High-safety instant heating faucet

Abstract

The high-safety instant heating faucet comprises a heating device and a first temperature controller, the first temperature controller is installed on the surface of the heating device, the first temperature controller is connected or disconnected according to the surface temperature of the heating device, and the first temperature controller is arranged on a power connection circuit of the heating device. According to the instant heating faucet, the first temperature controller is arranged on the surface of the heating device and is connected or disconnected according to the surface temperature of the heating device instead of being installed in the heating device, installation and replacement of the first temperature controller are facilitated, and due to the arrangement of the first temperature controller, the safety and reliability of the instant heating faucet during operation can be improved.

Description

Technical Field

[0001] This application relates to the technical field of faucets, and particularly to an instant hot faucet with high safety. Background Art

[0002] An instant hot faucet, also known as an electric hot faucet, refers to a faucet that can produce hot water within 3s - 5s after being turned on. In recent years, due to the advantages of instant hot faucets such as being able to produce both hot and cold water, easy installation, and simple operation, they have been widely used. The heating device in existing instant hot faucets includes a water storage cavity, and a heating element is arranged in the water storage cavity. The water flow in the water storage cavity is heated by the heating element to provide hot water. Currently, a fusible thermal protector is used on instant hot faucets to provide over-temperature protection for the heating element. Although the thermal protector has advantages such as small size and mature and reliable technology, it also has certain disadvantages: 1. The thermal protector is a one-time thermal fuse. Once it plays a protective role, the heating device will no longer heat, and it must be returned to the factory for repair, lacking sustainability. 2. The thermal protector must be inserted into the thermal protection hole of the traditional heating element to sense the temperature of the heating element. Once the assembly worker installs it in place incorrectly, the ability of the thermal fuse to sense the temperature of the heating element decreases, and it cannot accurately fuse at the corresponding temperature, easily causing the phenomenon of burning the machine, with high requirements for assembly and certain potential safety hazards. 3. As the only over-temperature protection component of the hot faucet, the hot faucet has a very high dependence on the thermal protector, and there is a large error in the temperature at which the thermal protector itself fuses. Once the thermal protector fails, the reliability and safety of the machine will be greatly reduced. Summary of the Utility Model

[0003] In order to solve the above-mentioned disadvantages and deficiencies existing in the prior art, the purpose of this application is to provide an instant hot faucet with high safety to improve the reliability during the operation of the instant hot faucet.

[0004] To achieve the above purpose, an instant hot faucet with high safety in this application includes a heating device and a first temperature controller. The first temperature controller is installed on the surface of the heating device. The first temperature controller is turned on or off according to the surface temperature of the heating device, and the first temperature controller is arranged on the power connection line of the heating device.

[0005] Further, it also includes a second temperature controller. The second temperature controller is also arranged on the surface of the heating device. The second temperature controller is turned on or off according to the surface temperature of the heating device, and the second temperature controller is connected in series with the first temperature controller.

[0006] Further, the upper limit temperature of the second temperature controller is higher than the upper limit temperature of the first temperature controller.

[0007] Further, the second temperature controller is a manually reset temperature controller.

[0008] Further, the first thermostat is an automatic reset thermostat.

[0009] Further, the heating device is provided with a water inlet end and a water outlet end. A temperature sensor is provided at the water outlet end. The temperature sensor is electrically connected to the control board, and the control board is electrically connected to the display.

[0010] Further, the control board is electrically connected to the heating device and the first thermostat respectively.

[0011] Further, the heating device is a cast aluminum heating element.

[0012] Further, the water inlet end is communicated with a water inlet pipe, and a flow regulating valve is provided on the water inlet pipe.

[0013] Further, the flow regulating valve includes a valve core and a valve rod. The rotation of the valve rod drives the rotation of the valve core. A trigger block is provided on the valve rod. The trigger block rotates together with the valve rod. A microswitch is provided on the rotation track of the trigger block. The microswitch is connected in series with the first thermostat.

