CN114795757A

CN114795757A - Infant incubator for magnetic resonance

Info

Publication number: CN114795757A
Application number: CN202210177772.7A
Authority: CN
Inventors: 李明强; 宗仁杰; 包健; 裴红华; 刘强
Original assignee: Jiangsu Limagnetism Medical Equipment Co ltd
Current assignee: Jiangsu Limagnetism Medical Equipment Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-29
Anticipated expiration: 2042-02-25
Also published as: CN114795757B

Abstract

The application discloses a baby incubator for magnetic resonance, which comprises a baby cabin and a working cabin arranged at one end of the baby cabin, wherein the baby cabin comprises a first shell, an air guide mechanism and a radio frequency system, the air guide mechanism is arranged in the first shell, and the radio frequency system is arranged in the first shell and is far away from one end of the working cabin; the working cabin comprises a second shell, a controller, and an air return mechanism, an air inlet mechanism, a heating air outlet mechanism and a motor which are respectively connected with the controller; an air return opening and an air inlet opening are formed between the baby cabin and the working cabin; the air return mechanism is communicated with the upper part of the baby cabin through an air return opening, and the heating air outlet mechanism is communicated with the lower part of the baby cabin through an air inlet; air outlets are arranged around the air guide mechanism, at least two air outlets are arranged between the radio frequency system and the working cabin, and at least one air outlet is arranged at one end far away from the working cabin. This application can guarantee the inside constant temperature effect of infant incubator and the homogeneity of the difference in temperature, and can effectually work under the magnetic resonance environment.

Description

Infant incubator for magnetic resonance

Technical Field

The application belongs to the magnetic resonance equipment field, especially relates to a baby's incubator for magnetic resonance.

Background

Magnetic resonance systems have absolute advantages for the diagnosis of neonatal disease, but it is difficult to perform imaging examinations on critically ill neonates that require intensive treatment in an infant incubator. The reason is two:

one is that the conventional infant incubator is provided with a heating system at its bottom, which results in: 1. the air is discharged from one side of the bottom of the infant incubator, the air is returned from the other side of the bottom of the infant incubator, and the biggest defect is that the hot air can only be blown out from one side far away from the air return opening, so that the temperature of one side of the air outlet of the whole incubator is obviously higher than that of one side of the air return opening, and the temperature uniformity is poor. 2. Because the incubator is all air-out from the bottom, air returns from the bottom, and hot air is not lifted to the top of the incubator and is sucked away by the air return opening, the temperature at the bottom of the incubator is higher than the temperature at the top of the incubator, so that the temperature of the whole incubator is cold from top to bottom and hot from bottom, and the temperature collected by the air return opening cannot represent the whole temperature in the incubator. 3. The incubator leads to the height of incubator to become high because the constant temperature heating system is in the bottom of whole incubator, can not realize the miniaturization of incubator, if incubator design such as this kind of structure under the magnetic resonance environment, can not get into the inside scanning that scans of magnetic resonance because magnetic resonance patient space or magnet opening undersize.

In addition, because the time from the use of one patient in the incubator under the magnetic resonance environment to the end of the examination is about one hour, the use time of a single patient is far shorter than that of a patient treated in a traditional incubator (generally, 24 hours is a period for carrying out common disinfection, and the total use time is about 20 days); the use of incubator under the magnetic resonance environment is used for the scanning of sick baby, and user's own physique and anti-bacterial ability are relatively poor, need quick inside cleaning and the disinfection to the incubator, prevent cross infection, and prior art baby's incubator is because structural design's problem, and cleaning and disinfecting is very inconvenient, arouses cross infection easily.

