Breathing valve, pumpless water circulation mechanism and humidifier

Abstract

The breather valve comprises a valve rod, a valve block fixed on the valve rod and a valve cavity for containing the valve block, a first through hole is formed in the cavity bottom wall of the valve cavity, a second through hole is formed in the cavity top wall of the valve cavity, the two ends of the valve rod penetrate through the first through hole and the second through hole in a sliding mode respectively, and the valve block is made of flexible materials. According to the breather valve, the pumpless water circulation mechanism and the humidifier, due to the fact that the flexible valve plate is adopted, noise generated in the opening and closing process of the valve plate is greatly reduced, and the overall sealing performance is improved; and by means of the optimized valve rod ventilation structure, the ventilation efficiency is remarkably improved, the manufacturing cost is reduced, the operation reliability and stability of the system are effectively improved, and the quiet, efficient and durable use experience is brought to users.

Description

TECHNICAL FIELD

[0001] The utility model relates to humidifier technical field especially is a kind of breathing valve, pumpless water circulation mechanism and humidifier. BACKGROUND

[0002] In prior art, breathing valve as a kind of common fluid control element, is widely used in various fields, and its core function is to balance the pressure difference between container inside and outside, to prevent container from being damaged due to excessive pressure or too low pressure. In humidifier, breathing valve is mainly used to balance the pressure of humidifier internal sealed cavity, to ensure the normal and stable operation of water circulation system.

[0003] However, the structure of the widely used breathing valve still has some deficiencies. The valve plate of the previous breathing valve is mostly made of hard material (such as plastic), and relies on spring or its own gravity to realize the opening and closing control of the valve plate. Although this structure has the advantage of simple structure, its inherent defects are also obvious: first, the hard valve plate is easy to collide with the valve cavity or other parts during opening and closing, producing a lot of noise, which seriously affects the user's experience, second, the deformation ability of the hard valve plate is poor, and it is difficult to form a tight seal with the valve cavity, which is easy to cause leakage and reduce the overall performance of the system.

[0004] In addition, in order to realize the circulation of air, the traditional breathing valve usually adopts a simple one-way ventilation structure, such as directly opening a ventilation hole on the valve cavity. Although this structure has the advantage of simple structure, due to the limited ventilation area of the ventilation hole, the ventilation efficiency is low, and in the case of high flow ventilation, it is difficult to meet the system requirements, and in order to improve the sealing performance, a more complex sealing structure needs to be set at the ventilation hole, which undoubtedly makes the overall structure complex and increases the processing and manufacturing cost. UTILITY MODEL CONTENTS

[0005] In order to solve the above problems, the utility model provides a breathing valve, pumpless water circulation mechanism and humidifier, which greatly reduces the noise generated during the opening and closing of the valve plate.

[0006] In order to achieve the above purpose, in the first aspect, the application embodiment provides a breathing valve applied to pumpless water circulation mechanism, which comprises a valve rod, a valve plate fixed on the valve rod and a valve cavity accommodating the valve plate, the cavity bottom wall of the valve cavity is provided with a first through hole, and the cavity top wall is provided with a second through hole, the two ends of the valve rod are respectively slidably provided through the first through hole and the second through hole, and the valve plate is made of flexible material.

[0007] Preferably, the valve plate is a silica gel piece or a rubber piece.

[0008] Preferably, the thickness of the valve plate gradually decreases from the center to the periphery, and the upper surface and the lower surface of the valve plate are both convex arcs.

[0009] Preferably, the outer side wall of the valve rod is vertically provided with at least one air passage.

[0010] Preferably, the air passage is a plurality of air passages, and the plurality of air passages are arranged in a ring shape and spaced apart in a ring direction on the outer side wall of the valve rod.

[0011] Preferably, the top of the valve cavity is provided with an annular protrusion, and the annular protrusion is arranged in a ring shape around the second through hole and used for sealing contact with the valve plate.

[0012] Preferably, the valve rod is radially provided with a fixing ring, the valve plate is axially provided with a mounting hole in the center, the fixing ring is embedded in the hole wall of the mounting hole, and the valve plate is fixed to the valve rod through the fixing ring.

