Air duct assembly and medical warming blanket

Abstract

This utility model discloses an air duct assembly and a medical heating blanket, relating to the field of medical device technology. The air duct assembly includes a main unit, an air duct, and a waterproof seal. The main unit includes a housing and a fan. The housing has a cavity and an air outlet communicating with the cavity. The fan is located within the cavity and has an air outlet end exposed through the air outlet. One end of the air duct is connected to the air outlet end, and the other end is configured to connect to the medical heating blanket. The waterproof seal seals the end of the air duct near the air outlet and the outer wall of the housing, and is arranged around the air outlet. When the fan delivers hot air to the air duct, the presence of the waterproof seal, through deformation, fills the tiny gap between the air duct and the main unit housing, forming a sealing layer between them to prevent hot air leakage. It also provides a certain degree of waterproofing between the main unit housing and the air duct, improving the safety performance of the medical heating blanket.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a duct assembly and a medical heating blanket. Background Technology

[0002] Medical warming blankets are widely used in clinical medicine. They can address hypothermia during surgery by raising or maintaining body temperature, reducing the risk of hypothermia upon awakening. Simultaneously, they can shorten postoperative recovery time to some extent, thus promoting better postoperative recovery.

[0003] Existing medical heating blankets generally consist of an air duct, a main unit, and a blanket body. The main unit blows hot air into the blanket body through the air duct. However, the connection between the main unit and the air duct is prone to small gaps or loosening during use, resulting in air leakage and affecting the performance and safety of the medical heating blanket. Utility Model Content

[0004] The main purpose of this utility model is to propose a duct assembly and a medical heating blanket, which aims to solve the technical problem of air leakage caused by gaps between the duct and the main unit in related technologies.

[0005] To achieve the above objectives, the present invention provides a duct assembly, which includes:

[0006] The main unit includes a housing and a fan. The housing has a cavity and an air outlet communicating with the cavity. The fan is disposed inside the cavity and has an air outlet exposed through the air outlet.

[0007] The air duct has one end connected to the air outlet and the other end configured to connect to a medical heating blanket.

[0008] A waterproof seal is provided, which seals the connection between the end of the duct near the air outlet and the outer wall of the housing, and is arranged around the air outlet.

[0009] In one embodiment, one end of the fan is provided with an adapter, and the air outlet end is provided with a main unit connector. The portion of the main unit connector extending into the air outlet is connected to the adapter, and the portion of the main unit connector exposed at the air outlet is covered by the waterproof seal and connected to the air duct.

[0010] In one embodiment, the air outlet is provided with a main unit connector, the air duct includes an air duct body and an air duct fixing member, the air duct fixing member is connected to the air duct body and is located on the outside of the air duct body, the air duct fixing member is sleeved on the outside of the main unit connector and connected to the main unit connector.

[0011] In one embodiment, the duct further includes a duct connector, which is disposed within the duct fixing member. The main unit connector is connected to one end of the duct connector, and the duct body is sleeved on the other end of the duct connector.

[0012] In one embodiment, the duct fixing member protrudes radially to form a plurality of stop flanges, each of the stop flanges enclosing a limiting space for the duct connector and abutting against the circumferential wall of the duct connector.

[0013] In one embodiment, the inner wall of the duct fixing member is provided with an internal thread, and the outer wall of the main unit connector near the end of the duct fixing member is provided with an external thread, and the duct fixing member and the main unit connector are threadedly engaged.

[0014] In one embodiment, the housing is provided with two support plates and a connecting plate. The two support plates are respectively disposed on opposite side walls of the housing. The two ends of the connecting plate are respectively connected to the support plates. The fan is connected to the connecting plate.

[0015] In one embodiment, the opposite side walls of the outer shell are respectively provided with an opening penetrating through the side walls, the two support plates are respectively confined within one of the openings, and the two ends of the connecting plate are respectively connected to the support plates.

[0016] In one embodiment, the portion of the support plate exposed on the outer wall of the housing is flush with the surface of the housing.

[0017] This utility model also proposes a medical heating blanket, which includes:

[0018] Blanket body;

[0019] As described above, in the duct assembly, the blanket is connected to the end of the duct assembly away from the main unit.