[0014] Compared with the prior art, the present utility model has the following beneficial technical effects: The first thermostat is arranged on the surface of the heating device and is turned on or off according to the surface temperature of the heating device, rather than being installed inside the heating device, which facilitates the installation and replacement of the first thermostat. And the setting of the first thermostat can improve the reliability and safety of the instant hot water faucet during operation compared with the thermal protector. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of an instant hot water faucet with high safety according to an embodiment of the present application;

[0016] Figure 2 is Figure 1 the exploded view in

[0017] Figure 3 is Figure 2 the structural diagram from another angle of

[0018] Figure 4 is Figure 2 the exploded view of the cast aluminum heating element and the water inlet pipe in

[0019] Figure 5 is Figure 2 the assembly diagram of the flow regulating valve and the water inlet pipe in

[0020] Figure 6 is Figure 5 the exploded view of

[0021] Figure 7 Schematic diagram of the rotation trajectory of the trigger block in an embodiment of the present application;

[0022] Figure 8 Control schematic diagram of the cast aluminum heating element in an embodiment of the present application;

[0023] Figure 9 Control schematic diagram of the cast aluminum heating element in an embodiment of the present application;

[0024] Figure 10 Control schematic diagram of the cast aluminum heating element in an embodiment of the present application;

[0025] Figure 11 Control schematic diagram of the cast aluminum heating element in an embodiment of the present application. Detailed implementation manners

[0026] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0027] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise defined, the technical terms or scientific terms used in the present application should have the ordinary meanings understood by those of ordinary skill in the field to which the present utility model belongs. The words such as "a" or "one" used in the specification and claims of the present application do not also represent a limitation of quantity, but mean that there is at least one. The words such as "including" or "comprising" mean that the elements or items appearing before "including" or "comprising" cover the elements or items listed after "including" or "comprising" and their equivalents, and do not exclude other elements or items. The words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect. The singular forms of "a", "the" and "said" used in the specification and appended claims of the present application are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0028] Please refer to Figures 1 - 11As shown in the figure, a high - security instant hot water faucet includes a water inlet pipe 1, a heating device, and a water outlet faucet 2 that are connected in sequence. When the heating device is not working, the water flowing in from the water inlet pipe 1 passes through the heating device and flows out as cold water from the water outlet faucet 2. When the heating device is working, the water flowing in from the water inlet pipe 1 is heated by the heating device and flows out as hot water from the water outlet faucet 2.

[0029] The heating device includes a water storage cavity, and a heating element is arranged in the water storage cavity to heat the water flow in the water storage cavity. Of course, the heating device can also be in other forms. In this embodiment, the heating device is preferably a cast - aluminum heating element 3.

[0030] In one embodiment, please refer to Figure 3 、 8 As shown in FIGS. 10, a first temperature controller 4 is installed on the surface of the cast - aluminum heating element 3. The first temperature controller 4 is turned on or off according to the surface temperature of the cast - aluminum heating element 3. The first temperature controller 4 is arranged on the power - connection line of the cast - aluminum heating element 3. When the surface temperature of the cast - aluminum heating element 3 detected by the first temperature controller 4 is greater than its upper - limit temperature, the first temperature controller 4 disconnects, causing the cast - aluminum heating element 3 to stop heating, effectively controlling the temperature of the cast - aluminum heating element 3 and improving the use safety.

[0031] The first temperature controller 4 uses an automatic - reset temperature controller, that is, when the surface temperature of the cast - aluminum heating element 3 detected by the first temperature controller 4 is lower than its upper - limit temperature, the first temperature controller 4 resets and works, causing the cast - aluminum heating element 3 to continue heating.

[0032] In another embodiment, please refer to Figure 3 、 9 As shown in FIGS. 11, a second temperature controller 5 is also installed on the surface of the cast - aluminum heating element 3. The second temperature controller 5 is also turned on or off according to the surface temperature of the cast - aluminum heating element 3. The second temperature controller 5 is connected in series with the first temperature controller 4, and the upper - limit temperature of the second temperature controller 5 is higher than the upper - limit temperature of the first temperature controller 4. When the first temperature controller 4 fails, the surface temperature of the cast - aluminum heating element 3 has exceeded the upper - limit temperature of the first temperature controller 4, but the first temperature controller 4 is still in a working state. When the surface temperature of the cast - aluminum heating element 3 reaches the upper - limit temperature of the second temperature controller 5, the second temperature controller 5 disconnects, causing the control board 9 to control the cast - aluminum heating element 3 to stop heating, further improving the use safety of the cast - aluminum heating element 3 and effectively preventing the safety hazards caused by the failure of the first temperature controller 4.

[0033] The second temperature controller 5 preferably uses a manual - reset temperature controller, that is, when the surface temperature of the cast - aluminum heating element 3 reaches or exceeds the upper - limit temperature of the second temperature controller 5, the second temperature controller 5 disconnects, and the cast - aluminum heating element 3 stops heating. Even if the surface temperature of the cast - aluminum heating element 3 drops, the second temperature controller 5 will not reset and work. It must be manually reset, greatly improving the use safety of the instant hot water faucet.

