Pump-free water circulation mechanism and humidifier

Abstract

The utility model relates to a pump-free water circulation mechanism and a humidifier, the pump-free water circulation mechanism comprises a water tank, a sealing cavity, a breather valve and a heating pipe, the bottom surface of the water tank is provided with a water inlet and a water outlet, and the water inlet is communicated with the sealing cavity; the breather valve is arranged at the top of the sealing cavity and used for selectively communicating or cutting off communication between the sealing cavity and the external space according to the pressure in the sealing cavity. According to the pump-free water circulation mechanism and the humidifier, the sealing cavity is formed by the first cover body and the second cover body which are detachably arranged outside the water tank, the first cover body is pressed and fixed through the second cover body, the structure is simple, the sealing performance is good, the problem that complex waterproof sealing is conducted in the water tank through a traditional structure is solved, and the water circulation efficiency is improved. And potential water leakage hidden danger points are greatly reduced.

Description

TECHNICAL FIELD

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

[0002] Humidifier is an important equipment for adjusting indoor humidity, and has been widely used in family and office. The traditional humidifier design usually relies on water pump to realize water circulation, that is, water is extracted from water tank and transported to evaporator or wet curtain through pipeline, and air is driven to flow through wet curtain by fan to increase humidity in air. However, these humidifier designs relying on water pump have some significant defects.

[0003] Firstly, submersible pump needs to be completely immersed in water to work, which not only limits its installation position, but also brings inconvenience to users when cleaning water tank due to the existence of wire connection. In addition, maintenance and replacement of submersible pump are relatively complex, which increases the use cost of users.

[0004] Secondly, wireless power supply submersible pump solves the problem of wire connection, but its cost is high, which further increases the economic burden of users and reduces the competitiveness of products.

[0005] Furthermore, although diaphragm self-priming pump can provide certain water circulation power, it has large noise and is easy to be blocked by impurities in waterway, resulting in equipment failure. These shortcomings limit the application of diaphragm self-priming pump in humidifier.

[0006] The existing pumpless water structure, although the structure for facilitating cleaning inside related cavity is designed, the internal structure of water tank is not simple and beautiful enough, and it has the risk of water leakage, and cannot balance maintenance and sealing performance. INVENTION CONTENTS

[0007] In order to solve the above problems, the utility model provides a pumpless water circulation mechanism and humidifier which reduces the risk of water leakage by external cover.

[0008] In order to achieve the above object, in a first aspect, the embodiments of the present application provide a pump-free water circulation mechanism, comprising a water tank, a sealed cavity, 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 water inlet is communicated with the sealed cavity; the breathing valve is arranged at the top of the sealed cavity and is used for selectively communicating or cutting off the communication between the sealed cavity and the outside space according to the pressure in the sealed cavity; one end of the heating pipe is connected with the sealed cavity and the other end is connected with the water outlet; the bottom surface of the water tank is recessed inward to form a groove, and a first cover is arranged at the opening of the groove; a second cover is detachably mounted on the bottom surface of the water tank, and the opening of the second cover is sealingly matched with the bottom surface of the water tank; the first cover is tightly fixed at the opening of the groove by the second cover, and the first cover cooperates with the groove to form a valve cavity of the breathing valve, and the bottom surface of the water tank, the first cover and the second cover jointly enclose the sealed cavity.

[0009] Preferably, the bottom surface of the water tank is provided with an annular sealing groove, the annular sealing groove is arranged at intervals with the opening edge of the groove to form a positioning surface; the second cover is provided with a pressing edge opposite to the positioning surface, and the circumferential edge of the first cover is tightly fixed between the positioning surface and the pressing edge.

[0010] Preferably, a first annular sealing member is arranged in the annular sealing groove, and the opening edge of the second cover is provided with a first annular protrusion in contact with the first annular sealing member.

[0011] Preferably, a second annular sealing member is arranged on the positioning surface, and a second annular protrusion in contact with the second annular sealing member is arranged on the side of the first cover facing the positioning surface.

