Long and thin bath heater structure

Abstract

The utility model discloses a long strip thin shape bath heater structure, including main casing, its inside is equipped with the air guide of first guide plate and second guide plate constitution, air guide one end is equipped with wind wheel, and the other end is separately equipped with air blowing air channel and exhaust air channel, and the junction is equipped with the air direction valve. The air direction valve includes motor, push plate and the hinge plate of guide groove, and the motor drives push plate, and is through the guide post of push plate end portion and the cooperation of guide groove, and drives the hinge plate rotation to switch the air flow passage. The air blowing air channel department is equipped with the heating module. The utility model discloses through optimizing the air duct layout and the air direction valve structure, has realized the thin shape of bath heater overall structure, has reduced the installation space, has guaranteed the heating and exhaust function high -efficient, reliable switching simultaneously, has compact structure, energy -conserving, the quiet operation advantage of running.

Description

Technical Field

[0001] This utility model relates to the field of bathroom heater technology, and in particular to a long, thin bathroom heater structure. Background Technology

[0002] A bathroom heater is an electrical appliance that integrates heating, lighting, and ventilation functions, and is a common feature in modern home bathrooms. Currently, most bathroom heaters on the market adopt a box-type structure, which is relatively bulky and requires significant ceiling space for installation, creating a feeling of confinement, especially in bathrooms with limited ceiling height. Furthermore, the internal air duct layout and airflow guidance structure of traditional bathroom heaters are often quite simple, resulting in low efficiency when switching between heating and ventilation functions, leading to significant heat loss and unsatisfactory ventilation. While some products attempt to reduce size, this often results in a cramped internal structure, turbulent airflow, increased noise, or affects the heat dissipation performance of core components such as the motor and heating module, making it difficult to achieve both a slim design and high efficiency.

[0003] Therefore, there is an urgent need for a new type of bathroom heater structure that can achieve overall thinness and save installation space while ensuring smooth internal airflow, reliable function switching, and improving thermal efficiency and user comfort. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a compact, reliable, and energy-efficient elongated thin bathroom heater structure.

[0005] This utility model also provides a long, thin bathroom heater structure, including a main housing. The main housing is provided with an air blowing port, an air inlet, and an exhaust port. Inside the main housing are a first guide plate and a second guide plate, which together form an air duct. One end of the air duct is equipped with a fan, and the other end is connected to both the air blowing duct and the exhaust duct. At the junction of the air blowing duct and the exhaust duct, a wind direction valve for changing the airflow direction is provided. The wind direction valve includes a motor, a push plate, and a hinged plate. The output end of the motor is connected to the push plate. A guide groove is formed on the hinged plate, and a guide post is provided at the end of the push plate away from the motor. The guide post is slidably disposed within the guide groove. The forward and reverse rotation of the motor drives the push plate to move linearly. The linear motion is converted into the rotational motion of the hinged plate by the cooperation of the guide post and the arc-shaped guide groove, thereby precisely controlling the opening and closing angle of the hinged plate and realizing the switching between air blowing and exhaust functions. A heating module is provided at the air blowing duct to heat the flowing air.

[0006] Furthermore, an exhaust seat is installed at the exhaust port for connecting to an external exhaust pipe to improve exhaust efficiency.

[0007] Furthermore, a grille is installed at the air inlet to prevent foreign objects from being sucked in and to improve the appearance.

[0008] Furthermore, the surface of the second guide plate is provided with reinforcing ribs to increase structural strength and prevent vibration noise from being generated when airflow passes through.

[0009] Furthermore, a first limiting rib is provided at the inlet of the blowing air duct, and a second limiting rib is provided at the inlet of the exhaust air duct, which are used to precisely limit the rotation position of the hinge plate to ensure that it can completely close the target air duct.

[0010] Furthermore, the angle between the first limiting rib and the second limiting rib is 20° to 30°. This angle range ensures that the hinge plate has sufficient stroke to achieve effective sealing and opening of the air passage, and that the movement resistance is small.

[0011] Furthermore, a temperature controller is provided on the surface of the heating module to monitor the temperature of the heating element and provide overheat protection.

[0012] Furthermore, the impeller is a centrifugal impeller, with its axis parallel to the extension direction of the air guide duct. This structure makes full use of the elongated shell space, which helps to reduce the overall thickness and form a highly efficient centrifugal air supply system.

[0013] Furthermore, the hinge plate is made of high-temperature resistant engineering plastic to ensure reliability during long-term operation in hot air environments; the guide groove is an arc-shaped long groove, the curvature of which is designed to optimize power transmission.

[0014] Furthermore, the main housing is elongated and flat, with a thickness less than half its width. This ultra-thin shape allows for easy integration into aluminum ceiling panels, significantly reducing the required installation space.

