Electronic nose air chamber

Abstract

The embodiment of the utility model relates to an air chamber of an electronic nose. The air chamber comprises an air chamber shell, a first heat dissipation structure and a circuit board for installing a gas detection device, the first heat dissipation structure is arranged in the detection gas chamber defined by the gas chamber shell and the circuit board, and the radiation cavity for accommodating the gas detection device is formed in the first heat dissipation structure, so that the gas detection device can be surrounded by the first heat dissipation structure in a close range; heat generated by the gas detection device can be quickly and effectively radiated to the first heat dissipation structure, and finally, the heat radiated to the first heat dissipation structure is transmitted to the gas chamber shell through the first heat dissipation structure and then is discharged to the outside of the electronic nose gas chamber, so that the heat dissipation efficiency of the whole electronic nose gas chamber is improved; and the problem that the detection performance and the service life are affected due to temperature rise of the gas detection device caused by poor heat dissipation efficiency of the electronic nose gas chamber is prevented.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of air chambers, and in particular to an electronic nose air chamber. Background Art

[0002] The electronic nose is a technology that uses artificial sensing devices to simulate the human olfactory system. Its basic principle is to detect the gas composition in a closed air chamber through a series of gas detection devices (such as semiconductor metal oxide gas sensor arrays).

[0003] Generally, the gas detection device needs to heat the gas-sensitive material inside it when it is working, so as to achieve the best working temperature (about 100℃~400℃). In the specific use process, the working temperature of the gas detection device is not only affected by the internal heating power, but also depends on the external heat dissipation efficiency of the closed gas chamber.

[0004] However, the heat dissipation effect of the current sealed gas chamber is not good, which may cause the gas detection device to work at an over-temperature, thereby causing distortion of the detection signal and reducing the life of the gas detection device. Utility Model Content

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, an embodiment of the utility model provides an electronic nose air chamber.

[0006] The utility model embodiment provides an electronic nose air chamber, including an air chamber housing, a first heat dissipation structure, and a circuit board on which a gas detection device is mounted;

[0007] The air chamber shell has an inner cavity, and is provided with an air inlet and an air outlet respectively connected to the inner cavity, and one side of the air chamber shell has an opening connected to the inner cavity; the circuit board is arranged at the opening, and a side of the circuit board close to the gas detection device is enclosed with the air chamber shell to form a detection air chamber;

[0008] The first heat dissipation structure is located in the detection gas chamber and contacts the gas chamber shell for heat exchange, and a radiation cavity for accommodating the gas detection device is provided at a position of the first heat dissipation structure corresponding to the gas detection device, so that the heat generated by the gas detection device during operation can be transferred to the first heat dissipation structure through the radiation cavity and then discharged through the gas chamber shell.

[0009] In some embodiments, the first heat dissipation structure includes a plurality of first heat dissipation fins, each of the first heat dissipation fins extends from the air inlet to the air outlet, and the plurality of first heat dissipation fins are arranged at intervals along the width direction of the air chamber housing;

[0010] The radiation cavity is formed on a portion of the first heat dissipation fins corresponding to the gas detection device among all the first heat dissipation fins.

[0011] In some embodiments, a dimension of the first heat dissipation fin in a height direction of the air chamber housing is smaller than or equal to a dimension of the air chamber housing in a height direction of the air chamber housing.

[0012] In some embodiments, the air chamber housing includes a top wall and an annular side wall arranged on one side of the top wall and circumferentially arranged around the top wall, and the opening, the air inlet and the air outlet are all arranged on the annular side wall; one end of the first heat dissipation structure is connected to the top wall and the first heat dissipation structure extends along the height direction of the air chamber housing.

[0013] In some embodiments, a connection portion connected to the circuit board is provided on a surface of the ring side wall away from the top wall.

[0014] In some embodiments, a first airflow cavity communicating with the detection air chamber is provided between an end of the first heat dissipation structure close to the air inlet and a portion of the air chamber housing provided with the air inlet;

[0015] And / or, a second airflow cavity communicating with the detection air chamber is provided between an end of the first heat dissipation structure close to the air outlet and a portion of the air chamber housing where the air outlet is provided.

[0016] In some embodiments, a second heat dissipation structure is disposed on a side of the air chamber shell facing away from the opening, and the second heat dissipation structure is in contact with the air chamber shell for heat exchange.

