A detachable dual-cartridge electronic cigarette

By using magnetic adsorption and a sealed silicone design, the complex structure and condensation issues of dual-cartridge e-cigarettes are solved, achieving convenient installation and reducing condensation, thus improving the user experience.

CN224306782UActive Publication Date: 2026-06-02SHENZHEN ITSUWA ELECTRON CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHENZHEN ITSUWA ELECTRON CO LTD
Filing Date
2025-04-21
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing dual-cartridge e-cigarettes have complex structures, the cartridges are inconvenient to disassemble, and they are prone to condensation, which affects the user experience.

Method used

The design employs magnetic adsorption, allowing for quick installation and removal of the main and secondary tobacco cartridges. Sealing silicone fills the gaps to reduce condensation and improve structural convenience and sealing.

Benefits of technology

It enables simple installation and removal of e-cigarette cartridges, reduces the possibility of condensation, and improves user experience and overall performance of e-cigarettes.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a detachable dual-cartridge electronic cigarette, comprising: a main unit with a first mounting cavity and a second mounting cavity for mounting cartridges, the first mounting cavity being located above the second mounting cavity; a main cartridge mounted in the first mounting cavity, a first magnet mounted at the bottom of the first mounting cavity, and a second magnet magnetically attracted to the first magnet mounted at the bottom of the main cartridge; a secondary cartridge mounted in the second mounting cavity, the exhaust channel of the secondary cartridge communicating with the exhaust channel of the main cartridge, and an air inlet at the bottom of the main unit communicating with the exhaust channel of the secondary cartridge; a third magnet also mounted at the bottom of the main cartridge, and a fourth magnet attracted to the third magnet mounted at the top of the secondary cartridge. This utility model solves the problems of inconvenience and condensation issues in existing dual-cartridge electronic cigarette structures.
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Description

Technical Field

[0001] This utility model relates to the field of electronic cigarette technology, and in particular to a detachable dual-cartridge electronic cigarette. Background Technology

[0002] An electronic cigarette is an electronic device designed to simulate the feel and taste of a traditional cigarette, but it does not burn tobacco like a traditional cigarette. It typically consists of a heating element, a battery, and a liquid container. When the user inhales, the heating element heats the liquid, producing vapor, which the user inhales instead of smoke. With the continuous development of e-cigarette technology and the fulfillment of user needs, e-cigarettes have come in various forms, with dual-cartridge e-cigarettes gaining increasing popularity. However, existing dual-cartridge e-cigarettes suffer from complex cartridge installation structures, inconvenient cartridge removal, and some cartridges being fixed and non-removable. Furthermore, the two cartridges may not fully bond together, easily leading to condensation and negatively impacting the user experience. Utility Model Content

[0003] The main purpose of this invention is to provide a detachable dual-cartridge electronic cigarette, which aims to solve the problems of inconvenience in the use of existing dual-cartridge electronic cigarettes and the tendency to generate condensation.

[0004] To achieve the above objectives, this utility model proposes a detachable dual-cartridge electronic cigarette, comprising:

[0005] The main unit has a first mounting cavity and a second mounting cavity for installing tobacco cartridges, with the first mounting cavity located above the second mounting cavity;

[0006] The main cartridge is installed in the first mounting cavity, a first magnet is installed at the bottom of the first mounting cavity, and a second magnet that is magnetically attracted to the first magnet is installed at the bottom of the main cartridge;

[0007] A secondary tobacco cartridge is installed in the second mounting cavity. The flue of the secondary tobacco cartridge is connected to the flue of the main tobacco cartridge. An air inlet is provided at the bottom of the main unit, which is connected to the flue of the secondary tobacco cartridge. A third magnet is also installed at the bottom of the main tobacco cartridge, and a fourth magnet is installed at the top of the secondary tobacco cartridge, which is attracted to the third magnet.

[0008] Optionally, the bottom of the first mounting cavity is provided with a first sealing silicone that fits against the bottom surface of the main cartridge.

[0009] Optionally, the top of the secondary cartridge is fitted with a second sealing silicone that adheres to the bottom surface of the primary cartridge.

[0010] Optionally, the main unit includes a main housing, in which a microphone, a power supply battery, and a control circuit board are installed, and the microphone and the power supply battery are electrically connected to the control circuit board.

[0011] Optionally, one end of the microphone is connected to the outside of the main unit, and the other end of the microphone is connected to the air inlet.

