heating equipment

Abstract

To provide a heating device that prevents backflow of strong winds, noise, bad odors and the intrusion of mosquitoes, improves airtightness, and has ventilation, cooling, heating and drying functions. [Solution] The heating device includes a main housing (1), an air source (8), and a heating mechanism disposed within the main housing (1). A first exhaust port communicating with the outside is formed in the side wall of the main housing (1). A second exhaust port (102) and an air inlet (103) communicating with the room are formed in the bottom of the main housing (1). A switching mechanism is provided between the first exhaust port and the second exhaust port (102). The switching mechanism includes a damper (2). The damper (2) is controlled by a drive mechanism and is reversibly disposed between the first exhaust port and the second exhaust port (102). Two arc-shaped adjustment holes are provided in the inner wall of the main housing (1) relative to each other. Both sides of the damper (2) are inserted into the adjustment holes via pin shafts.

Description

[Technical Field]

[0001] The present invention relates to the field of bathroom heating systems, and more particularly to heating systems. [Background technology]

[0002] Heating equipment, especially bathroom heating equipment, must be equipped with ventilation, cooling, heating, and drying functions to improve user comfort. Therefore, bathroom heating equipment usually requires a separate duct design to achieve ventilation and heating functions, and the exhaust system must be equipped with dual indoor and outdoor exhaust outlets and a complex switching mechanism.

[0003] Existing bathroom heating systems primarily include double-fan, independent airflow systems and single-fan, damper-switching systems. Double-fan, independent airflow systems require separate cooling and heating fans, with the cooling and heating ducts physically separated and controlled separately via independent dampers. For example, the bathroom heater disclosed in Chinese utility model publication number CN220321424U relates to the technical field of heating equipment and includes a housing, panel, fan assembly, and heating unit. The housing is equipped with a double negative spiral volute, and the airflow duct is formed within the double negative spiral volute. While this type of design provides dual air sources, the independent dual-system design increases space usage and manufacturing and usage costs. Furthermore, turbulence is likely to occur at the intersection of the hot and cold air ducts, resulting in energy loss. To avoid this problem, additional components such as a partition are required to prevent the two airflows from colliding.

[0004] A single-fan damper switching system requires only one fan to integrate the indoor and outdoor exhaust functions. The air direction switching function is usually achieved by a damper assembly. For example, a Chinese utility model (publication number CN222187341U) discloses a bathroom heater structure with an air intake connected to a heating fan, an exhaust outlet on the main housing, and an air duct on the main housing. The air duct is divided into an exhaust duct and a supply duct. The supply duct is connected to the heating unit, and the exhaust duct is connected to the exhaust outlet. A hinge is installed at the junction of the exhaust duct and the supply duct to switch the air direction. This hinge switches the air direction, allowing strong air to flow only into the supply duct or the exhaust duct, ultimately blowing out warm or cool air. Compared to a double-fan independent air duct system, this system reduces overall volume and manufacturing costs. However, this type of single-fan damper switching system still has the following problems: First, the outdoor air outlet is mostly exposed to the outside and does not have a closing mechanism, which causes problems such as strong wind backflow, noise, bad odors, and mosquito intrusion. Second, the hinge that changes the air direction is driven by a motor, which has low operating precision and is prone to mechanical jamming. The hinge's reversal angle is also driven solely by a motor, which can result in incomplete shielding or damage when the hinge is closed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Chinese Utility Model No. 220321424 [Patent Document 2] Chinese Utility Model No. 222187341 Summary of the Invention

[0006] Therefore, the present invention provides a heating device to solve the above problems. The present invention is realized by the following technical solutions: The heating device comprises a main housing, an air source, and a heating mechanism disposed inside the main housing. A first exhaust port communicating with the outside of the room is formed in a side wall of the main housing. A second exhaust port and an air inlet communicating with the inside of the room are formed in the bottom of the main housing. A switching mechanism is provided between the first exhaust port and the second exhaust port. The switching mechanism includes a damper. The damper is controlled by a drive mechanism to switch between the first exhaust port and the second exhaust port. Two arc-shaped adjustment holes are provided relative to each other on the inner wall of the main housing. Both sides of the damper are penetrated by pin shafts into the adjustment holes. In a first state, the damper completely blocks the first exhaust port, and the pin shaft is located at a first end of the adjustment hole. In a second state, the damper completely blocks the second exhaust port, and the pin shaft is located at a second end of the adjustment hole.

