A convection electric heater with waste heat recovery structure

Abstract

This utility model discloses a convection electric heater with a waste heat recovery structure, relating to the technical field of convection electric heaters. It includes a heater housing, a heat dissipation mesh frame on the front of the housing, several heat dissipation vents evenly spaced on the top of the housing, several air inlets on the bottom of the housing, an electric heating unit inside the housing, and heat dissipation mechanisms inside two fixed housings. A heat recovery component is located on the lower side of the two fixed housings facing each other, near the heater housing. A waste heat recovery structure is located on the top of the two uprights. This utility model operates by manipulating the heat dissipation mechanism to agitate the heat from the heating element inside the heater housing, rapidly dispersing hot air into the room and accelerating the heating process. Simultaneously, waste heat flows into the heat recovery component, improving combustion efficiency and reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of convection electric heater technology, specifically to a convection electric heater with a waste heat recovery structure. Background Technology

[0002] A convection heater is a heating device that uses electric heating elements to heat air and create a circulating convection current. It utilizes the principle of natural airflow; cold air enters from the bottom, is heated, rises, and continuously circulates to raise the room temperature. However, existing technologies have the following problems:

[0003] Existing convection heaters heat up slowly during use, and the hot air output to the room is uneven. Furthermore, they cannot recover and reuse waste heat, resulting in low utilization of the heaters and waste of energy. Summary of the Invention

[0004] This invention provides a convection electric heater with a waste heat recovery structure to solve the problems existing in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A convection electric heater with a waste heat recovery structure includes a heater housing, a heat dissipation mesh frame on the front of the heater housing, a plurality of heat dissipation vents evenly spaced on the top of the heater housing, a plurality of air inlets on the bottom of the heater housing, an electric heating unit inside the heater housing, fixed housings fixedly connected to the left and right ends of the heater housing, support feet fixedly connected to the bottom of each of the two fixed housings, a heat dissipation mechanism inside each of the two fixed housings, a heat recovery component on the opposite side of the two fixed housings near the lower side of the heater housing, a stand fixedly connected to the top of each of the two fixed housings, a waste heat recovery structure on the top of the two stand, and a switch on the front end of the left fixed housing.

[0007] A further improvement of this utility model is that: a heat exhaust port with internal and external penetration is provided at the bottom of one end of the fixed housing; a number of communication ports with the inside of the electric heater housing are provided at equal intervals on the upper side of one end of the fixed housing near the communication port; and a connecting groove with internal and external penetration is provided at the other end of the fixed housing, with a filter screen fixedly connected to the inner wall of the connecting groove.

[0008] A further improvement of this utility model's technical solution is that: the heat dissipation mechanism includes a rotary motor, a rotating rod, two positioning sleeves, and several fan blades. The output shaft of the rotary motor is fixedly connected to the upper end of the rotating rod. The inner walls of the two positioning sleeves are respectively fixedly connected to the upper and lower sides of the outer wall of the rotating rod. One end of each of the several fan blades is fixedly connected to the outer wall of the two positioning sleeves in a circular array. The top of the rotary motor is fixedly connected to the top of the inner wall of the fixed housing. The bottom of the outer wall of the rotating rod is rotatably connected to the bottom of the inner wall of the fixed housing.

[0009] A further improvement of the present invention is that the recycling component includes a hollow square tube and a perforated plate. The top of the hollow square tube has an internally and externally penetrating installation port, and the outer wall of the perforated plate is fixedly connected to the inner wall of the installation port.

[0010] A further improvement of this utility model is that the port of the hollow square tube is fixedly connected to the outside of one end of the fixed housing near the heat dissipation port.

[0011] A further improvement of this utility model's technical solution is that the waste heat recovery structure includes a water tank, a water injection pipe, a sealing plug, a drain pipe, a drain valve, several heat-conducting plates, and two hanging brackets. The bottom of the water injection pipe is fixedly connected to the left side of the top of the water tank. The bottom of the outer wall of the sealing plug is threadedly connected to the inner wall of the water injection pipe. One end of the drain pipe is fixedly connected to the bottom of the left end of the water tank. The drain valve is externally located outside the drain pipe. The upper ends of several heat-conducting plates are equidistantly arrayed and fixedly connected to the lower end of the water tank. One end of each of the two hanging brackets is fixedly connected to the front and rear ends of the water tank, respectively.

[0012] A further improvement of this utility model is that the tops of the two uprights are respectively fixedly connected to the outside of the bottom of the water tank near several heat-conducting plates.

[0013] A further improvement of the present invention is that: a fixed plate is fixedly connected to the top of the water tank, and a number of vertically penetrating vent holes are equidistantly arranged inside the fixed plate, and a vent is provided on the top of the water tank that communicates with the number of vent holes.

