Air flow temperature and humidity regulation and control method and breathing machine for sleep

Abstract

The invention belongs to the technical field of medical instruments, and discloses an airflow temperature and humidity regulation and control method and a breathing machine for sleep. Heating the water tank; the air inlet pipeline is connected with the air inlet and the inlet pipe head and is provided with a first switch valve; the air outlet pipeline is connected with the outlet pipe head and the air outlet and is provided with a second switch valve; the supercharging motor is arranged at the end, close to the air inlet, of the air inlet pipeline; the cold end of the thermoelectric refrigeration module is connected with the refrigeration part of the air inlet pipeline, and the hot end is connected with the heating part of the air outlet pipeline; the straight-through branch pipe is connected with the air inlet pipeline and the air outlet pipeline, and a third switch valve is arranged on the straight-through branch pipe; an external temperature and humidity sensor; the control module is connected with the heating water tank, the pressurizing motor, the switch valve, the external temperature and humidity sensor and the thermoelectric refrigeration module; and the refrigerating part is connected with a condensate collecting box. Operation can be regulated and controlled in combination with the environment temperature and humidity, the temperature and humidity of output airflow are appropriate, especially when the external environment air humidity is too large, the rain leakage phenomenon can be effectively avoided, and the use comfort is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and particularly relates to an air flow temperature and humidity control method and a sleep ventilator. Background Art

[0002] In recent years, with the development of medical technology and the improvement of people's living standards, people have paid more attention to sleep quality. Sleep apnea syndrome is a relatively common sleep disorder in which breathing stops during sleep. In severe cases, it will affect physical health and even endanger life. Wearing a sleep ventilator is one of the main treatment methods, also known as positive airway pressure therapy. Its working principle is to continuously introduce positive pressure air flow to keep the airway open and prevent apnea. In addition, this type of ventilator can also be used by patients with respiratory failure, chronic obstructive pulmonary disease, cardiogenic pulmonary edema, bronchial asthma, etc. to relieve the condition, improve the ventilation and gas exchange functions of the patients, help the patients recover and improve the quality of life of the patients.

[0003] At present, in order to increase the comfort of the wearer during use, most ventilators on the market are equipped with a heating water tank, so that the compressed air flows through the surface of the heated water body, carrying water vapor to increase the humidity of the compressed air, which plays a moisturizing role in the airway of the wearer and avoids discomfort such as dry airway during the long-term use of the wearer; at the same time, the heated water vapor in the heating water tank is used to heat the cold air to avoid the stimulation of the cold air. The setting of the heating water tank can solve the problems of dry airway and cold air stimulation to a certain extent, but it is found in the use process that there are problems that the air flow humidity and temperature are difficult to reach the set requirements at the same time, and there is often too high air flow humidity, and a large amount of condensed water is generated in the nasal mask / mask and the external breathing pipeline, resulting in the problem of "rain leakage". Especially when the environmental air humidity is high, the "rain leakage" phenomenon is more obvious, which seriously affects the use experience of the wearer. Summary of the Invention

[0004] In order to solve the problems mentioned in the above-mentioned prior art, the present invention provides an air flow temperature and humidity control method and a sleep ventilator, which are operated by combining the ambient temperature and humidity, so that the humidity and temperature of the compressed air flow output by the ventilator are appropriate, and the problem of "rain leakage" caused by too large humidity of the output air flow can be effectively avoided, especially the "rain leakage" problem caused by too large humidity of the external ambient air, and the use comfort is effectively improved.

[0005] The technical solution adopted by the present invention is as follows: A sleep ventilator, comprising: A housing; A heating water tank, detachably installed in the housing; An intake pipeline, one end of which is connected to the air inlet on the casing, and the other end is connected to the inlet pipe head of the heating water tank. A first switch valve is provided on the intake pipeline near the inlet pipe head. An exhaust pipeline, one end of which is connected to the outlet pipe head of the heating water tank, and the other end is connected to the air outlet of the casing. A second switch valve is provided on the exhaust pipeline near the exhaust pipe head. A booster motor is installed near the air inlet end of the intake pipeline and is used to generate a pressurized air flow. A thermoelectric refrigeration module, the cold end of which is connected to the refrigeration part of the intake pipeline, and the hot end is connected to the heating part of the exhaust pipeline. A direct-through branch pipe, one end of which is connected between the refrigeration part of the intake pipeline and the first switch valve, and the other end is connected between the second switch valve and the heating part of the exhaust pipeline. A third switch valve is provided on the direct-through branch pipe. An external temperature and humidity sensor is provided on the casing and is used to detect the environmental temperature and humidity. A control module is connected to the heating water tank, the booster motor, the first switch valve, the second switch valve, the third switch valve, the external temperature and humidity sensor, and the thermoelectric refrigeration module. Wherein, a condensate collection box is connected to the refrigeration part.

[0006] In an embodiment of the present application, a second heating module is further included. The second heating module is arranged at the heating part of the exhaust pipeline, on the side where the hot end faces the air outlet. The second heating module is connected to the control module.

[0007] In an embodiment of the present application, a pressure sensor, a flow rate sensor, and an internal temperature and humidity sensor connected to the control module are further included. The pressure sensor, the flow rate sensor, and the internal temperature and humidity sensor are arranged near the air outlet of the exhaust pipeline.