[0015] The beneficial effects of this utility model are as follows: 1. By optimizing the layout of the impeller, air duct, and heating module, this structure successfully reduces the thickness of the main body of the bathroom heater, resulting in a beautiful appearance and saving installation space, making it especially suitable for modern thin ceilings. 2. The unique guide plate design forms a smooth airflow duct. Combined with the air direction valve mechanism consisting of a motor, push plate, and hinged plate with guide grooves, it achieves rapid, accurate, and stable switching between the two modes of blowing warm air and exhausting air, improving heat energy utilization and ventilation efficiency. 3. The design of reinforcing ribs and limiting ribs enhances structural rigidity, reduces component vibration, and lowers operating noise. 4. The thermostat provides overheat protection, improving the product's safety performance. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the airflow path in the heating mode of this utility model.

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the airflow path in the exhaust mode of this utility model.

[0021] Explanation of reference numerals in the attached drawings: Main housing 1, air inlet 101, grille 102, first guide plate 103, second guide plate 104, reinforcing rib 105, first limiting rib 106, second limiting rib 107, heating module 2, temperature controller 201, exhaust seat 3, motor 4, guide column 501, push plate 5, impeller 6, hinge plate 7, guide groove 701. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] like Figures 1 to 4 As shown in the figure, the main shell 1 of this embodiment is preferably made of aluminum alloy plate with a thickness of 0.6mm, which is stamped and bent into a long strip shape. Its preferred dimensions are: length 900mm, width 300mm, and thickness only 120mm, which is much less than half the width. The shape is very flat, which makes it easy to integrate and install in a standard aluminum ceiling panel of 300mm×300mm or 300mm×600mm.

[0024] A circular air inlet 101 is provided in the main housing 1. An ABS engineering plastic grille 102 is fixedly installed at the air inlet 101 by means of a snap-fit. The grille 102 has a grid spacing of 5 to 8 mm, which can effectively prevent large foreign objects from being sucked in while ensuring sufficient air intake area.

[0025] On the short side of the main housing 1 opposite to the air inlet 101, there is a rectangular exhaust port. A PP material exhaust seat 3 is installed on the exhaust port by means of a sealing ring and screws. The other end of the exhaust seat 3 is provided with a standard φ75mm circular interface for connecting the exhaust hose leading to the outside.

[0026] The interior of the main housing 1 is the core functional area. First, a first guide plate 103, made of galvanized steel sheet, is fixed to the inner top wall of the main housing 1 with four M4 screws. Then, a second guide plate 104, also made of galvanized steel sheet, is fixed or welded to the inner side wall of the main housing 1 by its flanges on both sides engaging with slots. The curvature of the first guide plate 103 and the curved surface of the second guide plate 104 complement each other, together forming a smooth airflow duct with an approximately rectangular cross-section. The cross-sectional area of ​​this airflow duct remains essentially consistent from one end to the other, approximately 35 cm², to ensure smooth airflow.

[0027] At one end (right end) of the air duct, a centrifugal impeller 6 is installed. This impeller 6 adopts a multi-blade design, with a diameter of 80mm and a width of 40mm, and is driven by a 24V DC motor of model RS-385SH. The axis of the motor is placed parallel to the extension direction of the air duct (i.e., the length direction of the main housing 1), and this layout is one of the keys to achieving the ultra-thin design of the product.

[0028] At the other end (left end) of the air duct, the airflow channel splits into two, forming two paths: the blowing air duct and the exhaust air duct.

[0029] Airflow duct: The air outlet leading to the front of the main housing 1 (not shown separately in the figure, usually covered by an air outlet grille). A heating module 2 is installed along the path of this airflow duct. This module uses a PTC ceramic heating element with a rated power of 2000W, and its aluminum heat sink fins are oriented in the same direction as the airflow to maximize heat exchange efficiency.

[0030] Exhaust duct: Directly leads to the exhaust seat 3. At the fork between the air duct and the exhaust duct, a core switching component—the airflow direction valve—is located. This airflow direction valve consists of three main components: Motor 4: A small 12V DC geared motor with an output speed of 10rpm is used and is fixed to the main housing 1 by a small bracket.

[0031] Push plate 5: It is a long strip-shaped injection molded part, one end of which is connected to the output shaft of motor 4 through a bushing, and can be driven by motor 4 to perform linear reciprocating motion.

[0032] Hinged plate 7: This is an approximately elliptical plate made of PPS engineering plastic with a temperature resistance exceeding 120°C. Its center is rotatably mounted on a fulcrum at the bifurcation point of the air passage via a stainless steel shaft. A specific arc-shaped guide groove 701 is formed on the plate body of hinged plate 7.

[0033] The push plate 5 is provided with a guide post 501 (usually a stainless steel pin) at the end away from the motor 4. The guide post 501 is precisely inserted into the arc-shaped guide groove 701 of the hinge plate 7.

