Patent Description:
A refrigerator will breed bacteria after a period of use, resulting in odor. In order to improve food safety and user experience, some refrigerators will be installed with sterilization boxes. A lid of the sterilization box has a plurality of vent holes, and the sterilization box is placed with a slow-release agent wrapped by a non-woven fabric, such as an adsorbed solid chlorine dioxide slow-release agent. Chlorine dioxide slow-release agent absorbs water in air through the vent holes, and then produces chlorine dioxide gas. Chlorine dioxide gas can kill viruses, bacteria, protozoa, algae, fungi and various spores and spore-forming bacteriophages, it also does not react with organic matter by chlorination, and does not produce mutagenic, carcinogenic and teratogenic substances or other toxic substances.

However, a speed of the chlorine dioxide slow-release agent releasing chlorine dioxide gas is related to a temperature and humidity of the surrounding environment. The higher the temperature or humidity of the surrounding environment, the more water the chlorine dioxide slow-release agent absorbs, and the faster the chlorine dioxide gas is released. However, with the passage of time, the ability of chlorine dioxide slow-release agent releasing chlorine dioxide gas will gradually weaken until it completely fails. Due to the vagaries of the temperature and humidity of the surrounding environment, the service life of chlorine dioxide slow-release agent is difficult to predict. In addition, the concentration of chlorine dioxide gas is not high under normal conditions, so it is difficult for users to determine whether the chlorine dioxide slow-release agent has failed by smelling it, resulting in users unable to replace it in time. <CIT> relates to the technical field of refrigeration equipment, in particular to a dry storage box and refrigeration equipment. The dry storage box comprises a storage box body and a drying agent box, the storage box body is provided with an air vent, the drying agent box covers the air vent and is located in the storage box body, the drying agent box is provided with a first through hole communicating with an internal cavity of the storage box body, a color-changing drying agent is arranged in the drying agent box, and a second through hole is formed in the side, facing the air vent of the drying agent box. In the using process, when entering the drying storage box via the air vent, air needs to be filtered by the color-changing drying agent to form dry air; when the amount of moisture absorbed by the water color-changing drying agent is saturated, people can observe color change of the color-changing drying agent via the air vent so as to replace the color-changing drying agent in time.

<CIT> discloses a domestic refrigerator including a housing having a refrigerated compartment defined therein, and a sliding drawer positioned in the refrigerated compartment. The sliding drawer has a storage chamber defined therein, and a mounting bracket is secured to the sliding drawer and extends into the storage chamber. The domestic refrigerator also includes a plurality of interchangeable utility modules that are configured to be positioned within the storage chamber of the sliding drawer. Each of the plurality of the interchangeable utility modules includes a mounting bracket sized and configured to be separately mated with the mounting bracket of the sliding drawer.

An objective of the present application is to solve at least one of the problems existing in the related art.

One of the objectives of the embodiments of the present application is to provide a volatilization device that can determine the validity of an object to be stored, so that users can replace it in time.

The volatilization device according to claim <NUM> includes:.

The volatilization device according to an embodiment of the present application fixes the color-changing member on the housing, exposes a side of the color-changing member to the cavity of the housing, and makes another side of the color-changing member visible from an outer wall of the housing, and then users can determine a validity of an object to be stored in the cavity by observing a color-changing member of the color-changing member, which facilitates users to change the in time.

In an embodiment, an observation window communicated with the cavity is provided on the housing, and the color-changing member is embedded in the observation window.

In an embodiment, the observation window is further embedded with a transparent plate, and the transparent plate is provided on a side of the color-changing member away from the cavity.

In an embodiment, the color-changing member is embedded in the air outlet, and a projection area of the color-changing member on the air outlet is smaller than an area of the air outlet.

In an embodiment, the color-changing member is gelatin, and the target gas is chlorine dioxide gas.

According to the invention, the volatilization device further includes: a first annular rib, provided in the cavity to divide the cavity into an accommodation cavity and an annular cavity distributed inside and outside, where the accommodation cavity is provided on an inner side of the annular cavity, the first annular rib is provided with a first vent hole communicating the accommodation cavity with the annular cavity, and the first vent hole is provided separately with the air outlet.

According to the invention, the volatilization device further includes: a partition plate, provided in the annular cavity to divide the annular cavity into two buffer cavities distributed in front and back, where the partition plate is provided with a second vent hole communicating the two buffer cavities; and
the accommodation cavity is communicated with one of the two buffer cavities through the first vent hole, and another of the two buffer cavities is communicated with the air outlet.

