CN203785270U - Electric water heater - Google Patents

Electric water heater Download PDF

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Publication number
CN203785270U
CN203785270U CN201420108138.9U CN201420108138U CN203785270U CN 203785270 U CN203785270 U CN 203785270U CN 201420108138 U CN201420108138 U CN 201420108138U CN 203785270 U CN203785270 U CN 203785270U
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CN
China
Prior art keywords
water
water pipe
pipe head
electric heater
bag
Prior art date
Application number
CN201420108138.9U
Other languages
Chinese (zh)
Inventor
叶远璋
梁天生
陈派树
赵猛
Original Assignee
广东万和电气有限公司
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Publication date
Application filed by 广东万和电气有限公司 filed Critical 广东万和电气有限公司
Priority to CN201420108138.9U priority Critical patent/CN203785270U/en
Application granted granted Critical
Publication of CN203785270U publication Critical patent/CN203785270U/en

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Abstract

An electric water heater comprises a casing, a liner, a water outlet pipe, a water outlet insulation pipe and a water pipe joint. The electric water heater is mainly technically characterized in that one end of the water pipe joint extends into the liner; the water outlet pipe penetrates through the water pipe joint and extends into the liner; the water outlet insulation pipe and the water pipe joint are in sealing connection; and the water outlet insulation pipe is communicated with the water outlet pipe. According to the electric water heater, not only can the weld strength between the water pipe joint and the liner be effectively increased, but also the welding technology is facilitated, the sealing effect of the water pipe joint, the water outlet pipe and the water outlet insulation pipe can be further guaranteed, the occupied space of the water pipe joint outside the liner can be saved, and the product cost is reduced.

Description

Electric heater

Technical field

The utility model belongs to electric heater field, refers more particularly to a kind of electric heater.

Background technology

Existing electric heater is for to be fixed on outlet pipe in inner bag, and wall welds a water pipe head outside the tank conventionally, and outlet pipe stretches in inner bag through water pipe head.Outlet pipe is located by water pipe head like this, is communicated with the water outlet insulation tube of inner bag outside simultaneously, with to user's hot-water supply.And this connected mode that water pipe head is welded on to inner bladder outer wall possesses following defect:

First, its weld strength is inadequate, and welding procedure is difficult to realize the axis of pitch of horizontal inner bag and the orthogonality relation of water pipe head center line (for vertical electric heater, be difficult to realize the vertical axis of vertical inner bag and the parallel relation of water pipe head center line), and then be unfavorable for being tightly connected of water pipe head and outlet pipe and water outlet insulation tube; Again, for making the stable connection between water pipe head and outlet pipe or water outlet insulation tube, need fully to guarantee the contact area between water pipe head and outlet pipe or water outlet insulation tube, this has directly increased the volume of water pipe head, make water pipe head take larger space, so have to, use the shell of larger volume, directly increased product cost.For overcoming these defects, spy develops electric heater.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of electric heater will be provided, it can not only effectively increase the weld strength between water pipe head and inner bag, and be beneficial to welding procedure, can guarantee the sealing effectiveness of water pipe head and outlet pipe and water outlet insulation tube, can also save taking up room of water pipe head, reduce product cost.

The technical scheme that the utility model solves its technical problem employing is: a kind of electric heater, comprise shell, inner bag, outlet pipe, water outlet insulation tube and water pipe head, one end of described water pipe head is stretched in inner bag and is arranged, outlet pipe stretches into inner bag setting through water pipe head, water outlet insulation tube and water pipe head are tightly connected, and water outlet insulation tube is communicated with outlet pipe.

An embodiment who provides according to the utility model, described inner bag is enamel inner container, the end that inner bag one end is stretched in water pipe head arranges arc-shaped transitional surface, can prevent burst porcelain phenomenon.

An embodiment who provides according to the utility model, described water pipe head is provided with the cavity volume with the first positioning table, described water outlet insulation tube upstream extremity is provided with convex shoulder, convex shoulder stretches into cavity volume and a sealing ring is pressed in the first positioning table, convex shoulder below forms a neck, positioning piece is arranged in described neck, and described keeper is fixedly connected with water pipe head simultaneously.The syndeton of a kind of water pipe head and water outlet insulation tube is provided thus, and this syndeton technique is simple, cost is low, and reliability is high.

