CN117156766B

CN117156766B - Resonator

Info

Publication number: CN117156766B
Application number: CN202311417803.2A
Authority: CN
Inventors: 谷玉麒; 万永钢; 陈刚
Original assignee: Suzhou Haobo Medical Instrument Co ltd
Current assignee: Suzhou Haobo Medical Instrument Co ltd
Priority date: 2023-10-30
Filing date: 2023-10-30
Publication date: 2024-01-30
Anticipated expiration: 2043-10-30
Also published as: CN117156766A

Abstract

The invention discloses a resonator, which comprises a shell and a cover body with a ventilation function, wherein the cover body is detachably connected with the shell, the cover body and the shell are mutually communicated to form a cavity, and a fan and a resonance piece positioned above the fan are arranged in the cavity; the inner wall of the cover body is connected with a plurality of air guide pieces, a second air vent penetrating through the curved surface of the cover body is arranged in the air guide pieces, and the second air vent is used for outputting air flow towards the adjacent air guide pieces and enabling the air flow output from the second air vent to flow in a cyclone mode. In this application, through set up the cyclone that the air guide piece made the inside air formation circumferencial direction of getting into the lid on the inner wall of lid, be the cyclone and flow the air fully contact resonance piece, and accelerate the exchange efficiency of cavity inside air, can not exist the hot air and detain in the top of cavity for a long time simultaneously, consequently show the radiating efficiency who improves the resonance piece.

Description

Resonator

Technical Field

The invention relates to the field of resonators, in particular to a resonator.

Background

A resonator refers to an electronic component generating a resonance frequency, and mainly functions as frequency control, and all electronic products related to frequency transmission and reception require a resonator, so that the resonator can be applied to electronic products in the medical field. In the medical field, an LC resonator is a circuit consisting of an inductance L and a capacitance C, and can generate a signal of a specific frequency or receive a signal from a composite signal of a plurality of specific frequencies. The circuit formed by the inductor L and the capacitor C is divided according to a connection mode, and the LC circuit can be divided into a series LC resonant circuit and a parallel LC resonant circuit.

The common planar spiral coil in the current resonator market utilizes the inductance of the coil and a capacitor matched with the coil to complete impedance matching under specific frequency, and as the spiral coil tap is often positioned at the root of the coil, the step-up ratio during high-frequency power output is very high and often exceeds 10KV, so that the working current in a resonant circuit is large, and meanwhile, the resonator generates heat and expands during working due to low internal heat dissipation efficiency, so that LC parameters in the whole resonant circuit are changed, output detuning is caused, and the resonator is provided for solving the technical problem.

Disclosure of Invention

The invention aims to solve the problem of output detuning caused by poor heat dissipation effect of a resonator in the prior art, and provides the resonator.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the resonator comprises a shell and a cover body with a ventilation function, wherein the cover body is detachably connected with the shell, the cover body and the shell are mutually communicated to form a cavity, and a fan and a resonance piece positioned above the fan are arranged in the cavity; the inner wall of the cover body is connected with a plurality of air guide pieces, a second air vent penetrating through the curved surface of the cover body is arranged in the air guide pieces, and the second air vent is used for outputting air flow towards the adjacent air guide pieces and enabling the air flow output from the second air vent to flow in a cyclone mode; the resonance piece comprises an inductance coil and a capacitor, wherein the inductance coil is arranged close to the air guide piece, the capacitor is arranged below the inductance coil, a heat insulation piece is arranged between the inductance coil and the capacitor, the heat insulation piece comprises a heat insulation plate with a circular structure, a third air vent is formed in the middle of the heat insulation plate, and the heat insulation plate is used for layering the cavities; wherein a fan is arranged below the capacitor.

Preferably, the air guide member has a block structure or a tubular structure, and an inclined plane is arranged on the air guide member.

Preferably, two ends of the second ventilation hole are respectively provided with an air inlet and an air outlet, wherein an included angle between the inclined plane of the air guide piece and the air outlet is an acute angle; the air inlet hole of the second air vent penetrates through the curved surface of the cover body, and the air outlet faces the inclined surface of the air guide piece.

Preferably, the fans are fixed on the bottom plate, wherein the number of the fans is 2; the bottom plate is arranged at the lower end of the shell, and the bottom plate and the shell are of an integrated structure; the bottom plate is further provided with 2 first ventilation holes, and the positions of the first ventilation holes and the positions of the fans are correspondingly arranged.

