Ventilation system and magnetic resonance imaging equipment

Abstract

The utility model discloses a ventilation system and magnetic resonance imaging equipment. The ventilation system comprises a bed body and an air supply assembly. The bed body comprises a bed panel and a coil assembly arranged in the bed panel, the bed surface of the bed panel comprises a lying area, the lying area is used for placing a patient, the coil assembly is located below the bed surface, the area where the coil assembly is located corresponds to the lying area, and the coil assembly comprises a plurality of coils arranged in the length direction of the bed panel; the bed surface is provided with an air outlet positioned on the side of the lying area; an air outlet of the air supply assembly communicates with the exhaust outlet, and the air supply assembly is used for providing airflow for the exhaust outlet. The air flow in the examination cabin can be enhanced, so that the dryness and heat feeling of a patient caused by tension can be weakened or even eliminated, and the comfort of the patient is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical equipment, and in particular to a ventilation system and a magnetic resonance imaging device. Background Art

[0002] Magnetic resonance (MR) imaging equipment is an imaging examination equipment that uses the principle of nuclear magnetic resonance and is widely used in the medical field. Magnetic resonance imaging equipment generally includes a bed and a magnet assembly. The magnet assembly has an examination chamber. When providing examination for the patient, the patient lies on the bed, and the bed and the patient are pushed into the examination chamber for examination.

[0003] However, the space in the examination chamber is generally small, resulting in poor air circulation in the examination chamber. When the patient is examined in the examination chamber, he may feel hot and dry due to tension, which may cause the patient to feel uncomfortable. Utility Model Content

[0004] The present application provides a ventilation system and a magnetic resonance imaging device, which can enhance the air flow in the examination chamber, thereby reducing or even eliminating the patient's feeling of heat caused by tension, thereby improving the patient's comfort.

[0005] In a first aspect, the present application provides a ventilation system for use in magnetic resonance imaging equipment, the ventilation system comprising: a bed body, comprising a bed panel and a coil assembly arranged in the bed panel, the bed surface of the bed panel comprising a lying area, the lying area being used to place a patient, the coil assembly being located below the bed surface, and the area where the coil assembly is located corresponds to the lying area, the coil assembly comprising a plurality of coils arranged along the length direction of the bed panel, the bed surface being provided with an exhaust port located on the side of the lying area; an air supply assembly, the air outlet of the air supply assembly being connected to the exhaust port, the air supply assembly being used to provide airflow to the exhaust port.

[0006] In a second aspect, the present application further provides a magnetic resonance imaging device, comprising a magnet assembly and a ventilation system as described in any one of the above embodiments.

[0007] The beneficial effects of the present application are as follows: after the bed and the patient are pushed into the examination chamber together, air can be blown to the exhaust port through the air supply assembly, so that a stable airflow can be provided for the examination chamber through the exhaust port, and the air flow will drive the air flow in the examination chamber when the air flow flows, which can strengthen the air flow in the examination chamber, thereby enhancing the exchange efficiency between the air in the examination chamber and the outside air, thereby reducing or even eliminating the feeling of dryness and heat caused by tension of the patient, and the air flow can also take away the heat dissipated by the patient when it flows, which can prevent the patient's body temperature from being too high, and can effectively prevent the patient from feeling uncomfortable due to the feeling of dryness and heat, thereby improving the patient's comfort; in addition, when the patient lies on the bed surface of the bed panel, the patient's body is located in the lying area, and the exhaust port is arranged in the area on the side of the lying area, which can prevent the patient's body from blocking the exhaust port when lying on the bed surface, resulting in the exhaust port being unable to discharge air normally, and can also avoid setting too many openings in the lying area resulting in insufficient structural strength of the lying area. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 This is a structural schematic diagram of a ventilation system in one embodiment of the present application;

[0010] Figure 2 This is a schematic diagram of a patient lying on a lying area of ​​a bed panel in an embodiment of the present application;

[0011] Figure 3 This is a schematic structural diagram of a bed panel in one embodiment of the present application at a first viewing angle;

[0012] Figure 4 This is a schematic structural diagram of a bed panel in another embodiment of the present application at a second viewing angle;

[0013] Figure 5 This is a schematic structural diagram of a bed panel in another embodiment of the present application at a first viewing angle;

[0014] Figure 6 This is a partial structural diagram of the air duct structure in one embodiment of the present application;

[0015] Figure 7 Schematic diagram of the structure of a magnetic resonance imaging device in one embodiment of the present application.

[0016] Reference numerals:

[0017] 10. Bed body; 11. Bed panel; 111. Lying area; 111a. Head area; 111b. Torso area; 111c. Leg area; 111d. Foot area; 12. First center line; 112. Exhaust vent group; 112a. First exhaust vent; 112b. Second exhaust vent; 112c. Third exhaust vent; 112d. Fourth exhaust vent; 121. Head coil; 122. Torso coil; 123. Leg coil; 124. Foot coil; 20. Air supply assembly; 21. Fan; 22. Air pipe; 221. Air outlet; 23. Filter; 30. Air duct structure; 31. Air guide channel; 32. Drainage air duct; 321. First wall; 322. Second wall; 33. Main road; 41. Coil interface; 50. Magnet assembly. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0019] The present application provides a ventilation system and a magnetic resonance imaging device to solve the problem that the space in the examination chamber of the magnetic resonance imaging device is generally small, resulting in poor air circulation in the examination chamber. When patients are examined in the examination chamber, they may feel hot and dry due to tension, which may cause the patients to feel uncomfortable.

