CN102313355A - Reflux water-saving device of water heater - Google Patents

Abstract

The invention discloses a water heater reflux water-saving device, which comprises a water storage tank, a water inlet pipe of the water storage tank, a water outlet pipe of the water storage tank and a pneumatic transmission system. One end of the water inlet pipe of the water storage tank is connected with the hot water pipe of the water heater, and the other end is connected with the water storage tank One end of the outlet pipe of the water storage tank is connected with the water mixing valve of the water heater, and the other end is connected with the water storage tank; the pneumatic transmission system is connected with the water storage tank, and the water storage tank is also provided with a vent valve. The device of the invention has low cost and can be mass-produced; it is widely used and can be used in hotels, public facilities and general households, and is easy to popularize; the energy dissipation is small and meets the current requirements of "energy saving and emission reduction".

Description

Water heater back flow water saving device

technical field

The invention belongs to the field of daily necessities, and relates to a sanitary product, in particular to a water heater backflow water-saving device.

Background technique

Because of its ease of use, water heaters have become one of the daily life electrical equipment in hotels, public facilities and families. However, after the water heater has boiled hot water, when the hot water switch is turned on for the first time, the shower head will not immediately emit hot water, but first emit cold water, and then hot water will emerge after a period of time. In this way, during use, especially in winter, cold water splashing on the body will give people a biting cold discomfort, especially for children, pregnant women, and the elderly, the discomfort caused by this stimulation is stronger; at the same time, when using Also can increase a lot of troubles to the user in the process; What's more, most of the time, this part of water is let off for nothing, causing great waste of domestic water. For the sake of saving water, people expect a good way to solve this problem very much.

Although there are many researches on water heater water-saving devices to continuously improve the technology, for example, the utility model patent of Chinese patent No. 201020186915.3 uses n-shaped bends and water storage tanks to realize the collection of this part of cold water, and Chinese patent No. 200710032339. X's invention patent uses a water pump to realize the return of cold water, but these researches have the disadvantages of increasing the complexity of the system, high cost, and not easy to promote. requirements are not met.

Contents of the invention

The object of the present invention is to provide a water heater backflow water saving device, which solves the problem that hot water needs to wait until the cold water in the water heater pipeline runs out every time the water heater is used, and this part of cold water is usually wasted.

Another object of the present invention is to provide a return water saving device for a water heater. The water saving device of the present invention can be installed without destroying the original functions of the shower, and users can choose to use it according to their needs.

Another object of the present invention is to provide a water heater backflow water-saving device, which solves the problems existing in existing water-saving devices such as the need to provide additional power equipment (such as a water pump) and high energy consumption.

For achieving above object, the solution that the present invention adopts is:

A water heater backflow water-saving device, which includes a water storage tank, a water inlet pipe of the water storage tank, a water outlet pipe of the water storage tank and a pneumatic transmission system, one end of the water storage tank inlet pipe is connected with the hot water pipe of the water heater, and the other end is connected with the water storage tank; One end of the water pipe is connected with the water mixing valve of the water heater, and the other end is connected with the water storage tank; the pneumatic transmission system is connected with the water storage tank, and the water storage tank is also provided with a vent valve.

Further, the pneumatic transmission system includes a compressed air pipe, a pump cylinder, a piston, a piston thrust device, an air intake pipe and an air intake control valve. One end of the compressed air pipe communicates with the pump cylinder, and the other end connects with the water storage tank; one end of the air intake pipe communicates with the atmosphere, The other end is connected with the pump cylinder, and the intake pipe is provided with an air intake control valve; the pump cylinder is provided with a piston, and the top of the piston is connected with the piston thrust device.

The piston thrust device includes a connecting rod and a handle. One end of the connecting rod is connected to the piston, and the other end extends out of the pump cylinder through a hole provided on the top of the pump cylinder and is connected to the handle.

The compressed air pipe is provided with a compressed air control valve.

Due to the adoption of the above scheme, the present invention has the following features: the present invention solves the problem that hot water flows out only after the cold water in the pipeline of the water heater runs out every time the water heater is used, and this part of cold water is usually wasted; And there is no need to destroy the original shower equipment. The device of the invention has low cost and can be mass-produced; it is widely used and can be used in hotels, public facilities and general households, and is easy to popularize; the energy dissipation is small and meets the current requirements of "energy saving and emission reduction".