[0034] The first temperature controller 4 and the second temperature controller 5 are not disposable. Compared with the thermal protector, the reliability and safety of the instant hot water faucet during operation can be improved. Moreover, both the first temperature controller 4 and the second temperature controller 5 are arranged on the surface of the cast aluminum heating element 3, which facilitates the installation, maintenance and replacement of the first temperature controller 4 and the second temperature controller 5. In addition, the series connection of the first temperature controller 4 and the second temperature controller 5 provides multi-layer protection for the instant hot water faucet, greatly improving the safety of the instant hot water faucet.

[0035] In one embodiment, please refer to Figure 4 、 10 As shown in FIGS. 11, the cast aluminum heating element 3 is provided with a water inlet end 6 and a water outlet end 7. The water inlet end 6 is communicated with the water inlet pipe 1, and the water outlet end 7 is communicated with the water outlet faucet 2. A temperature sensor 8 for real-time monitoring of the outlet water temperature is arranged in the water outlet end 7, and the temperature sensor 8, the control board 9 and the display 10 are electrically connected in sequence.

[0036] The temperature sensor 8 real-time monitors the outlet water temperature of the water outlet end 7 and sends the monitoring signal to the control board 9. The control board 9 displays the real-time outlet water temperature on the display 10, which is convenient for the user to directly observe the outlet water temperature of the instant hot water faucet.

[0037] The control board 9 in the prior art is only used to display the real-time temperature monitored by the temperature sensor 8. In another embodiment, the control board also has a control function for the cast aluminum heating element 3, that is, the control board 9 compares the real-time outlet water temperature monitored by the temperature sensor 8 with the set temperature. When the real-time outlet water temperature is lower than the set temperature, the control board 9 controls the cast aluminum heating element 3 to heat and work. When the real-time outlet water temperature is higher than the set temperature, the control board 9 controls the cast aluminum heating element 3 to stop heating, so that the outlet water temperature is kept within the set temperature range. At this time, the first temperature controller 4 and the second temperature controller 5 can be connected in series with the control board 9.

[0038] Since the temperature sensor 8 is arranged at the water outlet end 7, the error between the set temperature and the outlet water temperature is reduced, the water temperature detection accuracy of the temperature sensor 8 is improved, the water temperature flowing out of the water outlet faucet 2 is more accurately reflected, and further, the situation of being scalded when using the faucet with too high water temperature can be prevented, improving the safety during use.

[0039] In one embodiment, a flow regulating valve 11 is provided on the water inlet pipe 1, and the flow regulating valve 11 is used to regulate the water flow rate of the water inlet pipe 1 flowing to the cast aluminum heating element 3. In this embodiment, the flow regulating valve 11 includes a valve core, a valve stem 12 and a housing 13. The valve core is arranged inside the water inlet pipe 1 and not visible. The valve stem 12 is in driving connection with the valve core. One end of the valve stem 12 away from the valve core is located outside the water inlet pipe 1 and is sleeved with a housing 13. Rotating the housing 13 drives the valve stem 12 and the valve core to rotate, so as to regulate the water flow rate of the water inlet pipe 1 flowing to the cast aluminum heating element 3. Among them, a trigger block 14 is provided on the valve stem 12. The trigger block 14 rotates together with the valve stem 12. A micro switch 16 is provided on the rotation track 15 of the trigger block 14. The micro switch 16 is electrically connected to the control board 9. When the valve stem 12 rotates to a certain position, the trigger block 14 triggers the micro switch 16, and the micro switch 16 is turned on to make the control board 9 control the cast aluminum heating element 3 to start heating. When the micro switch 16 resets, the control board 9 controls the cast aluminum heating element 3 to stop heating.

[0040] In this embodiment, please refer to Figure 7 As shown, the rotation track 15 of the trigger block 14 includes a starting position 17, an intermediate position 18 and a termination position 19. The starting position 17, the intermediate position 18 and the termination position 19 are located on the same arc. The micro switch 16 is arranged between the intermediate position 18 and the termination position 19 and is close to the intermediate position 19.

[0041] Among them, the arc length from the starting position 17 to the intermediate position 18 is greater than the arc length from the intermediate position 18 to the termination position 19. The arc length of the trigger block 14 is greater than or equal to the arc length from the intermediate position 18 to the termination position 19, and the arc length of the trigger block 14 is less than the arc length from the starting position 17 to the intermediate position 18.

