Purification electric film heater

Abstract

The present invention relates to a purification electric heating film heater, comprising a shell, a partition is provided in the shell, and the space enclosed by the shell is divided into a heating chamber and an air outlet chamber, the air outlet chamber is located at the bottom of the shell, the part of the shell forming the heating chamber is provided with an air inlet, the part of the shell forming the air outlet chamber is provided with an air outlet, an electric heating film is provided in the heating chamber, a ventilation hole is provided on the partition, an air purification device is provided at the ventilation hole, and an air extraction member is provided in the shell, which is used to guide the hot air in the heating chamber from the ventilation hole into the air outlet chamber. The hot air heated by the electric heating film in the heating chamber is filtered and purified by the air purification device when entering the air outlet chamber from the ventilation hole, so as to improve the indoor air quality during heating.

Description

Technical Field

[0001] The invention relates to the field of household electrical appliances, and in particular to a purification electric heating film heater. Background Art

[0002] As an important heating equipment, heaters have improved people's quality of life. Heaters mainly heat indoor air to increase indoor temperature and provide heating. Electric film heaters mainly transfer heat to the room through natural convection heat transfer and radiation heat transfer. Since hot air floats under natural convection heat transfer, there is a problem of "hot head and cold feet". For this reason, the heated air is introduced into the room from the lower part of the heater so that the heat can be as close to the human body activity area as possible. Generally, the room is in a relatively closed state during heating, and the electric heating film will produce a small amount of harmful odor gas under high temperature conditions, resulting in poor indoor air quality. Summary of the invention

[0003] Based on this, it is necessary to provide a purification electric heating film heater to improve the indoor air quality during heating.

[0004] A purification electric heating film heater comprises a shell, wherein a partition is provided in the shell, and the space enclosed by the shell is divided into a heating chamber and an air outlet chamber, wherein the air outlet chamber is located at the bottom of the shell, and the portion of the shell forming the heating chamber is provided with an air inlet, and the portion of the shell forming the air outlet chamber is provided with an air outlet, an electric heating film is provided in the heating chamber, a ventilation hole is provided on the partition, an air purification device is provided at the ventilation hole, and an exhaust member is provided in the shell for introducing the hot air in the heating chamber from the ventilation hole into the air outlet chamber.

[0005] The purification electric heating film heater provided by the above scheme mainly includes a shell, a partition, an electric heating film, an air purification device and an exhaust member. The space enclosed by the shell is divided into a heating chamber and an air outlet chamber by the partition. Under the action of the exhaust member, the indoor air enters the heating chamber from the air inlet, and is heated under the action of the electric heating film. The heated air passes through the ventilation hole and enters the air outlet chamber, and is filtered and purified by the air purification device. Then, the quality of the hot air discharged from the air outlet at the bottom of the shell is improved, so as to achieve the purpose of improving the indoor air quality during heating. Moreover, based on the fact that the hot air is discharged from the air outlet at the bottom of the shell, the hot air can be fully filled in the human activity area. Moreover, the radiant heat generated by the electric heating film can also be transmitted through the air inlet. Thereby, the heating effect of the purification electric heating film heater is improved as a whole.

[0006] In one embodiment, a first heating channel is formed between the first side of the electric heating film and the shell, and a second heating channel is formed on the second side of the electric heating film, the inlet end of the first heating channel is connected to the air inlet, the outlet end of the first heating channel is connected to the inlet end of the second heating channel, and the outlet end of the second heating channel is connected to the ventilation hole.

[0007] In one embodiment, the electric heating film is a cylindrical structure, the bottom end of the electric heating film is arranged on the partition, the electric heating film surrounds the ventilation holes on the partition on the inner side, the top end of the electric heating film is spaced apart from the top wall of the shell, the electric heating film and the side wall of the shell are spaced apart to form the first heating channel, the air inlet is arranged on the side wall of the shell, and the space enclosed by the electric heating film is the second heating channel.

[0008] In one embodiment, the electric heating film is a cylindrical tube or a prismatic tube.

[0009] In one embodiment, a flow guide is provided in the electrothermal film, the flow guide is arranged along the axial direction of the electrothermal film, and the flow guide is spaced apart from the second side surface of the electrothermal film to form the second heating channel.