[0020] In a first aspect, the present application provides a ventilation system, which is applied to a magnetic resonance imaging device, such as Figure 1 and Figure 2 As shown, the ventilation system includes a bed body 10 and an air supply component 20.

[0021] Specifically, the bed body 10 includes a bed panel 11 and a coil assembly arranged in the bed panel 11. The bed surface of the bed panel 11 includes a lying area 111. The lying area 111 is used to place the patient. The lying area 111 is an area on the bed surface for the patient to lie. The bed panel 11 as a whole can be in the shape of a rectangular parallelepiped. When providing examination for the patient, the patient lies on the lying area 111 of the bed panel 11, and then the bed body 10 and the patient can be pushed into the examination chamber for examination; the coil assembly is located below the bed surface, and the area where the coil assembly is located corresponds to the lying area 111. The coil assembly The component includes multiple coils arranged along the length direction of the bed panel 11. The coil can be a receiving coil, which is used to receive magnetic resonance signals. The specific working principles of the coil and the magnetic resonance imaging equipment have been disclosed in the relevant technology and will not be elaborated in this application. The area where the coil assembly is located corresponds to the lying area 111, which means that the orthographic projection of the coil assembly on the bed surface is located in the lying area 111. The shape, size, area and region of the lying area 111 can be selected according to factors such as the type of magnetic resonance imaging equipment, the size of the bed surface, the number and size of the coils, etc.

[0022] The bed surface is provided with an exhaust port located on the side of the lying area 111, and an air outlet 221 (such as Figure 3 ) is connected to the exhaust port, and the air supply component 20 is used to provide airflow to the exhaust port. It can be understood that the air supply component 20 is a component for generating airflow, and the airflow generated by the air supply component 20 is discharged to the exhaust port through the air outlet 221, thereby providing airflow for the exhaust port.

[0023] It should be noted that after the bed body 10 and the patient are pushed into the examination chamber together, air can be blown to the exhaust port through the air supply assembly 20, so that a stable airflow can be provided for the examination chamber through the exhaust port. When the airflow flows, it will drive the air flow in the examination chamber, which can strengthen the air flow in the examination chamber, thereby enhancing the exchange efficiency between the air in the examination chamber and the outside air, thereby reducing or even eliminating the feeling of heat caused by tension of the patient, and when the airflow flows, it can also take away the heat dissipated by the patient, thereby preventing the patient's body temperature from being too high, and effectively preventing the patient from feeling uncomfortable due to the feeling of heat, thereby improving the patient's comfort; in addition, when the patient lies on the bed surface of the bed panel 11, the patient's body is located in the lying area 111, and the exhaust port is arranged in the area on the side of the lying area 111, which can prevent the patient's body from blocking the exhaust port when lying on the bed surface, resulting in the exhaust port being unable to discharge air normally, and can also avoid setting too many openings in the lying area 111, resulting in insufficient structural strength of the lying area 111.

[0024] Continue to see Figure 1 and Figure 2As shown, in some embodiments of the present application, an exhaust port group 112 is provided on the bed surface and is located on the side of the lying area 111. The exhaust port group 112 and the lying area 111 are arranged along the width direction of the bed panel 11. The exhaust port group 112 includes a plurality of exhaust ports, and the plurality of exhaust ports in the exhaust port group 112 are arranged at intervals along the length direction of the bed panel 11. It can be understood that the plurality of exhaust ports can further enhance the air flow in various places in the examination chamber, and when the patient lies on the bed surface of the bed panel 11, the length direction of the patient's body is parallel to the length direction of the bed panel 11. At this time, the exhaust port group 112 is located on the side of the patient's body, and exhaust ports are provided at positions corresponding to the plurality of parts of the patient's body, so that the plurality of exhaust ports can take away the heat dissipated from different parts of the patient's body (such as the head, trunk and legs, etc.) when the air is discharged, thereby further improving the overall comfort of the patient.

[0025] Furthermore, a set of exhaust vents 112 is provided on one side of the lying area 111 along the width direction of the bed panel 11, and another set of exhaust vents 112 is provided on the other side of the lying area 111 along the width direction of the bed panel 11, so that when the patient lies on the bed surface of the bed panel 11, exhaust vents are provided on both sides of the patient, which can further enhance the air flow in the inspection chamber. Furthermore, the two sets of exhaust vents 112 are symmetrical about the first center line 12 of the bed surface, and the extension direction of the first center line 12 is parallel to the length direction of the bed panel 11. It can be understood that the first center line 12 is the line connecting the midpoints of the two short sides of the bed surface, and each exhaust vent in the two sets of exhaust vents 112 can be symmetrically distributed about the first center line 12, so that the exhaust vents are distributed more evenly, thereby making the airflow in the inspection chamber more uniform and stable. It should also be noted that, in a specific implementation, in addition to providing exhaust vents on the sides of the bed panel 11 in the width direction, exhaust vents may also be provided on the sides of the bed panel 11 in the length direction to enhance air flow in various locations within the inspection chamber.

