Water economizer and water heater system

Abstract

The utility model provides a water economizer and a water heater system, which comprise a water economizer, a water return pipe and a hot water pipe, the water economizer is arranged on the hot water pipe, and the water economizer, the hot water pipe and the water return pipe are sequentially communicated to form a loop; the water economizer comprises a nozzle, a suction chamber and a diffusion pipe, a water inlet of the nozzle is a straight section, a water outlet of the nozzle is a contraction section, a water inlet of the diffusion pipe is an expansion section and is communicated with the water outlet of the nozzle, a water outlet of the diffusion pipe is a straight section, and the water inlet of the nozzle and the water outlet of the diffusion pipe are respectively communicated with the hot water pipe; the suction chamber is arranged on the water outlet of the nozzle in a sleeving mode and extends outwards to form an inclined water inlet, the water inlet of the suction chamber is communicated with the output end of the water return pipe, and a water outlet is formed in the inner side wall of the suction chamber and communicated with the water outlet of the nozzle. Negative pressure is formed when water flows through the water economizer, water in the water return pipe is sucked into the water economizer, the function of circulating water flow is achieved, and therefore the purposes of saving water and reducing energy consumption are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and particularly to a water-saving device and a water heater system. Background Art

[0002] With the rapid development of social economy, the urban population has increased sharply, and the water use technology is relatively backward, resulting in a large amount of water resource waste; moreover, water resource pollution is becoming more and more serious, making the available water resources less and less, so water conservation has reached an urgent stage.

[0003] In a conventional household hot water system, the water use point is far from the water heater, and the water in the pipeline from the water heater to the water use point is at room temperature, which does not meet the temperature requirement for use. Before the water at the water use point flows out at a temperature meeting the use requirement, this part of water directly flows into the drainage system, resulting in water resource waste.

[0004] The existing Chinese patent with the publication number CN207610415U discloses a household water heater water-saving and return water reuse intelligent system, including a water heater and a shower pipe. The water heater is connected with a water inlet pipe and a water outlet pipe. The water outlet end of the water outlet pipe is connected to the water inlet end of the shower pipe. The water inlet end of the shower pipe is also connected with a cold water pipe. A handle for controlling the shower switch is installed on the shower pipe; a first solenoid valve is arranged on the cold water pipe. Along the water flow direction in the water outlet pipe, a temperature sensor and a second solenoid valve are sequentially arranged at the water outlet end of the water outlet pipe; a return water branch pipe is connected to the water outlet pipe between the temperature sensor and the second solenoid valve, and the other end of the return water branch pipe is connected to the water inlet pipe. Along the water flow direction in the return pipe, a third solenoid valve and a pipeline pump are sequentially arranged on the return water branch pipe.

[0005] In the prior art, in places with high water use requirements, a return water system is generally set up to avoid water waste. However, this system needs to be equipped with a set of return water pumps on the return water pipe and needs to operate frequently to ensure that the water temperature in the pipeline meets the water use requirements, resulting in high operation costs.

[0006] Therefore, the inventor believes that it is necessary to provide a water-saving device and a water heater system. Through the water-saving device installed at the water outlet of the water heater, the water in the pipeline flows out only after reaching an appropriate temperature, avoiding water resource waste, and there is no need to set up a circulation pump, saving operation costs, and being convenient, economical and practical. Summary of the Utility Model

[0007] Aiming at the defects in the prior art, the purpose of the utility model is to provide a water-saving device and a water heater system.