[0013] Preferably, the cavity bottom wall and / or the cavity top wall of the valve cavity are provided with a plurality of limiting protrusions in a ring direction.

[0014] In a second aspect, the embodiments of the present application provide a pump-free water circulation mechanism, which comprises a water tank, a sealed chamber, a breathing valve and a heating pipe, the bottom surface of the water tank is provided with a water inlet and a water outlet, the sealed chamber is a hollow structure arranged at the bottom of the water tank, and the water inlet is in communication with the sealed chamber; the breathing valve is arranged at the top of the sealed chamber and is used for communicating or cutting off the communication between the sealed chamber and the external space; one end of the heating pipe is connected to the sealed chamber, the other end of the heating pipe is connected to the water outlet, and the end of the heating pipe connected to the water outlet is arranged in a downward inclined manner; and the breathing valve is the breathing valve of any one of the first aspect.

[0015] In a third aspect, the embodiments of the present application provide a humidifier, which comprises the pump-free water circulation mechanism of any one of the second aspect.

[0016] The breathing valve, the pump-free water circulation mechanism and the humidifier are designed, the flexible valve plate is adopted, the noise generated in the opening and closing process of the valve plate is greatly reduced, the overall sealing performance is improved, the optimized valve rod air passage structure significantly improves the air passage efficiency, reduces the manufacturing cost, effectively improves the operation reliability and stability of the system, and brings a more quiet, efficient and durable use experience to the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of a breathing valve structure provided by the embodiments of the present application.

[0018] Figure 2 is a schematic diagram of an air passage structure provided by the embodiments of the present application.

[0019] Figure 3is a structure schematic diagram of a pump-free water circulation mechanism provided by the embodiment of the present application.

[0020] Figure 4 is Figure 3 is a sectional view at A-A in the figure.

[0021] Figure 5 is Figure 3 is a sectional view at B-B in the figure.

[0022] Wherein: the valve piece 10, the valve rod 20, the valve cavity 30, the first through hole 31, the second through hole 32, the annular protrusion 33, the limiting protrusion 34, the fixed ring 22, the water tank 40, the water inlet 41, the water outlet 42, the sealing chamber 50, the heating pipe 60. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0024] In the first aspect, the embodiment of the present application provides a breathing valve applied to a pump-free water circulation mechanism, which aims to effectively reduce the operation noise of the pump-free water circulation mechanism, improve the sealing performance, and improve the ventilation efficiency through specific structural design. The structure related to the pump-free water circulation mechanism will be described later.

[0025] As shown in Figure 1 , Figure 2 , the breathing valve mainly includes a valve piece 10, a valve rod 20, and a valve cavity 30.

[0026] The valve piece 10 is made of a flexible material, such as a silica gel piece or a rubber piece, the edge of the valve piece 10 extends outward, and the thickness gradually decreases along the extension direction of itself, that is, the thickness of the valve piece 10 gradually decreases from the center to the periphery. This structural design not only has good sealing performance and responsiveness, but also can significantly reduce the impact noise generated by the valve piece 10 in the opening and closing process. In addition, the design of gradually reducing the edge thickness can also effectively reduce the retention of water vapor on the valve piece 10, thereby reducing the risk of valve piece 10 sticking caused by water vapor condensation.

[0027] In the embodiment, as shown in Figure 1 , Figure 2 , the upper surface and the lower surface of the valve piece 10 are both convex arc surfaces. When the valve piece 10 is sealed, the convex arc surface can form better fitting with the valve seat, thereby further reducing the possibility of leakage.

[0028] The valve stem 20 is used to install the valve plate 10, the valve cavity 30 includes a first through hole 31 arranged on the cavity bottom wall and a second through hole 32 arranged on the cavity top wall, the second through hole 32 is located directly above the first through hole 31, the first through hole 31 and the second through hole 32 are coaxially arranged, the two ends of the valve stem 20 are respectively arranged in the first through hole 31 and the second through hole 32, the valve stem 20 is slidably assembled in the valve cavity 30, the valve stem 20 is in clearance fit with the hole walls of the two through holes, forming an axial guiding structure, which ensures the stable movement of the valve stem 20. At least one air passage (not shown in the figure) can be arranged on the outer side wall of the valve stem 20, the air passage communicates the first through hole 31 and the second through hole 32 to form an air passage communicating with the valve cavity 30, the arrangement of the air passage can increase the air passage area between the valve stem and the corresponding through hole wall, and the air passage can allow the external gas to enter or exit the valve cavity 30 through the first through hole 31 and the second through hole 32. In the embodiment, the air passage can be arranged in multiple, and the multiple air passages are equidistantly and annularly arranged on the outer side wall of the valve stem 20 to further improve the air passage efficiency.

