Water return structure of water heater
By introducing a combined filtration of PP cotton filter layer, ultrafiltration membrane filter layer and activated carbon filter layer into the water heater return structure, the problem of the water heater return structure cannot be filtered is solved, improving the water quality and extending the system life and reducing health risks.
Patent Information
- Application Number
- CN202421901199.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing water heater return structure cannot filter the water, resulting in a decrease in water quality, damage to system performance and an increase in health risks.
Using a combined filter structure of PP cotton filter layer, ultrafiltration membrane filter layer and activated carbon filter layer, multi-stage filtration is achieved through the filter rod shell and connector connected by internal thread and external thread, and remove large particles, tiny particles and bacteria in the water, as well as residual chlorine, odor and pigment.
Improve water quality, prevent impurities from accumulation, protect water heaters and pipeline systems, extend service life, and ensure user health.
Smart Images
Figure CN223121683U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water return of water heaters, and specifically relates to a water return structure of a water heater. Background Art
[0002] The existing water return structure of a water heater cannot filter water, which may lead to a series of problems, including deterioration of water quality, impairment of system performance, and increased health risks for users. A water return system without a filtering function cannot effectively remove impurities, particles, suspended solids, and microorganisms such as bacteria and viruses that may exist in water. Over time, these impurities will accumulate inside the pipeline, not only affecting the clarity and taste of hot water, but also potentially causing corrosion and blockage to the water heater and pipeline system, reducing the service life and performance of the system. Content of the Utility Model
[0003] The purpose of the utility model is to provide a water return structure of a water heater in order to solve the problem that the existing water return structure of a water heater cannot filter water.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A water return structure of a water heater, comprising: an integrated pipe, one end of the integrated pipe is fixedly connected with a water outlet pipe, one end of the water outlet pipe is provided with a first solenoid valve, the other end of the water outlet pipe is connected with a filter pipe through a flange, an inner cavity is provided inside the filter pipe, an internal thread is provided at one end of the inner cavity, a limiting abutting block is fixedly connected at the other end of the inner cavity, a filter rod housing is arranged inside the inner cavity, a reinforcing rod is fixedly connected to one side of the filter rod housing, a filter rod connecting head is fixedly connected to one side of the reinforcing rod, an external thread is provided on the outer side of the filter rod connecting head, a PP cotton filter layer is arranged between the filter rod housing and the filter rod connecting head, an ultrafiltration membrane filter layer is arranged at the other end between the filter rod housing and the filter rod connecting head, an activated carbon filter layer is arranged at the other end between the filter rod housing and the filter rod connecting head, and the PP cotton filter layer, the ultrafiltration membrane filter layer and the activated carbon filter layer are separated by partition plates.
[0005] As a further scheme of the utility model: A heating device is installed above the integrated pipe, a water inlet pipe is arranged above the heating device, a second solenoid valve is installed below the integrated pipe, a water storage bucket is arranged below the second solenoid valve, a first water return pipe is fixedly connected to one side of the water storage bucket, a water pump is installed at one end of the first water return pipe, a second water return pipe is arranged at one end of the water pump, and the other end of the second water return pipe is fixedly connected to one side of the water inlet pipe.
[0006] As a further scheme of the utility model: The internal thread is adapted to and thread-connected with the external thread, and the number of the reinforcing rods is set to four groups, which are symmetrically arranged around the middle of the filter rod housing and the filter rod connecting head.
[0007] As a further solution of the present utility model: Two groups of partition plates are provided and installed at the separation positions between the PP cotton filter layer, the ultrafiltration membrane filter layer, and the activated carbon filter layer.
[0008] As a further solution of the present utility model: The second solenoid valve is connected to the integrated pipe and the water storage bucket through a flange.
[0009] Compared with the prior art, the beneficial effects of the present utility model are:
[0010] In the present utility model, the PP cotton filter layer is used for preliminary filtration to remove large particulate impurities in the water. Then, it passes through the ultrafiltration membrane filter layer to further remove tiny particles and bacteria in the water. Finally, the water flows through the activated carbon filter layer to remove residual chlorine, odor, and pigments in the water, improving the water quality. Then, it is discharged through the water outlet pipe, solving the problem that the existing water return structure of the water heater cannot filter the water. Description of the Drawings
[0011] Figure 1 is the overall structural schematic diagram of a water return structure of a water heater according to the present utility model;
[0012] Figure 2 is the internal structural schematic diagram of the filter pipe in a water return structure of a water heater according to the present utility model;
[0013] Figure 3 is the structural schematic diagram of a filter rod in a water return structure of a water heater according to the present utility model;
[0014] Figure 4 is the internal structural schematic diagram of the filter rod in a water return structure of a water heater according to the present utility model.
