CN215983256U

CN215983256U - Electric water heater shell and instant electric water heater

Info

Publication number: CN215983256U
Application number: CN202122638257.8U
Authority: CN
Inventors: 魏海波
Original assignee: Cixi Honest Electrical Appliance Co ltd
Current assignee: Cixi Honest Electrical Appliance Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-08
Anticipated expiration: 2031-10-29

Abstract

The application relates to the field of water heaters, in particular to an electric water heater shell and an instant electric water heater, wherein the electric water heater shell comprises a mounting shell and a panel, and the panel is buckled on the front side of the mounting shell; the mounting shell comprises a top cover and a back plate, and the back plate is connected to one side of the top cover, which is far away from the panel, so that the heater can be fixedly mounted; the top cover is provided with a first perforation for the water inlet connecting pipe to penetrate in a sealing way, a second perforation for the water outlet connecting pipe to penetrate in a sealing way and a third perforation for the power supply line to penetrate in a sealing way; a first convex edge is arranged on the upper side plate surface of the top cover, and a second convex edge is arranged on one side of the panel, which is buckled with the mounting shell; when the panel is buckled with the mounting shell, the second rib abuts against the top of the first rib; the tankless electric water heater includes the housing. The instant electric water heater has the effect of avoiding water seepage of the electric water heater as much as possible when the instant electric water heater is installed by adopting upper water outlet.

Description

Electric water heater shell and instant electric water heater

Technical Field

The application relates to the field of water heaters, in particular to an instant electric water heater shell and an instant electric water heater.

Background

When the traditional water heater is used for brushing teeth, washing hands, washing vegetables and the like in winter, cold water in a pipeline needs to be discharged firstly to wait for hot water, so that time and water resources are wasted, and the instant electric water heater can immediately discharge hot water as long as a power supply is connected, so that the instant electric water heater is very convenient when hot water is urgently needed.

At present, an instant electric water heater includes a housing, a heater, a power line, a water inlet connection pipe and a water outlet connection pipe, wherein the housing includes a first housing half and a second housing half, the first housing half is fastened with the second housing half, the heater is disposed in the housing, the water inlet connection pipe and the water outlet connection pipe both penetrate out from the bottom of the housing, one end of the water inlet connection pipe and one end of the water outlet connection pipe are both connected to the heater, the water inlet connection pipe inputs cold water into the heater for heating, and hot water generated by heating is output to a user through the water outlet connection pipe. For convenient use, the instant electric water heater is often installed in kitchens, bathrooms and other places needing hot water to reduce the flow of the hot water and improve the utilization rate of the hot water.

In view of the above technical solutions, the inventor believes that, since the instant electric water heater is directly installed in places such as kitchens and bathrooms where water is needed, when the installation space is narrow and the upper water outlet type installation is necessary, condensed water and water splashed during water use enter the electric water heater along the buckling position of the housing, and water seepage causes short circuit damage to circuit elements in the electric water heater, which affects the service life of the electric water heater.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that when an electric water heater is installed to enable a water inlet connecting pipe and a water outlet connecting pipe to extend upwards, water is easy to leak from a buckling position of a shell to cause that a circuit element is damaged and cannot work normally, the application provides the shell of the electric water heater and an instant heating type electric water heater.

In a first aspect, the present application provides an electric water heater housing, which adopts the following technical scheme:

an electric water heater shell comprises a mounting shell and a panel, wherein the panel is buckled on the front side of the mounting shell; the mounting shell comprises a top cover and a back plate, and the back plate is connected to one side of the top cover, which is far away from the panel, so that the heater can be fixedly mounted; the top cover is provided with a first perforation for the water inlet connecting pipe to penetrate in a sealing way, a second perforation for the water outlet connecting pipe to penetrate in a sealing way and a third perforation for the power supply line to penetrate in a sealing way; a first convex edge is arranged on the upper side plate surface of the top cover, and a second convex edge is arranged on one side of the panel, which is buckled with the mounting shell; when the panel is buckled with the mounting shell, the second rib abuts against the top of the first rib.

By adopting the technical scheme, when the electric water heater is installed, the water inlet connecting pipe, the water outlet connecting pipe and the power line are upwards and hermetically extended out of the shell; when the electric water heater is arranged at a low position, the upper water outlet installation can reduce pipe passes, and is beneficial to the use of the electric water heater; the top of the mounting shell is provided with a top cover, the upper side plate surface of the top cover is provided with a first convex edge, the panel is provided with a second convex edge, and when the panel is buckled with the mounting shell, the second convex edge is abutted against the upper side of the first convex edge; because the upper surface of first bead is higher than the upside surface of top cap, when there is ponding the top cap up side like this, ponding need earlier not the bead just can follow in installation shell and the panel lock joint department infiltration shell, has reduced the probability that the shell was intake.

