CN215762324U

CN215762324U - Anesthesia machine, veterinary anesthesia machine and fan subassembly

Info

Publication number: CN215762324U
Application number: CN202023352171.0U
Authority: CN
Inventors: 李继成; 邬学涛
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-02-08
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an anesthesia machine, a veterinary anesthesia machine and a fan assembly, wherein the anesthesia machine comprises a driving gas branch, a fresh gas branch and a breathing loop, the fresh gas branch is used for sending fresh gas with anesthetic gas into the breathing loop, the driving gas branch is used for pushing the fresh gas in the breathing loop to a patient, the driving gas branch comprises a fan assembly, the fan assembly comprises a machine shell, a fan and a first noise reduction assembly, the machine shell is provided with a first inner cavity, a partition plate is arranged inside the machine shell to divide the first inner cavity into a first cavity and a second cavity, the partition plate is provided with a vent hole communicated with the first cavity and the second cavity, the machine shell is provided with a first air inlet communicated with the first cavity and a first air outlet communicated with the second cavity, the fan is arranged in the second cavity, and the fan is used for driving air to enter the second cavity from the first air inlet and blow out from the first air outlet, in first chamber was located to first noise reduction subassembly, first noise reduction subassembly was used for cutting down the fan noise of following first air intake exhaust.

Description

Anesthesia machine, veterinary anesthesia machine and fan subassembly

Technical Field

The utility model relates to the field of medical instruments, in particular to an anesthesia machine, a veterinary anesthesia machine and a fan assembly.

Background

The fan component of the existing anesthesia machine can generate larger noise when the fan in the shell runs, and the part of noise is diffused to the outside of the shell to influence the rest of a patient.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides an anesthesia machine, an anesthesia machine for animals and a blower assembly.

The utility model provides an anesthesia machine, which comprises a driving gas branch, a fresh gas branch and a breathing circuit, wherein the fresh gas branch is used for delivering fresh gas with anesthesia gas into the breathing circuit, the driving gas branch is used for pushing the fresh gas in the breathing circuit to a patient, the driving gas branch comprises a fan component, and the fan component comprises:

the air conditioner comprises a shell, a first air inlet and a second air outlet, wherein the shell is provided with a first inner cavity, a partition plate is arranged in the shell to divide the first inner cavity into a first cavity and a second cavity, the partition plate is provided with a vent hole communicated with the first cavity and the second cavity, and the shell is provided with a first air inlet communicated with the first cavity and a first air outlet communicated with the second cavity;

the fan is arranged in the second chamber and used for driving air to enter the second chamber from the first air inlet and blow out from the first air outlet;

the first noise reduction assembly is arranged in the first cavity and used for reducing fan noise exhausted from the first air inlet.

A second aspect of the present invention provides a veterinary anesthesia machine, including a driving gas branch, a fresh gas branch and a breathing circuit, wherein the fresh gas branch is used to send fresh gas with anesthesia gas into the breathing circuit, the driving gas branch is used to push the fresh gas in the breathing circuit to a target, the driving gas branch includes a blower assembly, and the blower assembly includes:

A third aspect of the present invention provides a fan assembly comprising:

According to the technical scheme, the first noise reduction assembly is arranged in the first chamber to reduce the noise of the fan exhausted from the first air inlet, so that the influence of the noise on a patient can be effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a block diagram of a local structure of an anesthesia machine according to an embodiment of the present application;

fig. 2 is a schematic connection diagram of a driving gas branch, a fresh gas branch and a breathing circuit of an anesthesia machine according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a fan assembly according to an embodiment of the present disclosure;

FIG. 4 is an exploded schematic view of a first perspective of a fan assembly according to an embodiment of the present disclosure;

FIG. 5 is an exploded schematic view of a second perspective of a fan assembly according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of several noise reduction channels proposed in the embodiments of the present application;

fig. 7 is a schematic structural view of a first heat dissipation element according to an embodiment of the present application;

FIG. 8 is a schematic structural diagram of a first elastic support according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a second elastic supporting element according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

