RU2526602C1 - Electric water heater - Google Patents

Abstract

FIELD: heating.

SUBSTANCE: electric water heater comprises an inner tank, which comprises a water storage chamber, and a coupling sleeve attached with one end to the inner tank and connected with the other end to the water supply unit serving for water supply to the water storage chamber and discharge of water from the water storage chamber. In this implementation the water is discharged more easily and conveniently from the storage chamber, the deposition of dirt in the inner tank is prevented and the maintenance of the water heater is facilitated, requiring discharge of water.

EFFECT: water heater has a higher heating efficiency and lifetime.

10 cl, 6 dwg

Description

Technical field

The present invention relates to water heaters, in particular to electric heaters.

State of the art

When using the internal tank of the electric heater is filled with water. Contamination is easily deposited on the walls of the inner tank, which is affected not only by the quality of the water, but also by the intensity of heating. Therefore, contaminated water from the inner tank must be removed regularly, and the tank must be cleaned regularly. In order to drain the remaining water from the inner tank or clean the inner tank, you usually need to remove the screw plug from the drain hole of the electric heater and disconnect the magnesium rod fixed in the inner tank using a special tool. It is difficult for the user to operate and clean the electric heater, since the above-mentioned procedure for draining water is laborious and complicated and should be performed by a specialist technician,

SUMMARY OF THE INVENTION

The present invention is intended to solve at least partial, at least one of the problems currently existing in this area.

The present invention is an electric water heater comprising an internal tank with a water storage chamber therein; a coupler connected at one end to the inner tank; and a water supply and discharge unit connected to the other end of the coupler for supplying water to the water storage chamber and draining water from it.

At the electric heater according to the invention, water is more easily and conveniently discharged from the water storage chamber using the capabilities of the water supply and discharge unit for supplying water to the water storage chamber and draining water from it. Thus, the deposition of contaminants in the inner tank is prevented, and the user can easily and conveniently drain the water from the water storage chamber without the participation of a technical specialist, without using any special tool and without removing the magnesium rod from the inner tank. Therefore, the electric heater according to the variants of the present invention has higher heating efficiency and service life, it is easy to operate and clean for the user, and water is more conveniently drained from the water storage chamber.

In some structural embodiments, the water supply and discharge unit comprises a drain pipe, one end of which passes through a coupler and protrudes into the water storage chamber; and a ball valve having a connecting pipe and a switch, the connecting pipe being connected at one end to a second end of the coupling and a second end to a switch. The second end of the drain pipe is inserted and fitted into the first end of the connecting pipe. So the user can more conveniently and easily drain the water from the water storage chamber without the use of any special tools.

The water supply and discharge unit may also comprise a clamp with a first clamping element and a second clamping element. The first clamping element covers the outer peripheral surface of the coupling sleeve near the flange of the coupling located at its lower end, and the second clamping element covers the outer peripheral surface of the coupling sleeve near the flange of the coupling tube located at its upper end. The joint of the flange of the coupling and the flange of the connecting tube is between the first clamping element and the second clamping element. Thus, the coupler and the connecting tube can be more firmly bonded to each other.

In some embodiments, the water supply and discharge unit also comprises an o-ring, and a sealing groove is provided on the outer peripheral surface of the coupler near its flange. The sealing ring is placed in the sealing groove and fitted to the inner wall of the connecting tube by interference fit. Since the o-ring is located between the coupling and the connecting pipe, the ball valve and the coupling are connected more tightly, which reduces the risk of water leakage and increases the service life of the electric heater.

In some embodiments, there is a flange at the lower end of the drain tube on the outer peripheral surface, there is a bulge on the inner surface of the wall of the connecting tube, and the drain tube flange abuts the bulge. So the ball valve and the drain pipe are more conveniently located during installation due to the interaction of the drain pipe flange and thickening.

The water supply and discharge unit may also comprise a gasket between the flange of the drain pipe and the bulge. Thus, the ball valve and the drain pipe are connected more tightly, and the risk of water leakage is further reduced and the service life of the electric heater is increased.

In some structural embodiments, the external thread of the drain pipe is made on the outer peripheral surface of its flange, and the corresponding thread is made on the inner wall at the upper end of the connecting pipe. This makes it easier and more convenient to connect the ball valve and the drain pipe, speeds up the assembly of the water supply and discharge unit, and the ball valve can be more easily and conveniently removed from the drain pipe.