Secondly, the instrument used in the magnetic resonance environment is strict, ferromagnetic substances cannot exist and electromagnetic interference can not be resisted in the magnetic resonance environment, the constant temperature of the traditional infant incubator is realized by driving a centrifugal fan blade to circulate air flow in the incubator through a conventional motor, and heating and temperature control are performed on the circulating air flow, so that the constant temperature in the incubator is realized. However, in the magnetic resonance environment, there cannot be a ferromagnetic substance, which may reduce the accuracy of the magnetic resonance image (the magnetic resonance intends to obtain high quality image, signal to noise ratio and homogeneity, the homogeneity requirement for the central magnetic field is high, generally within 20ppm, the lower this value is better, the magnetic field generated by the motor in the using process may affect the central magnetic field of the magnetic resonance, which may result in poor homogeneity, affect the image quality, and reduce the reliability of image diagnosis), and may also cause the ferromagnetic substance to fly to the magnet and travel danger due to the strong attraction force of the magnetic resonance to the magnetic substance (the general magnetic field strength in the magnetic resonance environment is 0.25T to 3.0T, which has strong attraction force to the magnetic substance and the device with magnetic field); and under high field intensity, the magnetic component can lose efficacy, also can not guarantee the circulation heating of the air in the incubator yet, make the incubator lose effect, threaten to the life of the baby in the case.

The prior art has the following solutions to the above problems: an ultrasonic motor is used. The ultrasonic motor is one of motors, has the advantages of miniaturization, no magnetism, high precision, large torsion, no need of lubrication and the like, and can be well used in a magnetic resonance environment. However, the ultrasonic motor converts energy by utilizing the inverse piezoelectric effect, ultrasonic vibration and frictional coupling of piezoelectric ceramics, the efficiency of the motor is reduced along with the reduction of the size, more electric energy is converted into heat energy (frictional heat generation), the ultrasonic motor is in a short-time intermittent working mode, and long-time continuous work cannot be realized; the rotating speed of the ultrasonic motor is low, the rotating speed is generally kept at 20-100 r/min, and the rotating speed of the motor must reach 1000-2000 r/min to obtain air volume, so that the ultrasonic motor at the present stage is directly used on an infant incubator, cannot obtain enough air volume, and has low working efficiency and poor heat dissipation performance. Therefore, in the prior art, the heating part of the ultrasonic motor is conducted by using cooling liquid, and the cooling liquid takes away heat and then dissipates the heat through air cooling or a radiator; but the coolant liquid circulation still needs the circulating pump to carry out the coolant liquid, still needs to increase a pump, has increased the complexity and the reliability of overall design, still needs to carry out sealed design to liquid, prevents to reveal and causes the damage to inside electrical component, and the operation degree of difficulty is very big.

Disclosure of Invention

To the problem that current infant incubator is difficult for protecting sick danger under the magnetic resonance environment, this application provides an infant incubator for magnetic resonance can use in the magnetic resonance environment, has guaranteed the inside balanced constant temperature effect of infant incubator simultaneously.

In order to solve the technical problem, the following technical scheme is provided:

the infant incubator for magnetic resonance comprises an infant cabin and a working cabin arranged at one end of the infant cabin,

the baby cabin comprises a first shell, an air guide mechanism and a radio frequency system, wherein the air guide mechanism is arranged in the first shell, and the radio frequency system is arranged in the first shell and is far away from one end of the working cabin;

the working cabin comprises a second shell, a controller, and an air return mechanism, an air inlet mechanism, a heating air outlet mechanism and a motor which are respectively connected with the controller; the motor is made of non-magnetic materials and comprises an ultrasonic motor, fins arranged on the outer circumferential surface of the ultrasonic motor and a speed increaser connected with the ultrasonic motor;

an air return opening and an air inlet opening are formed between the baby cabin and the working cabin; the air return mechanism is communicated with the upper part of the baby cabin through an air return opening, and the heating air outlet mechanism is communicated with the lower part of the baby cabin through an air inlet;

the air guide mechanism comprises an air guide cover plate, an air guide bottom plate and an air guide groove, a gap between the air guide cover plate and the first shell forms an air guide channel, the air guide bottom plate is arranged in the air guide channel, so that the gap between the air guide bottom plate, the air guide cover plate and the first shell forms the air guide groove, and the air guide groove is axially arranged along the first shell;

air outlets are arranged around the air guide mechanism, at least two air outlets are arranged between the radio frequency system and the working cabin, and at least one air outlet is arranged at one end far away from the working cabin.

Preferably, the first shell comprises a movable cover plate, a box body and a radio frequency support plate, the movable cover plate and the box body are hinged to each other, the radio frequency support plate is fixedly connected in the box body, and the air guide channel is formed by a gap between the radio frequency support plate and the air guide cover plate.

