Heating and humidifying device and breathing machine
The heating and humidifying device with detachable connection and foldable design solves the problems of poor portability and complicated operation caused by the fixed connection between the liquid storage tank and the heater, realizes convenient replacement and cleaning, and improves the portability and practicality of the device.
Patent Information
- Application Number
- CN202422502743.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-15
AI Technical Summary
In existing heating and humidifying devices, the liquid storage tank is fixedly connected to or built-in with the heater, resulting in poor portability and increased difficulty in replacing and cleaning the liquid storage tank.
A heating and humidifying device is designed, in which the heater is detachably connected to the liquid storage tank. The liquid storage tank adopts a foldable box structure, and liquid circulation and gas exchange are achieved through detachable joints. The float assembly is used to control the liquid flow and ensure liquid level stability.
The portability and user convenience of the heating and humidifying device are improved. Users can easily replace or clean the liquid storage tank, and the liquid storage tank can be reduced in size when not in use, making it easy to carry and store.
Smart Images
Figure CN223474245U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of human respiratory regulation technology, and in particular to a heating and humidifying device and a ventilator. Background Technology
[0002] Heated humidifiers, also known as heated humidifiers or active heating humidifiers, are mainly used in ventilators, high-flow ventilators, and oxygen concentrators. They primarily heat liquids through physical heating methods. Inhaled dry, cold gas flows through the heated liquid to obtain sufficient humidity and temperature, and then the warm, humidified gas is delivered to the patient to assist in treatment. Existing heated humidifiers typically include a heater and a reservoir. The heater has an inlet and an outlet. The reservoir is fixedly connected to the heater or is located inside the heater. The reservoir stores the liquid to be heated. Dry, cold gas enters the heater through the inlet, absorbs heat and moisture as it flows through the heated liquid, transforming into warm, humid gas, which is finally output to the patient through the outlet.
[0003] In the process of implementing the embodiments of this utility model, the inventors discovered that the current liquid storage tank is fixedly connected to the heater or built into the heater, which not only limits the portability of the heating and humidifying device, but also increases the difficulty for users to replace and clean the liquid storage tank. Utility Model Content
[0004] In view of the above problems, the present invention provides a heating and humidifying device and a ventilator, which overcomes or at least partially solves the above problems.
[0005] To solve the above-mentioned technical problems, the present invention provides a heating and humidifying device, including a heater and a liquid storage tank. The heater includes a housing, a heating component, and a first connector. The housing is provided with a receiving cavity, an air inlet, and an air outlet, both of which are connected to the receiving cavity. The heating component is disposed on the housing. The first connector is disposed on the housing and is connected to the receiving cavity. The liquid storage tank includes a foldable body and a second connector. The foldable body is provided with a liquid storage cavity. The second connector is disposed on the foldable body and is connected to the liquid storage cavity. The liquid storage cavity is used to store liquid. The second connector is used to detachably connect with the first connector. When the second connector and the first connector are connected, the second connector and the first connector form a liquid passage for liquid flow between the liquid storage cavity and the receiving cavity.
[0006] Optionally, the foldable box includes multiple flexible box layers, which are stacked and connected sequentially. Along the stacking direction of the multiple flexible box layers, the foldable box can be contracted and unfolded.
[0007] Optionally, the heater further includes a third connector disposed on the housing, communicating with the receiving cavity, and located above the first connector. The liquid storage tank further includes a fourth connector disposed on the foldable housing, communicating with the liquid storage tank, and located above the second connector. The fourth connector is used for detachable docking with the third connector, and when the second connector and the first connector are docked, the third connector and the fourth connector constitute a gas passage for gas exchange between the liquid storage cavity and the receiving cavity.
[0008] Optionally, the heater includes an inlet pipe and a float assembly. The inlet pipe has a first port and a second port. The first port is connected to the outlet end of the first connector. The float assembly is disposed in the receiving cavity. The float assembly can rise or fall with the liquid level in the receiving cavity. The float assembly is correspondingly disposed to the second port of the inlet pipe. When the liquid in the receiving cavity reaches a preset liquid level, the float assembly closes the second port of the inlet pipe.
[0009] Optionally, the second port of the inlet pipe faces the bottom of the receiving cavity. The float assembly includes a main body and a guide post. One end of the guide post is connected to the main body, and the other end of the guide post is inserted into the second port of the inlet pipe. The guide post can slide along the second port. Along the direction from the other end of the guide post to the first end of the guide post, the cross-sectional area of at least a portion of the guide post gradually increases.