Preferably, the heat insulating member further comprises a second top plate connected above the heat insulating plate, and a first vertical plate and a second vertical plate connected between the heat insulating plate and the second top plate, wherein the air flow formed above the heat insulating plate does not directly enter the third ventilation hole through the arrangement of the first vertical plate and the second vertical plate.

Preferably, the first vertical plates and the second vertical plates are of arc structures, and the number of the first vertical plates and the number of the second vertical plates are the same, wherein the number of the first vertical plates is 3, and the first vertical plates and the second vertical plates are arranged in a circumferential array; the outer diameter of the second vertical plate is smaller than the inner diameter of the first vertical plate, the second vertical plate is positioned between 2 adjacent first vertical plates, and the arc length of the second vertical plate is larger than the distance between 2 adjacent first vertical plates; the inner diameter of the second vertical plate is not smaller than the diameter of the third ventilation hole.

Preferably, the capacitor includes a first capacitor plate and a second capacitor plate, wherein the first capacitor plate is a capacitor plate with a fixed value, the number of the second capacitor plates is 2, and the second capacitor plates are respectively arranged at the upper end and the lower end of the first capacitor plate, and the second capacitor plates are fine tuning capacitor plates.

Preferably, the heat insulating piece further comprises a heat insulating ring, wherein the heat insulating ring is arranged in the middle of the heat insulating piece, and the size of the heat insulating ring is smaller than that of the third ventilation hole, so that the heat insulating ring is placed in the third ventilation hole; wherein the lower end of the heat insulation ring is abutted on the second capacitor plate positioned above.

Preferably, the heat insulation ring and the second top plate are integrally connected, and the end face of the heat insulation ring is of a waist-shaped structure.

Preferably, the cover body further comprises a first top plate arranged at one end of the cover body and a protruding portion integrally connected with the first top plate, wherein the protruding portion is located in the middle of the first top plate, and the protruding portion and the first top plate are integrally connected or detachably connected.

The beneficial effects are that: be connected with a plurality of wind-guiding pieces on the inner wall of lid in this application, and be provided with the second ventilation hole that runs through the curved surface of lid in the wind-guiding piece, wherein the second ventilation hole is used for exporting the air current towards adjacent wind-guiding piece, and wherein the inductance coil in the resonance piece is close to the wind-guiding piece setting, makes the air that gets into the lid inside form the cyclone that the circumferencial direction flows through setting up the wind-guiding piece on the inner wall of lid, is the inductance coil in the full contact resonance piece of air that the cyclone flows, and quickens the exchange efficiency of cavity inside air, can not exist the long-time top of detention in the cavity simultaneously, consequently show the radiating efficiency who improves the resonance piece. Through add first riser, second riser and second roof on the heat insulating board messenger heat insulating board top's air current does not directly flow to the middle part of third ventilation hole, will flow to the third ventilation hole with the dispersed mode after the air current that gets into the heat insulating board top gets into the heat insulating part, avoid the air current with the cyclone mode to concentrate the middle part of flowing to the third ventilation hole, avoid concentrating simultaneously and act on the condenser, wherein the air current that gets into the heat insulating part can not be to the outside diffusion of heat insulating part. The capacitor comprises a first capacitor plate with a fixed capacitance value and a second capacitor plate for fine adjustment of the capacitance value, the middle part of the heat insulation piece is provided with a heat insulation ring, one end of the heat insulation ring is abutted on the second capacitor plate above, so that the contact area between the air flow entering the third ventilation hole and the second capacitor plate is reduced, and the influence of the air flow and the attached temperature on the second capacitor plate is further reduced.

