CN201133688Y - water saver - Google Patents

Abstract

The utility model discloses a water-saving device assembles in cold and hot water pipeline (15) (14) system of water heater (31) or hot water accumulator and is located tap (32) preceding, include: the three-way electromagnetic valve (12) is arranged on the hot water pipeline (14), and the three-way electromagnetic valve (12) is an electromagnetic valve with a normally open inlet, a normally open outlet and a normally closed outlet; an electric water pump (11) respectively connected with a normally closed outlet of the three-way electromagnetic valve (12) and a cold water pipeline (15); a temperature sensing switch (13) which is arranged on the hot water pipeline (14) and is connected in front of the normally open inlet of the three-way electromagnetic valve (12); and a control circuit which consists of an electric button (21) for starting the three-way electromagnetic valve (12) and the power supply of the electric water pump (11) and a circuit relay (22). Hot water can be obtained without waiting for cold water stored in the hot water pipe (14) to run out.

Description

water saver

technical field

The utility model relates to a water-saving device for preventing cold water from flowing out of a hot and cold faucet after it is opened.

Background technique

As shown in Figure 3, the traditional water heater (31) or hot water storage (uncovered) is connected with hot and cold water pipes (15), (14) between the hot water faucet (32), because the water heater (31) or hot water Most of the reservoir is far away from the hot water faucet (32) used, so whenever the hot and cold water faucet (32) is turned on to generate water flow, the water heater (31) will be ignited to heat the water due to the water pressure generated by the water flow, or push the hot water reservoir The hot water inside flows into the hot water pipeline (14), but the water flowing out of the hot water faucet (32) must be the cold water originally stored in the water pipe, and the user must wait for the cold water to be completely discharged before getting hot water. Section cold water is all wasted in discharge, and must wait for the cold water stored in the hot water pipe (14) to run out before the use of hot water can be obtained. This situation will waste a lot of cold water stored in the hot water pipe (14). Under the long-term loss, the water waste is quite a lot. According to the actual test, about 5-10 liters of water is wasted each time. According to the current hot and cold water pipe system using water heaters or hot water storage, there is no relevant savings Even if there are some so-called materials with thermal insulation function in the hot water pipes, in actual use, after turning on the hot water tap, it is still impossible to obtain the appropriate water temperature immediately, so how to save water and avoid waste is the practical The new problems to be solved.

Utility model content

The purpose of the utility model is to provide a water-saving device that avoids waste caused by cold water discharge after turning on the hot water faucet.

In order to solve the above problems and achieve the purpose of the present utility model, its technical means are achieved in this way:

A water-saving device, which is assembled in the cold and hot water pipeline (15) (14) system of the water heater (31) or the hot water storage and is located in front of the faucet (32), including: a hot water pipeline (14) A three-way solenoid valve (12), the three-way solenoid valve (12) is a solenoid valve with a normally open inlet, a normally open outlet, and a normally closed outlet, when energized, the water flow can be converted to the normally closed outlet to flow out; One is respectively connected with the electric water pump (11) of the normally closed outlet of the three-way solenoid valve (12) and the cold water pipeline (15). 15); a temperature sensing switch (13) located on the hot water pipeline (14) and connected to the normally open entrance of the three-way solenoid valve (12), the temperature sensing switch (13) is a constant temperature sensing closed-circuit switch, in When the sensing water temperature exceeds the constant temperature, it will automatically open, and cut off the electric water pump (11) and the three-way solenoid valve (12) power supply, and can return to the closed circuit state when the temperature is lower than the constant value; and a control circuit is composed of One starts the electric button (21) of three-way solenoid valve (12) and electric water pump (11) power supply, and a circuit relay (22) and forms.

The aforementioned electric water pump (11), three-way solenoid valve (12), temperature sensing switch (13) and control circuit are assembled in a watertight and easily removable airtight container.

The aforementioned cold water pipeline (15) is connected with the water heater (31) or the hot water storage, and forms a circulating pipeline with the hot water pipeline (14), so that the cold water can flow back to the water heater (31) or the hot water storage for heating.

The utility model is a water-saving device, which has the following obvious advantages and beneficial effects compared with the prior art:

A water-saving device, which does not change the original function under normal use conditions. The cold water stored between the water heater or the hot water reservoir and the hot water faucet flows through the three-way solenoid valve (12) and the electric valve. After the water pump (11) enters the cold water pipeline (15) and sends it back to the water heater or the hot water storage, the water heater is also ignited at the same time due to the pressure difference generated by the water flow, and the cold water drawn back by the electric water pump (11) starts to be heated, or heated. The hot water in the water reservoir begins to flow into the hot water pipeline (14), and when the water temperature in front of the hot water tap (32) reaches the set temperature, the temperature sensor switch (13) will actuate and cut off the three-way solenoid valve ( 12) and the circuit of the electric water pump (11), the electric water pump (11) stops running, the hot water pipeline (14) returns to a normal state, and moderate hot water has been stored in the hot water pipeline, at this time, open the hot water faucet ( 32) Just can use hot water directly. There is no need to wait for the cold water to be discharged, so it can save water and avoid waste.

