CN117608336A

CN117608336A - Skin care device

Info

Publication number: CN117608336A
Application number: CN202311190120.8A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Guangzhou Stars Pulse Co Ltd
Current assignee: Guangzhou Stars Pulse Co Ltd
Priority date: 2023-09-15
Filing date: 2023-09-15
Publication date: 2024-02-27

Abstract

The invention discloses a skin care device, comprising: the nursing component comprises a skin-sticking piece; the heat exchange piece is used for generating temperature change when being electrified, and the heat exchange piece and the skin-contacting piece form heat transfer; the handle comprises a shell and a thermal management assembly, the shell is connected with the nursing assembly, the thermal management assembly is arranged in the shell and is in contact with the heat exchange piece, and the thermal management assembly dissipates heat or dissipates cold to the heat exchange piece through heat exchange with the heat exchange piece; the power supply is used for supplying power to the heat exchange piece; the controller is electrically connected with the power supply and the heat exchange piece and is used for controlling whether the power supply supplies power to the heat exchange piece or not; the temperature change amplitude of the surface temperature of the shell in a single working period of the heat exchange piece is not more than 15 ℃, and the single working period of the heat exchange piece is not more than 30 minutes. The skin care device provided by the embodiment of the invention can effectively control the temperature in the device, and has the advantages of small device temperature change range, no scalding, and low working noise.

Description

Skin care device

Technical Field

The invention relates to the technical field of nursing equipment, in particular to skin nursing equipment.

Background

The skin care device utilizes physical technology, electronic technology, optical technology, etc. to beautify the human body. The development and working modes are divided into: current, electric pulse, micro vibration, light irradiation, body temperature rise, microwaves, vacuum adsorption, laser, ultrasonic waves, water bath, strong light beauty treatment, magnetic field mechanism, radio frequency, electronic introduction, fumigation beauty treatment, pure oxygen penetration and the like, and the application of the skin care equipment is wider along with the higher and higher requirements of people on self beauty treatment in recent years.

When the skin care device is in operation, heat generated by the operation of the electronics of the skin care device can accumulate inside the device, resulting in an increase in the temperature of the device, which can be perceived by a user as scalding the hand.

Disclosure of Invention

The embodiment of the invention provides skin care equipment, which can effectively control the temperature in the equipment and has the advantages of small equipment temperature change range, no scalding, and small working noise.

To achieve the above object, an embodiment of a first aspect of the present invention provides a skin care device comprising: a care assembly comprising a skin patch; the heat exchange piece is used for generating temperature change when being electrified, and the heat exchange piece and the skin-sticking piece form heat transfer; the handle comprises a shell and a thermal management assembly, the shell is connected with the nursing assembly, the thermal management assembly is arranged in the shell and is in contact with the heat exchange piece, and the thermal management assembly performs heat dissipation or cooling on the heat exchange piece through heat exchange with the heat exchange piece; the power supply is used for supplying power to the heat exchange piece; the controller is electrically connected with the power supply and the heat exchange piece and is used for controlling whether the power supply supplies power for the heat exchange piece or not; wherein the temperature change amplitude of the surface temperature of the shell in a single working period of the heat exchange piece is not more than 15 ℃, and the single working period of the heat exchange piece is not more than 30 minutes.

According to a second aspect of the present invention, an embodiment proposes a skin care device comprising: a care assembly comprising a skin patch; the heat exchange piece is used for generating temperature change when being electrified, and the heat exchange piece and the skin-sticking piece form heat transfer; the handle comprises a shell and a thermal management assembly, the shell is connected with the nursing assembly, the thermal management assembly is arranged in the shell and is in contact with the heat exchange piece, and the thermal management assembly performs heat dissipation or cooling on the heat exchange piece through heat exchange with the heat exchange piece; the power supply is used for supplying power to the heat exchange piece; the controller is electrically connected with the power supply and the heat exchange piece and is used for controlling whether the power supply supplies power for the heat exchange piece or not; wherein the thermal management assembly surface temperature varies by no more than 30 ℃ over a single duty cycle of the heat exchange member.

According to a third aspect of the present invention there is provided a skin care device comprising: a care assembly comprising a skin patch; the heat exchange piece is used for generating temperature change when being electrified, and the heat exchange piece and the skin-sticking piece form heat transfer; the handle comprises a shell and a thermal management assembly, the shell is connected with the nursing assembly, the thermal management assembly is arranged in the shell and is in contact with the heat exchange piece, and the thermal management assembly performs heat dissipation or cooling on the heat exchange piece through heat exchange with the heat exchange piece; the power supply is used for supplying power to the heat exchange piece; the controller is electrically connected with the power supply and the heat exchange piece and is used for controlling whether the power supply supplies power for the heat exchange piece or not; and when the temperature of the thermal management assembly does not exceed a preset temperature threshold, the total heat absorption capacity achieved by the thermal management assembly is larger than the total heat production capacity in a single working period of the heat exchange piece.

In some of these embodiments, the surface temperature of the housing varies by no more than 5 ℃ over a single duty cycle of the heat exchange member.

In some of these embodiments, the total heat absorption capacity achieved by the thermal management assembly is greater than the total heat production capacity of the heat exchange member during a single duty cycle when the temperature of the thermal management assembly does not exceed a preset temperature threshold.

In some of these embodiments, the thermal management assembly surface temperature varies by no more than 30 ℃ over a single duty cycle of the heat exchange member; alternatively, the thermal management assembly surface temperature varies by no more than 18 ℃ in a single duty cycle of the heat exchange member.

In some of these embodiments, the thermal management assembly includes a phase change heat absorbing member that absorbs a first heat absorbing amount during a phase change, and absorbs a second heat absorbing amount during a temperature increase, and the total heat absorbing amount includes the first heat absorbing amount and the second heat absorbing amount.

In some of these embodiments, the first heat absorption is greater than the second heat absorption; or, the ratio of the first heat absorption amount to the second heat absorption amount is greater than or equal to 2 and less than or equal to 5.

