft tube 4, pipe joint 3, connector 6, sealing member 5 and anti-rotation assembly.

With reference to Fig. 3, gallbladder joint 2 is located on inner bag 1, and such as gallbladder joint 2 can be detachably connected with inner bag 1 or fix phase Even, such as, in an optional example of the present utility model, gallbladder joint 2 is identical with the material of inner bag 1 and is weldingly connected, from And realize being fixedly linked of gallbladder joint 2 and inner bag 1, the probability leaked with reduction, and, when gallbladder joint 2 and inner bag 1 When material is identical, such as, it is cast iron materials or is stainless steel material, gallbladder joint 2 and inner bag 1 can be effectively improved Welding quality and welding fixing.

With reference to Fig. 3, one end of draft tube 4 extend into after running through gallbladder joint 2 in inner bag 1, wherein, draft tube 4 can be into Water pipe or outlet pipe.When draft tube 4 is water inlet pipe (as shown in Figure 2), gallbladder joint 2 can be that water supply connector is (such as Fig. 2 Shown in), usual water supply connector is arranged on the bottom of inner bag 1 sidewall, and water inlet pipe is stretched into after in inner bag 1 by water supply connector can be to Lower extension (i.e. inverted "L" shaped), thus reduce the mixed water phenomenon that moisturizing causes.When draft tube 4 is outlet pipe (not shown Go out this example), gallbladder joint 2 can be water out adapter (this example not shown), and usual water out adapter is arranged on inner bag 1 side The top of wall, outlet pipe is stretched into after in inner bag 1 by water out adapter can upwardly extend (the most just " L " shape), thus improves heat Water output rating.

Pipe joint 3 is positioned at outside inner bag 1 and is connected with the other end of draft tube 4, and connector 6 is located on pipe joint 3 and and gallbladder Joint 2 coordinates and is connected.It is to say, the other end of draft tube 4 is provided with pipe joint 3, pipe joint 3 is by connector 6 It is fixed on gallbladder joint 2, thus realizes the fixing of draft tube 4.Such as in a concrete example of the present utility model, even Fitting 6 can be set on pipe joint 3 and threaded with gallbladder joint 2, say, that connector 6 can be limiting lock Jack panel, and be set on pipe joint 3 and gallbladder joint 2 screw-threaded coupling, thus significantly reduce fixing difficulty, improve Locking efficiency.

Specifically, with reference to Fig. 3, the periphery wall of gallbladder joint 2 is formed with external screw thread, the one of the neighbouring gallbladder joint 2 of pipe joint 3 End has boss 32, and connector 6 includes axle sleeve section 61 and the end face of the side away from gallbladder joint 2 being connected to axle sleeve section 61 Section 62, end face section 62 is formed perforation 51, the internal perisporium of axle sleeve section 61 is formed with female thread.Thus, during assembling, Connector 6 can be set on pipe joint 3 by the through hole in end face section 62, rotary connector 6 simultaneously, make axle sleeve section Female thread on 61 coordinates with screwing on gallbladder joint 2, until end face section 62 is only against connecing away from gallbladder of boss 32 The side of 2, pipe joint 3 can be fixed on gallbladder joint 2 by connector 6.

With reference to Fig. 2, sealing member 5 is set on draft tube 4 and between gallbladder joint 2 and pipe joint 3, say, that close Sealing 5 is for sealing cast, and the outer end of draft tube 4 is connected with pipe joint 3 with after sealing member 5, when gallbladder connects through gallbladder joint 2 After 2 put in place with pipe joint 3 assembling, sealing member 5 is to be folded between gallbladder joint 2 and pipe joint 3 surfaces opposite to each other , thus play the effect of sealing.

Preferably, the surfaces opposite to each other for sandwiched sealing member 5 of gallbladder joint 2 and pipe joint 3 are all formed as planar shaped Shape, such that it is able to that improves sealing member 5 and gallbladder joint 2 and pipe joint 3 contacts sealing area, improves sealing effectiveness further. Such as, as it is shown on figure 3, have the first end face 21 of planar shaped on gallbladder joint 2, say, that on the first end face 21 not It is provided with the structure such as boss, groove, pipe joint 3 has the second end face 31 of planar shaped, say, that the second end face 31 On be not provided with the structure such as boss, groove, the first end face 21 and the second end face 31 are positioned opposite to each other, and sealing member 5 is folded in Between first end face 21 and the second end face 31.

