Gas water heater capable of intuitively observing gas inlet condition

Abstract

The utility model relates to the technical field of gas water heaters, in particular to a gas water heater capable of intuitively observing gas inlet conditions, which comprises a water heater main body and a gas tank, a gas inlet pipe is arranged on the water heater main body, the gas tank is communicated with the gas inlet pipe through a pressure reducing valve, the gas water heater further comprises a leak detection device, the leak detection device is provided with an exhaust pipe, and the exhaust pipe is communicated with the gas inlet pipe. A cavity is formed in the leak detection device, the cavity is communicated with the exhaust pipe and filled with liquid, the leak detection device is provided with an air guide pipe, the input end of the air guide pipe is communicated with the pressure reducing valve, and the output end of the air guide pipe extends into the liquid; and the cavity wall of the cavity is made of a transparent material. The leak detection device is installed on the water heater body, the cavity is arranged in the leak detection device and filled with the liquid, the input end of the air guide pipe is communicated with the pressure reducing valve, the output end of the air guide pipe extends into the liquid, and the cavity wall of the cavity is made of the transparent material. A user can visually observe the bubble generation condition of the leakage detection device to judge whether the water heater has side leakage or not, and then the air inlet condition is judged.

Description

Technical Field

[0001] The utility model relates to the technical field of gas water heaters, in particular to a gas water heater that can intuitively show the gas inlet situation. Background Art

[0002] Generally, an electronic detector is installed inside the existing gas water heater. The electronic detector is used to detect the gas inlet situation and feedback it to the control unit. When gas leakage occurs, it will alarm to notify the user.

[0003] For example, a gas water heater and a gas stove with a gas leakage detection and emergency treatment device disclosed in the publication number CN114440264A consists of a pipeline part, a gas water heater, a gas stove and an intelligent controller. Attached Figure 1 are detectors and valves for the entire system pipeline part. When the gas stove and the water heater are in an unused and unburned state, valve C and valve A are closed. A closed space is formed to detect whether the gas pressure or the concentration of a certain component in the gas or air is within the set range. If it is not within the range, it indicates that the pipeline gas is leaking. If detectors A and B are not within the set range, then valve B is closed and the water heater leaks gas to alarm and notify the user. If detectors C and D are not within the set range, then valve D is closed and the gas stove leaks gas to alarm and notify the user. If detector E is not within the set range, then valve E is closed and the pipeline leaks gas to alarm and notify the user.

[0004] However, the gas water heaters as described above generally lack a device that can intuitively show the gas inlet situation. When the electronic detector or the control unit is damaged, people cannot know the gas inlet situation. And when gas leakage occurs, it is often impossible to recognize or prevent it in time, thus causing many irreparable consequences.

[0005] Therefore, there is an urgent need for a gas water heater that can allow users to intuitively know the gas inlet situation. Content of the Utility Model

[0006] To solve the above technical problems, the purpose of the utility model is to provide a gas water heater that can intuitively show the gas inlet situation.

[0007] The technical solution adopted by the utility model to solve the problem is:

[0008] A gas water heater capable of intuitively showing the gas inlet situation, including a water heater main body and a gas tank. An air inlet pipe is arranged on the water heater main body, and the gas tank is communicated with the air inlet pipe through a pressure reducing valve. The water heater further includes a leak detection device which is provided with an exhaust pipe communicated with the air inlet pipe. A cavity is arranged in the leak detection device and communicated with the exhaust pipe. The cavity is filled with a liquid. The leak detection device is provided with a gas guide pipe, the input end of the gas guide pipe is communicated with the pressure reducing valve, and the output end of the gas guide pipe extends into the liquid. The gas output by the gas tank sequentially passes through the pressure reducing valve, the gas guide pipe, the liquid and the water heater main body. The cavity wall of the cavity is made of a transparent material.

[0009] As a further improvement of the above technical solution, the leak detection device includes a cup body and an upper cover. The cavity is arranged in the cup body, and the gas guide pipe is arranged on the upper cover. The cup body and the upper cover are detachably connected.

[0010] As a further improvement of the above technical solution, a first connecting portion is arranged at the upper end of the cup body, an external thread is arranged on the first connecting portion, a second connecting portion is arranged at the lower end of the upper cover, and an internal thread is arranged on the second connecting portion. The external thread and the internal thread are screwed together.

[0011] As a further improvement of the above technical solution, a stepped surface is further arranged on the second connecting portion. The upper end of the first connecting portion abuts against the lower side of the stepped surface, and a sealing ring is pressed between the upper end of the first connecting portion and the stepped surface.

[0012] As a further improvement of the above technical solution, the gas guide pipe includes a first branch pipe and a second branch pipe which are communicated with each other. The gas sequentially passes through the first branch pipe and the second branch pipe. The diameter of the first branch pipe is larger than that of the second branch pipe.