In some of these embodiments, the phase change heat absorbing member satisfies one of the following conditions: the phase-change heat absorbing piece keeps the phase state unchanged in the phase-change process, and the phase-change heat absorbing piece meets the following conditions: q1=hχm1, wherein Q1 is the first heat absorption amount, H is the enthalpy value of the phase-change heat absorbing member, M1 is the mass of the phase-change heat absorbing member, and M1 is greater than or equal to 10g and less than or equal to 100g; the phase change heat absorbing member changes phase state in the phase change process, the phase change heat absorbing member comprises a heat absorbing shell and phase change materials arranged in the heat absorbing shell, and the phase change heat absorbing member meets the following conditions: q1=hχm2, wherein Q1 is the first heat absorption amount, H is the enthalpy value of the phase-change heat absorbing member, M2 is the mass of the phase-change material, and M2 is greater than or equal to 10g and less than or equal to 100g.

In some of these embodiments, at least a portion of the thermal management assembly is temperature invariant for a portion of the time in a single duty cycle of the heat exchange member.

In some of these embodiments, the thermal management assembly includes a non-phase change heat absorbing member and a phase change heat absorbing member, the non-phase change heat absorbing member being in contact with the heat exchange member and the phase change heat absorbing member; the non-phase-change heat absorbing piece and the phase-change heat absorbing piece are in first contact area, the heat exchanging piece and the non-phase-change heat absorbing piece are in second contact area, and the first contact area is larger than the second contact area.

In some of these embodiments, the ratio of the first contact area to the second contact area is not less than 1.5.

In some of these embodiments, the handle further comprises: and the heat insulation piece is positioned between the surface of the thermal management assembly and the inner surface of the shell and used for blocking the thermal management assembly from exchanging heat with the outer surface of the shell.

In some of these embodiments, the housing comprises: an inner shell, the thermal management assembly being disposed within the inner shell; the outer shell is connected with the nursing component and sleeved on the inner shell; wherein the heat insulator is provided on at least one of an outer surface of the inner case, an inner surface of the inner case, and an inner surface of the outer case.

In some of these embodiments, the handle further comprises: and the heat absorbing member is positioned between the outer surface of the heat insulating member and the inner surface of the shell and is used for absorbing heat transferred from the heat insulating member to the outer surface of the shell.

In some of these embodiments, the skin care device further comprises: the temperature detection device is in electrical contact with the controller and is arranged on the thermal management assembly, the temperature detection device is used for detecting the temperature of the thermal management assembly and feeding back to the controller, and the controller controls the working state of the heat exchange piece according to the temperature detected by the temperature detection device.

In some of these embodiments, the thermal management assembly includes a phase change heat absorbing member and a non-phase change heat absorbing member, the non-phase change heat absorbing member being in contact with the heat exchange member and the phase change heat absorbing member, the non-phase change heat absorbing member having a thermal conductivity greater than a thermal conductivity of the phase change heat absorbing member; the temperature detection device is arranged on the non-phase-change heat absorbing piece.

According to the skin care device disclosed by the embodiment of the invention, the heat management component is in contact with the heat exchange piece, the heat management component is in heat exchange with the heat exchange piece, the heat of the heat exchange piece is transferred into the heat management component so as to dissipate heat or cool the heat exchange piece, and as the heat exchange piece is a device mainly generating heat in the device, the heat of the heat management component is mainly from the heat exchange piece, and by transferring the heat of the heat exchange piece into the heat management component, the heat management component can store part of the heat and can effectively control the temperature in the device; the temperature in the equipment is wholly stable, the heat generated by the heat exchange piece can be prevented from being intensively transferred to the shell in a short time, the heat transfer speed of the heat generated by the heat exchange piece to the shell is slowed down, so that the temperature change amplitude of the surface temperature of the shell in a single working period of the heat exchange piece is not more than 15 ℃, the equipment has the advantages of small temperature change amplitude, no scalding or freezing of hands and the like, the heat exchange piece is cooled by the heat management component, a cooling structure such as a fan is not required to be arranged, the noise generated by the rotation of the fan is eliminated, the heat management component can play a role in cooling without power supply, and the energy consumption is low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a skin care device according to an embodiment of the present invention;

fig. 2 is an exploded view of a skin care device according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a skin care device of an embodiment of the present invention;

fig. 4 is a schematic diagram showing the cooperation of the heat storage member and the heat conduction member of the skin care apparatus according to the embodiment of the present invention;

fig. 5 is a schematic view showing the cooperation of the inner housing, the heat insulator and the heat absorber of the skin care device according to the embodiment of the present invention;

fig. 6 is an enlarged partial schematic view of the area a in fig. 5.

Fig. 7 is a schematic diagram illustrating the cooperation of a phase change heat absorbing member and a non-phase change heat absorbing member of a skin care device according to an embodiment of the present invention.

Fig. 8 is a schematic view showing the cooperation of the heat insulating member and the heat absorbing member of the skin care apparatus according to the embodiment of the present invention.

Reference numerals illustrate:

a skin care device 1,

A care assembly 100,

A heat exchange member 200,

The handle 300, the housing 310, the inner case 311, the outer case 312, the phase change heat absorbing member 320, the non-phase change heat absorbing member 330, the heat insulating member 340, the heat absorbing member 350, and the circuit board 360.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings.

When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with some aspects of the invention as detailed in the accompanying claims.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

Unless defined otherwise, 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 belongs. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The skin care device 1 is a device such as a beauty instrument or a depilatory instrument and is used for performing skin care for a user to realize a beauty effect. The skin care apparatus 1 includes structures such as a care assembly 100, a handle 300, etc., the care assembly 100 is connected to the handle 300, and a user controls a position where a skin attaching member of the care assembly 100 contacts human skin by holding the handle 300, and controls a moving direction of the care assembly 100, the care assembly 100 acts on the user's skin. The heat exchanging member 200 is provided in the nursing assembly 100 or the handle 300, and the heat exchanging member 200 generates temperature change when being electrified, and cools or heats, so that the nursing assembly 100 performs cold or hot compress on the human body.

The skin care apparatus 1 according to an embodiment of the present invention is described below with reference to the drawings.

As shown in fig. 1-3, a skin care device 1 of an embodiment of the present invention comprises a care assembly 100, a heat exchange member 200, a handle 300, a power source, and a controller.