[0007] Preferably, a positioning shield member is also provided inside the first exhaust port, and the positioning shield member forms an inclined plate on the upper part of the second exhaust port, and an opening communicating with the first exhaust port is formed in the inclined plate, and the adjustment hole is located at an angle between the inclined plate and the second exhaust port.

[0008] Preferably, the drive mechanism includes an electromagnetic lock fixed on the positioning shield member, a retractable locking tongue provided at the bottom of the electromagnetic lock, the locking tongue being located opposite the second exhaust port, a damper located between the electromagnetic lock and the second exhaust port, pin shafts on both sides of the damper also connected to the main body housing via torsion springs, the torsion springs including a first torsion arm and a second torsion arm, the first torsion arm being fixed to the main body housing, and the second torsion arm being connected to the pin shaft.

[0009] Preferably, a concave limiting step surface is formed on the inclined plate of the positioning shield member, the limiting step surface conforming to the shape of the damper, and the opening opening into the limiting step surface.

[0010] Preferably, a mounting plate is provided at a distance from the bottom of the main housing, a bracket is connected between the bottom of the main housing and the mounting plate, the inlet of the air source is located at the bottom of the main housing, an exhaust passage isolated from the inlet of the air source is formed between the mounting plate and the second exhaust port, and an outlet of the exhaust passage is provided on the mounting plate.

[0011] Preferably, a grill is provided in the exhaust passage.

[0012] Preferably, the air source is a turbine fan, and the outlet of the air source is located inside the damper.

[0013] Preferably, the heating device includes a PTC heating module arranged in the first exhaust port.

[0014] Preferably, an exhaust duct is provided outside the outdoor exhaust outlet.

[0015] The beneficial effects of the technical solution of the present invention are mainly reflected in the following points:

[0016] 1. The unit employs a switching mechanism that switches between indoor and outdoor exhaust. The switching mechanism has an arc-shaped adjustment hole that limits the flip angle of the damper, allowing the damper to be precisely fixed in place, completely blocking either the first or second exhaust port and ensuring airtightness. Furthermore, as the damper slides along the arc-shaped adjustment hole, the angle and position change simultaneously, allowing it to block both the first and second exhaust ports.

[0017] 2. A positioning shield member is placed inside the first exhaust port, and the damper is aligned with the restricting step surface of the positioning shield member, covering the restricting step surface under normal conditions, completely blocking the first exhaust port that connects to the outdoors, preventing backflow of strong winds, noise, bad odors, and the entry of mosquitoes, and improving the sealing of the entire heating device.

[0018] 3. The damper is dually controlled by an electromagnetic lock and a torsion spring. The electromagnetic lock is fixed on the inclined plate of the positioning shield member, and an adjustment hole defined by the angle between the limit step surface on the inclined plate and the second exhaust port constantly traps the damper between the inclined plate and the second exhaust port. Therefore, the linear movement of the lock tongue is converted into reversal movement of the damper only by the extension and contraction of the lock tongue of the electromagnetic lock. When the thrust exerted by the lock tongue on the damper disappears, the torsion spring drives the damper to automatically reverse and reset to the limit step surface. This solves the problems of reduced control accuracy and mechanical jamming caused by motor drive. [Brief explanation of the drawings]

[0019] Figure 1 is a three-dimensional view of the heating system. FIG. 2 is a front view of the heating device. FIG. 3 is a bottom view of the heating device. FIG. 4 is a side view of the heating device. FIG. 5 is a top view of the heating device. FIG. 6 is a cross-sectional view taken along line A-A in FIG. FIG. 7 is a schematic diagram and a partially enlarged view (first state) of the internal structure of the heating device. FIG. 8 is a schematic diagram and a partially enlarged view (second state) of the internal structure of the heating device. DETAILED DESCRIPTION OF THE INVENTION

[0020] In order to more clearly and in detail show the objects, advantages and features of the present invention, preferred embodiments are illustrated and described below. These embodiments are merely typical examples of the application of the present invention, and any technical solutions formed by equivalent substitution or equivalent transformation are all within the scope of protection of the present invention.

