CN219145230U - Power module and ventilation treatment equipment - Google Patents
Power module and ventilation treatment equipment Download PDFInfo
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- CN219145230U CN219145230U CN202223470904.XU CN202223470904U CN219145230U CN 219145230 U CN219145230 U CN 219145230U CN 202223470904 U CN202223470904 U CN 202223470904U CN 219145230 U CN219145230 U CN 219145230U
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Abstract
The application discloses power module and treatment facility that ventilates relates to medical instrument technical field, include: EMC filter circuit, radiating component, non-isolated power circuit and isolated power circuit on the same circuit board; the input end of the EMC filter circuit is used for being connected with a power supply, and the output end of the EMC filter circuit is respectively connected with the non-isolated power supply circuit and the isolated power supply circuit; the heat dissipation assembly is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit. The non-isolated power supply circuit and the isolated power supply circuit share the EMC filter circuit and the radiating component, and the EMC filter circuit and the radiating structure are not required to be arranged for the non-isolated power supply circuit and the isolated power supply circuit respectively and independently, so that circuit components are saved, the space utilization rate is improved, and the production cost and the development difficulty are reduced.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a power module and ventilation treatment equipment.
Background
Currently, non-invasive positive pressure ventilation is widely used in clinical treatment and hospital rescue, and a tube is not required to be inserted into the airway of a patient through surgery, but a continuous pressure ventilation or a variable pressure ventilation is delivered to the airway of the patient by using a pressure ventilation device and a breathing mask worn on the face of the patient, so that the patient is treated.
In the prior art, an isolated power supply circuit and a non-isolated power supply circuit are generally used for supplying power to pressure ventilation equipment, wherein the isolated power supply circuit is used for supplying power to a system load, and the non-isolated power supply circuit is used for supplying power to a heating load. In order to meet the requirements of all aspects of electromagnetic compatibility of the circuit, EMC filter circuits are required to be arranged on the isolated power supply circuit and the non-isolated power supply circuit respectively, and heat dissipation modules are also required to be arranged to dissipate heat of the circuits respectively so as to meet the safety requirements.
By adopting the scheme in the prior art, the isolated power supply circuit and the non-isolated power supply circuit are required to be respectively provided with the EMC filter circuit and the heat dissipation module, so that the number of components in the circuit is more, the cost is higher, more space is occupied, and the development difficulty is higher.
Disclosure of Invention
The embodiment of the application aims to provide a power module and ventilation treatment equipment, which can solve the problems that in the prior art, an isolated power circuit and a non-isolated power circuit are required to be respectively provided with an EMC filter circuit and a heat dissipation module, so that the number of components in the circuit is more, the cost is higher, more space is occupied, and the development difficulty is higher.
In order to solve the technical problems, the application is realized as follows:
in a first aspect, embodiments of the present application provide a power module, including: EMC filter circuit, radiating component, non-isolated power circuit and isolated power circuit on the same circuit board;
the input end of the EMC filter circuit is used for being connected with a power supply;
the output end of the EMC filter circuit is connected with the non-isolated power supply circuit and the isolated power supply circuit respectively;
the heat dissipation assembly is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit.
Optionally, the EMC filter circuit includes: a piezoresistor;
the two ends of the piezoresistor are respectively connected with a live wire and a zero wire of the EMC filter circuit;
the non-isolated power supply circuit is connected to two ends of the piezoresistor.
Optionally, the EMC filter circuit further comprises: a capacitor;
two ends of the capacitor are respectively connected with a live wire and a zero wire of the EMC filter circuit;
the isolation power supply circuit is connected to two ends of the capacitor.
Optionally, an inductance is provided between the varistor and the capacitor.
Optionally, the EMC filter circuit further comprises: a fuse;
the fuse is arranged between the piezoresistor and the power supply.
Optionally, the isolated power supply circuit includes: the first rectifying circuit, the input filter circuit, the transformer and the output filter circuit are connected in sequence;
the input end of the first rectifying circuit is connected with the EMC filter circuit;
and the output end of the output filter circuit is used for connecting with a system load.
Optionally, the non-isolated power supply circuit includes: the second rectifying circuit, the stabilized voltage supply, the power driving and controlling circuit;
the input end of the second rectifying circuit is connected with the EMC filter circuit;
the output end of the second rectifying circuit is respectively connected with the stabilized voltage power supply and the power drive;
the control circuit is respectively connected with the power drive and the stabilized voltage supply.