In some structural embodiments, a thread is made on the outer peripheral surface of the coupler, the diameter of which is equal to the diameter of the outer thread of the drain pipe, and the corresponding thread and interacting with it are made on the inner wall of the connecting pipe. Thus, the ball valve, drain pipe and coupler can be easily and conveniently connected to each other, which speeds up the assembly of the water supply and discharge unit, and the ball valve can be more easily and conveniently disconnected from the drain pipe and coupler.

In some structural embodiments, one end of the drain pipe is closed, and several separate drain holes are made near its upper end on the peripheral wall, while the level of the bottom surface of the water storage chamber falls between the upper and lower points of the drain hole. Thus, not only the hot water in the water storage chamber can be protected from the direct flow of cold water, but also the water from the water storage chamber can be drained completely.

In various embodiments, the ball valve may be a three-way or two-way.

A brief summary of the present invention is not intended to describe each possible structural variant or each variant of its implementation. Drawings and a detailed description with detailed design options are presented below.

Brief Description of the Drawings

Figure 1 is a schematic exploded view of an electric heater according to a first embodiment of the invention;

figure 2 schematically shows a cross section of the electric heater shown in figure 1;

Figure 3 is an enlarged schematic illustration of a portion A of the electric heater shown in Figure 2;

4 is a schematic exploded view of an electric heater according to a second embodiment of the present invention;

Figure 5 shows a cross section of the electric heater shown in Figure 4;

FIG. 6 is an enlarged schematic illustration of a portion B of the electric heater shown in FIG.

Parts List:

electric water heater 100; inner tank 10; water storage chamber 11; coupling 20; coupling flange 21; sealing groove 22; the external thread of the coupling 23; node supply and discharge of water 30; drain pipe 31; drain hole 311; flange of the drain pipe 312; external thread of the drain pipe 313; ball valve 32; connecting tube 321; switch 322; thickening 323; connecting pipe flange 324; clamp 40; a first clamping member 41; second clamping member 42; o-ring 50; sealing gasket 60.

DETAILED DESCRIPTION OF THE INVENTION

Details of the invention will be disclosed in the description of structural options. The described structural options with reference to the drawings are illustrative, explanatory and are used for a general understanding of the invention. They should not be construed as limiting the invention. The same or similar elements and elements having the same or the same functions are denoted by the same numeric positions throughout the description.

The electric heater 100 according to the structural variants of the present invention will be described below with reference to Fig.1-6. As shown in FIGS. 1-6, the electric heater 100 includes an internal tank 10, a coupler 20, and a water supply and discharge unit 30.

In the inner tank 10 there is a water storage chamber 11. The coupling 20 has a first end and a second end. The first end of the coupler 20 is connected to the inner tank 10. The water supply and discharge unit 30 is connected to the coupler 20 and serves to supply water to the water storage chamber 11 and to discharge water from it.

At the electric heater 100 according to the variants of the present invention, water is more conveniently and easily supplied to the water storage chamber 11 and drained from it using the water supply and discharge unit 30. In other words, the water supply and discharge unit 30 performs the function of supplying water to the water storage chamber 11 and the function of draining water from the water storage chamber 11. This prevents the deposition of contaminants in the inner tank 10, and the user can conveniently and easily drain the water from the water storage chamber 11 without using a special tool and the involvement of a technician and without removing the magnesium rod from the inner tank 10. Therefore, the electric heater 100 has a high heating efficiency and long service life, and is also easy to operate and clean by the user, and water is more conveniently drained from the water storage chamber 11 when it is necessary to clean the inner tank 10.

In the non-limiting examples of FIGS. 1-6, the first end of the coupler 20 may be referred to as the upper end of the coupler 20, and the second end of the coupler 20 may be referred to as the lower end of the coupler 20. As can be seen from FIG. 1- 6, the upper and lower directions are shown by arrow A. The first end of the coupler 20 is fixed to the inner tank 10, for example, it can be welded into the inner tank 10. It is desirable that the first end of the coupler 20 is screwed into the water drain hole made in the bottom of the inner tank 10 and connected to the water storage chamber 11. Thus, the coupling 20 can be more conveniently and easily mounted on the inner tank 10.

As shown in FIGS. 1-6, in some embodiments, the water supply and discharge unit 30 includes a drain pipe 31 and a ball valve 32. The drain pipe 31 has a first (upper) and second end. The first end of the drain pipe 31 passes through a coupler 20 and protrudes into the water storage chamber 11. The ball valve 32 has a connecting pipe 321 and a switch 322. The connecting pipe 321 is connected at its one end to the lower end of the coupling 20, and the second end is connected to the switch 322. The lower end of the drain pipe 31 is inserted and fitted to the upper end of the connecting pipe 321. Thus , the user can conveniently and easily drain the water from the water storage chamber 11 without using any special tool.

In non-limiting examples, in FIGS. 1-6, the first end of the drain pipe 31 refers to its upper end, and the second end of the drain pipe 31 refers to its lower end. The switch 322 is located in the middle of the connecting tube 321 and is used to control the working and non-working modes of the connecting tube 321.

In some structural embodiments, as shown in FIGS. 3 and 6, the first end of the drain pipe is closed. Several separate drain holes 311 near the first end of the drain pipe 31 are formed in the peripheral wall of the drain pipe 31. The surface level of the bottom of the water storage chamber 11 falls between the upper and lower points of the drain hole 311.

Due to the fact that the first end of the drain pipe 31 is closed and several drain holes 311 are made in the peripheral wall of the drain pipe 31, water can more quickly enter the water storage chamber 11 from a water source (not shown), and hot water in the water storage chamber 11 may be protected from direct flow of cold water. Thus, the performance of the hot water heater 100 can be increased. Since the bottom surface level of the water storage chamber 11 falls between the upper and lower points of the drain hole 311, water from the water storage chamber 11 can be completely drained.

The ball valve 32 may be two-way, but a three-way ball valve 32 is more preferable. If the ball valve 32 is two-way, the water supply channel is also used to drain the water. So the design of the drain pipe 31 and the ball valve 32 are simplified, which reduces the cost of manufacturing the drain pipe 31 and the ball valve 32. When the water from the water storage chamber 11 needs to be drained, the user first turns the switch 322 on the ball valve 32 to the closed position and turns off the water supply, blocking the connection of the ball valve 32 with a water source, such as a water supply. Then, the user turns the switch 322 to the open position, and the water from the water storage chamber 11 is drained through the drain pipe 31. After the water is drained, the user closes the drain pipe 31, and then connects the ball valve 32 to the water source and turns on the water supply to the electric heater 100 .

If the ball valve 32 is three-way, then the water supply channel and the water discharge channel are independent of one another. When it is necessary to drain the water from the water storage chamber 11, the user turns the switch 322 on the ball valve 32 to the water discharge position, thereby closing the water supply channel and opening the water drain channel, and then the water from the water storage chamber 11 is drained through the water drain channel. After the water is drained, the user turns the switch 322 to the water supply position to open the water supply channel and close the water drain channel, after which the electric heater 100 can be used.

As shown in FIGS. 1 and 3, in some embodiments, the water supply and discharge unit 30 also includes a clip 40. The clip 40 has a first clamping element 41 and a second clamping element 42. The flange 21 of the coupling is molded on the outer peripheral surface of the coupling 20 its lower end. The flange 324 of the connecting pipe is molded at the upper end of the connecting pipe 321. The first clamping element 41 may cover the outer peripheral surface of the coupling 20 and the second clamping element 42 may cover the outer peripheral surface of the connecting pipe 321. The flange 21 of the coupling and the flange 324 of the connecting pipe abut one in the other and are located between the first clamping element 41 and the second clamping element 42. Thus, the coupling 20 and the connecting pipe 321 may be more e firmly fastened together.

It is desirable that both the first clamping member 41 and the second clamping member 42 are resilient. The first clamping member 41 may deform when it covers the outer peripheral surface of the coupler 20. The second clamping member 42 may be deformed when it covers the outer peripheral surface of the coupler 321. Both the first clamping member 41 and the second clamping member 42 may be arcuate. Thus, the first clamping member 41 can more firmly cover the outer peripheral surface of the coupler 20, and the second clamping member 42 can more firmly cover the outer peripheral surface of the coupler 321.

As shown in FIGS. 1 and 3, the water supply and discharge unit 30 also includes an o-ring 50. A sealing groove 22 is formed on the outer peripheral surface of the coupler 20 next to the coupler flange 21. O-ring 50 is tightened into the sealing groove 22. Since the O-ring 50 is located between the coupling 20 and the connecting pipe 321, this improves the quality of the seal between the ball valve 32 and the coupling 20, reduces the possibility of water leakage and increases the life of the electric heater 100.

In some structural embodiments, as shown in FIG. 3, a drain pipe flange 312 is formed on the outer peripheral surface of the drain pipe 31 near its lower end. A thickening 323 is made on the surface of the inner wall of the connecting pipe 321, and the flange of the drain pipe 312 abuts against the thickening 323. Thus, the ball valve 32 and the drain pipe 31 are more convenient to assemble by connecting the flange 312 of the drain pipe and a thickening 323.

As shown in FIG. 3, it is preferable that the water supply and discharge unit 30 comprises a sealing gasket 60. The sealing gasket 60 is positioned between the drain pipe flange 312 and the bulge 323, thereby improving the quality of the seal between the ball valve 32 and the coupling 20, reducing the possibility of leakage water and increasing the service life of the electric heater 100.

As shown in FIG. 3, the external thread 313 of the drain pipe is formed on the outer peripheral surface of the flange 312 of the drain pipe. The thread corresponding to the external thread 313 of the drain pipe is formed on the inner wall of the connecting pipe 321. Thus, the ball valve 32 and the drain pipe 31 can be connected more easily and conveniently, which simplifies the assembly of the water supply and discharge unit 30, and the ball valve 32 can be lighter and it is more convenient to disconnect from the drain pipe 31.

In some embodiments, as shown in FIG. 6, the external thread 23 of the coupler is formed on the outer peripheral surface of the coupler 20. The outer diameter of the external thread 23 of the coupler may be equal to the diameter of the external thread 313 of the drain pipe. The second internal thread corresponding to the external thread 23 of the coupling is made on the inner wall of the connecting pipe 321. Thus, the ball valve 32, the drain pipe 31 and the coupling 20 can be more conveniently and easily mounted together, simplifying the assembly of the water supply and discharge unit 30 and the ball valve 32 can be more easily and conveniently disconnected from the drain pipe 31 and the coupler 20.

Preferably, the first internal thread and the second internal thread are integral. Thus, the manufacturing cost of the electric heater 100 can be reduced without affecting the performance of the assembly.

The assembly process of the node 30 supply and discharge of water according to the invention will be described with reference to Fig.1-3.

As shown in FIGS. 1-3, the coupler 20 is connected to the water supply and discharge unit 30 by a clamp 40. First, the seal 60 is placed on the bulge 323 of the connecting pipe 321 of the ball valve 32 and interacts with the inner wall of the connecting pipe 321 by fitting tight fit. The lower end of the drain pipe 31 is inserted into the connecting pipe 321 of the ball valve 32. The external thread 313 of the drain pipe on the outer peripheral surface of the flange 312 of the drain pipe corresponds to the upper internal thread on the inner wall of the connecting pipe 321. Thus, the gasket 60 is tightly pressed against the thickening 323 of the flange 312 drain pipe 31.

Then, the sealing ring 50 is installed in the sealing groove 22 of the coupling 20 and the upper end of the drain pipe 31 passes through the coupling 20 and protrudes into the water storage chamber 11. So the drain holes 311 are in the chamber 11 of the water storage, and the level of the bottom surface of the chamber 11 of the water storage falls between the highest point of the drain hole 311 and the lowest point of the drain hole 311.

Finally, the first clamping member 41 of the clamp 40 covers the outer peripheral surface of the connector 20, the second clamping member 42 of the clamp 40 covers the outer peripheral surface of the connector 321, and the joint of the coupling flange 21 and the connecting pipe flange 324 is between the first clamping member 41 and the second clamping element 42. On this assembly node 30 supply and discharge of water is soaked.

The assembly process of the water supply and discharge unit 30 according to another embodiment of the present invention will be described with reference to FIGS. 4-6.

As shown in FIGS. 4-6, the coupler 20 is connected to a thread supply and discharge unit 30.

First, the gasket 60 is placed on the bulge 323 of the connecting pipe 321 of the ball valve 32. Then, the sealing ring 50 is installed on the outer peripheral surface of the drain pipe 31. The external thread 313 of the drain pipe at the second end of the drain pipe 31 is connected to the first internal thread of the connecting pipe 321 of the ball valve 32 Thus, the gasket 60 is pressed firmly against the bulge 323 by the flange 312 of the drain pipe on the drain pipe 31.

Then, the upper end of the drain pipe 31 passes through the coupler 20 and protrudes into the water storage chamber 11. Thus, the drain hole 311 is located in the water storage chamber 11, the bottom surface level of the water storage chamber 11 falls between the upper point of the drain hole 311 and the lower point of the drain hole 311, and the second internal thread of the ball valve 32 corresponds to the external thread 23 of the coupling 20. this assembly node 30 supply and discharge of water ends.

In the description, unless expressly stated otherwise, the relative terms are “central”, “longitudinal”, “transverse”, “front”, “rear”, “right”, “left”, “internal”, “external”, “lower” , “Top”, “horizontal”, “vertical”, “above”, “under”, “top”, “bottom”, as well as derivatives from them (for example, “horizontally”, “down”, “up” and t .d.) should be understood as referring to orientation only when demonstrated on drawings and explanations thereof. Relative terms are given for convenience of description and do not require the proposed device to be designed or to work in that orientation.

In addition, the terms “first” and “second” as used herein do not imply an indication of the relative importance or significance of the features. So the names of the elements “first” and “second” mean that more than one of the same elements can be contained. In the present description, the term “several” means “two or more”, unless otherwise specified.

Unless expressly agreed otherwise, the terms “installed”, “connected”, “connected”, as well as their derivatives are used in a broad sense and mean both direct and indirect connections, supports, connections. So the concepts of “connected” and “connected” are not limited to physical or mechanical connections or bonds.

In the description of the present invention, unless otherwise specified, an indication that the first element is "on" the second element may include an option in which the first element is in direct contact with the second element, and may also include another option, in which between the first and second elements may contain an additional element, so that the first element does not contact directly with the second element. Moreover, the first element “on” “on top” or “on top” of the second element may mean that the first element is directly “on” “on” or “on top” of the second element, and may mean that the first element is not directly on "" on top "or" on top "of the second element, or only mean that the first element is located above the second element. Likewise, an indication that the first element is “below” or “below” the second element may mean that the first element is directly “below” or “bottom” of the second element, and may mean that the first element is not directly “below” or "bottom" of the second element, or only mean that the first element is located below the second element.

The terms throughout the description "embodiment", "options for implementation", "one constructive option", "example", "separate example" or "some examples" mean that individual features, structures, materials or parameters given for an example or constructive option relate to at least one embodiment or example of the invention. Verbal expressions, such as “in some constructive variants”, “according to one of the constructive variants of the invention”, “in a constructive variant”, “example”, “separate example” or “some examples” in different places of the description do not necessarily mean a reference only to one specific example embodiment of the invention. Moreover, individual features, structures, materials or parameters may be combined in any suitable way in one or more design options or examples.

Although explanatory examples have been presented and described, one skilled in the art will appreciate that changes, variations and modifications may be present in constructive variations without departing from the spirit and meaning of the invention. All of them are included in the scope of the present invention.

Claims (10)

1. Electric heater, including:
an internal tank containing a water storage chamber;
a coupling connected at one end to the inner tank; and
a water supply and discharge unit connected to the second end of the coupler for supplying water to the water storage chamber and draining water from the water storage chamber. 2. The electric heater according to claim 1, characterized in that the node supply and discharge of water contains:
a drain pipe, the upper end of which passes through the connector and protrudes into the water storage chamber; and
a ball valve having a connecting pipe and a switch, with one end of the connecting pipe connected to the lower end of the coupling and a second end connected to the switch, while the lower end of the drain pipe is inserted and fitted to the first end of the connecting pipe. 3. An electric heater according to claim 2, characterized in that the water supply and discharge unit also comprises a clip with a first clamping element and a second clamping element, wherein
the coupling flange is molded on the outer peripheral surface of the coupling at its lower end, and the coupling flange is molded on the upper end of the coupling
the first clamping element covers the outer peripheral surface of the coupling sleeve, the second clamping element covers the outer peripheral surface of the coupling tube, wherein the coupling flange and the coupling tube flange abut one another and are located between the first clamping element and the second clamping element. 4. An electric heater according to claim 3, characterized in that the water supply and discharge unit also contains an o-ring located in the o-ring groove, which is formed on the peripheral surface of the coupler near its flange, the o-ring interacting with the interference with the inner wall of the connecting tube . 5. The electric heater according to claim 2, characterized in that the flange of the drain tube is located at its lower end on the outer peripheral surface, and a bulge adapted to the flange of the drain tube is located on the surface of the inner wall of the connecting tube, and the flange of the drain tube rests on the thickening. 6. A water heater according to claim 5, characterized in that the water supply and discharge unit also comprises a gasket installed between the flange of the drain pipe and the thickening. 7. The electric heater according to claim 5, characterized in that the external thread of the drain pipe is made on the peripheral surface of the flange of the drain pipe, and the corresponding internal thread is made on the inner wall of the connecting pipe. 8. The electric heater according to claim 7, characterized in that the external thread of the coupling is made on its outer peripheral surface, the external diameter of the external thread of the coupling is equal to the diameter of the external thread of the drain pipe, and the second internal thread corresponding to the external thread is made on the inner wall of the connecting tube. 9. The electric heater according to claim 2, characterized in that the upper end of the drain pipe is closed, and several separate drain holes are made near the closed end on the peripheral wall, and the level of the bottom surface of the water storage chamber falls between the upper and lower points of the drain hole. 10. An electric heater according to any one of claims 2 to 9, characterized in that the ball valve is a three-way or two-way valve.

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