[0010] In one embodiment, the partition is an annular plate, the outer ring of the annular plate is connected to the side wall of the shell, the inner ring of the annular plate constitutes the ventilation hole, the air purification device completely covers the ventilation hole, and the bottom end of the guide member is connected to or abuts the air purification device.

[0011] In one embodiment, the partition is a partition plate, the outer ring of the partition plate is connected to the side wall of the shell, the middle part of the partition plate is a grille, the through holes of the grille constitute the ventilation holes, and the bottom end of the guide member is connected to or abuts against the grille.

[0012] In one embodiment, the guide member is a guide block, a groove is provided on the bottom surface of the guide block, the exhaust member includes a centrifugal fan, the blades of the centrifugal fan are located below the air purification device, the motor of the centrifugal fan is located in the groove, and the main shaft of the motor passes through the air purification device and is connected to the blades.

[0013] In one embodiment, the guide member is a guide tube, the top of the guide tube is provided with a top wall, the exhaust member includes a centrifugal fan, the blades of the centrifugal fan are located below the air purification device, the motor of the centrifugal fan is located in the guide tube, and the main shaft of the motor passes through the air purification device and is connected to the blades.

[0014] In one of the embodiments, the main shaft of the motor is supported on the bottom wall of the housing.

[0015] In one embodiment, the air purification device is located in the air outlet cavity, and an air outlet grille and an air inlet grille are provided on the side wall of the shell. The air outlet is composed of the through holes of the air outlet grille, and the air inlet is composed of the through holes of the air inlet grille.

[0016] In one embodiment, the air purification device includes a primary filter, a long-term HEPA filter and an activated carbon particle filter, and the primary filter, the long-term HEPA filter and the activated carbon particle filter are stacked in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of the purification electric film heater described in this embodiment;

[0018] Figure 2 for Figure 1 A cross-sectional view of the purification electric film heater shown in;

[0019] Figure 3 It is a cross-sectional view of the electric heating film, the guide member and the air purification device in the purification electric heating film heater of this embodiment after being assembled;

[0020] Figure 4 It is a cross-sectional view of the assembled electric heating film, air guide and air purification device in the purification electric heating film heater described in another embodiment.

[0021] Description of reference numerals:

[0022] 10. Purifying electric heating film heater; 11. Shell; 111. Heating chamber; 112. Air outlet chamber; 113. Air inlet; 114. Air outlet; 115. Air outlet grille; 116. Air inlet grille 116; 12. Partition; 13. Air purification device; 14. Air exhaust member; 141. Fan blade; 142. Motor; 15. Electric heating film; 151. First heating channel; 152. Second heating channel; 16. Flow guide member. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0026] like Figure 1 and Figure 2 As shown, in one embodiment, a purification electric heating film heater 10 is provided, including a housing 11, wherein a partition 12 is provided in the housing 11, and the space enclosed by the housing 11 is divided into a heating chamber 111 and an air outlet chamber 112. The heating chamber 111 is provided with an electric heating film 15 for heating the air entering the heating chamber 111.

[0027] The air outlet cavity 112 is located at the bottom of the shell 11. The portion of the shell 11 that forms the heating cavity 111 is provided with an air inlet 113, and the portion of the shell 11 that forms the air outlet cavity 112 is provided with an air outlet 114. That is, the air heated from the purification electric heating film heater 10 will be discharged into the room from the air outlet 114 at the bottom of the shell 11, so that the hot air is fully filled in the human activity area. Moreover, the radiant heat generated by the electric heating film 15 can also be transmitted through the air inlet 113. Thereby, the heating effect of the purification electric heating film heater 10 is improved as a whole. Specifically, the emissivity of the electric heating film 15 is 0.7 to 0.9.

[0028] Specifically, the partition 12 is provided with a ventilation hole, and the housing 11 is provided with an air extraction member 14, which is used to guide the hot air in the heating chamber 111 from the ventilation hole into the air outlet chamber 112. Under the action of the air extraction member 14, the indoor air enters the heating chamber 111 from the air inlet 113, and the heated air enters the air outlet chamber 112 from the ventilation hole, and then is discharged into the room from the air outlet 114 of the air outlet chamber 112. In addition, an air purification device 13 is provided at the ventilation hole, so that when the heated air enters the air outlet chamber 112 from the heating chamber 111, it will be filtered and purified by the air purification device 13, so as to avoid the situation that a small amount of harmful odor generated by the electric heating film 15 in the process of providing heat is discharged into the room, so as to achieve the purpose of improving the indoor air quality during heating.

