Protective electric heater

Abstract

The utility model belongs to the technical field of heating equipment, and particularly relates to a protective electric heater which comprises a shell and a first air inlet formed in the shell. The electric heating unit comprises a heat insulation seat fixedly connected to the inner wall of the shell, a heating element fixedly connected to the upper end of the heat insulation seat, a radiator fixedly connected to a heating source of the heating element, a fan fixedly connected to the inner wall of the shell and a waterproof plate, a second air inlet is formed in the lower end of the waterproof plate, and a second air outlet is formed in the upper end of the waterproof plate. An inclined groove for communicating the second air inlet with the second air outlet is formed in the waterproof plate; and hot air exhausted from the guide plate enters the chute from the air inlet II and then is exhausted from the air outlet II, so that even if the electric heater is used in a bathroom and splashed water drops generated during showering fall into the air outlet II, the water drops cannot enter the chute from the air outlet II, the waterproof effect is achieved while air is exhausted, and the service life of the electric heater is prolonged. And the protection performance of the electric heater is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heating equipment, and specifically to a protective electric heater. Background Art

[0002] Electric heaters use electricity as their main energy source and use resistance heating, arc heating, electron beam heating, infrared heating and dielectric heating to heat the human body and the environment through warm air convection, direct contact, and far-infrared radiation.

[0003] The infrared heaters currently on the market have a small heating range and are easy to dry out. Although electric oil heaters are suitable for whole-house heating, they are not waterproof. Therefore, baseboard heaters are the most commonly used. They have extra-long air outlets that can form a thermal curtain and are suitable for multiple scenarios. However, when the baseboard heater is used in the bathroom, water droplets splashed by the shower may enter the inside of the heater through the air outlet of the baseboard heater. Water droplets contacting the heating element may cause metal corrosion or oxidation, which may affect the heating efficiency and shorten the life of the equipment in the long run. At the same time, water droplets may cause internal circuit short circuits or leakage, thereby causing electrical failures. Utility Model Content

[0004] The purpose of this application is to provide a protective electric heater to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a protective electric heater, comprising a shell and an air inlet one opened inside the shell, an electric heating unit is fixedly connected inside the shell, and the electric heating unit comprises a heat insulation seat fixedly connected to the inner wall of the shell, a heating element fixedly connected to the upper end of the heat insulation seat, a radiator fixedly connected to the heat source of the heating element, a fan and a waterproof plate fixedly connected to the inner wall of the shell, an air inlet two is opened at the lower end of the waterproof plate, and an air outlet two is opened at the upper end of the waterproof plate, and an inclined groove connecting the air inlet two with the air outlet two is opened inside the waterproof plate.

[0006] In one embodiment, a guide plate is fixedly connected to the inner wall of the shell, and an air outlet 1 is opened inside the guide plate. The cross-section of the air outlet 1 is trapezoidal, and the guide plate is located between the waterproof plate and the fan.

[0007] In one embodiment, a drainage hole connected to the second air outlet is provided inside the waterproof board, and a flow channel connected to the drainage hole is provided inside the waterproof board, and a drainage port connected to the flow channel is fixedly connected to the lower end of the waterproof board.

[0008] In one embodiment, an atomization unit is further provided inside the shell, and the atomization unit includes a water tank fixedly connected to the inner wall of the shell, a purifier whose input end is connected to the output end of the water tank, a pipe connected to the output end of the purifier, a pump body connected to the other end of the pipe and fixedly connected to the inner wall of the shell, and an atomizer connected to the output end of the pump body and fixedly connected to the inner wall of the shell. The drain port is connected to an input end of the water tank through a drain pipe, and the other input end of the water tank passes through the shell and is connected to a water inlet opened on the outer surface of one side of the shell, and the output end of the atomizer passes through the shell and extends outward.

[0009] In one embodiment, a bracket is fixedly connected to the inner wall of the shell, and the lower end of the radiator is fixedly connected to the upper end of the bracket, and the bracket is a heat-insulating bracket.

[0010] In one embodiment, two legs are symmetrically fixed to the lower end of the shell, and the cross-section of the legs is trapezoidal, and the air inlet is obliquely opened inside the shell.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] The present application is provided with a waterproof board, and an air inlet 2, an air outlet 2 and an inclined groove are opened inside the waterproof board. The hot air discharged from the guide plate enters the inclined groove from the air inlet 2, and then is discharged from the air outlet 2. The advantage of this design is that even when the electric heater is used in the bathroom, the splashing water droplets generated during the shower fall into the air outlet 2, and cannot enter the inclined groove from the air outlet 2. It has a waterproof effect while exhausting air, thereby improving the protection performance of the electric heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the air inlet 1 and the support structure of this application;

[0014] Figure 2 This is a schematic diagram of the atomization unit structure of this application;

[0015] Figure 3 This is a schematic diagram of the electric heating unit structure of this application;

[0016] Figure 4 This is a structural diagram of the drain outlet and air outlet of this application;

[0017] Figure 5 This is a schematic diagram of the structure of the second air outlet and the drainage hole of this application;

[0018] Figure 6 This is a cross-sectional view of the waterproofing board for this application.

