CN203116292U

CN203116292U - Water saving device of water heater

Info

Publication number: CN203116292U
Application number: CN 201320109252
Authority: CN
Inventors: 孙卫伟; 谭建; 黄根
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2013-03-12
Filing date: 2013-03-12
Publication date: 2013-08-07
Anticipated expiration: 2023-03-12

Abstract

The utility model discloses a water saving device of a water heater. The water saving device comprises a shell body, a water return pipe, a water plugging piston, an electromagnetic coil, a magnet, a spring, a water pump, a temperature sensor and a PLC controller, wherein the water return pipe is arranged in the shell body and communicated with a hot water outlet pipe and a cold water inlet pipe, the water plugging piston is arranged in the water return pipe, the electromagnetic coil and the magnet are connected with one end of the water plugging piston, the spring is connected between the top of the shell body and the magnet, the water pump is connected with the cold water inlet pipe, the temperature sensor is located on the hot water outlet pipe in the shell body, and the PLC controller is in electric connection with the water pump, the temperature sensor and the electromagnetic coil. The water plugging piston is provided with a hot water penetrating hole and an L-shaped cold water penetrating hole, the water plugging piston can move in the water return pipe under drive of the magnet, the hot water penetrating hole can communicate the hot water outlet pipe with a hot water outlet, and the L-shaped cold water penetrating hole can communicate the hot water outlet pipe with the cold water inlet pipe through the water return pipe. After a hot water switch is turned on, the water saving device recycles cold water in the hot water outlet pipe to the water heater to heat again, when the water in the hot water outlet pipe reaches an appropriate temperature, hot water flows out, and the water is saved.

Description

A kind of water-saving device of water heater

Technical field

The utility model relates to the water heater optional feature, is specifically related to a kind of water-saving device of water heater.

Background technology

Normally used gas water heater or electrothermal water heater all are to connect a cold water inlet that links to each other with running water pipe, connect a hot water outlet pipe again and are used for emitting hot water; When mounted, take place in order to prevent gas leakage or electric leakage accident, usually spaced apart water heater and bathroom, store the cold water that can't be heated by water heater among the hot water outlet pipe therebetween; Because water heater needs certain preheating time when heating up water, cold water can not be heated in moment, so water heater in use, open hot-water switch for the first time or hot-water switch closed after when opening again, the capital is flowed earlier a little while and is flowed out hot water again behind the cold water, and the cold water that flows out is bled off mostly in vain, causes the waste of water resource.After rough Statistics, water heater are opened hot-water switch for the first time, from cold water to the hot water that proper temperature is arranged, during probably have six premium on currency to be wasted; Open hot-water switch again after closing hot-water switch a little while, from cold water to the hot water that proper temperature is arranged, during probably have two premium on currency to be wasted.Because domestic water is frequent, if the factor of consideration time and number of users, the water yield of waste is huge.Though surplus water was collected and utilized with water saving in used vessel will be managed, implement trouble.

Summary of the invention

The purpose of this utility model provides a kind of water-saving device of water heater, it can be after hot-water switch be opened, cold water in the hot water outlet pipe is recovered in the water heater reheats, flow out hot water when the water in the hot water outlet pipe reaches proper temperature, avoid the waste of water resource.

Water-saving device of water heater described in the utility model, comprise housing, be located at the return pipe that is communicated with hot water outlet pipe and cold water inlet in the housing, be located at the water blockoff piston in the return pipe, solenoid and magnet with water blockoff piston one end is connected are connected the spring between case top and the magnet, are connected the water pump on the cold water inlet, be positioned at the temperature sensor on the hot water outlet pipe of housing, the PLC controller that is electrically connected with water pump, temperature sensor and solenoid; Described water blockoff piston is provided with hot water via hole and L shaped cold water via hole, the water blockoff piston can be mobile in return pipe under the drive of magnet, the hot water via hole can be communicated with the hot water outlet pipe with hot water outlet, L shaped cold water via hole can be communicated with by return pipe the hot water outlet pipe with cold water inlet.The PLC controller is according to the temperature of water in hot water outlet pipe control solenoid power on/off and pump working/cut out.

Further, the diameter of described hot water via hole equates that with hot water outlet pipe's internal diameter the diameter of described L shaped cold water via hole also equates with hot water outlet pipe's internal diameter.

Its operation principle is as follows: the hot-water switch of opening water heater, running water enters in the water heater from cold water inlet and heats, and flow out from the hot water outlet pipe, temperature sensor detects the temperature of water in the hot water outlet pipe, signal is passed to the PLC controller, if the temperature of water is lower than the temperature that the PLC controller is set in the hot water outlet pipe, then PLC controller control solenoid energising, magnet moves up, the compression spring, and drive water blockoff piston moves up, the water blockoff piston cuts off hot water outlet pipe and hot water outlet, the hot water outlet pipe is passed through L shaped cold water via hole, return pipe is communicated with cold water inlet, PLC controller control pump working, and water enters in the water heater by cold water inlet and reheats; Carrying out along with heating, if the temperature of water equals or is higher than the temperature of PLC controller setting in the hot water outlet pipe, then PLC controller control solenoid outage, magnet is under the elastic force and self gravitation effect of spring, moving down drive water blockoff piston moves down, the hot water via hole of water blockoff piston is communicated with the hot water outlet pipe with hot water outlet, water flows out from hot water outlet, and PLC controller control water pump cuts out.