[0020] The technical solution of this utility model involves placing a waterproof seal on the outside of the outer casing, close to the air outlet of the fan, and sealing the connection between the main unit casing and the air duct. When the fan delivers hot air to the air duct, the waterproof seal deforms to fill the tiny gap between the air duct and the main unit casing, forming a sealing layer between them to prevent hot air leakage. Simultaneously, the waterproof seal has a certain degree of waterproofing, providing a waterproof connection between the main unit casing and the air duct, thus improving the safety performance of the medical heating blanket. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the duct assembly provided by this utility model;

[0023] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 A schematic diagram of the outer shell provided for this utility model;

[0025] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0026] Figure 5 An exploded view of a portion of the structure of the duct assembly provided by this utility model.

[0027] Explanation of icon numbers:

[0028] 100. Duct assembly; 1. Main unit; 11. Housing; 11a. Air outlet; 11b. Opening; 12. Fan; 121. Main unit connector; 122. Adapter; 13. Support plate; 14. Connecting plate; 2. Duct; 21. Duct connector; 22. Duct fixing; 22a. Stop flange; 23. Duct body; 3. Waterproof seal.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a duct assembly 100.

[0034] Please see Figures 1 to 5 In one embodiment of the present invention, the air duct assembly 100 includes a main unit, an air duct, and a waterproof seal 3. The main unit includes a housing 11 and a fan 12. The housing 11 has a cavity and an air outlet 11a communicating with the cavity. The fan 12 is disposed in the cavity and has an air outlet end exposed through the air outlet 11a. One end of the air duct is connected to the air outlet end, and the other end of the air duct is configured to connect to a medical heating blanket. The waterproof seal 3 seals the end of the air duct near the air outlet 11a and the outer wall of the housing 11. The waterproof seal 3 is arranged around the air outlet 11a.

[0035] In this embodiment, it should be noted that the duct assembly 100 is used to connect to the blanket body of the medical heating blanket. The outer shell 11 is used to protect the internal components such as the fan 12 and to provide a platform for the installation and support of the fan 12 and other components. The outer shell 11 is made of sheet metal, and its material includes, but is not limited to, stainless steel, aluminum alloy, etc. The fan 12 is used to provide power to the duct assembly 100, driving airflow from the fan 12 through the duct to the medical heating blanket. Here, the fan 12 is in the form of a blower. The connection between the fan 12 and the cavity includes, but is not limited to, fixing the fan 12 to the mounting plate or bracket inside the cavity with screws; or providing a snap-fit ​​structure on the inner wall of the cavity or the mounting plate, fixing the fan 12 to the cavity with snap-fit, which is not limited here. The air outlet 11a connects the air outlet end of the fan 12 and the duct. Figure 2As can be seen, the air outlet of the fan 12 is exposed at the air outlet 11a and connected to one end of the air duct. The other end of the air duct is used to connect to the medical heating blanket. It should be noted that the waterproof seal 3 is of various types, including but not limited to rubber and waterproof silicone. It is arranged in a ring shape and seals the end of the air duct near the air outlet 11a to the outer wall of the outer casing 11. It is arranged around the air outlet 11a to effectively prevent moisture from seeping into the main unit from the connection between the air duct and the outer casing 11, avoiding damage to internal components such as the fan 12 due to moisture ingress, extending the service life of the main unit, and ensuring the stable operation of the equipment. One end of the duct is connected to the air outlet of the fan 12, and the other end is connected to the medical heating blanket. The sealing effect of the waterproof seal 3 makes the connection between the duct and the main unit housing 11, and between the duct and the medical heating blanket, more tight and stable. During use, there will be no air leakage or loosening, ensuring that air energy is stably and efficiently transmitted from the fan 12 through the duct to the medical heating blanket, providing a stable and continuous airflow to the medical heating blanket and ensuring its heating effect. It is understood that the waterproof seal 3 can be fixed to the outer wall of the housing 11 by means of adhesive bonding, snap-fit ​​connection, bolt connection, etc., and is not limited here. In one embodiment, the waterproof seal 3 can be fixed to the outer wall of the main unit housing 11 by adhesive bonding. In another embodiment, a groove is designed on the outer wall of the main unit housing 11, and a snap-fit ​​structure matching the groove is provided on the inner side of the waterproof seal 3.

[0036] The technical solution of this utility model involves placing a waterproof seal 3 on the outside of the outer casing 11, near the air outlet 11a of the fan 12, and simultaneously sealing the connection between the main casing 11 and the air duct. When the fan 12 delivers hot air to the air duct, the presence of the waterproof seal 3, through deformation, fills the tiny gap between the air duct and the main casing 11, forming a sealing layer between the casing 11 and the air duct to prevent hot air leakage. Simultaneously, the waterproof seal 3 possesses a certain degree of waterproofing, providing a waterproof function between the main casing 11 and the air duct, thus improving the safety performance of the medical heating blanket.

