Bile-free large-flow multi-temperature-section quick-heating water dispenser

Abstract

The utility model discloses a container-free large-flow multi-temperature-section quick-heating water dispenser which comprises a main control circuit board, a water taking faucet, a water purifying pipe, a control circuit board, a flow meter, a water pump and a pipeline type heater, the water purifying pipe is communicated with the water taking faucet through the flow meter, the water pump and the pipeline type heater, and the pipeline type heater is a bicrystal heating pipe. A water boiling cavity is vertically formed in the bicrystal heating pipe, the lower end and the upper end of the water boiling cavity are connected with a water inlet pipe and a water outlet pipe respectively, the water inlet pipe and the water outlet pipe are provided with temperature sensors respectively, and the two temperature sensors stretch into the water inlet pipe and the water outlet pipe respectively and are electrically connected with the main control circuit board respectively. The double-crystal heating pipe is adopted to directly heat purified water, low-temperature water can be instantly heated to be in a boiling state, and the main control circuit board obtains data such as water inlet temperature information, water taking amount requirements and water outlet temperature information. The power of the bicrystal heating pipe and the power of the water pump are adjusted to instantly output the water taking temperature meeting the requirement of a user.

Description

Technical Field

[0001] The utility model relates to a commercial instant hot water dispenser, in particular to a waterless, large-flow and multi-temperature-section instant hot water dispenser without a water tank. Background Art

[0002] At present, the commercial instant hot water dispenser mainly uses a thick film tube for heating. The thick film tube mainly includes a stainless steel tube, an insulating coating and a thick film heating circuit coating. The insulating coating is sintered on the outer wall of the stainless steel tube, and the thick film heating circuit coating is printed on the insulating coating. Due to the barrier of the insulating coating, the heat transfer efficiency is reduced; in addition, due to the large thermal deformation of the stainless steel tube, it is easy to cause peeling from the coating. Therefore, this kind of water dispenser also needs to be equipped with a water tank, which is used to store warm water. The warm water is transported to the thick film tube for heating and then discharged to achieve the purpose of instantly obtaining boiling water.

[0003] In addition, once the water temperature in the water tank drops below the default value range of the water dispenser control system, it is generally heated by means of the heating device in the water tank or the water in the water tank is circulated and heated by means of the thick film tube.

[0004] Therefore, the above-mentioned water dispenser has problems such as overnight water, high energy consumption and high cost.

[0005] Of course, if the inner tank of the above-mentioned water dispenser is cancelled and the water flow in the thick film tube is reduced to achieve instant boiling water, the phenomenon of water vapor jetting from the water outlet will occur, which poses a safety hazard. In addition, since the thick film heating circuit coating cannot be cooled in time, dry and wet conditions will occur, affecting the service life of the thick film tube. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a waterless, large-flow and multi-temperature-section instant hot water dispenser with a simple and reasonable structure, which truly has no water tank, avoids repeated heating, has no overnight water, is reliable in operation, low in cost and energy-saving.

[0007] The purpose of the utility model is realized as follows:

[0008] A waterless, large-flow and multi-temperature-section instant hot water dispenser includes a main control circuit board, a water tap, a water purification pipe, a control circuit board, a flow meter, a water pump and a pipe-type heater which are electrically connected to the main control circuit board. The water purification pipe is communicated with the water tap through the flow meter, the water pump and the pipe-type heater. The pipe-type heater is a double-crystal heating pipe, and a vertical boiling water cavity is arranged in the double-crystal heating pipe. The upper and lower ends of the boiling water cavity are respectively connected with a water inlet pipe and a water outlet pipe, and temperature sensors are respectively arranged on the water inlet pipe and the water outlet pipe. The two temperature sensors respectively extend into the water inlet pipe and the water outlet pipe and are electrically connected to the main control circuit board.

