Ion generation device and electric appliance

Abstract

The utility model provides an ion generating device and electric appliance, the ion generating device comprises a shell, a circuit board and a plurality of brush electrodes, the shell comprises a first shell and a second shell, the first shell and the second shell are connected to form an inner cavity, the circuit board and the brush electrodes are arranged in the inner cavity, and the brush electrodes are arranged in the inner cavity. A groove is formed in the first shell, protection frames are arranged on the two opposite sides of the groove, the protection frames and the first shell are integrally formed or the protection frames are connected to the first shell, one ends of the brush electrodes are electrically connected with the circuit board, and the other ends of the brush electrodes are electrically connected with the circuit board. One end of each brush electrode is provided with a groove, the other end of each brush electrode extends to the outside of the first shell along the groove, the height of the protection frame is larger than that of each brush electrode by taking the groove as a reference, the electric appliance comprises the ion generation device, and the ion generation device can protect a user from being punctured while ion release is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of integrated circuits, and in particular relates to an ion generating device and an electrical appliance. Background Art

[0002] A conventional ion generating device includes a circuit board, a plurality of sensing electrodes, and needle electrodes having the same number as the sensing electrodes. Each sensing electrode is formed into a ring shape and is arranged on the surface of a substrate. The base end of each needle electrode is arranged on the substrate, and the front end thereof is arranged at the center of the corresponding sensing electrode. When a positive high voltage is applied between one set of needle electrodes and the sensing electrodes, a corona discharge is generated at the front end of the needle electrode to generate positive ions. When a negative high voltage is applied between another set of needle electrodes and the sensing electrodes, a corona discharge is generated at the front end of the needle electrode to produce negative ions.

[0003] Ion generating devices are mainly used in air purifiers. The positive and negative ions generated are sent into the room through the blower inside the air purifier, where they react chemically with mold and viruses in the air to purify the air.

[0004] However, if a baffle is not set to cover the front end of the needle electrode, the operator may be easily stabbed by the front end of the needle electrode during the installation of the ion generating device on the air purifier; and if a baffle is set to cover the front end of the needle electrode, the release of the generated positive and negative ions will be affected.

[0005] Therefore, it is urgent to design an ion generating device that can protect the operator from being stabbed and does not affect the release of ions. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides an ion generating device and an electrical appliance, which can protect users from being stabbed without affecting the release of ions.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] An ion generating device comprises a shell, a circuit board and a plurality of brush electrodes, the shell comprises a first shell and a second shell, the first shell is connected with the second shell to form an inner cavity, the circuit board and the brush electrode are arranged in the inner cavity, a groove is provided on the first shell, and protective frames are provided on opposite sides of the groove, the protective frame is integrally formed with the first shell or the protective frame is connected to the first shell, one end of the plurality of brush electrodes is electrically connected to the circuit board, and the other end of the plurality of brush electrodes extends to the outside of the first shell along the groove, and the height of the protective frame is greater than the height of the brush electrode based on the groove, and a through hole is provided in the middle of the protective frame. A through hole is passed through, a first groove is provided on the outer edge of the first shell, a first protruding structure is provided on the side of the first groove close to the inner cavity, a second groove is provided on the outer edge of the second shell, the second protruding structure is provided on the side close to the inner cavity, the first groove is adapted to the second protruding structure, the second groove is adapted to the first protruding structure, the circuit board includes a first circuit board and a second circuit board, the second shell is provided with a plurality of limiting columns, the first circuit board is provided with a limiting hole matched with the limiting column, the inner side wall of the second shell is provided with a third protruding structure, and the second circuit board is provided with a third groove adapted to the first protruding structure.

[0009] As a further improvement of the above solution, the brush electrode is replaced by a needle electrode.

[0010] As a further improvement of the above solution, a plurality of terminals are provided on the circuit board, and the plurality of terminals extend to the outside of the shell for connecting to external devices.

[0011] As a further improvement of the above solution, it also includes a timing circuit, the timing circuit includes a timing chip, and the timing chip is electrically connected to the terminal.

[0012] As a further improvement of the above solution, a closing opening is provided on the shell, and a cover plate is provided at the closing opening.

