A combination ventilator

Abstract

This utility model relates to a modular ventilator, comprising a main unit, a heating component, and a water tank assembly. The main unit and the heating component are detachably connected via electrical terminals, and the heating component and the water tank assembly are detachably connected via a snap-fit ​​and snap-fit ​​slot unit. Additionally, another snap-fit ​​and snap-fit ​​slot unit is included to prevent the main unit from detaching from the heating component. This utility model is easy to carry and use, especially suitable for outdoor use. It also facilitates user disassembly, cleaning, and maintenance of the water tank, reducing bacterial growth. Furthermore, the modular structure supports functional expansion, allowing users to replace or upgrade components as needed, thus broadening its applicability.

Description

Technical Field

[0001] This utility model relates to the field of home ventilator technology, and in particular to a combined ventilator. Background Technology

[0002] Continuous positive airway pressure (CPAP) is a non-invasive ventilation device that maintains airway patency by providing a continuous positive airflow throughout the respiratory cycle. It is widely used to treat sleep apnea syndrome, improve lung function, and assist in postoperative rehabilitation.

[0003] CPAP mainly includes a main unit for providing a continuous and stable positive pressure airflow and a humidifier assembly for increasing the humidity of the delivered air. The humidifier assembly includes a heating unit and a humidification tank. The heating unit heats the water in the humidification tank to promote water evaporation. When the pressurized air output from the main unit passes through the humidification tank, it carries away the water vapor, thereby humidifying the gas output from the main unit.

[0004] In the prior art, the outer wall of the housing described in Chinese Patent (CN213220180U) is fixedly connected with multiple hooks. The hooks are located on one side of the guide post. The outer wall of the ventilator body is provided with multiple slots for the hooks to be engaged. By engaging the multiple hooks in the corresponding slots, the humidifier is fixed on the ventilator body.

[0005] However, the connection between this integrated humidifier and the main unit lacks flexibility, preventing users from individually replacing or upgrading the heating unit or humidification tank. Maintenance and cleaning are also more complex, potentially requiring more time and effort. Furthermore, the integrated design limits functional expansion, increases the device's size and weight, and impacts portability. Condensation issues may also occur under large temperature variations, affecting device performance and lifespan, and repair costs are high should any components fail. Utility Model Content

[0006] Therefore, the purpose of this utility model is to overcome the defects or deficiencies of the prior art and provide a combined ventilator.

[0007] A combined ventilator includes: a main unit, a heating component, and a water tank component, wherein the main unit and the heating component are detachably connected, and the heating component and the water tank component are detachably connected.

[0008] The host has a host connection side plate on one side, and a first wire terminal is provided on the host connection side plate.

[0009] The heating component includes a heating component base and a second wire terminal disposed within the heating component base; the second wire terminal and the first wire terminal are connected by a plug-in connection to achieve a detachable connection between the heating component and the main unit;

[0010] The heating assembly further includes a second connecting side plate disposed on the base of the heating assembly. A second buckle module is disposed on the second connecting side plate. The second buckle module includes a second movable block, a second buckle disposed on the second movable block, and a second return spring that abuts against the second connecting side plate and the second movable block respectively. The second movable block slides on the second connecting side plate under the action of the second return spring and drives the second buckle to move.

[0011] The water tank assembly includes a second snap-fit ​​slot disposed thereon, the second snap-fit ​​slot cooperating with the second snap to achieve locking and unlocking between the heating assembly and the water tank assembly.

[0012] Compared to existing technologies, the modular ventilator provided by this invention is easy to carry and use, especially suitable for carrying when going out. It also makes it convenient for users to disassemble, clean and maintain the water tank, reducing bacterial growth. In addition, the modular structure supports functional expansion, and users can replace or upgrade components as needed, making it applicable to a wider range of scenarios.

[0013] In one embodiment, the second latching module further includes a second fixing unit; the second fixing unit includes a third fixing block and a fourth fixing block fixedly disposed on the second connecting side plate, the second reset spring abuts against the second connecting side plate by abutting against the third fixing block, and the fourth fixing block is used to restrict the movement path of the second movable block;

[0014] The second movable block is provided with a second through hole, and the fourth fixed block is disposed in the second through hole; by changing the shape of the second through hole and the position of the fourth fixed block on the second connecting side plate, the movement path of the second movable block on the second connecting side plate can be changed.

