Circulating pollution discharge and cleaning gas water heater

Abstract

The utility model discloses a circulating pollution discharge and cleaning gas water heater, which belongs to the technical field of water heaters, and comprises a water heater body, a water return device host arranged at the end part of a water inlet pipe of the water heater body, a three-way pipe arranged at the bottom of the water return device host, and a water return pipe and a cold water pipe which are arranged at the end part of the three-way pipe, a hot water conveying pipe is installed in the water heater body, a hot water discharging pipe extending out of the water heater body is arranged at the bottom end of the hot water conveying pipe, and a filter screen is horizontally installed at the inner top end of the hot water discharging pipe. The filter screen is arranged at the end of the hot water discharge pipe, so that scale can be filtered in the using process of the device, and in addition, the cleaning assembly composed of the volute, the impeller, the filter bin, the shaft rod and the scraper is matched, so that the scale can be removed in the using process of the water heater. The scraping plate is automatically controlled to be attached to the surface of the filter screen to rotate by utilizing the impact force of water flow, so that the filter screen is self-cleaned, and the filtering effect is ensured.

Description

Technical Field

[0001] This utility model relates to a gas water heater, and more particularly to a gas water heater with circulating sewage discharge and cleaning, belonging to the field of water heater technology. Background Technology

[0002] Existing technology, such as the utility model application with application number 202021197516.7, discloses a circulating preheating gas water heater. To address the issues of frequent pump restarts or high water temperature at the water inlet (return water) but low water temperature at the outlet or in the pipes, especially in multi-functional gas water heaters where the presence of water in the return pipe easily leads to unstable outlet water temperature, this utility model installs a solenoid valve on the return pipe. This valve can cut off the loop in non-preheating mode or multi-functional mode, preventing the loop from affecting water pressure or the overall water heater, thus improving the independence of the preheating mode and ensuring a very stable outlet water temperature. Furthermore, the water pump is located on the inlet channel, which can pressurize the water and improve the bathing experience. Simultaneously, this utility model uses an outlet water temperature sensor to detect whether the outlet water temperature meets the start-up requirements, easily solving the problem of frequent pump restarts in gas water heaters with preheating functions, greatly improving the user experience.

[0003] The above-mentioned applications still have shortcomings:

[0004] When the water temperature in a gas water heater exceeds 60℃, scale is more likely to form. Existing water heaters generally cannot filter and clean the scale in the hot water during use, which can easily lead to clogging of faucets or showerheads. Even if scale can be filtered, the filter screen is prone to clogging during long-term use, affecting the performance.

[0005] To address this issue, a gas-fired water heater with a circulating sewage discharge system was designed. Utility Model Content

[0006] The main purpose of this utility model is to provide a gas water heater with a circulating sewage discharge and cleaning system. By installing a filter screen at the end of the hot water outlet pipe, scale can be filtered out during the use of the device. In addition, the cleaning assembly consisting of a volute, impeller, filter chamber, shaft, and scraper can automatically control the scraper to rotate against the surface of the filter screen during the use of the water heater, using the impact force of the water flow to self-clean the filter screen and ensure the filtration effect. By opening a pipe receiving groove on the outside of the water heater body, and combining it with a straight pipe, switch valve, reel, and hose to form a sewage discharge mechanism, it is convenient to regularly clean the impurities inside the filter chamber, making it more convenient to use.

[0007] The objective of this utility model can be achieved by adopting the following technical solution:

[0008] A gas water heater with circulating sewage cleaning includes a water heater body, a return water unit installed at the end of the water inlet pipe of the water heater body, a tee pipe installed at the bottom of the return water unit, and a return water pipe and a cold water pipe installed at the end of the tee pipe. A hot water delivery pipe is installed inside the water heater body, and a hot water discharge pipe extending to the outside of the water heater body is provided at the bottom end of the hot water delivery pipe. A filter screen is horizontally installed at the top inner end of the hot water discharge pipe, and the top of the filter screen is at the same horizontal plane as the end of the hot water discharge pipe. A cleaning component for cleaning impurities on the surface of the filter screen is installed between the top of the hot water discharge pipe and the bottom end of the hot water delivery pipe.

[0009] Preferred: The cleaning assembly includes a volute, an impeller, a filter chamber, a shaft, and a scraper. The volute is horizontally installed inside the water heater body. The bottom end of the hot water delivery pipe is connected to the inside of the volute. An impeller is rotatably installed in the middle of the volute. A filter chamber connected to the top end of the hot water discharge pipe is fixed at the bottom of the volute. A shaft is installed at the bottom end of the impeller. A scraper that fits against the top of the filter screen is fixed at the bottom end of the shaft. A sewage discharge mechanism is provided at the bottom of the outer side of the filter chamber.

[0010] Preferably, the top of the hot water discharge pipe is higher than the horizontal plane at the bottom of the filter chamber, and the length of the scraper is greater than the diameter of the hot water discharge pipe.

