A constant temperature storage device for preservative-free masks

Abstract

The utility model discloses a kind of constant-temperature storage devices of preservative-free mask, it relates to cosmetic storage equipment technical field.It includes cuboid constant-temperature box, heating copper sheet, storage frame, cover and the like component, constant-temperature box two sides inner wall embeddedly assembled heating copper sheet, storage frame is adapted to be configured in box, its side wall and bottom are provided with hole, bottom is provided with clamping groove, cover is sealed with constant-temperature box and assembled operating button and warning light.This device is realized even temperature control by symmetrical heating copper sheet, hole guarantees heat transmission, clamping groove positioning mask prevents displacement, double sealing structure maintains constant temperature stability, operating button and warning light improve use convenience.The device solves the problems of uneven temperature, insufficient sealing, disordered positioning and the like of existing storage equipment, can be adapted to home, travel, beauty institution and the like scene, realizes constant temperature, sealing, orderly storage of preservative-free mask, prolongs shelf life and guarantees use effect, simple structure, strong practicality.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic storage equipment technology, specifically to a constant temperature storage device for preservative-free face masks. Background Technology

[0002] In the field of cosmetic storage, temperature-controlled storage devices for preservative-free face masks are specifically designed for these masks. By creating a stable, constant-temperature environment, these devices slow down the degradation of the mask's ingredients and ensure their effectiveness. Their core function is to utilize controllable temperature conditions to address the problem that preservative-free face masks are susceptible to temperature fluctuations under normal conditions due to the lack of preservatives (such as low temperatures causing poor fluidity of the essence and high temperatures accelerating ingredient deterioration). This provides suitable storage conditions, extends shelf life, and maintains the best condition for use.

[0003] Existing devices for storing preservative-free face masks are mostly simple sealed boxes or basic heating boxes. Simple sealed boxes only provide basic sealing and lack active temperature control, relying entirely on the external environment and failing to achieve constant temperature storage. While basic heating boxes have heating elements, they suffer from problems such as unreasonable heating element layout (e.g., uneven temperature distribution due to unilateral heating), lack of dedicated mask positioning structures (masks easily shift when stacked), and lack of precise temperature adjustment components and operating status indicators (low temperature control accuracy and inability for users to visually monitor device status). Furthermore, some devices have rudimentary sealing structures prone to temperature fluctuations and limited power connection options. These shortcomings prevent existing devices from providing a uniform and stable constant temperature storage environment for preservative-free face masks. Masks are prone to shifting and becoming disorganized during storage, temperature regulation is inaccurate, and status is not visible, ultimately affecting the storage effect and user experience of preservative-free face masks, failing to meet users' needs for efficient and precise constant temperature storage. Utility Model Content

[0004] This invention aims to solve the technical problems of existing preservative-free mask storage devices, such as difficulty in accurately controlling temperature, easy displacement and disorder of mask packaging, insufficient sealing of the storage environment leading to temperature fluctuations, lack of intuitive working status indication and convenient temperature adjustment function, which in turn affect the shelf life and effectiveness of the mask.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a constant temperature storage device for preservative-free face masks, comprising a rectangular constant temperature box with an open top and a power interface on its outer side wall. Heating copper plates that are detachably connected to an external power source are embedded in the inner walls on both sides of the constant temperature box. The heating copper plates are electrically connected to the power interface via wires, and the power interface is detachably plugged into the plug of the external power source. There are two heating copper plates, which are symmetrically embedded and fixed in the middle of the left and right side walls of the constant temperature box, and the inner surface of the heating copper plates is flush with the inner wall of the constant temperature box.

[0006] The constant temperature chamber contains a rectangular storage frame. The side walls and bottom of the storage frame are provided with several holes for temperature transmission. The holes are circular through holes, which are evenly distributed on the side walls and bottom of the storage frame, and the diameter of the through holes is 3-8mm. The bottom of the storage frame is provided with several slots for positioning the outer packaging of the mask. The slots are rectangular grooves, which are evenly arranged along the length of the storage frame, and the outline of the rectangular grooves matches the bottom outline of the outer packaging of the mask.