[0013] As a further improvement of the above technical solution, the input end of the gas guide pipe is arranged at the left end of the first branch pipe. A through hole is arranged at the right end of the first branch pipe, and the second branch pipe is glued to the inner wall of the through hole.

[0014] As a further improvement of the above technical solution, an inclined surface is arranged at the right end of the first branch pipe, and the projection of the inclined surface in the vertical direction covers the through hole.

[0015] As a further improvement of the above technical solution, the liquid is synthetic engine oil.

[0016] As a further improvement of the above technical solution, the material of the cup body is PP.

[0017] As a further improvement of the above technical solution, the materials of the upper cover and the gas guide pipe are metal or plastic.

[0018] The beneficial effects of the present utility model are as follows: By installing a leak detection device on the main body of the water heater, a cavity is provided inside the leak detection device, the cavity is filled with liquid, the input end of the air duct is communicated with the pressure reducing valve, the output end of the air duct extends into the liquid, and the cavity wall of the cavity is made of a transparent material. Users can directly observe the generation of bubbles in the leak detection device to determine whether the water heater is leaking, and further determine the air intake situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present utility model will be further explained and illustrated below in conjunction with the drawings and specific embodiments.

[0020] Figure 1 It is a structural cross-sectional view of the leak detection device of the present utility model;

[0021] Figure 2 It is a working principle cross-sectional view of the leak detection device of the present utility model;

[0022] Figure 3 It is a structural exploded cross-sectional view of the leak detection device of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of the leak detection device of the present utility model;

[0024] Figure 5 It is a structural schematic diagram of the main body of the water heater and the leak detection device of the present utility model;

[0025] In the figure: 1 - main body of the water heater, 11 - air inlet pipe, 2 - leak detection device, 21 - upper cover, 211 - exhaust pipe, 212 - first branch pipe, 213 - through hole, 214 - inclined surface, 215 - second branch pipe, 216 - internal thread, 217 - step surface, 22 - cup body, 221 - external thread, 222 - cavity, 3 - sealing ring, 4 - liquid. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The role of the drawings is to supplement the description in the text part of the specification, enabling people to visually and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation on the present utility model.

[0028] In the description of the present utility model, unless otherwise clearly defined, terms such as "setting", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0029] Referring to Figures 1 to 5 , a gas water heater capable of intuitively showing the gas intake situation, includes a water heater main body 1 and a gas tank. An intake pipe 11 is provided at the lower end of the water heater main body 1. The gas tank is communicated with the intake pipe 11 through a pressure reducing valve. It further includes a leak detection device 2. An exhaust pipe 211 is provided at the upper end of the leak detection device 2. The exhaust pipe 211 is screwed on the outer periphery of the intake pipe 11 and is communicated with the intake pipe 11. A cavity 222 is provided in the leak detection device 2. The cavity 222 is communicated with the exhaust pipe 211. A liquid 4 (the liquid 4 does not chemically react with the gas) is filled in the cavity 222. The leak detection device 2 is provided with a gas guide pipe. The input end of the gas guide pipe is communicated with the pressure reducing valve, and the output end of the gas guide pipe extends into the liquid 4 (the output end of the gas guide pipe has a certain height of liquid column). The cavity wall of the cavity 222 is made of a transparent material.

[0030] Working principle: The gas output from the gas tank is reduced in pressure by the pressure reducing valve and then enters the gas guide pipe, and then enters the liquid 4 from the gas guide pipe. Bubbles are generated in the liquid 4, and the bubbles rise and enter the water heater main body 1 through the exhaust pipe 211 / intake pipe 11.

[0031] For the gas water heater of the present utility model, when starting the water heater, it is possible to judge the gas intake by observing whether bubbles are generated. When bubbles are generated, it proves normal gas intake; when closing the water heater, it is possible to judge the side leakage by observing whether bubbles are generated. When bubbles are generated, it proves that there is a gas side leakage phenomenon in the water heater. The setting of the leak detection device 2 can be used to prevent the occurrence of gas leakage events. Further, there is also a certain amount of liquid 4 at the end of the gas guide pipe. According to Pascal's law, when a small leak occurs in the water heater, the pressure caused is not sufficient to push the liquid 4 in the pipeline, and no bubbles can be generated, playing a certain protective role.

[0032] In a preferred embodiment, the leak detection device 2 includes a cup body 22 and an upper cover 21. The cavity 222 is provided in the cup body 22, and the gas guide pipe is provided on the upper cover 21; the cup body 22 and the upper cover 21 are detachably connected. It is convenient to replace or fill the liquid 4 in the cavity 222.