[0017] In some embodiments, the second heat dissipation structure includes a plurality of heat dissipation bodies, and the heat dissipation bodies are distributed in an array on the air chamber housing.

[0018] In some embodiments, a mounting portion for mounting a blowing member is provided on the second heat dissipation structure;

[0019] There are at least two mounting portions, and the at least two mounting portions are spaced apart along the circumferential direction of the air chamber housing.

[0020] In some embodiments, the outer contour of the second heat dissipation structure matches the outer contour of the air chamber housing.

[0021] Compared with the prior art, the technical solution provided by the embodiment of the utility model has the following advantages:

[0022] The embodiment of the utility model provides an electronic nose air chamber, including an air chamber housing, a first heat dissipation structure, and a circuit board on which a gas detection device is installed. By setting a first heat dissipation structure in the detection air chamber formed by the air chamber housing and the circuit board, and setting a radiation cavity for accommodating the gas detection device on the first heat dissipation structure, the gas detection device can be surrounded by the first heat dissipation structure at a close distance, and then the heat generated by the gas detection device can be quickly and effectively radiated to the first heat dissipation structure, and finally the heat radiated to the first heat dissipation structure is transferred to the air chamber housing through the first heat dissipation structure and then discharged to the outside of the electronic nose air chamber, thereby improving the heat dissipation efficiency of the entire electronic nose air chamber, and preventing the problem of poor heat dissipation efficiency of the electronic nose air chamber causing the gas detection device to heat up and affect the detection performance and service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the embodiments of the utility model, and together with the description, are used to explain the principles of the embodiments of the utility model.

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A three-dimensional schematic diagram of the electronic nose air chamber according to an embodiment of the utility model Figure 1 ;

[0026] Figure 2 A three-dimensional schematic diagram of the electronic nose air chamber according to an embodiment of the utility model Figure 2 ;

[0027] Figure 3 A bottom view of the electronic nose air chamber according to an embodiment of the utility model;

[0028] Figure 4 This is a top view of the electronic nose air chamber described in an embodiment of the utility model.

[0029] Among them, 1. air chamber shell; 11. air inlet; 12. air outlet; 13. open mouth; 14. ring side wall; 141. connecting part; 15. first air flow cavity; 16. second air flow cavity; 2. first heat dissipation structure; 21. radiation cavity; 22. first heat dissipation fins; 3. second heat dissipation structure; 31. heat sink; 32. mounting part. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the scheme of the embodiments of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the utility model, but the embodiments of the utility model can also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the utility model, rather than all of the embodiments.

[0032] Reference Figures 1 to 4 As shown, this embodiment also provides an electronic nose air chamber, including an air chamber housing 1, a first heat dissipation structure 2, and a circuit board on which a gas detection device is installed.

[0033] The air chamber housing 1 has an inner cavity, and is provided with an air inlet 11 and an air outlet 12 respectively connected to the inner cavity, and one side of the air chamber housing 1 has an opening 13 connected to the inner cavity. The circuit board is arranged at the opening 13, and the side of the circuit board close to the gas detection device is enclosed with the air chamber housing 1 to form a detection air chamber.

[0034] The first heat dissipation structure 2 is located in the detection gas chamber and is in contact with the gas chamber shell 1 for heat exchange, and a radiation cavity 21 for accommodating the gas detection device is provided at a position of the first heat dissipation structure 2 corresponding to the gas detection device, so that the heat generated by the operation of the gas detection device can be transferred to the first heat dissipation structure 2 through the radiation cavity 21 and then discharged through the gas chamber shell 1.

[0035] In specific implementation, the air chamber housing 1 can be made of a material with good thermal conductivity such as aluminum alloy. The air chamber housing 1 is provided with an air inlet 11 and an air outlet 12 connected to the inner cavity, so that the external gas to be detected can enter the inner cavity through the air inlet 11 and then be detected and analyzed by the gas detection device. The gas after detection can be discharged through the air outlet 12 to facilitate the next gas detection.