Preferably, one side of the second rib departing from the panel is connected with a blocking strip, and when the panel is buckled with the mounting shell, the blocking strip abuts against one side of the first rib departing from the panel.

Through adopting above-mentioned technical scheme, when the first bead of second bead butt, the gap of first bead and second bead butt department is sheltered from by the blend stop, and the unable direct contact first bead of water that the panel top produced like this and the butt department of second bead are favorable to preventing that the water at panel top from getting into the shell along the butt department of first bead and second bead when the second bead flows down.

Preferably, be provided with first protruding ring, second protruding ring and third protruding ring on the upside face of top cap, first protruding ring is protruding to be in the top cap is located the outside at first perforation opening border, the protruding ring of second is protruding to be in the top cap is located the outside at second perforation opening border, the protruding ring of third is protruding to be in the top cap is located the outside at third perforation opening border.

Through adopting above-mentioned technical scheme, all be provided with protruding ring in first perforation, second perforation, the third perforation opening border outside, the side of going up of protruding ring lies in on the top cap up side, even have ponding on the top cap like this, can not directly follow first perforation, second perforation and third perforation when the surface of water fails not to have protruding ring and directly gets into in the shell.

Preferably, a first sealing ring is sleeved on the first protruding ring, and the first sealing ring is respectively abutted with the water inlet connecting pipe and the first protruding ring; a second sealing ring is sleeved outside the second bulge and is respectively abutted against the water outlet connecting pipe and the second bulge ring; the third protruding ring is sleeved with a third sealing ring, and the third sealing ring is respectively abutted to the power line and the third protruding ring.

Through adopting above-mentioned technical scheme, first sealing washer will intake and take over and seal with first protruding ring, the second sealing washer will intake and take over and seal with the protruding ring of second, the third sealing washer will intake and take over and seal with the protruding ring of third, make ponding and splash the water bloom be difficult to get into the shell from the gap of first perforation and intake and take over, the gap of second perforation and play water takeover and the gap of third perforation and intake and take over like this, make the water-proof effects of shell further.

Preferably, the top cover comprises a first top plate, two second top plates, two connecting plates and two side top plates, the second top plates are located below the first top plates, the two second top plates are connected to two opposite sides of the first top plates through the two connecting plates respectively, the side top plates correspond to the second top plates one to one, the side top plates are connected to one sides, facing towards the panel, of the second top plates and connected with the connecting plates, first water guide surfaces are arranged at the joints of the first top plates and the connecting plates, second water guide surfaces are arranged at the joints of the connecting plates and the second top plates, and the first protruding ridges protrude on the first top plates and the two side top plates.

By adopting the technical scheme, the second top plate is positioned below the first top plate, and when water begins to accumulate on the first top plate, the water flows to the second top plate from the first top plate along the connecting plate; generally, water falling on the first top plate is collected to the second top plates on two sides of the first top plate, so that the water level on the second top plates is relatively increased; the joint of the first convex edge and the second convex edge on the top of the two side top plates is higher than the water level of the second top plate, so that the water resistance of the shell of the electric water heater is further improved; the junction of first roof and connecting plate is equipped with first water guide surface, and the junction of connecting plate and second roof is equipped with the second water guide surface, is favorable to water to flow fast to the second roof along the connecting plate from first roof like this on, thereby can prevent that a large amount of ponding from making the water level not first bead along the lock joint gap gets into in the shell on the top cap.

Preferably, the first through hole and the second through hole are respectively formed at two ends of the second top plate, and the third through hole is formed in the first top plate.

Through adopting above-mentioned technical scheme, because the third perforation power supply line wears to establish, the power cord is at installation shell in-connection circuit equipment, consequently, the third is perforated to offer on first roof, the ponding ability on it can flow away along the water guide face under the action of gravity, be favorable to the power cord to wear to establish with the waterproof of the circuit system of installation shell in-connection, first perforation and the perforation setting of second are at second roof both ends, be favorable to intaking to take over and the vertical connection of water takeover.

Preferably, the mounting shell further comprises two side plates, the side plates are connected to the surface of one side, facing the panel, of the back plate and connected with the top cover, and a third water guide surface is arranged at the joint of the side plates and the top cover.