[0007] The storage frame is covered by a lid. The top opening edge of the constant temperature chamber has an annular locking protrusion, and the lower surface of the lid has a corresponding annular locking groove. The annular locking groove and the annular locking protrusion engage to achieve a sealed connection between the lid and the constant temperature chamber. The lower surface edge of the lid has an annular sealing ring, which is sandwiched between the lid and the top opening of the constant temperature chamber to further improve the sealing effect. The upper surface of the lid is equipped with an operation button and an alarm light that are electrically connected to an external power source. The operation button is signal-connected to the heating copper sheet and is used to control the start / stop of the heating copper sheet and temperature adjustment. The operation button includes a power switch button, a temperature increase button, and a temperature decrease button, arranged sequentially along the length of the lid. The alarm light is an LED light; it illuminates when the heating copper sheet is in operation and turns off when the heating copper sheet stops working, indicating the heating status of the constant temperature chamber.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages compared with the prior art:

[0009] This device achieves precise temperature control by symmetrically embedding heating copper plates on the inner walls of both sides of the constant temperature chamber, in conjunction with the temperature adjustment button on the lid. This solves the problem of low temperature control accuracy in existing devices, preventing the masks from spoiling due to excessively high temperatures or affecting the user experience due to excessively low temperatures, and effectively extending the shelf life of preservative-free masks. The rectangular slot at the bottom of the storage frame matches the outline of the mask's outer packaging, providing stable positioning for the mask and preventing it from shifting during storage. This addresses the lack of a dedicated positioning structure in existing devices, improving the orderliness of storage. The evenly distributed circular through holes on the side walls and bottom of the storage frame ensure that the heat generated by the heating copper plates is efficiently and evenly distributed. The material is evenly distributed within the frame, ensuring a uniform temperature throughout the mask's environment and preventing uneven local temperatures. The lid is sealed to the thermostatic chamber via a ring-shaped locking structure, and the addition of a ring-shaped sealing ring significantly improves the airtightness of the storage environment, reduces temperature fluctuations, and further guarantees the thermostatic storage effect. The LED warning light on the lid clearly indicates the device's operating status, allowing users to be aware of the equipment's operation in a timely manner, solving the problem of the lack of status indicators in existing devices and improving ease of use. The thermostatic chamber can be detachably plugged into an external power source via a power interface, offering flexible and convenient connection methods. The well-arranged operation buttons allow users to quickly control start / stop and adjust the temperature, resulting in a better user experience.

[0010] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0011] Figure 1 This is an assembly diagram of a constant temperature storage device for a preservative-free face mask according to the present invention.

[0012] Figure 2 This is an exploded view of a constant temperature storage device for a preservative-free face mask according to the present invention.

[0013] Figure 3 This is a cross-sectional view of the mask storage frame of a constant temperature storage device for preservative-free face masks according to this utility model.

[0014] Figure 4 This is a partially enlarged view of the sealing opening of a constant temperature storage device for a preservative-free face mask according to this utility model.

[0015] Figure 5 This is a schematic diagram of the heating plate and power supply inside the heating chamber of a constant temperature storage device for a preservative-free face mask according to this utility model.

[0016] Figure 6This is a schematic diagram of the bottom slot of the mask storage frame of a constant temperature storage device for preservative-free face masks according to this utility model.

[0017] As shown in the figure:

[0018] 1. Incubator; 2. External power supply; 3. Heating copper sheet; 4. Storage frame; 5. Hole; 6. Card slot; 7. Cover. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] like Figure 1 As shown, the rectangular constant temperature chamber 1 has an open top structure. The storage frame 4 is embedded inside the constant temperature chamber 1 in an adaptive manner, and the inner walls of the two fit together without gaps. The cover 7 is closed on the top opening of the constant temperature chamber 1. The annular locking groove on the lower surface of the cover 7 is precisely matched and locked with the annular locking protrusion on the edge of the top opening of the constant temperature chamber 1. The annular sealing ring on the lower surface edge of the cover 7 is clamped between the two under pressure. The upper surface of the cover 7 is equipped with a power switch button, a temperature increase button, and a temperature decrease button in sequence along the length direction. An LED warning light is installed on the right side of the upper surface. A power interface is provided in the middle of the outer wall of the constant temperature chamber 1, which can be detachably plugged into the external power supply 2.