[0008] According to a water-saving device provided by the utility model, it includes a water-saving device, a return water pipe and a hot water pipe. The water-saving device is arranged on the hot water pipe, and the water-saving device, the hot water pipe and the return water pipe are sequentially connected to form a loop;

[0009] The water-saving device includes: a nozzle, a suction chamber, and a diffuser tube. The water inlet of the nozzle is a straight section, the water outlet of the nozzle is a contraction section, the water inlet of the diffuser tube is a divergent section and is connected to the water outlet of the nozzle, the water outlet of the diffuser tube is a straight section, and the water inlet of the nozzle and the water outlet of the diffuser tube are respectively connected to the hot water pipe;

[0010] The suction chamber is sleeved on the water outlet of the nozzle. The suction chamber extends outward to form an inclined water inlet. The water inlet of the suction chamber is connected to the output end of the return water pipe, and the inner side wall of the suction chamber forms a water outlet and is connected to the water outlet of the nozzle.

[0011] Preferably, the contraction angle of the contraction section of the nozzle is 10° to 30°.

[0012] Preferably, the inner diameter of the straight section of the diffuser tube is the same as the inner diameter of the straight section of the nozzle.

[0013] Preferably, the divergence angle of the divergent section of the diffuser tube is 5°.

[0014] Preferably, a cavity is formed between the inner side wall of the suction chamber and the outer side wall of the contraction section of the nozzle. The length range of the cavity is the length of the contraction section plus 0.5 to 0.9 times the diameter of the water outlet of the nozzle.

[0015] Preferably, the inclination degree of the water inlet of the suction chamber ranges from 45° to 60°.

[0016] Preferably, the inner diameter of the water inlet of the suction chamber is half of the diameter of the water inlet of the nozzle.

[0017] According to the water heater system provided by the present invention, it is characterized in that the above water-saving device is adopted, and it further includes: a water point valve, a water heater. The input end of the hot water pipe is connected to the water heater, the output end of the hot water pipe is connected to the water point valve, and a temperature detector is arranged upstream of the water point valve.

[0018] Preferably, a return water pipe valve is arranged on the return water pipe, and the temperature detector is arranged downstream of the output end of the return water pipe.

[0019] Preferably, a control device is further included, and the control device is respectively connected to the temperature detector, the water point valve, and the return water pipe valve.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] When the pressure water flows through the nozzle in the present utility model, due to the reduction of the nozzle outlet and the inlet of the diffuser tube, the water flow velocity greatly increases, forming a negative pressure in the suction chamber. Under the action of the negative pressure, the water in the return pipe is sucked into the suction chamber. After mixing with the water coming out of the nozzle, under the action of pressure, it enters the diffuser tube, achieving the effect of circulating water flow. The structure is simple, the installation and maintenance are convenient, it can achieve the purpose of saving water, and there is no need to install a circulation pump, which helps to reduce energy consumption. Brief Description of the Drawings

[0022] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present utility model will become more apparent:

[0023] Figure 1 It is a schematic structural diagram mainly showing the water heater system of the present utility model;

[0024] Figure 2 It is a schematic structural diagram mainly showing the water-saving device of the present utility model;

[0025] Figure 3 It is a cross-sectional view mainly showing the nozzle of the present utility model;

[0026] Figure 4 It is a cross-sectional view mainly showing the suction chamber of the present utility model;

[0027] Figure 5 It is a cross-sectional view mainly showing the diffuser tube of the present utility model.

[0028] Reference Signs:

[0029] Water point valve 1, water heater 2, water-saving device 3

[0030] Temperature detector 4, return pipe valve 5, return pipe 6

[0031] Hot water pipe 7, nozzle 31, suction chamber 32

[0032] Diffuser tube 33 Detailed Embodiment

[0033] The present utility model will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present utility model, but do not limit the present utility model in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several changes and improvements can still be made. These all belong to the protection scope of the present utility model.