[0014] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0015] 1. This utility model provides a convection electric heater with a waste heat recovery structure. It utilizes the cooperation between a fixed shell, a heat dissipation mechanism, and a recovery component. By controlling the heat dissipation mechanism, the heat from the heating element inside the heater shell is agitated, allowing hot air to quickly diffuse into the room and accelerate the heating process. Simultaneously, waste heat flows into the recovery component and then back into the heater shell through an air inlet at the bottom, further improving combustion efficiency and reducing energy consumption. This solves the problems of slow heating and uneven hot air distribution in existing convection electric heaters, achieving the beneficial effects of accelerating heating and evenly dispersing hot air into the room.

[0016] This utility model provides a convection electric heater with a waste heat recovery structure. Through the cooperation of the stand and the waste heat recovery structure, heat is transferred to the water tank via heat-conducting fins when the heater casing is in operation, heating the water in the tank. The steam generated by the heated water diffuses into the room through vents, further humidifying the air and preventing excessive dryness. Wet clothes can also be hung on the drying rack to dry. This solves the problem of low utilization rate of electric heaters due to the inability to recover and reuse waste heat, achieving the beneficial effect of waste heat recovery and reuse, and improving the utilization rate of electric heaters. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the convection electric heater with waste heat recovery structure according to this utility model.

[0018] Figure 2 This is a three-dimensional structural diagram of the heat dissipation mechanism of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the recycling component of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the waste heat recovery structure of this utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the three-dimensional structure of the water tank of this utility model.

[0022] In the diagram: 1. Electric heater housing; 2. Heat dissipation mesh frame; 3. Heat dissipation vent; 4. Fixed housing; 401. Heat exhaust port; 402. Connecting port; 403. Connecting groove; 41. Filter screen; 5. Support foot plate; 6. Heat dissipation mechanism; 61. Rotary motor; 62. Rotating rod; 63. Positioning sleeve; 64. Fan blade; 7. Heat recovery component; 71. Hollow square tube; 710. Mounting port; 72. Perforated plate; 8. Stand; 9. Waste heat recovery structure; 91. Water tank; 910. Vent; 92. Water injection pipe; 93. Sealing plug; 94. Drain pipe; 95. Drain valve; 96. Heat conduction plate; 97. Hanging bracket; 98. Fixing plate; 980. Vent hole; 10. Switch. Detailed Implementation

[0023] To make the technical means, creative features, objectives, and effects of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments:

[0024] like Figure 1 As shown, this utility model provides a convection electric heater with a waste heat recovery structure, including an electric heater shell 1, a heat dissipation mesh frame 2 on the front of the electric heater shell 1, a plurality of heat dissipation vents 3 evenly arranged on the top of the electric heater shell 1, a plurality of air inlets on the bottom of the electric heater shell 1, an electric heating unit inside the electric heater shell 1, fixed shells 4 fixedly connected to the left and right ends of the electric heater shell 1 respectively, support feet 5 fixedly connected to the bottom of each of the two fixed shells 4, heat dissipation mechanism 6 inside each of the two fixed shells 4, a heat recovery component 7 on the opposite side of the two fixed shells 4 near the lower side of the electric heater shell 1, a stand 8 fixedly connected to the top of each of the two fixed shells 4, a waste heat recovery structure 9 on the top of the two stand 8, and a switch 10 at the front end of the left fixed shell 4.

[0025] The heater is configured with a housing 1, a heat dissipation mesh frame 2, a heat dissipation vent 3, a fixed housing 4, supporting feet 5, a heat dissipation mechanism 6, a heat recovery component 7, a stand 8, and a waste heat recovery structure 9. Through the coordinated operation of the heat dissipation mechanism 6 and the heat recovery component 7, the heat dissipation mechanism 6 can agitate the heat from the heating element inside the heater housing 1, allowing the hot air to spread rapidly throughout the room, accelerating the heating process. The waste heat is then returned to the heater housing 1 through the heat recovery component 7, improving combustion efficiency and reducing energy consumption. Through the coordinated operation of the stand 8 and the waste heat recovery structure 9, the waste heat in the air heats the water in the waste heat recovery structure 9. The water vapor generated by the heating is discharged and diffused, humidifying the air and preventing it from becoming too dry.