In an embodiment, the first vent hole is a notch formed at a first side edge of the first annular rib, and the air outlet is provided near a second side edge of the first annular rib located opposite to the first side edge of the first annular rib.

In an embodiment, an inner wall of the housing facing the notch is provided with a baffle plate opposite to the notch, and the baffle plate is located in the accommodation cavity, a free end of the baffle plate extends toward the second side edge of the first annular rib, an extension length of the baffle plate is not less than a height of the notch, and a gap is provided between a side wall of the baffle plate facing the first annular rib and the first annular rib.

In an embodiment, the air outlet is formed on a side wall of the back cover and is located at an edge of the back cover away from the front cover, and the color-changing member is fixed on the front cover and/or the air outlet.

In an embodiment, a side of the front cover facing the back cover is provided with a second annular rib, the second annular rib extends into the annular cavity, and the second annular rib closes to a side wall of the back cover.

In an embodiment, a side wall of the annular cavity is provided with a plurality of wedge-shaped protrusions, a side of the front cover facing the back cover is provided with a plurality of first clamping hooks corresponding to the wedge-shaped protrusions in one-to-one correspondence on a, and the first clamping hook clamps with the corresponding wedge-shaped protrusion.

In an embodiment, a side of the front cover facing the back cover is provided with a plurality of clamping buckles, a placement space of an object to be stored is formed among the plurality of clamping buckles, and a free end of the clamping buckle bends toward a center of the front cover.

The embodiments of the present application further provide a storage device, including a box body and the volatilization device mentioned above, where the housing is fixed in the box body.

To more clearly illustrate the embodiments of the present application or related art, accompanying drawings used in the description of the embodiments or the prior art are briefly introduced below. It should be noted that, the drawings in the following description only show some embodiments of the present application. For those of ordinary skill in the art, other drawings may also be obtained according to these drawings without creative effort.

<NUM>: housing; <NUM>: accommodation cavity; <NUM>: first buffer cavity; <NUM>: second buffer cavity; <NUM>: front cover; <NUM>: baffle plate; <NUM>: gap; <NUM>: second annular rib; <NUM>: first clamping hook; <NUM>: clamping buckle; <NUM>: third annular rib; <NUM>: force applying member; <NUM>: back cover; <NUM>: air outlet; <NUM>: first annular rib; <NUM>: notch; <NUM>: partition plate; <NUM>: second vent hole; <NUM>: first clamping hole; <NUM>: wedge-shaped protrusion; <NUM>: second clamping hook; <NUM>: box body; <NUM>: second clamping hole; <NUM>: drawer; <NUM>: chlorine dioxide slow-release agent; <NUM>: first magnetic member; <NUM>: second magnetic member; <NUM> transparent plate; <NUM>: color-changing member.

In order to more clearly illustrate the objectives, solutions, and advantages of the present application, the embodiments of the present application are further described in detail below in combination with the accompanying drawings and implementation. It should be noted, without confliction, the embodiments or the features of the embodiments can be combined with each other.

In the description of the present application, it is to be noted that, the orientation or positional relations specified by terms such as "central", "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, are based on the orientation or positional relations shown in the drawings, which is merely for convenience of description of the present application and to simplify description, but does not indicate or imply that the stated devices or components must have the particular orientation and be constructed and operated in a particular orientation, and thus it is not to be construed as limiting the present application. Furthermore, the terms "first", "second", "third" and the like are only used for descriptive purposes and should not be construed as indicating or implying a relative importance.

In the description of the present application, it is to be noted that unless explicitly specified and defined otherwise, the terms "connected to" and "connected" shall be understood broadly, for example, it may be either fixedly connected or detachably connected, or can be integrated; it may be either mechanically connected, or electrically connected; it may be either directly connected, or indirectly connected through an intermediate medium. The specific meanings of the terms above in the present application can be understood by a person skilled in the art in accordance with specific conditions.

As shown in <FIG>, a volatilization device of an embodiment includes a housing <NUM> and a color-changing member <NUM>. The housing <NUM> has a cavity for accommodating an object to be stored, and the housing <NUM> is provided with an air outlet <NUM> communicated with the cavity. The color-changing member <NUM> is fixed on the housing <NUM>, where a side of the color-changing member <NUM> is exposed to the cavity, and another side of the color-changing member <NUM> visible from an outer wall of the housing <NUM>, that is, the color-changing member <NUM> can be observed from an outer side of the housing <NUM>. The color-changing member <NUM> changes color according to a concentration of a target gas (that is, a gas released by an object to be stored) in the cavity. The object to be stored can be, but is not limited to, a solid fungicide or a solid aromatic agent.

