Waterproof volute structure and heater

Abstract

The present invention relates to a waterproof volute structure and a heater, and relates to the technical field of waterproof structures. The waterproof volute structure of the present invention includes a volute unit, the volute unit includes a volute body, and the outer wall of the volute body is provided with a first water retaining rib, the first water retaining rib includes a first water retaining section extending along the side edge of the volute body, and a second water retaining section extending laterally and connected to the first water retaining section, and there is a distance between the vertical plane where the lowest end of the second water retaining section is located and the vertical plane where the bottom end of the volute body is located. It can guide water entering the heater to prevent water from escaping from the bottom end of the volute and contacting live components, thereby creating a safety hazard.

Description

Technical Field

[0001] The present invention relates to the technical field of waterproof structures, and in particular to a waterproof volute structure and a heater. Background Art

[0002] The wall-mounted heaters currently on the market, which can be used both at home and in the bathroom, usually need to be in a humid environment for a long time. However, there is an unavoidable small gap between the upper cover and the rear shell of the heater during assembly, and the surface of the volute of the traditional heater is smooth. When the body is in a humid environment or water enters the machine, water droplets will pass through the gap on the heater and enter the surface of the volute, and flow freely along the smooth surface of the volute. The surface of the volute is arc-shaped. Due to the surface tension of water, water droplets will not actively fall freely in the lower half of the arc, but will slide along the arc to the bottom of the arc. Below the bottom of the volute, there are generally charged components such as temperature limiters. Once the flowing water droplets come into contact with the charged components inside the machine, certain safety hazards will arise. Therefore, there is an urgent need for a volute structure that can resist water droplets flowing to the bottom of the volute near the circuit. Summary of the Invention

[0003] The present invention provides a waterproof volute structure and a heater, which can guide water entering the heater and prevent the water from coming into contact with live components after escaping from the bottom of the volute, thereby preventing potential safety hazards.

[0004] In a first aspect, the present invention provides a waterproof volute structure, including a volute unit, the volute unit including a volute body, the outer wall of the volute body being an inclined water-guiding surface, a first water-retaining rib being provided on the water-guiding surface, the first water-retaining rib including a first water-retaining section extending longitudinally along the side edge of the volute body and a second water-retaining section connected to the bottom end of the first water-retaining section and extending laterally, a vertical plane where the second water-retaining section is located is spaced apart from a vertical plane where the bottom end of the volute body is located.

[0005] In one embodiment, the water guide surface is further provided with a water guide trough unit extending downwardly along the surface thereof, the first water retaining section being located outside the water guide trough unit, and the second water retaining section being located at the lower end of the water guide trough unit. In this embodiment, the provision of the water guide trough unit serves to drain water droplets adhering to the surface of the volute body, ensuring that water droplets adhering to the surface of the volute body can flow along the water guide trough to the second water retaining section.

[0006] In one embodiment, the water diversion trough unit includes a plurality of water diversion troughs arranged in a transverse direction of the volute body, with the spacing between the two outermost water diversion troughs being greater than or equal to 70% and less than or equal to 88% of the transverse length of the volute body. This embodiment limits the maximum width of the water diversion troughs, ensuring that the water diversion troughs can guide the edge of the volute body.

[0007] In one embodiment, the second water retaining section is tilted, and the angle between the second water retaining section and the horizontal plane is 4-7 degrees. Through this embodiment, the water accumulated in the second water retaining section can move laterally along the second water retaining rib, thereby preventing the water from staying in the second water retaining rib for a long time.

[0008] In one embodiment, the outer wall of the volute body is further provided with a third water retaining rib that is lower than the second water retaining section. The third water retaining rib is provided on the volute body at a position farthest from the vertical plane of the bottom end of the volute body. In this embodiment, the third water retaining rib serves to prevent water from flowing down the volute body. When the water rushes down, it is blocked by the third water retaining rib and changes its flow direction, causing it to fall vertically.

[0009] In one embodiment, the device includes a plurality of volute units spaced apart horizontally, with a first guide plate connected between two adjacent volute units, and both ends of the first guide plate tilting downward toward the volute unit. This embodiment prevents water from entering the gap between the two volute units, reducing safety hazards.