Drawings

Fig. 1 is a perspective view of a resonator according to the present invention;

FIG. 2 is a perspective view of a resonator according to the present invention;

FIG. 3 is a front view of a resonator according to the present invention;

fig. 4 is a bottom view of a cover of a resonator according to the present invention;

fig. 5 is a perspective view of a cover of a resonator according to the present invention;

fig. 6 is a bottom view of a cover of a resonator according to the present invention;

FIG. 7 is a cross-sectional view taken at A-A of FIG. 3;

FIG. 8 is an enlarged view at B of FIG. 7;

FIG. 9 is a perspective view of a heat shield for a resonator according to the present invention;

FIG. 10 is a perspective view of a resonator element of a resonator according to the present invention;

FIG. 11 is a front view of a resonator element of a resonator according to the present invention;

FIG. 12 is a perspective view of a heat shield for a resonator according to the present invention;

FIG. 13 is a front view of a thermal shield for a resonator according to the present invention;

FIG. 14 is a cross-sectional view taken at C-C of FIG. 13;

FIG. 15 is a cross-sectional view taken at C-C of FIG. 13;

fig. 16 is a cross-sectional view at C-C of fig. 13.

Legend description:

1. a housing; 11. a bottom plate; 110. a first vent; 21. a cover body; 210. a second vent hole; 211. an air guide member; 22. a first top plate; 23. a boss; 3. an inductance coil; 41. a first capacitive plate; 42. a second capacitive plate; 5. a heat insulating plate; 50. a third vent hole; 51. a second top plate; 52. a first riser; 53. a second riser; 54. a heat insulating ring; 6. a cavity; 7. a fan.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is evident that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be either fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between 2 elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Example 1

Referring to fig. 1-16, an embodiment of the present invention provides a resonator, including a housing 1 with a ventilation function and a cover 21, where the cover 21 and the housing 1 are detachably connected, and the cover 21 and the housing 1 are mutually communicated to form a cavity 6;

a fan 7 and a resonance piece positioned above the fan 7 are arranged in the cavity 6; the resonance member in the embodiment is used as a heating source, and when the fan 7 rotates to work, the heat in the cavity 6 is discharged to the outside of the shell 1;

the inner wall of the cover 21 is connected with a plurality of air guide members 211, wherein the air guide members 211 are provided with second ventilation holes 210 penetrating through the curved surface of the cover 21; in this embodiment, the air flow output from the second ventilation holes 210 faces the adjacent air guide 211, and the air flow output from the second ventilation holes 210 flows in a cyclone manner;

the air guide 211 is in a block structure or a tubular structure, and an inclined plane is arranged on the air guide 211;

the two ends of the second ventilation hole 210 are respectively provided with an air inlet and an air outlet;

wherein the included angle between the inclined surface of the air guide 211 and the air outlet is an acute angle;

the air inlet of the second air vent 210 penetrates through the curved surface of the cover 21, the air outlet of the second air vent 210 faces the inclined surface of the air guide 211, and the air flow bulges out from the air outlet of the second air vent 210.

In this embodiment, the fan 7 is driven to rotate, and when the fan 7 works, air in the cavity 6 is discharged to the outside of the shell 1, so that negative pressure is formed in the cavity 6; the cover 21 has a ventilation function by arranging the air guide 211, wherein the air inlet of the air guide 211 penetrates through the curved surface of the cover 21, and the fan 7 continuously works to continuously form negative pressure in the cavity 6, so that air outside the cover 21 continuously flows from the air inlet of the air guide 211 to the inside of the cover 21, wherein the air entering the air guide 211 directly bulges to the inclined surface of the other air guide 211, so that the air entering the cover 21 forms a cyclone flowing in the circumferential direction, and the air flowing in the cyclone flows to the fan 7 through the resonance part. By arranging the air guide 211 on the inner wall of the cover 21, the air entering the cavity 6 fully contacts the resonance member, the exchange efficiency of the air inside the cavity 6 is quickened, and meanwhile, the hot air cannot stay above the cavity 6 for a long time, so that the heat dissipation efficiency of the resonance member is remarkably improved.

Example two

Referring to fig. 1-9, the present embodiment is different from the embodiment in that the number of fans 7 is at least 1;

the fan 7 is fixed on the bottom plate 11, wherein the bottom plate 11 is arranged at the lower end of the shell 1, and the bottom plate 11 and the shell 1 are of an integrated structure;

the bottom plate 11 is also provided with at least 1 first ventilation holes 110, wherein the positions of the first ventilation holes 110 and the positions of the fans 7 are correspondingly arranged; when the number of fans 7 and the number of first ventilation holes 110 are the same in the present embodiment, the aperture of the first ventilation holes 110 and the size of the fans 7 are the same; when the number of fans 7 is greater than the number of first ventilation holes 110, the aperture of the first ventilation holes 110 is greater than the size of the fans 7, and the fans 7 are placed in the first ventilation holes 110; when the number of the first ventilation holes 110 is greater than the number of the fans 7, the aperture of the first ventilation holes 110 is smaller than the size of the fans 7;

