Hanging type cross-flow fan with simple heating function

Abstract

The invention discloses a hanging type cross-flow fan with a simple heating function, and relates to the technical field of cross-flow fans, the hanging type cross-flow fan comprises a volute, the two ends of the volute are each fixedly connected with a side hanging plate, a cross-flow impeller is rotationally connected between the pair of side hanging plates, and one end of one side hanging plate is fixedly connected with an impeller motor; a rotor of the impeller motor penetrates through the side hanging plates and is coaxially and fixedly connected with the cross-flow impeller, a tongue plate is fixedly connected between the pair of side hanging plates, a flexible heating piece is arranged on the inner wall of the volute, a heating piece scraping plate is arranged on one side of the flexible heating piece, and a scraping plate driving mechanism used for driving the heating piece scraping plate to rotate is arranged on the side hanging plates. By arranging the flexible heating piece similar to the inner contour of the volute, the flexible heating piece can be attached to the inner wall of the volute for heating, in this way, airflow wind resistance can be reduced, airflow heating time and area can be increased, local high temperature of the cross-flow impeller is avoided, and the heating effect is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of cross-flow fan technology, specifically a wall-mounted cross-flow fan with a simple heating function. Background Technology

[0002] A cross-flow fan mainly consists of three parts: an impeller, a duct, and a motor. The impeller is typically made of aluminum alloy or engineering plastic. Aluminum alloy impellers are high-strength, lightweight, and heat-resistant, allowing for long-term stable operation without deformation. Plastic impellers are injection molded and then ultrasonically welded; they are generally used in lower-speed applications and have a larger diameter. The duct is usually made of stamped metal sheet, but can also be cast from plastic or aluminum alloy. The streamlined design of the casing effectively reduces airflow loss, significantly improving the fan's efficiency. The motor is the power source of the cross-flow fan and can be powered by AC or DC. AC power primarily uses shaded-pole motors and capacitor-start motors, while DC power uses brushless DC motors. The drive motor is generally flexibly mounted to the impeller and fixed to the duct.

[0003] To meet the heating function requirements, existing cross-flow fans require external independent heating equipment or complex heating modules and air ducts, resulting in a bulky structure and limited contact time and area between the airflow and the heating element, leading to insufficient heat transfer.

[0004] Therefore, it is necessary to invent a wall-mounted cross-flow fan with simple heating function to solve the above problems. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Some simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of this section, the abstract, and the title, and such simplifications or omissions should not be used to limit the scope of the invention.

[0006] To address the issues raised in the background art, such as the need for external independent heating devices or complex heating modules and ducts in cross-flow fans, which result in bulky structures and limited contact time and area between the airflow and heating elements, leading to insufficient heat transfer, this invention adopts the following technical solution: A wall-mounted cross-flow fan with simple heating function includes a volute. A side mounting plate is fixedly connected to both ends of the volute. A cross-flow impeller is rotatably connected between the pair of side mounting plates. An impeller motor is fixedly connected to one end of one side mounting plate. The rotor of the impeller motor passes through the side mounting plate and is coaxially fixedly connected to the cross-flow impeller. A tongue plate is fixedly connected between the pair of side mounting plates. The volute has a flexible heating element on its inner wall. A heating element scraper is provided on one side of the flexible heating element. A scraper drive mechanism for driving the heating element scraper to rotate is provided on the side mounting plate. The scraper drive mechanism includes a pair of swing arms disposed between the pair of side mounting plates and rotatably connected to one side of the side mounting plate. An incomplete gear is fixedly connected to one end of one swing arm, and a transmission gear meshes with the incomplete gear. A servo motor is fixedly connected to one side of the other side mounting plate. The rotor of the servo motor passes through the side mounting plate and is coaxially fixedly connected to the transmission gear.

[0007] As a further aspect of the present invention: each side plate is fixedly connected with a fixing lug.

[0008] As a further aspect of the present invention: an air duct cavity is formed between the tongue plate and the volute, the air duct cavity including an air inlet duct disposed on one side of the tongue plate and an air outlet duct disposed on the other side of the tongue plate.

[0009] As a further aspect of the present invention: the inner wall of the volute is provided with an installation groove, the flexible heating element is located in the installation groove, and the curvature of the flexible heating element is the same as that of the inner wall of the volute.

[0010] As a further aspect of the present invention: a heat insulation layer is bonded to the mounting groove, and the flexible heating element is bonded to the heat insulation layer.

[0011] As a further aspect of the present invention: a guide plate is fixedly connected to the inner wall of the volute, and the heating element scraper is slidably connected to the guide plate.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. A cross-flow fan with simple heating function uses a flexible heating element that closely matches the inner contour of the volute. This element can be attached to the inner wall of the volute for heating, which reduces airflow resistance, increases the heating time and area of ​​the airflow, and avoids local high temperature of the cross-flow impeller, thus ensuring the heating effect. In addition, since the flexible heating element can be directly attached to the inner wall of the volute, the installation is relatively convenient.