By taking an object to be stored being chlorine dioxide slow-release agent <NUM> and a color-changing member <NUM> being gelatin as an example, the working principle of the volatilization device in an embodiment of the present application when applied to a refrigerator is described as follows.

Gelatin is the product of partial hydrolysis of collagen, and is a hydrophilic colloid of macromolecules. Gelatin is colorless to light yellow solid, and odorless, tasteless and shiny. Gelatin is insoluble in water, but when soaked in water, it can absorb <NUM> to <NUM> times of the water, and then is expanded and softened. After the gelatin absorbing yellowish green to orange chlorine dioxide gas, gelatin color will become yellowish green to orange.

When being used, the housing <NUM> placed with chlorine dioxide slow-release agent <NUM> is put into the refrigerator, and water vapor in the refrigerator will enter the cavity through the air outlet <NUM>. The chlorine dioxide slow-release agent <NUM> stored in the cavity releases chlorine dioxide gas after absorbing the water vapor. Since a side of the color-changing member <NUM> (that is, the gelatin) is exposed to the cavity, the gelatin can directly contact with the chlorine dioxide gas in the cavity. The color of the gelatin gradually changes from colorless to light yellow to yellowish green to orange after absorbing the chlorine dioxide gas. In addition, the chlorine dioxide gas in the cavity continuously flows into the refrigerator through the air outlet <NUM>. With the passage of time, the ability of chlorine dioxide slow-release agent <NUM> to release chlorine dioxide gas gradually weakens. After the chlorine dioxide slow-release agent <NUM> fails, the chlorine dioxide slow-release agent <NUM> will not release chlorine dioxide gas. The chlorine dioxide gas adsorbed by gelatin is released, and the color of gelatin changes from yellow green to orange yellow to light yellow to colorless. Since another side of the gelatin can be seen from an outer wall of the housing <NUM>, the user does not need to open the housing <NUM>, and the color changing of the gelatin can be observed directly from the outer side of the housing <NUM>. When the user observes that the color of gelatin is yellowish green to orange yellow, it indicates that the chlorine dioxide slow-release agent <NUM> is still effective; and when the user observes that the color of the gelatin is restored to light yellow to colorless, it indicates that the chlorine dioxide slow-release agent <NUM> has failed, so that the user can replace the chlorine dioxide slow-release agent <NUM> or the entire volatilization device in time.

In order to make a side the color-changing member <NUM> being exposed to the cavity and another side of the color-changing member <NUM> being visible from the outer wall of the housing <NUM>, the installation position and modes of the color-changing member <NUM> are various. The following modes will be given as examples.

Mode one: one side of the color-changing member <NUM> is directly exposed to the cavity. As shown in <FIG>, <FIG>, an observation window communicated with the cavity is provided on the housing <NUM>, and the color-changing member <NUM> is embedded in the observation window. In this mode, one side of the color-changing member <NUM> is exposed to the cavity, and another side of the color-changing member <NUM> is exposed to the external environment. In order to avoid the color-changing member <NUM> from being damaged, the observation window is further embedded with a transparent plate <NUM>, and the transparent plate <NUM> is provided on a side of the color-changing member <NUM> away from the cavity. In order to improve the accuracy, as shown in <FIG>, there can be provided with a plurality of observation windows.

Mode two: one side of the color-changing member <NUM> is indirectly exposed to the cavity. Since the air outlet <NUM> is communicated with the cavity, the color-changing member <NUM> can be embedded in the air outlet <NUM>, and a projection area of the color-changing member <NUM> on the air outlet <NUM> is smaller than an area of the air outlet <NUM>, that is, the color-changing member <NUM> does not block the air outlet 301completely. For example, when the air outlet <NUM> is rectangular, the color-changing member <NUM> can be a rectangular structure, which has the same width as the air outlet <NUM> and has a length being less than the length of the air outlet <NUM>. For another example, when the air outlet <NUM> is round or oval, the color-changing member <NUM> can be an annular structure.

Mode three: the color-changing member <NUM> is directly exposed to the cavity as a whole. In an embodiment, the housing <NUM> is made of transparent material such as transparent plastic, and the color-changing member <NUM> is directly fixed on the inner wall of the housing <NUM>.