[0036] Exemplarily, the air inlet 11 and the air outlet 12 can be respectively arranged on the opposite side walls of the air chamber housing 1, so that an air flow path for gas circulation can be formed between the air inlet 11 and the air outlet 12. Exemplarily, an opening 13 can be arranged at the bottom of the air chamber housing 1, and the circuit board is located at the bottom of the air chamber housing 1 and the upper surface of the circuit board can be enclosed with the air chamber housing 1 to form a closed detection air chamber, so that the gas detection device arranged on the upper surface of the circuit board can detect and analyze the gas entering the detection air chamber.

[0037] Exemplarily, the gas detection device may be, for example, a gas sensor or a sensor array.

[0038] Furthermore, a first heat dissipation structure 2 is provided in the detection air chamber, and the first heat dissipation structure 2 is in contact with the air chamber outer shell 1 for heat exchange, and a radiation cavity 21 which can accommodate the gas detection device is provided on the first heat dissipation structure 2, so that the heat of the gas detection device can be radiated into the radiation cavity 21 and conducted to the first heat dissipation structure 2, and discharged through the air chamber outer shell 1 which is in contact with the first heat dissipation structure 2 for heat exchange, thereby achieving high heat dissipation and preventing the problem of poor heat dissipation efficiency of the electronic nose air chamber causing the gas detection device to heat up and affect the detection performance and service life.

[0039] For example, the first heat dissipation structure 2 can be made of aluminum material with good heat conduction or heat dissipation. For example, the radiation cavity 21 and the gas detection device can exchange heat directly through contact or through indirect radiation.

[0040] It should be noted that the first heat dissipation structure 2 is located in the detection air chamber, that is, the first heat dissipation structure 2 is connected to the detection air chamber, and a radiation cavity 21 is formed on the first heat dissipation structure 2, so the radiation cavity 21 is also connected to the detection air chamber, thereby not affecting the detection and analysis of the gas in the detection air chamber by the gas detection device, and the heat generated by the gas detection device is radiated to the radiation cavity 21 and then directly transferred to the air chamber housing 1 and then discharged.

[0041] The electronic nose air chamber of this embodiment includes an air chamber shell 1, a first heat dissipation structure 2, and a circuit board on which a gas detection device is installed. By setting a first heat dissipation structure 2 in the detection air chamber formed by the air chamber shell 1 and the circuit board, and setting a radiation cavity 21 for accommodating the gas detection device on the first heat dissipation structure 2, the gas detection device can be surrounded by the first heat dissipation structure 2 at a close distance, and then the heat generated by the gas detection device can be quickly and effectively radiated to the first heat dissipation structure 2, and finally the heat radiated to the first heat dissipation structure 2 is transferred to the air chamber shell 1 through the first heat dissipation structure 2 and then discharged to the outside of the electronic nose air chamber, thereby improving the heat dissipation efficiency of the entire electronic nose air chamber, and preventing the problem of poor heat dissipation efficiency of the electronic nose air chamber causing the gas detection device to heat up and affect the detection performance and service life.

[0042] Reference Figure 1 and Figure 3 As shown, in some embodiments, the first heat dissipation structure 2 includes a plurality of first heat dissipation fins 22 , each of which extends from the air inlet 11 to the air outlet 12 , and the plurality of first heat dissipation fins 22 are arranged at intervals along the width direction of the air chamber shell 1 .

[0043] Among all the first heat dissipation fins 22 , a radiation cavity 21 is formed on a portion of the first heat dissipation fins 22 corresponding to the gas detection device.

[0044] In specific implementation, the air inlet 11 and the air outlet 12 can be separately arranged along the air chamber shell 1. Figure 1 The first heat dissipation fins 22 can be arranged along the left and right directions, and all the first heat dissipation fins 22 can be arranged along the left and right directions. Figure 1 The y direction (i.e., the width direction of the air chamber housing 1) is spaced apart as shown, so that an air passage is formed between two adjacent first heat dissipation fins 22 for the gas to flow into the detection air chamber through the air inlet 11, and the air passage extends from the inlet to the air outlet 12, which can also standardize and guide the flow direction of the gas, reduce airflow dead zones, and thereby improve the smoothness of the airflow.

[0045] Exemplarily, for the plurality of first heat dissipation fins 22 , a portion of the first heat dissipation fins 22 corresponding to the gas detection device may be hollowed out, thereby forming a radiation cavity 21 in the region corresponding to the gas detection device.

