Instantaneous heater with water detection function

Abstract

The utility model discloses a kind of instant heater with detection water inlet function, including shell, instant heating pipe and circuit board, instant heating pipe is fixed in shell, circuit board is fixed in the periphery of shell and circuit board is electrically connected with instant heating pipe, one end of instant heating pipe is connected with water inlet pipeline, hot water outlet is also provided on instant heating pipe, further include infrared detection piece, and infrared detection piece is electrically connected with the circuit board, the water inlet pipeline includes at least one water inlet pipe, the water inlet pipe is provided with movable inductive piece, at least one side of the water inlet pipe corresponding infrared detection piece position is set into transparent shape;This instant heater, by setting infrared detection piece on circuit board and infrared detection piece is close to water inlet pipe, so that infrared detection piece can detect whether there is water in water inlet pipe and feedback to circuit board, and then realize circuit board control instant heating pipe on-off power, play dry-burning effect.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to an instant heater with a water inlet detection function. Background Technology

[0002] The existing instant water heater, as seen in Chinese Utility Model Patent CN214964624U, entitled "Casing of Instant Water Dispenser," authorized on December 3, 2021, includes a casing, a guide column, a magnetic float, and a reed switch mounted on the casing. The top of the casing has an installation opening. The lower end of the guide column extends into the casing, and its upper end passes through the installation opening and extends out of the casing. The guide column and the installation opening are locked together. The reed switch is mounted on the guide column, and the magnetic float is movably mounted on the guide column. The upper end of the guide column extends through the installation opening and extends out of the casing. The locking of the guide column and the installation opening securely fixes the guide column inside the casing, making installation very simple. Then, the magnetic float is movably mounted on the guide column to complete assembly. Assembly is very simple, and the locking of the installation opening prevents the guide column from loosening, ensuring a secure installation.

[0003] However, the instant hot water dispenser with the above structure still has the following shortcomings: (1) The above box is a balance water tank, which is equipped with components such as guide column, magnetic float ball and reed switch to detect the water level in the box and prevent the pipe heater from burning dry during operation. However, it involves many components, resulting in a high overall product cost, and the installation between the components is also more complicated and time-consuming. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an instant heater with a simple structure and easy installation, and with a water inlet detection function.

[0005] The purpose of this utility model is achieved as follows: An instantaneous heater with water inlet detection function includes a housing, an instantaneous heating element, and a circuit board. The instantaneous heating element is fixed inside the housing, and the circuit board is fixed to the outer periphery of the housing and electrically connected to the instantaneous heating element. One end of the instantaneous heating element is connected to a water inlet pipe, and the instantaneous heating element also has a hot water outlet. The heater is characterized by further including an infrared detector electrically connected to the circuit board. The water inlet pipe includes at least one inlet pipe with an inlet and an outlet, the inlet being lower than the outlet. A movable sensing element is disposed inside the inlet pipe, and the infrared detector is located at the inlet. On one side of the water pipe, at least one side of the water inlet pipe corresponding to the position of the infrared detector is made transparent. This instant heater with water inlet detection function uses an infrared detector set on the circuit board and placed close to the water inlet pipe. This allows the infrared detector to effectively detect whether water is passing through the water inlet pipe and provide feedback to the circuit board. This enables the circuit board to control the power supply to the instant heating element, thus preventing dry burning. The infrared detector and the water inlet pipe have simple structures and are easy to obtain. Their installation is also relatively simple. Furthermore, the floating component can significantly improve the detection accuracy of the infrared detector and facilitate its stable operation.

[0006] The objective of this utility model can also be achieved by the following technical measures: Specifically, the water inlet pipe is a vertical pipe, and the sensing element is a floating element. The floating element includes a central support and a spiral outer wall wrapped around the outside of the central support. The inner diameter of the lower opening of the vertical pipe is smaller than the maximum outer diameter of the spiral outer wall. On the one hand, the spiral outer wall facilitates the movement of the entire floating element by the water flow, and at the same time, the spiral outer wall does not affect the water flow through the floating element and towards the instant heating pipe. On the other hand, the spiral outer wall wrapped around the outside of the central support can also achieve good cooperation with the infrared detection element, which is conducive to the stable operation of the infrared detection element.