In the following, the object to be stored being chlorine dioxide slow-release agent <NUM> is still taken as an example. Considering that the temperature in the refrigerator is much lower than the temperature of the external environment, the air with higher external temperature will condense into water vapor after entering the refrigerator during the taking and releasing of the food, which will make the chlorine dioxide slow-release agent <NUM> absorb too much water vapor and continuously produce a large amount of chlorine dioxide gas. This will not only greatly shorten the actual service life of the chlorine dioxide slow-release agent <NUM>, but also affect the user experience and even corrode an inner wall of the refrigerator. In order to slow down the gas exchanging speed of the chlorine dioxide slow-release agent <NUM> and the outside, as shown in <FIG>, the cavity of the housing <NUM> is provided with a first annular rib <NUM>, and the first annular rib <NUM> divides the cavity into an accommodation cavity <NUM> and an annular cavity distributed inside and outside, and the accommodation cavity <NUM> is provided on an inner side of the annular cavity. The first annular rib <NUM> is provided with a first vent hole communicating the accommodation cavity <NUM> with the annular cavity, and the first vent hole is provided separately with the air outlet <NUM>. Since the air outlet <NUM> of the housing <NUM> is provided separately with the first vent hole of the first annular rib <NUM>, whether the external gas flows from the air outlet <NUM> to the accommodation cavity <NUM>, or the chlorine dioxide gas released by the chlorine dioxide slow-release agent <NUM> in the accommodation cavity <NUM> flows from the accommodation cavity <NUM> to the air outlet <NUM>, the above flow paths will not be straight lines, and the gas needs to change a flow direction for a plurality of times, thereby slowing down the gas exchanging speed of the chlorine dioxide slow-release agent <NUM> in the accommodation cavity <NUM> with the outside, and prolonging the service life of the chlorine dioxide slow-release agent <NUM>.

From the above, it should be noted that the chlorine dioxide gas will pass through the accommodation cavity <NUM>, the annular cavity and the air outlet <NUM> during the whole process, so the color-changing member <NUM> can be exposed to any one of the accommodation cavity <NUM>, the annular cavity and the air outlet <NUM>.

In an embodiment, as shown in <FIG>, <FIG>, in order to reduce the flow speed of gas in the annular cavity, the annular cavity is provided with a partition plate <NUM>, and the partition plate <NUM> divides the annular cavity into two buffer cavities distributed in front and back. The partition plate <NUM> is provided with a second vent hole <NUM> communicating two buffer cavities; the accommodation cavity <NUM> is communicated with one of the two buffer cavities through the first vent hole, and another buffer cavity is communicated with the air outlet <NUM>.

In order to facilitate description, the buffer cavity located on the front side in <FIG> is named as the first buffer cavity <NUM>, and the buffer cavity located on the back side is named as the second buffer cavity <NUM>. It is assumed that the accommodation cavity <NUM> is communicated with the first buffer cavity <NUM> through the first vent hole, and the second buffer cavity <NUM> is communicated with the air outlet <NUM>. After the housing <NUM> being put into the refrigerator, the water vapor in the refrigerator will enter the second buffer cavity <NUM> through the air outlet <NUM>. Since the second buffer cavity <NUM> is communicated with the first buffer cavity <NUM> through the second vent hole <NUM>, the water vapor entering the second buffer cavity <NUM> will flow into the first buffer cavity <NUM> through the second vent hole <NUM> from back to front, and then enter the accommodation cavity <NUM> through the first vent hole. The chlorine dioxide slow-release agent <NUM> in the accommodation cavity <NUM> will produce chlorine dioxide gas after absorbing the water vapor entering the accommodation cavity <NUM>. When the chlorine dioxide gas in the accommodation cavity <NUM> reaches a certain amount, the chlorine dioxide gas will enter the first buffer cavity <NUM> through the first vent hole. After the chlorine dioxide gas in the first buffer cavity <NUM> accumulates to a certain amount, it will flow through the second vent hole <NUM> into the second buffer cavity <NUM> from front to back, and finally discharge from the housing <NUM> through the air outlet <NUM> and release into the refrigerator. It should be noted that whether the water vapor in the refrigerator flows from the air outlet <NUM> to the accommodation cavity <NUM>, or the chlorine dioxide gas produced by the chlorine dioxide slow-release agent <NUM> flows from the accommodation cavity <NUM> to the air outlet <NUM>, the two flow paths are nonlinear, and the gas needs to change the flow direction for a plurality of times. Moreover, the speed of the gas flowing between the first buffer cavity <NUM> and the second buffer cavity <NUM> is significantly reduced by the blocking of the partition plate <NUM>.