Description of drawings

Figure 1: A schematic diagram of the assembly of the utility model.

Figure 2: Schematic diagram of the single-wire circuit of the present invention.

Figure 3: A single-line schematic diagram of the utility model installed in the cold and hot water pipeline system.

Detailed ways

In order to present the content of the utility model more specifically, the following describes in detail the embodiments of the utility model with reference to the drawings.

Please see Fig. 3, the utility model can be installed in the bypass of the cold and hot water pipe directly before the hot and cold water faucet (32) in any existing water pipeline that uses the water heater, and can also be installed in the new cold and hot water pipe of the new building Installation in the system first will not affect any function of the original water pipeline system. As shown in the figure, the utility model is installed in the cold and hot water pipeline system that generally uses a water heater (31) or a hot water storage device (not uncovered). and before the hot and cold taps (32).

Please refer to Fig. 1 and Fig. 2 for the structure and action description of the utility model. It is a water-saving device (1) including a three-way solenoid valve (12) located on the hot water pipeline (14). The valve (12) has a solenoid valve with a normally open inlet, a normally open outlet, and a normally closed outlet. When energized, the water flow can be converted to the normally closed outlet to flow out; The electric water pump (11) of cold water pipeline (15), when energized, can discharge the cold water that three-way solenoid valve (12) normally closed outlet flows into cold water pipeline (15); One is located at hot water pipeline (14) and The temperature sensing switch (13) connected in front of the normally open inlet of the three-way solenoid valve (12), the temperature sensing switch (13) is a constant temperature sensing closed circuit switch, which will automatically open when the sensed water temperature exceeds the constant temperature, and cut off the electric motor. Water pump (11) and three-way electromagnetic valve (12) power supply, and can return to closed circuit state when temperature is lower than this constant value; ) electric button (21) of the power supply, and a circuit relay (22).

When you want to use hot water, press the electric button (21) first, then the electric water pump (11) and the three-way solenoid valve (12) will be activated after the relay (22) is energized, and the hot water pipeline (14) will be blocked. On the way leading to the hot and cold faucet (32), the water flows through the electric water pump (11) to the cold water pipeline (15). The reservoir, and then return to the electric water pump (11) to form a circulation pipeline, and thus generate a water flow pressure difference to ignite the water heater (31) to heat the water, or the water flow pushes the hot water in the hot water storage to flow into the hot water pipe In the road (14), when the water temperature in front of the hot water tap (32) reaches the set value, the temperature sensor switch (13) will be sensed to open and cut off the control circuit, and the electric water pump (11) will stop running, and the three-way The electromagnetic valve (12) also stops acting simultaneously, allowing the hot water pipeline (14) to return to its original state. At this time, only the hot and cold water faucet (32) can be turned on, and hot water with an appropriate water temperature can be obtained immediately without waiting for the discharge of cold water. action, it can save water and avoid waste.

The above is a detailed description based on the embodiment shown in the drawings, but the embodiment in the drawings is not used to limit the technical solution described in the utility model, but the industry can make various modifications or replacements and modifications within the scope of the utility model. Modifications, therefore, all implementation forms utilizing structures related to the present utility model, as long as they do not exceed the gist and spirit of the present utility model, various equivalent modification embodiments shall fall within the scope of the present utility model.

Claims (3)

1. A water-saving device, which is assembled in the cold and hot water pipeline (15) (14) system of the water heater (31) or the hot water storage and is positioned in front of the faucet (32), characterized in that it includes: A three-way solenoid valve (12) located on the hot water pipeline (14), the three-way solenoid valve (12) is a solenoid valve with a normally open inlet, a normally open outlet and a normally closed outlet; An electric water pump (11) connected to the normally closed outlet of the three-way solenoid valve (12) and the cold water pipeline (15) respectively; A temperature sensor switch (13) arranged on the hot water pipeline (14) and connected to the normally open entrance of the three-way solenoid valve (12); and A control circuit is made up of an electric button (21) for starting a three-way solenoid valve (12) and an electric water pump (11) power supply, and a circuit relay (22). 2. The water-saving device according to claim 1, characterized in that: the electric water pump (11), the three-way solenoid valve (12), the temperature sensor switch (13), and the control circuit are assembled in a waterproof and easy In a replaced airtight container. 3. The water-saving device according to claim 1, characterized in that: the cold water pipeline (15) is connected with the water heater (31) or the hot water storage, and forms a circulating pipe with the hot water pipeline (14) road.

Images