Humidifier for a breathing apparatus and breathing apparatus

Abstract

The application provides a humidifier for a breathing machine and the breathing machine, and the humidifier for the breathing machine comprises a water tank body, a water tank bottom plate, a heating sheet and a humidifier base; the water tank body is provided with an air inlet and an air outlet at the top; the water tank bottom plate and the heating sheet are both arranged in the humidifier base, and the lower surface of the water tank bottom plate is in contact with the upper surface of the heating sheet; the water tank bottom plate is detachably connected with the bottom of the water tank body; the upper surface of the water tank bottom plate is vertically provided with a flow guide sheet, and the flow guide sheet is located in the water tank body. The application can avoid damaging the metal surface plating or coating due to the friction between the water tank bottom plate and the heating sheet, reduce the use cost of the breathing machine, improve the humidification efficiency and realize the noise reduction function.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a humidifier for a ventilator and a ventilator. Background Technology

[0002] The working principle of a humidifier for a ventilator is as follows: the heating device at the bottom of the humidifier heats the water in the humidification tank to promote water evaporation. When the air output from the ventilator passes through the humidification tank, it carries away the water vapor, thereby humidifying the air output from the ventilator.

[0003] There are three main design approaches for existing humidifiers used with ventilators: The first approach integrates the heating base with the main body of the ventilator, while a separate, detachable humidification tank is designed, with its bottom detachably connected to the heating base. The second approach uses a separate humidifier, consisting of a heating base and a humidification tank, with power adjusted via a control panel. The third approach separates the ventilator from the main body, designing the humidifier as a separate unit with a heating base and a separate humidification tank, its bottom detachably connected to the heating base. The common features of these three designs include: heating elements (such as heating plates or films) are attached to the heating plate inside the heating base, which is typically made of metal (often aluminum alloy); the humidification tank has a metal base plate at the bottom, allowing heat conduction through contact with the heating plate, which then heats the water within the tank.

[0004] A humidifier typically consists of an air inlet and an air outlet. Air from the ventilator enters the humidifier through the air inlet, is humidified, and then delivered to the patient through the air outlet. Humidifiers are usually used as consumables and are cleaned and disinfected routinely. They need to be replaced after a certain period of use.

[0005] Existing ventilators mainly use a split structure, where the heating base and humidification tank are two independent units. The tank base plate and heating plate are separate. To better conduct the heat generated by the heating element from the heating plate to the tank base plate, the heating plate and tank base plate must be tightly fitted together during operation to achieve good thermal conductivity. Therefore, the production process of the heating plate and tank base plate has high requirements for the flatness of their contact surfaces, resulting in high production costs. At the same time, since the tank base plate and heating plate are installed in different components, it is impossible to be absolutely certain that the tank base plate and heating plate are perfectly parallel when assembling the heating base and humidification tank. If an angle exists between the tank base plate and heating plate due to accumulated tolerances during assembly, the thermal conductivity will decrease significantly. In addition, during the installation and disassembly of the humidification tank, the inevitable friction between the tank base plate and heating plate will damage the metal surface plating or coating, which will also affect the flatness of the metal surface to some extent, leading to a decrease in thermal conductivity.

[0006] For humidification tanks, because the tank bottom plate is located at the bottom, only the water near the bottom plate can be directly heated. The heat exchange process within the humidification tank is relatively slow. When the tank contains a large amount of water, the surface temperature is relatively low, while the bottom temperature is relatively high. Water vapor mainly comes from the evaporation of liquid water on the surface, resulting in a relatively long time required to achieve the desired humidification effect in actual use. Furthermore, the humidification tank has a simple internal structure. Air enters through the inlet and flows along the inner wall to the outlet, resulting in a short path between the air and the water surface. Due to the large volume of the tank, the airflow velocity across the water surface is also relatively low, limiting the evaporation rate of liquid water and thus restricting the humidification efficiency to some extent. Summary of the Invention

[0007] In view of this, the object of the present invention is to provide a humidifier for a ventilator and a ventilator to alleviate the above-mentioned problems existing in the existing ventilators.

