Handheld household skin care equipment

Abstract

The utility model relates to the field of handheld household skin care, and provides handheld household skin care equipment which comprises a semiconductor chilling plate, a handheld part and a working part, and the handheld part is used for handheld operation of a user so that the working part can make contact with the skin of the user; the semiconductor chilling plate is used for generating temperature difference between the first surface and the second surface when being started; the working part is in heat-conducting connection with the first surface; the handheld household skin care equipment further comprises a box body and a heat storage material, a closed containing cavity is formed in the box body, the heat storage material is stored in the containing cavity in a power-source-free driving mode, the heat storage material is connected with the second face in a heat conduction mode, and the heat storage material is used for conducting heat exchange with the second face and temporarily storing heat. The handheld household skin care equipment can meet the requirement for efficient heat dissipation under the conditions that the handheld household skin care equipment is simple in structure, small in size and light, and the use convenience of a user is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to handheld domestic skin care field, concretely relates to a handheld domestic skin care equipment. BACKGROUND

[0002] The handheld domestic skin care equipment can be a handheld radio frequency beauty instrument, a handheld massager, a handheld cold / heat compress instrument, etc., and the existing handheld domestic skin care equipment usually uses a semiconductor refrigerating sheet to realize cold compress / heat compress on the skin. During the working process of the semiconductor refrigerating sheet, a cold end and a hot end can be formed. In order to ensure good working performance of the semiconductor refrigerating sheet, heat dissipation needs to be performed on the hot end (or the cold end) during the process of using the cold end (or the hot end) of the semiconductor refrigerating sheet to perform cold compress (or heat compress) on the skin.

[0003] Therefore, some existing technologies use natural ventilation to perform heat dissipation on the hot end / cold end (i.e., the end not used for heat compress / cold compress on the skin) of the semiconductor refrigerating sheet. This method has low heat dissipation efficiency because there is no power source to drive air flow.

[0004] Some other existing technologies use a fan blowing, a pump circulating water, and other heat exchange systems with power sources to perform heat dissipation on the hot end / cold end of the semiconductor refrigerating sheet. For example, the ultrasonic beauty instrument disclosed in Chinese Utility Model Patent No. CN221535477U further sets a wind wheel (fan) to drive air flow on the basis of using natural ventilation, which is beneficial to improving heat dissipation efficiency.

[0005] However, the setting of the power source device such as the wind wheel makes the structure of the handheld domestic skin care equipment more complex, increases the production difficulty and cost, and not only makes it difficult to meet the user's demand for small and light handheld equipment, but also makes it difficult to install the power source device such as the wind wheel and makes it difficult to fully exert the performance of the handheld domestic skin care equipment due to the limitation of the installation space and power of the handheld domestic skin care equipment. Therefore, it is urgent to provide a solution to solve the heat dissipation problem of the end of the semiconductor refrigerating sheet not used for heat compress / cold compress on the skin in the handheld domestic skin care equipment and other portable products. UTILITY MODEL CONTENTS

[0006] One of the purposes of the utility model is to provide a handheld domestic skin care equipment that is beneficial to heat exchange and heat dissipation on the non-acting surface (i.e., the second surface) of the semiconductor refrigerating sheet in the handheld domestic skin care equipment.

[0007] The utility model provides a handheld domestic skin care equipment, including semiconductor refrigerating fin, handheld part and working part, handheld part is used for user handheld operation to make working part contact user skin, semiconductor refrigerating fin is used for generating temperature difference between first surface and second surface when starting, working part and first surface heat conduction connection, handheld domestic skin care equipment still includes box and heat storage material, and the closed containing cavity is formed in the box, and heat storage material is stored in the containing cavity in the form of non power source drive, and heat storage material and second surface heat conduction connection, and heat storage material is used for heat exchange with second surface and is used for temporarily storing heat.

[0008] From the above, compared with the prior art air natural heat exchange mode, the utility model uses heat storage material to exchange heat faster, which is beneficial to improve the heat dissipation efficiency of the second surface.

[0009] And for the domestic skin care equipment, the user generally needs a long time interval (for example, use once a day) after using once, and the time length of each use is short (for example, half an hour), therefore, the amount of heat dissipation required by the semiconductor refrigerating fin for the one end of the skin hot / cold compress is less and predictable during the process of using the handheld domestic skin care equipment by the user each time, and the heat storage material temporarily stores heat, which can meet the heat dissipation demand of the second surface of the semiconductor refrigerating fin; and during the interval after the handheld domestic skin care equipment is used (during non-use), the heat storage material has enough time to exchange heat with the environment, so that the heat temporarily stored by the heat storage material diffuses to the air, and the heat storage material returns to room temperature.

[0010] Therefore, the utility model is more beneficial to meet the efficient heat dissipation demand of the second surface of the semiconductor refrigerating fin.

[0011] In addition, since the utility model uses the form of non power source drive to dissipate heat from the second surface of the semiconductor refrigerating fin, the utility model does not need to use power sources such as fans and pumps and supporting components, which is beneficial to simplify the structure of the handheld domestic skin care equipment of the utility model, reduce production difficulty and cost, reduce the size of the handheld domestic skin care equipment, and maintain the convenience of user use.

[0012] In summary, the utility model is beneficial to meet the heat dissipation demand while maintaining the simple structure, small size and portability of the handheld domestic skin care equipment, and maintaining the convenience of user use.

