Waterproof structure PTC electric heater

Abstract

The utility model discloses a waterproof structure PTC (Positive Temperature Coefficient) electric heater, which relates to the field of electric heaters and comprises an aluminum tube, an insulating layer is arranged on the inner wall of the aluminum tube, a PTC heating element is arranged in an inner cavity of the aluminum tube, electrode plates are arranged on the upper side wall and the lower side wall of the PTC heating element, and electric leads are uniformly arranged on the right side wall of the aluminum tube. According to the scheme, the aluminum pipe, the insulating layer, the PTC heating element and other devices are arranged to be matched, so that the device can conveniently adjust the air pressure of the inner cavity of the aluminum pipe, the air pressure of the inner cavity of the aluminum pipe is kept consistent with the external water pressure, gaps at the sealing glue pouring position caused by the pressure difference are avoided, and the waterproof performance of the device is improved; through cooperation of the insulation support, the PTC heating element box aluminum pipe and the like, the PTC heating element can be conveniently supported and limited by the device, collision damage caused by deviation of the PTC heating element is avoided, protection of the PTC heating element is facilitated, and heating operation is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric heater technical field, concretely is a waterproof structure PTC electric heater. BACKGROUND

[0002] Using PTC element as heating source has become the trend of electric heating technology field, in prior art, it is usually with aluminum pipe containing PTC element, as a kind of safe and reliable heating mode, PTC electric heater has been widely applied in household appliances such as hair dryer, air conditioner, clothes dryer, the existing PTC electric heater is mostly sealed structure, due to the temperature change in aluminum pipe, the air pressure in its inner cavity changes, the alternative change of air pressure difference easily leads to the gap at sealed glue filling place, reduce the waterproof performance of device, for this purpose, a waterproof structure PTC electric heater is provided. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a waterproof structure PTC electric heater, effectively solve the problem that the existing PTC electric heater is mostly sealed structure, due to the temperature change in aluminum pipe, the air pressure in its inner cavity changes, the alternative change of air pressure difference easily leads to the gap at sealed glue filling place, reduce the waterproof performance of device.

[0004] In order to achieve the above object, the utility model provides the following technical scheme: a waterproof structure PTC electric heater, including aluminum pipe, the inner wall of aluminum pipe is provided with insulating layer, the inner chamber of aluminum pipe is provided with PTC heating element, the upper and lower side walls of PTC heating element are provided with electrode sheet, the right side wall of aluminum pipe is uniformly provided with conducting wire, the conducting wire is electrically connected with electrode sheet, the front and rear sides of aluminum pipe body are both provided with air pressure adjusting groove, the air pressure adjusting groove is connected with the inner chamber of aluminum pipe, the inner wall of air pressure adjusting groove is provided with air pressure adjusting plug.

[0005] Preferably, the inner wall of the aluminum pipe is uniformly provided with an insulating support, and the PTC heating element is arranged on the inner wall of the insulating support.

[0006] Preferably, the upper and lower tube walls of the aluminum pipe are flat, the front and rear ends of the aluminum pipe are provided with flanges extending outward, and the tube walls of the front and rear ends of the aluminum pipe are protruding triangular shapes.

[0007] Preferably, the bottom wall of the aluminum pipe is provided with a connecting groove, the connecting groove is in a trapezoidal shape, the inner wall of the connecting groove is provided with a connecting frame, and the bottom wall of the connecting frame is uniformly provided with suction cups.

[0008] Preferably, the outer wall of the air pressure adjusting plug is provided with a ring groove, the inner wall of the ring groove is provided with a sealing ring, and the cross section of the sealing ring is in a circular shape.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] 1、 this waterproof structure PTC electric heater, through setting up aluminium pipe, insulating layer and PTC heating element etc. device cooperation, can make the device convenient to the air pressure of aluminium pipe inner chamber adjustment, make the air pressure of aluminium pipe inner chamber and the water pressure of outside keep consistent, avoid the pressure difference and lead to the gap of sealed glue filling place, be favorable to improve the waterproofness of device;

[0011] 2、 this waterproof structure PTC electric heater, through setting up insulating support, PTC heating element box aluminium pipe etc. device cooperation, can make the device convenient to the PTC heating element support limit, avoid the PTC heating element and lead to the collision damage of deviation, be favorable to the protection of PTC heating element, convenient for heating operation;

[0012] 3、 this waterproof structure PTC electric heater, improve setting connection frame, sucking disc and aluminium pipe etc. device cooperation, can make the device convenient to the depth of aluminium pipe and place limit, avoid the pressure change of device in water and swing at will, be favorable to the stable pressure, avoid the pressure difference change and lead to the leakage. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the present application, and do not limit the present application.

