Air duct type electric heater

Abstract

The utility model discloses an air duct type electric heater, which relates to the technical field of electric heaters and comprises a bottom shell, an arc-shaped cover covers the top end of the bottom shell, a first air outlet pipe and a second air outlet pipe respectively penetrate through two side walls of the arc-shaped cover, and an air inlet pipe penetrates through the front surface of the bottom shell. A first electromagnetic valve is fixedly installed in the middle of the air inlet pipe, a branch pipe is arranged at the top of the air inlet pipe, a second electromagnetic valve is installed at the top end of the branch pipe, a filter screen is clamped to the inner wall of the air inlet pipe, an impurity discharging pipe is arranged at the bottom of the filter screen, and a butt joint pipe is fixedly connected to the tail end of the air inlet pipe. The tail end of the butt joint pipe is fixedly connected with an aeration plate. By arranging a series of structures, heat generated by the electric heater can be fully utilized, accumulation and waste of the heat in the electric heater are reduced, the electric heater is more energy-saving and environment-friendly, and the steps of cleaning the filter screen are simplified, so that the time for cleaning the filter screen is saved, and the electric heater is more convenient for a user to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heaters, in particular to an air duct type electric heater. Background Art

[0002] Duct-type electric heating is a type of electric heater, which is mainly used to heat the air in the air duct. It is divided into three types: high, medium and low. There is an over-temperature control device at the junction box. At the same time, the fan and the electric heating tube have a linkage operation device, which can effectively avoid the dry burning of the electric heating tube.

[0003] However, when the existing duct-type electric heater is in use, after the electric heating tube heats the air in the heater, the heated air tends to accumulate in the upper part of the heater, and the air inlet pipe is usually located sideways to intake air, which makes it difficult to take away the heat from the top of the heater. As a result, the heat generated by the electric heater cannot be fully utilized, resulting in heat accumulation and waste, which is not energy-saving and environmentally friendly. In addition, the filter at the air inlet pipe of the electric heater needs to be removed before cleaning, and in order to maintain the filtering effect of the filter, the filter needs to be cleaned frequently, which makes the filter cleaning process more troublesome and time-consuming, and inconvenient for users to operate. Utility Model Content

[0004] The purpose of the present invention is to provide a duct type electric heater to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a duct-type electric heater, comprising a bottom shell, the top cover of the bottom shell is provided with an arc-shaped cover, the two side walls of the arc-shaped cover are respectively penetrated by a first air outlet pipe and a second air outlet pipe, the front of the bottom shell is penetrated by an air inlet pipe, a first solenoid valve is fixedly installed in the middle of the air inlet pipe, a branch pipe is provided on the top of the air inlet pipe, a second solenoid valve is installed on the top of the branch pipe, a filter is clamped on the inner wall of the air inlet pipe, a debris discharge pipe is provided at the bottom of the filter, the end of the air inlet pipe is fixedly connected to a docking pipe, the end of the docking pipe is fixedly connected to an aeration plate, and an electric heating pipe is provided above the aeration plate.

[0006] Preferably, the bottom end of the branch pipe is connected to the air inlet pipe, and the branch pipe is communicated with the interior of the air inlet pipe.

[0007] Preferably, a nozzle is fixedly installed at the junction of the bottom end of the branch pipe and the air inlet pipe, and the nozzle is located on the top of the filter.

[0008] Preferably, the exhaust pipe is connected to the bottom end of the air inlet pipe, the exhaust pipe is communicated with the interior of the air inlet pipe, and a movable threaded sleeve at the bottom end of the exhaust pipe is provided with a card cover.

[0009] Preferably, an energy-gathering plate is fixedly mounted on one side of the inner wall of the bottom shell, the end of the electric heating tube is snap-connected to the energy-gathering plate, and the electric heating tube is snap-connected to the bottom shell.

[0010] Preferably, a plurality of channels are provided inside the aeration plate, and a plurality of air outlet holes are provided at the intersection of the channels and the top of the aeration plate.

[0011] Preferably, the butt joint is communicated with a channel inside the aeration plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. This duct-type electric heater changes the air intake mode of the electric heater from side intake to bottom intake through the arc cover, butt-jointed tube, aeration plate and the air outlet pipe at the top, so that the low-temperature air rises at the same time as the heat, and can promptly bring out the heat generated by the electric heating tube and the heat accumulated in the arc cover from the air outlet pipe, so that the heat generated by the electric heater can be fully utilized, reducing the accumulation and waste of heat in the electric heater, and being more energy-saving and environmentally friendly.

[0014] 2. This duct-type electric heater uses a branch pipe, a first solenoid valve, a second solenoid valve, a nozzle and an exhaust pipe, so that the filter at the air inlet pipe of the electric heater can be blown out from the exhaust pipe by vertical airflow, so that the filter does not need to be removed from the pipe when cleaning, which simplifies the steps of cleaning the filter, thereby saving time for cleaning the filter and making it more convenient for users to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the arc cover and energy-gathering plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the connecting pipe and the impurity discharge pipe of the utility model;

[0018] Figure 4 This is a schematic diagram of the aeration plate and air outlet structure of the utility model.

