CN112833539A - Water heater - Google Patents

Abstract

The invention belongs to the technical field of water heaters, and particularly relates to a water heater. The invention aims to solve the problem that the appearance of the existing water heater is not beautiful because the electricity-proof wall cover and the sewage discharge valve cover are not in the same plane. The water heater of the invention comprises a shell, an inner container, a blow-down valve, an electricity-proof wall cover and a blow-down valve cover; the inner bag sets up in the shell, be provided with the blowoff valve on the inner bag, the position that the shell corresponds the blowoff valve is provided with prevents electric wall cover, prevent that electric wall cover is gone up and is provided with the handle hole to the position of blowoff valve, prevent being provided with cooperation portion on the electric wall cover, be provided with joint portion on the blowoff valve cover, the blowoff valve gap passes through joint portion and prevents cooperation portion joint and the closing cap handle hole on the electric wall cover, the blowoff valve gap joint is in preventing electric wall cover, the blowoff valve gap with prevent having avoided setting up the bounce switch between the electric wall cover, the blowoff valve gap with prevent that electric wall cover sets up in the coplanar, the outward appearance of water heater is pleasing to the eye.

Description

Water heater

Technical Field

The invention belongs to the technical field of water heaters, and particularly relates to a water heater.

Background

The water heater is a common household appliance, and it includes inner bag and shell usually, and the inner bag sets up in the shell, and the inner bag is used for the water storage, connects the blowoff valve on the inner bag, and the blowoff valve is arranged in discharging the filth in the inner bag outside the inner bag, and the position that corresponds the blowoff valve on the shell is provided with prevents electric wall cover, prevents that electric wall cover corresponds the position of blowoff valve and is provided with the handle hole, prevents that electric wall cover corresponds the position of handle hole and is provided with the blowdown valve gap. Specifically, the blowdown valve gap is installed on preventing electric wall cover through the bounce switch, can realize through pressing the bounce switch that the blowdown valve gap keeps away from preventing electric wall cover, and then operates the blowdown valve. However, the bounce switch has a pressing stroke, and after the sewage valve cover and the electricity-proof wall cover are installed, the sewage valve cover and the electricity-proof wall cover are not in the same plane, so that the appearance of the water heater is not attractive, and the user experience is reduced.

Disclosure of Invention

In order to solve the above-mentioned problem in the prior art, namely solve the question that the appearance is not esthetic that the existing water heater prevents the electric wall cover and blowdown valve cover from being in a level, the invention provides a kind of water heater, the water heater includes outer casing, inner container, blowdown valve, prevents the electric wall cover and blowdown valve cover;

the inner bag sets up in the shell, is provided with the blowoff valve on the inner bag, and the position that the shell corresponds the blowoff valve is provided with prevents electric wall cover, prevents that electric wall cover is provided with the handle hole to the position of blowoff valve, prevents being provided with cooperation portion on the electric wall cover, is provided with joint portion on the blowoff valve cover, and the blowoff valve gap passes through joint portion and prevents cooperation portion joint and the closing cap handle hole on the electric wall cover.

In the preferred technical scheme of the water heater, the position of the electricity-proof wall cover corresponding to the sewage valve cover is provided with a sinking platform sinking towards the inner side of the electricity-proof wall cover, and the sinking platform is provided with an operation hole and is provided with the sewage valve cover.

In the preferred technical scheme of above-mentioned water heater, cooperation portion is including setting up the first bayonet socket on heavy platform, and joint portion is including setting up the first arch on the blowdown valve gap, and first protruding joint is in first bayonet socket.

In the above-mentioned water heater's preferred technical scheme, the heavy platform is provided with the card muscle that is located outside first bayonet socket and with first protruding butt towards one side of shell.

In the preferred technical scheme of the water heater, the matching part comprises a clamping hole arranged on the sinking platform and a second bulge arranged on one side of the electricity-proof wall cover facing the shell, and the second bulge is positioned on one side of the clamping hole departing from the first bayonet;

the clamping portion comprises an extension piece arranged on the sewage discharge valve cover and a third protrusion arranged on the extension piece, the extension piece is arranged in the clamping hole in a penetrating mode, and the second protrusion is clamped with the third protrusion.