[0010] Optionally, the float assembly further includes a surrounding wall, one end of which is fixed to the main body. The surrounding wall surrounds the guide post, and an annular groove is formed between the surrounding wall and the guide post. The annular groove is used for the insertion of the liquid inlet pipe, and the liquid inlet pipe can slide along the annular groove.
[0011] Optionally, the inlet pipe includes a horizontal pipe and a vertical pipe connected together, the first port is located at the end of the horizontal pipe away from the vertical pipe, the second port is located at the end of the vertical pipe away from the horizontal pipe, the end of the vertical pipe away from the horizontal pipe is inserted into an annular groove, and the vertical pipe is slidable in the annular groove.
[0012] Optionally, the heater further includes a guide sleeve disposed at the bottom of the housing and the receiving cavity, the guide sleeve corresponding to the second port of the liquid inlet pipe, the guide sleeve having a liquid passage hole that connects the inner cavity of the guide sleeve and the receiving cavity, the float assembly being located inside the guide sleeve, and the guide sleeve being used to guide the float assembly toward the second port of the liquid inlet pipe when the liquid level in the receiving cavity rises.
[0013] Optionally, the liquid storage tank further includes a filter screen disposed in the liquid storage cavity and located above the second connector.
[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a ventilator, including the above-mentioned heating and humidifying device.
[0015] The beneficial effects of this utility model embodiment are as follows: Unlike existing technologies, this utility model embodiment provides a heating and humidifying device and a ventilator. The heating and humidifying device includes a heater and a liquid storage tank. The heater includes a housing, a heating component, and a first connector. The housing has a receiving cavity, an air inlet, and an air outlet, both of which communicate with the receiving cavity. The heating component is disposed on the housing. The first connector is disposed on the housing and communicates with the receiving cavity. The liquid storage tank includes a foldable body and a second connector. The foldable body has a liquid storage cavity. The second connector is disposed on the foldable body and communicates with the liquid storage cavity. The liquid storage cavity is used to store liquid. The second connector is detachably connected to the first connector. When the second connector and the first connector are connected, they form a liquid passage for liquid flow between the liquid storage cavity and the receiving cavity. Through this method, the detachable connection between the heater and the liquid storage tank, and the foldable nature of the liquid storage tank, effectively improve the portability of the heating and humidifying device, and make it easier for users to replace and clean the liquid storage tank. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.
[0017] Figure 1 This is a perspective view of the heating and humidifying device provided in the embodiment of this utility model;
[0018] Figure 2 This is a perspective view of the heater provided in an embodiment of the present invention;
[0019] Figure 3 This is a perspective sectional view of the heater provided in this embodiment of the utility model;
[0020] Figure 4 yes Figure 1 Enlarged sectional view of a portion after being cut along section line AA;
[0021] Figure 5 This is an enlarged view of the float assembly provided in this embodiment of the utility model;
[0022] Figure 6 This is a perspective view of the liquid storage tank provided in an embodiment of this utility model. Detailed Implementation
[0023] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.
[0024] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.
[0025] Please see Figure 1 The heating and humidifying device 100 includes a heater 1 and a liquid storage tank 2. The liquid storage tank 2 is detachably connected to the heater 1. The liquid storage tank 2 is used to store liquid. When the liquid storage tank 2 is connected to the heater 1, the liquid in the liquid storage tank 2 is allowed to flow to the heater 1. The heater 1 is used to heat the liquid to generate warm and humid air.
[0026] For heater 1 mentioned above, please refer to Figures 1 to 5The heater 1 includes a housing 11, a heating assembly 14, a first connector 12, a third connector 13, a liquid inlet pipe 15, and a float assembly 16. The housing 11 is provided with a receiving cavity 110, an air inlet 111, and an air outlet 112. Both the air inlet 111 and the air outlet 112 are connected to the receiving cavity 110 and are located at one end of the housing 11. The first connector 12 and the third connector 13 are located at the other end of the housing 11 and are connected to the receiving cavity 110. The third connector 13 is located above the first connector 12 and is used to connect to the gas path of the liquid storage tank 2. The first connector 12 is used to connect to the liquid path of the liquid storage tank 2. A connecting post 113 is provided at the other end of the housing 11 for fixed connection with the liquid storage tank 2. The heating assembly 14 is disposed on the housing 11. Optionally, the heating assembly 14 includes a heating plate 141 and a temperature sensor (not shown). The heating plate 141 is disposed at the bottom of the housing 11 for heating the liquid in the receiving cavity 110. The temperature sensor is used to monitor the temperature near the heating plate 141 or in the liquid in real time to ensure that the heating process is controlled within a safe and efficient range.