The care assembly 100 includes a skin-contacting member, which may be made of a skin-friendly material such as sapphire, and is adapted to contact with skin of a human body, the heat exchanging member 200 is adapted to generate a temperature change when energized, and the heat exchanging member 200 and the skin-contacting member form a heat transfer, and the handle 300 includes a housing 310 and a thermal management assembly 370, the housing 310 is connected with the care assembly 100, the thermal management assembly 370 is disposed in the housing 310 and contacts the heat exchanging member 200, and the thermal management assembly 370 exchanges heat with the heat exchanging member 200 to dissipate heat or cool the heat exchanging member 200. The power supply is used for supplying power to the heat exchange piece, and the controller is electrically connected with the power supply and the heat exchange piece 200 and used for controlling whether the power supply supplies power to the heat exchange piece 200. Wherein the surface temperature of the housing 310 varies by a temperature of not more than 15 ℃ during a single operation cycle of the heat exchanging member 200, and not more than 30 minutes during a single operation cycle of the heat exchanging member 200, the single operation cycle is a period of time from when the heat exchanging member 200 starts to operate (i.e., when one end of the heat exchanging member 200 in contact with the care assembly 100 starts to cool or heat) to when the heat exchanging member 200 stops to operate (i.e., when one end of the heat exchanging member 200 in contact with the care assembly 100 stops to cool or heat).

For example, the heat exchanging member 200 is a semiconductor refrigerator.

It should be noted that the temperature change of the surface temperature of the housing 310 in a single operation cycle of the heat exchanging element 200 is not greater than 15 ℃, which means that the surface temperature of the housing 310 has an initial temperature when the skin care device 1 is not operated at room temperature (e.g., 20 to 30 ℃) and the difference between the surface temperature of the housing 310 and the initial temperature is not greater than 15 ℃ in 30 minutes (including 30 minutes) when the skin care device 1 is started to operate in at least one mode of the heat exchanging element 200.

According to the skin care apparatus 1 of the embodiment of the present invention, the heat exchanging member 200 is used for generating a temperature change when being electrified, and the heat exchanging member 200 and the skin attaching member form a heat transfer, so that the heat exchanging member 200 can heat or cool the skin attaching member, so that the care assembly 100 can realize cold compress or hot compress on human skin. The handle 300 includes a housing 310, the housing 310 being connected to the care assembly 100, and a user adjusts the direction of the care assembly 100 and the direction of movement by grasping the housing 310 of the handle 300.

In addition, the handle 300 further includes a thermal management assembly 370, wherein the thermal management assembly 370 is disposed in the housing 310 and is in contact with the heat exchange member 200, and the thermal management assembly 370 exchanges heat with the heat exchange member 200 by itself to dissipate heat or cool the heat exchange member 200.

The skin care device 1 of the embodiment of the invention performs heat dissipation and cooling on the heat exchange piece 200 through the heat management component 370, has good heat dissipation effect, stable temperature inside the device and small variation range of the surface temperature of the shell 310. Compared with the skin care equipment with the fan arranged for cooling the heat exchange piece in the prior art, the heat exchange piece has no noise generated by the fan, can realize a mute effect, can play a role in heat dissipation and energy storage without power supply, reduces electric energy loss, and has low energy consumption.

When one end of the heat exchange member 200 facing the nursing assembly 100 is refrigerated, heat of the heat exchange member 200 can be quickly conducted into the heat management assembly 370, so that heat accumulation on the heat exchange member 200 is avoided, refrigeration efficiency of the heat exchange member 200 is guaranteed, and damage to the heat exchange member 200 is avoided.

In addition, since the heat exchange member 200 is a device that mainly generates heat in the apparatus, the heat of the heat management assembly 370 is mainly derived from the heat exchange member 200, and by transferring the heat of the heat exchange member 200 into the heat management assembly 370, the heat management assembly 370 can store a part of the heat, and can effectively control the temperature in the apparatus; the temperature in the equipment is wholly stable, the heat generated by the heat exchange piece 200 can be prevented from being intensively transferred to the shell 310 in a short time, the transfer speed of the heat generated by the heat exchange piece 200 to the shell 310 is slowed down, so that the temperature change amplitude of the surface temperature of the shell 310 in a single working period of the heat exchange piece 200 is not more than 15 ℃, the heat management component 370 can store part of the heat energy transferred by the heat exchange piece 200, after the refrigeration is stopped at one end of the heat exchange piece 200, which faces the nursing component 100, the heat energy stored by the heat management component 370 can be gradually released, the heat energy on the heat management component 370 can not be greatly transferred to the shell 310 in a short time, and the temperature of the shell 310 is prevented from being greatly changed, so that the temperature change of the shell 310 is not great.

In general, the usual ambient temperature of the working environment of the skin care device 1 may be 20 ℃ to 30 ℃, the surface temperature of the housing 310 does not vary by more than 15 ℃, i.e. the surface temperature of the housing 310 of the skin care device 1 reaches 35 ℃ to 45 ℃ at most, most of human skin can receive a temperature below 45 ℃, and thus scalding hands can be effectively avoided. At the same time the temperature of the whole skin care device 1 during operation varies less widely, being comfortable to hold, and the user is easier to adhere to complete a full cycle of skin care.

Thus, the skin care device 1 according to the embodiment of the present invention can effectively control the temperature in the device, and has the advantages of small surface temperature variation of the housing 310, no scalding of hands, and low working noise.

In some embodiments of the present invention, as shown in fig. 1-3, a skin care device 1 of an embodiment of the present invention includes a care assembly 100, a heat exchange member 200, a handle 300, a power source, and a controller.

The care assembly 100 includes a skin-contacting member, which may be made of a skin-friendly material such as sapphire, and is adapted to contact with skin of a human body, the heat exchanging member 200 is adapted to generate a temperature change when energized, and the heat exchanging member 200 and the skin-contacting member form a heat transfer, and the handle 300 includes a housing 310 and a thermal management assembly 370, the housing 310 is connected with the care assembly 100, the thermal management assembly 370 is disposed in the housing 310 and contacts the heat exchanging member 200, and the thermal management assembly 370 exchanges heat with the heat exchanging member 200 to dissipate heat or cool the heat exchanging member 200. The power supply is used for supplying power to the heat exchange piece, and the controller is electrically connected with the power supply and the heat exchange piece 200 and used for controlling whether the power supply supplies power to the heat exchange piece 200. Wherein the surface temperature of the thermal management assembly 370 varies by no more than 30 ℃ during a single operation cycle of the heat exchange member 200, and the single operation cycle of the heat exchange member 200 is no more than 30 minutes, and the single operation cycle is a period of time from when the heat exchange member 200 starts to operate (i.e., when one end of the heat exchange member 200 in contact with the care assembly 100 starts to cool or heat) to when the heat exchange member 200 stops to operate (i.e., when one end of the heat exchange member 200 in contact with the care assembly 100 stops to cool or heat).