[0026] like Figure 2As shown, this utility model provides a convection electric heater with a waste heat recovery structure: A heat exhaust port 401 with internal and external penetration is provided at the bottom of one end of the fixed housing 4; several connecting ports 402 with internal penetrations are equidistantly arranged on the upper side of one end of the fixed housing 4 near the connecting port 402; a connecting groove 403 with internal and external penetration is provided at the other end of the fixed housing 4; a filter screen 41 is fixedly connected to the inner wall of the connecting groove 403; the heat dissipation mechanism 6 includes a rotary motor 61, a rotating rod 62, two positioning sleeves 63, and several fan blades 64; the output shaft of the rotary motor 61 is connected to... The upper end of the rotating rod 62 is fixedly connected, and the inner walls of the two positioning sleeves 63 are respectively fixedly connected to the upper and lower sides of the outer wall of the rotating rod 62. One end of several fan blades 64 is fixedly connected to the outer wall of the two positioning sleeves 63 in a circular array. The top of the rotary motor 61 is fixedly connected to the top of the inner wall of the fixed housing 4. The bottom of the outer wall of the rotating rod 62 is rotatably connected to the bottom of the inner wall of the fixed housing 4. The output shaft of the rotary motor 61 drives the multiple fan blades 64 to rotate through the rotating rod 62, so that the heat generated inside the electric heater housing 1 is blown outward, so that the hot air is quickly diffused in the room and the heating speed is accelerated.

[0027] like Figure 3 As shown, this utility model provides a convection electric heater technical solution with a waste heat recovery structure: the recovery component 7 includes a hollow square tube 71 and a perforated plate 72. The top of the hollow square tube 71 has an internally and externally penetrating installation port 710. The outer wall of the perforated plate 72 is fixedly connected to the inner wall of the installation port 710. The port of the hollow square tube 71 is fixedly connected to the outer side of one end of the fixed housing 4 near the heat exhaust port 401. Waste heat flows into the hollow square tube 71 through the heat exhaust port 401 and flows back into the electric heater housing 1 through the perforated plate 72, thereby improving combustion efficiency and reducing energy consumption.

[0028] like Figure 4 As shown, this utility model provides a convection electric heater with a waste heat recovery structure: the waste heat recovery structure 9 includes a water tank 91, a water inlet pipe 92, a sealing plug 93, a drain pipe 94, a drain valve 95, several heat-conducting plates 96, and two hanging brackets 97. The bottom of the water inlet pipe 92 is fixedly connected to the bottom of the outer wall of the sealing plug 93 on the left side of the top of the water tank 91 and is threadedly connected to the inner wall of the water inlet pipe 92. One end of the drain pipe 94 is fixedly connected to the bottom of the left end of the water tank 91. The drain valve 95 is located outside the drain pipe 94. The upper ends of several heat-conducting plates 96 are equidistantly arrayed and fixedly connected to the lower end of the water tank 91. The multiple heat-conducting plates 96 transfer the waste heat in the air to the water tank 91 to heat the water in the water tank 91. One end of the two hanging brackets 97 is fixedly connected to the front and rear ends of the water tank 91, respectively. The tops of the two brackets 8 are fixedly connected to the bottom of the water tank 91 near the outer side of several heat-conducting plates 96.

[0029] like Figure 5 As shown, this utility model provides a convection electric heater with a waste heat recovery structure: a fixed plate 98 is fixedly connected to the top of the water tank 91, and several vertically penetrating vent holes 980 are equidistantly arrayed inside the fixed plate 98. A vent 910 is opened on the top of the water tank 91, which is connected to the several vent holes 980. By opening multiple vent holes 980, water vapor is discharged through the vent holes 980 during the heating process, thereby humidifying the indoor air.

[0030] The working principle of this convection electric heater with waste heat recovery structure will be explained in detail below.

[0031] like Figure 1-5 As shown, water is injected into the water tank 91 through the water injection pipe 92, and then the sealing plug 93 is screwed into the water injection pipe 92. The electric heater is connected to an external power source through a wire, and the control switch 10 is used to turn on the heating element inside the heater housing 1 to start operation. Then, the rotary motor 61 is started, and the output shaft of the rotary motor 61 drives the rotating rod 62 to rotate, which in turn drives the fan blades 64 to rotate, fanning the heat from the heating element inside the heater housing 1, so that the hot air is quickly diffused into the room, accelerating the heating speed. The residual heat inside the fixed housing 4 flows into the hollow square tube 71 through the heat outlet 401, and is discharged from the electric heater through the perforated plate 72. The air inlet at the bottom of the heater housing 1 flows back into the heater housing 1, further improving combustion efficiency and reducing energy consumption. The heat from the heating element inside the heater housing 1 is discharged upwards along the heat dissipation vent 3. Multiple heat-conducting fins 96 transfer the residual heat in the air to the water tank 91 to heat the water in the water tank 91. The water vapor generated during the heating process is discharged upwards through the vent 980 and diffused into the room, further humidifying the air and preventing the room from becoming too dry. Wet clothes can also be hung on the hanging rack 97 to dry. By opening the drain valve 95, the hot water in the water tank 91 can be discharged from the drain pipe 94 for use.

