WATER HEATING DEVICE

Abstract

A water heating device includes a first heating cavity and at least one second heating cavity provided side by side. A lower end of the first heating cavity and a lower end of each second heating cavity are respectively provided with a heater axially. A first connector connected to a water inlet pipe is arranged at an upper end of the first heating cavity, and is connected to an adjacent second connector through a bypass pipe. A second connector is arranged at an upper end of each second heating cavity, and adjacent second heating cavities are connected through the second connector. The lower end of the first heating cavity is connected to each second heating cavity through a communicating pipe. The second connector on a last second heating cavity along a water flow direction is communicated with a water outlet pipe.

Description

TECHNICAL FIELD

This application relates to instantaneous water heaters, and more particularly to a water heating device.

BACKGROUND

Water heater is a commonly-used household electrical appliance, among which an instantaneous water heater is widely popularized since it can offer the instant access to hot water. The instantaneous water heater generally has a high heating efficiency. The water is generally kept in a flowing state in the water heater, so that the water output from the water outlet pipe is not prone to be overheated in the case that the water supply is not cut off. If the water supply is cut off during use of the instantaneous water heater, after the water supply is restored, the output water will be overheated, which may scald the users. In addition, for most of the existing water heaters, the water is output from an upper end rather than a top of the water heater, and in this case, the hot water and gas at the top of the heating cavity cannot be completely discharged, resulting in risks of local overheating and dry burning.

SUMMARY

The present disclosure provides a water heating device to solve the problems of overheating caused by cut-off of water supply, local overheating and dry burning in the prior art.

In order to achieve the above objectives, the following technical solutions are adopted.

This application provides a water heating device, comprising:

• • a first heating cavity; and
  • at least one second heating cavity;
  • wherein the at least one second heating cavity is provided side by side at a side of the first heating cavity; a lower end of the first heating cavity and a lower end of each second heating cavity are each axially and insertedly provided with a heater; an upper end of the first heating cavity is provided with a first connector configured to allow water to pass through; an end of the first connector is connected to a water inlet pipe; an upper end of each second heating cavity is provided with a second connector configured to allow water to pass through; the first connector is connected to the second connector of one of the at least one second heating cavity adjacent to the first connector through a bypass pipe; the at least one second heating cavity is connected in sequence through the second connector; the lower end of the first heating cavity is communicated with each second heating cavity through a communicating pipe provided on a side of the lower end of the first heating cavity; the second connector on a last one of the at least one second heating cavity along a water flow direction is communicated with a water outlet pipe; water is output from a top of the water heating device, avoiding local overheating and dry burning on the at least one second heating cavity; the bypass pipe is configured to allow part of cold water to flow into heated hot water, which reduces closed temperature rise and prevents users from scalding; and the bypass pipe is also configured to discharge gas from the first heating cavity, avoiding local overheating and dry burning on the first heating cavity.

In some embodiments, the heater comprises a mounting base and a heating pipe; the mounting base is configured to be axially inserted into the first heating cavity or a corresponding one of the at least one second heating cavity; and the mounting base is connected to the heating pipe.

In some embodiments, a side of the mounting base is provided with a pipe joint extending tangentially along a circumference of the mounting base; and the pipe joint is communicated with the communicating pipe; in this way, the water tangentially flows into each second heating cavity, so that the water in each second heating cavity is in swirl flow, which can reduce limescale production and prolong service life of the water heating device.

In some embodiments, the mounting base is connected to the lower end of the first heating cavity or the lower end of the corresponding one of the at least one second heating cavity through a screw arranged axially; an outer circumference of the mounting base is sleevedly provided with a sealing ring; and the sealing ring is configured to be in contact with an inner wall of the first heating cavity or an inner wall of the corresponding one of the at least one second heating cavity, which has good sealing effects and is convenient for disassembly and assembly on the mounting base.

In some embodiments, a bore diameter of the bypass pipe is smaller than a bore diameter of the first connector and a bore diameter of each second connector; the bore diameter of the bypass pipe is smaller than a half of a bore diameter of the communicating pipe; and the first connector, the second connector and the communicating pipe are configured to fit each other in bore diameter; in this way, water flow through the bypass pipe is less than water flow in and out of the first heating cavity or each second heating cavity.

In some embodiments, both the water inlet pipe and the water outlet pipe are configured to extend in a direction toward the lower end of the first heating cavity, which is convenient for mounting.

Compared to the prior art, this application has the following beneficial effects.

The water heating device provided herein adopts a connected multi-heating cavity structure, and the number of second heating cavities can be adjusted according to the actual needs. The water heating device provided herein is designed such that the water is input at an upper end of the water heating device, and is output from the bypass pipe and the top of the water heating device, thereby avoiding local overheating and dry burning in the first heating cavity and each second heating cavity. The input cold water can be partially transported to the heated water through the bypass pipe, which reduces the closed temperature rise and prevents the users from being scalded. The heater provided herein has good sealing effects. In addition, the water in the first heating cavity and each second heating cavity is in the swirl flow, which can accelerate the flow and reduce the limescale production.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a water heating device according to Embodiment I of the present disclosure.

FIG. 2 is a sectional view of the water heating device according to Embodiment I of the present disclosure.

FIG. 3 is a bottom view of the water heating device according to Embodiment I of the present disclosure.

FIG. 4 is a partial sectional view of the water heating device in FIG. 3 along an A-A line.

FIG. 5 is a front view of the water heating device according to Embodiment II of the present disclosure.

FIG. 6 is a sectional view of the water heating device according to Embodiment II of the present disclosure.

FIG. 7 is a sectional view of the water heating device in FIG. 5 along a B-B line.

FIG. 8 is a front view of the water heating device according to Embodiment III of the present disclosure.

FIG. 9 is a sectional view of the water heating device according to Embodiment III of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

Technical solutions of embodiments of the present disclosure will be clearly and completely described with reference to the accompanying drawings. It is obvious that described herein are only some embodiments of the present disclosure, rather than all embodiments.

Referring to FIGS. 1-9, a water heating device is provided, including a first heating cavity 1 and at least one second heating cavity 2. The at least one second heating cavity 2 is provided side by side at a side of the first heating cavity 1. A lower end of the first heating cavity 1 and a lower end of each second heating cavity 2 are each axially and insertedly provided with a heater 9. An upper end of the first heating cavity 1 is provided with a first connector 6 configured to allow water to pass through. An end of the first connector 6 is connected to a water inlet pipe 3. An upper end of each second heating cavity 2 is provided with a second connector 8 configured to allow water to pass through. The first connector 6 is connected to an adjacent second connector 8 through a bypass pipe 7. The at least one second heating cavity 2 is connected in sequence through the second connector 8. The lower end of the first heating cavity 1 is communicated with each second heating cavity 2 through a communicating pipe 5 provided on a side of the lower end of the first heating cavity 1. The second connector 8 on a last one of the at least one second heating cavity 2 along a water flow direction is communicated with a water outlet pipe 4. Water is input at an upper end of the water heating device and is output from a top of the water heating device, avoiding local overheating and dry burning on the first heating cavity 1 and each second heating cavity 2. The bypass pipe is configured to allow part of cold water to flow into heated hot water, which reduces closed temperature rise and prevents users from scalding.

In some embodiments, a series structure is formed between the first heating cavity 1 and an adjacent second heating cavity 2. A parallel structure is formed among a plurality of second heating cavities 2, and the water output from the first heating cavity 1 enters the plurality of second heating cavities 2 for heating, which has high heating efficiency. Both the first connector 6 and the second connector 8 are three-way connectors. Both the water inlet pipe 3 and the water outlet pipe 4 are configured to extend in a direction toward the lower end of the first heating cavity 1, which is convenient for mounting.

Referring to FIGS. 1-4, the first heating cavity 1 is in series connection with one second heating cavity 2. Referring to FIGS. 5-7, the first heating cavity 1 is in series connection with two parallel second heating cavities 2. Referring to FIGS. 8-9, the first heating cavity 1 is in series connection with three parallel second heating cavities 2.

In some embodiment, the bypass pipe 7 is configured to be a part of the first connector 6 and be inserted into the adjacent second connector 8 to achieve connection.

A bore diameter of the bypass pipe 7 is smaller than a bore diameter of the first connector 6 and a bore diameter of each second connector 8. The bore diameter of the bypass pipe 7 is smaller than a half of a bore diameter of the communicating pipe 5.

The first connector 6, the second connector 8 and the communicating pipe 5 are configured to fit each other in bore diameter, in this way, water flow through the bypass pipe 7 is less than water flow in and out of the first heating cavity 1 or each second heating cavity 2. During the input of water through the water inlet pipe 3, most of the water flows into the first heating cavity 1, and a small part of the water passes through the bypass pipe 7 and enters the twice-heated water in the adjacent second connector 8. In this way, the water, from the first heating cavity 1, passes through the communicating pipe 5 and enters the at least one second heating cavity 2. The twice-heated water passes through the second connector 8 and flows to the water outlet pipe 4 together with the water in the bypass pipe 7; or the twice-heated water passes through the second connector 8 and flows to the water outlet pipe 4 together with the water in the bypass pipe 7 and the water in another second connector 8.

In some embodiments, the heater 9 includes a mounting base 11 and a heating pipe 13. The mounting base 11 is configured to be axially inserted into the first heating cavity 1 or a corresponding one of the at least one second heating cavity 2. The mounting base 11 is connected to the heating pipe 13. The heating pipe 13 is connected to the mounting base 11 to form an integrated structure, and the heating pipe 13 together with the mounting base 11 are configured to be inserted into the first heating cavity 1 and the corresponding one of the at least one second heating cavity 2. In order to ensure a sealing performance, the mounting base 11 is connected to the lower end of the first heating cavity 1 or the lower end of the corresponding one of the at least one second heating cavity 2 through a screw 12 arranged axially. An outer circumference of the mounting base 11 is sleevedly provided with a sealing ring 10, and the sealing ring 10 is configured to be in contact with an inner wall of the first heating cavity 1 or an inner wall of the corresponding one of the at least one second heating cavity 2, which has good sealing effects and is convenient for disassembly and assembly on the mounting base 11. The screw 12 is configured to be arranged on two sides of the mounting base 11 to press tightly and fix the mounting base 11. The sealing ring 10 is in O-type or other shapes, which has good overall sealing effect.

In some embodiments, referring to FIG. 7, a side of the mounting base 11 is provided with a pipe joint 14 extending tangentially along a circumference of the mounting base 11. The pipe joint 14 is communicated with the communicating pipe 5. In this way, the water tangentially flows into each second heating cavity 2, and water in each second heating cavity is in swirl flow, which can reduce limescale production and prolong service life of the water heating device.

It should be noted that the terms, such as “up”, “down”, “left”, “right”, “front”, “rear” and other directional indications used herein, are only used for illustrating relative position relationship and motion between components in a specific state (as shown in the accompanying drawings). If the specific state changes, the directional indication accordingly changes.

In addition, the terms “first” and “second” are only used for distinguishment rather than indicating or implying the relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with “first” or “second” may explicitly or implicitly indicates the inclusion of at least one of such features. In the description of this application, the term “a plurality of” means at least two, such as two and three, unless otherwise defined.

Unless otherwise specified, the terms “connection” and “fixing” should be understood in a broad sense, for example, it can be fixed connection, removable connection or integral connection; it may be mechanical connection or electric connection; it may be direct connection or indirect connection through an intermediate component; and it may be internal communication between two components or the interaction between two components. For those of ordinary skill in the art, the specific meanings can be determined according to the context.

In addition, technical solutions of individual embodiments of this application can be combined with each other as long as the combined solution can be implemented by those skilled in the art. When a combination of the technical solutions is contradictory or cannot be realized, it should be considered that such a combination does not exist, and is not within the scope of the present disclosure.

Claims

1. A water heating device, comprising: a first heating cavity; andat least one second heating cavity;wherein the at least one second heating cavity is provided side by side at a side of the first heating cavity; a lower end of the first heating cavity and a lower end of each of the at least one second heating cavity are each axially and insertedly provided with a heater; an upper end of the first heating cavity is provided with a first connector configured to allow water to pass through; an end of the first connector is connected to a water inlet pipe; an upper end of each of the at least one second heating cavity is provided with a second connector configured to allow water to pass through; the first connector is connected to the second connector of one of the at least one second heating cavity adjacent to the first connector through a bypass pipe; the lower end of the first heating cavity is communicated with each of the at least one second heating cavity through a communicating pipe provided on a side of the lower end of the first heating cavity; and the second connector on a last one of the at least one second heating cavity along a water flow direction is communicated with a water outlet pipe.

2. The water heating device of claim 1, wherein the number of the at least one second heating cavity is at least two; and for any adjacent two second heating cavities among at least two second heating cavities, the second connector of one of the adjacent two second heating cavities is insertedly connected with the second connector of the other of the adjacent two second heating cavities.

3. The water heating device of claim 1, wherein the heater comprises a mounting base and a heating pipe; the mounting base is configured to be axially inserted into the first heating cavity or a corresponding one of the at least one second heating cavity; and the mounting base is connected to the heating pipe.

4. The water heating device of claim 3, wherein a side of the mounting base is provided with a pipe joint extending tangentially along a circumference of the mounting base; and the pipe joint is communicated with the communicating pipe.

5. The water heating device of claim 3, wherein the mounting base is connected to the lower end of the first heating cavity or the lower end of the corresponding one of the at least one second heating cavity through a screw arranged axially; an outer circumference of the mounting base is sleevedly provided with a sealing ring; and the sealing ring is configured to be in contact with an inner wall of the first heating cavity or an inner wall of the corresponding one of the at least one second heating cavity.

6. The water heating device of claim 1, wherein a bore diameter of the bypass pipe is smaller than a bore diameter of the first connector and a bore diameter of each second connector.

7. The water heating device of claim 1, wherein both the water inlet pipe and the water outlet pipe are configured to extend in a direction toward the lower end of the first heating cavity.

8. The water heating device of claim 6, wherein the bore diameter of the bypass pipe is smaller than a half of a bore diameter of the communicating pipe; and the first connector, the second connector and the communicating pipe are configured to fit each other in bore diameter.