For example, the heat exchanging member 200 is a semiconductor refrigerator.

It should be noted that the temperature change of the surface temperature of the housing 310 in a single operation cycle of the heat exchanging element 200 is not greater than 15 ℃, which means that the surface temperature of the housing 310 has an initial temperature when the skin care device 1 is not operated at room temperature (e.g., 20 to 30 ℃) and the difference between the surface temperature of the housing 310 and the initial temperature is not greater than 15 ℃ when the skin care device 1 is not operated, and the skin care device 1 starts to operate in at least one mode of the heat exchanging element 200 within 30 minutes (including 30 minutes).

Typically, the temperature of the environment in which the skin care device 1 is operated may be 20 ℃ to 30 ℃, the temperature of the thermal management assembly 370 does not change by more than 30 ℃, i.e. the temperature of the thermal management assembly 370 reaches 50 ℃ to 60 ℃ at most, at this time, the temperature of the outer surface of the housing 310 is not higher than 45 ℃, and most human skin can accept a temperature of 43 ℃ to 45 ℃ or lower, so that scalding hands can be effectively avoided. At the same time the temperature of the whole skin care device 1 during operation varies less widely, is comfortable to hold, and is easier to adhere to complete a full cycle of skin care.

The care assembly 100 includes a skin-contacting member, which may be made of a skin-friendly material such as sapphire, and is adapted to contact with skin of a human body, the heat exchanging member 200 is adapted to generate a temperature change when energized, and the heat exchanging member 200 and the skin-contacting member form a heat transfer, and the handle 300 includes a housing 310 and a thermal management assembly 370, the housing 310 is connected with the care assembly 100, the thermal management assembly 370 is disposed in the housing 310 and contacts the heat exchanging member 200, and the thermal management assembly 370 exchanges heat with the heat exchanging member 200 to dissipate heat or cool the heat exchanging member 200. The power supply is used for supplying power to the heat exchange piece, and the controller is electrically connected with the power supply and the heat exchange piece 200 and used for controlling whether the power supply supplies power to the heat exchange piece 200. Wherein, when the temperature of the thermal management assembly 370 does not exceed the preset temperature threshold, the total heat absorption capacity achieved by the thermal management assembly 370 is greater than the total heat production capacity of the heat exchange member 200 in a single working cycle, and the single working cycle is not greater than 30 minutes, and the single working cycle is the time period from starting to work (i.e. starting to cool or heat the end of the heat exchange member 200 contacting the care assembly 100) to stopping to work (i.e. stopping to cool or heat the end of the heat exchange member 200 contacting the care assembly 100).

For example, the heat exchanging member 200 is a semiconductor refrigerator.

In addition, when the temperature of the thermal management assembly 370 exceeds a preset temperature threshold, the temperature within the surface handle 300 may be too high, risking scalding.

That is, when the temperature of the thermal management assembly 370 does not exceed the preset temperature threshold, the thermal management assembly 370 is capable of absorbing all heat generated by the heat exchange member 200 in one working cycle, the heat absorbing capacity of the thermal management assembly 370 exceeds the heat generating capacity of the heat exchange member 200 in one working cycle, so that the heat of the heat exchange member 200 diffused to the shell 310 is reduced, the temperature variation range of the surface temperature of the shell 310 in a single working cycle of the heat exchange member 200 is not greater than 15 ℃, the heat absorbing capacity of the thermal management assembly 370 exceeds the heat generating capacity of the heat exchange member 200 in one working cycle, and the temperature variation range of the shell 310 is small.

The surface temperature of the housing 310 varies by no more than 5 c during a single working cycle of the heat exchanger 200, i.e. the surface temperature of the housing 310 of the skin care device 1 reaches at most 25 c to 35 c. In this way, the surface temperature of the housing 310 varies less widely, and does not burn hands.

When the temperature of the thermal management assembly 370 does not exceed the preset temperature threshold, the total heat absorption that the thermal management assembly 370 can achieve is greater than the total heat production during a single duty cycle of the heat exchange member 200. When the temperature of the thermal management component 370 exceeds the preset temperature threshold, the temperature of the whole skin care device 1 will rise rapidly, resulting in the surface of the handle 300 being too high, and the risk of scalding hands exists; meanwhile, the internal temperature of the skin care device 1 is too high, and potential safety hazards of the electric devices can be brought.

That is, when the temperature of the thermal management assembly 370 does not exceed the preset temperature threshold, the thermal management assembly 370 is capable of absorbing all heat generated by the heat exchange member 200 in one working cycle, and the heat absorption of the thermal management assembly 370 exceeds the heat generation amount of the heat exchange member 200 in one working cycle, so that the heat generated by the heat exchange member 200 can be stored in the thermal management assembly 370, thereby reducing the heat of the heat exchange member 200 diffused to the housing 310, ensuring that the temperature variation range of the surface temperature of the housing 310 in a single working cycle of the heat exchange member 200 is not greater than 15 ℃, and being beneficial to ensuring that the temperature variation range of the housing 310 is small.

The temperature of the surface of the thermal management assembly 370 varies by no more than 30 degrees celsius during a single cycle of operation of the heat exchange member 200.

In general, the common environmental temperature of the working environment of the skin care device 1 may be 20 ℃ to 30 ℃, the temperature variation range of the thermal management assembly 370 is not more than 30 ℃, i.e. the temperature of the thermal management assembly 370 is up to 50 ℃ to 60 ℃, and the shell can play a certain role in heat insulation due to the air gap between the thermal management assembly and the shell, so that the temperature of the outer surface of the shell 310 is not higher than 45 ℃ at this time, and most human skin can accept a temperature below 45 ℃, so that the hand scalding can be effectively avoided. At the same time the temperature of the whole skin care device 1 during operation varies less widely, is comfortable to hold, and is easier to adhere to complete a full cycle of skin care.

Further, the temperature of the surface of the thermal management assembly 370 varies by no more than 18 degrees celsius during a single cycle of operation of the heat exchange member 200. Thus, the temperature of the thermal management assembly 370 reaches at most 38-48 ℃, and the housing is thermally insulated to some extent due to the air gap between the thermal management assembly and the housing, so that the temperature of the outer surface of the housing 310 is generally less than 45 ℃, and the temperature variation of the entire skin care device 1 during operation is less, thereby more effectively avoiding scalding hands.