It should be noted that the cavity <NUM> can also be directly communicated with the second buffer cavity <NUM> through the first vent hole in addition to being directly communicated with the first buffer cavity <NUM> through the first vent hole. In this case, the air outlet <NUM> is communicated with the first buffer cavity <NUM>. The external gas enters the first buffer cavity <NUM> through the air outlet <NUM>, and the external gas accumulated in the first buffer cavity <NUM> flows into the second buffer cavity <NUM> from front to back through the second vent hole <NUM>, and then enters the accommodation cavity <NUM> through the first vent hole. Since the gas generated by the object to be stored in the accommodation cavity <NUM> flows from the accommodation cavity <NUM> to the air outlet <NUM> in the opposite way, it will not be described here.

As shown in <FIG>, the first vent hole is a notch <NUM> formed at a first side edge of the first annular rib <NUM>, the air outlet <NUM> is provided near a second side edge of the first annular rib <NUM>, and the first side edge and the second side edge of the first annular rib <NUM> are located opposite to each other. The advantage of this arrangement is that the front-back distance between the notch <NUM> and the air outlet <NUM> can be maximized, thereby prolonging the flow time of the gas in the two buffer cavities. In addition, in order to further slow down the speed of gas passing through the notch <NUM>, the inner wall of the housing <NUM> facing the notch <NUM> is provided with a baffle plate <NUM> opposite to the notch <NUM>, and the baffle plate <NUM> is located in the accommodation cavity <NUM>. A free end of the baffle plate <NUM> extends towards the second side edge of the first annular rib <NUM>. An extension length of the baffle plate <NUM> is not less than a height of the notch <NUM>. There is a gap <NUM> between a side wall of the baffle plate <NUM> facing the first annular rib <NUM> and the first annular rib <NUM>.

Taking the chlorine dioxide slow-release agent <NUM> as an example still, the buffer cavity on a front side in <FIG> is named as the first buffer cavity <NUM>, and the buffer cavity on a back side is named as the second buffer cavity <NUM>. The notch <NUM> is formed on a front edge of the first annular rib <NUM>, and the first buffer cavity <NUM> is communicated with the accommodation cavity <NUM> through the notch <NUM>. One end of the baffle plate <NUM> is fixed on a front surface of the housing <NUM>, and another end of the baffle plate <NUM> extends backward. The air outlet <NUM> is formed on the outer wall of the housing <NUM> and is close to a back edge of the second annular rib <NUM>. Bing blocked by the baffle plate <NUM>, after the chlorine dioxide gas produced by the chlorine dioxide slow-release agent <NUM> in the accommodation cavity <NUM> reaches a certain amount, the chlorine dioxide gas must first bypass the baffle plate <NUM> and pass through the gap <NUM> between the baffle plate <NUM> and the first annular rib <NUM> to reach the notch <NUM>, and then flow into the first buffer cavity <NUM>. When the chlorine dioxide gas in the first buffer cavity <NUM> accumulates to a certain amount, it will flow through the second vent hole <NUM> into the second buffer cavity <NUM> from front to back, and finally discharge from the housing <NUM> through the air outlet <NUM>. The path of the gas in the external environment to the cavity <NUM> through the air outlet is opposite to the above direction, and will not be described here. It should be noted that whether the gas in the external environment flows from the air outlet <NUM> to the accommodation cavity <NUM>, or the gas generated by the object to be stored in the accommodation cavity <NUM> flows to the air outlet <NUM>, the gas needs to bypass at least two bends, and needs to change the flow direction for a plurality of times, which significantly slows down the speed of gas exchange between the object to be stored in the accommodation cavity <NUM> and the outside, thereby prolonging the service life of the object to be stored.

In addition, as shown in <FIG> and <FIG>, the first side edge of the first annular rib <NUM> can be provided with a plurality of notches <NUM>, and in this case, the baffle plate <NUM> can be an annular plate to facilitate processing. In addition, in order to prevent baffle plate <NUM> from affecting the storage of the object to be stored in the housing <NUM>, the extended length of the baffle plate <NUM> is equal to or slightly greater than the height of the notch <NUM>. In order to better control the gas flow speed, as shown in <FIG>, the height h of the gap <NUM> can be, but not limited to, <NUM> ~ <NUM>, and the width d of the gap <NUM> can be, but not limited to, <NUM> ~ <NUM>.