[0012] Preferably, a third annular protrusion adapted to the groove is arranged on the side of the first cover facing the groove, and the third annular protrusion at least partially extends into the groove and is in contact with the groove wall.

[0013] Preferably, a one-way valve is inserted into the water outlet, and the one-way valve is located in the water tank.

[0014] Preferably, the breathing valve comprises a valve rod and a valve sheet fixedly installed on the valve rod, the valve sheet is made of flexible material; a first through hole is formed in the first cover, and a second through hole is formed in the groove bottom, the first through hole communicates the sealed cavity and the valve cavity, and the second through hole communicates the valve cavity and the water tank; the valve rod is slidably arranged in the first through hole and the second through hole at both ends.

[0015] Preferably, the water inlet is provided with a water inlet valve, the water inlet valve is provided with a baffle at the valve port in the sealed cavity, and the baffle is configured to float upwards with the increase of the air pressure in the sealed cavity to close the valve port of the water inlet valve.

[0016] Preferably, the bottom surface of the water tank is detachably provided with a third cover body, the third cover body is provided with a buffer cavity in sealing cooperation with the opening of the bottom surface of the water tank, and one end of the heating pipe is connected to the second cover body and the other end of the heating pipe is connected to the third cover body in a downward inclined manner.

[0017] In a second aspect, the embodiments of the present application provide a humidifier comprising the pump-free water circulation mechanism according to any one of the embodiments of the first aspect.

[0018] The pump-free water circulation mechanism and the humidifier designed by the present application not only completely get rid of the dependence of the traditional humidifier on the water pump, but also significantly reduce the production cost, energy consumption and operating noise. The upper cavity wall of the breathing valve is formed by the groove, the upper cavity wall of the breathing valve is integrally formed with the water tank, and the lower cavity wall is formed by the first cover body. When maintenance or cleaning is performed, the first cover body can be detached, the user cannot see the cooperation and connection between the breathing valve and the water tank from the inside of the water tank, and the inside of the water tank is simple and beautiful as a whole. Maintenance personnel can conveniently maintain and clean the breathing valve and the sealed cavity. Meanwhile, the sealed cavity is formed by the detachable first cover body and the second cover body arranged outside the water tank, and the first cover body is pressed and fixed by the second cover body. The structure is simple and has good sealing performance. Not only is the problem of complex waterproof sealing in the water tank of the traditional structure avoided, but also the potential water leakage risk point is greatly reduced. In addition, even if a small amount of water vapor enters from the gap between the water tank and the second cover body, it only enters the sealed cavity, which effectively reduces the risk of water leakage and ensures the stable operation of the water circulation system. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the pump-free water circulation mechanism provided by the embodiments of the present application;

[0020] Figure 2 is Figure 1 a top view of the breathing valve;

[0021] Figure 3 is Figure 2 a sectional view of A-A in the breathing valve;

[0022] Figure 4 is Figure 2 a sectional view of B-B in the breathing valve;

[0023] Figure 5 is Figure 4 an enlarged schematic view of C in the breathing valve;

[0024] Figure 6is a schematic diagram of a ventilation groove structure provided by the embodiment of the present application.

[0025] Wherein: the water tank 10, the water inlet 11, the water outlet 12, the groove 13, the sealing cavity 20, the breathing valve 30, the valve cavity 30a, the valve rod 31, the valve piece 32, the first through hole 33, the second through hole 34, the heating pipe 40, the first cover 50, the second annular protrusion 51, the third annular protrusion 52, the second cover 60, the pressing solid edge 61, the first annular protrusion 62, the annular sealing groove 70, the positioning surface 71, the first annular sealing member 72, the second annular sealing member 73, the water inlet valve 80, the blocking piece 81, the third cover 90, the buffer cavity 91. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present application are described below in conjunction with 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.