[0023] The assembly diagram visually presents the overall assembly logic of the device. The core innovation lies in the combined design of a "click-lock seal + integrated operation panel." From an implementation perspective, the precise fit between the click-lock protrusions and grooves ensures ease of assembly, achieving initial sealing without additional fasteners. Combined with the double-sealing structure of the sealing ring, it completely solves the temperature fluctuation problem caused by the inadequate sealing of existing devices, effectively preventing the entry of external air and maintaining the stability of the internal constant temperature environment. The operation buttons and warning lights are centrally located on the upper surface of the cover 7, conforming to ergonomic operating habits and solving the problem of scattered operating parts and inconvenience in existing devices. Users can directly perform start / stop and temperature adjustment operations at the cover, while the warning lights provide a clear indication of the device's operating status, avoiding misoperation due to invisible status. From a problem-solving perspective, the overall assembly structure is compact, and the fitting design between the storage frame 4 and the constant temperature chamber 1 avoids localized temperature dead zones caused by loose assembly, ensuring a uniform temperature environment for the masks. This solves the core problem of preservative-free masks being prone to deterioration due to temperature fluctuations and resulting in a poor user experience, providing a stable constant temperature storage foundation for the masks.

[0024] like Figure 2 As shown, the inner walls of the constant temperature chamber 1 are symmetrically provided with embedded mounting slots in the middle. Two heating copper plates 3 are respectively embedded in the mounting slots and fixed to the inner wall of the constant temperature chamber 1 by bolts. The inner surface of the heating copper plates 3 is flush with the inner wall of the constant temperature chamber 1. The storage frame 4 is an independent cuboid structure with dimensions that are precisely matched to the internal cavity of the constant temperature chamber 1 and can be freely removed and placed. The cover 7 is an independent component with an annular locking groove and an annular sealing ring on the lower surface and an operation button and warning light on the upper surface. The power interface on the outer wall of the constant temperature chamber 1 is electrically connected to the heating copper plates 3 through built-in wires to form an independent power supply circuit.

[0025] The exploded view clearly demonstrates the modular structure design of the device. The key to its implementation lies in the independent disassembly and precise fitting of each component. The embedded symmetrical layout of the heating copper sheet 3 is crucial for temperature uniformity. Compared to the existing device's single-sided heating design, symmetrical heating on both sides creates a symmetrical thermal field inside the constant temperature chamber 1, solving the problem of uneven local temperatures. Simultaneously, the embedded installation prevents the heating copper sheet 3 from protruding from the inner wall, ensuring smooth and interference-free placement and removal of the storage frame 4. The independent design of the storage frame 4 is the core of improved ease of use. Users can directly remove the frame to place face masks without operating within the confined constant temperature chamber, solving the problems of inconvenient face mask placement and easy internal contamination in existing devices. Furthermore, the frame is removable for cleaning, ensuring a hygienic storage environment. The modular disassembly of each component reduces the difficulty of production and assembly. If a component (such as the sealing ring or heating copper sheet) is damaged later, it can be replaced individually without replacing the entire device, reducing operating costs. From the perspective of problem-solving effectiveness, the modular structure ensures the core function of constant temperature storage while also considering ease of use and maintenance costs, addressing the shortcomings of existing devices such as limited functionality and inconvenient maintenance.

[0026] like Figure 3 As shown, the storage frame 4 is a rectangular food-grade PP material structure with several circular holes 5 through its side walls and bottom. The holes 5 are evenly distributed in a matrix, with a center-to-center distance of 10mm between adjacent holes 5 and a diameter of 3-8mm. The slot 6 is a rectangular groove, which is opened on the bottom upper surface of the storage frame 4 and is evenly distributed along the length of the storage frame 4. The groove is 2cm deep and its outline is perfectly matched to the bottom of the preservative-free mask packaging.