Through adopting above-mentioned technical scheme, the curb plate links to each other with the top cap, and the junction is provided with the third and leads the water face, is favorable to ponding on the top cap to flow out fast along the third water face of leading.

Preferably, the two mutually deviated plate surfaces of the two side plates are respectively provided with a third rib, and the two third ribs are respectively connected with two ends of the first rib; when the panel is buckled with the mounting shell, the second convex rib abuts against one side, away from the side plate, of the third convex rib.

Through adopting above-mentioned technical scheme, be provided with the third bead on the face of two curb plates, the both sides face that the two curb plates of third bead perpendicular to are kept away from is outside to be salient, and when the installation shell was buckled with the panel, second bead butt third bead, the lock joint gap of electric water heater shell in the side was located the butt department of second bead and third bead, when like this water flowed down along first curb plate and second curb plate, was difficult for directly following this lock joint gap infiltration shell.

Preferably, the backboard is provided with a protruding platform protruding outwards, and the protruding platform is provided with a clamping interface.

Through adopting above-mentioned technical scheme, be provided with the joint interface on the backplate, be favorable to being connected of water heater shell and water heater installation department, the joint interface setting is on protruding bench simultaneously, is favorable to preventing like this that water from directly getting into the shell from the joint interface when flowing down along the backplate.

In a second aspect, the present application provides an instant electric water heater, which adopts the following technical scheme:

an instant electric water heater comprises the electric water heater shell. Compared with the prior art, the instant electric water heater has the same advantages as the shell of the instant electric water heater, and the description is omitted.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the electric water heater shell comprises a mounting shell and a panel, wherein the top of the mounting shell is provided with a top cover, the upper side surface of the top cover is provided with a first convex edge, the panel is provided with a second convex edge, and when the panel is buckled with the mounting shell, the second convex edge on the panel is abutted against the upper side of the first convex edge; because the upper surface of the first convex edge is higher than the upper side surface of the top cover, when water is accumulated on the upper side surface of the top cover, the accumulated water can penetrate into the shell along the buckling part of the mounting shell and the panel by submerging the convex edge, and the probability of water inlet of the shell is reduced;

2. according to the top cover, the protruding rings are arranged on the outer side faces of the edges of the first through hole, the second through hole and the third through hole, and the upper side faces of the protruding rings are located on the upper side face of the top cover, so that even if water is accumulated on the top cover, the water cannot directly enter the shell along the first through hole, the second through hole and the third through hole when the water surface does not pass through the protruding rings;

3. in the application, the first top plate on the top cover is arranged above the second top plate, and accumulated water on the first top plate can flow to the second top plate, so that the water level of the first top plate is reduced; on the basis, a step surface is formed at the connecting part of the top cover and the side plate, so that the height of accumulated water at the second top plate is reduced, and the water resistance of the shell of the electric water heater can be further improved.

Drawings

Fig. 1 is an overall schematic diagram of an instantaneous electric water heater according to an embodiment of the present application.

Fig. 2 is an exploded view of an electric instant heating water heater according to an embodiment of the present application.

Fig. 3 is an exploded view of the outer shell of the electric water heater according to the embodiment of the present application.

Fig. 4 is an enlarged view of a portion a in fig. 3 of the embodiment of the present application.

Fig. 5 is an exploded view of the outer shell of an electric water heater according to another embodiment of the present application.

Fig. 6 is an enlarged view at B in fig. 5 of the embodiment of the present application.

Fig. 7 is a schematic structural diagram of a top cover of an embodiment of the present application.

Fig. 8 is an enlarged view at C in fig. 7 of the embodiment of the present application.

Fig. 9 is a schematic view of a seal ring installation according to an embodiment of the present application.

Description of reference numerals: 1. a panel; 11. a base plate; 12. a second rib; 13. blocking strips; 2. mounting a shell; 21. a top cover; 211. a first top plate; 212. a second top plate; 213. a connecting plate; 2131. a first water conducting surface; 2132. a second water guide surface; 214. a side roof panel; 215. a first perforation; 2151. a first raised ring; 2152. a first seal ring; 216. a second perforation; 2161. a second raised ring; 2162. a second seal ring; 217. a third perforation; 2171. a third raised ring; 2172. a third seal ring; 22. a side plate; 221. a third water guide surface; 222. a third rib; 23. a back plate; 231. a projection table; 232. a card interface; 24. a first rib; 3. a water inlet connecting pipe; 4. a water outlet connecting pipe; 5. a power line; 6. a heater.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses an instant electric water heater, referring to fig. 1 and 2, comprising an electric water heater shell, a heater 6, a power line 5, a water inlet connecting pipe 3 and a water outlet connecting pipe 4.

