Sterilization and deodorization device and refrigeration equipment

Abstract

The invention relates to the technical field of refrigeration equipment, and discloses a sterilization and deodorization device and refrigeration equipment. The sterilization and deodorization device comprises a condensate water collecting device, an ultrasonic atomization sheet and a discharge structure, the discharge structure comprises a first discharge electrode and a second discharge electrode, and a first sawtooth structure is arranged on the side, facing the second discharge electrode, of the first discharge electrode; the first discharge electrodes and the second discharge electrodes are sequentially arranged at intervals in the airflow flowing direction to form an expanded discharge space; and the mist can be sprayed out after being ionized by the expanded discharge space. The potential field between the first discharge electrode and the second discharge electrode can drive particles with different polarities to directionally move to form ionic wind, and the expanded discharge space can enable the ionic wind to outwards diffuse and move, so that the active ion diffusion range is increased, the contact and combination probability of atomized gas and active substances is increased, and the sterilization and deodorization effects are effectively improved. Moreover, harmful effects on human bodies are avoided, and the sterilization and disinfection safety is high.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to a sterilization and deodorization device and refrigeration equipment. Background Art

[0002] Refrigeration equipment preserves food at low temperatures, extending its freshness and shelf life. However, over time, bacteria and mold can easily accumulate inside refrigeration equipment, as well as odors caused by food spoilage. This not only affects food quality but also poses a potential health threat to users.

[0003] Taking refrigerators as an example, current disinfection methods for refrigeration equipment on the market either use chemical detergents or ultraviolet light for sterilization. Chemical disinfection easily leaves chemical residues, while prolonged use of ultraviolet light can cause harm to the human body. Therefore, existing sterilization methods for refrigeration equipment pose health and safety risks. Summary of the Invention

[0004] In view of this, the present invention provides a sterilization and deodorization device and a refrigeration device to solve the problem that the sterilization and disinfection method of the refrigeration equipment has health and safety risks.

[0005] In a first aspect, the present invention provides a sterilization and deodorization device, comprising: Condensate collection device, used to condense water vapor in the environment into condensed water and collect it; Ultrasonic atomizer, used to atomize the collected condensed water; A discharge structure is provided on the flow path of the mist formed by the atomization of the condensed water; the discharge structure comprises: A first discharge electrode, used to connect to the positive electrode of a high voltage power supply; The second discharge electrode is used to connect the negative electrode of the high voltage power supply; A first sawtooth structure is provided on the side of the first discharge electrode facing the second discharge electrode; and the first discharge electrode and the second discharge electrode are arranged in sequence and spaced apart along the airflow direction to form an expanded discharge space; mist can be ionized and ejected through the expanded discharge space.

[0006] Beneficial Effects: The first and second discharge electrodes are spaced apart along the airflow direction to form an expanded discharge space. The electric potential field between the first (high-voltage) and second (low-voltage) discharge electrodes drives particles of different polarities to directional motion, forming an ion wind. The expanded discharge space causes the ion wind to diffuse outward, increasing the diffusion range of active ions. When the sterilization and deodorization device utilizes the discharge structure of the present invention, the ionized active substances move in a directional manner while simultaneously expanding their diffusion range, increasing the probability of contact and bonding between the atomized vapor and the active substances. The ionized active substances significantly prolong their survival time after bonding with the mist, forming stable ion clusters. This effectively enhances the sterilization and deodorization effectiveness, eliminates chemical residues, and prevents harmful effects on the human body, thereby improving sterilization and disinfection safety. In a low-temperature environment, the humidity difference is directly utilized to condense water vapor in the air into condensed water. The high-frequency oscillation of the ultrasonic atomizer converts the liquid condensed water into micron-sized cold mist. As the cold mist passes through the discharge space, it combines with the active substances generated by the high-voltage ionization to form stable ion clusters, extending the survival time of the sterilization active substances and effectively enhancing the sterilization and deodorization effectiveness.

[0007] In an optional embodiment, the discharge space is in the shape of a gradually expanding frustum.

[0008] Beneficial effects: The discharge space adopts a gradually expanding cone shape, which is convenient for design and processing. The gradually expanding cone shape can promote the combination and diffusion of mist and active substances, prolong the active state of ion clusters, and effectively improve the sterilization efficiency and sterilization and deodorization effect.

[0009] In an optional embodiment, a third discharge electrode is provided in the discharge space formed between the first discharge electrode and the second discharge electrode.