[0012] Optionally, a first spring pin is provided at the bottom of the first mounting cavity, the first spring pin is electrically connected to the control circuit board, and a main cigarette cartridge is provided with a main cigarette cartridge heating wire, the main cigarette cartridge heating wire extends to the bottom of the main cigarette cartridge for contact with the first spring pin;

[0013] The bottom of the second mounting cavity is provided with a second spring pin, which is electrically connected to the control circuit board. The secondary tobacco cartridge is provided with a secondary tobacco cartridge heating wire, which extends to the bottom of the secondary tobacco cartridge for contact with the second spring pin.

[0014] Optionally, the main cartridge is provided with a main cartridge oil tank for storing e-liquid, and a main cartridge lower silicone is installed at the bottom of the main cartridge oil tank;

[0015] The secondary cartridge is equipped with a secondary cartridge oil tank for storing e-liquid, and a secondary cartridge lower silicone is installed at the bottom of the secondary cartridge oil tank.

[0016] Optionally, a liquid-absorbing cotton for the main tobacco cartridge is provided below the silicone under the main tobacco cartridge, and a liquid-absorbing cotton for the secondary tobacco cartridge is provided below the silicone under the secondary tobacco cartridge.

[0017] Optionally, a motor is also installed inside the host, and the motor is electrically connected to the control circuit board.

[0018] Optionally, the side of the main unit is also equipped with a main cartridge voltage adjustment button for controlling the voltage of the main cartridge and a secondary cartridge voltage adjustment button for controlling the voltage of the secondary cartridge. Both the main cartridge voltage adjustment button and the secondary cartridge voltage adjustment button are connected to the control circuit board.

[0019] An air intake port is equipped with an air regulating switch for controlling airflow.

[0020] The beneficial effects of this utility model are as follows: it improves the structure of existing dual-cartridge electronic cigarettes. The main cartridge and the auxiliary cartridge are tightly installed in the mounting cavity of the main unit by the magnetic attraction of magnets. It is simple to operate, easy to install and disassemble, and the two cartridges can be fully combined, effectively reducing the gap between the cartridges, reducing the possibility of condensation, and avoiding the problem of condensation affecting the user experience. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the electronic cigarette of this utility model;

[0023] Figure 2 This is a cross-sectional view of the overall structure of the electronic cigarette of this utility model;

[0024] Figure 3 This is a cross-sectional view of the main unit structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the main smoke cartridge structure of this utility model;

[0026] Figure 5 This is a cross-sectional view of the main smoke cartridge structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the secondary smoke cartridge structure of this utility model;

[0028] Figure 7 This is a cross-sectional view of the secondary smoke cartridge structure of this utility model;

[0029] Label Explanation:

[0030] 1. Main unit; 11. First mounting cavity; 12. Second mounting cavity; 13. First magnet; 14. First sealing silicone; 15. Main housing; 16. Power supply battery; 17. Control circuit board; 18. First spring pin; 19. Second spring pin; 110. Motor; 111. Main cartridge pressure adjustment button; 112. Secondary cartridge pressure adjustment button; 113. Gas adjustment switch;

[0031] 2. Main cartridge; 21. Second magnet; 22. Third magnet; 23. Main cartridge heating wire; 24. Main cartridge oil reservoir; 25. Main cartridge lower silicone; 26. Main cartridge absorbent cotton;

[0032] 3. Secondary cartridge; 31. Fourth magnet; 32. Secondary sealing silicone; 33. Heating wire of secondary cartridge; 34. Oil tank of secondary cartridge; 35. Lower silicone of secondary cartridge; 36. Liquid absorbent cotton of secondary cartridge.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] One embodiment of this utility model proposes a detachable dual-cartridge electronic cigarette, see reference. Figure 1 and Figure 3 ,include:

[0038] The main unit 1 has a first mounting cavity 11 and a second mounting cavity 12 for mounting the tobacco cartridge, with the first mounting cavity 11 located above the second mounting cavity 12.

[0039] The main cartridge 2 is installed in the first mounting cavity 11. A first magnet 13 is installed at the bottom of the first mounting cavity 11, and a second magnet 21 that is magnetically attracted to the first magnet 13 is installed at the bottom of the main cartridge 2.

[0040] The secondary tobacco cartridge 3 is installed in the second mounting cavity 12. The flue of the secondary tobacco cartridge 3 is connected to the flue of the main tobacco cartridge 2. The bottom of the main unit 1 has an air inlet that is connected to the flue of the secondary tobacco cartridge 3. The bottom of the main tobacco cartridge 2 is also equipped with a third magnet 22, and the top of the secondary tobacco cartridge 3 is equipped with a fourth magnet 31 that is attracted to the third magnet 22.