Optionally, the heat dissipation assembly includes a first heat dissipation element, a second heat dissipation element, and a third heat dissipation element;
the first heat dissipation piece is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit;
the second heat dissipation part is close to the EMC filter circuit and the isolation power supply circuit and is used for dissipating heat of the EMC filter circuit and the isolation power supply circuit;
the third heat dissipation piece is close to the non-isolated power supply circuit and used for dissipating heat of the non-isolated power supply circuit.
Optionally, the first heat dissipation piece, the second heat dissipation piece and the third heat dissipation piece are one or a combination of an aluminum profile ultrasonic heat dissipation sheet and a stamping aluminum plate heat dissipation sheet.
In a second aspect, embodiments of the present application provide a ventilation therapy device, including the power module described above.
In the embodiment of the application, the EMC filter circuit, the heat dissipation assembly, the non-isolated power supply circuit and the isolated power supply circuit are positioned on the same circuit board, the input end of the EMC filter circuit is used for being connected with a power supply, and the output end of the EMC filter circuit is respectively connected with the non-isolated power supply circuit and the isolated power supply circuit; the heat dissipation assembly is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit. The non-isolated power supply circuit and the isolated power supply circuit share the EMC filter circuit and the radiating component, and the EMC filter circuit and the radiating structure are not required to be arranged for the non-isolated power supply circuit and the isolated power supply circuit respectively and independently, so that circuit components are saved, the space utilization rate is improved, and the production cost and the development difficulty are reduced.
Drawings
FIG. 1 is a schematic diagram of a power module circuit described in an embodiment of the present application;
FIG. 2 is a technical block diagram of a power module described in an embodiment of the present application;
fig. 3 is a schematic diagram of a power module according to an embodiment of the present application.
Reference numerals illustrate:
a 10-EMC filter circuit; 20-a non-isolated power supply circuit; 30-isolating the power supply circuit; 40-power supply; 50-a first heat sink; 60-a second heat sink; 70-third heat sink.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The following describes in detail a respiratory mask and a ventilation therapy device provided in the embodiments of the present application through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
Referring to fig. 1 to 3, embodiments of the present application provide a power module including: EMC filter circuit 10, heat sink assembly, non-isolated power supply circuit 20 and isolated power supply circuit 30 on the same circuit board; the input end of the EMC filter circuit 10 is used for connecting with a power supply 40; the output end of the EMC filter circuit 10 is respectively connected with the non-isolated power supply circuit 20 and the isolated power supply circuit 30; the heat dissipation assembly is used for dissipating heat of the EMC filter circuit 10, the isolated power supply circuit 30 and the non-isolated power supply circuit 20.
Specifically, as shown in fig. 1 to 3, in the embodiment of the present application, an input end of the electromagnetic compatibility (Electromagnetic Compatibility, EMC) filter circuit is connected to the power source 40, and specifically, power supply may be implemented through an input port of the device, and the power source 40 may be a mains supply, a generator, or the like. The EMC filter circuit 10 can reduce electromagnetic interference of the non-isolated power supply circuit 20 and the isolated power supply circuit 30. The EMC filter circuit 10 may be a circuit with electromagnetic filter function including an inductance and a capacitance, and the specific structure of the EMC filter circuit 10 is not limited in this embodiment, and all filter circuits capable of implementing EMC belong to the protection scope of this application.
The non-isolated power supply circuit 20 is relatively high voltage for powering a heating load, such as a heating plate in a ventilation therapy apparatus. The isolated power circuit 30 is mainly used for supplying power to a system load, the voltage required by the system load is low, a transformer can be used for converting high voltage into low voltage required by the system load, the system load can be a control chip, a sensor and other components, and the low voltage required by the system load can be 24V, 48V and the like. The non-isolated power supply circuit 20 and the isolated power supply circuit 30 share one EMC filter circuit 10, and the current is transmitted to the non-isolated power supply circuit 20 and the isolated power supply circuit 30 after passing through the EMC filter circuit 10, respectively.
The EMC filter circuit 10, the heat dissipation assembly, the non-isolated power supply circuit 20 and the isolated power supply circuit 30 are located on the same circuit board, and the heat dissipation assembly can dissipate heat for the EMC filter circuit 10, the non-isolated power supply circuit 20 and the isolated power supply circuit 30 at the same time. The heat sink assembly may be a finned tube assembly, an air cooled assembly, a water cooled assembly, or the like.
