Anti-back-suction structure of steam faucet
By introducing vacuum valve structure and high-temperature resistant tetrafluoro pipe into the steam faucet, the steam faucet suction and pollution problems are solved, and the anti-suction and food safety effects are achieved.
Patent Information
- Application Number
- CN202422175079.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The existing steam faucets are prone to suck back and heat the liquid after the steam is stopped, resulting in contamination of the steam pipes, and the inner walls of the metal pipes are prone to smearing dirt, affecting food safety.
The vacuum valve structure is adopted, and the opening and closing of the valve stem is controlled by steam pressure to ensure the balance of pressure inside and outside the steam pipe group and prevent suction; a high-temperature resistant tetrafluoro pipe is used to replace some steam pipes.
Effectively prevent the steam faucet from suctioning, maintain the pressure balance inside and outside the steam pipe, avoid pollution, and improve food safety.
Smart Images
Figure CN223076760U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam faucets, in particular to an anti-backflow structure of a steam faucet. Background Art
[0002] A faucet, also known as a water valve, mainly functions to control the size of the water flow, including increasing / decreasing the water flow size and opening / closing the water flow. Currently, faucets are often used in household life. For example, household water heaters. A large amount of water vapor is generated when the faucet of a water heater discharges hot water, so it is also called a steam faucet. Of course, steam faucets are also used in other life or work scenarios.
[0003] In current conventional steam faucets, after the steam pipe stops discharging steam, since the air pressure inside the steam pipe is lower than the external air pressure, the steam faucet absorbs the heating liquid at the output end of the steam faucet, and the inhaled heating liquid enters the steam pipe, thus causing pollution to the steam pipe. At the same time, most of the existing steam faucets use metal pipes to transmit steam, and the inner wall of the metal pipe generally has not been surface-treated, with relatively strong roughness and graininess, which is extremely easy to hide dirt and scale, further exacerbating the food safety problem. Therefore, a steam faucet that can prevent backflow is needed. Summary of the Utility Model
[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an anti-backflow structure of a steam faucet, which can solve the problems described in the background art.
[0005] The technical solution for achieving the purpose of the utility model is: an anti-backflow structure of a steam faucet, including a steam inner tank, a vacuum valve, a steam pipe group, and a three-way quick connector. One end of the steam pipe group is connected to the first end of the three-way quick connector through the steam inner tank, the vacuum valve is connected to the second end of the three-way quick connector, and the third end of the three-way quick connector is connected to the other end of the steam pipe group. The other end of the steam pipe group serves as the output end for discharging steam.
[0006] A valve rod is provided on the vacuum valve. The valve rod is lifted upward under the action of the pressure generated by the flowing steam in the steam pipe group to close the vacuum valve. When the vacuum valve is in the closed state, the vacuum valve is separated from the outside and not connected; when there is no steam in the steam pipe group and no pressure can be generated, the valve rod drops downward under the action of gravity to open the vacuum valve. When the vacuum valve is in the open state, the vacuum valve is connected to the outside.
[0007] Further, the steam pipe group includes a first steam pipe and a third steam pipe. The steam inner tank is connected to the first end of the three-way connector through the third steam pipe. The third end of the three-way quick connector is connected to one end of the first steam pipe, and the other end of the first steam pipe is connected to the steam outlet nozzle.
[0008] Further, it further includes a steam solenoid valve. The steam pipe group includes a second steam pipe. One end of the third steam pipe is connected to the steam inner tank, and the other end is connected to the input end of the steam solenoid valve. The output end of the steam solenoid valve is connected to one end of the second steam pipe, and the other end of the second steam pipe is connected to the first end of the three-way quick connector.
[0009] Further, the vacuum valve is installed on the three-way quick connector.
[0010] Further, it further includes a bracket. The vacuum valve is installed on the three-way quick connector through the bracket.
[0011] Further, the bracket is fixedly or detachably installed on the three-way quick connector.
[0012] Further, the bracket is vertically installed at the upper middle part of the three-way quick connector, so that the vacuum valve is also vertically installed at the upper middle part of the three-way quick connector.
[0013] Further, it further includes a metal pipe. The steam outlet nozzle is installed on the metal pipe. The metal pipe is sleeved on the first steam pipe, and the first steam pipe extends from one end of the metal pipe close to the steam outlet nozzle.
[0014] Further, the metal pipe is a stainless steel pipe. The metal pipe is a straight pipe or a pipe including a bending part.
[0015] Further, the first steam pipe and / or the second steam pipe and / or the third steam pipe is a PTFE pipe.