[0027] The cross-sectional view visually presents the internal core structure of the storage frame 4. The key to its implementation lies in the collaborative design of "hole heat dissipation + card slot positioning". The uniform through-hole design of the holes 5 is crucial for efficient heat transfer. Existing devices often suffer from heat penetration problems due to the lack of heat dissipation structures in the frame. However, the holes 5 in this device not only ensure air circulation but also allow the heat generated by the heating copper sheet 3 to quickly penetrate the frame and evenly cover the area around each mask, solving the problem of uneven heat distribution and ensuring that all masks are in the same constant temperature environment. The rectangular groove design of the card slot 6 precisely matches the size of the mask's outer packaging, achieving independent positioning of the mask and avoiding the problems of mask stacking, shifting, and squeezing in existing devices. Each mask remains horizontal in its dedicated card slot, ensuring air circulation around the mask and preventing uneven distribution of the essence due to tilting, thus guaranteeing the mask's effectiveness. From the perspective of problem-solving, the storage frame 4, through the structural innovation of holes 5 and slots 6, simultaneously solves the two core problems of "temperature transmission" and "mask positioning". It provides a uniform constant temperature environment for preservative-free masks, ensures orderly storage, extends the shelf life of masks, and improves the user experience.

[0028] like Figure 4 As shown, the cover 7 is made of transparent PC material, with an annular locking groove on the lower edge, and an annular sealing ring of silicone rubber is bonded to the inside of the groove. Three touch-sensitive operation buttons (power switch, temperature increase button, and temperature decrease button) are arranged sequentially along the length of the left side of the upper surface of the cover 7, with an 8mm spacing between adjacent buttons. A red LED warning light is located on the right side of the upper surface of the cover 7. Both the operation buttons and the warning light are electrically connected to the control circuit of the heating copper sheet 3 via built-in wires. The operation buttons are linked to the heating copper sheet 3, and the warning light is linked to the heating copper sheet 3. The copper sheet 3 operates in a linked manner; each injection port is connected to a rubber sealing plate via a horizontally set spring shaft. The rubber sealing plate is made of silicone rubber and its size is perfectly matched to the injection port. Under normal conditions, it tightly covers the injection port under the elastic force of the spring shaft, forming a seal. When a face mask needs to be injected, one side of the rubber sealing plate is pressed, the spring shaft deforms, and the rubber sealing plate flips around the spring shaft to open the injection port. After injection, the pressing is released, the spring shaft returns to its original position, and the rubber sealing plate covers the port again, realizing a quick switch between "injection" and "sealing".

[0029] The enlarged view focuses on the key functional structure of the cap 7, highlighting the integrated design of "dual sealing + precise control + status indication." The annular locking groove and the annular locking protrusion of the constant temperature chamber 1 form a mechanical seal, which, combined with the elastic seal of the sealing ring, constitutes a dual-sealing structure. This solves the problems of poor sealing performance and temperature fluctuations in existing devices, effectively preventing the entry of cold air and maintaining the stability of the internal constant temperature environment. The design of three independent operation buttons achieves functional separation: the power switch controls the start and stop of the device, and the temperature adjustment buttons allow for precise adjustment of the suitable temperature from 30-45℃. This solves the problem of ambiguous temperature adjustment and inability to adapt to the storage needs of face masks in existing devices, allowing users to flexibly set the temperature according to the season and usage habits. The LED warning light is linked to the working status of the heating copper plate 3 in real time, lighting up when working and turning off when stopped. This solves the problem of the lack of status indication in existing devices, making it difficult for users to determine whether the device is working, thus improving ease of use and safety. From the perspective of problem-solving, the sealing cap 7, by integrating sealing, control, and indication functions, not only solves the core problems of sealing and temperature control, but also improves the user experience, making the device operation more intuitive and precise, and meeting users' needs for refined storage of preservative-free face masks.

[0030] like Figure 5 As shown, the two heating copper plates 3 are made of copper and are 2mm thick. They are symmetrically embedded and fixed in the mounting grooves in the middle of the left and right side walls of the constant temperature chamber 1. The inner surface of the heating copper plate 3 is flush with the inner wall of the constant temperature chamber 1. A Type-C power interface is provided in the middle of the outer side wall of the constant temperature chamber 1. The heating copper plate 3 is electrically connected to the power interface through the built-in wire. The power interface and the plug of the external power supply 2 can be detachably plugged in to form an independent power supply circuit.