In this embodiment of the application, the non-isolated power supply circuit 20 and the isolated power supply circuit 30 share the EMC filter circuit 10 and the heat dissipation component, and the EMC filter circuit 10 and the heat dissipation structure are not required to be separately set for the non-isolated power supply circuit 20 and the isolated power supply circuit 30 respectively, so that circuit components are saved, the space utilization rate is improved, and the production cost and the development difficulty are reduced.
Optionally, referring to fig. 1, the EMC filter circuit 10 includes: a varistor MOV1; the two ends of the piezoresistor MOV1 are respectively connected with a live wire and a zero wire of the EMC filter circuit 10; the non-isolated power supply circuit 20 is connected across the varistor MOV 1.
Specifically, as shown in fig. 1, two ends of the varistor MOV1 are respectively connected with the live wire and the zero wire of the EMC filter circuit 10, and when overvoltage occurs, the varistor MOV1 is broken down to present a short circuit state, so that the voltage at two ends of the varistor MOV1 is clamped at a lower level, and an overvoltage protection effect is achieved.
The varistor MOV1 mainly needs to meet the following parameters: the maximum allowable voltage of the piezoresistor MOV1 is larger than the maximum value of the output voltage of the power supply; the maximum clamping voltage of the piezoresistor MOV1 does not exceed the maximum surge voltage allowed by the post-stage circuit, so that the damage to the post-stage circuit is avoided; the surge current flowing through the piezoresistor MOV1 does not exceed the surge current which can be born by the piezoresistor MOV1, so that the piezoresistor MOV1 is prevented from being damaged.
The non-isolated power supply circuit 20 is connected to both ends of the varistor MOV1, and is connected to the live line and the neutral line of the EMC filter circuit 10, respectively. The EMC filter circuit 10 is arranged on the strong electric side, and the range of the safety wiring layout that the non-isolated power supply circuit 20 needs to meet is reduced, so that the safety requirement can be met more easily.
Optionally, referring to fig. 1, the EMC filter circuit 10 further includes: a capacitor C2; both ends of the capacitor C2 are respectively connected with a live wire and a zero wire of the EMC filter circuit 10; the isolated power circuit 30 is connected across the capacitor C2.
Specifically, as shown in fig. 1, both ends of the capacitor C2 are connected to the live line and the neutral line of the EMC filter circuit 10, respectively, and can perform a filtering function. The isolated power supply circuit 30 is connected to both ends of the capacitor C2, and is connected to the live line and the neutral line of the EMC filter circuit 10, respectively. After passing through the EMC filter circuit 10, the utility power is transmitted to the isolated power circuit 30, so as to supply power to the system load. The non-isolated power supply circuit 20 and the isolated power supply circuit 30 share the EMC filter circuit 10, and the EMC filter circuit 10 is not required to be arranged for the non-isolated power supply circuit 20 and the isolated power supply circuit 30 respectively and independently, so that circuit components are saved, the space utilization rate is improved, and the production cost and the development difficulty are reduced.
Optionally, as shown with reference to fig. 1, an inductance LF3 is provided between the varistor MOV1 and the capacitor C2.
Specifically, as shown in fig. 1, the inductor LF3 may be a common-mode inductor or a differential-mode inductor, and the common-mode inductor and the differential-mode inductor are used for high-frequency filtering and low-frequency filtering, respectively. By providing the inductance LF3, electromagnetic interference of the non-isolated power supply circuit 20 and the isolated power supply circuit 30 can be reduced.
Optionally, referring to fig. 1, the EMC filter circuit 10 further includes: a fuse; the fuse is arranged between the varistor MOV1 and the power supply 40.
Specifically, as shown in fig. 1, the fuse may be a fuse tube or a fuse, and when the circuit is over-current, the front fuse tube or the fuse is burned out to disconnect the circuit, thereby realizing over-current protection and avoiding damage to the EMC filter circuit 10 and the subsequent circuit. The number of the fuses may be one, two or more, and may be specifically selected according to the arrangement mode and the number of the components, which is not limited in the embodiment of the present application. In the embodiment of the present application, as shown in fig. 1, the number of fuses is two, F1 and F2, respectively.
Optionally, referring to fig. 1, the isolated power supply circuit 30 includes: the first rectifying circuit, the input filter circuit, the transformer and the output filter circuit are connected in sequence; the input end of the first rectifying circuit is connected with the EMC filter circuit 10; the output end of the output filter circuit is used for connecting with a system load.