[0010] Beneficial effect: On the basis of the accelerating electric fields of the first and second discharge electrodes, the third discharge electrode can provide a secondary accelerating electric field, which serves as a power auxiliary structure to provide additional power for the movement of active substances generated by ionization, further accelerating the combination of active substances and water mist.

[0011] In an optional embodiment, a second sawtooth structure is provided on a side of the third discharge electrode facing the second discharge electrode.

[0012] Beneficial effect: The second serrated structure of the third discharge electrode serves as a tip. Compared with the smooth electrode serrated structure, it can expand the discharge range and enhance the ion wind intensity, drive the charged particles to move in a directional manner, further accelerate the electric field, and improve the collision and combination efficiency of the charged active particles and the water mist.

[0013] In an optional embodiment, the first discharge electrode, the second discharge electrode and the third discharge electrode are all truncated cone-shaped.

[0014] Beneficial effects: The three discharge electrodes are all in the shape of a truncated cone, and after being installed, a gradually expanding truncated cone-shaped discharge space is directly formed, which has a simple structure and is easy to process and assemble.

[0015] In an optional embodiment, the condensed water collecting device includes: The heat conducting component acts as a condensation matrix for water vapor; The water absorbing member is arranged on the heat conducting component and is used for collecting condensed water.

[0016] Beneficial effect: The heat-conducting component is set in a low-temperature environment. The water vapor in the low-temperature environment absorbs the heat emitted by the heat-conducting component and condenses on the heat-conducting component to form liquid condensed water. The condensed water is effectively collected by the water-absorbing component so as to be atomized to produce mist.

[0017] In an optional embodiment, the heat conducting component includes: The heating ceramic piece is connected to a power source; The heat sink is arranged on a side of the heating ceramic sheet away from the water absorbing member.

[0018] Beneficial effect: The heat sink distributed on the side of the heating ceramic sheet away from the water absorbing member absorbs the heat of the heating ceramic sheet, increases the heat dissipation area between the heat conducting component and the ambient air, and improves the heat exchange and condensation efficiency.

[0019] In an optional embodiment, the ultrasonic atomization sheet is attached to the water absorbing member.

[0020] Beneficial effect: The ultrasonic atomizing sheet is attached to the water absorbing member, so that the ultrasonic vibration energy is reliably transmitted to the water absorbing member and then to the condensed water, with direct effect and less energy loss.

[0021] In an optional embodiment, the sterilization and deodorization device further includes a bracket assembly, and the bracket assembly includes: An insulating bracket, used for fixing the discharge structure; A support frame is provided on the insulating support and is used for fixing the condensed water collecting device and the ultrasonic atomizing sheet.

[0022] Beneficial effects: A bracket assembly is provided to firmly fix the condensate collection device, ultrasonic atomizer and discharge structure, ensuring reliable operation of the sterilization and deodorization device; the discharge structure is fixed by an insulating bracket, ensuring reliable installation while ensuring insulation safety.

[0023] In an optional embodiment, the insulating bracket includes: Insulation body; The installation cavity is opened in the insulating body so that the insulating body forms a hollow rotating body; the installation cavity includes a tapered cavity, and the first discharge electrode and the second discharge electrode are respectively arranged at two ends of the tapered cavity.

[0024] Beneficial effects: The insulating body is a hollow rotating body, the first discharge electrode and the second discharge electrode are respectively arranged at the two ends of the tapered cavity of the installation cavity, the first discharge electrode, the second discharge electrode and the insulating body form an expanded discharge space, the structure is simple, and the discharge space structure is stable and reliable.

[0025] In a third aspect, the present invention further provides a refrigeration device, comprising: refrigerated chamber; The sterilization and deodorization device described in any of the above items is arranged in the refrigeration chamber.

[0026] Beneficial effects: The sterilization and deodorization device of the present invention is arranged in the refrigeration chamber of the refrigeration equipment. The condensation water collection device condenses the water vapor in the air into condensation water in the low temperature environment of the refrigeration chamber, and then utilizes the high-frequency oscillation effect of the ultrasonic atomization plate to convert the liquid condensation water into micron-level cold mist. When the cold mist passes through the discharge space of the discharge structure, it combines with the active substance generated by high-voltage ionization to form stable ion clusters, thereby prolonging the survival time of the sterilization active substance and effectively improving the sterilization and deodorization effect.