[0013] In a possible implementation, the box is provided with a heat conduction window, and the semiconductor refrigerating fin is fixedly arranged in the heat conduction window, and the second surface faces the containing cavity.

[0014] From the above, this is beneficial to shorten the heat conduction link from the second surface to the heat storage material, and is beneficial to improve the heat exchange efficiency from the second surface to the heat storage material.

[0015] Further, the second surface is covered with a waterproof structure.

[0016] From the above, the second surface covered with the waterproof structure is directly exposed to the containing cavity, so that when the heat storage material includes liquid material, it is beneficial to avoid the heat storage material from penetrating into the interior of the semiconductor refrigeration sheet.

[0017] In a possible implementation, the second surface is in thermal conductive connection with the heat storage material through a thermal conductive structure; the semiconductor refrigeration sheet is located outside the containing cavity; the box is provided with a thermal conductive window, and the thermal conductive structure is exposed to the containing cavity through the thermal conductive window; or the box constitutes the thermal conductive structure, and the second surface is in thermal conductive connection with the heat storage material through the box.

[0018] Further, the thermal conductive structure has fins, the fins extend into the containing cavity, and the fins are in contact with the heat storage material.

[0019] Further, the thermal conductive structure has a fixed part fixed relative to the second surface, and the fins are movably connected to the fixed part; or the fins are deformably connected to the fixed part.

[0020] From the above, the fins of the thermal conductive structure are movably connected to the fixed part, or the fins of the thermal conductive structure are deformably connected to the fixed part, so that when the handheld household skin care device is shaken, the fins move relative to the heat storage material or deform, which is beneficial to avoid the local overheating / overcooling of the heat storage material affecting the heat exchange efficiency, and is beneficial to further improve the heat exchange efficiency between the heat storage material and the second surface.

[0021] In a possible implementation, the thermal conductive structure and the second surface are in thermal conductive connection through a thermal interface material.

[0022] The thermal interface material has a relatively low thermal resistance, and the thermal interface material arranged on the contact surface can reduce the thermal resistance of the contact surface, which is beneficial to improve the thermal conductive efficiency of the thermal conductive structure and the second surface.

[0023] In a possible implementation, the heat storage material includes liquid material; and / or the heat storage material includes gel-like material; and / or the heat storage material includes solid material; and / or the heat storage material includes phase-changeable material.

[0024] In a possible implementation, the specific heat capacity of the heat storage material is not less than 2000 J / kg·℃.

[0025] From the above, the heat storage material with a large specific heat capacity is used, such heat storage material has good heat storage capacity, and the temperature rises or falls slowly during the heat exchange process of the heat storage material, so that the handheld household skin care device has better heat dissipation capacity for the second surface during use.

[0026] Further, the heat storage material is water.

[0027] Further, the heat storage material is a hydrogel.

[0028] In one possible implementation, the box is detachably arranged.

[0029] Since the box is a detachable component, the box can be detached for heat dissipation after use of the handheld household skin care device, and the box can be in contact with air in a larger area to accelerate heat dissipation efficiency.

[0030] In one possible implementation, at least a part of the box is exposed to the outer surface of the handheld household skin care device.

[0031] As can be seen from the above, by exposing at least a part of the box to the outer surface of the handheld household skin care device, heat dissipation of the heat storage material in the box is accelerated, and heat dissipation efficiency is improved.

[0032] In one possible implementation, the heat storage material completely fills the accommodating cavity.

[0033] Since the heat storage material has good heat storage capacity, the heat storage material fills the accommodating cavity, and in the case of space limitation of the accommodating cavity, more heat can be stored, which is beneficial to improve heat exchange efficiency of the heat storage material on the second surface.

[0034] In one possible implementation, a through hole is formed in the box, and a sealing component is fixed to the box and seals the through hole to form a closed accommodating cavity.

[0035] In one possible implementation, a heat insulation material is arranged between the working part and the box to reduce heat exchange between the heat storage material in the box and the working part.

[0036] As can be seen from the above, by arranging the heat insulation material between the working part and the box, heat exchange between the heat storage material in the box and the working part is reduced, so that temperature interference of the heat storage material on the working part is reduced.

[0037] In one possible implementation, the handheld household skin care device further comprises a temperature sensor, and the temperature sensor is used to detect the temperature of the heat storage material.

[0038] By arranging the temperature sensor, the temperature of the heat storage material can be monitored in time, so that the user can observe during use, and the temperature can also be monitored during shutdown to avoid damage caused by too high temperature during work. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is an exploded view of the handheld household skin care device embodiment of the present application. Figure 1 ;

[0040] Figure 2It is the exploded view of the handheld household skin care equipment embodiment of the utility model Figure 2 ;

[0041] Figure 3 It is the perspective view of the handheld household skin care equipment embodiment one of the utility model;

[0042] Figure 4 It is the perspective view of the handheld household skin care equipment embodiment two of the utility model;

[0043] Figure 5 It is the perspective view of the handheld household skin care equipment embodiment three of the utility model. Specific implementation

[0044] The embodiment of the utility model Figures 1 to 5 Adopt unified space right-angle coordinate system (right hand system), with the relative position relation between the characteristic is expressed, wherein, the first direction is Z axle direction.

