Humidification control structure of sleep breathing machine

Abstract

The utility model provides a sleep breathing machine humidification control structure, relates to humidifier technical field, including shell, heating piece, circuit board, humidity sensor, shell one end is equipped with the water absorption part, shell other end is equipped with the connecting groove that is used for connecting breathing pipeline, water absorption part extends into the connecting groove, heating piece is fixedly connected on the one end of water absorption part, and the circuit board is equipped with the humidity sensor. The humidity sensor is located in the connecting groove, and the circuit board is fixedly connected into the shell and electrically connected with the heating piece and the humidity sensor. The humidification control structure of the sleep breathing machine can effectively and accurately control the humidity of the airflow in the breathing pipeline, and improves the comfort when a user uses the breathing machine.

Description

Technical Field

[0001] This utility model relates to the field of humidifier technology, and in particular to a humidification control structure for a sleep apnea machine. Background Technology

[0002] With the increasing advancement of modern medicine, sleep medicine, as an important component of modern medicine, has gradually been established and developed. Research on sleep breathing is directly related to the research on sleep disorders, thus sleep breathing has become a major concern in sleep medicine. Currently, sleep apnea-hypopnea syndrome is relatively common in the adult population. Its clinical characteristics include recurrent episodes of severe snoring and apnea. In addition to causing or aggravating respiratory failure, it is also one of the important risk factors for cerebrovascular accidents, myocardial infarction, and hypertension. In addition to drug treatment, current medical technology commonly uses medical devices such as sleep apnea machines to treat and improve the condition. When using a sleep apnea machine, because the instrument ventilates the patient's body for a long time, it is necessary to maintain the relative humidity of the air entering the patient's body at 50%%RH-85%%RH. How to humidify the ventilator gas and achieve precise control according to the patient's humidity requirements has become a technical challenge in the industry.

[0003] The humidification scheme used in most sleep apnea machines on the market is based on water tank heating and humidification, and its control method is open-loop control. This type of control scheme is easily affected by the usage environment or other factors, and has certain shortcomings in terms of accuracy and reliability. Because the humidification module adopts an open-loop control scheme, it cannot feed back the actual air humidity in the air circuit to the control center, so it cannot make precise control of the humidification amount; and there is no air humidity detection module in the air circuit, so it is impossible to know the specific humidity value in the air circuit.

[0004] Therefore, it is necessary to propose a humidification control structure for sleep apnea machines to precisely control the humidity of airflow in the breathing duct. Utility Model Content

[0005] To address the aforementioned issues, this invention proposes a humidification control structure for a sleep apnea machine to precisely control the humidity of the airflow within the breathing duct.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a humidification control structure for a sleep apnea machine, including a housing, a heating element, a circuit board, and a humidity sensor. One end of the housing is provided with a water-absorbing part, and the other end of the housing is provided with a connecting groove for connecting a breathing tube. The water-absorbing part extends into the connecting groove. The heating element is fixedly connected to one end of the water-absorbing part. The humidity sensor is located in the connecting groove. The circuit board is fixedly connected to the housing and electrically connected to the heating element and the humidity sensor respectively.

[0008] Furthermore, the absorbent part includes a plug shell and absorbent cotton. The plug shell extends outward, the absorbent cotton is fixedly connected inside the plug shell, one end of the absorbent cotton extends into the connecting groove, and the heating element is fixedly connected to one end of the absorbent cotton.

[0009] Furthermore, a through groove is provided on one side of the plug shell, and the through groove is connected to the absorbent cotton.

[0010] Furthermore, the water-absorbing part also includes a connecting cylinder, which is arranged around the plug shell.

[0011] Furthermore, the inner wall of the connecting cylinder is provided with threaded grooves for external connection.

[0012] Furthermore, a support boss is provided in the connecting groove, and the heating element is fixedly connected to the support boss.

[0013] Furthermore, the support boss is provided with an embedding groove, and a portion of the heating element is housed in the embedding groove.

[0014] Furthermore, the connecting groove has a double-pass structure.

[0015] Furthermore, the housing is provided with a mounting groove, and the circuit board is housed in the mounting groove.

[0016] Furthermore, the circuit board is equipped with a control module, which is used to control the heating temperature of the heating element according to the detection value of the humidity sensor, thereby adjusting the airflow humidity in the connecting groove.

