Heating system of instant heating faucet

Abstract

The heating system of the instant heating faucet comprises a heating device and a control panel which are electrically connected, a protection device is arranged outside the heating device, and the control panel is arranged on the periphery of the protection device. The protection device is arranged outside the heating device, electronic elements such as the control panel are isolated from the heating device, heat generated by the heating device is prevented from directly acting on the electronic elements, the insulation and heat insulation effects are achieved, the service life of internal elements is prolonged, the service life of the instant heating faucet is prolonged, and safety such as electric leakage prevention is improved.

Description

Technical Field

[0001] The present application relates to the technical field of faucets, and particularly to a heating system of an instant hot water faucet. Background Art

[0002] An instant hot water faucet, also known as an electric hot water faucet, refers to a faucet that can discharge hot water within 3 s to 5 s after being turned on. In recent years, due to the advantages of instant hot water faucets, such as being able to discharge both hot water and cold water, easy installation, and simple operation, they have been widely used. When the heating device in an existing instant hot water faucet is in use, a large amount of heat will be generated, and the heat will be dissipated and conducted to other parts inside the faucet, affecting the service life of each component inside the faucet. Moreover, long-term heating will cause the outside of the main body of the hot water faucet to heat up, and even the temperature will be too high, resulting in a risk of scalding the user. Or there is a probability that the heating device will be damaged after long-term use, leading to electric leakage. Due to insufficient internal insulation performance, there is a risk of electric shock to consumers. Utility Model Content

[0003] In order to solve the above-mentioned drawbacks and deficiencies in the prior art, the purpose of the present application is to provide a heating system of an instant hot water faucet, which realizes the isolation between the heating device and the electronic components, protects the normal use of the electronic components, and also avoids the heat generated by the heating device from being directly conducted to the outer surface of the machine, while increasing the insulation of the machine.

[0004] To achieve the above object, a heating system of an instant hot water faucet according to the present application includes a heating device and a control board that are electrically connected. A protection device is provided outside the heating device, and the control board is disposed on the outer periphery of the protection device.

[0005] Further, the protection device is a protective sleeve, and the protective sleeve is sleeved on the heating device.

[0006] Further, the protective sleeve is made of an insulating material, a high-temperature resistant material, or an insulating and high-temperature resistant material.

[0007] Further, the heating device is a cast aluminum heating element.

[0008] Further, it further includes a first temperature controller, which is used to detect the surface temperature of the heating device and turn on or off according to the surface temperature of the heating device. The first temperature controller is electrically connected to the control board.

[0009] Further, it further includes a second temperature controller, which is also used to detect the surface temperature of the heating device and turn 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.

[0010] Further, the upper limit temperature of the second thermostat is higher than that of the first thermostat.

[0011] Further, the second thermostat is a manually reset thermostat.

[0012] Further, the first thermostat is an automatic reset thermostat.

[0013] Further, the heating device is provided with a water inlet end and a water outlet end. A temperature sensor for detecting the water outlet temperature 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 screen.

[0014] Compared with the prior art, the utility model has the following beneficial technical effects: A protection device is arranged outside the heating device, so that electronic components such as the control board are isolated from the heating device, preventing the heat generated by the heating device from directly acting on the electronic components, playing a role of insulation and heat insulation, protecting the electronic components, prolonging the service life of the electronic components, and further prolonging the service life of the instant hot water faucet and improving safety such as anti-electric leakage. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 is Figure 1 the explosion diagram in

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

[0018] Figure 4 is Figure 2 the explosion diagram of the protective sleeve, 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 explosion diagram of

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

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

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

[0024] Figure 10 This is the control schematic diagram of the cast aluminum heating element in an embodiment of the present application. Detailed implementation manners

[0025] 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 the implementation manners consistent with the present application. On the contrary, they are only examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0026] 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 be understood in the ordinary sense by those of ordinary skill in the field to which the present utility model belongs. The words such as "a" or "an" used in the specification and claims of the present application do not indicate a limitation in quantity, but rather indicate the existence of at least one. The words such as "including" or "comprising" mean that the elements or objects appearing before "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. 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.