[0045] For the convenience of explanation, the household scene of the handheld household care equipment in the utility model embodiment is household care, the general user uses for a short time (such as half an hour each time, about one hour each time) under the household scene, and the general skin care equipment downtime is long, and the use frequency is low (such as using once a day, twice), the general user will not use continuously, for a long time, and high frequency under the household scene as the commercial scene equipment, further, the handheld household care equipment is convenient for user to hold and grab, and its structure is small and light, and the volume is small, the handheld household skin care equipment in the embodiment of the application is taken handheld household cold compress instrument as an example to make specific description, and can be selected, in other embodiments of the utility model, the handheld household skin care equipment can also be handheld household radio frequency beauty instrument, handheld household massage instrument, handheld household hot compress instrument, razor, etc., and the handheld household skin care equipment is not limited here.

[0046] Please refer to Figures 1 to 2 , the handheld household skin care equipment includes shell 1, semiconductor refrigerating sheet 2, box 3, working part 4, heat insulation material 5, power supply 6;Power supply 6, box 3, heat insulation material 5, working part 4 are sequentially arranged along the first direction Z;Wherein, the semiconductor refrigerating sheet 2 can decide whether refrigeration or heating function is realized in the semiconductor refrigerating sheet 2 by changing the polarity of direct current, so that the semiconductor refrigerating sheet 2 generates temperature difference between the first surface 21 and the second surface (not shown in the figure) when starting, and the first surface 21 of the semiconductor refrigerating sheet 2 is in thermal connection with the working part 4, it should be noted that, in the embodiment of the application, the handheld household cold compress instrument is taken as an example, the first surface is the cold end, which can reduce the temperature of the working part to realize the cold compress function, alternatively, in other embodiments, the first surface can also be the hot end, such as hot compress instrument and other equipment that need to raise the temperature of the working part.

[0047] In the embodiment of the present application, the shell 1 is assembled by the front end shell 11, the tail end upper half shell 12 and the tail end lower half shell 13, and the connections of the front end shell 11, the tail end upper half shell 12 and the tail end lower half shell 13 are tightly matched by buckles. Alternatively, in other embodiments of the present application, the connections of the parts of the shell can also be assembled by screw locking or the like, and the shell can also be assembled by only two parts of the upper half shell and the lower half shell. Here, the composition of the shell and the connection mode of each part are not limited.

[0048] In the embodiment of the present application, the semiconductor refrigeration sheet 2, the box body 3, the working part 4 and the heat insulation material 5 are all installed and fixed in the shell 1. The first window 111 is arranged at the end of the front end shell 11 in the first direction Z, and is used to expose the working part 4. Alternatively, in other embodiments of the present application, the first window can also be arranged at other positions of the shell, such as the side wall in the Y-axis direction of the front end shell. Here, it is not limited.

[0049] In the embodiment of the present application, the main material of the shell 1 can be polyethylene (PE). Alternatively, in other embodiments of the present application, the main material of the shell can also be metal, polypropylene (PP), silica gel, stainless steel or polycarbonate (PC). Here, it is not limited.

[0050] The shell 1 has a hand holding part (not shown in the figure), which is used for the user to hold and operate, so that the working part 4 contacts the user's skin. In the embodiment, the hand holding part can be the outer surface part combined by the tail end upper half shell 12 and the tail end lower half shell 13, which can be set according to actual conditions in other embodiments of the present application.

[0051] In the handheld household cold compress instrument, the working part 4 is a cold compress component contacting the user's skin, which is specifically a temperature conduction component, such as sapphire, a cold compress contactor filled with gel, a high-grade TPU polyurethane material, a cold compress bag filled with medium, etc. The temperature of the first surface 21 of the semiconductor refrigeration sheet 2 in thermal conduction connection with the working part 4 can be conducted to the working part 4, and then acts on the user's skin. It should be noted that the working part 4 is used to contact the user's skin to realize the cold compress function or the hot compress function. Here, the specific material of the working part is not limited, and in other embodiments of the present application, when the first surface is a hot end, the working part can also be a hot compress bag filled with medium or the like.

[0052] The power supply 6 is used to supply power to the circuit board (not shown in the figure), so that the circuit board controls the driving of the handheld cold compress instrument. In the embodiment, the power supply 6 can be a rechargeable lithium battery. Alternatively, in other embodiments of the present application, the power supply can also be a replaceable dry battery, which can be set according to requirements. When the power supply 6 is a replaceable dry battery or other replaceable power supply, the shell needs to be provided with a power supply replacement window and a power supply cover.

[0053] In the embodiment, the first surface 21 of the semiconductor refrigeration sheet 2 is in thermal connection with the working part 4, and the second surface is the surface close to the box 3. For the handheld household cold compress instrument, the first surface 21 is the cold end, and the second surface is the hot end. When the semiconductor refrigeration sheet 2 is working, in order to ensure the refrigeration effect of the first surface 21 of the semiconductor refrigeration sheet 2, the second surface needs to be treated for heat conduction and heat dissipation.

[0054] In the embodiment, the handheld household skin care device includes a box 3 and a heat storage material (not shown in the figure). The box 3 is formed with a closed containing cavity (not shown in the figure), and the heat storage material is stored in the containing cavity 3 in a form driven by no power source. The heat storage material is in thermal connection with the second surface, and is used for heat exchange with the second surface and temporary storage of heat.