[0026] Continue to see Figure 2 As shown, in one embodiment, the lying area 111 includes a head area 111a, a torso area 111b, a leg area 111c and a foot area 111d which are arranged in sequence along the length direction of the bed panel 11, the head area 111a is used to place the patient's head, the torso area 111b is used to place the patient's torso, the leg area 111c is used to place the patient's legs, and the foot area 111d is used to place the patient's feet.

[0027] Among them, an exhaust port is arranged on the side of at least one of the head area 111a, the trunk area 111b, the leg area 111c and the foot area 111d. It can be understood that the exhaust port is arranged on the side of the head area 111a, which can strengthen the air flow in the head area 111a and prevent the patient from having difficulty breathing; the exhaust port is arranged on the side of the trunk area 111b, the leg area 111c and the foot area 111d, which can strengthen the air flow in the corresponding parts of the patient's body (the trunk area 111b, the leg area 111c and the foot area 111d), which can effectively relieve the patient's feeling of dryness and heat.

[0028] It should also be noted that, considering the differences in height and body shape of patients, the specific location and number of the exhaust vents can be selected according to actual needs. Exhaust vents can be set only on the side of one of the head area 111a, the torso area 111b, the leg area 111c and the foot area 111d, or only on the side of two, three or four of the head area 111a, the torso area 111b, the leg area 111c and the foot area 111d. Generally speaking, when the length of the bed panel 11 is greater than 1.6 meters and less than 1.8 meters, it can be considered to set exhaust vents only on the side of the head area 111a, the torso area 111b, the leg area 111c and the foot area 111d. Exhaust vents are arranged on the sides of the head area 111a, the torso area 111b and the leg area 111c; when the length of the bed panel 11 is less than 1.9 meters, exhaust vents can be arranged on the sides of the head area 111a, the torso area 111b, the leg area 111c and the foot area 111d; in magnetic resonance imaging equipment used in some special scenarios, such as magnetic resonance imaging equipment used in animal examination scenarios, the bed panel 11 is generally short (generally less than 1.6 meters), and it can be considered to arrange exhaust vents only on the sides of the torso area 111b.

[0029] Further, exhaust ports may be provided on both sides of the head area 111a along the width direction of the bed panel 11, so as to further strengthen the airflow in the head area 111a. Exhaust ports may be provided on both sides of the trunk area 111b along the width direction of the bed panel 11, so as to further strengthen the airflow in the trunk area 111b. Exhaust ports may be provided on both sides of the leg area 111c along the width direction of the bed panel 11, so as to further strengthen the airflow in the leg area 111c. Exhaust ports may be provided on both sides of the foot area 111d along the width direction of the bed panel 11, so as to further strengthen the airflow in the foot area 111d.

[0030] Continue to see Figure 2As shown, in one embodiment, the multiple coils include a head coil 121, the head area 111a corresponds to the area where the head coil 121 is located, and the exhaust port located on the side of the head area 111a is the head exhaust port. It can be understood that the head coil 121 is a coil among the multiple coils that is arranged corresponding to the head area 111a, and the area where the head coil 121 is located corresponds to the head area 111a, which means that the orthographic projection of the head coil 121 on the bed surface is located in the head area 111a, and the position, shape and size of the head area 111a are selected based on the head coil 121.

[0031] In one embodiment, the distance between the head exhaust port and the head area 111a along the width direction of the bed panel 11 is M1, 15 mm ≤ M1 ≤ 80 mm. When M1 is less than 15 mm, the distance between the head exhaust port and the head area 111a is too small, and the head exhaust port is easily blocked by the patient's body; when M1 is greater than 80 mm, the distance between the head exhaust port and the head area 111a is too large, which will cause the bed panel 11 to have a larger width to set the head exhaust port. M1 can be 15 mm, 30 mm, 50 mm, 65 mm, 80 mm or other values.

[0032] In one embodiment, the multiple coils may further include a trunk coil 122, a leg coil 123, and a foot coil 124, the trunk area 111b corresponds to the area where the trunk coil 122 is located, the leg area 111c corresponds to the area where the leg coil 123 is located, and the foot area 111d corresponds to the area where the foot coil 124 is located. It can be understood that the trunk coil 122 is a coil corresponding to the trunk area 111b among the multiple coils, the leg coil 123 is a coil corresponding to the leg area 111c among the multiple coils, and the foot coil is a coil corresponding to the foot area among the multiple coils.

[0033] In one embodiment, the head area 111a has a lower boundary, and the distance between the center of the head air outlet and the lower boundary along the length direction of the bed panel 11 is M2. The length of the head area 111a along the length direction of the bed panel 11 is N, and M2 ≥ (90 + (N / 3)) mm. It should be noted that the lower boundary refers to the boundary of the head area 111a on the side close to the trunk area 111b. The distance between the ear and the chin of the human body is generally about 1 / 3 of the length of the head. When the patient's head is located in the head area 111a, the distance between the patient's ear and the lower boundary is generally N / 3. By setting M2 ≥ (90 + (N / 3)) mm, the distance between the center of the head air outlet and the patient's ear can be greater than or equal to 90 mm, so that the center of the head air outlet and the patient's ear have a sufficient distance, which can prevent the head air outlet from being too close to the patient's ear, causing the air flow to enter the ear, and can also reduce the discomfort caused by the wind noise to the patient. Among them, the specific values ​​of N and M2 can be selected according to actual needs.