[0027] As Figures 1 to 5 shown, in the first aspect, the embodiment of the present application provides a pump-free water circulation mechanism, comprising a water tank 10, a sealing cavity 20, a breathing valve 30 and a heating pipe 40, the water tank 10 is provided with a water inlet 11 and a water outlet 12 at the bottom surface, the water inlet 11 is communicated with the sealing cavity 20; the breathing valve 30 is arranged at the top of the sealing cavity 20, and is used for selectively communicating or cutting off the communication between the sealing cavity 20 and the external space according to the pressure in the sealing cavity 20, so as to maintain water circulation; one end of the heating pipe 40 is connected with the sealing cavity 20, and the other end is connected with the water outlet 12, so that the water in the heating pipe 40 is heated and evaporated to drive water circulation.

[0028] In the specific implementation, the pump-free water circulation mechanism of the humidifier provided by the embodiment is arranged at the bottom of the humidifier, the water inlet 11 is provided with a water inlet valve 80, the water inlet valve 80 is arranged at the valve port in the sealing cavity 20 and is provided with a blocking piece 81, the blocking piece 81 is configured to float upwards with the increase of the air pressure in the sealing cavity 20, so as to close the valve port of the water inlet valve 80, in use, as Figure 1 、 Figure 3 、 Figure 4As shown, the water tank 10 is filled with water to a certain level, and the water enters the sealed cavity 20 through the backwater port 11. The heating pipe 40 connects the sealed cavity 20 with the water outlet 12. When the heating pipe 40 is powered to heat, the temperature of the water in the sealed cavity 20 rises, and the steam is generated with the rising temperature, so that the steam pressure in the sealed cavity 20 gradually increases. When the air pressure in the sealed cavity 20 reaches a certain threshold, the baffle 81 floats up to close the valve port of the water inlet valve 80, preventing more water from flowing into the sealed cavity 20. At the same time, the breathing valve 30 closes the communication between the valve cavity 30a of the breathing valve 30 and the outside space with the increasing air pressure in the sealed cavity 20, preventing the steam from escaping, so that the water in the sealed cavity 20 and the heating pipe 40 flows to the water outlet 12 under the action of the increasing steam pressure, and is finally discharged through the water outlet 12. With the decrease of the water level in the sealed cavity 20, the space containing steam at the top of the sealed cavity 20 gradually increases, and the pressure in the sealed cavity 20 gradually decreases. The baffle 81 loses the pressure drop to release the sealing cooperation with the valve port of the water inlet valve 80, allowing new water to flow into the sealed cavity 20. At the same time, the breathing valve 30 restores the communication with the outside space with the decreasing air pressure in the sealed cavity 20, preparing for the next cycle. In this way, the pump-free water circulation is realized, and the water pump is not needed, which can provide a more quiet and comfortable environment for the user. Meanwhile, the pump-free design simplifies the structure of the humidifier, making it easier to clean the water tank 10 and improving the user's convenience.

[0029] The bottom surface of the water tank 10 is recessed inward to form a groove 13, and the first cover body 50 is arranged at the opening of the groove 13. The first cover body 50 is detachably and sealingly connected with the groove 13 by a sealing ring or other sealing means, so as to effectively prevent the steam from escaping from the groove 13, i.e. the valve cavity 30a of the breathing valve 30, thereby ensuring the working stability of the breathing valve 30. Meanwhile, the bottom surface of the water tank 10 is detachably installed with the second cover body 60 by screws or other means. The edge of the second cover body 60 is sealingly connected with the bottom surface of the water tank 10 by a sealing ring or other sealing structure, so that the second cover body 60, the bottom surface of the water tank 10 and the first cover body 50 form a closed space, and further form the sealed cavity 20. The cross-sectional area of the second cover body 60 is larger than that of the first cover body 50. That is, the upper part of the cavity wall of the breathing valve 30 and the water tank 10 are integrally formed, and the lower part of the cavity wall is formed by the first cover body 50. During maintenance or cleaning, the first cover body 50 can be detached, and the user cannot see the connecting part between the breathing valve 30 and the water tank 10 from the inside of the water tank 10, so that the inside of the water tank 10 is simple and beautiful in whole. Maintenance personnel can also conveniently maintain and clean the breathing valve 30 and the sealed cavity 20.