[0034] Embodiment 1

[0035] As Figures 1-5As shown in the figure, a water-saving device provided by the present utility model includes: a water-saving device 3, a return pipe 6, and a hot water pipe 7. The water-saving device 3 is arranged on the hot water pipe 7. The water-saving device 3, the hot water pipe 7, and the return pipe 6 are sequentially connected and communicated to form a loop; the water-saving device 3 includes: a nozzle 31, a suction chamber 32, and a diffuser pipe 33. The water inlet of the nozzle 31 is a straight section, and the water outlet of the nozzle 31 is a contraction section. The water inlet of the diffuser pipe 33 is an expansion section and is communicated with the water outlet of the nozzle 31. The water outlet of the diffuser pipe 33 is a straight section. The water inlet of the nozzle 31 and the water outlet of the diffuser pipe 33 are respectively communicated with the hot water pipe 7; the suction chamber 32 is sleeved on the water outlet of the nozzle 31. The suction chamber 32 extends outward to form an inclined water inlet. The water inlet of the suction chamber 32 is communicated with the output end of the return pipe 6. The inner side wall of the suction chamber 32 forms a water outlet and is communicated with the water outlet of the nozzle 31.

[0036] When the pressurized water flows through the nozzle 31, due to the reduction of the pipe orifice of the water outlet of the nozzle 31 and the water inlet of the diffuser pipe 33, the flow rate of the water greatly increases, and a negative pressure is formed in the suction chamber 32. Under the action of the negative pressure, the water in the return pipe 6 is sucked into the suction chamber 32. After being mixed with the water coming out of the nozzle 31, under the action of pressure, it enters the diffuser pipe 33 to achieve the effect of circulating water flow.

[0037] The inner diameter of the straight section of the nozzle 31 is generally determined according to the calculation of the hot water volume of the engineering project. The length of the contraction section of the nozzle 31 is calculated according to the water inlet diameter, water outlet diameter, and contraction angle of the nozzle 21. The contraction angle of the contraction section of the nozzle 31 is 10° to 30°.

[0038] The inner diameter of the straight section of the diffuser pipe 33 is the same as that of the straight section of the nozzle 31. The length of the expansion section of the diffuser pipe 33 is calculated according to the water inlet diameter, water outlet diameter, and expansion angle of the diffuser pipe 33. The diffusion angle of the expansion section of the diffuser pipe 33 is preferably 5°.

[0039] A cavity is formed between the inner side wall of the suction chamber 32 and the outer side wall of the contraction section of the nozzle 31. The length range of the cavity is the length of the contraction section plus 0.5 to 0.9 times the water outlet diameter of the nozzle 31. The outer diameter of the cavity is related to the material processing thickness.

[0040] The inclination degree range of the water inlet of the suction chamber 32 is 45° to 60°. The length of the water inlet of the suction chamber 32 is related to the engineering installation. The inner diameter of the water inlet is determined according to the engineering return water volume, and is generally half of the water inlet diameter of the nozzle 31.

[0041] The working principle of the water-saving device 3 of this application is as follows: Water flow with a certain pressure is ejected at high speed through the nozzle 31, converting the pressure energy into kinetic energy, creating a vacuum in the outlet area of the nozzle 31, thereby sucking the water in the return pipe 6 into the suction chamber 32. The two water flows are mixed and energy-exchanged in the diffuser pipe 33, and the kinetic energy is restored to pressure energy, and is discharged from the diffuser pipe 33 at a certain pressure.

[0042] This application utilizes the fact that water can form a negative pressure when flowing through the water-saving device 3, and uses the negative pressure to suck the water in the return pipe 6 into the water-saving device 3, which can circulate continuously until water at a suitable temperature flows out. By applying physical principles, the water in the pipeline circulates, achieving the effect of increasing the water temperature in the pipeline. The structure is simple, the installation and maintenance are convenient, and there is no need to install a circulation pump, which helps to reduce energy consumption.

[0043] Embodiment 2

[0044] According to a water heater system provided by the present utility model, adopting the water-saving device of Embodiment 1, it further includes: a water point valve 1, a water heater 2. The input end of the hot water pipe 7 is connected to the water heater 2, the output end of the hot water pipe 7 is connected to the water point valve 1, and a temperature detector 4 is provided upstream of the water point valve 1.

[0045] A return pipe valve 5 is provided on the return pipe 6, and the temperature detector 4 is provided downstream of the output end of the return pipe 6.