[0055] The box 3 is used for containing the heat storage material. Specifically, the box 3 is an independent box. Alternatively, in other embodiments, the box can also be part of the shell of the handheld household skin care device. Here, the specific structure of the box is not limited.

[0056] It should be noted that the box 3 is formed with a closed containing cavity. The closed containing cavity can be formed in the box 3 by cooperation of the box 3 and other components, or the shell of the box 3 itself can be a closed structure, and the closed containing cavity is directly formed by the box itself.

[0057] In the embodiment, the box 3 is fixedly arranged in the shell 1. Alternatively, the box can also be a detachable component of the handheld household skin care device. Specifically, the box can be independently detachably arranged, or the box and other components in thermal connection with the box can be detachably arranged together, such as the semiconductor refrigeration sheet and the box being detachably arranged together. After the handheld household skin care device is working, the box can be detached from the device for heat dissipation treatment, thereby improving the heat dissipation efficiency. The box can also be placed in a low-temperature environment, such as a refrigeration box, for heat dissipation, thereby further improving the heat dissipation efficiency. Moreover, when the box is detachably arranged, two boxes with the same specifications can be configured, and the heat storage material is arranged in the box. In this way, when the handheld household skin care device is suddenly used at a high frequency due to special circumstances, the box can be replaced, the heat dissipation time of the box is reduced, and the use convenience of the device is improved.

[0058] It should be noted that the "heat conduction" described in the embodiments of the present application is not for high temperature, but a heat conduction. The "heat dissipation" referred to in the present application includes not only cooling the components with a temperature higher than room temperature, but also heating the components with a temperature lower than room temperature. The second surface heat dissipation includes not only cooling the second surface when it works as a hot end, but also heating the second surface when it works as a cold end. The heat storage material temporarily stores heat, including storing the high temperature of the second surface when it works as a hot end, and storing the low temperature of the second surface when it works as a cold end. Specifically, the handheld household skin care device in other embodiments of the present application can be a handheld household hot compress instrument. At this time, the first surface is a hot end, and the second surface is a cold end. When the semiconductor refrigeration sheet works, in order to ensure the heating effect of the first surface, the low temperature of the second surface needs to be heat-conducted and heat-dissipated to avoid the influence of the low temperature of the second surface on the heating effect of the first surface.

[0059] In the embodiments of the present application, the heat storage material includes liquid material; and / or the heat storage material includes gel material; and / or the heat storage material includes solid material; and / or the heat storage material includes phase-changeable material; specifically, the heat storage material can be liquid material, such as water, glycerol, ethylene glycol, linseed oil, etc., or a mixture of the above-mentioned liquid materials. Optionally, the heat storage material can be gel material, such as hydrogel and other publicly known gel materials with large specific heat capacity prepared by synthesis. Optionally, the heat storage material can be phase-changeable material, such as paraffin and other phase-changeable materials.

[0060] The heat storage material can also be a mixture of multiple different materials. Optionally, the heat storage material can include liquid material and gel material, such as a combination of water and hydrogel. Optionally, the heat storage material can also include a mixture of solid material and other materials. By selecting the heat storage material as a mixture of solid material and other materials, the solid material can be moved with the device when the handheld household skin care device is shaken, which can more easily cause disturbance of the heat storage material, thereby improving the heat exchange efficiency. Specifically, the heat storage material can include liquid material and solid material, such as a combination of water and aluminum-lithium alloy. The heat storage material can include liquid material, gel material and solid material, such as a combination of aluminum-lithium alloy, water and hydrogel. The above specific examples are only for illustration, and do not limit the scope of the present application. Those skilled in the art can select the heat storage material according to the actual situation.

[0061] The heat storage material can be preferably a material with a large specific heat capacity, and specifically, the specific heat capacity of the heat storage material is not less than 2000 J / (kg·℃). For example, the heat storage material is glycerol, water, or a mixed liquid of water and ethylene glycol, etc. The specific heat capacity of water is 4180 J / (kg·℃), which is large and low in cost, and water is preferably used as the heat storage material to reduce the cost of the device while ensuring the heat storage effect of the heat storage material. Moreover, when the heat storage material in the handheld household skin care device is a liquid material, it will shake under the action of the hand, so that the molecules of the heat storage material can flow in the box, which further helps to improve the heat exchange efficiency between the heat storage material and the second surface. The above description is only an example and does not limit the scope of the application. The heat storage material can be set according to the needs of the person skilled in the art.

[0062] Due to the large specific heat capacity of the heat storage material, it can absorb more heat and store heat, thereby dissipating heat from the second surface. During this process, the heat stored in the heat storage material can also slowly dissipate to the outside of the device. In this way, the heat dissipation performance of the device to the second surface is improved while maintaining the small size and portability of the handheld household skin care device.

[0063] Alternatively, in certain cases, a heat storage material with a specific heat capacity less than 2000 J / (kg·℃), such as ethylene glycol, etc., can also be selected. For example, when the second surface is a cold end or the working temperature of the second surface is low during the operation of the handheld household skin care device, a heat storage material with a specific heat capacity less than 2000 J / (kg·℃) can be selected. For another example, when the density of the heat storage material is slightly greater than the material with a specific heat capacity greater than 2000 J / (kg·℃), a heat storage material with a specific heat capacity less than 2000 J / (kg·℃) can also be selected.

