CN2679594Y - Self emptying device of inlet/outlet water pipe of solar water heater - Google Patents

Abstract

The utility model relates to a self emptying device of the water inlet pipe and the water outlet pipe of a solar water heater, which is characterized in that the cylinder of the water heater is provided with a spout hole and a connecting pipe; one end of the connecting pipe is provided with a water discharge valve in the cylinder, the valve body pipe of the water discharge valve is provided with a water inlet, and a valve core is connected with an electromagnet out of the cylinder; the other end of the connecting pipe is connected with water inlet and outlet valves out of the cylinder; one end of an exhaust pipe is positioned above a water containing space in the cylinder, and the other end of the exhaust pipe is communicated with the connecting pipe.

Description

Solar water heater inlet and outlet pipe self-draining device

technical field

The utility model is an antifreeze device for the inlet and outlet water pipes of solar water heaters.

Background technique

Existing solar water heaters are easy to freeze and cause blockage when the temperature drops below zero in temperate and frigid regions. The solution is to install thermal insulation and heating devices at the inlet and outlet of the water pipes. Using this device has the disadvantages of large power consumption and increased use costs. .

Contents of the invention

The purpose of the utility model is to provide a self-emptying device for the inlet and outlet pipes of a solar water heater, which can prevent the solar water heater from freezing and blocking when used in cold regions, and has a simple structure and low cost.

The technical solution of the utility model is: a solar water heater inlet and outlet pipe self-emptying device, including a water heater cylinder, an overflow hole on the cylinder, and a connecting pipe connecting the inside and outside of the cylinder, characterized in that: in the cylinder, the connecting pipe One end is equipped with a drain valve, the water inlet of the drain valve communicates with the water-holding space of the cylinder, the spool of the drain valve is connected with the electromagnet outside the cylinder, and one port of the exhaust pipe is placed above the overflow hole in the cylinder. The other end communicates with the connecting pipe, and outside the cylinder, the connecting pipe is equipped with water inlet and outlet valves.

The working process of this device is: when the hot water is released, the electromagnet is energized so that the electromagnet is attracted to drive the valve core to move, so that the water discharge valve is opened. At this time, the water storage space in the cylinder is connected with the outside of the cylinder, and the hot water in the cylinder passes Even the tube flows out. When the electromagnet is de-energized, the electromagnet is separated, the valve core is returned, the water discharge valve is closed, and the hot water is disconnected. At this moment, because one end of the connecting pipe below the drain valve is communicated with the external atmospheric pressure through the exhaust pipe, and the other end is communicated with the normally open water outlet valve, the hot water remaining in the connecting pipe can be automatically emptied. The effect of the exhaust pipe is: the vacuum state is not formed in the connecting pipe after the drain valve is closed. When supplying cold water to the water heater, open the water inlet valve on the connecting pipe and close the water outlet valve at the same time, tap water enters the cylinder through the connecting pipe and the exhaust pipe connected with the connecting pipe, and the cylinder can limit the water level and circulate air through the overflow hole . When the water inlet valve is closed to stop the water supply, the water outlet valve is opened at the same time, and the cold water remaining in the connecting pipe can be automatically emptied.

The utility model has the advantages that: since there is no water in the inlet and outlet pipes of the solar water heater, there is no problem of freezing and clogging. Using this technology to replace the original heat preservation and heating device can save electricity and reduce the cost of use, and the structure is simple and easy to operate.

Description of drawings

The accompanying drawing is a structural schematic diagram of the solar water heater inlet and outlet water pipe self-emptying device of the utility model.

Figure 1 Water outlet valve, 2 Water inlet valve, 3 Connecting pipes, 4 Valve core, 5 Water discharge valve, 6 Water inlet, 7 Overflow hole, 8 Cylinder body, 9 Valve body pipe, 10 Connecting rod, 11 Pull rod, 12 Electromagnet , 13 exhaust pipes, 14 water holding spaces.

Detailed ways

In the figure, the upper end of the cylinder body (8) of the solar water heater is provided with an overflow hole (7), which can limit the water level and is also a vent hole. The lower part of the cylinder body (8) is equipped with a sealed connecting pipe (3). , one end of the connecting pipe is equipped with a water discharge valve (5), and the valve body pipe (9) of the water discharge valve is provided with a water inlet (6), which communicates with the water holding space (14) of the cylinder, and the spool of the water discharge valve (4 ) is installed in the valve body pipe (9), the valve core (4) is hinged with one end of the electromagnet (12) outside the cylinder through the connecting rod (10) and the pull rod (11), and one end of the exhaust pipe (13) is placed Above the water-holding space (14) in the cylinder, the other end communicates with the connecting pipe (3). Outside the cylinder, the end of the connecting pipe (3) is equipped with a water inlet valve (2). Valve (1) is normally open. The inlet and outlet water valves can also be two-position one-way conjoined valves.

Claims (1)

1, a kind of solar water heater water inlet pipe and water outlet pipe is from emptier, comprise spout hole, the inside and outside connecting leg of connection cylindrical shell on water heater cylindrical shell, the cylindrical shell, it is characterized in that: in cylindrical shell, connecting leg one end is equipped with discharging valve, and the water inlet of discharging valve is communicated with the water space capacity of cylindrical shell, and the spool of the discharging valve electromagnet outer with being located at cylindrical shell is connected, blast pipe one port places the spout hole top in the cylindrical shell, the other end is communicated with connecting leg, outside cylindrical shell, is equipped with into and out of water valve on the connecting leg.

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