Humidifying water box of respiratory support equipment

Abstract

The utility model relates to the technical field of respiratory support equipment, in particular to a humidifying water box of respiratory support equipment, which comprises a box body and a heating component. The heating assembly comprises a heat insulation pad, a heating piece and a heating disc which are sequentially arranged from bottom to top. A sealed accommodating cavity for accommodating the heating sheet is formed between the heat insulation pad and the heating disc; a magnetic connector electrically connected with the heating piece is further arranged below the heat insulation pad and used for supplying power to the heating piece and achieving temperature detection signal transmission. According to the humidifying water box, the heating assembly is additionally arranged in the humidifying water box, is directly arranged at the bottom of the box body, is used for being in direct contact with water in the box body and is heated by the heating sheet to supply heat; based on direct heat supply of the heating disc and the arrangement of the heat insulation pad, heat can be conducted into the water box to the maximum extent, heat emitted into air is reduced, energy waste is effectively avoided, more energy is saved, and the heating efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the field of respiratory support equipment technology, and in particular to a humidification water box for a respiratory support equipment. Background Technology

[0002] The humidifier in respiratory support equipment (such as ventilators or high-flow humidifiers) heats the gas supplied by the humidifier to create a warm, humidified airflow for the user. For ease of cleaning, disinfection, and regular replacement, the water tank of the humidifier is detachably installed on the respiratory support equipment. To achieve the "warming" effect, the respiratory support equipment is equipped with a heating plate. A metal heat-conducting plate is pre-installed at the bottom of the water tank via injection molding or other methods. The respiratory support equipment heats this heating plate, and the heat is transferred to the water tank through the metal heat-conducting plate to heat the water inside, thus humidifying the gas entering the tank.

[0003] In existing technologies, when a heating device conducts heat to the water box via a metal heat-conducting plate, some heat is transferred to the water box while some is dissipated into the air, resulting in energy waste and reducing the evaporation rate of the humidified water. Furthermore, the humidified water box only has simple air inlet and outlet ports, preventing the water vapor evaporating in the box from fully mixing with the airflow provided by the device. This leads to low heating efficiency and low humidification efficiency in the aforementioned humidification devices. Therefore, this invention develops a humidified water box for a respiratory support device to address the problems existing in the prior art. Utility Model Content

[0004] The purpose of this invention is to provide a humidification water box for a respiratory support device to solve the problems of low humidification efficiency and low heating efficiency in the prior art.

[0005] The technical solution of this utility model is: a humidification water box for a respiratory support device, comprising a box body and a heating assembly; the box body includes an air inlet and an air outlet, through which gas enters and exits through the air outlet; the heating assembly is fixed to the bottom of the box body and is used to heat the water inside the box body; the heating assembly includes a heat insulation pad, a heating element, and a heating plate arranged sequentially from bottom to top; a sealed cavity is formed between the heat insulation pad and the heating plate, which accommodates the heating element; the heating plate is used to directly contact the water inside the box body and is heated by the heating element; a magnetic connector electrically connected to the heating element is also provided below the heat insulation pad for supplying power to the heating element and transmitting temperature detection signals.

[0006] Preferably, the heating plate has a convex shape in the middle, forming a convex surface at the outer end and a concave surface at the inner end; the heating plate is in contact with the heat insulation pad around its periphery, and the accommodating cavity is formed between the upper end surface of the heat insulation pad and the concave surface;

[0007] The raised surface is in direct contact with the water inside the box, and the concave surface is used for bonding the heating element.

[0008] Preferably, the box body has one or more partitions inside, forming at least two airflow channels with inner and outer rings;

[0009] The separator is formed on the top of the box body, the airflow channel in the outer ring is directly connected to the air inlet, and the airflow channel in the inner ring is directly connected to the air outlet.

[0010] The separator is provided with a slot for gas flow. When multiple separators are constructed, the slots on adjacent separators are located on opposite sides, and the slots on the outermost separator are located on opposite sides of the air inlet.

[0011] Preferably, the top height of the slot on any of the partitions is not lower than the highest water level line inside the box.

[0012] Preferably, with reference to the flow direction of airflow within the airflow channels, each airflow channel has a gas inlet end and a gas outlet end;

[0013] The height of the top surface of at least the outermost airflow channel gradually decreases from the gas inlet end to the gas outlet end.