[0034] In one embodiment, in a group of exhaust ports 112, the spacing between two adjacent exhaust ports along the length direction of the bed panel 11 is greater than or equal to 0.1 times the sum of the lengths of the two adjacent exhaust ports along the length direction of the bed panel 11. It can be understood that the airflow discharged from the exhaust port is diffused around the exhaust port. In this embodiment, by making the spacing between two adjacent exhaust ports too small (less than 0.1 times the sum of the lengths of the two adjacent exhaust ports along the length direction of the bed panel 11), the airflows discharged from the two adjacent exhaust ports will impact each other, causing the airflow to be dispersed, thereby causing the flow capacity of the airflow to deteriorate. In this embodiment, the spacing between the two adjacent exhaust ports is designed to be larger, which can prevent the airflows discharged from the two adjacent exhaust ports from affecting each other. Among them, the spacing between the two adjacent exhaust ports along the length direction of the bed panel 11 can be 0.1 times, 0.5 times, 0.7 times or other multiples of the sum of the lengths of the two adjacent exhaust ports along the length direction of the bed panel 11.

[0035] like Figure 3 As shown, in some embodiments of the present application, a duct structure 30 is provided below the bed surface, and the duct structure 30 is surrounded to form an air guide channel 31, and the exhaust port is connected to the air outlet 221 through the air guide channel 31. The duct structure 30 is also provided with a drainage duct 32 corresponding to the exhaust port, and the exhaust port is connected to the duct channel 31 through the corresponding drainage duct 32. It can be understood that the air guide channel 31 can extend along the length direction of the bed panel 11, and the drainage duct 32 can extend vertically. The air outlet 221 of the air supply component 20 is connected to the drainage duct 32 through the air guide channel 31. After the airflow discharged from the air outlet 221 enters the air guide channel 31, the airflow in the air guide channel 31 is guided to the corresponding exhaust port by the drainage duct 32 and discharged through the exhaust port. The air duct structure 30 may be a pipeline structure formed in the inner cavity of the bed 10 by splicing a plurality of partitions and other structures, or may be a pipeline structure formed in the inner cavity of the bed 10 using conduits such as air ducts.

[0036] Specifically, a coil interface 41 is provided on the bed surface and is located on the side of the lying area 111. The distance between the exhaust port and the coil interface 41 along the length direction of the bed panel 11 is M3. It can be understood that the coil interface 41 is an interface electrically connected to the coil. The coil interface 41 can connect the coil to other devices, and one coil interface 41 can correspond to one coil.

[0037] In one embodiment, M3≥24 mm, so that there is a sufficient distance between the exhaust port and the coil interface 41, thereby preventing the setting of the exhaust port from affecting the routing of the coil interface 41, wherein M3 can be 24 mm, 30 mm, 50 mm or other values. In another embodiment, M3≥(20+t) mm, t is the wall thickness of the air duct structure 30, so that there is a sufficient distance between the exhaust port and the coil interface 41, thereby preventing the setting of the exhaust port from affecting the routing of the coil interface 41; when the air duct structure 30 is a pipeline structure formed by splicing multiple partitions and other structures in the inner cavity of the bed 10, t is the plate thickness of the partitions and other structures; when the air duct structure 30 is a pipeline structure formed in the inner cavity of the bed 10 using a conduit such as an air duct, t is the wall thickness of the conduit, and the specific value of t can be selected according to actual needs.

[0038] In some embodiments of the present application, the area of ​​the exhaust port is s, the cross-sectional area of ​​the drainage air duct 32 is S, s≤0.95*S, the area of ​​the exhaust port is smaller than the cross-sectional area of ​​the drainage air duct 32, so that the exhaust port is smaller than the cross-sectional area of ​​the drainage air duct 32, and the flow rate of the airflow passing through the exhaust port is faster, which can increase the intensity of the airflow discharged from the exhaust port. Wherein, s can be 0.95S, 0.98S or other multiples of S.

[0039] Continue to see Figure 3 As shown, in some embodiments of the present application, the air duct structure 30 is surrounded to form an air guide channel 31, the air guide channel 31 is connected to the air outlet 221, and multiple drainage air ducts 32 are all connected to one air guide channel 31. It can be understood that in this embodiment, only one air guide channel 31 is provided, and all drainage air ducts 32 are connected to the air outlet 221 of the air supply component 20 through one air guide channel 31, which can reduce the number of air guide channels 31 and reduce the volume occupied by the air duct structure 30.