when the number of fans 7 is 1, the fans 7 are placed in the middle of the bottom plate 11; when the number of the fans 7 is 2, the fans 7 are symmetrically fixed on the bottom plate 11, and when the number of the fans 7 is more than 3, the circumferential arrays of the fans 7 are fixed on the bottom plate 11;

the resonance piece comprises an inductance coil 3 and a capacitor, wherein the inductance coil 3 is arranged close to the air guide piece 211, the capacitor is arranged below the inductance coil 3, a heat insulation piece is further arranged between the inductance coil 3 and the capacitor, the heat insulation piece comprises a heat insulation plate 5 with a circular structure, and a third ventilation hole 50 is formed in the middle of the heat insulation plate 5; in the embodiment, the heat insulation plate 5 is formed by layering the cavities 6, and the cyclone air flow formed above the heat insulation plate 5 is concentrated to flow to the third air vent 50 through the third air vent 50 arranged in the middle of the heat insulation plate 5;

wherein a fan 7 is provided under the capacitor, and the air flow outputted from the third vent 50 acts on the capacitor before flowing to the fan 7.

In this embodiment, the number and the installation position of the fans 7 affect the stability of the airflow entering the cover 21 to form a cyclone, and the heat insulation board 5 can reduce the influence of the number and the position of the fans 7 on the airflow just entering the cover 21; the inductance coil 3 is arranged at a position corresponding to the position of the air guide 211, so that the air flow output from the air guide 211 flows in the circumferential direction, takes away the heat on the inductance coil 3 to form cyclone air flow, and flows to the third air vent 50. By providing the air guide 211 on the inner wall of the cover 21 and disposing the inductor 3 close to the air guide 211, the sufficiency of the air flow outputted from the air guide 211 and the inductor 3 in contact is significantly improved, and the heat generated by the inductor 3 itself is prevented from being retained above the heat insulating plate 5.

Example III

Referring to fig. 1 to 6 and fig. 10 to 14, the present embodiment is different from the second embodiment in that the heat insulating member further includes a second top plate 51 connected above the heat insulating plate 5, and a first vertical plate 52 and a second vertical plate 53 connected between the heat insulating plate 5 and the second top plate 51; the air flow formed above the heat insulating plate 5 is not directly introduced into the third ventilation hole 50 by providing the first and second risers 52 and 53;

wherein the first vertical plate 52 and the second vertical plate 53 are of arc-shaped structures, and the number of the first vertical plate 52 and the second vertical plate 53 is the same;

wherein the number of first risers 52 is at least 2 and the circumferential array is provided;

the outer diameter of the second riser 53 is smaller than the inner diameter of the first riser 52, wherein the second riser 53 is positioned between 2 adjacent first risers 52, and the arc length of the second riser 53 is larger than the distance between 2 adjacent first risers 52; in this embodiment, the first riser 52 and the second riser 53 are connected in five ways, one way is that the first riser 52, the second riser 53 and the second top plate 51 are all integrally connected, and the first riser 52 and the heat insulation plate 5 are detachably connected; one is that the first vertical plate 52, the second vertical plate 53 and the heat insulation plate 5 are all connected in an integral way, and the first vertical plate 52 and the second top plate 51 are detachably connected; one is that the first vertical plate 52, the second vertical plate 53, the second top plate 51 and the heat insulation plate 5 are all integrally connected; one is that the first vertical plate 52 and the second top plate 51 are integrally connected, the second vertical plate 53 and the heat insulation plate 5 are integrally connected, and the first vertical plate 52 and the heat insulation plate 5 are detachably connected; one is that the first vertical plate 52 and the heat insulation plate 5 are integrally connected, the second vertical plate 53 and the second top plate 51 are integrally connected, and the first vertical plate 52 and the second top plate 51 are detachably connected;

the inner diameter of the second riser 53 is not smaller than the diameter of the third ventilation hole 50;

the capacitor comprises a first capacitor plate 41 and a second capacitor plate 42, wherein the first capacitor plate 41 is a capacitor plate with a fixed value, and the number of the second capacitor plates 42 is 2 and is respectively arranged at the upper end and the lower end of the first capacitor plate 41; the second capacitor plate 42 in this embodiment is a trimming capacitor plate.