In the preferred technical scheme of the water heater, the magnet is arranged on the sewage discharge valve cover, the electric-proof wall cover is provided with the microswitch connected with a control circuit for controlling the power-off and the power-on of the whole water heater, the magnet is far away from the microswitch, and the power-off of the whole water heater is realized.

In the preferred technical scheme of above-mentioned water heater, the blowdown valve gap is provided with first installing frame towards the one side of preventing the electric wall cover, is provided with the fourth arch in the lateral wall of first installing frame, and magnet passes through the fourth arch to be installed in first installing frame.

In the preferred technical scheme of above-mentioned water heater, prevent that electric wall cover deviates from one side of blowdown valve gap and is provided with the second installing frame, is provided with the fifth arch in the lateral wall of second installing frame, and micro-gap switch passes through the fifth arch and installs in the second installing frame.

In the preferred technical scheme of above-mentioned water heater, prevent that electric wall cover deviates from one side of blowdown valve gap and be provided with the adjusting block of adjustment second installing frame mounting height.

In the preferred technical scheme of the water heater, the sewage discharge valve cover is provided with the threaded column and is in threaded connection with the electricity-proof wall cover through the threaded column.

The inner container of the water heater is arranged in the shell, the drain valve is arranged on the inner container, the shell is provided with an electricity-proof wall cover corresponding to the position of the drain valve, the electricity-proof wall cover is provided with an operation hole opposite to the position of the drain valve, the electricity-proof wall cover is provided with a matching part, the drain valve cover is provided with a clamping part, the drain valve cover is clamped with the matching part on the electricity-proof wall cover through the clamping part and covers the operation hole in a sealing way, the drain valve cover is clamped on the electricity-proof wall cover, an elastic jump switch is prevented from being arranged between the drain valve cover and the electricity-proof wall cover, the drain valve cover and the electricity-proof wall cover are arranged in the same plane, the appearance of the water heater is attractive, and the.

Drawings

Preferred embodiments of the water heater of the present invention will be described with reference to the accompanying drawings in conjunction with the water heater. The attached drawings are as follows:

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

FIG. 2 is an assembly view of a drain cover and an electricity-proof wall cover in accordance with an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the electricity-proof wall covering of the embodiment of the invention;

FIG. 4 is another perspective view schematic diagram of the electricity-proof wall covering of the embodiment of the invention;

fig. 5 is a schematic structural view of a drain valve cover according to an embodiment of the present invention.

Description of reference numerals:

10: a housing;

20: an inner container;

30: a blowoff valve;

40: an electricity-proof wall cover;

41: an operation hole;

42: sinking a platform;

43: a top cover;

44: enclosing plates;

45: a first bayonet;

46: clamping ribs;

47: a clamping hole;

48: a second protrusion;

49: a pit;

401: a microswitch;

402: a second mounting frame;

403: a fifth projection;

404: an adjusting block;

50: a sewage discharge valve cover;

51: a first protrusion;

52: an extension member;

53: a third protrusion;

54: a magnet;

55: a first mounting frame;

56: a fourth protrusion;

57: a threaded post.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications.

Next, it should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "inside", "outside", and the like are based on the direction or positional relationship shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or a member must have a specific orientation, be configured in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The water heater includes the shell usually and sets up the inner bag in the shell, and water has been stored in the inner bag, is provided with the blowoff valve on the inner bag, and the blowoff valve is used for discharging the sewage that the clearance inner bag formed usually to the inner bag outside, and the position that the shell corresponds the blowoff valve is provided with prevents electric wall cover, prevents that electric wall cover is last to be provided with the handle hole corresponding to the position of blowoff valve, prevents that electric wall cover corresponds the position of handle hole and installs the blowdown valve gap.