[0016] The beneficial effects of the present utility model are as follows: After the steam solenoid valve of the present utility model is opened, the steam entering the steam faucet enters the steam solenoid valve. The steam solenoid valve enters the three-way quick connector through the steam pipe group. The steam in the three-way quick connector is then discharged to the steam outlet nozzle through the steam pipe group, and finally the steam is discharged through the steam outlet of the steam outlet nozzle. When the steam solenoid valve is closed, there is no steam-generated pressure. Under the action of gravity, the valve stem on the vacuum valve keeps the vacuum valve open, so that the inside and outside of the pipe of the steam pipe group are kept connected to maintain pressure balance, so that the heating liquid contacted by the steam outlet nozzle cannot enter the steam pipe without the action of negative pressure suction, avoiding pollution of the steam pipe and achieving the anti-backflow effect. Description of the Drawings
[0017] Figure 1 is a schematic structural diagram of the present utility model;
[0018] Figure 2 is a schematic sectional view of the structure of the utility model;
[0019] Figure 3 is a schematic structural diagram with the steam inner tank hidden;
[0020] Figure 4This is a schematic structural diagram of the present utility model for discharging steam into a cup;
[0021] Figure 5 is Figure 4 a schematic cross-sectional view of;
[0022] In the figure, 5 - universal ball, 11 - metal pipe, 12 - first steam pipe, 13 - second steam pipe, 14 - third steam pipe, 21 - steam solenoid valve, 23 - three-way quick connector, 24 - vacuum valve, 25 - valve stem, 26 - steam inner tank, 27 - water cup. Specific embodiments
[0023] The following further describes the present utility model in conjunction with the accompanying drawings and specific implementation schemes:
[0024] As Figures 1 - 5 shown, an anti-backflow structure of a steam faucet includes a steam inner tank 26, a steam solenoid valve 21, a vacuum valve 24, a steam pipe group, a three-way quick connector 23, and a metal pipe 11. The steam pipe group includes a segmented first steam pipe 12, a second steam pipe 13, and a third steam pipe 14. The steam inner tank 26 is used for storing steam. The steam inner tank 26 is a rectangular cavity. One end of the third steam pipe 14 is connected to the steam inner tank 26 in a communicating manner. The input end of the steam solenoid valve 21 is connected to the other end of the third steam pipe 14 in a communicating manner. The output end of the steam solenoid valve 21 is connected to one end of the second steam pipe 13 in a communicating manner. The other end of the second steam pipe 13 is connected to the first end of the three-way quick connector 23 in a communicating manner. The vacuum valve 24 is connected to the second end of the three-way quick connector 23 in a communicating manner. The third end of the three-way quick connector 23 is connected to one end of the first steam pipe 12 in a communicating manner.
[0025] A valve stem 25 is provided on the vacuum valve 24. The valve stem 25 of the vacuum valve 24 is lifted upward under the pressure of the generated steam, thereby closing the vacuum valve 24, so that the vacuum valve 24 remains closed when the steam solenoid valve 21 is opened and there is steam flowing in the steam pipe group. When the vacuum valve 24 is in the closed state, the vacuum valve 24 is separated from the outside and not communicated; when there is no pressure of steam, the valve stem 25 drops downward under the action of gravity, thereby opening the vacuum valve 24, so that the vacuum valve 24 remains open when the steam solenoid valve 21 is closed and there is no steam flowing in the steam pipe group. When the vacuum valve 24 is in the open state, the vacuum valve 24 is separated and communicated with the outside, so that the inside of the steam pipe group and the outside maintain the same pressure and maintain pressure balance.
[0026] In an optional embodiment, it further includes a bracket (not shown in the figure). The vacuum valve 24 is installed on the bracket, and the bracket is fixedly or detachably installed on the three-way quick connector 23. The bracket is vertically installed at the upper middle part of the three-way quick connector 23, so that the vacuum valve 24 is also vertically installed at the upper middle part of the three-way quick connector 23.
[0027] The other end of the first steam pipe 12 passes through a steering mechanism (not shown in the figure) and extends into the metal pipe 11. The metal pipe 11 is sleeved on the first steam pipe 12. The first steam pipe 12 is arranged along the axial direction (i.e., the length direction) of the metal pipe and extends out of the metal pipe 11. The metal pipe is fixedly connected to the steering mechanism, and the steering mechanism is used to realize the steering of the metal pipe 11, so that the metal pipe 11 can rotate relative to the steering mechanism.
[0028] The steering mechanism includes a universal ball 5, and the first steam pipe 12 passes through the universal ball and then extends into the metal pipe 11.
[0029] An outlet nozzle (not shown in the figure) is installed at one end of the metal pipe 11 away from the steering mechanism, and an outlet for discharging steam is provided on the outlet nozzle.
[0030] Of course, in actual use, the outlet nozzle may not be installed, and the steam directly discharges from the first steam pipe 12. For example, referring to Figure 4 and Figure 5 , the end of the first steam pipe 12 is placed into a water cup 27 or other container, and the steam discharges from the first steam pipe 12 and enters the water cup 27.
[0031] When the outlet nozzle is installed, the outlet nozzle is placed into the water cup, and the steam discharges from the outlet nozzle and is discharged into the water cup 27.
[0032] The metal pipe 11 can be straight or can include a bent portion. The metal pipe can be a stainless steel pipe, and the steam pipe group can be a high-temperature resistant tetrafluoro pipe.