[0041] In this embodiment, the structure of existing dual-cartridge electronic cigarettes is improved. A first magnet 13 is installed at the bottom of the first mounting cavity 11, and a second magnet 21, magnetically attracted to the main cartridge 2, is installed at the bottom of the main cartridge 2. This magnetic attraction enables quick installation and removal of the main cartridge 2 from the first mounting cavity 11. Simultaneously, a third magnet 22 is installed at the bottom of the main cartridge 2, and a fourth magnet 31, attracted to the top of the auxiliary cartridge 3, facilitates the combination and separation of the auxiliary cartridge 3 and the main cartridge 2. This magnetic design simplifies the cartridge installation structure, solving the problems of complex installation and inconvenient disassembly in existing dual-cartridge electronic cigarettes, thus improving user convenience. Furthermore, in this embodiment, the main unit 1 can contain only the main cartridge 2, or it can contain both the main cartridge 2 and the auxiliary cartridge 3 (with e-liquid), or it can contain both the main cartridge 2 and the auxiliary cartridge 3 (disposable). Both cartridges can work simultaneously, or only the main cartridge 2 can work alone, meeting different user needs. The main cartridge 2 and the auxiliary cartridge 3 can be refilled multiple times, and the auxiliary cartridge 3 can also be a disposable cartridge.

[0042] Furthermore, the smoke channel of the secondary cartridge 3 is connected to the smoke channel of the main cartridge 2, and the main cartridge 2 and the secondary cartridge 3 are attracted to each other by magnets, so that the two cartridges can be fully combined, effectively reducing the gap between the cartridges, reducing the possibility of condensation, avoiding the problem of condensation affecting the user experience, and improving the overall performance and user experience of the e-cigarette.

[0043] Furthermore, placing the first mounting cavity 11 above the second mounting cavity 12 is beneficial to the overall layout of the electronic cigarette structure. At the same time, an air inlet is opened at the bottom of the main unit 1 to communicate with the flue of the auxiliary cartridge 3, ensuring the smooth air intake and vapor generation of the electronic cigarette, enabling the electronic cigarette to work normally and providing users with a stable and good smoking experience.

[0044] Further, refer to Figures 4 to 7 The bottom of the first mounting cavity 11 is provided with a first sealing silicone 14 that fits against the bottom surface of the main cartridge 2. This first sealing silicone 14 effectively fills the tiny gaps between the main cartridge 2 and the bottom of the first mounting cavity 11, enhancing the seal between them. This prevents steam or external air from leaking from the connection between the main cartridge 2 and the first mounting cavity 11 during use, ensuring the airtightness of the e-cigarette and allowing steam to flow along the pre-set duct, thus improving the e-cigarette's efficiency and stability. Good sealing also prevents cold external air from entering the space between the main cartridge 2 and the first mounting cavity 11, reducing the possibility of condensation due to hot and cold air exchange. Reducing condensation not only helps maintain the cleanliness of the e-cigarette's interior but also prevents condensate from affecting the normal operation of the main cartridge 2, improving the user experience.

[0045] Furthermore, a second sealing silicone 32, which adheres to the bottom surface of the main cartridge 2, is installed on the top of the secondary cartridge 3. The second sealing silicone 32, installed on the top of the secondary cartridge 3 and adhering to the bottom surface of the main cartridge 2, tightly fills the gap at the connection between the main and secondary cartridges 3, forming a reliable sealing barrier. This effectively prevents steam leakage from the cartridge connection, ensuring that the steam flows entirely along the preset vapor path and improving the steam output efficiency of the electronic cigarette. Simultaneously, the sealing structure also prevents external cold air from entering the cartridge, reducing condensation caused by the mixing of hot and cold air.

[0046] Further, the main unit 1 includes a main housing 15, within which a microphone, a power supply battery 16, and a control circuit board 17 are installed. The microphone and the power supply battery 16 are both electrically connected to the control circuit board 17. In this embodiment, reference is made to... Figure 2 The control circuit board 17 is installed at the bottom of the second mounting cavity 12. The power supply battery 16 is used to power the entire electronic cigarette, ensuring its normal operation. The battery is installed along the length of the electronic cigarette on one side of the first mounting cavity 11 and the second mounting cavity 12, optimizing the structural layout, reducing the space occupied by the battery, and maximizing the battery capacity to ensure the electronic cigarette's battery life. The control circuit board 17 is located at the bottom of the overall interface of the electronic cigarette, away from heat-generating components such as the cartridge and battery, which can reduce the impact of heat on the control circuit board 17 and improve its service life. The microphone is the airflow sensing switch of the electronic cigarette, which can sensitively detect changes in airflow when the user inhales and transmit the signal to the control circuit board 17. Specifically, in this embodiment, the microphone is integrated on the control circuit board 17, and one end of the microphone is connected to the outside of the main unit 1, while the other end of the microphone is connected to the air inlet. When the user inhales, the airflow first passes through the microphone, thereby activating the electronic cigarette. Then, the control circuit board 17 controls the cartridge to activate, providing the user with electronic vapor.