The heat insulating member in this embodiment includes the heat insulating plate 5, the first riser 52, the second riser 53 and the second top plate 51, and by adding the first riser 52, the second riser 53 and the second top plate 51 to the heat insulating plate 5, the air flow above the heat insulating plate 5 does not directly flow to the middle part of the third ventilation hole 50, because the air flow concentrated to the third ventilation hole 50 is concentrated in the middle part of the capacitor, the flow speed and the temperature of the air flow both affect the stability of the capacitance of the second capacitor plate 42; wherein the air flow above the heat insulating plate 5 is first introduced between the 2 adjacent first risers 52 by providing the heat insulating member inside the cavity 6, and the air flow introduced from the first risers 52 is prevented from directly flowing to the third ventilation holes 50 by providing the second risers 53, and thus flows to the channels between the first risers 52 and the second risers 53, and flows to the third ventilation holes 50 from the gaps between the 2 adjacent second risers 53. After entering the heat insulation piece, the air flow entering the upper part of the heat insulation plate 5 flows to the third air vent 50 in a dispersed manner, so that the air flow in a cyclone manner is prevented from flowing to the middle part of the third air vent 50 in a concentrated manner, and simultaneously, the concentrated action on the capacitor is prevented; wherein the air flow entering the insulation will not diffuse outside the insulation. The thermal shield in this embodiment may further reduce the effect of airflow and attendant temperature entering the third vent 50 on the second capacitive plate 42.

Example IV

Referring to fig. 1-6, 10-13, 15 and 16, the present embodiment is different from the third embodiment in that the heat insulating member further includes a heat insulating ring 54, wherein the heat insulating ring 54 is disposed at a middle portion of the heat insulating member;

the size of the heat insulation ring 54 is smaller than that of the third ventilation hole 50, so that the heat insulation ring 54 is placed in the third ventilation hole 50; wherein the lower end of the heat insulation ring 54 abuts on the second capacitor plate 42 located above;

the heat insulation ring 54 and the second top plate 51 are integrally connected or detachably connected;

the end face of the heat insulation ring 54 is one of a circular structure, a kidney-shaped structure, a rectangular structure and a regular polygon structure.

The middle part of the heat insulating member in this embodiment is provided with a heat insulating ring 54, wherein one end of the heat insulating ring 54 is abutted against the second capacitor plate 42, so that the contact area between the air flow entering the third ventilation hole 50 and the second capacitor plate 42 is reduced, and the influence of the air flow and the additional temperature on the second capacitor plate 42 is further reduced.

Example five

Referring to fig. 1-16, the difference between the present embodiment and the above embodiment is that the cover 21 further includes a first top plate 22 disposed at one end of the cover 21 and a protruding portion 23 disposed above the first top plate 22, wherein the cover 21 and the first top plate 22 are in an integral structure, and the top end of the cover 21 is closed by disposing the first top plate 22;

the convex part 23 is positioned in the middle of the first top plate 22;

the protruding part 23 and the first top plate 22 are integrally connected or detachably connected. The protruding portion 23 in the present embodiment is a flat plate structure or a plate structure with grooves;

the curved surface of the cover 21 in this embodiment balances the air pressure of the cavity 6 by providing the air guide 211, and further improves the accommodating space of the cover 21 by providing the protruding portion 23 above the first top plate 22; the first top plate 22 and the protruding portion 23 form a stepped cover body 21 structure, so that the length of a connecting piece for fixing the cover body 21 and the shell 1 can be reduced, the distance from the resonance piece to the protruding portion 23 is increased, heat generated by the resonance piece is reduced and transferred to the protruding portion 23, and obvious temperature rise on the surface of the cover body 21 is prevented.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present invention is not intended to be limiting, but rather, although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a resonator, includes casing (1) and lid (21) that have ventilation function, and wherein lid (21) and casing (1) are detachable connection, and communicates each other between lid (21) and casing (1) and form cavity (6), its characterized in that: a fan (7) and a resonance piece positioned above the fan (7) are arranged in the cavity (6); the inner wall of the cover body (21) is connected with a plurality of air guide pieces (211), a second air vent hole (210) penetrating through the curved surface of the cover body (21) is arranged in the air guide pieces (211), and the second air vent hole (210) is used for outputting air flow towards the adjacent air guide pieces (211) and enabling the air flow output from the second air vent hole (210) to flow in a cyclone mode; the resonance piece comprises an inductance coil (3) close to the air guide piece (211) and a capacitor positioned below the inductance coil (3), wherein a heat insulation piece is further arranged between the inductance coil (3) and the capacitor, the heat insulation piece comprises a heat insulation plate (5) with a circular structure, a third ventilation hole (50) is formed in the middle of the heat insulation plate (5), and the heat insulation plate (5) is used for layering the cavity (6); wherein a fan (7) is arranged below the capacitor.