[0064] In the embodiment of the present application, the heat insulation material 5 is arranged between the working part 4 and the box 3. The heat insulation material 5 needs to reduce the heat conduction between the working part 4 and the box 3, and can be a heat insulation plate, a fiber-reinforced nanoporous aerogel heat insulation composite material, an aerogel heat insulation material, a GORE heat insulation film, etc. Since the handheld household skin care device needs to be convenient for the user to hold and needs to be light and small, the distance between the components is close due to space limitations, and is easily affected by the temperature of the adjacent components. The working part 4 needs to have a low temperature in the handheld household cold compress instrument, and the temperature of the heat storage material in the box 3 will rise after absorbing the heat of the second surface. By arranging the heat insulation material 5 between the working part 4 and the box 3, the heat conduction between the working part 4 and the box 3 is reduced, and the influence of the heat storage material in the box 3 on the working part 4 after heat storage is avoided.

[0065] Alternatively, the handheld household skin care device in other embodiments of the present application can also not be provided with a heat insulation material, which can be set according to the needs.

[0066] As can be seen from the above, since the handheld home skin care device is targeted at a home scenario, the user generally generates heat for a short time when using the device, and the amount of heat dissipation of the second surface is limited, and the amount of heat dissipation required by the one end of the semiconductor refrigeration sheet for skin hot / cold compress is less and predictable during each use of the handheld home skin care device by the user, by storing the heat storage material in the closed containing cavity in the form of a non-powered source, the heat storage material is in thermal conductive connection with the second surface, the second surface exchanges heat with the heat storage material, and temporarily stores heat, this heat storage mode can meet the heat dissipation requirement of the second surface, and the general shutdown time is relatively long, and the heat storage material can exchange heat with the environment for a long time to realize self-heat dissipation. Compared with the natural air heat exchange mode of the prior art, the heat exchange speed of the heat storage material is faster, which is beneficial to improving the heat dissipation efficiency of the second surface, and since the heat storage material will shake under the action of the hand, it is further beneficial to improve the heat exchange efficiency of the heat storage material and the second surface.

[0067] Moreover, the heat storage passive heat dissipation mode is beneficial to meeting the heat dissipation requirement while maintaining the simple structure, small size and lightness of the handheld home skin care device, and maintaining the convenience of use of the user.

[0068] In the embodiment of the present application, the box body 3 is assembled by an upper half box body 31 and a lower half box body 32, and the upper half box body 31 and the lower half box body 32 are connected by screws 33, wherein the upper half box body 31 and the lower half box body 32 are provided with sealing rubber strips 34 at the matching positions, so as to realize the sealing of the box body 3, prevent the leakage of the heat storage material caused by small gaps due to tooling or process, and form a sealed containing cavity with other components. Alternatively, the upper half box body 31 and the lower half box body 32 in the box body 3 in other embodiments of the present application can also be connected by means of glue, buckle cooperation, etc., and the box body 3 can also adopt an integrally formed box body, which is not limited here.

[0069] In the embodiment of the present application, the main material of the box body 3 can be plastic, metal material, carbon material, ceramic, etc., which is not limited here, and a material with high thermal conductivity is preferably used as the box body to improve the heat dissipation efficiency of the heat storage material after temporary heat storage in the box body.

[0070] Further, the box 3 is provided with a through hole (not shown in the figure), and the sealing component 35 is fixed to the box 3 and seals the through hole to form a closed containing cavity. The sealing component 35 can be a one-time sealing component or a repeatedly openable and closable sealing component. The one-time sealing component cannot be reused after being opened after being sealed by the sealing component, such as a sealing rivet, or a rivet sealing component, or a sealing component formed by melting of a heat sealing material. The repeatedly openable and closable sealing component can be reused by a user through rotation, buckling or the like, such as a threaded rivet matched with the inner wall of the through hole. The user can rotate the threaded rivet to seal the through hole, or when the threaded rivet seals the through hole, the user can rotate the threaded rivet to take out the threaded rivet to open the through hole.

[0071] The heat storage material can be placed into the containing cavity through the through hole. When the box is detachable, the heat storage material can be replaced through the through hole. When the heat storage material is water, the heat storage material storing heat can be replaced, and the handheld household skin care device can be used again in a short time in the case of urgent use. Further, the through hole can also be used for pressure relief. Since gas may be generated when the heat storage material is used for a long time, timely pressure relief treatment through the through hole can prevent adverse effects such as deformation and cracking of the box.

[0072] Alternatively, the through hole can not be provided on the box in other embodiments of the present application. The heat storage material can be first loaded into the lower half box 32 before the box is assembled, and then the upper half box 31 and the lower half box 32 are assembled.

[0073] In the embodiments of the present application, the temperature of the heat storage material can be monitored in time so as to be observed by the user during use, and the temperature can also be monitored during shutdown to avoid damage caused by excessively high temperature during work. A temperature sensor can be further provided to monitor the temperature of the heat storage material. Specifically, the handheld household skin care device further comprises a temperature sensor (not shown in the figure), and the temperature sensor is used to detect the temperature of the heat storage material.