[0033] After the steam solenoid valve 21 is opened, the steam in the steam inner tank 26 on the steam engine can enter the second steam pipe 13 through the third steam pipe 14. The steam then flows through the three-way quick connector 23, and the steam in the three-way quick connector 23 then passes through the first steam pipe 12. The steam in the first steam pipe 12 finally discharges through the outlet of the outlet nozzle. During the steam transportation process, since the steam pipe group is filled with steam, the steam impacts the valve stem 25 upward, causing the valve stem 25 to lift, so that the vacuum valve 24 remains closed, and all the steam enters the outlet nozzle through the first steam pipe 12 and is discharged.
[0034] After the steam solenoid valve 21 is closed, the steam in the steam inner tank 26 cannot pass through the steam solenoid valve 21 and enter the second steam pipe 13. Therefore, there is no steam-generated pressure in the vacuum valve. Under the action of gravity, the valve stem 25 on the vacuum valve 24 keeps the vacuum valve 24 open, making the inside and outside of the first steam pipe 12 communicate with each other to maintain pressure balance. As a result, the heating liquid in contact with the steam outlet nozzle cannot enter the first steam pipe 12 without the action of negative pressure suction, thus avoiding contamination of the first steam pipe 12. Among them, the built-in first steam pipe 12 is made of PTFE tube, which is heat-resistant, corrosion-resistant, does not adhere to stains, is environmentally friendly and hygienic, and greatly solves the food safety problem. Of course, the second steam pipe 13 and the third steam pipe 14 can also be PTFE tubes.
[0035] The embodiments disclosed in this specification are only an illustration of the unilateral features of the present invention. The protection scope of the present invention is not limited to this embodiment, and any other functionally equivalent embodiments fall within the protection scope of the present invention. For those skilled in the art, various corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present invention.
Claims
1. An anti-backflow structure for a steam faucet, characterized in that, It includes a steam inner container, a vacuum valve, a steam pipe group and a three-way quick connector. The steam inner container is connected and communicated with the first end of the three-way quick connector through one end of the steam pipe group. The vacuum valve is connected and communicated with the second end of the three-way quick connector. The third end of the three-way quick connector is connected and communicated with the other end of the steam pipe group. The other end of the steam pipe group serves as an output end for discharging steam. A valve rod is provided on the vacuum valve. The valve rod is lifted upward under the action of the pressure generated by the flowing steam in the steam pipe group to close the vacuum valve. When the vacuum valve is in the closed state, the vacuum valve is separated from the outside and not communicated. When there is no steam in the steam pipe group and no pressure can be generated, the valve rod drops downward under the action of gravity to open the vacuum valve. When the vacuum valve is in the open state, the vacuum valve is communicated with the outside.
2. The anti-backflow structure of the steam faucet according to claim 1, characterized in that, It further includes a steam outlet nozzle. The steam pipe group includes a first steam pipe and a third steam pipe. The steam inner container is connected and communicated with the first end of the three-way connector through the third steam pipe. The third end of the three-way quick connector is connected and communicated with one end of the first steam pipe. The other end of the first steam pipe is connected and communicated with the steam outlet nozzle. A steam outlet for discharging steam is provided on the steam outlet nozzle.
3. The anti-backflow structure of the steam faucet according to claim 2, characterized in that, It further includes a steam solenoid valve. The steam pipe group includes a second steam pipe. One end of the third steam pipe is connected and communicated with the steam inner container, and the other end is connected and communicated with the input end of the steam solenoid valve. The output end of the steam solenoid valve is connected and communicated with one end of the second steam pipe. The other end of the second steam pipe is connected and communicated with the first end of the three-way quick connector.
4. The anti-backflow structure of the steam faucet according to claim 3, characterized in that, The vacuum valve is installed on the three-way quick connector.
5. The anti-backflow structure of the steam faucet according to claim 4, characterized in that, It further includes a bracket. The vacuum valve is installed on the three-way quick connector through the bracket.
6. The anti-backflow structure of the steam faucet according to claim 5, characterized in that, The bracket is fixedly or detachably installed on the three-way quick connector.
7. The anti-backflow structure of the steam faucet according to claim 6, wherein, The bracket is vertically installed at the upper middle part of the three-way quick connector, so that the vacuum valve is also vertically installed at the upper middle part of the three-way quick connector.
8. The anti-backflow structure of the steam faucet according to claim 7, characterized in that, It further includes a metal pipe. The steam outlet nozzle is installed on the metal pipe. The metal pipe is sleeved on the first steam pipe, and the first steam pipe extends out from one end of the metal pipe close to the steam outlet nozzle.
9. The anti-backflow structure of the steam faucet according to claim 8, characterized in that, The metal pipe is a stainless steel pipe. The metal pipe is a straight pipe or a pipe including a bent part.
10. The anti-backflow structure of the steam faucet according to claim 9, characterized in that, The first steam pipe and / or the second steam pipe and / or the third steam pipe is a PTFE pipe.