CN206695397U

CN206695397U - Drain assembly and electric heater

Info

Publication number: CN206695397U
Application number: CN201720469600.1U
Authority: CN
Inventors: 马继卿; 唐晓峨; 陈阳坚
Original assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2017-12-01
Anticipated expiration: 2027-04-28

Abstract

The utility model discloses a kind of drain assembly and electric heater, wherein, the drain assembly includes：Adapter, there is water inlet end and water side；And drainpipe, the internal face connection of one end and adapter, the other end is stretched out from the water inlet end of adapter, and the internal face of the outside wall surface of drainpipe and adapter is arranged at intervals；The water inlet end of adapter is used to be sheathed with the outside of the outlet pipe of inner container of electric water heater and is spirally connected with outlet pipe, and drainpipe is extended in inner container of electric water heater through outlet pipe.The advantages of being spirally connected with convenient dismounting, the dismounting of the outlet pipe of drain assembly and inner bag is so facilitated, when needing to clear up the incrustation scale in inner bag, first drain assembly is disassembled, the incrustation scale being cleaned in inner bag is under the impact of water after the outlet pipe discharge of inner bag, drain assembly is screw-coupled to the outlet pipe of inner bag again, consequently facilitating in inner bag incrustation scale cleaning.

Description

Drain assembly and electric heater

Technical field

Electric heater technical field is the utility model is related to, more particularly to a kind of drain assembly and electric heater.

Background technology

Electric heater mainly includes：The parts such as inner bag, heater, control device, water inlet pipe, drainpipe, magnesium rod；Its In, water inlet pipe and drainpipe are fixedly connected with inner bag, i.e., when water inlet pipe and drainpipe assemble with inner bag respectively, water inlet pipe with The water inlet grafting of inner bag and be connected, the discharge outlet of drainpipe and inner bag interference fit is fixed, namely in dismounting water inlet pipe During with drainpipe, water inlet pipe and drainpipe can be damaged and can not be continuing with, and so allow for the water inlet pipe of electric heater Inconvenience is dismantled with drainpipe.

However, electric heater uses for a long time, the internal face of its inner bag can adhere to incrustation scale, due to the water inlet pipe of electric heater Inconvenience is dismantled with drainpipe, so resulting in incrustation scale in the inner bag of electric heater is inconvenient to discharge, and then to the row of electric heater Dirt brings inconvenience.

Utility model content

Main purpose of the present utility model is to propose a kind of drain assembly, it is intended to facilitates the blowdown of electric heater.

To achieve the above object, the utility model proposes drain assembly, for electric heater, it includes：

Adapter, there is water inlet end and water side；And

Drainpipe, one end are connected with the internal face of the adapter, and the other end stretches out from the water inlet end of the adapter, and The outside wall surface of the drainpipe and the internal face of the adapter are arranged at intervals；

The water inlet end of the adapter be used to be sheathed with the outside of the outlet pipe of the inner container of electric water heater and with the water outlet Pipe is spirally connected, and the drainpipe is extended in the inner container of electric water heater through the outlet pipe.

Preferably, the water inlet end of the adapter is provided with inner cone pipe screw thread, and the inner cone pipe screw thread is used for and the water outlet Outer taper pipe thread on pipe is spirally connected, to cause the adapter and the outlet pipe to be spirally connected fixation.

Preferably, the water inlet end internal face of the adapter is arranged with detent, the detent be used for it is described Positioning boss in outlet pipe outside wall surface coordinates.

Preferably, the internal face of the adapter is convexly equipped with circumferential along the annular muscle stretched along it；One end of the drainpipe It is inserted in the annular muscle, to be connected with the annular muscle.

Preferably, the annular muscle offers multiple along its circumferentially distributed breach.

Preferably, the internal perisporium of the annular muscle is provided with internal thread；The periphery wall of the drainpipe is correspondingly arranged on outer Screw thread, the drainpipe are threadedly coupled with the annular muscle.

Preferably, the drain assembly also includes a sealing gasket, and the sealing gasket is arranged at the annular muscle described in The surface of water inlet end port, the sealing gasket are used for when water inlet end and the outlet pipe of the adapter are spirally connected, and described The end part seal of the outlet pipe of inner container of electric water heater abuts.

Preferably, end of the drainpipe away from the adapter is in grid-like setting.

