CN219656333U - Flash preventing device and water heater - Google Patents

Abstract

The utility model belongs to the technical field of water heaters, and discloses a flash preventing device and a water heater, wherein the flash preventing device comprises a first cylinder, one end of the first cylinder is provided with an end cover inwards, the other end of the first cylinder is provided with an annular flanging outwards, the end cover is provided with a through hole for a water pipe of the water heater to pass through, the annular flanging is provided with a second cylinder, the second cylinder is arranged outside the first cylinder at intervals, the second cylinder is provided with a mounting notch, and an elastic buckle is arranged in the mounting notch; the second barrel penetrates through the water gap of the water heater shell, the annular flanging is attached to the outer wall of the shell, and the elastic clamping hooks are clamped on the inner wall of the shell. The foaming material between the shell and the liner of the water heater can only enter the gap between the second cylinder and the first cylinder through the gap of the mounting notch, and cannot overflow to the outside of the water heater through the first cylinder or the annular flanging. The overflow preventing device can avoid overflow parts on the water heater shell and improve the installation stability of the overflow preventing device on the water heater shell.

Description

Flash preventing device and water heater

Technical Field

The utility model relates to the technical field of water heaters, in particular to a flash preventing device and a water heater.

Background

The water heater can be divided into four types of electric water heater, gas water heater, solar water heater and air energy water heater according to different principles. As shown in fig. 1, taking an electric water heater as an example, the electric water heater comprises a shell 1' and an inner container arranged in the shell 1', wherein the inner container is made of metal and is used for storing hot water, and the shell 1' is made of insulating materials so as to prevent electric shock accidents. Foaming materials are filled between the shell 1 'and the inner container, and the foaming materials can be filled between the inner container and the shell 1' when foaming, so as to keep the inner container warm. The shell 1' is provided with a water inlet for introducing cold water and a water outlet for discharging hot water, the water inlet is connected with a water inlet pipe, the water outlet is connected with a water outlet pipe, the water inlet pipe and the water outlet pipe extend into the inner container, the cold water is introduced into the inner container through the water inlet pipe for heating, and the hot water in the inner container is output for a user through the water outlet pipe.

In order to ensure the tightness of the positions of the water inlet and the water outlet, the positions of the water inlet and the water outlet are provided with a flash preventing device 2' (also called plastic sleeve). As shown in fig. 2, the conventional flash preventing device 2 'includes a mounting cylinder 21', one end of the mounting cylinder 21 'is provided with an annular blocking cover 22' inwards, an inner hole of the annular blocking cover 22 'is used for a water inlet pipe or a water outlet pipe to pass through, the other end of the mounting cylinder 21' is provided with a flange 23 'outwards, the mounting cylinder 21' is arranged at a water inlet or a water outlet in a penetrating manner, and the flange 23 'is abutted against the outer wall of a shell 1' of the water heater. The mounting cylinder 21' is provided with a plurality of openings 211' along the circumferential direction, each opening 211' is internally provided with a buckle 212', and in the process that the mounting cylinder 21' penetrates into the water inlet or the water outlet, the buckle 212' elastically deforms until the mounting cylinder 21' completely enters into the shell 1' and then recovers to deform, and hooks on the inner wall of the shell 1', so that the anti-overflow device 2' is mounted on the shell 1 '.

However, as shown in fig. 3, due to the opening 211' on the mounting cylinder 21', a gap exists between the side wall of the opening 211' and the fastener 212', and foam between the liner and the outer shell 1' still overflows through the gap when foaming, so that the overflow of the water inlet and the water outlet is serious.

Disclosure of Invention

The utility model aims to provide a flash preventing device and a water heater, which can avoid flash parts on a water heater shell and improve the installation stability of the flash preventing device on the water heater shell.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in a first aspect, a flash preventing device is provided, which comprises a first cylinder, wherein one end of the first cylinder is inwards provided with an end cover in a ring, the other end of the first cylinder is outwards provided with an annular flanging, the end cover is provided with a through hole for a water pipe of a water heater to pass through, the annular flanging is provided with a second cylinder, the second cylinder is surrounded outside the first cylinder at intervals, the second cylinder is provided with a mounting notch, and an elastic buckle is arranged in the mounting notch;

the second cylinder penetrates through the water gap of the water heater shell, the annular flanging is attached to the outer wall of the shell, and the elastic clamping hooks are clamped on the inner wall of the shell.

As the preferable scheme of the anti-overflow device provided by the utility model, one side of the second cylinder body, which is far away from the annular flanging, is convexly provided with the convex edge, the convex edge is convexly arranged in the direction far away from the annular flanging, and the mounting notch is arranged on the convex edge.