An operator opens the sewage discharge valve cover to expose the sewage discharge valve, so that sewage formed by cleaning the inner container of the water heater is discharged from the sewage discharge valve. In the process of cleaning the inner container of the water heater, the blow-down valve is connected with the inner container, the inner container is internally provided with an electric heating element for heating water, when the electric heating element has electric leakage, the electric leakage can be transmitted to the blow-down valve, and an operator directly operates the blow-down valve to cause electric shock.

Further, the blowoff valve is usually installed on the electricity-proof wall cover through a bounce switch, and the blowoff valve cover can be kept away from the electricity-proof wall cover by pressing the blowoff valve cover or by pressing a button connected with the blowoff valve cover, so that the complete machine power-off of the water heater is realized. The blowdown valve cover is arranged on the electricity-proof wall cover through the bouncing switch, although the complete machine power-off of the water heater can be realized, the blowdown valve cover and the electricity-proof wall cover are not in the same plane when the blowdown valve cover is arranged on the electricity-proof wall cover due to the fact that the bouncing switch has one working stroke, and the appearance of the water heater is affected. In order to solve the problem that the sewage valve cover and the electricity-proof wall cover are not in the same plane, the embodiment of the invention provides the water heater, so that the sewage valve cover and the electricity-proof wall cover are in the same plane, and the appearance of the water heater is attractive.

As shown in fig. 1, the water heater provided by the embodiment of the invention comprises a shell 10, an inner container 20, a drain valve 30, an electricity-proof wall cover 40 and a drain valve cover 50.

In the embodiment shown in fig. 1 and 2, the inner container 20 is formed with a cavity for storing water, the inner container 20 is disposed in the outer shell 10, end caps are disposed at two end openings of the outer shell 10, the cavity formed by the end caps and the outer shell 10 is used for placing the inner container 20, and the end caps and the outer shell 10 are used for protecting the inner container 20. The inner container 20 is provided with the blowoff valve 30, the blowoff valve 30 can discharge the sewage formed when the inner container 20 is cleaned out of the inner container 20, the structure of the blowoff valve 30 is not particularly limited as long as the sewage in the inner container 20 of the water heater can be discharged. The housing 10 is provided with an electricity-proof wall cover 40 at a position corresponding to the blowoff valve 30, and an operation hole 41 is provided on the electricity-proof wall cover 40 at a position opposite to the blowoff valve 30, the operation hole 41 being used for an operator to operate the blowoff valve 30, for example, for the operator to open the blowoff valve 30, or for the operator to close the blowoff valve 30, and the operation hole 41 may be, for example, a circular hole in shape.

Usually, still connect inlet tube and outlet pipe on the inner bag 20, the inlet tube is arranged in for adding water in the inner bag 20, the outlet pipe is used for discharging the water in the inner bag 20, correspondingly, still be provided with into water on the electricity-proof wall cover 40 and dodge the hole and go out the water and dodge the hole, the hole is dodged to the entering water and is used for dodging the inlet tube, the inlet tube passes into the water and dodges the hole and communicate with inner bag 20, it dodges the hole and is used for dodging the outlet pipe to go out the water, the outlet pipe passes out the hole of dodging and draws forth the water in the inner bag.

In the water heater of the embodiment of the invention, the electricity-proof wall cover 40 is also provided with a matching part, the sewage valve cover 50 is provided with a clamping part, and the sewage valve cover 50 is clamped with the matching part on the electricity-proof wall cover 40 through the clamping part and covers the operation hole 41 in a sealing way. The blowdown valve cover 50 is clamped on the electricity-proof wall cover 40, and the blowdown valve cover 50 and the electricity-proof wall cover 40 are located in the same plane, namely, no section potential difference exists after the blowdown valve cover 50 and the electricity-proof wall cover 40 are installed. In a specific embodiment, the opposite sides of the sewage valve cover 50 are provided with clamping portions, the electricity-proof wall cover 40 is provided with matching portions for clamping with the clamping portions on the opposite sides of the sewage valve cover 50, and the sewage valve cover 50 is clamped with the matching portions correspondingly arranged on the electricity-proof wall cover 40 through the clamping portions on the opposite sides of the sewage valve cover 50.