[0008] In an embodiment of the present application, the heating water tank includes a liquid storage box and a cover body. The cover body is hinged to one side of the liquid storage box. The inlet pipe head and the outlet pipe head are both arranged on the cover body. The outlet end of the inlet pipe head inside the cover body is bent towards the liquid storage box. The inlet pipe head and the outlet pipe head both have a first plug-in part outside the cover body. The inlet pipe head and the outlet pipe head are respectively hermetically plugged and communicated with the intake pipeline and the exhaust pipeline through the first plug-in part. A heating plate is provided at the bottom of the liquid storage box, and the heating plate is adapted to the first heating module inside the casing. The first heating module is connected to the control module.

[0009] In an embodiment of the present application, an ultrasonic humidification module is further provided at the bottom of the liquid storage box. The ultrasonic humidification module is adapted to the ultrasonic energy supply module inside the casing, and the ultrasonic energy supply module is connected to the control module.

[0010] In an embodiment of the present application, it further includes a condensate collection pipe. The condensate collection pipe is located inside the casing, one end is connected to the bottom of the condensate collection tank, and the other end is provided with a second plug-in part, and the second plug-in part is located at the installation position of the heating water tank of the casing; a sealing interface adapted to the second plug-in part is provided on the cover of the heating water tank; a liquid level sensor is provided in the condensate collection tank, and a fourth switch valve is provided on the condensate collection pipe; the liquid level sensor and the fourth switch valve are both connected to and associated with the control module.

[0011] An air flow temperature and humidity regulation method, using the sleep ventilator described in any one of the above, includes the following steps: S100, Start the sleep ventilator, detect the ambient temperature and ambient humidity, and select to execute step S200 or S300 according to the ambient humidity value; S200, When the ambient humidity value is less than the preset humidity value, open the first switch valve and the second switch valve, close the third switch valve, start heating the heating water tank, adaptively control the heating power of the heating water tank according to the ambient temperature value, and at the same time operate the booster motor to provide compressed air; S300, When the ambient humidity value is greater than or equal to the preset humidity value, close the first switch valve and the second switch valve, open the third switch valve, and at the same time operate the booster motor and the thermoelectric refrigeration module, and use the cold end of the thermoelectric refrigeration module to condense and dehumidify the compressed air in the refrigeration part, and the hot end of the thermoelectric refrigeration module reheats the compressed air in the heating part.

[0012] In an embodiment of the present application, step S200 further includes: detecting the internal air flow humidity value and the internal air flow temperature value at the air outlet of the air outlet pipeline, and selecting to execute step S210, S220, S230 or S240 according to the internal air flow humidity value and the internal air flow temperature value; S210, When the internal air flow humidity value is within the set output humidity value range and the internal air flow temperature value is within the set output temperature value range, maintain the current operation; S220, When the internal air flow humidity value is within the set output humidity value range and the internal air flow temperature value is lower than the lower limit of the set output temperature value range, start the second heating module on the air outlet pipeline to heat the compressed air so that the internal air flow temperature value is maintained within the set output temperature value range; S230. When the humidity value of the internal air flow is higher than the upper limit of the set output humidity value range, the third switching valve is simultaneously opened, and the opening degrees of the first switching valve and the third switching valve are controlled to maintain the humidity value of the internal air flow within the set output humidity value range. At this time, if the temperature value of the internal air flow is within the set output temperature value range, the current operation is maintained. If the temperature value of the internal air flow is lower than the lower limit of the set output temperature value range, the second heating module is simultaneously started to heat the compressed air to maintain the temperature value of the internal air flow within the set output temperature value range. S240. When the humidity value of the internal air flow is lower than the lower limit of the set output humidity value range, the ultrasonic energy supply module is turned on to drive the ultrasonic humidification module in the heating water tank for ultrasonic humidification to maintain the humidity value of the internal air flow within the set output humidity value range. At this time, if the temperature value of the internal air flow is within the set output temperature value range, the current operation is maintained. If the temperature value of the internal air flow is lower than the lower limit of the set output temperature value range, the second heating module is simultaneously started to heat the compressed air to maintain the temperature value of the internal air flow within the set output temperature value range.

[0013] In an embodiment of the present application, in step S300, it further includes: detecting the humidity value and the temperature value of the internal air flow at the air outlet of the outlet pipeline, and adaptively adjusting the operating power of the thermoelectric refrigeration module according to the humidity value of the internal air flow to maintain the humidity value of the internal air flow within the set output humidity value range. At this time, if the temperature value of the internal air flow is within the set output temperature value range, the current operation is maintained. If the temperature value of the internal air flow is lower than the lower limit of the set output temperature value range, the second heating module is simultaneously started to heat the compressed air to maintain the temperature value of the internal air flow within the set output temperature value range.