[0017] The beneficial effects of this utility model are:

[0018] This invention extends the water-absorbing part into the connecting groove, the two ends of which connect to the breathing tube. A heating element heats the water in the water-absorbing part to vaporize it, thereby humidifying the area inside the connecting groove. The circuit board controls the heating temperature of the heating element based on the detection value of the humidity sensor, thus regulating the humidity of the airflow inside the connecting groove. This ensures that the airflow has appropriate humidity when the user breathes, improving the accuracy of humidity control. In summary, this humidification control structure for a sleep apnea machine can effectively and precisely control the humidity of the airflow in the breathing tube, improving the user's comfort when using the ventilator. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall humidification control structure of the sleep apnea machine of this utility model;

[0020] Figure 2 This is a cross-sectional view of the humidification control structure of the sleep apnea machine of this utility model;

[0021] Figure 3 for Figure 2 A magnified view of a portion labeled A;

[0022] Figure 4 This is a logic block diagram of the humidification system of the humidification control structure for a sleep apnea machine according to this utility model.

[0023] The attached figures are labeled as follows:

[0024] Housing 1, water-absorbing part 11, plug-in housing 111, through groove 1111, water-absorbing cotton 112, connecting cylinder 113, threaded groove 1131, connecting groove 12, support boss 121, embedding groove 1211, mounting groove 13.

[0025] Heating element 2;

[0026] Circuit board 3, power supply interface 31;

[0027] Humidity sensor 4. Detailed Implementation

[0028] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.

[0029] Please refer to Figures 1-3 This utility model proposes a humidification control structure for a sleep apnea machine, including a housing 1, a heating element 2, a circuit board 3, and a humidity sensor 4. One end of the housing 1 is provided with a water absorption part 11, and the other end of the housing 1 is provided with a connecting groove 12 for connecting the breathing tube. The water absorption part 11 extends into the connecting groove 12. The heating element 2 is fixedly connected to one end of the water absorption part 11. The humidity sensor 4 is located in the connecting groove 12. The circuit board 3 is fixedly connected to the housing 1 and electrically connected to the heating element 2 and the humidity sensor 4 respectively.

[0030] In this embodiment, the water-absorbing part 11 extends into the connecting groove 12, and the two ends of the connecting groove 12 are connected to the breathing tube. The heating element 2 is used to heat the water in the water-absorbing part 11 to vaporize it, thereby humidifying the connecting groove 12. The vaporized moisture enters the connecting groove 12 and then enters the breathing tube. The humidity sensor 4 needs to be placed in front of the airflow direction. The circuit board 3 controls the heating temperature of the heating element 2 according to the detection value of the humidity sensor 4, thereby adjusting the humidity of the airflow in the connecting groove 12, so that the airflow can have a suitable humidity when the user breathes, improving the accuracy of humidity control. When the humidity of the airflow in the breathing tube is higher or lower than the set value, the circuit board 3 will control the temperature of the heating element 2 to control the increase or decrease of the humidification, so that the humidity of the airflow in the breathing tube is kept within the error range of the set value. If the humidity of the airflow in the breathing tube is lower than 30% RH for a long time, the external host of the connecting circuit board 3 will emit a low humidity warning sound.

[0031] Please refer to Figure 4 When treatment begins, the humidifier temperature must be within a safe range. Then the humidification function will be activated. After the humidification function is activated, the humidity sensor 4 will detect the humidity of the airflow in the breathing duct in real time. When the humidity is lower than the set value, the heating element temperature will be increased. When the humidity is higher than the set value, the heating element temperature will be decreased.

[0032] In summary, the humidification control structure of this sleep apnea machine can effectively and precisely control the humidity of airflow within the breathing duct, improving user comfort when using the machine.

[0033] In this embodiment, the water-absorbing part 11 includes a plug shell 111 and a water-absorbing cotton 112. The plug shell 111 extends outward and provides a protective structure for the water-absorbing cotton 112. The water-absorbing cotton 112 is fixedly connected inside the plug shell 111, and one end of the water-absorbing cotton 112 extends into the connecting groove 12. The heating element 2 is fixedly connected to one end of the water-absorbing cotton 112. When humidifying, the water-absorbing part 11 needs to be inserted into a container filled with water. After insertion, the bottom of the water-absorbing cotton 112 is submerged in water and absorbs the water. While the water-absorbing cotton 112 continues to absorb water, the top of the water-absorbing cotton 112 is wet. The heating element 2 can heat the water on the top of the water-absorbing cotton 112 to vaporize it.

[0034] In this embodiment, a through groove 1111 is provided on one side of the plug shell 111. The through groove 1111 is connected to the absorbent cotton 112. The through groove 1111 is used to allow water to permeate into the plug shell 111, so that the absorbent cotton 112 can absorb water smoothly.