[0014] Preferably, the box body includes a water box top cover, a water box body, and a water box bottom cover;

[0015] The air inlet, air outlet and separator are formed on the top cover of the water tank;

[0016] The heating component is installed between the water tank body and the water tank bottom cover and is sealed together.

[0017] Preferably, the lower end face of the water box body has a cavity for the protruding surface to be inserted; the bottom surface of the water box body also has a downwardly protruding rib, and the space enclosed by the rib is for the bottom cover of the water box to be inserted.

[0018] The heating component is located between the upper end face of the bottom cover of the water tank and the lower end face of the main body of the water tank, and a lower sealing ring is provided between it and the main body of the water tank, which is fixed by screws.

[0019] Preferably, the upper surface of the water box bottom cover has a plurality of ribs, and the upper surface of the ribs abuts against the heat insulation pad;

[0020] The bottom cover of the water tank is also provided with an insertion interface for the magnetic connector to be inserted.

[0021] Preferably, the top cover of the water box is fastened to the main body of the water box, and an upper sealing ring is provided at the connection point;

[0022] The water box body has a protruding latch on its outer wall, and the water box top cover has a buckle extending outward. The latch and the buckle are fastened together. In the fastened state, the bottom outer wall of the water box top cover abuts against the top inner wall of the water box body, and the upper sealing ring is nested in the outer wall of the water box top cover or the inner wall of the water box body at the abutting position.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] (1) This utility model combines the extended airflow channel and the heating component to achieve the effect of fully humidifying and warming the humidifying water box; wherein, the extension of the airflow channel is formed by adding a partition, so that the airflow and water vapor are mixed more fully, and the layout is simple and ingenious; the heating component is directly set at the bottom of the box to heat the water in the box, which is more energy-efficient and has higher heating efficiency.

[0025] (2) The slots on the separators are formed on opposite sides, which is an effective measure to extend the airflow channel and ensure that the height of the top of the slot is not lower than the highest water level in the box so that the airflow can flow smoothly. Furthermore, the height of the top surface of the airflow channel is gradually reduced from the gas inlet end to the gas outlet end, which is conducive to the airflow being closer to the water surface and the humidification effect is better.

[0026] (3) The water box body and the bottom cover of the water box are set as separate structures, which facilitates the installation of the heating components; the raised heating plate can not only meet the embedding fit with the water box body to achieve direct contact with water for heating, but also form a cavity between it and the heat insulation pad for the heating element to be accommodated, which facilitates the bonding of the heating element; among them, based on the direct heating of the heating plate and the setting of the heat insulation pad, the heat can be conducted to the water box to the maximum extent, reducing the heat dissipation into the air and effectively avoiding energy waste.

[0027] (4) The heating element is electrically connected to the magnetic connector to realize the power supply of the heating element and the transmission of temperature detection signal. The magnetic connector is directly embedded in the bottom cover of the water box. The layout is reasonable. After the overall structure is installed in the host, it can quickly connect to the host through the magnetic connector and quickly connect to the power supply line in the host. It is convenient to use and operate. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] Figure 1 This is a cross-sectional view of the humidification water box of a respiratory support device according to the present invention;

[0030] Figure 2 This is an exploded cross-sectional view of the humidification water box of a respiratory support device according to the present invention.

[0031] Figure 3 This is a schematic diagram of the structure of the humidification water box of a respiratory support device according to the present invention, in which the top cover of the water box and the main body of the water box are in a separate state.

[0032] Figure 4 This is an exploded view of the humidification water box of a respiratory support device according to the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the water box top cover of this utility model;

[0034] Figure 6 This is a diagram showing the airflow path in the top cover of the water box described in this utility model;

[0035] Figure 7 The heating assembly described in this utility model is in Figure 1 Enlarged cross-sectional view at point a in the image.

[0036] Among them: 1. Box body;

[0037] 11. Water tank top cover; 111. Air inlet; 112. Air outlet; 113. Buckle; 114. Upper sealing ring.

[0038] 12. Water box body; 121. Locking tongue; 122. Cavity; 123. Rib;

[0039] 13. Water tank bottom cover; 131. Rib; 132. Insert interface; 133. Screw;

[0040] 2. Divider;

[0041] 20. Airflow channel; 201. First flow channel; 202. Second flow channel; 203. Third flow channel;

[0042] 21. Outer ring separator; 22. Inner ring separator; 23. Groove;

[0043] 3. Heating components;

[0044] 31. Heat insulation pad; 32. Heating element; 33. Heating plate; 34. Magnetic connector; 35. Lower sealing ring; 36. Receiving cavity. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to specific embodiments:

[0046] Regarding the humidification water box of a respiratory support device, its application scenarios are first explained, including scenarios with high requirements for humidification and heating. It needs to be used in conjunction with the main unit, through which the heating temperature can be adjusted.