[0014] In an embodiment of the present application, it further includes step S400. The condensed water in the compressed air in the refrigeration part is collected in the condensate collection tank, the liquid level value information in the condensate collection tank is collected, and when the liquid level value is greater than or equal to the preset liquid level value, the fourth switching valve on the condensate collection pipe is opened to drain the condensate to the heating water tank. When the liquid level value is less than the preset liquid level value, the fourth switching valve is maintained closed.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The air flow temperature and humidity control method of the present invention and the sleep ventilator thereof can directly output the air with excessive humidity after condensation dehumidification by setting the direct-through branch pipe and the thermoelectric refrigeration module without heating and humidifying treatment, effectively avoiding the problem of excessive humidity of the output compressed air. At the same time, the thermoelectric refrigeration module (a semiconductor thermoelectric refrigeration module) is used for condensation dehumidification, and its characteristics of heat absorption at the cold end and heat release at the hot end are skillfully utilized to realize the cooling and condensation dehumidification of the compressed air and reheating of the compressed air at the same time, avoiding the too low temperature of the output air flow. The design is ingenious, the structure is simple and compact, the energy consumption is low, and the regulation is sensitive. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the sleep ventilator in the present application.

[0018] Figure 2 It is a schematic side view structural diagram of the heating water tank in the present application.

[0019] Figure 3 It is a schematic side view structural diagram of the heating water tank when the cover body is opened in the present application.

[0020] Figure 4 It is a schematic structural diagram of the installation location of the heating water tank in the housing of the sleep ventilator in the present application.

[0021] Figure 5 It is a schematic structural diagram of the refrigeration part and the condensate collection tank in the present application.

[0022] Figure 6 It is a schematic step flow diagram of the air flow temperature and humidity regulation method in the present application.

[0023] Reference Signs: 1. Housing; 11. Installation location of the heating water tank; 111. First heating module; 112. Ultrasonic energy supply module; 2. Heating water tank; 21. Liquid storage box; 211. Heating plate; 212. Ultrasonic humidification module; 22. Cover body; 221. Inlet pipe head; 222. Outlet pipe head; 223. Sealing interface; 224. First plug-in part; 3. Intake pipeline; 31. Intake port; 32. First switch valve; 33. Refrigeration part; 331. Condensate collection tank; 332. Condensate collection pipe; 333. Second plug-in part; 334. Fourth switch valve; 4. Exhaust pipeline; 41. Outlet port; 42. Second switch valve; 43. Heating part; 44. Second heating module; 45. Pressure sensor; 46. Flow rate sensor; 47. Internal temperature and humidity sensor; 5. Boosting motor; 6. Thermoelectric refrigeration module; 61. Cold end; 62. Hot end; 7. Straight-through branch pipe; 71. Third switch valve; 8. External temperature and humidity sensor. Detailed implementation manners

[0024] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the accompanying drawings and the description are regarded as exemplary in nature rather than restrictive.

[0025] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships when the product of the present invention is normally placed, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0026] The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0027] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0030] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] As Figures 1 to 6 shown, the embodiment of the present invention provides an air flow temperature and humidity control method and a sleep ventilator. The sleep ventilator includes a housing 1, a heating water tank 2, an intake air pipe 3 and an outlet air pipe 4 connected to the heating water tank 2, a booster motor 5 provided on the intake air pipe 3, a direct-through branch pipe 7 connecting the intake air pipe 3 and the outlet air pipe, a thermoelectric refrigeration module 6, an external temperature and humidity sensor 8, a control module (not shown in the figure), etc.

[0032] Specifically, as Figure 1 shown, the heating water tank 2 is detachably installed in the heating water tank installation part 11 of the housing 1 and is inserted into the heating water tank installation part 11 through an opening on one side of the housing 1 for limit installation. The heating water tank 2 is used to heat and humidify compressed air.

[0033] The intake air pipe 3 is arranged in the housing 1, one end is connected to the air inlet 31 on the housing 1, and the other end extends to the heating water tank installation part 11 and is adaptively connected to the inlet pipe head 221 on the heating water tank 2. A first switch valve 32 is provided on the intake air pipe 3 near the inlet pipe head 221. A detachable filter element is provided in the air inlet 31 to filter the incoming air.

[0034] The outlet air pipe 4 is arranged in the housing 1, one end is arranged in the heating water tank installation part 11 and is adaptively connected to the outlet pipe head 222 on the heating water tank 2, and the other end extends to and is connected to the air outlet 41 of the housing 1. The air outlet 41 is a connection part for an external breathing pipe and is used to deliver pressurized compressed air to the mask / nasal mask and the wearer. A second switch valve 42 is provided on the outlet air pipe 4 near the outlet pipe head 222.

[0035] Preferably, silicone diaphragm valves are provided at the air outlet end of the intake air pipe 3, the air inlet end of the outlet air pipe 4, and the air outlet 41. This can prevent foreign objects from entering through the openings and causing pollution inside the intake air pipe 3 and the outlet air pipe 4.

[0036] The booster motor 5 is installed at one end of the intake air pipe 3 near the air inlet 31 and is used to suck external air from the air inlet 31 for pressurization to generate a stable pressurized air flow.

[0037] The thermoelectric refrigeration module 6 is arranged inside the machine case 1. It is a semiconductor thermoelectric refrigeration module and is equipped with a ballast. The thermoelectric refrigeration module 6 has a cold end 61 and a hot end 62. Under the action of direct current, its cold end 61 can absorb heat and cool down, and its hot end 62 can release heat and heat up. The cold end 61 of the thermoelectric refrigeration module 6 is in corresponding heat transfer connection with the refrigeration part 33 on the intake air pipeline 3 to cool down the air flow flowing in the refrigeration part 33. The hot end of the thermoelectric refrigeration module 6 is in corresponding heat transfer connection with the heating part 43 on the exhaust air pipeline 4. When the thermoelectric refrigeration module 6 operates, the positions of the cold end 61 and the hot end 62 are fixed, and preferably metal heat conducting parts are arranged at both the cold end 61 and the hot end 62 to wrap the refrigeration part 33 and the heating part 43. Further preferably, the air flow pipelines at the refrigeration part 33 and the heating part 43 are heat conducting metal pipelines, and a plurality of baffle parts are arranged to ensure fast heat conduction and a sufficient flow path length, effectively realizing the cooling / condensation and reheating of the compressed air flow.

