Humidifying tank

Abstract

The utility model belongs to the technical field of air humidifying equipment, and particularly relates to a humidifying tank which comprises a tank body, and a buoy, a column valve and a lever which are arranged in the tank body, and the tank body is provided with a water inlet and an air outlet; the middle part of the lever is provided with a fulcrum rotationally connected to the tank body; the lever is divided into a power section and a resistance section by the fulcrum; the buoy and the power section are rotationally connected to a first point, the column valve and the resistance section are rotationally connected to a second point, and the distance between the first point and the fulcrum is larger than that between the second point and the fulcrum. When the buoy descends along with the liquid level, the column valve moves upwards, and when the buoy ascends along with the liquid level, the column valve moves downwards; when the buoy is located below the preset height, the column valve opens the water inlet; when the buoy ascends to a preset height, the column valve closes the water inlet. According to the humidifying tank disclosed by the embodiment of the utility model, the vertical moving force of the buoy is amplified by utilizing the lever principle, when the liquid level fluctuates, the buoy drives the lever to rotate, and the force of the lever is amplified and transmitted to the column valve, so that the column valve is driven to move more easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of air humidification equipment, in particular to a humidification tank. Background Art

[0002] A medical respiratory humidifier is an important medical device connected between a ventilator and a patient. Its function is to heat and humidify the inhaled gas, prevent secondary infection of the patient's respiratory tract, reduce stimulation to the cardiopulmonary system, and keep the alveoli moist.

[0003] The principle of automatic water addition in the humidifier is similar to that of the float valve. The automatic water addition process is as follows: the float inside the humidifier floats upward as the liquid level rises, and the upward float drives the plug to block the water inlet; the float floats downward as the liquid level drops, and the downward float drives the plug to gradually separate from the water inlet.

[0004] When the liquid level of the existing humidifier fluctuates slightly, the buoyancy of the float does not change much and may not move the plug. Only when the liquid level fluctuates significantly will the plug move with the float, causing a lag in the movement of the plug, which can easily lead to the phenomenon of too high or too low liquid level in the humidifier. Utility Model Content

[0005] The technical problem to be solved by the utility model is that when the liquid level of the existing humidifier does not fluctuate much, the buoyancy it receives does not change much and may not be able to move the plug, resulting in a hysteresis problem in the movement of the plug. A humidification tank is provided.

[0006] In order to solve the above technical problems, the embodiment of the utility model provides a humidification tank, comprising a tank body, and a float, a column valve and a lever arranged in the tank body, wherein the tank body is provided with a water inlet and an air outlet;

[0007] The middle part of the lever has a fulcrum rotatably connected to the tank body, and the lever is divided into a power section and a resistance section by the fulcrum;

[0008] The float is rotationally connected to the power section at a first point, and the column valve is rotationally connected to the resistance section at a second point, and the distance between the first point and the fulcrum is greater than the distance between the second point and the fulcrum; when the float decreases with the liquid level, the column valve moves upward, and when the float rises with the liquid level, the column valve moves downward; when the float is below a preset height, the column valve opens the water inlet; when the float rises to a preset height, the column valve closes the water inlet.

[0009] Optionally, the first point is an end point of the power section away from the fulcrum, and the second point is an end point of the resistance section away from the fulcrum.

[0010] Optionally, the humidification tank further comprises a bracket fixed on the inner wall of the tank body, the lever is rotatably connected to the bracket, and the connection point between the lever and the bracket is the fulcrum of the lever.

[0011] Optionally, the water inlet is arranged at the top of the tank body, and the water inlet is provided with a joint protruding outward, the joint is tubular, and the joint is used for connecting a water bottle or a water bag;

[0012] The column valve comprises a plug and a sealing block, wherein the plug is rod-shaped, the outer diameter of the plug is smaller than the inner diameter of the joint, the plug is inserted into the joint, the bottom end of the plug is used to rotatably connect the resistance section so that the plug can be lifted up and down in the joint, and the sealing block is fixed on the top end of the plug;

[0013] When the resistance section moves upward, the sealing block gradually moves away from the water inlet;

[0014] When the resistance section moves downward, the sealing block gradually approaches until the water inlet is closed.

[0015] Optionally, the inner wall of the joint is bent toward the center of the joint to form an inclined annular surface, so that the inner diameter of one end of the joint close to the inner cavity of the tank body gradually decreases;

[0016] The sealing block is in a truncated cone shape, with the small end of the sealing block arranged downward, and the small end surface of the sealing block can fit the inclined annular surface to close the water inlet.

[0017] Optionally, a guide groove is provided in the tank body, the guide groove extends in a vertical direction, and the guide groove is connected to the water inlet;

[0018] The column valve also includes a guide column, which can slide in the guide groove, and the inner wall of the guide groove and the outer surface of the guide column are spaced apart; the bottom end of the guide column is rotatably connected to the resistance section, and the top end of the guide column is connected to the bottom end of the plug.