The heater 6 is fixedly arranged in the shell of the electric water heater, one end of the water inlet connecting pipe 3 and one end of the water outlet connecting pipe 4 are connected with the heater 6, and the other end of the water inlet connecting pipe 3 and the other end of the water outlet connecting pipe 4 extend out of the shell of the electric water heater; one end of the power line 5 is connected with the heater 6, and the other end thereof penetrates out of the shell of the electric water heater to be connected with an external power supply. Therefore, an external power supply supplies power to the electric heater through a power line 5, cold water is input into the heater 6 through the water inlet connecting pipe 3 for heating, and hot water generated by heating is output to a user through the water outlet connecting pipe 4. The heater 6, the power line 5, the water inlet connecting pipe 3 and the water outlet connecting pipe 4 are all the prior art, the specific structure of the heater can be adjusted according to the needs, and the heater is not a specific technical feature of the present application, and is not further described herein.

The electric water heater shell in this embodiment, refer to fig. 1, includes installation shell 2 and panel 1, and panel 1 lock joint is in the front side of installation shell 2, and water inlet connecting pipe 3, water outlet connecting pipe 4 and power cord 5 all stretch out of installation shell 2 from top cap 21.

Referring to fig. 3 and 4, the mounting case 2 includes a top cover 21, two side plates 22, and a back plate 23 which are integrally formed. The two side plates 22 are respectively connected with the left side and the right side of the back plate 23, and the top cover 21 is connected with the top of the back plate 23. A bottom plate 11 is integrally formed on the lower side of the panel 1, the bottom plate 11 is buckled on the lower portion of a back plate 23, the left side surface and the right side surface of the panel 1 are buckled with two side plates 22 respectively, and the top of the panel 1 is buckled with a top cover 21, so that the panel 1 and the mounting shell 2 are relatively fixed.

The side of the top cover 21 facing the panel 1 is integrally formed with a first rib 24, and the panel 1 is integrally formed with a second rib 12. When the panel 1 is buckled with the mounting shell 2, the second rib 12 is abutted against the first rib 24, so that when water is accumulated on the top cover 21, the first rib 24 plays a role in retaining water, and the accumulated water is not easy to enter the shell of the electric water heater from the buckling part.

Wherein, an organic whole is provided with at least one protruding platform 231 on the backplate 23, specifically is equipped with two in this embodiment, and two protruding platforms 231 set up along the horizontal direction interval. Each protruding platform 231 is provided with a clamping interface 232, so that the shell of the electric water heater can be fixedly connected to a wall body which is pre-provided with a buckle through the clamping interface 232, and the electric water heater is convenient to use; the protruding platform 231 can reduce the water drops sliding down the back plate 23 into the electric water heater housing.

Referring to fig. 5 and 6, in order to further enhance the water-tightness of the outer casing of the electric water heater, another embodiment of the present embodiment may further include a barrier strip 13 integrally formed on a side of the second protruding rib 12 facing away from the panel 1. When panel 1 and installation shell 2 lock joint, the one side that first bead 24 deviates from panel 1 of blend stop 13 butt, like this when there is ponding at panel 1 top, water can flow to top cap 21 along blend stop 13 on, and can not follow first bead 24 and second bead 12 butt infiltration electric water heater shell in. The unable direct contact first bead of water that produces at panel top and the butt department of second bead are favorable to preventing that the water at panel top from getting into the shell from the butt department of first bead and second bead when flowing down along the second bead.

Referring to fig. 7 and 8, the top cover 21 includes a first top plate 211, two second top plates 212, two connecting plates 213, and two side top plates 214, which are integrally formed. The first top plate 211 is located above the second top plate 212, the two second top plates 212 are respectively connected to two opposite sides of the first top plate 211 through two connecting plates 213, the side top plates 214 correspond to the second top plates 212 one by one, the side top plates 214 are connected to one side of the second top plate 212 facing the panel 1 and connected with the connecting plates 213, and the first protruding ribs 24 protrude on the first top plate 211 and the side top plates 214. Thus, the top cover 21 is protruded upward to form a boss, and the accumulated water of the first top plate 211 at the top of the boss can flow along the connection plate 213 to the second top plate 212.