[0027] In an optional embodiment, the refrigeration device is a refrigerator.

[0028] Beneficial effects: The sterilization and deodorization device of the present invention is arranged in the refrigeration chamber of the refrigerator. The ultrasonic atomization sheet can atomize the collected condensed water. The discharge structure with an expanded discharge space can fully mix the ion wind with the water mist. The water mist and the discharge particles are combined, mixed and accelerated in the discharge structure, thereby achieving effective sterilization and deodorization. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a front view of a discharge structure according to an embodiment of the present invention, in which arrows indicate the direction of airflow; Figure 2 A cross-sectional view of a sterilization and deodorization device according to an embodiment of the present invention; Figure 3 This is a front view of a heat conducting component according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of a water absorbing member according to an embodiment of the present invention; Figure 5This is a top view of a sterilization and deodorization device according to an embodiment of the present invention.

[0031] Description of reference numerals: 1. The first discharge electrode; 11. The first sawtooth structure; 2. Second discharge electrode; 3. The third discharge electrode; 31. Second sawtooth structure; 4. Thermal conductive components; 41. Heating ceramic sheet; 42. Heat sink; 5. Support frame; 6. Water-absorbing parts; 7. Insulation bracket; 8. Ultrasonic atomizer. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention depending on the specific circumstances.

[0035] The following combination Figures 1 to 5 , describing embodiments of the present invention.

[0036] According to an embodiment of the present invention, on the one hand, Figure 1 As shown, a discharge structure is provided, comprising: The first discharge electrode 1 is used to connect to the positive electrode of the high voltage power supply; The second discharge electrode 2 is used to connect to the negative electrode of the high voltage power supply; A first sawtooth structure 11 is provided on a side of the first discharge electrode 1 facing the second discharge electrode 2 ; and the first discharge electrode 1 and the second discharge electrode 2 are sequentially spaced apart along the airflow direction to form an expanded discharge space.

[0037] The first discharge electrode 1 and the second discharge electrode 2 are arranged in sequence along the direction of airflow to form an expanded discharge space. The electric potential field between the first discharge electrode 1 (high-voltage electrode) and the second discharge electrode 2 (low-voltage electrode) can drive particles of different polarities to move in a directional manner to form an ion wind, and the expanded discharge space can cause the ion wind to diffuse outward, increasing the diffusion range of active ions. After the sterilization and deodorization device uses the discharge structure of the present invention, the active substances generated by ionization move in a directional manner and the diffusion range is increased, so that the contact and combination probability of the atomized gas and the active substances is increased. The survival time of the active substances generated by ionization after combining with the mist is significantly prolonged, reducing the direct collision and charge neutralization chance of the active substances with positive ions in the air; and the low mobility of the water mist slows down the diffusion rate of the ions and reduces energy loss, thereby maintaining their active state for a longer time, forming stable ion clusters, effectively improving the sterilization and deodorization effect, eliminating chemical residues, and not having harmful effects on the human body, thereby improving the safety of sterilization and disinfection.

[0038] It should be noted that the voltage of the high voltage power supply referred to in the present invention is in the range of 5kV to 50kV.

[0039] In some embodiments, the discharge space is in a gradually expanding frustum shape.

[0040] The discharge space adopts a gradually expanding cone shape, which is convenient for design and processing. The gradually expanding cone shape can promote the combination and diffusion of mist and active substances, prolong the active state of ion clusters, and effectively improve the sterilization efficiency and sterilization and deodorization effect.

[0041] In some embodiments, a third discharge electrode 3 is provided in the discharge space formed between the first discharge electrode 1 and the second discharge electrode 2 .

[0042] On the basis of the accelerating electric fields of the first discharge electrode 1 and the second discharge electrode 2, the third discharge electrode 3 can provide a secondary accelerating electric field as a power auxiliary structure to provide additional power for the movement of the active substances generated by ionization, further accelerating the combination of the active substances and the water mist.

[0043] In some embodiments, a second sawtooth structure 31 is provided on a side of the third discharge electrode 3 facing the second discharge electrode 2 .

[0044] The sawtooth structure of the third discharge electrode 3 serves as a tip, which can expand the discharge range and enhance the ion wind intensity compared to the smooth electrode sawtooth structure, drive the charged particles to move in a directional manner, further accelerate the electric field, and improve the collision and combination efficiency of the charged active particles and the water mist.