[0029] In some embodiments, as shown in Figure 1 , the top of the valve cavity 30 is provided with an annular protrusion 33, the annular protrusion 33 is annularly arranged on the second through hole 32, and is used for sealing contact with the valve plate 10. The annular protrusion 33 can provide a clear sealing contact surface, which can form a close fit with the valve plate 10 when the valve plate 10 is in action, thereby effectively improving the sealing performance and reducing the possibility of leakage.

[0030] In some embodiments, as shown in Figure 1 , Figure 2 , the valve stem 20 is radially provided with a fixing ring 22, the valve plate 10 is axially provided with a mounting hole, and the fixing ring 22 is embedded in the hole wall of the mounting hole. The valve plate 10 is fixed to the valve stem 20 through the fixing ring 22, and the connection is tighter and more reliable.

[0031] In some embodiments, the cavity bottom wall and / or the cavity top wall of the valve cavity 30 is annularly and spacedly provided with a plurality of limiting protrusions 34. As shown in Figure 1 , the cavity bottom wall of the valve cavity 30 is provided with a plurality of limiting protrusions 34, the limiting protrusions 34 separate the valve plate 10 from the bottom surface of the valve cavity 30 by a certain distance, so as to avoid that the valve plate 10 is sucked to the area where the bottom surface of the valve cavity 30 is located due to the change of air pressure, thereby blocking the channel of the first through hole 31 communicating with the external space. In an embodiment, the cavity top wall of the valve cavity 30 is also annularly and spacedly provided with a plurality of limiting protrusions (not shown in the figure), and the arrangement of the limiting protrusions can avoid that the valve plate 10 is adsorbed and adhered to the cavity wall of the valve cavity 30 due to the surface tension of water.

[0032] In a second aspect, the embodiments of the present application provide a pump-free water circulation mechanism, as shown in Figure 3 , Figure 4 , Figure 5As shown, the pump-free water circulation mechanism comprises a water tank 40, a sealed chamber 50, a breathing valve and a heating tube 60.

[0033] The breathing valve is the breathing valve of any one of the embodiments of the first aspect. The water tank 40 is provided with a water inlet 41 and a water outlet 42, the sealed chamber 50 is a hollow structure arranged at the bottom of the water tank 40, the water inlet 41 is in communication with the sealed chamber 50, the breathing valve 10 is arranged at the top of the sealed chamber 50 and is used to communicate or cut off the communication between the sealed chamber 50 and the external space, one end of the heating tube 60 is connected to the sealed chamber 50 and the other end is connected to the water outlet 42, and the end of the heating tube 60 connected to the water outlet 42 is arranged in a downward inclined manner.

[0034] In operation, as shown, Figure 4 Figure 5 The water tank 40 has a certain water level, water enters the sealed chamber 50 through the water inlet 41, the heating tube 60 communicates the sealed chamber 50 with the water outlet 42, and the water outlet 42 is connected to a water supply pipe (not shown in the figure) to form a water supply path. When the heating tube 60 is powered and heated, the water temperature in the sealed chamber 50 rises, and steam is generated as the water temperature rises. This causes the vapor pressure in the sealed chamber 50 to gradually increase. When the air pressure in the sealed chamber 50 reaches a certain threshold, the water inlet 41 can be closed by a valve to prevent more water from flowing into the sealed chamber 50 through the water inlet 41. At the same time, the valve cavity 30 is in communication with the sealed chamber 50 through the first through hole 31, and the valve piece 10 in the valve cavity 30 also floats and seals with the annular protrusion 33 as the air pressure in the sealed chamber 50 increases, eventually closing the communication between the valve cavity 30 and the external space, preventing the steam in the sealed chamber 50 from escaping, and forcing the water in the sealed chamber 50 and the heating tube 60 to flow to the water outlet 42 under the action of the increasing steam pressure, and eventually being discharged through the water supply pipe for use in the humidifier. Because the end of the heating tube 60 connected to the water outlet 42 is arranged in a downward inclined manner, the steam bubbles generated by the heating of the water flow in the heating tube 60 will enter the sealed chamber 50 due to the inclination of the heating tube 60, and eventually enter the breathing valve located at the top of the sealed chamber 50 to eliminate the steam bubbles and avoid the noise caused by excessive bubbles. Then, as the water level in the sealed chamber 50 decreases, the space in the sealed chamber 50 for containing steam also gradually increases, and the pressure in the sealed chamber 50 gradually decreases. The water inlet 41 can be opened by a valve to allow new water to flow into the sealed chamber 50, and at the same time, the valve rod 10 and the valve piece 10 are lowered to restore the communication between the sealed chamber 50 and the external space, preparing for the next cycle. The above working process is continuously repeated to achieve the pump-free water circulation of the pump-free water circulation mechanism.