[0027] Please see Figure 3 and Figure 4 The inlet pipe 15 includes a horizontal pipe 151 and a vertical pipe 152, which are vertically connected. The inlet pipe 15 has a first port and a second port. The first port is located at the end of the horizontal pipe 151 away from the vertical pipe 152, and the second port is located at the end of the vertical pipe 152 away from the horizontal pipe 151. The first port is connected to the outlet end of the first connector 12. The float assembly 16 is disposed in the receiving cavity 110. The float assembly 16 can rise or fall with the liquid level in the receiving cavity 110. The float assembly 16 is correspondingly disposed to the second port of the inlet pipe 15. When the liquid in the receiving cavity 110 reaches a preset liquid level, the float assembly 16 closes the second port of the inlet pipe 15.
[0028] Please see Figure 5 and Figure 6 The float assembly 16 includes a main body 161, a surrounding wall 162, and a guide post 163. One end of the guide post 163 is connected to the main body 161, and the other end of the guide post 163 is inserted into the second port of the liquid inlet pipe 15. The guide post 163 can slide along the second port. At least a portion of the cross-sectional area of the guide post 163 gradually increases from the other end towards the first end. One end of the surrounding wall 162 is fixed to the main body 161, and the surrounding wall 162 surrounds the guide post 163. An annular groove 160 is formed between the surrounding wall 162 and the guide post 163. The annular groove 160 is used for inserting the end of the vertical tube 152 away from the horizontal tube 151, and the vertical tube 152 can slide along the annular groove 160.
[0029] Understandably, when heater 1 is connected to storage tank 2, the liquid in storage tank 2 can flow into the receiving cavity 110 of heater 1 through the first connector 12. When the liquid in the receiving cavity 110 has not reached the preset liquid level, the other end of the guide post 163 of float assembly 16 is inserted into the second port of inlet pipe 15, but the port is not completely closed, allowing the liquid to flow smoothly. After flowing into the annular groove 160, the liquid overflows into the receiving cavity 110. As the liquid continues to flow in, the liquid level in the receiving cavity 110 gradually rises, and float assembly 16 also rises accordingly. The guide post 163 slides along the second port, and the part of the guide post 163 with the gradually increasing cross-sectional area forms a tighter fit with the second port of inlet pipe 15 until the guide post 163 completely closes the second port, and the liquid cannot flow into the receiving cavity 110. At this time, the liquid in the receiving cavity 110 reaches the preset liquid level.
[0030] During the operation of the heating and humidifying device 100, the heating plate 141 heats the liquid in the receiving cavity 110 to generate steam. The cold air entering from the air inlet 111 of the heater 1 mixes thoroughly with the steam, forming warm and humid air in the receiving cavity 110, which is then discharged through the air outlet 112. During this process, the liquid in the receiving cavity 110 is gradually consumed and reduced, the liquid level drops, the float assembly 16 drops accordingly, and the guide post 163 slides along the second port. When the liquid level drops below the preset liquid level, the float assembly 16 no longer closes the second port, and the liquid in the storage tank 2 flows back into the receiving cavity 110 through the liquid inlet pipe 15 to replenish the consumed liquid, thereby maintaining a stable liquid level in the receiving cavity 110.
[0031] It should be noted that the distance between the main body 161 of the float assembly 16 and the bottom surface of the housing 11 in the receiving cavity 110 is less than the height of the surrounding wall 162 and / or less than the height of the guide post 163. The other end of the guide post 163 protrudes from the annular groove 160, ensuring that the end of the vertical tube 152 away from the horizontal tube 151 remains within the annular groove 160, thus ensuring a reliable fit between the float assembly 16 and the liquid inlet pipe 15. Furthermore, the volume of the main body 161 of the float assembly 16 is greater than the sum of the volumes of the surrounding wall 162 and the guide post 163, giving the float assembly 16 sufficient buoyancy in the liquid, enabling it to float stably and sensitively with changes in liquid level.