In the water heater of the embodiment of the invention, the inner container 20 is arranged in the shell 10, the drain valve 30 is arranged on the inner container 20, the shell 10 is provided with the electricity-proof wall cover 40 corresponding to the position of the drain valve 30, the position of the electricity-proof wall cover 40, which is opposite to the drain valve 30, is provided with the operation hole 41, the drain valve cover 50 is clamped with the matching part on the electricity-proof wall cover 40 through the clamping part and covers the operation hole 41 in a sealing way, the drain valve cover 50 is clamped on the electricity-proof wall cover 40, the bouncing switch is avoided between the drain valve cover 50 and the electricity-proof wall cover 40, the drain valve cover 50 and the electricity-proof wall cover 40 are arranged in the same plane, the appearance of the water heater is beautiful, and.

In the embodiment shown in fig. 3 and 5, the electricity-proof wall cover 40 is provided with a sinking platform 42 sinking towards the inner side thereof corresponding to the position of the sewage valve cover 50, the inner side of the electricity-proof wall cover 40 refers to the side of the electricity-proof wall cover 40 facing the inner container 20, and the sinking platform 42 is provided with an operation hole 41 and is provided with the sewage valve cover 50. The sewage valve cover 50 and the electricity-proof wall cover 40 can be positioned in the same plane by installing the sewage valve cover 50 on the sinking platform 42, and the appearance of the water heater is attractive. Specifically, the electricity-proof wall cover 40 includes a top cover 43 and a coaming 44, the coaming 44 is disposed at an included angle with the top cover 43, the coaming 44 is disposed in the circumferential direction of the top cover 43, and the sinking platform 42 is disposed on the top cover 43 and the coaming 44.

In the embodiment shown in fig. 3 and 5, the sewage valve cover 50 is L-shaped, the fitting portion includes a first bayonet 45 disposed on the sinking platform 42 corresponding to the short side of the sewage valve cover 50, the first bayonet 45 may be a clamping hole, for example, the axis of the clamping hole and the top cover 43 may be disposed in parallel, the clamping portion includes a first protrusion 51 disposed on the short side of the sewage valve cover 50, the first protrusion 51 protrudes toward the long side of the sewage valve cover 50, and the first protrusion 51 is clamped in the first bayonet 45.

In a specific example, the first protrusion 51 may be a solid block-shaped protrusion or a hollow block-shaped protrusion. In the specific embodiment shown in fig. 5, the first protrusion 51 may be, for example, a U-shaped plate, a bottom plate of which is, for example, disposed parallel to a long side of the sewage valve cover 50, and a bottom plate of which is open to face away from the long side of the sewage valve cover 50, and is attached to the short side of the sewage valve cover 50.

In the embodiment shown in fig. 2 and 4, the sinking platform 42 corresponding to the short side of the sewage valve cover 50 is provided with the clamping rib 46 which is located outside the first bayonet 45 and is abutted against the first protrusion 51, and the clamping rib 46 not only increases the structural strength of the first bayonet 45, but also increases the abutting area with the first protrusion 51, so that the clamping of the first bayonet 45 and the first protrusion 51 is more reliable.

In the specific embodiment shown in fig. 3, 4 and 5, the housing 10 is cylindrical, the number of the first bayonets 45 is two, the number of the first protrusions 51 is two, the two first bayonets 45 are arranged along the axial direction of the housing 10, and correspondingly, the two first protrusions 51 are arranged along the axial direction of the housing 10. The number of the clamping ribs 46 which are positioned outside the first bayonet 45 and abutted against one first protrusion 51 is three, and the two first protrusions 51 are respectively abutted against the two clamping ribs 46 which are positioned outside the two first bayonets 45.