Preferably, the air guide cover plate is a smooth arc-shaped plate with a slightly concave middle part, and the air guide bottom plate is a stepped arc-shaped plate with a concave middle part.

Preferably, a sliding plate is arranged between the baby cabin and the working cabin, the sliding plate can slide up and down in the baby cabin, and the air inlet and the air return opening are formed in the sliding plate.

Preferably, the second housing and the motor are connected by a motor mount fixed to the bottom of the second housing.

Preferably, the speed increaser includes a third housing made of an aluminum alloy and a planetary gear made of a titanium alloy.

Preferably, the planetary gear comprises an output shaft coaxial with the ultrasonic motor, and the rotating speed of the output shaft is 400-2000 r/min.

Preferably, the gear ratio of the speed increaser and the ultrasonic motor is 1: 20.

preferably, a partition plate is provided between the fin and the speed increaser.

Preferably, the heating air-out mechanism comprises a centrifugal fan blade, a heating plate arranged above the centrifugal fan blade, a heater arranged on the heating plate, and a first air cover arranged at the periphery of the heating plate.

Preferably, the heating sheet has an opening on one side and three sides enclosed to form a mountain shape.

Preferably, the air inlet mechanism comprises an air inlet cover plate, an air filter screen, an air filter element and an air inlet pipeline which are sequentially arranged from top to bottom.

Preferably, the air inlet cover plate is provided with an air inlet grid and an oxygen supply port.

Preferably, the air return mechanism comprises a second fan cover, a temperature sensor, an independent thermal circuit breaker and an anti-blocking induction probe.

Has the advantages that: the utility model provides a can guarantee the inside constant temperature effect of infant incubator and the homogeneity of the difference in temperature, and can effectually work under the magnetic resonance environment, can not influence the baby, guaranteed that the baby that needs guardianship under the incubator environment can transport the magnetic resonance indoor use MRI image inspection, realized that infant incubator uses under magnetic resonance environment and conventional environment, the use scene is unrestricted.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below may be considered as part of the subject matter of the present application provided that such concepts do not contradict each other.

Drawings

The drawings are not intended to be drawn to scale unless specifically indicated. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing.

Fig. 1 is a schematic structural view of an infant incubator (with a movable lid closed) for magnetic resonance.

Fig. 2 is a schematic structural view of the baby compartment (with the flap closed).

Fig. 3 is a schematic structural view of the infant incubator for magnetic resonance (with the flap open).

Fig. 4 is a schematic structural view of the baby compartment (with the flap open).

Fig. 5 is another schematic structural diagram of the infant incubator for magnetic resonance.

Fig. 6 is a schematic view of the internal structure of the work chamber.

Fig. 7 is a schematic structural view of the motor.

Fig. 8 is a schematic structural diagram of the heating air-out mechanism and the motor.

Fig. 9 is a schematic structural view of the heating and air-out mechanism.

Fig. 10 is a schematic structural diagram of the air intake mechanism and the air return mechanism.

Fig. 11 is a schematic structural view of the air intake mechanism.

Fig. 12 is a schematic structural view of the return air mechanism.

Fig. 13 is a schematic structural view of a magnetic resonance infant incubator with a slide opened.

Fig. 14 is a schematic structural view of a slide-mounted infant incubator for magnetic resonance.

Wherein each number represents the following: 1. a baby compartment; 2. a working cabin; 3. an air return mechanism; 4. an air inlet mechanism; 5. a heating air-out mechanism; 6. a motor; 7. a controller; 8. a second housing; 9. a first housing; 11. a radio frequency system; 31. a second fan housing; 32. a temperature sensor; 34. an air outlet; 35. an air return opening; 36. an air inlet; 41. an air inlet cover plate; 42. an air screen; 43. an air filter element; 44. an air inlet pipeline; 51. a centrifugal fan blade; 52. a heating plate; 53. a heater; 61. an ultrasonic motor; 62. a speed increaser; 63. a fin; 64. a partition plate; 65. a motor base; 91. a box body; 92. a removable cover plate; 93. an air guide cover plate; 94. an air guide bottom plate; 95. a radio frequency support plate; 96. a wind disturbing plate; 97. and operating the window.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.

