Exhaust pipe of water heater for cold region

Abstract

The utility model discloses a water heater exhaust pipe for a cold region, and relates to the technical field of solar exhaust pipelines. The inlet end of the exhaust pipe is connected with a water tank of the water heater, the rainproof cover is mounted at the outlet end of the exhaust pipe and consists of a cover body and a connecting rod, the cover body is umbrella-shaped, the bottom of the cover body is connected with the outlet end of the exhaust pipe through the connecting rod, a heat tracing band is wound on the exhaust pipe, and the heat tracing band is connected with the water tank of the water heater. The exhaust pipe is further sleeved with a heat preservation sleeve after being wound with the heat tracing band, an inner cavity of the exhaust pipe is communicated with an inner cavity of the heat preservation sleeve through a drainage pipe, and a sealing plug is arranged in a pipe opening of the drainage pipe located on the heat preservation sleeve. In cold seasons, water mist formed in the exhaust pipe flows out through the drainage pipe, and after exhaust of the exhaust pipe is completed and the water mist in the exhaust pipe is discharged through the drainage pipe, the sealing plug is installed at a pipe opening of the drainage pipe to prevent cold air from entering the exhaust pipe, so that the drainage pipe is always kept in a constant-temperature state, and breakage and influence on the use efficiency of the exhaust pipe are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solar exhaust pipelines, and particularly relates to a water heater exhaust pipe for cold regions. Background Art

[0002] As a commonly used clean energy source, the internal water tank of solar energy often needs to exhaust gas through an exhaust pipe to avoid excessive steam in the water tank and affect the heating efficiency. However, in cold regions, during the exhaust process of the drainage pipe located on the roof, part of the exhausted steam will volatilize, and part of it will quickly condense into water mist due to the influence of cold air and adhere to the inner wall of the exhaust pipe. After the exhaust ends, the water mist adhering to the inner wall of the exhaust pipe will form ice layers under the action of cold air. Since the density of ice is smaller than that of water, the volume expands, which may cause the exhaust pipe to rupture and thus affect the use efficiency of the exhaust pipe. Content of the Utility Model

[0003] In view of the above technical problems, the utility model provides a water heater exhaust pipe for cold regions to solve the problem that the solar drainage pipe in cold regions is prone to freezing and cracking.

[0004] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A water heater exhaust pipe for cold regions includes a drainage pipe. The inlet end of the exhaust pipe is connected to the water heater water tank, and a rain shield is installed at the outlet end of the exhaust pipe. The rain shield consists of a shield body and a connecting rod. The shield body is in an umbrella shape, and the bottom of the shield body is connected to the outlet end of the exhaust pipe through the connecting rod. A heat tracing band is wound around the exhaust pipe. After the exhaust pipe is wound with the heat tracing band, a heat preservation sleeve is further sleeved. The inner cavity of the exhaust pipe is communicated with the inner cavity of the heat preservation sleeve through the drainage pipe, and a sealing plug is arranged in the drainage pipe orifice located on the heat preservation sleeve.

[0006] Furthermore, a support rod is supported between the heat preservation sleeve and the water heater positioning bridge.

[0007] Furthermore, an anti-corrosion layer is arranged at the top of the shield body.

[0008] Furthermore, the support rod is telescopic.

[0009] Furthermore, a sealing gasket is arranged at the connection between the exhaust pipe and the water heater water tank.

[0010] Furthermore, the connection between the rain shield and the exhaust pipe is detachable.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and convenient to install. The rain shield can prevent rainwater from entering the exhaust pipe on rainy days, causing blockage of the exhaust pipe. In cold seasons, the heating tape is heated and the heat preservation sleeve is used for heat preservation. The water mist formed in the exhaust pipe flows out through the drain pipe. After the exhaust pipe finishes exhausting and the water mist therein is discharged through the drain pipe, a sealing plug is installed in the drain pipe orifice on the heat preservation sleeve to prevent cold air from entering the exhaust pipe, so that the drain pipe always maintains a constant temperature state, avoiding cracking and affecting the use efficiency of the exhaust pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of the present utility model.