Specifically, in embodiment of the present utility model, the water tank 100 of water heater also includes that anti-rotation assembly, anti-rotation assembly set On gallbladder joint 2, sealing member 5 and pipe joint 3, and circumferentially rotate with the relative of gallbladder joint 2 for limiting sealing member 5 And sealing member 5 circumferentially rotates with the relative of pipe joint 3.It is to say, by arranging anti-rotation assembly, sealing member 5 and gallbladder Joint 2 will not occur relatively to circumferentially rotate, and sealing member 5 also will not occur relative circumferentially rotating with pipe joint 3, briefly, Any position of the sealing member 5 being set on draft tube 4, rotates all without in draft tube 4 circumference, thus, The problem that sealing member 5 during assembling deforms can be improved, thus improve the sealing reliability of sealing member 5.

Here, it should be noted that in the related, in order to ensure the sealing reliability of sealing member 5, need spacing Locking nut (connector 6 the most above) screws, and applicant has surprisingly found that, goes to tighten when using bigger moment During limiting locking nut, it is not provided with sealing member 5 meeting relative draft tube 4 turns under the drive of limiting locking nut of anti-rotation assembly Dynamic, so, under the frictional force effect between sealing member 5 and gallbladder joint 2 and pipe joint 3, sealing member 5 is easy to occur Distortion, fold, deformation, thus cause poor sealing, there is the hidden danger leaked.

The water tank 100 of the water heater according to this utility model embodiment, simple in construction, it is simple to processing, and effectively improve into, The leakage hidden trouble of outlet pipe, improves functional reliability and the safety in utilization of water heater.

In an embodiment of the present utility model, with reference to Fig. 3, anti-rotation assembly is located at gallbladder joint 2, sealing member 5 and pipe and connects On 3, and include spacer pin 33 and the spacing hole that grafting coordinates, say, that spacer pin on gallbladder joint 2, can be provided with 33 and/or spacing hole, sealing member 5 can be provided with spacer pin 33 and/or spacing hole, pipe joint 3 can also be provided with spacing Pin 33 and/or spacing hole.

Such as in a concrete example of the present utility model, when gallbladder joint 2 is provided only with spacer pin 33, pipe joint 3 and close Spacing hole only it is each formed with on sealing 5.The most such as in another concrete example of the present utility model, gallbladder joint 2 and pipe connect The most all it is simultaneously provided with spacer pin 33 and spacing hole on 3, sealing member 5 is provided only with spacing hole.Here, explanation is needed It is that those skilled in the art are after having read above technical scheme, it is clear that be appreciated that other plans of establishment of anti-rotation assembly, Here repeat no more.Certainly, this utility model is not limited to this, and anti-rotation assembly can be also configured to other structures, and may not set On gallbladder joint 2, sealing member 5 and pipe joint 3.

Alternatively, spacer pin 33 is knockdown pieces, thus, and convenient processing.Such as it is arranged on pipe joint 3 when spacer pin 33 Time upper, spacer pin 33 can detachably be connected with pipe joint 3, such as, can be to insert to be embedded on pipe joint 3；Such as When spacer pin 33 is arranged on gallbladder joint 2, spacer pin 33 can detachably be connected with gallbladder joint 2, the most permissible It is to insert to be embedded on gallbladder joint 2；Such as when spacer pin 33 is arranged on sealing member 5, spacer pin 33 and sealing member 5 can To be detachable being connected, such as, can be to insert to be embedded on sealing member 5.

Or alternatively, spacer pin 33 can also is that fixture, thus, reliability is high.Such as it is arranged on when spacer pin 33 Time on pipe joint 3, spacer pin 33 and pipe joint 3 can be fixedly linked, such as, can be part integral with pipe joint 3 's；Such as when spacer pin 33 is arranged on gallbladder joint 2, spacer pin 33 and gallbladder joint 2 can be fixedly linked, example As being part integral with gallbladder joint 2；Such as when spacer pin 33 is arranged on sealing member 5, spacer pin 33 is with close Sealing 5 can be fixedly linked, such as can part integral with sealing member 5.

In embodiments more of the present utility model, anti-rotation assembly is many groups and opens in the circumferentially-spaced of draft tube 4.The most just Being to say, the spacer pin 33 and the spacing hole that are mutually inserted cooperation are many groups and many groups and open in the circumferentially-spaced of draft tube 4.Thus, The layout of anti-rotation assembly is more preferable, easily facilitates processing and assembling, and anti-rotation reliability is higher.

Here, it should be noted that as above, draft tube 4 have during assembling certain directivity requirement (as When draft tube 4 makees water inlet pipe use, the opening of one end stretched in inner bag 1 of draft tube 4 is generally towards lower extension；And for example When draft tube 4 makees outlet pipe use, the opening of one end stretched in inner bag 1 of draft tube 4 is generally towards upper extension).Due to Draft tube 4 is usually fixed with pipe joint 3 and to be connected, thus only pipe joint 3 is arranged on gallbladder connects according to being correctly oriented On 2, just can ensure that the installation direction of draft tube 4 is correct.