[0032] In some embodiments, the heater 1 further includes a guide sleeve (not shown), which is disposed at the bottom of the housing 11 and the receiving cavity 110. The guide sleeve corresponds to the second port of the liquid inlet pipe 15 and has a liquid passage hole that connects the inner cavity of the guide sleeve and the receiving cavity 110. A float assembly 16 is located inside the guide sleeve, which guides the float assembly 16 to move toward the second port of the liquid inlet pipe 15 when the liquid level in the receiving cavity 110 rises. The float assembly 16 may be the structure shown in the example, or it may be other structures, such as only including a float.
[0033] For the above-mentioned liquid storage tank 2, please refer to 4 and Figure 6 The liquid storage tank 2 includes a foldable housing 21, a second connector 22, a fourth connector 23, and a filter screen (not shown). The foldable housing 21 has a liquid storage chamber 210. The second connector 22 and the fourth connector 23 are located within the foldable housing 21 and are connected to the liquid storage chamber 210. The liquid storage chamber 210 stores liquid. The fourth connector 23 is located above the second connector 22. The second connector 22 is detachably connected to the first connector 12, and the fourth connector 23 is detachably connected to the third connector 13. When the liquid storage tank 2 is connected to the heater 1, the second connector 22 is fitted onto the first connector 12, and the fourth connector 23 is fitted onto the third connector 13. The second connector 22 and the first connector 12 form a liquid passage 4 for liquid flow between the liquid storage chamber 210 and the receiving chamber 110. The third connector 13 and the fourth connector 23 form a gas passage 3 for gas exchange between the liquid storage chamber 210 and the receiving chamber 110. The third connector 13 and the fourth connector 23 enable air passage communication between the liquid storage chamber 210 and the receiving chamber 110, maintaining pressure balance between the two chambers and allowing the liquid in the liquid storage chamber 210 to flow smoothly into the receiving chamber 110.
[0034] The foldable housing 21 includes multiple flexible housing layers 211, which are stacked and connected sequentially. Along the stacking direction of the flexible housing layers 211, the foldable housing 21 can be contracted and expanded, making the liquid storage tank 2 occupy little space when stored, facilitating carrying and storage, and allowing for quick expansion when needed. The end of the foldable housing 21 facing the heater 1 is provided with an injection hole 212, a sealing cap 213, and a connecting plate 214. The injection hole 212 communicates with the liquid storage chamber 210 and is located between the fourth connector 23 and the second connector 22. The injection hole 212 is used to replenish liquid in the liquid storage chamber 210, and the sealing cap 213 is used to detachably close the injection hole 212. In some embodiments, the foldable housing 21 has a boss extending from the periphery of the injection hole 212. The boss has external threads, and the sealing cap 213 has internal threads. The sealing cap 213 and the boss are connected by a threaded engagement. The connecting plate 214 is used to allow the connecting column 113 to pass through, and then the connecting plate 214 and the connecting column 113 are fixedly connected by the nut 114 to enhance the connection stability between the liquid storage tank 2 and the heater 1.
[0035] A filter screen is installed in the liquid storage chamber 210, positioned above the second connector 22. This allows the liquid in the storage chamber 210 to pass through the filter screen before flowing out from the second connector 22. The filter screen removes impurities, particulate matter, and any small foreign objects that may be present in the liquid, ensuring that the liquid entering the receiving chamber 110 is clean. The filter screen can be located on the side of the injection hole 212 facing the liquid storage chamber 210, filtering the liquid as it is injected into the storage chamber 210 through the injection hole 212. Optionally, the filter screen has several through holes, the area of which is less than or equal to 0.008 μm². 2 .
[0036] In some embodiments, please refer to Figure 4 The first connector 12 is provided with a first seal 121, and the second connector 22 is provided with a second seal 221 to prevent liquid leakage when the first connector 12 and the second connector 22 are mated. The first seal 121 and the second seal 221 can be rubber sealing rings.
[0037] In some embodiments, please continue reading Figure 4 The second connector 22 is provided with a buffer 222 at one end for docking with the first connector 12. One end of the buffer 222 is open, and the other end of the buffer 222 is bent toward the liquid storage chamber 210. The end face of the other end of the buffer 222 is provided with several liquid passage holes so that when the liquid flows through the docking point of the second connector 22 and the first connector 12, the flow rate can be slowed down, the impact can be reduced, and excessive bubbles or turbulence can be avoided.