In addition, considering the housing <NUM> being installed in a vertical direction generally, taking the refrigerator as an example, as shown in <FIG>, the housing <NUM> is usually fixed on a side wall of a drawer <NUM> of the refrigerator. In order to prevent condensations on the food material from directly falling into the air outlet <NUM> of the housing <NUM>, based on the orientation in <FIG>, the air outlet <NUM> can be provided on a left wall, a right wall and/or a bottom surface of the housing <NUM>. That is, in addition to a top surface of the housing <NUM>, the air outlet <NUM> can be provided at anywhere else in the housing <NUM>.

As shown in <FIG>, the housing <NUM> includes a front cover <NUM> and a back cover <NUM>. One side of the back cover <NUM> is an opening, the front cover <NUM> is detachably covered on the opening, and a cavity is formed by being surrounded by the front cover <NUM> and the back cover <NUM>. One side edge of the first annular rib <NUM> is fixed on the back cover <NUM>, and another side edge of the first annular rib <NUM> extends to the front cover <NUM>. Therefore, as shown in <FIG>, after the front cover <NUM> covered on the opening of the back cover <NUM>, and an end surface of the opening of the back cover <NUM> and an end surface of the first annular rib <NUM> extending to the front cover <NUM> close to an inner wall of the front cover <NUM>. Two seals can be formed among the front cover <NUM> and the back cover <NUM>, so that the external gas can be prevented from entering the cavity <NUM> through a seam between the front cover <NUM> and the back cover <NUM>. As shown in <FIG>, the first annular rib <NUM> and the partition plate <NUM> can be integrated with the back cover <NUM> in the case of a partition plate <NUM> being provided in the annular cavity. In order to facilitate the formation of the partition plate <NUM>, an opposite side of the opening on the back cover <NUM> has an annular opening provided relative to the partition plate <NUM>, that is, a side of the second buffer cavity <NUM> back to the first buffer cavity <NUM> in <FIG> is the opening.

It should be noted that there are many modes to realize the detachable connection between the front cover <NUM> and the back cover <NUM>.

Mode one: clamping connection. As shown in <FIG>, <FIG> and <FIG>, a side wall of the annular cavity is provided with a plurality of wedge-shaped protrusions <NUM> A side of the front cover facing the back cover is provided with a plurality of first clamping hooks <NUM> corresponding to the wedge-shaped protrusions <NUM> in one-to-one correspondence. The first clamping hook <NUM> clamps with the corresponding wedge-shaped protrusion <NUM>. As shown in <FIG>, the first clamping hook <NUM> includes a supporting arm and a hook portion. One end of the supporting arm is fixed to the front cover <NUM>, and a side wall of another end of the supporting arm is provided with a hook portion. The supporting arm and the hook portion can be integrally formed. As shown in <FIG>, in order to ensure the smooth clamping of the first clamping hook <NUM> and the wedge-shaped protrusion <NUM>, the range of a height D the hook portion protruding from the supporting arm can be <NUM> ~ <NUM>. In addition, as shown in <FIG> and <FIG>, in the case of the partition plate <NUM> being provided in the annular cavity, in order to ensure that the first clamping hook <NUM> and the wedge-shaped protrusion <NUM> have sufficient clamping space, the wedge-shaped protrusion <NUM> can be provided on a side wall of the buffer cavity away from the front cover <NUM>, and then the partition plate <NUM> is provided with the first clamping hole <NUM> corresponding to the wedge-shaped protrusion <NUM>. When the volatilization device is used, the object to be stored, such as chlorine dioxide slow-release agent <NUM>, is first placed in the accommodation cavity <NUM>; a side of the front cover <NUM> provided with the first clamping hook <NUM> faces the opening of the back cover <NUM>, and the first clamping hook <NUM> passes through the first clamping hole <NUM> and is inserted into the buffer cavity provided with the wedge-shaped protrusion <NUM> (that is, the second buffer cavity <NUM>); finally, it is only necessary to press the front cover <NUM> backwards, the hook portion of the first clamping hook <NUM> slides to the back of the wedge-shaped protrusion <NUM> along a wedge surface corresponding to the wedge-shaped protrusion <NUM> driving by this pressing force, and then the front cover <NUM> can be fixed to the opening of the back cover <NUM>.