[0010] In one embodiment, a positioning plate is further provided between two adjacent volute units, the first guide plate protrusion is provided on the positioning plate, and the first guide plate is inclined upward in a direction away from the positioning plate.

[0011] In one embodiment, the outer wall of the volute body is further provided with a second water retaining rib proximate to the first deflector plate. The second water retaining rib and the first water retaining section form a diversion channel, and a distance is provided between the lowest end of the second water retaining rib and the second water retaining section. With this embodiment, when water on the first deflector plate enters the volute body, the second water retaining rib acts as a limiter to the water flow, preventing the water from overflowing from the sides of the volute body.

[0012] In one embodiment, the upper ends of the two volute units are provided with inclined second guide plates, the inclination direction of the second guide plates being the same as the inclination direction of the volute body. With this embodiment, when water enters the device housing through the gap in the device housing, the second guide plates can serve as a confluence, ensuring that water droplets can flow smoothly through the second guide plates to the volute body for diversion and discharge.

[0013] In one embodiment, a downwardly concave water barrier is provided in the middle of the second guide plate, and the water barrier is located above the first guide plate. Through this embodiment, part of the water flow is accumulated in the water barrier, thereby improving the safety of the equipment.

[0014] In a second aspect, the present invention provides a heater comprising the above-mentioned waterproof volute structure.

[0015] Compared with the prior art, the advantage of the present invention is that, by arranging a first water retaining rib structure on the surface of the volute body, the water flow on the volute body is drained and isolated, so that the water flow on the volute body is guided to both sides, avoiding the safety hazard caused by the shaded pole motor to prevent leakage; the water on the surface of the volute body can be separated from the volute body in the middle of the arc surface, avoiding the safety hazard caused by the contact of the live components after the water is separated from the bottom end of the volute. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, the present invention will be described in more detail based on embodiments with reference to the accompanying drawings.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the length of the two outermost water diversion grooves and the volute body;

[0019] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure;

[0020] Figure 4 yes Figure 3 Schematic cross-sectional view of ;

[0021] Figure 5 yes Figure 1 Schematic side view of

[0022] Figure 6 This is a schematic diagram of the overall heater.

[0023] Reference numerals:

[0024] 10. Volute body; 21. First water retaining section; 22. Second water retaining section; 23. Second water retaining rib; 24. Third water retaining rib; 30. Water diversion trough; 40. First guide plate; 50. Second guide plate; 51. Water-isolating chamber. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Example 1

[0027] The present invention provides a waterproof volute structure, including a volute unit, the volute unit including a volute body 10, the outer wall of the volute body 10 is an inclined water-guiding surface, and a first water-retaining rib is provided on the water-guiding surface. The first water-retaining rib includes a first water-retaining section 21 extending longitudinally along the side edge of the volute body 10 and a second water-retaining section 22 connected to the bottom end of the first water-retaining section 21 and extending laterally. There is a spacing distance between the vertical plane where the second water-retaining section 22 is located and the vertical plane where the bottom end of the volute body 10 is located.

[0028] Specifically, a temperature limiter and other components are generally provided below the volute body 10. Figure 1 and Figure 3 As shown, when the first water retaining section 21 can be a single one, according to the distribution of the entire machine circuit (no circuit on the left side), the surrounding water retaining rib of the left volute adopts a semi-enclosed structure, that is, the left side is open, so that the water flow can rush out along the bottom water retaining rib to the circuit-free part on the left side of the body, thereby avoiding flowing along the volute arc surface to the temperature limiter below, such as the volute body 10 on the left. At this time, the lower end of the first water retaining section 21 is connected to the upper end of the second water retaining end. At this time, the second water retaining section 22 can guide part of the water to the lower end to separate from the volute body 10, and part of it passes over the second water retaining section 22 and directly separates from the volute body 10; the annular water retaining rib of the right volute (the structure formed by the first water retaining section 21 and the second water retaining section 22) adopts a fully enclosed structure. When the water flow gathered below reaches a certain amount, the water flow falls from the bottom end of the water retaining rib. Since the volute space has a depth difference, the water flow will not affect the circuit. When there are two first water retaining sections 21, such as the right side of the volute body 10, the lower ends of the two first water retaining sections 21 are respectively connected to the two ends of the second water retaining section 22. The second water retaining section 22 can also be divided into a plurality of downwardly inclined sections. Figure 5 As shown, through the action of the second water retaining section 22, the water flow directly separates from the volute body 10 from the second water retaining section 22. Compared with the absence of the first water retaining rib, the water flow flows along the surface of the volute body 10 to the lowest end of the volute and then separates from the volute body 10. The distance it has is the depth difference, where the depth difference is the largest as shown in D in the figure.