[0027] Please refer to Figures 1 - 10 As shown, a heating system of an instant hot water faucet includes a heating device. The heating device is provided with a water inlet end 2 and a water outlet end 3. The water inlet end 2 is communicated with a water inlet pipe 9, and the water outlet end 3 is communicated with a water outlet faucet 8. The water flowing into the water inlet pipe 9 is heated by the heating device to form hot water and is provided externally through the water outlet faucet 8.

[0028] The water outlet end 3 is provided with a temperature sensor 4 for detecting the outlet water temperature. A protection device is provided outside the heating device. A control board 5 and a display 6 are provided on the outer periphery of the protection device. The control board 5 is electrically connected to the temperature sensor 4, the heating device and the display 6 respectively.

[0029] The protection device preferably is the protective sleeve 7. Of course, the protection device can also be in other forms, as long as it can isolate electronic components such as the display 6 and the control board 5 from the heating device. In this embodiment, the protective sleeve 7 is directly sleeved on the outer periphery of the heating device. The protective sleeve 7 can be made of insulating material to prevent electric leakage caused by the breakage of the heating device after long-term use, improving the electric leakage prevention performance of the instant hot water faucet, and further improving the use safety of the instant hot water faucet. Moreover, the protective sleeve 7 made of insulating material also has a certain heat insulation effect, which can prevent the heat generated by the heating device from directly acting on the electronic components. Of course, the protective sleeve 7 can also be made of high-temperature resistant and heat-insulating material to prevent the heat generated by the heating device from directly acting on the electronic components. The protective sleeve 7 is preferably made of insulating, high-temperature resistant and heat-insulating material, which can not only prevent the heat generated by the heating device from directly acting on the electronic components, protect the electronic components, extend the service life of the electronic components, and further extend the service life of the instant hot water faucet, but also play a role in preventing electric leakage.

[0030] 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 the cast aluminum heating element 1.

[0031] The temperature sensor 4 monitors the outlet water temperature of the water outlet end 3 in real time and sends the monitoring signal to the control board 5. The control board 5 displays the real-time outlet water temperature on the display 6, which is convenient for the user to directly observe the outlet water temperature of the instant hot water faucet. Of course, the control board 5 can also compare the real-time outlet water temperature with the set temperature. When the real-time outlet water temperature is lower than the set temperature, the control board 5 controls the cast aluminum heating element 1 to heat and work. When the real-time outlet water temperature is higher than the set temperature, the control board 5 controls the cast aluminum heating element 1 to stop heating, so that the outlet water temperature is kept constant within the set temperature range. Since the temperature sensor 4 is arranged at the water outlet end 3, the error between the set temperature and the outlet water temperature is reduced, the water temperature detection accuracy of the temperature sensor 4 is improved, and the water temperature flowing out of the water faucet 8 is more accurately reflected. Furthermore, the situation of being scalded when opening the instant hot water faucet due to too high water temperature can be prevented, and the use safety is improved.

[0032] In one embodiment, please refer to Figure 9 As shown, a first temperature controller 10 is arranged on the cast aluminum heating element 1. The first temperature controller 10 is arranged on the surface of the cast aluminum heating element 1 and most of it is exposed outside the protective sleeve 7. The first temperature controller 10 is used to detect the surface temperature of the cast aluminum heating element 1 and realize connection or disconnection according to the surface temperature of the cast aluminum heating element 1. The first temperature controller 10 is electrically connected to the control board 5. When the surface temperature of the cast aluminum heating element 1 detected by the first temperature controller 10 is greater than its upper limit temperature, the first temperature controller 10 disconnects, so that the control board 5 controls the cast aluminum heating element 1 to stop heating, effectively controlling the temperature of the cast aluminum heating element 1 and improving the use safety.

[0033] The first thermostat 10 uses an automatic reset thermostat. That is, when the surface temperature of the cast aluminum heating element 1 detected by the first thermostat 10 is lower than its upper limit temperature, the first thermostat 10 resets and operates, enabling the control board 5 to control the cast aluminum heating element 1 to continue heating.