[0013] As a further improvement of the above solution, the protection frame is provided with at least one support column, and the support column is provided with a straight-line structure.

[0014] The utility model also provides an electrical appliance, comprising the ion generating device as described above, wherein a bayonet is provided on a housing of the ion generating device, and a fixing structure cooperating with the bayonet is provided on the electrical appliance.

[0015] The beneficial effects of the present invention are:

[0016] The utility model provides an ion generating device and an electrical appliance, which can prevent users from being stabbed by arranging a protection frame at the end of the brush electrode, and the protection frame is only arranged on two opposite sides of the slot, without covering the end of the brush electrode, and will not affect the release of ions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a first embodiment of an ion generating device of the utility model;

[0018] Figure 2 It is an exploded view of a first embodiment of an ion generating device of the utility model;

[0019] Figure 3 It is a circuit diagram of an ion generating device of the utility model;

[0020] Figure 4 It is a schematic diagram of a second embodiment of an ion generating device of the utility model;

[0021] Figure 5 is a schematic diagram of a third embodiment of an ion generating device of the utility model;

[0022] Figure 6 is a schematic diagram of a fourth embodiment of an ion generating device of the utility model;

[0023] Figure 7 is a schematic diagram of a fifth embodiment of an ion generating device of the utility model;

[0024] Figure 8 It is an exploded view of a fifth embodiment of an ion generating device of the utility model;

[0025] Fig. 9 is a schematic diagram of a sixth embodiment of an ion generating device of the utility model;

[0026] Description of reference numerals:

[0027] 1. Shell; 10. First shell; 101. First groove; 102. First protruding structure; 103. Slot; 104. Protection frame; 1041. Through hole; 105. Support column; 11. Second shell; 110. Limit column; 111. Limit hole; 112. Second protruding structure; 113. Third protruding structure; 114. Mounting groove; 12. Circuit board; 120. First circuit board; 121. Second circuit board; 122. Terminal; 13. Transformer; 14. Brush electrode; 140. First brush electrode; 141. Second brush electrode; 150. First sensing electrode; 151. Second sensing electrode; 16. Needle electrode; 17. Closing port; 170. Cover plate; 171. Vent port; 18. Bayonet. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0029] The utility model provides an ion generating device and an electrical appliance, which can prevent users from being stabbed by arranging a protection frame at the end of the brush electrode, and the protection frame is only arranged on two opposite sides of the slot, without covering the end of the brush electrode, and will not affect the release of ions.

[0030] Embodiment 1

[0031] Reference Figure 1 to Figure 2 The present embodiment provides an ion generating device, including a housing 1, a circuit board 12, and a plurality of brush electrodes 14. The plurality of brush electrodes 14 include a first brush electrode 140 and a second brush electrode 141, the first brush electrode 140 and the second brush electrode 141 are spaced apart, and the plurality of first brush electrodes 140 and the plurality of second brush electrodes 141 are arranged in a straight line, the first brush electrode 140 is used to generate positive ions, and the second brush electrode 141 is used to generate negative ions.

[0032] The ion generating device further includes a sensing electrode, which includes an integrally formed first sensing electrode 150 and a second sensing electrode 151 . The first sensing electrode 150 is disposed around the first brush electrode 140 to form an electric field with the first brush electrode 140 ; ​​the second sensing electrode 151 is disposed around the second brush electrode 141 to form an electric field with the second brush electrode 141 .

[0033] Specifically, the shell 1 includes a first shell 10 and a second shell 11, the first shell 10 and the second shell 11 are connected to form an inner cavity, and the circuit board 12 is arranged in the inner cavity. Specifically, the outer edge of the first shell 10 is provided with a first groove 101, and the first groove 101 is provided with a first protruding structure 102 on the side close to the inner cavity, and the outer edge of the second shell 11 is provided with a second protruding structure 112, and the second protruding structure 112 is provided with a second groove 1120 on the side close to the inner cavity, the first groove 101 is adapted to the second protruding structure 112, and the second groove is adapted to the first protruding structure 102, so as to realize the fixed connection between the first shell 10 and the second shell 11.