[0015] In one embodiment, the second fixing unit is positioned such that the angle between the extension / retraction direction of the second reset spring and the movement direction of the second movable block is acute, and in a stationary state, the second reset spring is in a stretched state, and the second movable block is subjected to a thrust at its original position.

[0016] In one embodiment, the first wire terminal is a socket-type structure, and the second wire terminal is a plug-type structure; the second wire terminal has protruding metal contact points, and the first wire terminal has corresponding sockets.

[0017] In one embodiment, the host connecting side plate further includes a first latching groove and a first latching module; the first latching module includes a first movable block, a first latch disposed on the first movable block, and a first return spring that abuts against the host connecting side plate and the first movable block respectively; the first movable block slides on the host connecting side plate under the action of the first return spring, and drives the first latch to slide in the first latching groove;

[0018] The heating assembly further includes a first connecting side plate disposed on the base of the heating assembly, and the first connecting side plate further includes a third buckle, which can cooperate with a first buckle groove on the main unit connecting side plate.

[0019] Under the action of the first reset spring, the first buckle cooperates with the third buckle in the first buckle groove to lock and unlock the heating component and the main unit.

[0020] In one embodiment, the first latching module further includes a first fixing unit; the first fixing unit includes a first fixing block and a second fixing block fixedly disposed on the host connection side plate, the first reset spring abuts against the host connection side plate by abutting against the first fixing block, and the second fixing block is used to restrict the movement path of the first movable block;

[0021] The first movable block is provided with a first through hole, and the fourth fixed block is disposed in the first through hole; by changing the shape of the first through hole and the position of the second fixed block on the host connection side plate, the movement path of the first movable block on the host connection side plate can be changed.

[0022] In one embodiment, the setting position of the first fixing unit satisfies the following: the angle between the extension and retraction direction of the first reset spring and the movement direction of the first movable block is an acute angle, and in the stationary state, the state of the first reset spring is the stretched state, and the first movable block is subjected to a pushing force at its original position, so that the first buckle is engaged in the first buckle groove.

[0023] In one embodiment, the second latching module further includes a second operating part fixedly connected to the second movable block, the second operating part being used to apply an external force to the second movable block;

[0024] The first latching module further includes a first operating part fixedly connected to the first movable block, the first operating part being used to apply an external force to the first movable block.

[0025] In one embodiment, the host further includes a host housing, a first air inlet and a first air outlet disposed on the host housing, and an air duct module disposed inside the host housing. The air duct module is connected to the first air inlet and the first air outlet respectively, and the first air outlet is disposed on the host connection side plate.

[0026] The first connecting side plate further includes a first airflow hole; the first airflow hole can be connected to the first air outlet; the second connecting side plate further includes a second airflow hole; the second airflow hole can be connected to the first airflow hole.

[0027] The water tank assembly further includes an open water storage tank and an airflow chamber covering the water storage tank. The airflow chamber includes a second air inlet and a second air outlet on the airflow chamber, and an air inlet pipe inside the airflow chamber. The second air inlet can be connected to the second airflow hole. One end of the air inlet pipe is connected to the second air inlet, and the other end is close to the bottom inner side of the water storage tank to guide positive pressure airflow into the water. The second snap-fit ​​slot is provided on the airflow chamber.

[0028] When the air duct module is working, it drives external air to flow into the air duct module through the first air inlet. Under the action of the air duct module, the external air is subjected to a certain pressure and then flows out of the main unit through the first air outlet, thereby obtaining a positive pressure airflow. The positive pressure airflow flows sequentially through the first air passage, the second air passage, the second air inlet, and the long air inlet pipe into the water storage tank, carrying water vapor, and then flows out from the second air outlet, thereby obtaining a humidifying positive pressure airflow.

[0029] In one embodiment, when the first wire terminal and the second wire terminal are connected, the first air outlet is connected to the first airflow hole; when the second buckle and the second buckle groove are engaged and connected, the second air outlet is connected to the second airflow hole.

