Water heater connecting pipe

Abstract

The water heater connecting pipe comprises a main pipe body, a cold water inlet pipe, a hot water outlet pipe and a check valve, the cold water inlet pipe and the hot water outlet pipe are arranged on the side face of the main pipe body and communicated with each other, the end, located on the cold water inlet pipe, of the main pipe body is a cold water inlet, and the end, located on the hot water outlet pipe, of the main pipe body is a hot water outlet. And the check valve is arranged in the main pipe body between the cold water inlet pipe and the hot water outlet pipe. And the check valve is arranged in the connecting pipe, so that medium backflow is effectively prevented, stable supply of hot water is ensured, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heater accessories, in particular to a water heater connecting pipe. Background Art

[0002] As an indispensable household appliance in modern families, water heaters are used frequently and have strict requirements on safety and reliability. The existing water heater connection pipes are mainly composed of a main body, a cold water inlet pipe and a hot water outlet pipe, which are used to introduce tap water into the water heater for heating and transport the heated hot water to the point of use. However, in actual use, due to water pressure fluctuations or water outages, cold water is prone to flow back from the hot water pipe, which will not only cause the hot water in the hot water system to be diluted by cold water, reduce the hot water temperature, and affect the user experience, but also may damage the internal structure of the water heater due to the water hammer effect caused by the backflow, shortening the service life of the water heater.

[0003] In addition, medium backflow may also bring bacteria and other pollutants in the hot water system into the cold water pipeline, posing a threat to the safety of drinking water. Therefore, how to effectively prevent medium backflow and ensure the normal operation of the water heater system and the safety of users' water use has become an urgent problem to be solved in the current design of water heater connecting pipes. Utility Model Content

[0004] In view of the deficiencies in the background technology, the utility model provides a water heater connecting pipe.

[0005] The technical solution adopted by the utility model is: a water heater connecting pipe, comprising a main body, a cold water inlet pipe, a hot water outlet pipe and a check valve, wherein the cold water inlet pipe and the hot water outlet pipe are arranged on the side of the main body and are connected to each other, the end of the main body located at the cold water inlet pipe is a cold water inlet, the end of the main body located at the hot water outlet pipe is a hot water outlet, and the check valve is arranged in the main body between the cold water inlet pipe and the hot water outlet pipe.

[0006] Furthermore, the main pipe body, the cold water inlet pipe and the hot water outlet pipe are an integrally formed structure.

[0007] Furthermore, the main pipe is provided with an annular limiting step abutting against the bottom of the check valve, and the inner wall of the main pipe is provided with an engaging groove engaged with the convex step on the check valve.

[0008] Furthermore, the outer circles of the cold water inlet end, the hot water outlet end, the cold water inlet pipe end and the hot water outlet pipe end are all provided with connecting external threads.

[0009] Furthermore, a reinforcing mechanism is provided on the outer wall of the main pipe.

[0010] Furthermore, the reinforcing mechanism is a transverse reinforcing bar and a vertical reinforcing bar, or a transverse reinforcing bar and a rectangular reinforcing bar.

[0011] Furthermore, a reinforcing plate is provided between the thick-diameter section and the thin-diameter section of the cold water inlet pipe and the hot water outlet pipe.

[0012] The beneficial effects of the utility model are:

[0013] 1. Effectively prevent medium backflow: By setting a check valve inside the connecting pipe, the medium backflow can be effectively prevented, ensuring a stable supply of hot water and improving the user experience.

[0014] 2. Enhance system stability: The setting of the check valve effectively avoids the water hammer effect caused by medium backflow, reduces the impact and damage to the internal structure of the water heater, extends the service life of the water heater, and enhances the stability and reliability of the entire hot water system.

[0015] 3. Improve the safety of drinking water: While preventing the backflow of the medium, it also prevents pollutants such as bacteria in the hot water system from being brought into the cold water pipeline, protecting the safety of drinking water and reducing potential health risks.

[0016] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0020] Figure 1-2 In: 1. Main pipe; 2. Cold water inlet pipe; 3. Hot water outlet pipe; 4. Check valve; 5. Cold water inlet; 6. Hot water outlet; 7. Annular limit step; 8. Fitting groove; 9. Connecting external thread; 10. Horizontal reinforcement strip; 11. Vertical reinforcement strip; 12. Rectangular reinforcement strip; 13. Reinforcement plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] The utility model provides a water heater connecting pipe.