[0034] In another embodiment, please refer to Figure 10 As shown, a second thermostat 11 is also provided on the cast aluminum heating element 1. The second thermostat 11 is disposed on the surface of the cast aluminum heating element 1 and most of it is exposed outside the protective sleeve 7. The second thermostat 11 is also used to detect the surface temperature of the cast aluminum heating element 1 and turn on or off according to the surface temperature of the cast aluminum heating element 1. The second thermostat 11 is connected in series with the first thermostat 10, and the upper limit temperature of the second thermostat 11 is higher than the upper limit temperature of the first thermostat 10. When a failure occurs in the first thermostat 10, the surface temperature of the cast aluminum heating element 1 has exceeded the upper limit temperature of the first thermostat 10, but the first thermostat 10 is still in the working state. When the surface temperature of the cast aluminum heating element 1 reaches the upper limit temperature of the second thermostat 11, the second thermostat 11 disconnects, enabling the control board 5 to control the cast aluminum heating element 1 to stop heating, further improving the use safety of the cast aluminum heating element 1 and effectively preventing potential safety hazards caused by the failure of the first thermostat 10.

[0035] The second thermostat 11 preferably uses a manual reset thermostat. That is, when the surface temperature of the cast aluminum heating element 1 reaches or exceeds the upper limit temperature of the second thermostat 11, the second thermostat 11 disconnects and the cast aluminum heating element 1 stops heating. Even if the surface temperature of the cast aluminum heating element 1 drops, the second thermostat 11 will not reset and operate. Manual reset is required, greatly improving the use safety of the instant hot water faucet.

[0036] The first thermostat 10 and the second thermostat 11 are disposed on the surface of the cast aluminum heating element 1, facilitating the installation, maintenance, and replacement of the first thermostat 10 and the second thermostat 11.

[0037] In one embodiment, a flow regulating valve 12 is provided on the water inlet pipe 9. The flow regulating valve 12 is used to regulate the water flow rate of the water inlet pipe 9 flowing to the cast aluminum heating element 1. In this embodiment, the flow regulating valve 12 includes a valve core, a valve stem 13 and a housing 14. The valve core is arranged inside the water inlet pipe 9 and not shown. The valve stem 13 is in transmission connection with the valve core. One end of the valve stem 13 away from the valve core is located outside the water inlet pipe 9 and is sleeved with a housing 14. Rotating the housing 14 drives the valve stem 13 and the valve core to rotate, so as to regulate the water flow rate of the water inlet pipe 9 flowing to the cast aluminum heating element 1. Among them, a trigger block 15 is provided on the valve stem 13. The trigger block 15 rotates together with the valve stem 13. A microswitch 17 is provided on the rotation track 16 of the trigger block 15. The microswitch 17 is electrically connected to the control board 5. When the valve stem 13 rotates to a certain position, the trigger block 15 triggers the microswitch 17, and the microswitch 17 is turned on to make the control board 5 control the cast aluminum heating element 1 to start heating. When the microswitch 17 resets, the control board 5 controls the cast aluminum heating element 1 to stop heating.

[0038] In order to better fix the trigger block 15, a connecting plate 21 is fixed on the valve stem 13, and the trigger block 15 protrudes from the outer periphery of the connecting plate 21.

[0039] In this embodiment, please refer to Figure 7 As shown, the rotation track 16 of the trigger block 15 includes a starting position 18, an intermediate position 19 and a terminating position 20. The starting position 18, the intermediate position 19 and the terminating position 20 are located on the same arc. The microswitch 17 is arranged between the intermediate position 19 and the terminating position 20 and is close to the intermediate position 19.

[0040] Among them, the arc length from the starting position 18 to the intermediate position 19 is greater than the arc length from the intermediate position 19 to the terminating position 20. The arc length of the trigger block 15 is greater than or equal to the arc length from the intermediate position 19 to the terminating position 20, and the arc length of the trigger block 15 is less than the arc length from the starting position 18 to the intermediate position 19.