[0019] Optionally, a prefabricated column is provided in the tank body, the prefabricated column is provided on the top wall of the tank body, the guide groove vertically penetrates the prefabricated column to communicate with the water inlet, and the guide column is slidably connected to the prefabricated column.

[0020] Optionally, a plurality of guide bars are fixed in the guide groove, and the plurality of guide bars are arranged at intervals around the water inlet, and a surface of one side of the guide bar away from an inner wall of the guide groove abuts against the guide column.

[0021] Optionally, the tank body comprises a heat-conducting bottom surface and an upper shell, the upper shell and the heat-conducting bottom surface are connected to form the tank body, and the heat-conducting bottom surface is made of metal.

[0022] Optionally, a cavity or a groove is provided in the guide column.

[0023] According to the humidification tank of the embodiment of the utility model, when the liquid level rises and falls, the float drives the lever to rotate. Since the power section is greater than the resistance section, the force applied by the float to the lever is amplified and transmitted to the column valve, thereby driving the column valve to move up and down more easily. The lever principle is used to amplify the force of the float moving up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the humidification tank provided by the first embodiment of the utility model;

[0025] Figure 2 It is a half-section schematic diagram of the humidification tank provided by the first embodiment of the utility model;

[0026] Figure 3 It is a structural schematic diagram of a lever of a humidification tank provided in the first embodiment of the utility model;

[0027] Figure 4 It is a schematic diagram of the distribution of guide strips in the guide groove of the humidification tank provided in the first embodiment of the utility model.

[0028] The reference numerals in the specification are as follows:

[0029] 1. Tank body; 11. Upper shell; 12. Heat-conducting bottom surface; 13. Water inlet; 14. Air outlet; 15. Joint; 151. Inclined annular surface; 16. Bracket; 17. Guide groove; 18. Guide strip; 2. Float; 3. Lever; 31. Rod body; 32. Support rod; 4. Column valve; 41. Guide column; 42. Plug; 43. Sealing block; 5. Prefabricated column. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] First embodiment

[0032] like Figure 1 and Figure 2As shown, the humidification tank provided by the first embodiment of the utility model includes a tank body 1, the tank body 1 is provided with a water inlet 13 and an air outlet 14, and also includes a float 2, a column valve 4 and a lever 3 arranged in the tank body 1. The middle part of the lever has a fulcrum rotatably connected to the tank body, and the fulcrum divides the lever 3 into a power section and a resistance section. The float is rotatably connected to the power section at a first point, and the column valve is rotatably connected to the resistance section at a second point, and the distance between the first point and the fulcrum is greater than the distance between the second point and the fulcrum. More specifically, the first point is the end point of the power section of the lever away from the fulcrum, and the second point is the end point of the other end of the resistance section of the lever away from the fulcrum, that is, the float is rotatably connected to the end of the power section away from the fulcrum, and the column valve is rotatably connected to the end of the resistance section away from the fulcrum, so that the power arm of the lever is greater than the resistance arm. The column valve 4 is used to block or disengage from the water inlet 13.

[0033] The working process is as follows: when the float 2 drops with the liquid level, it exerts downward force on the power section of the lever 3, and the resistance section of the lever 3 moves upward, driving the column valve 4 to move upward, so as to open the water inlet 13;

[0034] On the contrary, when the float 2 rises with the liquid level, it applies force upward to the power section of the lever 3, and the column valve 4 moves downward to close the water inlet 13.

[0035] When the liquid level rises or falls, the float 2 drives the lever 3 to rotate. Since the power arm is greater than the resistance arm, the force applied by the float 2 to the lever 3 is amplified and transmitted to the column valve 4, thereby driving the column valve 4 to move up and down more easily. The lever 3 principle is used to amplify the force of the float 2 moving up and down. Therefore, when the liquid level in this embodiment changes slightly, the buoyancy of the float 2 is amplified, which can drive the column valve 4 to move up and down more easily, reducing the hysteresis of the column valve 4.

[0036] In this embodiment, the humidification tank further includes a bracket 16, the bracket 16 is fixed on the inner wall of the tank body 1, the lever 3 is rotatably connected to the bracket 16, and the connection point between the lever 3 and the bracket 16 is the fulcrum of the lever 3. In this embodiment, the bracket 16 is fixed on the top wall of the tank body 1, and in other embodiments, the bracket 16 is fixed on other inner walls of the tank body 1, as long as the rotation of the lever 3 can be achieved.