As shown in fig. 1 to 5, an anesthesia apparatus according to an embodiment of the present invention includes a driving gas branch 100, a fresh gas branch 200 and a breathing circuit 300, wherein the fresh gas branch 200 is used for delivering fresh gas with anesthesia gas into the breathing circuit 300, the driving gas branch 100 is used for delivering fresh gas in the breathing circuit 300 to a patient, the driving gas branch 100 includes a blower assembly 10, the blower assembly 10 includes a housing 11, a blower 12 and a first noise reduction assembly 13, the housing 11 has a first inner cavity, a partition 111 is disposed inside the housing 11 to divide the first inner cavity into a first chamber 112 and a second chamber 113, the partition 111 has a vent 1111 communicating the first chamber 112 and the second chamber 113, the housing 11 has a first air inlet 114 communicating the first chamber 112 and a first air outlet 115 communicating the second chamber 113, the blower 12 is disposed inside the second chamber 113, the blower 12 is used for driving air to enter the second chamber 113 from the first air inlet 114 and blow out from the first air outlet 115 The first noise reduction assembly 13 is disposed in the first chamber 112, and the first noise reduction assembly 13 is configured to reduce noise of the fan 12 discharged from the first inlet 114.

For example, fig. 2 shows the connection of the driving gas branch 100, the fresh gas branch 200 and the breathing circuit 300, in one embodiment, the breathing circuit 300 includes a mechanically controlled driving assembly 301, a main pipe 302, an inhalation check valve 303, a gas supply pipe 304, an exhalation check valve 305, a return gas pipe 306 and a carbon dioxide absorption tank 307. A supply air pipe 304 is connected to one end of the main pipe 302, and a suction check valve 303 and a carbon dioxide absorption tank 307 are installed to the supply air pipe 304. A return air duct 306 connects the supply air duct 304 and the main duct 302, and an expiratory check valve 305 is mounted to the return air duct 306. The mechanically controlled driving assembly 301 includes an air box 3011 and a folded air bag 3012, and the folded air bag 3012 is communicated with the other end of the main pipeline 302. The driving gas branch 100 is communicated with a cavity formed by enclosing the bellows 3011 and the folded airbag 3012. The fresh gas branch 200 is connected between the suction check valve 303 and the carbon dioxide absorption tank 307. In operation, the gas exhaled from the patient enters the folded air bag 3012 through the exhalation check valve 305 and the main pipe 302, the driving gas branch 100 provides driving gas into a cavity formed by the air box 3011 and the folded air bag 3012, the driving gas compresses the folded air bag 3012, so that the exhaled gas from the patient is delivered to the carbon dioxide absorption tank 307 through the main pipe 302, the carbon dioxide in the exhaled gas is absorbed by the carbon dioxide absorption tank 307, and the gas coming out of the carbon dioxide absorption tank 307 is mixed with the fresh gas supplied by the fresh gas branch 200 and delivered to the patient through the gas supply pipe 304.

The anesthesia machine of the present embodiment can effectively reduce the influence of noise on the patient by disposing the first noise reduction assembly 13 in the first chamber 112 to reduce the noise of the blower 12 discharged from the first air inlet 114.

Optionally, the first noise reduction assembly 13 is provided with a noise reduction channel 131, one end of the noise reduction channel 131 is communicated with the ventilation opening 1111, and the other end of the noise reduction channel 131 is communicated with the first air inlet 114. On one hand, the noise reduction channel 131 is used to communicate the first air inlet 114 and the ventilation opening 1111, so that the air outside the fan assembly 10 can enter the second chamber 113 through the first air inlet 114, the noise reduction channel 131 and the ventilation opening 1111, and on the other hand, the noise reduction channel 131 is used to reduce the noise generated during the operation of the fan 12, and reduce the noise from being diffused out from the first air inlet 114.

Optionally, the noise reduction channel 131 is helical. The noise can be better absorbed by the first noise reduction assembly 13 after the spiral noise reduction channel 131 is spiraled for a plurality of times, so that the noise can be better attenuated.

Of course, the noise reduction channel 131 is not limited to be provided in a spiral shape, for example, the noise reduction channel 131 may be provided in a straight line shape as shown in fig. 6a, or an L shape as shown in fig. 6b, or a honeycomb shape as shown in fig. 6c, or a wave shape as shown in fig. 6d, 6e and 6 f.

