WO2011140944A1

WO2011140944A1 - Machine cabinet

Info

Publication number: WO2011140944A1
Application number: PCT/CN2011/073628
Authority: WO
Inventors: 王涛; 张运辉
Original assignee: 华为技术有限公司
Priority date: 2010-06-28
Filing date: 2011-05-04
Publication date: 2011-11-17
Also published as: DE202011102372U1; CN101873790A

Abstract

A machine cabinet is provided by the present invention, which belongs to the technical field of heat dissipation. The machine cabinet in the embodiment of the present invention is designed for reducing the noise while ensuring the heat dissipation ability. The machine cabinet includes a machine cabinet body, at least one sidewall of the machine cabinet body includes a double-layer wall (1) comprising an inner wall (11) and an outer wall (12); a heat conductive plate (2) is arranged between the inner wall (11) and the outer wall (12), the heat conductive plate (2) is a folded plate with grooves and bulges arranged continuously and alternatively, the heat conductive plate (2) separates a space between the inner wall (11) and the outer wall (12); thereinto, the space between the outer wall (12) and the heat conductive plate (2) is connected with the environment to form an outer circulating air channel (3), so as to exchange air with environment; the space between the inner wall (11) and the heat conductive plate (2) is connected with an inner part of the machine cabinet to form an inner circulating air channel (4), so as to exchange air with the inner part of the machine cabinet; the air in the inner circulating air channel (4) exchanges heat with the air in the outer circulating air channel (3) by the heat conducting plate (2). The embodiment of the present invention is applied for heat dissipation of the machine cabinet.

Description

TECHNICAL FIELD The present invention relates to the field of heat dissipation technologies, and in particular, to a machine rejection. BACKGROUND OF THE INVENTION Machine rejection with good heat dissipation capability is an important condition for the maintenance machine to reject the normal operation of the internal electronic equipment. There are many ways to reduce the heat dissipation of electronic equipment. At present, there are heat exchanger cooling schemes and direct ventilation cooling schemes.

The heat exchanger heat dissipation scheme can form an air-to-air heat exchange system by using a fan and a heat exchange core, and a plurality of fans are disposed on both sides of the heat exchange core, and the two sides of the exchange core respectively constitute a gas flow inner circulation and an outer circulation air passage of the machine rejection . The heat exchange between the internal and external circulation ducts of the machine is rejected by the heat exchange core. The direct ventilation heat dissipation scheme is to prevent the airflow between the internal and external environment from being passed through, and the machine refuses to filter the dust through the dustproof net with the external environment, and the fan that the machine rejects drives the gas to flow, thereby speeding up the heat dissipation.

In the process of implementing the present invention, the inventors found that the prior art has at least the following disadvantages: In the heat exchanger heat dissipation scheme and the direct ventilation heat dissipation scheme, the fan generates high noise during operation. SUMMARY OF THE INVENTION Embodiments of the present invention provide a machine rejection with low noise.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

The machine rejects the body, the at least one wall of the machine body includes a double wall, which is an inner wall and an outer wall respectively; a heat conducting plate is disposed between the inner wall and the outer wall, and the heat conducting plate is Continually alternately provided with an iHJ groove and a raised pleat plate, the heat conducting plate separating the space between the inner wall and the outer wall; wherein

The space between the outer wall and the heat conducting plate communicates with the outside to form an outer circulation air passage for gas exchange with the outside; The space between the inner wall and the heat conducting plate communicates with the machine to form an inner circulation wind to exchange gas with the machine interior; heat exchange is performed.

The machine provided by the embodiment of the invention rejects heat exchange between the inside and the outside through the pleated heat-conducting plate. For the same heat-conducting material, the heat-distributing plate is formed into a pleat shape in which the protrusion and the groove alternately can increase the heat dissipation in the unit space. The area ensures the heat dissipation capability of the machine; at the same time, by providing a heat conducting plate between the inner wall and the outer wall of the double wall, the heat conducting plate physically isolates the machine from the space rejected by the machine, thereby preventing the machine from diffusing noise to the outside. The ability is greatly weakened. Because the heat dissipation capacity of the heat-dissipating plate of the pleated shape is much higher than that of the flat plate, for applications with low heat dissipation capability, the module for enhancing heat dissipation in the outer circulation air passage can also meet the heat dissipation requirement by relying on natural heat dissipation, thereby further reducing noise. . DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a top view of a machine rejection in accordance with a first embodiment of the present invention;

2 is a schematic cross-sectional view of a heat conducting plate with a secondary embossing pattern in the first embodiment of the present invention;

3 is a schematic view showing the installation of a Great Wall shaped heat conducting plate according to Embodiment 1 of the present invention;

4 is a schematic view showing the installation of a reinforcing rib according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a three-dimensional structure of the machine in the second embodiment of the present invention; FIG.

6 is a schematic cross-sectional view of a machine in the second embodiment of the present invention;

7 is a schematic cross-sectional view of a heat conducting plate according to Embodiment 2 of the present invention;

Figure 8 is a schematic view showing the three-way structure of the third machine of the present invention;

9 is a schematic cross-sectional view of a machine in the third embodiment of the present invention;

10 is a schematic cross-sectional view of a machine in the fourth embodiment of the present invention;

11 is a schematic cross-sectional view of a machine in accordance with a fifth embodiment of the present invention; 12 is a schematic view showing the flanges at both ends of a heat conducting plate according to Embodiment 1 of the present invention;

Figure 13 is a schematic view showing the opening of the inner wall in the second embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Embodiment 1

The embodiments of the present invention aim to provide a machine rejection capable of reducing noise while ensuring heat dissipation capability.

Referring to FIG. 1 , a top view of an embodiment of the present invention, the machine rejection of the embodiment of the present invention includes a machine reject body, and at least one wall of the machine reject body includes a double wall 1 , which is an inner wall 11 and an outer wall 12 respectively; A heat conducting plate 2 is disposed between the outer wall 12 and the outer wall 12, and the heat conducting plate is a pleated plate continuously provided with grooves and protrusions, and the heat conducting plate 2 connects the inner wall 1 1 and the outer wall 12 Space separation; the space between the outer wall 12 and the heat conducting plate 2 communicates with the outside to form an outer circulation air passage 3 for gas exchange with the outside; a space between the inner wall 11 and the heat conducting plate 2 The inner circulation duct 4 is formed to communicate with the machine to form an inner circulation duct 4 for performing gas exchange with the machine interior; the gas in the inner circulation duct 4 and the gas in the outer circulation duct 3 exchange heat through the heat conducting plate 2 .

The heat conducting plate separates the space between the double walls into two parts that are not in communication with each other, so that the exchange of heat between the machine and the machine is performed on the heat conducting plate. The inner circulation duct includes a groove or a raised space on one side of the heat conducting plate, and the outer circulating duct includes a groove or a raised space on the other side of the heat conducting plate. The electronic equipment inside the machine refuses to generate heat during operation, so the internal temperature of the machine is higher than the external temperature, and the machine refuses to contact the internal gas with a surface of the heat conducting plate to transfer heat to the heat conducting plate. Because of the temperature difference between the inner and outer circulating air passages, the outside world The gas circulates into the outer circulation duct, taking away the heat accumulated on the heat conducting plate, thereby realizing the machine to reject the internal heat to dissipate heat to the outside.

Further, the heat conducting plate is made of a thermally conductive metal or a non-metal moldable material.

In the application of thermal conductive materials, aluminum has good thermal conductivity and is therefore in the field of heat dissipation. There are a wide range of applications, and embodiments of the invention may preferably be pleated thermally conductive sheets made of aluminum. Further, the surface of the heat conducting plate made of aluminum can be treated to make the heat conducting plate have fireproof and anticorrosive properties.

The machine provided by the embodiment of the invention rejects heat exchange between the inside and the outside through the pleated heat conducting plate. For the same heat conductive material, the heat conductive plate is formed into a pleat shape in which the protrusion and the groove alternately can increase the heat dissipation in the unit space. The area ensures the heat dissipation capability of the machine; at the same time, by providing a heat conducting plate between the inner wall and the outer wall of the double wall, the heat conducting plate physically isolates the space between the machine and the machine, so that the machine refuses to diffuse the noise to the outside. The ability is greatly weakened. Because the heat dissipation capacity of the heat-dissipating plate of the pleated shape is much higher than that of the flat plate, for applications with low heat dissipation capability, the module for enhancing heat dissipation in the outer circulation air passage can also meet the heat dissipation requirement by relying on natural heat dissipation, thereby further reducing noise. .

Referring to FIG. 2, further, the surface of the heat conducting plate is provided with a concave and convex line.

The surface of the heat conducting plate has a secondary embossing pattern, which can further increase the heat radiating area of the heat conducting plate, thereby improving the heat dissipation capability.

Further, the machine is internally provided with a wind guiding unit for guiding the flowing gas to the gas inlet of the inner circulation air passage.

In the embodiment of the present invention, the flowing gas entering the inner circulation air channel is derived from the self-owned fan of the internal electronic device, and the air flow generated by the own fan of the electronic device is guided to the inlet of the inner circulation air passage through the air guiding unit. The air guiding unit may be a duct or may be a duct having a special structure to guide the flow direction of the flowing gas.

Further, the machine interior includes an enhanced heat dissipation module for enhancing gas flow in the machine.

In the case that the power consumption of the electronic device is relatively large, the self-contained heat dissipation module of the electronic device is insufficient to meet the heat dissipation requirement, so the enhanced heat dissipation module independent of the electronic device is set in the machine rejection to strengthen the inner and inner circulation air passages of the machine. The gas flows, thereby accelerating the heat exchange rate between the heat conducting plate and the gas in the outer circulation duct. The reinforced heat dissipation module may be installed at the inlet of the inner circulation air passage to directly blow the airflow to the inner circulation air passage; or may be installed at the top of the machine rejection or at other positions, and guide the gas to the inner circulation air passage through the air guiding unit. Entrance. The reinforced heat dissipation module may include a plurality of fans and include associated structural members for mounting and securing the fans.

Further, a reinforced heat dissipation module is disposed in the outer circulation air passage for enhancing gas flow in the outer circulation air passage. In the case that the power consumption of the electronic device is relatively large or the external temperature environment is relatively bad, the embodiment of the present invention can also provide an enhanced heat dissipation module in the outer circulation air passage to accelerate the gas flow in the outer circulation air passage, thereby accelerating the heat dissipation of the heat conduction plate. Speed, the reinforced heat dissipation module may also be a related structural member including a plurality of fans and including a fan for mounting and fixing.

The heat conducting plate of the embodiment of the present invention is a pleated plate having continuously alternating iHJ grooves and protrusions, and the heat transfer plate groove or the protrusion has a cross-sectional shape of at least one of a rectangular shape, a U shape, a V shape, and a trapezoid shape. .

Further, the heat conducting plate is adhered to the inner wall; wherein both ends of the groove or the protrusion of the heat conducting plate forming the inner circulation air passage are closed.

Referring to Fig. 3, in the embodiment of the present invention, the heat conducting plate 2 is attached to the outside of the inner wall 11 (the inner wall is facing the inner surface of the machine), and the vertical cross-sectional area of the heat conducting plate may be smaller than the double wall area. When the heat conducting plate is attached to the inner wall, the inner circulation air passage includes a groove (protrusion) space of one side of the heat conducting plate, and also includes a gap space between the heat conducting plate and the inner wall which may exist; the outer circulation air passage includes All the rest of the space between the double walls.

It can be known from the above that when the distance between the inner wall and the outer wall is greater than the height of the groove or protrusion of the heat conducting plate, when the vertical sectional area of the heat conducting plate is smaller than the wall area, the space of the outer circulating air passage is larger than the inner circulating wind. The space of the road, which is especially suitable for the natural heat dissipation of the outer circulation air duct, is because the outer circulation air passage has no forced gas circulation module, so the gas circulation capacity is weak, and the space of the outer circulation air passage is increased, which can alleviate The heat in the outer circulation duct accumulates.

Further, the inner circulation air passage space formed by the heat conducting plate IHJ groove or the protrusion is smaller than the outer circulation air passage space formed by the heat conducting plate iHJ groove or the protrusion. The specific method may be to adjust the width or depth of each groove or protrusion corresponding to the circulation air passage and the outer circulation air passage in the heat conducting plate.

In this way, by adjusting the space enclosed by the groove or the protrusion of the heat conducting plate, the space corresponding to the inner and outer circulating air passages is further adjusted.

In order to achieve complete isolation of the space on both sides of the heat conducting plate, one of the technical means that can be taken is to seal the heat conducting plate attached to the inner wall. Sealing the heat conducting plate includes sealing the sealing material with a certain mounting pressure at the pleated plate and the machine repulsion; and sealing at both ends of the pleated plate by means of a sealing structure and dipping.

Referring to FIG. 3, for the closing of the two ends of the heat conducting plate, the two ends of the heat conducting plate groove (protrusion) 6 corresponding to the inner wall 11 are sealed, and the vertical air channel surrounded by the groove (protrusion) is two. The end is sealed. The closed implementation of the two ends of the heat conducting plate can be sealed with a metal structural member or a plastic member.

The specific structure of the metal structural member for closing the two ends of the heat conducting plate is as follows: After the pleated plate is formed, the side edge 61 is turned into a 90° flange on the side of the inner circulation air passage 3, and the structure after the burring is completed is as shown in FIG. 12, and the invention is implemented. For example, the first crimping seal is realized by using the edge material. The size of the flange is determined according to the spacing of the pleats. The two flanges are butt or overlap to achieve the first sealing. After that, the two sides of the pleat plate are the same as the shape of the pleat section. The comb "type structure is sealed by riveting or other connection methods; finally, the final sealing of the two ends of the pleated plate is achieved by dipping.

The specific method of sealing the two ends of the heat-conducting plate of the plastic parts is as follows: The pleated plate is sealed at the end by a plastic part, and the plastic head piece is made, the formed pleated plate is put on the head piece, and then the dipping is used to achieve the sealing.

Referring to Fig. 4, further, the reinforcing ribs 5 are added in the direction in which the grooves and the projections of the heat conducting plate 2 are arranged with each other, so that the heat conducting plate can better maintain the pleated shape.

Embodiment 2

The embodiments of the present invention are further described in detail based on the first embodiment.

In the embodiment of the present invention, the inner circulation air passage and the outer circulation air passage are both exemplified by natural heat dissipation.

Referring to FIG. 13, in the embodiment of the present invention, the double wall is a wall body in the vertical direction of the machine, and the upper and lower positions of the inner wall 11 are respectively provided with a first opening 62 and a second An opening 63 for allowing a flowing gas to enter the inner circulation duct, and a second opening 63 for discharging the gas in the inner circulation duct.

In the embodiment of the present invention, the flow air in the machine rejection is derived from the heat dissipation module of the internal electronic device, and the air guiding unit is installed above the heat dissipation module of the electronic device to guide the flowing air to the upper part of the inner wall. The opening is made to allow the flowing gas to enter the inner circulation air passage from the opening at the upper position of the inner wall, and the gas is in contact with the heat conducting plate to transfer the heat to the heat conducting plate, and then the gas flows out from the opening at the lower position of the inner wall to the inner circulating air passage.

Further, referring to FIG. 5, the machine rejecting body is provided with a first opening and a second opening that communicate with the outer circulation air passage and the external environment; wherein, in the embodiment of the present invention, the first opening 81 Located at a lower position of the outer wall 12 for external gas to enter the outer circulation air passage; the second opening 82 is located at an upper position of the outer wall for gas to be discharged from the outer circulation air passage. Referring to Fig. 6, the flowing air in the machine is guided by the air guiding unit 7 to the upper opening of the inner wall, and flows along the groove toward the lower opening of the inner wall; the gas in the outer circulation duct contacts the heat conducting plate 2 to absorb the heat on the heat conducting plate 2. The temperature in the outer circulation air passage is higher than the outside, and the high temperature gas flows out from the upper position of the outer wall. Due to the convection of the gas, the gas with a lower external temperature opens from the lower position of the outer wall into the outer circulation air passage, and after absorbing heat, The outer circulation air passage flows out through the upper opening of the outer wall. The cross-sectional shape is described by taking a rectangular shape as an example. The rectangular cross-section 6 corresponding to the inner circulation air passage space has a width smaller than a width of the rectangular cross-section 9 corresponding to the outer circulation air passage space.

Because the outer circulation air duct uses natural heat dissipation, the gas convection effect is relatively weak. In order to ensure the heat dissipation effect of the outer circulation air passage, the flow space of the gas in the outer circulation air passage is increased.

Embodiment 3

In the embodiment of the present invention, the heat dissipation module is installed in the inner circulation air passage to perform heat dissipation and external circulation, and the natural heat dissipation is used as an example.

In the embodiment of the present invention, the double wall is a wall body in the vertical direction of the machine, and the two sides of the vertical wall each include a double wall, and an upper position and a lower position of the inner wall are respectively provided a first opening for introducing a flowing gas into the inner circulation air passage and a second opening for discharging the gas in the inner circulation air passage.

Further, the machine refuses to internally set the reinforced heat dissipation module, and the reinforced heat dissipation module can be placed at the upper position of the inner wall, and is blown in the form of a blower, and blows the inner circulation air passage toward the upper position of the inner wall, and drives the gas to circulate. The wind tunnel flows.

Further, referring to FIG. 8 , a lower opening 81 is disposed at a lower portion of the outer wall of the double wall for the outside air to enter the outer circulation air passage; a fourth opening 82 is disposed at a top position of the outer wall. For gas discharge from the outer circulation duct. Further, a folding baffle 10 is provided at the top opening of the machine to prevent dust and the like from entering the outer circulation air passage.

The gas in the outer circulation air channel is in contact with the heat conducting plate, absorbing heat from the heat conducting plate, so that the temperature in the outer circulating air channel is higher than the outside, and the gas having a high temperature flows out from the top position of the outer wall. Due to gas convection, the outside temperature is low. The gas enters the outer circulation air passage from the lower part of the outer wall, absorbs the heat, and then flows out of the outer circulation air passage through the top opening of the outer wall.

Further, if the environment is extremely harsh, the external heat dissipation of the outer circulation cannot be satisfied. For the heat dissipation requirement, referring to FIG. 9, in the embodiment of the present invention, the forced air cooling module 31 may be disposed on the top of the machine, and the forced air cooling module may be a fan frame, and the exhaust air is used to guide the gas to flow outward, thereby accelerating the outer circulation air passage. The flow velocity of the gas promotes the heat exchange between the outer circulation duct and the heat conducting plate to enhance the heat dissipation range.

Embodiment 4

In the embodiment of the present invention, an reinforced heat dissipation module is added to the inner and outer circulation air passages as an example.

In the embodiment of the present invention, the double wall is a wall body in the vertical direction of the machine, and the upper and lower positions of the inner wall are respectively provided with a first opening and a second opening, An opening is for passing the flowing gas into the inner circulation duct, and the second opening is for discharging the gas in the inner circulation duct.

Further, referring to FIG. 10, the machine refuses to internally set the reinforced heat dissipation module 41. The reinforced heat dissipation module is placed in the upper space of the machine rejection, and the air blowing unit is used, and the air guiding unit 71 is used to open the gas from the upper position of the inner wall. The hole flows inwardly through the air duct.

Further, the machine body is provided with a first opening and a second opening that communicate with the outer circulation air channel and the external environment; wherein the first opening connecting the external environment is used for external gas to enter the The outer circulation air passage; the second opening connected to the external environment, for discharging the gas to the outer circulation air passage. More specifically, the first opening connected to the external environment is located at a lower position of the machine rejecting body, and the second opening communicating with the external environment is located at an upper position of the rejecting body, and the first opening of the connected external environment The holes and the second openings are located in different walls to meet the need for heat dissipation in a particular environment.

Further, referring to FIG. 10, in order to increase the heat dissipation capability of the outer circulation air passage, an enhanced heat dissipation module 42 is disposed in the outer circulation air passage, the reinforcement heat dissipation module is located at the top of the machine rejection, and the second opening is flowed, and finally passes through the The second opening discharge machine refuses.

In the embodiment of the present invention, the enhanced heat dissipation module can take the form of a fan frame.

Further, the fan speed of the heat dissipation module in the outer circulation air passage is lower than the fan speed of the heat dissipation module in the inner circulation air passage.

It should be noted that, for the application of the reinforced heat dissipation module to the inner and outer circulation air passages, the inner circulation air passage space formed by the heat transfer plate groove or the protrusion may be equal to the heat conduction plate IHJ groove or the convex portion. The outer circulation air passage space formed may also be according to application requirements. Adjust the air duct space.

The heat conducting plate blocks the direct propagation of sound, and the sound that the machine refuses to propagate internally to the outside is blocked by the heat conducting plate, and the sound of the outer circulating air channel can be directly transmitted to the outside through the opening communicating with the outside, so it is low Under the application of noise, the strategy of differential speed regulation of internal and external circulation channels can be taken to reduce noise. The fan speed in the outer circulation duct is made smaller than the fan speed in the inner circulation duct. In general, the fan speed of the inner circulation duct is 10% higher than the fan speed of the outer circulation duct.

In the embodiment of the present invention, the heat conducting plate blocks the direct air passage of the machine to reject the internal propagating sound, so that the noise can be effectively reduced. In the application of high heat dissipation performance, the enhanced heat dissipation module is installed in the outer circulation air duct to realize the differential speed adjustment of the enhanced heat dissipation module of the inner and outer circulation air passages, and the noise is effectively reduced under the condition of increasing the heat dissipation performance.

Embodiment 5

In the embodiment of the present invention, an reinforced heat dissipation module is added to the inner and outer circulation air passages as an example. In the embodiment of the present invention, one wall of the vertical direction comprises a double wall, the upper part of the inner wall of the double wall is provided with a first opening, and the lower part of the inner wall is provided with a second opening.

Referring to Fig. 11, the machine is configured to reinforce the internal heat transfer module 41 for reinforcing the circulation of the inner circulation air passage, and is placed at the opening of the inner wall, and blows the gas directly into the inner circulation air passage by blowing.

Further, the machine body is provided with a first opening and a second opening that communicate with the outer circulation air passage and the external environment; the first opening and the second opening are respectively located at a lower portion of the outer wall of the double wall And the upper part.

Further, referring to FIG. 11, the reinforced heat dissipation module 42 in the outer circulation air passage is placed at the lower opening of the outer wall, and the external air is directly introduced into the outer circulation air passage by the exhaust air, and the gas is exchanged with the heat conduction plate. The outer circulation air passage flows out from the upper opening of the outer wall.

The embodiment of the invention is particularly suitable for outdoor machine rejection, but can also be applied to indoor machine rejection. The above embodiments of the present invention are exemplified by a vertical wall body with a double wall located on the body of the machine, which refers to the natural convection direction of the hot and cold gas, especially for the outer circulation air passage, which uses a natural heat dissipation method (ie, external circulation). The application of the enhanced heat dissipation module is not particularly important, and the heat dissipation effect is particularly obvious. However, the present invention can also provide the top wall or the bottom wall as a double wall depending on the application. Similarly, the orientation of the inner and outer circulation ducts of the present invention can also be changed based on different applications.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. Other embodiments of the present invention, for example, the pleat shape of the heat conducting plate of the embodiment of the present invention is changed within the protection range of the embodiment of the present invention; for example, the modification of the mounting position and the mounting method of the heat conducting plate in the double wall Any change without departing from the technical solution of the present invention; or, the number of openings and the position of the opening of the inner and outer circulation air passages, and the installation position of the reinforcing heat dissipation module are all changes that can be considered by the technical solution of the present invention. In summary, the above disclosure is only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims

Claim

A machine rejection, comprising a machine body, wherein: at least one wall of the machine body comprises a double wall, respectively an inner wall and an outer wall; and a heat conducting plate is disposed between the inner wall and the outer wall The heat conducting plate is a pleated plate in which IHJ grooves and protrusions are alternately arranged, and the heat conducting plate isolates a space between the inner wall and the outer wall;

The space between the outer wall and the heat conducting plate communicates with the outside to form an outer circulation air passage to exchange gas with the outside;

The inner wall and the heat conducting plate communicate with each other to form an inner circulating air to exchange gas with the inner portion of the heat rejecting body;

2. The machine according to claim 1, wherein the surface of the heat conducting plate has a concave-convex texture.

3. The machine according to claim 1, wherein: said heat conducting plate is adhered to said inner wall; wherein said inner circulation wind is formed

Closed.

4. The machine according to claim 3, wherein the heat transfer plate has a groove or a convex cross-sectional shape of at least one of a rectangular shape, a U shape, a V shape, and a trapezoidal shape.

5. The machine reject according to claim 3, wherein: said inner circulation air passage space formed by said heat conducting plate groove or projection is smaller than said air conduction plate IHJ groove or projection External circulation air duct space.

6. The machine reject according to claim 3, wherein: the double wall is a wall body in the vertical direction of the machine rejecting body, and the upper position and the lower position of the inner wall are respectively provided with a first opening a hole and a second opening; wherein the first opening is for causing the machine to reject the flowing gas into the inner circulation air passage, and the second opening is for discharging the gas in the inner circulation air passage.

7. The machine reject according to claim 3, wherein: said machine rejecting interior comprises an enhanced heat dissipation module for enhancing said machine to reject internal gas flow.

8. The machine reject according to claim 3, wherein: said machine is internally provided with an air guiding unit for guiding the flowing gas to the gas inlet of said inner circulation duct.

9. The machine rejection according to claim 3, wherein: said machine rejection body is provided with a connection a first opening and a second opening through the outer circulation air passage and the external environment; wherein, the outside air enters the outer circulation air passage through the first opening, and the second opening The outer circulation duct is discharged.

10. A machine rejection according to claim 3 or 9, characterized in that:

An reinforced heat dissipation module is disposed in the outer circulation air passage for enhancing gas flow in the outer circulation air passage.

The machine refusal of claim 10, wherein: the reinforced heat dissipation module comprises a fan; wherein a fan speed of the reinforced heat dissipation module in the outer circulation air passage is lower than a fan of the machine reinforced inner heat dissipation module Rotating speed.

12. The machine reject according to claim 1, wherein: said heat conducting plate is made of a thermally conductive metal or a non-metal moldable material.