An embodiment who provides according to the utility model, described sealing ring is the setting of falling peviform, and sealing ring has taper wall body, and convex shoulder stretches into sealing ring and struts the outer peripheral face of taper wall body.So can improve sealing effectiveness, avoid water pipe head inwall to contact with the direct extruding of water outlet insulation tube simultaneously, protection water outlet insulation tube.

An embodiment who provides according to the utility model, the cavity volume inwall of described water pipe head is provided with oblique inwall, tiltedly inwall coordinates with the outer peripheral face of sealing ring taper wall body, and the tilt angle alpha of outer peripheral face is less by 1 ~ 5 than the inclination angle beta of the oblique inwall of cavity volume, i.e. 1 °≤β-α≤5 °; Further to improve the sealing property of the conical surface.

An embodiment who provides according to the utility model, arranges sealing gasket between the convex shoulder of described water outlet insulation tube and keeper, further improves sealing effectiveness, can avoid water outlet insulation tube to contact with the rigidity between keeper simultaneously.

An embodiment who provides according to the utility model, described keeper is an open type nut, the cavity volume inwall of water pipe head arranges internal thread, on open type nut, have the external screw thread being connected with this internal thread, open type nut is threaded connection water outlet insulation tube is pressed in the cavity volume of water pipe head.So can facilitate the dismounting process of each parts.

An embodiment who provides according to the utility model, the bottom of described open type nut is provided with hole, for the dismantling device of parts provides fulcrum.

An embodiment who provides according to the utility model, in described cavity volume, be also provided with the second positioning table, the second positioning table is linked with positioning sleeve, described positioning sleeve comprises body and hanging platform, hanging platform end arranges depressed part, and hanging platform is fastened between the second positioning table and sealing ring, and described outlet pipe is provided with flange, outlet pipe is through body, and the flange of outlet pipe is fastened between depressed part and sealing ring.For outlet pipe and being connected of water pipe head provide, a kind of technique is simple, cost is low thus, and the high structure of reliability.

An embodiment who provides according to the utility model, described electric heater is Horizontal electric water heater, the center line quadrature of the axis of pitch of its inner bag and water pipe head, and then guarantee the sealing effectiveness of water pipe head and outlet pipe and water outlet insulation tube.Correspondingly, when electric heater is vertical electric heater, the vertical axis of its inner bag is parallel with the center line of water pipe head or overlap, and can guarantee the sealing effectiveness of water pipe head and outlet pipe and water outlet insulation tube.

The utility model is compared produced beneficial effect with background technology: because the utility model stretches into one end of water pipe head in inner bag and arranges, outlet pipe stretches into inner bag setting through water pipe head, water outlet insulation tube and water pipe head are tightly connected, and water outlet insulation tube is communicated with outlet pipe.Therefore the utility model can not only effectively increase the weld strength between water pipe head and inner bag, and is beneficial to welding procedure, can guarantee the sealing effectiveness of water pipe head and outlet pipe and water outlet insulation tube, can also save taking up room of water pipe head, reduce product cost.

Accompanying drawing explanation: Fig. 1 is partial structurtes schematic diagram of the present utility model;

Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1;

Fig. 3 is the blast perspective view of outlet pipe 03 in Fig. 2, water outlet insulation tube 04, water pipe head 05, sealing ring 06, open type nut 07, positioning sleeve 08;

Fig. 4 is the perspective view of water pipe head 05;

Fig. 5 is the cross-sectional view of water pipe head 05;

Fig. 6 is the perspective view of water outlet insulation tube 04;

Fig. 7 is the cross-sectional view of sealing ring 06.

The specific embodiment: describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, wherein in each figure, identical label represents identical part.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and be not understood to restriction of the present utility model.

As shown in Figure 1 and Figure 2, the electric heater in the present embodiment is horizontal electric heater, comprises shell 01, inner bag 02, outlet pipe 03, water outlet insulation tube 04, water pipe head 05.Inner bag 02 is enamel inner container.

One end of water pipe head 05 is stretched in inner bag 02 through wall of inner container, and water pipe head 05 is sealedly and fixedly connected by welding procedure and inner bag 02.Preferably, the end that inner bag 02 one end is stretched in water pipe head 05 arranges arc-shaped transitional surface 51, to prevent burst porcelain phenomenon.Outlet pipe 03 stretches into inner bag 02 through water pipe head 05 and arranges, and outlet pipe 03 is fixed in water pipe head 05, and water outlet insulation tube 04 is tightly connected with water pipe head 05, and water outlet insulation tube 04 is communicated with outlet pipe 03.Shell 01 holds described inner bag 02, outlet pipe 03, water outlet insulation tube 04 and water pipe head 05, and wherein water outlet insulation tube 04 is communicated with external heat water supply through shell 01.

