CN204879109U - Anti-frost-crack drainage pipeline and water heater with same - Google Patents

Abstract

The utility model provides an anti-freezing and cracking drainage pipeline. The drainage pipeline is arranged as a double-layer pipeline structure, including an outer layer pipeline and an inner layer pipeline. The outer layer pipeline and the inner layer pipeline are closely bonded to form a concentric pipeline structure. The outer pipe is made of metal material; the inner pipe is made of microporous plastic. The anti-freezing and cracking drainage pipe provided by the utility model is not only easy to assemble and manufacture, but also can effectively prevent the freezing and cracking of the drainage pipe and ensure the safety of the water heater water pipe system.

Description

An anti-freeze crack drainage pipe and a water heater having the same

technical field

The utility model relates to an anti-freezing and cracking drain pipe and a manufacturing method thereof, in particular to a drain pipe for water heaters, and belongs to the technical field of water heaters.

Background technique

The raw materials of existing drainage pipes for water heaters usually use metal materials such as steel pipes, aluminum plates, copper materials and aluminum foil plates, and their basic structure is a hollow pipe with a certain wall thickness. However, for drainage pipes made of metal materials, their deformation resistance is poor. When the ambient temperature is lower than 0°C, the water in the drainage pipes freezes into ice, and the volume expands, causing a certain pressure on the inner wall of the drainage pipes. When the pressure reaches the tensile strength of the drainage pipe guide material, the material will be destroyed, the drainage pipe will be frozen and cracked, resulting in the failure of the drainage pipe, the failure rate of the water heater product will increase, and the maintenance cost will increase.

In the prior art, although there is a technique of using antifreeze heating cables to achieve the antifreeze cracking effect, it is difficult to popularize and use it on a large scale because of its high power consumption and difficult production and assembly operations. Therefore, it is necessary to provide an antifreeze crack drainage pipe for water heaters with simple structure, convenient assembly and good antifreeze crack effect.

Utility model content

The purpose of this utility model is to provide an anti-freezing crack drainage pipe to solve the problem that the existing drainage pipe is easy to be frozen and cracked. Further, the antifreeze crack drainage pipe is used for water heaters.

The purpose of the utility model is realized through the following technical solutions:

On the one hand, the utility model provides an anti-freezing and cracking drainage pipe. The drainage pipe is set as a double-layer pipe structure, including an outer layer pipe and an inner layer pipe. The outer layer pipe and the inner layer pipe are closely attached to form a concentric pipe. structure.

Preferably, in the above-mentioned antifreeze crack drainage pipe, the outer pipe is made of metal material.

More preferably, the metal material is steel pipe, aluminum plate, copper material or aluminum foil plate.

Preferably, in the above-mentioned antifreeze crack drainage pipe, the inner pipe is made of microporous plastic.

Further, in the above-mentioned antifreeze crack drainage pipeline, a drainage valve is provided on the drainage pipeline, and the drainage pipeline is installed on the water pipe support of the water heater through the drainage valve.

Furthermore, in the above-mentioned antifreeze crack drainage pipeline, the drainage valve is provided with a drainage hole.

Furthermore, the drainage pipe has bends.

The manufacturing method for manufacturing the above-mentioned antifreeze crack drainage pipe includes: positioning and punching the microporous plastic pipe of the inner layer, so that the hole corresponds to the position of the drain hole on the drain valve; placing the microporous plastic pipe on the In the metal material pipe and make it fit closely to the inner wall of the metal material pipe; bend the tightly fitted double-layer pipe into shape.

Preferably, the microporous plastic pipe is installed in the metal material pipe in an interference fit manner.

Preferably, the bending and forming of the pipe is carried out at room temperature, that is, the bending and forming is performed by cold working.

Preferably, the bending angle of the bending forming is not more than 90 degrees.

A water heater comprises the above-mentioned antifreeze crack drainage pipe.

The anti-freezing and cracking drainage pipe provided by the utility model is not only easy to assemble and manufacture, but also can effectively prevent the freezing and cracking of the drainage pipe, ensure the safety of the water pipeline system of the water heater, and greatly improve product reliability, thereby increasing the service life of the water heater and reducing maintenance.

Description of drawings

The utility model will be described in further detail below according to the accompanying drawings and embodiments.

Fig. 1 is a schematic diagram of the installation position of the drain pipe of the water heater;

Fig. 2 is the schematic diagram of drainage pipe in the prior art;

Fig. 3 is a schematic cross-sectional view of a drainage pipeline in the prior art;

Fig. 4 is a schematic cross-sectional view of the antifreeze crack drainage pipe provided by the embodiment of the present invention;

Fig. 5 is a schematic structural view of the microporous plastic used in the embodiment of the present invention.

Detailed ways

The preferred embodiments of the present utility model are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

As shown in FIG. 1 , the drain pipe 1 of the water heater is installed on the water pipe bracket 3 of the water heater 2 . In the figure, a flow divider 14, a water inlet pipe 10, a drain pipe 11, a drain valve 12, and a water pipe bracket 3 are included.

The appearance and cross-sectional schematic diagrams of the existing drainage pipes are shown in Fig. 2 and Fig. 3 .