[0040] In one embodiment, the multiple exhaust outlets in the exhaust outlet group 112 include a first exhaust outlet 112a, a second exhaust outlet 112b, a third exhaust outlet 112c and a fourth exhaust outlet 112d. The first exhaust outlet 112a, the second exhaust outlet 112b, the third exhaust outlet 112c and the fourth exhaust outlet 112d are arranged in sequence along the length direction of the bed panel 11, and the connecting position of the air outlet 221 and the air guide channel 31 is located at one end of the air guide channel 31 close to the first exhaust outlet 112a. It can be understood that the connecting position between the air outlet 221 and the air guide channel 31 is the airflow input end of the air guide channel 31. After the airflow discharged from the air outlet 221 enters the air guide channel 31 through the airflow input end, when the airflow in the air guide channel 31 flows along the air guide channel 31, the airflow is sequentially diverted to the first exhaust port 112a, the second exhaust port 112b, the third exhaust port 112c and the fourth exhaust port 112d by the guide air duct 32 corresponding to the first exhaust port 112a, the second exhaust port 112b, the third exhaust port 112c and the fourth exhaust port 112d.

[0041] Among them, the distance between the first exhaust port 112a and the second exhaust port 112b along the length direction of the bed panel 11 is L1, the distance between the third exhaust port 112c and the second exhaust port 112b along the length direction of the bed panel 11 is L2, and the distance between the fourth exhaust port 112d and the third exhaust port 112c along the length direction of the bed panel 11 is L3, L3<L2<L1. It should be noted that, in the process of the air flow flowing along the air guide channel 31, the intensity of the air flow will be attenuated to a certain extent, and the farther the area is from the air flow input end, the greater the degree of attenuation of the air flow intensity, thereby causing the intensity of the air flow guided to the first exhaust port 112a, the second exhaust port 112b, the third exhaust port 112c and the fourth exhaust port 112d to decrease in sequence. In this embodiment, the distance between two adjacent exhaust ports that are farther from the air flow input end along the length direction of the bed panel 11 is smaller (L3<L2<L1), so that the air flow discharged from the fourth exhaust port 112d and other exhaust ports that are farther away from the air flow input end still has sufficient intensity, and the difference in the intensity of the air flow discharged from each exhaust port can be reduced, so that the air flow in various places in the inspection chamber is more uniform.

[0042] Furthermore, the first exhaust vent 112a is located on the side of the head area 111a, the second exhaust vent 112b is located on the side of the torso area 111b, the third exhaust vent 112c is located on the side of the leg area 111c, and the fourth exhaust vent 112d is located on the side of the foot area 111d; it should be noted that according to the relevant data on the statistical size of Chinese adults in the Chinese national standard GB / T 10000-2023, the distance between the head and torso of an adult human body is mostly 340 mm to 660 mm, the distance between the torso and the legs is mostly 300 mm to 620 mm, and the distance between the legs and the feet is mostly 280 mm to 580 mm. Therefore, it can be designed as 340 mm ≤ L1 ≤ 660 mm, 300 mm ≤ L2 ≤ 620 mm, and 280 mm ≤ L3 ≤ 580 mm. On the basis of ensuring that the spacing between adjacent exhaust vents gradually changes, the design position of each exhaust vent can be set corresponding to each area of ​​the body of most people.

[0043] Furthermore, 400 mm ≤ L1 ≤ 500 mm, 320 mm ≤ L2 ≤ 400 mm, 320 mm ≤ L3 ≤ 400 mm, wherein L1 may be 400 mm, 450 mm, 500 mm or other values, L2 may be 320 mm, 360 mm, 400 mm or other values, and L3 may be 320 mm, 360 mm, 400 mm or other values.

[0044] Continue to see Figure 3 As shown, in one embodiment, the cross-sectional area of ​​the air guiding channel 31 gradually decreases in the direction away from the connecting position of the air outlet 221 and the air guiding channel 31, that is, the farther the position in the air guiding channel 31 is from the airflow input end, the smaller the cross-sectional area of ​​the air guiding channel 31. It can be understood that the smaller the cross-sectional area of ​​the air guiding channel 31, the faster the flow rate of the airflow when passing through the air guiding channel 31, which can alleviate the attenuation of the intensity of the airflow at a position far away from the airflow input end.

[0045] Specifically, the bottom wall of the air guiding channel 31 is inclined, and the angle formed between the bottom wall of the air guiding channel 31 and the horizontal plane is θ, 1.5 。 ≤θ≤10 。 It can be understood that by tilting the bottom wall of the air guide channel 31, the cross-sectional area of ​​the air guide channel 31 can be gradually reduced, and when θ is less than 1.5 。 When θ is greater than 10, the inclination of the bottom wall of the air guide channel 31 is too small, which will cause the cross-sectional area of ​​the air guide channel 31 to change too little, and cannot effectively alleviate the attenuation of the airflow intensity at a position far away from the airflow input end; when θ is greater than 10 。When the inclination of the bottom wall of the air guide channel 31 is too large, the cross-sectional area of ​​the air guide channel 31 will be too small, which will affect the strength of the airflow discharged from the exhaust port. 。 , 5 。 , 7 。 , 10 。 or other degrees.

[0046] It should also be noted that, in other embodiments, the top wall or other side wall surfaces of the air guide channel 31 may be inclined so that the cross-sectional area of ​​the air guide channel 31 may be gradually reduced, and the side wall surfaces of the air guide channel 31 may be inclined planes or inclined arc surfaces.