2. The resonator according to claim 1, characterized in that: the air guide piece (211) is of a block structure or a tubular structure, and an inclined plane is arranged on the air guide piece (211).

3. A resonator according to claim 2, characterized in that: the two ends of the second ventilation hole (210) are respectively provided with an air inlet and an air outlet, wherein the included angle between the inclined plane of the air guide piece (211) and the air outlet is an acute angle; wherein the air inlet of the second air vent (210) penetrates through the curved surface of the cover body (21), and the air outlet faces the inclined surface of the air guide piece (211).

4. A resonator according to claim 3, characterized in that: the fans (7) are fixed on the bottom plate (11), wherein the number of the fans (7) is at least 1; wherein the bottom plate (11) is arranged at the lower end of the shell (1), and the bottom plate (11) and the shell (1) are of an integrated structure; wherein the bottom plate (11) is also provided with at least 1 first ventilation holes (110), and the positions of the first ventilation holes (110) and the positions of the fans (7) are correspondingly arranged.

5. A resonator according to any of claims 1-4, characterized in that: the heat insulating piece also comprises a second top plate (51) connected above the heat insulating plate (5), a first vertical plate (52) and a second vertical plate (53) which are connected between the heat insulating plate (5) and the second top plate (51), and the air flow formed above the heat insulating plate (5) is not directly led into the third ventilation hole (50) through the arrangement of the first vertical plate (52) and the second vertical plate (53).

6. The resonator according to claim 5, characterized in that: the first vertical plates (52) and the second vertical plates (53) are of arc structures, the number of the first vertical plates (52) is the same as that of the second vertical plates (53), and the number of the first vertical plates (52) is at least 2 and the first vertical plates are arranged in a circumferential array; the outer diameter of the second vertical plate (53) is smaller than the inner diameter of the first vertical plates (52), wherein the second vertical plates (53) are positioned between 2 adjacent first vertical plates (52), and the arc length of the second vertical plates (53) is larger than the distance between 2 adjacent first vertical plates (52); the inner diameter of the second vertical plate (53) is not smaller than the diameter of the third ventilation hole (50).

7. The resonator according to claim 6, characterized in that: the capacitor comprises a first capacitor plate (41) and a second capacitor plate (42), wherein the first capacitor plate (41) is a capacitor plate with a fixed value, the number of the second capacitor plates (42) is 2, and the second capacitor plates are respectively arranged at the upper end and the lower end of the first capacitor plate (41), and the second capacitor plate (42) is a trimming capacitor plate.

8. The resonator according to claim 7, characterized in that: the heat insulation part also comprises a heat insulation ring (54), wherein the heat insulation ring (54) is arranged in the middle of the heat insulation part, the size of the heat insulation ring (54) is smaller than that of the third ventilation hole (50), and the heat insulation ring (54) is placed in the third ventilation hole (50); wherein the lower end of the heat insulation ring (54) is abutted against the second capacitor plate (42) positioned above.

9. The resonator according to claim 8, characterized in that: the heat insulation ring (54) and the second top plate (51) are integrally connected or detachably connected, and the end face of the heat insulation ring (54) is one of a circular structure, a waist-shaped structure, a rectangular structure and a regular polygon structure.

10. A resonator according to any of claims 1-4, characterized in that: the cover body (21) further comprises a first top plate (22) arranged at one end of the cover body (21) and a protruding portion (23) integrally connected with the first top plate (22), wherein the protruding portion (23) is located in the middle of the first top plate (22), and the protruding portion (23) and the first top plate (22) are integrally connected or detachably connected.