[0015] In the figure: 1, integrated pipe; 2, water outlet pipe; 3, first solenoid valve; 4, filter pipe; 5, inner cavity; 6, internal thread; 7, limiting abutting block; 8, filter rod housing; 9, reinforcing rod; 10, filter rod connector; 11, external thread; 12, PP cotton filter layer; 13, ultrafiltration membrane filter layer; 14, activated carbon filter layer; 15, partition plate; 16, heating device; 17, water inlet pipe; 18, second solenoid valve; 19, water storage bucket; 20, first water return pipe; 21, water pump; 22, second water return pipe. Detailed Embodiments
[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0017] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and 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 therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following will describe the embodiments according to the overall structure of the present utility model.
[0018] Refer to Figures 1 to 4, in the embodiment of the present utility model, a water return structure of a water heater includes: an integrated pipe 1, one end of the integrated pipe 1 is fixedly connected to a water outlet pipe 2, one end of the water outlet pipe 2 is provided with a first solenoid valve 3, the other end of the water outlet pipe 2 is connected to a filter pipe 4 through a flange, an inner cavity 5 is formed inside the filter pipe 4, an internal thread 6 is provided at one end of the inner cavity 5, a limiting abutting block 7 is fixedly connected to the other end of the inner cavity 5, a filter rod housing 8 is arranged inside the inner cavity 5, a reinforcing rod 9 is fixedly connected to one side of the filter rod housing 8, a filter rod connector 10 is fixedly connected to one side of the reinforcing rod 9, an external thread 11 is provided on the outer side of the filter rod connector 10, a PP cotton filter layer 12 is arranged between the filter rod housing 8 and the filter rod connector 10, an ultrafiltration membrane filter layer 13 is arranged at the other end between the filter rod housing 8 and the filter rod connector 10, an activated carbon filter layer 14 is arranged at the other end between the filter rod housing 8 and the filter rod connector 10, the PP cotton filter layer 12, the ultrafiltration membrane filter layer 13 and the activated carbon filter layer 14 are separated by partition plates 15, the internal thread 6 is adapted to and threadedly connected with the external thread 11, the number of the reinforcing rods 9 is set to four groups, and they are symmetrically arranged around the middle of the filter rod housing 8 and the filter rod connector 10, the number of the partition plates 15 is set to two groups, and they are installed at the separation positions between the PP cotton filter layer 12, the ultrafiltration membrane filter layer 13 and the activated carbon filter layer 14, the filter rod connector 10 is tightly connected with the internal thread 6 inside the filter pipe 4 through the external thread 11 on its outer side to form a stable filter unit, and it is convenient to disassemble and clean and replace the internal PP cotton filter layer 12, ultrafiltration membrane filter layer 13 and activated carbon filter layer 14. When the temperature is high enough, the second solenoid valve 18 is closed and the first solenoid valve 3 is opened. The water flow enters the inner cavity 5 through the filter pipe 4, and is first preliminarily filtered by the PP cotton filter layer 12 to remove large particle impurities in the water, then passes through the ultrafiltration membrane filter layer 13 to further remove tiny particles and bacteria in the water, and finally the water flow passes through the activated carbon filter layer 14 to remove residual chlorine, odor and pigments in the water, improve the water quality, and then is discharged through the water outlet pipe 2.
[0019] Refer to Figure 1 , a heating device 16 is installed above the integrated pipe 1, a water inlet pipe 17 is arranged above the heating device 16, a second solenoid valve 18 is installed below the integrated pipe 1, a water storage bucket 19 is arranged below the second solenoid valve 18, a first water return pipe 20 is fixedly connected to one side of the water storage bucket 19, a water pump 21 is installed at one end of the first water return pipe 20, a second water return pipe 22 is arranged at one end of the water pump 21, and the other end of the second water return pipe 22 is fixedly connected to one side of the water inlet pipe 17. The second solenoid valve 18 connects the integrated pipe 1 and the water storage bucket 19 through a flange. When the system is started, the water inlet pipe 17 starts to supply water, the heating device 16 starts to work, heats the water to the set temperature. The cold water that initially does not reach the temperature enters the water storage bucket 19 through the integrated pipe 1, the water pump 21 starts to work, extracts cold water from the water storage bucket 19 through the first water return pipe 20, and the cold water flows back to the water inlet pipe 17 through the second water return pipe 22 and re-enters the filtering and heating process to realize the recycling of hot water.