[0041] When the trigger block 15 is at the starting position 18, one end of the trigger block 15 is at the starting position 18, and the other end is between the starting position 18 and the intermediate position 19. When the trigger block 15 rotates with the valve stem 13 to the intermediate position 19, the trigger block 15 triggers the microswitch 17 to move downward, so that the power connection circuit of the control board 5 is turned on, and the control board 5 thus controls the cast aluminum heating element 1 to heat and work. The trigger block 15 continues to rotate to the terminating position 20. At this time, the microswitch 17 is still in the triggered state. Then, the trigger block 15 rotates from the terminating position 20 to the intermediate position 19 until the trigger block 15 does not trigger the microswitch 17, and the microswitch 17 returns to the initial state. The control board 5 controls the cast aluminum heating element 1 to stop heating, and the trigger block 15 continues to rotate to the starting position 18.

[0042] In this embodiment, when the trigger block 15 rotates from the starting position 18 to the middle position 19, the water flow from the water inlet pipe 7 to the cast aluminum heating element 1 gradually increases, and cold water flows out of the water faucet 8. When the trigger block 15 triggers the microswitch 17, the cast aluminum heating element 1 starts to work. When the trigger block 15 moves from the middle position 19 to the end position 20, the water flow from the water inlet pipe 7 to the cast aluminum heating element 1 gradually decreases. The heating power of the cast aluminum heating element 1 can be a constant power. At this time, the temperature of the hot water out of the water faucet 8 gradually increases. Of course, the heating power of the cast aluminum heating element 1 can also be a variable power, which can make the temperature of the hot water out of the water faucet 8 constant within a certain range. Conversely, the trigger block 15 rotates from the end position 20 to the middle position 19, the water flow gradually increases, the hot water temperature gradually decreases or remains constant within a certain temperature range, the trigger block 15 rotates from the middle position 19 to the starting position 18, cold water flows out of the water faucet, and the water flow gradually decreases.

[0043] When the trigger block 15 is at the starting position 18, the water faucet does not discharge water. When the trigger block 15 rotates from the starting position 18 to the middle position 19, the water faucet discharges cold water. When the trigger block 15 rotates from the middle position 19 to the end position 20, the water faucet discharges hot water. When the trigger block 15 rotates from the end position 20 to the middle position 19, the water faucet discharges hot water. When the trigger block 15 rotates from the middle position 19 to the starting position 18, the water faucet discharges cold water. When the trigger block 15 rotates to the starting position 18, the water faucet does not discharge water.

[0044] The rotation of the trigger block 15 causes the water faucet 8 to provide cold water first and then hot water. Compared with the two-way rotation of the prior art, it can reduce the probability of being scalded directly by choosing hot water when cold water is needed, and when rotating from the end position 20 to the starting position 18, the excess heat in the cast aluminum heating element 1 can be taken away by a large flow of cold water.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A heating system for an instant hot water faucet, characterized in that: It includes a heat generating device and a control board which are electrically connected. A protection device is provided outside the heat generating device, and the control board is arranged on the outer periphery of the protection device. The protection device is a protective sleeve which is sleeved on the heat generating device, and the protective sleeve is made of insulating material, high-temperature resistant material or insulating and high-temperature resistant material.

2. The heating system of the instant hot water faucet according to claim 1, wherein: The heat generating device is a cast aluminum heating element.

3. The heating system of the instant hot water faucet according to claim 1, wherein: It further includes a first temperature controller which is used to detect the surface temperature of the heat generating device and turn on or off according to the surface temperature of the heat generating device, and the first temperature controller is electrically connected to the control board.

4. The heating system of the instant hot water faucet according to claim 3, wherein: It further includes a second temperature controller which is also used to detect the surface temperature of the heat generating device and turn on or off according to the surface temperature of the heat generating device, and the second temperature controller is connected in series with the first temperature controller.

5. The heating system of the instant hot water faucet according to claim 4, characterized in that: The upper limit temperature of the second temperature controller is higher than that of the first temperature controller.

6. The heating system of the instant hot water faucet according to claim 4, characterized in that: The second temperature controller is a manual reset temperature controller.

7. The heating system of the instant hot water faucet according to claim 3, wherein: The first temperature controller is an automatic reset temperature controller.

8. The heating system of the instant hot water faucet according to claim 1, wherein: The heat generating device is provided with a water inlet end and a water outlet end. A temperature sensor for detecting the water outlet temperature 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 a display screen.

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