[0074] Further, the heat storage material is in thermal contact with the second surface in the embodiments of the present application. The second surface can be in thermal contact with the heat storage material through a heat conduction structure, or the box can be provided with a heat conduction window, and the second surface faces the box and is in thermal contact with the heat storage material. The way of thermal contact between the second surface and the heat storage material is introduced as follows:

[0075] Reference is made to the accompanying drawings Figure 2 and the accompanying drawings Figure 3The box body is provided with a heat conduction window in the embodiment, the second surface is in heat conduction connection with the heat storage material through a heat conduction structure, and the heat conduction structure extends into the containing cavity through the heat conduction window. Specifically, the box body 3 is provided with a heat conduction window 36, and the heat conduction structure 7 extends into the containing cavity through the heat conduction window 316.

[0076] The main body material of the heat conduction structure 7 is a material with good heat conduction, for example, the main body material of the heat conduction structure can be metal, metal alloy, carbon material, aluminum oxide, silicon carbide or the like.

[0077] Further, the heat conduction structure 7 has a first fin 71 extending into the containing cavity, and the first fin 71 is in contact with the heat storage material. The heat conduction structure 7 can be a heat dissipation fin with a first fin. Alternatively, in other embodiments of the application, the heat conduction structure can also be without a first fin, such as a heat conduction rod.

[0078] Further, the heat storage material can flow on both sides of the first fin, one end of the heat conduction structure 7 extending into the containing cavity is kept away from the inner wall of the box body 3 and does not abut against the inner wall of the box body 3, for example, the end of the heat conduction structure extending into the containing cavity can be located in the middle of the containing cavity. A through hole can also be formed in the fin to allow the heat storage material to flow. The first fin of the heat conduction structure does not block the heat storage material, and the heat storage material can flow in the entire containing cavity. The contact area between the heat conduction structure and the heat storage material is increased, the heat of the second surface can be more efficiently introduced into the heat storage material, and the heat dissipation efficiency of the second surface is improved. Alternatively, the first fin can also separate the containing cavity, and the containing cavity will have multiple chambers after being separated by the first fin. The heat storage materials in different chambers of the containing cavity cannot flow into each other.

[0079] Further, the heat conduction structure 7 and the second surface are in heat conduction connection through a thermal interface material, such as heat-conducting silicone grease, heat-conducting cement, heat-conducting gel or other high-performance thermal interface materials, to reduce the contact thermal resistance.

[0080] Further, to improve the heat storage capacity of the heat storage material, the containing cavity can be completely filled with the heat storage material. Since the specific heat capacity of the heat storage material is higher than that of air, by completely filling the containing cavity with the heat storage material, the air in the containing cavity is reduced, more heat can be stored in a limited space, which is beneficial to improve the heat exchange efficiency of the heat storage material on the second surface. Moreover, filling the containing cavity with the heat storage material can avoid noise caused by the heat storage material shaking in the containing cavity when the equipment shakes.

[0081] Further, when the heat storage material comprises liquid material, at least two immiscible liquids, such as a mixture of water and glycerol, can also be included. When the handheld home skin care device is shaken during use, the positions of the various liquids in the containing cavity will change due to the fact that the heat storage material is composed of multiple immiscible liquids with different densities. Even if the heat storage material fills the containing cavity, the heat storage material can still flow in the containing cavity, which is conducive to improving the heat exchange efficiency between the heat storage material and the second surface.

[0082] In this embodiment, the heat conduction structure 7 comprises a fixed portion 72 fixed relative to the second surface, and the first fins 71 are fixed relative to the fixed portion 71. Alternatively, the first fins can be movable relative to the fixed portion to drive the heat storage material to flow in the containing cavity. That is, the heat conduction structure 7 has a fixed portion 72 fixed relative to the second surface, and the first fins 71 are movably connected to the fixed portion 72 to drive the heat storage material to flow in the containing cavity, or the first fins 71 are deformedly connected to the fixed portion, so that when the handheld home skin care device is shaken during use, the first fins 71 move relative to the heat storage material or deform. This is conducive to avoiding local overheating / overcooling of the heat storage material affecting the heat exchange efficiency, and further improving the heat exchange efficiency between the heat storage material and the second surface.

[0083] It should be noted that the box is provided with a heat conduction window, and the heat conduction structure extends into the containing cavity through the heat conduction window. The connection between the heat conduction structure and the heat conduction window of the box needs to be sealed to form a closed containing cavity. Here, the connection between the heat conduction structure and the heat conduction window of the box can be sealed by a sealing rubber ring, or by welding, or by a hot-pressed plastic part. The sealing method is not limited here.

[0084] As can be seen from the above, the second surface is connected to the heat storage material through the heat conduction structure. Further, the heat conduction structure has fins extending into the containing cavity and in contact with the heat storage material, which increases the contact area between the heat conduction structure and the heat storage material. The heat from the second surface can be more efficiently transferred to the heat storage material, improving the heat conduction and dissipation efficiency of the second surface.

[0085] Referring to FIG. 1, Figure 4 In this embodiment, the box constitutes the heat conduction structure, and the second surface of the semiconductor refrigeration sheet is in heat conduction connection with the heat storage material through the box, i.e., the heat from the second surface can be directly transferred to the heat storage material through the box.

[0086] Specifically, the box 3a directly constitutes the heat conduction structure, and the semiconductor refrigeration sheet 2a is located outside the containing cavity. The second surface (not shown in the figure) is in heat conduction connection with the heat storage material through the box 3a, and the first surface (not shown in the figure) is in heat conduction connection with the working portion 4a. Figure 4 In FIG. 1, the Xa axis, the Ya axis, and the Za axis correspond to the X axis, the Y axis, and the Z axis in the foregoing embodiments, respectively.

