Respiratory assistance apparatus

Abstract

Respiration assisting equipment comprises a water tank and a main machine, and the water tank is provided with an inner cavity, an air inlet and an air outlet, the main machine comprises a shell, a heating assembly, an elastic piece and a temperature switch, the heating assembly is movably installed on the shell in the first direction, and the heating assembly makes heat conduction contact with the water tank. The elastic piece is arranged between the shell and the heating assembly and constantly applies pushing force towards the water tank to the heating assembly in the first direction. The temperature switch is connected with the heating assembly and comprises a switch element, and when the temperature of the heating assembly exceeds a threshold value, the switch element moves from the first position to the second position so that the heating assembly can stop working. The shell is provided with a reset channel, the reset channel extends to the motion path of the switch element, the reset channel is used for containing a reset piece, and when the heating assembly is pressed by external force to drive the switch element to move towards the reset piece till the reset piece makes contact with the switch element, the reset piece is used for extruding the switch element so that the switch element can reset to the first position.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a respiratory assistance device. Background Art

[0002] Respiratory assistance devices, such as humidifiers and oxygen therapy devices, have the function of heating and humidifying gases. Specifically, a heating component heats the water in a water tank installed on a main body, so as to heat and humidify the gas flowing through the water tank. In order to prevent the heating component from overheating and causing harm to the device or personnel, a temperature switch is generally installed on the heating component. When the temperature of the heating component exceeds the threshold value of the temperature switch, the switching element of the temperature switch pops out, and the heating module stops heating, thereby realizing thermal protection.

[0003] For the existing respiratory assistance devices, for integrated setting, the temperature switch is assembled with the heating component, and the temperature switch is placed inside the main body. After the switching element of the temperature switch pops out for thermal protection, it is necessary to disassemble the main body and press the switching element of the temperature switch for reset. This implementation method is troublesome to operate and brings inconvenience to users and professional maintenance personnel. Summary of the Invention

[0004] In view of this, the present invention provides a respiratory assistance device.

[0005] The respiratory assistance device proposed in the first aspect of the present invention includes a water tank and a main body. The water tank has an inner cavity, an air inlet communicating with the inner cavity, and an air outlet communicating with the inner cavity. The inner cavity is used to hold water, the air inlet is used to receive a gas flow from a gas source, and the air outlet is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows to the patient from the air outlet. The main body includes:

[0006] A housing;

[0007] A heating component, movably installed in the housing along a first direction, the heating component being used for thermally contacting with the water tank to heat the water in the inner cavity;

[0008] An elastic member, disposed between the housing and the heating component, and constantly applying a pushing force towards the water tank to the heating component along the first direction; and

[0009] A temperature switch, connected to the heating component, the temperature switch including a switching element. When the temperature of the heating component exceeds a threshold value, the switching element moves from a first position to a second position to stop the heating component from working;

[0010] Wherein, the housing is provided with a reset channel which extends to the movement path of the switch element. The reset channel is used to accommodate a reset member. When the heating assembly is pressed by an external force to drive the switch element to move towards the reset member and contact the reset member, the reset member is used to squeeze the switch element so that the switch element resets to the first position.

[0011] The breathing assistance device proposed in the second aspect of the present invention includes a water tank and a main body. The water tank has an inner cavity, an air inlet communicating with the inner cavity, and an air outlet communicating with the inner cavity. The inner cavity is used to hold water. The air inlet is used to receive a gas flow from a gas source. The air outlet is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows from the air outlet to the patient. The main body includes:

[0012] A housing;

[0013] A heating assembly, which is movably installed on the housing. The water tank is used to be placed on the heating assembly and is in thermal contact with the heating assembly to heat the water in the inner cavity; and

[0014] A temperature switch, which is connected to the heating assembly. The temperature switch includes a switch element. When the temperature of the heating assembly exceeds a threshold value, the switch element moves from the first position to the second position along a first direction so that the heating assembly stops working;

[0015] Wherein, the housing is provided with a reset channel which extends from the outer side wall of the housing to the movement path of the switch element along a second direction which forms an angle with the first direction. The reset channel is used to accommodate a reset member. The reset member is used to squeeze the switch element in the second position so that the switch element resets to the first position.