[0035] ​In a third aspect, the embodiments of the present application provide a humidifier comprising the pump-free water circulation mechanism of any of the embodiments of the second aspect.

[0036] The breathing valve, the pump-free water circulation mechanism and the humidifier provided by the embodiments reduce the noise generated in the opening and closing process of the flexible valve plate, improve the overall sealing performance, optimize the valve rod ventilation structure, significantly improve the ventilation efficiency, reduce the manufacturing cost, effectively improve the operation reliability and stability of the system, and bring a quieter, more efficient and more durable use experience to the user.

[0037] In the description of the present application, it should be pointed out that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A breather valve for use in a pumpless water circulation mechanism, characterized by, The valve includes a valve stem, a valve plate fixed on the valve stem, and a valve cavity accommodating the valve plate, a first through hole is formed in a cavity bottom wall of the valve cavity, a second through hole is formed in a cavity top wall of the valve cavity, both ends of the valve stem are slidably arranged through the first through hole and the second through hole respectively, and the valve plate is made of flexible material.

2. The breather valve of claim 1, wherein, The valve plate is a silica gel piece or a rubber piece.

3. The breather valve of claim 1, wherein, The thickness of the valve plate gradually decreases from the center to the periphery, and the upper surface and the lower surface of the valve plate are both convex arc surfaces.

4. The breather valve of claim 1, wherein, At least one air passage is vertically formed in the outer side wall of the valve stem.

5. The breather valve of claim 4, wherein, The air passages are multiple, and the multiple air passages are arranged in a ring shape and spaced apart in a ring direction on the outer side wall of the valve stem.

6. The breather valve of claim 1, wherein, A ring-shaped protrusion is arranged on the top of the valve cavity, the ring-shaped protrusion is arranged in a ring shape around the second through hole, and the ring-shaped protrusion is used for sealing contact with the valve plate.

7. The respiratory valve of claim 1, wherein, A fixing ring is radially arranged on the valve stem, an installation hole is axially formed in the center of the valve plate, the fixing ring is embedded in the hole wall of the installation hole, and the valve plate is fixed on the valve stem through the fixing ring.

8. The respiratory valve of claim 1, wherein, Limiting protrusions are arranged in a ring shape and spaced apart on the cavity bottom wall and / or the cavity top wall of the valve cavity.

9. A pumpless water circulation mechanism characterized by comprising: The water tank, the sealing chamber, the breathing valve, and the heating pipe are provided, the bottom surface of the water tank is provided with a water inlet and a water outlet, the sealing chamber is a hollow structure arranged at the bottom of the water tank, the water inlet is communicated with the sealing chamber, the breathing valve is arranged at the top of the sealing chamber and is used for communicating or cutting off the communication between the sealing chamber and the external space, one end of the heating pipe is connected with the sealing chamber, the other end of the heating pipe is connected with the water outlet, and the end of the heating pipe connected with the water outlet is arranged in a downward inclined manner, and the breathing valve is the breathing valve in any one of claims 1-8.

10. A humidifier characterised in that, The pump-free water circulation mechanism in claim 9 is provided. The pump-free water circulation mechanism in claim 9 is provided.

Images