Water-leaving power-off heating rod

Abstract

The utility model discloses a water leaving power-off heating rod, which comprises a heating rod main body and a fixing support, the heating rod main body comprises a shell, a PCB (printed circuit board), a heating element and a water leaving sensor are arranged in the shell, and a central control chip connected with the heating element and the water leaving sensor is arranged on the PCB. The fixing support comprises a base plate capable of being installed on the inner side wall of the fish tank and an elastic clamp arranged on the base plate, when the shell is clamped on the elastic clamp, the water leaving sensor is higher than the highest point of the heating piece, the water leaving sensor is provided with a sensing contact, and when the sensing contact is higher than the liquid level of the fish tank, the central control chip enables the heating piece to be powered off. The heating rod body is fixed in the fish tank for use through the fixing support, when the liquid level in the fish tank descends, it can be guaranteed that the water leaving sensor leaves the water surface earlier than the heating piece, the center control chip can cut off a power source before the heating piece leaves the water surface, dry burning of the heating piece is avoided, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a water-off-power-off heating rod. Background Art

[0002] As people's living standards improve, they place fish tanks or aquariums at home for breeding and ornamental creatures. In order to keep the water temperature in the aquarium constant at an appropriate temperature, a heater is installed in the aquarium to automatically adjust the water temperature. The existing heater is generally in the form of an electric heating rod, and its structure mainly consists of a shell, a heating wire and a thermostat. When in use, the heating rod is placed below the liquid surface of the aquarium. When the water temperature is lower than the set temperature of the heater, the heater heats up, and when the set temperature is reached, the heater stops heating. As long as the thermostat detects that the external temperature is lower than the set temperature, the heating body will continue to generate heat, which may cause the heater to burn dry in the absence of water or lack of water, causing safety accidents such as heating tube rupture or fire.

[0003] In order to solve the above problem, some heating rods have appeared on the market, which can automatically cut off the power when the heating rod is higher than the liquid level. However, these heating rods also have the following problems: these heating rods are placed directly in the aquarium without any fixing measures. Since the heating rod itself has a certain size, if the heating rod is in the aquarium with the water outlet power-off sensor device at the bottom and the heating tube at the top, the heating tube may dry burn while the water outlet power-off sensor device is still below the liquid level. In this case, the power will not be automatically cut off and the protection function cannot be achieved. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a water-out power-off heating rod which can be powered off in time when out of water and has good safety.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A water-out power-off heating rod comprises a heating rod body and a fixed bracket, wherein the heating rod body comprises a shell, wherein a PCB board, a heating element and a water-out sensor are arranged in the shell, wherein a central control chip connected to the heating element and the water-out sensor is arranged on the PCB board, wherein the fixed bracket comprises a base plate which can be mounted on the inner wall of a fish tank and an elastic clip arranged on the base plate, wherein when the shell is clamped on the elastic clip, the water-out sensor is higher than the highest point of the heating element, and the water-out sensor is provided with a sensing contact, and when the sensing contact is higher than the liquid level of the fish tank, the central control chip causes the heating element to be powered off.

[0007] In a preferred embodiment of the present invention, the heating element includes a plurality of heating tubes, and water holes are provided on the front side and the rear side of the shell.

[0008] In a preferred embodiment of the present invention, the elastic clip comprises an elastic left clamping plate and an elastic right clamping plate, the number of the elastic clips is two or more, all the left clamping plates are arranged in a row from bottom to top, and all the right clamping plates are arranged in a row from bottom to top.

[0009] In a preferred embodiment of the present invention, the left and right sides of the shell are both convex arc surfaces with a bulge in the middle and inward-retracted upper and lower sides, and the inner sides of the left and right clamps are both provided with concave arc surfaces matching the corresponding convex arc surfaces, so that the shell can move upward and detach from the elastic clamp when subjected to an upward pulling force.

[0010] In a preferred solution of the utility model, the base plate is provided with through holes capable of installing screws.

[0011] In a preferred embodiment of the present invention, the substrate is in the shape of an I.

[0012] In a preferred solution of the utility model, a power line electrically connected to the PCB board is provided at the upper end of the shell.

[0013] In a preferred solution of the utility model, a display module is arranged on the PCB board, a window corresponding to the display module is arranged on the front of the shell, and a transparent cover for shielding the window is detachably mounted on the shell.

[0014] In a preferred embodiment of the present invention, a face cover groove is provided on the front side surface of the shell, the transparent face cover is installed in the face cover groove, a plurality of snap through holes are provided on the bottom surface of the face cover groove, a plurality of elastic snaps corresponding to the snap through holes are provided on the transparent face cover, the elastic snaps pass through the corresponding snap through holes and are snapped onto the inner side surface of the shell.