Just because one end of water pipe head 05 is stretched in inner bag 02, the other end is positioned at inner bag 02 outer wall setting, be beneficial to welding procedure, make to weld the axis of pitch of rear inner bag 02 and the center line of water pipe head 05 relation that is orthogonal, with guarantee the center line of outlet pipe 03 and water outlet insulation tube 04 longitudinally tube hub line coincide, thereby fully guarantee being tightly connected between water pipe head 05 and outlet pipe 03 or water outlet insulation tube 04; Meanwhile, this structure can be saved water pipe head and be taken the space between shell and inner bag, to use adaptively the shell of small volume, saves cost; Can also effectively increase the weld strength between water pipe head 05 and inner bag 02.

In the present embodiment, further in order to provide between inner bag 02, outlet pipe 03, water outlet insulation tube 04, water pipe head 05 in above-mentioned electric heater, a kind of technique is simple, cost is low, and the high syndeton of reliability.

Described water pipe head 05 is provided with a cavity volume 52, and referring to Fig. 4, Fig. 5, the inwall of cavity volume 52 has the first positioning table 521, oblique inwall 522, establishes female inwall 523 and the second positioning table 524.

Water outlet insulation tube 04 shown in Figure 6, its upstream extremity is provided with a convex shoulder 41, and described convex shoulder 41 belows form a neck 42.

Shown in Fig. 3, Fig. 7, described sealing ring 06 is down peviform, and sealing ring 06 has taper wall body 61, and described taper wall body 61 has the outer peripheral face 611 of inclination.

Referring to the keeper in Fig. 3, be provided with the open type nut 07 in external screw thread 071 and hole 072.Referring to the outlet pipe 03 in Fig. 3 and positioning sleeve 08, described outlet pipe 03 has flange 31, and positioning sleeve 08 comprises body 81 and hanging platform 82, and hanging platform 82 ends arrange depressed part 822.

Referring to Fig. 2, Fig. 3, water pipe head 05 is welded on inner bag 02, the convex shoulder 41 of water outlet insulation tube 04 stretches into the cavity volume 52 of water pipe head 05, and sealing ring 06 is pressed in the first positioning table 521, convex shoulder 41 stretches into sealing ring 06 and struts the outer peripheral face 611 of taper wall body 061, the oblique inwall 522 of cavity volume 52 coordinates with the outer peripheral face 611 of sealing ring taper wall body 061, and the inclination angle beta of the oblique inwall 522 of cavity volume is greater than the tilt angle alpha of outer peripheral face 611, particularly, α is the arbitrary angle of inclination between 50 ~ 75, β is the arbitrary angle of inclination between 51 ~ 80, inclination angle beta is greater than tilt angle alpha 1 ~ 5 simultaneously, i.e. 1 °≤β-α≤5 °.So the sealing ring of falling peviform 06 both can guarantee sealing effectiveness, and can protect convex shoulder 41.

Neck 42 cards of convex shoulder 41 belows are established an open type nut 07, cavity volume 52 inwalls 523 of water pipe head 05 arrange internal thread, on open type nut 07, there is the external screw thread 071 being connected with this internal thread, open type nut 07 is threaded connection water outlet insulation tube 04 is pressed in the cavity volume 52 of water pipe head 05, and the bottom of open type nut 07 is provided with hole 72, for the dismounting of open type nut 07 facilitates.Thereby realize being tightly connected of water pipe head 05 and water outlet insulation tube 04.Just due to open type nut 07, be arranged on neck 42 places of convex shoulder 41 belows, when turning open type nut 07 and upwards press water outlet insulation tube 04, avoided open type nut 07 to contact and extruding with the direct of sealing ring 06, thereby can guarantee that sealing ring 06 and the convex shoulder 41 of water outlet insulation tube 04 are, the static matching relationship of the first positioning table 521 of water pipe head 05, make sealing ring 06 not by direct friction, finally guarantee the sealing effectiveness of sealing ring 06.

The hanging platform 82 of positioning sleeve 08 is hung on the second positioning table 524 of water pipe head 05, and hanging platform 82 is fastened between the second positioning table 524 and sealing ring 06 simultaneously; Outlet pipe 03 is through body 81, and the flange 31 of outlet pipe 03 is fastened between depressed part 822 and sealing ring 06.Thereby realize being fixedly connected with of water pipe head 05 and outlet pipe 03.