[0008] In a first aspect, embodiments of the present invention provide a humidifier for a ventilator, the humidifier for a ventilator comprising a water tank body, a water tank base plate, a heating element, and a humidifier base; the top of the water tank body is provided with an air inlet and an air outlet; the water tank base plate and the heating element are both disposed within the humidifier base, the lower surface of the water tank base plate being in contact with the upper surface of the heating element; the water tank base plate is detachably connected to the bottom of the water tank body; a guide vane is vertically disposed on the upper surface of the water tank base plate, the guide vane being located within the water tank body.

[0009] Secondly, embodiments of the present invention also provide a ventilator, the ventilator including the humidifier for a ventilator described in the first aspect above.

[0010] This invention provides a humidifier for a ventilator and a ventilator. The humidifier includes a water tank body, a water tank base plate, a heating element, and a humidifier base. The top of the water tank body is provided with an air inlet and an air outlet. The water tank base plate and the heating element are both disposed inside the humidifier base, with the lower surface of the water tank base plate in contact with the upper surface of the heating element. The water tank base plate is detachably connected to the bottom of the water tank body. A guide vane is vertically disposed on the upper surface of the water tank base plate, and the guide vane is located inside the water tank body. Using the above technology, since the lower surface of the water tank bottom plate is in contact with the upper surface of the heating element, there is no need for fitting and assembly between the water tank bottom plate and the heating element. This avoids damage to the metal surface plating or coating due to friction between the water tank bottom plate and the heating element. The water tank bottom plate is designed to be detachably connected to the bottom of the water tank body, making the cleaning operation of the water tank simpler and more convenient. When the water tank needs to be replaced, only the main body of the water tank needs to be replaced, reducing the operating cost of the ventilator. A guide vane is installed inside the water tank, which can directly heat the surface of the water in the tank, thereby rapidly increasing the evaporation rate of the liquid water on the surface and thus rapidly improving the humidification efficiency. The guide vane can also guide the airflow in the water tank, extending the airflow path and increasing the airflow rate. This can reduce air turbulence and vortices in the water tank while improving humidification efficiency, thus achieving noise reduction.

[0011] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0012] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0014] Figure 1 This is a perspective view of a humidifier for a ventilator in an embodiment of the present invention;

[0015] Figure 2 This is a three-dimensional exploded view of a humidifier for a ventilator in an embodiment of the present invention;

[0016] Figure 3 This is a top view of a humidifier for a ventilator in an embodiment of the present invention;

[0017] Figure 4 This is a cross-sectional view of a humidifier for a ventilator in an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of heat conduction in the water tank in an embodiment of the present invention;

[0019] Figure 6 This is a schematic diagram of the airflow trajectory inside the water tank in an embodiment of the present invention;

[0020] Figure 7 This is a schematic diagram of a humidifier for a ventilator matched with a dedicated ventilator in an embodiment of the present invention.

[0021] Icons: 1-Water tank body; 11-Air inlet; 12-Air outlet; 2-Humidifier base; 21-Adjustment button; 22-Gear indicator light; 23-Power indicator light; 24-Control panel; 25-Waterproof plug; 3-Heating element; 31-Temperature sensor; 32-Temperature fuse; 4-Water tank bottom plate; 41-Water tank bottom plate sealing ring; 42-Water tank sealing ring; 43-First fixing component; 44-Third fixing component; 5-Guide plate; 6-Insulation cotton; 7-Socket; 71-Socket sealing ring; 8-Water body; 9-Airflow; 10-Ventilator; 101-Air outlet interface; 102-Waterproof socket; 103-Mounting slot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] To facilitate understanding of this embodiment, a humidifier for a ventilator disclosed in this embodiment of the invention will first be described in detail. See [link to relevant documentation]. Figures 1 to 4 As shown, a humidifier for a ventilator may include a water tank body 1, a water tank base plate 4, a heating element 3, and a humidifier base 2; the top of the water tank body 1 is provided with an air inlet 11 and an air outlet 12; the water tank base plate 4 and the heating element 3 are both disposed inside the humidifier base 2, with the lower surface of the water tank base plate 4 in contact with the upper surface of the heating element 3; the water tank base plate 4 is detachably connected to the bottom of the water tank body 1; a guide vane 5 is vertically disposed on the upper surface of the water tank base plate 4, and the guide vane 5 is located inside the water tank body 1.