The utility model can be after hot-water switch be opened, and the cold water in the hot water outlet pipe is recovered in the water heater reheat, and flows out hot water when the water in the hot water outlet pipe reaches proper temperature, and is little to the water heater influence, avoided the waste of water resource, saved water; It is simple in structure simultaneously, does not need in use to change the original structure of water heater, and easy to operate, cost is low, has excellent popularization and is worth.

Description of drawings

The view (arrow is represented water (flow) direction) that Fig. 1 is communicated with cold water inlet by L shaped cold water via hole, return pipe for hot water outlet pipe in the utility model.

The view (arrow is represented water (flow) direction) that Fig. 2 is communicated with hot water outlet for hot water outlet pipe in the utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Water-saving device of water heater as shown in Figure 1 and Figure 2, comprise housing 1, be located at the return pipe 8 that is communicated with hot water outlet pipe 5 and cold water inlet 7 in the housing 1, be located at the water blockoff piston 3 in the return pipe 8, the solenoid and the magnet 2 that are connected with water blockoff piston 3 one ends, be connected the spring 11 between housing 1 top and the magnet 2, be connected the water pump 10 on the cold water inlet 7, be positioned at the temperature sensor 4 on the hot water outlet pipe 5 of housing 1, the PLC controller 9 that is electrically connected with water pump 10, temperature sensor 4 and solenoid; Water blockoff piston 3 is provided with hot water via hole 31 and L shaped cold water via hole 32, and the diameter of hot water via hole 31 equates with hot water outlet pipe 5 internal diameter, and the diameter of L shaped cold water via hole 32 also equates with hot water outlet pipe 5 internal diameter,

Water blockoff piston 3 can move in return pipe 8 under the drive of magnet 2 and under the effect of spring 11, hot water via hole 31 can be communicated with hot water outlet pipe 5 with hot water outlet 51, L shaped cold water via hole 32 can be communicated with by return pipe 8 hot water outlet pipe 5 with cold water inlet 7.

The cold water inlet 71 of cold water inlet 7 is connected with running water pipe, running water sent in the water heater heat, the backwater water inlet 72 of cold water inlet 7 is connected with return pipe 8, will send in the water heater 6 from the cold water (being the water that temperature does not reach PLC controller design temperature) that the hot water outlet pipe is flowed out to reheat.

Operation principle of the present utility model is as follows: the hot-water switch of opening water heater 6, running water enters heating in the water heater 6 from cold water inlet 7, and from hot water outlet pipe's 5 outflows, temperature sensor 4 detects the temperature of water in the hot water outlet pipes 5, and signal is passed to PLC controller 9; Referring to Fig. 1, if the temperature of water is lower than the temperature that PLC controller 9 is set in the hot water outlet pipe 5, then PLC controller 9 control solenoid energisings, magnet 2 moves up, compression spring 11, and drive water blockoff piston 3 moves up, water blockoff piston 3 cuts off hot water outlet pipe 5 with hot water outlet 51, hot water outlet pipe 5 is communicated with cold water inlet 7 by L shaped cold water via hole 32,

return pipe

8,10 work of PLC controller 9 control water pumps, water enters in the water heater 6 by cold water inlet 7 and reheats; Referring to Fig. 2, carrying out along with heating, if the temperature of water equals or is higher than the temperature of PLC controller 9 settings in the hot water outlet pipe 5, then PLC controller 9 control solenoid outages, magnet 2 moves down drive water blockoff piston 3 and moves down under the elastic force and self gravitation effect of spring 11, and the hot water via hole 31 of water blockoff piston 3 is communicated with hot water outlet pipe 5 with hot water outlet 51, water flows out from hot water outlet 51, and PLC controller 9 control water pumps 10 cut out.

Claims

1. water-saving device of water heater, it is characterized in that: comprise housing (1), be located at the return pipe (8) that is communicated with hot water outlet pipe (5) and cold water inlet (7) in the housing, be located at the water blockoff piston (3) in the return pipe, the solenoid that is connected with water blockoff piston one end and magnet (2), be connected the spring (11) between case top and the magnet, be connected the water pump (10) on the cold water inlet (7), be positioned at the temperature sensor (4) on the hot water outlet pipe of housing, the PLC controller (9) that is electrically connected with water pump, temperature sensor and solenoid; Described water blockoff piston (3) is provided with hot water via hole (31) and L shaped cold water via hole (32), the water blockoff piston can be mobile in return pipe under the drive of magnet, hot water via hole (31) can be communicated with hot water outlet pipe (5) with hot water outlet (51), L shaped cold water via hole (32) can be communicated with by return pipe (8) hot water outlet pipe (5) with cold water inlet (7).

2. water-saving device of water heater according to claim 1, it is characterized in that: the diameter of described hot water via hole (31) equates that with hot water outlet pipe's (5) internal diameter the diameter of described L shaped cold water via hole (32) also equates with hot water outlet pipe's (5) internal diameter.