[0034] Furthermore, a slot 103 is provided on the first shell 10 , and protection frames 104 are provided on two opposite sides of the slot 103 . In the present embodiment, the protection frame 104 is integrally formed with the first shell 10 .

[0035] The circuit board 12 includes a first circuit board 120 and a second circuit board 121, and the first circuit board 120 and the second circuit board 121 are connected through a transformer 13, and the transformer 13 referred to here includes a step-up transformer and a high-voltage transformer. The second circuit board 121 is provided with a plurality of terminals 122, and the plurality of terminals 122 extend to the outside of the housing 1, and are used to connect to an external power supply device to provide a DC power supply to the circuit board.

[0036] In this embodiment, the second housing is provided with a plurality of limiting holes 111, and the first circuit board 120 is provided with limiting posts 110 that cooperate with the limiting holes 111. By the cooperation between the limiting posts 110 and the limiting holes 111, the first circuit board 120 is fixed in the inner cavity.

[0037] Furthermore, the inner wall of the second shell is provided with a third protruding structure 113, and the second circuit board 121 is provided with a third groove (not shown in the figure) adapted to the first protruding structure 102, and the second circuit board 121 is fixed in the inner cavity through the cooperation between the third protruding structure 113 and the third groove.

[0038] Furthermore, a plurality of mounting grooves 114 are provided on the second shell, and the transformer 13 is fixed in the inner cavity through the mounting grooves 114 .

[0039] One end of the plurality of brush electrodes is connected to the first circuit board 120 , and the other end of the plurality of brush electrodes extends along the slot 103 to the outside of the first shell. With the slot 103 as a reference, the height of the protection frame 104 is greater than the height of the brush electrodes.

[0040] It can be understood that the protective frame 104 is arranged on both sides of the groove 103, that is, the protective frame 104 is arranged on both sides of the brush electrode. When the user takes the ion generating device provided by the utility model, the fingers first touch the protective frame, and the ion generating device provided by the utility model is very small in size, so that the distance between the protective frames on both sides of the groove is very small, and it is difficult for the fingers to extend between the two protective frames, and the brush electrode cannot be touched. It can be seen that the protective frame 104 plays a protective role, making it difficult for the user to directly contact the brush electrode.

[0041] Even if the user's finger accidentally touches the brush electrode along the gap between the protection frames 104 , the brush electrode has a soft characteristic and will not cause discomfort or tingling to the user.

[0042] Furthermore, a through hole 1041 is provided in the middle of the protective frame 104. Combined with the above description, the protective frame 104 is arranged on opposite sides of the slot 103, so that ions can be released to the outside of the device along the gap between the protective frames on both sides, and can also be released to the outside of the device along the through hole 1041 on the protective frame, and the release channel of the ions will not be affected by the protective frame 104.

[0043] Furthermore, the protection frame 104 is provided with at least one support column 105, and the support column 105 is set to a straight-line structure. Specifically, the support column 105 is perpendicular to the horizontal plane where the slot 103 is located. The support column 105 can enhance the stability of the protection frame 104, prevent the protection frame 104 from deformation, and facilitate transportation and handling.

[0044] Figure 3 The utility model is a circuit diagram of an ion generating device, which includes a terminal, a first oscillation circuit, a boost circuit, a second oscillation circuit and a rectifier circuit.

[0045] Specifically, the terminal 122 includes 7 functional pins, and pin 3 of the terminal 122 is used as a power terminal 122, connected to the positive pole of the DC power supply, to provide a DC voltage of 12V for the circuit. Pin 2 of the terminal 122 is used as a ground terminal 122, and the ground terminal 122 is grounded.

[0046] The first oscillation circuit includes a diode D2, a resistor R1 and a resistor R2, wherein the diode D2, the resistor R1 and the resistor R2 are connected in series between the power supply terminal 122 and the base of the transistor Q1, and the first oscillation circuit can form a self-excited oscillation to generate a boost loop. The emitter of the transistor Q1 is connected to the ground terminal 122, and the diode D3 is connected between the ground terminal 122 and the base of the transistor Q1.