[0031] This diagram clearly illustrates the core structure of the device's heating and power supply, with the key to its implementation being the "symmetrical heating + convenient power supply" design. The symmetrical layout of the heating copper plates 3 is crucial for achieving uniform temperature inside the constant temperature chamber 1. The copper material boasts high thermal conductivity and stable heating. Compared to the single heating element design of existing devices, the two symmetrical heating copper plates 3 can heat simultaneously, creating a uniform thermal field inside the constant temperature chamber 1. This prevents localized overheating or undercooling, solving the problem of partial deterioration and poor performance of preservative-free masks due to uneven temperature. The embedded installation of the heating copper plates 3, flush with the inner wall, maximizes the heating area while preventing interference between the protruding structure and the storage frame 4, ensuring smooth access to and removal of the storage frame 4. The Type-C power interface design addresses the limitations of existing devices' single power connection method and inconvenience for portability. It is compatible with various external power sources such as chargers and power banks, enhancing the device's flexibility and making it suitable for various scenarios such as home, travel, and small beauty salons. The built-in wiring design avoids exposed wiring, reducing safety hazards and maintaining a clean appearance. From the perspective of its problem-solving effect, this structure solves the problems of low heating efficiency, uneven temperature, and limited application scenarios of existing devices through its efficient heat conduction, uniform heating, and convenient power supply design. It provides a stable and reliable constant temperature heat source for preservative-free face masks, while expanding the applicability of the device.

[0032] like Figure 6 As shown, the card slot 6 is a rectangular groove, which is opened on the bottom upper surface of the storage frame 4. There are 6 slots evenly arranged along the length of the storage frame 4. The distance between adjacent card slots 6 is 2cm. The card slot 6 is 12cm long, 6cm wide and 2cm deep. Its outline is perfectly matched with the bottom outline of the conventional sheet-shaped preservative-free mask packaging. The bottom of the mask packaging can be accurately embedded in the card slot 6 for positioning.

[0033] This diagram focuses on the core positioning structure of the storage frame 4, with the key to its implementation being the design of "precise fit + uniform arrangement". The size of the card slot 6 precisely matches the outer packaging of the mask, achieving point-to-point positioning of the mask. This solves the problems of chaotic mask storage, easy displacement, and stacking and squeezing in existing devices. Each mask is placed independently in its dedicated card slot 6, avoiding friction and collision between masks and reducing the risk of damage to the outer packaging. The card slots 6 are evenly arranged along the length of the storage frame 4, maximizing the use of the bottom space of the storage frame, increasing storage capacity, and making it easy for users to quickly identify and put in the corresponding mask without having to flip or organize it, thus improving ease of use. The card slot 6 is designed with a depth of 2cm, which ensures the stability of the mask positioning, preventing the mask from tipping over due to device movement, while also avoiding inconvenience in putting in and taking out the mask due to excessive depth, thus balancing the positioning effect and the user experience. From the perspective of solving the problem, the Card Slot 6 structure directly addresses the pain point of disordered mask storage in existing devices. Through precise positioning, it ensures that each mask is in a uniform and constant temperature environment, avoiding localized temperature discomfort caused by displacement. At the same time, it ensures the integrity of the mask storage, extends the shelf life, and improves the user's convenience and experience.

[0034] In summary, this device, through the attached Figure 1-6 The corresponding structures work together to address the problems of uneven temperature, insufficient sealing, disordered positioning, inconvenient operation, and invisible status of existing preservative-free mask storage devices from six dimensions: overall assembly, modular disassembly, heat transfer, positioning and fixing, sealing control, and heating power supply. Ultimately, it achieves constant temperature, sealed and orderly storage of masks, extends the shelf life of masks, ensures the effect of use, and has a simple structure, convenient operation and wide applicability.

[0035] Based on the above implementation plan, the following further description is provided according to the specific implementation circumstances:

[0036] I. Daily Temperature-Controlled Storage in the Home (Suitable for Existing Home Power Supply and Cosmetic Storage Environments)

[0037] Currently, most preservative-free face masks in households are stored in ordinary sealed boxes (which only seal without temperature control and are easily affected by seasonal fluctuations due to room temperature) or small household refrigerators (where the temperature is too low, causing the essence to become viscous, and it needs to be taken out and warmed up before use). They lack dedicated temperature-controlled equipment and have poor compatibility with existing dressing table storage and household power supply systems, making it impossible to balance temperature control and ease of use.