[0009] The purpose of the utility model can also be solved by the following technical measures:

[0010] As a more specific solution, the double-crystal heating tube includes a silicon nitride ceramic transistor. A crystal electrothermal film is provided on the outer wall of the silicon nitride ceramic transistor. The crystal electrothermal film is formed by vapor deposition of a tin compound. A water boiling cavity is formed inside the silicon nitride ceramic transistor. The crystal electrothermal film surrounds the outer periphery of the silicon nitride ceramic transistor and extends along its axis direction. The upper and lower ends of the crystal electrothermal film are exposed and connected to the hoop-shaped electrodes. An insulating layer covers the outer surface of the middle section of the crystal electrothermal film. Silicon nitride ceramic crystal is an important structural ceramic material. It has a high hardness, lubricity itself, and is wear-resistant. It is an atomic crystal and antioxidant at high temperatures. Moreover, it can resist thermal shock. When heated to above 1000 °C in the air, rapidly cooled and then rapidly heated again, it will not break. People often use it to manufacture bearings, turbine blades, mechanical seal rings, the heat-receiving surfaces of engine components, etc.

[0011] The principle of the crystal electrothermal film technology is that various chemical elements in the form of molecules, atoms, and ions undergo complex physical and chemical reactions in the gas phase state, and a conductive heating layer with semiconductor characteristics mainly composed of ionic bonds and atomic bonds is formed on the surface of the insulating substrate, changing the characteristics of the surface of the insulating substrate and becoming a new type of electrothermal material.

[0012] As a further solution, both the water inlet pipe and the water outlet pipe are straight pipes, and openings are provided on the outer wall of the pipes. One end of the temperature sensor is inserted into the opening. Both the water inlet pipe and the water outlet pipe further include silicone three-way joints. Two ports of the silicone three-way joint are sleeved on the outer wall of the pipe, and the inside of the silicone three-way joint converges opposite to the opening. The remaining one port of the silicone three-way joint sleeves the temperature sensor.

[0013] As a further solution, a pipe box is provided outside the double-crystal heating tube. The upper and lower ends of the outer wall of the double-crystal heating tube expose the material of the silicon nitride ceramic transistor and are connected to the pipe sleeve. The pipe sleeve is connected to the end of the pipe box. There are also holes on the outer wall of the pipe box, and a snap-acting thermostat is installed in the holes. The heat-receiving surface of the snap-acting thermostat contacts the insulating layer of the crystal electrothermal film.

[0014] As a further solution, there are two snap-acting thermostats, and the two snap-acting thermostats are connected in series and distributed vertically.

[0015] As a further solution, a display screen, a temperature setting switch, a water intake setting switch, a hot water intake switch, and a normal temperature water intake switch are provided on the control circuit board.

[0016] As a further solution, the water dispenser includes a body and a control panel. A water purification filter element is provided inside the lower part of the body. The input end of the water purification filter element is connected to a water pipe, and the output end of the water purification filter element is connected to the water purification pipe. The control panel is arranged on the front of the upper part of the body, and the back of the control panel is the control circuit board. The main control circuit board and the double-crystal heating tube are both arranged in a control box, and the control box is located inside the upper part of the body; the water tap is located in the upper-middle part of the body and below the control panel.

[0017] The beneficial effects of the present utility model are as follows:

[0018] (1) The present utility model uses a double-crystal heating tube to directly heat pure water, which can instantaneously heat low-temperature water to the boiling state. The main control circuit board adjusts the power of the double-crystal heating tube and the power of the water pump by obtaining data such as the inlet water temperature information, the required water intake, and the outlet water temperature information to meet the instantaneous output of the water intake water temperature required by the user.

[0019] (2) The double-crystal heating tube of the present utility model has the characteristics of large power density, small volume, and strong high-temperature resistance. Taking the boiling water cavity capacity of the double-crystal heating tube as 10ML as an example, in the case of a flow rate of 600ML / min, the double-crystal heating tube can heat normal-temperature water to 45 degrees Celsius by using 600W; combined with the flow rate and power (which can reach more than 2000W) control, it can directly produce boiling water, truly realizing no water tank, and meeting the requirements of high power and large flow rate of commercial machines.

[0020] (3) The present utility model has no water tank, saves metal resources, has a lower cost, avoids repeated heating, eliminates overnight water, and can also reduce energy consumption. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the circuit and water path structure of an embodiment of the present utility model.

[0022] Figure 2 It is a schematic diagram of the structure of an embodiment of the present utility model.

[0023] Figure 3 It is a schematic diagram of the pipe hoop type electrode structure in the present utility model.