[0024] Among them, the heating element 3, the water tank bottom plate 4, and the guide plate 5 can all be made of materials with good thermal conductivity. Here, we will not limit the materials of the heating element 3, the water tank bottom plate 4, and the guide plate 5.

[0025] See Figure 5As shown, the guide vane 5 is connected to the bottom plate 4 of the water tank. Figure 5 The direction of heat conduction is indicated by the arrows. It can be seen that the heat emitted by the heating element 3 can be directly conducted from the bottom plate 4 of the water tank along the guide plate 5 to the surface of the water body 8 in the water tank, which can quickly increase the water temperature, promote the evaporation of liquid water on the surface, and improve the humidification efficiency.

[0026] See Figure 6 As shown, the guide vane 5 can guide the airflow 9 inside the water tank, making the path of the airflow over the water surface more concentrated, thereby increasing the speed of the airflow 9 on the water surface and improving the evaporation rate of liquid water on the water surface. The guide vane 5 can also lengthen the path of the airflow 9 in the water tank by guiding the airflow 9, reducing the turbulence and vortices generated by the airflow 9 in the water tank, reducing the noise of the airflow 9. At the same time, the design of the guide vane 5 also has a certain effect on noise attenuation.

[0027] This invention provides a humidifier for ventilators. Because the lower surface of the water tank base plate contacts the upper surface of the heating element, there is no need for assembly or fitting between the water tank base plate and the heating element, thus avoiding damage to the metal surface plating or coating due to friction between the water tank base plate and the heating element. The water tank base plate and the bottom of the water tank body are designed for detachable connection, making water tank cleaning simpler and more convenient. When the water tank needs to be replaced, only the main body of the water tank needs to be replaced, reducing the operating cost of the ventilator. A guide vane is installed inside the water tank, which can directly heat the water surface, thereby rapidly increasing the evaporation rate of liquid water and thus quickly improving humidification efficiency. The guide vane can also guide the airflow inside the water tank, extending the airflow path and increasing the airflow rate. This improves humidification efficiency while reducing air turbulence and vortices inside the water tank, achieving noise reduction.

[0028] See Figure 2 and Figure 4 As shown, a first fixing member 43 can be provided on the upper surface of the water tank bottom plate 4 around the edge of the water tank bottom plate 4; a first sealing groove is provided on the outer wall of the first fixing member 43, and a water tank sealing ring 42 is placed in the first sealing groove, with the water tank sealing ring 42 having an interference fit with the inner wall of the water tank body 1. With this design, the sealing between the first fixing member 43 and the water tank body 1 can be achieved through the water tank sealing ring 42, thereby realizing a detachable connection between the water tank bottom plate 4 and the bottom of the water tank body 1.

[0029] See Figure 2 and Figure 4As shown, a second fixing member can be provided on the upper surface of the water tank bottom plate 4 around the edge of the water tank bottom plate 4; the outer wall of the second fixing member is provided with a first thread, and the inner wall of the water tank body 1 is provided with a second thread that mates with the first thread. With this design, the second fixing member and the water tank body 1 can be sealed through the engagement between the first thread and the second thread, thereby achieving a detachable connection between the water tank bottom plate 4 and the bottom of the water tank body 1.

[0030] See Figure 2 and Figure 4 As shown, a third fixing member 44 can be provided around the edge of the water tank base plate 4 on the lower surface of the water tank base plate 4; a second sealing groove is provided on the outer wall of the third fixing member 44, and a water tank base plate sealing ring 41 is placed in the second sealing groove. The water tank base plate sealing ring 41 is interference-fitted with the inner wall of the humidifier base 2, and the bottom of the third fixing member 44 contacts the inner bottom wall of the humidifier base 2. With this design, the sealing between the third fixing member 44 and the humidifier base 2 can be achieved through the water tank base plate sealing ring 41, and the bottom of the third fixing member 44 can be supported by the inner bottom wall of the humidifier base 2, thereby realizing the detachable installation of the water tank base plate 4 inside the humidifier base 2, which facilitates the cleaning and maintenance of the water tank base plate 4.