The use of "first," "second," and similar terms in the description and claims of this application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Similarly, the singular forms "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one, unless the context clearly dictates otherwise. The terms "comprises," "comprising," or the like, mean that the elements or items listed before "comprises" or "comprising" encompass the features, integers, steps, operations, elements, and/or components listed after "comprising" or "comprising," and do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may also be changed accordingly.

An infant incubator for magnetic resonance comprises an infant cabin 1 and a working cabin 2 arranged at one end of the infant cabin 1,

the baby cabin 1 comprises a first shell 9, an air guide mechanism and a radio frequency system 11, wherein the air guide mechanism is arranged in the first shell 9, and the radio frequency system 11 is arranged at one end, far away from the working cabin 2, in the first shell 9;

the working cabin 2 comprises a second shell 8, a controller 7, and a return air mechanism 3, an air inlet mechanism 4, a heating air outlet mechanism 5 and a motor 6 which are respectively connected with the controller 7; the motor 6 is made of non-magnetic material and comprises an ultrasonic motor 61, a fin 63 arranged on the outer circumferential surface of the ultrasonic motor 61 and a speed increaser 62 connected with the ultrasonic motor 61; the inside motor cabinet 65 that is equipped with of second shell 8, motor 6 passes through motor cabinet 65 and second shell 8 and links to each other. The air return mechanism 3 and the air inlet mechanism 4 are arranged in parallel and are positioned at the top, the heating air outlet mechanism 5 is arranged below the air return mechanism and the air inlet mechanism, and the motor 6 is arranged below the heating air outlet mechanism 5.

An air return opening 35 and an air inlet 36 are arranged between the baby cabin 1 and the working cabin 2; the air return mechanism 3 is communicated with the upper part of the baby cabin 1 through an air return opening 35, and the heating air outlet mechanism 5 is communicated with the lower part of the baby cabin 1 through an air inlet 36;

the air guide mechanism comprises an air guide cover plate 93, an air guide bottom plate 94 and an air guide groove, a gap between the air guide cover plate 93 and the first shell 9 forms an air guide channel, the air guide bottom plate 94 is arranged in the air guide channel, so that the gap between the air guide bottom plate 94, the air guide cover plate 93 and the first shell 9 forms the air guide groove, and the air guide groove is axially arranged along the first shell 9;

air outlets are arranged around the air guide mechanism, at least two air outlets are arranged between the radio frequency system 11 and the working cabin 2, and at least one air outlet is arranged at one end far away from the working cabin 2.

A sliding plate is arranged between the baby cabin 1 and the working cabin 2, an air return opening 35 and an air inlet 36 are arranged on the sliding plate, and the air return opening 35 is arranged above the air inlet 36. The slide plate can slide up and down in the chute of the baby compartment 1. Of course, the sliding plate can also be arranged in the working cabin 2 to slide up and down, as long as the sliding can separate or connect the baby cabin 1 and the working cabin 2 to be exposed in the air. The conventional traditional incubator needs to integrally take out the heating system from the incubator equipment for disinfection; this application can make the operator better open 2 insides of work cabin and to its cleanness and disinfection, and the clean disinfection difficult problem of heating plate 52 has been solved to this kind of design, takes out the slide moreover, and whole heating air-out mechanism 5 and return air mechanism 3 also can expose under ultraviolet sterilization environment.

The first housing 9 includes a radio frequency support plate 95, a case 91, a movable cover plate 92 provided above the case 91, and an operation window 97 provided on the movable cover plate 92.

The movable cover 92 is movably connected to the box body 91 so that the movable cover 92 can be opened or closed at one side of the box body 91. The movable cover plate 92 is of a trapezoidal structure as a whole when viewed from the side, and the trapezoidal structure formed by three panels or five panels is beneficial to large opening and closing, and is convenient for adjusting, fixing and the like of the baby. In this embodiment, the movable cover 92 is hinged to the box 91, and the opening and closing angle is about 180 degrees, which is larger or smaller than the opening and closing angle, so long as the convenient operation can be realized.

On top of this ladder structure, an operating window 97 is provided on one or more sides of the removable cover 92. The operation window 97 is smaller and can be opened or closed on the movable cover plate 92, when only the baby needs to be adjusted in a small range, the operation window 97 can be directly operated, an operator can conveniently stretch hands into the baby cabin 1 from two sides to operate the baby, the influence of the external environment on the inside of the baby cabin 1 can be effectively reduced, and meanwhile, the fluctuation of the temperature in the baby cabin 1 can be reduced.