[0038] The straight-through branch pipe 7 connects the intake air pipeline 3 and the exhaust air pipeline 4. The intake end of the straight-through branch pipe 7 is connected between the refrigeration part 33 and the first switching valve 32 of the intake air pipeline 3, and the exhaust end of the straight-through branch pipe 7 is connected between the second switching valve 42 and the heating part 43 of the exhaust air pipeline 4. A third switching valve 71 is arranged on the straight-through branch pipe 7, and the connection, disconnection and opening degree of the straight-through branch pipe 7 can be controlled through the third switching valve 71.

[0039] The external temperature and humidity sensor 8 is arranged on the machine case 1 and is connected to the outside for detecting the temperature and humidity of the external environment.

[0040] The control module (not shown in the figure) is connected to the heating water tank 2, the booster motor 5, the first switching valve 32, the second switching valve 42, the third switching valve 71, the external temperature and humidity sensor 8, the thermoelectric refrigeration module 6, etc. It can receive, save and process the detection data of the external temperature and humidity sensor 8, and can control the heating temperature and heating power of the heating water tank 2, control the operation, shutdown and operation power of the booster motor 5 and the thermoelectric refrigeration module 6, and control the opening, closing and opening degree of the first switching valve 32, the second switching valve 42, the third switching valve 71, etc.

[0041] Wherein, a condensate collection tank 331 is connected and arranged under the refrigeration part 33 on the intake air pipeline 3 for collecting and discharging externally the condensate condensed from the compressed air in the refrigeration part 33.

[0042] This sleep ventilator can directly output the air with excessive humidity after condensation and dehumidification by setting up a direct-through branch pipe 7 and a thermoelectric refrigeration module 6, without the need for heating and humidifying treatment, effectively avoiding the problem of excessive humidity of the output compressed air. At the same time, the thermoelectric refrigeration module 6 (a semiconductor thermoelectric refrigeration module) is used for condensation and dehumidification, making clever use of the characteristics of heat absorption at the cold end and heat release at the hot end to achieve the cooling, condensation and dehumidification of the compressed air, and reheating the compressed air at the same time, avoiding the problem that the temperature of the output air flow is too low. The design is ingenious, the structure is simple and compact, the energy consumption is low, and the regulation is sensitive. This sleep ventilator can well adapt to the use in different humidity environments, effectively avoiding the problem of "rain leakage" caused by the generation of a large amount of condensed water in the nasal mask / mask and the external breathing pipeline during long-term use, and having high wearing comfort.

[0043] In one embodiment, it further includes a second heating module 44, which is arranged at the heating part 43 of the air outlet pipe 4, on the side where the hot end 62 of the thermoelectric refrigeration module 6 faces the air outlet 41. The second heating module 44 is connected to the control module. Setting this second heating module 44 can be used to supplementally heat the discharged compressed air flow to ensure that the temperature of the discharged air flow is appropriate and avoid affecting the breathing comfort of the wearer due to too low temperature. In addition, the second heating module 44 is arranged after the hot end 62 of the thermoelectric refrigeration module 6, which can realize the supplementary heating of the discharged compressed air flow in different operating modes.

[0044] A pressure sensor 45, a flow rate sensor 46, an internal temperature and humidity sensor 47, etc. are also provided. The pressure sensor 45, the flow rate sensor 46, and the internal temperature and humidity sensor 47 are arranged near the air outlet 41 of the air outlet pipe 4 and are all connected to the control module. They are used to detect the pressure, flow rate, temperature and humidity of the compressed air flow before discharge, so as to intelligently regulate the switching and operation conditions of the booster motor 5, the thermoelectric refrigeration module 6, the heating water tank 2, the first switching valve 32, the second switching valve 42, the third switching valve 71, etc., ensuring that the pressure, flow rate, humidity and temperature of the discharged compressed air flow are accurate, stable and meet the set requirements.

[0045] In one embodiment, as Figure 2 、 Figure 3 and Figure 4 shown, the heating water tank 2 includes a matching liquid storage box 21 and a cover 22. The cover 22 is hinged to one side of the liquid storage box 21, and a matching sealing ring is arranged at the openings of the liquid storage box 21 and the cover 22. The liquid storage box 21 is located at the lower part for storing water, and the cover 22 can be opened or sealed to cover the liquid storage box 21.

[0046] Both the inlet pipe head 221 and the outlet pipe head 222 are provided on the cover body 22. The inlet pipe head 221 has an extended part inside the cover body 22. The outlet end of the extended part located inside the cover body 22 is bent towards the liquid storage box 21, but the outlet end is higher than the opening / highest liquid level of the liquid storage box 21, so that the air flow discharged to the heating water tank 2 through the air inlet pipeline 3 vertically impacts the water surface, can better carry the water vapor on the heated water surface, realize the humidification of the compressed air flow, and can avoid the outlet end of the inlet pipe head 221 being immersed in the water body, thus avoiding problems such as noise.

