TWI532959B - Electric water tank device - Google Patents

Description

Electric hot water tank device

The invention relates to an electric hot water tank device, which has the effect of avoiding the volume expansion of the liquid in the tank when the hot water tank is heated, and the hot water which is expanded from the hot water outlet to burn the user.

According to the electric hot water tank device, the structure is as shown in the first and second figures, and has a hot water tank 10 with a heater inside. A cold water inlet pipe 11 has one end connected to the bottom of the hot water tank 10 and the other end connected to a water source. A hot water outlet conduit 12 has one end connected to the top of the hot water tank 10 and the other end connected to the hot water tap 120. A touch switch 13 and a solenoid valve 14 are controlled by the touch switch 13. The touch switch 13 is disposed at the position of the hot water tap 120, and the electromagnetic valve 14 is disposed on the cold water inlet pipe 11. When the user controls the touch switch 13 to operate, the touch switch 13 can control the synchronous operation of the electromagnetic valve 14 to control the cold water. The cold water inlet pipe 11 enters the hot water tank 10, and the hot water flows out from the hot water tap 120. A capillary tube 15 is connected between the hot water outlet conduit 12 and the drainage system 16. When the hot water tank 10 is heated, the volume of water in the tank is expanded, and the internal water of the tank can be discharged from the drainage system 16 via the capillary 15.

However, if the drainage system 16 is blocked, when hot water is used, the sewage in the drainage system 16 will be sucked into the hot water outlet conduit 12 via the capillary 15 due to the siphon principle, causing drinking water hygiene problems, as shown in the second figure.

In order to improve the above-mentioned deficiency, the manufacturer removes the capillary 15 as shown in the third figure. An expansion water tank 18 is connected to the cold water inlet pipe 11 by a three-way joint 17. The casing of the expansion tank 18 is composed of two left and right concave covers 180, 181 in a mouth-to-mouth manner, wherein the left concave cover 180 end is connected to the cold water inlet pipe 11, and the right concave cover 181 covers the mask air hole 1810 to communicate with the outside air. A concave soft valve piece 1811 is fixed inside. In use, the touch switch 13 is pressed, the electromagnetic valve 14 is synchronously linked, and the cold water enters the hot water tank 10 from the cold water inlet pipe 11, and the hot water in the hot water tank 10 flows out from the hot water tap 120. In the expansion water tank 18, when the hot water is discharged, the outside air is sucked in by the cold water inlet pressure and the air holes 1810 of the right concave cover 181, so that the cold water in the expansion water tank 18 is discharged through the three-way joint 17 to form a negative pressure. When the touch switch 13 and the solenoid valve 14 stop operating (ie, stop the water discharge), the expansion water tank 18 forming the negative pressure is used to inhale part of the hot water in the hot water tank 10 by using the white Nuori principle, and the hot water tank 10 is lowered. The water level causes the hot water tank 10 to assume a non-full water level state. When the hot water tank 10 starts to heat, the volume of water heated and expanded by the liquid does not pass through the hot water outlet conduit 12 without the expansion space in the hot water tank 10 120 outflow, to avoid hot water flowing out of the scalding user.

The above-mentioned conventional electric hot water tank device improves the sanitary problems of the drinking water derived from the drainage system 16 although the first and second mounting capillary tubes 15 are improved. However, the expansion tank 18 can absorb the amount of liquid in the hot water tank 10 in the water stop state, mainly controlled by the cold water inlet pressure. If the touch switch 13 controls the hot water discharge amount is small, the relative cold water inlet pressure is low, and the expansion water tank The negative pressure of 18 is relatively small. When the water is stopped, the amount of liquid in the hot water tank 10 that can be sucked into the expansion tank 18 is relatively lowered, so that the water volume of the hot water tank 10 is insufficient to cope with the volume expanded when the liquid is heated. Hot water will often flow out of the hot water tap 120, scalding the user.

The present inventors have made improvements in design in view of the fact that the conventional electric hot water tank device has the above-mentioned missing in use, and the present invention has been produced.

Therefore, the main object of the present invention is to provide an electric hot water tank device which can maintain the sanitary of drinking water and prevent hot water which expands when the hot water tank is heated, and flows out of the burned user through the hot water outlet.

The main feature of the present invention is that a cold water inlet pipe is disposed between the hot water tank and the expansion water tank, and a pumping pump is provided. The pumping pump can provide a fixed suction force to the expansion water tank, and when the hot water tank stops water, the expansion water tank is The negative pressure can attract the fixed amount of water in the hot water tank into the expansion water tank, and maintain the waterless expansion space fixed in the hot water tank, so that there is sufficient expansion space in the hot water tank when the hot water tank is heated, so as to avoid hot water scalding during heating. user.