Specifically, as shown in fig. 1, the commercial power enters the first rectifying circuit after passing through the EMC filter circuit 10, the first rectifying circuit rectifies the ac into the dc, then enters the transformer after passing through the input filter circuit, and the transformer converts the voltage into the voltage required by the system load, and then passes through the output filter circuit and is transmitted to the system load. The first rectifying circuit may include components such as a rectifying diode and a filter capacitor.
Optionally, referring to fig. 1, the non-isolated power supply circuit 20 includes: the second rectifying circuit, the stabilized voltage supply, the power driving and controlling circuit; the input end of the second rectifying circuit is connected with the EMC filter circuit 10; the output end of the second rectifying circuit is respectively connected with the stabilized voltage power supply and the power drive; the control circuit is respectively connected with the power driving and the stabilized voltage supply.
Specifically, as shown in fig. 1, after passing through the EMC filter circuit 10, the commercial power enters a second rectifying circuit, the second rectifying circuit rectifies ac into dc, and the dc is transmitted to a regulated power supply and power driving, where the second rectifying circuit may include components such as a rectifying diode and a filter capacitor. The second rectifying circuit is connected with the power drive, and the rectified signal can be directly used as a power supply of the power drive; the other branch of the second rectifying circuit is transmitted to the control circuit through the stabilized voltage power supply, and the control circuit controls the power drive to be turned on and off, and the control circuit can comprise a triode, a MOS tube and other components capable of controlling the power drive to be turned on and off. In the embodiment of the application, the power drive can be a humidifier, and the humidifier is located on a gas pipeline of the ventilation treatment device and is used for humidifying and warming gas.
Optionally, referring to fig. 3, the heat dissipating assembly includes a first heat dissipating member 50, a second heat dissipating member 60, and a third heat dissipating member 70; the first heat sink 50 is used for dissipating heat from the EMC filter circuit 10, the isolated power supply circuit 30, and the non-isolated power supply circuit 20; the second heat sink 60 is close to the EMC filter circuit 10 and the isolated power supply circuit 30, and is used for dissipating heat from the EMC filter circuit 10 and the isolated power supply circuit 30; the third heat sink 70 is close to the non-isolated power circuit 20 and is used for dissipating heat from the non-isolated power circuit 20.
Specifically, as shown in fig. 3, the EMC filter circuit 10, the isolated power supply circuit 30, and the non-isolated power supply circuit 20 generate heat during operation, and the heat dissipation assembly can dissipate heat from the above circuits. The specific heat dissipation mode can be as follows: the coverage area of the first heat sink 50 is larger, and is a heat dissipation structure shared by the EMC filter circuit 10, the isolated power supply circuit 30, and the non-isolated power supply circuit 20, so as to realize overall heat dissipation. The second heat sink 60 is disposed close to the EMC filter circuit 10 and the isolated power supply circuit 30, and is capable of dissipating heat from the EMC filter circuit 10 and the isolated power supply circuit 30; the third heat sink 70 is disposed close to the non-isolated power supply circuit 20, and can dissipate heat from the non-isolated power supply circuit 20.
Through setting up above-mentioned first radiating piece 50, second radiating piece 60 and third radiating piece 70, on whole radiating basis, set up the radiating piece again to each local position and make up the heat dissipation, guarantee EMC filter circuit 10, keep apart power supply circuit 30 and non-isolated power supply circuit 20 and be in normal operating temperature, avoid the high temperature to appear components and parts damage, promote equipment durability.
Optionally, the first heat sink 50, the second heat sink 60, and the third heat sink 70 are one or a combination of aluminum profile ultrasonic fins and stamped aluminum plate fins.
Specifically, the specific structures of the first heat sink 50, the second heat sink 60 and the third heat sink 70 may be one or a combination of aluminum profile ultrasonic fins and stamped aluminum plate fins. In addition, heat dissipation can be realized by adopting modes such as air cooling, water cooling and the like, and the embodiment of the application is not limited to the heat dissipation.
The embodiment of the application also provides ventilation treatment equipment, which comprises the power supply module.