[0029] More specifically, the air purification device 13 includes a primary filter, a long-term HEPA filter and an activated carbon particle filter, which are stacked in sequence. The primary filter is used to filter large particles of impurities, dust and hair, etc. The long-term HEPA filter is used to filter and purify PM2.5, bacteria, pollen and other substances. The activated carbon particle filter is mainly used to adsorb and purify harmful gas molecules in the air.

[0030] The air inlet 113 and the air outlet 114 on the housing 11 can be formed by setting the side wall of the housing 11 as a grille, so that each through hole of the grille used to form the heating chamber 111 constitutes the air inlet 113, and each through hole of the grille used to form the air outlet chamber 112 constitutes the air outlet 114. Figure 1 As shown, an air outlet grille 115 and an air inlet grille 116 are provided on the side wall of the housing 11, the air outlet 114 is composed of the through holes of the air outlet grille 115, and the air inlet 113 is composed of the through holes of the air inlet grille 116. The heated air can be discharged into the room from all directions through the air outlet 114. The radiant heat generated by the electric heating film 15 can be transmitted into the room from all directions through the air inlet gate, further improving the heating experience.

[0031] The air purification device 13 is arranged at the ventilation hole. Specifically, the air purification device 13 can be arranged in the heating chamber 111 or the air outlet chamber 112 and intercepted at the ventilation hole; the air purification device 13 can also be completely shielded in the ventilation hole so that the hot air is filtered and purified by the air purification device 13 when passing through the ventilation hole.

[0032] The air suction member 14 is mainly used to provide power for the circulation of air. In order to allow the hot air to quickly and effectively pass through the air purification device 13, the air suction member 14 and the air purification device 13 can be arranged adjacent to each other. Figure 2 As shown, the air suction member 14 includes a centrifugal fan, and the blades 141 of the centrifugal fan are stacked with the air purification device 13.

[0033] Further, in one embodiment, if Figure 2 As shown, a first heating channel 151 is formed between the first side of the electrothermal film 15 and the housing 11, and a second heating channel 152 is formed on the second side of the electrothermal film 15. The inlet end of the first heating channel 151 is communicated with the air inlet 113, the outlet end of the first heating channel 151 is communicated with the inlet end of the second heating channel 152, and the outlet end of the second heating channel 152 is communicated with the ventilation hole.

[0034] Thus, the indoor air entering from the air inlet 113 is first heated by the electric heating film 15 in the first heating channel 151 and then enters the second heating channel 152, where it is heated again by the electric heating film 15, thereby extending the heat exchange time of the air in the heating chamber 111, fully transferring the heat generated by the electric heating film 15 to the air, and improving the heating efficiency.

[0035] Specifically, the electrothermal film 15 can be a plate or a cylindrical structure. For example, when the electrothermal film 15 is a plate, the air inlet 113 can be arranged on the side wall of the housing 11 opposite to the first side surface, and the vent is arranged on the partition 12 on the side where the second side surface of the electrothermal film 15 is located.

[0036] like Figures 2 to 4 As shown, in one embodiment, when the electric heating film 15 is a cylindrical structure, the bottom end of the electric heating film 15 is arranged on the partition 12, and the electric heating film 15 surrounds the ventilation hole on the partition 12 inside. The top end of the electric heating film 15 is spaced apart from the top wall of the shell 11. The electric heating film 15 and the side wall of the shell 11 are spaced apart to form the first heating channel 151, and the air inlet 113 is arranged on the side wall of the shell 11. The space surrounded by the electric heating film 15 is the second heating channel 152.

[0037] Under the action of the air suction member 14, the indoor air entering the first heating channel 151 from the air inlet 113 is preliminarily heated, and then the heated air flows from the top of the electrothermal film 15 into the second heating channel 152, and is heated again in the second heating channel 152, fully absorbing the heat generated by the electrothermal film 15. Then the hot air flows into the air outlet cavity 112 from the ventilation hole.