Conventional part

10‧‧‧ hot water tank

11‧‧‧ cold water inlet pipe

12‧‧‧ hot water outlet conduit

120‧‧‧ hot water tap

13‧‧‧Touch switch

14‧‧‧ solenoid valve

15‧‧‧ Capillary

16‧‧‧Drainage system

17‧‧‧ tee fitting

18‧‧‧Expansion tank

180‧‧‧ Left concave cover

181‧‧‧Right cover

1810‧‧‧ vent

1811‧‧‧Soft valve

Part of the invention

1‧‧‧Electric hot water tank device

20‧‧‧ hot water tank

21‧‧‧ cold water inlet pipe

22‧‧‧ hot water outlet conduit

220‧‧‧hot water outlet

23‧‧‧Expansion tank

210‧‧‧Tie joint

230‧‧‧Water inlet

231‧‧‧ Left concave cover

232‧‧‧Right cover

233‧‧‧Soft valve

234‧‧‧ stomata

24‧‧‧Touch switch

25‧‧‧ solenoid valve

26‧‧‧ pumping pump

The first figure shows the structure of the first conventional electric hot water tank device.

The second figure shows a schematic diagram of the use of the drainage system of the first conventional electric hot water tank device.

The third figure shows the structure of the second conventional electric hot water tank device.

The fourth figure shows a schematic structural view of an embodiment of the present invention.

The fifth figure is a schematic view showing the structure of the water discharge state of the embodiment of the present invention.

The sixth figure is a schematic view showing the structure of the water stop state of the embodiment of the present invention.

The technical means and structure of the present invention for achieving the above objects and effects will be described by way of the following examples.

Referring to the fourth figure, the electric hot water tank device 1 of the embodiment of the present invention has a hot water tank 20 with a heater inside, and the heater can be in the hot water tank 20 The water is heated.

The cold water inlet pipe 21 has one end connected to the water source and the other end connected to the bottom of the hot water tank 20.

The hot water outlet conduit 22 has one end connected to the top of the hot water tank 20 and the other end being a hot water outlet 220.

The expansion water tank 23 is connected to the cold water inlet pipe 21, and a cold water inlet pipe 21 is connected to a three-way joint 210. The water port 230 of the expansion water tank 23 is connected to the three-way joint 210 by a connecting pipe, and the water inlet and the cold water of the expansion water tank 23 are introduced. The water pipes 21 are connected. The outer casing of the expansion water tank 23 is formed by two-ported concave-shaped covers 231, 232 which are interlocked in a mouth-to-mouth manner, and the water nozzle 230 is located on the cover surface of the left concave cover 231. A soft valve piece 233 is fixed inside the expansion water tank 23, the soft valve piece 233 is concave, the notch faces the nozzle 230 and is located in the right concave cover 232, and the cover surface of the right concave cover 232 is provided with the air hole 234.

The touch switch 24 and the electromagnetic valve 25 are disposed at the hot water outlet 220 to control whether the electromagnetic valve 25 is actuated or not, so that the water of the water source enters the hot water tank 20 via the cold water inlet pipe 21, and further The water outlet or the water stop of the hot water outlet 220 is controlled; the electromagnetic valve 25 is disposed on the cold water inlet pipe 21 and located between the water source and the expansion water tank 23, and the cold water for controlling the water source enters the hot water tank 20 via the cold water inlet pipe 21. The touch switch 24 is touch-operated, and the electromagnetic valve 25 controls the cold water of the water source to enter the hot water tank 20 via the cold water inlet pipe 21, and the hot water outlet 220 is discharged by the water pressure; otherwise, the touch switch 24 is not pressed. The solenoid valve 25 is not actuated, the hot water tank 20 stops entering the water, and the hot water outlet 220 does not flow out of the hot water.