[0047] The boost circuit includes a boost transformer and a high-voltage transformer. Specifically, the boost transformer includes a primary coil 1A, a base coil 2B and a secondary coil 3C. One connection end of the primary coil 1A is connected to the node of the resistor R2 and the resistor R3, and the other connection end of the primary coil 1A is connected to the collector of the transistor Q1. One connection end of the base coil 2B is connected to the base of the transistor Q1 through the resistor R4, and the other connection end of the base coil 2B is connected to the ground terminal 122. One connection end of the secondary coil 3C is connected to the base of the transistor Q1, and the other connection end of the secondary coil 3C is connected to the ground terminal 122 through the diode D4 and the capacitor C1.

[0048] The high voltage transformer includes a primary coil 4D and a secondary coil 5E. The diode D5 is connected between the cathode of the diode D4 and one connection end of the primary coil 4D. The other connection end of the primary coil 4D is connected to the ground terminal 122.

[0049] The second oscillation circuit includes a capacitor C1 and a diode D6. The diode D6 is connected in parallel with the capacitor C1. One end of the capacitor C1 is connected to the node between the diode D4 and the diode D5. The other end of the capacitor C1 is connected to the node between the primary coil 4D and the ground terminal 122.

[0050] One connection end of the secondary coil 5E is connected to the induction electrode 15, and the other connection end of the secondary coil 5E is connected to the cathode of the diode D7 and the anode of the diode D8, the cathode of the diode D8 is connected to the base of the brush electrode, and the anode of the diode D7 is connected to the base of the brush electrode. The diode D7 and the diode D8 form a rectifier circuit, which can rectify the high voltage output by the high-voltage transformer 13 to generate positive and negative DC high voltage.

[0051] When a DC power supply voltage is applied to the circuit through the power terminal 122 and the ground terminal 124 , corona discharge is generated at the front ends of the first brush electrode 140 and the second brush electrode 141 , generating positive ions and negative ions, respectively.

[0052] Different from conventional circuits, this circuit diagram further includes a timing circuit, which includes a timing chip IC1 , the model of which is R1EX24002A, and the timing chip IC1 is electrically connected to the terminal 122 .

[0053] Specifically, pins 1 to 4 of the timing chip IC1 are connected to pin 4 of the terminal 122, and pin 4 of the terminal 122 is grounded as a ground terminal 122. Pin 8 of the timing chip IC1 is connected to the node of resistor R53 and resistor R54, and the other end of the resistor R53 is connected to the node of pin 1 and pin 7 of the terminal 122. Pin 1 and pin 7 of the terminal 122 are both used as power supply terminals 122, connected to a DC power supply. The timing circuit also includes a capacitor C51 and a capacitor C52, one end of the capacitor C51 and the capacitor C52 connected in parallel is connected to pin 8 of the timing chip IC1, and the other end is connected to pin 4 of the terminal 122, and pin 4 of the terminal 122 is grounded as a ground terminal. Pin 5 of the timing chip IC1 is connected to pin 6 of the terminal 122 through a resistor R52, and pin 6 of the terminal 122 is used as a clock pin to connect the timing chip IC1 and the MCU of the host; used to send clock signals in both directions. Pin 6 of the timing chip is connected to pin 5 of terminal 122 through resistor R53. Pin 5 of terminal 122 is used as a data transmission pin to connect the timing chip IC1 and the host MCU for bidirectional data transmission.

[0054] By setting up a timing circuit to record the working time in real time, when the timing reaches 2 years, a communication is sent to the host MCU to prompt that the ion generating device needs to be replaced.

[0055] The utility model also provides an electrical appliance, including the ion generating device as described above, wherein a bayonet (not shown) is provided on the housing 1 of the ion generating device, and a fixing structure cooperating with the bayonet is provided on the electrical appliance, and the ion generating device is fixed inside the electrical appliance through the cooperation between the bayonet and the fixing structure.

[0056] The electrical appliance may be an ion blower, an ion air purifier or the like. The ion generating device may generate charged oxygen negative ions (O 2- ) or other types of ions that can react with harmful substances in the air (such as bacteria, viruses, dust, etc.). These reactions help to degrade harmful substances into more harmless compounds or adsorb them onto the purifier filter, thereby purifying the air.