Similarly, in order to facilitate the fixation of the volatilization device, as shown in <FIG>, a side of the back cover <NUM> back to the front cover <NUM> is provided with a plurality of second clamping hooks <NUM>. Taking the refrigerator drawer <NUM> as an example, as shown in <FIG>, the side wall of the refrigerator drawer <NUM> can be pre-injected into the second clamping hole <NUM> corresponding to the second clamping hook <NUM> in one-to-one correspondence, and a side wall of the second clamping hole <NUM> can also be provided with a wedge-shaped protrusion for matching with the second clamping hook <NUM>.

Mode two: magnetic attraction. As shown in <FIG>, the front cover <NUM> is provided with a first magnetic member <NUM>, and the back cover <NUM> is provided with a second magnetic member <NUM> engaging with the first magnetic member <NUM>. It should be noted that the side of the front cover <NUM> towards the back cover <NUM> can be provided with a plurality of first magnetic members <NUM>. In this case, the annular cavity is provided with a second magnetic member <NUM> corresponding to the first magnetic member <NUM> in one-to-one correspondence. In order to ensure the airtightness between the front cover <NUM> and the back cover <NUM>, there is at least four first magnetic members <NUM>. The four first magnetic members <NUM> are distributed in four corners of the front cover <NUM>, and the second magnetic member <NUM> is distributed in four corners of the annular cavity. The first magnetic member <NUM> can be, but not limited to, an iron sheet, and the second magnetic member <NUM> can be, but not limit to, a magnet. It should be noted that the positions of the first magnetic member <NUM> and the second magnetic member <NUM> are not limited by the attached figures, and the first magnetic member <NUM> and the second magnetic member <NUM> described here are components that can react to a magnetic field, that is, components that can be attracted or repelled by the magnetic field, such as magnets or components made of magnetic materials.

Similarly, in order to facilitate the fixation of the volatilization device, the side of the back cover <NUM> back to the front cover <NUM> can be fixed with a third magnetic member, and a fourth magnetic member can be fixed on the side wall of the refrigerator drawer <NUM>. The third magnetic member is configured to engage with the fourth magnetic member.

For mode one and mode two, as shown in <FIG> and <FIG>, in order to facilitate the removal of the front cover <NUM> from the back cover <NUM>, an edge of the front cover <NUM> is formed with a force applying member <NUM>, and the force applying member <NUM> is pushed out of the back cover <NUM>. When the front cover <NUM> needs to be removed, the user only need to hold the force applying member <NUM> and pull the front cover <NUM> backward, that is, in a direction away from the back cover <NUM>. The force applying member <NUM> can be provided in a side edge of the front cover <NUM>, to facilitate the user to apply concentrated force on one side. As shown in <FIG>, the height H of the force applying member <NUM> protruding out off the back cover <NUM> is not less than <NUM>, and the width W of the force applying member <NUM> is not less than <NUM>.

Mode three: thread connection. In an embodiment, the edge of the front cover <NUM> bends backwards to form a flanging. An inner wall of the flanging has internal threads, and an outer wall of the back cover <NUM> has external threads matching with the internal threads. When installing the front cover <NUM>, it is only necessary to buckle the front cover <NUM> behind the opening of the back cover <NUM>, and then screw the front cover <NUM>.

Mode four: screw connection. The end surface of the opening of the back cover <NUM> has a plurality of threaded holes, and the front cover <NUM> is provided with a through hole corresponding to the threaded holes. When installing the front cover <NUM>, the front cover <NUM> is first provided on the back cover <NUM>, the through hole of the front cover <NUM> is aligned with the corresponding thread hole, and then a screw is screwed into the corresponding thread hole after passing through the through hole.

In addition, as shown in <FIG>, in order to further prevent the external gas from entering the accommodation cavity <NUM> through the seam between the front cover <NUM> and the back cover <NUM>, the side of the front cover <NUM> facing the back cover <NUM> is provided with a second annular rib <NUM>, the second annular rib <NUM> extends into the annular cavity, and the second annular rib <NUM> closes to a side wall of the back cover <NUM>. Therefore, even if the external gas flows into the seam between the end surfaces of the front cover <NUM> and the back cover <NUM>, since the second annular rib <NUM> closes to the side wall of the back cover <NUM>, it is blocked by the second annular rib <NUM>, and these external gases cannot enter the annular cavity, and then cannot enter the accommodation cavity <NUM>.