The first shell 9 is made of a double-layer perspective material, an operator can observe the state of the baby from the outside, and the constant temperature cover formed by the double-layer structure has the heat insulation performance and the sound insulation function, so that the influence of the external environment on the baby cabin 1 can be effectively reduced. Or only the upper part of the box body can be made of perspective materials, so that the observation is convenient.

In the embodiment, the return air inlet 35 on the sliding plate corresponds to the upper part of the box body 91, and the return air inlet 35 is an open slot, and a closed slot is formed through the movable cover plate 92 above the open slot, so that the return flow of hot air is realized; the air inlet 36 on the sliding plate corresponds to the lower part of the box body 91.

The radio frequency system 11 is mainly composed of a transceiver coil. Make the baby just can position and fix the scanning position after getting into baby cabin 1, send into the magnetic resonance room with holistic incubator after, need not to embrace the baby from baby cabin 1 in, directly send into the incubator magnetic resonance system down the scanning can, after the scanning, directly transport baby's incubator to NICU, guarantee that the baby does not contact external environment in the inspection process, guarantee baby safety.

The bottom of the rf system 11 is provided with an rf support plate 95 for placing the rf system 11 in the box 91.

The air guiding mechanism comprises an air guiding cover plate 93, an air guiding bottom plate 94 and an air guiding groove. The air guide mechanism is used for guiding the air sent by the working cabin 2 to all parts of the baby cabin 1, so that the uniformity of the environmental temperature in the baby cabin 1 is ensured.

The radio frequency support plate 95 and the air guide cover plate 93 are arranged in parallel along the axial direction in the box body 91, and a gap is reserved between the radio frequency support plate and the air guide cover plate to form an air guide channel; the air guide channel is provided with an air guide bottom plate 94, so that a gap between the three forms an air guide groove, and hot air from the air inlet 36 is conveyed to each corner of the baby compartment 1 along the air guide groove. Of course, the air guide channel is only required to be formed below the bed plate on which the baby lies, and is not necessarily formed by the radio frequency support plate 95 and the air guide cover plate 93.

The air guide cover plate 93 is arranged above the air guide bottom plate 94, which not only can be used as a bed plate for a baby to lie flat, but also can ensure that hot air is supplied in the direction of the air guide groove and does not leak. Wind-guiding apron 93 can extract at any time, and the wind-guiding passageway shows promptly in the operator, to the cleanness and the disinfection in the wind-guiding passageway, and is simpler and convenient, can not have any dead angle to exist, after the disinfection, because the wind-guiding passageway is different from traditional incubator (traditional incubator wind channel is located the incubator bottom and seals), can carry out more careful sterilization with the help of the ultraviolet ray, solve traditional incubator ultraviolet ray and can only disinfect to the surface, can not be to the drawback of inside wind channel sterilization.

The edge of the air guide bottom plate 94 is provided with a first-degree inclination angle, so that hot air is conveyed upwards to the air guide cover plate 93 along the air guide groove, and heat loss is less. In this embodiment, the wind guide cover plate 93 is a smooth arc plate with a slightly concave middle, and the wind guide bottom plate 94 is a stepped arc plate with a concave middle, so that the inclination of the wind guide bottom plate 94 is slightly increased, and upward wind outlet is facilitated.

A plurality of air outlets are formed between the joint of the air guide cover plate 93 and the radio frequency support plate 95 and the box body 91. At least one air outlet is arranged at one end far away from the air inlet 36, and the air outlets are uniformly distributed along the axial direction of the air guide cover plate 93 and the radio frequency support plate 95 and are distributed at two sides. In this embodiment, the box 91 has an air outlet at the middle and at both sides, and an air outlet is also provided at the end far away from the working chamber 2.

The air outlets arranged on the two sides are arranged at an inclined angle, so that air blown out from the air outlets and the box body 91 are not vertically blown out, an inclined air direction is formed, the contact surface of the air outlets blown onto the box body 91 is increased, and the heating area is increased; in addition, the hot air can be blown to the middle upper part of the incubator, so that the constant temperature effect and the heating speed of the whole incubator are accelerated. Inclination makes the air outlet radian output that makes progress, can effectively guarantee hot-blast output to 1 tops in the baby cabin, and rate of heating is faster, and is more even.