The thermal management assembly 370 includes a phase-change heat absorbing member 320, the phase-change heat absorbing member 320 absorbs a first heat absorbing amount during a phase change process, the thermal management assembly 370 absorbs a second heat absorbing amount during a temperature rising process, and the total heat absorbing amount includes the first heat absorbing amount and the second heat absorbing amount.

For example, the phase-change heat absorbing member 320 is made of a high-efficiency heat absorbing phase-change material using rubber as a carrier, the phase-change heat absorbing member 320 still maintains the current phase state after absorption, and the phase-change material has the advantages of low density, large specific heat capacity, high rebound resilience, high heat absorption value, etc., absorbs heat surge, delays temperature rise, and meets the application requirements of high absorption heat value and long-term reliable heat in a limited space.

When the temperature of the heat exchange member 200 exceeds the phase transition temperature of the thermal management assembly 370, the phase transition heat absorbing member 320 absorbs heat through phase transition, the temperature of the phase transition heat absorbing member 320 is unchanged in the phase transition process, and after all phase transition materials absorbing a large amount of heat to the phase transition heat absorbing member 320 complete the phase transition process, the temperature rise change will only occur after the heat absorption, therefore, the temperature of the phase transition heat absorbing member 320 is kept at a relatively stable temperature all the time in the phase transition process, the temperature change amplitude of the housing 310 is small, and the comfort of the user holding is high.

By dividing the total heat absorption amount of the thermal management assembly 370 into the first heat absorption amount and the second heat absorption amount, the temperature of the phase change heat absorbing member 320 may be almost constant during the phase change of the phase change heat absorbing member 320, so that the temperature variation amplitude of the housing 310 is small during the entire heat absorption of the thermal management assembly 370.

The first heat absorption amount is greater than the second heat absorption amount, that is, the first heat absorption amount absorbed during the phase transition of the phase transition heat absorbing member 320 occupies the dominant factor in the total heat absorption amount of the thermal management assembly 370, so that the proportion of the second heat absorption amount can be reduced, the temperature rising amplitude of the thermal management assembly 370 during the absorption process can be reduced, the influence of the heat absorption amount of the thermal management assembly 370 on the housing 310 can be reduced, and the temperature variation amplitude of the housing 310 is small.

The ratio of the first heat absorption amount to the second heat absorption amount is greater than or equal to 2 and less than or equal to 5. For example, the ratio of the first heat absorption amount to the second heat absorption amount is 2, 2.5, 3, 3.5, 4, 4.5, or 5.

When the ratio of the first heat absorption amount to the second heat absorption amount is smaller than 2, the difference between the first heat absorption amount and the second heat absorption amount is not obvious, the first heat absorption amount cannot occupy the dominant factor in the heat absorption of the thermal management assembly 370, the influence of the heat absorption amount of the thermal management assembly 370 on the shell 310 cannot be effectively reduced, and the difference between the first heat absorption amount and the second heat absorption amount is obvious by making the ratio of the first heat absorption amount to the second heat absorption amount not smaller than 2, so that the first heat absorption amount occupies the dominant factor in the heat absorption of the thermal management assembly 370, and the influence of the heat absorption amount of the thermal management assembly 370 on the shell 310 can be obviously reduced.

When the ratio of the first heat absorption amount to the second heat absorption amount is greater than 5, the required heat management component 370 has more mass of the phase change material, which increases the cost, and by making the ratio of the first heat absorption amount to the second heat absorption amount not greater than 5, the mass of the phase change heat absorbing member 320 can be correspondingly reduced, thereby reducing the cost.

The thermal management assembly 370 includes a phase change heat absorbing member 320, the phase change heat absorbing member 320 satisfying one of the following conditions:

The phase change heat absorbing member 320 maintains a phase state unchanged during the phase change, the phase change heat absorbing member 320 remains a solid state during the phase change, and the phase change heat absorbing member 320 satisfies: q1=hχm1, where Q1 is the first heat absorption amount, H is the enthalpy value of the phase-change heat absorbing member, M1 is the mass of the phase-change heat absorbing member 370, and M1 is greater than or equal to 10g and less than or equal to 100g. In this way, the mass of the phase-change heat absorbing member 320 is not less than 10g, which can increase the specific gravity of the first heat absorbing amount in the total heat absorbing amount, reduce the temperature variation range of the thermal management assembly 370 in the process of absorbing heat, and the mass of the phase-change heat absorbing member 320 is not more than 100g, thereby reducing the cost.

The phase change heat absorbing member 320 changes phase during the phase change process, the phase change heat absorbing member 370 includes a heat absorbing shell and a phase change material disposed in the heat absorbing shell, the phase change material is made of at least one of a solid-liquid phase change material, a solid-gas phase change material and a liquid-gas phase change material, the heat conducting shell can define a position of the phase change material to prevent the phase change material from diffusing in the shell 310 when being converted into a gas state or a liquid state, and the phase change heat absorbing member 370 satisfies: q1=hχm2, where Q1 is the first heat absorption amount, H is the enthalpy value of the phase-change heat absorbing member 370, M2 is the mass of the phase-change material, and M2 is greater than or equal to 10g and less than or equal to 100g.

In this way, the mass of the phase-change material in the phase-change heat absorbing member 320 is not less than 10g, which can increase the proportion of the first heat absorbing amount in the total heat absorbing amount, reduce the temperature variation range of the thermal management assembly 370 in the process of absorbing heat, and the mass of the phase-change material in the phase-change heat absorbing member 320 is not more than 100g, thereby reducing the cost.

At least a portion of the thermal management assembly 370 is temperature-invariant during a portion of a single cycle of operation of the heat exchange member 200, the thermal management assembly 370 includes a phase change heat sink 320, and the thermal management assembly 370 is the phase change heat sink 320, wherein the phase change heat sink 320 is temperature-invariant during the phase change. In this way, the phase-change heat absorbing member 320 can absorb heat of the heat exchanging member 200 during the phase-change process, and the temperature of the phase-change heat absorbing member 320 is not increased, so that the temperature of the housing 310 is prevented from being increased due to the phase-change heat absorption of the phase-change heat absorbing member 320.