[0007] Specifically, the lower opening of the vertical tube is fixed with a hollow tube cover, the inner diameter of which is smaller than the maximum outer diameter of the spiral outer wall; so that the floating part will not detach from the water inlet pipe, and the hollow tube cover will not affect the connection between the external water source and the water inlet pipe.

[0008] Specifically, it further includes a heat sink. A thyristor is installed on the circuit board. One end of the heat sink is fixed to the circuit board and is attached to the thyristor. The other end of the heat sink is sleeved on the outer periphery of the water inlet pipe. The heat sink attached to the thyristor can effectively absorb and dissipate the heat of the thyristor, ensuring the stable operation of the thyristor. At the same time, the other end of the heat sink sleeved on the water inlet pipe can effectively achieve heat exchange between the two, which is beneficial to the heat dissipation of the heat sink and also has a certain preheating effect on the water in the water inlet pipe. Its design is ingenious and has a good implementation effect.

[0009] Specifically, it further includes a water inlet pipe, the upper end of which is inserted into a hollow tube cap, and the lower end of which is connected to an external water source. The other end of the heat sink is fitted around the water inlet pipe. The water inlet pipe achieves heat exchange with the heat sink through the water inlet pipe fixed below it. It is easy to implement and has good implementation effect.

[0010] Specifically, a connecting post extends from the outer side of the housing, and the circuit board is fixed on the connecting post. A light-shielding enclosure is fixed on the circuit board, and part of the water inlet pipe and the infrared detection device are located inside the light-shielding enclosure. The light-shielding enclosure can play a good role in blocking light and prevent external light from affecting the normal operation of the infrared detection device.

[0011] Specifically, a connecting lug extends from one side of the light-shielding enclosure, one side of the circuit board is attached to the connecting post, and the light-shielding enclosure and the connecting lug are attached to the other side of the circuit board. A connecting screw passes through the connecting lug and the circuit board in sequence and is fixedly connected to the connecting post to achieve a stable connection between the light-shielding enclosure and the circuit board on the outer shell.

[0012] Specifically, it also includes a water pump, which is fixed on the outside of the housing. The inlet of the water pump is connected to the other end of the water inlet pipe, and the outlet of the water pump is connected to one end of the instant heating tube. This facilitates the automatic flow of water in the water inlet pipe into the instant heating tube for heating.

[0013] Specifically, it further includes an intermediate box, which is placed on the shell and the water pump. The intermediate box is provided with a first connecting cavity and a second connecting cavity. The two ends of the first connecting cavity are respectively connected to the other end of the water inlet pipe and the inlet of the water pump. The two ends of the second connecting cavity are respectively connected to the outlet of the water pump and one end of the instant heating pipe. The water circuit connection between the water inlet pipe, the water pump and the instant heating pipe is realized through the intermediate box, and the implementation effect is good.

[0014] Specifically, it further includes a protective cover with elastic hooks extending from the side openings of the protective cover. The two sides of the housing extend outwards to form locking portions, on which the elastic hooks are engaged. The instant heating element is equipped with a water outlet pipe with a hot water outlet. The housing, circuit board, instant heater, and inlet pipe are all located inside the protective cover. The protective cover has a clearance opening corresponding to the water outlet pipe. This ensures that the protective cover effectively prevents the housing, circuit board, instant heater, and inlet pipe from being affected by the external environment, promoting stable operation of each component. Simultaneously, the protective cover does not affect the connection between the water outlet pipe and the outside.

[0015] The beneficial effects of this utility model are as follows: (1) This instant heater with water inlet detection function has an infrared detector set on the circuit board and the infrared detector is close to the water inlet pipe. The infrared detector can detect whether there is water in the water inlet pipe and feed back to the circuit board. In this way, the circuit board controls the power on and off of the instant heating tube, which can prevent dry burning. The infrared detector and the water inlet pipe have simple structures and are easy to obtain. At the same time, the installation of both is also relatively simple. In addition, the floating part can improve the detection accuracy of the infrared detector and is conducive to the stable operation of the infrared detector.

[0016] (2) On the one hand, the spiral outer wall facilitates the movement of the entire floating component by the water flow, and at the same time, the spiral outer wall will not affect the water flow through the floating component and flow to the instant heating pipe. On the other hand, the spiral outer wall wrapped around the outer perimeter of the central support can also achieve good cooperation with the infrared detection component, which is conducive to the stable operation of the infrared detection component.