[0046] For example, when there are two or more gas detection devices, there may be two or more radiation cavities 21, and the radiation cavities 21 are arranged one by one with the gas detection devices, so as to radiate and dissipate the heat generated by the corresponding gas detection devices. Figure 1 and Figure 3 As shown, four radiation cavities 21 may be provided, and the shape and size of the radiation cavity 21 may be determined according to the shape and size of the corresponding gas detection device.

[0047] Reference Figure 1 and Figure 2 As shown, in some embodiments, the size of the first heat dissipation fin 22 in the height direction of the air chamber housing 1 is less than or equal to the size of the air chamber housing 1 in the height direction of the air chamber housing 1, so as to ensure that the first heat dissipation fin 22 is in the height direction of the air chamber housing 1 (refer to Figure 1 It has a sufficient extension dimension in the z direction (as shown), so that it has a sufficient heat dissipation or heat transfer area to increase the heat dissipation efficiency.

[0048] Reference Figure 1 and Figure 2 As shown, in some embodiments, the air chamber housing 1 includes a top wall and an annular side wall 14 disposed on one side of the top wall and circumferentially surrounding the top wall, and the opening 13, the air inlet 11, and the air outlet 12 are all disposed on the annular side wall 14. One end of the first heat dissipation structure 2 is connected to the top wall and the first heat dissipation structure 2 extends along the height direction of the air chamber housing 1.

[0049] That is, the air chamber housing 1 itself may include a top wall and an annular side wall 14 arranged below the top wall, and the bottom opening of the annular side wall 14 forms an opening 13, so that it can be enclosed with the circuit board to form a closed detection chamber.

[0050] In a specific implementation, the first heat dissipation structure 2 can be located in the inner cavity of the air chamber housing 1 and the top end of the first heat dissipation structure 2 is connected to the inner surface of the top wall. The first heat dissipation structure 2 can extend downward and not protrude from the bottom end of the ring side wall 14 to ensure that it is enclosed with the circuit board to form a closed detection air chamber.

[0051] Exemplarily, the top wall and the annular side wall 14 can be integrally formed to save manufacturing steps and improve the overall structural strength of the air chamber housing 1. In addition, the top wall and the first heat dissipation structure 2 can also be integrally formed to save manufacturing steps and improve the overall structural strength of the air chamber housing 1.

[0052] Reference Figure 1 and Figure 3 As shown, in some embodiments, a connection portion 141 connected to the circuit board is provided on one side of the ring side wall 14 away from the top wall, thereby achieving a reliable connection with the circuit board.

[0053] Exemplarily, the connection portion 141 is specifically arranged on the bottom surface of the ring side wall 14. The connection portion 141 can be a connection hole. In this case, a hole can also be set at a corresponding position on the circuit board. A reliable connection between the two is achieved by inserting fasteners such as screws into the connection hole and the hole on the circuit board.

[0054] Exemplarily, the connection portion 141 may also be a snap-fitting protrusion, and a snap-fitting hole is provided at a corresponding position on the circuit board, and the snap-fitting protrusion is snap-fitted into the snap-fitting hole to achieve a reliable connection between the circuit board and the ring side wall 14 .

[0055] In addition, a plurality of connection parts 141 can be provided, and the plurality of connection parts 141 are arranged at intervals along the circumference of the ring side wall 14 , so that the circuit board can be connected through the plurality of connection parts 141 to further improve the connection stability between the two.

[0056] Reference Figure 1 As shown, in some embodiments, a first airflow cavity 15 is provided between an end of the first heat dissipation structure 2 close to the air inlet 11 and a portion of the air chamber housing 1 where the air inlet 11 is provided.

[0057] Exemplarily, when the air inlet 11 is arranged on the left side wall of the air chamber housing 1, a first airflow cavity 15 connected to the detection air chamber can be formed between the left end of the first heat dissipation structure 2 and the left side wall, that is, the left part of the first heat dissipation structure 2 can be partially hollowed out to form the first airflow cavity 15, so that the gas entering through the air inlet 11 can be mixed in the first airflow cavity 15 first and then evenly flow through the airway between each adjacent two first heat dissipation fins 22, so that each part can realize uniform gas flow to improve the flow efficiency of the airflow.

[0058] Correspondingly, a second airflow cavity 16 communicating with the detection air chamber is provided between one end of the first heat dissipation structure 2 close to the air outlet 12 and a portion of the air chamber housing 1 where the air outlet 12 is provided.