[0057] Embodiment 2

[0058] Reference Figure 4 The difference between this embodiment and the first embodiment is that the brush electrode is replaced by a needle electrode 16. The tip of the needle electrode 16 can be set to be conical or extremely fine.

[0059] The needle electrode 16 can generate a higher electric field strength at a lower voltage due to its sharp tip structure. This high electric field strength is conducive to the ionization of air molecules or atoms, thereby effectively generating ions. In contrast, electrodes of other shapes may require a higher voltage to achieve the same ionization effect.

[0060] In addition, the sharp structure of the tip of the needle electrode 16 allows the location of ion generation to be very precisely controlled. This is very important for applications that require increasing or decreasing ion concentration in a specific area, such as the generation of negative air ions in an air purifier.

[0061] Since the needle electrode 16 is relatively simple in design and is made of a metal or alloy that is generally resistant to high temperatures and corrosion, it has good stability and long-term reliability. During long-term operation, the ionization efficiency and performance of the needle electrode 16 change little, and the maintenance cost is relatively low.

[0062] In combination with the protection frame 104 described in Embodiment 1, it can prevent the user from coming into contact with the tip of the needle electrode 16 to a certain extent, thereby preventing the user from being stabbed.

[0063] Embodiment 3

[0064] Reference Figure 5 The difference between this embodiment and the first embodiment mainly lies in the design of the slot 103 .

[0065] In this embodiment, the number of the slots 103 matches the number of the brush electrodes, and there is a gap between two adjacent brush electrodes. The first housing 10 at the gap is set to be closed.

[0066] If the distance between adjacent electrodes is too close, arc discharge may occur, causing damage to the ion generating device and possibly fire and other safety issues. In this embodiment, the adjacent electrodes are spaced apart so that the two adjacent brush electrodes do not interfere with each other, preventing arc discharge and improving ionization efficiency. Furthermore, insulating materials may be used to isolate the electrodes.

[0067] In addition, the number of the protection frames is set to double the number of the slots. For the convenience of description, two slots are used as an example for description, and protection frames are respectively arranged on opposite sides of the two slots. Compared with the first embodiment, the size of the protection frame and the slots in this embodiment is designed to be smaller, and the small-sized protection frame is not suitable for setting support columns. In this embodiment, the frame of the protection frame is set wider, so that the protection frame is not easily deformed and has strong stability.

[0068] Embodiment 4

[0069] Reference Figure 6The difference between this embodiment and the third embodiment mainly lies in that the brush electrode 14 is replaced by a needle electrode 16 .

[0070] The tip of the needle electrode 16 can be set to be conical or have a very fine sharp angle.

[0071] The needle electrode 16 can generate a higher electric field strength at a lower voltage due to its sharp tip structure. This high electric field strength is conducive to the ionization of air molecules or atoms, thereby effectively generating ions. In contrast, electrodes of other shapes may require a higher voltage to achieve the same ionization effect.

[0072] In addition, the sharp structure of the tip of the needle electrode 16 allows the location of ion generation to be very precisely controlled. This is very important for applications that require increasing or decreasing ion concentration in a specific area, such as the generation of negative air ions in an air purifier.

[0073] Since the design of the needle electrode 16 is relatively simple and the material used is usually a metal or alloy that is resistant to high temperature and corrosion, it has good stability and long-term reliability. During long-term operation, the ionization efficiency and performance of the needle electrode 16 change little, and the maintenance cost is relatively low. The remaining features and advantages of this embodiment are the same as those of the third embodiment.

[0074] Embodiment 5

[0075] Reference Figures 7 and 8 The main difference between this embodiment and the first embodiment is that the protection frame 104 and the first shell 10 are designed to be separated.

[0076] In this embodiment, after the first shell 10 is connected to the second shell 11, the protection frame 104 is connected to the slot 103 of the first shell 10. The protection frame 104 is provided with an opening adapted to the brush electrode, and the brush electrode 14 will extend to the outside of the first shell along the opening.