The ventilation treatment equipment can be positive pressure ventilation equipment such as an oxygen generator, a breathing machine and the like. The ventilation therapy device includes a system load and a heating load, and the non-isolated power circuit 20 is used to power the heating load, such as a heating plate in the ventilation therapy device. The isolated power circuit 30 is mainly used for supplying power to a system load, the voltage required by the system load is low, a transformer can be used for converting high voltage into low voltage required by the system load, and the system load can be a control chip, a sensor and other components.
In the embodiment of the application, the ventilation treatment device adopts the power module, the power module comprises an EMC filter circuit 10, a heat dissipation component, a non-isolated power circuit 20 and an isolated power circuit 30 which are positioned on the same circuit board, the input end of the EMC filter circuit 10 is used for connecting a power supply 40, and the output end of the EMC filter circuit 10 is respectively connected with the non-isolated power circuit 20 and the isolated power circuit 30; the heat dissipation assembly is used for dissipating heat of the EMC filter circuit 10, the isolated power supply circuit 30 and the non-isolated power supply circuit 20. The non-isolated power supply circuit 20 and the isolated power supply circuit 30 share the EMC filter circuit 10 and the radiating component, and the EMC filter circuit 10 and the radiating structure are not required to be arranged for the non-isolated power supply circuit 20 and the isolated power supply circuit 30 respectively and independently, so that circuit components are saved, the space utilization rate is improved, and the production cost and the development difficulty are reduced.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.
Claims (10)
1. A power module, comprising: EMC filter circuit, radiating component, non-isolated power circuit and isolated power circuit on the same circuit board;
the input end of the EMC filter circuit is used for being connected with a power supply;
the output end of the EMC filter circuit is connected with the non-isolated power supply circuit and the isolated power supply circuit respectively;
the heat dissipation assembly is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit.
2. The power module of claim 1, wherein the EMC filter circuit comprises: a piezoresistor;
the two ends of the piezoresistor are respectively connected with a live wire and a zero wire of the EMC filter circuit;
the non-isolated power supply circuit is connected to two ends of the piezoresistor.
3. The power module of claim 2, wherein the EMC filter circuit further comprises: a capacitor;
two ends of the capacitor are respectively connected with a live wire and a zero wire of the EMC filter circuit;
the isolation power supply circuit is connected to two ends of the capacitor.
4. A power module according to claim 3, wherein an inductance is provided between the varistor and the capacitor.
5. The power module of claim 4, wherein the EMC filter circuit further comprises: a fuse;
the fuse is arranged between the piezoresistor and the power supply.
6. The power module of claim 1, wherein the isolated power circuit comprises: the first rectifying circuit, the input filter circuit, the transformer and the output filter circuit are connected in sequence;
the input end of the first rectifying circuit is connected with the EMC filter circuit;
and the output end of the output filter circuit is used for connecting with a system load.
7. The power module of claim 1 wherein the non-isolated power supply circuit comprises: the second rectifying circuit, the stabilized voltage supply, the power driving and controlling circuit;
the input end of the second rectifying circuit is connected with the EMC filter circuit;
the output end of the second rectifying circuit is respectively connected with the stabilized voltage power supply and the power drive;
the control circuit is respectively connected with the power drive and the stabilized voltage supply.
8. The power module of claim 1, wherein the heat sink assembly comprises a first heat sink, a second heat sink, and a third heat sink;
the first heat dissipation piece is used for dissipating heat of the EMC filter circuit, the isolation power supply circuit and the non-isolation power supply circuit;
the second heat dissipation part is close to the EMC filter circuit and the isolation power supply circuit and is used for dissipating heat of the EMC filter circuit and the isolation power supply circuit;
the third heat dissipation piece is close to the non-isolated power supply circuit and used for dissipating heat of the non-isolated power supply circuit.
9. The power module of claim 8, wherein the first heat sink, the second heat sink, and the third heat sink are one or a combination of aluminum profile ultrasonic heat sinks and stamped aluminum plate heat sinks.
10. A ventilation therapy apparatus, comprising: the power module of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223470904.XU CN219145230U (en) | 2022-12-23 | 2022-12-23 | Power module and ventilation treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223470904.XU CN219145230U (en) | 2022-12-23 | 2022-12-23 | Power module and ventilation treatment equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219145230U true CN219145230U (en) | 2023-06-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223470904.XU Active CN219145230U (en) | 2022-12-23 | 2022-12-23 | Power module and ventilation treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219145230U (en) |
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- 2022-12-23 CN CN202223470904.XU patent/CN219145230U/en active Active
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