[0016] The breathing assistance device proposed in the third aspect of the present invention includes a water tank and a main body. The water tank has an inner cavity, an air inlet communicating with the inner cavity, and an air outlet communicating with the inner cavity. The inner cavity is used to hold water. The air inlet is used to receive a gas flow from a gas source. The air outlet is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows from the air outlet to the patient. The main body includes:

[0017] A housing;

[0018] A heating assembly, which is movably installed on the housing along a first direction. The water tank is used to be placed on the heating assembly and is in thermal contact with the heating assembly to heat the water in the inner cavity;

[0019] an elastic member, disposed between the housing and the heating assembly, and constantly applying a pushing force to the heating assembly toward the water tank along the first direction; and

[0020] a temperature switch connected to the heating component, the temperature switch comprising a switch element, and when the temperature of the heating component exceeds a threshold, the switch element moves from the first position to the second position to stop the heating component from working;

[0021] In which, the shell is provided with a reset channel, which extends to the movement path of the switch element. The host also includes a reset member preset in the reset channel. When the heating component is pressed by an external force and drives the switch element to move toward the reset member, the reset member squeezes the switch element under the action of the external force to reset the switch element to the first position.

[0022] It can be seen from the above technical solutions that the breathing assistance device proposed in the first aspect of the present invention, firstly, by setting the heating component to be able to drive the switch element to move toward the reset element when being pressed by external force, the reset element squeezes the switch element so that the switch element can be reset to the first position. In this embodiment, the operator does not need to disassemble the machine when resetting the temperature switch, which is highly convenient. Secondly, by setting the heating component to be movably mounted on the shell along the first direction, the elastic member applies a pushing force to the heating component along the first direction. In this embodiment, even if the water tank installed on the main machine is different, the heating component can maintain contact with the water tank under the elastic force of the elastic member, thereby improving the adaptability of the main machine to different water tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained like these accompanying drawings without paying any creative work.

[0024] Figure 1 is a schematic structural diagram of a breathing assistance device provided in one embodiment of the present invention;

[0025] Figure 2 is an exploded schematic diagram of a breathing assistance device provided in one embodiment of the present invention;

[0026] Figure 3 is a cross-sectional schematic diagram of a host provided by an embodiment of the present invention;

[0027] Figure 4 yes Figure 3 A local enlarged schematic diagram of the middle A;

[0028] Figure 5 is a schematic cross-sectional view of a main unit proposed in another embodiment of the present invention;

[0029] Figure 6 is Figure 5 a partial enlarged schematic view of the position B in

[0030] Figure 7 a schematic cross-sectional view of a partial structure of a main unit proposed in another embodiment of the present invention. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figures 1 to 4 shown, an embodiment of the present invention proposes a breathing assistance device 1000. The proposed breathing assistance device 1000 includes a water tank 100 and a main unit 200. The water tank 100 has an inner cavity, an air inlet 101 communicating with the inner cavity, and an air outlet 102 communicating with the inner cavity. The inner cavity is used to hold water. The air inlet 101 is used to receive a gas flow from a gas source. The air outlet 102 is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet 101 is heated and humidified in the inner cavity and then flows to the patient from the air outlet 102.

[0033] The main unit 200 includes a housing 10, a heating component 20, an elastic member (not shown in the figure), and a temperature switch 40. The heating component 20 is movably installed in the housing 10 along a first direction X. The heating component 20 is used for thermally contacting with the water tank 100 to heat the water in the inner cavity. In one embodiment, the housing 10 includes a card slot 1011, a stopper 1012, and an elastic pushing member (not shown) provided near its top. The front part of the card slot 1011 is open. The stopper 1012 is provided at the front opening of the card slot 1011 and can move along the first direction X to open or close the front opening of the card slot 1011. The elastic pushing member constantly applies an elastic force to the stopper 1012, so that the stopper 1012 closes the front opening of the card slot 1011 when no external force is applied. The water tank 100 includes a flange 103 provided at its bottom. During installation, by pressing the stopper 1012 with an external force, the front opening of the card slot 1011 is opened. The flange 103 enters the card slot 1011 through the front opening of the card slot 1011 and cooperates with it. After the external force is withdrawn, the stopper 1012 closes the front opening of the card slot 1011.

[0034] The elastic member is disposed between the housing 10 and the heating assembly 20, and constantly applies a pushing force towards the water tank 100 to the heating assembly 20 along the first direction X. After the bottom flange 103 of the water tank 100 enters the card slot, the elastic member makes the heating assembly 20 in close contact with the bottom of the water tank 100. The temperature switch 40 is connected to the heating assembly 20. The temperature switch 40 includes a switch element 41. When the temperature of the heating assembly 20 exceeds the threshold, the switch element 41 moves from the first position to the second position to stop the heating assembly 20 from working. Here, this position is relative to the position of the heating assembly 20, and this movement is relative to the movement of the heating assembly 20. The switch element 41 can be, but is not limited to, a button type or a lever type. Wherein, the housing 10 is provided with a reset channel 11. The reset channel 11 extends to the movement path of the switch element 41. The reset channel 11 is used to accommodate a reset member. When the heating assembly 20 is pressed by an external force to drive the switch element 41 to move towards the reset member, the reset member is used to squeeze the switch element 41 so that the switch element 41 resets to the first position.

