CN202361638U - Cold water circulating type electric water heater - Google Patents

Abstract

A cold water circulating electric water heater belongs to the field of water heaters in the household appliance industry. Its structural feature is that it includes a hot water tank, a cold water pipe connected to a cold water source, a hot water pipe, a flow regulating valve and a water outlet nozzle. It is characterized by a temporary water storage tank, and a liquid level controller is installed at the bottom of the temporary water storage tank. , the bottom of the short-term water storage tank is connected to the cold water pipe and the hot water pipe respectively through the first pipe and the second pipe. The third sensor and the fifth control valve are installed on the first pipe, and the fourth sensor is installed on the second pipe. Control valve, the first control valve is installed at the upper end of the cold water pipe, the third control valve and the first sensor are installed at the lower end, and the second control valve and the second sensor are installed at the lower end of the hot water pipe. Both the valve and the sensor are controlled by a single chip microcomputer. The advantage is that it can provide comfortable hot water and avoid the waste of water resources.

Description

A cold water circulation electric water heater

technical field

The utility model belongs to the field of water heaters in the household appliance industry, in particular to a cold water circulation electric water heater. the

Background technique

At present, electric water heaters available for hand washing, face washing, bathing and laundry are installed at places such as families, hotels and offices, and its structure mostly is stored in a hot water tank by electric hot water for ready use at any time. However, there is a long distance between the hot water tank and the user's location, and a pipe connection needs to be installed. In this way, when the user uses hot water, the cold water stored in the pipe must be drained before the hot water can be used. This will cause no small waste. the

Contents of the invention

The purpose of the utility model is to provide a cold water circulating electric water heater, which can effectively overcome the shortcomings of the prior art. the

The utility model is achieved in this way, as shown in Figure 1, comprising: a hot water tank (8) with hot water stored in the cavity, a cold water pipe (1) connected with a cold water source, and a hot water pipe for discharging hot water (2), the flow regulating valve (14) and the water outlet nozzle (15) installed at the junction of the hot and cold water pipes. Its structural feature is to set a short-term water storage tank (9), a liquid level controller (10) is installed at the bottom of the short-term water storage tank (9), and the bottom of the short-term water storage tank (9) passes through the first pipe (16) and the second pipe (17) is connected with cold water pipe (1) and hot water pipe (2) respectively. A third inductor (13) and a fifth control valve (7) are installed in sequence on the first pipe (16), a fourth control valve (6) is installed on the second pipe (17), and a cold water pipe (1 ) is equipped with a first control valve (3), and in front of the connection point between the lower end and the first pipeline (16), a third control valve (5) and a first sensor (11) are installed in sequence. A second control valve (4) is installed near the flow regulating valve (14) at the lower end of the pipe (2), and a second sensor (12) is installed after the junction with the second pipeline (17). Above-mentioned each control valve and inductor are all controlled by a single-chip microcomputer installed in this device. The utility model has the advantages and positive effects that it can provide comfortable hot water and avoid water waste. the

Description of drawings

Fig. 1 is the structural schematic diagram of the utility model device

Figure 2 is a diagram of the working state of each control valve. the

Fig. 3 is the working flow diagram in the utility model system. the

In the figure: 1-cold water pipe 2-hot water pipe 3-first control valve 4-second control valve 5-third control valve 6-fourth control valve 7-fifth control valve 8-hot water tank (sectional view) 9-Temporary storage tank 10-Liquid level controller 11-First sensor 12-Second sensor 13-Third sensor 14-Flow regulating valve 15-Water outlet nozzle 16-First pipe 17-Second pipe 18- water intake

Detailed ways

As shown in Figure 1, when needs use hot water, can open water outlet nozzle (15), because do not use for a long time, the hot water in the hot water pipe (2) has become cold water. At this time, the second sensor (12) will detect that the water temperature in the hot water pipe (2) is lower than the temperature set by the user, so this signal is transmitted to each control valve, and the second control valve (4) It will be closed so that cold water cannot be discharged, and the fourth control valve (6) is opened to allow cold water to flow into the short-term storage tank (9). When the second sensor (12) on the hot water pipe (2) detects that the water temperature reaches the temperature required by the user, it sends this signal to each controller. At this time, the fourth control valve (6) is closed, The second control valve (4) is opened, and hot water can be discharged through the flow regulating valve (14) and the water outlet nozzle (15) for use by users. When the second sensor (12) detects that the water temperature in the hot water pipe (2) is higher than the temperature value set by the user, it sends a signal to each control valve. At this time, the fifth control valve (7) is opened, and the first The three control valves (5) are closed, and the flow regulating valve (14) automatically adjusts the ratio of cold and hot water according to the cold water temperature detected by the third sensor (13) and the hot water temperature detected by the second sensor (12). Make the water temperature that comes out in the water outlet nozzle (15) reach the requirement set by the user. When the water level in the short-term water storage (9) reaches the set value of the liquid level controller (10), this signal is passed to each control valve, so the fifth control valve (7) is closed, and the third control valve (5 ) is opened, at this time, the flow regulating valve (14) automatically adjusts the ratio of cold and hot water according to the water temperature of the cold water pipe detected by the first sensor (11) and the water temperature of the hot water pipe detected by the second sensor (12), Meet the requirements set by the user. the

Claims (1)

1. circulating electric heater of cold water; Include: cold water pipe (1), the hot-water line (2) of discharging hot water that the chamber internal memory is placed with the boiler (8) of hot water, connect with cold water source, be installed in the flow control valve (14) of hot water pipe junction and go out sprinkler head (15); Its architectural feature is that an of short duration water tank (9) is set; At of short duration water tank (9) inner bottom part fluid level controller (10) is installed; Of short duration water tank (9) bottom is connected with hot-water line (2) with cold water pipe (1) respectively with second pipeline (17) through first pipeline (16); The 3rd inductor (13) and the 5th control valve (7) are installed on first pipeline (16) successively, the 4th control valve (6) is installed on second pipeline (17), first control valve (3) is installed in the upper end of cold water pipe (1); Front at its bottom and first pipeline (16) tie point is equipped with the 3rd control valve (5) and first inductor (11) successively; Second control valve (4) is located to be equipped with near flow control valve (14) in bottom at hot-water line (2), and with second pipeline (17) interface point after second inductor (12) is installed, above-mentioned each control valve and inductor all are to be controlled by a single-chip microcomputer that is installed in this device.

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