But, in correlation technique, correct, generally at the first end face 21 of gallbladder joint 2 for guaranteeing the installation direction of pipe joint 3 On mill out an other than ring type positioning step, on pipe joint 3 process an other than ring type positioning boss coordinated with positioning step, So, when installing gallbladder joint 2 and pipe joint 3, point to requirement owing to the cooperation of positioning boss and positioning step has para-position, The most only according to when being correctly oriented installation pipe joint 3, just can ensure that positioning boss put in place with coordinating of positioning step, but It is, after machined positioning boss and positioning step, the sealing member 5 being folded between positioning boss and positioning step apparent surface Sealing contact surface just greatly reduce, particularly at positioning step, occur in that the sealing contact surface of sealing member 5 is the narrowest Hidden danger region, easily cause poor sealing, cause leakage hidden trouble.So, the sealing contact surface foot of sealing member 5 should be guaranteed Enough big, guarantee that the installation direction of pipe joint 3 is correct again, applicant is creatively found that, can use new location side Formula guarantees that pipe joint 3 installation direction is correct, guarantees that the sealing contact surface of sealing member 5 is sufficiently large simultaneously.

Thus, applicant creatively proposes, and directly the first end face 21 and the second end face 31 can be processed into plane Shape, say, that not locating and machining boss, positioning step etc. on the first end face 21 and the second end face 31, thus carry Highly dense sealing 5 be in sealing contact area, meanwhile, the installation direction in order to ensure pipe joint 3 is correct, can be by anti-rotation assembly It is designed to three groups and three groups of anti-rotation assembly spaced apart distributions in isosceles triangle in the circumference of draft tube 4, or, by anti-rotation Assembly is designed to four groups and four groups of anti-rotation assembly spaced apart distributions in isosceles trapezoid in the circumference of draft tube 4.

Thus, the anti-rotation assembly arranged owing to installing aforesaid way has installation directivity (such as triangle top towards can With instruction draft tube 4 the opening stretched in inner bag 1 towards), so, assembling time just can be according to being correctly oriented assembling Pipe joint 3, if the installation direction mistake of pipe joint 3 just cannot realize assembling, it is thereby advantageously ensured that draft tube 4 Installation direction is correct, it is ensured that the water outlet port of the draft tube 4 being used as water inlet pipe down, can be used as the draft tube 4 of outlet pipe Water inlet port can upward, so that it is guaranteed that through-flow effect.In addition, it is necessary to explanation, there is the anti-rotation installing directivity The arrangement of assembly is not limited to above-mentioned isosceles triangle, trapezoidal shape, can play other shapes of direction action also can, example As non-regular pentagon also may be used.

Below, referring briefly to Fig. 1-Fig. 4, the water tank of the water heater according to one specific embodiment of this utility model is briefly described 100。

Having gallbladder joint 2 on the sidewall of the water tank 100 of water heater, the side away from inner bag 1 of gallbladder joint 2 is provided with pipe joint 3, First end face 21 that one side end face is planar shaped of the adjacent tube joint 3 of gallbladder joint 2, the neighbouring gallbladder joint 2 of pipe joint 3 One side end face is the second end face 31 of planar shaped, and sealing member 5 is formed as sealing cast and being folded in the first end face 21 and second Between end face 31.

Be formed on first end face 21 three in isosceles triangle the spacing holes of distribution, each spacing hole is blind hole 22, and by The direction that first end face 21 is directed away from the second end face 31 is recessed, sealing member 5 is formed three and is distributed in isosceles triangle Spacing hole, each spacing hole is perforation 51, and runs through the wall thickness of sealing member 5, the second end face 31 be provided with three in The spacer pin 33 of isosceles triangle distribution, each spacer pin 33 all has the second end face 31 convex towards the direction of the first end face 21 Go out, three spacer pins 33 respectively correspondingly through after three perforation 51 with three blind hole 22 corresponding matching.Meanwhile, by spacing The connector 6 of locking nut structure is set on pipe joint 3, is tightened on gallbladder joint 2 with design torsion by the way of rotation On, thus ensure that sealing member 5, by good hold down, reaches good sealing effectiveness.

Wherein, the spacing hole on sealing member 5 preferably with spacer pin 33 interference fit, such that it is able to be effectively improved sealing effectiveness. In addition, it is necessary to explanation, spacing hole, the quantity of spacer pin 33, arrangement and shape all can be according to actual requirements Arrange, preferably to meet actual requirement.Preferably, the cross section of spacing hole is circular, thus convenient processing and assembling.