[0047] like Figure 1-4 As shown, a humidification water box for a respiratory support device includes a box body 1 and a heating component 3. An airflow channel 20 is formed inside the box body 1. Air can mix with water vapor as it flows along the airflow channel 20, thereby expelling the humidified air. Since the longer the distance the air travels in the box body 1, the better the mixing effect, this application needs to solve the problem of how to extend the airflow channel 20 in order to achieve sufficient mixing of air and water vapor. Secondly, the heating component 3 is used to heat the water in the box body 1 to further warm the air. Since the heating component 3 has the problem of heat loss, this application also needs to solve the installation layout problem of the heating component 3 in order to improve the heating efficiency.

[0048] The container 1 includes a water tank top cover 11, a water tank body 12, and a water tank bottom cover 13. An upper sealing ring 114 is provided between the water tank top cover 11 and the water tank body 12, and they are connected by a snap-fit ​​method. However, this connection is not limited to a snap-fit ​​method; for example, one end can be hinged and the other end can be snapped. A lower sealing ring 35 is provided between the water tank body 12 and the water tank bottom cover 13, and they are fixed together by screws. Regarding the above-mentioned snap-fit ​​connection method, such as... Figure 2 , Figure 3 As shown, the outer wall of the water box body 12 has a protruding latch 121, and the top cover 11 of the water box extends outward and is provided with a buckle 113. The latch 121 and the buckle 113 are fastened together. In the fastened state, the bottom outer wall of the top cover 11 of the water box abuts against the top inner wall of the water box body 12, and the upper sealing ring 114 is nested in the outer wall of the top cover 11 of the water box or the inner wall of the water box body 12 at the abutting position.

[0049] The outer wall of the water tank body 12 is provided with a maximum water level line (max) and a minimum water level line (min). A transparent viewing window can be set at the corresponding markings of the maximum and minimum water level lines to make it easy for users to clearly judge the specific water level in the tank body 1.

[0050] Combination Figure 3 , Figure 5As shown, the water tank top cover 11 is provided with an air inlet 111 and an air outlet 112. The air inlet 111 is located on the side wall of the water tank top cover 11, allowing gas to enter from the horizontal direction. The air outlet 112 is located on the top of the water tank top cover 11, allowing gas to flow out from the vertical direction. The lower end face of the water tank top cover 11 is constructed with one or more partitions 2, forming at least two inner and outer ring airflow channels 20. The air inlet 111 is directly connected to the airflow channel 20 in the outer ring, and the air outlet 112 is directly connected to the airflow channel 20 in the inner ring. At the same time, the partitions 2 are also provided with slots 23 for gas flow. The top height of the slots 23 on any partition 2 is not lower than the highest water level line inside the tank 1, ensuring that the gas can flow smoothly. When constructing multiple separators 2, the slots 23 on adjacent separators 2 are located on opposite sides, and the slots 23 on the outermost separator 21 are located on opposite sides of the air inlet 111. When the gas flows, the gas enters through the air inlet 111 and flows through the airflow channel 20 in sequence, and is discharged from the air outlet 112.

[0051] In this embodiment, as Figure 5 As shown, two separators 2 are provided, forming an outer ring separator 21 and an inner ring separator 22. The outer ring separator 21 and the inner ring separator 22 construct the airflow channel 20 into a first flow channel 201, a second flow channel 202, and a third flow channel 203 distributed sequentially from the outside to the inside. The shape of the outer ring separator 21 and the inner ring separator 22 is not limited; they can adopt a shape that is the same as or similar to the outline of the water box top cover 11, or an ellipse, etc. Among them, the slot 23 on the outer ring separator 21 is on the opposite side from the air inlet 111, and the slot 23 on the inner ring separator 22 is also on the opposite side from the slot 23 on the outer ring separator 21. Thus, when the air flows, it combines with... Figure 6 As shown, gas enters through the inlet 111 and flows to both sides when entering the first flow channel 201. It then enters the second flow channel 202 through the slot 23 on the outer ring separator 21, continues to flow to both sides when entering the second flow channel 202, and then enters the third flow channel 203 through the slot 23 on the inner ring separator 22. Finally, the humidified gas is collected through the third flow channel 203 and discharged through the outlet 112. Based on this, it can be clearly seen that by setting the separator 2, the airflow channel 20 can be extended within a limited space, satisfying the requirement for thorough mixing of air and water vapor.