[0020] The working principle of the present utility model is as follows: Before the system starts, both the first solenoid valve 3 and the second solenoid valve 18 are in the closed state, the heating device 16 is not working, and the filter rod connector 10 is tightly connected to the internal thread 6 inside the filter tube 4 through the external thread 11 on its outer side to form a stable filter unit, which is convenient for disassembly to clean and replace the internal PP cotton filter layer 12, ultrafiltration membrane filter layer 13, and activated carbon filter layer 14. When the system starts, the water inlet pipe 17 starts to supply water, and the heating device 16 starts to work to heat the water to the set temperature. The cold water that initially fails to reach the temperature enters the water storage bucket 19 through the integrated pipe 1. When the temperature is sufficient, the second solenoid valve 18 closes, and the first solenoid valve 3 opens. The water flow passes through the filter tube 4 and enters the inner cavity 5. First, it is preliminarily filtered through the PP cotton filter layer 12 to remove large particle impurities in the water. Then, it passes through the ultrafiltration membrane filter layer 13 to further remove tiny particles and bacteria in the water. Finally, the water flow passes through the activated carbon filter layer 14 to remove residual chlorine, odor, and pigment in the water, improving the water quality, and then is discharged through the water outlet pipe 2. The water pump 21 starts to work, extracts cold water from the water storage bucket 19 through the first return pipe 20, and the cold water flows back to the water inlet pipe 17 through the second return pipe 22 and re-enters the filtration and heating process to realize the recycling of hot water. The entire system realizes the automatic control of hot water supply, filtration, heating, and return water circulation by controlling the opening and closing of the first solenoid valve 3 and the second solenoid valve 18, as well as the start and stop of the heating device 16 and the water pump 21.
[0021] The above-mentioned is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.
Claims
1. A return water structure of a water heater, characterized in that, Including: An integrated pipe (1), one end of the integrated pipe (1) is fixedly connected with a water outlet pipe (2), one end of the water outlet pipe (2) is provided with a first solenoid valve (3), the other end of the water outlet pipe (2) is connected with a filter pipe (4) through a flange, an inner cavity (5) is formed inside the filter pipe (4), an internal thread (6) is provided at one end of the inner cavity (5), a limiting abutting block (7) is fixedly connected to the other end of the inner cavity (5), a filter rod housing (8) is arranged inside the inner cavity (5), a reinforcing rod (9) is fixedly connected to one side of the filter rod housing (8), a filter rod connector (10) is fixedly connected to one side of the reinforcing rod (9), an external thread (11) is arranged on the outer side of the filter rod connector (10), a PP cotton filter layer (12) is arranged between the filter rod housing (8) and the filter rod connector (10), an ultrafiltration membrane filter layer (13) is arranged at the other end between the filter rod housing (8) and the filter rod connector (10), an activated carbon filter layer (14) is arranged at the other end between the filter rod housing (8) and the filter rod connector (10), and the PP cotton filter layer (12), the ultrafiltration membrane filter layer (13) and the activated carbon filter layer (14) are separated by partition plates (15).
2. The return water structure of a water heater according to claim 1, characterized in that, A heating device (16) is installed above the integrated pipe (1), a water inlet pipe (17) is arranged above the heating device (16), a second solenoid valve (18) is installed below the integrated pipe (1), a water storage bucket (19) is arranged below the second solenoid valve (18), a first return pipe (20) is fixedly connected to one side of the water storage bucket (19), a water pump (21) is installed at one end of the first return pipe (20), a second return pipe (22) is arranged at one end of the water pump (21), and the other end of the second return pipe (22) is fixedly connected to one side of the water inlet pipe (17).
3. The return water structure of a water heater according to claim 1, characterized in that The internal thread (6) is adapted to and thread-connected with the external thread (11), and the number of the reinforcing rods (9) is set to four groups, which are symmetrically arranged around the middle of the filter rod housing (8) and the filter rod connector (10).
4. A return water structure of a water heater according to claim 1, characterized in that The number of the partition plates (15) is set to two groups, and they are installed at the separation positions between the PP cotton filter layer (12), the ultrafiltration membrane filter layer (13) and the activated carbon filter layer (14).
5. The return water structure of a water heater according to claim 2, characterized in that, The second solenoid valve (18) is connected to the integrated pipe (1) and the water storage bucket (19) through a flange.