To sum up, according to the water tank 100 of the water heater of this utility model embodiment, by pipe joint 3 and the connection of gallbladder joint 2 Structure makes improvements, such that it is able on the premise of the installation direction guaranteeing draft tube 4 is correct, increase the sealing of sealing member 5 Contact area, is also effectively prevented from during assembling connecting piece 6 causing sealing member 5 to be distorted the problem of deformation, Jin Eryou simultaneously Improve to effect the preventing water leakage performance of the water tank 100 of water heater, improve the safety in utilization of the water tank 100 of water heater.

According to the water heater of this utility model embodiment, including the water tank 100 according to this utility model above-described embodiment, thus hot Water heater structure is simple, it is simple to processing, and effectively improves the leakage hidden trouble of inlet tube and outlet tube, improves the work of water heater Reliability and safety in utilization.

In addition, it is necessary to explanation, according to other of the water heater of this utility model embodiment constitute such as heater etc. and Operation is the most all known, is not detailed herein.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length Degree ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " perpendicular Directly ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or position relationship, be only for It is easy to describe this utility model and simplifying describe rather than instruction or the device of hint indication or element must have specifically Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or imply relatively important Property or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", " second " feature permissible Express or implicitly include one or more this feature.In description of the present utility model, " multiple " are meant that Two or more, unless otherwise expressly limited specifically.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", The term such as " fix " should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral； Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals or two elements Interaction relationship.For the ordinary skill in the art, can understand that above-mentioned term is at this as the case may be Concrete meaning in utility model.

In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first Feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, Or it is merely representative of fisrt feature level height higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than Second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " tool Body example " or the description of " some examples " etc. means to combine this embodiment or example describes specific features, structure, material Material or feature are contained at least one embodiment of the present utility model or example.In this manual, to above-mentioned term Schematic representation is necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or Person's feature can be to combine in one or more embodiments in office or example in an appropriate manner.Additionally, in the most conflicting feelings Under condition, those skilled in the art can be by the different embodiments described in this specification or example and different embodiment or show The feature of example is combined and combines.

Embodiment the most of the present utility model, it will be understood by those skilled in the art that: not These embodiments can be carried out multiple change in the case of departing from principle of the present utility model and objective, revise, replace and become Type, scope of the present utility model is limited by claim and equivalent thereof.

Claims (11)

1. the water tank of a water heater, it is characterised in that including:

Inner bag；

Gallbladder joint, described gallbladder joint is located on described inner bag；

Draft tube, one end of described draft tube extend in described inner bag after running through described gallbladder joint；

Pipe joint, described pipe joint is positioned at outside described inner bag and is connected with the other end of described draft tube；

Connector, described connector is located on described pipe joint and coordinates with described gallbladder joint and is connected；

Sealing member, described sealing member is set on described draft tube and between described gallbladder joint and described pipe joint；And

Anti-rotation assembly, described anti-rotation assembly is located on described gallbladder joint, described sealing member and described pipe joint, and is used for limiting Make described sealing member is relative with described gallbladder joint to be circumferentially rotated and the circumference relatively of described sealing member and described pipe joint turns Dynamic.

The water tank of water heater the most according to claim 1, it is characterised in that described anti-rotation assembly includes what grafting coordinated Spacer pin and spacing hole.

The water tank of water heater the most according to claim 2, it is characterised in that described pipe joint is provided with described spacer pin, It is formed with the described spacing hole of perforation shape on described sealing member, described gallbladder joint is formed the described spacing hole of blind hole shape.

The water tank of water heater the most according to claim 3, it is characterised in that the described spacing hole on described sealing member with Described spacer pin interference fit on described pipe joint.

The water tank of water heater the most according to claim 3, it is characterised in that described spacer pin is removable with described pipe joint It is connected with unloading or integral part.

The water tank of water heater the most according to claim 2, it is characterised in that described anti-rotation assembly is many groups and through-flow The circumferentially-spaced of pipe is opened.

The water tank of water heater the most according to claim 6, it is characterised in that described anti-rotation assembly is three groups and described The spaced apart distribution in isosceles triangle in the circumference of draft tube, or, described anti-rotation assembly is four groups and at described draft tube The spaced apart distribution in isosceles trapezoid on Zhou Xiang.

The water tank of water heater the most according to claim 1, it is characterised in that have the of planar shaped on described gallbladder joint End face, described pipe joint has the second end face of planar shaped, and described sealing member is folded in described first end face and described Between biend.

The water tank of water heater the most according to claim 1, it is characterised in that described gallbladder joint and the material of described inner bag Identical and be weldingly connected.

The water tank of water heater the most according to claim 1, it is characterised in that described connector is set in described pipe and connects Coordinate on head and with described gallbladder joint screw thread.

11. 1 kinds of water heaters, it is characterised in that include the water tank according to the water heater according to any one of claim 1-10.