Hot water tank type water dispenser capable of discharging residual sinking water

Abstract

A hot water tank type water dispenser capable of discharging residual sinking water comprises a water supply unit, a water tank, a heater and a water level probe, the water supply unit is in butt joint with a water supplementing opening of the water tank through a first electromagnetic valve, a second electromagnetic valve is arranged on a water outlet of the water tank, and the heater and the water level probe are arranged in the water tank. An expandable unit piece is arranged on the other side, far away from the heater, of the bottom of the water tank, and the expandable unit piece is connected to the water supply unit through a third electromagnetic valve. According to the water tank type water dispenser capable of discharging the residual water, an expandable structure is designed in the water tank, the residual water is pushed to be supplied to the outlet, on one hand, the situation that water below the water outlet cannot be supplied out is avoided, and on the other hand, the supply capacity is improved. Meanwhile, the structure is simple, use is convenient, and the efficiency of the water dispenser is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification equipment, in particular to the technical field of a heating type hot water drinking machine capable of removing most of the water stored at the bottom. Background Art

[0002] With the continuous improvement of living standards, people's requirements for drinking water quality and conditions are constantly increasing. There are also various styles and functions of water purifiers and drinking water equipment on the market to meet the needs of different users.

[0003] A water dispenser with a water tank usually has a heating device installed in the water tank to heat the water in the water tank and then supply it to the user. In order to avoid heating accidents caused by dry burning of the heater or damage to the machine due to dry burning, the height of the water outlet of this heating tank type is set higher than the position of the heater. This will cause some of the boiled water to remain in the water tank and cannot be supplied out, resulting in residual hot water. In response to this situation, it is necessary to drain the hot water from the water tank as much as possible without causing the risk of dry burning of the heater. Summary of the invention

[0004] The utility model aims at the problems of existing hot water tank type drinking fountains and proposes a hot water tank type drinking fountain for discharging surplus water. On the one hand, the water outlet cannot be designed at a lower position, and on the other hand, the water between the water outlet and the bottom of the tank must be discharged to solve the problem of residual hot water. In particular, an expandable structure is adopted to push the residual surplus water to the outlet.

[0005] The utility model relates to a hot water tank type drinking fountain for discharging surplus water, comprising a water supply unit, a water tank, a heater and a water level probe, wherein the water supply unit is connected to the water replenishment port of the water tank through a first solenoid valve, a second solenoid valve is provided on the water outlet of the water tank, the water tank has a built-in heater and a water level probe, and is characterized in that a heater is provided on one side of the bottom of the water tank, and an expandable unit component is provided on the other side of the bottom of the water tank away from the heater, and the expandable unit component is connected to the water supply unit through a third solenoid valve.

[0006] The expandable unit element is an elastic inner capsule or an accordion-type telescopic box.

[0007] A pressure switch is provided on the expandable unit.

[0008] The water level probe includes three probes with different water level heights, namely a first water level probe, a second water level probe and a third water level probe. The first water level probe is set at the top of the water tank to limit the maximum water level, the second water level probe is set at a high position such as the water outlet, and the third water level probe is set at a position 1 cm above the heating tube.

[0009] The water supply unit is connected to the water circuits where the first solenoid valve and the third solenoid valve are located respectively through a main solenoid valve.

[0010] The water tank type water dispenser for draining residual water involved in the utility model designs an expandable structure in the water tank to push the residual water to the outlet, which avoids the water below the water outlet from being unable to be supplied out and improves the supply capacity. At the same time, the structure is simple, easy to use, and the efficiency of the water dispenser is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is an overall schematic diagram of a hot water tank type drinking fountain for discharging excess water involved in the utility model;

[0012] Figure 2 This is a schematic diagram of the operating state structure of the water dispenser embodiment 1 of the utility model;

[0013] Figure 3 This is a schematic diagram of the operating state structure of the water dispenser embodiment 2 of the utility model;

[0014] Among them: 10, water supply unit; 11, first solenoid valve; 12, second solenoid valve; 13, third solenoid valve; 14, main solenoid valve; 20, water tank; 21, water replenishment port; 22, water outlet; 30, heater; 40, expandable unit component; 41, pressure switch; 51, first water level probe; 52, second water level probe; 53, second water level probe; 53, third water level probe; 60, pressure barrel water storage unit. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0016] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0017] Embodiment 1:

[0018] Please refer to the attached Figure 1 and attached Figure 2 , which shows a hot water tank type drinking fountain for draining excess water involved in the utility model, including a water supply unit 10, a water tank 20, a heater 30 and a water level probe, wherein the water supply unit 10 is connected to the water replenishment port 21 of the water tank 20 through a first solenoid valve 11, a second solenoid valve 12 is provided on the water outlet 22 of the water tank 20, the water tank 20 has a built-in heater 30 and a water level probe, and is characterized in that a heater 30 is provided on one side of the bottom of the water tank 20, and an expandable unit element 40 is provided on the other side of the bottom of the water tank 20 away from the heater 30, and the expandable unit element 40 is connected to the water supply unit 10 through a third solenoid valve 13.

[0019] The expandable unit element 40 is an elastic inner capsule or an accordion-type telescopic box.