[0030] In this way, the first cover 50 is pressed and fixed to the opening of the groove 13 by the second cover 60. This not only achieves a stable fixation of the first cover 50, but also makes the bottom surface of the first cover 50 and the groove wall of the groove 13 together form the valve chamber 30a of the breather valve 30. This simplifies the structural design of the breather valve 30 and reduces the number of parts. In this way, the valve body of the breather valve 30 is integrally formed with the bottom of the water tank 10, which not only reduces potential leakage points, but also makes the internal structure of the water tank 10 more concise and aesthetically pleasing. At the same time, since both the first cover 50 and the second cover 60 are located outside the water tank 10, there is no need for complex sealing treatment inside the water tank 10, which greatly reduces the risk of leakage caused by poor internal sealing. In addition, by pressing and fixing the first cover 50 with the second cover 60, even if a small amount of water vapor enters from the gap between the water tank 10 and the second cover 60, it only enters the sealing cavity 20, effectively reducing the overall risk of leakage and ensuring the stability and reliability of the water circulation system.

[0031] In one example, the upper chamber of the breather valve is detachably connected to the water tank, allowing users or maintenance personnel to remove it from inside the tank for component replacement or cleaning. While this design allows direct disassembly of the breather valve from the tank, users are often unfamiliar with the equipment's structure and operating principles, rarely performing maintenance or cleaning on the tank components themselves. This requires professional maintenance personnel. The detachable installation method is less user-friendly, as it results in very infrequent use, affecting the simplicity and aesthetics of the tank's internal structure and creating gaps that could lead to leaks. In contrast, the pumpless water circulation mechanism provided in this embodiment features an integrated structure where the upper chamber of the breather valve and the water tank are seamlessly connected. The covers can be removed from the bottom of the tank for maintenance, resulting in a clean and aesthetically pleasing internal structure that balances maintenance and sealing performance.

[0032] In some embodiments, such as Figure 3 , Figure 4 As shown, the bottom surface of the water tank 10 is provided with an annular sealing groove 70. The annular sealing groove 70 increases the length of the sealing path, requiring water vapor to travel a longer path before escaping, thereby improving the sealing effect. The annular sealing groove 70 and the opening edge of the groove 13 are spaced apart to form a positioning surface 71. The second cover 60 is provided with a pressing edge 61 opposite to the positioning surface 71. The circumferential edge of the first cover 50 is pressed and fixed between the positioning surface 71 and the pressing edge 61. The positioning surface 71 provides a precise installation position for the second cover 60, ensuring a precise sealing fit between the first cover 50 and the groove 13. Simultaneously, the pressing edge 61 forms a stable pressing structure with the positioning surface 71, reliably pressing and fixing the first cover 50, thus ensuring the long-term effectiveness of the seal.

[0033] In some embodiments, as shown in Figure 6 A first annular seal 72 is arranged in the annular sealing groove 70, and the opening edge of the second cover 60 is provided with a first annular protrusion 62 in contact with the first annular seal 72. A second annular seal 73 is arranged on the positioning surface 71, and the side of the first cover 50 facing the positioning surface 71 is provided with a second annular protrusion 51 in contact with the second annular seal 73. The cooperation of the first annular seal 72 and the first annular protrusion 62, and the cooperation of the second annular seal 73 and the second annular protrusion 51 enable the seal to better fit the sealing surface and provide a more reliable sealing effect.

[0034] In some embodiments, as shown in Figure 6 The first cover 50 is provided with a third annular protrusion 52 on the side facing the groove 13, which is adapted to the groove 13. When the first cover 50 is tightly fixed by the second cover 60 at the opening of the groove 13, the third annular protrusion 52 at least partially extends into the groove 13 and contacts the groove wall of the groove 13. When the first cover 50 is tightly fixed by the second cover 60, the third annular protrusion 52 extends into the groove 13 and contacts the groove wall of the groove 13, forming an additional seal, i.e. effectively increasing the length of the sealing path, so that the water vapor or liquid needs to pass through more sealing points before leaking, further reducing the risk of leakage, and the third annular protrusion 52 can play a self-alignment role, guiding the first cover 50 to be accurately installed into the groove 13 during assembly.

