A solar water heater loop for anti-freezing and rapid hot water output

Abstract

The invention discloses a solar water heater circuit for anti-freezing and rapid hot water output, which includes a water delivery pipe connected between the solar water heater tank and the hot water outlet, and an air storage tank connected with the tap water supply pipe to pressurize the water delivery pipe. Into the air; return pipe, connected between the water supply pipe and the solar water heater tank to return the drainage of the water supply pipe. The invention utilizes the pressure in the tap water supply pipe as power to drive the air to push the hot water in the pipe back to the water tank of the solar water heater after the user runs out of hot water. The recycling of hot water solves the problems of slow hot water output from solar water heaters and easy freezing of pipes in winter, and the hot water supply, hot water recovery and cold water supply functions of the present invention can be realized at the same time without interfering with each other, which is convenient for users .

Description

technical field [0001] The invention belongs to the technical field of water heaters, in particular to a solar water heater circuit capable of preventing freezing and quickly producing hot water. Background technique [0002] Solar water heater is currently the most mature and widely used device in solar heat utilization technology. The heat collector and the water tank of the solar water heater are generally all installed on the roof of the building, which has just caused the following two problems: the one is that the length of the pipeline connecting the solar water heater water tank and the user's end is too long, so that every time the hot water is used. The cold water in the pipeline must be emptied first, which not only wastes water resources, but also is inconvenient for users to use. The 2nd, because the water tank of solar water heater is positioned at outdoor, the pipeline that connects solar water heater water tank and user's use end just might freeze when winte...

AI Technical Summary

Problems solved by technology

The heat collector and the water tank of the solar water heater are generally all installed on the roof of the building, which has just caused the following two problems: the one is that the length of the pipeline connecting the solar water heater water tank and the user's end is too long, so that every time the hot water is used. The cold water in the pipeline must be drained first, which not only wastes water resources, but also is inconvenient for users

Second, because the water tank of the solar water heater is located outdoors, when the temperature is below zero in winter, the pipes connecting the water tank of the solar water heater and the user end may freeze, making it impossible for users to use the water tank.

The problem with this solution is that, first of all, draining the hot water in the pipes wastes both the energy in the hot water and the water resources

Secondly, the hot water in the pipeline is discharged into the heat preservation water tank. If the hot water is not used for a long time, it will become cold. The setting of the heat preservation water tank increases the cost of investment, and there are many problems that will be encountered in actual use. Solve, such as what to do when the insulation water tank is full? How to connect the outlet pipe of the thermal insulation water tank and the outlet pipe of the solar water heater? Because the user is accustomed to using a fixed water outlet, connecting a separate water outlet to the insulation water tank does not conform to the user's usage habits

Moreover, connecting a separate water outlet to the thermal water tank can easily cause the user to suffer from insufficient water temperature or insufficient water volume during use.

To sum up, a good way to solve the freezing of solar water heater pipes in winter and slow hot water output is to replace the water in the pipes with air after the user has finished using the hot water, but the current technology has not been able to achieve this well. method

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