In the embodiment shown in fig. 3 and 4, the fitting portion includes a locking hole 47 provided on the counter sink 42 corresponding to the long side of the sewage valve cover 50, and a second protrusion 48 provided on the top of the electricity-proof wall cover 40 and located at the locking hole 47 away from the first locking opening 45.

In a specific example, as shown in fig. 3, a concave pit 49 is provided in the sink 42 corresponding to the long side of the sewage valve cover 50, the inner side of the sink 42 is directed to the side of the inner tank 20, the concave pit 49 is located on the outer peripheral side of the operation hole 41, and an engaging hole 47 is provided in the side wall of the concave pit 49 away from the operation hole 41.

In a specific example, the second protrusion 48 is provided on the top of the electricity-proof wall cover 40, the second protrusion 48 is located at one side of the depressed stage 42 corresponding to the long side of the sewage valve cover 50, the second protrusion 48 is located away from the depressed stage 42 corresponding to the short side of the sewage valve cover 50, and the second protrusion 48 is protrudingly provided facing the housing 10.

In the specific embodiment shown in fig. 4, the second projection 48 is a U-shaped projection, and the opposite sides of the second projection 48 are triangular, that is, the second projection 48 is U-shaped when viewed in the direction perpendicular to the top cover 43 of the electricity preventing wall cover 40, and the second projection 48 is triangular when viewed in the axial direction of the casing 10.

In the embodiment shown in fig. 5, the locking portion includes an extension 52 disposed on a long side of the waste valve cover 50, and a third protrusion 53 disposed on the extension 52, the extension 52 is inserted into the locking hole 47, and the second protrusion 48 is locked with the third protrusion 53.

In a specific example, the extension piece 52 is arranged on one side of the sewage valve cover 50 facing the electricity-proof wall cover 40, the extension piece 52 is arranged on one end of the sewage valve cover 50 departing from the short side of the sewage valve cover, the extension direction of the extension piece 52 is parallel to the plane of the long side of the extension piece, and the third protrusion 53 protrudes towards one side of the sewage valve cover 50 departing from the electricity-proof wall cover 40. The third projection 53 may be, for example, a triangular projection.

According to the water heater provided by the embodiment of the invention, the extension piece 52 penetrates through the clamping hole 47 from the pit 49, the third protrusion 53 on the extension piece 52 is abutted against the second protrusion 48 on the electricity-proof wall cover, the long side of the sewage valve cover 50 is clamped with the electricity-proof wall cover 40, the first protrusion 51 arranged on the sewage valve cover 50 is clamped into the first bayonet 45 and abutted against the clamping rib 46, the short side of the sewage valve cover 50 is clamped with the electricity-proof wall cover 40, the long side and the short side of the sewage valve cover 50 are connected with the electricity-proof wall cover 40 in a clamping mode, the connection mode is simple, parts such as a bounce switch are avoided, the number of the parts is reduced, and the cost is reduced.

In the embodiment shown in fig. 2 and 5, the magnet 54 is arranged on the sewage valve cover 50, the microswitch 401 connected with the control circuit for controlling the power-off and the power-on of the whole water heater is arranged on the electricity-proof wall cover 40, the magnet 54 is far away from the microswitch 401, the power-off of the whole water heater is realized, the magnet 54 is close to the microswitch 401, and the power-on of the whole water heater is realized.

The micro switch 401 is a contact mechanism having a minute contact interval and a snap action mechanism and performing a switching operation with a predetermined stroke and a predetermined force. The microswitch 401 is covered by a shell, and the outside of the microswitch is provided with a driving rod, so the microswitch is called a sensitive switch because the contact pitch of the switch is smaller.

After the blowdown valve cover 50 is detached from the electricity-proof wall cover 40, the magnet 54 arranged on the blowdown valve cover 50 is far away from the microswitch 401, the whole water heater is powered off, the blowdown valve 30 arranged on the liner 20 cannot be powered on, personnel can ensure personnel safety when operating the blowdown valve 30, after the blowdown valve 30 is installed on the electricity-proof wall cover 40, the magnet 54 on the blowdown valve cover 50 is close to the microswitch 401, the whole water heater is powered on, and the normal work of the water heater is ensured.