[0047] Continue to see Figure 3 As shown, in one embodiment, the area of ​​the first exhaust port 112a is s1, and the area of ​​the second exhaust port 112b is s2, s1≤s2, that is, the larger the area of ​​the exhaust port farther from the airflow input end, the stronger the intensity of the airflow discharged from the exhaust port farther from the airflow input end can be, and the specific values ​​of s1 and s2 can be selected according to actual needs.

[0048] like Figure 4 and Figure 5 As shown, in other embodiments of the present application, the air duct structure 30 is arranged to form a plurality of mutually isolated air guide channels 31, and the plurality of air guide channels 31 are all connected to the air outlet 221 through a main channel 33, the number of the air guide channels 31 is greater than or equal to the number of exhaust ports in an exhaust port group 112, and an air guide channel 31 corresponds to an exhaust port in the exhaust port group 112, and the exhaust port is connected to the corresponding air guide channel 31 through the corresponding drainage air duct 32. It can be understood that in the present embodiment, there are multiple air guide channels 31. Taking the example of two exhaust port groups 112, and one exhaust port group 112 having four exhaust ports, there are at least four air guide channels 31. The two first exhaust ports 112a in the two exhaust port groups 112 are connected to one air guide channel 31, and the two second exhaust ports 112b in the two exhaust port groups 112 are connected to another air guide channel 31, and so on. After the airflow discharged from the air outlet 221 passes through the main channel 33, the airflow in the main channel 33 is diverted by multiple air guide channels 31. The multiple air guide channels 31 respectively connect the guide air duct 32 with the air outlet 221 of the air supply component 20, thereby effectively reducing the intensity attenuation of the airflow discharged from the exhaust port, thereby ensuring the intensity of the airflow discharged from the exhaust port.

[0049] In one embodiment, the maximum width of the main road 33 along the width direction of the bed panel 11 is F, and the maximum width of the air guide channel 31 along the width direction of the bed panel 11 is F1, F1≤0.8*(F / K), K is the number of air guide channels 31, so as to ensure that the airflow in each air guide channel 31 has sufficient strength. The specific values ​​of F, F1 and K can be selected according to actual needs.

[0050] In one embodiment, the spacing between the air duct structure 30 and the coil is F2, F2 ≥ (4 + 1.5 * t) mm, so that the air duct structure 30 and the coil can maintain a sufficient distance to prevent the air duct structure 30 from affecting the routing of the coil, and can also prevent the heat emitted by the coil from causing the air flow in the air duct structure 30 to affect the air outlet temperature of the exhaust port. Among them, the specific value of F2 can be selected according to actual needs. In one embodiment, a heat insulation layer is provided between the air duct structure 30 and the coil to further prevent the heat emitted by the coil from causing the air flow in the air duct structure 30 to affect the air outlet temperature of the exhaust port.

[0051] Continue to see Figure 5 As shown, in one embodiment, the first air outlet 112a and the second air outlet 112b are arranged in sequence in a direction away from the main road 33, the angle formed by the bottom wall surface of the air guide channel 31 corresponding to the first air outlet 112a and the horizontal plane is θ1, and the angle formed by the bottom wall surface of the air guide channel 31 corresponding to the second air outlet 112b and the horizontal plane is θ2, θ1≤θ2, that is, the farther the air outlet is from the main road 33, the greater the inclination of the bottom wall surface of the air guide channel 31, which can make the cross-sectional area of ​​the air guide channel 31 smaller, the faster the air flow velocity through the air guide channel 31, and the smaller the intensity attenuation of the air flow.

[0052] In one embodiment, a heat dissipation duct connected to the air guide channel 31 is also provided in the air duct structure 30. The heat dissipation duct has a heat dissipation port located at the bottom of the bed panel 11. The heat dissipation duct can provide heat dissipation for electronic devices (such as coils) in the bed panel 11, thereby eliminating the need to set up additional heat dissipation channels for the electronic devices in the bed panel 11. In addition, the heat dissipation port is located at the bottom of the bed panel 11, which can prevent hot air discharged from the heat dissipation port from blowing toward the patient.

[0053] like Figure 6 and Figure 7As shown, in some embodiments of the present application, the inner peripheral wall surface of the drainage air duct 32 includes a first wall surface 321 away from the lying area 111 and a second wall surface 322 close to the lying area 111. The first wall surface 321 and the second wall surface 322 both extend obliquely toward the exhaust port and away from the lying area 111, so that the first wall surface 321 and the second wall surface 322 can guide the airflow to flow in the direction away from the lying area 111, so that when the airflow is guided to the exhaust port via the drainage air duct 32 and discharged through the exhaust port, the airflow can diffuse in the direction away from the lying area 111, thereby preventing the airflow discharged from the exhaust port from directly blowing on the patient and causing the patient to feel uncomfortable.