[0042] When the trigger block 14 is at the starting position 17, one end of the trigger block 14 is at the starting position 17, and the other end is between the starting position 17 and the intermediate position 18. When the trigger block 14 rotates with the valve stem 12 from the intermediate position 18 to the termination position 19, the trigger block 14 triggers the micro switch 16 to move downward, so that the power connection circuit of the control board 9 is turned on, and the control board 9 thus controls the cast aluminum heating element 3 to heat. The trigger block 14 continues to rotate to the termination position 19. At this time, the micro switch 16 is still in the triggered state. Then, the trigger block 14 rotates from the termination position 19 to the intermediate position 18. When the trigger block 14 rotates to the intermediate position 18, the trigger block 14 does not trigger the micro switch 16, and the micro switch 16 returns to the initial state. The control board 9 controls the cast aluminum heating element 3 to stop heating, and the trigger block 14 continues to rotate to the starting position 17.

[0043] In this embodiment, when the trigger block 14 rotates from the starting position 17 to the intermediate position 18, the water flow rate from the water inlet pipe 1 to the cast aluminum heating element 3 gradually increases, and cold water flows out of the water outlet faucet 2. When the trigger block 14 triggers the microswitch 16, the cast aluminum heating element 3 starts to work. When the trigger block 14 rotates from the intermediate position 18 to the termination position 19, the water flow rate and temperature from the water inlet pipe 1 to the cast aluminum heating element 3 gradually decrease, and hot water flows out of the water outlet faucet 2. When the heating power of the cast aluminum heating element 3 is constant, the outlet water temperature gradually increases. When the heating power of the cast aluminum heating element 3 can be adjusted through the control board 9, the outlet water temperature can be kept constant. On the contrary, when the trigger block 14 rotates from the termination position 19 to the intermediate position 18, the water flow rate gradually increases, and the outlet water temperature gradually decreases or remains constant. When the trigger block 14 rotates from the intermediate position 18 to the starting position 17, cold water flows out of the water outlet faucet, and the water flow rate gradually decreases.

[0044] In order to effectively limit the rotation of the trigger block 14, a limiting block 20 is provided on the rotation trajectory of the trigger block 14. The limiting block 20 is close to the termination position 19. When the trigger block 14 rotates to the termination position 19, the trigger block 14 abuts against the limiting block 20. Of course, the limiting block 20 can also be arranged on the rotation trajectories of the housing 13 and / or the valve stem 12.

[0045] The rotation of the trigger block 14 enables the water outlet faucet 2 to supply cold water first and then hot water. Compared with the bidirectional rotation of the prior art, it can reduce the probability of being directly scalded when hot water is selected when cold water is needed. And when rotating from the termination position 19 to the starting position 18, a large flow of cold water can take away the remaining heat in the cast aluminum heating element 3.

[0046] The above is only the preferred embodiment of the present utility model and is not intended to limit this application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the scope of protection of this application.

Claims

1. A high-safety instant hot water faucet, characterized in that: It includes a heating device and a first temperature controller. The first temperature controller is installed on the surface of the heating device. The first temperature controller is turned on or off according to the surface temperature of the heating device. The first temperature controller is arranged on the power connection line of the heating device; The heating device is provided with a water inlet end and a water outlet end. The water inlet end is communicated with a water inlet pipe. A flow regulating valve is arranged on the water inlet pipe; The flow regulating valve includes a valve core and a valve rod. The rotation of the valve rod drives the rotation of the valve core. A trigger block is arranged on the valve rod. The trigger block rotates together with the valve rod. A microswitch is arranged on the rotation track of the trigger block. The microswitch is connected in series with the first temperature controller.

2. The high-safety instant hot water faucet according to claim 1, wherein: It further includes a second temperature controller. The second temperature controller is also arranged on the surface of the heating device. The second temperature controller is turned on or off according to the surface temperature of the heating device. The second temperature controller is connected in series with the first temperature controller.

3. The high-security instant hot water faucet according to claim 2, characterized in that: The upper limit temperature of the second temperature controller is higher than the upper limit temperature of the first temperature controller.

4. The high-security instant hot water faucet according to claim 2, wherein: The second temperature controller is a manually reset temperature controller.

5. The high-security instant hot water faucet according to claim 1, characterized in that: The first temperature controller is an automatic reset temperature controller.

6. The high-security instant hot water faucet according to claim 1, wherein: The water outlet end is provided with a temperature sensor. The temperature sensor is electrically connected to a control board. The control board is electrically connected to a display.

7. The high-security instant hot water faucet according to claim 6, wherein: The control board is respectively electrically connected to the heating device and the first temperature controller.

8. The high-security instant hot water faucet according to claim 1, wherein: The heating device is a cast aluminum heating element.

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