Description of drawings

Fig. 1 is a schematic structural view of the backflow water saving device of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

As shown in Fig. 1, the water heater backflow water-saving device of the present invention is realized by adding a water storage tank and its inlet and outlet pipes and air pressure transmission system on the basis of the original shower mixing valve system. The water mixing valve 1 of the water heater is connected with a hot water pipe 2 and a cold water pipe 3 respectively. The water heater reflux water saving device of the present invention comprises a water storage tank 6, a water storage tank inlet pipe 4, a water storage tank outlet pipe 7 and a pneumatic transmission system, one end of the water storage tank inlet pipe 4 is connected to the hot water pipe 2, and the other end is connected to the water storage tank 6; One end of the outlet pipe 7 of the water storage tank is connected with the water mixing valve 1, and the other end is connected with the water storage tank 6. The water inlet pipe 4 of the water storage tank is provided with a water inlet control valve 5 , and the water outlet pipe 7 of the water storage tank is provided with a water outlet one-way control valve 8 . The pneumatic transmission system is located above the water storage tank 6 and communicates with the water storage tank 6 to provide water outlet pressure for the water storage tank. The water storage tank 6 is also provided with a vent valve 17 . The device of the present invention can be installed in the wall above the water mixing valve 1, and the volume of the water storage tank 6 can be customized according to the pipeline conditions. After the cold water enters the water storage tank 6, its energy is less than that of the water in the pipeline, and the pneumatic transmission system is used to increase the energy of the water in the water storage tank, and the water stored in the water storage tank 6 is returned to the water mixing valve 1.

Pneumatic transmission system comprises compressed air pipe 9, compressed air control valve 10, pump cylinder 11, piston 12, handle 13, connecting rod 14, intake pipe 15 and intake control valve 16, one end of compressed air pipe 9 communicates with pump cylinder 11, and the other end communicates with pump cylinder 11. The water storage tank 6 is connected; one end of the air intake pipe 15 communicates with the atmosphere, and the other end is connected with the pump cylinder 11; the air intake pipe 15 and the air pressure pipe 9 are respectively provided with an air intake control valve 16 and an air pressure control valve 10; the pump cylinder 11 is provided with a piston 12. The top of the piston 12 is fixedly connected with the connecting rod 14, and the connecting rod 14 extends out of the pump cylinder 11 through the hole opened on the top of the pump cylinder 11, and is connected with the handle 13.

The use process of a cold water saving device for a water heater includes four processes of water intake into the water storage tank, inflation, water discharge from the water storage tank, and deflation. The following four processes are explained in detail:

A. Before taking a formal shower, open the water inlet control valve 5 of the water storage tank 6, let the cold water in the hot water pipe 2 enter the water storage tank 6, and close the water inlet control valve 5 after the water intake is completed;

B constantly pulls the handle 13 several times by hand, and utilizes the pneumatic transmission system to increase energy to the water in the water storage tank 6;

C. Open the shower head, adjust the water temperature to a suitable temperature, open the water outlet one-way control valve 8 of the water storage tank 6, and let the cold water in the water storage tank 6 enter the water mixing valve 1 for reuse.

D. After the shower is over, close the water outlet one-way control valve 8, and open the air release control valve 17, and close the air release control valve 17 after releasing the high-pressure gas in the water storage tank 6.

The above description of the embodiments is for those of ordinary skill in the art to understand and apply the present invention. It is obvious that those skilled in the art can easily make various modifications to these embodiments, and apply the general principles described here to other embodiments without creative efforts. Therefore, the present invention is not limited to the embodiments herein. Improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should fall within the protection scope of the present invention.

Claims (4)

1. A water heater back flow water saving device, characterized in that: it comprises a water storage tank, a water storage tank inlet pipe, a water storage tank outlet pipe and a pneumatic transmission system, one end of the water storage tank inlet pipe is connected with the hot water pipe of the water heater, and the other end is connected with the water storage tank The water tank is connected; one end of the outlet pipe of the water storage tank is connected with the water mixing valve of the water heater, and the other end is connected with the water storage tank; the pneumatic transmission system is connected with the water storage tank, and the water storage tank is also provided with a vent valve. 2. The water heater reflux water-saving device as claimed in claim 1, characterized in that: the pneumatic transmission system includes a compressed air pipe, a pump cylinder, a piston, a piston thrust device, an air intake pipe and an air intake control valve, and one end of the compressed air pipe is connected to the pump. The cylinder is connected, and the other end is connected with the water storage tank; one end of the air intake pipe is connected with the atmosphere, and the other end is connected with the pump cylinder, and the air intake pipe is provided with an air intake control valve; the pump cylinder is provided with a piston, and the top of the piston is connected with the piston thrust device. 3. The water heater backflow water-saving device according to claim 2, characterized in that: the piston thrust device includes a connecting rod and a handle, one end of the connecting rod is connected with the piston, and the other end extends out of the pump through the hole opened on the top of the pump cylinder. Cylinder, and connected with the handle. 4. The water heater return water saving device according to claim 2, characterized in that: said compressed air pipe is provided with an compressed air control valve.