[0037] The lever 3 in this embodiment is formed by two parallel rods 31 and two parallel supporting rods 32, the two ends of the supporting rods 32 are respectively fixed on the two parallel rods 31, the two supporting rods 32 are arranged in the middle of the rods 31, the ends of the two rods 31 are respectively provided with circular holes, the float 2 and the column valve 4 are provided with rotating shafts, the float 2 and the lever 3 are rotatably connected through the circular holes and the rotating shafts, and the same is true for the column valve 4. The middle of the rod 31 is also provided with a circular hole, and the bracket 16 is provided with a rotating shaft, and the bracket 16 and the rod 31 are also rotatably connected through the circular hole in the middle of the rod 31 and the rotating shaft on the bracket 16.

[0038] In other embodiments, the lever 3 may simply be formed by one rod.

[0039] In this embodiment, the water inlet 13 is arranged at the top of the tank body 1, and two air outlets 14 are provided. The two air outlets 14 are also arranged at the top of the tank body 1. The water inlet 13 is installed with a joint 15, and the joint 15 is tubular. The joint 15 is used for connecting to a water bottle or a water bag, and the joint 15 can be plugged into a water bag or a water bottle.

[0040] The column valve 4 includes a guide column and a plug 42. A closed ring is provided at the top of the guide column, and the closed ring protrudes from the surface of the guide column. The plug 42 is rod-shaped, and the outer diameter of the plug 42 is smaller than the smallest inner diameter of the joint 15. The plug 42 is inserted into the joint 15, and one end of the plug 42 is connected to the guide column.

[0041] The resistance section moves upward, driving the sealing block 43 to move upward until it is at the farthest position away from the water inlet 13. At this time, the water flows into the tank body 1 from the gap between the plug 42 and the joint 15.

[0042] The resistance section moves downward, driving the sealing block 43 to approach the water inlet 13 until the sealing block 43 closes the water inlet 13 .

[0043] In this embodiment, when the liquid level rises, the float 2 moves upward, and after the lever 3 rotates, the plug 42 moves downward. When the guide column moves to its lowest point, the sealing block 43 closes the water inlet 13, that is, closes the joint 15, and water no longer enters the tank body 1. When the liquid level of the tank body 1 drops, the float 2 moves downward, the guide column and the plug 42 move upward, and the sealing block 43 is separated from the joint 15. At this time, water flows into the tank body 1 from the gap between the plug 42 and the inner wall of the joint 15.

[0044] In this embodiment, the inner wall of the joint 15 is bent toward the center of the joint 15 to form an inclined annular surface 151, so that the inner diameter of the end of the joint 15 close to the inner cavity of the tank body 1 gradually decreases; a sealing block 43 is fixed to the other end of the plug 42, and the small end of the sealing block 43 faces the guide column. The small end surface of the sealing block 43 can fit the inclined annular surface 151 to close the water inlet 13.

[0045] In this embodiment, the inclined annular surface 151 and the truncated cone-shaped surface of the sealing block 43 are used to form a sealing surface to block water from entering the tank body 1. In other embodiments, the top of the plug 42 passes through the joint 15, and the sealing block 43 is in a square shape. When the plug 42 moves downward with the guide column until the bottom surface of the sealing block 43 directly blocks the end surface of the joint 15, the joint 15 can be closed and the water inlet 13 can be blocked.

[0046] In this embodiment, a guide groove 17 is provided in the tank body 1, the guide groove 17 is connected to the water inlet 13, the guide post is slidably connected to the guide groove 17, and the inner wall of the guide groove 17 and the outer surface of the guide post are arranged at intervals. In this embodiment, the guide groove 17 is in the shape of a circular hole, and the guide post includes three coaxial cylinders, which are arranged from top to bottom in order of increasing diameter from small to large, and a closed ring is provided on the top surface of the smallest cylinder. The outer diameter of the largest cylinder is smaller than the inner diameter of the guide groove 17, and at this time, water can flow into the tank body 1 from the interval between the guide groove 17 and the guide post. The diameters of the three cylinders increase from top to bottom, so that the space at the top is larger than the space at the bottom, which facilitates the rapid entry of water into the guide groove 17.

[0047] In actual production, the guide groove 17 is generally not provided on the wall surface of the tank body 1. Instead, a prefabricated column 5 is provided inside the tank body 1. The prefabricated column 5 is provided on the top wall of the tank body 1. The guide groove 17 vertically penetrates the prefabricated column 5 to connect to the water inlet 13. The guide column is slidably connected to the prefabricated column 5. The prefabricated column 5 and the tank body 1 are integrally formed.

[0048] In this embodiment, a plurality of guide strips 18 are fixed in the guide groove 17, and the plurality of guide strips 18 are arranged at intervals around the water inlet 13, and the surface of the guide strip 18 on one side away from the inner wall of the guide groove 17 abuts against the guide post. In this embodiment, the cross section of the guide strip 18 is fan-shaped, the arc surface of the guide strip 18 fits the inner wall of the guide groove 17, and the tip of the guide strip 18 fits the surface of the guide post. Specifically, the tip of the guide strip 18 fits the cylinder with the largest outer diameter. Moreover, the plurality of guide strips 18 are spaced apart from each other, and the function of the guide strip 18 is to prevent the guide post from shaking randomly in the guide groove 17.