[0014] In the drawings:

[0015] Figure 1 It is waterproof structure PTC electric heater structure schematic diagram of the utility model;

[0016] Figure 2 It is the sectional structure schematic diagram of aluminium pipe of the utility model;

[0017] Figure 3 It is the structure schematic diagram of sucking disc of the utility model;

[0018] Figure 4 It is the structure schematic diagram of sealing ring of the utility model;

[0019] In the drawing: 100, aluminium pipe;101, insulating layer;102, PTC heating element;103, electrode sheet;104, conducting wire;105, air pressure regulating plug;106, insulating support;107, connection frame;108, sucking disc;109, sealing ring. DETAILED DESCRIPTION

[0020] Clearly and completely describe the technical scheme in the embodiments of the utility model with the drawings in the embodiments of the utility model below, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0021] By Figures 1-4 The utility model discloses a waterproof structure PTC electric heater, the inner wall fixed connection of aluminium pipe 100 has insulating layer 101, insulating layer 101 adopts insulating material to make, avoids the electric leakage, the inner chamber of aluminium pipe 100 is installed with PTC heating element 102, heats through PTC heating element 102, the upper and lower side wall of PTC heating element 102 all are fixedly connected with electrode sheet 103, through electrode sheet 103, it is convenient to make power transmission to PTC heating element 102, the right side wall of aluminium pipe 100 is evenly fixedly connected with conducting wire 104, through conducting wire 104, it is convenient to deliver power to electrode sheet 103, conducting wire 104 and electrode sheet 103 electrically connected, the front and back sides of aluminium pipe 100 body all are set up with air pressure adjusting groove, and air pressure adjusting groove is linked with the inner chamber of aluminium pipe 100, and the inner wall of air pressure adjusting groove all are slidingly connected with air pressure adjusting plug 105.

[0022] In the embodiment: place the device into the water, make power transmission to electrode sheet 103 through conducting wire 104 electrification, through electrode sheet 103, the electric energy is introduced into PTC heating element 102, makes PTC heating element 102 heat and carries out heating operation, the heat of emitting heats aluminium pipe 100, then the heat is conducted to the water in aluminium pipe 100 through aluminium pipe 100 and heats, PTC heating element 102 heats and will back to the air in the inner chamber of aluminium pipe 100 and heats, makes the air pressure in aluminium pipe 100 increase, and high pressure gas enters the inner chamber of air pressure adjusting groove and pushes air pressure adjusting plug 105 to move, can make the device convenient to adjust the air pressure of the inner chamber of aluminium pipe 100, makes the air pressure of the inner chamber of aluminium pipe 100 and the water pressure of outside keep consistent, avoids the pressure difference and leads to the gap of sealed glue filling place, is favorable to improve the waterproofness of device.

[0023] Need to explain, the inner wall of its air pressure adjusting groove can install multiple air pressure adjusting plugs 105, can carry out multiple waterproof operation, and its air pressure adjusting plug 105 is centrally arranged, improves the waterproof performance of device, and its PTC heating element 102 is prior art, can carry out heating operation, which will not be described here.

[0024] The inner wall of the aluminum pipe 100 is uniformly fixedly connected with an insulating support 106, and the PTC heating element 102 is supported through the insulating support 106, and the insulating support 106 is uniformly provided with a through hole, so that the gas can flow, and the PTC heating element 102 is fixedly connected to the inner wall of the insulating support 106.