Preferably, the water side of the adapter is provided with the internal thread or external screw thread being spirally connected with exterior line.

The utility model also proposes a kind of electric heater, and it includes inner bag, heater, magnesium rod and drain assembly；Institute Stating drain assembly includes：

Adapter, there is water inlet end and water side；And

Drainpipe, it is connected with the internal face of the adapter and is stretched out from the water inlet end of the adapter；

The water inlet end of the adapter be sheathed with the outside of the outlet pipe of the inner container of electric water heater and with the outlet pipe spiral shell Connect, the drainpipe is extended in the inner container of electric water heater through the outlet pipe.

For the utility model by setting a drain assembly, the adapter of the drain assembly is sheathed with the inner bag of electric heater Simultaneously it is spirally connected with outlet pipe on the outside of outlet pipe, drainpipe is fixed on inner bag, the advantages of being spirally connected with convenient dismounting, this is also It has been easy to the dismounting of the outlet pipe of drain assembly and inner bag.When needing to clear up the incrustation scale in inner bag, first drain assembly is dismantled Get off, the incrustation scale being cleaned in inner bag under the impact of water after the discharge of the outlet pipe of inner bag, then in drain assembly is screw-coupled to The outlet pipe of courage, so facilitate the cleaning of incrustation scale in inner bag.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to the structure shown in these accompanying drawings.

Fig. 1 is the sectional view of the embodiment of the utility model drain assembly one；

Fig. 2 is the sectional view of adapter in Fig. 1；

Fig. 3 is the structural representation of the embodiment of the utility model electric heater one；

Fig. 4 is the enlarged diagram of local A in Fig. 3.

Drawing reference numeral explanation：

Label	Title	Label	Title
				10	Drain assembly	211	Positioning boss
100	Electric heater	114	Annular muscle
				11	Adapter	1141	Breach
111	Water inlet end	13	Sealing gasket
				112	Water side	14	Screen pack
12	Drainpipe	141	Installation portion
				20	Inner bag	142	Filter house
21	Outlet pipe	30	Magnesium rod
				113	Detent	40	Heater

Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only part of the embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belong to the scope of the utility model protection.

If it is to be appreciated that related in the utility model embodiment directionality instruction (such as upper and lower, left and right, it is preceding, Afterwards ...), then directionality instruction be only used for explain it is relative between each part under a certain particular pose (as shown in drawings) Position relationship, motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes therewith.

If, should " first ", " the in addition, relate to the description of " first ", " second " etc. in the utility model embodiment Two " etc. description is only used for describing purpose, and it is not intended that instruction or implying its relative importance or implicit indicating meaning The quantity of the technical characteristic shown.Thus, " first " is defined, the feature of " second " can express or implicitly include at least one Individual this feature.In addition, the technical scheme between each embodiment can be combined with each other, but must be with ordinary skill Personnel can be implemented as basis, and this technical side is will be understood that when the combination appearance of technical scheme is conflicting or can not realize The combination of case is not present, also not within the protection domain of the requires of the utility model.

In order to facilitate the dismounting of the drainpipe of electric heater, and then facilitate electric heater blowdown, the utility model proposes one The new drain assembly of kind, refer to Fig. 1, Fig. 1 shows the structural representation of drain assembly of the present utility model.

Please with reference to Fig. 3, the drain assembly 10 is applied to electric heater 100, and it includes adapter 11 and drainpipe 12.

Above-mentioned adapter 11 has water inlet end 111 and water side 112, and its water inlet end 111 is used for the outlet pipe with inner bag 20 21 are spirally connected, and the outlet pipe 21 of whole drain assembly 10 and inner bag 20 is connected, and its water side 112 is used for and exterior line Connection.

It should be noted that the adapter 11 can be linear pattern pipe or shaped form pipe, as long as ensureing the adapter 11 Water inlet end 111 be it is linearly set, be so advantageous to being spirally connected for adapter 11 and outlet pipe 21.

One end of above-mentioned drainpipe 12 is fixedly connected with the internal face of adapter 11, the other end self-rotation connector of drainpipe 12 11 water inlet end 111 is stretched out, and the drainpipe 12 is arranged at intervals with adapter 11.It should be noted that the drainpipe 12 with Adapter 11 can be integrally formed or split settings, not do specific restriction herein.