[0031] See Figure 2 and Figure 4 As shown, the top of the guide vane 5 can be bent towards the inner wall of the water tank body 1 to form a guide edge. This design allows for further guidance of the airflow within the water tank via the guide edge, further extending the airflow path and thus increasing the airflow rate. It also further reduces air turbulence and vortices within the water tank, thereby further reducing noise within the tank.

[0032] See Figure 2 and Figure 4 As shown, there can be two guide vanes 5. One guide vane 5, whose vertical projection on the upper surface of the water tank bottom plate 4 corresponds to the vertical projection on the upper surface of the water tank bottom plate 4 corresponding to the air inlet 11, can be bent towards the vertical projection on the upper surface of the water tank bottom plate 4 corresponding to the air outlet 12. The vertical projection of each guide vane 5 on the upper surface of the water tank bottom plate 4 can be bent outward from the water tank bottom plate 4.

[0033] For example, the horizontal cross-section of each of the two guide vanes 5 can be set to a specific bending shape (such as an arc or a multi-segment line) that bends outward toward the bottom plate 4 of the water tank. The horizontal cross-section of one guide vane 5 bends toward the vertical projection of the air inlet 11 onto the upper surface of the bottom plate 4 of the water tank, and the horizontal cross-section of the other guide vane 5 bends toward the vertical projection of the air outlet 12 onto the upper surface of the bottom plate 4 of the water tank. This allows the airflow near the air inlet 11 and the air outlet 12 in the water tank to be guided by the two guide vanes 5 with different bending directions of their horizontal cross-sections. This can extend the airflow path, increase the airflow rate, reduce air turbulence and vortices in the water tank, and reduce noise in the water tank.

[0034] See Figure 2 and Figure 4 As shown, a temperature sensor 31 and a temperature fuse 32 can be installed on the lower surface of the heating element 3; a heat insulation cotton 6 can be installed inside the humidifier base 2 below the heating element 3; a control board 24 can be installed on the inner side wall of the humidifier base 2, and the control board 24 can be connected to the heating element 3 and the temperature sensor 31 respectively.

[0035] The control board 24 can be used to control the working state of the heating element 3 based on the temperature collected by the temperature sensor 31; the temperature fuse 32 can be used to control the heating element 3 to stop heating after the temperature of the heating element 3 exceeds a preset temperature threshold. For example, a target temperature value that the heating element 3 needs to reach can be preset for the control board 24. This target temperature value is usually less than the temperature threshold that triggers the temperature fuse 32 to control the heating element 3 to stop heating. When the temperature sensor 31 detects that the current temperature of the heating element 3 is less than the target temperature value, the control board 24 controls the heating element 3 to heat; when the temperature sensor 31 detects that the current temperature of the heating element 3 is not less than the target temperature value, the control board 24 controls the heating element 3 to stop heating; when the current temperature of the heating element 3 is not less than the temperature threshold, the temperature fuse 32 cuts off the heating circuit of the heating element 3 to control the heating element 3 to stop heating.

[0036] See Figure 1 , Figure 2 and Figure 4 As shown, the outside of the humidifier base 2 may be provided with a power indicator light 23 and at least one gear indicator light 22, as well as an adjustment button 21 corresponding to each gear indicator light 22; the control board 24 may be connected to the power indicator light 23, each gear indicator light 22, each adjustment button 21 and the power supply of the humidifier for the ventilator.

[0037] The control board 24 can be used to: control the indicator light 22 corresponding to the designated adjustment button 21 to light up when the user presses the designated adjustment button 21; and control the power indicator light 23 to light up when the power supply of the humidifier for the ventilator is normally supplying power to the humidifier for the ventilator.

[0038] In addition, the humidifier for ventilators can be set with at least one setting, each setting having a corresponding upper limit for heating temperature, an adjustment button 21, and a setting indicator light 22. When a user presses an adjustment button 21, the control board 24 controls the upper limit of the heating temperature of the heating element 3 to be the upper limit of the heating temperature of the setting corresponding to the adjustment button 21, and controls the setting indicator light 22 of the setting corresponding to the specified adjustment button 21 to light up.