[0024] Figure 4 It is a schematic diagram of the pipe sleeve structure in the present utility model. Detailed Embodiments

[0025] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0026] See Figure 1 and Figure 2As shown in the figure, a large-flow and multi-temperature-section instant-heating water dispenser without a water tank includes a main control circuit board 7, a water tap 9, a water purification pipe, and a control circuit board 8, a flow meter 5, a water pump 6, and a pipe-type heater that are electrically connected to the main control circuit board 7. The water purification pipe is connected to the water tap 9 through the flow meter 5, the water pump 6, and the pipe-type heater. The pipe-type heater is a double-crystal heating pipe 1. A vertical boiling water cavity 12 is provided inside the double-crystal heating pipe 1. The upper and lower ends of the boiling water cavity 12 are respectively connected to a water inlet pipe 21 and a water outlet pipe 22. Temperature sensors are respectively provided on the water inlet pipe 21 and the water outlet pipe 22. The two temperature sensors respectively extend into the water inlet pipe 21 and the water outlet pipe 22 and are respectively electrically connected to the main control circuit board 7.

[0027] The double-crystal heating pipe 1 includes a silicon nitride ceramic transistor 11. A crystal electric heating film 13 is provided on the outer wall of the silicon nitride ceramic transistor 11. The crystal electric heating film 13 is formed by vapor deposition of a tin compound. The boiling water cavity 12 is formed inside the silicon nitride ceramic transistor 11. The crystal electric heating film 13 surrounds the outer circumference of the silicon nitride ceramic transistor 11 and extends along its axial direction. The upper and lower ends of the crystal electric heating film 13 are exposed and connected to a pipe hoop type electrode 14. An insulating layer covers the outer surface of the middle section of the crystal electric heating film 13.

[0028] Both the water inlet pipe 21 and the water outlet pipe 22 are straight pipes, and openings are provided on the outer wall of the pipes. One end of the temperature sensor is inserted into the opening. Both the water inlet pipe 21 and the water outlet pipe 22 further include a silica gel tee 23. Two ports of the silica gel tee 23 are sleeved on the outer wall of the pipe, and the inside of the silica gel tee 23 converges opposite to the opening. The remaining one port of the silica gel tee 23 sleeves the temperature sensor. The temperature sensors of the water inlet pipe 21 and the water outlet pipe 22 are respectively an inlet water temperature sensor 31 and an outlet water temperature sensor 33. A convex rib is provided outside the end of the silica gel tee 23. Cable ties can be added outside the three ports of the silica gel tee 23. The convex rib can prevent the cable tie from coming off. After adding the cable tie, it is ensured that the silica gel tee 23 is sealed and fixed to the outer wall of the water pipe and the temperature sensor.

[0029] A pipe box 16 is provided outside the double-crystal heating pipe 1. The upper and lower ends of the outer wall of the double-crystal heating pipe 1 expose the material of the silicon nitride ceramic transistor 11 and are connected to a pipe sleeve 17. The pipe sleeve 17 is connected to the end of the pipe box 16. A hole position is further provided on the outer wall of the pipe box 16. A snap-action thermostat 32 is installed in the hole position. The heat receiving surface of the snap-action thermostat 32 contacts the insulating layer of the crystal electric heating film 13.

[0030] Two snap-action thermostats 32 are provided. The two snap-action thermostats 32 are connected in series and distributed vertically.

[0031] A display screen 81, a temperature setting switch 82, a water intake setting switch 83, a hot water intake switch 84, and a normal temperature water intake switch 85 are provided on the control circuit board 8.

[0032] The water dispenser includes a body 20 and a control panel 201. A water purification filter element 4 is provided inside the lower part of the body 20. The input end of the water purification filter element 4 is connected to a water pipe, and the output end of the water purification filter element 4 is connected to the purified water pipe. The control panel 201 is arranged on the front surface of the upper part of the body 20. The back surface of the control panel 201 is the control circuit board 8. The main control circuit board 7 and the double-crystal heating tube 1 are both arranged inside a control box 71, and the control box 71 is located inside the upper part of the body 20. The water tap 9 is located in the upper middle part of the body 20 and below the control panel 201.

[0033] Its working principle is as follows: When taking hot water, the main control circuit board 7 sets the power of the double-crystal heating tube according to the inlet water temperature, water flow rate and the taken water temperature. When the double-crystal heating tube cannot meet the requirement of the taken water temperature even when working at full power, the power of the water pump is reduced to reduce the water flow rate so that the user can directly obtain the required water temperature. When taking hot water, the user can first set the water temperature and water volume, and then long-press the hot water tap switch 84. Or, when directly taking boiling water, long-press the hot water tap switch 84. When taking normal-temperature water, directly long-press the normal-temperature water tap switch 85.