[0019] In the figure: 1. shell; 11. air inlet 1; 12. bracket; 2. support foot; 3. electric heating unit; 31. insulation seat; 32. heating element; 33. radiator; 34. fan; 35. guide plate; 36. air outlet 1; 37. waterproof plate; 371. inclined groove; 38. air outlet 2; 39. air inlet 2; 4. atomization unit; 41. water tank; 42. purifier; 43. pipeline; 44. atomizer; 45. water inlet; 46. drain outlet; 47. drain hole; 48. flow channel; 49. pump body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Example:

[0023] See also Figure 1-6 The present application provides a technical solution: a protective electric heater, comprising a shell 1 and an air inlet 11 opened inside the shell 1, wherein two legs 2 are symmetrically fixed to the lower end of the shell 1, and the cross-section of the legs 2 is trapezoidal, and the air inlet 11 is obliquely opened inside the shell 1. An electric heating unit 3 is fixedly connected to the inside of the shell 1, and the electric heating unit 3 includes a heat insulation seat 31 fixedly connected to the inner wall of the shell 1, a heating element 32 fixedly connected to the upper end of the heat insulation seat 31 (usually a resistance heating element, such as a PTC ceramic heating element, a heating wire or a quartz tube), a radiator 33 fixedly connected to the heat source of the heating element 32 (made of metal, used to absorb and dissipate the heat generated by the heating element 32), a fan 34 fixedly connected to the inner wall of the shell 1 (used to blow the heat on the radiator 33 out of the shell 1) and a waterproof plate 37, the lower end of the waterproof plate 37 is provided with a second air inlet 39, the upper end of the waterproof plate 37 is provided with a second air outlet 38, and the inside of the waterproof plate 37 is provided with an inclined groove 371 connecting the second air inlet 39 with the second air outlet 38.

[0024] By setting the above scheme, the heating element 32 is controlled to work, and the heat generated by the heating element 32 is transferred to the radiator 33. The fan 34 blows the heat on the radiator 33 out of the shell 1. The hot air blown by the fan 34 blows toward the waterproof plate 37, enters the inclined groove 371 from the second air inlet 39, and then enters the second air outlet 38 from the inclined groove 371, and then the hot air is discharged into the room. It should be noted here that the number of inclined grooves 371 must be multiple, and the inclined grooves 371 are evenly arranged in the waterproof plate 37. Due to the design of the inclined grooves 371, even if the water droplets splashed during showering fall into the second air outlet 38, they cannot enter the inclined groove 371, and cannot enter the shell 1 through the inclined groove 371, which effectively protects the water droplets splashed during showering.

[0025] See also Figure 4 In this embodiment, a guide plate 35 is fixedly connected to the inner wall of the shell 1, and an air outlet 36 is opened inside the guide plate 35. The cross-section of the air outlet 36 is trapezoidal. The guide plate 35 is located between the waterproof plate 37 and the fan 34. The trapezoidal air outlet 36 can increase the air outlet speed of the guide plate 35, so that the hot air passing through the air outlet 36 can be blown out quickly.

[0026] See also Figure 4 and Figure 6 In the present embodiment, a drainage hole 47 connected to the second air outlet 38 is further provided inside the waterproof plate 37, and a flow channel 48 connected to the drainage hole 47 is further provided inside the waterproof plate 37. A drainage port 46 connected to the flow channel 48 is fixedly connected to the lower end of the waterproof plate 37. Water droplets splashing into the second air outlet 38 can flow into the drainage hole 47, and flow into the flow channel 48 from the drainage hole 47, and finally be discharged from the drainage port 46, thereby preventing excessive water stored in the second air outlet 38 from entering the chute 371.