[0025] In the embodiment, the PTC heating element 102 is supported and limited through the insulating support 106, so that the PTC heating element 102 is prevented from being offset and colliding and being damaged, the PTC heating element 102 is protected, and heating operation is facilitated.

[0026] The upper and lower pipe walls of the aluminum pipe 100 are flat, the front and rear ends of the aluminum pipe 100 are provided with flanges extending outward, and the pipe walls of the front and rear ends of the aluminum pipe 100 are protruding triangular shapes.

[0027] In the embodiment, the flanges extending outward are arranged to increase the heat dissipation area of the aluminum pipe 100, and the heat dissipation effect of the device is further improved, so that the device can quickly heat the water body and the heating rate is improved.

[0028] The bottom wall of the aluminum pipe 100 is provided with a connecting groove in a trapezoidal shape, the inner wall of the connecting groove is slidably connected with a connecting frame 107, the connecting frame 107 is arranged to support and limit the aluminum pipe 100, the connecting frame 107 can be disassembled, the practicality of the device is improved, and the bottom wall of the connecting frame 107 is uniformly fixedly connected with a suction cup 108, which is arranged to be adsorbed and fixed.

[0029] In the embodiment, the suction cup 108 is arranged to be adsorbed to the inner wall of the container, the connecting frame 107 is fixed through the suction cup 108, the aluminum pipe 100 is limited through the connecting frame 107, the depth of the aluminum pipe 100 is limited, the device is prevented from swinging randomly in the water to change the pressure, the pressure is stabilized, and water leakage caused by pressure difference is avoided.

[0030] The outer wall of the air pressure adjusting plug 105 is provided with a ring groove, the inner wall of the ring groove is fixedly connected with a sealing ring 109 made of rubber, the sealing ring 109 is arranged to be deformed and fitted in the inner cavity of the air pressure adjusting groove, and the cross section of the sealing ring 109 is circular.

[0031] In the embodiment, the sealing ring 109 is arranged to seal the gap on the outer side of the air pressure adjusting plug 105, so that water is prevented from seeping from the gap, the cross section of the sealing ring 109 is circular, so that the sealing ring 109 is deformed and fitted on the inner wall of the air pressure adjusting groove, and the sealing property of the device is improved.

Claims

1. A waterproof structure PTC electric heater comprising an aluminum pipe (100), characterized in that: The inner wall of the aluminum pipe (100) is provided with an insulating layer (101), the inner cavity of the aluminum pipe (100) is provided with a PTC heating element (102), the upper and lower side walls of the PTC heating element (102) are each provided with an electrode sheet (103), the right side wall of the aluminum pipe (100) is uniformly provided with a conductive wire (104), the conductive wire (104) is electrically connected with the electrode sheet (103), the front and back sides of the aluminum pipe (100) body are each provided with an air pressure adjusting groove, the air pressure adjusting groove is communicated with the inner cavity of the aluminum pipe (100), and the inner wall of the air pressure adjusting groove is provided with an air pressure adjusting plug (105).

2. A waterproof construction PTC electric heater according to claim 1, characterized in that: The inner wall of the aluminum pipe (100) is uniformly provided with an insulating support (106), and the PTC heating element (102) is arranged on the inner wall of the insulating support (106).

3. The waterproof construction PTC electric heater according to claim 1, characterized in that: The upper and lower pipe walls of the aluminum pipe (100) are flat, the front and back ends of the aluminum pipe (100) are provided with outwardly protruding flanges, and the pipe walls of the front and back ends of the aluminum pipe (100) are protruding triangular shapes.

4. The waterproof construction PTC electric heater according to claim 1, characterized in that: The bottom wall of the aluminum pipe (100) is provided with a connecting groove, the connecting groove is arranged in a trapezoidal shape, the inner wall of the connecting groove is provided with a connecting frame (107), and the bottom wall of the connecting frame (107) is uniformly provided with a suction disc (108).

5. The waterproof construction PTC electric heater according to claim 1, characterized in that: The outer wall of the air pressure adjusting plug (105) is provided with a ring groove, the inner wall of the ring groove is provided with a sealing ring (109), and the cross section of the sealing ring (109) is circular.

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