In this embodiment, in order to make the accumulated water on the first top plate 211 more easily flow to the second top plate 212, the connection plate 213 is connected to the first top plate 211 and the second top plate 212 at an angle.

In addition, a first water guide surface 2131 is formed at the connecting position of the connecting plate 213 and the first top plate 211 in a smooth and excessive manner, and a second water guide surface 2132 is formed at the connecting position of the connecting plate 213 and the second top plate 212 in a smooth and excessive manner, so that accumulated water on the first top plate 211 flows onto the connecting plate 213 along the first water guide surface 2131 and then flows onto the second top plate 212 through the second water guide surface 2132, and excessive accumulated water on the first top plate 211 is prevented. The first water guide surface 2131 and the second water guide surface 2132 are curved into arc surfaces to make the connection smoother.

Second roof 212 is connected to one side of curb plate 22, and the curb plate 22 top is to the inboard crooked setting of installation shell 2 for the face of curb plate 22 forms third water guide surface 221, and third water guide surface 221 links to each other with one side that first roof 211 was kept away from to second roof 212, is favorable to ponding on the second roof 212 to flow down along curb plate 22 like this.

In addition, a third rib 222 is integrally formed on the surface of the side plate 22, and when the panel 1 is fastened to the mounting case 2, the second rib 12 abuts against a side of the third rib 222 away from the side plate 22. The third rib 222 functions as a water barrier, so that when water flows down along the first side plate 22 and the second side plate 22, the water is not easy to directly penetrate into the housing along the fastening gap.

One of the two second top plates 212 is provided with a first through hole 215 for the water inlet connecting pipe 3 to pass through in a sealing manner, the other one is provided with a second through hole 216 for the water outlet connecting pipe 4 to pass through in a sealing manner, and the first top plate 211 is provided with a third through hole 217 for the power line 5 to pass through in a sealing manner. In addition, a first raised ring 2151 is raised on the outer side of the opening edge of the first through hole 215 of the second top plate 212, a second raised ring 2161 is raised on the outer side of the opening edge of the second through hole 216 of the second top plate 212, a third raised ring 2171 is raised on the outer side of the opening edge of the third through hole 217 of the first top plate 211, and the three raised rings are integrally injection-molded with the top cover 21. Due to the existence of the raised ring, even if water is accumulated on the top cover 21, the water cannot directly enter the housing along the first through hole 215, the second through hole 216 and the third through hole 217 when the water surface fails to pass through the raised ring, so that the probability that the water accumulated on the top cover 21 enters the mounting shell 2 from the first through hole 215, the second through hole 216 and the third through hole 217 is reduced.

Referring to fig. 9, a first sealing ring 2152 is sleeved on the first protrusion ring 2151, and the first sealing ring 2152 abuts against the water inlet connection pipe 3 and the first protrusion ring 2151, so that a gap between the first through hole 215 and the water inlet connection pipe 3 is sealed, and the water inlet connection pipe 3 is sealed to pass through. The second sealing ring 2162 is sleeved outside the second protrusion, and the second sealing ring 2162 is respectively abutted against the water outlet connecting pipe 4 and the second protrusion ring 2161, so that a gap between the second through hole 216 and the water outlet connecting pipe 4 is sealed, and the water outlet connecting pipe 4 is sealed and penetrated. The third protruding ring 2171 is sleeved with a third sealing ring 2172, and the third sealing ring 2172 is respectively abutted against the power line 5 and the third protruding ring 2171, so that a gap between the third through hole 217 and the power line 5 is sealed, and the power line 5 is sealed to penetrate through. The first seal ring 2152, the second seal ring 2162 and the third seal ring 2172 in this embodiment are made of rubber, and may also be made of other plastic materials such as silica gel.

The implementation principle of the shell of the electric water heater in the embodiment of the application is as follows:

when the condensed water or splashed water drops on the top cover 21, the water on the first top plate 211 effectively reduces the accumulated water to directly enter the shell of the electric water heater along the gap at the joint of the first rib 24 and the second rib 12 due to the blocking effect of the first rib 24; the accumulated water flows onto the second top plate 212 along the first water guide surface 2131 and the second water guide surface 2132 and is collected with the accumulated water falling on the second top plate 212; the side of the second top plate 212 facing the panel 1 is blocked by a side top plate 214, so that the water flows to the side plate 22 along a third water guide surface 221; the third rib 222 on the side plate 22 blocks the water flow and prevents the water flow from entering the electric water heater along the fastening seam on the side of the electric water heater shell. Corresponding protruding rings are arranged at the positions of the top cover 21 with the first through hole 215, the second through hole 216 and the third through hole 217, and a sealing gasket is correspondingly arranged outside each protruding ring, so that water flow can be prevented from permeating into the shell of the electric water heater from the positions with the through holes.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An electric water heater shell is characterized in that: the panel comprises a mounting shell (2) and a panel (1), wherein the panel (1) is buckled on the front side of the mounting shell (2); the mounting shell (2) comprises a top cover (21) and a back plate (23), and the back plate (23) is connected to one side, away from the panel (1), of the top cover (21) so as to fixedly mount the heater (6); the top cover (21) is provided with a first through hole (215) for the water inlet connecting pipe (3) to be penetrated in a sealing way, a second through hole (216) for the water outlet connecting pipe (4) to be penetrated in a sealing way and a third through hole (217) for the power supply wire (5) to be penetrated in a sealing way; a first rib (24) is arranged on the surface of an upper side plate (22) of the top cover (21), and a second rib (12) is arranged on one side of the panel (1) buckled with the mounting shell (2); when the panel (1) is buckled with the mounting shell (2), the second rib (12) abuts against the top of the first rib (24).

2. The housing of claim 1, wherein: one side of the second rib (12) departing from the panel (1) is connected with a blocking strip (13), and when the panel (1) is buckled with the mounting shell (2), the blocking strip (13) is abutted against one side of the first rib (24) departing from the panel (1).

3. The housing of claim 1, wherein: a first protruding ring (2151), a second protruding ring (2161) and a third protruding ring (2171) are arranged on the upper side plate (22) of the top cover (21), the first protruding ring (2151) protrudes out of the opening edge of the first through hole (215) of the top cover (21), the second protruding ring (2161) protrudes out of the opening edge of the second through hole (216) of the top cover (21), and the third protruding ring (2171) protrudes out of the opening edge of the third through hole (217) of the top cover (21).

4. The electric water heater outer shell according to claim 3, wherein: the first protruding ring (2151) is sleeved with a first sealing ring (2152), and the first sealing ring (2152) is respectively abutted against the water inlet connecting pipe (3) and the first protruding ring (2151); a second sealing ring (2162) is sleeved outside the second protrusion, and the second sealing ring (2162) is respectively abutted against the water outlet connecting pipe (4) and the second protrusion ring (2161); and a third sealing ring (2172) is sleeved on the third bulge ring (2171), and the third sealing ring (2172) is respectively abutted against the power line (5) and the third bulge ring (2171).

5. The housing of claim 1, wherein: the top cover (21) comprises a first top plate (211), two second top plates (212), two connecting plates (213) and two side top plates (214), the second top plates (212) are positioned below the first top plate (211), the two second top plates (212) are respectively connected to two opposite sides of the first top plate (211) through the two connecting plates (213), the side top plates (214) correspond to the second top plates (212) one by one, the side top plates (214) are connected to one side, facing the panel (1), of the second top plates (212) and are connected with the connecting plates (213), a first water guide surface (2131) is arranged at the joint of the first top plate (211) and the connecting plate (213), a second water guide surface (2132) is arranged at the joint of the connecting plate (213) and the second top plate (212), the first rib (24) is protruded on the first top plate (211) and the two side top plates (214).

6. The electric water heater outer shell according to claim 5, wherein: the first through hole (215) and the second through hole (216) are respectively arranged at two ends of the second top plate (212), and the third through hole (217) is arranged on the first top plate (211).

7. The housing of claim 1, wherein: the mounting shell (2) further comprises two side plates (22), the side plates (22) are connected to the back plate (23) towards the side plate (22) of the panel (1) and connected with the top cover (21), and a third water guide surface (221) is arranged at the connection position of the side plates (22) and the top cover (21).

8. The electric water heater outer shell according to claim 7, wherein: third ribs (222) are respectively arranged on two mutually-deviated plate surfaces of the two side plates (22), and the two third ribs (222) are respectively connected to two ends of the first rib (24); when the panel (1) is buckled with the mounting shell (2), the second rib (12) abuts against one side, away from the side plate (22), of the third rib (222).

9. The housing of claim 1, wherein: the backplate (23) is provided with a protruding platform (231) in an outward protruding manner, and the protruding platform (231) is provided with a clamping interface (232).

10. An instant electric water heater is characterized in that: comprising an electric water heater housing according to any of claims 1-9.