[0052] As a further optimization of this embodiment, based on the gas flow path described above, for each airflow channel, taking the flow direction of the airflow within the airflow channel as a reference, each airflow channel corresponds to a gas inlet end and a gas outlet end; for example: Figure 6In the indicated orientation, for the first flow channel 201, gas flows from the inlet 111 to the slot 23 side of the outer ring separator 21. Therefore, the upper end of the first flow channel 201 is the gas inlet end, and the lower end is the gas outlet end. Correspondingly, for the second flow channel 202, its lower end is the gas inlet end, and its upper end is the gas outlet end. By ensuring that the top surface height of at least the outermost first flow channel 201 gradually decreases from the gas inlet end to the gas outlet end, the airflow is closer to the water surface, resulting in better humidification. Of course, a top surface height difference design can also be applied to both the second flow channel 202 and the third flow channel 203.

[0053] The heating component 3 is fixed to the bottom of the housing 1 and is used to heat the water inside the housing 1. More specifically, the heating component 3 is installed between the water tank body 12 and the water tank bottom cover 13, and is sealed by a lower sealing ring 35. Therefore, the water tank body 12 and the water tank bottom cover 13 have structures for installing the heating component 3, such as... Figure 2 , Figure 7 As shown, the lower end face of the water box body 12 has a cavity 122, and the bottom surface also has a downwardly protruding rib 123. The area enclosed by the cavity 122 and the rib 123 is used for the installation of the heating component 3 and the bottom cover 13 of the water box.

[0054] Combination Figure 1 , Figure 4 As shown, the heating assembly 3 includes a heat insulation pad 31, a heating element 32, and a heating plate 33 arranged sequentially from bottom to top; a sealed cavity 36 is formed between the heat insulation pad 31 and the heating plate 33 to accommodate the heating element 32; the heating plate 33 is used to directly contact the water in the box 1 and is heated by the heating element 32; a magnetic connector 34 electrically connected to the heating element 32 is also provided below the heat insulation pad 31 to supply power to the heating element 32 and realize the transmission of temperature detection signals.

[0055] More specifically, the heating plate 33 has a convex shape in the middle, forming a convex surface at the outer end and a concave surface at the inner end. Both the convex and concave surfaces are planar structures. The accommodating cavity 36 is formed between the upper end surface of the heat insulation pad 31 and the concave surface. The convex surface is embedded in the cavity 122 of the lower end surface of the water box body 12, allowing the heating plate 33 to directly contact the water in the box body 1. The concave surface is used for bonding the heating element 32. Based on the above, the convex shape of the heating plate 33 facilitates assembly and provides installation space for the heating element 32.

[0056] like Figure 7As shown, the heating plate 33 is attached to the heat insulation pad 31 around its periphery and is located between the upper end face of the water tank bottom cover 13 and the lower end face of the water tank body 12. At the same time, the lower sealing ring 35 is located between the lower end face of the water tank body 12 and the upper end face of the heating plate 33 around its periphery. The water tank bottom cover 13 is embedded in the area enclosed by the ribs 123, thereby covering the heating component 3 from below. Since the upper end face of the water tank bottom cover 13 has several ribs 131, the upper end face of the ribs 131 abuts against the heat insulation pad 31 in the assembled state. The setting of the heat insulation pad 31 can effectively reduce the heat loss.

[0057] After the water tank body 12, lower sealing ring 35, heating plate 33, heating element 32, heat insulation pad 31, and water tank bottom cover 13 are assembled, they are locked and fixed by several circumferentially arranged screws 133, thereby achieving a sealed installation of the heating device between the water tank body 12 and the water tank bottom cover 13. Since a magnetic connector 34 is provided below the heat insulation pad 31, in the assembled state, to ensure the proper placement of the magnetic connector 34, the water tank bottom cover 13 is also provided with an insertion interface 132 for the magnetic connector 34 to be inserted; when the overall structure of the humidification water tank of the breathing support device is installed in the main unit, it can be quickly connected to the power supply line in the main unit through the magnetic connector 34, making it convenient to use and operate.