[0032] The electric heating unit, heating element, and rotating motor used above are all existing products, and the specific circuit connection structure and control relationship of the electric heating unit are also existing technologies, which will not be elaborated on here.

[0033] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A convection type electric heater having a waste heat recovery structure, comprising an electric heater housing (1), characterized in that: The electric heater housing (1) has a heat dissipation mesh frame (2) on the front side, and several heat dissipation vents (3) are equidistantly arranged on the top of the electric heater housing (1). Several air inlets are opened on the bottom of the electric heater housing (1). An electric heating unit is installed inside the electric heater housing (1). Fixed housings (4) are fixedly connected to the left and right ends of the electric heater housing (1). Support plates (5) are fixedly connected to the bottom of the two fixed housings (4). Heat dissipation mechanisms (6) are installed inside the two fixed housings (4). A heat recovery component (7) is installed on the lower side of the opposite side of the two fixed housings (4) near the electric heater housing (1). A stand (8) is fixedly connected to the top of the two fixed housings (4). A waste heat recovery structure (9) is installed on the top of the two stand (8). A switch (10) is installed at the front end of the left fixed housing (4).

2. A convection electric heater with a waste heat recovery structure according to claim 1, characterized in that: The bottom of one end of the fixed housing (4) is provided with a heat exhaust port (401) that runs through the inside and outside. On the upper side of one end of the fixed housing (4) near the connecting port (402), there are several connecting ports (402) that run through the inside of the electric heater housing (1) at equal intervals. The other end of the fixed housing (4) is provided with a connecting groove (403) that runs through the inside and outside. A filter screen (41) is fixedly connected to the inner wall of the connecting groove (403).

3. The convection electric heater with waste heat recovery structure according to claim 1, characterized in that: The heat dissipation mechanism (6) includes a rotary motor (61), a rotating rod (62), two positioning sleeves (63) and several fan blades (64). The output shaft of the rotary motor (61) is fixedly connected to the upper end of the rotating rod (62). The inner walls of the two positioning sleeves (63) are respectively fixedly connected to the upper and lower sides of the outer wall of the rotating rod (62). One end of the several fan blades (64) is respectively fixedly connected to the outer wall of the two positioning sleeves (63) in a circular array. The top of the rotary motor (61) is fixedly connected to the top of the inner wall of the fixed housing (4). The bottom of the outer wall of the rotating rod (62) is rotatably connected to the bottom of the inner wall of the fixed housing (4).

4. The convection electric heater with waste heat recovery structure according to claim 1, characterized in that: The recycling component (7) includes a hollow square tube (71) and a perforated plate (72). The top of the hollow square tube (71) is provided with an internal and external through mounting port (710), and the outer wall of the perforated plate (72) is fixedly connected to the inner wall of the mounting port (710).

5. The convection electric heater with waste heat recovery structure according to claim 4, characterized in that: The port of the hollow square tube (71) is fixedly connected to the outside of one end of the fixed housing (4) near the heat dissipation port (401).

6. A convection electric heater with a waste heat recovery structure according to claim 1, characterized in that: The waste heat recovery structure (9) includes a water tank (91), a water injection pipe (92), a sealing plug (93), a drain pipe (94), a drain valve (95), several heat-conducting plates (96), and two hanging brackets (97). The bottom of the water injection pipe (92) is fixedly connected to the left side of the top of the water tank (91). The bottom of the outer wall of the sealing plug (93) is threadedly connected to the inner wall of the water injection pipe (92). One end of the drain pipe (94) is fixedly connected to the bottom of the left end of the water tank (91). The outside of the drain valve (95) is set outside the drain pipe (94). The upper ends of several heat-conducting plates (96) are equidistantly arrayed and fixedly connected to the lower end of the water tank (91). One end of the two hanging brackets (97) is fixedly connected to the front and rear ends of the water tank (91), respectively.

7. The convection electric heater with waste heat recovery structure according to claim 6, characterized in that: The tops of the two uprights (8) are respectively fixedly connected to the bottom of the water tank (91) near the outside of several heat-conducting plates (96).

8. The convection electric heater with waste heat recovery structure according to claim 6, characterized in that: The top of the water tank (91) is fixedly connected to a fixing plate (98), and the fixing plate (98) has several vertically penetrating vent holes (980) arranged in an equidistant array inside. The top of the water tank (91) has a vent (910) that is connected to the several vent holes (980).

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