Optionally, the first noise reduction assembly 13 includes an upper clamp plate 132, a lower clamp plate 133, and a screw structure 134 clamped between the upper clamp plate 132 and the lower clamp plate 133, the upper clamp plate 132, the lower clamp plate 133, and the screw structure 134 enclose the noise reduction channel 131, and the lower clamp plate 133 is provided with an opening 1331 communicating the noise reduction channel 131 and the ventilation opening 1111. The first noise reduction assembly 13 formed by the combination of the upper clamp 132, the lower clamp 133, and the helical structure 134 facilitates manufacturing and assembly.

Optionally, the first noise reduction assembly 13 is a first noise reduction assembly 13 made of a porous foam material. Illustratively, the porous foaming material can be sound-absorbing sponge, and the sound-absorbing sponge has good sound-absorbing effect and low cost.

Optionally, one of the first noise reduction assembly 13 and the partition plate 111 is provided with a fool-proof hole 1332, and the other of the first noise reduction assembly 13 and the partition plate 111 is provided with a fool-proof post, the fool-proof post being disposed through the fool-proof hole 1332. Through the cooperation that sets up fool-proof post and fool-proof hole 1332, do benefit to the assembly of first noise reduction subassembly 13, can effectively avoid first noise reduction subassembly 13 mistake in installation to lead to first noise reduction subassembly 13 to block up the condition emergence of first air intake 114 and vent 1111.

Optionally, the housing 11 is further provided with a third chamber 116 communicated with the second chamber 113 and a third air outlet 117 communicated with the third chamber 116, and the first air outlet 115 is communicated with the third chamber 116.

Optionally, the fan assembly 10 further includes a second noise reduction assembly disposed within the third chamber 116. The second noise reduction component is configured to reduce noise of the fan 12 discharged from the third air outlet 117, and the setting manner of the second noise reduction component may refer to the first noise reduction component 13, which is not described herein.

Optionally, the inner side wall of the second chamber 113 is provided with a noise reduction sponge, and the noise reduction sponge is arranged to further reduce noise in the operation of the fan 12.

As shown in fig. 4 to 5 and 7, optionally, the fan 12 includes a volute 121, an impeller (not shown) rotatably installed in the volute 121, and a motor 123 installed in the volute 121 and connected to the impeller for driving the impeller to rotate, wherein a vent 1111 is opposite to the motor 123, so that air entering the second chamber 113 from the vent 1111 is blown toward the motor 123 to carry heat generated by the motor 123 during operation.

Through setting up first air intake 114 and motor 123 relatively, the air current that gets into second cavity 113 from first air intake 114 blows to motor 123 and can carry away the heat that produces when motor 123 moves, plays the radiating effect to motor 123, and this embodiment has utilized the structural design of fan subassembly 10 itself ingeniously, and heat radiation structure is simple, and is with low costs.

Optionally, the volute 121 includes a second inner cavity 1211, a second air inlet 1212 communicating with the second inner cavity 1211, and a second air outlet 1213 communicating with the second inner cavity 1211, the impeller is disposed in the second inner cavity 1211, the second air outlet 1213 is communicated with the first air outlet 115, and the second air inlet 1212 is disposed opposite to the air outlet 1111.

By arranging the second air inlet 1212 to face away from the first air inlet 114, after the air entering the second chamber 113 from the first air inlet 114 passes through the motor 123 and before the air enters the second air inlet 1212, the air flow passes through the outer side wall of the volute 121, so that heat transferred to the volute 121 by the motor 123 can be carried away, and a heat dissipation effect is further performed on the fan 12. Of course, the second air inlet 1212 is not limited to be disposed at a side opposite to the first air inlet 114, and may be disposed at other positions of the volute 121, depending on the actual design requirement.

Optionally, the fan assembly 10 further includes a first heat sink 14 mounted to the motor 123. The first heat sink 14 may serve to accelerate heat dissipation from the motor 123.

Alternatively, the first heat sink 14 includes a connection part 141 and a heat sink 142, the connection part 141 being connected with the motor 123, and the heat sink 142 being connected with the connection part 141 for increasing a heat dissipation area. In some embodiments, the first heat dissipation element 14 may also be provided without the heat sink 142.

Optionally, the first heat dissipation element 14 is made of a copper-based or aluminum-based metal material, which has a good thermal conductivity, can provide a good heat dissipation effect for the motor 123, and is low in cost.