[0035] In a usage scenario, when an operator needs to reset the switch element 41, the heating assembly 20 is pressed. The heating assembly 20 moves to drive the switch element 41 to move towards the reset member. The reset member squeezes the switch element 41. The switch element 41 moves from the second position towards the first position to the third position under the squeezing of the reset member, triggering the reset of the switch element 41. After reset, the switch element 41 returns to the first position. Here, the third position and the first position can be the same position, or the first position can be located between the second position and the third position.

[0036] It should be noted that when the reset channel 11 extends from the outer side wall of the housing 10 to the movement path of the switch element 41 along the second direction which forms an angle with the first direction X, when the heating assembly 20 is pressed along the first direction and the reset member is pushed along the second direction, the switch element 41 moves with the heating assembly 20 and enters the reset channel, so that the switch element 41 is squeezed by the reset member in the first direction. When the reset channel 11 extends from the outer side wall of the housing 10 along the first direction X to the movement path of the switch element 41, the switch element 41 can be squeezed by the reset member in the first direction by pressing at least one of the heating assembly 20 and the reset member along the first direction.

[0037] Among them, the travel of the heating component 20 when the heating component 20 is pressed against the switch element 41 and the reset member is greater than the travel of the heating component 20 generated under the pressing of the corresponding water tank 100 when the water tank 100 is installed on the main body 200. In this way, when the temperature of the heating component 20 exceeds the threshold, the switch element 41 moves from the first position to the second position to stop the heating component 20 from working. Even if the water tank 100 is removed and then reinstalled, the temperature switch 40 will not be reset. Only by removing the water tank 100 and applying a sufficiently large external force to the heating component 20 can the temperature switch 40 be reset.

[0038] The breathing assistance device 1000 proposed in the embodiment of the present invention first drives the switch element 41 to move towards the reset member when the heating component 20 is pressed by an external force. The reset member presses the switch element 41 so that the switch element 41 can be reset to the first position. In this embodiment, when the operator resets the temperature switch 40, there is no need to disassemble the machine, which is highly convenient. Secondly, by arranging the heating component 20 to be movably installed in the housing 10 along the first direction X, the elastic member applies a pushing force along the first direction X to the heating component 20. In this embodiment, even if the water tanks 100 installed on the main body 200 are different, the heating component 20 can still be in contact with the water tank 100 under the elastic force of the elastic member. In this way, the adaptability of the main body 200 to different water tanks 100 can be improved.

[0039] As Figure 3 shown, in one embodiment, the main body 200 further includes a circuit board 30. The heating component 20 is disposed near the top of the housing 10. The circuit board 30 is disposed inside the housing 10 and is electrically connected to the heating component 20, and the circuit board 30 is located below the heating component 20.

[0040] As Figure 4 shown, in one embodiment, the switch element 41 moves from the first position to the second position in the first direction X, and the first direction X is the height direction of the main body 200. Among them, the "height direction of the main body 200" is in terms of the orientation of the breathing assistance device 1000 in the normal use state. It should be noted that the first direction X is not limited to being set as the height direction of the main body 200. For example, in some other embodiments, the first direction X can be a horizontal direction perpendicular to the height direction, that is, the heating component 20 is movably connected to the housing 10 in the horizontal direction, the elastic member applies a pushing force in the horizontal direction to the heating component 20, and the switch element 41 moves from the first position to the second position in the horizontal direction.

[0041] As Figure 4 shown, in one embodiment, the temperature switch 40 further includes a switch main body 42. The switch main body 42 is disposed at the bottom of the heating component 20, and the switch element 41 is disposed at the bottom of the switch main body 42.

[0042] As Figure 3 shown, in one embodiment, the housing 10 includes a top plate 12, a bottom plate 13, and side plates 14. The top plate 12 and the bottom plate 13 are oppositely arranged, and the side plates 14 connect the top plate 12 and the bottom plate 13. The reset channel 11 extends from the side plate 14 along a second direction Y that forms an angle with the first direction X to the movement path of the switch element 41.

[0043] Optionally, the first direction X is perpendicular to the second direction Y. The reset member can be, but is not limited to, an Allen wrench or a screwdriver. In a specific implementation scenario, when the switch element 41 needs to be reset, the operator inserts the Allen wrench or the screwdriver into the reset channel 11, and then presses the heating assembly 20. The heating assembly 20 moves along the first direction X to drive the switch element 41 to move towards the reset member. The reset member presses the switch element 41 so that the switch element 41 moves from the second position towards the first position to the third position, thereby triggering the reset of the switch element 41. After the switch element 41 is reset, the operator removes the Allen wrench or the screwdriver.