[0034] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A large-flow, multi-temperature-section, instant-heating water dispenser without a water tank, comprising a main control circuit board (7), a water tap (9), a water purification pipe, and a control circuit board (8), a flow meter (5), a water pump (6), and a pipe-type heater that are electrically connected to the main control circuit board (7). The water purification pipe is connected to the water tap (9) through the flow meter (5), the water pump (6), and the pipe-type heater. It is characterized in that: The pipeline heater is a double-crystal heating pipe (1). A water-boiling cavity (12) is vertically arranged inside the double-crystal heating pipe (1). The upper and lower ends of the water-boiling cavity (12) are respectively connected with a water inlet pipe (21) and a water outlet pipe (22). Temperature sensors are respectively arranged on the water inlet pipe (21) and the water outlet pipe (22). The two temperature sensors respectively extend into the water inlet pipe (21) and the water outlet pipe (22) and are electrically connected with the main control circuit board (7).

2. The no-tank large-flow multi-temperature-section instant hot water dispenser according to claim 1, characterized in that: The double-crystal heating pipe (1) includes a silicon nitride ceramic transistor (11). A crystal electrothermal film (13) is arranged on the outer wall of the silicon nitride ceramic transistor (11). The crystal electrothermal film (13) is formed by vapor deposition of a tin compound. The water-boiling cavity (12) is formed inside the silicon nitride ceramic transistor (11). The crystal electrothermal film (13) surrounds the outer periphery of the silicon nitride ceramic transistor (11) and extends along its axial direction. The upper and lower ends of the crystal electrothermal film (13) are exposed and connected with a pipe hoop electrode. An insulating layer covers the outer surface of the middle section of the crystal electrothermal film (13).

3. The large-flow multi-temperature-section instant hot water dispenser without a water tank according to claim 1, wherein: Both the water inlet pipe (21) and the water outlet pipe (22) are straight pipes and openings are arranged on the outer pipe walls. One end of the temperature sensor is inserted into the opening. Both the water inlet pipe (21) and the water outlet pipe (22) further include a silica gel tee joint (23). Two ports of the silica gel tee joint (23) are sleeved on the outer pipe wall and the inside of the silica gel tee joint (23) converges opposite to the opening. The remaining port of the silica gel tee joint (23) sleeves the temperature sensor.

4. The no-tank large-flow multi-temperature-section instant hot water dispenser according to claim 2, wherein: A pipe box (16) is arranged outside the double-crystal heating pipe (1). The materials of the silicon nitride ceramic transistors (11) are exposed on the outer walls of the upper and lower ends of the double-crystal heating pipe (1) and are connected with pipe sleeves (17). The pipe sleeves (17) are connected with the ends of the pipe box (16). A hole position is further arranged on the outer wall of the pipe box (16). A snap-acting thermostat (32) is installed in the hole position. The heat receiving surface of the snap-acting thermostat (32) contacts with the insulating layer of the crystal electrothermal film (13).

5. The large-flow multi-temperature-section instant hot water dispenser without a water tank according to claim 4, characterized in that: There are two snap-acting thermostats (32). The two snap-acting thermostats (32) are connected in series and are distributed vertically.

6. The instant hot water dispenser with large water flow, multiple temperature segments and quick heating according to claim 1, characterized in that: A display screen (81), a temperature setting switch (82), a water intake setting switch (83), a hot water intake switch (84) and a normal temperature water intake switch (85) are arranged on the control circuit board (8).

7. The large-flow multi-temperature-section instant hot water dispenser without a water tank according to claim 1, characterized in that: The water dispenser includes a machine body (20) and a control panel (201). A water purification filter element (4) is arranged inside the lower part of the machine body (20). The input end of the water purification filter element (4) is connected with a water supply pipe. The output end of the water purification filter element (4) is connected with the purified water pipe. The control panel (201) is arranged on the front surface of the upper part of the machine body (20). The back surface of the control panel (201) is the control circuit board (8). The main control circuit board (7) and the double-crystal heating pipe (1) are both arranged in a control box (71). The control box (71) is located inside the upper part of the machine body (20). The water intake faucet (9) is located in the upper middle part of the machine body (20) and is below the control panel (201).

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