The air disturbing plate 96 is arranged at the position of the air outlet (namely the air outlet at the end part of the radio frequency system 11) far away from the working cabin 2, the air disturbing plate 96 is fixed on the inner wall of the box body 91, the speed of the passing air flow tends to be uniform, the flowing noise of the air is reduced, and therefore less interference is caused in the process of scanning and transferring the baby in the baby cabin 1, and the stabilizing effect of the baby is kept.

In summary, heated hot air is sent into the air guide groove through the air inlet 36, and is sent to each corner of the baby chamber 1 through each air outlet by the air guide groove, the hot air rises to the top of the baby chamber 1, the top of the baby chamber 1 is provided with the air return opening 35, the hot air enters the working chamber 2 on one side through the air return opening 35, and is reheated in the working chamber 2 through the heating air outlet mechanism 5, so that the temperature control effect is realized. Because the working cabin 2 is arranged at one side of the incubator, air is supplied from the bottom, and air is returned from the top, the stability and the uniformity of the environmental temperature in the baby cabin 1 can be improved. In addition, the motor 6 is arranged in the working cabin 2 at one side, so that the influence of the working of the motor 6 on the baby in the baby cabin 1 can be greatly reduced.

The controller 7 is composed of nonmagnetic electronic components and is used for controlling each mechanism. The outside is shielded by the electromagnetic shield box, can realize using under the magnetic resonance environment, avoids the interference to the magnetic resonance system.

The motor 6 is made of a non-magnetic material and includes an ultrasonic motor 61, a fin 63 disposed on an outer circumferential surface of the ultrasonic motor 61, and a speed increaser 62 connected to the ultrasonic motor 61.

In order to improve the stability of the constant temperature inside the incubator and the rate of temperature rise, the speed increaser 62 includes a third housing made of an aluminum alloy and a planetary gear made of a titanium alloy. The ultrasonic motor 61 has high precision and low rotating speed, and is generally used for positioning control, but in the application, the air channel circulating motor 6 serving as an incubator has low precision requirement and higher requirement on rotating speed, so that the speed increaser 62 is added, and the whole body is made of non-magnetic materials and can be effectively practical in a magnetic resonance environment.

The planetary gear comprises an output shaft which is coaxial with the ultrasonic motor 61, and the rotating speed of the output shaft is 400-2000 r/min. The gear ratio of the speed increaser 62 to the ultrasonic motor 61 is 1: 20. the ultrasonic motor 61 has far large resistance and far large torsion during working, the abrasion degree of the piezoelectric ceramic sheet in the ultrasonic motor 61 is increased, and the service life of the motor 6 is shortened, so that the service life of the motor 6 can be prolonged while high rotation speed is achieved by selecting proper parameters.

The design of increasing fin 63 through the outside at supersound motor 61, increases the heat radiating area with ambient air, makes the heat that supersound motor 61 produced take with the air in, when the work heat is less than the heat dissipation heat, just can solve supersound motor 61's the problem of generating heat, and this scheme structure is reliable, and is with low costs, and processing is convenient.

To further improve the heat radiation performance, a partition plate 64 is provided between the fin 63 and the speed increaser 62. The partition plate 64 partitions the ultrasonic motor 61 and the heater chip 52 provided above, and prevents heat from being transmitted to the ultrasonic motor 61 itself. In addition, a partition plate 64 is also provided between the centrifugal fan 51 and the motor 6.

The heating air-out mechanism 5 comprises a centrifugal fan blade 51, a heating sheet 52 arranged above the centrifugal fan blade 51, a heater 53 arranged on the heating sheet 52, and a first air cover arranged at the periphery of the heating sheet 52.