[0039] See Figure 7 As shown, a waterproof socket 102 can be provided on the ventilator 10; a waterproof plug 25 can be provided on the outside of the humidifier base 2 for inserting into and cooperating with the waterproof socket 102. Figure 7 In the ventilator 10, an air outlet 101 is provided for engaging with the air inlet 11 on the water tank body 1, and a mounting groove 103 is provided for engaging with the humidifier base 2. A waterproof socket 102 is provided on the inner side wall of the mounting groove 103 for engaging with the waterproof plug 25 located on the outside of the humidifier base 2. When the ventilator needs to be used after the humidifier for the ventilator is assembled, the humidifier base 2 can be placed in the mounting groove 103, and the waterproof plug 25 can be inserted into the waterproof socket 102, and the air inlet 11 can be engaged with the position of the air outlet 101, so that the humidifier for the ventilator can be controlled by the control system of the main unit of the ventilator 10 after the ventilator is started.

[0040] For ease of understanding, the structure and working principle of the above-mentioned humidifier for ventilators will be described exemplarily below using a specific application as an example.

[0041] See Figures 1 to 4As shown, a humidifier for a ventilator may include a water tank body 1, a water tank base plate 4, a heating element 3, and a humidifier base 2. The top of the water tank body 1 is provided with an air inlet 11 and an air outlet 12. The water tank base plate 4 and the heating element 3 are both disposed within the humidifier base 2, with the lower surface of the water tank base plate 4 in contact with the upper surface of the heating element 3. A first fixing member 43 is provided around the edge of the water tank base plate 4 on the upper surface of the water tank base plate 4. An annular groove (i.e., a first sealing groove) is provided on the outer wall of the first fixing member 43, and an O-ring (i.e., a water tank sealing ring 42) is placed in the first sealing groove, with the water tank sealing ring 42 press-fitting against the inner wall of the water tank body 1. A third fixing member 44 is provided around the edge of the water tank base plate 4 on the lower surface of the water tank base plate 4. An annular groove (i.e., a second sealing groove) is provided on the outer wall of the third fixing member 44, and an O-ring (i.e., a water tank base plate sealing ring 41) is placed in the second sealing groove, with the water tank base plate sealing ring 41 press-fitting against the inner wall of the humidifier base 2. The bottom of the third fixing member 44 is in contact with the inner bottom wall of the humidifier base 2. Two metal guide vanes 5 are vertically arranged on the upper surface of the water tank base plate 4, and both guide vanes 5 are located inside the water tank body 1. The top of each guide vane 5 is bent towards the inner wall of the water tank body 1 to provide a guide edge. The horizontal cross section of one guide vane 5 is curved and bends towards the air inlet 11 corresponding to the vertical projection on the upper surface of the water tank base plate 4. The horizontal cross section of the other guide vane 5 is curved and bends towards the air outlet 12 corresponding to the vertical projection on the upper surface of the water tank base plate 4. The vertical projection of each guide vane 5 on the upper surface of the water tank base plate 4 is curved and bends towards the outer side of the water tank base plate 4. The lower surface of the heating element 3 is provided with a temperature sensor 31 and a temperature fuse 32. The heat insulation cotton 6 can be provided inside the humidifier base 2 below the heating element 3. The inner wall of the humidifier base 2 is provided with a control board 24 that is connected to the heating element 3 and the temperature sensor 31 respectively.

[0042] There are two control methods for ventilator humidifiers. The first method is to use the ventilator's control system to control the humidifier independently. The second method is to install the humidifier on a dedicated ventilator and use the ventilator's main control system to control the humidifier.