[0087] It should be noted that the semiconductor cooling sheet 2a is fixedly connected with the box body 3a in this embodiment. Alternatively, in order to reduce the contact thermal resistance, the semiconductor cooling sheet 2a and the box body 3a can also be connected by coating a thermal interface material, such as thermal silicone grease, thermal cement, thermal gel or other high-performance thermal interface materials.

[0088] It should be noted that the box body 3a constitutes a heat conduction structure, and the main material of the box body 3a needs to be able to conduct heat, such as metal, metal alloy, carbon material, aluminum oxide, silicon carbide, other synthetic materials, etc.

[0089] In this embodiment of the application, the box body 3a has an extended second fin 371a inside, one end of the second fin extending into the heat storage material to accelerate the heat conduction efficiency. Alternatively, in other embodiments of the application, a heat conduction substructure with a second fin, such as a heat conduction fin, can also be welded or connected inside the box.

[0090] Further, in this embodiment, the second fin 371a of the box body 3a extending into the heat storage material is fixed relative to the box body 3a.

[0091] Alternatively, in other embodiments of the application, the second fin 371a can be movably or deformably mounted relative to the box body 3a, so that when the handheld household skin care device is shaken during use, the second fin moves relative to the heat storage material or deforms, which is beneficial to avoid local overheating / cooling of the heat storage material affecting the heat exchange efficiency, and improve the heat exchange efficiency between the heat storage material and the second surface, i.e. the heat conduction structure (i.e. the box body) has a fixed part, the fixed part is fixed relative to the second surface, and the second fin is movably connected to the fixed part, or the second fin is deformably connected to the fixed part to drive the heat storage material to flow in the accommodating cavity. Wherein the fixed part is the shell of the box body, and wherein the second fin moving relative to the fixed part can be rotating or swinging relative to the fixed part.

[0092] Alternatively, in other embodiments of the application, the box body can also not have an extended second fin, which is not limited in scope.

[0093] Further, in order to improve the heat storage capacity and later heat dissipation speed of the heat storage material, further improvement methods are as described in the first embodiment, which are not described here.

[0094] As can be seen from the above, the box body directly constitutes a heat conduction structure, which increases the heat conduction area with the heat storage material, and during the heat conduction of the box body, a part of the heat can be directly dissipated, improving the heat exchange and heat dissipation performance of the second surface of the semiconductor cold end.

[0095] Referring to the drawings Figure 5In the embodiment, the box is provided with a heat conduction window, the semiconductor refrigeration sheet is fixedly arranged on the heat conduction window, and the second surface faces the containing cavity and is in heat conduction connection with the heat storage material. In this way, the heat conduction link from the second surface to the heat storage material is shortened, and the heat exchange efficiency from the second surface to the heat storage material is improved. Specifically, the box 3b is provided with a heat conduction window 36b, the semiconductor refrigeration sheet 2b is fixedly arranged on the heat conduction window 36b, the second surface (not shown in the figure) faces the containing cavity, and the first surface (not shown in the figure) is in heat conduction connection with the working part 4b.

[0096] Further, the second surface is covered with a waterproof structure, and the second surface covered with the waterproof structure is directly exposed in the containing cavity in heat conduction connection with the heat storage material. In this way, when the heat storage material is water, the heat storage material can be prevented from penetrating into the semiconductor refrigeration sheet. Specifically, the waterproof structure is a waterproof layer coated on the second surface, or the waterproof structure is a waterproof component installed between the second surface and the containing cavity.

[0097] It should be noted that, in order to ensure the working performance of the semiconductor refrigeration sheet 2b, the semiconductor refrigeration sheet 2b should have certain sealing and waterproof properties, so as to prevent the heat storage material from penetrating into the internal electrical part through the gap of the second surface, or to prevent the liquid from penetrating into the internal part of the semiconductor refrigeration sheet after long-time contact with the heat storage material.

[0098] Specifically, in the case where the second surface is covered with a waterproof layer, if the heat storage material used has certain corrosiveness, the waterproof coating should have corrosiveness, such as sealing the refrigeration sheet by coating epoxy resin or other waterproof glue. The second surface can also be made of insulating and waterproof material, such as Teflon or other waterproof film. A waterproof component can also be arranged between the second surface and the containing cavity, and the second surface is in heat conduction connection with the heat storage material through the waterproof component. For example, a waterproof shell can be designed for the semiconductor refrigeration sheet. It should be noted that the waterproof shell should have heat conduction capacity and can be made of aluminum. The design of the waterproof shell should ensure that all openings, joints and seams are fully sealed. Appropriate sealing elements and gaskets, such as rubber or silicone gaskets, as well as welding, insert molding and overmolding connection methods can be used to achieve waterproof connection. In this way, the second surface of the semiconductor refrigeration sheet has good waterproof and sealing effect, and the heat storage material cannot enter the electrical part of the semiconductor refrigeration sheet through the structural gap.

[0099] Similarly, the connection between the semiconductor refrigeration sheet 2b and the heat conduction window 36b should be sealed to form a closed containing cavity. The sealing connection between the heat conduction structure and the heat conduction window of the box should not damage the semiconductor refrigeration sheet. Specifically, the sealing connection can be achieved by a sealing rubber ring, or by a hot-pressed plastic part. Figure 5 The Xb axis, Yb axis and Zb axis directions in the box correspond to the X axis, Y axis and Z axis directions in the foregoing embodiments, respectively.

