CN202501556U - U-shaped duct heater - Google Patents

Abstract

The utility model discloses a U-shaped air duct type electric heater, which comprises a shell, a heating element and a fan, wherein a baffle plate is arranged in the shell to form a first air chamber and a second air chamber; the heating element is arranged in the U-shaped air channel; therefore, the air duct and the heating element are reasonable in layout, the phenomenon of overhigh temperature of the shell is effectively avoided, the air inlet of the U-shaped air duct is upwards utilized in a matched mode, the ventilation opening is formed in the lower portion of the U-shaped air duct, the path of air flow is prolonged, the heating time is longer, after the air flow enters the first air chamber from the second air chamber, the air flow is fully preheated by the outer wall surface of the U-shaped air duct and then fully heated in the U-shaped air duct, a heat source is fully utilized, the air outlet temperature is kept high and uniform, the heating effect is better, and the use requirements of users are fully met.

Description

U-shaped duct heater

technical field

The utility model relates to the technology in the field of heating equipment, in particular to a U-shaped air duct electric heater with good heating effect.

Background technique

As we all know, the electric heater is a kind of household electrical appliance that people use for heating in winter. At present, the electric heater has entered thousands of households and has become one of the necessary electrical products for people to pursue a comfortable life in winter. With the rapid development of science and technology, electric heaters have evolved from various forms of ordinary electric heaters to convection electric heaters. The working principle of convection electric heaters is to use fans to draw cold air from the outside into the box. Then use the heating elements in the box to heat the air, and finally send the heated hot air out to achieve heating.

However, although the above-mentioned existing electric heater products can realize the basic function of convection heating and heating, in actual use, it is found that there are still many deficiencies in its own structure and performance, and the best use effect and work performance cannot be achieved. efficacy. Its shortcomings are especially reflected in:

In the electric heaters in the prior art, the layout of the air ducts, heating elements and fans in the casing is unreasonable, and the heat source cannot be fully utilized to heat the airflow, resulting in an excessively high temperature of the casing, and the short airflow path causes uneven heating of the airflow. As a result, the temperature of the air outlet is high and sometimes low or the temperature of the air outlet at the hot air outlet is high on one side and low on the other, and the heating effect is poor, which cannot meet the user's requirements.

Utility model content

In view of this, the utility model aims at the deficiencies in the prior art, and its main purpose is to provide a U-shaped air duct electric heater, which can effectively solve the problem of air ducts and heating elements in the shell of the existing electric heaters. And the unreasonable layout of the fan leads to poor heating effect.

In order to achieve the above object, the utility model adopts the following technical solutions:

A U-shaped air duct electric heater, including a casing, heating elements and fans arranged in the casing, a partition plate is vertically arranged in the casing to form a first air chamber and a second air chamber, the casing is before The upper end of the side is provided with a hot air outlet, and the upper end of the rear side of the shell is provided with a cold air inlet connected between the outside world and the second air chamber. A U-shaped air duct is suspended in the first air chamber. The U-shaped air duct There is a gap between the outer wall surface and the inner wall surface of the first air chamber to form a preheating air duct. The air inlet of the U-shaped air duct faces upward and communicates with the preheating air duct, and the air outlet of the U-shaped air duct communicates with the aforementioned As for the hot air outlet, an air vent connecting the first air chamber and the second air chamber is arranged on the partition, and the air vent is located below the U-shaped air duct; the heating element is arranged in the U-shaped air duct.

As a preferred solution, the air outlet of the U-shaped air duct faces upwards and communicates with the aforementioned hot air outlet through a transverse air duct.

As a preferred solution, the fan is fixed at the aforementioned air vent, and the air outlet and air inlet of the fan correspond to the first air chamber and the second air chamber respectively.

As a preferred solution, the fan is located in the second air chamber, the air outlet of the fan communicates with the first air chamber through the aforementioned air vent, and the air inlet of the fan directly communicates with the second air chamber.

As a preferred solution, the heating elements are evenly distributed along the trajectory of the U-shaped air duct.

As a preferred solution, the heating element is a heating tube made of heating wire or a quartz tube that can generate far infrared rays.

As a preferred solution, an activated carbon filter is arranged at the inlet of the cold air.