[0029] In one embodiment, the water guide surface is further provided with a water diversion groove 30 unit extending downwardly along the surface thereof, the first water retaining section 21 being located outside the water diversion groove 30 unit, and the second water retaining section 22 being located at the lower end of the water diversion groove 30 unit. In this embodiment, the provision of the water diversion groove 30 unit serves to drain water droplets attached to the surface of the volute body 10, ensuring that water droplets attached to the surface of the volute body 10 can flow along the water diversion groove 30 to the second water retaining section 22.

[0030] In one embodiment, the water diversion groove 30 unit includes a plurality of water diversion grooves 30 arranged in the transverse direction of the volute body 10, with the spacing between the two outermost water diversion grooves 30 being greater than or equal to 70% and less than or equal to 88% of the transverse length of the volute body 10. In this embodiment, by limiting the maximum width of the water diversion grooves 30, it is ensured that the water diversion grooves 30 can guide the edge portion of the volute body 10.

[0031] Specifically, such as Figure 2 As shown, the distance between the two outermost water diversion grooves 30 is h1, and the length of the single-sided volute body 10 is h2, 70% h2 ≤ h1 ≤ 88% h2, preferably 76% h2, so that the water accumulated in various parts can slide down evenly. In principle, the length of the water diversion groove 30 can ensure that the water can be diverted to the volute arc surface so that it can slide down freely. The addition of the water diversion groove 30 can drain the water accumulated on the top of the shell, and let the accumulated water flow along the direction of the water diversion groove 30 to the water retaining rib at the bottom of the volute, so as to cooperate with the subsequent drainage work of the water retaining rib. Ensure the rationality of the distribution of the two outermost water diversion grooves 30 on the volute body 10. The number of water diversion grooves 30 is preferably 3, and the spacing between the three water diversion grooves 30 is equal. An inclined surface structure inclined along the direction of the water diversion groove 30 can be set on the surface of the volute body 10 to further ensure that the water droplets on the volute body 10 can converge at the water diversion groove 30. The extension direction of the water diversion groove 30 is the same as the inclination direction of the surface of the volute body 10. Preferably, the groove depth of the water diversion groove 30 remains unchanged, and a slope is made at the lowest end of the water diversion groove 30 to ensure that the water inside the water diversion groove 30 can smoothly transition to the surface of the volute body 10.

[0032] In one embodiment, the second water retaining section 22 is tilted, and the angle α between the second water retaining section 22 and the horizontal plane is 4-7°, for example, 4°, 5°, and 7°, with 5° being preferred. Through this embodiment, water accumulated in the second water retaining section 22 can move laterally along the second water retaining rib 23, thereby preventing water from staying in the second water retaining rib 23 for a long time.

[0033] Specifically, the two second water-blocking ends provided on the two volute bodies 10 are inclined in opposite directions, so that water can flow outward under the action of the second water-blocking section 22 .

[0034] In one embodiment, the outer wall of the volute body 10 is further provided with a third water retaining rib 24 that is lower than the second water retaining section 22. The third water retaining rib 24 is provided on the volute body 10 at a position farthest from the vertical plane where the bottom end of the volute body 10 is located (i.e., the depth difference D is the largest). Through this embodiment, the third water retaining rib 24 serves to block the flow of water down the volute body 10. When the water rushes down, it is blocked by the third water retaining rib 24. After changing the flow direction, it will fall vertically from the vertical direction. The third water retaining rib 24 serves as a secondary safety device. The length of the third water retaining rib 24 is guaranteed to be no less than the length of the inclined section of the second water retaining section 22, thereby preventing the hidden danger caused by the malfunction of the second water retaining section 22 when the water flow is too large.