[0024] In this embodiment, refer to Figure 1-2 The water heater connecting pipe comprises a main body 1, a cold water inlet pipe 2, a hot water outlet pipe 3 and a check valve 4. The cold water inlet pipe and the hot water outlet pipe are arranged on the side of the main body and are connected to each other. The end of the main body located at the cold water inlet pipe is a cold water inlet 5, and the end of the main body located at the hot water outlet pipe is a hot water outlet 6. The check valve is arranged in the main body between the cold water inlet pipe and the hot water outlet pipe.

[0025] In the above technical scheme, a water heater connecting pipe is provided, including a main body, a cold water inlet pipe, a hot water outlet pipe and a check valve. The cold water inlet pipe and the hot water outlet pipe are arranged on the side of the main body and are connected to each other. The two ends of the main body are respectively a cold water inlet and a hot water outlet. The check valve is arranged in the main body between the cold water inlet pipe and the hot water outlet pipe to prevent the medium from flowing back.

[0026] By setting a check valve, the backflow of the medium is effectively avoided, the purity and stability of the hot water are ensured, and the efficiency and safety of the water heater are improved.

[0027] Specifically, the main pipe body, the cold water inlet pipe and the hot water outlet pipe are an integrally formed structure.

[0028] The main body, cold water inlet pipe and hot water outlet pipe adopt an integrated molding structure, that is, they are formed in one go through a mold without the need for additional welding or bonding processes. The integrated molding design improves the overall strength and sealing of the connecting pipe, reduces the risk of water leakage, simplifies the production process, and reduces manufacturing costs.

[0029] Specifically, the main pipe is provided with an annular limiting step 7 which abuts against the bottom of the check valve, and the inner wall of the main pipe is provided with an engaging groove 8 which engages with the convex step on the check valve.

[0030] The main pipe body is provided with an annular limiting step that abuts against the bottom of the check valve, and a fitting groove that fits with the convex step on the check valve to ensure accurate installation and stable operation of the check valve. The design of the limiting step and fitting groove ensures the correct position, firm fixation and convenience of installation of the check valve, avoids displacement or damage of the check valve under the impact of water flow, and enhances the reliability of the connecting pipe.

[0031] Specifically, the outer circles of the cold water inlet end, the hot water outlet end, the cold water inlet pipe end and the hot water outlet pipe end are all provided with connecting external threads 9.

[0032] The outer circles of the cold water inlet end, the hot water outlet end, the cold water inlet pipe end and the hot water outlet pipe end are all provided with connecting external threads to facilitate quick connection with other pipes or equipment.

[0033] Specifically, a reinforcing mechanism is provided on the outer wall of the main pipe body; the reinforcing mechanism is a transverse reinforcing strip 10 and a vertical reinforcing strip 11, or a transverse reinforcing strip and a rectangular reinforcing strip 12; a reinforcing plate 13 is provided between the thick diameter section and the thin diameter section of the cold water inlet pipe and the hot water outlet pipe.

[0034] By providing a reinforcing mechanism and a reinforcing plate, the strength of the connecting pipe can be increased.

[0035] Technical personnel should note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A water heater connecting pipe, characterized in that: It includes a main body, a cold water inlet pipe, a hot water outlet pipe and a check valve. The cold water inlet pipe and the hot water outlet pipe are arranged on the side of the main body and are connected to each other. The end of the main body located at the cold water inlet pipe is the cold water inlet, and the end of the main body located at the hot water outlet pipe is the hot water outlet. The check valve is arranged in the main body between the cold water inlet pipe and the hot water outlet pipe.

2. The water heater connecting pipe according to claim 1, characterized in that: The main pipe, the cold water inlet pipe and the hot water outlet pipe are an integrally formed structure.

3. The water heater connecting pipe according to claim 1, characterized in that: The main pipe is provided with an annular limiting step which abuts against the bottom of the check valve, and the inner wall of the main pipe is provided with an engaging groove which engages with the convex step on the check valve.

4. The water heater connecting pipe according to claim 1, characterized in that: The outer circles of the cold water inlet end, the hot water outlet end, the cold water inlet pipe end and the hot water outlet pipe end are all provided with connecting external threads.

5. The water heater connecting pipe according to claim 1, characterized in that: A reinforcing mechanism is arranged on the outer wall of the main pipe.

6. The water heater connecting pipe according to claim 5, characterized in that: The reinforcing mechanism is a transverse reinforcing strip and a vertical reinforcing strip, or a transverse reinforcing strip and a rectangular reinforcing strip.

7. The water heater connecting pipe according to claim 1, characterized in that: A reinforcing plate is provided between the thick-diameter section and the thin-diameter section of the cold water inlet pipe and the hot water outlet pipe.

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