[0017] (3) The heat sink attached to the thyristor can absorb the heat of the thyristor and dissipate it well, ensuring the stable operation of the thyristor. At the same time, the other end of the heat sink sleeved on the water inlet pipe can achieve good heat exchange between the two, which is conducive to the heat dissipation of the heat sink and also has a certain preheating effect on the water in the water inlet pipe. Its setting is ingenious and its implementation effect is good. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the instantaneous heater with water inlet detection function of this utility model.

[0019] Figure 2 This is a cross-sectional view of the instantaneous heater with water inlet detection function of this utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A.

[0021] Figure 4 This is a breakdown diagram of the instantaneous heater with water inlet detection function of this utility model.

[0022] Figure 5 This is an exploded view of another embodiment of the instantaneous heater with water inlet detection function of this utility model.

[0023] Figure 6 This is a cross-sectional view of another embodiment of the instantaneous heater with water inlet detection function of this utility model.

[0024] Figure 7 This is the electrical schematic diagram of the instantaneous heater with water inlet detection function of this utility model. Detailed Implementation

[0025] The present patent will be further described below with reference to the accompanying drawings and embodiments: The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures, and should not be construed as limiting the present patent; In order to better illustrate the embodiments of the present patent, some parts in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size; It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0026] The terms "first," "second," etc., used in this patent do not indicate any order, quantity, or importance, but are merely for distinction. The terms "one," "a kind," etc., used in this patent do not indicate a limitation on quantity, but rather indicate the presence of at least one of the mentioned objects. The terms indicating direction or location used in this patent, such as "top," "bottom," "side," "longitudinal," "lateral," "middle," "center," "outer," "inner," "horizontal," "vertical," "left," "right," "above," "below," etc., reflect relative positions, not absolute positions; those skilled in the art can understand the specific meaning of these terms according to the specific circumstances.

[0027] Example 1, combined with Figures 1 to 4 As shown, an instant heater with water inlet detection function includes a housing 1, an instant heating tube 2, and a circuit board 3. The instant heating tube 2 is fixed inside the housing 1, and the circuit board 3 is fixed to the outer periphery of the housing 1 and electrically connected to the instant heating tube 2. One end of the instant heating tube 2 is connected to a water inlet pipe, and the instant heating tube 2 is also provided with a hot water outlet 21. The feature is that it also includes an infrared detector 4, and the infrared detector 4 is electrically connected to the circuit board 3. The water inlet pipe includes at least one water inlet pipe 5, which includes an inlet 54 and an outlet 55. The inlet 54 is lower than the outlet 55. A movable sensing element 6 is provided inside the water inlet pipe 5. The infrared detector 4 is located on one side of the water inlet pipe 5, and at least one side of the water inlet pipe 5 corresponding to the position of the infrared detector 4 is made transparent.

[0028] More specifically, the infrared detector 4 is located on the upper part of the circuit board 3, and the infrared detector 4 is located on one side of the upper part of the water inlet pipe 5.

[0029] As a specific solution, the water inlet pipe 5 is a vertical pipe, and the sensing element 6 is a floating element. The floating element includes a central support 61 and a spiral outer wall 62 wrapped around the outside of the central support 61. The inner diameter of the lower opening of the vertical pipe is smaller than the maximum outer diameter of the spiral outer wall 62.

[0030] More specifically, the floating component can also be a small impeller, which can also achieve the purpose of floating in the inlet pipe 5 under the drive of water.

[0031] In this embodiment, a hollow tube cap 51 is fixed to the lower opening of the vertical tube body, and the inner diameter of the hollow tube cap 51 is smaller than the maximum outer diameter of the spiral outer wall 62.

[0032] In this embodiment, an L-shaped connecting pipe 52 is also included, the upper end of which is rotatably fitted around the lower outer periphery of the vertical pipe body.

[0033] As a more specific embodiment, a connecting post 11 extends from the outer side of the housing 1, the circuit board 3 is fixed on the connecting post 11, a light-shielding enclosure 32 is fixed on the circuit board 3, and part of the water inlet pipe 5 and the infrared detector 4 are located inside the light-shielding enclosure 32.