[0054] Furthermore, the angle formed by the first wall 321 and the vertical plane is α1, and the angle formed by the second wall 322 and the vertical plane is α2, α1≤α2, so that the second wall 322 closer to the lying area 111 has a relatively stronger effect in guiding the airflow to flow away from the lying area 111, while the first wall 321 farther from the lying area 111 has a relatively weaker effect in guiding the airflow to flow away from the lying area 111, which can prevent the airflow discharged from the exhaust port from directly blowing on the patient, and also prevent the airflow from being too far away from the patient to achieve a good heat dissipation effect.

[0055] In some embodiments of the present application, the perimeter of the outer contour of the air outlet is C, (C / s) <1.5, and the side length of the outer contour of the air outlet is greater than 5 mm, so that the air outlet has a sufficient area, and the overall shape of the air outlet is relatively narrow and long, which can increase the flow rate of the air when it is discharged from the air outlet. Among them, C / s can be 1.4, 1.2, 1, 0.5 or other ratios, and the side length of the outer contour of the air outlet can be 5.1 mm, 6 mm, 8 mm or other values.

[0056] It should also be noted that the heat of the patient's torso is more concentrated, while the heat of the head is more dispersed relative to the torso. Therefore, it can be set as: the C / s of the exhaust outlet located on the side of the torso area 111b is greater than the C / s of the exhaust outlet on the side of the torso area 111b, thereby making the exhaust outlet on the side of the torso area 111b more narrow and long, so as to improve the heat dissipation efficiency of the exhaust outlet on the side of the torso area 111b.

[0057] Continue to see Figure 1 As shown, in one embodiment of the present application, the air supply component 20 includes a fan 21 and an air pipe 22, one end of the air pipe 22 is connected to the exhaust port of the fan 21, and the other end of the air pipe 22 is an air outlet 221 for connecting to the exhaust port. A filter 23 is provided on the air pipe 22, and the filter 23 is used to filter the airflow provided by the fan 21 to the exhaust port to ensure that the airflow discharged from the exhaust port is purer.

[0058] It should be noted that the number of exhaust vents may be only one, or the number of exhaust vents may be two (such as the first exhaust vent 112a and the second exhaust vent 112b), three (such as the first exhaust vent 112a, the second exhaust vent 112b and the third exhaust vent 112c), four (such as the first exhaust vent 112a, the second exhaust vent 112b, the third exhaust vent 112c and the fourth exhaust vent 112d) or more. The shape of the exhaust vent may be rectangular; of course, in other embodiments, the shape of the exhaust vent may also be circular, elliptical, triangular or other shapes. The area of ​​the exhaust vent may be selected according to actual needs, and a structure similar to a filter may also be provided at the exhaust vent to divide the exhaust vent into a plurality of small-diameter vents.

[0059] In a second aspect, based on the above ventilation system, the present application also provides a magnetic resonance imaging device, such as Figure 7 As shown, the magnetic resonance imaging apparatus comprises a magnet assembly 50 and a ventilation system as in any one of the above-mentioned embodiments.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A ventilation system, characterized in that: Applied to magnetic resonance imaging equipment, the ventilation system comprises: A bed body, comprising a bed panel and a coil assembly arranged in the bed panel, wherein the bed surface of the bed panel comprises a lying area, wherein the lying area is used to place a patient, wherein the coil assembly is located below the bed surface, and the area where the coil assembly is located corresponds to the lying area, wherein the coil assembly comprises a plurality of coils arranged along the length direction of the bed panel, and wherein an exhaust port is arranged on the side of the lying area on the bed surface; An air supply component, the air outlet of the air supply component is connected to the air outlet, and the air supply component is used to provide airflow to the air outlet.

2. The ventilation system according to claim 1, characterized in that The bed surface is provided with an exhaust port group located on the side of the lying area, the exhaust port group and the lying area are arranged along the width direction of the bed panel, the exhaust port group includes a plurality of the exhaust ports, and the plurality of the exhaust ports in the exhaust port group are arranged at intervals along the length direction of the bed panel.

3. The ventilation system according to claim 2, characterized in that: A group of exhaust vents is arranged on one side of the lying area along the width direction of the bed panel, and another group of exhaust vents is arranged on the other side of the lying area along the width direction of the bed panel. The two groups of exhaust vents are symmetrical about a first center line of the bed surface, and the first center line is parallel to the long side of the bed surface.

4. The ventilation system according to claim 2, characterized in that: The lying area includes a head area, a torso area, a leg area and a foot area which are sequentially arranged along the length direction of the bed panel, the head area is used to place the patient's head, the torso area is used to place the patient's torso, the leg area is used to place the patient's legs, and the foot area is used to place the patient's feet; Wherein, the air outlet is arranged on the side of at least one of the head area, the torso area, the leg area and the foot area.

5. The ventilation system according to claim 2, characterized in that: The plurality of coils include a head coil, the lying area includes a head area corresponding to the area where the head coil is located, the head area is used to place the patient's head, the exhaust port is arranged on the side of the head area, and the exhaust port located on the side of the head area is a head exhaust port; Wherein, the distance between the head air outlet and the head area along the width direction of the bed panel is M1, 15 mm ≤ M1 ≤ 80 mm; and / or, The head area has a lower boundary, the distance between the center of the head air outlet and the lower boundary along the length direction of the bed panel is M2, the length of the head area along the length direction of the bed panel is N, and M2≥(90+(N / 3)) mm.