[0049] In this embodiment, the tank body 1 includes a heat-conducting bottom surface 12 and an upper shell 11. The upper shell 11 and the heat-conducting bottom surface 12 are connected to form the tank body 1. The heat-conducting bottom surface 12 is made of metal, and the upper shell 11 is made of plastic. The two are ultrasonically welded. The heat-conducting bottom surface 12 of the metal material contacts the heat source to heat the water in the tank body 1. The heated water vaporizes and flows into the ventilator from the air outlet 14. The prefabricated column 5 and the upper shell 11 are integrally formed.

[0050] In this embodiment, the float 2 is hollow to facilitate buoyancy. A cavity or groove is provided in the guide column. The cavity or groove in the guide column is used to reduce the weight of the guide column. Otherwise, the guide column is too heavy and the float 2 used therewith is larger in volume. Otherwise, the float 2 cannot easily drive the guide column to move up and down.

[0051] Second embodiment

[0052] The humidification tank of the second embodiment of the utility model is different from the first embodiment in that, in the present embodiment, the guide column is cylindrical, and the end faces of both ends of the guide column are the same, and the regular cylindrical guide column is easy to obtain.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A humidification tank, characterized in that: It comprises a tank body, and a float, a column valve and a lever arranged in the tank body, wherein the tank body is provided with a water inlet and an air outlet; The middle part of the lever has a fulcrum rotatably connected to the tank body, and the lever is divided into a power section and a resistance section by the fulcrum; The float is rotationally connected to the power section at a first point, and the column valve is rotationally connected to the resistance section at a second point, and the distance between the first point and the fulcrum is greater than the distance between the second point and the fulcrum; when the float decreases with the liquid level, the column valve moves upward, and when the float rises with the liquid level, the column valve moves downward; when the float is below a preset height, the column valve opens the water inlet; when the float rises to a preset height, the column valve closes the water inlet.

2. The humidification tank according to claim 1, characterized in that: The first point is an end point of the power section away from the fulcrum, and the second point is an end point of the resistance section away from the fulcrum.

3. The humidification tank according to claim 1, characterized in that: The humidification tank also includes a bracket fixed on the inner wall of the tank body, the lever is rotatably connected to the bracket, and the connection point between the lever and the bracket is the fulcrum of the lever.

4. The humidification tank according to claim 1, characterized in that: The water inlet is arranged at the top of the tank body, and the water inlet is provided with a joint protruding outward, the joint is tubular, and the joint is used for connecting a water bottle or a water bag; The column valve comprises a plug and a sealing block, wherein the plug is rod-shaped, the outer diameter of the plug is smaller than the inner diameter of the joint, the plug is inserted into the joint, the bottom end of the plug is used to rotatably connect the resistance section so that the plug can be lifted up and down in the joint, and the sealing block is fixed on the top end of the plug; When the resistance section moves upward, the sealing block gradually moves away from the water inlet; When the resistance section moves downward, the sealing block gradually approaches until the water inlet is closed.

5. The humidification tank according to claim 4, characterized in that: The inner wall of the joint is bent toward the center of the joint to form an inclined annular surface, so that the inner diameter of one end of the joint close to the inner cavity of the tank body gradually decreases; The sealing block is in a truncated cone shape, with the small end of the sealing block arranged downward, and the small end surface of the sealing block can fit the inclined annular surface to close the water inlet.

6. The humidification tank according to claim 4, characterized in that: A guide groove is provided in the tank body, the guide groove extends in a vertical direction, and the guide groove is connected to the water inlet; The column valve also includes a guide column, which can slide in the guide groove, and the inner wall of the guide groove and the outer surface of the guide column are spaced apart; the bottom end of the guide column is rotatably connected to the resistance section, and the top end of the guide column is connected to the bottom end of the plug.

7. The humidification tank according to claim 6, characterized in that: A prefabricated column is arranged in the tank body, the prefabricated column is arranged on the top wall of the tank body, the guide groove vertically penetrates the prefabricated column to communicate with the water inlet, and the guide column is slidably connected to the prefabricated column.

8. The humidification tank according to claim 6, characterized in that: A plurality of guide bars are fixed in the guide groove, and the plurality of guide bars are arranged at intervals around the water inlet, and a surface of one side of the guide bar away from the inner wall of the guide groove abuts against the guide column.

9. The humidification tank according to claim 1, characterized in that: The can body comprises a heat-conducting bottom surface and an upper shell body, and the upper shell body and the heat-conducting bottom surface are connected to form the can body.

10. The humidification tank according to claim 6, characterized in that: A cavity or a groove is arranged in the guide column.

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