[0047] Furthermore, the bottom of the first mounting cavity 11 is provided with a first spring pin 18, which is electrically connected to the control circuit board 17. The main tobacco cartridge 2 is provided with a main tobacco cartridge heating wire 23, which extends to the bottom of the main tobacco cartridge 2 for docking with the first spring pin 18.

[0048] The second mounting cavity 12 has a second spring pin 19 at the bottom, which is electrically connected to the control circuit board 17. The auxiliary tobacco cartridge 3 has an auxiliary tobacco cartridge heating wire 33, which extends to the bottom of the auxiliary tobacco cartridge 3 to dock with the second spring pin 19.

[0049] In this embodiment, the spring pin is electrically connected to the control circuit board 17. Once the cartridge is installed, the heating wire can immediately establish a stable electrical connection with the control circuit board 17, providing power to the heating wire and achieving rapid power supply. Compared with traditional wire connection methods, the spring pin connection has higher reliability and lower contact resistance, effectively reducing energy loss and improving power transmission efficiency.

[0050] Furthermore, the main cartridge 2 is provided with a main cartridge oil tank 24 for storing e-liquid, and a main cartridge lower silicone 25 is installed at the bottom of the main cartridge oil tank 24;

[0051] The secondary cartridge 3 is provided with a secondary cartridge oil tank 34 for storing e-liquid, and a secondary cartridge lower silicone 35 is installed at the bottom of the secondary cartridge oil tank 34.

[0052] In this embodiment, a primary cartridge oil tank 24 has a primary cartridge lower silicone 25 installed at its bottom, and a secondary cartridge oil tank 34 has a secondary cartridge lower silicone 35 installed at its bottom. The silicone material has excellent sealing properties, effectively preventing e-liquid leakage from the bottom of the tank. Whether the e-cigarette is stationary or subjected to vibration or tilting during use, it ensures stable e-liquid storage within the tank, providing a continuous and stable supply to the user and preventing device damage or inconvenience due to e-liquid leakage. Simultaneously, the silicone prevents external dust and impurities from entering the oil tank, maintaining the purity of the e-liquid and preventing impurities from affecting its taste and quality.

[0053] Furthermore, a main tobacco cartridge absorbent cotton 26 is provided below the main tobacco cartridge lower silicone 25, and a secondary tobacco cartridge absorbent cotton 36 is provided below the secondary tobacco cartridge lower silicone 35.

[0054] In this embodiment, a main cartridge absorbent cotton 26 is disposed below the silicone 25 under the main cartridge, and a secondary cartridge absorbent cotton 36 is disposed below the silicone 35 under the secondary cartridge. When e-liquid leaks, the absorbent cotton can quickly absorb the leaked e-liquid, preventing it from spreading further to other areas inside the e-cigarette and avoiding damage to the electronic components, such as corroding the circuit board or damaging the battery, thus ensuring the normal operation of the e-cigarette. The silicone 25 under the cartridge and the absorbent cotton form a double seal, greatly reducing the impact of e-liquid leakage on the performance and safety of the e-cigarette, and providing a more reliable guarantee for e-liquid storage.

[0055] Furthermore, a motor 110 is also installed inside the main unit 1, and the motor 110 is electrically connected to the control circuit board 17. In this embodiment, the motor 110 is used to prompt the user whether the tobacco cartridge is inserted correctly. When the tobacco cartridge is inserted correctly, the tobacco cartridge and the cartridge pin are electrically connected. At this time, the control circuit board 17 receives the signal that the tobacco cartridge is inserted correctly and controls the motor 110 to start. The motor 110 prompts the user that the tobacco cartridge is inserted correctly by vibration.

[0056] Furthermore, the main unit 1 is also equipped with a main cartridge voltage adjustment button 111 for controlling the voltage of the main cartridge 2 and a secondary cartridge voltage adjustment button 112 for controlling the voltage of the secondary cartridge 3. Both the main cartridge voltage adjustment button 111 and the secondary cartridge voltage adjustment button 112 are connected to the control circuit board 17. Furthermore, the control circuit board 17 can not only control the power adjustment, on / off, nicotine adjustment, and sweetness / ice level adjustment of the main and secondary cartridges, but also control the delay adjustment of the secondary cartridge in addition to the above adjustments.