[0013] 2. A cross-flow fan with simple heating function is equipped with a heating element scraper. The scraper drive mechanism drives the scraper to move along the path of the flexible heating element to remove dust, thereby reducing the amount of dust adhering to the surface of the flexible heating element, avoiding dust covering and affecting heat transfer, and thus improving the uniformity of heating. Attached Figure Description

[0014] Figure 1 This is a three-dimensional view of the overall structure of the present invention; Figure 2 This is the present invention. Figure 1 A three-dimensional view of the structure excluding the volute and tongue plate; Figure 3 This is a planar sectional view of the volute casing of the present invention; Figure 4 This is a three-dimensional structural view of the scraper drive mechanism of the present invention; Figure 5 This is a three-dimensional structural view of the heating element scraper and guide plate of the present invention.

[0015] The reference numerals and names in the figure are as follows: 1. Volute; 2. Side mounting plate; 3. Cross-flow impeller; 4. Impeller motor; 5. Tongue plate; 6. Flexible heating element; 7. Heating element scraper; 8. Scraper drive mechanism; 81. Swing arm; 82. Incomplete gear; 83. Transmission gear; 84. Servo motor; 9. Mounting slot; 10. Insulation layer; 11. Fixing lug; 12. Guide plate. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] This invention provides, for example Figure 1-5 The illustrated hanging cross-flow fan with simple heating function includes a volute 1. A side mounting plate 2 is fixedly connected to both ends of the volute 1. A cross-flow impeller 3 is rotatably connected between the pair of side mounting plates 2. An impeller motor 4 is fixedly connected to one end of one of the side mounting plates 2. The rotor of the impeller motor 4 passes through the side mounting plate 2 and is coaxially fixed to the cross-flow impeller 3. A tongue plate 5 is fixedly connected between the pair of side mounting plates 2. An air duct cavity is formed between the tongue plate 5 and the volute 1. The air duct cavity includes an air inlet duct on one side of the tongue plate 5 and an air outlet duct on the other side of the tongue plate 5. The volute 1, side mounting plates 2, cross-flow impeller 3, impeller motor 4, and tongue plate 5 are the basic components of a current cross-flow fan structure, and will not be elaborated further here. The air duct cavity provides the air inlet and outlet for the rotating cross-flow impeller.

[0018] Furthermore, in the above technical solution, each side mounting plate 2 is fixedly connected with a fixing lug 11, which can be connected to the wall with bolts so that the cross-flow fan of this application can be wall-mounted.

[0019] In this embodiment, a flexible heating element 6 is provided on the inner wall of the volute 1. An installation groove 9 is provided on the inner wall of the volute 1, and the flexible heating element 6 is located in the installation groove 9. The flexible heating element 6 has the same curvature as the inner wall of the volute 1. The thickness of the flexible heating element 6 is set at 0.2-0.4 mm, and its working temperature is set at 20-40 degrees Celsius. The flexible heating element 6 is a flexible thick film heating element or an electrothermal fabric with low surface load. By making the flexible heating element 6 into an arc shape similar to the contour of the inner wall of the volute 1 and fitting it into the installation groove 9 on the inner wall of the volute 1, when the impeller motor 4 drives the cross-flow impeller 3 to rotate, the airflow can be forced and evenly blown over the surface of the flexible heating element 6. Because it is attached to the inner wall of the volute 1 for heating, the airflow resistance can be reduced, the airflow heating time and area can be increased, and the local high temperature of the cross-flow impeller 3 can be avoided, thus ensuring the heating effect.

[0020] It is worth noting that the flexible heating element 6 needs to have multiple temperature detection modules built in. These temperature detection modules are chip-type temperature sensors, which are used to detect the temperature of the area of ​​the flexible heating element 6 so that the problem of uneven heating can be solved by cleaning the dust later.

[0021] Furthermore, in the above technical solution, a heat insulation layer 10 is bonded inside the mounting groove 9, and the flexible heating element 6 is bonded to the heat insulation layer 10. The heat insulation layer 10 is made of heat insulation cotton, which can provide heat insulation and heat preservation for the flexible heating element 6. This can reduce the heat loss of the flexible heating element 6 and improve the heating effect. Since the flexible heating element 6 and the heat insulation layer 10 are bonded to the mounting groove 9 in sequence, it is easy to assemble and install.