In the embodiment of the water heater shown in fig. 5, the side of the sewage valve cover 50 facing the electricity-proof wall cover 40 is provided with a first mounting frame 55, a fourth protrusion 56 is provided in the side wall of the first mounting frame 55, and the magnet 54 is mounted in the first mounting frame 55 through the fourth protrusion 56. In a specific example, the first mounting frame 55 may be rectangular, for example, fourth protrusions 56 may be disposed on two opposite sidewalls of the first mounting frame 55, and the fourth protrusions 56 may be triangular protrusions protruding toward the inside of the first mounting frame 55, for example.

In the embodiment of the water heater shown in fig. 2 and 4, the side of the electricity-proof wall cover 40 facing away from the sewage valve cover 50 is provided with a second mounting frame 402, a fifth bulge 403 is arranged in the side wall of the second mounting frame 402, and the micro switch 401 is mounted in the second mounting frame 402 through the fifth bulge 403. In a specific example, the second mounting frame 402 may be rectangular, for example, fifth protrusions 403 are disposed on two opposite sidewalls of the second mounting frame 402, and the fifth protrusions 403 may be triangular protrusions protruding toward the inside of the second mounting frame 402, for example.

In the embodiment of the water heater shown in fig. 2 and 4, the side of the electricity-proof wall cover 40 away from the sewage valve cover 50 is provided with an adjusting block 404 for adjusting the installation height of the second installation frame 402. In a specific example, the adjusting block 404 is in a long strip shape, one end of the adjusting block 404 extends into the inner part of the sunken platform 42 corresponding to the short side of the sewage valve cover 50, and the other end of the adjusting block 404 is arranged opposite to a concave pit 49, and the concave pit 49 is the concave pit 49 close to the center of the electricity-proof wall cover 40 in the axial direction of the shell 10. The second mounting frame 402 is arranged on the adjusting block 404, the mounting height of the second mounting frame 402 can be adjusted through the adjusting block 404, the mounting height of the microswitch 401 arranged on the second mounting frame 402 is adjusted, the distance between the magnet 54 and the microswitch 401 is adjusted, and reliable power off and power on of the water heater are guaranteed.

In the particular embodiment of the water heater shown in fig. 2 and 4, one end of the catch 46 is disposed on the adjustment block 404, and the other end of the catch 46 is disposed on the counter sink 42 corresponding to the short side of the waste valve cover 50. In a specific example, the number of the clamping ribs 46 arranged at one first bayonet 45 is three, and after the ends of the three clamping ribs 46 connected with the sunken platforms 42 are connected through the intermediate connecting piece, the intermediate connecting piece is connected with the sunken platform 42 corresponding to the short side of the sewage valve cover 50. Specifically, the three snap ribs 46 of the intermediate connector are integrally formed.

In the embodiment of the water heater shown in fig. 5, the drain cover 50 is provided with a threaded post 57, and the drain cover 50 is threadedly connected to the electricity-proof wall cover 40 through the threaded post 57. Through the joint portion on the blowdown valve gap 50 and the cooperation portion on preventing the electric wall cover 40, with the joint of blowdown valve gap 50 on preventing the electric wall cover 40 to with blowdown valve gap 50 threaded connection prevent on the electric wall cover 40, can avoid personnel's maloperation, make the mode of blowdown valve gap 50 installation at preventing the electric wall cover 40 satisfy the requirement of CCC relevant forceful electric power equipment. Specifically, the adjusting block 404 is arranged on the electricity-proof wall cover 40 at the position corresponding to the threaded post 57 on the sewage valve cover 50, and the adjusting block 404 can also enable the electricity-proof wall cover 40 at the position corresponding to the threaded post 57 on the sewage valve cover 50 to have higher structural strength, so that the sewage valve cover 50 can be reliably installed on the electricity-proof wall cover 40.