[0011] Preferably, the sewage discharge mechanism includes a pipe receiving trough, a straight pipe, a switch valve, and a hose. The pipe receiving trough is located on the side of the water heater body. A straight pipe is installed between the bottom of the side of the filter compartment and the pipe receiving trough. A switch valve is installed on the straight pipe. A hose is installed at the end of the straight pipe located inside the pipe receiving trough.

[0012] Preferably, the connection between the straight pipe and the filter chamber is lower than the horizontal plane at the top of the hot water discharge pipe, and the inner bottom of the filter chamber is a slope, which is inclined towards the end of the straight pipe.

[0013] Preferably, a take-up reel is fixedly installed on the inner side of the take-up groove, and a groove is provided on the outer side of the take-up reel. The hose is wound on the take-up reel and located inside the groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] This utility model provides a circulating sewage cleaning gas water heater. By installing a filter screen at the end of the hot water discharge pipe, scale can be filtered during the use of the device. In addition, with the cleaning component consisting of a volute, impeller, filter chamber, shaft and scraper, the scraper can be automatically controlled to rotate against the surface of the filter screen by the impact force of the water flow during the use of the water heater, so as to clean the filter screen and ensure the filtration effect.

[0016] By creating a pipe-receiving groove on the outside of the water heater body, and combining it with a drain mechanism consisting of a straight pipe, a switch valve, a reel, and a hose, it is possible to conveniently and regularly clean the impurities inside the filter chamber, making it more convenient to use. Attached Figure Description

[0017] Figure 1 This is a front sectional view of the present invention;

[0018] Figure 2 This is a diagram of the filter mechanism of this utility model;

[0019] Figure 3 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0020] Figure 4 This is the front view of the present invention.

[0021] In the diagram: 1. Water heater body; 2. Return water unit; 3. T-pipe; 4. Return water pipe; 5. Cold water pipe; 6. Hot water delivery pipe; 7. Volute; 8. Impeller; 9. Filter chamber; 10. Hot water discharge pipe; 11. Filter screen; 12. Shaft; 13. Scraper; 14. Sewage discharge mechanism; 15. Pipe take-up groove; 16. Straight pipe; 17. Switch valve; 18. Winding reel; 19. Hose. Detailed Implementation

[0022] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0023] like Figures 1-4 As shown, this embodiment provides a gas water heater with circulating sewage cleaning, including a water heater body 1, a return water unit 2 installed at the end of the water inlet pipe of the water heater body 1, a three-way pipe 3 installed at the bottom of the return water unit 2, and a return water pipe 4 and a cold water pipe 5 installed at the end of the three-way pipe 3. A hot water delivery pipe 6 is installed inside the water heater body 1. A hot water discharge pipe 10 extending to the outside of the water heater body 1 is provided at the bottom end of the hot water delivery pipe 6. A filter screen 11 is horizontally installed at the top inner end of the hot water discharge pipe 10. The top of the filter screen 11 is on the same horizontal plane as the end of the hot water discharge pipe 10. A cleaning component for cleaning impurities on the surface of the filter screen 11 is installed between the top of the hot water discharge pipe 10 and the bottom end of the hot water delivery pipe 6.

[0024] Overall working principle: During the use of the water heater body 1, the water in the household water pipes can be preheated and circulated through the use of the return water unit 2, ensuring that the water heater body 1 can provide hot water immediately. In addition, if the hot water contains scale, it is filtered by the filter screen 11 at the end of the hot water discharge pipe 10 to avoid clogging of the faucet or shower. After a long period of filtration, a certain amount of impurities will accumulate on the surface of the filter screen 11. In order to ensure the filtration effect, a cleaning component is used to sweep off the impurities on the surface of the filter screen 11.

[0025] In this embodiment, the cleaning assembly includes a volute 7, an impeller 8, a filter chamber 9, a shaft 12, and a scraper 13. The volute 7 is horizontally installed inside the water heater body 1. The bottom end of the hot water delivery pipe 6 is connected to the inside of the volute 7. The impeller 8 is rotatably installed at the middle position of the volute 7. The bottom of the volute 7 is fixed with a filter chamber 9 that is connected to the top end of the hot water discharge pipe 10. The bottom end of the impeller 8 is installed with a shaft 12. The bottom end of the shaft 12 is fixed with a scraper 13 that fits against the top of the filter screen 11. A sewage discharge mechanism 14 is provided at the bottom of the outer side of the filter chamber 9.

[0026] Local working principle: After hot water is discharged from the inside of the hot water delivery pipe 6, it enters the inside of the volute 7. The volute 7 guides the hot water, and the flowing hot water controls the rotation of the impeller 8. The rotation of the impeller 8 drives the scraper 13 at the bottom of the shaft 12 to rotate. The scraper 13 rotates against the surface of the filter screen 11, scraping off the impurities and discharging them outwards into the filter chamber 9. Then, the impurities can be discharged to the outside periodically through the sewage discharge mechanism 14.