[0047] Both the inlet pipe head 221 and the outlet pipe head 222 are provided with straight first insertion parts 224 on the outside of the cover body 22. The inlet pipe head 221 and the outlet pipe head 222 are respectively hermetically inserted and communicated with the air inlet pipeline 3 and the air outlet pipeline 4 through the first insertion parts 224. When the heating water tank 2 is installed in the machine shell 1, the first insertion parts 224 are inserted into the outlet end of the air inlet pipeline 3 and the inlet end of the air outlet pipeline 4, realizing the quick connection of the heating water tank 2 with the air inlet pipeline 3 and the air outlet pipeline 4.

[0048] A heating plate 211 is arranged at the bottom of the liquid storage box 21. The heating plate 211 is adapted to the first heating module 111 inside the machine shell 1, and the first heating module 111 is connected to the control module. When the heating water tank 2 is installed in the machine shell 1, the heating plate 211 is adaptively connected to the first heating module 111, and the water body in the heating water tank 2 can be heated through the cooperation of the first heating module 111 and the heating plate 211.

[0049] Furthermore, an ultrasonic humidification module 212 is also arranged at the bottom of the liquid storage box 21. The ultrasonic humidification module 212 is adapted to the ultrasonic energy supply module 112 at the installation position 11 of the heating water tank on the machine shell 1. The ultrasonic energy supply module 112 is connected to the control module. When the heating water tank 2 is installed in the machine shell 1, the ultrasonic energy supply module 112 is adaptively connected to the ultrasonic humidification module 212. At this time, the operation of the ultrasonic humidification module 212 can be controlled through the control module, increasing the atomization humidification effect of the water body in the heating water tank 2, thereby promoting the humidification effect on the compressed air flow and enabling it to obtain a higher humidity. The ultrasonic humidification module 212 and the ultrasonic energy supply module 112 are set to assist in promoting humidification to solve the problem that only heating humidification cannot well meet the humidity requirements of the discharged compressed air flow in a dry environment or when the flow rate of the compressed air flow is too large.

[0050] Furthermore, as Figure 5As shown in the figure, the sleep ventilator further includes a condensate collection pipe 332. The condensate collection pipe 332 is arranged inside the housing 1, one end is connected to the bottom of the condensate collection tank 331, and the other end is provided with a second insertion part 333. The second insertion part 333 is arranged at the installation position 11 of the heating water tank of the housing 1; a sealing interface 223 adapted to the second insertion part 333 is provided on the cover body 22 of the heating water tank 2. When the heating water tank 2 is installed at the installation position 11 of the heating water tank of the housing 1, the second insertion part 333 is hermetically inserted into the sealing interface 223 to realize the connection between the condensate collection pipe 332 and the heating water tank 2. The sealing interface 223 and the first insertion part 224 of the inlet pipe head 221 and the outlet pipe head 222 are located on the same side surface of the cover body 22 facing the same direction; when the heating water tank 2 is pushed into the heating water tank installation position from the opening on the side of the housing 1, the connection between the heating water tank 2 and the intake air pipeline 3, the exhaust air pipeline 4 and the condensate collection pipe 332 is realized on the side wall corresponding to the opening. Preferably, the horizontal position of the condensate collection tank 331 is slightly higher than the sealing interface 223, and the condensate collection pipe 332 is arranged obliquely.

[0051] A liquid level sensor (not shown in the figure) is arranged inside the condensate collection tank 331, and a fourth switch valve 334 is arranged on the condensate collection pipe 332. Both the liquid level sensor and the fourth switch valve 334 are connected to the control module, and the liquid level sensor and the fourth switch valve 334 are associated with each other. The liquid level value information detected by the liquid level sensor is transmitted to the control module, and the fourth switch valve 334 is controlled to be opened or closed through the control module, so as to automatically and timely drain the condensate water in the condensate collection tank 331 and ensure the long-term continuous and stable operation of the refrigeration part 33.

[0052] Among them, the first switch valve 32, the second switch valve 42, the third switch valve 71 and the fourth switch valve 334 are all one-way switch valves.

[0053] Based on the same inventive concept, as Figure 6 shown, this embodiment also discloses an air flow temperature and humidity regulation method, which is realized by the above-mentioned sleep ventilator and includes the following steps.

[0054] Step S100, start the sleep ventilator, detect the ambient temperature and ambient humidity information, and select to run the following step S200 or S300 according to the ambient humidity value.

[0055] Specifically, connect the power supply, start the sleep ventilator, detect the ambient temperature and ambient humidity information through the external temperature and humidity sensor 8, and transmit the detected ambient temperature and ambient humidity information to the control module in real time. The control module compares the detected ambient humidity value with the preset parameters and preset programs, and selects to run the following step S200 or S300.

[0056] Step S200: When the ambient humidity value is less than the preset humidity value, turn on the first switching valve 32 and the second switching valve 42, turn off the third switching valve 71, start heating the heating water tank 2, adaptively control the heating power of the heating water tank 2 according to the ambient temperature value, and at the same time operate the booster motor 5 to supply compressed air.