[0035] In some embodiments, a one-way valve is inserted at the water outlet 12, and the one-way valve is located in the water tank 10. The one-way valve allows water to flow out of the water outlet 12 in one direction, while preventing water from flowing into the water outlet 12 in the opposite direction, avoiding the efficiency loss and unintended instability caused by backflow. At the same time, the one-way valve is installed in the water tank 10 in a plug-in manner, which can facilitate maintenance.

[0036] In some embodiments, as shown in Figure 5 , Figure 6As shown, the breathing valve 30 comprises a valve stem 31 and a valve flap 32 fixedly mounted on the valve stem 31, the valve flap 32 is made of flexible material, and the circumferential edge of the valve flap 32 extends horizontally and outwardly and gradually decreases in thickness, so that the valve flap 32 can flexibly respond to the pressure change in the sealed cavity 20, and can also significantly reduce the noise generated by the valve flap 32 hitting the first cover 50 or the recess 13 during opening and closing; the first cover 50 is provided with a first through hole 33, and the bottom of the recess 13 is provided with a second through hole 34, the first through hole 33 communicates the sealed cavity 20 and the valve cavity 30a, and the second through hole 34 communicates the valve cavity 30a and the water tank 10; the valve stem 31 is slidably arranged in the first through hole 33 and the second through hole 34 at both ends. The outer side wall of the valve stem 31 is provided with at least one air passage (not shown) communicating the first through hole 33 and the second through hole 34, so as to form an air passage communicating the valve cavity 30a, and ensure that the pressure in the sealed cavity 20 can act on the valve flap 32, and the gas in the valve cavity 30a can be smoothly discharged.

[0037] In some embodiments, as Figure 4 As shown, the bottom surface of the water tank 10 is detachably provided with a third cover 90, the opening of the third cover 90 is sealingly matched with the bottom surface of the water tank 10 to form a buffer cavity 91, one end of the heating pipe 40 is connected to the second cover 60, and the other end is downwardly and obliquely connected to the third cover 90, and the water outlet 12 communicates with the buffer cavity 91. When the heating pipe 40 stops heating, the existence of the buffer cavity 91 can slow down the speed of water backflow, avoid the water hammer effect caused by the sudden stop of water flow, thereby reducing the noise generated by water flow impact, and make the humidifier run more quietly. In addition, the end of the heating pipe 40 connected to the third cover 90, i.e. the buffer cavity 91, is downwardly and obliquely arranged, which makes the steam bubbles generated by the heating of water in the heating pipe 40 enter the sealed cavity 20 due to the inclination of the heating pipe 40, and finally enter, and further ensure the smoothness of water circulation.

[0038] In the second aspect, the embodiments of the present application provide a humidifier comprising the pump-free water circulation mechanism of any one of the first aspect. Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-mentioned humidifier can refer to the corresponding process in the foregoing pump-free water circulation mechanism embodiments, which will not be described here.

[0039] The pump-free water circulation mechanism and the humidifier provided by the embodiment not only completely get rid of the dependence of the traditional humidifier on the water pump, but also significantly reduce the production cost, energy consumption and operation noise; the upper cavity wall of the breathing valve is formed by the groove, the upper cavity wall of the breathing valve is integrally formed with the water tank, the lower cavity wall is formed by the first cover body, the first cover body can be disassembled during maintenance or cleaning, the user cannot see the matching connection between the breathing valve and the water tank from inside the water tank, the inside of the water tank is simple and beautiful as a whole; the maintenance personnel can conveniently maintain and clean the breathing valve and the sealed cavity; meanwhile, the sealed cavity is formed by the first cover body and the second cover body which are arranged outside the water tank and can be disassembled, and the first cover body is pressed and fixed by the second cover body, the structure is simple and the sealing performance is good, the problems of complicated waterproof sealing in the water tank of the traditional structure are avoided, and the potential water leakage hidden danger points are greatly reduced. In addition, even if a small amount of water vapor enters from the gap between the water tank and the second cover body, it only enters the sealed cavity, which effectively reduces the risk of water leakage and ensures the stable operation of the water circulation system.