The main improvement of the present invention is that a pumping pump 26 is disposed between the hot water tank 20 and the expansion water tank 23 at the position of the cold water inlet pipe 21, and the pumping pump 26 can suck the water in the cold water inlet pipe 21 The hot water tank 20 is pushed and controlled by the touch switch 24 to operate in synchronization with the solenoid valve 25. By the setting of the pumping pump 26, the water inlet pressure of the water entering the hot water tank 20, the suction force of the pumping pump 26, and the outside air being sucked and squeezed through the air holes 234, the soft valve piece 233 in the expansion water tank 23 can be made. The concave side forms a stable negative pressure. When the solenoid valve 25 controls the hot water tank 20 to stop entering the water, the fixed negative pressure in the expansion water tank 23 will inhale the water in the hot water tank 20 through the nozzle 230. In the water tank 23, the water tank 20 is rendered free from water (as shown in the sixth figure), that is, the expansion space in the hot water tank 20 is stabilized when the water is heated, and the water volume is heated when the hot water tank 20 is heated. Inflated, the hot water tank 2 has a stable expansion space to accommodate the expansion volume of the water when heated, and the hot water does not arbitrarily flow out from the hot water outlet 220 to avoid scalding the user. When the user wants to drink hot water, the touch switch 24 is pressed, the electromagnetic valve 25 is opened, and the pumping pump 26 is actuated. The cold water is pumped into the hot water tank 20 by the water pressure and the suction pump 26, and the hot water is heated. The water outlet 220 flows out; at this time, the water originally in the expansion tank 23 and the water source are pumped by the pumping pump 26 to the hot water tank 20 (as shown in FIG. 5), and the hot water tank 20 forms a full water level. When the hot water outlet 220 stops discharging water (ie, the solenoid valve 25 is closed), part of the water in the original hot water tank 20 is filled by the negative pressure in the expansion water tank 23 to fill the entire expansion water tank 23, so that the hot water tank 20 is inside. The expansion space is equal to the volume of the expansion tank 23, so that the water in the hot water tank 20 is expanded when heated, to avoid no expansion space in the hot water tank 20 when the water expands, and the hot water flows out through the hot water outlet 220. user.

As can be seen from the above description, the present invention is provided by the pumping pump 26, and the pumping pump 26 is disposed between the expansion water tank 23 of the cold water inlet pipe 21 and the hot water tank 20, so that the expansion water tank 23 can be in the hot water tank. 20 has a fixed and sufficient suction when stopping the water inlet, so that the hot water in the hot water tank 20 in the water stop state can be stabilized and a fixed amount of reflux Into the expansion tank 23, the hot water tank 20 has a fixed water expansion space when heated, avoiding the hot water tank 20 heating when the water stop state is avoided, the hot water has no expansion space, and the hot water will flow out through the hot water outlet 220 to the scalded user. .

Looking at the above, the present invention is not only novel, inventive, but also has industrial applicability, and applications for invention patents are filed according to law, and patents are permitted.

1‧‧‧Electric hot water tank device

20‧‧‧ hot water tank

21‧‧‧ cold water inlet pipe

22‧‧‧ hot water outlet conduit

220‧‧‧hot water outlet

23‧‧‧Expansion tank

210‧‧‧Tie joint

230‧‧‧Water inlet

231‧‧‧ Left concave cover

232‧‧‧Right cover

233‧‧‧Soft valve

234‧‧‧ stomata

24‧‧‧Touch switch

25‧‧‧ solenoid valve

26‧‧‧ pumping pump

Claims (4)

The utility model relates to an electric hot water tank device which has a hot water tank with a heater inside, the heater can heat the water in the hot water tank, a cold water inlet pipe, one end is connected with the water source, the other end is connected with the hot water tank, and the hot water outlet pipe is connected. One end is connected with the hot water tank, and the other end is a hot water outlet; the expansion water tank has a nozzle communicating with the cold water inlet pipe, and a concave soft valve piece is fixed inside, the soft valve piece notch faces the nozzle, and the expansion tank box cover back The cover surface of the nozzle end is provided with a vent hole; the touch switch and the electromagnetic valve are disposed at a position of the hot water outlet to control the actuation of the solenoid valve, thereby controlling the water outlet or the water stop of the hot water outlet; the solenoid valve is disposed at The cold water inlet pipe is located between the water source and the expansion water tank to control the cold water to enter the hot water tank via the cold water inlet pipe; the main improvement of the present invention is that a cold water inlet pipe is provided with a pumping pump between the hot water tank and the expansion water tank. The pumping pump can pump the water in the cold water inlet pipe to the hot water tank, and is controlled by the touch switch, and is synchronized with the electromagnetic valve. The electric hot water tank device according to claim 1, wherein the cold water inlet pipe is connected to the bottom of the hot water tank. The electric hot water tank device of claim 1, wherein the hot water outlet conduit is connected to the top of the hot water tank. The electric hot water tank device according to any one of claims 1 to 3, wherein the outer casing of the expansion water tank is formed by two pieces of concave and convex covers which are locked in a mouth-to-mouth manner, and the water outlet is provided. On the left concave cover surface, the air hole is provided on the cover surface of the right concave cover, and the soft valve piece is located in the right concave cover.