[0045] In some embodiments, the first discharge electrode 1 , the second discharge electrode 2 and the third discharge electrode 3 are all in the shape of a truncated cone.

[0046] The three discharge electrodes are all in the shape of a truncated cone, and after being installed, a gradually expanding truncated cone-shaped discharge space is directly formed. The structure is simple and easy to process and assemble.

[0047] According to an embodiment of the present invention, on the other hand, Figure 2 and Figure 5 As shown, a sterilization and deodorization device suitable for use in a low-temperature environment is also provided, comprising: A condensed water collection device, used to condense the water vapor in the low-temperature environment into condensed water and collect it; Ultrasonic atomizing sheet 8, used to atomize the collected condensed water; The discharge structure is arranged on the flow path of the mist formed by the atomization of the condensed water; the mist can be ionized through the expanded discharge space and then ejected.

[0048] In a low-temperature environment, the humidity difference is directly used to condense the water vapor in the air into condensed water, and then the high-frequency oscillation of the ultrasonic atomizer 8 is used to convert the liquid condensed water into micron-level cold mist. When the cold mist passes through the discharge space, it combines with the active substances produced by high-voltage ionization to form stable ion clusters, which prolongs the survival time of the bactericidal active substances and effectively improves the bactericidal and deodorizing effects.

[0049] It should be noted that the ambient temperature of the low-temperature environment as a refrigerated environment is 0°C to 8°C.

[0050] In some embodiments, as Figure 2 As shown, the condensed water collecting device includes: The heat conducting component 4 is arranged in the low temperature environment and serves as a condensation matrix for water vapor; The water absorbing member 6 is provided on the heat conducting component 4 and is used to collect condensed water. Figure 4 Specifically, a porous water-absorbing sponge can be used, which has a good absorption effect and is also convenient for the oscillation atomization of the ultrasonic atomization piece 8.

[0051] The heat conducting component 4 is set in a low temperature environment. The water vapor in the low temperature environment absorbs the heat emitted by the heat conducting component 4 and condenses on the heat conducting component 4 to form liquid condensed water. The condensed water is effectively collected by the water absorbing member 6 so as to be atomized to produce mist.

[0052] In some embodiments, as Figure 3 As shown, the heat conducting component 4 includes: The heating ceramic sheet 41 is connected to a power source; The heat sink 42 is disposed on a side of the heating ceramic plate 41 facing away from the water absorbing member 6 .

[0053] The heat sink 42 distributed on the side of the heating ceramic sheet 41 away from the water absorbing member 6 absorbs the heat of the heating ceramic sheet 41, increases the heat dissipation area between the heat conducting component 4 and the ambient air, and improves the heat exchange and condensation efficiency.

[0054] In some embodiments, the ultrasonic atomizing sheet 8 is attached to the water absorbing member 6 .

[0055] The ultrasonic atomizing sheet 8 is attached to the water absorbing member 6 so that the ultrasonic vibration energy can be reliably transmitted to the water absorbing member 6 and then to the condensed water, with direct effect and low energy loss.

[0056] In some embodiments, the sterilization and deodorization device further includes a bracket assembly, wherein the bracket assembly includes: Insulating bracket 7, used for fixing the discharge structure; The support frame 5 is provided on the insulating support 7 and is used to fix the condensed water collecting device and the ultrasonic atomizing sheet 8.

[0057] A bracket assembly is provided to firmly fix the condensate collection device, the ultrasonic atomization sheet 8 and the discharge structure to ensure reliable operation of the sterilization and deodorization device; the discharge structure is fixed by an insulating bracket 7 to ensure insulation safety while ensuring reliable installation.

[0058] In some embodiments, the insulating support 7 includes: Insulation body; The installation cavity is opened in the insulating body so that the insulating body forms a hollow rotating body; the installation cavity includes a tapered cavity, and the first discharge electrode 1 and the second discharge electrode 2 are respectively arranged at two ends of the tapered cavity.

[0059] The insulating body is a hollow rotating body. The first discharge electrode 1 and the second discharge electrode 2 are respectively arranged at the two ends of the tapered cavity of the installation cavity. The first discharge electrode 1, the second discharge electrode 2 and the insulating body form an expanded discharge space. The structure is simple, and the discharge space structure is stable and reliable.

[0060] According to another aspect of an embodiment of the present invention, a refrigeration device is provided, comprising: refrigerated chamber; A sterilization and deodorization device is arranged in the refrigeration chamber.