As shown in <FIG>, the air outlet <NUM> is formed on the side wall of the back cover <NUM>, and the air outlet <NUM> is located on an edge of the back cover <NUM> away from the front cover <NUM>, to avoid food materials put into the refrigerator from blocking the air outlet <NUM>. The color-changing member <NUM> can be fixed to the front cover <NUM> and/or the air outlet <NUM>. As shown in <FIG>, a left wall, a right wall and a bottom surface of the back cover <NUM> are provided with air outlets <NUM>. The advantage of this arrangement is that it cannot only prevent condensations on the food materials from directly falling into the air outlet <NUM>, but also meet the requirements of the accommodation cavity <NUM> exchanging gas with the outside.

In addition, as shown in <FIG> and <FIG>, in order to facilitate the replacement and fixation of the object to be stored, the side of the front cover <NUM> facing the back cover <NUM> is provided with a plurality of clamping buckles <NUM>, and a placement space for the object to be stored is formed among the plurality of the clamping buckles <NUM>. A free end of the clamping buckle <NUM> bends towards a center of the front cover <NUM> to hold the object to be stored. When it is necessary to replace the object to be stored, such as the chlorine dioxide slow-release agent <NUM>, the user can first remove the front cover <NUM> from the back cover <NUM>, and then remove the chlorine dioxide slow-release agent <NUM> that is previously fixed between the plurality of clamping buckles <NUM>, and then the new chlorine dioxide slow-release agent <NUM> is placed between the plurality of clamping buckle <NUM>, and an edge of the new chlorine dioxide slow-release agent <NUM> is held under the free end of the clamping buckles <NUM>, and finally the front cover <NUM> and the object to be stored are installed on the back cover <NUM> together. During the whole replacement process, the user only needs to remove the front cover <NUM> without removing the entire volatilization device.

As shown in <FIG>, in order to facilitate the installation and positioning of the object to be stored, a third annular rib <NUM> is provided on the side of the front cover <NUM> towards the back cover <NUM>, and a plurality of clamping buckles <NUM> are fixed on the third annular rib <NUM> and provided along a circumferential direction of the third annular rib <NUM> at intervals. In addition, in order to increase the holding force applied to the object to be stored by the clamping buckle <NUM>, a fixed end of the clamping buckle <NUM> and the third annular rib <NUM> can be rotatably connected by a rotating shaft, which is sleeved with a torsion spring. When it is necessary to place object to be stored, the user can first pull up the clamping buckle <NUM>, that is, the clamping buckle <NUM> is rotated along a direction away from the inner wall of the front cover <NUM>; then the object to be stored is placed in an area surrounded by the third annular rib <NUM>; finally, the clamping buckle <NUM> is released. The clamping buckle <NUM> is driven by the torsion spring to rotate towards the inner wall of the front cover <NUM> until the object to be stored are compressed. The third annular rib <NUM> and the baffle plate <NUM> can be a same component.

In addition, the embodiment of the present application further provides a storage device, which includes a box body <NUM> and the volatilization device mentioned above, where the housing <NUM> is fixed in the box body <NUM>. The box body <NUM> can be, but not limited to, a refrigerator, a retail cabinet, a display cabinet or a wardrobe. For example, when the box body <NUM> is a refrigerator, the housing <NUM> can be fixed on an inner wall of a tank or an inner wall of a door body of the refrigerator, or on a side wall of a bottle frame or a drawer <NUM> of the refrigerator.

Claim 1:
A volatilization device, comprising:
a housing (<NUM>), having a cavity, wherein the housing (<NUM>) is provided with an air outlet (<NUM>) communicated with the cavity; and
a color-changing member (<NUM>), fixed to the housing (<NUM>), wherein a side of the color-changing member (<NUM>) is exposed to the cavity, another side of the color-changing member (<NUM>) is visible from an outer wall of the housing (<NUM>), and the color-changing member (<NUM>) changes color according to a concentration of a target gas in the cavity
characterized in that the volatilization device further comprises:
a first annular rib (<NUM>), provided in the cavity to divide the cavity into an accommodation cavity (<NUM>) and an annular cavity distributed inside and outside, wherein the accommodation cavity (<NUM>) is provided on an inner side of the annular cavity, wherein the first annular rib (<NUM>) is provided with a first vent hole communicating the accommodation cavity (<NUM>) with the annular cavity, and the first vent hole is provided separately with the air outlet (<NUM>); and
a partition plate (<NUM>), provided in the annular cavity to divide the annular cavity into two buffer cavities distributed in front and back,
wherein the partition plate (<NUM>) is provided with a second vent hole (<NUM>) communicating the two buffer cavities; and
the accommodation cavity (<NUM>) is communicated with one of the two buffer cavities through the first vent hole, and another of the two buffer cavities is communicated with the air outlet (<NUM>).