The drainpipe 12 can be with its foolproof function, i.e. drain assembly 10 and inner bag when drain assembly 10 and inner bag 20 assemble When 20 outlet pipe 21 is connected, the one end of drainpipe 12 away from adapter 11 initially passes through inner bag 20 and extended in inner bag 20, this Sample avoids that drain assembly 10 is counter to be filled on inner bag 20.

Fig. 3 is refer to, when the inner bag 20 of above-mentioned drain assembly 10 and electric heater 100 assembles, the row of drain assembly 10 The outlet pipe 21 that the one end of water pipe 12 away from adapter 11 initially passes through inner bag 20 is extended in inner bag 20, at the same time, drain assembly 10 adapter 11 and the outlet pipe 21 of inner bag 20 are spirally connected fixation, and whole drain assembly 10 is in adapter 11 and the spiral shell of outlet pipe 21 Connect lower fixation.Due to the characteristics of being spirally connected with convenient disassembly, the inner bag 20 of drain assembly 10 and electric heater 100 is so facilitated Dismounting, when needing to clear up the incrustation scale in inner bag 20, first drain assembly 10 is disassembled, the incrustation scale being cleaned in inner bag 20 exists Discharged under the impact of water from the outlet pipe 21 of inner bag 20, after the incrustation scale in inner bag 20 cleans out, then by the spiral shell of drain assembly 10 The outlet pipe 21 of inner bag 20 is connected to, so facilitates the discharge of incrustation scale in inner bag 20.

For the utility model by setting a drain assembly 10, the adapter 11 of the drain assembly 10 is sheathed with electric heater The outside of outlet pipe 21 of 100 inner bag 20 is simultaneously spirally connected with outlet pipe 21, drainpipe 12 is fixed on inner bag 20, being spirally connected has The advantages of convenient dismounting, this has also facilitated the dismounting of drain assembly 10 and the outlet pipe 21 of inner bag 20.When need clear up inner bag During incrustation scale in 20, first drain assembly 10 is disassembled, the incrustation scale being cleaned in inner bag 20 is under the impact of water from inner bag 20 Outlet pipe 21 discharge after, then drain assembly 10 is screw-coupled to the outlet pipe 21 of inner bag 20, so facilitated in inner bag 20 The cleaning of incrustation scale.

In an embodiment of the present utility model, the water inlet end 111 of the adapter 11 is provided with inner cone pipe screw thread, accordingly , outer taper pipe thread is provided with the outlet pipe 21 of inner bag 20, adapter 11 passes through the inner cone pipe screw thread of water inlet end 111 and water outlet Outer taper pipe thread on pipe 21 is spirally connected fixation.Taper pipe thread itself has good sealing, in the case of without using filler The sealing that ridge deformation ensures that connection is only relied on, is so advantageous to improve the adapter 11 and inner bag 20 of adaptor Outlet pipe 21 between sealing.Also, adapter 11 is sheathed on outside outlet pipe 21, into drain assembly 10 water to Revealed from the junction of drain assembly 10 and outlet pipe 21, then need reversely to flow through the inner cone pipe screw thread of adapter 11 and outlet pipe 21 outer taper pipe thread, and good airproof performance between the inner cone pipe screw thread of adapter 11 and the outer taper pipe thread of outlet pipe 21, so The problem of junction for ensuring that adapter 11 and outlet pipe 21 is not in leak.

Further, waterproof glue can also be coated with the junction of adapter 11 and outlet pipe 21 to be sealed, so It just can further improve adapter 11 and the sealing of the junction of outlet pipe 21.

In another embodiment of the present utility model, can also adapter 11 outside wall surface it is recessed along its circumferentially extending Annular mounting groove (not shown), the annular mounting groove is used to be fixedly mounted for sealing ring is (not shown), when sealing ring is fixedly mounted During into annular mounting groove, the sealing ring is that the outside wall surface for protruding adapter 11 is set, this assures adapter 11 and After outlet pipe 21 is spirally connected, sealed against on the inside of the sealing ring with outlet pipe 21, be on the outside of sealing ring and adapter 11 Internal face seal against, so equally ensure that the sealing between adapter 11 and outlet pipe 21.

It should be noted that above-mentioned adapter 11 can be sealed with outlet pipe 21 with other modes, just differ herein One lists.