[0019] In the figure: 1. Arc cover; 2. First air outlet pipe; 3. Second air outlet pipe; 4. Air inlet pipe; 5. First solenoid valve; 6. Second solenoid valve; 7. Branch pipe; 8. Exhaust pipe; 9. Card cover; 10. Electric heating pipe; 11. Bottom shell; 12. Energy gathering plate; 13. Aeration plate; 14. Air outlet; 15. Nozzle; 16. Filter; 17. Butt joint pipe. DETAILED DESCRIPTION

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

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1 to 4 As shown, the duct type electric heater of this embodiment includes a bottom shell 11, and the top cover of the bottom shell 11 is provided with an arc-shaped cover 1, and the two side walls of the arc-shaped cover 1 are respectively penetrated by a first air outlet pipe 2 and a second air outlet pipe 3, and the front of the bottom shell 11 is penetrated by an air inlet pipe 4, and the middle part of the air inlet pipe 4 is fixedly installed with a first solenoid valve 5, and the top of the air inlet pipe 4 is provided with a branch pipe 7, and the top of the branch pipe 7 is installed with a second solenoid valve 6, and the inner wall of the air inlet pipe 4 is engaged with a filter screen 16, and the bottom of the filter screen 16 is provided with an exhaust pipe 8, and the end of the air inlet pipe 4 is fixedly connected to a docking pipe 17, and the end of the docking pipe 17 is fixedly connected to an aeration plate 13, and an electric heating pipe 10 is provided above the aeration plate 13.

[0024] Specifically, the interior of the bottom shell 11 is hollowed out, so that the electric heating tube 10 has enough space to heat the incoming air. The inner wall of the arc cover 1 is coated with a heat-insulating material, so that when the heat is concentrated on the inner side of the arc cover 1, it is not easy to exchange heat with the outside world, thereby reducing heat loss. The first air outlet pipe 2 and the second air outlet pipe 3 enable the heater to provide high-temperature air to two heating devices at the same time, so that the heat source generated by the electric heater can be fully utilized, reducing unnecessary waste of heat source, and being more energy-saving and environmentally friendly. The function of the first solenoid valve 5 is to control the closure of the air inlet pipe 4, so that the air inlet pipe 4 can be in a closed state when not in use, reducing the entry of external debris, and the top of the branch pipe 7 is connected to the output of the high-pressure air pump. The end is connected, and its function is to allow the compressed air flow to enter the nozzle 15. The function of the second solenoid valve 6 is to control the opening and closing of the branch pipe 7, so that the branch pipe 7 is opened only when it is needed. The top and bottom of the exhaust pipe 8 are connected, so that the nozzle 15 can blow the impurities intercepted on the filter 16 out of the air inlet pipe 4 through the exhaust pipe 8, thereby realizing easy cleaning of the filter 16 and eliminating the disassembly step before cleaning the filter 16. The function of the aeration plate 13 is to allow the air entering the electric heater to be blown from bottom to top, driving the heat generated by the electric heating tube 10 to move upward and be discharged from the top air outlet pipe, thereby making full use of the heat, reducing the accumulation of heat in the electric heater, and being more energy-saving and environmentally friendly.

[0025] Furthermore, the bottom end of the branch pipe 7 is connected to the air inlet pipe 4, and the branch pipe 7 is communicated with the interior of the air inlet pipe 4. The end of the branch pipe 7 away from the nozzle 15 is connected to the output end of the high-pressure air pump, so that a high-speed airflow can be blown into the branch pipe 7, so that the airflow ejected from the nozzle 15 can blow the debris on the filter 16 to the exhaust pipe 8.

[0026] Furthermore, a nozzle 15 is fixedly installed at the intersection of the bottom end of the branch pipe 7 and the air inlet pipe 4. The nozzle 15 is located at the top of the filter 16. The function of the nozzle 15 is to refine the airflow and blow it from top to bottom toward the filter 16, so that the impurities on the filter 16 can be blown into the exhaust pipe 8, thereby cleaning the filter 16.

[0027] Furthermore, the exhaust pipe 8 is connected to the bottom end of the air inlet pipe 4, and the exhaust pipe 8 is communicated with the interior of the air inlet pipe 4. The bottom end of the exhaust pipe 8 is provided with a movable threaded sleeve with a card cover 9. When the exhaust pipe 8 is not in use, the card cover 9 can close the bottom end of the exhaust pipe 8, so that the airflow blown in by the air inlet pipe 4 can smoothly enter the connecting pipe.

[0028] Furthermore, an energy-gathering plate 12 is fixedly installed on one side of the inner wall of the bottom shell 11, and the end of the electric heating tube 10 is snap-connected with the energy-gathering plate 12, and the electric heating tube 10 is snap-connected with the bottom shell 11. The function of the energy-gathering plate 12 is to collect the heat generated by the end of the electric heating tube 10, so that the heat can float along the inner wall of the bottom shell 11 to the arc cover 1, thereby reducing unnecessary waste of heat.