[0030] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0031] Figure 1 This is a schematic diagram showing the assembly of the components in this utility model;

[0032] Figure 2 This is a schematic diagram of the main unit in this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the host connecting side plate in this utility model;

[0034] Figure 4 This is a schematic diagram of the heating component in this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the second connecting side plate in this utility model.

[0036] Figure 6 This is a schematic diagram of the water tank assembly in this utility model;

[0037] Figure 7 This is an exploded structural diagram of the water tank assembly in this utility model;

[0038] Figure 8 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;

[0039] Figure 9 for Figure 8 A schematic diagram of the structure within range C shown;

[0040] Figure 10 Book Figure 1 A schematic diagram of the cross-sectional structure along the BB direction. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings.

[0042] like Figure 1 As shown, a combined ventilator of this utility model includes a main unit 100, a heating component 200, and a water tank component 300. The main unit 100 and the heating component 200 can be detachably connected, and the heating component 200 and the water tank component 300 can also be detachably connected.

[0043] like Figure 2 As shown, the host unit 100 is used to provide a continuous and stable positive pressure airflow. Specifically, it includes a host housing 110, a first air inlet 120 and a first air outlet 130 disposed on the host housing 110, and a duct module (not shown), a first electrical component (not shown), and a first wire terminal (not shown) disposed inside the host housing 110. The duct module is connected to the first air inlet 120 and the first air outlet 130 respectively. The first electrical component is connected to an external power source (not shown), the duct module, and the first wire terminal respectively. Under the action of the external power source and the first electrical component, the duct module works, driving external air to flow into the duct module through the first air inlet 120. Under the action of the duct module, the external air is subjected to a certain pressure, and then flows out of the host unit 100 through the first air outlet 130, thereby obtaining a positive pressure airflow.

[0044] The main unit housing 110 has a main unit connection side plate 111 on one side. The main unit connection side plate 111 includes a first through groove 1111 for accommodating the first wire terminal, a first snap-fit ​​groove 1112, a first snap-fit ​​module 1113, and a first air outlet 130.

[0045] like Figure 3 As shown, the first latching module 1113 includes a first fixing unit 11131 fixedly mounted on the host connection side plate 111, a first movable block 11132 sliding on the host connection side plate 111, a first reset spring 11133, a first operating part 11134, and a first latch 11135.

[0046] In this embodiment, the first snap-fit ​​groove 1112 is provided along the edge of the first air outlet 130.

[0047] The first fixing unit 11131 includes a first fixing block 11131A and a second fixing block 11131B fixedly disposed on the host connection side plate 111. The first fixing block 11131A is used to fix one end of the first reset spring 11133, and the second fixing block 11131B is used to restrict the movement path of the first movable block 11132 on the host connection side plate 111.

[0048] One end of the first reset spring 11133 is fixedly connected to the first fixed block 11131A, and the other end is fixedly connected to the first movable block 11132.

[0049] The first operating part 11134 and the first buckle 11135 are fixedly disposed on the first movable block 11132. The sliding of the first movable block 11132 on the host connection side plate 111 allows the first buckle 11135 to slide within the first buckle groove 1112.

[0050] Specifically, the first movable block 11132 has a first through hole 11132A, and the second fixed block 11131B is disposed in the first through hole 11132A; by changing the shape of the first through hole 11132A and the position of the second fixed block 11131B on the host connection side plate 111, the movement path of the first movable block 11132 on the host connection side plate 111 can be changed.

[0051] Specifically, when the first fixing unit 11131 is positioned such that the angle between the extension / retraction direction of the first reset spring 11133 and the movement direction of the first movable block 11132 is an acute angle, in the static state, the first reset spring 11133 is in a stretched state, and the first movable block 11132 is subjected to a pushing force at its original position.

[0052] Specifically, when the first fixing unit 11131 is positioned such that the angle between the extension / retraction direction of the first reset spring 11133 and the movement direction of the first movable block 11132 is an obtuse angle, the first reset spring 11133 is compressed in a stationary state, and the first movable block 11132 is subjected to a thrust at its original position.