According to the water heater provided by the embodiment of the invention, the clamping part on the sewage valve cover 50 is clamped with the matching part on the electricity-proof wall cover 40, so that the plane of the sewage valve cover 50 and the plane of the electricity-proof wall cover 40 are in the same plane, and after the sewage valve cover 50 is clamped on the electricity-proof wall cover 40, the sewage valve cover 50 is tightly screwed on the electricity-proof wall cover 40, so that misoperation of personnel can be avoided. Specifically, the extension piece 52 passes through the clamping hole 47 from the pit 49, the third protrusion 53 on the extension piece 52 is abutted against the second protrusion 48 on the electricity-proof wall cover, so that the long edge of the sewage valve cover 50 is clamped with the electricity-proof wall cover 40, the first protrusion 51 arranged on the sewage valve cover 50 is clamped into the first bayonet 45 and abutted against the clamping rib 46, and the short edge of the sewage valve cover 50 is clamped with the electricity-proof wall cover 40.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims (10)

1. A water heater is characterized by comprising a shell, an inner container, a blow-down valve, an electricity-proof wall cover and a blow-down valve cover;

the inner bag sets up in the shell, be provided with on the inner bag the blowoff valve, the shell corresponds the position of blowoff valve is provided with prevent electric wall cover, prevent electric wall cover go up just to be provided with the handle hole to the position of blowoff valve, prevent being provided with cooperation portion on the electric wall cover, be provided with joint portion on the blowdown valve gap, the blowdown valve gap pass through joint portion with prevent on the electric wall cover cooperation portion joint and closing cap the handle hole.

2. The water heater of claim 1, wherein a sinking platform sinking towards the inner side of the electricity-proof wall cover is arranged at a position corresponding to the sewage valve cover, and the sinking platform is provided with the operation hole and is provided with the sewage valve cover.

3. The water heater of claim 2, wherein the mating portion includes a first bayonet socket disposed on the sink deck, and the snap-fit portion includes a first protrusion disposed on the drain valve cover, the first protrusion snapping into the first bayonet socket.

4. The water heater of claim 3, wherein a side of the counter sink facing the housing is provided with a locking rib located outside the first bayonet and abutting against the first protrusion.

5. The water heater of claim 3, wherein the engaging portion comprises a snap-fit hole provided on the counter sink, and a second protrusion provided on a side of the electricity-proof wall cover facing the housing, the second protrusion being located on a side of the snap-fit hole facing away from the first bayonet;

the clamping portion comprises an extending piece and a third protrusion, the extending piece is arranged on the sewage discharge valve cover, the third protrusion is arranged on the extending piece, the extending piece penetrates through the clamping hole, and the second protrusion is clamped with the third protrusion.

6. The water heater according to claim 1, wherein a magnet is arranged on the sewage valve cover, a microswitch connected with a control circuit for controlling the power-off and the power-on of the whole machine is arranged on the electricity-proof wall cover, and the magnet is far away from the microswitch to power off the whole machine.

7. The water heater according to claim 6, wherein a side of the blowdown valve cover facing the electricity-proof wall cover is provided with a first mounting frame, a side wall of the first mounting frame is provided with a fourth protrusion, and the magnet is mounted in the first mounting frame through the fourth protrusion.

8. The water heater of claim 6, wherein a second mounting frame is arranged on the side of the electricity-proof wall cover, which faces away from the sewage valve cover, a fifth bulge is arranged in the side wall of the second mounting frame, and the micro switch is mounted in the second mounting frame through the fifth bulge.

9. The water heater of claim 8, wherein an adjusting block for adjusting the installation height of the second mounting frame is arranged on the side of the electricity-proof wall cover, which is far away from the sewage valve cover.

10. The water heater according to any one of claims 1-9, wherein the blowdown valve cover is provided with a threaded post, and the blowdown valve cover is threadedly connected to the electricity-proof wall cover through the threaded post.

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