CN115218009A

CN115218009A - Zero-cold-water shower faucet without return pipe

Info

Publication number: CN115218009A
Application number: CN202210952554.6A
Authority: CN
Inventors: 唐秀辉; 唐宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2022-10-21

Abstract

The invention relates to a return pipe-free zero-cold-water shower faucet.A cold-hot water one-way closed-loop circulating channel is established in the shower faucet, and the cold-hot water one-way closed-loop circulating channel is quickly deformed when the temperature is calibrated by utilizing the temperature memory characteristic of a temperature memory spring (or a thermal expansion valve), so that the moving position of a piston is controlled, and the flow of the cold-hot water in a pipeline is automatically stopped. The hot water return circulation is realized under the condition that a return pipeline is not laid independently, and the building construction cost is saved. When hot water reaches the water consumption position, the water heater automatically stops, achieves 'instant heating when opening', does not need to wait for water drainage, avoids water, electricity and gas resource waste, and improves life experience. The return-pipe-free zero-cold-water shower faucet comprises a faucet body, a water mixing valve core, a temperature cut-off one-way valve, a water flow generator, a display controller and the like.

Description

Zero-cold-water shower faucet without return pipe

Technical Field

The invention relates to the technical field of building water supply, in particular to a return pipe-free zero-cold-water shower faucet for a hot water return system.

Background

At present, the indoor hot water system of building adopts traditional dendritic water supply mode more, promptly at the bifurcation again branching, and return water circulating line does not have laid in a lot of buildings, need to let the cold water of water heater between to the shower tap fall when using hot water at every turn, uses and experiences not good, extravagant water resource. Taking a 120 square meter house as an example, the distance between the farthest water using position and the pipeline of the water heater is about 30 meters, and when hot water is used, the water needs to be discharged for 1 to 2 minutes before hot water is available. For buildings with return water circulating pipelines, most of buildings only perform hot water circulation at the farthest water using position, hot water circulation cannot be performed at each hot water using position, and hot water can be discharged only by discharging the cold water, so that the buildings cannot be heated immediately after being opened. The existing water return systems adopt a timing mode to carry out hot water circulation, and over-circulation and under-circulation are easy to occur when the water using conditions are changed, so that hot water flows into a cold water pipeline or cold water still needs to be discharged.

According to the invention, the return-pipe-free zero-cold-water shower faucet is used for communicating the hot water pipeline and the cold water pipeline at each water using position in a one-way mode, so that the water channel realizes one-way closed-loop circulation, hot water is automatically stopped when reaching the return-pipe-free zero-cold-water shower faucet, the situations of over-circulation and under-circulation are avoided, and each shower faucet can be instantly opened and heated.

By implementing the invention, hot water return circulation can be realized without independently laying a return pipeline, and each household saves the building construction and installation cost by at least 4000 yuan; zero cold water shower faucet of wet return pipe is exempted from through the installation, makes every delivery port all have hot water supply, need not discharge the cold water of reserving in the hot water pipeline, opens promptly and heats promptly, promotes life and uses experience, and water, electricity, gas resource are saved to 120 square meters houses, and the water heater is to about 30 meters estimation of farthest end outlet distance, and every family can save 10 tons of running water, gas 30 or electric energy more than 200 degrees at least annually, and energy-concerving and environment-protective, economic benefits is obvious.

Disclosure of Invention

The invention aims to improve the existing indoor hot water circulating system of the building, realize return water circulation without laying a return water pipeline and changing the layout of the existing water pipes, automatically stop circulation when hot water reaches a water using position, realize that the hot water using position of each room is opened and heated immediately, and avoid discharging cold water in the pipeline, thereby saving water, electricity and gas resources and bringing comfortable use experience.

The purpose of the invention is realized by the following technical scheme.

Drawings

FIG. 1 is an external view of a return pipe-free zero-cold water shower faucet

FIG. 2 is an exploded view of a return-pipe-free zero-cold-water shower faucet

FIG. 3 is an external view of an automatic temperature cut-off check valve;

FIG. 4 is a cross-sectional view of a return-pipe-free zero-cold-water shower faucet

FIG. 5 is an exploded view of the automatic temperature cut-off check valve;

FIG. 6 is a cross-sectional view of an automatic temperature shutoff check valve;

FIG. 7 is a piping diagram of the embodiment

FIG. 8 is a state diagram of an automatic temperature cut-off check valve cycle;

fig. 9 is a diagram of the cut-off state of the automatic temperature cut-off check valve.

Detailed Description

The water flow stop valve is composed of a faucet handle 1, a water mixing valve core 2, an automatic temperature stop one-way valve 3, a faucet hot water inlet 4, a faucet cold water inlet 5, an access cover 6, a water flow generator 7, a display controller 8 and a faucet water outlet 9, and is shown in figures 1, 2 and 3. The automatic temperature cut-off one-way valve is composed of a sealing ring 301, a left bracket 302, a piston 303, a temperature memory spring (or thermal expansion valve) 304, a slide block 305, a return spring 306, a right bracket 307 and a temperature adjusting knob 308, wherein the piston is provided with a water through hole 311, and the temperature adjusting knob is provided with a water through hole 312, as shown in fig. 3.

As shown in fig. 4, the automatic temperature cut-off check valve is installed in the through hole 10 inside the shower faucet, the left side of the automatic temperature cut-off check valve is located at the middle position of the hot water inlet 201 and the cold water inlet 202 of the water mixing valve, cold and hot water inlets are separated, the automatic temperature cut-off check valve is designed to be hollow, cold and hot water is guaranteed to smoothly flow into the water mixing valve 2, and meanwhile, a one-way flow channel is formed between the cold and hot water pipelines. A step is designed in the through hole 10, the inner diameter of the left hole is smaller than that of the right hole, and the displacement of the temperature cut-off one-way valve core is limited.