[0058] In use, open the top cover 11 of the water tank and add an appropriate amount of water to the main body 12 of the water tank. The water level should not exceed the maximum water level line. Then, close the top cover 11 of the water tank. After the entire structure is installed into the main unit, connect the power supply line in the main unit through the magnetic connector 34. The heating element 32 is powered on and heats the water in the main body 12 of the water tank through the heating plate 33, promoting its evaporation. During the process, air also enters from the air inlet 111 and flows through the airflow channel 20. Due to the long path, the air and water vapor can be fully mixed. Finally, the gas discharged from the air outlet 112 can achieve the effect of humidification and warming. At the same time, during the operation, the direct heating of the heating plate 33 and the setting of the heat insulation pad 31 enable the heat to be conducted to the water tank to the maximum extent, reducing the heat dissipation into the air and effectively avoiding energy waste.

[0059] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A humidification water box for a respiratory support device, comprising a box body and a heating assembly; the box body includes an air inlet and an air outlet, through which gas enters and exits through the air inlet; the heating assembly is fixed to the bottom of the box body for heating the water inside the box body; characterized in that, The heating assembly includes a heat insulation pad, a heating element, and a heating plate arranged sequentially from bottom to top; a sealed cavity is formed between the heat insulation pad and the heating plate to accommodate the heating element; the heating plate is used to directly contact the water inside the box and is heated by the heating element; a magnetic connector electrically connected to the heating element is also provided below the heat insulation pad to supply power to the heating element and realize temperature detection signal transmission.

2. The humidification water box of a respiratory support device according to claim 1, characterized in that: The heating plate has a raised center and forms a raised surface at the outer end and a concave surface at the inner end; the heating plate is in contact with the heat insulation pad around its periphery, and the accommodating cavity is formed between the upper end surface of the heat insulation pad and the concave surface. The raised surface is in direct contact with the water inside the box, and the concave surface is used for bonding the heating element.

3. The humidification water box of a respiratory support device according to claim 2, characterized in that: The box body has one or more partitions inside, forming at least two airflow channels with inner and outer rings. The separator is formed on the top of the box body, the airflow channel in the outer ring is directly connected to the air inlet, and the airflow channel in the inner ring is directly connected to the air outlet. The separator is provided with a slot for gas flow. When multiple separators are constructed, the slots on adjacent separators are located on opposite sides, and the slots on the outermost separator are located on opposite sides of the air inlet.

4. The humidification water box of a respiratory support device according to claim 3, characterized in that: The top height of the slot on any of the partitions shall not be lower than the highest water level line inside the box.

5. The humidification water box of a respiratory support device according to claim 3, characterized in that: With reference to the direction of airflow within the airflow channels, each airflow channel has a gas inlet end and a gas outlet end. The height of the top surface of at least the outermost airflow channel gradually decreases from the gas inlet end to the gas outlet end.

6. The humidification water box of a respiratory support device according to claim 3, characterized in that: The box body includes a water box top cover, a water box body, and a water box bottom cover; The air inlet, air outlet and separator are formed on the top cover of the water tank; The heating component is installed between the water tank body and the water tank bottom cover and is sealed together.

7. The humidification water box of a respiratory support device according to claim 6, characterized in that: The lower end face of the water box body has a cavity for the protruding surface to be inserted; the bottom surface of the water box body also has downwardly protruding ribs, and the space enclosed by the ribs is for the bottom cover of the water box to be inserted. The heating component is located between the upper end face of the bottom cover of the water tank and the lower end face of the main body of the water tank, and a lower sealing ring is provided between it and the main body of the water tank, which is fixed by screws.

8. The humidification water box of a respiratory support device according to claim 7, characterized in that: The upper surface of the bottom cover of the water box has several ribs, and the upper surface of the ribs abuts against the heat insulation pad; The bottom cover of the water tank is also provided with an insertion interface for the magnetic connector to be inserted.

9. The humidification water box of a respiratory support device according to claim 8, characterized in that: The top cover of the water box is fastened to the main body of the water box, and an upper sealing ring is provided at the connection. The water box body has a protruding latch on its outer wall, and the water box top cover has a buckle extending outward. The latch and the buckle are fastened together. In the fastened state, the bottom outer wall of the water box top cover abuts against the top inner wall of the water box body, and the upper sealing ring is nested in the outer wall of the water box top cover or the inner wall of the water box body at the abutting position.

Images