[0057] Specifically, when the ambient humidity value is less than the preset humidity value, it indicates that the ambient humidity is not too high. The preset humidity value is preferably 60% - 70%. At this time, the compressed air flow provided by the booster motor 5 enters the heating water tank 2 and is humidified by the water vapor in the heating water tank 2. Usually, the heating water tank 2 adaptively controls the heating power according to the set gear and the ambient temperature value for heating, and heats the water body to maintain it at the set temperature. When the difference between the temperature value corresponding to the set gear and the ambient temperature value is relatively large, the heating power of the heating water tank 2 increases; when the difference between the temperature value corresponding to the set gear and the ambient temperature value is relatively small, the heating power of the heating water tank 2 decreases, and the heating temperature in the heating water tank 2 is stably maintained within the set range.

[0058] Step S300: When the ambient humidity value is greater than or equal to the preset humidity value, turn off the first switching valve 32 and the second switching valve 42, turn on the third switching valve 71 on the direct-through branch pipe 7, and at the same time operate the booster motor 5 and the thermoelectric refrigeration module 6. Use the cold end 61 of the thermoelectric refrigeration module 6 to cool the compressed air inside the refrigeration part 33, so that the compressed air is cooled in the refrigeration part 33, and the moisture contained in it is condensed and intercepted, realizing the condensation dehumidification of the compressed air; the hot end 62 of the thermoelectric refrigeration module 6 reheats the compressed air inside the heating part 43, so that the compressed air after condensation dehumidification is reheated and then discharged, avoiding the influence on the use experience of the ventilator wearer due to the too low temperature of the discharged compressed air flow. Through this step S300, the compressed air flow when the ambient humidity is too high can be condensed and dried to a certain extent, so that the humidity of the discharged compressed air flow is appropriate, and the phenomenon of "rain leakage" caused by too high ambient humidity can be avoided.

[0059] Furthermore, in step S200, it also includes: The internal humidity and temperature sensor 47 detects the internal air flow humidity value and the internal air flow temperature value at the air outlet 41 of the outlet pipeline 4, and selects to run the following step S210, S220, S230 or S240 according to the internal air flow humidity value and the internal air flow temperature value.

[0060] Step S210: When the internal air flow humidity value detected by the internal humidity and temperature sensor 47 is within the set output humidity value range, and at the same time the internal air flow temperature value is within the set output temperature value range, then maintain the current operation.

[0061] Step S220: When the humidity value of the internal air flow detected by the internal temperature and humidity sensor 47 is within the set output humidity value range, but the internal air flow temperature value is lower than the lower limit of the set output humidity value range, the second heating module 44 on the air outlet pipe 4 is activated to heat the compressed air to be output, so that the internal air flow temperature value detected at the air outlet 41 of the air outlet pipe 4 is maintained within the set output temperature value range. This can effectively solve the problem that when humidifying through the heating water tank 2, the air flow temperature cannot reach the set output temperature value range when the air flow humidity meets the requirements.

[0062] Step S230: When the humidity value of the internal air flow detected by the internal temperature and humidity sensor 47 is higher than the upper limit of the set output humidity value range, while opening the first switching valve 32 and the second switching valve 42 to allow the air flow to pass through the heating water tank 2, the third switching valve 71 is opened, that is, the direct-through branch pipe 7 is opened simultaneously; and the opening degrees of the first switching valve 32 and the third switching valve 71 are controlled to achieve shunt control of the compressed air flow, so that a part of the compressed air flow passes through the heating water tank 2 for heating and humidification and then is discharged to the air outlet 41, and another part of the compressed air flow is directly discharged to the air outlet 41 without heating and humidification, so that the humidity value of the mixed compressed air flow discharged to the air outlet 41 detected by the internal temperature and humidity sensor 47 is maintained within the set output humidity value range. At this time, if the internal air flow temperature value detected at the air outlet 41 is within the set output temperature value range, the current operation is maintained; if the internal air flow temperature value detected at the air outlet 41 is lower than the lower limit of the set output temperature value range, the second heating module 44 on the air outlet pipe 4 is started simultaneously to heat the compressed air flow, so that the internal air flow temperature value detected at the air outlet 41 is maintained within the set output temperature value range. This can achieve precise control of the temperature and humidity of the discharged compressed air flow, and can effectively avoid the problem of "rain leakage" caused by excessive humidification of the compressed air flow resulting in a large amount of condensed water in the nasal mask / face mask and the external breathing pipeline.

[0063] Step S240: When the internal air flow humidity value detected by the internal temperature and humidity sensor 47 is lower than the lower limit of the set output humidity value range, the ultrasonic energy supply module 112 is activated to drive the ultrasonic humidification module 212 in the heating water tank 2 to operate for ultrasonic humidification. That is, through the action of ultrasonic waves on the heated water body, it promotes the heated water body to generate water vapor, so that when the compressed air flow passes through the heating water tank 2, it can carry more water vapor, improving the humidification degree of the air flow, and enabling the internal air flow temperature value detected at the air outlet 41 to be maintained within the set output temperature value range. At this time, if the internal air flow temperature value detected at the air outlet 41 is within the set output temperature value range, the current operation is maintained; if the internal air flow temperature value detected at the air outlet 41 is lower than the lower limit of the set output temperature value range, the second heating module 44 on the air outlet pipe 4 is simultaneously activated to heat the compressed air, so that the internal air flow temperature value is maintained within the set output temperature value range.