As shown in fig. 5 and 6, the right bracket 307 of the automatic temperature cut-off check valve 3 is designed with a step inside, the inner diameter is slightly smaller than the outer diameter of the piston, and the piston is limited to move only to the right to the joint of the left bracket and the right bracket. The slider 305 is installed inside the piston 303 to be slidable left and right. The temperature memory spring (or the thermal expansion valve) is in a contraction state when the temperature is lower than 36 ℃, and the slide block is positioned on the left side of the water through hole 311 under the pressure action of the return spring; when the temperature is higher than 36 ℃, the temperature memory spring (or the thermal expansion valve) rapidly changes phase and extends to a memory state, the slide block moves rightwards to completely block the water through hole, and the water circulation channel is closed. When the temperature drops below 36 ℃, the return spring pushes the slide block to move leftwards, and pushes the temperature memory spring (or the thermal expansion valve) to return to the contraction state. The pressure of the return spring can be adjusted by rotating the temperature adjusting knob 308, and the water flow passing temperature of the automatic temperature cut-off check valve is finely adjusted.

Fig. 7 is a piping diagram of an embodiment, and is composed of a tap water inlet 21, a water heater water outlet 22, a water heater 23, a return pump 24, a return-pipe-free zero-cold water faucet 25, a hot water pipe 26, a cold water pipe 27, and the like.

When bathing is prepared, the touch display controller transmits a wireless starting signal to the water return pump, the water return pump is started, the water flow pushes the piston to move rightwards to the butt joint limit position of the left bracket and the right bracket, the water inlet 310 is opened, the state of the automatic temperature cut-off check valve core is shown in figure 8, the water flow flows through the automatic temperature cut-off check valve through the water inlet, the water through hole and the water through hole, and enters a circulation state; when hot water in the pipeline reaches the automatic temperature stop one-way valve, the temperature memory spring (or the thermal expansion valve) deforms and extends to push the sliding block to move right to completely block the water through hole, and at the moment, the state of the automatic temperature stop one-way valve core is as shown in figure 9 and enters a circulation stop state to prevent the hot water from flowing to the cold water pipeline. The display controller detects the temperature of the water faucet through a temperature sensor arranged in the water flow generator, and when the temperature reaches a set temperature, a stop signal is transmitted, and the water return pump stops working. The display controller is powered by a water flow generator with a built-in water tap water outlet.

By implementing the invention, the problem that hot water flows into the cold water pipeline is avoided, and when hot water reaches the zero-cold water shower faucet of the return-free pipe, the automatic temperature cut-off one-way valve in the shower faucet quickly cuts off the cold and hot water communicating channel, so that the hot water is prevented from flowing to the cold water pipeline. Water return pipe-free zero-cold-water shower faucets are installed at multiple indoor water utilization positions simultaneously and do not affect each other.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the technical solution of the present invention using the technical means and contents described above, or modify equivalent embodiments with equivalent variations, without departing from the technical solution of the present invention. Therefore, equivalent changes in shape, structure and principle according to the invention should be covered by the protection scope of the invention without departing from the technical scheme of the invention.

Claims

1. A return-pipe-free zero-cold-water shower faucet is characterized in that a cold-hot-water one-way circulation channel is built inside the shower faucet.

2. A return-pipe-free zero-cold-water shower faucet is characterized in that a one-way valve is installed in the middle of a cold and hot water inlet of a water mixing valve core of the shower faucet, and the cold and hot water inlet of the water mixing valve core is separated.

3. A return-pipe-free zero-cold-water shower faucet is characterized in that a temperature stop valve is installed inside the shower faucet, cold water passes through the shower faucet, and hot water is stopped.

4. A return-pipe-free zero-cold-water shower faucet is characterized in that a temperature memory spring (or a thermal expansion valve) is installed inside the shower faucet, and the on-off of cold water and hot water is controlled through the deformation of the temperature memory spring (or the thermal expansion valve).

A return-pipe-free zero-cold-water shower faucet is characterized in that a one-way valve arranged inside the faucet is designed in a hollow mode, and circulating water is passed through gaps in the one-way valve.

5. A return-pipe-free zero-cold-water shower faucet is characterized in that a piston is controlled to move by using the temperature phase change characteristic of a temperature memory spring, so that circulating water is controlled to flow, cold water flows through, and hot water is stopped.

6. A zero-cold water shower faucet without a return pipe is characterized in that a one-way temperature stop channel is established between cold and hot water pipelines, water flow can only flow in one way from the hot water pipeline side to the cold water pipeline side, and when the water temperature reaches a calibrated temperature, the water flow is automatically stopped.

7. A zero-cold water shower faucet without a return pipe is characterized in that a push-pull structure is formed between a temperature memory spring (or a thermal expansion valve) and a return spring.

8. When hot water flows through, the temperature memory spring (or the thermal expansion valve) is heated and deformed, and meanwhile, the reset spring (or the thermal expansion valve) is pushed to deform, so that the hot water is blocked from flowing through; when the water temperature is reduced, the temperature memory spring (or the thermal expansion valve) restores the original shape under the action of the return spring.

9. A return pipe-free zero-cold-water shower faucet is characterized in that a miniature water flow generator is integrated in the faucet and supplies power to a display controller, and the display controller controls a return pump to start and stop according to water temperature.