[0043] For the first control method, see [link / reference]. Figure 2 and Figure 4As shown, a power indicator light 23 is provided on the outside of the humidifier base 2. The humidifier for ventilators has five speed settings, each with its own upper limit for heating temperature (for example, the upper limits for heating temperature of the heating element 3 for the five speed settings are 50℃, 65℃, 80℃, 100℃, and 120℃, respectively). The outside of the humidifier base 2 also has a speed indicator light 22 and an adjustment button 21 for each speed setting. A socket mounting hole for installing a socket 7 is provided on the side wall of the humidifier base 2. A mounting groove is provided on the outer wall of the socket 7, and a socket sealing ring 71 is placed in the mounting groove. 71 is interference-fitted with the inner wall of the socket mounting hole; the socket 7 is detachably installed on the inner wall of the humidifier base 2 at the position corresponding to the socket mounting hole via the socket sealing ring 71; the control board 24 is connected to the power indicator 23, each gear indicator 22, each adjustment button 21 and the socket 7 respectively; the socket 7 is also connected to the power supply of the humidifier for the ventilator; after the user presses the adjustment button 21 corresponding to a certain gear, the control board 24 sets the upper limit of the heating temperature of the heating element 3 to the upper limit of the heating temperature corresponding to that gear, and controls the gear indicator 22 corresponding to that gear to light up.

[0044] For the second control method, see [link / reference]. Figure 7 As shown, the humidifier for ventilators has five settings. The ventilator 10, used in conjunction with the humidifier, has an air outlet 101 and a mounting slot 103. A waterproof socket 102 is located on the inner wall of the mounting slot 103. After assembling the humidifier, the humidifier base 2 can be placed in the mounting slot 103, the waterproof plug 25 (serving as a power interface) inserted into the waterproof socket 102, and the air inlet 11 aligned with the air outlet 101, thus installing the humidifier on the ventilator 10. The main unit of the ventilator 10 supplies power to the humidifier and interacts with it via a data interface. The ventilator 10 controls the humidifier through its control system. Specifically, the control method combines room temperature (Tr) and indoor air humidity (RH) to control the target temperature (Tc) of the heating element 3 according to the following formula:

[0045] Tc=K*80-n*(Tr-24℃)-g*100*(RH-80%)

[0046] Where K is the gear constant (the corresponding gear constant values ​​for the five gears on the main unit are 1.2, 1.4, 1.6, 1.8, and 2, respectively), n is the ambient temperature constant, and g is the humidity constant. For example, if Tr is 30℃, RH is 90%, n is 2, and g is 2.5, and the humidifier for the ventilator is set to five gears: 1, 2, 3, 4, and 5, the target temperature of the heating element 3 at gear 1 is Tc1 = 1.2*80 - 2*(30-24) - 2.5*100*(90%-80%) = 69℃, and the target temperature of the heating element 3 at gear 2 is Tc2 = 1.4*80 - 2*(30-24) - 2.5*100*(90%-80%) = 85℃. The target temperatures of the heating element 3 at gears 3, 4, and 5 can be calculated similarly.

[0047] In addition, in practical applications, threaded or snap-fit ​​connections can be used to achieve a detachable connection between the bottom plate 4 of the water tank and the bottom of the main body 1 of the water tank. The humidifier for the ventilator and the main unit of the ventilator 10 can also be connected by wires. The shape and number of the guide vanes 5 can be flexibly adjusted according to the actual situation.

[0048] Compared with existing technologies, the humidifier for ventilators provided in this invention has the following characteristics:

[0049] (1) The humidifier base and water tank are designed as a whole, integrating water storage and heating functions.

[0050] (2) A metal guide plate is installed on the bottom plate of the water tank. The guide plate has both heat conduction and flow guidance functions. The heat conduction function mainly guides the guide plate to conduct the heat of the bottom plate of the water tank to the water surface inside the water tank. The flow guidance function mainly guides the guide plate to reduce the cross-sectional area of ​​the air flow channel inside the water tank, thereby increasing the air flow velocity inside the water tank and lengthening the path of the airflow on the water surface inside the water tank.

[0051] (3) The guide vane is set to guide the airflow inside the water tank, reducing the concentration of the air path through the water surface, thereby increasing the airflow speed on the water surface and improving the evaporation rate of liquid water on the water surface.

[0052] (4) The baffle plate, by guiding the airflow inside the water tank, lengthens the airflow path within the tank (the airflow trajectory line inside the water tank can be found in [reference]). Figure 6 As shown in the figure, it reduces the turbulence and vortices generated by the airflow inside the water tank, which can reduce airflow noise. At the same time, the design of the guide vane also plays a certain role in noise attenuation.