[0015] The beneficial effect of the utility model is that the heating rod body is fixed in the fish tank by a fixed bracket. When the liquid level in the fish tank drops, it can be ensured that the water-leaving sensor will leave the water surface before the heating element leaves the water surface, so that the central control chip can cut off the power supply of the heating element before it leaves the water surface, avoiding dry burning, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 yes Figure 2 A magnified view of part A;

[0019] Figure 4 This is an exploded view with the fixing bracket and transparent cover removed;

[0020] Figure 5 It is an enlarged view of the utility model;

[0021] Figure 6 This is the circuit schematic of the water separation sensor. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0023] It should be noted that all directional indications in the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the descriptions of "preferred", "sub-preferred", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "preferred" or "sub-preferred" may explicitly or implicitly include at least one such feature.

[0024] Reference Figures 1 to 6 A water-out power-off heating rod comprises a heating rod body and a fixing bracket 2. The heating rod body comprises a shell 1. A PCB board 3, a heating element and a water-out sensor 4 are arranged in the shell 1. A central control chip connected to the heating element and the water-out sensor 4 is arranged on the PCB board 3. The fixing bracket 2 comprises a base plate 21 that can be installed on the inner wall of the fish tank and an elastic clip 22 arranged on the base plate 21. When the shell 1 is clamped on the elastic clip 22, the water-out sensor 4 is higher than the highest point of the heating element.

[0025] Preferably, water holes 501 are provided on the front side and the rear side of the housing 1. The housing 1 generally adopts a structure formed by splicing the front and rear parts, and the two parts are connected by screw connection or welding. The heating element includes a plurality of heating tubes 5, and the heating tubes 5 can be far-infrared heating tubes 5, Teflon heating tubes 5, etc.

[0026] When the heating rod is used in an aquarium or fish tank, the base plate 21 of the fixing bracket 2 can be installed on the inner wall of the fish tank, and then the main body of the heating rod can be installed on the elastic clip 22 of the fixing bracket 2, and the shell 1 can be clamped by the elastic clip 22.

[0027] Preferably, the elastic clip 22 includes an elastic left clamp 221 and an elastic right clamp 222, the number of the elastic clips 22 is two or more, all the left clamps 221 are arranged in a row from bottom to top, and all the right clamps 222 are arranged in a row from bottom to top. The left side and right side of the shell 1 are both convex arc surfaces 101 with a convex middle and inwardly contracted upper and lower sides, and the inner side of the left clamp 221 and the inner side of the right clamp 222 are both provided with concave arc surfaces 201 that match the corresponding convex arc surfaces 101. With such a design, when the shell 1 of the heating rod body is subjected to an upward pulling force, it can move upward and detach from the elastic clip 22, and when the heating rod body is subjected to pulling forces in other directions, it is not easy to be removed from the fixed bracket 2.

[0028] Figure 6 It is a circuit schematic diagram of a water separation sensor 4, which includes a signal emitting element 41 and two wires for supplying power to the signal emitting element 41. One of the wires is a neutral wire 43, and the other wire is a live wire 42, and the live wire 42 is divided into a disconnected first section 421 and a second section 422. The head end of the first section 421 is connected to the power supply, and the end of the second section 422 is connected to the signal emitting element 41. The two sensing contacts 401 of the water separation sensor 4 are respectively located at the end of the first section 421 and the head end of the second section 422. Preferably, the signal emitting element 41, the live wire 42, the neutral wire 43, and the two sensing contacts 401 are integrated on the same circuit board. When the two sensing contacts 401 are both located in the water in the fish tank, the first section 421 and the second section 422 of the live wire 42 are turned on, and the signal emitting element 41 can be powered. At this time, the signal emitting element 41 can continuously send a signal to the central control chip, and the central control chip will send an execution command to keep the heating element powered on. When the heating rod body is pulled out of the fish tank, or the liquid level in the fish tank drops, the water-leaving sensor 4 will leave the water surface before the heating element. When the two sensing contacts 401 of the water-leaving sensor 4 leave the water surface, the signal transmitting element 41 will be powered off. After receiving this signal, the central control chip will immediately cut off the power supply of the heating tube 5 to prevent it from drying out. With such a design, whether the liquid level in the fish tank drops or the heating rod body is pulled upward, it can be ensured that the water-leaving sensor 4 will leave the water surface before the heating element, so that the central control chip can cut off the power supply of the heating element before it leaves the water surface, which is safe and reliable.