[0053] In this embodiment, in order to reduce the size of the device, the first fixing unit 11131 is positioned such that the angle between the extension and retraction direction of the first reset spring 11133 and the movement direction of the first movable block 11132 is an acute angle. In the stationary state, the first reset spring 11133 is in a stretched state, the first movable block 11132 is subjected to a pushing force at its original position, and the first buckle 11135 is engaged in the first buckle groove 1112.

[0054] This application does not restrict the air duct module or the first electrical component inside the host 100, as long as the air duct module and the first electrical component work together with the first air inlet 120 and the first air outlet 130 on the outer casing 110 of the host 100 to continuously output positive pressure airflow.

[0055] like Figure 4 As shown, the heating component 200 is used to provide heat to the water in the water tank assembly 300. Specifically, it includes a heating component base 210, a first connecting side plate 220 and a second connecting side plate 230 disposed on the heating component base 210, and a second electrical component (not shown) and a second wire terminal 240 disposed in the heating component base 210. The second electrical component and the second wire terminal 240 are connected. The heating component 200 is detachably connected to the main unit 100 through the first connecting side plate 220 and detachably connected to the water tank assembly 300 through the second connecting side plate 230.

[0056] The first connecting side plate 220 is provided with a first airflow hole 221, a third buckle 222 and a second through groove 223 for connecting the first wire terminal and the second wire terminal 240; the first airflow hole 221 is connected to the first air outlet 130, and the third buckle 222 can cooperate with the first buckle groove 1112 on the main unit connecting side plate 111.

[0057] Specifically, the first wire terminal and the second wire terminal 240 can be connected to conduct electricity; in this embodiment, the first wire terminal and the second wire terminal 240 are plug-in connected, the first wire terminal is a socket structure, and the second wire terminal 240 is a plug structure; the second wire terminal 240 has protruding metal contact points, and the first wire terminal has corresponding sockets; when the second wire terminal 240 is inserted into the first wire terminal, the metal contact points contact the metal pieces inside the first wire terminal to achieve electrical connection; when the first wire terminal and the second wire terminal 240 are connected, the first air outlet 130 is connected to the first airflow hole 221.

[0058] The third buckle 222 is a protrusion fixedly installed on the first connecting side plate 220. When the protrusion is installed in the first buckle groove 1112, the first air passage 221 is connected to the first air outlet 130.

[0059] In this embodiment, the third buckle 222 is disposed on the edge of the first airflow hole 221, and correspondingly, the first buckle groove 1112 is disposed on the edge of the first air outlet.

[0060] The second connecting side plate 230 is provided with a second air passage 231 and a second buckle module 232; the second air passage 231 is connected to the first air passage 221.

[0061] like Figure 5 As shown, the second latching module 232 includes a second fixing unit 2321 fixedly mounted on the second connecting side plate 230, a second movable block 2322 sliding on the second connecting side plate 230, a second reset spring 2323, a second operating part 2324, and a second latch 2325.

[0062] The second fixing unit 2321 includes a third fixing block 2321A and a fourth fixing block 2321B fixedly disposed on the second connecting side plate 230. The third fixing block 2321A is used to fix one end of the second reset spring 2323, and the fourth fixing block 2321B is used to restrict the movement path of the second movable block 2322 on the second connecting side plate 230.

[0063] One end of the second return spring 2323 is fixedly connected to the third fixed block 2321A, and the other end is fixedly connected to the second movable block 2322;

[0064] The second operating part 2324 and the second buckle 2325 are fixedly disposed on the second movable block 2322. The sliding of the second movable block 2322 on the second connecting side plate 230 allows the second buckle 2325 to slide within the groove of the second buckle 2325.

[0065] Specifically, the second movable block 2322 has a second through hole 2322A, and the fourth fixed block 2321B is disposed in the second through hole 2322A; by changing the shape of the second through hole 2322A and the position of the fourth fixed block 2321B on the second connecting side plate 230, the movement path of the second movable block 2322 on the second connecting side plate 230 can be changed.

[0066] Specifically, when the second fixing unit 2321 is positioned such that the angle between the extension / retraction direction of the second reset spring 2323 and the movement direction of the second movable block 2322 is an acute angle, the second reset spring 2323 is in a stretched state in a stationary state, and the second movable block 2322 is subjected to a pushing force at its original position.