[0034] In this embodiment, a connecting lug 321 extends from one side of the light-shielding enclosure 32, and one side of the circuit board 3 is attached to the connecting post 11. The light-shielding enclosure 32 and the connecting lug 321 are attached to the other side of the circuit board 3. A connecting screw passes through the connecting lug 321 and the circuit board 3 in sequence and is fixedly connected to the connecting post 11; the connecting screw is not shown.

[0035] As a preferred embodiment, it also includes a water pump 8, which is fixed to the outside of the housing 1. The inlet of the water pump 8 is connected to the other end of the water inlet pipe 5, and the outlet of the water pump 8 is connected to one end of the instant heating pipe 2.

[0036] In this embodiment, an intermediate box 9 is also included. The intermediate box 9 is placed on the housing 1 and the water pump 8. The intermediate box 9 is provided with a first connecting cavity 91 and a second connecting cavity 92. The two ends of the first connecting cavity 91 are respectively connected to the other end of the water inlet pipe 5 and the inlet of the water pump 8. The two ends of the second connecting cavity 92 are respectively connected to the outlet of the water pump 8 and one end of the instant heating pipe 2.

[0037] As a preferred embodiment, it also includes a protective cover 10, with elastic hooks 101 extending from the side opening of the protective cover 10. The two sides of the housing 1 extend outwards to form snap-fit ​​portions 12, and the elastic hooks 101 are snapped onto the snap-fit ​​portions 12. The instant heating tube 2 is provided with a water outlet pipe 22, and the water outlet pipe 22 has a hot water outlet 21. The housing 1, circuit board 3, instant heating tube 2 and water inlet pipe are all located inside the protective cover 10. The protective cover 10 has clearance openings 102 at the lower end of the L-shaped connecting pipe 52 and the water outlet pipe 22.

[0038] Example 2, combined with Figure 5 and Figure 6 As shown, this embodiment is similar to embodiment one, except that it also includes a heat sink 7. A thyristor 31 is provided on the circuit board 3. One end of the heat sink 7 is fixed on the circuit board 3 and the heat sink 7 is attached to the thyristor 31. The other end of the heat sink 7 is sleeved on the outer periphery of the water inlet pipe 5.

[0039] In this embodiment, a water inlet tube 53 is also included. The upper end of the water inlet tube 53 is inserted into the hollow tube cap 51, and the lower end of the water inlet tube 53 is connected to an external water source. The other end of the heat sink 7 is sleeved on the outer periphery of the water inlet tube 53.

[0040] like Figure 7 The diagram shown is an electrical schematic of this invention. The infrared detection element 4 includes an infrared emitting tube and an infrared receiving tube. The infrared emitting tube continuously emits a red line into the water inlet pipe 5. When water flows through the water inlet pipe 5, the water flow pushes the sensing element 6 upwards. Both the water flow and the sensing element 6 reflect the red line (the reflection effect of the sensing element 6 is better), allowing the reflected red line to be received by the infrared receiving tube. The infrared receiving tube then outputs a low-level signal to the control module on the circuit board 3, enabling the circuit board 3 to control the instant heating element 2 to operate. Conversely, when no water flows through the water inlet pipe 5, the sensing element 6 falls to a position near the water inlet due to its own gravity. That is, the sensing element 6 does not move upwards, the red line emitted by the infrared emitting tube is not reflected back, and the infrared receiving tube does not receive the red line. Therefore, the infrared receiving tube outputs a high-level signal to the control module on the circuit board 3, enabling the circuit board 3 to control the instant heating element 2 to shut off, thus achieving the anti-dry-burning function.

[0041] Infrared detection component 4 is a photocurrent patch manufactured by Yonglin Electronics Co., Ltd., model: YL3528 / WT / P2 / 20-P940 / PT-JC.