[0037] In one embodiment of this utility model, one end of the fan 12 is provided with an adapter 122, and the air outlet end is provided with a main unit connector 121. The part of the main unit connector 121 extending into the air outlet 11a is connected to the adapter 122, and the part of the main unit connector 121 exposed at the air outlet 11a is covered by the waterproof seal 3 and connected to the air duct.

[0038] In this embodiment, combined with Figure 2 and Figure 5To improve sealing performance, a waterproof seal 3 is located between the main unit connector 121 and the outer casing 11, effectively preventing moisture or dust from entering the main unit and protecting its internal components from damage. The fixed connection between the main unit connector 121 and the adapter 122, as well as the contact between the main unit connector 121 and the outer casing 11, ensures a more stable connection between the fan 12 and the main unit. Even if the fan 12 vibrates during operation, it will not easily loosen or detach, thus improving the reliability of the entire system. The connection design of the main unit connector 121 and the adapter 122 optimizes the airflow path, reduces airflow resistance and turbulence at the connection point, and improves the overall efficiency of the system. It should be noted that the fan 12 connects to the adapter 122, the adapter 122 connects to the main unit connector 121, and the main unit connector 121 connects to the duct, allowing the hot airflow from the fan 12 to be transferred to the duct. When the main unit connector 121 is connected to the adapter 122, the waterproof seal 3 is pressed between the main unit connector 121 and the outer casing 11. Through the connection between the adapter 122 and the main unit connector 121, the waterproof seal 3 is more firmly fixed between the end of the duct near the air outlet 11a and the outer casing 11. It is understood that the connection method between the adapter 122 and the main unit connector 121 includes, but is not limited to, machining corresponding threads on the main unit connector 121 and the adapter 122, and tightly connecting them by rotation. Sealant or rubber sealing rings can be used at the connection point to ensure sealing performance. Alternatively, threaded holes can be drilled on the adapter 122 and the main unit connector 121 respectively, and bolts or other fasteners can be passed through the threaded holes to tightly connect the two.

[0039] In one embodiment of this utility model, the air outlet is provided with a host connector 121, the air duct includes an air duct body 23 and an air duct fixing member 22, the air duct fixing member 22 is connected to the air duct body 23 and is located on the outside of the air duct body 23, the air duct fixing member 22 is sleeved on the outside of the host connector 121 and connected to the host connector 121.

[0040] In this embodiment, combined with Figure 5 It should be noted that the main unit connector 121, the duct body 23, and the duct fixing component 22 are tubular structures capable of transmitting airflow from the fan 12 to the blanket, etc. Combined with Figure 2To enhance the connection stability between the fan 12 and the duct, a duct fixing component 22 is fitted onto the outside of the main unit connector 121 and connected to it. This structure effectively prevents the duct from loosening or falling off due to vibration or airflow impact during operation, thereby improving the reliability of the entire system. Simultaneously, this split-type connection design makes duct installation and maintenance more convenient. When duct replacement or maintenance is required, simply loosen the duct fixing component 22 to easily remove the duct without complex disassembly of the main unit. This design significantly improves maintenance efficiency and reduces maintenance costs. It is understood that the connection methods between the main unit connector 121 and the duct fixing component 22 include, but are not limited to, bolt connections, threaded connections, and snap-fit ​​connections. Preferably, the main unit connector 121 and the duct fixing component 22 are connected by a threaded connection, as detailed in the following embodiment. In one embodiment, matching snap-fit ​​structures are designed on the main unit connector 121 and the duct connector 21, connecting them through the cooperation of the snap-fit ​​and the slot. Figure 2 It should be noted that the connection method between the duct body 23 and the duct fastener 22 includes, but is not limited to, bonding and threaded connection. Bonding is preferred here, using adhesives, glass glue, epoxy AB glue, etc., and is not limited here. In one embodiment, the duct fastener 22 is directly sleeved on the duct body 23; in another embodiment, the duct fastener 22 is sleeved on the duct body 23 and further fixed by bonding.

[0041] In one embodiment of the present invention, the duct also includes a duct connector 21, which is disposed inside the duct fixing member 22. The main unit connector 121 is connected to one end of the duct connector 21, and the duct body 23 is sleeved on the other end of the duct connector 21.