[0038] Specifically, if Figure 3 and Figure 4 As shown, the electric heating film 15 of the tubular structure can be a cylindrical tube or a prismatic tube. When the electric heating film 15 is a tubular structure, the electric heating film 15 and the housing 11 can be coaxially arranged.

[0039] Further, in one embodiment, if Figures 2 to 4 As shown, the electric heating film 15 is provided with a guide member 16. The guide member 16 is arranged along the axial direction of the electric heating film 15, and the guide member 16 is spaced apart from the second side surface of the electric heating film 15 to form the second heating channel 152.

[0040] The guide member 16 occupies the space surrounded by the electrothermal film 15, so that the air entering the second heating channel 152 is fully close to the second side of the electrothermal film 15, thereby improving the efficiency of reheating the air in the second heating channel 152. The shape of the guide member 16 can match the shape of the electrothermal film 15, for example Figure 3 and Figure 4 As shown, the side wall shape of the guide member 16 is consistent with that of the electric heating film 15, and the two are evenly spaced. The distance between the guide member 16 and the electric heating film 15 can be 10 mm to 80 mm.

[0041] Moreover, when the guide member 16 is provided in the electrothermal film 15, in order to make the ventilation hole communicate with the outlet end of the second heating channel 152. When the through hole is composed of a plurality of small holes arranged at intervals, the ventilation hole can be arranged on the portion of the partition 12 between the electrothermal film 15 and the guide member 16. Alternatively, when the through hole includes only one large hole, the aperture of the ventilation hole is at least larger than the outer diameter of the guide member 16, so that the hot air in the second heating channel 152 can enter the air outlet cavity 112 from the ventilation hole.

[0042] For example, Figure 2As shown, in one embodiment, the partition 12 is an annular plate, the outer ring of the annular plate is connected to the side wall of the housing 11, and the inner ring of the annular plate constitutes the ventilation hole. The electrothermal film 15 surrounds the ventilation hole inside. The aperture of the ventilation hole can be consistent with the inner diameter of the electrothermal film 15. The air purification device 13 completely shields the ventilation hole, so that the air in the second heating channel 152 enters the air outlet cavity 112 only after passing through the air purification device 13, and the bottom end of the guide 16 is connected or abutted with the air purification device 13. The hot air in the second heating channel 152 can pass through the part of the ventilation hole located between the guide 16 and the electrothermal film 15, and the hot air is filtered and purified by the air purification device 13 in this process. Moreover, the guide 16 is supported by the air purification device 13 so that it is stably located in the electrothermal film 15.

[0043] Alternatively, in another embodiment, the partition 12 is a partition plate, the outer ring of the partition plate is connected to the side wall of the housing 11, the middle part of the partition plate is a grille, the through holes of the grille constitute the ventilation holes, and the bottom end of the guide member 16 is connected to or abuts against the grille. That is, the guide member 16 is supported and positioned by the partition plate.

[0044] Specifically, the guide member 16 may be a guide block or a guide tube. In order to reduce the overall size of the purification electric film heater 10.

[0045] In one embodiment, when the guide member 16 is a guide block, a groove is provided on the bottom surface of the guide block. The air extraction member 14 includes a centrifugal fan, the blades 141 of the centrifugal fan are located below the air purification device 13, the motor 142 of the centrifugal fan is located in the groove, and the main shaft of the motor 142 passes through the air purification device 13 and is connected to the blades 141.

[0046] The groove is provided on the bottom surface of the guide block for installing the motor 142 , and the fan blades 141 are provided below the air purification device 13 , so as to fully utilize the space in the shell 11 and reduce the size of the purification electric film heater 10 .

[0047] Similarly, in another embodiment, when the guide member 16 is a guide tube, a top wall is provided on the top of the guide tube to ensure that all the air heated in the first heating channel 151 enters the space between the guide tube and the second side of the electric heating film 15. The exhaust member 14 includes a centrifugal fan, the blades 141 of the centrifugal fan are located below the air purification device 13, the motor 142 of the centrifugal fan is located in the guide tube, and the main shaft of the motor 142 passes through the air purification device 13 and is connected to the blades 141. The motor 142 of the centrifugal fan is installed in the guide tube, and the size of the purification electric heating film heater 10 is reduced by rationally arranging the positions of the blades 141, the air purification device 13 and the motor 142.