[0038] The usage status of this device and details of its interaction with existing technologies:

[0039] 1. Overall installation and power supply linkage: Place the rectangular constant temperature chamber 1 of this device on the existing dressing table or inside a drawer. Utilize the Type-C power interface on the outer wall of the constant temperature chamber 1 to detachably connect to the plug of the existing household 220V power adapter (common for mobile phones and small appliances). No additional power supply line modification is required, and it can be directly adapted to the existing household power supply environment, solving the power supply compatibility problem of dedicated equipment.

[0040] 2. Integration of Mask Placement with Existing Packaging: Remove the storage frame 4 from the constant temperature box 1, and insert the bottom of the existing regular sheet mask (with outer packaging dimensions compatible with the bottom slot 6 of the storage frame) into the rectangular slot 6. The six evenly arranged slots 6 can each position different types of masks, avoiding the problems of mask stacking and shifting or outer packaging damage caused by friction in existing sealed box storage. The storage frame 4 is made of food-grade PP material, which is compatible with existing household food contact-grade storage standards. When taking it out / putting it in, it can be directly placed in the storage compartment of the existing dressing table, adapting to the daily storage habits of families.

[0041] 3. Temperature control operation linked with existing usage habits: The storage frame 4 filled with face masks is embedded inside the constant temperature box 1 (fitting snugly against the inner wall without gaps to prevent shaking). The cover 7 is closed, and the annular locking groove on the lower surface of the cover 7 matches the annular locking protrusion on the top of the constant temperature box 1. The annular sealing ring on the edge of the cover is pressed and fits, consistent with the operating logic of existing household airtight boxes, requiring no additional learning cost. Press the power switch button on the cover 7 (in line with the touch operation habits of existing electronic devices), and preset the temperature to 35℃ (suitable for comfortable daily household use) using the temperature up / down buttons. The operation button is linked with the heating copper plate 3 to adjust the heating power in real time.

[0042] 4. Core Structure Working Status: Two symmetrically embedded heating copper plates 3, fixed to the left and right side walls of the constant temperature chamber 1, generate heat when energized (the copper material has high thermal conductivity, suitable for long-term low-power heat preservation needs in households). The heat is conducted through the air inside the constant temperature chamber 1 and efficiently penetrates through the 3-8mm circular holes 5 evenly distributed on the side walls and bottom of the storage frame 4, creating a uniform constant temperature environment around the mask in each slot 6, solving the problem of excessively low temperature in household mini-fridges; the red LED warning light on the cover 7 remains lit, intuitively indicating that the device is in working status, conforming to the status indication habits of existing household electronic devices and avoiding accidental shutdown; when the temperature reaches the preset value, the heating copper plates 3 automatically cut off power to maintain the temperature, while the warning light remains lit, requiring no manual intervention, and meeting the daily "storage and use" needs of households.

[0043] 5. Integration with existing cleaning tools for subsequent maintenance: After a period of use, the storage frame 4 can be removed separately, and the dust residue in the holes 5 and slots 6 can be rinsed using existing household cleaning tools such as alcohol wipes and water. There is no need to disassemble the main body of the constant temperature box 1, which is suitable for simple household cleaning scenarios and solves the problem of inconvenient cleaning of existing integrated storage devices.

[0044] II. Portable Temperature-Controlled Storage for Travel (Compatible with existing portable power supplies and travel storage devices)

[0045] Preservative-free face masks are often placed in travel cosmetic bags (which lack temperature control and are easily affected by luggage compression and ambient temperature fluctuations). Existing portable storage devices lack compatibility with power banks and are too bulky to carry, failing to meet the storage needs of "small batches, constant temperature, and damage prevention" during travel.

[0046] The usage status of this device and details of its interaction with existing technologies:

[0047] 1. Portable installation and mobile power supply linkage: The thermostat box 1 is designed as a compact cuboid structure of 30cm×20cm×15cm, which can be directly put into the side pocket of an existing 20-inch suitcase or a travel cosmetic bag. The weight is controlled within 1.5kg, which is suitable for travel portability. The Type-C power interface of the thermostat box 1 can be directly plugged into the plugs of existing mainstream power banks (5V / 9V output, compatible with mobile phones and tablets), without the need for special power supply equipment. This solves the pain point of lacking a fixed power source during travel and realizes "constant temperature storage anytime and anywhere".