[0029] The method of installing the fixing bracket 2 on the inner wall of the fish tank can be: 1. Apply glass glue on the rear surface of the base plate 21 and then adhere it to the fish tank. 2. Provide a through hole 211 on the base plate 21 for installing screws and fix it to the inner wall of the fish tank by screws.

[0030] Preferably, the base plate 21 is in the shape of an I. With such a structure, the material consumption can be reduced and the weight of the fixing bracket 2 can be controlled within a reasonable range while ensuring that the strength of the base plate 21 meets the requirements.

[0031] In the present utility model, the following power supply methods can be adopted: First, Figure 1 , a power cord 6 electrically connected to the PCB board 3 is provided at the upper end of the shell 1, and a plug is provided at one end of the power cord 6; secondly, a battery can be provided in the shell 1 to supply power through the battery.

[0032] Reference Figure 3 , a display module 31 is arranged on the PCB board 3, a window 102 corresponding to the display module 31 is arranged on the front of the housing 1, and a transparent cover 7 for shielding the window 102 is also detachably mounted on the housing 1. Specifically, a cover groove 103 is arranged on the front side of the housing 1, and the transparent cover 7 is mounted in the cover groove 103. A plurality of buckle through holes 104 are arranged on the bottom surface of the cover groove 103, and a plurality of elastic buckles 71 corresponding to the buckle through holes 104 are arranged on the transparent cover 7. The elastic buckles 71 pass through the corresponding buckle through holes 104 and are buckled on the inner side surface of the housing 1. With such a design, it is convenient to mount the transparent cover 7 on the housing 1, and after the installation, the transparent cover 7 is stored in the cover groove 103 without being obtrusive.

[0033] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A water-off power-off heating rod, characterized in that: The invention comprises a shell (1) and a fixed bracket (2), wherein a PCB board (3), a heating element and a water separation sensor (4) are arranged in the shell (1), a central control chip connected to the heating element and the water separation sensor (4) is arranged on the PCB board (3), the fixed bracket (2) comprises a base plate (21) which can be mounted on the inner wall of a fish tank, and an elastic clip (22) arranged on the base plate (21), when the shell (1) is clamped on the elastic clip (22), the water separation sensor (4) is higher than the highest point of the heating element, and the water separation sensor (4) has a sensing contact (401), and when the sensing contact (401) is higher than the liquid level of the fish tank, the central control chip causes the heating element to be powered off.

2. The water-off power-off heating rod according to claim 1, characterized in that: The heating element comprises a plurality of heating tubes (5), and water holes (501) are provided on the front side and the rear side of the shell (1).

3. The water-off power-off heating rod according to claim 1, characterized in that: The elastic clamp (22) comprises an elastic left clamp plate (221) and an elastic right clamp plate (222). The number of the elastic clamps (22) is two or more, all the left clamp plates (221) are arranged in a row from bottom to top, and all the right clamp plates (222) are arranged in a row from bottom to top.

4. The water-off power-off heating rod according to claim 3, characterized in that: The left and right sides of the shell (1) are both convex arc surfaces (101) with a raised middle and inwardly contracted upper and lower sides, and the inner sides of the left clamp (221) and the right clamp (222) are both provided with concave arc surfaces (201) that match the corresponding convex arc surfaces (101), so that the shell (1) can move upward and detach from the elastic clamp (22) when subjected to an upward pulling force.

5. The water-off power-off heating rod according to claim 1, characterized in that: The base plate (21) is provided with through holes (211) capable of installing screws.

6. The water-off power-off heating rod according to claim 1, characterized in that: The base plate (21) is in the shape of an I.

7. The water-off power-off heating rod according to claim 1, characterized in that: The upper end of the housing (1) is provided with a power line (6) electrically connected to the PCB board (3).

8. The water-off power-off heating rod according to claim 1, characterized in that: A display module (31) is arranged on the PCB board (3), a window (102) corresponding to the display module (31) is arranged on the front of the housing (1), and a transparent cover (7) for covering the window (102) is also detachably mounted on the housing (1).

9. The water-off power-off heating rod according to claim 8, characterized in that: A cover groove (103) is provided on the front side surface of the shell (1), the transparent cover (7) is installed in the cover groove (103), a plurality of snap-on through holes (104) are provided on the bottom surface of the cover groove (103), a plurality of elastic snaps (71) corresponding to the snap-on through holes (104) are provided on the transparent cover (7), and the elastic snaps (71) pass through the corresponding snap-on through holes (104) and are snapped onto the inner side surface of the shell (1).

Images