[0048] Further, the main shaft of the motor 142 is supported on the bottom wall of the housing 11. In particular, when the guide member 16 is connected to or abuts against the air purification device 13, the main shaft can provide support force for the fan blades 141, the air purification device 13 and the guide member 16, so that the air purification device 13 is completely shielded in the ventilation hole.

[0049] When the guide member 16 is a guide tube, the guide tube, the electric heating film 15 and the side wall of the shell 11 can be coaxially arranged.

[0050] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A purification electric heating film heater, characterized in that: The invention comprises a shell, wherein a partition is provided in the shell, and the space enclosed by the shell is divided into a heating chamber and an air outlet chamber, wherein the air outlet chamber is located at the bottom of the shell, and the portion of the shell forming the heating chamber is provided with an air inlet, and the portion of the shell forming the air outlet chamber is provided with an air outlet, an electric heating film is provided in the heating chamber, a ventilation hole is provided on the partition, an air purification device is provided at the ventilation hole, and an air exhaust member is provided in the shell, for introducing the hot air in the heating chamber from the ventilation hole into the air outlet chamber; The electric heating film is provided with a flow guide, the flow guide is arranged along the axial direction of the electric heating film, and the flow guide is spaced apart from the second side surface of the electric heating film to form a second heating channel; A first heating channel is formed between the first side of the electric heating film and the shell, the inlet end of the first heating channel is connected to the air inlet, the outlet end of the first heating channel is connected to the inlet end of the second heating channel, and the outlet end of the second heating channel is connected to the ventilation hole.

2. The purification electric film heater according to claim 1, characterized in that: The electric heating film is a cylindrical structure, the bottom end of the electric heating film is arranged on the partition, the electric heating film surrounds the ventilation holes on the partition inside, the top end of the electric heating film is spaced apart from the top wall of the shell, the electric heating film and the side wall of the shell are spaced apart to form the first heating channel, the air inlet is arranged on the side wall of the shell, and the space surrounded by the electric heating film is the second heating channel.

3. The purification electric film heater according to claim 2 is characterized in that: The electric heating film is a cylindrical tube or a prismatic tube.

4. The purification electric heating film heater according to claim 1, characterized in that: The partition is an annular plate, the outer ring of which is connected to the side wall of the shell, the inner ring of which constitutes the ventilation hole, the air purification device completely covers the ventilation hole, and the bottom end of the guide is connected to or abuts against the air purification device.

5. The purification electric film heater according to claim 1, characterized in that: The partition is a partition plate, the outer ring of which is connected to the side wall of the shell, the middle part of the partition plate is a grille, the through holes of the grille constitute the ventilation holes, and the bottom end of the guide is connected to or abuts against the grille.

6. The purification electric film heater according to claim 1, characterized in that: The guide member is a guide block, a groove is provided on the bottom surface of the guide block, the exhaust member includes a centrifugal fan, the blades of the centrifugal fan are located below the air purification device, the motor of the centrifugal fan is located in the groove, and the main shaft of the motor passes through the air purification device and is connected to the blades.

7. The purification electric film heater according to claim 1, characterized in that: The guide member is a guide tube, a top wall is provided on the top of the guide tube, the exhaust member includes a centrifugal fan, the blades of the centrifugal fan are located below the air purification device, the motor of the centrifugal fan is located in the guide tube, and the main shaft of the motor passes through the air purification device and is connected to the blades.

8. The purification electric heating film heater according to claim 6 or 7, characterized in that: The main shaft of the motor is supported on the bottom wall of the housing.

9. The purification electric film heater according to any one of claims 1 to 5, characterized in that: The air purification device is located in the air outlet cavity, and an air outlet grille and an air inlet grille are provided on the side wall of the shell. The air outlet is composed of the through holes of the air outlet grille, and the air inlet is composed of the through holes of the air inlet grille.

10. The purification electric film heater according to any one of claims 1 to 5, characterized in that: The air purification device comprises a primary filter, a long-term HEPA filter and an activated carbon particle filter, and the primary filter, the long-term HEPA filter and the activated carbon particle filter are stacked in sequence.

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