[0100] Further, in order to improve the heat storage capacity of the heat storage material, the heat storage material can completely fill the accommodating cavity, so that more heat can be absorbed in the fixed volume of the accommodating cavity, which can be high-temperature heat or low-temperature heat.

[0101] Further, when the heat storage material includes a liquid material, the heat storage material can include at least two mutually insoluble liquids, such as a mixed liquid of water and glycerol. When the handheld household skin care device is shaken, the heat storage material can flow because the heat storage material is composed of a plurality of mutually insoluble liquids with different densities.

[0102] As can be seen from the above, by opening the heat-conducting window in the box body and directly exposing the second surface of the semiconductor refrigeration sheet to the accommodating cavity, the heat-conducting link from the second surface to the heat storage material is shortened, which is beneficial to improving the heat exchange efficiency from the second surface to the heat storage material.

[0103] Referring to the accompanying Figure 1 to the accompanying Figure 3 In the embodiment of the utility model, the box body 3 is installed inside the shell 1, and after the shell 1 is assembled, the box body 3 is wrapped inside the shell 1, that is, the box body 3 is not exposed to the outer surface of the handheld household skin care device.

[0104] Alternatively, at least a part of the box body can be exposed to the outer surface of the handheld household skin care device. Specifically, a heat dissipation window can be opened on the shell to expose at least a part of the box body to the outer surface of the handheld household skin care device through the heat dissipation window. Alternatively, the box body and the shell can be formed as an integral structure, that is, the box body is one of the components of the shell, so that at least a part of the box body is exposed to the outer surface of the handheld household skin care device. For example, the shell includes a first half shell and a second half shell, the first half shell and the second half shell are combined to form the shell of the handheld skin care device, the first half shell forms the accommodating cavity, so that the first half shell simultaneously serves as the box body to be exposed to the outer surface of the handheld household skin care device. Further, a heat dissipation window can be opened on the second half shell to expose at least a part of the accommodating cavity to the outer surface of the handheld household skin care device through the heat dissipation window.

[0105] In this way, at least a part of the box body is exposed to the outer surface of the handheld household skin care device to accelerate the heat dissipation efficiency of the heat stored in the heat storage material.

[0106] Finally, it should be emphasized that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various changes and modifications, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1.A hand-held home skin care device, comprising a semiconductor refrigeration sheet, a hand-held portion and a working portion, the hand-held portion being used for a user to hold and operate so that the working portion contacts the user's skin; the semiconductor refrigeration sheet being used to generate a temperature difference between a first face and a second face when turned on; the working portion being in thermal contact with the first face; characterized in that: the hand-held home skin care device further comprises a box and a heat storage material, the box is formed with a closed accommodating cavity, the heat storage material is stored in the accommodating cavity in a form of being driven by no power source, the heat storage material is in thermal contact with the second face, the heat storage material is used for heat exchange with the second face and for temporarily storing heat. 2.The hand-held home skin care device according to claim 1, characterized in that: the box is provided with a thermal conductive window, the semiconductor refrigeration sheet is fixedly arranged on the thermal conductive window, and the second face faces the accommodating cavity; and a waterproof structure is arranged on the second face. 3.The hand-held home skin care device according to claim 1, characterized in that: the second face is in thermal contact with the heat storage material through a thermal conductive structure; the semiconductor refrigeration sheet is located outside the accommodating cavity; the box is provided with a thermal conductive window, and the thermal conductive structure is exposed to the accommodating cavity through the thermal conductive window; or the box constitutes the thermal conductive structure, and the second face is in thermal contact with the heat storage material through the box. 4.The hand-held home skin care device according to claim 3, characterized in that: the thermal conductive structure has a fin, the fin extends into the accommodating cavity and is in contact with the heat storage material; the thermal conductive structure has a fixed portion fixed relative to the second face, and the fin is movably connected to the fixed portion; or the fin is deformedly connected to the fixed portion. 5.The hand-held home skin care device according to claim 3, characterized in that: the thermal conductive structure and the second face are connected through a thermal interface material. 6.The hand-held home skin care device according to any one of claims 1 to 5, characterized in that: the heat storage material comprises a liquid material; and / or the heat storage material comprises a gel-like material; and / or the heat storage material comprises a solid material; and / or the heat storage material comprises a phase-changeable material. 7.The hand-held home skin care device according to any one of claims 1 to 5, characterized in that: the specific heat capacity of the heat storage material is not less than 2000 J / kg·℃; the heat storage material is water; or the heat storage material is a hydrogel. 8.The hand-held home skin care device according to any one of claims 1 to 5, characterized in that: the box is detachably arranged. 9.The hand-held home skin care device according to any one of claims 1 to 5, characterized in that: at least a part of the box is exposed to the outer surface of the hand-held home skin care device. 10.The hand-held home skin care device according to any one of claims 1 to 5, characterized in that: the heat storage material completely fills the accommodating cavity. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ A through hole is formed on the box, and a sealing component is fixed on the box and seals the through hole to form a closed containing cavity; Heat insulation material is arranged between the working part and the box to reduce heat exchange between the heat storage material in the box and the working part; The handheld household skin care device further comprises a temperature sensor for detecting the temperature of the heat storage material.

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