[0053] (5) The guide plate is connected to the bottom plate of the water tank, allowing heat to be directly conducted from the bottom plate to the water surface inside the tank (see the section on heat conduction in water tanks). Figure 5As shown in the figure, it can quickly increase the water temperature on the water surface, promote the evaporation of liquid water on the water surface, and improve the humidification efficiency.

[0054] (6) The top of the humidifier base can also be fixed to the bottom of the water tank body with screws, and the specific connection position is sealed and waterproofed with a sealing ring. The power interface uses a waterproof plug with a high waterproof rating, and the entire humidifier base can be cleaned daily.

[0055] (7) The humidifier base and the water tank body can be detached. When the water tank needs to be replaced, only the water tank body needs to be replaced, which reduces the cost of use.

[0056] (8) The humidifier for ventilators can be used with most ventilators on the market via a hose, or with a dedicated ventilator via a special bend.

[0057] (9) The humidifier for ventilators can achieve heating temperature control through its own control system or through the control system of a dedicated ventilator. The control method can be flexibly selected according to actual usage needs.

[0058] As mentioned above Figures 1 to 6 As shown, the humidifier for ventilators involved in this invention mainly consists of a humidifier base 2, a heating element 3, a guide vane 5, a water tank base plate 4, and a water tank body 1. When the humidifier base 2 is powered on, the heat generated by the heating element 3 is directly transferred to the water in the water tank through the water tank base plate 4 and the guide vane 5 for heating. The bottom of the heating element 3 is insulated from heat dissipation by heat insulation cotton 6. When the water tank needs to be cleaned, the entire water tank base plate assembly (including the guide vane 5 and the water tank base plate 4) can be pulled out, and then the water tank body 1 and the water tank base plate assembly can be cleaned separately, making the operation very simple. When the water tank needs to be replaced as a consumable, only the water tank body 1 can be replaced, and if necessary, the sealing ring can also be replaced, which greatly reduces the operating cost of the ventilator.

[0059] Compared with existing technologies, the humidifier for ventilators provided in this invention has the following advantages: The humidifier can be used independently (e.g., by connecting the ventilator outlet and humidifier inlet with a flexible hose, and then connecting the humidifier outlet to the mask via a breathing tube to humidify the airflow output by the ventilator), or it can be used with a dedicated ventilator (e.g., by connecting the humidifier inlet and ventilator outlet with a bent pipe, and connecting the waterproof plug on the humidifier base to the waterproof socket on the ventilator main unit, simultaneously enabling power supply and data interaction, allowing the ventilator to control the humidifier). The separate water tank bottom plate method found in existing technologies is eliminated; the heat generated by the heating element is directly conducted to the water in the tank through the water tank bottom plate and guide vanes, reducing heat loss during heat transfer. This also lowers the precision requirements for heating element processing and reduces production difficulty. Since there is no need for the water tank bottom plate and heating element to be fitted and assembled, friction between them during use is avoided, thus mitigating some potential risks. The humidifier base is entirely waterproof for easy daily cleaning. The water tank and humidifier base are easily detachable, and the water tank can be replaced separately, reducing replacement costs. The detachable design of the water tank and base makes cleaning the tank simpler and more convenient; when replacing the tank, only the water tank body needs to be replaced, reducing the operating cost of the ventilator. An air guide vane is installed inside the water tank, which directly heats the water near the surface, rapidly increasing the evaporation rate of the liquid water and thus improving humidification efficiency. The air guide vane also guides the airflow within the tank, reducing airflow dispersion, increasing airflow speed, and lengthening the airflow path. This improves humidification efficiency while reducing air turbulence and vortices, achieving noise reduction. The air guide vane also helps attenuate noise within the water tank, optimizing the overall operating noise of the device. In addition, when the humidifier for ventilators is connected to an external power source or to the power interface of other devices, the humidifier for ventilators can be used independently as a heating and humidifying device for other respiratory instruments such as portable oxygen concentrators and home oxygen concentrators.

