Compact solar water heater with anti-freezing emptying function

Abstract

The invention provides a compact solar water heater with an anti-freezing emptying function. The compact solar water heater comprises a heat storage water tank and a water inlet and outlet pipe, wherein the tail end of the water inlet and outlet pipe is provided with a hot water outlet, a cold water inlet and a water discharging opening used for emptying the water inlet and outlet pipe, the water discharging opening is controlled by a water discharging valve, the cold water inlet is controlled by a water supply valve, a closing element for opening or closing a pipe opening is arranged on the pipe opening of the water inlet and outlet pipe positioned in an inner cavity of the heat storage water tank, a communication pipe vertically penetrates through the closing element, the communication pipe is communicated with an air space at the top of the inner cavity of the heat storage water tank and the water inlet and outlet pipe arranged under the closing element, a driving rod which downwards extends and can vertically move for driving the closing element to open or close the pipe opening of the water inlet and outlet pipe is fixedly arranged at the closing element or on the communication pipe arranged under the closing element, and the driving force of the driving rod is supplied by a driving mechanism. The compact solar water heater has the advantages that the complete emptying of the water inlet and outlet pipe is realized, the anti-freezing problem of the water heater is thoroughly solved, and the instant available effect of the solar water heater is realized.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a compact solar water heater with antifreeze and emptying functions. Background technique [0002] Although the outdoor pipeline of the water inlet and outlet pipes on the existing compact household solar water heater is covered with an insulation layer, the water in the outdoor pipeline still freezes in winter, so that the hot water in the hot water storage tank cannot be released, and even the outdoor pipeline is damaged. Frozen cracking phenomenon. In order to solve the above problems, technicians cover the outdoor pipeline with heating tape in an attempt to melt the ice in the pipeline by means of electric heating. However, this solution increases the product manufacturing cost and operating cost, and increases the economic burden of the user. At present, the most effective way to solve the above-mentioned technical problems is to install an emptying valve for emptying the water in...

AI Technical Summary

Problems solved by technology

However, the existing emptying valve is arranged on the water inlet and outlet pipe below the hot water storage tank, and water is still stored in the pipeline between the hot water storage tank and the emptying valve. The temperature of the hot water tank will be very low, and it will also freeze over a long period of time and affect the use. It still cannot fundamentally solve the problem of antifreeze and instant use of the water heater

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