[0077] Furthermore, in this embodiment, a closed opening 17 is provided on the side of the second housing 11, and a cover plate 170 is provided at the closed opening 17. The inner cavity of the ion generating device needs to be filled with insulating material, and in this embodiment, the insulating material is epoxy resin.

[0078] During the production process of the ion generating device, epoxy resin is poured into the inner cavity through the closed port 17, and after completion, the closed port 17 is sealed by the cover plate 170. At the same time, a plurality of venting ports 171 are provided on the housing 1, and after the epoxy resin is poured, the gas needs to be exhausted through the venting ports 171 to prevent bubbles from being left during the curing process of the epoxy resin.

[0079] Embodiment 6

[0080] Reference Fig. 9 The difference between this embodiment and the fifth embodiment is that the brush electrode 14 is replaced by a needle electrode 16 .

[0081] The tip of the needle electrode 16 can be set to be conical or have a very fine sharp angle.

[0082] Due to the sharp tip structure of the needle electrode 16, a higher electric field strength can be generated at a lower voltage. This high electric field strength is conducive to the ionization of air molecules or atoms, thereby effectively generating ions. In contrast, electrodes of other shapes may require higher voltages to achieve the same ionization effect.

[0083] In addition, the sharp structure of the tip of the needle electrode 16 allows the location of ion generation to be very precisely controlled. This is very important for applications that require increasing or decreasing ion concentration in a specific area, such as the generation of negative air ions in an air purifier.

[0084] Since the needle electrode 16 is relatively simple in design and is made of a metal or alloy that is generally resistant to high temperatures and corrosion, it has good stability and long-term reliability. During long-term operation, the ionization efficiency and performance of the needle electrode 16 change little, and the maintenance cost is relatively low.

[0085] The remaining features and advantages of this embodiment are the same as those of the fifth embodiment.

[0086] It is understandable that those skilled in the art can, under the guidance of the above embodiments, combine various implementation methods in the above embodiments to obtain technical solutions of multiple implementation methods.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An ion generating device, characterized in that: The invention comprises a shell, a circuit board and a plurality of brush electrodes, wherein the shell comprises a first shell and a second shell, the first shell is connected with the second shell to form an inner cavity, the circuit board and the brush electrodes are arranged in the inner cavity, a groove is arranged on the first shell, and a protective frame is arranged on opposite sides of the groove, the protective frame is integrally formed with the first shell or the protective frame is connected to the first shell, one end of the plurality of brush electrodes is electrically connected to the circuit board, and the other end of the plurality of brush electrodes extends along the groove to the outside of the first shell, and the height of the protective frame is greater than the height of the brush electrode based on the groove, and a through hole is arranged in the middle of the protective frame , a first groove is provided on the outer edge of the first shell, a first protruding structure is provided on the side of the first groove close to the inner cavity, a second groove is provided on the outer edge of the second shell, a second protruding structure is provided on the side of the second protruding structure close to the inner cavity, the first groove is adapted to the second protruding structure, and the second groove is adapted to the first protruding structure, the circuit board includes a first circuit board and a second circuit board, the second shell is provided with a plurality of limiting columns, the first circuit board is provided with limiting holes matching the limiting columns, the inner side wall of the second shell is provided with a third protruding structure, and the second circuit board is provided with a third groove adapted to the first protruding structure.

2. An ion generating device according to claim 1, characterized in that: The brush electrode was replaced with a needle electrode.

3. An ion generating device according to claim 1, characterized in that: The circuit board is provided with a plurality of terminals, and the plurality of terminals extend to the outside of the shell and are used for connecting to external devices.

4. An ion generating device according to claim 3, characterized in that: It also includes a timing circuit, which includes a timing chip, and the timing chip is electrically connected to the terminal.

5. An ion generating device according to claim 1, characterized in that: The shell body is provided with a closed opening, and a cover plate is provided at the closed opening.

6. An ion generating device according to claim 1, characterized in that: The protection frame is provided with at least one supporting column, and the supporting column is provided with a straight-line structure.

7. An electrical appliance, characterized in that: It comprises the ion generating device as described in any one of claims 1 to 6, wherein a bayonet is provided on the shell of the ion generating device, and a fixing structure cooperating with the bayonet is provided on the electrical appliance.

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