[0044] It should be noted that the reset channel 11 is not limited to extending from the side plate 14 along the second direction Y that forms an angle with the first direction X to the movement path of the switch element 41 in the above-described setting manner. For example, in another embodiment, as Figure 5 shown, the housing 10 includes a bottom plate 13, and the reset channel 11 extends from a position on the bottom plate 13 opposite to the switch element 41 along the first direction X to the switch element 41. That is, in this embodiment, the extending direction of the reset channel 11 and the movement path of the switch element 41 are on a straight line. It should be noted that in this implementation manner, the entrance of the reset channel 11 is located on the bottom plate 13 of the housing 10. When the respiratory assistance device 1000 is in a normal use state, the appearance of the entrance of the reset channel 11 is not visible, and the overall consistency of the appearance of the respiratory assistance device 1000 is good.

[0045] As Figures 2 to 3 shown, in one embodiment, the side plate 14 includes a panel 141, a first side plate 142, a second side plate 143, and a back plate 144. The first side plate 142 and the second side plate 143 are respectively disposed on both sides of the panel 141, and the back plate 144 is connected to the first side plate 142 and the second side plate 143. The main unit 200 further includes a display screen 50, and the display screen 50 is disposed on the panel 141. In one embodiment, the back plate 144 has an outwardly convex arc-shaped structure, and the back plate 144, the first side plate 142, and the second side plate 143 are integrally formed. In another embodiment, the back plate 144 is a flat plate, and the panel 141, the back plate 144, the first side plate 142, and the second side plate 143 generally enclose a rectangular structure. It can be determined specifically according to actual design requirements.

[0046] As Figures 2 to 3As shown, in one embodiment, the backplane 144 is provided with a recess 1441 facing the panel 141. The recess 1441 has a bottom wall 1442 opposite to the panel 141, and the entrance of the reset channel 11 is located on the bottom wall 1442 of the recess 1441. In this embodiment, the entrance of the reset channel 11 can be hidden to a certain extent.

[0047] As Figure 4 shown, in one embodiment, the housing 10 is provided with a switch element channel 15 communicating with the reset channel 11 along the first direction X, and the switch element 41 is disposed through the switch element channel 15. Among them, the switch element channel 15 can play a guiding role for the switch element 41.

[0048] As Figure 4 shown, in one embodiment, the reset channel 11 is perpendicular to the switch element channel 15. Of course, it is not limited to being perpendicular. The switch element channel 15 and the reset channel 11 can be arranged at other angles as long as the reset channel 11 communicates with the switch element channel 15.

[0049] As Figure 5 shown, in one embodiment, the housing 10 includes an upper housing 10a and a lower housing 10b, and the reset channel 11 is integrally formed with the upper housing 10a or the lower housing 10b. In this embodiment, it is beneficial to the simplicity of the structure and convenient for assembly.

[0050] It should be noted that the reset channel 11 is not limited to being integrally formed with the upper housing 10a or the lower housing 10b. For example, in another embodiment, as Figure 5 and Figure 6 shown, the housing 10 includes an upper housing 10a and a lower housing 10b. The main body 200 further includes a pipe fitting 60. The pipe fitting 60 is separately formed with the upper housing 10a or the lower housing 10b, and the pipe fitting 60 is installed on the upper housing 10a or the lower housing 10b through a mechanical structure. The internal channel of the pipe fitting 60 forms the reset channel 11. In this embodiment, the reset channel 11, the upper housing 10a and the lower housing 10b are separately formed, which can reduce the manufacturing difficulty of the device.

[0051] As Figure 5 and Figure 6 shown, in one embodiment, the main body 200 further includes a reset member 70, and the reset member 70 is pre-disposed in the reset channel 11. In this embodiment, when the user or the maintenance personnel reset the switch element 41, they do not need to carry the reset member 70, which improves the convenience of use.

[0052] As Figure 5 and Figure 6As shown, in one embodiment, the reset channel 11 extends from the outer wall of the housing 10 to the movement path of the switch element 41. The reset member 70 is movably disposed in the reset channel 11 along the first direction X. The reset member 70 is used to press the switch element 41 when externally pressed, so that the switch element 41 is reset to the first position. In a usage scenario, when the switch element 41 needs to be reset, an operator can press one end of the reset member 70 located on the outer wall of the housing 10 to push the reset member 70. The reset member 70 moves towards the switch element 41 and presses the switch element 41. The switch element 41 moves from the second position towards the first position to the third position under the pressing of the reset member 70, triggering the reset of the switch element 41.