The thermal management assembly 370 includes a non-phase-change heat absorbing member 330 and a phase-change heat absorbing member 320, wherein the non-phase-change heat absorbing member 330 is in contact with the heat exchanging member 200 and the phase-change heat absorbing member 320, a first contact area is between the non-phase-change heat absorbing member 330 and the phase-change heat absorbing member 320, and a second contact area is between the heat exchanging member 200 and the non-phase-change heat absorbing member 330, and the first contact area is larger than the second contact area.

The second heat absorption amount includes heat absorbed by the phase change heat absorbing member 320 and heat absorbed by the non-phase change heat absorbing member 330. The non-phase-change heat absorbing member 330 is made of a metal material or a heat conductive plastic, for example, the non-phase-change heat absorbing member 330 may be made of an aluminum material. The non-phase-change heat absorbing member 330 does not undergo a phase change after absorbing heat, and absorbs heat mainly by heating up.

When one end of the heat exchange member 200 facing the nursing assembly 100 is refrigerated, the non-phase-change heat absorbing member 330 can rapidly conduct heat of the heat exchange member 200 to the phase-change heat absorbing member 320, so that heat accumulation on the heat exchange member 200 is avoided, refrigeration efficiency of the heat exchange member 200 is ensured, and damage to the heat exchange member 200 is avoided.

The heat of the non-phase-change heat absorbing member 330 is transferred to the phase-change heat absorbing member 320, and the phase-change heat absorbing member 320 can store the heat energy transferred from the non-phase-change heat absorbing member 330, that is, when the temperature of the non-phase-change heat absorbing member 330 is higher than the temperature of the phase-change heat absorbing member 320, the phase-change heat absorbing member 320 can absorb the heat of the non-phase-change heat absorbing member 330 by increasing the temperature or generating a phase change or the like so as to reduce the temperature of the non-phase-change heat absorbing member 330.

After the end of the heat exchange member 200 facing the care assembly 100 stops cooling, the temperature of the non-phase-change heat absorbing member 330 gradually decreases, and the heat energy stored in the phase-change heat absorbing member 320 gradually releases into the housing 310, so as to change the temperature of the housing 310 by a small margin, so that the heat energy on the non-phase-change heat absorbing member 330 is not largely conducted to the housing 310 in a short time, and the temperature change range of the housing 310 is small.

The care component 100 of the household skin care apparatus is generally smaller in size, and thus is limited by the size of the care component 100, the volume of the heat exchanging member 200 is also smaller, the non-phase change heat absorbing member 330 is preferably made of a material having a large heat conductivity coefficient by using the non-phase change heat absorbing member 330 to conduct and diffuse the heat of the heat exchanging member 200, and thus the heat can be rapidly conducted from the heat exchanging member 200 to the non-phase change heat absorbing member 330, and the heat exchanging efficiency between the non-phase change heat absorbing member 330 and the heat exchanging member 200 is relatively high due to the large heat conductivity coefficient of the non-phase change heat absorbing member 330 and the large temperature difference between the heat exchanging member 200 and the non-phase change heat absorbing member 330 in most cases. The first contact area is the heat exchange area between the non-phase-change heat absorbing member 330 and the phase-change heat absorbing member 320, the second contact area is the heat exchange area between the heat exchanging member 200 and the non-phase-change heat absorbing member 330, the heat exchange area between the phase-change heat absorbing member 320 and the non-phase-change heat absorbing member 330 is larger than the heat exchange area between the heat exchanging member 200 and the non-phase-change heat absorbing member 330, more areas are reserved between the phase-change heat absorbing member 320 and the non-phase-change heat absorbing member 330, heat exchange efficiency between the phase-change heat absorbing member 320 and the non-phase-change heat absorbing member 330 is improved by increasing the first contact area, and the phase-change heat absorbing member 320 can absorb heat on the non-phase-change heat absorbing member 330 more rapidly, so that heat balance of the skin care device is realized. On one hand, the heat quantity diffused into the equipment by the non-phase-change heat absorbing member 330 is reduced, the temperature rise in the equipment is slowed down, the temperature change range of the surface of the shell 310 is small, the hand is not scalded, and on the other hand, a larger temperature difference is kept between the non-phase-change heat absorbing member 330 and the heat exchanging member 200, so that the heat of the heat exchanging member 200 can be transferred to the non-phase-change heat absorbing member 330 more quickly, and the heat dissipation efficiency of the heat exchanging member 200 is increased.

The heat absorbing member 320 stores the heat of the non-phase-change heat absorbing member 330, so that when the temperature of the non-phase-change heat absorbing member 330 exceeds the phase change value of the heat absorbing member 320, the heat of the non-phase-change heat absorbing member 330 is not fully transferred to the housing 310, and the rapid temperature rise of the housing 310 is not caused; when the temperature of the non-phase-change heat absorbing member 330 is lower than the phase change value of the phase-change heat absorbing member 320, the heat stored in the phase-change heat absorbing member 320 is slowly released, and the heat of the phase-change heat absorbing member 320 is not accumulated in the housing 310 in a short time because the time of releasing the heat by the phase-change heat absorbing member 320 is long, the surface temperature of the housing 310 is not increased drastically, and thus it can be ensured that the temperature variation amplitude of the surface temperature of the housing 310 in a single working cycle of the heat exchanging member 200 is not more than 15 ℃.

In some embodiments of the invention, the ratio of the first contact area to the second contact area is not less than 1.5. For example, the ratio of the first contact area to the second contact area is 1.5, 1.6, 1.7, 1.8, 1.9 or 2.

When the ratio of the first contact area to the second contact area is smaller than 1.5, the first contact area is relatively close to the second contact area, and the heat exchange efficiency between the phase change heat absorbing member 320 and the non-phase change heat absorbing member 330 is not far greater than the heat exchange efficiency between the heat exchanging member 200 and the non-phase change heat absorbing member 330, so that heat accumulation may exist on the non-phase change heat absorbing member 330, the speed of the non-phase change heat absorbing member 330 absorbing the heat of the heat exchanging member 200 is affected, the working efficiency of the heat exchanging member 200 is affected, and the internal temperature of the device is rapidly increased.

Therefore, the difference between the first contact area and the second contact area is more obvious, the heat absorption efficiency of the phase-change heat absorption member 320 to the non-phase-change heat absorption member 330 can be increased, the temperature of the non-phase-change heat absorption member 330 is effectively reduced, and the non-phase-change heat absorption member 330 can more effectively absorb heat on the heat exchange member 200.