As the preferable scheme of the anti-flash device provided by the utility model, the elastic buckle comprises a cantilever and a back-off hook which are connected, the mounting notch comprises a first inner wall opposite to the annular flanging, the cantilever is connected to the first inner wall, the back-off hook is outwards protruded relative to the outer wall of the second cylinder, and the back-off hook is clamped on the inner wall of the shell.

As the preferable scheme of the anti-overflow device provided by the utility model, the mounting notch further comprises two second inner walls which are oppositely arranged, the second inner walls are connected with the first inner walls, and the back-off hooks incline towards one of the second inner walls.

As the preferable scheme of the anti-overflow device provided by the utility model, the thickness of the back-off clamping hook gradually increases from the cantilever to the annular flanging and is in smooth transition;

and/or the back-off hook faces one side of the annular flanging to a back-off contact surface, and the back-off contact surface is attached to the outer wall of the shell.

As the preferable scheme of the anti-flash device provided by the utility model, one side of the second cylinder body, which is far away from the annular flanging, is provided with the guide structure, and the guide structure extends towards the direction far away from the annular flanging and inclines towards the first cylinder body.

As the preferable scheme of the anti-overflow device provided by the utility model, the port ring is annularly arranged at the perforation, the port ring is convexly arranged at one side of the end cover, which is opposite to the annular flanging, and the port ring is configured to be used for penetrating a water pipe of the water heater.

As the preferable scheme of the anti-flash device provided by the utility model, one side of the annular flanging, which is away from the shell, is provided with an indication structure, and the indication structure is used for indicating the installation position of the anti-flash device.

As the preferable scheme of the anti-overflow device provided by the utility model, the second cylinder body is provided with a plurality of mounting notches, and at least one elastic buckle is arranged in each mounting notch.

In a second aspect, a water heater is provided, including a liner, a housing, a water pipe and a flash preventing device as described above, wherein the liner is disposed in the housing, the flash preventing device is disposed at a water gap of the housing, and the water pipe penetrates through the flash preventing device and extends into the liner.

The utility model has the beneficial effects that:

the utility model provides a flash preventing device and a water heater, wherein when the flash preventing device is arranged on a water heater shell, a second cylinder body of the flash preventing device is arranged in a water gap on the water heater shell in a penetrating way, an elastic buckle is extruded by the inner wall of the water gap to generate elastic deformation during the process, after the elastic buckle completely enters the shell, the elastic buckle is restored to the original state, at the moment, an annular flanging is abutted against the outer wall of the water heater shell, and an elastic buckle hook is clamped on the inner wall of the shell, so that the flash preventing device is firmly connected on the water heater shell. Because the second barrel is arranged outside the first barrel in a surrounding way, and a gap exists between the second barrel and the first barrel, when the foaming material between the shell and the liner of the water heater foams, the foaming material can only enter the gap between the second barrel and the first barrel through the gap of the mounting gap, and cannot overflow to the outside of the water heater through the first barrel or the annular flanging. The overflow preventing device can avoid overflow parts on the water heater shell and improve the installation stability of the overflow preventing device on the water heater shell.

Drawings

FIG. 1 is a schematic view of a prior art water heater;

FIG. 2 is a schematic view of a prior art flash prevention device;

FIG. 3 is a schematic illustration of the attachment of a flash prevention device to a water heater housing according to the prior art;

FIG. 4 is a schematic view of a water heater according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a water heater housing according to an embodiment of the present utility model;

FIG. 6 is a first view of a flash prevention device provided in an embodiment of the present utility model;

FIG. 7 is a schematic illustration of the attachment of a flash prevention device to a water heater housing according to an embodiment of the present utility model;

FIG. 8 is a second view of a flash prevention device provided in an embodiment of the present utility model;

FIG. 9 is a third view of a flash prevention device provided in an embodiment of the present utility model;

fig. 10 is a fourth view of a flash prevention device provided in an embodiment of the present utility model.

In fig. 1 to 3:

1', a housing; 2', a flash prevention device;

21', a mounting cylinder; 22', an annular shield; 23', flanging;

211', openings; 212', snaps.

