A gas water heater

Abstract

The present application belongs to the technical field of water heater, and discloses a gas water heater, which comprises a metal shell, an air inlet valve located at one side of the metal shell, and an air inlet connector located at the other side of the metal shell, wherein the air inlet connector is connected to the air inlet valve through the metal shell, and the metal shell and the air inlet valve are insulated from the air inlet connector. According to the present application, the metal shell and the air inlet valve are both insulated from the air inlet connector, so that the passage formed by the air inlet connector connected gas pipe and the grounding wire is blocked, and the damage of the gas water heater caused by the abnormal electrification of the grounding wire is avoided, and the safety performance of the gas water heater is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to a gas water heater. BACKGROUND

[0002] As a component for providing hot water in family life, the gas water heater usually needs to have sufficient safety performance, that is, the whole gas water heater must be reliably grounded. In the existing gas water heater, the gas pipeline and the gas valve are usually directly connected through a metal joint, and the gas valve of the water heater is also a metal component, and the component is in equal potential conduction with the ground wire of the power line, and then when the ground wire of the user's home is abnormally charged, the ground wire forms a low-resistance connection between the gas valve and the gas pipeline, at this time, a very large current will pass through the ground wire of the power line and the gas pipeline, and the huge current will cause the metal conductor to heat seriously, and the result is that the power line is directly burned out, and even the wire harness and plastic components inside the water heater can be ignited, which seriously endangers the personal and property safety of consumers. SUMMARY

[0003] The purpose of the present application is to provide a gas water heater which can insulate and isolate the air inlet joint from the air inlet valve and the metal shell, thereby blocking the path formed by the ground wire and the gas pipeline, and avoiding damage to the gas water heater caused by abnormal charging of the ground wire, and improving the safety performance of the gas water heater.

[0004] To achieve this purpose, the present application adopts the following technical solutions:

[0005] A gas water heater comprises a metal shell, an air inlet valve located on one side of the metal shell, and an air inlet joint located on the other side of the metal shell, the air inlet joint passes through the metal shell and is connected to the air inlet valve, and the metal shell and the air inlet valve are insulated from the air inlet joint.

[0006] Preferably, an insulating plate is arranged between the metal shell and the air inlet joint, and between the air inlet valve and the air inlet joint.

[0007] Preferably, a sealing ring is arranged between the insulating plate and the air inlet valve.

[0008] Preferably, the insulating plate is in the form of a step, and the insulating plate comprises a first step and a second step, the metal shell is arranged on the first step, and the sealing ring is arranged between the second step and the air inlet valve.

[0009] Preferably, the air inlet valve, the metal shell and the air inlet joint are fixedly connected through an insulating screw.

[0010] Preferably, an insulating gasket is arranged between the nut of the insulating screw and the air inlet joint.

[0011] Preferably, the insulating board is injection molded from plastic material.

[0012] Preferably, the insulating plate circumferentially wraps around the air inlet connector.

[0013] Preferably, an alarm device is provided between the air intake connector and the metal housing, and the alarm device is configured to generate an alarm indication when the metal housing is energized.

[0014] And / or an alarm device is provided between the air intake connector and the air intake valve, the alarm device being configured to issue an alarm indication when the air intake valve is energized.

[0015] Preferably, the device also includes a control device connected to the alarm device for controlling the alarm device to issue an alarm indication.

[0016] The beneficial effects of this invention are:

[0017] By insulating the gas water heater with both the metal casing and the gas inlet valve, the path formed by the gas pipe connected to the gas inlet and the grounding wire can be blocked, thus preventing damage to the gas water heater caused by abnormal electrification of the grounding wire and improving the safety performance of the gas water heater.

[0018] By installing an alarm device, it can promptly detect whether the grounding wire or gas pipe is energized and issue an alarm, further improving the safety performance of the gas water heater. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly structure of the gas water heater's air inlet connector, metal casing, and air inlet valve provided by the present invention.

[0020] Figure 2 This is the present invention. Figure 1 AA sectional view.

[0021] In the picture:

[0022] 1. Metal casing; 2. Intake valve; 3. Intake connector; 4. Insulating plate; 41. First step; 42. Second step; 5. Sealing ring; 6. Insulating screw; 7. Insulating gasket. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0024] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "linked", "fixed" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0026] In the description of the present embodiment, the terms "upper", "lower", "right", and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0027] The present application provides a gas water heater which can block the path formed by the grounding wire and the gas pipe, thereby avoiding damage to the gas water heater caused by abnormal electrification of the grounding wire, and improving the safety performance of the gas water heater. Specifically, as shown in Figure 1 and Figure 2 The gas water heater comprises a metal shell 1, an air inlet valve 2 and an air inlet connector 3. The air inlet valve 2 is in conductive communication with the grounding wire of the power supply line of the gas water heater. The gas pipe is in communication with the air inlet valve 2 through the air inlet connector 3. The air inlet valve 2 and the air inlet connector 3 are separately arranged on the two sides of the metal shell 1. The air inlet connector 3 penetrates through the metal shell 1 and is connected to the air inlet valve 2. The metal shell 1 and the air inlet valve 2 are insulated from the air inlet connector 3.