The handle 300 further includes a thermal shield 340, as shown in fig. 2-3, 5, 6 and 8, the thermal shield 340 being positioned between the outer surface of the thermal management assembly 370 and the inner surface of the housing 310 for blocking the thermal management assembly 370 from transferring heat to the outer surface of the housing 310, i.e., for blocking the thermal management assembly 370 from exchanging heat with the outer surface of the housing 310.

Through setting up thermal-insulated piece 340, can separate thermal management subassembly 370 to shell 310's surface transfer heat, avoid shell 310's surface temperature to receive shell 310 inside temperature's influence to be favorable to guaranteeing that shell 310's surface temperature keeps in a scope that is suitable for the people to hold, optimize user's use experience. Also, by providing the thermal shield 340, the thermal management assembly 370 is blocked from transferring heat to the outer surface of the housing 310, which is advantageous in ensuring that the surface temperature of the housing 310 does not vary by more than 15 degrees celsius during a single cycle of operation of the heat exchange member 200.

The housing 310 of the skin care device 1 further comprises an inner housing 311 and an outer housing 312, as shown in fig. 2, 5 and 6, the thermal management assembly 370 is disposed in the inner housing 311, the outer housing 312 is connected with the care assembly 100 and is sleeved on the inner housing 311, wherein the heat insulator 340 is disposed on at least one of an outer surface of the inner housing 311, an outer surface of the thermal management assembly 370, an inner surface of the inner housing 311 and an inner surface of the outer housing 312.

That is, the heat insulating member 340 is coupled to the outer surface of the inner case 311, or the heat insulating member 340 is coupled to the inner surface of the outer case 312, or the heat insulating member 340 is coupled to the outer surface of the thermal management assembly 370, or the heat insulating member 340 is coupled to both the outer surface of the inner case 311 and the inner surface of the outer case 312.

In this way, the heat insulating member 340 is provided in a more varied manner, which is advantageous in that the skin care device 1 can be adapted to different use environments.

The handle 300 further includes a heat absorbing member 350, as shown in fig. 2, 5, 6, and 8, the heat absorbing member 350 is positioned between the outer surface of the heat insulating member 340 and the inner surface of the housing 312, for absorbing heat transferred from the heat insulating member 340 to the outer surface of the housing 310.

Through setting up heat absorbing member 350, can absorb the heat of insulating member 340, when the temperature of equipment reduces, heat absorbing member 350 slowly releases away its absorptive heat again to guarantee that casing 310's temperature can not gather in the short time, avoid casing 310's temperature to rise fast, guarantee the travelling comfort of gripping. And, by providing the heat absorbing member 350, the heat of the heat insulating member 340 is absorbed, and the heat insulating member 340 is prevented from transferring heat to the outer surface of the housing 310, which is beneficial to ensuring that the temperature variation amplitude of the surface temperature of the housing 310 in a single working cycle of the heat exchanging member 200 is not more than 15 ℃.

In some embodiments of the invention, the skin care device 1 further comprises a temperature detection means and a controller.

The thermal management assembly 370 is connected with a temperature detection device, the temperature detection device is used for detecting the temperature of the thermal management assembly 370, a controller is respectively connected with the temperature detection device and the heat exchange piece 200, and the controller controls the working state of the heat exchange piece 200 according to the temperature fed back by the temperature detection device.

The working states of the heat exchange member 200 include: the start and stop of the heat exchange member 200, the increase and decrease of the power of the heat exchange member 200, the cooling or heating of the end of the heat exchange member 200 toward the thermal management assembly 370.

The temperature of the heat management assembly 370 can be quickly, directly and accurately detected by the temperature detection device, and the controller can manage the working state of the heat exchange member 200 according to the temperature of the heat management assembly 370 detected by the temperature detection device, for example, the controller can adjust the power of the heat exchange member 200 and switch the heating or cooling of one end of the heat exchange member 200 facing the care assembly 100 so as to control the temperature in the handle 300, can keep the handle 300 in a more reliable temperature range, prevent the handle 300 from supercooling or overheating, and ensure the holding experience.

The thermal management assembly 370 is a major component of the skin care device 1, and the temperature of the thermal management assembly 370 has a large influence on the temperature inside the skin care device 1 and the housing 310. Compared with the temperature detection device used for detecting the temperature of other positions of the handle 300, the temperature detection device detects the temperature of the thermal management component 370, so that the device temperature can be obtained more timely and accurately, the temperature of the device inside and the temperature of the shell 310 can be further managed, and the technical effects that hands cannot be scalded and the surface temperature of the shell 310 is not greatly changed are achieved. The temperature of the outer surface of the housing 310 may be lower than the temperature of the thermal management assembly 370, and when the temperature of the thermal management assembly 370 reaches a preset temperature, the temperature of the outer surface of the housing 310 is far lower than the preset temperature, so that hands are not scalded. Detecting the temperature of the thermal management assembly 370 can timely and accurately predict the temperature variation trend of the outer surface of the housing 310, and through controlling the heat exchange member 200, the temperature variation amplitude of the outer surface of the housing 310 can be reduced.

The thermal management assembly 370 includes a phase-change heat absorbing member 320 and a non-phase-change heat absorbing member 330, wherein the non-phase-change heat absorbing member 330 is in contact with the heat exchanging member 200 and the phase-change heat absorbing member 320, and the thermal conductivity of the non-phase-change heat absorbing member 330 is greater than that of the phase-change heat absorbing member 320, and the temperature detecting device is disposed on the non-phase-change heat absorbing member 330. For example, the non-phase change heat absorbing member 330 is metal, such as aluminum, or the non-phase change heat absorbing member 330 is a thermally conductive plastic. The non-phase-change heat absorbing member 330 has a relatively high heat conductivity, and the non-phase-change heat absorbing member 330 is in contact with the heat exchanging member 200, so that the heat exchanging efficiency between the non-phase-change heat absorbing member 330 and the heat exchanging member 200 is high, and the heat conduction of the non-phase-change heat absorbing member 330 is fast, so that the test timeliness is good.