[0035] In one embodiment, the invention includes a plurality of volute units spaced apart horizontally, with a first deflector 40 connected between two adjacent volute units. Both ends of the first deflector 40 are inclined downwardly in a direction approaching the volute units. This embodiment prevents water from entering the gap between the two volute units, reducing safety hazards.

[0036] A positioning plate is further provided between two adjacent volute units, and a first guide plate 40 is protrudingly provided on the positioning plate. The first guide plate 40 is inclined upward in a direction away from the positioning plate.

[0037] Specifically, the structures of the two volute units can be symmetrical structures, and the first water retaining ribs on the two volute bodies 10 can also be as follows: Figure 1 As shown in the settings. Figure 4 As shown, the outer end of the first guide plate 40 is inclined in an upward direction to prevent water falling onto the first guide plate 40 from overflowing from its edge. The first guide plate 40 is high in the middle and low at both ends to ensure that the water flow on the first guide plate 40 can transition along the first guide plate 40 to the volute body 10 on both sides.

[0038] In one embodiment, the outer wall of the volute body 10 is further provided with a second water retaining rib 23 near the first guide plate 40. The second water retaining rib 23 and the first water retaining section 21 form a diversion channel, and a distance is provided between the lowest end of the second water retaining rib 23 and the second water retaining section 22. In this embodiment, when water on the first guide plate 40 enters the volute body 10, the second water retaining rib 23 acts as a limiter to the water flow, preventing the water from overflowing from the sides of the volute body 10.

[0039] Specifically, the second water retaining rib 23 can be located outside the water diversion groove 30, that is, there is no water diversion groove 30 structure in the diversion channel. Similarly, the second water retaining rib 23 can also be located inside the outermost water diversion groove 30, that is, at this time, there is a water diversion groove 30 structure in the diversion channel. Figure 1 As shown, the second water retaining ribs 23 on the two volute bodies 10 are located on the inner side.

[0040] In one embodiment, the upper ends of the two volute units are provided with inclined second deflectors 50, which are tilted in the same direction as the volute body 10. With this embodiment, when water enters the device housing through the gap in the housing, the second deflectors 50 act as a confluence, ensuring that water droplets flow smoothly through the second deflectors 50 to the volute body 10 for drainage, thus ensuring that the shaded-pole motor remains dry.

[0041] Specifically, the transverse length of the second deflector 50 is greater than the outermost distance between the two volute bodies 10, ensuring that the second deflector 50 can accumulate water above the volute body 10. When the upper cover and rear shell of the heater are installed, the gap formed by the upper cover and rear shell is located at the upper end of the second deflector 50. In other words, when water enters the heater through the gap between the upper cover and rear shell, it will first come into contact with the second deflector 50, thus guiding and accumulating water entering the heater.

[0042] In one embodiment, a downwardly concave water barrier 51 is provided in the middle of the second guide plate 50, and the water barrier 51 is located above the first guide plate 40. Through this embodiment, part of the water flow is accumulated in the water barrier 51, improving the safety of the equipment.

[0043] Specifically, the second guide plate 50 may be provided with an inclined surface inclined toward the water barrier 51, so that a certain amount of water can be accumulated in the water barrier 51. Furthermore, a drain pipe may be provided in communication with the side wall of the water barrier 51 to promptly drain the water accumulated in the water barrier 51. Specifically, when the water flow entering the heater is small, the water flow can be accumulated in the water barrier 51 and discharged from the water barrier 51 through the drain pipe. When the water flow is too large, the water flow can overflow from the upper end of the water barrier 51 and transfer to the first guide plate 40 for diversion.