[0021] Furthermore, in the description of the drawings, terms such as "center," "upper," "lower," "left," "right," "front," "rear," "inner," and "outer" that indicate directions and positional relationships are based on the directions and positional relationships shown in the accompanying drawings, and are used for the convenience and simplification of the description. It should be noted that these terms do not suggest or imply that the devices or elements referred to must have a specific direction or be configured and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" in this invention are used for descriptive purposes only and should not be construed as suggesting or implying a ranking of importance or as implicitly specifying the number of technical features shown. Thus, a feature designated as "first" or "second" may explicitly or implicitly include one or more of such features. In this invention, "plurality" means two or more, unless otherwise defined.

[0023] As shown in FIGS. 1 to 6, the present invention discloses a heating device comprising a main housing 1, an air source 8 disposed inside the main housing 1, and a heating mechanism. A first exhaust port 101 communicating with the outdoors is formed in a side wall of the main housing 1, and a second exhaust port 102 communicating with the indoors and an air inlet 103 are formed in the bottom of the main housing 1. When the heating device is operating, air is drawn in through the air inlet 103 via the air source 8 and selectively discharged through the first exhaust port 101 or the second exhaust port 102. When the air source 8 discharges air through the second exhaust port 102, the heating mechanism can achieve functions such as ventilation, cooling, heating, and drying by adjusting a switch as required.

[0024] As shown in FIGS. 5 to 8 , a switching mechanism is provided between the first exhaust port 101 and the second exhaust port 102. This switching mechanism is controlled by a drive mechanism and includes a damper 2 that is reversibly positioned between the first exhaust port 101 and the second exhaust port 102. Two arc-shaped adjustment holes 4 are relatively formed on the inner wall of the main housing 1, and pin shafts 3 pass through the adjustment holes 4 on both sides of the damper 2. Therefore, the adjustment holes 4 can limit the movement range and reversal angle of the damper 2. When the pin shafts 3 on both sides of the damper 2 slide along the arc-shaped adjustment holes 4 on both sides of the main housing 1, the damper 2 reverses as it moves with the pin shafts 3 until they reach the ends of the adjustment holes 4, at which point it stops. In the first state, the damper 2 completely blocks the first exhaust port 101, and the pin shafts 3 are located at the first ends of the adjustment holes 4. In the second state, the damper 2 completely blocks the second exhaust port 102, and the pin shaft 3 is positioned at the second end of the adjustment hole 4, thereby achieving precise switching of the airflow direction and sealing performance at the shielding point of the damper 2.

[0025] As shown in FIGS. 6 to 8 , in some embodiments, a positioning shield member 5 is further provided inside the first exhaust port 101. The inside refers to the side located inside the main body housing 1 and closer to the air source 8. The positioning shield member 5 forms an inclined plate 501 above the second exhaust port 102. The inclined plate 501 has an opening communicating with the first exhaust port 101, and the adjustment hole 4 is located at an angle between the inclined plate 501 and the second exhaust port 102. In a preferred embodiment, first ends of the adjustment hole 4 are located at the top of both sides of the second exhaust port 102, and second ends of the adjustment hole 4 are located inside the inclined plate 501. The movable range of the damper 2 is limited by the adjustment hole 4, and therefore the reversible range of the damper 2 is also limited between the inclined plates 501 and 501. Therefore, when the damper 2 comes into contact with the inclined plate 501, it is ensured that the damper 2 completely blocks the opening set in the inclined plate 501, thereby ensuring that the damper 2 completely blocks the first exhaust port 101 that communicates with the opening.

[0026] As shown in FIGS. 6 to 8 , in some embodiments, the drive mechanism includes an electromagnetic lock 6 fixed on a positioning shield member 5, and a retractable lock tongue 601 is provided at the bottom of the electromagnetic lock 6. When the electromagnetic lock 6 is powered off, the lock tongue 601 extends downward, and when the electromagnetic lock 6 is powered on, the lock tongue 601 retracts upward. The lock tongue 601 is disposed opposite the second exhaust port 102, and the damper 2 is located between the electromagnetic lock 6 and the second exhaust port 102. An upper portion of the positioning shield member 5 is fixed to the main body housing 1, and a positioning plate is formed on the positioning shield member 5 above the opening of the inclined plate 501. The electromagnetic lock 6 is fixed to the positioning plate, and when the lock tongue 601 of the electromagnetic lock 6 extends downward, it passes through the opening and comes into contact with the damper 2 that blocks the inside of the opening, and the lock tongue 601 pushes the damper 2 up to the top of the second exhaust port 102, causing the damper 2 to completely block the second exhaust port 102. When the lock tongue 601 contracts and returns to the top of the opening, the lock tongue 601 no longer comes into contact with the damper 2, and the damper 2 retreats into the opening.