[0042] In this embodiment, combined with Figure 2 and Figure 5 It should be noted that the duct connector 21, as an intermediate connector, can effectively enhance the airflow transmitted from the main unit connector 121 to the duct. The end of the duct connector 21 closest to the main unit connector 121 is adapted to the shape of the main unit connector 121, i.e., a tubular structure, so as to better guide the airflow smoothly from the main unit into the duct connector 21. Combined with... Figure 2 The connection port of the duct connector 21 gradually tapers from the end closest to the main unit connector 121 to the end furthest from the main unit connector 121. This ensures that the airflow entering the duct connector 21 does not generate excessive resistance or turbulence due to abrupt changes in shape, thereby improving the efficiency of airflow transmission. At the same time, this structure also helps to reduce vibrations caused by airflow impact, further enhancing the stability and reliability of the entire system.

[0043] In one embodiment of the present invention, the duct fixing member 22 protrudes radially to form a plurality of stop flanges 22a, and each stop flange 22a surrounds to form a limiting space for the duct connector 21 and abuts against the circumferential wall of the duct connector 21.

[0044] In this embodiment, combined with Figure 5 To achieve precise positioning of the duct connector 21 and the duct fastener 22, multiple stop flanges 22a are formed radially protruding from the side of the duct fastener 22 where it connects to the duct connector 21. This precisely limits the position of the duct connector 21, ensuring its stability in the axial and circumferential directions and preventing displacement or loosening during operation. The design of the stop flanges 22a enhances the structural stability between the duct fastener 22 and the duct connector 21, making the entire duct assembly 100 more robust and able to withstand certain pressure and vibration. It is understood that the stop flanges 22a can be manufactured through processes such as injection molding, which is not limited here.

[0045] In one embodiment of this utility model, the inner wall of the duct fixing member 22 is provided with an internal thread, and the outer wall of the main unit connector 121 near the duct fixing member 22 is provided with an external thread, and the duct fixing member 22 and the main unit connector 121 are threadedly engaged.

[0046] In this embodiment, combined with Figure 5 To enhance the connection stability between the duct and the main unit, the inner wall of the duct fixing part 22 is provided with an internal thread, and the outer wall of the main unit connector 121 is provided with an external thread. The connection stability between the duct and the main unit is further enhanced by the threaded connection method of the internal thread and the external thread.

[0047] In one embodiment of the present invention, the outer shell 11 is provided with two support plates 13 and a connecting plate 14. The two support plates 13 are respectively provided on the two opposite inner side walls of the outer shell 11, and the two ends of the connecting plate 14 are respectively connected to the support plates 13. The fan 12 is connected to the connecting plate 14.

[0048] In this embodiment, combined with Figure 3 and Figure 4To ensure a more stable connection between the fan 12 and the outer casing 11, two support plates 13 are provided on the inner wall of the outer casing 11. The fan 12 is connected and fixed to the outer casing 11 via a connecting plate 14 and the two support plates 13. The support plates 13 provide stable support for the connecting plate 14 and the fan 12, and the connecting plate 14 is used to fix the fan 12 to the support plates 13. It is understood that the support plates 13 can be connected to the outer casing 11 by welding, bolting, or integral molding. The connection methods between the connecting plate 14 and the support plates 13 include, but are not limited to, bolting, snap-fitting, and plugging; bolting is preferred here. In one embodiment, a support plate 13 protrudes from the two opposite inner sidewalls of the outer casing 11. The two support plates 13 form a platform for connecting the connecting plate 14. The connecting plate 14 and the support plate 13 are fixed by bolts. A first through hole is opened in the middle of the connecting plate 14, and a corresponding second through hole is opened in the casing of the fan 12. The fan 12 is fixed by fasteners such as bolts and rivets passing through the first and second through holes, respectively. The above arrangement, with the connecting plate 14 and the support plate 13 connected, ensures that the fan 12 will not easily shake or shift during operation by utilizing the structural stability of the support plate 13 and the inner sidewall of the outer casing 11. This improves the reliability of the entire device and reduces the risk of deformation or damage to the outer casing 11 caused by the vibration of the fan 12.

[0049] In one embodiment of the present invention, the outer shell 11 has an opening 11b through its side walls on opposite sides, the two support plates 13 are respectively confined within the opening 11b, and the two ends of the connecting plate 14 are respectively connected to the support plates 13.