[0064] By setting the ultrasonic energy supply module 112 and the ultrasonic humidification module 212 and starting the operation when the internal air flow humidity value is lower than the set output humidity value range, it can effectively avoid the problem that the humidity of the discharged compressed air flow is too low, causing dry discomfort in the wearer's respiratory tract; and it can well solve the problem that it is difficult to meet the humidity requirements of the discharged compressed air flow only through heating and humidification in a dry environment (especially in an extremely dry environment) or when the flow rate of the compressed air flow is large. This makes the adaptability range of this sleep ventilator wider, the humidity adjustment more intelligent and accurate, and the wearing and using comfort better.

[0065] It should be noted that generally, the internal air flow temperature value detected at the air outlet 41 will not be higher than the upper limit of the set output temperature value range. When designing, the upper limit value of the heating range of the heating water tank 2 is matched with the upper limit of the set output temperature value range, and the set output temperature value range is usually higher than the normal ambient temperature value.

[0066] Furthermore, in step S300, it also includes: detecting the internal air flow humidity value and the internal air flow temperature value at the air outlet 41 of the air outlet pipe 4, and adapting and adjusting the operating power of the thermoelectric refrigeration module 6 according to the detected internal air flow humidity value, so that the internal air flow humidity value at the air outlet 41 is maintained within the set output humidity value range; specifically, when the detected internal air flow humidity value is higher than the upper limit of the set output humidity value range, the operating power of the thermoelectric refrigeration module 6 is increased, and conversely, when the detected internal air flow humidity value is lower than the lower limit of the set output humidity value range, the operating power of the thermoelectric refrigeration module 6 is decreased.

[0067] At this time, if it is detected that the internal air flow temperature value at the air outlet 41 is within the set output temperature value range, the current operation is maintained; if it is detected that the internal air flow temperature value at the air outlet 41 is lower than the lower limit of the set output temperature value range, the second heating module 44 on the air outlet pipe 4 is simultaneously started to heat the compressed air, so that the internal air flow temperature value is maintained within the set output temperature value range.

[0068] This step S300 can realize the automatic adjustment of the humidity and temperature of the compressed air flow output when the environmental humidity is high, ensure the compressed air flow with appropriate output temperature and humidity, improve the wearing comfort of the user, and avoid the occurrence of the "rain leakage" phenomenon.

[0069] In a further embodiment, it further includes step S400. After running step S300 or when step S300 is being run, the compressed air in the refrigeration part 33 will generate condensed water due to the refrigeration of the cold end 61 of the thermoelectric refrigeration module 6. This condensed water is collected in the condensate collection tank 331 under the refrigeration part 33. The real-time liquid level value information in the condensate collection tank 331 is collected by the liquid level sensor, and this liquid level value information is transmitted to the control module and compared with the preset liquid level value. When it is judged that the liquid level value in the condensate collection tank 331 is greater than or equal to the preset liquid level value, the fourth switching valve 334 on the condensate collection pipe 332 is opened to drain the condensed water to the heating water tank 2; when it is judged that the liquid level value in the condensate collection tank 331 is less than the preset liquid level value, the fourth switching valve 334 is maintained closed. Ensure the timely discharge of the condensed water in the condensate collection tank 331, avoid the blockage of the refrigeration part 33 and the air inlet pipe 3 caused by the accumulation of condensed water, and enable the refrigeration part 33 to work continuously and stably for a long time.

Claims

1. A sleeping ventilator, characterized in that: include: chassis; A heating water tank is detachably mounted in the housing; An air inlet pipeline, one end of which is connected to the air inlet on the housing, and the other end is connected to the inlet pipe head of the heating water tank, and a first switch valve is provided at one end of the air inlet pipeline close to the inlet pipe head; An air outlet pipeline, one end of which is connected to the outlet pipe head of the heating water tank, and the other end of which is connected to the air outlet of the housing, and a second switch valve is provided on the end of the air outlet pipeline close to the air outlet pipe head; A boost motor, mounted on the intake duct near the intake end, for generating a boosted air flow; A thermoelectric cooling module, the cold end of which is connected to the cooling part of the air inlet pipeline, and the hot end of which is connected to the heating part of the air outlet pipeline; A straight branch pipe, one end of which is connected between the refrigeration part and the first switch valve of the air inlet pipe, and the other end of which is connected between the second switch valve and the heating part of the air outlet pipe, and a third switch valve is provided on the straight branch pipe; An external temperature and humidity sensor, disposed on the housing, for detecting ambient temperature and humidity; A control module connected to the heating water tank, the boost motor, the first switch valve, the second switch valve, the third switch valve, the external temperature and humidity sensor, and the thermoelectric cooling module; Wherein, the refrigeration unit is connected to a condensate collection box.

2. The sleeping ventilator according to claim 1, characterized in that: It also includes a second heating module, which is arranged at the heating part of the air outlet pipeline and located on the side of the hot end facing the air outlet. The second heating module is connected to the control module.

3. The sleeping ventilator according to claim 2, characterized in that: It also includes a pressure sensor, a flow rate sensor and an internal temperature and humidity sensor connected to the control module. The pressure sensor, the flow rate sensor and the internal temperature and humidity sensor are arranged on the outlet pipeline near the outlet.