[0048] 2. Mask positioning and travel damage prevention linkage: Based on the number of travel days, the bottom of the outer packaging of 2-3 preservative-free masks is inserted into the slot 6 of the storage frame 4. The outline of the rectangular groove is precisely matched with the outer packaging of the mask, so even if the suitcase is bumpy and shaken, the mask will not shift or tip over, solving the problems of mask compression deformation and essence leakage in existing travel cosmetic bag storage; the PP material of the storage frame 4 is tough and can withstand slight compression inside the suitcase, which is compatible with the damage prevention needs of existing travel storage.

[0049] 3. Sealing and Temperature Adaptation Linkage: After the cover 7 is closed, the ring-shaped locking structure and the sealing ring form a double seal, preventing outside air from entering the suitcase and avoiding temperature fluctuations. Considering the large temperature differences in the environment during travel (such as low temperatures in winter and high temperatures in summer), the temperature can be adjusted to 38℃ via the operation button on the cover 7. The heating copper sheet 3 adopts a low-power heating mode (power consumption ≤10W), which is compatible with the power bank's battery life. It can work continuously for 4-6 hours without charging, meeting the needs of short trips. The LED warning light indicates the working status in real time. If the power bank is low on power, the heating copper sheet 3 will automatically turn off the power, and the warning light will flash to remind you. This is linked with the existing power bank's low-power protection function to prevent the power supply from being over-discharged.

[0050] 4. Core structure adapted for travel scenarios: The circular holes 5 on the storage frame 4 not only facilitate heat transfer but also reduce the weight of the frame and improve portability; the cover 7 is made of transparent PC material, allowing you to check the remaining number of face masks without opening the cover, meeting the need to quickly check items during travel; the power interface on the outer wall of the constant temperature box 1 adopts an anti-drop design, which is not easy to fall off due to vibration after being plugged into a power bank, solving the problem of unstable power supply during travel.

[0051] III. Bulk Temperature-Controlled Storage in Small Beauty Salons (Suitable for Existing Institutions with Multiple Workstations, Centralized Power Supply, and Dedicated Customer Services)

[0052] In small beauty salons, preservative-free face masks are often stored in open trays (which are prone to contamination and uneven temperature) or in simple heating boxes (with unreasonable heating element layout and no batch positioning structure). These methods are poorly compatible with the salon's existing multi-station makeup tables, centralized power supply system, and sterilization tools, and cannot meet the needs of multiple customers receiving simultaneous treatment, classified management of face masks, and hygienic storage.

[0053] The usage status of this device and details of its interaction with existing technologies:

[0054] 1. Fixed installation and centralized power supply linkage: The constant temperature box 1 is fixed to the side of the multi-station dressing table using the screws or clips of the existing dressing table through the reserved installation holes at the bottom of the constant temperature box 1 (without occupying the operating space). The power interface of the constant temperature box 1 is connected to the existing centralized power supply socket of the institution (compatible with 220V commercial power supply) and linked with the power protection switch of the institution to avoid overload power failure, thus solving the compatibility problem between the special equipment and the institution's power supply system.

[0055] 2. Batch storage and customer-specific management linkage: The six rectangular slots 6 at the bottom of the storage frame 4 can hold different preservative-free masks with different functions (such as moisturizing, soothing, and anti-aging masks), and customer appointment labels are attached to the outer packaging of the masks. It is linked with the institution's existing appointment management system. Staff can quickly identify the corresponding customer's mask through the transparent cover 7 without having to flip through it to find it. The storage frame 4 can be replaced as needed (the institution can be equipped with multiple frames, each corresponding to customers with different appointment times). The removed frames can be placed in the existing ultraviolet disinfection box for disinfection, which meets the institution's hygiene management requirements.

[0056] 3. Temperature control and integrated care process: Based on care needs, staff can preset the temperature to 40℃ using the operation button on the lid 7 (this temperature can enhance the activity of the mask essence and is suitable for use before care). The heating copper plate 3 operates at full power, and the symmetrical layout ensures that the temperature difference around the 6 masks is ≤±1℃, solving the problem of local overheating in existing simple heating boxes; the LED warning light stays on to indicate that the mask is in a constant temperature state, and staff can remove the mask 10 minutes before the customer's care without additional reheating, adapting to the rhythm of the institution's care process.