[0027] See also Figure 2 In this embodiment, an atomizing unit 4 is further provided inside the housing 1, and the atomizing unit 4 includes a water tank 41 fixedly connected to the inner wall of the housing 1, a purifier 42 whose input end is connected to the output end of the water tank 41, a pipe 43 connected to the output end of the purifier 42, a pump body 49 connected to the other end of the pipe 43 and fixedly connected to the inner wall of the housing 1, and an atomizer 44 connected to the output end of the pump body 49 and fixedly connected to the inner wall of the housing 1. The drain port 46 is connected to an input end of the water tank 41 through a drain pipe, and the other input end of the water tank 41 passes through the housing 1 and is connected to a water inlet 45 opened on the outer surface of one side of the housing 1. The output end of the atomizer 44 passes through the housing 1 and extends outward ( Figure 2 The output end is not shown in the figure, which is actually a pipe with one end connected to the output end of the atomizer 44, and the other end of the pipe extends outward through the housing 1).

[0028] By setting up the above scheme, the water flow discharged from the drain port 46 can flow into the water tank 41, and the water tank 41 collects and utilizes the water flow. At the same time, water can also be added to the water tank 41 through the water inlet 45. The water in the water tank 41 enters the pump body 49 after being purified by the purifier 42. The purifier 42 can remove particulate matter, suspended matter and some minerals in the water. The purifier 42 includes primary filtration: using a coarse filter to remove large particle impurities; activated carbon filtration: removing organic matter and some chemical pollutants; microfiltration membrane: further removing fine particles and microorganisms. The purifier 42 has the same principle as the existing water purifier and will not be repeated here. It is then pumped into the atomizer 44 through the pump body 49. The atomizer 44 can use a thermal evaporation humidifier. By heating water and releasing water vapor, it can kill bacteria and microorganisms. The water vapor generated by the heating of the atomizer 44 can enter the room to increase the indoor humidity, which is particularly suitable for the dry environment in winter.

[0029] A bracket 12 is also fixedly connected to the inner wall of the shell 1 , and the lower end of the radiator 33 is fixedly connected to the upper end of the bracket 12 . The bracket 12 is a heat-insulating bracket 12 .

[0030] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0031] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A protective electric heater, comprising a housing (1) and an air inlet (11) provided inside the housing (1), characterized in that: An electric heating unit (3) is fixedly connected inside the shell (1), and the electric heating unit (3) comprises a heat insulation seat (31) fixedly connected to the inner wall of the shell (1), a heating element (32) fixedly connected to the upper end of the heat insulation seat (31), a radiator (33) fixedly connected to the heat source of the heating element (32), a fan (34) and a waterproof plate (37) fixedly connected to the inner wall of the shell (1), the lower end of the waterproof plate (37) is provided with a second air inlet (39), and the upper end of the waterproof plate (37) is provided with a second air outlet (38), and the interior of the waterproof plate (37) is provided with an inclined groove (371) that connects the second air inlet (39) with the second air outlet (38).

2. A protective electric heater according to claim 1, characterized in that: A guide plate (35) is also fixedly connected to the inner wall of the shell (1), and an air outlet (36) is provided inside the guide plate (35). The cross section of the air outlet (36) is trapezoidal. The guide plate (35) is located between the waterproof plate (37) and the fan (34).

3. A protective electric heater according to claim 2, characterized in that: The waterproof plate (37) is also provided with a drainage hole (47) in communication with the second air outlet (38), and the waterproof plate (37) is also provided with a flow channel (48) in communication with the drainage hole (47). The lower end of the waterproof plate (37) is fixedly connected with a drainage port (46) in communication with the flow channel (48).

4. A protective electric heater according to claim 3, characterized in that: The shell (1) is also provided with an atomizing unit (4), and the atomizing unit (4) comprises a water tank (41) fixedly connected to the inner wall of the shell (1), a purifier (42) whose input end is connected to the output end of the water tank (41), a pipe (43) connected to the output end of the purifier (42), a pump body (49) connected to the other end of the pipe (43) and fixedly connected to the inner wall of the shell (1), and an atomizer (44) connected to the output end of the pump body (49) and fixedly connected to the inner wall of the shell (1). The drain port (46) is connected to an input end of the water tank (41) through a drain pipe, and the other input end of the water tank (41) passes through the shell (1) and is connected to a water inlet (45) provided on the outer surface of one side of the shell (1). The output end of the atomizer (44) passes through the shell (1) and extends outward.

5. A protective electric heater according to any one of claims 1 or 4, characterized in that: A bracket (12) is also fixedly connected to the inner wall of the shell (1), and the lower end of the radiator (33) is fixedly connected to the upper end of the bracket (12), and the bracket (12) is a heat-insulating bracket (12).

6. A protective electric heater according to claim 1, characterized in that: The lower end of the shell (1) is symmetrically fixed with two supporting legs (2), and the cross-section of the supporting legs (2) is trapezoidal. The air inlet 1 (11) is obliquely opened inside the shell (1).

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