For example, the skin care device 1 includes a circuit board 360, the controller is inherited to the circuit board 360, at least a portion of the circuit board 360 is located on the handle 300, and the phase-change heat absorbing member 320 is located between the non-phase-change heat absorbing member 330 and at least a portion of the circuit board 360, so as to avoid heat of the non-phase-change heat absorbing member 330 being intensively transferred to the circuit board 360 in a short time, avoid the circuit board 360 from heating up too fast and heat being intensively, and ensure the usability.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limiting the present invention, and specific meanings of the terms described above may be understood by those of ordinary skill in the art according to specific circumstances.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A skin care device, comprising:

a care assembly comprising a skin patch;

the heat exchange piece is used for generating temperature change when being electrified, and the heat exchange piece and the skin-sticking piece form heat transfer;

the handle comprises a shell and a thermal management assembly, the shell is connected with the nursing assembly, the thermal management assembly is arranged in the shell and is in contact with the heat exchange piece, and the thermal management assembly performs heat dissipation or cooling on the heat exchange piece through heat exchange with the heat exchange piece;

the power supply is used for supplying power to the heat exchange piece; and

the controller is electrically connected with the power supply and the heat exchange piece and is used for controlling whether the power supply supplies power for the heat exchange piece or not;

wherein the temperature change amplitude of the surface temperature of the shell in a single working period of the heat exchange piece is not more than 15 ℃, and the single working period of the heat exchange piece is not more than 30 minutes.

2. A skin care device, comprising:

a care assembly comprising a skin patch;

the power supply is used for supplying power to the heat exchange piece; and

wherein the temperature change amplitude of the surface temperature of the thermal management component in a single working period of the heat exchange piece is not more than 30 ℃, and the single working period of the heat exchange piece is not more than 30 minutes.

3. A skin care device, comprising:

a care assembly comprising a skin patch;

the power supply is used for supplying power to the heat exchange piece; and

and when the temperature of the thermal management assembly does not exceed a preset temperature threshold, the total heat absorption capacity achieved by the thermal management assembly is larger than the total heat production capacity in a single working period of the heat exchange piece, and the single working period of the heat exchange piece is not larger than 30 minutes.

4. A skin care device as claimed in any one of claims 1 to 3, characterized in that the surface temperature of the housing varies by no more than 5 ℃ over a single working cycle of the heat exchange member.

5. The skin care device of claim 1 or 2, wherein the total heat absorption capacity achievable by the thermal management assembly is greater than the total heat production capacity of the heat exchange member during a single duty cycle when the temperature of the thermal management assembly does not exceed a preset temperature threshold.

6. A skin care device as claimed in claim 1 or 3, wherein the thermal management assembly surface temperature varies by no more than 30 ℃ over a single duty cycle of the heat exchange member; or,

the thermal management assembly surface temperature varies by no more than 18 ℃ in a single duty cycle of the heat exchange member.

7. A skin care device as recited in any one of claims 1-3, wherein said thermal management assembly comprises a phase change heat absorbing member that absorbs a first heat absorbing amount during phase change, said thermal management assembly absorbs a second heat absorbing amount during temperature rise, and said total heat absorbing amount comprises the first heat absorbing amount and the second heat absorbing amount.

8. The skin care device of claim 7, wherein the first heat absorption amount is greater than the second heat absorption amount; or,

the ratio of the first heat absorption amount to the second heat absorption amount is greater than or equal to 2 and less than or equal to 5.

9. The skin care device of claim 7, wherein the phase change heat absorbing member satisfies one of the following conditions:

the phase-change heat absorbing piece keeps the phase state unchanged in the phase-change process, and the phase-change heat absorbing piece meets the following conditions: q1=hxm1, wherein Q1 is the first heat absorption amount, H is the enthalpy value of the phase-change heat absorbing member, M1 is the mass of the phase-change heat absorbing member, and M1 is greater than or equal to 10g and less than or equal to 100g;

The phase change heat absorbing member changes phase state in the phase change process, the phase change heat absorbing member comprises a heat absorbing shell and phase change materials arranged in the heat absorbing shell, and the phase change heat absorbing member meets the following conditions: q1=h×m2, where Q1 is the first heat absorption amount, H is an enthalpy value of the phase-change heat absorbing member, M2 is a mass of the phase-change material, and M2 is greater than or equal to 10g and less than or equal to 100g.

10. A skin care device as claimed in any one of claims 1 to 3, wherein at least a portion of the thermal management assembly is temperature invariant for a portion of the time in a single duty cycle of the heat exchange member.

11. A skin care device as claimed in any one of claims 1 to 3, wherein the thermal management assembly comprises a non-phase change heat absorbing member and a phase change heat absorbing member, the non-phase change heat absorbing member being in contact with the heat exchange member and the phase change heat absorbing member;

the non-phase-change heat absorbing piece and the phase-change heat absorbing piece are in first contact area, the heat exchanging piece and the non-phase-change heat absorbing piece are in second contact area, and the first contact area is larger than the second contact area.

12. The skin care device of claim 11, wherein a ratio of the first contact area to the second contact area is not less than 1.5.

13. A skin care device as claimed in any one of claims 1 to 3, characterized in that the handle further comprises:

and the heat insulation piece is positioned between the surface of the thermal management assembly and the inner surface of the shell and used for blocking the thermal management assembly from exchanging heat with the outer surface of the shell.

14. The skin care device of claim 13, wherein the housing comprises:

an inner shell, the thermal management assembly being disposed within the inner shell;

the outer shell is connected with the nursing component and sleeved on the inner shell;

wherein the heat insulator is provided on at least one of an outer surface of the inner case, an inner surface of the inner case, and an inner surface of the outer case.

15. The skin care device of claim 13, wherein the handle further comprises:

and the heat absorbing member is positioned between the outer surface of the heat insulating member and the inner surface of the shell and is used for absorbing heat transferred from the heat insulating member to the outer surface of the shell.

16. A skin care device as claimed in any one of claims 1 to 3, further comprising:

the temperature detection device is in electrical contact with the controller and is arranged on the thermal management assembly, the temperature detection device is used for detecting the temperature of the thermal management assembly and feeding back to the controller, and the controller controls the working state of the heat exchange piece according to the temperature detected by the temperature detection device.

17. The skin care device of claim 16, wherein the thermal management assembly comprises a phase change heat absorbing member and a non-phase change heat absorbing member, the non-phase change heat absorbing member being in contact with the heat exchange member and the phase change heat absorbing member, the non-phase change heat absorbing member having a thermal conductivity greater than a thermal conductivity of the phase change heat absorbing member;

the temperature detection device is arranged on the non-phase-change heat absorbing piece.