[0050] In this embodiment, combined with Figure 4 The outer casing 11 has an opening 11b penetrating the side wall of the outer casing 11. The support plate 13 is confined within the opening 11b, and the support plate 13 abuts against the inner peripheral wall of the opening 11b. The support plate 13 is further fixed within the opening 11b by welding. It is understood that the shape and size of the opening 11b are adapted to the thickness of the support plate 13 so that there are no other gaps after the support plate 13 is confined within the opening 11b. Nuts are riveted to the side of the support plate 13 facing away from the connecting plate 14. The connecting plate 14 is first bolted to the casing of the fan 12. After the connecting plate 14 is connected to the fan 12, the connecting plate 14 is fixed to the support plate 13 by bolting, and nuts are threaded through the support plate 13 and onto the side of the support plate 13 facing away from the connecting plate 14 to make the connection between the support plate 13 and the connecting plate 14 more stable.

[0051] In one embodiment of the present invention, the portion of the support plate 13 exposed on the outer side wall of the outer shell 11 is flush with the surface of the outer shell 11.

[0052] In this embodiment, for aesthetic purposes, the portion of the support plate 13 exposed on the outer casing 11 is flush with the surface of the outer casing 11, so that the support plate 13 does not protrude from the outer casing 11 of the main unit, thereby avoiding injury to the user during the use of the main unit.

[0053] This utility model also proposes a medical heating blanket, which includes a blanket body and an air duct assembly 100 as described above. The specific structure of the air duct assembly 100 is as described in the above embodiments. Since this medical heating blanket adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The blanket body is connected to the end of the air duct assembly 100 away from the main unit.

[0054] In this embodiment, it should be noted that an airflow channel is formed inside the blanket, and a vent is provided on one side to connect the airflow channel. The end of the air duct away from the main unit is connected to the vent, so that the hot airflow generated by the fan 12 is transmitted to the blanket through the air duct to achieve the heating function.

[0055] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A duct assembly, characterized in that, The duct assembly includes: The main unit includes a housing and a fan. The housing has a cavity and an air outlet communicating with the cavity. The fan is disposed inside the cavity and has an air outlet exposed through the air outlet. The air duct has one end connected to the air outlet and the other end configured to connect to a medical heating blanket. A waterproof seal is provided, which seals the connection between the end of the duct near the air outlet and the outer wall of the housing, and is arranged around the air outlet.

2. The duct assembly as described in claim 1, characterized in that, One end of the fan is provided with an adapter, and the air outlet end is provided with a main unit connector. The part of the main unit connector that extends into the air outlet is connected to the adapter. The part of the main unit connector that is exposed at the air outlet is covered by the waterproof seal and connected to the air duct.

3. The duct assembly as described in claim 1, characterized in that, The air outlet is provided with a main unit connector. The air duct includes an air duct body and an air duct fixing component. The air duct fixing component is connected to the air duct body and is located on the outside of the air duct body. The air duct fixing component is sleeved on the outside of the main unit connector and is connected to the main unit connector.

4. The duct assembly as described in claim 3, characterized in that, The duct also includes a duct connector, which is located inside the duct fixing component. The main unit connector is connected to one end of the duct connector, and the duct body is sleeved on the other end of the duct connector.

5. The duct assembly as described in claim 4, characterized in that, The duct fixing member protrudes radially to form multiple stop flanges, and each stop flange surrounds a limiting space for the duct connector and abuts against the circumferential wall of the duct connector.

6. The duct assembly as described in claim 3, characterized in that, The inner wall of the duct fixing component is provided with an internal thread, and the outer wall of the main unit connector near the duct fixing component is provided with an external thread. The duct fixing component and the main unit connector are threadedly engaged.

7. The duct assembly as described in claim 1, characterized in that, The outer casing is provided with two support plates and a connecting plate. The two support plates are respectively located on opposite side walls of the outer casing. The two ends of the connecting plate are respectively connected to the support plates. The fan is connected to the connecting plate.

8. The duct assembly as described in claim 7, characterized in that, The outer shell has an opening through its side walls on opposite sides, and the two support plates are respectively confined within one of the openings.

9. The duct assembly as described in claim 8, characterized in that, The portion of the support plate exposed on the outer wall of the housing is flush with the surface of the housing.

10. A medical heating blanket, characterized in that, The medical heating blanket includes: Blanket body; The duct assembly as described in any one of claims 1 to 9, wherein the blanket is connected to one end of the duct assembly away from the main unit of the duct assembly.

Images