[0027] As shown in FIG. 7 , when the locking tongue 601 contracts, the torsion spring 7 retracts and resets the damper 2, and the pin shafts 3 on both sides of the damper 2 are also connected to the main housing 1 via the torsion springs 7. The torsion springs include a first torsion arm 701 and a second torsion arm 702. The first torsion arm 701 is fixed to the main housing 1, and the second torsion arm 702 is connected to the pin shaft 3. When the locking tongue 601 of the electromagnetic lock 6 expands and presses against the damper 2, the second torsion arm 702 moves with the damper 2 and contracts toward the first torsion arm 701. When the locking tongue 601 of the electromagnetic lock 6 contracts, the thrust exerted by the locking tongue 601 on the damper 2 disappears, and the second torsion arm 702 returns the damper 2 to its original position, completely blocking the opening. Therefore, when the locking tongue 601 of the electromagnetic lock 6 is extended and does not press the damper 2, the damper 2 is always positioned inside the opening and the first exhaust port 101 is completely blocked, preventing backflow of strong winds, noise, bad odors, and the intrusion of mosquitoes. Also, when it is necessary to exhaust air through the first exhaust port 101, the locking tongue 601 of the electromagnetic lock 6 presses the damper 2 toward the second exhaust port 102, ensuring that the air is exhausted to the outside. Because the overall airflow is exhausted to the outside, there is no need to worry about problems such as backflow of strong winds, bad odors, and the intrusion of mosquitoes.

[0028] 6 and 8, in one embodiment, a concave limiting step surface 502 is formed on the inclined plate 501 of the positioning shield member 5, and the limiting step surface 502 matches the shape of the damper 2. An opening is provided in the limiting step surface 502. Because the limiting step surface 502 matches the shape of the damper 2, when the damper 2 is brought into close contact with the limiting step surface 502, it is ensured that the damper 2 completely covers the opening, further improving the sealing of the damper 2 at the opening.

[0029] As shown in FIGS. 1 to 8 , in some embodiments, a mounting plate 9 is provided in the lower space of the main housing 1. The mounting plate 9 is typically used as a connector for the bathroom ceiling, facilitating installation of the heater above the bathroom. A bracket 11 is connected between the bottom of the main housing 1 and the mounting plate 9. The inlet for the air source 8 is located at the bottom of the main housing 1. Specifically, the air inlet 103 of the main housing 1 is located in the gap between the bottom of the main housing 1 and the mounting plate 9. In one embodiment, the air inlet 103 is provided in the mounting plate 9, so that air in the bathroom can be directly drawn into the main housing 1 from the air inlet 103 via the air source 8. In other embodiments, the air inlet 103 is not provided in the mounting plate 9. To achieve exhaust ventilation for the bathroom, the air inlet 103 formed in the gap between the main housing 1 and the mounting plate 9 may be connected to the bathroom.

[0030] As shown in Figures 6 and 8, an exhaust passage 10, which is isolated from the inlet of the air source 8, is formed between the mounting plate 9 and the second exhaust port 102. The outlet of the exhaust passage 10 is located on the mounting plate 9. The exhaust passage 10 is connected to the second exhaust port 102. Therefore, when the air source 8 discharges air to the second exhaust port 102, the air is blown out into the bathroom through the exhaust passage 10. In the selected embodiment, a grill 12 is provided in the exhaust passage 10. In another embodiment, the grill 12 may be replaced with an air guide that guides the direction of the air blown out toward the bathroom.

[0031] 6, in one embodiment, the air source 8 is a turbofan that draws air in from below and expels air to the side. The exhaust port of the air source 8 is located inside the damper 2.