Optionally, the connecting portion 141 is annular, the connecting portion 141 is sleeved on the motor 123, the number of the heat dissipation fins 142 is multiple, and the plurality of heat dissipation fins 142 are arranged around the outer side wall of the connecting portion 141 at intervals. Motor 123 is located through setting up connecting portion 141 cover to can play even heat dissipation, the radiating effect is good to motor 123. Of course, the connection portion 141 is not limited to be provided in a ring shape, and may be provided in other shapes as long as the connection portion 141 has a heat dissipation effect on the motor 123 by connecting the motor 123 and the heat sink 142.

Optionally, the at least one heat sink 142 includes a fixing portion 1421 and two sub heat sinks 1422, one end of the fixing portion 1421 is connected to the connecting portion 141, and the other end of the fixing portion 1421 is connected to the two sub heat sinks 1422, which may further achieve the effects of enlarging the heat dissipation area and accelerating the heat dissipation of the motor 123.

Optionally, the fan assembly 10 further includes a second heat dissipation member 15, the second heat dissipation member 15 is disposed between the first heat dissipation member 14 and the casing 11, and the second heat dissipation member 15 is used for guiding heat of the first heat dissipation member 14 to the casing 11.

Optionally, the second heat dissipation element 15 is one of a thermal conductive paste, a thermal conductive adhesive, a thermal conductive pad, and a liquid metal. Preferably, the second heat dissipating member 15 is an elastic heat conductive pad, which can attenuate the transmission of the vibration of the motor 123 to the case 11 through the first heat dissipating member 14, thereby reducing the generation of noise.

Optionally, the housing 11 is made of a metal material. The metal material has good heat conductivity, and can quickly conduct heat generated by the motor 123 to the housing 11 and diffuse the heat through the housing 11. Alternative metallic materials include copper-based or aluminum-based metallic materials. Of course, the housing 11 is not limited to be made of metal material, for example, the housing 11 may be made of heat conductive plastic. Examples of heat-conducting plastics include PP (polypropylene), ABS (Acrylonitrile Butadiene Styrene plastic), PC (Polycarbonate), PA (Nylon Polyamide), LCP (Liquid Crystal Polymer, industrial Liquid Crystal Polymer), PPs (polyphenylene sulfide plastic), PEEK (PEEK materials).

It should be noted that the casing 11 does not necessarily need to be entirely made of a metal material or a heat conductive plastic, and in some embodiments, only a part of the first heat dissipation member 14 is in contact with the casing 11 through the second heat dissipation member 15, and in this embodiment, it is also possible to configure the casing 11 such that only the side wall in contact with the second heat dissipation member 15 is made of a metal material or a heat conductive plastic.

Optionally, the heat sink 142 includes a first end 1423 and a second end 1424, the first end 1423 is connected to the connection portion 141, at least a portion of the second end 1424 of the heat sink 142 is provided with a contact portion 1425 disposed at an angle to the heat sink 142, the plurality of contact portions 1425 are disposed on the same plane, or the plurality of contact portions 1425 are connected to form a contact plate, and the second heat sink 15 is interposed between the contact portion 1425 and the housing 11. By providing the contact portions 1425 and disposing or connecting the plurality of contact portions 1425 in the same plane as the contact plate, the connection between the heat sink 142 and the housing 11 is facilitated, and the contact area between the heat sink 142 and the housing 11 can be enlarged, thereby accelerating the heat transfer from the heat sink 142 to the housing 11.

As shown in fig. 4 to 5 and 8 to 9, optionally, the fan assembly 10 further includes a first elastic support 16 and a second elastic support 17, the enclosure 11 includes a bottom plate 118 opposite to the partition 111, the first elastic support 16 is interposed between the partition 111 and the top of the fan 12, and the second elastic support 17 is interposed between the bottom plate 118 and the bottom of the fan 12. The first elastic supporting member 16 and the second elastic supporting member 17 can absorb vibration, thereby preventing vibration generated when the fan 12 operates from being directly transmitted to the cabinet 11 to cause noise.

Optionally, the first elastic supporting member 16 and the second elastic supporting member 17 are made of a silicone material.