As a preferred solution, it further includes a control panel arranged on the front side of the casing, and a heat insulating space is formed between the front side of the casing and the outer wall of the U-shaped air duct.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be known from the above technical solutions:

A U-shaped air duct is suspended from the first air chamber of the housing, and the heating element is arranged in the U-shaped air duct. The air inlet of the air duct faces upward, and the vent is set under the U-shaped air duct, so that the path of the airflow is extended and the heating time is longer. After the airflow enters the first air chamber from the second air chamber, it passes through the U-shaped air chamber. The outer wall surface of the duct is fully preheated and then fully heated in the U-shaped air duct, making full use of the heat source, so that the temperature of the outlet air remains high and uniform, and the outlet air temperature is high and sometimes low, or the outlet air temperature at the hot air outlet is high on one side With the appearance of one side low phenomenon, the heating effect is better, which fully meets the user's requirements.

In order to illustrate the structural features and functions of the utility model more clearly, the utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a sectional view of a preferred embodiment of the utility model;

Fig. 2 is the back view of the preferred embodiment of the utility model;

Fig. 3 is a partially exploded side view of a preferred embodiment of the present invention.

Explanation of the accompanying drawings:

10. Shell 11. Partition

12. U-shaped air duct 121. Air inlet

122. Air outlet 13. Horizontal air duct

101. The first air chamber 102. The second air chamber

103. Hot air outlet 104. Cold air outlet

105. Preheating air duct 106. Air vent

107. Heat insulation space 20. Heating element

30. Fan 31. Air outlet

32. Air inlet 40. Control panel

50. Activated carbon filter screen.

Detailed ways

Please refer to FIG. 1 to FIG. 3 , which show the specific structure of a preferred embodiment of the present invention, including a housing 10 and a heating element 20 and a fan 30 disposed in the housing 10 .

Wherein, the housing 10 is square, and a partition 11 is vertically arranged in the housing 10 to form a first air chamber 101 and a second air chamber 102. The upper end of the side is provided with a cold air inlet 104 that communicates with the outside world and the second air chamber 102; a U-shaped air duct 12 is suspended in the first air chamber 101, and the outer wall surface of the U-shaped air duct 12 is in contact with the first wind chamber. There is a gap between the inner walls of the chamber 101 to form a preheating air passage 105. The U-shaped air passage 12 has an air inlet 121 and an air outlet 122. The air inlet 121 faces upward and communicates with the aforementioned preheating air passage 105. The air outlet 122 of the U-shaped air duct 12 communicates with the aforementioned hot air outlet 103. In this embodiment, the air outlet 122 also faces upwards and communicates with the aforementioned hot air outlet 103 through a horizontal air channel 13. The direction of the air outlet 122 is not limited to upward, and the air outlet 122 is not limited to communicate with the hot air outlet 103 through the transverse air channel 13; the partition 11 is provided with a vent 106 that communicates the first air chamber 101 and the second air chamber 102 with each other, and the vent 106 Located below the U-shaped air duct 12.

The heating element 20 is arranged in the U-shaped air duct 12, and it is used to directly heat the airflow passing through the U-shaped air duct 12 to form hot air. In this embodiment, there are multiple heating elements 20, and the plurality of heating elements Elements 20 are evenly distributed along the trajectory of U-shaped air duct 12, and the quantity and distribution form of heating elements 20 are not limited; When the tube is used as a heating element, the quartz tube has the characteristics of fast heating speed and long service life, and the far infrared rays generated by it can also be emitted through the air outlet 122 of the U-shaped air duct 12 to provide remote heating.

The fan 30 is fixed at the aforementioned ventilation opening 106, and the air outlet 31 and the air inlet 32 of the fan 30 are connected to the aforementioned first air chamber 101 and the second air chamber 102 respectively, and the operation of the fan 30 is used to form a continuous air flow. In this embodiment, the fan 30 is located in the second air chamber 102, the air outlet 31 of the fan 30 communicates with the first air chamber 101 through the aforementioned vent 103, and the air inlet 32 of the fan 30 directly communicates with the second air chamber 102 .

And, it further includes a control panel 40 arranged on the front side of the casing 10, a heat insulating space 107 is formed between the front side of the casing 10 and the outer wall of the U-shaped air duct 12, so that the heat on the U-shaped air duct 12 can be avoided. It is directly transmitted to the control panel 40, effectively protecting the normal operation of the control panel 40.