4. The sleeping ventilator according to claim 1 or 3, characterized in that: The heating water tank includes a liquid storage box and a cover body, and the cover body is hinged to one side of the liquid storage box; the inlet pipe head and the outlet pipe head are both arranged on the cover body, and the outlet end of the inlet pipe head located in the cover body is bent toward the liquid storage box; the inlet pipe head and the outlet pipe head are located outside the cover body and have a first plug-in part, and the inlet pipe head and the outlet pipe head are respectively connected to the air inlet pipeline and the air outlet pipeline through the first plug-in part in a sealed manner; a heating plate is provided at the bottom of the liquid storage box, and the heating plate is adapted to the first heating module in the casing; the first heating module is connected to the control module.

5. The sleeping ventilator according to claim 4, characterized in that: An ultrasonic humidification module is also provided at the bottom of the liquid storage box. The ultrasonic humidification module is adapted to the ultrasonic energy supply module in the casing, and the ultrasonic energy supply module is connected to the control module.

6. The sleeping ventilator according to claim 4, characterized in that: It also includes a condensate collecting pipe, which is located in the casing, one end of which is connected to the bottom of the condensate collecting box, and the other end is provided with a second plug-in portion, and the second plug-in portion is located at the heating water tank installation position of the casing; a sealing interface is provided on the cover of the heating water tank and is adapted to the second plug-in portion; a liquid level sensor is provided in the condensate collecting box, and a fourth switch valve is provided on the condensate collecting pipe; the liquid level sensor and the fourth switch valve are both connected to the control module and are associated with each other.

7. A method for controlling air flow temperature and humidity, characterized in that: The sleep ventilator according to any one of claims 1 to 6 comprises the following steps: S100, start the sleeping ventilator, detect the ambient temperature and humidity, and select the operation step S200 or S300 according to the ambient humidity value; S200, when the ambient humidity value is less than the preset humidity value, the first switch valve and the second switch valve are opened, the third switch valve is closed, the heating water tank is started to be heated, the heating power of the heating water tank is adaptively controlled according to the ambient temperature value, and the booster motor is operated to provide compressed air; S300, when the ambient humidity value is greater than or equal to the preset humidity value, close the first switch valve and the second switch valve, open the third switch valve, and operate the boost motor and the thermoelectric refrigeration module at the same time, use the cold end of the thermoelectric refrigeration module to condense and dehumidify the compressed air in the refrigeration part, and use the hot end of the thermoelectric refrigeration module to reheat the compressed air in the heating part.

8. The method for controlling air flow temperature and humidity according to claim 7, characterized in that: The step S200 also includes: detecting the internal air flow humidity value and the internal air flow temperature value at the air outlet of the air outlet pipeline, and selecting to execute the step S210, S220, S230 or S240 according to the internal air flow humidity value and the internal air flow temperature value; S210, when the internal airflow humidity value is within the set output humidity value range, and the internal airflow temperature value is within the set output temperature value range, maintain the current operation; S220, when the internal air flow humidity value is within the set output humidity value range and the internal air flow temperature value is lower than the lower limit of the set output temperature value range, the second heating module on the air outlet pipeline is started to heat the compressed air so that the internal air flow temperature value is maintained within the set output temperature value range; S230, when the humidity value of the internal air flow is higher than the upper limit of the set output humidity value range, the third switch valve is opened at the same time, and the openings of the first switch valve and the third switch valve are controlled to maintain the humidity value of the internal air flow within the set output humidity value range; at this time, if the temperature value of the internal air flow is within the set output temperature value range, the current operation is maintained; if the temperature value of the internal air flow is lower than the lower limit of the set output temperature value range, the second heating module is started at the same time to heat the compressed air, so that the temperature value of the internal air flow is maintained within the set output temperature value range; S240, when the internal air flow humidity value is lower than the lower limit of the set output humidity value range, turn on the ultrasonic energy supply module to drive the ultrasonic humidification module in the heating water tank to perform ultrasonic humidification, so that the internal air flow humidity value is maintained within the set output humidity value range; at this time, if the internal air flow temperature value is within the set output temperature value range, maintain the current operation; if the internal air flow temperature value is lower than the lower limit of the set output temperature value range, then simultaneously start the second heating module to heat the compressed air, so that the internal air flow temperature value is maintained within the set output temperature value range.

9. The method for controlling air flow temperature and humidity according to claim 7 or 8, characterized in that: Step S300 also includes: detecting the internal air flow humidity value and the internal air flow temperature value at the air outlet of the air outlet pipeline, and adaptively adjusting the operating power of the thermoelectric refrigeration module according to the internal air flow humidity value, so that the internal air flow humidity value is maintained within the set output humidity value range; at this time, if the internal air flow temperature value is within the set output temperature value range, the current operation is maintained; if the internal air flow temperature value is lower than the lower limit of the set output temperature value range, the second heating module is simultaneously started to heat the compressed air, so that the internal air flow temperature value is maintained within the set output temperature value range.

10. The method for controlling air flow temperature and humidity according to claim 7, characterized in that: The method also includes step S400, in which the condensed water in the compressed air in the refrigeration unit is collected in a condensate collection box, and the liquid level value information in the condensate collection box is collected. When the liquid level value is greater than or equal to a preset liquid level value, the fourth switch valve on the condensate collection pipe is opened to discharge the condensate to the heating water tank; when the liquid level value is less than the preset liquid level value, the fourth switch valve is maintained closed.

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