Fig. 4 to 10:

1. a first cylinder; 2. an end cap; 3. annular flanging; 4. a second cylinder;

21. perforating; 22. a port ring;

31. an indication structure;

41. a mounting notch; 42. an elastic buckle; 43. a convex edge; 44. a concave groove;

421. a cantilever; 422. a back-off hook;

411. a first inner wall; 412. a second inner wall;

4221. a guide edge; 4222. a backstop contact surface;

100. a housing; 200. a water inlet; 300. a water outlet; 400. a cold water pipe joint; 500. hot water pipe joint.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 4, the present embodiment provides a water heater, especially an electric water heater, which includes a liner, a housing 100, a water pipe, and a flash preventing device. The inner container is arranged in the shell 100 and used for storing hot water, the anti-overflow device is arranged at the water gap of the shell 100, and the water pipe penetrates through the anti-overflow device and stretches into the inner container.

Specifically, referring to fig. 5, a water inlet 200 for passing cold water and a water outlet 300 for discharging hot water are provided in a housing 100 of the water heater, and the water inlet is collectively referred to as the water inlet 200 and the water outlet 300. The overflow preventing devices are arranged at the water inlet 200 and the water outlet 300, the water inlet 200 is connected with the water inlet pipe, the water outlet 300 is connected with the water outlet pipe, the water inlet pipe and the water outlet pipe are collectively called as the water inlet pipe and the water outlet pipe, the water inlet pipe and the water outlet pipe penetrate through the corresponding overflow preventing devices and extend into the inner container, cold water is introduced into the inner container through the water inlet pipe for heating, and hot water in the inner container is output for a user through the water outlet pipe.

Fig. 6 is a schematic structural diagram of the flash preventing device according to the present embodiment. The anti-overflow device comprises a first barrel body 1, wherein an end cover 2 is arranged on one end of the first barrel body 1 towards the inner ring, and an annular flanging 3 is arranged on the other end of the first barrel body towards the outer ring. The end cap 2 is provided with perforations 21 for the passage of water pipes (inlet pipes or outlet pipes) of the water heater. The annular flanging 3 is provided with a second cylinder 4, the second cylinder 4 is arranged outside the first cylinder 1 at intervals, the second cylinder 4 is provided with a mounting notch 41, and an elastic buckle 42 is arranged in the mounting notch 41. Referring to fig. 7, the second cylinder 4 is inserted into a water inlet (water inlet 200 or water outlet 300) of the water heater housing 100, the annular flange 3 is abutted against the outer wall of the housing 100, and the elastic buckle 42 is hooked on the inner wall of the housing 100.

When the anti-flash device is installed on the water heater shell 100, the second cylinder 4 of the anti-flash device is arranged in the water gap on the water heater shell 100 in a penetrating way, the elastic buckle 42 is extruded by the inner wall of the water gap to generate elastic deformation during the extrusion, after the elastic buckle 42 completely enters the inside of the shell 100, the elastic buckle is restored to the original state, the annular flange 3 abuts against the outer wall of the water heater shell 100, and the elastic buckle 42 is hooked and clamped on the inner wall of the shell 100, so that the stable connection of the anti-flash device on the water heater shell 100 is realized. Because the second cylinder 4 is arranged outside the first cylinder 1 in a surrounding manner, and a gap exists between the second cylinder 4 and the first cylinder 1, when the foaming material between the water heater shell 100 and the inner container foams, the foaming material can only enter the gap between the second cylinder 4 and the first cylinder 1 through the gap of the mounting notch 41, and cannot overflow to the outside of the water heater through the first cylinder 1 or the annular flange 3. The overflow preventing device can avoid overflow parts on the water heater shell 100 and improve the installation stability of the overflow preventing device on the water heater shell 100.

Further, referring to fig. 4 and 7, the inside of the first cylinder 1 of the flash preventing device installed in the water inlet 200 is installed with a cold water pipe joint 400, one end of the cold water pipe joint 400 is connected with an external cold water pipe, and the other end is connected with a water inlet pipe which is connected to the inner container. The first cylinder 1 of the flash preventing device installed in the water outlet 300 is internally provided with a hot water pipe joint 500, one end of the hot water pipe joint 500 is connected with an external hot water pipe, and the other end is connected with a water outlet pipe which is communicated with the inner container.

Referring to fig. 6 and 8, a convex edge 43 is convexly arranged on one side of the second cylinder 4 away from the annular flange 3, the convex edge 43 is convexly arranged in a direction away from the annular flange 3, and the mounting notch 41 is arranged on the convex edge 43. The provision of the ledge 43 allows the second cylinder 4 to have a sufficient size to open the mounting notch 41 so that a resilient catch 42 of sufficient size can be arranged inside the mounting notch 41.

Optionally, a plurality of mounting notches 41 are provided on the second cylinder 4, and at least one elastic buckle 42 is provided in each mounting notch 41 to ensure the mounting stability of the flash preventing device on the water heater housing 100.