[0032] In one embodiment, the heating device includes a PTC heating module (not shown) installed at the first exhaust port 101. The heating device can be turned on / off or adjusted using a remote control, thereby switching between cool and warm air. The PTC heating module and its installation location can be referenced in existing technology and will not be described in detail here. In other embodiments, the heating device can be replaced with other existing heating devices, such as a hot air ring, which will not be described in detail here. Based on this, a sensing device (not shown) for detecting a human body can also be provided. Upon detecting the presence of a human body, the sensing device automatically turns on the air source 8, further improving automation. The sensing device can employ any sensor product in existing technology that can achieve human body detection, which will not be described in detail here.

[0033] In one embodiment, an exhaust duct 13 is provided outside the outdoor exhaust port to guide the air from the first exhaust port 101 to be discharged outdoors.

[0034] The present invention has multiple implementation methods, and all technical solutions formed by equivalent transformations or equivalent transformations are included in the protection scope of the present invention.

Claims

1. A heating device comprising: a main body housing (1); an air source (8) and a heating mechanism disposed within the main body housing (1); A first exhaust port (101) communicating with the outside is formed in the side wall of the main body housing (1), a second exhaust port (102) communicating with the inside of the room and an air inlet (103) are formed in the bottom of the main body housing (1), and a switching mechanism is provided between the first exhaust port (101) and the second exhaust port (102); The switching mechanism includes a damper (2), the damper (2) is controlled by a drive mechanism, and is reversibly disposed between the first exhaust port (101) and the second exhaust port (102). Two arc-shaped adjustment holes (4) are provided on the inner wall of the main body housing (1). Two side surfaces of the damper (2) are inserted into the adjustment holes (4) via pin shafts (3). In a first state, the damper (2) completely blocks the first exhaust port (101), and the pin shaft (3) is located at the first end of the adjustment hole (4); In the second state, the damper (2) completely blocks the second exhaust port (102), and the pin shaft (3) is located at the second end of the adjustment hole (4).

2. 2. The heating device according to claim 1, further comprising a positioning shield member (5) provided inside the first exhaust port (101), the positioning shield member (5) forming an inclined plate (501) above the second exhaust port (102), the inclined plate (501) having an opening communicating with the first exhaust port (101), and the adjustment hole (4) located at an angle between the inclined plate (501) and the second exhaust port (102).

3. 3. The heating device according to claim 2, wherein the drive mechanism includes an electromagnetic lock (6) fixed on the positioning shield member (5), the electromagnetic lock (6) is fixed to the upper part of the inclined plate (501), and a retractable locking tongue (601) is provided at the lower part of the electromagnetic lock (6), the locking tongue (601) is arranged on the opposite side of the second exhaust port (102), the damper (2) is located between the electromagnetic lock (6) and the second exhaust port (102), the pin shafts (3) on both sides of the damper (2) are also connected to the main housing (1) via torsion springs (7), the torsion springs (7) include a first torsion arm (701) and a second torsion arm (702), the first torsion arm (701) is fixed to the main housing (1), and the second torsion arm (702) is connected to the pin shaft (3).

4. 3. The heating device according to claim 2, wherein a concave limiting step surface is formed on the inclined plate of the positioning shield member, the limiting step surface conforms to the shape of the damper, and an opening is opened in the limiting step surface.

5. 2. The heating device according to claim 1, wherein a mounting plate (9) is provided at a distance from the bottom of the main housing (1), a bracket (11) is connected between the bottom of the main housing (1) and the mounting plate (9), an inlet of the air source (8) is located at the bottom of the main housing (1), an exhaust passage (10) isolated from the inlet of the air source (8) is formed between the mounting plate (9) and the second exhaust port (102), and an outlet of the exhaust passage (10) is located on the mounting plate (9).

6. 6. The heating device according to claim 5, wherein a grill (12) is provided in the exhaust passage (10).

7. 6. The heating device according to claim 5, wherein the air source (8) is a turbine fan, and the outlet of the air source (8) is located inside the damper (2).

8. 2. The heating device according to claim 1, characterized in that the heating device further comprises a PTC heating module arranged in the first exhaust port (101).

9. 2. The heating device according to claim 1, wherein an exhaust duct (13) is provided outside the outdoor exhaust port.

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