[0057] An air inlet is equipped with an air regulating switch 113 for controlling airflow.

[0058] In this embodiment, users can adjust the voltage of the main and secondary tobacco cartridges according to their preferences. Different voltages adjust the working power of the main and secondary tobacco cartridges, thereby affecting the atomization effect of the e-liquid and the flavor of the vapor. For example, higher power can make the e-liquid atomize more fully, producing richer vapor and a stronger throat hit; lower power can make the vapor smoother and the flavor more delicate. Users can freely switch the voltage of the main and secondary tobacco cartridges according to different scenarios and moods to obtain a personalized smoking experience.

[0059] The airflow control switch 113 installed inside the air intake further controls the airflow into the e-cigarette. The airflow directly affects the atomization effect of the e-liquid and the amount of vapor produced. By adjusting the airflow control switch 113, users can precisely control the airflow according to their smoking habits and needs, thereby obtaining the ideal vapor flavor and vapor volume. For example, when a rich vapor is needed, the airflow can be increased; when a smooth flavor is desired, the airflow can be decreased.

[0060] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A detachable dual-cartridge electronic cigarette, characterized in that, include: The main unit has a first mounting cavity and a second mounting cavity for installing tobacco cartridges, with the first mounting cavity located above the second mounting cavity; The main cartridge is installed in the first mounting cavity, a first magnet is installed at the bottom of the first mounting cavity, and a second magnet that is magnetically attracted to the first magnet is installed at the bottom of the main cartridge; A secondary tobacco cartridge is installed in the second mounting cavity. The flue of the secondary tobacco cartridge is connected to the flue of the main tobacco cartridge. An air inlet is provided at the bottom of the main unit, which is connected to the flue of the secondary tobacco cartridge. A third magnet is also installed at the bottom of the main tobacco cartridge, and a fourth magnet is installed at the top of the secondary tobacco cartridge, which is attracted to the third magnet.

2. The detachable dual-cartridge electronic cigarette according to claim 1, characterized in that, The bottom of the first mounting cavity is provided with a first sealing silicone that fits against the bottom surface of the main cartridge.

3. The detachable dual-cartridge electronic cigarette according to claim 1, characterized in that, The top of the secondary cartridge is fitted with a second sealing silicone that adheres to the bottom surface of the primary cartridge.

4. The detachable dual-cartridge electronic cigarette according to claim 1, characterized in that, The main unit includes a main housing, in which a microphone, a power supply battery, and a control circuit board are installed. The microphone and the power supply battery are both electrically connected to the control circuit board.

5. The detachable dual-cartridge electronic cigarette according to claim 4, characterized in that, One end of the microphone is connected to the outside of the main unit, and the other end of the microphone is connected to the air inlet.

6. The detachable dual-cartridge electronic cigarette according to claim 4, characterized in that, The bottom of the first mounting cavity is provided with a first spring pin, which is electrically connected to the control circuit board. The main tobacco cartridge is provided with a main tobacco cartridge heating wire, which extends to the bottom of the main tobacco cartridge for contact with the first spring pin. The bottom of the second mounting cavity is provided with a second spring pin, which is electrically connected to the control circuit board. The secondary tobacco cartridge is provided with a secondary tobacco cartridge heating wire, which extends to the bottom of the secondary tobacco cartridge for contact with the second spring pin.

7. The detachable dual-cartridge electronic cigarette according to claim 1, characterized in that, The main cartridge is equipped with a main cartridge oil tank for storing e-liquid, and a main cartridge lower silicone is installed at the bottom of the main cartridge oil tank; The secondary cartridge is equipped with a secondary cartridge oil tank for storing e-liquid, and a secondary cartridge lower silicone is installed at the bottom of the secondary cartridge oil tank.

8. The detachable dual-cartridge electronic cigarette according to claim 7, characterized in that, The main cartridge has absorbent cotton underneath the silicone, and the secondary cartridge has absorbent cotton underneath the silicone.

9. The detachable dual-cartridge electronic cigarette according to claim 4, characterized in that, The host computer also has a motor installed inside, and the motor is electrically connected to the control circuit board.

10. The detachable dual-cartridge electronic cigarette according to claim 4, characterized in that, The main unit is also equipped with a main cartridge voltage regulator button for controlling the voltage of the main cartridge and a secondary cartridge voltage regulator button for controlling the voltage of the secondary cartridge. Both the main cartridge voltage regulator button and the secondary cartridge voltage regulator button are connected to the control circuit board. An air intake port is equipped with an air regulating switch for controlling airflow.