[0034] Its working principle is as follows: When motor 4 receives a mode switching command from the control circuit (such as switching from "heating" to "ventilation"), motor 4 starts to rotate, driving push plate 5 to move linearly. The guide post 501 at the end of push plate 5 slides within the arc-shaped guide groove 701 of hinge plate 7. Due to the arc-shaped design of guide groove 701, the linear motion of push plate 5 is converted into the rotational motion of hinge plate 7 around its axis. Motor 4 only needs to rotate by a preset angle (such as 180 degrees) to drive hinge plate 7 to rotate by approximately 25 degrees, thereby precisely moving from one extreme position to another.

[0035] To precisely define the two working positions of the hinge plate 7, two limiting ribs are also provided on the inner wall of the housing: the first limiting rib 106 is located at the inlet edge of the air duct. When the hinge plate 7 rotates to fit tightly against the first limiting rib 106, it completely seals the exhaust duct. At this time, all the air drawn in by the impeller 6 is forced to flow through the heating module 2, and after being heated, it becomes warm air blown out from the front, realizing the heating function (as shown in the image). Figure 2 (As shown).

[0036] The second limiting rib 107 is located at the inlet edge of the exhaust duct. When the hinge plate 7 rotates in the opposite direction until it is tightly fitted with the second limiting rib 107, it completely seals the air blowing duct. At this time, the intake air is directly discharged outdoors through the exhaust duct and exhaust seat 3, realizing the ventilation function (as shown in the state). Figure 3 (As shown). The angle between the first limiting rib 106 and the second limiting rib 107 is precisely designed to be 25°. This angle ensures that the hinge plate 7 can be effectively sealed and that switching resistance is minimized.

[0037] To enhance the rigidity of the second guide plate 104 and prevent it from resonating and generating noise under the action of airflow, three raised reinforcing ribs 105 are stamped on its surface.

[0038] In addition, a normally closed bimetallic thermostat 201 (model such as KSD301) is attached to the surface of the aluminum heat sink of the heating module 2, with an operating temperature set at 85°C. When the heating module 2 overheats due to abnormal conditions (such as blocked air vents), the thermostat 201 will automatically disconnect, cutting off the power supply to the heating element. It will automatically reset after the temperature drops, providing necessary overheat protection.

[0039] Through the aforementioned precise component design, compact spatial layout, and reliable linkage mechanism, this utility model successfully achieves efficient heating and powerful ventilation functions within an ultra-thin body, while maintaining stable operation, low noise, and safety and reliability.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A long, thin bathroom heater structure, comprising a main housing (1), wherein the main housing (1) is provided with an air outlet, an air inlet (101) and an exhaust outlet, characterized in that: The main housing (1) is provided with a first guide plate (103) and a second guide plate (104) inside. The first guide plate (103) and the second guide plate (104) together form an air guide channel. One end of the air guide channel is provided with a fan wheel (6), and the other end is connected to a blowing channel and an exhaust channel respectively. A wind direction valve is provided at the junction of the blowing channel and the exhaust channel. The wind direction valve includes a motor (4), a push plate (5) and a hinge plate (7). The output end of the motor (4) is connected to the push plate (5). A guide groove (701) is provided on the hinge plate (7). A guide post (501) is provided at the end of the push plate (5) away from the motor (4). The guide post (501) is slidably disposed in the guide groove (701). A heating module (2) is provided at the blowing channel.

2. The elongated, thin bathroom heater structure according to claim 1, characterized in that: An exhaust seat (3) is installed at the exhaust port.

3. The elongated, thin bathroom heater structure according to claim 1, characterized in that: A grille (102) is installed at the air inlet (101).

4. The elongated, thin bathroom heater structure according to claim 1, characterized in that: The surface of the second guide plate (104) is provided with reinforcing ribs (105).

5. The elongated, thin bathroom heater structure according to claim 1, characterized in that: The inlet of the blowing air duct is provided with a first limiting rib (106), and the inlet of the exhaust air duct is provided with a second limiting rib (107).

6. The elongated, thin bathroom heater structure according to claim 5, characterized in that: The angle between the first limiting rib (106) and the second limiting rib (107) is 20° to 30°.

7. The elongated, thin bathroom heater structure according to claim 1, characterized in that: A temperature controller (201) is provided on the surface of the heating module (2).

8. The elongated, thin bathroom heater structure according to claim 1, characterized in that: The impeller (6) is a centrifugal impeller, and its axis is parallel to the extension direction of the air duct.

9. The elongated, thin bathroom heater structure according to claim 1, characterized in that: The hinge plate (7) is made of high-temperature resistant engineering plastic, and the guide groove (701) is an arc-shaped long groove.

10. The elongated, thin bathroom heater structure according to claim 1, characterized in that: The main shell (1) is long and flat, and its thickness is less than half of its width.

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