[0059] Exemplarily, when the air outlet 12 is arranged on the right side wall of the air chamber housing 1, a second airflow cavity 16 can be formed between the right end of the first heat dissipation structure 2 and the right side wall, that is, the right side portion of the second heat dissipation structure 3 can be partially hollowed out to form the second airflow cavity 16, so that the gas in the detection air chamber can first flow through the air passage between each two adjacent first heat dissipation fins 22, and then be mixed in the second airflow cavity 16 and discharged through the air outlet 12, so as to improve the flow efficiency of the airflow.

[0060] Reference Figure 2 and Figure 4 As shown, in some embodiments, a second heat dissipation structure 3 is provided on the side of the air chamber housing 1 facing away from the opening 13 , and the second heat dissipation structure 3 is in contact with the air chamber housing 1 for heat exchange.

[0061] That is, the second heat dissipation structure 3 can be arranged above the air chamber housing 1, so that the heat transferred to the air chamber housing 1 by the first heat dissipation structure 2 can be quickly dissipated by the second heat dissipation structure 3, thereby improving the heat dissipation efficiency.

[0062] Exemplarily, when the air chamber housing 1 includes a top wall and a ring side wall 14 , the second heat dissipation structure 3 can be specifically arranged on the top surface of the top wall and extended upward.

[0063] In addition, the air chamber housing 1 and the second heat dissipation structure 3 can be integrally formed to save manufacturing steps and improve the overall structural strength of the air chamber housing 1 .

[0064] Reference Figure 2 and Figure 4 As shown, in some embodiments, the second heat dissipation structure 3 includes a plurality of heat dissipation bodies 31 , and the heat dissipation bodies 31 are distributed in an array on the air chamber housing 1 .

[0065] In a specific implementation, in one example, refer to Figure 2 and Figure 4 As shown, each heat sink 31 may extend in the direction from the air inlet 11 to the air outlet 12, and a plurality of heat sinks 31 may be evenly spaced and arranged along the width direction of the air chamber housing 1. Alternatively, in other examples, each heat sink 31 may extend in a direction perpendicular to the air inlet 11 to the air outlet 12, and a plurality of heat sinks 31 may be evenly spaced and arranged along the direction from the air inlet 11 to the air outlet 12.

[0066] The specific extension direction and arrangement direction of the heat sink 31 can be set according to the airflow direction of the external environment of the electronic nose air chamber, as long as the heat transferred to the air chamber housing 1 can be quickly transferred to the external environment through the heat sink 31 to improve the heat dissipation efficiency.

[0067] For example, the heat sink 31 may be Figure 2 and Figure 4 The second heat dissipation fin shown may also be a heat dissipation column, a heat dissipation block or other structures.

[0068] In specific implementation, the air inlet 11 and the air outlet 12 can be separately arranged along the air chamber shell 1. Figure 1 The heat sink 31 itself can be extended along the left and right directions, and all the heat sinks 31 are arranged along the left and right directions. Figure 1 The y direction (ie, the width direction of the air chamber housing 1) is shown as being arranged at intervals.

[0069] Reference Figure 2 and Figure 4 As shown, in some embodiments, a mounting portion 32 for mounting a blowing member is provided on the second heat dissipation structure 3, so that the blowing member can be installed on the second heat dissipation structure 3 to accelerate the air flow through the blowing member to further improve the heat dissipation efficiency of the heat transferred to the second heat dissipation structure 3.

[0070] Exemplarily, the blowing member may be, for example, a hair dryer or a fan, and the blowing mode of the blowing member may be downward blowing or side blowing.

[0071] In addition, in order to improve the heat dissipation efficiency, at least two blowing pieces can be installed. In this case, there are at least two mounting parts 32, and at least two mounting parts 32 are arranged at intervals along the circumference of the air chamber shell 1, so that at least two blowing pieces are installed at corresponding positions of the second heat dissipation structure 3.

[0072] Exemplarily, the mounting portion 32 may be, for example, a mounting hole, and in this case the blowing member may be mounted in the mounting hole by means of a snap fit or a fastener connection.