[0046] It further includes a control device, and the control device is respectively connected to the temperature detector 4, the water point valve 1, and the return pipe valve 5.

[0047] The working process of this application is as follows: When the water point valve 1 is opened, the temperature detector 4 detects the water point temperature. If the water point temperature does not meet the usage requirements, the water point valve 1 is closed, and the return pipe valve 5 on the return pipe 6 is opened. When the water flow in the hot water pipe passes through the water-saving device 3, a negative pressure is formed, sucking the water in the return pipe 6 into the water-saving device, mixing with the hot water from the water heater 2, increasing the water temperature in the pipeline to meet the usage requirements, and avoiding water waste.

[0048] Compared with the current conventional household hot water system, installing the water-saving device 3 can utilize physical principles to make the water in the pipeline circulate, achieving the effect of increasing the water temperature in the pipeline. It can not only achieve the purpose of saving water, but also does not require a circulation pump, reducing energy consumption and saving operating costs.

[0049] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application 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 to the present application.

[0050] The specific embodiments of the present utility model have been described above. It should be understood that the present utility model is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present utility model. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A water-saving device, characterized in that, Including: A water-saving device (3), a return pipe (6), and a hot water pipe (7). The water-saving device (3) is arranged on the hot water pipe (7). The water-saving device (3), the hot water pipe (7), and the return pipe (6) are sequentially connected in communication to form a loop. The water-saving device (3) includes: a nozzle (31), a suction chamber (32), and a diffuser pipe (33). The water inlet of the nozzle (31) is a straight section, and the water outlet of the nozzle (31) is a contraction section. The water inlet of the diffuser pipe (33) is an expansion section and is communicated with the water outlet of the nozzle (31). The water outlet of the diffuser pipe (33) is a straight section. The water inlet of the nozzle (31) and the water outlet of the diffuser pipe (33) are respectively communicated with the hot water pipe (7). The suction chamber (32) is sleeved on the water outlet of the nozzle (31). The suction chamber (32) extends outward to form an inclined water inlet. The water inlet of the suction chamber (32) is communicated with the output end of the return pipe (6). The inner side wall of the suction chamber (32) forms a water outlet and is communicated with the water outlet of the nozzle (31).

2. The water-saving device according to claim 1, characterized in that, The contraction angle of the contraction section of the nozzle (31) is 10° to 30°.

3. The water-saving device according to claim 1, characterized in that, The inner diameter of the straight section of the diffuser pipe (33) is the same as that of the straight section of the nozzle (31).

4. The water-saving device according to claim 1, wherein The diffusion angle of the expansion section of the diffuser pipe (33) is 5°.

5. The water-saving device according to claim 1, characterized in that, A cavity is formed between the inner side wall of the suction chamber (32) and the outer side wall of the contraction section of the nozzle (31). The length range of the cavity is the length of the contraction section plus 0.5 to 0.9 times the diameter of the water outlet of the nozzle (31).

6. The water-saving device according to claim 1, wherein The inclination degree range of the water inlet of the suction chamber (32) is 45° to 60°.

7. The water-saving device according to claim 1, characterized in that, The inner diameter of the water inlet of the suction chamber (32) is half of the diameter of the water inlet of the nozzle (31).

8. A water heater system, characterized in that, Adopting the water-saving device according to any one of claims 1-7, further including: a water usage point valve (1), a water heater (2). The input end of the hot water pipe (7) is communicated with the water heater (2), the output end of the hot water pipe (7) is communicated with the water usage point valve (1), and a temperature detector (4) is arranged upstream of the water usage point valve (1).

9. The water heater system according to claim 8, characterized in that, A return pipe valve (5) is arranged on the return pipe (6), and the temperature detector (4) is arranged downstream of the output end of the return pipe (6).

10. The water heater system according to claim 9, characterized in that, Further including a control device, and the control device is respectively connected to the temperature detector (4), the water usage point valve (1), and the return pipe valve (5).

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