[0053] As Figure 5 and Figure 6 shown, in one embodiment, the host 200 further includes a restoring member 80. The restoring member 80 is disposed at the reset channel 11. The restoring member 80 is used to apply a restoring force opposite to the external force to the reset member 70. In this embodiment, when the external force applied to the reset member 70 is withdrawn, the restoring member 80 can drive the reset member 70 back to the initial position.

[0054] As Figure 6 shown, in one embodiment, the inner side wall of the reset channel 11 is provided with a first limiting portion 111, the reset member 70 is provided with a second limiting portion 71, the restoring member 80 is a spring, the spring is sleeved on the reset member 70, one end of the spring abuts against the first limiting portion 111, and the other end of the spring abuts against the second limiting portion 71. When the operator presses the reset member 70 to compress the spring, when the operator releases the reset member 70, the reset member 70 returns to the initial position under the elastic force of the spring.

[0055] It should be noted that the host 200 may not be provided with the reset member 70. For example, in another embodiment, when the switch element 41 is reset to the first position, it can push the reset member 70 towards the initial position of the reset member 70. For another example, in another embodiment, the reset member 70 extends along the height direction of the host 200, and the reset member 70 can return to the initial position by its own gravity.

[0056] It should be noted that the reset channel 11 and the reset member 70 are not limited to the above embodiments. For example, in another embodiment, as Figure 7 shown, the housing 10 is provided with a blind hole 16 extending along the movement direction of the switch element 41. The blind hole 16 forms the reset channel 11. The blind hole 16 has a bottom wall 161 opposite to the switch element 41. The reset member 70 includes a protrusion 72 disposed on the bottom wall 161. The protrusion 72 is used to press the switch element 41 when the heating assembly 20 is externally pressed to drive the switch element 41 to move towards the protrusion 72, so that the switch element 41 is reset to the first position.

[0057] AsFigures 1 to 7 As shown in the figure, an embodiment of the present invention further provides a breathing assistance device 1000. The proposed breathing assistance device 1000 includes a water tank 100 and a main unit 200. The water tank 100 has an inner cavity, an air inlet 101 communicating with the inner cavity, and an air outlet 102 communicating with the inner cavity. The inner cavity is used to hold water. The air inlet 101 is used to receive a gas flow from a gas source. The air outlet 102 is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet 101 is heated and humidified in the inner cavity and then flows to the patient from the air outlet 102. The main unit 200 includes a housing 10, a heating assembly 20, and a temperature switch 40. The heating assembly 20 is movably installed in the housing 10. The water tank 100 is used to be placed on the heating assembly 20 and is in thermal contact with the heating assembly 20 to heat the water in the inner cavity. The temperature switch 40 is connected to the heating assembly 20. The temperature switch 40 includes a switching element 41. When the temperature of the heating assembly 20 exceeds a threshold value, the switching element 41 moves from a first position to a second position along a first direction X to stop the heating assembly 20 from working. Among them, the housing 10 is provided with a reset channel 11. The reset channel 11 extends from the outer side wall of the housing 10 along a second direction Y that forms an angle with the first direction X to the movement path of the switching element 41. The reset channel 11 is used to accommodate a reset member 70. The reset member 70 is used to squeeze the switching element 41 in the second position to reset the switching element 41 to the first position.

[0058] In a usage scenario, when the temperature of the heating assembly 20 exceeds the threshold value, the switching element 41 moves from the first position to the second position and enters the reset channel 11. When an operator extends the reset member 70 from the outer side wall of the housing 10 along the reset channel 11 to the movement path of the switching element 41, the reset member 70 squeezes the switching element 41 in the second position to reset the switching element 41 to the first position.

[0059] In an embodiment, the main unit 200 further includes a circuit board 30. The heating assembly 20 is disposed near the top of the housing 10. The circuit board 30 is disposed inside the housing 10 and is electrically connected to the heating assembly 20, and the circuit board 30 is located below the heating assembly 20.

[0060] In an embodiment, the main unit 200 further includes an elastic member. The elastic member is disposed between the housing 10 and the heating assembly 20 and constantly applies a pushing force towards the water tank 100 to the heating assembly 20 along the first direction X. The heating assembly 20 is pressed by an external force to drive the switching element 41 to move towards the reset member 70. The reset member 70 is used to squeeze the switching element 41 to reset the switching element 41 to the first position.

[0061] In one embodiment, the stroke of the heating component 20 when the heating component 20 is pressed until the switch element 41 contacts the reset member is greater than the stroke of the heating component 20 when the water tank 100 is installed on the host 200 under the pressure of the water tank 100.