[0020] In this embodiment, the expandable unit element 40 is an elastic inner capsule, which will shrink to a minimum volume when not in use. When it is needed, water is introduced into the elastic inner capsule through an electronic control program, causing the elastic inner capsule to swell as a whole, occupying the space in the water tank, squeezing the hot water at the bottom to above the water outlet 22 of the water tank 20, and discharged for drinking, thereby improving the volume utilization rate of the water tank, increasing the maximum hot water output of the water dispenser, and improving the hot water supply capacity.

[0021] A pressure switch 41 is provided on the expandable unit.

[0022] The water level probe includes three probes with different water level heights, namely a first water level probe 51, a second water level probe 52 and a third water level probe 53. The first water level probe 51 is set at the top of the water tank 20 to limit the maximum water level, the second water level probe 52 is set at a high position such as the water outlet, and the third water level probe 53 is set at a position 1 cm above the heating tube.

[0023] The first water level probe 51 is obviously limiting the maximum water level that can be reached by water replenishment. Once the first water level probe 51 touches the water level line, it indicates that the water tank is about to be full, and a signal is sent to stop water replenishment.

[0024] When the user is taking water, the water tank 20 releases water through the water outlet 22, and the water level slowly drops until the water level drops to the height where the second water level probe 52 is located, indicating that there is hot water remaining at the bottom of the water tank 20 at this time; and the third water level probe 53 is the water level line for water shortage alarm. Once the water level is lower than the water level line where the third water level probe 53 is located, it means that the water level will soon be lower than the position of the heater 30, there will be a risk of dry burning, and a water shortage alarm will be issued.

[0025] In the attached Figure 2In the embodiment, the water supply unit is a reverse osmosis unit, which further includes a pressure barrel water storage unit 60, which is connected to the water paths where the first solenoid valve 11 and the third solenoid valve 13 are located through a main solenoid valve 14. The pure water produced by the reverse osmosis unit can be supplied to the water tank or replenished into the expandable unit 40 through the main solenoid valve 14.

[0026] When the electronic control program notifies of water shortage, the reverse osmosis unit starts working first to prepare pure water, then the main solenoid valve opens, the first solenoid valve 11 opens, and the remaining solenoid valves are closed. The reverse osmosis unit is used as a water supply unit 10 to replenish water for the water tank 20. When the position of the first water level probe 51 is reached, the first solenoid valve 11 and the main solenoid valve 14 are closed to stop replenishing water.

[0027] After the water in the water tank is heated, the second solenoid valve 12 is opened to take water through the water outlet 22. When the user takes water from the water tank 20 until the water level drops to the second water level probe 52, the electronic control program notifies that the hot water supply needs to be increased, and then the main solenoid valve 14 and the third solenoid valve 13 are opened, and the pure water filtered by reverse osmosis enters the elastic inner capsule. The elastic inner capsule expands to raise the water level in the water tank, and the water stored at the bottom is discharged. When the water in the inner capsule increases and the pressure reaches the set value, the pressure switch 41 is disconnected, the first solenoid valve 11 is opened, and the main solenoid valve 14 is closed, and the water in the inner capsule reversely enters the water tank 20. When the water in the inner capsule decreases and the pressure reaches the set value, the pressure switch is closed, the third solenoid valve 13 is closed, the first solenoid valve 11 and the main solenoid valve 14 are opened, and the water tank enters a normal water replenishment and heating state.

[0028] Embodiment 2:

[0029] Please refer to the attached Figure 3 In this embodiment, the rest are the same as in Embodiment 1, and the different technical point is that the expandable unit element in this embodiment is an accordion-type telescopic box body 40'. This structure realizes internal expansion through a telescopic outer wall. When clean water is injected into the interior, the accordion-type telescopic box body 40' is filled, causing the accordion-type telescopic box body 40' to expand, occupying the space at the bottom of the water tank 20, squeezing the hot water at the bottom to above the water outlet 22 of the water tank 20, and discharging it for drinking.

[0030] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content disclosed above without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiments according to the technology of the utility model, which does not depart from the content of the technical solution of the utility model, belongs to the scope of the technical solution of the utility model.

Claims

1. A hot water tank type drinking fountain for draining excess water, comprising a water supply unit, a water tank, a heater and a water level probe, wherein the water supply unit is connected to the water supply port of the water tank through a first solenoid valve, a second solenoid valve is provided on the water outlet of the water tank, a heater and a water level probe are built into the water tank, and the characteristics are as follows: A heater is provided on one side of the bottom of the water tank, and an expandable unit element is provided on the other side of the bottom of the water tank away from the heater. The expandable unit element is connected to the water supply unit through a third solenoid valve.

2. The hot water tank type drinking fountain for draining excess water according to claim 1, characterized in that: The expandable unit element is an elastic inner capsule or an accordion-type telescopic box.

3. The hot water tank type drinking fountain for draining excess water according to claim 2, characterized in that: A pressure switch is provided on the expandable unit.

4. The hot water tank type drinking fountain for draining excess water according to claim 1, characterized in that: The water level probe includes three probes with different water level heights, namely a first water level probe, a second water level probe and a third water level probe. The first water level probe is set at the top of the water tank to limit the maximum water level, the second water level probe is set at a high position such as the water outlet, and the third water level probe is set at a position 1 cm above the heating tube.

5. The hot water tank type drinking fountain for draining excess water according to claim 4, characterized in that: The water supply unit is connected to the water circuits where the first solenoid valve and the third solenoid valve are located respectively through a main solenoid valve.

Images