[0067] Specifically, when the second fixing unit 2321 is positioned such that the angle between the extension / retraction direction of the second reset spring 2323 and the movement direction of the first movable block 11132 is an obtuse angle, the second reset spring 2323 is compressed in a stationary state, and the second movable block 2322 is subjected to a thrust at its original position.

[0068] In this embodiment, in order to reduce the size of the device, the second fixing unit 2321 is positioned such that the angle between the extension and retraction direction of the second reset spring 2323 and the movement direction of the second movable block 2322 is an acute angle, and in the stationary state, the second reset spring 2323 is in a stretched state, and the second movable block 2322 is subjected to a pushing force at its original position.

[0069] like Figure 4 As shown, further, in order to reduce the airflow velocity after the positive pressure airflow enters the water tank assembly 300 from the host 100, a first fence 260 is also provided between the first connecting side plate 220 and the second connecting side plate 230. The first fence 260 is also provided outside the first airflow hole 221 and the second airflow hole 231. The first fence 260, the first connecting side plate 220 and the second connecting side plate 230 form an airflow chamber, and the first airflow hole 221 and the second airflow hole 231 are staggered.

[0070] Furthermore, to ensure the airflow from the host 100 to the heating component 200 is sealed, a first sealing element (not shown) is provided at the connection between the first airflow hole 221 and the first air outlet 130; the first sealing element can be a rubber ring, etc.; and a second sealing element (not shown) is provided at the connection between the first airflow hole 221 and the second airflow hole 231; the second sealing element can be a rubber ring, etc.

[0071] In this embodiment, the second electrical component generates heat via an electric heating wire. The second electrical component includes a heating tube (not shown). When an external current passes through the heating wire inside the heating tube, heat is generated. Further, to protect the heating tube, a first heat-conducting sheet 250 is included. The first heat-conducting sheet 250 is disposed on the heating component base, and the heating tube is disposed below the first heat-conducting sheet 250. Further, a heating plate spring (not shown) is included to tightly attach the heating tube to the first heat-conducting sheet 250, ensuring efficient heat conduction. Further, a temperature sensor (not shown) and a heating tube plate (not shown) are included to control the power supply and temperature regulation of the heating tube. The heating tube plate adjusts the power of the heating tube through a control circuit based on feedback from the temperature sensor, maintaining the temperature of the first heat-conducting sheet 250 within a set range. The temperature sensor can be disposed on the first heat-conducting sheet 250 or integrated into the heating tube plate.

[0072] like Figures 6 to 7 As shown, the water tank assembly 300 includes an open water storage chamber 310 and an airflow chamber 320 covering the water storage chamber 310. The water storage chamber 310 and the airflow chamber 320 form a sealed water vapor space. The positive pressure airflow flowing out through the first airflow hole 221 enters the airflow chamber 320 and the water storage chamber 310 in sequence, carrying water vapor, and then flows out through the airflow chamber 320. It also includes a second heat-conducting plate 330 disposed on the outer side of the bottom of the water storage chamber 310. When the heating component 200 is connected to the water tank assembly 300, the second electrical component in the heating component 200 works and generates heat, which is then transferred to the water in the water storage chamber 310 through the first heat-conducting plate 250 and the second heat-conducting plate 330, thereby heating the water in the water storage chamber 310.

[0073] The airflow chamber 320 includes a second air inlet 321, a second air outlet 322, and a second snap-fit ​​groove 323 disposed on the airflow chamber 320, and an air intake pipe 324 disposed within the airflow chamber 320. The second air inlet 321 is connected to the second airflow hole 231; the second snap-fit ​​groove 323 can be connected to the second snap-fit ​​module 232; one end of the air intake pipe 324 is connected to the second air inlet 321, and the other end is close to the bottom inner side of the water storage tank 310 to introduce positive pressure airflow into the water; the positive pressure airflow enters the water storage tank 310 through the second air inlet 321 and the air intake pipe 324, carries water vapor, and flows out from the second air outlet 322, thereby obtaining a humidifying positive pressure airflow.