[0060] Based on the above-mentioned humidifier for ventilators, embodiments of the present invention also provide a ventilator that may include the above-mentioned humidifier for ventilators.

[0061] Since the ventilator provided in this embodiment of the invention includes all the technical features of the humidifier for ventilators described above, the technical effects produced by the ventilator can be referred to the technical effects produced by the humidifier for ventilators described above, and will not be repeated here.

[0062] Unless otherwise specifically stated, the relative steps, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0063] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0064] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0065] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A humidifier for a ventilator, characterized in that, The humidifier for the ventilator includes a water tank body, a water tank base plate, a heating element, and a humidifier base; the top of the water tank body is provided with an air inlet and an air outlet; the water tank base plate and the heating element are both disposed within the humidifier base, with the lower surface of the water tank base plate contacting the upper surface of the heating element; the water tank base plate is detachably connected to the bottom of the water tank body; a first fixing member is provided around the edge of the water tank base plate on the upper surface of the water tank base plate; a first sealing groove is provided on the outer wall of the first fixing member, and a water tank sealing ring is placed in the first sealing groove, the water tank sealing ring being press-fitted with the inner wall of the water tank body; two guide vanes are vertically disposed on the upper surface of the water tank base plate, the guide vanes being located within the water tank body; the guide vanes... The heat emitted by the heating element and conducted through the bottom plate of the water tank is transferred to the surface of the water in the main body of the water tank and guides the airflow inside the main body of the water tank. The top of the guide plate is bent towards the inner wall of the main body of the water tank and has a guide edge. One guide plate is bent towards the vertical projection of the air inlet onto the vertical projection of the air outlet ... The ventilator is provided with an air outlet for cooperating with the air inlet and a mounting slot for cooperating with the humidifier base; a waterproof plug is provided on the outer side of the humidifier base; a waterproof socket is provided on the inner side wall of the mounting slot for cooperating with the waterproof plug; the waterproof plug is used to insert into the waterproof socket and cooperate with the waterproof socket. After placing the humidifier base in the mounting slot, inserting the waterproof plug into the waterproof socket, and aligning the air inlet with the air outlet, the ventilator's control system, in conjunction with room temperature and indoor air humidity, controls the target temperature to be achieved by the heating element according to the following formula: Where Tc is the target temperature, K is the gear constant of the humidifier for the ventilator at the corresponding gear setting, n is the ambient temperature constant, Tr is the room temperature, g is the humidity constant, and RH is the indoor air humidity.

2. The humidifier for a ventilator according to claim 1, characterized in that, A second fixing member is provided on the upper surface of the bottom plate of the water tank around the edge of the bottom plate; a first thread is provided on the outer side wall of the second fixing member, and a second thread is provided on the inner side wall of the water tank body to cooperate with the first thread.

3. The humidifier for a ventilator according to claim 1, characterized in that, A third fixing member is provided on the lower surface of the water tank bottom plate around the edge of the water tank bottom plate; a second sealing groove is provided on the outer wall of the third fixing member, and a water tank bottom plate sealing ring is placed in the second sealing groove. The water tank bottom plate sealing ring is interference-fitted with the inner side wall of the humidifier base, and the bottom of the third fixing member is in contact with the inner bottom wall of the humidifier base.

4. The humidifier for a ventilator according to claim 1, characterized in that, A temperature sensor and a temperature fuse are provided on the lower surface of the heating element; heat insulation cotton is provided inside the humidifier base below the heating element; a control board is provided on the inner side wall of the humidifier base, and the control board is connected to the heating element and the temperature sensor respectively; the control board is used to control the working state of the heating element based on the temperature of the heating element collected by the temperature sensor; the temperature fuse is used to control the heating element to stop heating when the temperature of the heating element exceeds a preset temperature threshold.

5. The humidifier for a ventilator according to claim 4, characterized in that, The humidifier base is equipped with a power indicator light and at least one gear indicator light, as well as an adjustment button corresponding to each gear indicator light. The control board is connected to the power indicator light, each gear indicator light, each adjustment button, and the power supply of the humidifier for the ventilator.

6. A ventilator, characterized in that, The ventilator includes a humidifier for a ventilator as described in any one of claims 1 to 5.

Images