[0022] In this embodiment, a heating element scraper 7 is provided on one side of the flexible heating element 6. The heating element scraper 7 is a high-temperature resistant silicone scraper with a bracket. Its function is to clean the dust on the surface of the flexible heating element 6 in order to reduce the amount of dust adhering to the flexible heating element 6. This can prevent dust from hindering heat transfer, improve the uniformity of heating, and increase the heating life.

[0023] In this embodiment, a scraper drive mechanism 8 for driving the scraper 7 of the heating element to rotate is provided on the side plate 2. The scraper drive mechanism 8 includes a pair of swing arms 81, which are disposed between a pair of side plates 2 and are rotatably connected to one side of the side plate 2. One end of one swing arm 81 is fixedly connected to an incomplete gear 82, and a transmission gear 83 is meshed on the incomplete gear 82. A servo motor 84 is fixedly connected to one side of the other side plate 2. The rotor of the servo motor 84 passes through the side plate 2 and is coaxially fixedly connected to the transmission gear 83. In this application, the cross-flow impeller 3 has a shaft that passes through one end of the swing arm 81 without contacting it. When it is necessary to clean the dust on the surface of the flexible heating element 6, the servo motor 84 can be started to drive forward and reverse. The transmission gear 83 can mesh with the incomplete gear 82 to rotate. The incomplete gear 82 can drive the swing arm 81 to rotate around the shaft. In this way, the swing arm 81 can drive the scraper 7 of the heating element to perform a scraping motion along the path on the surface of the flexible heating element 6, so as to achieve the purpose of cleaning the dust on the surface of the flexible heating element 6.

[0024] Furthermore, in the above technical solution, a guide plate 12 is fixedly connected to the inner wall of the volute 1, and the heating element scraper 7 is slidably connected to the guide plate 12. In this application, the cross-section of the guide plate 12 is I-shaped and its outline is similar to that of the volute 1. When the heating element scraper 7 rotates around the axis, the guide plate 12 can provide sliding support for the heating element scraper 7 to ensure the stability of the dust removal movement of the heating element scraper 7.

[0025] The specific models and specifications of the flexible heating element 6, impeller motor 4, and servo motor 84 proposed in this application need to be selected and determined according to the actual specifications of the device. The specific selection calculation method, circuit connection method and control method all adopt the existing technology in this field, and the power supply is also common knowledge in this field, so it will not be described in detail.

[0026] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wall-mounted cross-flow fan with simple heating function, comprising a volute (1), wherein a side mounting plate (2) is fixedly connected to both ends of the volute (1), a cross-flow impeller (3) is rotatably connected between the pair of side mounting plates (2), an impeller motor (4) is fixedly connected to one end of one of the side mounting plates (2), the rotor of the impeller motor (4) passes through the side mounting plate (2) and is coaxially fixedly connected to the cross-flow impeller (3), and a tongue plate (5) is fixedly connected between the pair of side mounting plates (2), characterized in that, The inner wall of the volute (1) is provided with a flexible heating element (6), and a heating element scraper (7) is provided on one side of the flexible heating element (6). A scraper driving mechanism (8) for driving the heating element scraper (7) to rotate is provided on the side plate (2). The scraper drive mechanism (8) includes a pair of swing arms (81), which are arranged between a pair of side plates (2) and the swing arms (81) are rotatably connected to one side of the side plate (2). One end of one swing arm (81) is fixedly connected to an incomplete gear (82), and a transmission gear (83) is meshed on the incomplete gear (82). A servo motor (84) is fixedly connected to one side of the other side plate (2), and the rotor of the servo motor (84) passes through the side plate (2) and is coaxially fixedly connected to the transmission gear (83).

2. A wall-mounted cross-flow fan with simple heating function according to claim 1, characterized in that, Each side panel (2) is fixedly connected to a fixed lug (11).

3. A wall-mounted cross-flow fan with simple heating function according to claim 1, characterized in that, A duct cavity is formed between the tongue plate (5) and the volute (1), the duct cavity including an air inlet duct provided on one side of the tongue plate (5) and an air outlet duct provided on the other side of the tongue plate (5).

4. A wall-mounted cross-flow fan with simple heating function according to claim 1, characterized in that, The inner wall of the volute (1) is provided with an installation groove (9), and the flexible heating element (6) is located in the installation groove (9). The curvature of the flexible heating element (6) is the same as that of the inner wall of the volute (1).

5. A wall-mounted cross-flow fan with simple heating function according to claim 4, characterized in that, A heat insulation layer (10) is bonded inside the mounting groove (9), and the flexible heating element (6) is bonded to the heat insulation layer (10).

6. A wall-mounted cross-flow fan with simple heating function according to claim 1, characterized in that, The inner wall of the volute (1) is fixedly connected to a guide plate (12), and the heating element scraper (7) is slidably connected to the guide plate (12).

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