Optionally, the partition 111 of the casing 11 is convexly provided with a mounting portion 1112 toward the second chamber 113, the first elastic support 16 is provided with a mounting groove 161 matching with the mounting portion 1112 in shape, the first elastic support 16 is mounted on the partition 111 by embedding the mounting portion 1112 in the mounting groove 161, and the top of the fan 12 abuts against the first elastic support 16. Exemplarily, the number of the mounting portions 1112 is four, four mounting portions 1112 are distributed at equal intervals on the circumference, the first elastic support 16 includes a body 162 and four petal bodies 163 distributed at equal intervals around the body 162, each petal body 163 is provided with one mounting groove 161, and the four mounting portions 1112 are respectively embedded in the four petal bodies 163.

Optionally, the second elastic supporting element 17 is disposed around the second air inlet 1212 in a surrounding manner, and a gap 171 communicating with the second air inlet 1212 is disposed on a side wall of the second elastic supporting element 17. The gas flows through the gap 171 to the second intake vent 1212 and enters the second chamber 113 from the second intake vent 1212. In other embodiments, the side wall of the second elastic supporting member 17 may not be provided with the notch 171, for example, the second elastic supporting member 17 may be disposed to be spaced apart from the bottom plate 118, and the gas flows from the side of the second elastic supporting member 17 facing the bottom plate 118 to the second air inlet 1212.

Optionally, the bottom plate 118 of the chassis 11 is convexly provided with a mounting post 119, the bottom of the second elastic supporting member 17 is provided with a mounting hole 172, the second elastic supporting member 17 is mounted on the bottom plate 118 by embedding the mounting post 119 in the mounting hole 172, and the bottom of the fan 12 abuts against the second elastic supporting member 17. Illustratively, the number of mounting posts 119 is three, the number of mounting holes 172 is three, and the three mounting posts 119 are respectively embedded in the three mounting holes 172.

Optionally, the inner side wall of the second elastic support 17 is provided with a plurality of spaced ribs 173, the bottom of the fan 12 abuts against the ribs 173, and the ribs 173 can reduce the contact area between the fan 12 and the second elastic support 17 and reduce the vibration of the fan 12 transmitted to the bottom plate 118 through the second elastic support 17.

Optionally, the anesthesia apparatus further comprises a fan disposed outside the housing 11, wherein the fan is configured to generate an airflow blowing toward the housing 11, and the airflow can carry away heat from the housing 11, so as to accelerate heat dissipation of the housing 11, and thus accelerate heat dissipation of the motor 123.

As shown in fig. 1 to 5, an embodiment of the present invention further provides an anesthesia apparatus for animals, which includes a driving gas branch 100, a fresh gas branch 200 and a breathing circuit 300, wherein the fresh gas branch 200 is used for sending fresh gas with anesthetic gas into the breathing circuit 300, the driving gas branch 100 is used for pushing fresh gas in the breathing circuit 300 to a target, the driving gas branch 100 includes a blower assembly 10, the blower assembly 10 includes a housing 11, a blower 12 and a first noise reduction assembly 13, the housing 11 has a first inner cavity, a partition 111 is disposed inside the housing 11 to divide the first inner cavity into a first chamber 112 and a second chamber 113, the partition 111 has a vent 1111 that communicates the first chamber 112 and the second chamber 113, the housing 11 has a first air inlet 114 that communicates the first chamber 112 and a first air outlet 115 that communicates the second chamber 113, the blower 12 is disposed in the second chamber 113, the fan 12 is used for driving air to enter the second chamber 113 from the first air inlet 114 and blow out from the first air outlet 115, the first noise reduction assembly 13 is disposed in the first chamber 112, and the first noise reduction assembly 13 is used for reducing noise of the fan 12 discharged from the first air inlet 114.

While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An anesthesia machine comprising a drive gas branch, a fresh gas branch and a breathing circuit, wherein the fresh gas branch is used to deliver fresh gas with anesthetic gases into the breathing circuit, the drive gas branch is used to deliver fresh gas in the breathing circuit to a patient, the drive gas branch comprises a blower assembly, the blower assembly comprises:

2. The anesthesia apparatus of claim 1, wherein the first noise reduction assembly defines a noise reduction channel, one end of the noise reduction channel is in communication with the vent, and the other end of the noise reduction channel is in communication with the first air inlet.