In an embodiment of the present utility model, Fig. 1 or Fig. 2 is refer to, the internal face of water inlet end 111 of the adapter 11 is recessed Provided with detent 113, and the detent 113 is located at one of inner cone pipe screw thread away from the water side 112 for going out adapter 11 Side；Fig. 4 is refer to, the outside wall surface of the outlet pipe 21 is convexly equipped with positioning boss 211, and the positioning boss 211 is located at outlet pipe 21 outer taper pipe thread is close to the side of inner bag 20.When drain assembly 10 and inner bag 20 assemble, the switching of the drain assembly 10 First 11 are spirally connected fixation with the outlet pipe 21 of inner bag 20, and when the outlet pipe 21 of the adapter 11 and inner bag 20 of drain assembly 10 fills With in place when, the positioning that the positioning boss 211 in the outside wall surface of outlet pipe 21 is buckled on the internal face of water inlet end 111 of adapter 11 is recessed In groove 113.The positioning boss 211 and detent 113 cooperate, and on the one hand can avoid outlet pipe 21 and the phase of adapter 11 Mutually separation, that is, the water outlet hydraulic pressure for avoiding inner bag 20 is excessive and the problem of cause adapter 11 to be come off from outlet pipe 21； On the other hand, additionally it is possible to ensure that adapter 11 assembles in place with outlet pipe 21, i.e., when adapter 11 and outlet pipe 21 are spirally connected, when Hear " " a sound when, that is, the positioning boss 211 represented in the outside wall surface of outlet pipe 21 is buckled into the water inlet end 111 of adapter 11 In the detent 113 of wall, so avoid adapter 11 and install not in place and cause drain assembly 10 with outlet pipe 21 The problem of being come off from outlet pipe 21.

In order to more intuitively check whether adapter 11 and outlet pipe 21 assemble in place, the detent of the adapter 11 113 outside wall surfaces for running through adapter 11 are set, and whether the positioning boss 211 that thus can intuitively check on outlet pipe 21 buckles into Into the detent 113 of adapter 11, and then it is easy to the assembling of adapter 11 and outlet pipe 21.

Further, the notch of above-mentioned detent 113 is provided with chamfering or increases notch of detent 113 etc. Deng, be arranged such, the positioning boss 211 being easy on outlet pipe 21 is buckled into detent 113, so be easy to adapter 11 with The assembling of outlet pipe 21.

Obviously, buckle into detent 113, above-mentioned positioning boss 211 can also be located in order to facilitate positioning boss 211 The circumferential surface of outlet pipe 21 is arranged to inclined-plane, when adapter 11 and outlet pipe 21 are spirally connected fixed, the positioning boss 211 it is oblique Guiding is played in face, in order to which positioning boss 211 is buckled into detent 113；Meanwhile the inclined-plane of the positioning boss 211 is also Positioning boss 211 can be guided to be separated from each other with detent 113.

Set it should be noted that above-mentioned positioning boss 211 can also be in spherical or taper, i.e. the positioning boss 211 Outer surface is sphere or the conical surface, is arranged such, is equally easy to positioning boss 211 to buckle into detent 113.

Further, the quantity of above-mentioned detent 113 is multiple, and multiple detents 113 are along adapter 11 Circumferentially it is uniformly distributed；The quantity of above-mentioned positioning boss 211 is also to be multiple, and multiple positioning boss 211 are along outlet pipe 21 Circumferentially it is uniformly distributed.When adapter 11 and outlet pipe 21 connect, each detent 113 on adapter 11 is corresponding and certain The position snapping of boss 211；I.e. when adapter 11 and outlet pipe 21 assemble in place, each positioning boss 211 is corresponding to be buckled into certain In the groove 113 of position.It is arranged such so that what is connected between adapter 11 and outlet pipe 21 is more firm.

In addition, above-mentioned detent 113 can also be arranged on outlet pipe 21, positioning boss 211 is correspondingly arranged at switching On first 11.Specifically, the positioning boss 211 is arranged at inner cone pipe screw thread close to the side of water side 112, the detent 113 Side of the outer taper pipe thread away from inner bag 20 is correspondingly arranged in, for setting the effect of positioning boss 211 and detent 113 can With reference to above-mentioned implementation, just repeat no more herein.