[0062] In one embodiment, the switch element 41 moves from the first position to the second position in a first direction X, and the first direction X is the height direction of the host 200. The housing 10 includes a top plate 12, a bottom plate 13, and a side plate 14, the top plate 12 is arranged opposite to the bottom plate 13, the side plate 14 connects the top plate 12 and the bottom plate 13, and the reset channel 11 extends from the side plate 14 to the movement path of the switch element 41.

[0063] In one embodiment, the reset channel 11 is perpendicular to the first direction X.

[0064] The structures, connection relationships and beneficial effects of other components of the breathing assistance device 1000 proposed in the embodiments of the present invention can refer to all the above embodiments and will not be described in detail here.

[0065] like Figures 1 to 7 As shown, an embodiment of the present invention also proposes a respiratory assistance device 1000, which includes a water tank 100 and a host 200. The water tank 100 has an inner cavity, an air inlet 101 connected to the inner cavity, and an air outlet 102 connected to the inner cavity. The inner cavity is used to contain water, the air inlet 101 is used to receive a gas flow from a gas source, and the air outlet 102 is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet 101 flows to the patient from the air outlet 102 after being heated and humidified in the inner cavity. The host 200 includes a housing 10, a heating component 20, an elastic member, and a temperature switch 40. The heating component 20 is movably mounted on the housing 10 along a first direction X. The water tank 100 is used to be placed on the heating component 20 and in thermal contact with the heating component 20 to heat the water in the inner cavity. The elastic member is arranged between the housing 10 and the heating component 20, and constantly applies a pushing force toward the water tank 100 to the heating component 20 along the first direction X. The temperature switch 40 is connected to the heating component 20, and the temperature switch 40 includes a switch element 41. When the temperature of the heating component 20 exceeds the threshold, the switch element 41 moves from the first position to the second position to stop the heating component 20. The housing 10 is provided with a reset channel 11, and the reset channel 11 extends to the movement path of the switch element 41. The host 200 also includes a reset member 70 preset in the reset channel 11. When the heating component 20 is pressed by an external force and drives the switch element 41 to move toward the reset member 70, the reset member 70 squeezes the switch element 41 under the action of the external force, so that the switch element 41 is reset to the first position.

[0066] In one embodiment, the host 200 further includes a restoring member 80 disposed at the reset channel 11 for applying a restoring force opposite to the external force to the reset member 70.

[0067] In one embodiment, a first limiting portion 111 is provided on the inner sidewall of the reset channel 11, a second limiting portion 71 is provided on the reset member 70, the restoring member 80 is a spring, the spring is sleeved on the reset member 70, one end of the spring abuts against the first limiting portion 111, and the other end of the spring abuts against the second limiting portion 71.

[0068] In one embodiment, the housing 10 includes an upper housing 10a and a lower housing 10b, the host 200 further includes a pipe member 60, the pipe member 60 is separately formed with the upper housing 10a or the lower housing 10b independently, the pipe member 60 is installed on the upper housing 10a or the lower housing 10b through a mechanical structure, and the internal channel of the pipe member 60 forms the reset channel 11.

[0069] In one embodiment, the stroke of the heating assembly 20 when the heating assembly 20 is pressed to contact the switch element 41 is greater than the stroke of the heating assembly 20 generated under the pressing of the water tank 100 when the water tank 100 is installed on the host 200.

[0070] In one embodiment, the host 200 further includes a circuit board 30, the heating assembly 20 is disposed near the top of the housing 10, the circuit board 30 is disposed inside the housing 10 and electrically connected to the heating assembly 20, and the circuit board 30 is located below the heating assembly 20.

[0071] In one embodiment, the switch element 41 moves from a first position to a second position in a first direction X, the first direction X is the height direction of the host 200, and the reset channel 11 extends from the outer sidewall of the housing 10 along a second direction Y disposed at an angle to the first direction X to the movement path of the switch element 41.

[0072] In one embodiment, the switch element 41 moves from a first position to a second position in a first direction X, the first direction X is the height direction of the host 200, the housing 10 includes a bottom plate 13, and the reset channel 11 extends from the bottom plate 13 and the position opposite to the switch element 41 along the first direction X to the switch element 41.

[0073] For the structures, connection relationships, and beneficial effects of other components of the breathing assistance device 1000 proposed in the embodiments of the present invention, reference may be made to all the above embodiments, and details are not described herein again.