In this embodiment, referring to fig. 6 and 9, four protruding edges 43 are protruding on a side of the second cylinder 4 away from the annular flange 3, a mounting notch 41 is provided on each protruding edge 43, and an elastic buckle 42 is provided in each mounting notch 41. Moreover, the four elastic buckles 42 are uniformly distributed along the circumferential direction of the second cylinder 4, so that the annular flanging 3 is firmly attached to the water heater shell 100 at all positions along the circumferential direction.

Referring to fig. 6 and 8, a concave groove 44 is formed between two adjacent convex edges 43, and the convex edges 43 and the concave groove 44 are in smooth and circular arc transition, so that breakage caused by existence of stress concentration positions is avoided.

It will be appreciated that the gap between the second cylinder 4 and the first cylinder 1 should be such that the resilient catch 42 has a sufficient amount of deformation to enable the resilient catch 42 to pass smoothly through the water gap in the water heater housing 100.

In this embodiment, the whole anti-flash device is integrally formed, and the material is preferably PS plastic, which has higher strength and hardness than ABS plastic, and the stability after installation is ensured, so that the anti-flash device cannot easily fall off.

Referring to fig. 6 and 8, the elastic buckle 42 includes a cantilever 421 and an inverted hook 422 connected to each other, the mounting notch 41 includes a first inner wall 411 opposite to the annular flange 3, the cantilever 421 is connected to the first inner wall 411, the inverted hook 422 protrudes outwards relative to the outer wall of the second cylinder 4, and the inverted hook 422 is hooked on the inner wall of the housing 100. The existence of the cantilever 421 can enable the elastic buckle 42 to be elastically deformed easily, so that the elastic buckle 42 can be conveniently clamped with the inner wall of the shell 100. The back-off hook 422 is outwards protruded, and when the second cylinder 4 penetrates into the water gap, the inner wall of the water gap extrudes the outer side surface of the back-off hook 422, so that the cantilever 421 deforms towards the first cylinder 1.

With continued reference to fig. 6 and 8, the mounting notch 41 further includes two second inner walls 412 disposed opposite to each other, the second inner walls 412 are connected to the first inner walls 411, and the back-fastening hooks 422 are disposed obliquely toward one of the second inner walls 412. One side edge of the outer side surface of the back-off clamping hook 422 is a guide edge 4221, the guide edge 4221 is arranged at an obtuse angle with the edge of the cantilever 421, when an operator installs the anti-overflow device, the second cylinder 4 penetrates into the water inlet 200 or the water outlet 300, and the anti-overflow device is pressed while rotating, so that the inner wall of the water inlet 200 or the water outlet 300 is in sliding fit with the guide edge 4221 until the back-off clamping hook 422 completely stretches into the shell 100, and the anti-overflow device is installed by rotating and pressing, so that the device is more convenient and labor-saving, the labor intensity of the operator on a production line is reduced, and the production efficiency is improved.

Referring to fig. 6 and 7, the thickness of the back-off hook 422 (i.e., the dimension of the back-off hook 422 in the radial direction of the first cylinder 1) gradually increases and smoothly transits from the cantilever 421 to the annular flange 3, so that the back-off hook 422 has sufficient strength. Referring to fig. 7 and 8, the back-off hook 422 faces the back-off contact surface 4222 on the side of the annular flange 3, and the back-off contact surface 4222 is attached to the outer wall of the housing 100. After the flash preventing device is installed, the shell 100 of the water heater is clamped between the stop contact surface 4222 and the annular flange 3, and has a stop function to prevent the flash preventing device from being separated from the water gap outwards.

The outer diameter of the second cylinder 4 is matched with the inner diameter of the corresponding water inlet 200 or water outlet 300, the annular flanging 3 is well attached to the outer wall of the shell 100, and the function of preventing the foaming material between the shell 100 and the inner container from overflowing is achieved. The casing 100 is generally cylindrical, so that the side surface of the annular flange 3 attached to the outer wall of the casing 100 is not planar, and the mounting direction of the annular flange 3 should be ensured to be correct during mounting, so that the inner side surface of the annular flange 3 can be well attached to the outer wall of the casing 100.

Specifically, the side of the annular flange 3 facing away from the housing 100 is provided with an indicating structure 31, the indicating structure 31 being used for indicating the mounting orientation of the flash prevention device. For example, referring to fig. 10, the indication structure 31 is an indication triangle, two opposite sides of the annular flange 3 are respectively provided with an indication triangle, and after the installation of the flash preventing device is completed by rotating and pressing, the connecting line of the two indication triangles should be horizontal, and at this time, the inner side surface of the annular flange 3 is well attached to the outer wall of the housing 100. During initial installation, the connecting line of the two indication triangles is inclined relative to the horizontal line, and the inclination angle is 15 degrees in an exemplary manner, so that the back-off hook 422 can smoothly extend into the shell 100 after being pressed in a rotating manner to be clamped with the inner wall of the shell 100, and then the orientation of the anti-flash device is slightly adjusted, so that the connecting line of the two indication triangles is horizontal.