In an embodiment of the present utility model, Fig. 2 is refer to, the internal face of the adapter 11, which is convexly equipped with along its circumference, to be prolonged The annular muscle 114 to be formed is stretched, the annular muscle 114 is used for one end grafting with drainpipe 12.Grafting, which has, dismounts the advantages of quick, So facilitate the assembling of drain assembly 10.In existing electric heater 100, its outlet pipe 21 of the inner bag 20 of different model Size is typically identical, and the inner bag 20 of different model its volume is different, namely its is straight for the inner bag 20 of different model Footpath is differed, and drainpipe 12 and adapter 11 are arranged into grafting, are thus conveniently replaceable drainpipe 12, and then improve this The scope of application of drain assembly 10.

It is preferred that above-mentioned annular muscle 114 offers multiple along its circumferentially distributed breach 1141, adjacent two are so allowed for Annular muscle 114 between breach 1141 forms elastic arm.When drainpipe 12 and adapter 11 assemble, annular muscle 114 is by draining Slight deformation can occur for the extruding of pipe 12, so facilitate the assembling of drainpipe 12 and adapter 11.

It is preferred that the internal perisporium of above-mentioned annular muscle 114 is provided with internal thread segment, the periphery wall of the one end of drainpipe 12 is correspondingly set External thread section is equipped with, drainpipe 12 is connected through a screw thread fixation with annular muscle 114, and the stability being threadedly coupled than grafting is wanted Height, so allow for that drainpipe 12 is connected with adapter 11 more firmly, avoid what drainpipe 12 came off from adapter 11 Problem occurs.

It is preferred that refer to Fig. 1 and Fig. 4, the annular muscle 114 is provided with sealing gasket towards the surface of the port of water inlet end 111 13.When adapter 11 and outlet pipe 21 are spirally connected fixed, the sealing gasket 13 supports with end part seal of the outlet pipe 21 away from inner bag 20 Connect, that is to say, that between adapter 11 and outlet pipe 21 in addition to being connected by thread seal, the outlet pipe 21 is away from inner bag Also it is tightly connected between 20 end and adapter 11 by sealing gasket 13, it is further to improve result in formation of two seals There is the wind of leak in sealing between adapter 11 and outlet pipe 21, the junction for reducing adapter 11 and outlet pipe 21 Danger.

In an embodiment of the present utility model, Fig. 1 is refer to, the end of the drainpipe 12 away from adapter 11 is in grid Shape is set.Specifically, end set screen pack 14 of the drainpipe 12 away from adapter 11, the screen pack 14 being capable of effective ground resistances The incrustation scale blocked in inner bag 20 is discharged by drainpipe 12, is mixed in so avoiding incrustation scale in water and is influenceed the body of user Test, at the same also avoid incrustation scale into outer water tube and cause outer water tube be blocked the problem of occur.

It is understood that the end of the drainpipe 12 away from adapter 11 can also set a cover plate, and the cover plate It is upper that multiple through holes are set in grid-like, it is arranged such, can equally stops that the incrustation scale in inner bag 20 is discharged by drainpipe 12. It is, of course, also possible in end set other structures part of the drainpipe 12 away from adapter 11, to cause drainpipe 12 away from switching First 11 end is in grid-like, is not just enumerated herein.

It is preferred that the tight fit of outlet pipe 21 of above-mentioned drainpipe 12 and inner bag 20, that is to say, that the water in inner bag 20 can only Discharged by drainpipe 12, this makes it possible to the incrustation scale for the internal face for avoiding being attached to inner bag 20 from drainpipe 12 and outlet pipe 21 Between gap discharge, avoid incrustation scale and be mixed in water and influence the experience of user, at the same also avoid incrustation scale enter it is outside Water pipe and cause outer water tube be blocked the problem of occur.

In addition, the end of the drainpipe 12 away from adapter 11 extends to the axial location of inner bag 20, due to electric heater 100 heater 40 is normally located at the axial location of inner bag 20, can be first by adjacent to it when the heater 40 works Water is heated, and drainpipe 12 is extended close to the position of the axis of inner bag 20, so allows for what is be first heated in inner bag 20 Water can be discharged quickly from drainpipe 12, thus shorten the time that user waits hot water, be advantageous to improve the experience of user.