[0074] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A breathing assistance device, characterized in that, Comprising a water tank and a main body. The water tank has an inner cavity, an air inlet communicating with the inner cavity, and an air outlet communicating with the inner cavity. The inner cavity is used to hold water. The air inlet is used to receive a gas flow from a gas source. The air outlet is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows from the air outlet to the patient. The main body includes: A housing; A heating component movably mounted in the housing along a first direction. The heating component is used to be in thermal contact with the water tank to heat the water in the inner cavity; An elastic member disposed between the housing and the heating component and constantly applying a pushing force towards the water tank to the heating component along the first direction; and A temperature switch connected to the heating component. The temperature switch includes a switching element. When the temperature of the heating component exceeds a threshold, the switching element moves from a first position to a second position to stop the heating component from working; Wherein, the housing is provided with a reset channel extending to the movement path of the switching element. The reset channel is used to accommodate a reset member. When the heating component is pressed by an external force to drive the switching element to move towards the reset member and contact the reset member, the reset member is used to squeeze the switching element to reset the switching element to the first position.

2. The breathing assistance device according to claim 1, wherein The main body further includes a circuit board. The heating component is disposed near the top of the housing. The circuit board is disposed inside the housing and electrically connected to the heating component, and the circuit board is located below the heating component.

3. The breathing assistance device according to claim 1, wherein, The stroke of the heating component when pressed to contact the switching element with the reset member is greater than the stroke of the heating component generated under the pressing of the water tank when the water tank is installed on the main body.

4. The breathing assistance device according to claim 1, wherein, The switching element moves from the first position to the second position in the first direction, and the first direction is the height direction of the main body.

5. The breathing assistance device according to claim 4, wherein The temperature switch further includes a switch body disposed at the bottom of the heating component, and the switching element is disposed at the bottom of the switch body.

6. The breathing assistance device according to claim 4 or 5, characterized in that, The housing includes a bottom plate, and the reset channel extends from the bottom plate and at a position opposite to the switching element along the first direction to the switching element.

7. The breathing assistance device according to claim 1, characterized in that, The housing includes a top plate, a bottom plate and side plates. The top plate and the bottom plate are oppositely arranged, and the side plates connect the top plate and the bottom plate. The reset channel extends from the side plate along a second direction forming an angle with the first direction to the movement path of the switching element.

8. The breathing assistance device according to claim 7, wherein, The side plate includes a panel, and the main body further includes a display screen disposed on the panel.

9. The breathing assistance device according to claim 1, characterized in that, The housing is provided with a switching element channel communicating with the reset channel along the first direction, and the switching element passes through the switching element channel.

10. The breathing assistance device according to claim 9, wherein, The reset channel is perpendicular to the switching element channel.

11. The breathing assistance device according to claim 1, wherein, The housing includes an upper housing and a lower housing, and the reset channel is integrally formed with the upper housing or the lower housing; or, The housing includes an upper housing and a lower housing. The main unit further includes a pipe fitting, which is separately formed independently with the upper housing or the lower housing. The pipe fitting is installed to the upper housing or the lower housing through a mechanical structure, and an internal passage of the pipe fitting forms the reset passage.

12. The breathing assistance device according to claim 1, characterized in that, The main unit further includes a reset member, which is pre - placed in the reset passage.

13. The breathing assistance device according to claim 12, characterized in that, The reset passage extends from the outer side wall of the housing to the movement path of the switch element. The reset member is movably arranged in the reset passage along a first direction. The reset member is used to squeeze the switch element when pressed by an external force, so that the switch element resets to the first position.

14. The breathing assistance device according to claim 13, wherein The main unit further includes a restoring member, which is arranged at the reset passage and is used to apply a restoring force opposite to the external force to the reset member.

15. The breathing assistance device according to claim 12, wherein The housing is provided with a blind hole extending along the movement direction of the switch element, and the blind hole forms the reset passage. The blind hole has a bottom wall opposite to the switch element; The reset member includes a protrusion arranged on the bottom wall. The protrusion is used to squeeze the switch element when the heating assembly is pressed by an external force and drives the switch element to move towards the protrusion, so that the switch element resets to the first position.

16. The breathing assistance device according to claim 15, characterized in that, The switch element moves from the first position to the second position in the first direction, and the first direction is the height direction of the main unit.

17. A breathing assistance device, characterized in that, It includes a water tank and a main unit. The water tank has an inner cavity, an air inlet communicating with the inner cavity, and an air outlet communicating with the inner cavity. The inner cavity is used to hold water. The air inlet is used to receive a gas flow from a gas source. The air outlet is used to connect a pipeline for delivering gas to a patient. The gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows from the air outlet to the patient. The main unit includes: A housing; A heating assembly, movably installed on the housing. The heating assembly is used to conduct heat contact with the water tank to heat the water in the inner cavity; and A temperature switch, connected to the heating assembly. The temperature switch includes a switch element. When the temperature of the heating assembly exceeds a threshold value, the switch element moves from the first position to the second position along the first direction to stop the heating assembly from working; Wherein, the housing is provided with a reset passage, and the reset passage extends from the outer side wall of the housing to the movement path of the switch element along a second direction which forms an angle with the first direction. The reset passage is used to accommodate a reset member, and the reset member is used to squeeze the switch element in the second position so that the switch element resets to the first position.