[0061] The sterilization and deodorization device of the present invention is arranged in the refrigeration chamber of the refrigeration equipment. In the low-temperature environment of the refrigeration chamber, the condensation water collection device condenses the water vapor in the air into condensation water, and then utilizes the high-frequency oscillation effect of the ultrasonic atomization plate 8 to convert the liquid condensation water into micron-level cold mist. When the cold mist passes through the discharge space of the discharge structure, it combines with the active substance generated by high-voltage ionization to form stable ion clusters, thereby prolonging the survival time of the sterilization active substance and effectively improving the sterilization and deodorization effect.

[0062] Specifically, since the sterilization and deodorization device is small in size, it can be installed at will according to the structure of the refrigerator. In some embodiments, the position of the refrigerator purification device is generally installed on the back of the cold storage chamber.

[0063] In some embodiments, the refrigeration device is a refrigerator.

[0064] The sterilization and deodorization device of the present invention is arranged in the refrigeration chamber of the refrigerator. The ultrasonic atomizer 8 can atomize the collected condensed water. The discharge structure with an expanded discharge space can fully mix the ion wind with the water mist, and complete the combination, mixing and accelerated movement of the water mist and the discharge particles in the discharge structure, thereby achieving effective sterilization and deodorization.

[0065] It should be noted that due to the need to collect condensed water and to prevent freezing, sterilization and deodorization devices are generally installed in the refrigeration chamber.

[0066] The specific embodiment of the present invention provides a refrigerator with a sterilization and deodorization device, such as Figure 1-Figure 5As shown, the sterilization and deodorization device primarily consists of a heat-conducting component 4, a condensed water collection device (condensed water adsorption device), and a discharge structure. The heat-conducting component 4 consists of a heating ceramic sheet 41 and a heat sink 42. The heating ceramic sheet 41 can be heated by a DC power supply. The side of the heating ceramic sheet 41 facing away from the absorbent sponge is connected to evenly spaced heat sinks 42. These heat sinks 42 increase the device's heat dissipation area and utilize the temperature difference between the heat-conducting component 4 and the refrigerator's low-temperature environment to accelerate the condensation of water vapor in the surrounding air. The condensed water collection device includes an absorbent sponge wrapped around the heating ceramic sheet 41. The porous absorbent sponge absorbs condensed water from the heat-conducting component 4. The surface of the absorbent sponge is covered with an ultrasonic atomizer 8, which is driven by a DC power supply and uses high-frequency vibrations to convert the water in the sponge into a small-molecule water mist. This method produces a low atomization volume, which does not affect the original humidity of the refrigerator's refrigeration chamber. Since no additional water tank is required, the refrigerator's existing refrigeration structure is not affected. By controlling the operating temperature and heating logic of the heating ceramic sheet 41, the temperature rise of the surrounding environment can be minimized. The discharge structure consists of a high-voltage discharge electrode (first discharge electrode 1), a low-voltage discharge electrode (second discharge electrode 2), and a suspended discharge electrode (third discharge electrode 3). The electric potential field between the high-voltage and low-voltage discharge electrodes drives particles of different polarities to move in a directional manner, forming an ion wind. Simultaneously, the suspended discharge electrode is induced to become charged in the electric field, forming an auxiliary electric field that provides secondary motive force for particle movement. The trapezoidal discharge structure helps the ion wind diffuse and eject. Combined with the mist droplets formed by the condensed water from the ultrasonic atomizer 8, the mist droplets and discharged particles combine, mix, and accelerate within the discharge structure, achieving odor removal and sterilization effects.

[0067] Under the action of high voltage, the discharge structure creates a strong electric field that breaks down the air, generating plasma (positive or negative). The charged ions collide and combine with the mist droplets, charging the droplets. The electric field formed between the high-voltage and low-voltage discharge electrodes drives the charged droplets away. The discharge structure produces a large number of active particles, including highly oxidizing substances such as reactive oxygen and reactive nitrogen. The water mist atomized by the ultrasonic atomizer 8 ionizes more hydroxyl groups through corona discharge, which can increase the spatial density of the active substances to a certain extent. At the same time, the droplets can encapsulate the active substances, forming an active spray, extending the lifespan and movement path of the active particles, achieving the dual effects of deodorization and sterilization, while being environmentally friendly and pollution-free, and providing higher safety.