Optionally, a guiding structure is provided on the side of the second cylinder 4 remote from the annular flange 3, the guiding structure extending in a direction away from the annular flange 3 and being inclined towards the first cylinder 1. When the anti-overflow device is installed, the guide structure passes through the water gap before the second cylinder 4, so that the guide effect is achieved, and the second cylinder 4 is more convenient to penetrate.

Referring to fig. 6 and 7, a port ring 22 is arranged at the position of the through hole 21 in a surrounding manner, the port ring 22 is convexly arranged on one side of the end cover 2, which is opposite to the annular flanging 3, and the port ring 22 is used for penetrating a water pipe of the water heater. The inner diameter of the port ring 22 is matched with the outer diameter of a water pipe (a water inlet pipe or a water outlet pipe) of the water heater, and the port ring 22 ensures that the penetrating installation between the water pipe and the anti-overflow device is more stable.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The anti-overflow device is characterized by comprising a first barrel (1), wherein one end of the first barrel (1) is provided with an end cover (2) towards the inner ring, the other end of the first barrel is provided with an annular flanging (3) towards the outer ring, the end cover (2) is provided with a through hole (21) for a water pipe of a water heater to pass through, the annular flanging (3) is provided with a second barrel (4), the second barrel (4) is surrounded outside the first barrel (1) at intervals, the second barrel (4) is provided with a mounting notch (41), and an elastic buckle (42) is arranged in the mounting notch (41);

the second cylinder body (4) penetrates through a water gap of the water heater shell (100), the annular flanging (3) is attached to the outer wall of the shell (100), and the elastic buckle (42) is hooked on the inner wall of the shell (100).

2. The flash prevention device according to claim 1, wherein a protruding edge (43) is protruding on one side of the second cylinder (4) away from the annular flange (3), the protruding edge (43) protruding in a direction away from the annular flange (3), and the mounting notch (41) is arranged on the protruding edge (43).

3. The flash prevention device according to claim 1, wherein the elastic buckle (42) comprises a cantilever (421) and an inverted hook (422) which are connected, the mounting notch (41) comprises a first inner wall (411) opposite to the annular flanging (3), the cantilever (421) is connected to the first inner wall (411), the inverted hook (422) is outwards protruded relative to the outer wall of the second cylinder (4), and the inverted hook (422) is hooked on the inner wall of the shell (100).

4. A flash prevention device according to claim 3, wherein the mounting notch (41) further comprises two second inner walls (412) arranged opposite each other, the second inner walls (412) being connected to the first inner walls (411), the back-off hooks (422) being inclined towards one of the second inner walls (412).

5. A flash prevention device according to claim 3, wherein the thickness of the back-off hook (422) gradually increases and smoothly transitions from the cantilever (421) to the annular flange (3);

and/or, the back-off hook (422) faces to one side of the annular flanging (3) to a back-off contact surface (4222), and the back-off contact surface (4222) is attached to the outer wall of the shell (100).

6. A flash prevention device according to any one of claims 1-5, wherein the side of the second cylinder (4) remote from the annular rim (3) is provided with a guiding structure extending in a direction remote from the annular rim (3) and inclined towards the first cylinder (1).

7. Flash prevention device according to any one of claims 1-5, wherein a port ring (22) is arranged around the perforation (21), the port ring (22) being arranged protruding from the side of the end cap (2) facing away from the annular rim (3), the port ring (22) being configured for threading through a water pipe of the water heater.

8. A flash prevention device according to any one of claims 1-5, wherein the side of the annular flange (3) facing away from the housing (100) is provided with an indication structure (31), the indication structure (31) being adapted to indicate the mounting orientation of the flash prevention device.

9. Flash prevention device according to any one of claims 1-5, wherein a plurality of mounting indentations (41) are provided on the second cylinder (4), at least one elastic snap (42) being provided in each mounting indentation (41).

10. Water heater, characterized by comprising an inner container, a housing (100), a water pipe and a flash preventing device according to any one of claims 1-9, wherein the inner container is arranged in the housing (100), the flash preventing device is arranged at a water gap of the housing (100), and the water pipe penetrates through the flash preventing device and stretches into the inner container.