[0027] In this embodiment, the top of the hot water discharge pipe 10 is higher than the horizontal plane at the bottom of the filter chamber 9, and the length of the scraper 13 is greater than the diameter of the hot water discharge pipe 10.

[0028] Local working principle: During the rotation of the scraper 13, the surface of the filter screen 11 can be cleaned in all directions, and the scraped-off impurities fall into the bottom of the filter chamber 9.

[0029] In this embodiment, the sewage discharge mechanism 14 includes a pipe receiving groove 15, a straight pipe 16, a switch valve 17, and a hose 19. The pipe receiving groove 15 is opened on the side of the water heater body 1. A straight pipe 16 is installed between the bottom of the side of the filter chamber 9 and the pipe receiving groove 15. A switch valve 17 is installed on the straight pipe 16. A hose 19 is installed at one end of the straight pipe 16 inside the pipe receiving groove 15.

[0030] Local working principle: When the impurities are discharged to the outside of the device, the hose 19 is taken out from the inside of the pipe receiving groove 15 and placed into the inside of the water tank. Then the switch valve 17 is opened, and the impurities inside the filter chamber 9 flow out with the water flow.

[0031] In this embodiment, the connection between the straight pipe 16 and the filter chamber 9 is lower than the horizontal plane at the top of the hot water discharge pipe 10, and the inner bottom of the filter chamber 9 is a slope, which is inclined toward the end of the straight pipe 16.

[0032] Local working principle: The inclined design of the bottom of filter chamber 9 can facilitate the complete discharge of impurities, making it more practical.

[0033] In this embodiment, a take-up reel 18 is fixedly installed on the inner side of the take-up groove 15, and a groove is provided on the outer side of the take-up reel 18. The hose 19 is wound on the take-up reel 18 and located inside the groove.

[0034] Local working principle: After the impurities are discharged, the hose 19 is wound around the take-up reel 18 for storage to prevent the hose 19 from becoming messy.

[0035] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A circulating blowdown cleaning gas water heater, comprising a water heater body (1), a backwater device main body (2) installed at the end of the water inlet pipe of the water heater body (1), a tee pipe (3) installed at the bottom of the backwater device main body (2), and a backwater pipe (4) and a cold water pipe (5) installed at the end of the tee pipe (3), characterized in that: A hot water delivery pipe (6) is installed inside the water heater body (1). A hot water discharge pipe (10) extending to the outside of the water heater body (1) is provided at the bottom end of the hot water delivery pipe (6). A filter screen (11) is horizontally installed at the top end of the hot water discharge pipe (10). The top of the filter screen (11) and the end of the hot water discharge pipe (10) are on the same horizontal plane. A cleaning component for cleaning impurities on the surface of the filter screen (11) is installed between the top of the hot water discharge pipe (10) and the bottom end of the hot water delivery pipe (6). The cleaning components include a volute (7), an impeller (8), a filter chamber (9), a shaft (12), and a scraper (13). The volute (7) is horizontally installed inside the water heater body (1). The bottom end of the hot water delivery pipe (6) is connected to the inside of the volute (7). The impeller (8) is rotatably installed in the middle of the volute (7). The bottom of the volute (7) is fixed with a filter chamber (9) that is connected to the top end of the hot water discharge pipe (10). The bottom end of the impeller (8) is installed with a shaft (12). The bottom end of the shaft (12) is fixed with a scraper (13) that fits against the top of the filter screen (11). A sewage discharge mechanism (14) is provided at the bottom of the outer side of the filter chamber (9).

2. A gas water heater of the type referred to in claim 1 wherein: The top of the hot water discharge pipe (10) is higher than the horizontal plane at the bottom of the filter chamber (9), and the length of the scraper (13) is greater than the diameter of the hot water discharge pipe (10).

3. A gas water heater of the type referred to in claim 1 or claim 2 wherein: The sewage discharge mechanism (14) includes a pipe receiving trough (15), a straight pipe (16), a switch valve (17), and a hose (19). The pipe receiving trough (15) is located on the side of the water heater body (1). A straight pipe (16) is installed between the bottom of the side of the filter chamber (9) and the pipe receiving trough (15). A switch valve (17) is installed on the straight pipe (16). A hose (19) is installed at one end of the straight pipe (16) inside the pipe receiving trough (15).

4. A cyclically soot cleaning gas water heater as claimed in claim 3 wherein: The connection between the straight pipe (16) and the filter chamber (9) is lower than the horizontal plane at the top of the hot water discharge pipe (10). The bottom of the filter chamber (9) is a slope, and the slope is inclined toward the end of the straight pipe (16).

5. A cyclically soot cleaning gas water heater as claimed in claim 4 wherein: A take-up reel (18) is fixedly installed on the inner side of the take-up groove (15). A groove is provided on the outer side of the take-up reel (18). The hose (19) is wound on the take-up reel (18) and located inside the groove.

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