[0042] The embodiments described above are merely examples for clearly illustrating this patent, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this patent, and these all fall within the scope of protection of this patent. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An instantaneous heater with a water inlet detection function, comprising a housing (1), an instantaneous heating tube (2), and a circuit board (3), wherein the instantaneous heating tube (2) is fixed inside the housing (1), the circuit board (3) is fixed on the outer periphery of the housing (1) and electrically connected to the instantaneous heating tube (2), one end of the instantaneous heating tube (2) is connected to a water inlet pipe, and the instantaneous heating tube (2) is also provided with a hot water outlet (21), characterized in that, It also includes an infrared detector (4), and the infrared detector (4) is electrically connected to the circuit board (3). The water inlet pipe includes at least one water inlet pipe (5), the water inlet pipe (5) includes an inlet (54) and an outlet (55), the inlet (54) is lower than the outlet (55), a movable sensing element (6) is provided inside the water inlet pipe (5), the infrared detector (4) is located on one side of the water inlet pipe (5), and at least one side of the water inlet pipe (5) corresponding to the position of the infrared detector (4) is made transparent.

2. The instantaneous heater with water inlet detection function according to claim 1, characterized in that, The water inlet pipe (5) is a vertical pipe, and the sensing element (6) is a floating element. The floating element includes a central support (61) and a spiral outer wall (62) wrapped around the outside of the central support (61). The inner diameter of the lower opening of the vertical pipe is smaller than the maximum outer diameter of the spiral outer wall (62).

3. The instantaneous heater with water inlet detection function according to claim 2, characterized in that, The lower opening of the vertical tube is fixed with a hollow tube cap (51), the inner diameter of which is smaller than the maximum outer diameter of the spiral outer wall (62).

4. The instantaneous heater with water inlet detection function according to claim 3, characterized in that, It also includes a heat sink (7), and a thyristor (31) is provided on the circuit board (3). One end of the heat sink (7) is fixed on the circuit board (3) and the heat sink (7) is attached to the thyristor (31). The other end of the heat sink (7) is sleeved on the outer periphery of the water inlet pipe (5).

5. The instantaneous heater with water inlet detection function according to claim 4, characterized in that, It also includes a water inlet tube (53), the upper end of which is inserted into the hollow tube cap (51), the lower end of which is connected to an external water source, and the other end of the heat sink (7) is fitted around the water inlet tube (53).

6. The instantaneous heater with water inlet detection function according to claim 1, characterized in that, A connecting post (11) extends outward from the outer side of the housing (1), and the circuit board (3) is fixed on the connecting post (11). A light-shielding enclosure (32) is fixed on the circuit board (3), and part of the water inlet pipe (5) and the infrared detector (4) are located inside the light-shielding enclosure (32).

7. The instantaneous heater with water inlet detection function according to claim 6, characterized in that, One side of the light-shielding wall (32) extends a connecting lug (321), one side of the circuit board (3) is attached to the connecting post (11), the light-shielding wall (32) and the connecting lug (321) are attached to the other side of the circuit board (3), and a connecting screw passes through the connecting lug (321) and the circuit board (3) in sequence and is fixedly connected to the connecting post (11).

8. The instantaneous heater with water inlet detection function according to any one of claims 1-7, characterized in that, It also includes a water pump (8), which is fixed on the outside of the housing (1). The inlet of the water pump (8) is connected to the other end of the water inlet pipe (5), and the outlet of the water pump (8) is connected to one end of the instant heating pipe (2).

9. The instantaneous heater with water inlet detection function according to claim 8, characterized in that, It also includes an intermediate box (9), which is placed on the housing (1) and the water pump (8). The intermediate box (9) is provided with a first connecting cavity (91) and a second connecting cavity (92). The two ends of the first connecting cavity (91) are respectively connected to the other end of the water inlet pipe (5) and the inlet of the water pump (8). The two ends of the second connecting cavity (92) are respectively connected to the outlet of the water pump (8) and one end of the instant heating pipe (2).

10. The instantaneous heater with water inlet detection function according to claim 1, characterized in that, It also includes a protective cover (10), with an elastic hook (101) extending from the side opening of the protective cover (10). The two sides of the housing (1) extend outward to form a snap-fit ​​part (12), and the elastic hook (101) is snapped onto the snap-fit ​​part (12). The instant heating tube (2) is provided with a water outlet pipe (22), and the water outlet pipe (22) has a hot water outlet (21). The housing (1), circuit board (3), instant heating tube (2) and water inlet pipe are all located inside the protective cover (10). The protective cover (10) has a clearance opening (102) corresponding to the water outlet pipe (22).

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