[0074] Furthermore, in order to improve the sealing performance of the water tank assembly 300, a third sealing element 340 is provided at the connection between the water storage chamber 310 and the airflow chamber 320. The third sealing element 340 can be a rubber ring or the like.

[0075] like Figures 8 to 9 As shown, the locking connection process between the host 100 and the heating component 200 is as follows: In a static state, the first movable block 11132 is pushed at its original position. The first buckle 11135 is disposed in the first buckle groove 1112. A certain external force is applied to the first operating part 11134, causing the first operating part 11134 to drive the first buckle 11135 and the first movable block 11132 to move, causing the first buckle 11135 to move away from the first buckle groove 1112, aligning and inserting the third buckle 222 into the first buckle groove 1112. Then, the external force applied to the first operating part 11134 is withdrawn. Under the action of the first return spring 11133, the first movable block 11132 drives the first buckle 11135 and the first operating part 11134 to move towards their original positions, thereby achieving the locking of the first buckle 11135 and the third buckle 222 in the first buckle groove 1112.

[0076] like Figure 10 As shown, the locking connection process between the heating component 200 and the water tank component 300 is as follows: A certain external force is applied to the second operating part 2324, causing the second operating part 2324 to drive the second buckle 2325 and the second movable block 2322 to move. At this time, the second return spring 2323 is in a further stretched state, aligning the second buckle 2325 and inserting it into the second buckle slot 323. Then, the external force applied to the second operating part 2324 is withdrawn. Under the action of the second return spring 2323, the second movable block 2322 drives the second buckle 2325 and the second operating part 2324 to move towards their original positions, thereby achieving the locking between the second buckle 2325 and the second buckle slot 323.

[0077] Furthermore, in order to improve the locking force between the second latch groove 323 and the second latch 2325, a fourth latch 325 is also provided in the second latch groove 323. Under the action of the second return spring 2323, the fourth latch 325 and the second latch 2325 can be locked together in the second latch groove 323.

[0078] Compared to existing technologies, the modular ventilator provided by this invention is easy to carry and use, especially suitable for carrying when going out. It also makes it convenient for users to disassemble, clean and maintain the water tank, reducing bacterial growth. In addition, the modular structure supports functional expansion, and users can replace or upgrade components as needed, making it applicable to a wider range of scenarios.

[0079] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments and claims of this application are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that, unless otherwise stated, “a plurality” means two or more; the terms “first,” “second,” “third,” etc., are used only to distinguish and not to describe a particular order or sequence, nor should they be construed as indicating or implying relative importance. The term “and / or” as used herein refers to and includes any or all possible combinations of one or more associated listed items. When the above description relates to drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. In the description of this application, those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0080] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A combined ventilator, characterized in that, include: The unit comprises a main unit, a heating element, and a water tank assembly, wherein the main unit and the heating element are detachably connected, and the heating element and the water tank assembly are detachably connected. The host has a host connection side plate on one side, and a first wire terminal is provided on the host connection side plate. The heating component includes a heating component base and a second wire terminal disposed within the heating component base; the second wire terminal and the first wire terminal are connected by a plug-in connection to achieve a detachable connection between the heating component and the main unit; The heating assembly further includes a second connecting side plate disposed on the base of the heating assembly. A second latching module is disposed on the second connecting side plate. The second latching module includes a second movable block, a second latch disposed on the second movable block, and a second return spring that abuts against the second connecting side plate and the second movable block respectively. The second movable block slides on the second connecting side plate under the action of the second return spring and drives the second latch to move. The water tank assembly includes a second snap-fit ​​slot disposed thereon, the second snap-fit ​​slot cooperating with the second snap to achieve locking and unlocking between the heating assembly and the water tank assembly.

2. The combined ventilator according to claim 1, characterized in that: The second buckle module further includes a second fixing unit; the second fixing unit includes a third fixing block and a fourth fixing block fixedly disposed on the second connecting side plate, the second reset spring abuts against the second connecting side plate by abutting against the third fixing block, and the fourth fixing block is used to restrict the movement path of the second movable block; The second movable block is provided with a second through hole, and the fourth fixed block is disposed in the second through hole; by changing the shape of the second through hole and the position of the fourth fixed block on the second connecting side plate, the movement path of the second movable block on the second connecting side plate can be changed.