[0013] In the figure:

[0014] 1, drain pipe; 2, exhaust pipe; 3, rain shield; 4, cover body; 5, connecting rod; 6, heat preservation sleeve; 7, sealing plug; 8, heating tape; 9, support rod; 10, water heater positioning bridge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0016] A water heater exhaust pipe for cold regions includes a drain pipe 1. The inlet end of the exhaust pipe 2 is connected to the water heater water tank, and a rain shield 3 is installed at the outlet end of the exhaust pipe 2. The rain shield 3 is composed of a cover body 4 and a connecting rod 5. The cover body 4 is in an umbrella shape, and the bottom of the cover body 4 is connected to the outlet end of the exhaust pipe 2 through the connecting rod 5. A heating tape 8 is wound around the exhaust pipe 2. After the exhaust pipe 2 is wound with the heating tape 8, a heat preservation sleeve 6 is further sleeved thereon. The inner cavity of the exhaust pipe 2 is communicated with the inner cavity of the heat preservation sleeve 6 through the drain pipe 1. A sealing plug 7 is provided in the drain pipe orifice of the heat preservation sleeve 6. The structure of the present utility model is simple and convenient to install. The rain shield 3 can prevent rainwater from entering the exhaust pipe 2 on rainy days, causing blockage of the exhaust pipe 2. In cold seasons, the heating tape 8 is heated and the heat preservation sleeve 6 is used for heat preservation. The water mist formed in the exhaust pipe 2 flows out through the drain pipe 1. After the exhaust pipe 2 finishes exhausting and the water mist therein is discharged through the drain pipe 1, a sealing plug 7 is installed in the drain pipe orifice of the heat preservation sleeve 6 to prevent cold air from entering the exhaust pipe 2, so that the drain pipe 1 always maintains a constant temperature state, avoiding cracking and affecting the use efficiency of the exhaust pipe 2.

[0017] A support rod 9 is supported between the heat preservation sleeve 6 and the water heater positioning bridge 10. The support rod 9 supports the heat preservation pipe and the exhaust pipe 2 therein, avoiding the situation of tilting due to vibration during the exhaust process.

[0018] An anti-corrosion layer is provided on the top of the cover body 4, so that the cover body 4 still maintains good service performance after being exposed to wind and rain.

[0019] The support rod 9 is telescopic. When water accumulates in the exhaust pipe 2, the height of the support rod 9 can be adjusted to make the exhaust pipe 2 have a certain inclination angle, and the accumulated water on the inner wall is discharged through the drain pipe 1.

[0020] A sealing gasket is provided at the connection between the exhaust pipe 2 and the water heater water tank to ensure good sealing performance.

[0021] The rain shield 3 and the exhaust pipe 2 are detachably connected.

[0022] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An exhaust pipe for a water heater used in cold regions, characterized in that, It includes a drain pipe (1). The inlet end of the exhaust pipe (2) is connected to the water heater tank. A rain shield (3) is installed at the outlet end of the exhaust pipe (2). The rain shield (3) is composed of a cover body (4) and a connecting rod (5). The cover body (4) is in an umbrella shape. The bottom of the cover body (4) is connected to the outlet end of the exhaust pipe (2) through the connecting rod (5). A heat tracing tape (8) is wound around the exhaust pipe (2). After the exhaust pipe (2) is wound with the heat tracing tape (8), a heat preservation sleeve (6) is further sleeved thereon. The inner cavity of the exhaust pipe (2) is communicated with the inner cavity of the heat preservation sleeve (6) through the drain pipe (1). A sealing plug (7) is arranged in the pipe orifice of the drain pipe (1) located on the heat preservation sleeve (6).

2. The exhaust pipe of a water heater for cold regions according to claim 1, characterized in that: A support rod (9) is supported between the heat preservation sleeve (6) and the water heater positioning bridge (10).

3. The exhaust pipe of a water heater for cold regions according to claim 1, characterized in that: An anti-corrosion layer is provided at the top of the cover body (4).

4. The exhaust pipe of a water heater for cold regions according to claim 2, characterized in that: The support rod (9) is telescopic.

5. The exhaust pipe of a water heater for cold regions according to claim 1, characterized in that: A sealing gasket is provided at the connection between the exhaust pipe (2) and the water heater tank.

6. The exhaust pipe of a water heater for cold regions according to claim 1, characterized in that: The rain shield (3) is detachably connected to the exhaust pipe (2).

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