[0068] It should be noted that in high-voltage equipment, the suspended discharge electrode serving as the third discharge electrode 3 refers to an ungrounded conductor used for specific electric field distribution or charge accumulation. The high-voltage discharge electrode, the low-voltage discharge electrode and the suspended discharge electrode are all fixed on the conical inner wall of the rotating body-shaped insulating bracket 7. The high-voltage discharge electrode and the low-voltage discharge electrode can form a loop. At the same time, during the high-voltage discharge process, due to the principle of electromagnetic induction, the induced suspended electrode produces polarity. At this time, the sawtooth structure of the suspended discharge position will also form a discharge loop to the ground, forming an auxiliary electric field. The position of the sawtooth structure determines the movement path of the excited particles, that is, the direction of the ion wind. The air intake direction of the entire device is from the side wall (see Figure 2 The ion wind then moves downward, aligning with the direction of the electric field. The expanded discharge space causes the ion wind to radiate outward, and with the secondary assistance of the auxiliary electric field formed by the suspended discharge electrode, the ion wind travels further, expanding the disinfection area and achieving a comprehensive sterilization process. Furthermore, the sterilization and deodorization device of the present invention is easy to integrate, compact, and does not occupy space within the refrigerator.

[0069] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by this application.

Claims

1. A sterilization and deodorization device, characterized in that: include: Condensate collection device, used to condense water vapor in the environment into condensed water and collect it; An ultrasonic atomizing sheet (8) for atomizing the collected condensed water; A discharge structure is provided on the flow path of the mist formed by the atomization of the condensed water; the discharge structure comprises: A first discharge electrode (1) for connecting to the positive electrode of a high-voltage power supply; A second discharge electrode (2) for connecting to the negative electrode of a high-voltage power supply; A first sawtooth structure (11) is provided on the side of the first discharge electrode (1) facing the second discharge electrode (2); the first discharge electrode (1) and the second discharge electrode (2) are sequentially spaced along the airflow direction to form an expanded discharge space; and mist can be ionized through the expanded discharge space and then ejected.

2. The sterilization and deodorization device according to claim 1, characterized in that: The discharge space is in a gradually expanding frustum shape.

3. The sterilization and deodorization device according to claim 1 or 2, characterized in that: A third discharge electrode (3) is provided in the discharge space formed between the first discharge electrode (1) and the second discharge electrode (2).

4. The sterilization and deodorization device according to claim 3, characterized in that: A second sawtooth structure (31) is provided on the side of the third discharge electrode (3) facing the second discharge electrode (2).

5. The sterilization and deodorization device according to claim 3, characterized in that: The first discharge electrode (1), the second discharge electrode (2) and the third discharge electrode (3) are all truncated cone-shaped.

6. The sterilization and deodorization device according to claim 1, characterized in that: The condensed water collecting device comprises: A heat conducting component (4) serving as a condensation matrix for water vapor; A water absorbing member (6) is provided on the heat conducting component (4) and is used to collect condensed water.

7. The sterilization and deodorization device according to claim 6, characterized in that: The heat conducting component (4) comprises: A heating ceramic sheet (41) connected to a power source; The heat sink (42) is arranged on a side of the heating ceramic plate (41) facing away from the water absorbing member (6).

8. The sterilization and deodorization device according to claim 6 or 7, characterized in that: The ultrasonic atomizing sheet (8) is attached to the water absorbing member (6).

9. The sterilization and deodorization device according to claim 1, characterized in that: The sterilization and deodorization device further includes a bracket assembly, which includes: An insulating bracket (7) for fixing the discharge structure; A support frame (5) is provided on the insulating support (7) and is used to fix the condensed water collecting device and the ultrasonic atomizing sheet (8).

10. The sterilization and deodorization device according to claim 9, characterized in that: The insulating bracket (7) comprises: Insulation body; The installation cavity is opened in the insulating body so that the insulating body forms a hollow rotating body; the installation cavity comprises a conical cavity, and the first discharge electrode (1) and the second discharge electrode (2) are respectively arranged at two ends of the conical cavity.

11. A refrigeration device, characterized in that: include: refrigerated chamber; The sterilization and deodorization device according to any one of claims 1 to 10, wherein the sterilization and deodorization device is arranged in the refrigeration chamber.

12. The refrigeration device according to claim 11, characterized in that The refrigeration equipment is a refrigerator.

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