Fig. 4 shows a schematic cross-sectional view of the antifreeze crack drainage pipe provided by the embodiment of the present invention. Wherein, the antifreeze crack drainage pipeline 1 includes a drainage pipe 11 and a drainage valve 12 . As shown in FIG. 1 , it can be seen that the entire drain pipe 1 is integrally fixed on the water pipe support 3 of the water heater 2 via the drain valve 12 . The drain valve 12 is provided with a drain hole 121 .

As shown in Figure 4, different from the existing drainage pipeline shown in Figure 3, the antifreeze crack drainage pipeline provided by the embodiment of the utility model is a double-layer pipeline structure, including an outer layer pipeline 101 and an inner layer pipeline 102, the outer layer The pipe 101 and the inner pipe 102 are closely attached to form a concentric pipe structure.

The anti-freezing and cracking drainage pipe provided by the embodiment of the utility model is preferably made of metal material as the outer pipe. The metal material can be steel pipe, aluminum plate, copper material or aluminum foil plate commonly used in the prior art, but the possibility of using other materials is not excluded. As long as it is within the concept scope of the utility model and meets the utility model purpose of the utility model, any other material can be used to make the outer layer pipe.

The anti-freezing and cracking drainage pipe provided by the embodiment of the utility model is preferably made of microporous plastic as the inner pipe. A schematic diagram of the microporous plastic is shown in FIG. 5 . In microporous plastics, numerous micropores 111 and solid parts 112 are included. It is also conceivable to use other materials of high elasticity and toughness for the inner pipe.

The biggest feature of the microporous plastic is that the cells are small and dense. Due to the existence of micropores, microporous plastic pipes have strong impact resistance and toughness, and high resilience. When the ambient temperature is lower than 0°C, the water in the drainage pipe freezes into ice, and the volume expands, causing a certain pressure on the inner wall of the metal drainage pipe. At this time, the microporous plastic pipe with strong toughness and high resilience can be compressed. It significantly buffers the extrusion force caused by volume expansion on the inner wall of the metal drainage pipe, and effectively prevents the phenomenon of freezing and cracking of the drainage pipe under low temperature conditions.

The drainage pipe provided by the above-mentioned embodiments of the utility model effectively improves the technical shortcomings of the existing drainage pipes that are easy to freeze and crack. At the same time, it can also be assembled and manufactured very conveniently. The specific description is as follows:

First, the microporous plastic pipe 102 of the inner layer is positioned and punched so that the hole corresponds to the position of the drain hole 121 on the drain valve 12; secondly, the microporous plastic pipe 102 is placed in the metal material pipe 101 and made tightly Attached to the inner wall of the metal material pipeline 101.

Preferably, the tightly fitted double-layer pipe is bent and formed; the bending and forming of the pipe is carried out at room temperature, that is, the bending is formed by cold working.

Preferably, the bending angle of the bending forming is not more than 90 degrees.

Preferably, the microporous plastic pipe 102 is installed in the metal material pipe 101 in an interference fit manner. Compared with the drainage pipes in the prior art shown in Fig. 2 and Fig. 3, the assembly and manufacture of the drainage pipe provided by the embodiment of the present invention does not require the use of elbow joints, and the microporous plastic in the inner layer itself also plays a role in connection and maintenance. The function of sealing saves parts and processes, and makes assembly and manufacturing easier.

The antifreeze crack drainage pipe provided in the above embodiments of the utility model has the advantages of simple structure, convenient processing, good antifreeze crack effect and wide application range.

The embodiment of the utility model also provides a water heater, which uses the above-mentioned anti-freezing and cracking drainage pipe.

The technical content and technical features of the utility model have been disclosed above, but those skilled in the art may still make various replacements and modifications based on the teaching and disclosure of the utility model without departing from the spirit of the utility model. Therefore, the protection of the utility model The scope should not be limited to the content disclosed in the embodiments, but should include various replacements and modifications that do not deviate from the utility model, and are covered by the claims of the utility model.

Claims (8)

1. a frost-cracking-preventing drainage pipe, is characterized in that, described drainage pipe is set to double-skin duct structure, comprises outer layer pipe and inner layer pipe, and described outer layer pipe and inner layer pipe fit tightly, and forms concentric pipe structure.

2. frost-cracking-preventing drainage pipe as claimed in claim 1, it is characterized in that, described outer layer pipe is made up of metallic material.

3. frost-cracking-preventing drainage pipe as claimed in claim 2, it is characterized in that, described metallic material is steel pipe, aluminium sheet, copper material or aluminum foil plate.

4. frost-cracking-preventing drainage pipe as claimed in claim 1, it is characterized in that, described inner layer pipe is made up of cellular plastic.

5. the frost-cracking-preventing drainage pipe according to any one of claim 1-4, is characterized in that, described drainage pipe is provided with drain valve, and described drainage pipe is arranged on the Water pipe bracket of water heater through described drain valve.

6. the frost-cracking-preventing drainage pipe according to any one of claim 1-4, is characterized in that, described drainage pipe has bending.

7. frost-cracking-preventing drainage pipe as claimed in claim 6, it is characterized in that, the bending angle of described drainage pipe is no more than 90 degree.

8. a water heater, it comprises the arbitrary described frost-cracking-preventing drainage pipe of claim 1 to 7.