3. The combined ventilator according to claim 2, characterized in that, The location of the second fixed unit satisfies: The angle between the extension / retraction direction of the second reset spring and the movement direction of the second movable block is an acute angle. In the stationary state, the second reset spring is in a stretched state, and the second movable block is subjected to a pushing force at its original position.

4. The combined ventilator according to any one of claims 1 to 3, characterized in that: The first wire terminal is a socket type structure, and the second wire terminal is a plug type structure; the second wire terminal has protruding metal contact points, and the first wire terminal has corresponding sockets.

5. The combined ventilator according to claim 4, characterized in that: The host connecting side plate further includes a first latching groove and a first latching module; the first latching module includes a first movable block, a first latch disposed on the first movable block, and a first return spring that abuts against the host connecting side plate and the first movable block respectively; the first movable block slides on the host connecting side plate under the action of the first return spring, and drives the first latch to slide in the first latching groove; The heating assembly further includes a first connecting side plate disposed on the base of the heating assembly, and the first connecting side plate further includes a third buckle, which can cooperate with a first buckle groove on the main unit connecting side plate. Under the action of the first reset spring, the first buckle cooperates with the third buckle in the first buckle groove to lock and unlock the heating component and the main unit.

6. The combined ventilator according to claim 5, characterized in that: The first latching module further includes a first fixing unit; the first fixing unit includes a first fixing block and a second fixing block fixedly disposed on the host connection side plate, the first reset spring abuts against the host connection side plate by abutting against the first fixing block, and the second fixing block is used to restrict the movement path of the first movable block; The first movable block is provided with a first through hole, and the second fixed block is disposed in the first through hole; by changing the shape of the first through hole and the position of the second fixed block on the host connection side plate, the movement path of the first movable block on the host connection side plate can be changed.

7. The combined ventilator according to claim 6, characterized in that, The setting position of the first fixed unit satisfies: The angle between the extension / retraction direction of the first reset spring and the movement direction of the first movable block is an acute angle. In the stationary state, the first reset spring is in a stretched state, and the first movable block is subjected to a pushing force at its original position, causing the first buckle to be engaged in the first buckle groove.

8. The combined ventilator according to claim 7, characterized in that: The second latching module further includes a second operating part fixedly connected to the second movable block, the second operating part being used to apply an external force to the second movable block; The first latching module further includes a first operating part fixedly connected to the first movable block, the first operating part being used to apply an external force to the first movable block.

9. The combined ventilator according to claim 8, characterized in that: The host also includes a host housing, a first air inlet and a first air outlet disposed on the host housing, and an air duct module disposed inside the host housing. The air duct module is connected to the first air inlet and the first air outlet respectively. The first air outlet is disposed on the host connection side plate. The first connecting side plate further includes a first airflow hole; the first airflow hole can be connected to the first air outlet; the second connecting side plate further includes a second airflow hole; the second airflow hole can be connected to the first airflow hole. The water tank assembly further includes an open water storage tank and an airflow chamber covering the water storage tank. The airflow chamber includes a second air inlet and a second air outlet on the airflow chamber, and an air inlet pipe inside the airflow chamber. The second air inlet can be connected to the second airflow hole. One end of the air inlet pipe is connected to the second air inlet, and the other end is close to the bottom inner side of the water storage tank to guide positive pressure airflow into the water. The second snap-fit ​​slot is provided on the airflow chamber. When the air duct module is working, it drives external air to flow into the air duct module through the first air inlet. Under the action of the air duct module, the external air is subjected to a certain pressure and then flows out of the main unit through the first air outlet, thereby obtaining a positive pressure airflow. The positive pressure airflow flows sequentially through the first air passage, the second air passage, the second air inlet, and the long air inlet pipe into the water storage tank, carrying water vapor, and then flows out from the second air outlet, thereby obtaining a humidifying positive pressure airflow.

10. The combined ventilator according to claim 9, characterized in that: When the first wire terminal and the second wire terminal are connected, the first air outlet is connected to the first air flow hole. When the second buckle and the second buckle slot are engaged and connected, the second air outlet and the second airflow hole are connected.

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