Claims (10)

1. an electric heater, comprise shell (01), inner bag (02), outlet pipe (03), water outlet insulation tube (04) and water pipe head (05), it is characterized in that: one end of described water pipe head (05) is stretched in inner bag (02) and arranged, outlet pipe (03) stretches into inner bag (02) setting through water pipe head (05), water outlet insulation tube (04) is tightly connected with water pipe head (05), and water outlet insulation tube (04) is communicated with outlet pipe (03).
2. electric heater according to claim 1, is characterized in that described inner bag (02) is enamel inner container, and the end that inner bag (02) one end is stretched in water pipe head (05) arranges arc-shaped transitional surface (51).
3. electric heater according to claim 1, it is characterized in that described water pipe head (05) is provided with the cavity volume (52) with the first positioning table (521), described water outlet insulation tube (04) upstream extremity is provided with convex shoulder (41), convex shoulder (41) stretches into cavity volume (52) and a sealing ring (06) is pressed in the first positioning table (521), convex shoulder (41) below forms a neck (42), positioning piece is arranged in described neck (42), and described keeper is fixedly connected with water pipe head (05) simultaneously.
4. electric heater according to claim 3, it is characterized in that described sealing ring (06) is the setting of falling peviform, sealing ring (06) has taper wall body (61), and convex shoulder (41) stretches into sealing ring (06) and struts the outer peripheral face (611) of taper wall body (061).
5. electric heater according to claim 4, cavity volume (52) inwall that it is characterized in that described water pipe head (05) is provided with oblique inwall (522), tiltedly inwall (522) coordinates with the outer peripheral face (611) of sealing ring taper wall body (061), and the tilt angle alpha of outer peripheral face (611) is less by 1 ~ 5 than the inclination angle beta of the oblique inwall of cavity volume (522).
6. electric heater according to claim 3, is characterized in that, between the convex shoulder (41) of described water outlet insulation tube (04) and keeper, sealing gasket is set.
7. electric heater according to claim 3, it is characterized in that described keeper is an open type nut (07), cavity volume (52) inwall (523) of water pipe head (05) arranges internal thread, on open type nut (07), have the external screw thread (071) being connected with this internal thread, open type nut (07) is threaded connection water outlet insulation tube (04) is pressed in the cavity volume (52) of water pipe head (05).
8. electric heater according to claim 7, is characterized in that the bottom of described open type nut (07) is provided with hole (72).
9. according to the electric heater described in any one in claim 3 ~ 8, it is characterized in that being also provided with in described cavity volume (52) the second positioning table (524), the second positioning table (524) is linked with positioning sleeve (08), described positioning sleeve (08) comprises body (81) and hanging platform (82), hanging platform (82) end arranges depressed part (822), hanging platform (82) is fastened between the second positioning table (524) and sealing ring (06), described outlet pipe (03) is provided with flange (31), outlet pipe (03) is through body (81), and the flange (31) of outlet pipe (03) is fastened between depressed part (822) and sealing ring (06).
10. electric heater according to claim 8, is characterized in that described electric heater is Horizontal electric water heater, the center line quadrature of the axis of pitch of its inner bag (02) and water pipe head (05).
CN201420108138.9U 2014-03-11 2014-03-11 Electric water heater CN203785270U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420108138.9U CN203785270U (en) 2014-03-11 2014-03-11 Electric water heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420108138.9U CN203785270U (en) 2014-03-11 2014-03-11 Electric water heater

Publications (1)

Publication Number Publication Date
CN203785270U true CN203785270U (en) 2014-08-20

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ID=51321449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420108138.9U CN203785270U (en) 2014-03-11 2014-03-11 Electric water heater

Country Status (1)

Country Link
CN (1) CN203785270U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868239A (en) * 2014-03-11 2014-06-18 广东万和电气有限公司 Electric water heater
CN104613649A (en) * 2015-01-29 2015-05-13 广东百思特管业科技有限公司 Connecting mechanism of working medium inlet and outlet nozzle of coiled pipe heat exchanger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868239A (en) * 2014-03-11 2014-06-18 广东万和电气有限公司 Electric water heater
CN103868239B (en) * 2014-03-11 2017-06-06 广东万和电气有限公司 Electric heater
CN104613649A (en) * 2015-01-29 2015-05-13 广东百思特管业科技有限公司 Connecting mechanism of working medium inlet and outlet nozzle of coiled pipe heat exchanger

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