[0044] In a humid environment, due to the unavoidable tiny gap between the upper cover and the rear shell of the heater during assembly, a small amount of water will flow into the body along the gap. Experimental results show that the middle of the body is the concentrated water inlet area, and the amount of water inflow on both sides is relatively small. Therefore, according to the shape of the rear shell, the volute body 10 is matched with it, and a water barrier 51 is formed in the middle of the second guide plate 50. The second guide plate 50 is extended downward. At this time, the second guide plate 50 will interfere with the rear shell, so that the middle part of the second guide plate 50 and the rear shell are slightly overfitted (the purpose is to press the two tightly to prevent water leakage). At this time, a sealed water barrier 51 is formed between the rear shell and the water barrier 51. When there is water in the middle, water droplets will first fall into the water barrier 51, and avoid flowing to the shaded pole motor.

[0045] It's important to note that the heater's rear housing and volute body 10 have an inclined diversion structure installed where they meet, allowing water flowing into the heater to flow smoothly into the water channel 30. This diversion structure also extends slightly outward, allowing the lower volute and rear housing to be aligned below the diversion structure, providing a double layer of waterproofing for the entire unit. Furthermore, the upper housing is designed with a smooth, curved surface, allowing for rapid drainage of large volumes of water, significantly reducing water ingress into the unit.

[0046] Example 2

[0047] like Figure 6 As shown, the present invention proposes a heater, including the above-mentioned waterproof volute structure, thereby having all the technical effects thereof. The heater includes at least an upper cover and a rear shell, and other conventional components not mentioned can be replaced by existing technologies.

[0048] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A waterproof volute structure, characterized in that: It includes a volute unit, which includes a volute body. The outer wall of the volute body is an inclined water-guiding surface. A first water-retaining rib is provided on the water-guiding surface. The first water-retaining rib includes a first water-retaining section extending longitudinally along the side edge of the volute body and a second water-retaining section connected to the bottom end of the first water-retaining section and extending laterally. There is a spacing distance between the vertical plane where the second water-retaining section is located and the vertical plane where the bottom end of the volute body is located. The second water-retaining section is higher than the farthest position of the vertical plane where the bottom end of the volute body is located.

2. The waterproof volute structure according to claim 1, characterized in that: The water guide surface is further provided with a water diversion trough unit extending downward along the surface thereof, the first water retaining section is located outside the water diversion trough unit, and the second water retaining section is located at the lower end of the water diversion trough unit.

3. The waterproof volute structure according to claim 2, characterized in that: The water inlet trough unit includes a plurality of water inlet troughs arranged along the transverse direction of the volute body, and the distance between the two outermost water inlet troughs is greater than or equal to 70% of the transverse length of the volute body and less than or equal to 88% of the transverse length of the volute body.

4. The waterproof volute structure according to claim 1, characterized in that: The second water retaining section is inclined, and the angle between the second water retaining section and the horizontal plane is 4° to 7°.

5. The waterproof volute structure according to claim 1, characterized in that: The outer wall of the volute body is further provided with a third water retaining rib lower than the second water retaining section. The third water retaining rib is provided on the volute body at a position farthest from the vertical plane where the bottom end of the volute body is located.

6. The waterproof volute structure according to any one of claims 1 to 5, characterized in that: It comprises a plurality of volute units spaced apart in a horizontal direction, a first guide plate is connected between two adjacent volute units, and both ends of the first guide plate are inclined downward in a direction close to the volute unit.

7. The waterproof volute structure according to claim 6, characterized in that: A positioning plate is further provided between two adjacent volute units, the first guide plate protrusion is provided on the positioning plate, and the first guide plate is inclined upward in a direction away from the positioning plate.

8. The waterproof volute structure according to claim 6, characterized in that: The outer wall of the volute body is further provided with a second water retaining rib close to the first guide plate. The second water retaining rib and the first water retaining section form a guide channel. There is a distance between the lowest end of the second water retaining rib and the second water retaining section.

9. The waterproof volute structure according to claim 6, characterized in that: The upper ends of the two volute units are provided with inclined second guide plates, and the inclined direction of the second guide plates is the same as the inclined direction of the volute body.

10. The waterproof volute structure according to claim 9, characterized in that: A downwardly concave water barrier is provided in the middle of the second guide plate, and the water barrier is located above the first guide plate.

11. A fan heater, characterized in that: It comprises the waterproof volute structure as described in any one of claims 1-10.

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