The heating plate 52 is made of aluminum and is integrally in a mountain shape, so that one side of the heating plate 52 is open and three sides are enclosed. The traditional incubator heating plate 52 generally adopts a spiral spring heating tube structure, the disinfection and wiping of the heating plate 52 are more complicated, the clearance between spiral tubes is smaller, and the wiping and disinfecting process is longer. The heating sheet 52 is in a Chinese character 'shan' -shaped, one end of the heating sheet 52 is arranged in an open manner, after the sliding plate is taken away, the disinfection and cleaning can be effectively facilitated, the efficiency is improved, and more patients can use the incubator to perform magnetic resonance image examination in unit time; the Chinese character 'shan' shape can effectively increase the heat dissipation area and improve the heating efficiency.

The heater 53 is installed at the end of the heating sheet 52, the heater 53 is a PTC heater and is used for heating the aluminum profile, the temperature can be automatically kept constant, and meanwhile, the heating temperature of the heater 53 has a highest value, so that the heater 53 and other components are effectively prevented from being damaged by excessive heating.

The first fan housing is arranged at the periphery of the heating sheet 52, three sides of the first fan housing are enclosed, and the first fan housing is used for gathering and sealing circulating heating air, so that the centrifugal fan blades 51 can absorb air, and the air is fully heated after being decomposed into hot air, and the heating efficiency is improved.

The motor 6 is connected with the centrifugal fan blade 51 and used for driving the centrifugal fan blade 51 to work and generate axial air inlet, so that the air inlet above is absorbed, all circulating air is guaranteed to pass through the effective heater 53, and the heating constant-temperature effect is achieved.

The air intake mechanism 4 comprises an air intake cover plate 41, an air filter 42, an air filter element 43 and an air intake duct 44 which are arranged in the air intake cover plate 41 from top to bottom. The 41 both sides of air inlet apron are equipped with the air inlet grid, and the outside air of being convenient for gets into from both sides, and air inlet apron 41 is made by high strength plastics, can effectively protect fragile air filter 42 and air filter 43, and air filter 42 can the filter-air in the great granule foreign matter, and air filter 43 can filter the tiny microorganism in the air, guarantees the air cleanliness factor that gets into the incubator. The front end of the air inlet cover plate 41 is provided with an oxygen supply port, which can ensure that external oxygen supply equipment supplies oxygen with certain concentration to enter the incubator. Get into heating air-out mechanism 5 through inlet air channel behind the filtration, its below is heating plate 52, can heat the air that gets into the incubator inside to guarantee the stability of the inside temperature of incubator.

The air return mechanism 3 comprises a second fan housing 31, a temperature sensor 32, an independent thermal circuit breaker and an anti-blocking inductive probe.

The temperature sensors 32 are at least two, are respectively positioned at the air return inlet 35 and the air outlet, and are used for comparing the temperatures of the air return inlet 35 and the air outlet, so that the deviation between the temperature of the return air and the actual temperature is reduced to the minimum, and the working performance is better. Temperature sensor 32 of return air inlet 35 is used for detecting the return air temperature, can know the inside ambient temperature of incubator in real time, and then air heater power and wind speed to guarantee that the inside temperature of incubator maintains a stable value, if the temperature of gathering is great with actual temperature deviation, then will cause heating system malfunction, can cause life danger to the inside patient of incubator when serious. Therefore, when the deviation of the two temperature sensors is higher than the set value, an alarm is triggered to ensure the safety of the patient in the incubator.

The anti-blocking inductive probe and the independent thermal circuit breaker are both arranged in the second air cover 31. Independent thermal circuit breaker is used for detecting the secondary of return air temperature, prevents that temperature control system from breaking down to skew setting value, so that independent thermal circuit breaker can in time act, breaks off all heating system, and sends the warning, reminds the user, avoids the inside baby of incubator to cause life danger. The patient has clothing parcel in the incubator, in case there is the clothing to cause the jam to the return air inlet, can make the real-time temperature that temperature sensor can not in time gather, can cause heating system can not carry out normal work according to actual temperature, prevents stifled inductive probe and can sense when the foreign matter takes place the foreign matter jam at the return air inlet, can in time send out the police dispatch newspaper to remind the operator in time to get rid of the foreign matter, guarantee the inside circulation of air of incubator.

The second fan housing 31 is designed in an arc shape, so that the wind noise generated by air flow can be effectively reduced during air return, and the interior of the incubator is ensured to be silent. It can also be convenient for gather and the circulation heating to inside temperature, and outside air passes through the entering of air inlet mechanism for in time supply incubator inside air and oxygen supply under the special circumstances.