[0057] 4. Core Structure Adaptation to Mechanism Scenarios: The rectangular structure of the constant temperature box 1 is adapted to the size of the mechanism's dressing table. The embedded heating copper plate 3 is flush with the inner wall, avoiding dirt accumulation and facilitating cleaning with existing mechanism disinfectant wipes. The evenly distributed holes 5 of the storage frame 4 ensure uniform heat penetration during batch storage. At the same time, the holes reduce the contact area between the outer packaging of the mask and the frame, reducing the risk of contamination. The double sealing structure of the lid 7 prevents dust and moisture from entering the mechanism, maintaining the cleanliness of the mask storage environment and aligning with the mechanism's hygiene standards.

[0058] In summary, this utility model, through precise adaptation to existing technologies such as household power supply / storage devices, travel power banks / cosmetic bags, and centralized power supply / sterilization tools in beauty institutions, can solve the problems of temperature fluctuation, disordered positioning, and poor adaptability of existing storage methods in different usage scenarios through the coordinated work of various structures (the constant temperature box provides the installation foundation, the heating copper sheet provides a stable heat source, the storage frame + card slot achieves positioning and storage, the holes ensure heat transmission, and the lid achieves sealing + control + indication integration). It realizes the constant temperature storage needs of "convenience for home use, portability for travel, and batch processing for institutions", without requiring modification of existing equipment, and has strong linkage and wide applicability.

[0059] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A constant-temperature storage device for preservative-free face masks, characterized in that, It includes a rectangular constant temperature box (1), the top of which is open, and heating copper plates (3) that are detachably connected to an external power supply (2) are embedded on the inner walls of both sides. The constant temperature chamber (1) is fitted with a rectangular storage frame (4). The side wall of the storage frame (4) is provided with several holes (5) for temperature transmission. The bottom of the storage frame (4) is provided with several slots (6) for positioning the outer packaging of the mask. A cover (7) is fixedly connected to the top of the storage frame (4). The cover (7) is sealed and engaged with the top opening edge of the constant temperature chamber (1). The upper surface of the cover (7) is equipped with an operation button and a warning light that are electrically connected to an external power supply (2). The operation button is signal connected to the heating copper sheet (3) and is used to control the start and stop of the heating copper sheet (3) and temperature adjustment.

2. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The top opening edge of the constant temperature chamber (1) is provided with an annular locking protrusion, and the lower surface of the cover (7) is provided with an annular locking groove. The annular locking groove and the annular locking protrusion are adapted to engage, so as to achieve a sealed connection between the cover (7) and the constant temperature chamber (1).

3. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The heating copper sheet (3) consists of two pieces, which are symmetrically embedded and fixed in the middle of the left and right side walls of the constant temperature chamber (1), and the inner surface of the heating copper sheet (3) is flush with the inner wall of the constant temperature chamber (1).

4. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The holes (5) on the storage frame (4) are circular through holes. Several circular through holes are evenly distributed on the side wall and bottom of the storage frame (4), and the diameter of the through holes is 3-8mm.

5. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The slot (6) at the bottom of the storage frame (4) is a rectangular groove. Several rectangular grooves are evenly arranged along the length of the storage frame (4), and the outline of the rectangular groove matches the bottom outline of the mask packaging.

6. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The lower surface edge of the cover (7) is provided with an annular sealing ring, which is sandwiched between the cover (7) and the top opening of the constant temperature box (1); the cover (7) is provided with several insertion openings, and a rubber sealing plate is connected to the insertion opening through a spring shaft.

7. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The operation buttons include a power switch button, a temperature increase button, and a temperature decrease button, which are arranged sequentially along the length of the cover (7).

8. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The warning light is an LED light. The warning light is lit when the heating copper sheet (3) is in working condition and is turned off when the heating copper sheet (3) stops working. It is used to indicate the heating status of the constant temperature chamber (1).

9. The constant temperature storage device for preservative-free face masks according to claim 1, characterized in that, The constant temperature chamber (1) is provided with a power interface on its outer side wall. The heating copper sheet (3) is electrically connected to the power interface through a wire. The power interface is detachably plugged into the plug of the external power source (2).

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