[0073] Reference Figures 1 to 4 As shown, in some embodiments, the outer contour of the second heat dissipation structure 3 is matched with the outer contour of the air chamber housing 1, so that the outer contour of the entire electronic nose air chamber is more regular and beautiful.

[0074] Exemplarily, the outer contour shape of the electronic nose air chamber can be as follows Figure 1 The racetrack shape shown may also be a rectangle or other shapes.

[0075] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] The above description is only a specific implementation of the embodiment of the utility model, so that those skilled in the art can understand or implement the embodiment of the utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the embodiment of the utility model. Therefore, the embodiment of the utility model will not be limited to these embodiments described herein, but will conform to the widest range consistent with the principles and novel features of the embodiment of the utility model described herein.

Claims

1. An electronic nose air chamber, characterized in that: It comprises a gas chamber housing (1), a first heat dissipation structure (2) and a circuit board for mounting a gas detection device; The gas chamber housing (1) has an inner cavity, and is provided with an air inlet (11) and an air outlet (12) respectively connected to the inner cavity, and one side of the gas chamber housing (1) has an opening (13) connected to the inner cavity; the circuit board is arranged at the opening (13), and a side of the circuit board close to the gas detection device is enclosed with the gas chamber housing (1) to form a detection gas chamber; The first heat dissipation structure (2) is located in the detection gas chamber and is in contact with the gas chamber shell (1) for heat exchange. The first heat dissipation structure (2) is provided with a radiation cavity (21) for accommodating the gas detection device, so that heat generated by the gas detection device during operation can be transferred to the first heat dissipation structure (2) through the radiation cavity (21) and then discharged through the gas chamber shell (1).

2. The electronic nose chamber according to claim 1, characterized in that: The first heat dissipation structure (2) comprises a plurality of first heat dissipation fins (22), each of the first heat dissipation fins (22) extending in a direction from the air inlet (11) to the air outlet (12), and the plurality of first heat dissipation fins (22) are arranged at intervals along a width direction of the air chamber housing (1); The radiation cavity (21) is arranged on each of the first heat dissipation fins (22) corresponding to the gas detection device.

3. The electronic nose chamber according to claim 2, characterized in that: The dimension of the first heat dissipation fin (22) in the height direction of the air chamber housing (1) is smaller than or equal to the dimension of the air chamber housing (1) in the height direction of the air chamber housing (1).

4. The electronic nose chamber according to claim 1, characterized in that: The air chamber housing (1) comprises a top wall and an annular side wall (14) arranged on one side of the top wall and arranged circumferentially around the top wall, the opening (13), the air inlet (11) and the air outlet (12) are all arranged on the annular side wall (14); One end of the first heat dissipation structure (2) is connected to the top wall, and the first heat dissipation structure (2) extends along the height direction of the air chamber housing (1).

5. The electronic nose chamber according to claim 4, characterized in that: A connection portion (141) connected to the circuit board is provided on a surface of the ring side wall (14) away from the top wall.

6. The electronic nose chamber according to claim 1, characterized in that: A first airflow cavity (15) communicating with the detection air chamber is provided between an end of the first heat dissipation structure (2) close to the air inlet (11) and a portion of the air chamber housing (1) provided with the air inlet (11); And / or, a second airflow cavity (16) connected to the detection air chamber is provided between an end of the first heat dissipation structure (2) close to the air outlet (12) and a portion of the air chamber housing (1) where the air outlet (12) is provided.

7. The electronic nose chamber according to any one of claims 1 to 6, characterized in that: A second heat dissipation structure (3) is provided on the side of the air chamber outer shell (1) facing away from the opening (13), and the second heat dissipation structure (3) is in contact with the air chamber outer shell (1) for heat exchange.

8. The electronic nose chamber according to claim 7, characterized in that: The second heat dissipation structure (3) comprises a plurality of heat dissipation bodies (31), and the heat dissipation bodies (31) are distributed in an array on the air chamber housing (1).

9. The electronic nose chamber according to claim 7, characterized in that: The second heat dissipation structure (3) is provided with a mounting portion (32) for mounting a blowing member; There are at least two mounting portions (32), and the at least two mounting portions (32) are arranged at intervals along the circumference of the air chamber housing (1).

10. The electronic nose chamber according to claim 7, characterized in that: The outer contour shape of the second heat dissipation structure (3) is matched to the outer contour shape of the air chamber housing (1).

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