[0038] In this embodiment of the invention, the heating and humidifying device 100 is detachably connected to the heater 1 and the liquid storage tank 2, improving the portability of the device and the ease of user operation. Users can easily detach the liquid storage tank 2 from the heater 1 to replace or clean the liquid as needed, without requiring complex operations on the entire device. The liquid storage tank 2 adopts a foldable housing 21, allowing it to shrink to a smaller volume when not in use, making it easy to carry and store. When needed, the user can quickly unfold the liquid storage tank 2 to restore its liquid storage function, further improving the portability and practicality of the device.
[0039] This utility model provides an embodiment of a ventilator, which includes the heating and humidifying device 100 described above. The structure and function of the heating and humidifying device 100 can be found in the above embodiment, and will not be described in detail here.
[0040] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.
Claims
1. A heating and humidifying device, characterized in that, include: A heater includes a housing, a heating assembly, and a first connector. The housing is provided with a receiving cavity, an air inlet, and an air outlet, both of which communicate with the receiving cavity. The heating assembly is disposed in the housing, and the first connector is disposed in the housing and communicates with the receiving cavity. A liquid storage tank includes a foldable housing and a second connector. The foldable housing is provided with a liquid storage cavity. The second connector is disposed in the foldable housing and communicates with the liquid storage cavity. The liquid storage cavity is used to store liquid. The second connector is used to detachably connect with a first connector. When the second connector and the first connector are connected, the second connector and the first connector form a liquid passage for liquid flow between the liquid storage cavity and the receiving cavity.
2. The heating and humidifying device according to claim 1, characterized in that, The foldable box includes multiple flexible box layers, which are stacked and connected in sequence. Along the stacking direction of the multiple flexible box layers, the foldable box can be contracted and unfolded.
3. The heating and humidifying device according to claim 1, characterized in that... , The heater further includes a third connector disposed in the housing, communicating with the receiving cavity, and located above the first connector; The liquid storage tank also includes a fourth connector, which is disposed on the foldable housing and connected to the liquid storage tank. The fourth connector is located above the second connector and is used for detachable docking with the third connector. When the second connector and the first connector are docked, the third connector and the fourth connector constitute a gas passage for gas exchange between the liquid storage chamber and the receiving chamber.
4. The heating and humidifying device according to claim 1, characterized in that... , The heater includes an inlet pipe and a float assembly. The inlet pipe has a first port and a second port, and the first port is connected to the outlet end of the first connector. The float assembly is disposed in the receiving cavity. The float assembly can rise or fall with the liquid level in the receiving cavity. The float assembly is correspondingly disposed with the second port of the liquid inlet pipe. When the liquid in the receiving cavity reaches the preset liquid level, the float assembly closes the second port of the liquid inlet pipe.
5. The heating and humidifying device according to claim 4, characterized in that, The second port of the inlet pipe faces the bottom of the receiving cavity; The float assembly includes a main body and a guide post. One end of the guide post is connected to the main body, and the other end of the guide post is inserted into the second port of the liquid inlet pipe. The guide post can slide along the second port, and the cross-sectional area of at least a portion of the guide post gradually increases from the other end of the guide post to the first end of the guide post.
6. The heating and humidifying device according to claim 5, characterized in that, The float assembly also includes a surrounding wall, one end of which is fixed to the main body. The surrounding wall surrounds the guide post, and an annular groove is formed between the surrounding wall and the guide post. The annular groove is used for the insertion of the liquid inlet pipe, and the liquid inlet pipe can slide along the annular groove.
7. The heating and humidifying device according to claim 6, characterized in that, The inlet pipe includes a horizontal pipe and a vertical pipe connected to each other, the first port is located at the end of the horizontal pipe away from the vertical pipe, and the second port is located at the end of the vertical pipe away from the horizontal pipe; The end of the vertical tube away from the horizontal tube is inserted into the annular groove, and the vertical tube is able to slide in the annular groove.
8. The heating and humidifying device according to claim 4, characterized in that, The heater further includes a guide sleeve disposed at the bottom of the housing and the receiving cavity. The guide sleeve corresponds to the second port of the liquid inlet pipe. The guide sleeve is provided with a liquid passage hole, which connects the inner cavity of the guide sleeve and the receiving cavity. The float assembly is located inside the guide sleeve. The guide sleeve is used to guide the float assembly to move toward the second port of the liquid inlet pipe when the liquid level in the receiving cavity rises.
9. The heating and humidifying device according to any one of claims 1-8, characterized in that, The liquid storage tank also includes a filter screen, which is disposed in the liquid storage cavity and located above the second connector.
10. A ventilator, characterized in that, Includes the heating and humidifying device as described in any one of claims 1-9.