[0033] In a preferred embodiment, a first connecting portion is provided at the upper end of the cup body 22, an external thread 221 is provided on the first connecting portion, a second connecting portion is provided at the lower end of the upper cover 21, and an internal thread 216 is provided on the second connecting portion. The external thread 221 and the internal thread 216 are screwed together. The gas rises from bottom to top to the water heater main body 1. The connection surface between the cup body 22 and the upper cover 21 is arranged outside the cavity 222, reducing the risk of gas leakage from the connection surface between the cup body 22 and the upper cover 21, and improving the sealing performance of the leak detection device 2.

[0034] Further, in a preferred embodiment, a stepped surface 217 is further provided on the second connecting portion. The upper end of the first connecting portion abuts against the lower side of the stepped surface 217, and a sealing ring 3 is pressed between the upper end of the first connecting portion and the stepped surface 217. The sealing performance of the leak detection device 2 is further improved.

[0035] In a preferred embodiment, the gas guide pipe includes a first branch pipe 212 and a second branch pipe 215 that are interconnected. The gas passes through the first branch pipe 212 and the second branch pipe 215 in sequence. The diameter of the first branch pipe 212 is larger than the diameter of the second branch pipe 215. The gas enters from a large pipe diameter into a small pipe diameter, and the gas flow rate increases (Venturi effect). Furthermore, the gas flow rate in the second branch pipe 215 is increased, and the intake efficiency is improved.

[0036] In some embodiments, the input end of the gas guide pipe is arranged at the left end of the first branch pipe 212. A through hole 213 is provided at the right end of the first branch pipe 212, and the second branch pipe 215 is adhesively connected to the inner wall of the through hole 213.

[0037] In a preferred embodiment, an inclined surface 214 is provided at the right end of the first branch pipe 212. The projection of the inclined surface 214 in the vertical direction covers the through hole 213. The inclined surface 214 plays a guiding role, guiding the gas to the through hole 213 and improving the stability of gas intake.

[0038] In some embodiments, the liquid 4 is synthetic engine oil.

[0039] In some embodiments, the cup body 22 is made of PP.

[0040] In some embodiments, the upper cover 21 and the gas guide pipe are made of metal or black plastic.

[0041] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A gas water heater capable of visually displaying gas intake conditions, comprising a water heater body (1) and a gas tank, wherein the water heater body (1) is provided with an intake pipe (11), and the gas tank is connected to the intake pipe (11) via a pressure reducing valve, characterized in that: It also comprises a leak detection device (2), wherein the leak detection device (2) is provided with an exhaust pipe (211), and the exhaust pipe (211) is connected to the air intake pipe (11); The leak detection device (2) is provided with a cavity (222), the cavity (222) is in communication with the exhaust pipe (211), the cavity (222) is filled with liquid (4), the leak detection device (2) is provided with an air guide tube, the input end of the air guide tube is in communication with the pressure reducing valve, and the output end of the air guide tube extends into the liquid (4); The gas outputted from the gas tank passes through the pressure reducing valve, the gas guide pipe, the liquid (4) and the water heater body (1) in sequence; The cavity wall of the cavity (222) is made of transparent material.

2. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 1, characterized in that: The leak detection device (2) comprises a cup body (22) and an upper cover (21), the cavity (222) is arranged in the cup body (22), and the air guide tube is arranged on the upper cover (21); The cup body (22) and the upper cover (21) are detachably connected.

3. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 2, characterized in that: The upper end of the cup body (22) is provided with a first connection portion, on which an external thread (221) is provided; the lower end of the upper cover (21) is provided with a second connection portion, on which an internal thread (216) is provided; the external thread (221) and the internal thread (216) are threadedly connected.

4. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 3, characterized in that: The second connection portion is also provided with a step surface (217), the upper end of the first connection portion is pressed against the lower side of the step surface (217), and a sealing ring (3) is crimped between the upper end of the first connection portion and the step surface (217).

5. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 2, characterized in that: The gas guide pipe comprises a first branch pipe (212) and a second branch pipe (215) which are interconnected, and the gas passes through the first branch pipe (212) and the second branch pipe (215) in sequence, and the diameter of the first branch pipe (212) is larger than the diameter of the second branch pipe (215).

6. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 5, characterized in that: The input end of the air guide pipe is arranged at the left end of the first branch pipe (212), a through hole (213) is arranged at the right end of the first branch pipe (212), and the second branch pipe (215) is glued to the inner wall of the through hole (213).

7. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 6, characterized in that: The right end of the first branch pipe (212) is provided with an inclined surface (214), and the projection of the inclined surface (214) in the vertical direction covers the through hole (213).

8. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 1, characterized in that: The liquid (4) is synthetic motor oil.

9. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 2, characterized in that: The cup body (22) is made of PP.

10. A gas water heater capable of visually displaying gas intake conditions as claimed in claim 2, characterized in that: The upper cover (21) and the air guide tube are made of metal or plastic.

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