It is preferred that the water side 112 of the adapter 11 is also in grid-like setting, it is to be understood that the drainpipe 12 is remote End from adapter 11 can be in grid-like setting because being provided with screen pack 14, or the drainpipe 12 is away from switching First 11 end is provided with, in grid-like cover plate and in grid-like setting etc., just not enumerating herein.By adapter 11 Water side 112 set in grid-like, the incrustation scale that so can effectively stop in inner bag 20 is discharged by drain assembly 10, this Sample not only avoid incrustation scale and be mixed in water and influence the experience of user, while also avoid incrustation scale and caused into outer water tube The problem of outer water tube is blocked occurs.

In an embodiment of the present utility model, the water side 112 of the adapter 11 is provided with female end or external screw thread End.Preferably, the water side 112 of the adapter 11 is provided with male end, and the water side 112 of adapter 11 can pass through screw thread Connection is connected with outer water tube, so facilitates adapter 11 to be connected with outer water tube.

The utility model also proposes a kind of electric heater 100, and the electric heater 100 includes inner bag 20, magnesium rod 30, heating dress 40 and drain assembly 10 are put, the concrete structure of the drain assembly 10 is with reference to above-described embodiment, because this electric heater 100 employs Whole technical schemes of above-mentioned all embodiments, thus it is at least all beneficial caused by the technical scheme with above-described embodiment Effect, this is no longer going to repeat them.

It is preferred that above-mentioned heater 40 is extended along the axis of inner bag 20, above-mentioned magnesium rod 30 is integrated to heating On device 40, and it is extended, is arranged such along the axis of inner bag 20, reduces the number of openings of inner bag 20, it is so favourable In improving the overall sealing of inner bag 20, the leak risk of electric heater 100 is reduced.

Preferred embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, Every equivalent structure change under inventive concept of the present utility model, made using the utility model specification and accompanying drawing content Change, or directly/be used in other related technical areas indirectly and be included in scope of patent protection of the present utility model.

Claims

A kind of 1. drain assembly, for electric heater, it is characterised in that including：

Adapter, there is water inlet end and water side；And

Drainpipe, one end are connected with the internal face of the adapter, and the other end stretches out from the water inlet end of the adapter, and described The outside wall surface of drainpipe and the internal face of the adapter are arranged at intervals；

The water inlet end of the adapter be used to be sheathed with the outside of the outlet pipe of the inner container of electric water heater and with the outlet pipe spiral shell Connect, the drainpipe is extended in the inner container of electric water heater through the outlet pipe.
2. drain assembly as claimed in claim 1, it is characterised in that the water inlet end of the adapter is provided with inner cone pipe screw thread, The inner cone pipe screw thread is used to be spirally connected with the outer taper pipe thread on the outlet pipe, to cause the adapter and the outlet pipe Be spirally connected fixation.
3. drain assembly as claimed in claim 1, it is characterised in that the water inlet end internal face of the adapter is arranged with positioning Groove, the detent are used to coordinate with the positioning boss in the outlet pipe outside wall surface.
4. drain assembly as claimed in claim 1, it is characterised in that the internal face of the adapter is convexly equipped with along its circumferential edge The annular muscle stretched；

One end of the drainpipe is inserted in the annular muscle, to be connected with the annular muscle.
5. drain assembly as claimed in claim 4, it is characterised in that the annular muscle offers multiple circumferentially distributed along its Breach.
6. the drain assembly as described in claim 4 or 5, it is characterised in that the internal perisporium of the annular muscle is provided with internal thread；

The periphery wall of the drainpipe is correspondingly arranged on external screw thread, and the drainpipe is threadedly coupled with the annular muscle.
7. drain assembly as claimed in claim 4, it is characterised in that the drain assembly also includes a sealing gasket, described close Packing is arranged at the annular muscle towards the surface of the water inlet end port,

The sealing gasket is used for when the water inlet end of the adapter is spirally connected with the outlet pipe, with the inner container of electric water heater The end part seal of outlet pipe abuts.
8. drain assembly as claimed in claim 1, it is characterised in that end of the drainpipe away from the adapter is in lattice Palisade is set.
9. drain assembly as claimed in claim 1, it is characterised in that the water side of the adapter is provided with and exterior line spiral shell The internal thread or external screw thread connect.
10. a kind of electric heater, it is characterised in that any one including inner bag, heater, magnesium rod and such as claim 1-9 Drain assembly described in, the outlet pipe of the adapter of the drain assembly and the inner bag are spirally connected, and the drainpipe passes through institute The outlet pipe for stating inner container of electric water heater is extended in the inner container of electric water heater.