3. The anesthesia machine of claim 2, wherein said noise reduction channel is linear or L-shaped or helical or honeycomb or wave-shaped.

4. The anesthesia apparatus of claim 3, wherein the first noise reduction assembly comprises an upper clamping plate, a lower clamping plate and a spiral structural member clamped between the upper clamping plate and the lower clamping plate, the upper clamping plate, the lower clamping plate and the spiral structural member enclose the noise reduction channel, and the lower clamping plate is provided with an opening communicating the noise reduction channel and the ventilation opening.

5. The anesthesia machine of claim 1, wherein the first noise reduction assembly is a first noise reduction assembly made of a porous foam material.

6. The anesthesia machine of claim 1, wherein one of the first noise reduction assembly and the partition plate is provided with a fool-proof hole, and the other of the first noise reduction assembly and the partition plate is provided with a fool-proof post, the fool-proof post being disposed through the fool-proof hole.

7. The anesthesia machine of claim 1, wherein the blower comprises:

a volute;

the impeller is rotatably arranged in the volute;

the motor is arranged on the volute and connected with the impeller and is used for driving the impeller to rotate;

wherein the vent is opposite to the motor, so that the air entering the second chamber from the vent is blown to the motor to carry away the heat generated by the motor during operation.

8. The anesthesia apparatus of claim 7, wherein the volute comprises a second inner chamber, a second air inlet communicating with the second inner chamber, and a second air outlet communicating with the second inner chamber, the impeller is disposed in the second inner chamber, and the second air outlet is communicated with the first air outlet, wherein the second air inlet is disposed opposite to the vent.

9. The anesthesia machine of claim 7, wherein said fan assembly further comprises a first heat sink mounted to said motor.

10. The anesthesia machine of claim 9, wherein said first heat dissipation member comprises:

a connecting part connected with the motor;

and the radiating fins are connected with the connecting parts and used for increasing the radiating area.

11. The anesthesia machine of claim 10, wherein the connecting portion is annular, the motor is sleeved with the connecting portion, the number of the heat dissipation fins is multiple, and the heat dissipation fins are arranged around the outer side wall of the connecting portion at intervals.

12. The anesthesia machine of claim 11, wherein said fan assembly further comprises a second heat sink disposed between said first heat sink and said housing, said second heat sink for directing heat from said first heat sink to said housing.

13. The anesthesia apparatus of claim 12, wherein the heat sink comprises a first end and a second end, the first end is connected to the connecting portion, at least a portion of the second end of the heat sink is provided with a contact portion disposed at an angle to the heat sink, the plurality of contact portions are disposed in a same plane, or the plurality of contact portions are connected to form a contact plate, and the second heat sink is interposed between the contact portion and the housing.

14. The anesthesia apparatus of claim 12, wherein the housing is made of metal; alternatively, the first and second electrodes may be,

the shell is made of heat dissipation plastic; alternatively, the first and second electrodes may be,

the side wall of the shell, which is in contact with the second heat dissipation part, is made of metal materials or heat dissipation plastics.

15. The anesthesia machine of claim 8, wherein the blower assembly further comprises a first resilient support member and a second resilient support member, the housing comprises a bottom plate opposite the partition, the first resilient support member is sandwiched between the partition and the top of the blower, and the second resilient support member is sandwiched between the bottom plate and the bottom of the blower.

16. The anesthesia apparatus of claim 15, wherein the second resilient support member is disposed around the second inlet opening, and a gap is disposed on a sidewall of the second resilient support member and communicates with the second inlet opening.

17. The anesthesia machine of claim 1, wherein the housing further comprises a third chamber and a third air outlet in communication with the third chamber, the first air outlet being in communication with the third chamber.

18. The anesthesia machine of claim 17, wherein said blower assembly further comprises a second noise reduction assembly, said second noise reduction assembly being disposed within said third chamber.

19. The utility model provides a veterinary anesthesia machine which characterized in that, includes drive gas branch road, fresh gas branch road and breathing circuit, wherein, fresh gas branch road is used for sending into with the fresh gas who has anesthetic gas breathing circuit, drive gas branch road is used for propelling movement fresh gas to the target in the breathing circuit, drive gas branch road includes the fan subassembly, the fan subassembly includes:

20. A fan assembly, comprising: