TW201804890A - Heat dissipation system with air sensation function - Google Patents

Abstract

A heat dissipation system with air sensation function includes a chassis, multiple fans, multiple air sensation units and an external control device connected to the fans. The chassis has an installation face for installing the fans thereon. The air sensation units are respectively disposed on the fans for detecting the air state of the corresponding fans to generate an air sensation signal. The external control device serves to receive the air sensation signal transmitted from the air sensation units and compare the data contained in the air sensation signal with preset data so as to control/adjust the rotational speed of the corresponding fans. Accordingly, a uniform airflow flows out of the fans to effectively lower the noise.

Description

Thermal system with gas sensing

The present invention relates to a heat dissipation system, and more particularly to a heat dissipation system with gas sensing capable of controlling a uniform flow of air from a plurality of fans.

With the development and progress of network technology, the server market and demand are also increasing. The biggest feature of the server host is its powerful computing power. The more powerful the server host, the more its operation The higher the amount of heat generated, the longer it will affect the server's operating performance, and the more serious it will cause the server to be damaged. Therefore, in order to solve the above problems, the industry usually sets the server in a well-ventilated cabinet. . Please refer to FIG. 7. A conventionally known cabinet structure capable of accommodating various electronic devices is mainly an accommodation space in the cabinet 51 for accommodating various electronic devices (such as a server or other information equipment), and one side of the cabinet 51 is installed. A plurality of fans 52 are provided, and each fan 52 drives the air to flow, so that the air flow is generated to carry the heat generated by each electronic device out of the cabinet 51 so as to reduce the temperature of each electronic device. In addition, due to the increasing heat dissipation requirements of the cabinet 51, it is common to connect a plurality of fans 52 in the cabinet 51 in parallel to increase the cooling air volume. However, each fan 52 is arranged at a different position on one side of the cabinet 51, so that each fan 52 outflow air volume (or discharge air volume) is different, so that the airflow speed of each fan will be different, so there will be pressure changes due to different airflow speeds, so that the size of the overall flow field at the air outlet of the fans 52 varies. Eddy current 6, which is the source of noise.

Therefore, in order to effectively solve the above-mentioned problems, an object of the present invention is to provide a heat-dissipation system with gas sensing having the effect of reducing noise. Another object of the present invention is to provide a gas with an external control device that can control and adjust the rotation speed of each fan on a body, and then change the airflow speed (or airflow velocity), so as to achieve the effect of uniform airflow from each fan. Sensing cooling system. Another object of the present invention is to provide a heat-dissipating system with gas sensing, which can change the airflow speed (or airflow velocity) through the rotation speed of each fan on a body, so as to achieve the effect of uniform airflow from each fan. To achieve the above object, the present invention provides a heat-dissipation system with gas sensing, including a body, a plurality of gas sensing units, a plurality of fans, and an external control device. The body has at least one installation surface and an accommodation space. When the fans are arranged on the corresponding installation surface and opposite to the accommodation space, the gas sensing units are arranged on the corresponding fans, and each gas sensing unit is used to detect the gas corresponding to each fan. State (such as gas wind pressure or gas wind speed) to generate a gas sensing signal, and the external control device is connected to the fans and the gas sensing units, and the external control device transmits data according to the gas sensing units The data in the foregoing gas sensing signal is compared with a preset data. If the data in the gas sensing signal of at least one of the fans is different, the external control device controls and adjusts the speed of the at least one of the fans. Through the design of the system of the present invention, each fan is effectively made to flow out uniformly, so as to effectively achieve the effect of reducing noise. The invention also provides a heat radiation system with gas sensing, which includes a body, a plurality of fans, and a plurality of gas sensing units. The body has at least one installation surface and an accommodation space, and the fans are disposed on the corresponding installation surface. Above, and relative to the accommodating space, a processing unit is provided in each fan, the processing unit is used to control and drive the operation of the fan, and the gas sensing units are provided on the corresponding fans, each of the gas sensors The detecting unit is used for detecting a gas state (such as a gas wind pressure or a gas wind speed) corresponding to each fan to generate a gas sensing signal, and each gas sensing unit is connected to a processing unit opposite to each fan; The processing unit of each fan compares and processes the data in the aforementioned gas sensing signal with a preset data transmitted by the respective gas sensing unit. If each of the processing units compares each of the gas sensing signals in the gas sensing signal with each other, The data is different from the preset data, then the speed of each fan is controlled and adjusted. Through the design of the system of the present invention, each fan can effectively flow out uniformly to effectively reduce the airflow. Sound effects. In one implementation, each fan is provided with a frame and a wheel, the frame has an air inlet side, an air outlet side, and a first-rate channel, and the flow channel is located between the air inlet side and the air outlet side, and The air inlet side connects the air outlet side with the flow channel and the accommodation space, and the fan wheel is accommodated in the flow channel of the frame. In one implementation, the gas sensing units are disposed on the inner side of the frame at the air outlet side or the air inlet side. In one implementation, the gas sensing units are disposed on an inner side of the frame body in the flow channel. In an implementation, the external control device is accommodated in an accommodation space of the body and is located corresponding to the fans, and the external control device is a server or a notebook computer or a smart mobile device or a computer. In one implementation, the processing unit is a processor or a microcontroller. In an implementation, each of the gas sensing units is a wind speed sensor, and the wind speed sensor is used to detect a gas wind speed corresponding to a fan to generate the aforementioned gas sensing signal, and the data in the aforementioned gas sensing signal Contains a wind speed data, the preset data includes a preset wind speed data. In an implementation, each of the gas sensing units is a pressure sensor, and the pressure sensor is used to detect the gas pressure of the gas corresponding to the fan to generate the aforementioned gas sensing signal, and the gas sensing signal in the aforementioned gas sensing signal The data includes a wind pressure data, and the preset data includes a preset wind pressure data. In an implementation, each of the gas sensing units includes a microcontroller, a pressure sensor, and a temperature sensor. The pressure sensor is used to detect a gas pressure corresponding to a fan to generate a wind pressure. A sensing signal, the temperature sensor is used to detect the ambient temperature corresponding to the fan to generate a temperature sensing signal, and the microcontroller obtains a surrounding area according to a temperature value of the temperature sensing signal and a calibration data. Temperature value, the ambient temperature value and a wind pressure value of the wind pressure sensing signal are processed to generate the aforementioned gas sensing signal, and the data in the aforementioned gas sensing signal includes a corrected wind pressure data, The preset data includes a preset wind pressure data. In an implementation, if the external control device compares the data in the aforementioned sensing signals to the fans with the preset data, the external control device does not control and adjust the rotation speed of the fans. In one implementation, the installation surface has a plurality of installation holes, the installation holes penetrate the installation surface and communicate with the accommodation space, and the fans are installed in the corresponding installation holes.

The above-mentioned object of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the drawings. The present invention provides a heat-dissipating system with gas sensing. Please refer to Figs. 1, 2, and 4, which show the combination and disassembly and block diagrams of the first embodiment of the present invention, supplemented by reference to the 5C diagram. The heat sensing system with gas sensing includes a body 1, a plurality of fans 2, a plurality of gas sensing units 3, and an external control device 4. The body 1 is shown as a server cabinet in this embodiment, but is not limited thereto In specific implementation, it may also be a communication cabinet or other cabinets (such as a system monitoring cabinet, a broadcasting system cabinet, or a telecommunications cabinet) that can accommodate multiple electronic devices. And the body 1 has at least one installation surface 11 and an accommodation space 13. The accommodation space 13 is used to accommodate a plurality of electronic devices (such as a server; not shown in the figure). The installation surface 11 has a plurality of installation holes. 111, the mounting holes 111 penetrate the mounting surface 11, and each mounting hole 111 is provided at a different position on the mounting surface 11, as shown in FIG. 2, three rows of vertical mounting holes 111 and three rows of horizontal mounting holes 111 The plurality of mounting holes 111 are arranged in a substantially rectangular shape. The fans 2 are disposed in the corresponding mounting holes 111 and are opposite to the accommodation space 13. In this embodiment, the fans 2 represent nine fans 2 for generating a plurality of electronic devices in the body 1. The hot air is discharged outside the body 1. In an alternative embodiment, the fans 2 may also be designed to direct outside air into the body 1 to forcibly dissipate heat from a plurality of electronic devices. Each fan 2 is provided with a frame 22 and a fan 24. The frame 22 has an air inlet side 221, an air outlet side 222, and a first-rate channel 23, and the flow channel 23 is located on the air inlet side 221 and an outlet. Between the wind side 222, the air inlet side 221 communicates with the air outlet side 222, the flow channel 23 and the accommodation space 13, and the fan wheel 24 is accommodated in the flow channel 23 of the frame 22. The gas sensing units 3 are provided corresponding to the fans 2. The foregoing gas sensing units 3 in this embodiment indicate that one gas sensing unit 3 is a pressure sensor (or wind pressure sensor) device. On one fan 2, and the gas sensing unit 3 (that is, the pressure sensor) is disposed on the inside of the frame 22 at the air outlet side 222 of the fan 2 (as shown in FIG. 5C), each gas sensor The detecting unit 3 is used to detect the gas state corresponding to each fan 2 (such as the air pressure of the gas blown from the air-out side of each fan) to generate a gas sensing signal. The data in the gas sensing signal includes a Wind pressure data. In addition, in specific implementation, the gas sensing units 3 provided in each of the fans 2 are not limited to the above number, and a plurality of gas sensing units 3 (such as two or three) may be designed in each fan 2. More than one gas sensing unit 3), for example, the gas sensing unit 3 is provided on the inner side of the frame 22 at the air outlet side 222 and the air inlet side 221 of each fan 2, or the flow of each fan 2 A gas sensing unit 3 is provided on the inner side of the frame 22 of the channel 23, the air outlet side 222, and the air inlet side 221, thereby increasing the sensing accuracy through a plurality of gas sensing units 3. In another embodiment, as shown in FIG. 5A, each of the gas sensing units 3 is disposed on the inside of the frame 22 at the air inlet side 221 of each of the fans 2. In yet another embodiment, as shown in FIG. 5B, each of the gas sensing units 3 is disposed on the inner side of the frame 22 in the flow channel 23 of each of the fans 2. The aforementioned external control device 4 is electrically connected to the fans 2 and the gas sensing units 3, and the external control device 4 is shown as a notebook computer in this embodiment, and is accommodated in the housing 1 The space 13 corresponds to the fans 2. In an alternative embodiment, the external control device 4 may also select a smart mobile device or a computer. And the external control device 4 compares and processes the data (such as wind pressure data) in the aforementioned gas sensing signals transmitted by the gas sensing units 3 with a preset data (such as preset wind pressure data) to compare Whether the wind pressure data in the gas sensing signal of each fan 2 is the same as the preset data. If the external control device 4 compares the data in the gas sensing signal of each fan 2 with the preset data, Then, the external control device 4 does not control and adjust the rotation speed of the fans 2. At this time, the air outlet side 222 of the fans 2 as a whole emits a uniform airflow, so as to effectively achieve the effect of reducing noise. If the external control device 4 compares the data (such as wind pressure data) in the gas sensing signal of at least one fan 2 (such as two fans 2) with the preset data, the external control device 4 Preset data (such as preset wind pressure data) is used as a reference to adjust and adjust the rotation speed of two fans 2 different from the preset data to change the air pressure of the gas blown out by fan 2 until all fans 2 (that is, such as The data of the gas sensing signal of the fan 2) is the same as the aforementioned preset data, so that the airflow side 222 of the fans 2 emits a uniform airflow, and the overall flow field of the airflow side 222 of the fans 2 can also reach It is uniform to avoid the generation of eddy current, which can effectively reduce the noise. The aforementioned preset data includes the preset wind pressure data. In another embodiment, the external control device 4 performs a comparison process based on the data (such as wind pressure data) in the gas sensing signal transmitted from the gas sensing unit 3 of each fan 2 to compare all the fans. Whether the air pressure data in the gas sensing signals of 2 (that is, the fans 2) are the same, if the external control device 4 is the same as the data in the gas sensing signals of the fans 2, the external control device 4 The rotation speed of the fans 2 is not controlled and adjusted. At this time, the air outlet 222 of the fans 2 as a whole emits uniform airflow, so as to effectively achieve the effect of reducing noise. If the external control device 4 compares the data (such as wind pressure data) in the gas sensing signals of the fans 2 with the data (such as wind) in the gas sensing signals of at least one fan 2 (such as 2 fans 2). Pressure data) are different, the external control device 4 will use the data in the gas sensing signals of most of the same fans 2 as a reference to control and adjust the speed of a few different fans 2 (such as two fans 2) to change the fans. The air pressure of the blown gas 2 is adjusted until the data in the gas sensing signals of all the fans 2 (that is, the fans 2) are the same. At this time, the outlet side 222 of the fans 2 is caused to emit a uniform air flow. Therefore, through the design of the heat dissipation system of the present invention, the phenomenon that the wind speed of the air outlets of the multiple fans 2 on the conventional cabinet is uneven can be improved, and the effect of reducing noise can be achieved. Please refer to the first and fourth diagrams, which are three-dimensional and block diagrams of the second embodiment of the present invention, and refer to the fifth diagrams 5A, 5B, and 5C. The structure and connection relationship of this embodiment and its effects are roughly the same as The foregoing first embodiment is the same, and is not repeated here. This embodiment mainly redesigns the gas sensing unit 3 of the first embodiment as a pressure sensor and replaces it with a wind speed sensor, and redesigns the wind pressure data included in the preset data with a preset wind speed data ; In specific implementation, the preset data may also include preset wind speed data and wind pressure data. Each of the gas sensing units 3 is configured to detect a gas state corresponding to each fan 2 (such as the gas velocity of the gas blown out of the air-out side of each fan) to generate the aforementioned gas sensing signal, and the aforementioned gas sensing The data in the signal includes the aforementioned wind speed data, and the preset data includes the preset wind speed data. Therefore, the external control device 4 compares and processes the data (such as wind speed data) in the foregoing gas sensing signals transmitted by the gas sensing units 3 with the preset data (such as preset wind speed data) to compare Whether the wind speed data in the gas sensing signal of each fan 2 is the same as the preset data. If the external control device 4 compares the data in the gas sensing signal of each fan 2 with the preset data, the The external control device 4 does not control and adjust the rotation speed of the fans 2. At this time, the air outlet side 222 of the fans 2 as a whole emits uniform airflow, so as to effectively achieve the effect of reducing noise. If the external control device 4 compares the data (such as wind speed data) in the gas sensing signal of at least one fan 2 (such as two fans 2) with the preset data, the external control device 4 Set the data (such as the preset wind speed data) as the reference to adjust and adjust the speed of the two fans 2 that are different from the preset data, and then change the air speed of the gas blown out by the fan 2, and adjust it to all the fans 2 (that is, the fans 2) The data of the gas sensing signal is the same as the aforementioned preset data. At this time, the airflow side 222 of the fans 2 flows out uniformly, and the overall flow field of the airflow side 222 of the fans 2 can also be uniform. In order to avoid the generation of eddy current, the effect of reducing noise can be effectively achieved. Please refer to the 4A diagram, which is a three-dimensional and block diagram of the third embodiment of the present invention, and refer to the 1st, 5A, 5B, and 5C diagrams. The structure and connection relationship of this embodiment and its effect are roughly the same as The foregoing first embodiment is the same, and is not repeated here. The difference between the two is that each of the aforementioned gas sensing units 3 includes a microcontroller (MCU) 31, a pressure sensor 32, and a temperature sensor 33. The pressure sensor 32 is used to detect the corresponding The air pressure of the gas blown out (or out) of the fan 2 side to generate a wind pressure sensing signal. The temperature sensor 33 is used to detect the ambient temperature corresponding to the fan 2 to generate a temperature sensing. Signal, the microcontroller 31 calculates an ambient temperature value according to a temperature value of the temperature sensing signal and a calibration data, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal. That is, the microcontroller 31 receives the temperature value (uncompensated temperature value) of the temperature sensing signal and the correction data to perform a calculation process to obtain a compensated ambient temperature value (or a true ambient temperature value), and then The microcontroller 31 performs arithmetic processing on the compensated ambient temperature value and the wind pressure value of the wind pressure sensing signal to generate the aforementioned gas sensing signal and transmit it to the external control device 4. The data in the aforementioned gas sensing signal includes a corrected wind pressure data, and the preset data includes the preset wind pressure data. The aforementioned correction data is a correction coefficient for correcting the temperature value corresponding to the temperature sensing signal; and the manufacturer executes a test procedure to obtain the correction coefficient of each gas sensing unit 3 manufactured before leaving the factory, and the correction data is built-in A memory (e.g., random access memory (RAM), read-only memory (ROM), electronic erasable programmable read-only memory (EEPROM), flash memory, etc.) stored in each gas sensing unit 3 Memory or other memory; not shown). Therefore, the temperature-compensated gas sensing unit 3 can achieve a more accurate sensing effect. Please refer to the sixth diagram, which is a block diagram of the fourth embodiment of the present invention, and refer to the first, 5A, 5B, and 5C diagrams. The structure, connection relationship, and effect of this embodiment are substantially the same as those of the first embodiment, so it will not be repeated here; this embodiment mainly redesigns the external control device 4 of the first embodiment by each fan The processing unit 21 in 2 is replaced. As shown in the sixth figure, each fan 2 is provided with a processing unit 21 and a circuit board (not shown). The processing unit 21 may be a processor (Central processing unit). (CPU) or a microcontroller (Microprocessor control unit, MCU) for controlling and driving the fan 2 to run, and the processing unit 21 is disposed on the circuit board. The processing unit 21 of each fan 2 is electrically connected to the corresponding gas sensing unit 3, and the processing unit 21 of each fan 2 performs a comparison process according to the aforementioned gas sensing signal transmitted by the gas sensing unit 3 respectively. To compare whether the internal wind pressure data of each of the gas sensing signals is the same as a preset data (such as the preset wind pressure data). If the processing unit 21 of each fan 2 compares to the respective gas sensing signal, The internal data (such as wind pressure data) is the same as the aforementioned preset data, the processing unit 21 of each fan 2 does not control and adjust the rotation speed of the respective fan 2 because the aforementioned preset data in each fan 2 is In the same way, the outlet side 222 of the fans 2 as a whole makes a uniform air flow to effectively reduce the noise. The aforementioned preset data includes preset air volume data, preset wind speed data, and preset wind pressure data. If there is a processing unit 21 of two fans 2 that compares the data (such as wind pressure data) in the respective gas sensing signals with preset data (such as preset wind pressure data), the processing of two fans 2 Unit 21 controls and adjusts the rotation speed of each fan 2 to change the air pressure of the gas blown by fan 2 according to the preset data, and the processing units 21 of the two fans 2 will always adjust themselves to the same gas sensing signal. Based on the preset data, the air outlet 222 of the fans 2 as a whole emits uniform airflow, thereby avoiding the generation of vortices, thereby effectively reducing the noise. In another embodiment, each of the aforementioned gas sensing units 3 is a pressure sensor redesigned and replaced with a wind speed sensor, and the wind pressure data included in the preset data is redesigned and replaced with a preset wind speed data, that is, Each of the gas sensing units 3 is configured to detect a gas state corresponding to each fan 2 (such as a gas wind speed blown from an air outlet side 222 of each fan 2) to generate the aforementioned gas sensing signal, and the aforementioned gas sensing The data in the measurement signal includes the aforementioned wind speed data, and the preset data includes the preset wind speed data. In another embodiment, as shown in FIG. 6A, each of the foregoing gas sensing units 3 includes a microcontroller (MCU) 31, a pressure sensor 32, and a temperature sensor 33. The pressure sensor 32 is used for In order to detect the air pressure of the gas blown out (or out) by the air outlet side 222 of the corresponding fan 2, to generate a wind pressure sensing signal, the temperature sensor 33 is used to detect the surrounding temperature of the corresponding fan 2, To generate a temperature sensing signal, and the microcontroller 31 obtains a compensated ambient temperature value (or called) after calculating the temperature value (uncompensated temperature value) of the received temperature sensing signal and the calibration data. Is the actual ambient temperature value), and then the microcontroller 31 performs arithmetic processing on the compensated ambient temperature value and the wind pressure value of the wind pressure sensing signal to generate the aforementioned gas sensing signal and transmit it to the corresponding fan 2. In an alternative embodiment, the microcontroller 31 of the aforementioned gas sensing unit 3 may be omitted, and the processing unit 21 of the respective fan 2 may be used instead of the arithmetic processing. The data in the aforementioned gas sensing signal includes a corrected wind pressure data, and the preset data includes the preset wind pressure data. The aforementioned correction data is a correction coefficient for correcting the temperature value corresponding to the temperature sensing signal; and the manufacturer executes a test procedure to obtain the correction coefficient of each gas sensing unit 3 manufactured before leaving the factory, and the correction data is built-in A memory (e.g., random access memory (RAM), read-only memory (ROM), electronic erasable programmable read-only memory (EEPROM), flash memory, etc.) stored in each gas sensing unit 3 Memory or other memory; not shown). Therefore, the temperature-compensated gas sensing unit 3 can achieve a more accurate sensing effect. Therefore, the design of the heat dissipation system of the present invention makes it possible to improve the phenomenon of uneven outflow wind speed of the air outlets of the multiple fans 2 on the conventional cabinet, and to achieve the effect of reducing noise.

1‧‧‧ body
11‧‧‧ installation surface
111‧‧‧Mounting holes
13‧‧‧accommodation space
2‧‧‧fan
21‧‧‧processing unit
22‧‧‧Frame
221‧‧‧wind side
222‧‧‧outside
23‧‧‧ runner
24‧‧‧Fan wheels
3‧‧‧Gas sensing unit
31‧‧‧Microcontroller
32‧‧‧Pressure sensor
33‧‧‧Temperature sensor
4‧‧‧External control device

FIG. 1 is a three-dimensional schematic view of the heat dissipation system of the present invention. FIG. 1A is a schematic diagram of an embodiment of a heat dissipation system of the present invention. Figure 2 is an exploded perspective view of the heat dissipation system of the present invention. Figure 3 is a schematic front view of the heat dissipation system of the present invention. FIG. 4 is a block diagram of the first and second embodiments of the present invention. FIG. 4A is another block diagram of the third embodiment of the present invention. FIG. 5A is a schematic sectional view of a combination of a fan and a gas sensing unit according to the present invention. FIG. 5B is a schematic cross-sectional view of another combination of a fan and a gas sensing unit of the present invention. FIG. 5C is a schematic cross-sectional view of a combination of another fan and a gas sensing unit of the present invention. Fig. 6 is a block diagram of a fourth embodiment of the present invention. FIG. 6A is another block diagram of the fourth embodiment of the present invention. Figure 7 is a schematic diagram of a conventional cooling system.

1‧‧‧ body

11‧‧‧ installation surface

111‧‧‧Mounting holes

2‧‧‧fan

22‧‧‧Frame

222‧‧‧outside

3‧‧‧Gas sensing unit

Claims (19)

A heat radiation system with gas sensing includes: a body having at least one installation surface and an accommodation space; a plurality of fans provided on the corresponding installation surface and opposite to the accommodation space; a plurality of gas sensing units Is provided on the corresponding fans, each of the gas sensing units is used to detect the gas state corresponding to each fan to generate a gas sensing signal; and an external control device is connected to the fans and For the gas sensing units, the external control device compares and processes a preset data with the data in the aforementioned gas sensing signals transmitted by the gas sensing units. If the gas sensing signals of at least one of the fans are compared, The internal data is different from the preset data, so the external control device controls and adjusts the rotation speed of at least one of the fans. According to the heat dissipation system with gas sensing as described in item 1 of the scope of the patent application, wherein each fan is provided with a frame and a wheel, the frame has an air inlet side, an air outlet side, and a first-class road, the The flow channel is located between the air inlet side and the air outlet side, and the air inlet side communicates the air outlet side with the flow channel and the accommodation space, and the fan wheel is accommodated in the flow channel of the frame. The heat dissipation system with gas sensing according to item 2 of the scope of the patent application, wherein the gas sensing units are disposed on the inside of the frame at the air outlet side or the air inlet side. The heat dissipation system with gas sensing according to item 2 of the scope of patent application, wherein the gas sensing units are disposed on the inside of the frame body in the flow channel. The heat-dissipating system with gas sensing according to item 1 of the scope of patent application, wherein the external control device is accommodated in the accommodation space of the body and is located corresponding to the fans, and the external control device is a notebook type A computer or a smart mobile device or a computer. The heat dissipation system with gas sensing according to item 3 or 4 of the scope of the patent application, wherein each gas sensing unit is a wind speed sensor, and the wind speed sensor is used to detect a gas wind speed corresponding to a fan, The aforementioned gas sensing signal is generated, and the data in the aforementioned gas sensing signal includes a wind speed data, and the preset data includes a preset wind speed data. The heat dissipation system with gas sensing according to item 3 or 4 of the scope of patent application, wherein each gas sensing unit is a pressure sensor, and the pressure sensor is used to detect the gas wind pressure corresponding to the fan To generate the aforementioned gas sensing signal, and the data in the aforementioned gas sensing signal includes a wind pressure data, and the preset data includes a preset wind pressure data. The heat dissipation system with gas sensing according to item 3 or 4 of the scope of patent application, wherein each gas sensing unit includes a microcontroller, a pressure sensor and a temperature sensor, and the pressure sensing The device is used to detect the air pressure of the fan to generate a wind pressure sensing signal. The temperature sensor is used to detect the surrounding temperature of the fan to generate a temperature sensing signal. The microcontroller is based on the A temperature value of the temperature sensing signal and a correction data are calculated to obtain an ambient temperature value, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal to generate the aforementioned gas sensing signal, and The data in the aforementioned gas sensing signal includes a corrected wind pressure data, and the preset data includes a preset wind pressure data. For example, the heat-dissipation system with gas sensing as described in item 1 of the scope of patent application, wherein if the external control device has the same data as the preset data in the aforementioned gas sensing signal of the fan, the external control device Does not control the speed of these fans. For example, the heat-dissipation system with gas sensing described in item 1 of the patent application scope, wherein the installation surface has a plurality of installation holes, the installation holes penetrate the installation surface, and communicate with the accommodation space, and the fan installations In the corresponding mounting holes. A heat dissipation system with gas sensing includes: a body having at least one installation surface and an accommodation space; a plurality of fans provided on the corresponding installation surface, and opposite to the accommodation space, each of the fans is inside A processing unit is provided to control and drive the fan; a plurality of gas sensing units are provided on the corresponding fans, and each gas sensing unit is used to detect a gas state corresponding to each fan to generate a A gas sensing signal, and each gas sensing unit is connected to the processing unit opposite to each fan; and the processing unit of each fan is based on the data in the gas sensing signal transmitted by the gas sensing unit respectively Compare processing with a preset data. If each processing unit compares the data in the gas sensing signal with the preset data differently, control and adjust the rotation speed of the fan. For example, the heat-dissipation system with gas sensing according to item 11 of the scope of the patent application, wherein each fan is provided with a frame and a wheel, and the frame has an air inlet side, an air outlet side, and a first-rate road. The flow channel is located between the air inlet side and the air outlet side, and the air inlet side communicates the air outlet side with the flow channel and the accommodation space, and the fan wheel is accommodated in the flow channel of the frame. The heat dissipation system with gas sensing according to item 12 of the scope of the patent application, wherein the gas sensing units are arranged on the inside of the frame at the air outlet side or the air inlet side. The heat dissipation system with gas sensing according to item 12 of the scope of patent application, wherein the gas sensing units are disposed on the inside of the frame body in the flow channel. The heat dissipation system with gas sensing according to item 11 of the scope of the patent application, wherein the processing unit is a processor or a microcontroller. For example, the heat-dissipating system with gas sensing as described in item 11 of the scope of the patent application, wherein the installation surface has a plurality of installation holes, the installation holes penetrate the installation surface and communicate with the accommodation space, and the fan installations In the corresponding mounting holes. For example, the heat dissipation system with gas sensing described in item 13 or 14 of the scope of the patent application, wherein each gas sensing unit is a wind speed sensor, and the wind speed sensor is used to detect a gas wind speed corresponding to a fan, The aforementioned gas sensing signal is generated, and the data in the aforementioned gas sensing signal includes a wind speed data, and the preset data includes a preset wind speed data. The heat dissipation system with gas sensing according to item 13 or 14 of the scope of patent application, wherein each gas sensing unit is a pressure sensor, and the pressure sensor is used to detect the gas wind pressure corresponding to the fan To generate the aforementioned gas sensing signal, and the data in the aforementioned gas sensing signal includes a wind pressure data, and the preset data includes a preset wind pressure data. The heat dissipation system with gas sensing according to item 13 or 14 of the scope of patent application, wherein each gas sensing unit includes a microcontroller, a pressure sensor, and a temperature sensor, and the pressure sensing The device is used to detect the air pressure of the fan to generate a wind pressure sensing signal. The temperature sensor is used to detect the surrounding temperature of the fan to generate a temperature sensing signal. The microcontroller is based on the A temperature value of the temperature sensing signal and a correction data are calculated to obtain an ambient temperature value, and the ambient temperature value is further processed with a wind pressure value of the wind pressure sensing signal to generate the aforementioned gas sensing signal, and The data in the aforementioned gas sensing signal includes a corrected wind pressure data, and the preset data includes a preset wind pressure data.