[0028] In the present embodiment, a through hole is formed in the metal shell 1. The air inlet connector 3 is sealingly connected to the air inlet valve 2 after penetrating through the through hole. The metal shell 1, the air inlet valve 2 and the air inlet connector 3 are insulated by an insulating plate 4. Specifically, as shown in Figure 2As shown, the air inlet joint 3 is located at the inner side of the insulation plate 4 and is wrapped by the insulation plate 4, and the metal shell 1 and the air inlet valve 2 are located at the outer side of the insulation plate 4 and are insulated by the insulation plate 4. The insulation plate 4 can be stepped, and the insulation plate 4 includes a first step 41 and a second step 42. The air inlet joint 3 also has a stepped structure and can cooperate with the first step 41 and the second step 42 of the insulation plate 4 to support the insulation plate 4. The metal shell 1 is located on the first step 41 and is insulated from the air inlet joint 3 by the first step 41. The air inlet valve 2 is located on the metal shell 1, and the inner wall of the air inlet valve 2 and the outer wall of the air inlet joint 3 are separated by the second step 42 (including a horizontal part and a vertical part) of the insulation plate 4. Through the insulation plate 4, the metal shell 1 and the air inlet valve 2 can be insulated from the air inlet joint 3, and the insulation between the grounding wire and the gas pipe is also achieved, avoiding damage to the gas water heater caused by abnormal electrification of the grounding wire and improving the safety performance of the gas water heater.

[0029] Preferably, the insulation plate 4 can be injection molded from plastic material, which is low in cost and can effectively achieve insulation.

[0030] In the embodiment, a sealing ring 5 is arranged between the insulation plate 4 and the air inlet valve 2, and the sealing ring 5 is located between the inner wall of the air inlet valve 2 and the second step 42 of the insulation plate 4 to seal the connection between the air inlet joint 3 and the air inlet valve 2.

[0031] In the embodiment, as shown, Figure 2 The air inlet valve 2, the metal shell 1, and the air inlet joint 3 are fixedly connected by an insulating screw 6. Specifically, the insulating screw 6 can pass through the air inlet joint 3, the insulation plate 4, and the metal shell 1 in sequence and be threadedly connected with the air inlet valve 2. In the embodiment, preferably, an insulating gasket 7 can be arranged between the nut of the insulating screw 6 and the air inlet joint 3 to further ensure the insulation of the air inlet joint 3, the metal shell 1, and the air inlet valve 2.

[0032] In the embodiment, an alarm device can be arranged between the air inlet joint 3 and the metal shell 1. The alarm device is configured to alarm when the metal shell 1 is electrified. Specifically, the alarm device is connected to a control device of the gas water heater, and the control device alarms when it detects that the metal shell 1 is electrified. Specifically, the alarm device can be a neon bubble indicator lamp connected between the air inlet joint 3 and the metal shell 1. When the grounding wire or the gas pipe is electrified, the neon bubble indicator lamp is lit due to the existence of a potential difference, thereby achieving the purpose of alarming. It can be understood that the alarm device is not limited to the structure of the neon bubble indicator lamp, and it can also be a buzzer alarm.

[0033] It can be understood that the embodiment can also only be provided between the air inlet joint 3 and the air inlet valve 2, and the alarm device is configured to issue an alarm indication when the air inlet valve 2 is electrified. The structure and principle are the same as those of the alarm device provided between the air inlet joint 3 and the metal shell 1, and are not described again. The embodiment can also simultaneously provide the above-mentioned alarm device between the air inlet joint 3 and the metal shell 1 or between the air inlet joint 3 and the air inlet valve 2.

[0034] As a preferred, it also comprises a control device connected to the alarm device for controlling the alarm device to issue an alarm indication.

[0035] The above-mentioned gas water heater provided by the present application can block the path formed by the gas pipe connected to the air inlet joint 3 and the grounding wire by insulating the metal shell 1 and the air inlet valve 2 from the air inlet joint 3, thereby avoiding damage to the gas water heater caused by the abnormal electrification of the grounding wire and improving the safety performance of the gas water heater. Moreover, the alarm device can timely detect whether the grounding wire or the gas pipe is electrified and timely alarm, thereby further improving the safety performance of the gas water heater.

[0036] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A gas water heater, characterised in that, The metal shell (1), the air inlet valve (2) on one side of the metal shell (1), and the air inlet connector (3) on the other side of the metal shell (1), the air inlet connector (3) is connected to the air inlet valve (2) through the metal shell (1), and the metal shell (1) and the air inlet valve (2) are insulated from the air inlet connector (3); An insulating plate (4) is arranged between the metal shell (1) and the air inlet connector (3) and between the air inlet valve (2) and the air inlet connector (3); A sealing ring (5) is arranged between the insulating plate (4) and the air inlet valve (2); The insulating plate (4) is stepped, and the insulating plate (4) includes a first step (41) and a second step (42), the metal shell (1) is arranged on the first step (41), and the sealing ring (5) is arranged between the second step (42) and the air inlet valve (2); The insulating plate (4) is formed by plastic injection molding.

2. The gas water heater of claim 1, wherein, The air inlet valve (2), the metal shell (1), and the air inlet connector (3) are fixedly connected by an insulating screw (6).

3. The gas water heater of claim 2, wherein, An insulating gasket (7) is arranged between the nut of the insulating screw (6) and the air inlet connector (3).

4. The gas water heater of claim 1, wherein, The insulating plate (4) circumferentially wraps the air inlet connector (3).

5. The gas water heater according to any one of claims 1 to 4, wherein the gas water heater further comprises a gas valve, and the gas valve is configured to be operated by the controller. An alarm device is arranged between the air inlet connector (3) and the metal shell (1), and the alarm device is configured to alarm when the metal shell (1) is electrified; And / or an alarm device is arranged between the air inlet connector (3) and the air inlet valve (2), and the alarm device is configured to alarm when the air inlet valve (2) is electrified.

6. The gas water heater of claim 5, wherein, Further comprising a control device connected to the alarm device for controlling the alarm device to alarm.

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