18. The breathing assistance device according to claim 17, wherein, The main unit further includes a circuit board. The heating assembly is arranged near the top of the housing. The circuit board is arranged inside the housing and is electrically connected to the heating assembly, and the circuit board is located below the heating assembly.

19. The breathing assistance device according to claim 17, wherein, The host also includes an elastic member, which is arranged between the shell and the heating component and constantly applies a pushing force to the heating component toward the water tank along a first direction. The heating component is pressed by an external force to drive the switch element to move toward the reset member, and the reset member is used to squeeze the switch element to reset the switch element to the first position.

20. The breathing assistance device according to claim 19, characterized in that, The stroke of the heating component when the heating component is pressed until the switch element contacts the reset member is greater than the stroke of the heating component generated by the water tank being pressed when the water tank is installed on the host.

21. The respiratory assistance device according to claim 19, characterized in that, The switch element moves from the first position to the second position in the first direction, and the first direction is the height direction of the host; the shell includes a top plate, a bottom plate and a side plate, the top plate is arranged opposite to the bottom plate, the side plate connects the top plate and the bottom plate, and the reset channel extends from the side plate to the movement path of the switch element.

22. The breathing assistance device according to claim 21, wherein, The reset channel is perpendicular to the first direction.

23. A breathing assistance device, characterized in that, The device comprises a water tank and a main unit, wherein the water tank has an inner cavity, an air inlet connected to the inner cavity, and an air outlet connected to the inner cavity, wherein the inner cavity is used to contain water, the air inlet is used to receive a gas flow from a gas source, and the air outlet is used to connect a pipeline for delivering gas to a patient, and the gas flow entering the inner cavity from the air inlet is heated and humidified in the inner cavity and then flows from the air outlet to the patient, wherein the main unit comprises: case; a heating component movably mounted on the housing along a first direction, the water tank being placed on the heating component and in thermal contact with the heating component to heat the water in the inner cavity; an elastic member being disposed between the housing and the heating component and constantly applying a pushing force to the heating component toward the water tank along the first direction; and a temperature switch connected to the heating component, the temperature switch comprising a switch element, and when the temperature of the heating component exceeds a threshold, the switch element moves from the first position to the second position to stop the heating component from working; In which, the shell is provided with a reset channel, which extends to the movement path of the switch element. The host also includes a reset member preset in the reset channel. When the heating component is pressed by an external force and drives the switch element to move toward the reset member, the reset member squeezes the switch element under the action of the external force to reset the switch element to the first position.

24. The breathing assistance device according to claim 23, wherein, The host further includes a restoring member, which is disposed at the reset channel and is used to apply a restoring force opposite to the external force to the reset member.

25. The breathing assistance device according to claim 24, wherein, The inner side wall of the reset channel is provided with a first limiting portion, the reset member is provided with a second limiting portion, the recovery member is a spring, the spring is sleeved on the reset member, one end of the spring abuts against the first limiting portion, and the other end of the spring abuts against the second limiting portion.

26. The breathing assistance device according to claim 24, wherein, The housing includes an upper housing and a lower housing. The main body further includes a pipe fitting, which is separately and independently formed with the upper housing or the lower housing. The pipe fitting is installed to the upper housing or the lower housing through a mechanical structure, and an internal channel of the pipe fitting forms the reset channel.

27. The breathing assistance device according to claim 23, wherein, The stroke of the heating assembly when the heating assembly is pressed to contact the switch element and the reset member is greater than the stroke of the heating assembly generated under the pressing of the water tank when the water tank is installed on the main body.

28. The breathing assistance device according to claim 23, characterized in that, The main body further includes a circuit board. The heating assembly is disposed near the top of the housing. The circuit board is disposed inside the housing and electrically connected to the heating assembly, and the circuit board is located below the heating assembly.

29. The breathing assistance device according to claim 23, wherein, The switch element moves from the first position to the second position in the first direction, and the first direction is the height direction of the main body; the reset channel extends from the outer side wall of the housing to the movement path of the switch element along a second direction disposed at an angle to the first direction.

30. The breathing assistance device according to claim 23, wherein, The switch element moves from the first position to the second position in the first direction, and the first direction is the height direction of the main body; the housing includes a bottom plate, and the reset channel extends from a position on the bottom plate opposite to the switch element to the switch element along the first direction.

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