In addition, it is preferable to set an activated carbon filter 50 at the aforementioned cold air inlet 104. The activated carbon filter 50 is used to filter and purify the air entering the second air chamber 102, so as to effectively prevent dust and moisture from entering the electric heater. In the device, it is beneficial to prolong the service life of the electric heater.

The working principle of this embodiment is described in detail as follows:

As shown in Figure 1, at first start heating element 20 and fan 30 by control panel 40, at this moment, air enters in the second air chamber 102 from cold air inlet 104, then, utilize the fan 30 that is arranged at vent 106 places to make the air A continuous air flow is formed and enters the first air chamber 101. The air flow flows upward through the preheating air duct 105 and flows into the U-shaped air duct 12 from the air inlet 121. When the air flow flows through the preheating air duct 105, the U-shaped air flow The heat on the outer wall of the channel 12 can fully preheat the air flow; then, after the air flow enters the U-shaped air channel 12, the air flow flows along the track of the U-shaped air channel 12, and after being fully heated by the heating element 20, a The hot air finally flows out from the air outlet 122 and is output through the transverse air duct 13 and the hot air outlet 103 in sequence. In this way, the cycle continues, and finally the air in the room or around the electric heater is heated to achieve the purpose of heating.

The key point of the design of the utility model is: through the first air chamber of the shell, a U-shaped air duct is suspended, and the heating element is arranged in the U-shaped air duct. The layout of the air duct and the heating element is reasonable, and the phenomenon of excessive temperature of the shell is effectively avoided. The appearance of the U-shaped air duct, and the use of the U-shaped air duct with the air inlet facing upward, and the vent is set below the U-shaped air duct, so that the path of the airflow is extended, the heating time is longer, and the airflow enters the first air chamber from the second air chamber. After the air chamber, the outer wall surface of the U-shaped air duct is fully preheated before entering the U-shaped air duct for full heating, making full use of the heat source, so that the outlet air temperature remains high and uniform, and the outlet air temperature is high and sometimes low or the hot air outlet is prevented. The phenomenon that the outlet air temperature at one side is higher than the other side is lower, the heating effect is better, and the use requirements of users are fully met.

The above are only preferred embodiments of the present utility model, and do not limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (8)

1. U type air duct type electric heater; Include a shell and be arranged at heater element and the fan in the shell; It is characterized in that: vertically be provided with dividing plate in this shell and be formed with first air compartment and second air compartment, the upper end of side is provided with hot-blast outlet before this shell, and the upper end of side is provided with the cold wind import that is communicated with between extraneous and second air compartment after the shell; Be hung with U type air channel in this first air compartment; Maintain the gap between the outside wall surface in this U type air channel and the internal face of first air compartment and be formed with the preheating air channel, the air inlet in this U type air channel up and be communicated with the preheating air channel, the air outlet in this U type air channel is communicated with aforementioned hot-blast outlet; This dividing plate is provided with the ventilating opening that first air compartment and second air compartment are communicated with each other, and this ventilating opening is positioned at the below in U type air channel; This heater element is arranged in the U type air channel.

2. U type air duct type electric heater according to claim 1 is characterized in that: the air outlet in said U type air channel is communicated with aforementioned hot-blast outlet up and through a horizontal air channel.

3. U type air duct type electric heater according to claim 1, it is characterized in that: said fan is fixedly arranged on aforementioned ventilating opening place, corresponding respectively aforementioned first air compartment and second air compartment of being communicated with of the air outlet of this fan and air inlet.

4. U type air duct type electric heater according to claim 1, it is characterized in that: said fan is arranged in second air compartment, and the air outlet of this fan is communicated with first air compartment through aforementioned ventilating opening, and the air inlet of this fan directly is communicated with second air compartment.

5. U type air duct type electric heater according to claim 1, it is characterized in that: said heater element evenly distributes along the track in U type air channel.

6. according to claim 1 or 5 described U type air duct type electric heaters, it is characterized in that: said heater element is the quartz ampoule that heating tube that heater strip is processed maybe can produce far infrared.

7. U type air duct type electric heater according to claim 1 is characterized in that: said cold wind import department is provided with active carbon filter net.

8. U type air duct type electric heater according to claim 1 is characterized in that: further include the control panel that is arranged at the shell front side face, be formed with insulated space between the leading flank of this shell and the U type air channel outside wall surface.

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