[0040] In the description of the utility model, it needs to be explained that, the terms "vertical", "upper", "lower", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0041] In the description of the utility model, it also needs to be explained that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, 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 it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] Finally, it should be pointed out that: the above-mentioned is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pumpless water circulation mechanism comprising a water tank, a sealed cavity, a breather valve and a heating tube, the water tank is provided with a water inlet and a water outlet at the bottom surface, the water inlet is communicated with the sealed cavity; the breather valve is arranged at the top of the sealed cavity, and is used for selectively communicating or cutting off the communication between the sealed cavity and the external space according to the pressure in the sealed cavity; one end of the heating tube is connected with the sealed cavity, and the other end is connected with the water outlet, characterized in that, The bottom surface of the water tank is recessed inward to form a groove, and a first cover is arranged at the opening of the groove; the bottom surface of the water tank is detachably mounted with a second cover, and the opening of the second cover is in sealing cooperation with the bottom surface of the water tank; the first cover is tightly fixed at the opening of the groove by the second cover, and the first cover cooperates with the groove to form a valve cavity of the breathing valve, and the bottom surface of the water tank, the first cover and the second cover jointly enclose the sealing cavity.

2. The pumpless water circulation mechanism according to claim 1, characterized by The bottom surface of the water tank is provided with an annular sealing groove, and the annular sealing groove is arranged at the opening edge of the groove to form a positioning surface; the second cover is provided with a pressing edge opposite to the positioning surface, and the circumferential edge of the first cover is tightly fixed between the positioning surface and the pressing edge.

3. A pump-less water circulating mechanism according to claim 2, wherein A first annular sealing member is arranged in the annular sealing groove, and the opening edge of the second cover is provided with a first annular protrusion in contact with the first annular sealing member.

4. The pumpless water circulation mechanism according to claim 2, wherein A second annular sealing member is arranged on the positioning surface, and the side of the first cover facing the positioning surface is provided with a second annular protrusion in contact with the second annular sealing member.

5. A pumpless water circulating mechanism according to claim 1 or 2 or 3, characterized in that, The side of the first cover facing the groove is provided with a third annular protrusion matched with the groove, and the third annular protrusion at least partially extends into the groove and contacts the groove wall.

6. The pumpless water circulation mechanism according to claim 1, wherein A one-way valve is inserted into the water outlet, and the one-way valve is located in the water tank.

7. The pumpless water circulation mechanism according to claim 1, wherein The breathing valve comprises a valve rod and a valve plate fixedly installed on the valve rod, and the valve plate is made of flexible material; a first through hole is formed in the first cover, and a second through hole is formed in the groove bottom, the first through hole communicates the sealing cavity and the valve cavity, and the second through hole communicates the valve cavity and the water tank; the valve rod is slidably arranged in the first through hole and the second through hole at both ends.

8. The pumpless water circulation mechanism according to claim 1, wherein An inlet valve is arranged in the water inlet, and a baffle is arranged at the valve port in the sealing cavity, and the baffle is configured to float upward with the increase of the air pressure in the sealing cavity to close the valve port of the inlet valve.

9. The pumpless water circulation mechanism according to claim 1, wherein The bottom surface of the water tank is detachably mounted with a third cover, and the opening of the third cover is in sealing cooperation with the bottom surface of the water tank to form a buffer cavity, one end of the heating pipe is connected to the second cover, and the other end is connected to the third cover downwardly, and the water outlet is in communication with the buffer cavity.

10. A humidifier characterised in that, The pump-free water circulation mechanism comprises the breathing valve. The pump-free water circulation mechanism comprises the breathing valve.

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