6. The ventilation system according to claim 2, characterized in that: In a group of the exhaust ports, a distance between two adjacent exhaust ports along the length direction of the bed panel is greater than or equal to 0.1 times the sum of the lengths of the two adjacent exhaust ports along the length direction of the bed panel.

7. The ventilation system according to claim 2, characterized in that: An air duct structure is provided below the bed surface, the air duct structure is surrounded to form an air guide channel, and the air outlet is connected with the air outlet through the air guide channel; Among them, the air duct structure is also provided with a drainage air duct corresponding to the exhaust port one by one, and the exhaust port is connected with the air guide channel through the corresponding drainage air duct.

8. The ventilation system according to claim 7, characterized in that The bed surface is provided with a coil interface located on the side of the lying area, and the distance between the exhaust port and the coil interface along the length direction of the bed panel is M3, and the M3 is ≥ 24 mm; or, the M3 is ≥ (20 + t) mm, and t is the wall thickness of the air duct structure.

9. The ventilation system according to claim 7, characterized in that: The air duct structure is surrounded to form an air guiding channel, the air guiding channel is communicated with the air outlet, and the plurality of drainage air ducts are all communicated with one air guiding channel.

10. The ventilation system according to claim 9, characterized in that The plurality of exhaust ports in the exhaust port group include a first exhaust port, a second exhaust port, a third exhaust port and a fourth exhaust port, wherein the first exhaust port, the second exhaust port, the third exhaust port and the fourth exhaust port are sequentially arranged along the length direction of the bed panel, and the connecting position between the air outlet and the air guide channel is located at one end of the air guide channel close to the first exhaust port; Among them, the distance between the first air outlet and the second air outlet along the length direction of the bed panel is L1, the distance between the third air outlet and the second air outlet along the length direction of the bed panel is L2, and the distance between the fourth air outlet and the third air outlet along the length direction of the bed panel is L3, and L3<L2<L1.

11. The ventilation system according to claim 9, characterized in that Along the direction away from the connecting position between the air outlet and the air guiding channel, the cross-sectional area of ​​the air guiding channel gradually decreases, the bottom wall of the air guiding channel is inclined, and the angle formed by the bottom wall of the air guiding channel and the horizontal plane is θ, 1.5°≤θ≤10°.

12. The ventilation system according to claim 9, characterized in that The plurality of exhaust ports in the exhaust port group include a first exhaust port and a second exhaust port, the first exhaust port and the second exhaust port are arranged in sequence along the length direction of the bed panel, and the connecting position between the air outlet and the air guide channel is located at one end of the air guide channel close to the first exhaust port; The area of ​​the first air outlet is s1, the area of ​​the second air outlet is s2, and s1≤s2.

13. The ventilation system according to claim 7, characterized in that The air duct structure is arranged to form a plurality of mutually isolated air guide channels, and the plurality of air guide channels are connected to the air outlet through a main channel. The number of the air guide channels is greater than or equal to the number of the exhaust ports in one exhaust port group, and one air guide channel corresponds to one exhaust port in the exhaust port group, and the exhaust port is connected to the corresponding air guide channel through the corresponding drainage air duct.

14. The ventilation system according to claim 13, characterized in that The maximum width of the main road along the width direction of the bed panel is F, and the maximum width of the air guide channel along the width direction of the bed panel is F1, F1≤0.8*(F / K), K is the number of the air guide channels.

15. The ventilation system according to claim 13, characterized in that The distance between the air duct structure and the coil is F2, F2≥(4+1.5*t) mm, t is the wall thickness of the air duct structure; and / or, a heat insulation layer is provided between the air duct structure and the coil.

16. The ventilation system according to claim 7, characterized in that The area of ​​the air outlet is s, the cross-sectional area of ​​the drainage air duct is S, and s≤0.95*S.

17. The ventilation system according to claim 7, characterized in that The inner peripheral wall surface of the air guide duct includes a first wall surface away from the lying area and a second wall surface close to the lying area, and the first wall surface and the second wall surface both extend obliquely toward the exhaust port and away from the lying area.

18. The ventilation system according to claim 17, characterized in that The angle formed by the first wall surface and the vertical plane is α1, the angle formed by the second wall surface and the vertical plane is α2, and α1≤α2.

19. The ventilation system according to claim 7, characterized in that The air duct structure is also provided with a heat dissipation air duct connected with the air guide channel, and the heat dissipation air duct has a heat dissipation port located at the bottom of the bed panel.

20. The ventilation system according to claim 1, characterized in that The area of ​​the air outlet is s, the perimeter of the outer contour of the air outlet is C, (C / s) <1.5, and the side length of the outer contour of the air outlet is greater than 5 mm.

21. The ventilation system according to claim 1, characterized in that The air supply component comprises: Fan; An air pipe, one end of which is connected to the exhaust port of the fan, and the other end of which is the air outlet connected to the exhaust port. A filter is provided on the air pipe, and the filter is used to filter the airflow provided by the fan to the exhaust port.

22. A magnetic resonance imaging device, characterized in that: A ventilation system comprising a magnet assembly and any one of claims 1 to 21.

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