[0029] Furthermore, a plurality of channels are provided inside the aeration plate 13, and a plurality of air outlet holes 14 are provided at the intersection of the channels and the top of the aeration plate 13. The air outlet holes 14 are directed vertically upward, so that the air flow blown into the bottom shell 11 can be blown upward and bring the heat generated by the electric heating tube 10 to the arc cover 1, thereby facilitating the contact between the heat and the blown air, which is more energy-saving and environmentally friendly.

[0030] Furthermore, the docking pipe 17 is connected to the channel inside the aeration plate 13. The docking pipe 17 can pass the air blown into the air inlet pipe 4 into the channel of the aeration plate 13, so that the low-temperature air can be dispersed and evenly blown out in the heater, which is conducive to the airflow blowing to every corner of the bottom shell 11.

[0031] The method of using this embodiment is as follows: before using the duct type electric heater, it is necessary to first connect the electric heater to an external power supply, then connect the air inlet pipe 4 to the output end of the blower, and then connect the branch pipe 7 to the output end of the high-pressure air pump. After the blower is started, the first solenoid valve 5 will be opened. At this time, low-temperature air will enter from the air inlet pipe 4, then pass through the filter 16 into the docking pipe 17, and then enter the aeration plate 13 from the docking pipe 17, and then blow upward from the air outlet 14 along the channel inside the aeration plate 13, so that the air flow blows from bottom to top to the electric heating pipe 10. At this time, the electric heating pipe 10 is turned on, so that the electric heating pipe 10 heats the blown air, and the generated heat will flow upward with the blown air, so that the heating The heated air enters the arc cover 1, and then, driven by the subsequent airflow, the heated air will be blown out from the first air outlet pipe 2 and the second air outlet pipe 3 respectively, so that the heat accumulated in the arc cover 1 is taken out together. When the filter 16 needs to be cleaned, it is necessary to first unscrew the card cover 9 from the bottom end of the exhaust pipe 8 to open the pipe mouth at the bottom end of the exhaust pipe 8, and then open the second solenoid valve 6 and close the first solenoid valve 5 and the electric heating pipe 10. At this time, the high-speed airflow will be blown out from the nozzle 15 through the branch pipe 7, so that the high-speed airflow is blown from the top to the bottom of the filter 16, so that the impurities adsorbed on the filter 16 are separated from the filter 16, and then enter the exhaust pipe 8 with the airflow, and finally discharged from the exhaust pipe 8, thus completing the cleaning of the filter 16.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A duct type electric heater, comprising a bottom shell (11), characterized in that: The top cover of the bottom shell (11) is provided with an arc cover (1), and the two side walls of the arc cover (1) are respectively penetrated by a first air outlet pipe (2) and a second air outlet pipe (3), the front of the bottom shell (11) is penetrated by an air inlet pipe (4), the middle part of the air inlet pipe (4) is fixedly installed with a first solenoid valve (5), the top of the air inlet pipe (4) is provided with a branch pipe (7), the top of the branch pipe (7) is installed with a second solenoid valve (6), the inner wall of the air inlet pipe (4) is engaged with a filter (16), the bottom of the filter (16) is provided with a waste pipe (8), the end of the air inlet pipe (4) is fixedly connected with a butt joint pipe (17), the end of the butt joint pipe (17) is fixedly connected with an aeration plate (13), and an electric heating pipe (10) is provided above the aeration plate (13).

2. The duct type electric heater according to claim 1, characterized in that: The bottom end of the branch pipe (7) is connected to the air inlet pipe (4) through-hole, and the branch pipe (7) is in communication with the interior of the air inlet pipe (4).

3. The duct type electric heater according to claim 1, characterized in that: A nozzle (15) is fixedly installed at the junction of the bottom end of the branch pipe (7) and the air inlet pipe (4), and the nozzle (15) is located on the top of the filter screen (16).

4. The duct type electric heater according to claim 1, characterized in that: The impurity discharge pipe (8) is connected to the bottom end of the air inlet pipe (4) through the impurity discharge pipe (8), and the interior of the air inlet pipe (4) is communicated with the impurity discharge pipe (8). The bottom end of the impurity discharge pipe (8) is provided with a movable threaded sleeve with a card cover (9).

5. The duct type electric heater according to claim 1, characterized in that: An energy-gathering plate (12) is fixedly mounted on one side of the inner wall of the bottom shell (11), the end of the electric heating tube (10) is snap-connected to the energy-gathering plate (12), and the electric heating tube (10) is snap-connected to the bottom shell (11).

6. The duct type electric heater according to claim 1, characterized in that: A plurality of channels are provided inside the aeration plate (13), and a plurality of air outlet holes (14) are provided at the intersection of the channels and the top end of the aeration plate (13).

7. The duct type electric heater according to claim 6, characterized in that: The butt joint (17) is communicated with the channel inside the aeration plate (13).

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