When the air-conditioner works, air enters from the air inlet mechanism and is heated by the heating air outlet mechanism to form hot air, the hot air enters the baby cabin through the air inlet at the lower part of the sliding plate, is conveyed along the air guide groove between the air guide cover plate and the radio frequency support plate (or the box body), is conveyed to the upper part of the box body through each air outlet in the box body, and is finally conveyed out from the air return port; through the detection of the return air inlet, the air flows back to the heating air outlet mechanism and is matched with the air of the air inlet mechanism, and the air flows back again after being heated. The overall layout design ensures that the hot air is uniformly distributed in the box body around the baby, thereby realizing the uniformity of the temperature difference between the upper part and the lower part.

In summary, the following steps:

1. the constant temperature system (namely the working cabin of the application) is designed at one end of the incubator, so that the height of the whole incubator can be reduced, the internal space of the incubator is increased, and meanwhile, the infant incubator can enter the magnetic resonance, and the problems that the height of the incubator is too high and the incubator cannot enter the magnetic resonance due to the traditional structure are solved (the magnetic resonance is generally in a C-shaped structure or a barrel structure, and the opening of a general magnet is smaller);

2. air outlets are designed around the whole incubator, air can be exhausted around the incubator at the same time, the problem of uneven temperature at two ends of the incubator is solved, meanwhile, the air outlets are also arranged at the head part (the position of a radio frequency system) of the incubator, and the design of the air duct of the whole incubator is favorable for reducing the resistance of the air and reducing the noise of the exhausted air;

3. the incubator is the bottom air-out, the structure of top return air, and this design can let the hot-air rise to the top of incubator naturally, is discharging through the return air inlet, and temperature homogeneity is higher about the incubator like this, has solved the inhomogeneous problem of traditional incubator inside upper and lower temperature, and incubator top return air can represent the temperature of whole incubator more through the temperature that the sensor gathered moreover.

Although the present application has been described with reference to preferred embodiments, it is not intended to limit the present application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the definition of the claims.

Claims

1. Infant incubator for magnetic resonance, its characterized in that: comprises a baby cabin and a working cabin arranged at one end of the baby cabin,

2. The infant incubator for magnetic resonance as recited in claim 1, wherein: the first shell comprises a movable cover plate, a box body and a radio frequency supporting plate, the movable cover plate and the box body are hinged to each other, the radio frequency supporting plate is fixedly connected in the box body, and the air guide channel is formed by a gap between the radio frequency supporting plate and the air guide cover plate.

3. The infant incubator for magnetic resonance as recited in claim 1, wherein: the air guide cover plate is a smooth arc-shaped plate with a slightly concave middle part, and the air guide bottom plate is a stepped arc-shaped plate with a concave middle part.

4. The infant incubator for magnetic resonance according to claim 1, wherein: a sliding plate is arranged between the baby cabin and the working cabin, the sliding plate can slide up and down in the baby cabin, and the air inlet and the air return opening are formed in the sliding plate.

5. The infant incubator for magnetic resonance as recited in claim 1, wherein: the speed increaser includes a third housing made of an aluminum alloy and a planetary gear made of a titanium alloy.

6. The infant incubator for magnetic resonance according to claim 5, characterized in that: the planetary gear comprises an output shaft which is coaxial with the ultrasonic motor, and the rotating speed of the output shaft is 400-2000 r/min.

7. The infant incubator for magnetic resonance as recited in claim 1, wherein: the heating air-out mechanism comprises a centrifugal fan blade, a heating sheet arranged above the centrifugal fan blade, a heater arranged on the heating sheet and a first fan cover arranged on the periphery of the heating sheet.

8. The infant incubator according to claim 7, wherein: one side of the heating sheet is open, and the three sides are enclosed to form a mountain shape.

9. The infant incubator for magnetic resonance as recited in claim 1, wherein: the air inlet mechanism comprises an air inlet cover plate, an air filter screen, an air filter element and an air inlet pipeline which are sequentially arranged from top to bottom.

10. The infant incubator for magnetic resonance as recited in claim 1, wherein: the air return mechanism comprises a second fan cover, a temperature sensor, an independent thermal circuit breaker and an anti-blocking inductive probe.