[0035] In this embodiment, the water-absorbing part 11 also includes a connecting cylinder 113. The connecting cylinder 113 is arranged around the plug shell 111. The inner wall of the connecting cylinder 113 is provided with a threaded groove 1131 for external connection. The arrangement of the connecting cylinder 113 allows the water-absorbing part 11 to be installed in a container with external threads by tightening the threads, which facilitates external and stable fixation.

[0036] In this embodiment, a support boss 121 is provided in the connecting groove 12. The heating element 2 is fixedly connected to the support boss 121. The support boss 121 is used to provide a stable mounting structure for the heating element 2, so that the heating element 2 can be stably mounted on the top of the absorbent cotton 112.

[0037] In this embodiment, the support boss 121 is provided with an embedding groove 1211, and a portion of the heating element 2 is housed in the embedding groove 1211. The embedding groove 1211 is used to provide a space for the heating element 2 to be embedded and fixed, thereby enhancing the fit between the heating element 2 and the top of the absorbent cotton 112.

[0038] In this embodiment, the connecting groove 12 has a double-pass structure, which facilitates the connection of the breathing tube.

[0039] In this embodiment, the housing 1 is provided with a mounting groove 13, and the circuit board 3 is housed in the mounting groove 13. The mounting groove 13 is used to provide a stable mounting structure for the circuit board 3. A power supply interface 31 is provided on one side of the circuit board 3. The power supply interface 31 passes through the housing 1 and protrudes from one side of the housing 1. The user can supply power to the circuit board 3 by inserting a conductive wire into the power supply interface 31.

[0040] In this embodiment, the circuit board 3 is equipped with a control module. The control module is used to control the heating temperature of the heating element 2 according to the detection value of the humidity sensor 4, thereby adjusting the airflow humidity in the connection slot 12. The control module consists of three parts: a humidity detection circuit, a temperature detection circuit, and a heating element drive circuit. The humidity detection circuit, temperature detection circuit, and heating element drive circuit are all electrically connected to the main control chip of the external host. The heating element 2 is connected in series with the drain of the MOSFET and grounded. The main control chip outputs a PWM signal to control the switching of the MOSFET, thereby controlling the temperature of the heating element. The temperature detection circuit detects the change in the resistance value of the NTC resistor of the heating element 2, amplifies and processes the signal, and inputs it to the main control chip to realize real-time monitoring of the temperature of the heating element 2. The humidity data detected by the humidity sensor 4 is sent to the main control chip through a wire connected to the motherboard to realize the monitoring of the airflow humidity inside the breathing duct.

[0041] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.

Claims

1. A sleep apnea humidifier control structure, characterized in that, The utility model provides a humidifier, including shell, heating sheet, circuit board, humidity sensor, one end of shell is equipped with water absorption part, the other end of shell is equipped with the connecting groove for connecting breathing pipeline, water absorption part extends to connecting groove, heating sheet fixedly connected on one end of water absorption part, humidity sensor is located in connecting groove, circuit board is fixedly connected in shell and is connected with heating sheet, humidity sensor electricity respectively.

2. The sleep therapy humidifier control structure of claim 1, wherein, The water absorption part includes a plug-in shell and a water absorption cotton, the plug-in shell extends outward, the water absorption cotton is fixedly connected in the plug-in shell, one end of the water absorption cotton extends into the connecting groove, and the heating sheet is fixedly connected on one end of the water absorption cotton.

3. The sleep therapy humidifier control structure of claim 2, wherein, One side of the plug-in shell is provided with a through groove, and the through groove is in communication with the water absorption cotton.

4. The sleep therapy humidifier control structure of claim 2, wherein, The water absorption part further includes a connecting cylinder, and the connecting cylinder is arranged around the plug-in shell.

5. The sleep therapy humidifier control structure of claim 4, wherein, An inner wall of the connecting cylinder is provided with a threaded groove for external connection.

6. The sleep therapy humidifier control structure of claim 1, wherein, The connecting groove is provided with a support boss, and the heating sheet is fixedly connected on the support boss.

7. The sleep therapy humidifier control structure of claim 6, wherein, The support boss is provided with an embedding groove, and a part of the heating sheet is accommodated in the embedding groove.

8. The sleep therapy humidifier control structure of claim 1, wherein, The connecting groove has a double-pass structure.

9. The sleep therapy humidifier control structure of claim 1, wherein, The shell is provided with a mounting groove, and the circuit board is accommodated in the mounting groove.

10. The sleep therapy humidifier control structure of claim 1, wherein, The circuit board is provided with a control module, the control module is used for controlling the heating temperature of the heating sheet according to the detection value of the humidity sensor, and then adjusting the airflow humidity in the connecting groove.

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